From 34970a7db5c73f4c83b72ce989d297a95efb3a6d Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:04:07 -0500 Subject: mtd: au1550nd.c: use kzalloc() Use kzalloc() instead of kmalloc()/memset(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/au1550nd.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c index 92c334ff4508..de190b8f8a10 100644 --- a/drivers/mtd/nand/au1550nd.c +++ b/drivers/mtd/nand/au1550nd.c @@ -450,7 +450,7 @@ static int __init au1xxx_nand_init(void) u32 nand_phys; /* Allocate memory for MTD device structure and private data */ - au1550_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); + au1550_mtd = kzalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!au1550_mtd) { printk("Unable to allocate NAND MTD dev structure.\n"); return -ENOMEM; @@ -459,10 +459,6 @@ static int __init au1xxx_nand_init(void) /* Get pointer to private data */ this = (struct nand_chip *)(&au1550_mtd[1]); - /* Initialize structures */ - memset(au1550_mtd, 0, sizeof(struct mtd_info)); - memset(this, 0, sizeof(struct nand_chip)); - /* Link the private data with the MTD structure */ au1550_mtd->priv = this; au1550_mtd->owner = THIS_MODULE; -- cgit v1.2.3-58-ga151 From 440d4f9fb62dad0d5ed1635d099cedaa7a25d96d Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:08:37 -0500 Subject: mtd: au1550nd.c: remove unnecessary casts Remove unnecessary casts for p_nand, it is already a void __iomem *. Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/au1550nd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c index de190b8f8a10..58c55db504e2 100644 --- a/drivers/mtd/nand/au1550nd.c +++ b/drivers/mtd/nand/au1550nd.c @@ -538,7 +538,7 @@ static int __init au1xxx_nand_init(void) } nand_phys = (mem_staddr << 4) & 0xFFFC0000; - p_nand = (void __iomem *)ioremap(nand_phys, 0x1000); + p_nand = ioremap(nand_phys, 0x1000); /* make controller and MTD agree */ if (NAND_CS == 0) @@ -583,7 +583,7 @@ static int __init au1xxx_nand_init(void) return 0; outio: - iounmap((void *)p_nand); + iounmap(p_nand); outmem: kfree(au1550_mtd); @@ -604,7 +604,7 @@ static void __exit au1550_cleanup(void) kfree(au1550_mtd); /* Unmap */ - iounmap((void *)p_nand); + iounmap(p_nand); } module_exit(au1550_cleanup); -- cgit v1.2.3-58-ga151 From d8bc55553c416c877267c1efd65b099164acbe3f Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:13:13 -0500 Subject: mtd: davinci_nand.c: use resource_size() The ioremap'ed sizes are off by 1; use resource_size() for correct value. Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/davinci_nand.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index fe3eba87de40..e2eeaf1e51a3 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -566,8 +566,8 @@ static int __init nand_davinci_probe(struct platform_device *pdev) goto err_nomem; } - vaddr = ioremap(res1->start, res1->end - res1->start); - base = ioremap(res2->start, res2->end - res2->start); + vaddr = ioremap(res1->start, resource_size(res1)); + base = ioremap(res2->start, resource_size(res2)); if (!vaddr || !base) { dev_err(&pdev->dev, "ioremap failed\n"); ret = -EINVAL; -- cgit v1.2.3-58-ga151 From 8a19b5581862650ab1735d4699491ac92bd2e212 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:19:44 -0500 Subject: mtd: fsl_elbc_nand.c: user resource_size() Use resource_size(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_elbc_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index ae30fb6eed97..1b8328fbb9dc 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -874,7 +874,7 @@ static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, priv->ctrl = ctrl; priv->dev = ctrl->dev; - priv->vbase = ioremap(res.start, res.end - res.start + 1); + priv->vbase = ioremap(res.start, resource_size(&res)); if (!priv->vbase) { dev_err(ctrl->dev, "failed to map chip region\n"); ret = -ENOMEM; -- cgit v1.2.3-58-ga151 From 58e6a84dfbd6f125b69e8b105c2cdbf22f97d5de Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:22:49 -0500 Subject: mtd: fls_upm.c: use resource_size() Use resource_size(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_upm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index 071a60cb4204..ab06a5b514a9 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -302,7 +302,7 @@ static int __devinit fun_probe(struct of_device *ofdev, FSL_UPM_WAIT_WRITE_BYTE; fun->io_base = devm_ioremap_nocache(&ofdev->dev, io_res.start, - io_res.end - io_res.start + 1); + resource_size(&io_res)); if (!fun->io_base) { ret = -ENOMEM; goto err2; -- cgit v1.2.3-58-ga151 From db5a5ae25aae66354712674b1643759897ff0325 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:30:46 -0500 Subject: mtd: drivers/mtd/nand/gpio.c: use resource_size() Use resource_size(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/gpio.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c index 8f902e75aa85..0cde618bcc1e 100644 --- a/drivers/mtd/nand/gpio.c +++ b/drivers/mtd/nand/gpio.c @@ -181,11 +181,11 @@ static int __devexit gpio_nand_remove(struct platform_device *dev) res = platform_get_resource(dev, IORESOURCE_MEM, 1); iounmap(gpiomtd->io_sync); if (res) - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); res = platform_get_resource(dev, IORESOURCE_MEM, 0); iounmap(gpiomtd->nand_chip.IO_ADDR_R); - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); if (gpio_is_valid(gpiomtd->plat.gpio_nwp)) gpio_set_value(gpiomtd->plat.gpio_nwp, 0); @@ -208,14 +208,14 @@ static void __iomem *request_and_remap(struct resource *res, size_t size, { void __iomem *ptr; - if (!request_mem_region(res->start, res->end - res->start + 1, name)) { + if (!request_mem_region(res->start, resource_size(res), name)) { *err = -EBUSY; return NULL; } ptr = ioremap(res->start, size); if (!ptr) { - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); *err = -ENOMEM; } return ptr; @@ -338,10 +338,10 @@ err_nwp: err_nce: iounmap(gpiomtd->io_sync); if (res1) - release_mem_region(res1->start, res1->end - res1->start + 1); + release_mem_region(res1->start, resource_size(res1)); err_sync: iounmap(gpiomtd->nand_chip.IO_ADDR_R); - release_mem_region(res0->start, res0->end - res0->start + 1); + release_mem_region(res0->start, resource_size(res0)); err_map: kfree(gpiomtd); return ret; -- cgit v1.2.3-58-ga151 From 4442241ef6ed4d53c13d1c4b18fd57918bb4c850 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:36:37 -0500 Subject: mtd: nomadik_nand.c: use resource_size() Use resource_size(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/nomadik_nand.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nomadik_nand.c b/drivers/mtd/nand/nomadik_nand.c index 66123419f65d..59cbf66607c7 100644 --- a/drivers/mtd/nand/nomadik_nand.c +++ b/drivers/mtd/nand/nomadik_nand.c @@ -104,21 +104,21 @@ static int nomadik_nand_probe(struct platform_device *pdev) ret = -EIO; goto err_unmap; } - host->addr_va = ioremap(res->start, res->end - res->start + 1); + host->addr_va = ioremap(res->start, resource_size(res)); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_data"); if (!res) { ret = -EIO; goto err_unmap; } - host->data_va = ioremap(res->start, res->end - res->start + 1); + host->data_va = ioremap(res->start, resource_size(res)); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_cmd"); if (!res) { ret = -EIO; goto err_unmap; } - host->cmd_va = ioremap(res->start, res->end - res->start + 1); + host->cmd_va = ioremap(res->start, resource_size(res)); if (!host->addr_va || !host->data_va || !host->cmd_va) { ret = -ENOMEM; -- cgit v1.2.3-58-ga151 From e99030609e27abff7e1a868cb56384c678b09984 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:48:34 -0500 Subject: mtd: orion_nand.c: add error handling and use resource_size() Use platform_get_resource() to fetch the memory resource and add error handling for when it is missing. Use resource_size() for the ioremap(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/orion_nand.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index f59c07427af3..990346036d37 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -74,6 +74,7 @@ static int __init orion_nand_probe(struct platform_device *pdev) struct mtd_info *mtd; struct nand_chip *nc; struct orion_nand_data *board; + struct resource *res; void __iomem *io_base; int ret = 0; #ifdef CONFIG_MTD_PARTITIONS @@ -89,8 +90,13 @@ static int __init orion_nand_probe(struct platform_device *pdev) } mtd = (struct mtd_info *)(nc + 1); - io_base = ioremap(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + err = -ENODEV; + goto no_res; + } + + io_base = ioremap(res->start, resource_size(res)); if (!io_base) { printk(KERN_ERR "orion_nand: ioremap failed\n"); ret = -EIO; -- cgit v1.2.3-58-ga151 From fc161c4e8ec9b12d42b10d510a9de8562ea3afac Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:56:22 -0500 Subject: mtd: drivers/mtd/nand/s3c2410.c: use resource_size() Use resource_size(). Signed-off-by: H Hartley Sweeten Cc: Ben Dooks Signed-off-by: David Woodhouse --- drivers/mtd/nand/s3c2410.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index fa6e9c7fe511..c41ad2285c63 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -957,7 +957,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) /* currently we assume we have the one resource */ res = pdev->resource; - size = res->end - res->start + 1; + size = resource_size(res); info->area = request_mem_region(res->start, size, pdev->name); -- cgit v1.2.3-58-ga151 From 448791abfb64f097e6d6c5f71df68fd072def5b3 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 17:11:44 -0500 Subject: mtd: tmio_nand.c: use dev_get_platdata() and resource_size() Remove unnecessary casts and use dev_get_platdata() to retrieve the struct mfd_cell data from the platform. Use resource_size() for the ioremap()'s. Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/tmio_nand.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c index 92c73344a669..65fa46957dbb 100644 --- a/drivers/mtd/nand/tmio_nand.c +++ b/drivers/mtd/nand/tmio_nand.c @@ -318,7 +318,7 @@ static int tmio_nand_correct_data(struct mtd_info *mtd, unsigned char *buf, static int tmio_hw_init(struct platform_device *dev, struct tmio_nand *tmio) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + struct mfd_cell *cell = dev_get_platdata(&dev->dev); int ret; if (cell->enable) { @@ -362,7 +362,7 @@ static int tmio_hw_init(struct platform_device *dev, struct tmio_nand *tmio) static void tmio_hw_stop(struct platform_device *dev, struct tmio_nand *tmio) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + struct mfd_cell *cell = dev_get_platdata(&dev->dev); tmio_iowrite8(FCR_MODE_POWER_OFF, tmio->fcr + FCR_MODE); if (cell->disable) @@ -371,7 +371,7 @@ static void tmio_hw_stop(struct platform_device *dev, struct tmio_nand *tmio) static int tmio_probe(struct platform_device *dev) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + struct mfd_cell *cell = dev_get_platdata(&dev->dev); struct tmio_nand_data *data = cell->driver_data; struct resource *fcr = platform_get_resource(dev, IORESOURCE_MEM, 0); @@ -404,14 +404,14 @@ static int tmio_probe(struct platform_device *dev) mtd->priv = nand_chip; mtd->name = "tmio-nand"; - tmio->ccr = ioremap(ccr->start, ccr->end - ccr->start + 1); + tmio->ccr = ioremap(ccr->start, resource_size(ccr)); if (!tmio->ccr) { retval = -EIO; goto err_iomap_ccr; } tmio->fcr_base = fcr->start & 0xfffff; - tmio->fcr = ioremap(fcr->start, fcr->end - fcr->start + 1); + tmio->fcr = ioremap(fcr->start, resource_size(fcr)); if (!tmio->fcr) { retval = -EIO; goto err_iomap_fcr; @@ -515,7 +515,7 @@ static int tmio_remove(struct platform_device *dev) #ifdef CONFIG_PM static int tmio_suspend(struct platform_device *dev, pm_message_t state) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + struct mfd_cell *cell = dev_get_platdata(&dev->dev); if (cell->suspend) cell->suspend(dev); @@ -526,7 +526,7 @@ static int tmio_suspend(struct platform_device *dev, pm_message_t state) static int tmio_resume(struct platform_device *dev) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + struct mfd_cell *cell = dev_get_platdata(&dev->dev); /* FIXME - is this required or merely another attack of the broken * SHARP platform? Looks suspicious. -- cgit v1.2.3-58-ga151 From cbd38a875fd890c3c2f196dd3370d90fd3ecb7f5 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:59:27 -0500 Subject: mtd: drivers/mtd/nand/sh_flctl.c: use resource_size() Use resource_size(). Signed-off-by: H Hartley Sweeten Acked-by: Yoshihiro Shimoda Signed-off-by: David Woodhouse --- drivers/mtd/nand/sh_flctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index 02bef21f2e4b..4260ab78f95c 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -797,7 +797,7 @@ static int __init flctl_probe(struct platform_device *pdev) goto err; } - flctl->reg = ioremap(res->start, res->end - res->start + 1); + flctl->reg = ioremap(res->start, resource_size(res)); if (flctl->reg == NULL) { printk(KERN_ERR "%s: ioremap error.\n", __func__); ret = -ENOMEM; -- cgit v1.2.3-58-ga151 From 49f37b74d077edff355f1c3390fc9fd0c418ef9b Mon Sep 17 00:00:00 2001 From: Wan ZongShun Date: Fri, 1 Jan 2010 18:03:47 +0800 Subject: ARM: NUC900: rename mtd nand driver name Due to I have renamed the platform_device.name,so this patch changes this nand driver platform_driver name. Signed-off-by: Wan ZongShun Signed-off-by: David Woodhouse --- drivers/mtd/nand/w90p910_nand.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/w90p910_nand.c b/drivers/mtd/nand/w90p910_nand.c index 7680e731348a..c2e9b68e4ff7 100644 --- a/drivers/mtd/nand/w90p910_nand.c +++ b/drivers/mtd/nand/w90p910_nand.c @@ -358,7 +358,7 @@ static struct platform_driver w90p910_nand_driver = { .probe = w90p910_nand_probe, .remove = __devexit_p(w90p910_nand_remove), .driver = { - .name = "w90p910-fmi", + .name = "nuc900-fmi", .owner = THIS_MODULE, }, }; @@ -379,4 +379,4 @@ module_exit(w90p910_nand_exit); MODULE_AUTHOR("Wan ZongShun "); MODULE_DESCRIPTION("w90p910 nand driver!"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:w90p910-fmi"); +MODULE_ALIAS("platform:nuc900-fmi"); -- cgit v1.2.3-58-ga151 From bb6a77554935a86686039097cdda2b2a38891c78 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 1 Jan 2010 12:16:47 +0000 Subject: mtd: nand: rename w90p910_nand.c to nuc900_nand.c Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 6 +- drivers/mtd/nand/Makefile | 2 +- drivers/mtd/nand/nuc900_nand.c | 382 ++++++++++++++++++++++++++++++++++++++++ drivers/mtd/nand/w90p910_nand.c | 382 ---------------------------------------- 4 files changed, 386 insertions(+), 386 deletions(-) create mode 100644 drivers/mtd/nand/nuc900_nand.c delete mode 100644 drivers/mtd/nand/w90p910_nand.c (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 7678538344f4..2dcbccb50da7 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -489,11 +489,11 @@ config MTD_NAND_SOCRATES help Enables support for NAND Flash chips wired onto Socrates board. -config MTD_NAND_W90P910 - tristate "Support for NAND on w90p910 evaluation board." +config MTD_NAND_NUC900 + tristate "Support for NAND on Nuvoton NUC9xx/w90p910 evaluation boards." depends on ARCH_W90X900 && MTD_PARTITIONS help This enables the driver for the NAND Flash on evaluation board based - on w90p910. + on w90p910 / NUC9xx. endif # MTD_NAND diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 460a1f39a8d1..bba5addadb95 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -40,7 +40,7 @@ obj-$(CONFIG_MTD_NAND_SH_FLCTL) += sh_flctl.o obj-$(CONFIG_MTD_NAND_MXC) += mxc_nand.o obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o -obj-$(CONFIG_MTD_NAND_W90P910) += w90p910_nand.o +obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o obj-$(CONFIG_MTD_NAND_BCM_UMI) += bcm_umi_nand.o nand_bcm_umi.o diff --git a/drivers/mtd/nand/nuc900_nand.c b/drivers/mtd/nand/nuc900_nand.c new file mode 100644 index 000000000000..6eddf7361ed7 --- /dev/null +++ b/drivers/mtd/nand/nuc900_nand.c @@ -0,0 +1,382 @@ +/* + * Copyright © 2009 Nuvoton technology corporation. + * + * Wan ZongShun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation;version 2 of the License. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define REG_FMICSR 0x00 +#define REG_SMCSR 0xa0 +#define REG_SMISR 0xac +#define REG_SMCMD 0xb0 +#define REG_SMADDR 0xb4 +#define REG_SMDATA 0xb8 + +#define RESET_FMI 0x01 +#define NAND_EN 0x08 +#define READYBUSY (0x01 << 18) + +#define SWRST 0x01 +#define PSIZE (0x01 << 3) +#define DMARWEN (0x03 << 1) +#define BUSWID (0x01 << 4) +#define ECC4EN (0x01 << 5) +#define WP (0x01 << 24) +#define NANDCS (0x01 << 25) +#define ENDADDR (0x01 << 31) + +#define read_data_reg(dev) \ + __raw_readl((dev)->reg + REG_SMDATA) + +#define write_data_reg(dev, val) \ + __raw_writel((val), (dev)->reg + REG_SMDATA) + +#define write_cmd_reg(dev, val) \ + __raw_writel((val), (dev)->reg + REG_SMCMD) + +#define write_addr_reg(dev, val) \ + __raw_writel((val), (dev)->reg + REG_SMADDR) + +struct nuc900_nand { + struct mtd_info mtd; + struct nand_chip chip; + void __iomem *reg; + struct clk *clk; + spinlock_t lock; +}; + +static const struct mtd_partition partitions[] = { + { + .name = "NAND FS 0", + .offset = 0, + .size = 8 * 1024 * 1024 + }, + { + .name = "NAND FS 1", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL + } +}; + +static unsigned char nuc900_nand_read_byte(struct mtd_info *mtd) +{ + unsigned char ret; + struct nuc900_nand *nand; + + nand = container_of(mtd, struct nuc900_nand, mtd); + + ret = (unsigned char)read_data_reg(nand); + + return ret; +} + +static void nuc900_nand_read_buf(struct mtd_info *mtd, + unsigned char *buf, int len) +{ + int i; + struct nuc900_nand *nand; + + nand = container_of(mtd, struct nuc900_nand, mtd); + + for (i = 0; i < len; i++) + buf[i] = (unsigned char)read_data_reg(nand); +} + +static void nuc900_nand_write_buf(struct mtd_info *mtd, + const unsigned char *buf, int len) +{ + int i; + struct nuc900_nand *nand; + + nand = container_of(mtd, struct nuc900_nand, mtd); + + for (i = 0; i < len; i++) + write_data_reg(nand, buf[i]); +} + +static int nuc900_verify_buf(struct mtd_info *mtd, + const unsigned char *buf, int len) +{ + int i; + struct nuc900_nand *nand; + + nand = container_of(mtd, struct nuc900_nand, mtd); + + for (i = 0; i < len; i++) { + if (buf[i] != (unsigned char)read_data_reg(nand)) + return -EFAULT; + } + + return 0; +} + +static int nuc900_check_rb(struct nuc900_nand *nand) +{ + unsigned int val; + spin_lock(&nand->lock); + val = __raw_readl(REG_SMISR); + val &= READYBUSY; + spin_unlock(&nand->lock); + + return val; +} + +static int nuc900_nand_devready(struct mtd_info *mtd) +{ + struct nuc900_nand *nand; + int ready; + + nand = container_of(mtd, struct nuc900_nand, mtd); + + ready = (nuc900_check_rb(nand)) ? 1 : 0; + return ready; +} + +static void nuc900_nand_command_lp(struct mtd_info *mtd, unsigned int command, + int column, int page_addr) +{ + register struct nand_chip *chip = mtd->priv; + struct nuc900_nand *nand; + + nand = container_of(mtd, struct nuc900_nand, mtd); + + if (command == NAND_CMD_READOOB) { + column += mtd->writesize; + command = NAND_CMD_READ0; + } + + write_cmd_reg(nand, command & 0xff); + + if (column != -1 || page_addr != -1) { + + if (column != -1) { + if (chip->options & NAND_BUSWIDTH_16) + column >>= 1; + write_addr_reg(nand, column); + write_addr_reg(nand, column >> 8 | ENDADDR); + } + if (page_addr != -1) { + write_addr_reg(nand, page_addr); + + if (chip->chipsize > (128 << 20)) { + write_addr_reg(nand, page_addr >> 8); + write_addr_reg(nand, page_addr >> 16 | ENDADDR); + } else { + write_addr_reg(nand, page_addr >> 8 | ENDADDR); + } + } + } + + switch (command) { + case NAND_CMD_CACHEDPROG: + case NAND_CMD_PAGEPROG: + case NAND_CMD_ERASE1: + case NAND_CMD_ERASE2: + case NAND_CMD_SEQIN: + case NAND_CMD_RNDIN: + case NAND_CMD_STATUS: + case NAND_CMD_DEPLETE1: + return; + + case NAND_CMD_STATUS_ERROR: + case NAND_CMD_STATUS_ERROR0: + case NAND_CMD_STATUS_ERROR1: + case NAND_CMD_STATUS_ERROR2: + case NAND_CMD_STATUS_ERROR3: + udelay(chip->chip_delay); + return; + + case NAND_CMD_RESET: + if (chip->dev_ready) + break; + udelay(chip->chip_delay); + + write_cmd_reg(nand, NAND_CMD_STATUS); + write_cmd_reg(nand, command); + + while (!nuc900_check_rb(nand)) + ; + + return; + + case NAND_CMD_RNDOUT: + write_cmd_reg(nand, NAND_CMD_RNDOUTSTART); + return; + + case NAND_CMD_READ0: + + write_cmd_reg(nand, NAND_CMD_READSTART); + default: + + if (!chip->dev_ready) { + udelay(chip->chip_delay); + return; + } + } + + /* Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. */ + ndelay(100); + + while (!chip->dev_ready(mtd)) + ; +} + + +static void nuc900_nand_enable(struct nuc900_nand *nand) +{ + unsigned int val; + spin_lock(&nand->lock); + __raw_writel(RESET_FMI, (nand->reg + REG_FMICSR)); + + val = __raw_readl(nand->reg + REG_FMICSR); + + if (!(val & NAND_EN)) + __raw_writel(val | NAND_EN, REG_FMICSR); + + val = __raw_readl(nand->reg + REG_SMCSR); + + val &= ~(SWRST|PSIZE|DMARWEN|BUSWID|ECC4EN|NANDCS); + val |= WP; + + __raw_writel(val, nand->reg + REG_SMCSR); + + spin_unlock(&nand->lock); +} + +static int __devinit nuc900_nand_probe(struct platform_device *pdev) +{ + struct nuc900_nand *nuc900_nand; + struct nand_chip *chip; + int retval; + struct resource *res; + + retval = 0; + + nuc900_nand = kzalloc(sizeof(struct nuc900_nand), GFP_KERNEL); + if (!nuc900_nand) + return -ENOMEM; + chip = &(nuc900_nand->chip); + + nuc900_nand->mtd.priv = chip; + nuc900_nand->mtd.owner = THIS_MODULE; + spin_lock_init(&nuc900_nand->lock); + + nuc900_nand->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(nuc900_nand->clk)) { + retval = -ENOENT; + goto fail1; + } + clk_enable(nuc900_nand->clk); + + chip->cmdfunc = nuc900_nand_command_lp; + chip->dev_ready = nuc900_nand_devready; + chip->read_byte = nuc900_nand_read_byte; + chip->write_buf = nuc900_nand_write_buf; + chip->read_buf = nuc900_nand_read_buf; + chip->verify_buf = nuc900_verify_buf; + chip->chip_delay = 50; + chip->options = 0; + chip->ecc.mode = NAND_ECC_SOFT; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + retval = -ENXIO; + goto fail1; + } + + if (!request_mem_region(res->start, resource_size(res), pdev->name)) { + retval = -EBUSY; + goto fail1; + } + + nuc900_nand->reg = ioremap(res->start, resource_size(res)); + if (!nuc900_nand->reg) { + retval = -ENOMEM; + goto fail2; + } + + nuc900_nand_enable(nuc900_nand); + + if (nand_scan(&(nuc900_nand->mtd), 1)) { + retval = -ENXIO; + goto fail3; + } + + add_mtd_partitions(&(nuc900_nand->mtd), partitions, + ARRAY_SIZE(partitions)); + + platform_set_drvdata(pdev, nuc900_nand); + + return retval; + +fail3: iounmap(nuc900_nand->reg); +fail2: release_mem_region(res->start, resource_size(res)); +fail1: kfree(nuc900_nand); + return retval; +} + +static int __devexit nuc900_nand_remove(struct platform_device *pdev) +{ + struct nuc900_nand *nuc900_nand = platform_get_drvdata(pdev); + struct resource *res; + + iounmap(nuc900_nand->reg); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(res->start, resource_size(res)); + + clk_disable(nuc900_nand->clk); + clk_put(nuc900_nand->clk); + + kfree(nuc900_nand); + + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static struct platform_driver nuc900_nand_driver = { + .probe = nuc900_nand_probe, + .remove = __devexit_p(nuc900_nand_remove), + .driver = { + .name = "nuc900-fmi", + .owner = THIS_MODULE, + }, +}; + +static int __init nuc900_nand_init(void) +{ + return platform_driver_register(&nuc900_nand_driver); +} + +static void __exit nuc900_nand_exit(void) +{ + platform_driver_unregister(&nuc900_nand_driver); +} + +module_init(nuc900_nand_init); +module_exit(nuc900_nand_exit); + +MODULE_AUTHOR("Wan ZongShun "); +MODULE_DESCRIPTION("w90p910/NUC9xx nand driver!"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:nuc900-fmi"); diff --git a/drivers/mtd/nand/w90p910_nand.c b/drivers/mtd/nand/w90p910_nand.c deleted file mode 100644 index c2e9b68e4ff7..000000000000 --- a/drivers/mtd/nand/w90p910_nand.c +++ /dev/null @@ -1,382 +0,0 @@ -/* - * Copyright (c) 2009 Nuvoton technology corporation. - * - * Wan ZongShun - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation;version 2 of the License. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#define REG_FMICSR 0x00 -#define REG_SMCSR 0xa0 -#define REG_SMISR 0xac -#define REG_SMCMD 0xb0 -#define REG_SMADDR 0xb4 -#define REG_SMDATA 0xb8 - -#define RESET_FMI 0x01 -#define NAND_EN 0x08 -#define READYBUSY (0x01 << 18) - -#define SWRST 0x01 -#define PSIZE (0x01 << 3) -#define DMARWEN (0x03 << 1) -#define BUSWID (0x01 << 4) -#define ECC4EN (0x01 << 5) -#define WP (0x01 << 24) -#define NANDCS (0x01 << 25) -#define ENDADDR (0x01 << 31) - -#define read_data_reg(dev) \ - __raw_readl((dev)->reg + REG_SMDATA) - -#define write_data_reg(dev, val) \ - __raw_writel((val), (dev)->reg + REG_SMDATA) - -#define write_cmd_reg(dev, val) \ - __raw_writel((val), (dev)->reg + REG_SMCMD) - -#define write_addr_reg(dev, val) \ - __raw_writel((val), (dev)->reg + REG_SMADDR) - -struct w90p910_nand { - struct mtd_info mtd; - struct nand_chip chip; - void __iomem *reg; - struct clk *clk; - spinlock_t lock; -}; - -static const struct mtd_partition partitions[] = { - { - .name = "NAND FS 0", - .offset = 0, - .size = 8 * 1024 * 1024 - }, - { - .name = "NAND FS 1", - .offset = MTDPART_OFS_APPEND, - .size = MTDPART_SIZ_FULL - } -}; - -static unsigned char w90p910_nand_read_byte(struct mtd_info *mtd) -{ - unsigned char ret; - struct w90p910_nand *nand; - - nand = container_of(mtd, struct w90p910_nand, mtd); - - ret = (unsigned char)read_data_reg(nand); - - return ret; -} - -static void w90p910_nand_read_buf(struct mtd_info *mtd, - unsigned char *buf, int len) -{ - int i; - struct w90p910_nand *nand; - - nand = container_of(mtd, struct w90p910_nand, mtd); - - for (i = 0; i < len; i++) - buf[i] = (unsigned char)read_data_reg(nand); -} - -static void w90p910_nand_write_buf(struct mtd_info *mtd, - const unsigned char *buf, int len) -{ - int i; - struct w90p910_nand *nand; - - nand = container_of(mtd, struct w90p910_nand, mtd); - - for (i = 0; i < len; i++) - write_data_reg(nand, buf[i]); -} - -static int w90p910_verify_buf(struct mtd_info *mtd, - const unsigned char *buf, int len) -{ - int i; - struct w90p910_nand *nand; - - nand = container_of(mtd, struct w90p910_nand, mtd); - - for (i = 0; i < len; i++) { - if (buf[i] != (unsigned char)read_data_reg(nand)) - return -EFAULT; - } - - return 0; -} - -static int w90p910_check_rb(struct w90p910_nand *nand) -{ - unsigned int val; - spin_lock(&nand->lock); - val = __raw_readl(REG_SMISR); - val &= READYBUSY; - spin_unlock(&nand->lock); - - return val; -} - -static int w90p910_nand_devready(struct mtd_info *mtd) -{ - struct w90p910_nand *nand; - int ready; - - nand = container_of(mtd, struct w90p910_nand, mtd); - - ready = (w90p910_check_rb(nand)) ? 1 : 0; - return ready; -} - -static void w90p910_nand_command_lp(struct mtd_info *mtd, - unsigned int command, int column, int page_addr) -{ - register struct nand_chip *chip = mtd->priv; - struct w90p910_nand *nand; - - nand = container_of(mtd, struct w90p910_nand, mtd); - - if (command == NAND_CMD_READOOB) { - column += mtd->writesize; - command = NAND_CMD_READ0; - } - - write_cmd_reg(nand, command & 0xff); - - if (column != -1 || page_addr != -1) { - - if (column != -1) { - if (chip->options & NAND_BUSWIDTH_16) - column >>= 1; - write_addr_reg(nand, column); - write_addr_reg(nand, column >> 8 | ENDADDR); - } - if (page_addr != -1) { - write_addr_reg(nand, page_addr); - - if (chip->chipsize > (128 << 20)) { - write_addr_reg(nand, page_addr >> 8); - write_addr_reg(nand, page_addr >> 16 | ENDADDR); - } else { - write_addr_reg(nand, page_addr >> 8 | ENDADDR); - } - } - } - - switch (command) { - case NAND_CMD_CACHEDPROG: - case NAND_CMD_PAGEPROG: - case NAND_CMD_ERASE1: - case NAND_CMD_ERASE2: - case NAND_CMD_SEQIN: - case NAND_CMD_RNDIN: - case NAND_CMD_STATUS: - case NAND_CMD_DEPLETE1: - return; - - case NAND_CMD_STATUS_ERROR: - case NAND_CMD_STATUS_ERROR0: - case NAND_CMD_STATUS_ERROR1: - case NAND_CMD_STATUS_ERROR2: - case NAND_CMD_STATUS_ERROR3: - udelay(chip->chip_delay); - return; - - case NAND_CMD_RESET: - if (chip->dev_ready) - break; - udelay(chip->chip_delay); - - write_cmd_reg(nand, NAND_CMD_STATUS); - write_cmd_reg(nand, command); - - while (!w90p910_check_rb(nand)) - ; - - return; - - case NAND_CMD_RNDOUT: - write_cmd_reg(nand, NAND_CMD_RNDOUTSTART); - return; - - case NAND_CMD_READ0: - - write_cmd_reg(nand, NAND_CMD_READSTART); - default: - - if (!chip->dev_ready) { - udelay(chip->chip_delay); - return; - } - } - - /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ - ndelay(100); - - while (!chip->dev_ready(mtd)) - ; -} - - -static void w90p910_nand_enable(struct w90p910_nand *nand) -{ - unsigned int val; - spin_lock(&nand->lock); - __raw_writel(RESET_FMI, (nand->reg + REG_FMICSR)); - - val = __raw_readl(nand->reg + REG_FMICSR); - - if (!(val & NAND_EN)) - __raw_writel(val | NAND_EN, REG_FMICSR); - - val = __raw_readl(nand->reg + REG_SMCSR); - - val &= ~(SWRST|PSIZE|DMARWEN|BUSWID|ECC4EN|NANDCS); - val |= WP; - - __raw_writel(val, nand->reg + REG_SMCSR); - - spin_unlock(&nand->lock); -} - -static int __devinit w90p910_nand_probe(struct platform_device *pdev) -{ - struct w90p910_nand *w90p910_nand; - struct nand_chip *chip; - int retval; - struct resource *res; - - retval = 0; - - w90p910_nand = kzalloc(sizeof(struct w90p910_nand), GFP_KERNEL); - if (!w90p910_nand) - return -ENOMEM; - chip = &(w90p910_nand->chip); - - w90p910_nand->mtd.priv = chip; - w90p910_nand->mtd.owner = THIS_MODULE; - spin_lock_init(&w90p910_nand->lock); - - w90p910_nand->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(w90p910_nand->clk)) { - retval = -ENOENT; - goto fail1; - } - clk_enable(w90p910_nand->clk); - - chip->cmdfunc = w90p910_nand_command_lp; - chip->dev_ready = w90p910_nand_devready; - chip->read_byte = w90p910_nand_read_byte; - chip->write_buf = w90p910_nand_write_buf; - chip->read_buf = w90p910_nand_read_buf; - chip->verify_buf = w90p910_verify_buf; - chip->chip_delay = 50; - chip->options = 0; - chip->ecc.mode = NAND_ECC_SOFT; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - retval = -ENXIO; - goto fail1; - } - - if (!request_mem_region(res->start, resource_size(res), pdev->name)) { - retval = -EBUSY; - goto fail1; - } - - w90p910_nand->reg = ioremap(res->start, resource_size(res)); - if (!w90p910_nand->reg) { - retval = -ENOMEM; - goto fail2; - } - - w90p910_nand_enable(w90p910_nand); - - if (nand_scan(&(w90p910_nand->mtd), 1)) { - retval = -ENXIO; - goto fail3; - } - - add_mtd_partitions(&(w90p910_nand->mtd), partitions, - ARRAY_SIZE(partitions)); - - platform_set_drvdata(pdev, w90p910_nand); - - return retval; - -fail3: iounmap(w90p910_nand->reg); -fail2: release_mem_region(res->start, resource_size(res)); -fail1: kfree(w90p910_nand); - return retval; -} - -static int __devexit w90p910_nand_remove(struct platform_device *pdev) -{ - struct w90p910_nand *w90p910_nand = platform_get_drvdata(pdev); - struct resource *res; - - iounmap(w90p910_nand->reg); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - clk_disable(w90p910_nand->clk); - clk_put(w90p910_nand->clk); - - kfree(w90p910_nand); - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static struct platform_driver w90p910_nand_driver = { - .probe = w90p910_nand_probe, - .remove = __devexit_p(w90p910_nand_remove), - .driver = { - .name = "nuc900-fmi", - .owner = THIS_MODULE, - }, -}; - -static int __init w90p910_nand_init(void) -{ - return platform_driver_register(&w90p910_nand_driver); -} - -static void __exit w90p910_nand_exit(void) -{ - platform_driver_unregister(&w90p910_nand_driver); -} - -module_init(w90p910_nand_init); -module_exit(w90p910_nand_exit); - -MODULE_AUTHOR("Wan ZongShun "); -MODULE_DESCRIPTION("w90p910 nand driver!"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:nuc900-fmi"); -- cgit v1.2.3-58-ga151 From 7603757993e7ce3e63b2280ccf61d8058b7b2414 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 5 Jan 2010 14:59:58 -0700 Subject: mtd: Remove now-defunct ts7250 nand driver The ts72xx platform has been updated to use the generic platform nand driver (plat_nand.c). This removes the now-defunct ts7250.c nand driver. Signed-off-by: H Hartley Sweeten Cc: Matthieu Crapet Cc: Jesse Off Signed-off-by: David Woodhouse --- arch/arm/mach-ep93xx/include/mach/ts72xx.h | 19 --- drivers/mtd/nand/Kconfig | 6 - drivers/mtd/nand/Makefile | 1 - drivers/mtd/nand/ts7250.c | 207 ----------------------------- 4 files changed, 233 deletions(-) delete mode 100644 drivers/mtd/nand/ts7250.c (limited to 'drivers/mtd/nand') diff --git a/arch/arm/mach-ep93xx/include/mach/ts72xx.h b/arch/arm/mach-ep93xx/include/mach/ts72xx.h index 3bd934e9a7f1..61c0e132c63e 100644 --- a/arch/arm/mach-ep93xx/include/mach/ts72xx.h +++ b/arch/arm/mach-ep93xx/include/mach/ts72xx.h @@ -9,9 +9,6 @@ * febff000 22000000 4K model number register * febfe000 22400000 4K options register * febfd000 22800000 4K options register #2 - * febfc000 [67]0000000 4K NAND data register - * febfb000 [67]0400000 4K NAND control register - * febfa000 [67]0800000 4K NAND busy register * febf9000 10800000 4K TS-5620 RTC index register * febf8000 11700000 4K TS-5620 RTC data register */ @@ -41,22 +38,6 @@ #define TS72XX_OPTIONS2_TS9420_BOOT 0x02 -#define TS72XX_NAND1_DATA_PHYS_BASE 0x60000000 -#define TS72XX_NAND2_DATA_PHYS_BASE 0x70000000 -#define TS72XX_NAND_DATA_VIRT_BASE 0xfebfc000 -#define TS72XX_NAND_DATA_SIZE 0x00001000 - -#define TS72XX_NAND1_CONTROL_PHYS_BASE 0x60400000 -#define TS72XX_NAND2_CONTROL_PHYS_BASE 0x70400000 -#define TS72XX_NAND_CONTROL_VIRT_BASE 0xfebfb000 -#define TS72XX_NAND_CONTROL_SIZE 0x00001000 - -#define TS72XX_NAND1_BUSY_PHYS_BASE 0x60800000 -#define TS72XX_NAND2_BUSY_PHYS_BASE 0x70800000 -#define TS72XX_NAND_BUSY_VIRT_BASE 0xfebfa000 -#define TS72XX_NAND_BUSY_SIZE 0x00001000 - - #define TS72XX_RTC_INDEX_VIRT_BASE 0xfebf9000 #define TS72XX_RTC_INDEX_PHYS_BASE 0x10800000 #define TS72XX_RTC_INDEX_SIZE 0x00001000 diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 2dcbccb50da7..318ef2f2194f 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -95,12 +95,6 @@ config MTD_NAND_OMAP_PREFETCH_DMA or in DMA interrupt mode. Say y for DMA mode or MPU mode will be used -config MTD_NAND_TS7250 - tristate "NAND Flash device on TS-7250 board" - depends on MACH_TS72XX - help - Support for NAND flash on Technologic Systems TS-7250 platform. - config MTD_NAND_IDS tristate diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index bba5addadb95..355786846bc9 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o obj-$(CONFIG_MTD_NAND_H1900) += h1910.o obj-$(CONFIG_MTD_NAND_RTC_FROM4) += rtc_from4.o obj-$(CONFIG_MTD_NAND_SHARPSL) += sharpsl.o -obj-$(CONFIG_MTD_NAND_TS7250) += ts7250.o obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o obj-$(CONFIG_MTD_NAND_CS553X) += cs553x_nand.o obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o diff --git a/drivers/mtd/nand/ts7250.c b/drivers/mtd/nand/ts7250.c deleted file mode 100644 index 0f5562aeedc1..000000000000 --- a/drivers/mtd/nand/ts7250.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * drivers/mtd/nand/ts7250.c - * - * Copyright (C) 2004 Technologic Systems (support@embeddedARM.com) - * - * Derived from drivers/mtd/nand/edb7312.c - * Copyright (C) 2004 Marius Gröger (mag@sysgo.de) - * - * Derived from drivers/mtd/nand/autcpu12.c - * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Overview: - * This is a device driver for the NAND flash device found on the - * TS-7250 board which utilizes a Samsung 32 Mbyte part. - */ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include - -/* - * MTD structure for TS7250 board - */ -static struct mtd_info *ts7250_mtd = NULL; - -#ifdef CONFIG_MTD_PARTITIONS -static const char *part_probes[] = { "cmdlinepart", NULL }; - -#define NUM_PARTITIONS 3 - -/* - * Define static partitions for flash device - */ -static struct mtd_partition partition_info32[] = { - { - .name = "TS-BOOTROM", - .offset = 0x00000000, - .size = 0x00004000, - }, { - .name = "Linux", - .offset = 0x00004000, - .size = 0x01d00000, - }, { - .name = "RedBoot", - .offset = 0x01d04000, - .size = 0x002fc000, - }, -}; - -/* - * Define static partitions for flash device - */ -static struct mtd_partition partition_info128[] = { - { - .name = "TS-BOOTROM", - .offset = 0x00000000, - .size = 0x00004000, - }, { - .name = "Linux", - .offset = 0x00004000, - .size = 0x07d00000, - }, { - .name = "RedBoot", - .offset = 0x07d04000, - .size = 0x002fc000, - }, -}; -#endif - - -/* - * hardware specific access to control-lines - * - * ctrl: - * NAND_NCE: bit 0 -> bit 2 - * NAND_CLE: bit 1 -> bit 1 - * NAND_ALE: bit 2 -> bit 0 - */ -static void ts7250_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) -{ - struct nand_chip *chip = mtd->priv; - - if (ctrl & NAND_CTRL_CHANGE) { - unsigned long addr = TS72XX_NAND_CONTROL_VIRT_BASE; - unsigned char bits; - - bits = (ctrl & NAND_NCE) << 2; - bits |= ctrl & NAND_CLE; - bits |= (ctrl & NAND_ALE) >> 2; - - __raw_writeb((__raw_readb(addr) & ~0x7) | bits, addr); - } - - if (cmd != NAND_CMD_NONE) - writeb(cmd, chip->IO_ADDR_W); -} - -/* - * read device ready pin - */ -static int ts7250_device_ready(struct mtd_info *mtd) -{ - return __raw_readb(TS72XX_NAND_BUSY_VIRT_BASE) & 0x20; -} - -/* - * Main initialization routine - */ -static int __init ts7250_init(void) -{ - struct nand_chip *this; - const char *part_type = 0; - int mtd_parts_nb = 0; - struct mtd_partition *mtd_parts = 0; - - if (!machine_is_ts72xx() || board_is_ts7200()) - return -ENXIO; - - /* Allocate memory for MTD device structure and private data */ - ts7250_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); - if (!ts7250_mtd) { - printk("Unable to allocate TS7250 NAND MTD device structure.\n"); - return -ENOMEM; - } - - /* Get pointer to private data */ - this = (struct nand_chip *)(&ts7250_mtd[1]); - - /* Initialize structures */ - memset(ts7250_mtd, 0, sizeof(struct mtd_info)); - memset(this, 0, sizeof(struct nand_chip)); - - /* Link the private data with the MTD structure */ - ts7250_mtd->priv = this; - ts7250_mtd->owner = THIS_MODULE; - - /* insert callbacks */ - this->IO_ADDR_R = (void *)TS72XX_NAND_DATA_VIRT_BASE; - this->IO_ADDR_W = (void *)TS72XX_NAND_DATA_VIRT_BASE; - this->cmd_ctrl = ts7250_hwcontrol; - this->dev_ready = ts7250_device_ready; - this->chip_delay = 15; - this->ecc.mode = NAND_ECC_SOFT; - - printk("Searching for NAND flash...\n"); - /* Scan to find existence of the device */ - if (nand_scan(ts7250_mtd, 1)) { - kfree(ts7250_mtd); - return -ENXIO; - } -#ifdef CONFIG_MTD_PARTITIONS - ts7250_mtd->name = "ts7250-nand"; - mtd_parts_nb = parse_mtd_partitions(ts7250_mtd, part_probes, &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else - mtd_parts_nb = 0; -#endif - if (mtd_parts_nb == 0) { - mtd_parts = partition_info32; - if (ts7250_mtd->size >= (128 * 0x100000)) - mtd_parts = partition_info128; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } - - /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - add_mtd_partitions(ts7250_mtd, mtd_parts, mtd_parts_nb); - - /* Return happy */ - return 0; -} - -module_init(ts7250_init); - -/* - * Clean up routine - */ -static void __exit ts7250_cleanup(void) -{ - /* Unregister the device */ - del_mtd_device(ts7250_mtd); - - /* Free the MTD device structure */ - kfree(ts7250_mtd); -} - -module_exit(ts7250_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Jesse Off "); -MODULE_DESCRIPTION("MTD map driver for Technologic Systems TS-7250 board"); -- cgit v1.2.3-58-ga151 From 2d6bfc261a02662ec7a3a78df3e05e453e8b168d Mon Sep 17 00:00:00 2001 From: Peter Huewe Date: Thu, 7 Jan 2010 02:51:13 +0100 Subject: mtd: orion_nand: Fix build failure caused by typo MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit e99030609e27abff7e1a868cb56384c678b09984 ("mtd: orion_nand.c: add error handling and use resource_size()") introduced a build error -- it assigns something to a undeclared variable 'err', whereas the rest of the code uses 'ret' for this task. This patch fixes this typo and thus removes the build failure. Signed-off-by: Peter Huewe Reviewed-by: H Hartley Sweeten Acked-by: Uwe Kleine-König Signed-off-by: David Woodhouse Signed-off-by: Andrew Morton --- drivers/mtd/nand/orion_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index 990346036d37..f16050c61c5c 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -92,7 +92,7 @@ static int __init orion_nand_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { - err = -ENODEV; + ret = -ENODEV; goto no_res; } -- cgit v1.2.3-58-ga151 From 6029a3a4625e485e01cf9a024d190c9d4e6b6681 Mon Sep 17 00:00:00 2001 From: Andrey Yurovsky Date: Thu, 17 Dec 2009 12:31:20 -0800 Subject: mtd: nandsim: fix spelling s/nanodeconds/nanoseconds Signed-off-by: Andrey Yurovsky Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nandsim.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 7281000fef2d..3cf918048673 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -135,8 +135,8 @@ MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read I MODULE_PARM_DESC(access_delay, "Initial page access delay (microseconds)"); MODULE_PARM_DESC(programm_delay, "Page programm delay (microseconds"); MODULE_PARM_DESC(erase_delay, "Sector erase delay (milliseconds)"); -MODULE_PARM_DESC(output_cycle, "Word output (from flash) time (nanodeconds)"); -MODULE_PARM_DESC(input_cycle, "Word input (to flash) time (nanodeconds)"); +MODULE_PARM_DESC(output_cycle, "Word output (from flash) time (nanoseconds)"); +MODULE_PARM_DESC(input_cycle, "Word input (to flash) time (nanoseconds)"); MODULE_PARM_DESC(bus_width, "Chip's bus width (8- or 16-bit)"); MODULE_PARM_DESC(do_delays, "Simulate NAND delays using busy-waits if not zero"); MODULE_PARM_DESC(log, "Perform logging if not zero"); -- cgit v1.2.3-58-ga151 From 377ace08eaaa3fb0c05b3fb7a86a5a1e9eb04673 Mon Sep 17 00:00:00 2001 From: Márton Németh Date: Sat, 9 Jan 2010 15:10:34 +0100 Subject: mtd: nand: make PCI device id constant MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The id_table field of the struct pci_driver is constant in so it is worth to make cafe_nand_tbl also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // Signed-off-by: Márton Németh Cc: Julia Lawall Cc: cocci@diku.dk Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/cafe_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index c828d9ac7bd7..67e2b33f7eff 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -848,7 +848,7 @@ static void __devexit cafe_nand_remove(struct pci_dev *pdev) kfree(mtd); } -static struct pci_device_id cafe_nand_tbl[] = { +static const struct pci_device_id cafe_nand_tbl[] = { { PCI_VENDOR_ID_MARVELL, PCI_DEVICE_ID_MARVELL_88ALP01_NAND, PCI_ANY_ID, PCI_ANY_ID }, { } -- cgit v1.2.3-58-ga151 From b3acd638a2b8b9c3cd1b52b83e285c88d34ef7f3 Mon Sep 17 00:00:00 2001 From: Márton Németh Date: Sat, 9 Jan 2010 15:10:40 +0100 Subject: mtd: nand: make USB device id constant MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The id_table field of the struct usb_device_id is constant in so it is worth to make alauda_table also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // Signed-off-by: Márton Németh Cc: Julia Lawall Cc: cocci@diku.dk Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/alauda.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c index 2d6773281fd9..8691e0482ed2 100644 --- a/drivers/mtd/nand/alauda.c +++ b/drivers/mtd/nand/alauda.c @@ -49,7 +49,7 @@ #define TIMEOUT HZ -static struct usb_device_id alauda_table [] = { +static const struct usb_device_id alauda_table[] = { { USB_DEVICE(0x0584, 0x0008) }, /* Fujifilm DPC-R1 */ { USB_DEVICE(0x07b4, 0x010a) }, /* Olympus MAUSB-10 */ { } -- cgit v1.2.3-58-ga151 From b2d4fbab79bd2b121c56db757c3a0f06ec7e0868 Mon Sep 17 00:00:00 2001 From: Márton Németh Date: Sat, 9 Jan 2010 15:10:46 +0100 Subject: mtd: nand: make Open Firmware device id constant MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The match_table field of the struct of_device_id is constant in so it is worth to make xps2_of_match also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // Signed-off-by: Márton Németh Cc: Julia Lawall Cc: cocci@diku.dk Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_upm.c | 2 +- drivers/mtd/nand/pasemi_nand.c | 2 +- drivers/mtd/nand/socrates_nand.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index ab06a5b514a9..d721ec055cbf 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -349,7 +349,7 @@ static int __devexit fun_remove(struct of_device *ofdev) return 0; } -static struct of_device_id of_fun_match[] = { +static const struct of_device_id of_fun_match[] = { { .compatible = "fsl,upm-nand" }, {}, }; diff --git a/drivers/mtd/nand/pasemi_nand.c b/drivers/mtd/nand/pasemi_nand.c index a8b9376cf324..090a05c12cbe 100644 --- a/drivers/mtd/nand/pasemi_nand.c +++ b/drivers/mtd/nand/pasemi_nand.c @@ -209,7 +209,7 @@ static int __devexit pasemi_nand_remove(struct of_device *ofdev) return 0; } -static struct of_device_id pasemi_nand_match[] = +static const struct of_device_id pasemi_nand_match[] = { { .compatible = "pasemi,localbus-nand", diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c index a4519a7bd683..65748ea2b348 100644 --- a/drivers/mtd/nand/socrates_nand.c +++ b/drivers/mtd/nand/socrates_nand.c @@ -290,7 +290,7 @@ static int __devexit socrates_nand_remove(struct of_device *ofdev) return 0; } -static struct of_device_id socrates_nand_match[] = +static const struct of_device_id socrates_nand_match[] = { { .compatible = "abb,socrates-nand", -- cgit v1.2.3-58-ga151 From b840bc11b5062803c204d8a9625a1a1c5812d6d6 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 11 Jan 2010 15:05:35 +0100 Subject: mtd: mxc-nand: no need to check for validity of platform driver data MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The probe function calls platform_set_drvdata with a valid pointer when the probe is successful. As mxcnd_suspend and mxcnd_resume are only called on bound devices, platform_get_drvdata always returns non-NULL. This fix isn't critical as the pointer is always valid so it doesn't matter if the compiler generated code for it or not. Signed-off-by: Uwe Kleine-König Reported-by: David Binderman Signed-off-by: Artem Bityutskiy Acked-by: Sascha Hauer Signed-off-by: David Woodhouse --- drivers/mtd/nand/mxc_nand.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 45dec5770da0..84f363571c24 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -886,11 +886,10 @@ static int mxcnd_suspend(struct platform_device *pdev, pm_message_t state) int ret = 0; DEBUG(MTD_DEBUG_LEVEL0, "MXC_ND : NAND suspend\n"); - if (mtd) { - ret = mtd->suspend(mtd); - /* Disable the NFC clock */ - clk_disable(host->clk); - } + + ret = mtd->suspend(mtd); + /* Disable the NFC clock */ + clk_disable(host->clk); return ret; } @@ -904,11 +903,9 @@ static int mxcnd_resume(struct platform_device *pdev) DEBUG(MTD_DEBUG_LEVEL0, "MXC_ND : NAND resume\n"); - if (mtd) { - /* Enable the NFC clock */ - clk_enable(host->clk); - mtd->resume(mtd); - } + /* Enable the NFC clock */ + clk_enable(host->clk); + mtd->resume(mtd); return ret; } -- cgit v1.2.3-58-ga151 From 9c14b153e6af1301f022d34f1f63888f333e3ef5 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 11 Jan 2010 17:53:16 +0100 Subject: mtd: mxc-nand: don't disable clock in mxcnd-suspend MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The clock must already be off after mtd->suspend. Disabling it again results in an negative overflow of the clock usage count. This didn't hurt as mxcnd_resume undid it after wake up. Signed-off-by: Uwe Kleine-König Acked-by: Sascha Hauer Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/mxc_nand.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 84f363571c24..970ce6bd06a8 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -888,8 +888,12 @@ static int mxcnd_suspend(struct platform_device *pdev, pm_message_t state) DEBUG(MTD_DEBUG_LEVEL0, "MXC_ND : NAND suspend\n"); ret = mtd->suspend(mtd); - /* Disable the NFC clock */ - clk_disable(host->clk); + + /* + * nand_suspend locks the device for exclusive access, so + * the clock must already be off. + */ + BUG_ON(!ret && host->clk_act); return ret; } @@ -903,8 +907,6 @@ static int mxcnd_resume(struct platform_device *pdev) DEBUG(MTD_DEBUG_LEVEL0, "MXC_ND : NAND resume\n"); - /* Enable the NFC clock */ - clk_enable(host->clk); mtd->resume(mtd); return ret; -- cgit v1.2.3-58-ga151 From e99e90aef17517d99be8e049b2f5cc563cd6862a Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 29 Jan 2010 20:58:08 +0000 Subject: mtd: nandsim: Define CONFIG_NANDSIM_MAX_PARTS and use it instead of MAX_MTD_DEVICES MAX_MTD_DEVICES is about to be removed. Signed-off-by: Ben Hutchings Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nandsim.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 3cf918048673..8a0a5d16e0eb 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -80,6 +80,9 @@ #ifndef CONFIG_NANDSIM_DBG #define CONFIG_NANDSIM_DBG 0 #endif +#ifndef CONFIG_NANDSIM_MAX_PARTS +#define CONFIG_NANDSIM_MAX_PARTS 32 +#endif static uint first_id_byte = CONFIG_NANDSIM_FIRST_ID_BYTE; static uint second_id_byte = CONFIG_NANDSIM_SECOND_ID_BYTE; @@ -94,7 +97,7 @@ static uint bus_width = CONFIG_NANDSIM_BUS_WIDTH; static uint do_delays = CONFIG_NANDSIM_DO_DELAYS; static uint log = CONFIG_NANDSIM_LOG; static uint dbg = CONFIG_NANDSIM_DBG; -static unsigned long parts[MAX_MTD_DEVICES]; +static unsigned long parts[CONFIG_NANDSIM_MAX_PARTS]; static unsigned int parts_num; static char *badblocks = NULL; static char *weakblocks = NULL; @@ -288,7 +291,7 @@ union ns_mem { * The structure which describes all the internal simulator data. */ struct nandsim { - struct mtd_partition partitions[MAX_MTD_DEVICES]; + struct mtd_partition partitions[CONFIG_NANDSIM_MAX_PARTS]; unsigned int nbparts; uint busw; /* flash chip bus width (8 or 16) */ -- cgit v1.2.3-58-ga151 From 6fe5a6acdc126107e54a6c584536e09ab7dde949 Mon Sep 17 00:00:00 2001 From: Vimal Singh Date: Wed, 3 Feb 2010 14:12:24 +0530 Subject: mtd: nand: create a helper verification function ... verification for 'nand_erase_nand' These checks are expected to be used by 'nand_lock' and 'nand_unlock' routines too. As all these three are block aligned operations. So, creating a helper function for this makes sense. Signed-off-by: Vimal Singh Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 48 +++++++++++++++++++++++++++----------------- 1 file changed, 30 insertions(+), 18 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 8f2958fe2148..2dfeb4bea83a 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -108,6 +108,35 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, */ DEFINE_LED_TRIGGER(nand_led_trigger); +static int check_offs_len(struct mtd_info *mtd, + loff_t ofs, uint64_t len) +{ + struct nand_chip *chip = mtd->priv; + int ret = 0; + + /* Start address must align on block boundary */ + if (ofs & ((1 << chip->phys_erase_shift) - 1)) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Unaligned address\n", __func__); + ret = -EINVAL; + } + + /* Length must align on block boundary */ + if (len & ((1 << chip->phys_erase_shift) - 1)) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Length not block aligned\n", + __func__); + ret = -EINVAL; + } + + /* Do not allow past end of device */ + if (ofs + len > mtd->size) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Past end of device\n", + __func__); + ret = -EINVAL; + } + + return ret; +} + /** * nand_release_device - [GENERIC] release chip * @mtd: MTD device structure @@ -2293,25 +2322,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, __func__, (unsigned long long)instr->addr, (unsigned long long)instr->len); - /* Start address must align on block boundary */ - if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Unaligned address\n", __func__); - return -EINVAL; - } - - /* Length must align on block boundary */ - if (instr->len & ((1 << chip->phys_erase_shift) - 1)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Length not block aligned\n", - __func__); - return -EINVAL; - } - - /* Do not allow erase past end of device */ - if ((instr->len + instr->addr) > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Erase past end of device\n", - __func__); + if (check_offs_len(mtd, instr->addr, instr->len)) return -EINVAL; - } instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; -- cgit v1.2.3-58-ga151 From 7d70f334ad2bf1b3aaa1f0699c0f442e14bcc9e0 Mon Sep 17 00:00:00 2001 From: Vimal Singh Date: Mon, 8 Feb 2010 15:50:49 +0530 Subject: mtd: nand: add lock/unlock routines Add nand lock / unlock routines. At least 'micron' parts support this. Signed-off-by: Vimal Singh Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 164 +++++++++++++++++++++++++++++++++++++++++++ include/linux/mtd/nand.h | 10 +++ 2 files changed, 174 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 2dfeb4bea83a..ed62e1ee0f81 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -863,6 +863,168 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) return status; } +/** + * __nand_unlock - [REPLACABLE] unlocks specified locked blockes + * + * @param mtd - mtd info + * @param ofs - offset to start unlock from + * @param len - length to unlock + * @invert - when = 0, unlock the range of blocks within the lower and + * upper boundary address + * whne = 1, unlock the range of blocks outside the boundaries + * of the lower and upper boundary address + * + * @return - unlock status + */ +static int __nand_unlock(struct mtd_info *mtd, loff_t ofs, + uint64_t len, int invert) +{ + int ret = 0; + int status, page; + struct nand_chip *chip = mtd->priv; + + /* Submit address of first page to unlock */ + page = ofs >> chip->page_shift; + chip->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & chip->pagemask); + + /* Submit address of last page to unlock */ + page = (ofs + len) >> chip->page_shift; + chip->cmdfunc(mtd, NAND_CMD_UNLOCK2, -1, + (page | invert) & chip->pagemask); + + /* Call wait ready function */ + status = chip->waitfunc(mtd, chip); + udelay(1000); + /* See if device thinks it succeeded */ + if (status & 0x01) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Error status = 0x%08x\n", + __func__, status); + ret = -EIO; + } + + return ret; +} + +/** + * nand_unlock - [REPLACABLE] unlocks specified locked blockes + * + * @param mtd - mtd info + * @param ofs - offset to start unlock from + * @param len - length to unlock + * + * @return - unlock status + */ +int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + int ret = 0; + int chipnr; + struct nand_chip *chip = mtd->priv; + + DEBUG(MTD_DEBUG_LEVEL3, "%s: start = 0x%012llx, len = %llu\n", + __func__, (unsigned long long)ofs, len); + + if (check_offs_len(mtd, ofs, len)) + ret = -EINVAL; + + /* Align to last block address if size addresses end of the device */ + if (ofs + len == mtd->size) + len -= mtd->erasesize; + + nand_get_device(chip, mtd, FL_UNLOCKING); + + /* Shift to get chip number */ + chipnr = ofs >> chip->chip_shift; + + chip->select_chip(mtd, chipnr); + + /* Check, if it is write protected */ + if (nand_check_wp(mtd)) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Device is write protected!!!\n", + __func__); + ret = -EIO; + goto out; + } + + ret = __nand_unlock(mtd, ofs, len, 0); + +out: + /* de-select the NAND device */ + chip->select_chip(mtd, -1); + + nand_release_device(mtd); + + return ret; +} + +/** + * nand_lock - [REPLACABLE] locks all blockes present in the device + * + * @param mtd - mtd info + * @param ofs - offset to start unlock from + * @param len - length to unlock + * + * @return - lock status + * + * This feature is not support in many NAND parts. 'Micron' NAND parts + * do have this feature, but it allows only to lock all blocks not for + * specified range for block. + * + * Implementing 'lock' feature by making use of 'unlock', for now. + */ +int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + int ret = 0; + int chipnr, status, page; + struct nand_chip *chip = mtd->priv; + + DEBUG(MTD_DEBUG_LEVEL3, "%s: start = 0x%012llx, len = %llu\n", + __func__, (unsigned long long)ofs, len); + + if (check_offs_len(mtd, ofs, len)) + ret = -EINVAL; + + nand_get_device(chip, mtd, FL_LOCKING); + + /* Shift to get chip number */ + chipnr = ofs >> chip->chip_shift; + + chip->select_chip(mtd, chipnr); + + /* Check, if it is write protected */ + if (nand_check_wp(mtd)) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Device is write protected!!!\n", + __func__); + status = MTD_ERASE_FAILED; + ret = -EIO; + goto out; + } + + /* Submit address of first page to lock */ + page = ofs >> chip->page_shift; + chip->cmdfunc(mtd, NAND_CMD_LOCK, -1, page & chip->pagemask); + + /* Call wait ready function */ + status = chip->waitfunc(mtd, chip); + udelay(1000); + /* See if device thinks it succeeded */ + if (status & 0x01) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: Error status = 0x%08x\n", + __func__, status); + ret = -EIO; + goto out; + } + + ret = __nand_unlock(mtd, ofs, len, 0x1); + +out: + /* de-select the NAND device */ + chip->select_chip(mtd, -1); + + nand_release_device(mtd); + + return ret; +} + /** * nand_read_page_raw - [Intern] read raw page data without ecc * @mtd: mtd info structure @@ -3089,6 +3251,8 @@ void nand_release(struct mtd_info *mtd) kfree(chip->buffers); } +EXPORT_SYMBOL_GPL(nand_lock); +EXPORT_SYMBOL_GPL(nand_unlock); EXPORT_SYMBOL_GPL(nand_scan); EXPORT_SYMBOL_GPL(nand_scan_ident); EXPORT_SYMBOL_GPL(nand_scan_tail); diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index ccab9dfc5217..48bc2c54302c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -38,6 +38,12 @@ extern void nand_release (struct mtd_info *mtd); /* Internal helper for board drivers which need to override command function */ extern void nand_wait_ready(struct mtd_info *mtd); +/* locks all blockes present in the device */ +extern int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); + +/* unlocks specified locked blockes */ +extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); + /* The maximum number of NAND chips in an array */ #define NAND_MAX_CHIPS 8 @@ -82,6 +88,10 @@ extern void nand_wait_ready(struct mtd_info *mtd); #define NAND_CMD_ERASE2 0xd0 #define NAND_CMD_RESET 0xff +#define NAND_CMD_LOCK 0x2a +#define NAND_CMD_UNLOCK1 0x23 +#define NAND_CMD_UNLOCK2 0x24 + /* Extended commands for large page devices */ #define NAND_CMD_READSTART 0x30 #define NAND_CMD_RNDOUTSTART 0xE0 -- cgit v1.2.3-58-ga151 From 66803762c19f2e45ff4cc13cf63194589eb698c2 Mon Sep 17 00:00:00 2001 From: Eric Benard Date: Wed, 9 Dec 2009 12:12:43 +0100 Subject: mtd: mxc_nand: add RESET command support mxc_nand driver must support the RESET Command in order to support Micron NAND which need a reset before any other command. Signed-off-by: Eric Benard Acked-by: Sascha Hauer Signed-off-by: David Woodhouse --- drivers/mtd/nand/mxc_nand.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 970ce6bd06a8..06cc378196b5 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -638,6 +638,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: + case NAND_CMD_RESET: send_cmd(host, command, false); mxc_do_addr_cycle(mtd, column, page_addr); -- cgit v1.2.3-58-ga151 From bdaefc41627b6f2815ef7aa476dfa4ebb3ad499f Mon Sep 17 00:00:00 2001 From: Vimal Singh Date: Tue, 5 Jan 2010 12:49:24 +0530 Subject: mtd: omap2: fixing compilation warning Fixing below warning in compilation: drivers/mtd/nand/omap2.c: In function 'omap_write_buf_dma_pref': drivers/mtd/nand/omap2.c:508: warning: passing argument 2 of 'omap_nand_dma_transfer' discards qualifiers from pointer target type Signed-off-by: Vimal Singh Signed-off-by: David Woodhouse --- drivers/mtd/nand/omap2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 1bb799f0125c..4eea97c03b2b 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -505,7 +505,7 @@ static void omap_write_buf_dma_pref(struct mtd_info *mtd, omap_write_buf_pref(mtd, buf, len); else /* start transfer in DMA mode */ - omap_nand_dma_transfer(mtd, buf, len, 0x1); + omap_nand_dma_transfer(mtd, (u_char *) buf, len, 0x1); } /** -- cgit v1.2.3-58-ga151 From f35b6eda5184e46bf2393d8970b4b9498daf7bcf Mon Sep 17 00:00:00 2001 From: Vimal Singh Date: Tue, 5 Jan 2010 16:01:08 +0530 Subject: mtd: omap2: correct 'info' pointer in 'omap_nand_remove' Removing OMAP NAND driver, when loaded as a module, gives error and does not get success. This fixes this and makes driver loadable and removable run time. Signed-off-by: Vimal Singh Signed-off-by: David Woodhouse --- drivers/mtd/nand/omap2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 4eea97c03b2b..16120e2dd4a3 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -1054,7 +1054,8 @@ out_free_info: static int omap_nand_remove(struct platform_device *pdev) { struct mtd_info *mtd = platform_get_drvdata(pdev); - struct omap_nand_info *info = mtd->priv; + struct omap_nand_info *info = container_of(mtd, struct omap_nand_info, + mtd); platform_set_drvdata(pdev, NULL); if (use_dma) -- cgit v1.2.3-58-ga151 From c3341d0ceb4de1680572024f50233403c6a8b10d Mon Sep 17 00:00:00 2001 From: Vimal Singh Date: Thu, 7 Jan 2010 12:16:26 +0530 Subject: mtd: omap2 fix prefetch mode read issue There is a bug in nand prefetch read routine, which comes into effect only if nand device is a 16-bit device (as we have in zoom boards). This bug is effective only with below combination of conditions: 1. nand deivce, in use, is a 16 bit device 2. nand driver supports 'subpage' read 3. SW ECC is in use This was not seen old kernel (ex: .23), because when, in early days, we tested this (nand prefetch read in LDP boards) there was no 'subpage read' support. Later when we had subpage read in (.27) kernel, we had hw ecc enabled always in our internal tree. So, we missed this bug. This patch fixes the issue. Signed-off-by: Vimal Singh Signed-off-by: David Woodhouse --- drivers/mtd/nand/omap2.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 16120e2dd4a3..7df303aed8a4 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -295,11 +295,14 @@ static void omap_read_buf_pref(struct mtd_info *mtd, u_char *buf, int len) u32 *p = (u32 *)buf; /* take care of subpage reads */ - for (; len % 4 != 0; ) { - *buf++ = __raw_readb(info->nand.IO_ADDR_R); - len--; + if (len % 4) { + if (info->nand.options & NAND_BUSWIDTH_16) + omap_read_buf16(mtd, buf, len % 4); + else + omap_read_buf8(mtd, buf, len % 4); + p = (u32 *) (buf + len % 4); + len -= len % 4; } - p = (u32 *) buf; /* configure and start prefetch transfer */ ret = gpmc_prefetch_enable(info->gpmc_cs, 0x0, len, 0x0); -- cgit v1.2.3-58-ga151 From 1385858ee07cbfd68c503a10e4a526d24223d465 Mon Sep 17 00:00:00 2001 From: Roel Kluin Date: Fri, 22 Jan 2010 22:22:52 +0100 Subject: mtd: nand_bcm: fix hot spin and code duplication In the branch where pagesize equalled NAND_DATA_ACCESS_SIZE, NumToRead wasn't decremented in the `while (numToRead > 11)' loop. Also the first and last while loops were duplicated in both branches. Signed-off-by: Roel Kluin Acked-by: Leo Chen Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_bcm_umi.h | 71 +++++++++++++++-------------------------- 1 file changed, 25 insertions(+), 46 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_bcm_umi.h b/drivers/mtd/nand/nand_bcm_umi.h index 7cec2cd97854..198b304d6f72 100644 --- a/drivers/mtd/nand/nand_bcm_umi.h +++ b/drivers/mtd/nand/nand_bcm_umi.h @@ -167,18 +167,27 @@ static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, int numToRead = 16; /* There are 16 bytes per sector in the OOB */ /* ECC is already paused when this function is called */ + if (pageSize != NAND_DATA_ACCESS_SIZE) { + /* skip BI */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + } - if (pageSize == NAND_DATA_ACCESS_SIZE) { - while (numToRead > numEccBytes) { - /* skip free oob region */ + while (numToRead > numEccBytes) { + /* skip free oob region */ #if defined(__KERNEL__) && !defined(STANDALONE) - *oobp++ = REG_NAND_DATA8; + *oobp++ = REG_NAND_DATA8; #else - REG_NAND_DATA8; + REG_NAND_DATA8; #endif - numToRead--; - } + numToRead--; + } + if (pageSize == NAND_DATA_ACCESS_SIZE) { /* read ECC bytes before BI */ nand_bcm_umi_bch_resume_read_ecc_calc(); @@ -190,6 +199,7 @@ static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, #else eccCalc[eccPos++] = REG_NAND_DATA8; #endif + numToRead--; } nand_bcm_umi_bch_pause_read_ecc_calc(); @@ -204,49 +214,18 @@ static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, numToRead--; } - /* read ECC bytes */ - nand_bcm_umi_bch_resume_read_ecc_calc(); - while (numToRead) { -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp = REG_NAND_DATA8; - eccCalc[eccPos++] = *oobp; - oobp++; -#else - eccCalc[eccPos++] = REG_NAND_DATA8; -#endif - numToRead--; - } - } else { - /* skip BI */ + } + /* read ECC bytes */ + nand_bcm_umi_bch_resume_read_ecc_calc(); + while (numToRead) { #if defined(__KERNEL__) && !defined(STANDALONE) - *oobp++ = REG_NAND_DATA8; + *oobp = REG_NAND_DATA8; + eccCalc[eccPos++] = *oobp; + oobp++; #else - REG_NAND_DATA8; + eccCalc[eccPos++] = REG_NAND_DATA8; #endif numToRead--; - - while (numToRead > numEccBytes) { - /* skip free oob region */ -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp++ = REG_NAND_DATA8; -#else - REG_NAND_DATA8; -#endif - numToRead--; - } - - /* read ECC bytes */ - nand_bcm_umi_bch_resume_read_ecc_calc(); - while (numToRead) { -#if defined(__KERNEL__) && !defined(STANDALONE) - *oobp = REG_NAND_DATA8; - eccCalc[eccPos++] = *oobp; - oobp++; -#else - eccCalc[eccPos++] = REG_NAND_DATA8; -#endif - numToRead--; - } } } -- cgit v1.2.3-58-ga151 From bb315f749f8c800cb8bf8d7dabc4b5fbab97b328 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Mon, 15 Feb 2010 18:35:05 +0100 Subject: mtd: nand: Add MPC5121 NAND Flash Controller driver Adds NAND Flash Controller driver for MPC5121 Revision 2. All device features, except hardware ECC and power management, are supported. Signed-off-by: Piotr Ziecik Signed-off-by: Wolfgang Denk Signed-off-by: Anatolij Gustschin Acked-by: Grant Likely Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 7 + drivers/mtd/nand/Makefile | 1 + drivers/mtd/nand/mpc5121_nfc.c | 916 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 924 insertions(+) create mode 100644 drivers/mtd/nand/mpc5121_nfc.c (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 318ef2f2194f..8a7ecfab4fe7 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -444,6 +444,13 @@ config MTD_NAND_FSL_UPM Enables support for NAND Flash chips wired onto Freescale PowerPC processor localbus with User-Programmable Machine support. +config MTD_NAND_MPC5121_NFC + tristate "MPC5121 built-in NAND Flash Controller support" + depends on PPC_MPC512x + help + This enables the driver for the NAND flash controller on the + MPC5121 SoC. + config MTD_NAND_MXC tristate "MXC NAND support" depends on ARCH_MX2 || ARCH_MX3 diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 355786846bc9..1d19b7ab903a 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -42,5 +42,6 @@ obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o obj-$(CONFIG_MTD_NAND_BCM_UMI) += bcm_umi_nand.o nand_bcm_umi.o +obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o nand-objs := nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c new file mode 100644 index 000000000000..d7333f4dae86 --- /dev/null +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -0,0 +1,916 @@ +/* + * Copyright 2004-2008 Freescale Semiconductor, Inc. + * Copyright 2009 Semihalf. + * + * Approved as OSADL project by a majority of OSADL members and funded + * by OSADL membership fees in 2009; for details see www.osadl.org. + * + * Based on original driver from Freescale Semiconductor + * written by John Rigby on basis + * of drivers/mtd/nand/mxc_nand.c. Reworked and extended + * Piotr Ziecik . + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/* Addresses for NFC MAIN RAM BUFFER areas */ +#define NFC_MAIN_AREA(n) ((n) * 0x200) + +/* Addresses for NFC SPARE BUFFER areas */ +#define NFC_SPARE_BUFFERS 8 +#define NFC_SPARE_LEN 0x40 +#define NFC_SPARE_AREA(n) (0x1000 + ((n) * NFC_SPARE_LEN)) + +/* MPC5121 NFC registers */ +#define NFC_BUF_ADDR 0x1E04 +#define NFC_FLASH_ADDR 0x1E06 +#define NFC_FLASH_CMD 0x1E08 +#define NFC_CONFIG 0x1E0A +#define NFC_ECC_STATUS1 0x1E0C +#define NFC_ECC_STATUS2 0x1E0E +#define NFC_SPAS 0x1E10 +#define NFC_WRPROT 0x1E12 +#define NFC_NF_WRPRST 0x1E18 +#define NFC_CONFIG1 0x1E1A +#define NFC_CONFIG2 0x1E1C +#define NFC_UNLOCKSTART_BLK0 0x1E20 +#define NFC_UNLOCKEND_BLK0 0x1E22 +#define NFC_UNLOCKSTART_BLK1 0x1E24 +#define NFC_UNLOCKEND_BLK1 0x1E26 +#define NFC_UNLOCKSTART_BLK2 0x1E28 +#define NFC_UNLOCKEND_BLK2 0x1E2A +#define NFC_UNLOCKSTART_BLK3 0x1E2C +#define NFC_UNLOCKEND_BLK3 0x1E2E + +/* Bit Definitions: NFC_BUF_ADDR */ +#define NFC_RBA_MASK (7 << 0) +#define NFC_ACTIVE_CS_SHIFT 5 +#define NFC_ACTIVE_CS_MASK (3 << NFC_ACTIVE_CS_SHIFT) + +/* Bit Definitions: NFC_CONFIG */ +#define NFC_BLS_UNLOCKED (1 << 1) + +/* Bit Definitions: NFC_CONFIG1 */ +#define NFC_ECC_4BIT (1 << 0) +#define NFC_FULL_PAGE_DMA (1 << 1) +#define NFC_SPARE_ONLY (1 << 2) +#define NFC_ECC_ENABLE (1 << 3) +#define NFC_INT_MASK (1 << 4) +#define NFC_BIG_ENDIAN (1 << 5) +#define NFC_RESET (1 << 6) +#define NFC_CE (1 << 7) +#define NFC_ONE_CYCLE (1 << 8) +#define NFC_PPB_32 (0 << 9) +#define NFC_PPB_64 (1 << 9) +#define NFC_PPB_128 (2 << 9) +#define NFC_PPB_256 (3 << 9) +#define NFC_PPB_MASK (3 << 9) +#define NFC_FULL_PAGE_INT (1 << 11) + +/* Bit Definitions: NFC_CONFIG2 */ +#define NFC_COMMAND (1 << 0) +#define NFC_ADDRESS (1 << 1) +#define NFC_INPUT (1 << 2) +#define NFC_OUTPUT (1 << 3) +#define NFC_ID (1 << 4) +#define NFC_STATUS (1 << 5) +#define NFC_CMD_FAIL (1 << 15) +#define NFC_INT (1 << 15) + +/* Bit Definitions: NFC_WRPROT */ +#define NFC_WPC_LOCK_TIGHT (1 << 0) +#define NFC_WPC_LOCK (1 << 1) +#define NFC_WPC_UNLOCK (1 << 2) + +#define DRV_NAME "mpc5121_nfc" + +/* Timeouts */ +#define NFC_RESET_TIMEOUT 1000 /* 1 ms */ +#define NFC_TIMEOUT (HZ / 10) /* 1/10 s */ + +struct mpc5121_nfc_prv { + struct mtd_info mtd; + struct nand_chip chip; + int irq; + void __iomem *regs; + struct clk *clk; + wait_queue_head_t irq_waitq; + uint column; + int spareonly; + void __iomem *csreg; + struct device *dev; +}; + +static void mpc5121_nfc_done(struct mtd_info *mtd); + +#ifdef CONFIG_MTD_PARTITIONS +static const char *mpc5121_nfc_pprobes[] = { "cmdlinepart", NULL }; +#endif + +/* Read NFC register */ +static inline u16 nfc_read(struct mtd_info *mtd, uint reg) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + + return in_be16(prv->regs + reg); +} + +/* Write NFC register */ +static inline void nfc_write(struct mtd_info *mtd, uint reg, u16 val) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + + out_be16(prv->regs + reg, val); +} + +/* Set bits in NFC register */ +static inline void nfc_set(struct mtd_info *mtd, uint reg, u16 bits) +{ + nfc_write(mtd, reg, nfc_read(mtd, reg) | bits); +} + +/* Clear bits in NFC register */ +static inline void nfc_clear(struct mtd_info *mtd, uint reg, u16 bits) +{ + nfc_write(mtd, reg, nfc_read(mtd, reg) & ~bits); +} + +/* Invoke address cycle */ +static inline void mpc5121_nfc_send_addr(struct mtd_info *mtd, u16 addr) +{ + nfc_write(mtd, NFC_FLASH_ADDR, addr); + nfc_write(mtd, NFC_CONFIG2, NFC_ADDRESS); + mpc5121_nfc_done(mtd); +} + +/* Invoke command cycle */ +static inline void mpc5121_nfc_send_cmd(struct mtd_info *mtd, u16 cmd) +{ + nfc_write(mtd, NFC_FLASH_CMD, cmd); + nfc_write(mtd, NFC_CONFIG2, NFC_COMMAND); + mpc5121_nfc_done(mtd); +} + +/* Send data from NFC buffers to NAND flash */ +static inline void mpc5121_nfc_send_prog_page(struct mtd_info *mtd) +{ + nfc_clear(mtd, NFC_BUF_ADDR, NFC_RBA_MASK); + nfc_write(mtd, NFC_CONFIG2, NFC_INPUT); + mpc5121_nfc_done(mtd); +} + +/* Receive data from NAND flash */ +static inline void mpc5121_nfc_send_read_page(struct mtd_info *mtd) +{ + nfc_clear(mtd, NFC_BUF_ADDR, NFC_RBA_MASK); + nfc_write(mtd, NFC_CONFIG2, NFC_OUTPUT); + mpc5121_nfc_done(mtd); +} + +/* Receive ID from NAND flash */ +static inline void mpc5121_nfc_send_read_id(struct mtd_info *mtd) +{ + nfc_clear(mtd, NFC_BUF_ADDR, NFC_RBA_MASK); + nfc_write(mtd, NFC_CONFIG2, NFC_ID); + mpc5121_nfc_done(mtd); +} + +/* Receive status from NAND flash */ +static inline void mpc5121_nfc_send_read_status(struct mtd_info *mtd) +{ + nfc_clear(mtd, NFC_BUF_ADDR, NFC_RBA_MASK); + nfc_write(mtd, NFC_CONFIG2, NFC_STATUS); + mpc5121_nfc_done(mtd); +} + +/* NFC interrupt handler */ +static irqreturn_t mpc5121_nfc_irq(int irq, void *data) +{ + struct mtd_info *mtd = data; + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + + nfc_set(mtd, NFC_CONFIG1, NFC_INT_MASK); + wake_up(&prv->irq_waitq); + + return IRQ_HANDLED; +} + +/* Wait for operation complete */ +static void mpc5121_nfc_done(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + int rv; + + if ((nfc_read(mtd, NFC_CONFIG2) & NFC_INT) == 0) { + nfc_clear(mtd, NFC_CONFIG1, NFC_INT_MASK); + rv = wait_event_timeout(prv->irq_waitq, + (nfc_read(mtd, NFC_CONFIG2) & NFC_INT), NFC_TIMEOUT); + + if (!rv) + dev_warn(prv->dev, + "Timeout while waiting for interrupt.\n"); + } + + nfc_clear(mtd, NFC_CONFIG2, NFC_INT); +} + +/* Do address cycle(s) */ +static void mpc5121_nfc_addr_cycle(struct mtd_info *mtd, int column, int page) +{ + struct nand_chip *chip = mtd->priv; + u32 pagemask = chip->pagemask; + + if (column != -1) { + mpc5121_nfc_send_addr(mtd, column); + if (mtd->writesize > 512) + mpc5121_nfc_send_addr(mtd, column >> 8); + } + + if (page != -1) { + do { + mpc5121_nfc_send_addr(mtd, page & 0xFF); + page >>= 8; + pagemask >>= 8; + } while (pagemask); + } +} + +/* Control chip select signals */ +static void mpc5121_nfc_select_chip(struct mtd_info *mtd, int chip) +{ + if (chip < 0) { + nfc_clear(mtd, NFC_CONFIG1, NFC_CE); + return; + } + + nfc_clear(mtd, NFC_BUF_ADDR, NFC_ACTIVE_CS_MASK); + nfc_set(mtd, NFC_BUF_ADDR, (chip << NFC_ACTIVE_CS_SHIFT) & + NFC_ACTIVE_CS_MASK); + nfc_set(mtd, NFC_CONFIG1, NFC_CE); +} + +/* Init external chip select logic on ADS5121 board */ +static int ads5121_chipselect_init(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + struct device_node *dn; + + dn = of_find_compatible_node(NULL, NULL, "fsl,mpc5121ads-cpld"); + if (dn) { + prv->csreg = of_iomap(dn, 0); + of_node_put(dn); + if (!prv->csreg) + return -ENOMEM; + + /* CPLD Register 9 controls NAND /CE Lines */ + prv->csreg += 9; + return 0; + } + + return -EINVAL; +} + +/* Control chips select signal on ADS5121 board */ +static void ads5121_select_chip(struct mtd_info *mtd, int chip) +{ + struct nand_chip *nand = mtd->priv; + struct mpc5121_nfc_prv *prv = nand->priv; + u8 v; + + v = in_8(prv->csreg); + v |= 0x0F; + + if (chip >= 0) { + mpc5121_nfc_select_chip(mtd, 0); + v &= ~(1 << chip); + } else + mpc5121_nfc_select_chip(mtd, -1); + + out_8(prv->csreg, v); +} + +/* Read NAND Ready/Busy signal */ +static int mpc5121_nfc_dev_ready(struct mtd_info *mtd) +{ + /* + * NFC handles ready/busy signal internally. Therefore, this function + * always returns status as ready. + */ + return 1; +} + +/* Write command to NAND flash */ +static void mpc5121_nfc_command(struct mtd_info *mtd, unsigned command, + int column, int page) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + + prv->column = (column >= 0) ? column : 0; + prv->spareonly = 0; + + switch (command) { + case NAND_CMD_PAGEPROG: + mpc5121_nfc_send_prog_page(mtd); + break; + /* + * NFC does not support sub-page reads and writes, + * so emulate them using full page transfers. + */ + case NAND_CMD_READ0: + column = 0; + break; + + case NAND_CMD_READ1: + prv->column += 256; + command = NAND_CMD_READ0; + column = 0; + break; + + case NAND_CMD_READOOB: + prv->spareonly = 1; + command = NAND_CMD_READ0; + column = 0; + break; + + case NAND_CMD_SEQIN: + mpc5121_nfc_command(mtd, NAND_CMD_READ0, column, page); + column = 0; + break; + + case NAND_CMD_ERASE1: + case NAND_CMD_ERASE2: + case NAND_CMD_READID: + case NAND_CMD_STATUS: + break; + + default: + return; + } + + mpc5121_nfc_send_cmd(mtd, command); + mpc5121_nfc_addr_cycle(mtd, column, page); + + switch (command) { + case NAND_CMD_READ0: + if (mtd->writesize > 512) + mpc5121_nfc_send_cmd(mtd, NAND_CMD_READSTART); + mpc5121_nfc_send_read_page(mtd); + break; + + case NAND_CMD_READID: + mpc5121_nfc_send_read_id(mtd); + break; + + case NAND_CMD_STATUS: + mpc5121_nfc_send_read_status(mtd); + if (chip->options & NAND_BUSWIDTH_16) + prv->column = 1; + else + prv->column = 0; + break; + } +} + +/* Copy data from/to NFC spare buffers. */ +static void mpc5121_nfc_copy_spare(struct mtd_info *mtd, uint offset, + u8 *buffer, uint size, int wr) +{ + struct nand_chip *nand = mtd->priv; + struct mpc5121_nfc_prv *prv = nand->priv; + uint o, s, sbsize, blksize; + + /* + * NAND spare area is available through NFC spare buffers. + * The NFC divides spare area into (page_size / 512) chunks. + * Each chunk is placed into separate spare memory area, using + * first (spare_size / num_of_chunks) bytes of the buffer. + * + * For NAND device in which the spare area is not divided fully + * by the number of chunks, number of used bytes in each spare + * buffer is rounded down to the nearest even number of bytes, + * and all remaining bytes are added to the last used spare area. + * + * For more information read section 26.6.10 of MPC5121e + * Microcontroller Reference Manual, Rev. 3. + */ + + /* Calculate number of valid bytes in each spare buffer */ + sbsize = (mtd->oobsize / (mtd->writesize / 512)) & ~1; + + while (size) { + /* Calculate spare buffer number */ + s = offset / sbsize; + if (s > NFC_SPARE_BUFFERS - 1) + s = NFC_SPARE_BUFFERS - 1; + + /* + * Calculate offset to requested data block in selected spare + * buffer and its size. + */ + o = offset - (s * sbsize); + blksize = min(sbsize - o, size); + + if (wr) + memcpy_toio(prv->regs + NFC_SPARE_AREA(s) + o, + buffer, blksize); + else + memcpy_fromio(buffer, + prv->regs + NFC_SPARE_AREA(s) + o, blksize); + + buffer += blksize; + offset += blksize; + size -= blksize; + }; +} + +/* Copy data from/to NFC main and spare buffers */ +static void mpc5121_nfc_buf_copy(struct mtd_info *mtd, u_char *buf, int len, + int wr) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + uint c = prv->column; + uint l; + + /* Handle spare area access */ + if (prv->spareonly || c >= mtd->writesize) { + /* Calculate offset from beginning of spare area */ + if (c >= mtd->writesize) + c -= mtd->writesize; + + prv->column += len; + mpc5121_nfc_copy_spare(mtd, c, buf, len, wr); + return; + } + + /* + * Handle main area access - limit copy length to prevent + * crossing main/spare boundary. + */ + l = min((uint)len, mtd->writesize - c); + prv->column += l; + + if (wr) + memcpy_toio(prv->regs + NFC_MAIN_AREA(0) + c, buf, l); + else + memcpy_fromio(buf, prv->regs + NFC_MAIN_AREA(0) + c, l); + + /* Handle crossing main/spare boundary */ + if (l != len) { + buf += l; + len -= l; + mpc5121_nfc_buf_copy(mtd, buf, len, wr); + } +} + +/* Read data from NFC buffers */ +static void mpc5121_nfc_read_buf(struct mtd_info *mtd, u_char *buf, int len) +{ + mpc5121_nfc_buf_copy(mtd, buf, len, 0); +} + +/* Write data to NFC buffers */ +static void mpc5121_nfc_write_buf(struct mtd_info *mtd, + const u_char *buf, int len) +{ + mpc5121_nfc_buf_copy(mtd, (u_char *)buf, len, 1); +} + +/* Compare buffer with NAND flash */ +static int mpc5121_nfc_verify_buf(struct mtd_info *mtd, + const u_char *buf, int len) +{ + u_char tmp[256]; + uint bsize; + + while (len) { + bsize = min(len, 256); + mpc5121_nfc_read_buf(mtd, tmp, bsize); + + if (memcmp(buf, tmp, bsize)) + return 1; + + buf += bsize; + len -= bsize; + } + + return 0; +} + +/* Read byte from NFC buffers */ +static u8 mpc5121_nfc_read_byte(struct mtd_info *mtd) +{ + u8 tmp; + + mpc5121_nfc_read_buf(mtd, &tmp, sizeof(tmp)); + + return tmp; +} + +/* Read word from NFC buffers */ +static u16 mpc5121_nfc_read_word(struct mtd_info *mtd) +{ + u16 tmp; + + mpc5121_nfc_read_buf(mtd, (u_char *)&tmp, sizeof(tmp)); + + return tmp; +} + +/* + * Read NFC configuration from Reset Config Word + * + * NFC is configured during reset in basis of information stored + * in Reset Config Word. There is no other way to set NAND block + * size, spare size and bus width. + */ +static int mpc5121_nfc_read_hw_config(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + struct mpc512x_reset_module *rm; + struct device_node *rmnode; + uint rcw_pagesize = 0; + uint rcw_sparesize = 0; + uint rcw_width; + uint rcwh; + uint romloc, ps; + + rmnode = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-reset"); + if (!rmnode) { + dev_err(prv->dev, "Missing 'fsl,mpc5121-reset' " + "node in device tree!\n"); + return -ENODEV; + } + + rm = of_iomap(rmnode, 0); + if (!rm) { + dev_err(prv->dev, "Error mapping reset module node!\n"); + return -EBUSY; + } + + rcwh = in_be32(&rm->rcwhr); + + /* Bit 6: NFC bus width */ + rcw_width = ((rcwh >> 6) & 0x1) ? 2 : 1; + + /* Bit 7: NFC Page/Spare size */ + ps = (rcwh >> 7) & 0x1; + + /* Bits [22:21]: ROM Location */ + romloc = (rcwh >> 21) & 0x3; + + /* Decode RCW bits */ + switch ((ps << 2) | romloc) { + case 0x00: + case 0x01: + rcw_pagesize = 512; + rcw_sparesize = 16; + break; + case 0x02: + case 0x03: + rcw_pagesize = 4096; + rcw_sparesize = 128; + break; + case 0x04: + case 0x05: + rcw_pagesize = 2048; + rcw_sparesize = 64; + break; + case 0x06: + case 0x07: + rcw_pagesize = 4096; + rcw_sparesize = 218; + break; + } + + mtd->writesize = rcw_pagesize; + mtd->oobsize = rcw_sparesize; + if (rcw_width == 2) + chip->options |= NAND_BUSWIDTH_16; + + dev_notice(prv->dev, "Configured for " + "%u-bit NAND, page size %u " + "with %u spare.\n", + rcw_width * 8, rcw_pagesize, + rcw_sparesize); + iounmap(rm); + of_node_put(rmnode); + return 0; +} + +/* Free driver resources */ +static void mpc5121_nfc_free(struct device *dev, struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + + if (prv->clk) { + clk_disable(prv->clk); + clk_put(prv->clk); + } + + if (prv->csreg) + iounmap(prv->csreg); +} + +static int __devinit mpc5121_nfc_probe(struct of_device *op, + const struct of_device_id *match) +{ + struct device_node *rootnode, *dn = op->node; + struct device *dev = &op->dev; + struct mpc5121_nfc_prv *prv; + struct resource res; + struct mtd_info *mtd; +#ifdef CONFIG_MTD_PARTITIONS + struct mtd_partition *parts; +#endif + struct nand_chip *chip; + unsigned long regs_paddr, regs_size; + const uint *chips_no; + int resettime = 0; + int retval = 0; + int rev, len; + + /* + * Check SoC revision. This driver supports only NFC + * in MPC5121 revision 2. + */ + rev = (mfspr(SPRN_SVR) >> 4) & 0xF; + if (rev != 2) { + dev_err(dev, "SoC revision %u is not supported!\n", rev); + return -ENXIO; + } + + prv = devm_kzalloc(dev, sizeof(*prv), GFP_KERNEL); + if (!prv) { + dev_err(dev, "Memory exhausted!\n"); + return -ENOMEM; + } + + mtd = &prv->mtd; + chip = &prv->chip; + + mtd->priv = chip; + chip->priv = prv; + prv->dev = dev; + + /* Read NFC configuration from Reset Config Word */ + retval = mpc5121_nfc_read_hw_config(mtd); + if (retval) { + dev_err(dev, "Unable to read NFC config!\n"); + return retval; + } + + prv->irq = irq_of_parse_and_map(dn, 0); + if (prv->irq == NO_IRQ) { + dev_err(dev, "Error mapping IRQ!\n"); + return -EINVAL; + } + + retval = of_address_to_resource(dn, 0, &res); + if (retval) { + dev_err(dev, "Error parsing memory region!\n"); + return retval; + } + + chips_no = of_get_property(dn, "chips", &len); + if (!chips_no || len != sizeof(*chips_no)) { + dev_err(dev, "Invalid/missing 'chips' property!\n"); + return -EINVAL; + } + + regs_paddr = res.start; + regs_size = res.end - res.start + 1; + + if (!devm_request_mem_region(dev, regs_paddr, regs_size, DRV_NAME)) { + dev_err(dev, "Error requesting memory region!\n"); + return -EBUSY; + } + + prv->regs = devm_ioremap(dev, regs_paddr, regs_size); + if (!prv->regs) { + dev_err(dev, "Error mapping memory region!\n"); + return -ENOMEM; + } + + mtd->name = "MPC5121 NAND"; + chip->dev_ready = mpc5121_nfc_dev_ready; + chip->cmdfunc = mpc5121_nfc_command; + chip->read_byte = mpc5121_nfc_read_byte; + chip->read_word = mpc5121_nfc_read_word; + chip->read_buf = mpc5121_nfc_read_buf; + chip->write_buf = mpc5121_nfc_write_buf; + chip->verify_buf = mpc5121_nfc_verify_buf; + chip->select_chip = mpc5121_nfc_select_chip; + chip->options = NAND_NO_AUTOINCR | NAND_USE_FLASH_BBT; + chip->ecc.mode = NAND_ECC_SOFT; + + /* Support external chip-select logic on ADS5121 board */ + rootnode = of_find_node_by_path("/"); + if (of_device_is_compatible(rootnode, "fsl,mpc5121ads")) { + retval = ads5121_chipselect_init(mtd); + if (retval) { + dev_err(dev, "Chipselect init error!\n"); + of_node_put(rootnode); + return retval; + } + + chip->select_chip = ads5121_select_chip; + } + of_node_put(rootnode); + + /* Enable NFC clock */ + prv->clk = clk_get(dev, "nfc_clk"); + if (!prv->clk) { + dev_err(dev, "Unable to acquire NFC clock!\n"); + retval = -ENODEV; + goto error; + } + + clk_enable(prv->clk); + + /* Reset NAND Flash controller */ + nfc_set(mtd, NFC_CONFIG1, NFC_RESET); + while (nfc_read(mtd, NFC_CONFIG1) & NFC_RESET) { + if (resettime++ >= NFC_RESET_TIMEOUT) { + dev_err(dev, "Timeout while resetting NFC!\n"); + retval = -EINVAL; + goto error; + } + + udelay(1); + } + + /* Enable write to NFC memory */ + nfc_write(mtd, NFC_CONFIG, NFC_BLS_UNLOCKED); + + /* Enable write to all NAND pages */ + nfc_write(mtd, NFC_UNLOCKSTART_BLK0, 0x0000); + nfc_write(mtd, NFC_UNLOCKEND_BLK0, 0xFFFF); + nfc_write(mtd, NFC_WRPROT, NFC_WPC_UNLOCK); + + /* + * Setup NFC: + * - Big Endian transfers, + * - Interrupt after full page read/write. + */ + nfc_write(mtd, NFC_CONFIG1, NFC_BIG_ENDIAN | NFC_INT_MASK | + NFC_FULL_PAGE_INT); + + /* Set spare area size */ + nfc_write(mtd, NFC_SPAS, mtd->oobsize >> 1); + + init_waitqueue_head(&prv->irq_waitq); + retval = devm_request_irq(dev, prv->irq, &mpc5121_nfc_irq, 0, DRV_NAME, + mtd); + if (retval) { + dev_err(dev, "Error requesting IRQ!\n"); + goto error; + } + + /* Detect NAND chips */ + if (nand_scan(mtd, *chips_no)) { + dev_err(dev, "NAND Flash not found !\n"); + devm_free_irq(dev, prv->irq, mtd); + retval = -ENXIO; + goto error; + } + + /* Set erase block size */ + switch (mtd->erasesize / mtd->writesize) { + case 32: + nfc_set(mtd, NFC_CONFIG1, NFC_PPB_32); + break; + + case 64: + nfc_set(mtd, NFC_CONFIG1, NFC_PPB_64); + break; + + case 128: + nfc_set(mtd, NFC_CONFIG1, NFC_PPB_128); + break; + + case 256: + nfc_set(mtd, NFC_CONFIG1, NFC_PPB_256); + break; + + default: + dev_err(dev, "Unsupported NAND flash!\n"); + devm_free_irq(dev, prv->irq, mtd); + retval = -ENXIO; + goto error; + } + + dev_set_drvdata(dev, mtd); + + /* Register device in MTD */ +#ifdef CONFIG_MTD_PARTITIONS + retval = parse_mtd_partitions(mtd, mpc5121_nfc_pprobes, &parts, 0); +#ifdef CONFIG_MTD_OF_PARTS + if (retval == 0) + retval = of_mtd_parse_partitions(dev, dn, &parts); +#endif + if (retval < 0) { + dev_err(dev, "Error parsing MTD partitions!\n"); + devm_free_irq(dev, prv->irq, mtd); + retval = -EINVAL; + goto error; + } + + if (retval > 0) + retval = add_mtd_partitions(mtd, parts, retval); + else +#endif + retval = add_mtd_device(mtd); + + if (retval) { + dev_err(dev, "Error adding MTD device!\n"); + devm_free_irq(dev, prv->irq, mtd); + goto error; + } + + return 0; +error: + mpc5121_nfc_free(dev, mtd); + return retval; +} + +static int __devexit mpc5121_nfc_remove(struct of_device *op) +{ + struct device *dev = &op->dev; + struct mtd_info *mtd = dev_get_drvdata(dev); + struct nand_chip *chip = mtd->priv; + struct mpc5121_nfc_prv *prv = chip->priv; + + nand_release(mtd); + devm_free_irq(dev, prv->irq, mtd); + mpc5121_nfc_free(dev, mtd); + + return 0; +} + +static struct of_device_id mpc5121_nfc_match[] __devinitdata = { + { .compatible = "fsl,mpc5121-nfc", }, + {}, +}; + +static struct of_platform_driver mpc5121_nfc_driver = { + .match_table = mpc5121_nfc_match, + .probe = mpc5121_nfc_probe, + .remove = __devexit_p(mpc5121_nfc_remove), + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init mpc5121_nfc_init(void) +{ + return of_register_platform_driver(&mpc5121_nfc_driver); +} + +module_init(mpc5121_nfc_init); + +static void __exit mpc5121_nfc_cleanup(void) +{ + of_unregister_platform_driver(&mpc5121_nfc_driver); +} + +module_exit(mpc5121_nfc_cleanup); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("MPC5121 NAND MTD driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-58-ga151 From 49ef3c6ee11e221b26caf4ac55c2702a37cca103 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:34 +0200 Subject: mtd: nand: make suspend work if device is accessed by kernel threads. Since all userspace threads are frozen at the time the nand_suspend is called, they aren't inside any nand function. We don't call try_to_freeze in nand ether. Thus the only user that can be inside the nand functions is an non freezeable kernel thread. Thus we can safely wait for it to finish. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ed62e1ee0f81..7442b3a29b25 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -773,9 +773,6 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) chip->state = FL_PM_SUSPENDED; spin_unlock(lock); return 0; - } else { - spin_unlock(lock); - return -EAGAIN; } } set_current_state(TASK_UNINTERRUPTIBLE); -- cgit v1.2.3-58-ga151 From 9aca334e854c319ccafea871006fda3814196e7b Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:35 +0200 Subject: mtd: nand: make MTD_OOB_PLACE work correctly. MTD_OOB_PLACE is supposed to read/write the raw oob data similiar to the MTD_OOB_RAW however due to a bug, currently it is not possible to read more data that is specified by the oob 'free' regions. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 7442b3a29b25..cada4cffacf8 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1420,6 +1420,9 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, int ret = 0; uint32_t readlen = ops->len; uint32_t oobreadlen = ops->ooblen; + uint32_t max_oobsize = ops->mode == MTD_OOB_AUTO ? + mtd->oobavail : mtd->oobsize; + uint8_t *bufpoi, *oob, *buf; stats = mtd->ecc_stats; @@ -1470,10 +1473,11 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, buf += bytes; if (unlikely(oob)) { + /* Raw mode does data:oob:data:oob */ if (ops->mode != MTD_OOB_RAW) { int toread = min(oobreadlen, - chip->ecc.layout->oobavail); + max_oobsize); if (toread) { oob = nand_transfer_oob(chip, oob, ops, toread); -- cgit v1.2.3-58-ga151 From 782ce79a45b3b850b108896fcf7da26754061c8f Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:36 +0200 Subject: mtd: nand: cleanup the nand_do_write_ops nand_do_write_ops was broken in regard to writing several pages, each with its own oob. Although nand_do_write_ops intends to allow such mode, it fails do do so Probably this was never tested. Also add missing checks for attempts to write at illegal offsets. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index cada4cffacf8..138674183c1c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2072,11 +2072,9 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, * @oob: oob data buffer * @ops: oob ops structure */ -static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, - struct mtd_oob_ops *ops) +static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, + struct mtd_oob_ops *ops) { - size_t len = ops->ooblen; - switch(ops->mode) { case MTD_OOB_PLACE: @@ -2131,6 +2129,11 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, int chipnr, realpage, page, blockmask, column; struct nand_chip *chip = mtd->priv; uint32_t writelen = ops->len; + + uint32_t oobwritelen = ops->ooblen; + uint32_t oobmaxlen = ops->mode == MTD_OOB_AUTO ? + mtd->oobavail : mtd->oobsize; + uint8_t *oob = ops->oobbuf; uint8_t *buf = ops->datbuf; int ret, subpage; @@ -2172,6 +2175,10 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, if (likely(!oob)) memset(chip->oob_poi, 0xff, mtd->oobsize); + /* Don't allow multipage oob writes with offset */ + if (ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) + return -EINVAL; + while(1) { int bytes = mtd->writesize; int cached = writelen > bytes && page != blockmask; @@ -2187,8 +2194,11 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, wbuf = chip->buffers->databuf; } - if (unlikely(oob)) - oob = nand_fill_oob(chip, oob, ops); + if (unlikely(oob)) { + size_t len = min(oobwritelen, oobmaxlen); + oob = nand_fill_oob(chip, oob, len, ops); + oobwritelen -= len; + } ret = chip->write_page(mtd, chip, wbuf, page, cached, (ops->mode == MTD_OOB_RAW)); @@ -2362,7 +2372,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, chip->pagebuf = -1; memset(chip->oob_poi, 0xff, mtd->oobsize); - nand_fill_oob(chip, ops->oobbuf, ops); + nand_fill_oob(chip, ops->oobbuf, ops->ooblen, ops); status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); memset(chip->oob_poi, 0xff, mtd->oobsize); -- cgit v1.2.3-58-ga151 From b64d39d8b03fea88417d53715ccbebf71d4dcc9f Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:37 +0200 Subject: mtd: nand: make reads using MTD_OOB_RAW affect only ECC validation This changes the behavier of MTD_OOB_RAW. It used to read both OOB and data to the data buffer, however you would still need to specify the dummy oob buffer. This is only used in one place, but makes it hard to read data+oob without ECC test, thus I removed that behavier, and fixed the user. Now MTD_OOB_RAW behaves just like MTD_OOB_PLACE, but doesn't do ECC validation Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 19 +++++++------------ drivers/mtd/nand/nand_bbt.c | 26 ++++++++++++++++++++++---- include/linux/mtd/mtd.h | 4 +--- 3 files changed, 30 insertions(+), 19 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 138674183c1c..51dfea1b3ce6 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1474,18 +1474,13 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, if (unlikely(oob)) { - /* Raw mode does data:oob:data:oob */ - if (ops->mode != MTD_OOB_RAW) { - int toread = min(oobreadlen, - max_oobsize); - if (toread) { - oob = nand_transfer_oob(chip, - oob, ops, toread); - oobreadlen -= toread; - } - } else - buf = nand_transfer_oob(chip, - buf, ops, mtd->oobsize); + int toread = min(oobreadlen, max_oobsize); + + if (toread) { + oob = nand_transfer_oob(chip, + oob, ops, toread); + oobreadlen -= toread; + } } if (!(chip->options & NAND_NO_READRDY)) { diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 55c23e5cd210..387c45c366fe 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -237,15 +237,33 @@ static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, size_t len) { struct mtd_oob_ops ops; + int res; ops.mode = MTD_OOB_RAW; ops.ooboffs = 0; ops.ooblen = mtd->oobsize; - ops.oobbuf = buf; - ops.datbuf = buf; - ops.len = len; - return mtd->read_oob(mtd, offs, &ops); + + while (len > 0) { + if (len <= mtd->writesize) { + ops.oobbuf = buf + len; + ops.datbuf = buf; + ops.len = len; + return mtd->read_oob(mtd, offs, &ops); + } else { + ops.oobbuf = buf + mtd->writesize; + ops.datbuf = buf; + ops.len = mtd->writesize; + res = mtd->read_oob(mtd, offs, &ops); + + if (res) + return res; + } + + buf += mtd->oobsize + mtd->writesize; + len -= mtd->writesize; + } + return 0; } /* diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 11d8e68d17c0..5326435a7571 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -60,9 +60,7 @@ struct mtd_erase_region_info { * MTD_OOB_PLACE: oob data are placed at the given offset * MTD_OOB_AUTO: oob data are automatically placed at the free areas * which are defined by the ecclayout - * MTD_OOB_RAW: mode to read raw data+oob in one chunk. The oob data - * is inserted into the data. Thats a raw image of the - * flash contents. + * MTD_OOB_RAW: mode to read oob and data without doing ECC checking */ typedef enum { MTD_OOB_PLACE, -- cgit v1.2.3-58-ga151 From e0b58d0a7005cd4b9c7fa4694a437a2d86719c13 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:38 +0200 Subject: mtd: nand: add ->badblockbits for minimum number of set bits in bad block byte This can be used to protect against bitflips in that field, but now mostly for smartmedia. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 13 +++++++++---- include/linux/mtd/nand.h | 1 + 2 files changed, 10 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 51dfea1b3ce6..ba29a29bd743 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -364,14 +364,18 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) bad = cpu_to_le16(chip->read_word(mtd)); if (chip->badblockpos & 0x1) bad >>= 8; - if ((bad & 0xFF) != 0xff) - res = 1; + else + bad &= 0xFF; } else { chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, page); - if (chip->read_byte(mtd) != 0xff) - res = 1; + bad = chip->read_byte(mtd); } + if (likely(chip->badblockbits == 8)) + res = bad != 0xFF; + else + res = hweight8(bad) < chip->badblockbits; + if (getchip) nand_release_device(mtd); @@ -2884,6 +2888,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, /* Set the bad block position */ chip->badblockpos = mtd->writesize > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS; + chip->badblockbits = 8; /* Get chip options, preserve non chip based options */ chip->options &= ~NAND_CHIPOPTIONS_MSK; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 48bc2c54302c..f2d4a1ac14b8 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -401,6 +401,7 @@ struct nand_chip { int subpagesize; uint8_t cellinfo; int badblockpos; + int badblockbits; flstate_t state; -- cgit v1.2.3-58-ga151 From 9fc51a37a8da84618df7584cad67c078317f6720 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:39 +0200 Subject: mtd: common module for smartmedia/xD support This small module implements few helpers that are usefull for nand drivers for SmartMedia/xD card readers. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 9 ++++ drivers/mtd/nand/Makefile | 1 + drivers/mtd/nand/sm_common.c | 107 +++++++++++++++++++++++++++++++++++++++++++ drivers/mtd/nand/sm_common.h | 61 ++++++++++++++++++++++++ 4 files changed, 178 insertions(+) create mode 100644 drivers/mtd/nand/sm_common.c create mode 100644 drivers/mtd/nand/sm_common.h (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 8a7ecfab4fe7..5010344f4bb2 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -18,6 +18,10 @@ config MTD_NAND_VERIFY_WRITE device thinks the write was successful, a bit could have been flipped accidentally due to device wear or something else. +config MTD_NAND_SMARTMEDIA + boolean + default n + config MTD_NAND_ECC_SMC bool "NAND ECC Smart Media byte order" default n @@ -25,6 +29,11 @@ config MTD_NAND_ECC_SMC Software ECC according to the Smart Media Specification. The original Linux implementation had byte 0 and 1 swapped. +config MTD_SM_COMMON + select MTD_NAND_SMARTMEDIA + tristate + default n + config MTD_NAND_MUSEUM_IDS bool "Enable chip ids for obsolete ancient NAND devices" depends on MTD_NAND diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 1d19b7ab903a..d9257961a6ee 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_MTD_NAND) += nand.o nand_ecc.o obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o +obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o obj-$(CONFIG_MTD_NAND_SPIA) += spia.o diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c new file mode 100644 index 000000000000..07b6f725723f --- /dev/null +++ b/drivers/mtd/nand/sm_common.c @@ -0,0 +1,107 @@ +/* + * Copyright © 2009 - Maxim Levitsky + * Common routines & support for xD format + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include "sm_common.h" + +static struct nand_ecclayout nand_oob_sm = { + .eccbytes = 6, + .eccpos = {8, 9, 10, 13, 14, 15}, + .oobfree = { + {.offset = 0 , .length = 4}, /* reserved */ + {.offset = 6 , .length = 2}, /* LBA1 */ + {.offset = 11, .length = 2} /* LBA2 */ + } +}; + +/* NOTE: This layout is is not compatabable with SmartMedia, */ +/* because the 256 byte devices have page depenent oob layout */ +/* However it does preserve the bad block markers */ +/* If you use smftl, it will bypass this and work correctly */ +/* If you not, then you break SmartMedia compliance anyway */ + +static struct nand_ecclayout nand_oob_sm_small = { + .eccbytes = 3, + .eccpos = {0, 1, 2}, + .oobfree = { + {.offset = 3 , .length = 2}, /* reserved */ + {.offset = 6 , .length = 2}, /* LBA1 */ + } +}; + + +static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) +{ + struct mtd_oob_ops ops; + struct sm_oob oob; + int ret, error = 0; + + memset(&oob, -1, SM_OOB_SIZE); + oob.block_status = 0x0F; + + /* As long as this function is called on erase block boundaries + it will work correctly for 256 byte nand */ + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = 0; + ops.ooblen = mtd->oobsize; + ops.oobbuf = (void *)&oob; + ops.datbuf = NULL; + + + ret = mtd->write_oob(mtd, ofs, &ops); + if (ret < 0 || ops.oobretlen != SM_OOB_SIZE) { + printk(KERN_NOTICE + "sm_common: can't mark sector at %i as bad\n", + (int)ofs); + error = -EIO; + } else + mtd->ecc_stats.badblocks++; + + return error; +} + + +int sm_register_device(struct mtd_info *mtd) +{ + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + int ret; + + chip->options |= NAND_SKIP_BBTSCAN | NAND_SMARTMEDIA; + + /* Scan for card properties */ + ret = nand_scan_ident(mtd, 1); + + if (ret) + return ret; + + /* Bad block marker postion */ + chip->badblockpos = 0x05; + chip->badblockbits = 7; + chip->block_markbad = sm_block_markbad; + + /* ECC layout */ + if (mtd->writesize == SM_SECTOR_SIZE) + chip->ecc.layout = &nand_oob_sm; + else if (mtd->writesize == SM_SMALL_PAGE) + chip->ecc.layout = &nand_oob_sm_small; + else + return -ENODEV; + + ret = nand_scan_tail(mtd); + + if (ret) + return ret; + + return add_mtd_device(mtd); +} +EXPORT_SYMBOL_GPL(sm_register_device); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Maxim Levitsky "); +MODULE_DESCRIPTION("Common SmartMedia/xD functions"); diff --git a/drivers/mtd/nand/sm_common.h b/drivers/mtd/nand/sm_common.h new file mode 100644 index 000000000000..7c03314bdac5 --- /dev/null +++ b/drivers/mtd/nand/sm_common.h @@ -0,0 +1,61 @@ +/* + * Copyright © 2009 - Maxim Levitsky + * Common routines & support for SmartMedia/xD format + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include + +/* Full oob structure as written on the flash */ +struct sm_oob { + uint32_t reserved; + uint8_t data_status; + uint8_t block_status; + uint8_t lba_copy1[2]; + uint8_t ecc2[3]; + uint8_t lba_copy2[2]; + uint8_t ecc1[3]; +} __attribute__((packed)); + + +/* one sector is always 512 bytes, but it can consist of two nand pages */ +#define SM_SECTOR_SIZE 512 + +/* oob area is also 16 bytes, but might be from two pages */ +#define SM_OOB_SIZE 16 + +/* This is maximum zone size, and all devices that have more that one zone + have this size */ +#define SM_MAX_ZONE_SIZE 1024 + +/* support for small page nand */ +#define SM_SMALL_PAGE 256 +#define SM_SMALL_OOB_SIZE 8 + + +extern int sm_register_device(struct mtd_info *mtd); + + +inline int sm_sector_valid(struct sm_oob *oob) +{ + return hweight16(oob->data_status) >= 5; +} + +inline int sm_block_valid(struct sm_oob *oob) +{ + return hweight16(oob->block_status) >= 7; +} + +inline int sm_block_erased(struct sm_oob *oob) +{ + static const uint32_t erased_pattern[4] = { + 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }; + + /* First test for erased block */ + if (!memcmp(oob, erased_pattern, sizeof(*oob))) + return 1; + return 0; +} -- cgit v1.2.3-58-ga151 From 5e81e88a4c140586d9212999cea683bcd66a15c6 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 26 Feb 2010 18:32:56 +0000 Subject: mtd: nand: Allow caller to pass alternative ID table to nand_scan_ident() Signed-off-by: David Woodhouse --- drivers/mtd/nand/atmel_nand.c | 2 +- drivers/mtd/nand/bcm_umi_nand.c | 2 +- drivers/mtd/nand/cafe_nand.c | 2 +- drivers/mtd/nand/davinci_nand.c | 2 +- drivers/mtd/nand/fsl_elbc_nand.c | 2 +- drivers/mtd/nand/mxc_nand.c | 2 +- drivers/mtd/nand/nand_base.c | 29 +++++++++++++++-------------- drivers/mtd/nand/s3c2410.c | 3 ++- drivers/mtd/nand/sh_flctl.c | 2 +- drivers/mtd/nand/sm_common.c | 2 +- drivers/mtd/nand/socrates_nand.c | 2 +- drivers/mtd/nand/txx9ndfmc.c | 2 +- include/linux/mtd/nand.h | 4 +++- 13 files changed, 30 insertions(+), 26 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 524e6c9e0672..04d30887ca7f 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -474,7 +474,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) } /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1)) { + if (nand_scan_ident(mtd, 1, NULL)) { res = -ENXIO; goto err_scan_ident; } diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index 087bcd745bb7..5ff90b7e565e 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -446,7 +446,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) * layout we'll be using. */ - err = nand_scan_ident(board_mtd, 1); + err = nand_scan_ident(board_mtd, 1, NULL); if (err) { printk(KERN_ERR "nand_scan failed: %d\n", err); iounmap(bcm_umi_io_base); diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 67e2b33f7eff..01a6fe1c7805 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -761,7 +761,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, cafe_readl(cafe, GLOBAL_CTRL), cafe_readl(cafe, GLOBAL_IRQ_MASK)); /* Scan to find existence of the device */ - if (nand_scan_ident(mtd, 2)) { + if (nand_scan_ident(mtd, 2, NULL)) { err = -ENXIO; goto out_irq; } diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index e2eeaf1e51a3..45bb931c0848 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -690,7 +690,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev) spin_unlock_irq(&davinci_nand_lock); /* Scan to find existence of the device(s) */ - ret = nand_scan_ident(&info->mtd, pdata->mask_chipsel ? 2 : 1); + ret = nand_scan_ident(&info->mtd, pdata->mask_chipsel ? 2 : 1, NULL); if (ret < 0) { dev_dbg(&pdev->dev, "no NAND chip(s) found\n"); goto err_scan; diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 1b8328fbb9dc..3f38fb8e6666 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -891,7 +891,7 @@ static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, if (ret) goto err; - ret = nand_scan_ident(&priv->mtd, 1); + ret = nand_scan_ident(&priv->mtd, 1, NULL); if (ret) goto err; diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 06cc378196b5..474a09e53131 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -819,7 +819,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) } /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1)) { + if (nand_scan_ident(mtd, 1, NULL)) { err = -ENXIO; goto escan; } diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ba29a29bd743..1c4823696be2 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2766,10 +2766,10 @@ static void nand_set_defaults(struct nand_chip *chip, int busw) */ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, struct nand_chip *chip, - int busw, int *maf_id) + int busw, int *maf_id, + struct nand_flash_dev *type) { - struct nand_flash_dev *type = NULL; - int i, dev_id, maf_idx; + int dev_id, maf_idx; int tmp_id, tmp_manf; /* Select the device */ @@ -2808,15 +2808,14 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, return ERR_PTR(-ENODEV); } - /* Lookup the flash id */ - for (i = 0; nand_flash_ids[i].name != NULL; i++) { - if (dev_id == nand_flash_ids[i].id) { - type = &nand_flash_ids[i]; - break; - } - } - if (!type) + type = nand_flash_ids; + + for (; type->name != NULL; type++) + if (dev_id == type->id) + break; + + if (!type->name) return ERR_PTR(-ENODEV); if (!mtd->name) @@ -2926,13 +2925,15 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, * nand_scan_ident - [NAND Interface] Scan for the NAND device * @mtd: MTD device structure * @maxchips: Number of chips to scan for + * @table: Alternative NAND ID table * * This is the first phase of the normal nand_scan() function. It * reads the flash ID and sets up MTD fields accordingly. * * The mtd->owner field must be set to the module of the caller. */ -int nand_scan_ident(struct mtd_info *mtd, int maxchips) +int nand_scan_ident(struct mtd_info *mtd, int maxchips, + struct nand_flash_dev *table) { int i, busw, nand_maf_id; struct nand_chip *chip = mtd->priv; @@ -2944,7 +2945,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips) nand_set_defaults(chip, busw); /* Read the flash type */ - type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id); + type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, table); if (IS_ERR(type)) { if (!(chip->options & NAND_SCAN_SILENT_NODEV)) @@ -3235,7 +3236,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips) BUG(); } - ret = nand_scan_ident(mtd, maxchips); + ret = nand_scan_ident(mtd, maxchips, NULL); if (!ret) ret = nand_scan_tail(mtd); return ret; diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index c41ad2285c63..dc02dcd0c08f 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -1013,7 +1013,8 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) s3c2410_nand_init_chip(info, nmtd, sets); nmtd->scan_res = nand_scan_ident(&nmtd->mtd, - (sets) ? sets->nr_chips : 1); + (sets) ? sets->nr_chips : 1, + NULL); if (nmtd->scan_res == 0) { s3c2410_nand_update_chip(info, nmtd); diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index 4260ab78f95c..dbc09a81866e 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -825,7 +825,7 @@ static int __init flctl_probe(struct platform_device *pdev) nand->select_chip = flctl_select_chip; nand->cmdfunc = flctl_cmdfunc; - ret = nand_scan_ident(flctl_mtd, 1); + ret = nand_scan_ident(flctl_mtd, 1, NULL); if (ret) goto err; diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c index 07b6f725723f..f52bb3949275 100644 --- a/drivers/mtd/nand/sm_common.c +++ b/drivers/mtd/nand/sm_common.c @@ -75,7 +75,7 @@ int sm_register_device(struct mtd_info *mtd) chip->options |= NAND_SKIP_BBTSCAN | NAND_SMARTMEDIA; /* Scan for card properties */ - ret = nand_scan_ident(mtd, 1); + ret = nand_scan_ident(mtd, 1, NULL); if (ret) return ret; diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c index 65748ea2b348..b37cbde6e7db 100644 --- a/drivers/mtd/nand/socrates_nand.c +++ b/drivers/mtd/nand/socrates_nand.c @@ -220,7 +220,7 @@ static int __devinit socrates_nand_probe(struct of_device *ofdev, dev_set_drvdata(&ofdev->dev, host); /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1)) { + if (nand_scan_ident(mtd, 1, NULL)) { res = -ENXIO; goto out; } diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c index 863513c3b69a..054a41c0ef4a 100644 --- a/drivers/mtd/nand/txx9ndfmc.c +++ b/drivers/mtd/nand/txx9ndfmc.c @@ -274,7 +274,7 @@ static int txx9ndfmc_nand_scan(struct mtd_info *mtd) struct nand_chip *chip = mtd->priv; int ret; - ret = nand_scan_ident(mtd, 1); + ret = nand_scan_ident(mtd, 1, NULL); if (!ret) { if (mtd->writesize >= 512) { chip->ecc.size = mtd->writesize; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index f2d4a1ac14b8..d152bdf9161f 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -25,11 +25,13 @@ #include struct mtd_info; +struct nand_flash_dev; /* Scan and identify a NAND device */ extern int nand_scan (struct mtd_info *mtd, int max_chips); /* Separate phases of nand_scan(), allowing board driver to intervene * and override command or ECC setup according to flash type */ -extern int nand_scan_ident(struct mtd_info *mtd, int max_chips); +extern int nand_scan_ident(struct mtd_info *mtd, int max_chips, + struct nand_flash_dev *table); extern int nand_scan_tail(struct mtd_info *mtd); /* Free resources held by the NAND device */ -- cgit v1.2.3-58-ga151 From 93edbad69b0491d794c2ec86bcc65c69eac676e3 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:40 +0200 Subject: mtd: Workaround wrong write protect status on some xD cards Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 8 +++++++- include/linux/mtd/nand.h | 6 ++++++ 2 files changed, 13 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 1c4823696be2..b9dc65c7253c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -434,6 +434,11 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) static int nand_check_wp(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; + + /* broken xD cards report WP despite being writable */ + if (chip->options & NAND_BROKEN_XD) + return 0; + /* Check the WP bit */ chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); return (chip->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1; @@ -3175,7 +3180,8 @@ int nand_scan_tail(struct mtd_info *mtd) /* Fill in remaining MTD driver data */ mtd->type = MTD_NANDFLASH; - mtd->flags = MTD_CAP_NANDFLASH; + mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM : + MTD_CAP_NANDFLASH; mtd->erase = nand_erase; mtd->point = NULL; mtd->unpoint = NULL; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index d152bdf9161f..8bdacb885f90 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -182,6 +182,12 @@ typedef enum { /* Chip does not allow subpage writes */ #define NAND_NO_SUBPAGE_WRITE 0x00000200 +/* Device is one of 'new' xD cards that expose fake nand command set */ +#define NAND_BROKEN_XD 0x00000400 + +/* Device behaves just like nand, but is readonly */ +#define NAND_ROM 0x00000800 + /* Options valid for Samsung large page devices */ #define NAND_SAMSUNG_LP_OPTIONS \ (NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK) -- cgit v1.2.3-58-ga151 From 2764fb4244cc1bc08df3667924ca4a972e90ac70 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 26 Feb 2010 18:45:37 +0000 Subject: mtd: nand: Add SmartMedia device table to sm_common module (and remove the CONFIG_MTD_NAND_SMARTMEDIA option which isn't going to be used now that we're doing it this way) Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 5 ----- drivers/mtd/nand/sm_common.c | 40 ++++++++++++++++++++++++++++++++++++++-- 2 files changed, 38 insertions(+), 7 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 5010344f4bb2..c89aaab15712 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -18,10 +18,6 @@ config MTD_NAND_VERIFY_WRITE device thinks the write was successful, a bit could have been flipped accidentally due to device wear or something else. -config MTD_NAND_SMARTMEDIA - boolean - default n - config MTD_NAND_ECC_SMC bool "NAND ECC Smart Media byte order" default n @@ -30,7 +26,6 @@ config MTD_NAND_ECC_SMC The original Linux implementation had byte 0 and 1 swapped. config MTD_SM_COMMON - select MTD_NAND_SMARTMEDIA tristate default n diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c index f52bb3949275..aae0b9acd7ae 100644 --- a/drivers/mtd/nand/sm_common.c +++ b/drivers/mtd/nand/sm_common.c @@ -67,15 +67,51 @@ static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) } +static struct nand_flash_dev nand_smartmedia_flash_ids[] = { + + /* SmartMedia */ + {"SmartMedia 1MiB 5V", 0x6e, 256, 1, 0x1000, 0}, + {"SmartMedia 1MiB 3,3V", 0xe8, 256, 1, 0x1000, 0}, + {"SmartMedia 1MiB 3,3V", 0xec, 256, 1, 0x1000, 0}, + {"SmartMedia 2MiB 3,3V", 0xea, 256, 2, 0x1000, 0}, + {"SmartMedia 2MiB 5V", 0x64, 256, 2, 0x1000, 0}, + {"SmartMedia 2MiB 3,3V ROM", 0x5d, 512, 2, 0x2000, NAND_ROM}, + {"SmartMedia 4MiB 3,3V", 0xe3, 512, 4, 0x2000, 0}, + {"SmartMedia 4MiB 3,3/5V", 0xe5, 512, 4, 0x2000, 0}, + {"SmartMedia 4MiB 5V", 0x6b, 512, 4, 0x2000, 0}, + {"SmartMedia 4MiB 3,3V ROM", 0xd5, 512, 4, 0x2000, NAND_ROM}, + {"SmartMedia 8MiB 3,3V", 0xe6, 512, 8, 0x2000, 0}, + {"SmartMedia 8MiB 3,3V ROM", 0xd6, 512, 8, 0x2000, NAND_ROM}, + +#define XD_TYPEM (NAND_NO_AUTOINCR | NAND_BROKEN_XD) + /* xD / SmartMedia */ + {"SmartMedia/xD 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0}, + {"SmartMedia 16MiB 3,3V ROM", 0x57, 512, 16, 0x4000, NAND_ROM}, + {"SmartMedia/xD 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0}, + {"SmartMedia 32MiB 3,3V ROM", 0x58, 512, 32, 0x4000, NAND_ROM}, + {"SmartMedia/xD 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0}, + {"SmartMedia 64MiB 3,3V ROM", 0xd9, 512, 64, 0x4000, NAND_ROM}, + {"SmartMedia/xD 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0}, + {"SmartMedia 128MiB 3,3V ROM", 0xda, 512, 128, 0x4000, NAND_ROM}, + {"SmartMedia/xD 256MiB 3,3V", 0x71, 512, 256, 0x4000, XD_TYPEM}, + {"SmartMedia 256MiB 3,3V ROM", 0x5b, 512, 256, 0x4000, NAND_ROM}, + + /* xD only */ + {"xD 512MiB 3,3V", 0xDC, 512, 512, 0x4000, XD_TYPEM}, + {"xD 1GiB 3,3V", 0xD3, 512, 1024, 0x4000, XD_TYPEM}, + {"xD 2GiB 3,3V", 0xD5, 512, 2048, 0x4000, XD_TYPEM}, + {NULL,} +}; + int sm_register_device(struct mtd_info *mtd) { struct nand_chip *chip = (struct nand_chip *)mtd->priv; int ret; - chip->options |= NAND_SKIP_BBTSCAN | NAND_SMARTMEDIA; + chip->options |= NAND_SKIP_BBTSCAN; /* Scan for card properties */ - ret = nand_scan_ident(mtd, 1, NULL); + ret = nand_scan_ident(mtd, 1, nand_smartmedia_flash_ids); if (ret) return ret; -- cgit v1.2.3-58-ga151 From 67e054e919248fa1db93de727fb9ad49eb700642 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 22 Feb 2010 20:39:42 +0200 Subject: mtd: nand: Add driver for Ricoh xD/SmartMedia reader This adds a driver for Ricoh R5C852 xD card reader. This reader is a part of larger mulifunction chip and found at least in R5C832 Driver is complete, but bewere of the fact that some (probably only type M) xD cards are 'fake' which means that they have an on board CPU and expose emulated nand command set These cards don't even store the oob area on the flash, but generate it on the fly from something else. Thus they demand to have proper values written in the oob area, and therefore only useful with SmartMedia FTL. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- MAINTAINERS | 6 + drivers/mtd/nand/Kconfig | 11 + drivers/mtd/nand/Makefile | 1 + drivers/mtd/nand/r852.c | 1117 +++++++++++++++++++++++++++++++++++++++++++++ drivers/mtd/nand/r852.h | 163 +++++++ 5 files changed, 1298 insertions(+) create mode 100644 drivers/mtd/nand/r852.c create mode 100644 drivers/mtd/nand/r852.h (limited to 'drivers/mtd/nand') diff --git a/MAINTAINERS b/MAINTAINERS index 2533fc45a44a..ecf4148ec2b3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4567,6 +4567,12 @@ S: Maintained F: Documentation/rfkill.txt F: net/rfkill/ +RICOH SMARTMEDIA/XD DRIVER +M: Maxim Levitsky +S: Maintained +F: drivers/mtd/nand/r822.c +F: drivers/mtd/nand/r822.h + RISCOM8 DRIVER S: Orphan F: Documentation/serial/riscom8.txt diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 7a67218e86fc..6701a00b7a9a 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -102,6 +102,17 @@ config MTD_NAND_OMAP_PREFETCH_DMA config MTD_NAND_IDS tristate +config MTD_NAND_RICOH + tristate "Ricoh xD card reader" + default n + select MTD_SM_COMMON + help + Enable support for Ricoh R5C852 xD card reader + You also need to enable ether + NAND SSFDC (SmartMedia) read only translation layer' or new + expermental, readwrite + 'SmartMedia/xD new translation layer' + config MTD_NAND_AU1550 tristate "Au1550/1200 NAND support" depends on SOC_AU1200 || SOC_AU1550 diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index f39d0b6ed42c..5fbd1f83afb6 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -43,5 +43,6 @@ obj-$(CONFIG_MTD_NAND_NUC900) += nuc900_nand.o obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o obj-$(CONFIG_MTD_NAND_BCM_UMI) += bcm_umi_nand.o nand_bcm_umi.o obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o +obj-$(CONFIG_MTD_NAND_RICOH) += r852.o nand-objs := nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c new file mode 100644 index 000000000000..9307a88e5229 --- /dev/null +++ b/drivers/mtd/nand/r852.c @@ -0,0 +1,1117 @@ +/* + * Copyright © 2009 - Maxim Levitsky + * driver for Ricoh xD readers + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "sm_common.h" +#include "r852.h" + + +static int enable_dma = 1; +module_param(enable_dma, bool, S_IRUGO); +MODULE_PARM_DESC(enable_dma, "Enable usage of the DMA (default)"); + +static int debug; +module_param(debug, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug level (0-2)"); + +/* read register */ +static inline uint8_t r852_read_reg(struct r852_device *dev, int address) +{ + uint8_t reg = readb(dev->mmio + address); + return reg; +} + +/* write register */ +static inline void r852_write_reg(struct r852_device *dev, + int address, uint8_t value) +{ + writeb(value, dev->mmio + address); + mmiowb(); +} + + +/* read dword sized register */ +static inline uint32_t r852_read_reg_dword(struct r852_device *dev, int address) +{ + uint32_t reg = le32_to_cpu(readl(dev->mmio + address)); + return reg; +} + +/* write dword sized register */ +static inline void r852_write_reg_dword(struct r852_device *dev, + int address, uint32_t value) +{ + writel(cpu_to_le32(value), dev->mmio + address); + mmiowb(); +} + +/* returns pointer to our private structure */ +static inline struct r852_device *r852_get_dev(struct mtd_info *mtd) +{ + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + return (struct r852_device *)chip->priv; +} + + +/* check if controller supports dma */ +static void r852_dma_test(struct r852_device *dev) +{ + dev->dma_usable = (r852_read_reg(dev, R852_DMA_CAP) & + (R852_DMA1 | R852_DMA2)) == (R852_DMA1 | R852_DMA2); + + if (!dev->dma_usable) + message("Non dma capable device detected, dma disabled"); + + if (!enable_dma) { + message("disabling dma on user request"); + dev->dma_usable = 0; + } +} + +/* + * Enable dma. Enables ether first or second stage of the DMA, + * Expects dev->dma_dir and dev->dma_state be set + */ +static void r852_dma_enable(struct r852_device *dev) +{ + uint8_t dma_reg, dma_irq_reg; + + /* Set up dma settings */ + dma_reg = r852_read_reg_dword(dev, R852_DMA_SETTINGS); + dma_reg &= ~(R852_DMA_READ | R852_DMA_INTERNAL | R852_DMA_MEMORY); + + if (dev->dma_dir) + dma_reg |= R852_DMA_READ; + + if (dev->dma_state == DMA_INTERNAL) + dma_reg |= R852_DMA_INTERNAL; + else { + dma_reg |= R852_DMA_MEMORY; + r852_write_reg_dword(dev, R852_DMA_ADDR, + cpu_to_le32(dev->phys_dma_addr)); + } + + r852_write_reg_dword(dev, R852_DMA_SETTINGS, dma_reg); + + /* Set dma irq */ + dma_irq_reg = r852_read_reg_dword(dev, R852_DMA_IRQ_ENABLE); + r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE, + dma_irq_reg | + R852_DMA_IRQ_INTERNAL | + R852_DMA_IRQ_ERROR | + R852_DMA_IRQ_MEMORY); +} + +/* + * Disable dma, called from the interrupt handler, which specifies + * success of the operation via 'error' argument + */ +static void r852_dma_done(struct r852_device *dev, int error) +{ + WARN_ON(dev->dma_stage == 0); + + r852_write_reg_dword(dev, R852_DMA_IRQ_STA, + r852_read_reg_dword(dev, R852_DMA_IRQ_STA)); + + r852_write_reg_dword(dev, R852_DMA_SETTINGS, 0); + r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE, 0); + + dev->dma_error = error; + dev->dma_stage = 0; + + if (dev->phys_dma_addr && dev->phys_dma_addr != dev->phys_bounce_buffer) + pci_unmap_single(dev->pci_dev, dev->phys_dma_addr, R852_DMA_LEN, + dev->dma_dir ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE); + complete(&dev->dma_done); +} + +/* + * Wait, till dma is done, which includes both phases of it + */ +static int r852_dma_wait(struct r852_device *dev) +{ + long timeout = wait_for_completion_timeout(&dev->dma_done, + msecs_to_jiffies(1000)); + if (!timeout) { + dbg("timeout waiting for DMA interrupt"); + return -ETIMEDOUT; + } + + return 0; +} + +/* + * Read/Write one page using dma. Only pages can be read (512 bytes) +*/ +static void r852_do_dma(struct r852_device *dev, uint8_t *buf, int do_read) +{ + int bounce = 0; + unsigned long flags; + int error; + + dev->dma_error = 0; + + /* Set dma direction */ + dev->dma_dir = do_read; + dev->dma_stage = 1; + + dbg_verbose("doing dma %s ", do_read ? "read" : "write"); + + /* Set intial dma state: for reading first fill on board buffer, + from device, for writes first fill the buffer from memory*/ + dev->dma_state = do_read ? DMA_INTERNAL : DMA_MEMORY; + + /* if incoming buffer is not page aligned, we should do bounce */ + if ((unsigned long)buf & (R852_DMA_LEN-1)) + bounce = 1; + + if (!bounce) { + dev->phys_dma_addr = pci_map_single(dev->pci_dev, (void *)buf, + R852_DMA_LEN, + (do_read ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE)); + + if (dev->phys_dma_addr == DMA_ERROR_CODE) + bounce = 1; + } + + if (bounce) { + dbg_verbose("dma: using bounce buffer"); + dev->phys_dma_addr = dev->phys_bounce_buffer; + if (!do_read) + memcpy(dev->bounce_buffer, buf, R852_DMA_LEN); + } + + /* Enable DMA */ + spin_lock_irqsave(&dev->irqlock, flags); + r852_dma_enable(dev); + spin_unlock_irqrestore(&dev->irqlock, flags); + + /* Wait till complete */ + error = r852_dma_wait(dev); + + if (error) { + r852_dma_done(dev, error); + return; + } + + if (do_read && bounce) + memcpy((void *)buf, dev->bounce_buffer, R852_DMA_LEN); +} + +/* + * Program data lines of the nand chip to send data to it + */ +void r852_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) +{ + struct r852_device *dev = r852_get_dev(mtd); + uint32_t reg; + + /* Don't allow any access to hardware if we suspect card removal */ + if (dev->card_unstable) + return; + + /* Special case for whole sector read */ + if (len == R852_DMA_LEN && dev->dma_usable) { + r852_do_dma(dev, (uint8_t *)buf, 0); + return; + } + + /* write DWORD chinks - faster */ + while (len) { + reg = buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24; + r852_write_reg_dword(dev, R852_DATALINE, reg); + buf += 4; + len -= 4; + + } + + /* write rest */ + while (len) + r852_write_reg(dev, R852_DATALINE, *buf++); +} + +/* + * Read data lines of the nand chip to retrieve data + */ +void r852_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) +{ + struct r852_device *dev = r852_get_dev(mtd); + uint32_t reg; + + if (dev->card_unstable) { + /* since we can't signal error here, at least, return + predictable buffer */ + memset(buf, 0, len); + return; + } + + /* special case for whole sector read */ + if (len == R852_DMA_LEN && dev->dma_usable) { + r852_do_dma(dev, buf, 1); + return; + } + + /* read in dword sized chunks */ + while (len >= 4) { + + reg = r852_read_reg_dword(dev, R852_DATALINE); + *buf++ = reg & 0xFF; + *buf++ = (reg >> 8) & 0xFF; + *buf++ = (reg >> 16) & 0xFF; + *buf++ = (reg >> 24) & 0xFF; + len -= 4; + } + + /* read the reset by bytes */ + while (len--) + *buf++ = r852_read_reg(dev, R852_DATALINE); +} + +/* + * Read one byte from nand chip + */ +static uint8_t r852_read_byte(struct mtd_info *mtd) +{ + struct r852_device *dev = r852_get_dev(mtd); + + /* Same problem as in r852_read_buf.... */ + if (dev->card_unstable) + return 0; + + return r852_read_reg(dev, R852_DATALINE); +} + + +/* + * Readback the buffer to verify it + */ +int r852_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) +{ + struct r852_device *dev = r852_get_dev(mtd); + + /* We can't be sure about anything here... */ + if (dev->card_unstable) + return -1; + + /* This will never happen, unless you wired up a nand chip + with > 512 bytes page size to the reader */ + if (len > SM_SECTOR_SIZE) + return 0; + + r852_read_buf(mtd, dev->tmp_buffer, len); + return memcmp(buf, dev->tmp_buffer, len); +} + +/* + * Control several chip lines & send commands + */ +void r852_cmdctl(struct mtd_info *mtd, int dat, unsigned int ctrl) +{ + struct r852_device *dev = r852_get_dev(mtd); + + if (dev->card_unstable) + return; + + if (ctrl & NAND_CTRL_CHANGE) { + + dev->ctlreg &= ~(R852_CTL_DATA | R852_CTL_COMMAND | + R852_CTL_ON | R852_CTL_CARDENABLE); + + if (ctrl & NAND_ALE) + dev->ctlreg |= R852_CTL_DATA; + + if (ctrl & NAND_CLE) + dev->ctlreg |= R852_CTL_COMMAND; + + if (ctrl & NAND_NCE) + dev->ctlreg |= (R852_CTL_CARDENABLE | R852_CTL_ON); + else + dev->ctlreg &= ~R852_CTL_WRITE; + + /* when write is stareted, enable write access */ + if (dat == NAND_CMD_ERASE1) + dev->ctlreg |= R852_CTL_WRITE; + + r852_write_reg(dev, R852_CTL, dev->ctlreg); + } + + /* HACK: NAND_CMD_SEQIN is called without NAND_CTRL_CHANGE, but we need + to set write mode */ + if (dat == NAND_CMD_SEQIN && (dev->ctlreg & R852_CTL_COMMAND)) { + dev->ctlreg |= R852_CTL_WRITE; + r852_write_reg(dev, R852_CTL, dev->ctlreg); + } + + if (dat != NAND_CMD_NONE) + r852_write_reg(dev, R852_DATALINE, dat); +} + +/* + * Wait till card is ready. + * based on nand_wait, but returns errors on DMA error + */ +int r852_wait(struct mtd_info *mtd, struct nand_chip *chip) +{ + struct r852_device *dev = (struct r852_device *)chip->priv; + + unsigned long timeout; + int status; + + timeout = jiffies + (chip->state == FL_ERASING ? + msecs_to_jiffies(400) : msecs_to_jiffies(20)); + + while (time_before(jiffies, timeout)) + if (chip->dev_ready(mtd)) + break; + + chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); + status = (int)chip->read_byte(mtd); + + /* Unfortunelly, no way to send detailed error status... */ + if (dev->dma_error) { + status |= NAND_STATUS_FAIL; + dev->dma_error = 0; + } + return status; +} + +/* + * Check if card is ready + */ + +int r852_ready(struct mtd_info *mtd) +{ + struct r852_device *dev = r852_get_dev(mtd); + return !(r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_BUSY); +} + + +/* + * Set ECC engine mode +*/ + +void r852_ecc_hwctl(struct mtd_info *mtd, int mode) +{ + struct r852_device *dev = r852_get_dev(mtd); + + if (dev->card_unstable) + return; + + switch (mode) { + case NAND_ECC_READ: + case NAND_ECC_WRITE: + /* enable ecc generation/check*/ + dev->ctlreg |= R852_CTL_ECC_ENABLE; + + /* flush ecc buffer */ + r852_write_reg(dev, R852_CTL, + dev->ctlreg | R852_CTL_ECC_ACCESS); + + r852_read_reg_dword(dev, R852_DATALINE); + r852_write_reg(dev, R852_CTL, dev->ctlreg); + return; + + case NAND_ECC_READSYN: + /* disable ecc generation */ + dev->ctlreg &= ~R852_CTL_ECC_ENABLE; + r852_write_reg(dev, R852_CTL, dev->ctlreg); + } +} + +/* + * Calculate ECC, only used for writes + */ + +int r852_ecc_calculate(struct mtd_info *mtd, const uint8_t *dat, + uint8_t *ecc_code) +{ + struct r852_device *dev = r852_get_dev(mtd); + struct sm_oob *oob = (struct sm_oob *)ecc_code; + uint32_t ecc1, ecc2; + + if (dev->card_unstable) + return 0; + + dev->ctlreg &= ~R852_CTL_ECC_ENABLE; + r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS); + + ecc1 = r852_read_reg_dword(dev, R852_DATALINE); + ecc2 = r852_read_reg_dword(dev, R852_DATALINE); + + oob->ecc1[0] = (ecc1) & 0xFF; + oob->ecc1[1] = (ecc1 >> 8) & 0xFF; + oob->ecc1[2] = (ecc1 >> 16) & 0xFF; + + oob->ecc2[0] = (ecc2) & 0xFF; + oob->ecc2[1] = (ecc2 >> 8) & 0xFF; + oob->ecc2[2] = (ecc2 >> 16) & 0xFF; + + r852_write_reg(dev, R852_CTL, dev->ctlreg); + return 0; +} + +/* + * Correct the data using ECC, hw did almost everything for us + */ + +int r852_ecc_correct(struct mtd_info *mtd, uint8_t *dat, + uint8_t *read_ecc, uint8_t *calc_ecc) +{ + uint16_t ecc_reg; + uint8_t ecc_status, err_byte; + int i, error = 0; + + struct r852_device *dev = r852_get_dev(mtd); + + if (dev->card_unstable) + return 0; + + r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS); + ecc_reg = r852_read_reg_dword(dev, R852_DATALINE); + r852_write_reg(dev, R852_CTL, dev->ctlreg); + + for (i = 0 ; i <= 1 ; i++) { + + ecc_status = (ecc_reg >> 8) & 0xFF; + + /* ecc uncorrectable error */ + if (ecc_status & R852_ECC_FAIL) { + dbg("ecc: unrecoverable error, in half %d", i); + error = -1; + goto exit; + } + + /* correctable error */ + if (ecc_status & R852_ECC_CORRECTABLE) { + + err_byte = ecc_reg & 0xFF; + dbg("ecc: recoverable error, " + "in half %d, byte %d, bit %d", i, + err_byte, ecc_status & R852_ECC_ERR_BIT_MSK); + + dat[err_byte] ^= + 1 << (ecc_status & R852_ECC_ERR_BIT_MSK); + error++; + } + + dat += 256; + ecc_reg >>= 16; + } +exit: + return error; +} + +/* + * This is copy of nand_read_oob_std + * nand_read_oob_syndrome assumes we can send column address - we can't + */ +static int r852_read_oob(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd) +{ + if (sndcmd) { + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); + sndcmd = 0; + } + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + return sndcmd; +} + +/* + * Start the nand engine + */ + +void r852_engine_enable(struct r852_device *dev) +{ + if (r852_read_reg_dword(dev, R852_HW) & R852_HW_UNKNOWN) { + r852_write_reg(dev, R852_CTL, R852_CTL_RESET | R852_CTL_ON); + r852_write_reg_dword(dev, R852_HW, R852_HW_ENABLED); + } else { + r852_write_reg_dword(dev, R852_HW, R852_HW_ENABLED); + r852_write_reg(dev, R852_CTL, R852_CTL_RESET | R852_CTL_ON); + } + msleep(300); + r852_write_reg(dev, R852_CTL, 0); +} + + +/* + * Stop the nand engine + */ + +void r852_engine_disable(struct r852_device *dev) +{ + r852_write_reg_dword(dev, R852_HW, 0); + r852_write_reg(dev, R852_CTL, R852_CTL_RESET); +} + +/* + * Test if card is present + */ + +void r852_card_update_present(struct r852_device *dev) +{ + unsigned long flags; + uint8_t reg; + + spin_lock_irqsave(&dev->irqlock, flags); + reg = r852_read_reg(dev, R852_CARD_STA); + dev->card_detected = !!(reg & R852_CARD_STA_PRESENT); + spin_unlock_irqrestore(&dev->irqlock, flags); +} + +/* + * Update card detection IRQ state according to current card state + * which is read in r852_card_update_present + */ +void r852_update_card_detect(struct r852_device *dev) +{ + int card_detect_reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE); + + card_detect_reg &= ~(R852_CARD_IRQ_REMOVE | R852_CARD_IRQ_INSERT); + card_detect_reg |= R852_CARD_IRQ_GENABLE; + + card_detect_reg |= dev->card_detected ? + R852_CARD_IRQ_REMOVE : R852_CARD_IRQ_INSERT; + + r852_write_reg(dev, R852_CARD_IRQ_ENABLE, card_detect_reg); +} + +ssize_t r852_media_type_show(struct device *sys_dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = container_of(sys_dev, struct mtd_info, dev); + struct r852_device *dev = r852_get_dev(mtd); + char *data = dev->sm ? "smartmedia" : "xd"; + + strcpy(buf, data); + return strlen(data); +} + +DEVICE_ATTR(media_type, S_IRUGO, r852_media_type_show, NULL); + + +/* Detect properties of card in slot */ +void r852_update_media_status(struct r852_device *dev) +{ + uint8_t reg; + unsigned long flags; + int readonly; + + spin_lock_irqsave(&dev->irqlock, flags); + if (!dev->card_detected) { + message("card removed"); + spin_unlock_irqrestore(&dev->irqlock, flags); + return ; + } + + readonly = r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_RO; + reg = r852_read_reg(dev, R852_DMA_CAP); + dev->sm = (reg & (R852_DMA1 | R852_DMA2)) && (reg & R852_SMBIT); + + message("detected %s %s card in slot", + dev->sm ? "SmartMedia" : "xD", + readonly ? "readonly" : "writeable"); + + dev->readonly = readonly; + spin_unlock_irqrestore(&dev->irqlock, flags); +} + +/* + * Register the nand device + * Called when the card is detected + */ +int r852_register_nand_device(struct r852_device *dev) +{ + dev->mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL); + + if (!dev->mtd) + goto error1; + + WARN_ON(dev->card_registred); + + dev->mtd->owner = THIS_MODULE; + dev->mtd->priv = dev->chip; + dev->mtd->dev.parent = &dev->pci_dev->dev; + + if (dev->readonly) + dev->chip->options |= NAND_ROM; + + r852_engine_enable(dev); + + if (sm_register_device(dev->mtd)) + goto error2; + + device_create_file(&dev->mtd->dev, &dev_attr_media_type); + dev->card_registred = 1; + return 0; +error2: + kfree(dev->mtd); +error1: + /* Force card redetect */ + dev->card_detected = 0; + return -1; +} + +/* + * Unregister the card + */ + +void r852_unregister_nand_device(struct r852_device *dev) +{ + if (!dev->card_registred) + return; + + device_remove_file(&dev->mtd->dev, &dev_attr_media_type); + nand_release(dev->mtd); + r852_engine_disable(dev); + dev->card_registred = 0; + kfree(dev->mtd); + dev->mtd = NULL; +} + +/* Card state updater */ +void r852_card_detect_work(struct work_struct *work) +{ + struct r852_device *dev = + container_of(work, struct r852_device, card_detect_work.work); + + r852_update_card_detect(dev); + dev->card_unstable = 0; + + /* false alarm */ + if (dev->card_detected == dev->card_registred) + goto exit; + + /* Read media properties */ + r852_update_media_status(dev); + + /* Register the card */ + if (dev->card_detected) + r852_register_nand_device(dev); + else + r852_unregister_nand_device(dev); +exit: + /* Update detection logic */ + r852_update_card_detect(dev); +} + +/* Ack + disable IRQ generation */ +static void r852_disable_irqs(struct r852_device *dev) +{ + uint8_t reg; + reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE); + r852_write_reg(dev, R852_CARD_IRQ_ENABLE, reg & ~R852_CARD_IRQ_MASK); + + reg = r852_read_reg_dword(dev, R852_DMA_IRQ_ENABLE); + r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE, + reg & ~R852_DMA_IRQ_MASK); + + r852_write_reg(dev, R852_CARD_IRQ_STA, R852_CARD_IRQ_MASK); + r852_write_reg_dword(dev, R852_DMA_IRQ_STA, R852_DMA_IRQ_MASK); +} + +/* Interrupt handler */ +static irqreturn_t r852_irq(int irq, void *data) +{ + struct r852_device *dev = (struct r852_device *)data; + + uint8_t card_status, dma_status; + unsigned long flags; + irqreturn_t ret = IRQ_NONE; + + spin_lock_irqsave(&dev->irqlock, flags); + + /* We can recieve shared interrupt while pci is suspended + in that case reads will return 0xFFFFFFFF.... */ + if (dev->insuspend) + goto out; + + /* handle card detection interrupts first */ + card_status = r852_read_reg(dev, R852_CARD_IRQ_STA); + r852_write_reg(dev, R852_CARD_IRQ_STA, card_status); + + if (card_status & (R852_CARD_IRQ_INSERT|R852_CARD_IRQ_REMOVE)) { + + ret = IRQ_HANDLED; + dev->card_detected = !!(card_status & R852_CARD_IRQ_INSERT); + + /* we shouldn't recieve any interrupts if we wait for card + to settle */ + WARN_ON(dev->card_unstable); + + /* disable irqs while card is unstable */ + /* this will timeout DMA if active, but better that garbage */ + r852_disable_irqs(dev); + + if (dev->card_unstable) + goto out; + + /* let, card state to settle a bit, and then do the work */ + dev->card_unstable = 1; + queue_delayed_work(dev->card_workqueue, + &dev->card_detect_work, msecs_to_jiffies(100)); + goto out; + } + + + /* Handle dma interrupts */ + dma_status = r852_read_reg_dword(dev, R852_DMA_IRQ_STA); + r852_write_reg_dword(dev, R852_DMA_IRQ_STA, dma_status); + + if (dma_status & R852_DMA_IRQ_MASK) { + + ret = IRQ_HANDLED; + + if (dma_status & R852_DMA_IRQ_ERROR) { + dbg("recieved dma error IRQ"); + r852_dma_done(dev, -EIO); + goto out; + } + + /* recieved DMA interrupt out of nowhere? */ + WARN_ON_ONCE(dev->dma_stage == 0); + + if (dev->dma_stage == 0) + goto out; + + /* done device access */ + if (dev->dma_state == DMA_INTERNAL && + (dma_status & R852_DMA_IRQ_INTERNAL)) { + + dev->dma_state = DMA_MEMORY; + dev->dma_stage++; + } + + /* done memory DMA */ + if (dev->dma_state == DMA_MEMORY && + (dma_status & R852_DMA_IRQ_MEMORY)) { + dev->dma_state = DMA_INTERNAL; + dev->dma_stage++; + } + + /* Enable 2nd half of dma dance */ + if (dev->dma_stage == 2) + r852_dma_enable(dev); + + /* Operation done */ + if (dev->dma_stage == 3) + r852_dma_done(dev, 0); + goto out; + } + + /* Handle unknown interrupts */ + if (dma_status) + dbg("bad dma IRQ status = %x", dma_status); + + if (card_status & ~R852_CARD_STA_CD) + dbg("strange card status = %x", card_status); + +out: + spin_unlock_irqrestore(&dev->irqlock, flags); + return ret; +} + +int r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) +{ + int error; + struct nand_chip *chip; + struct r852_device *dev; + + /* pci initialization */ + error = pci_enable_device(pci_dev); + + if (error) + goto error1; + + pci_set_master(pci_dev); + + error = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK); + if (error) + goto error2; + + error = pci_request_regions(pci_dev, DRV_NAME); + + if (error) + goto error3; + + error = -ENOMEM; + + /* init nand chip, but register it only on card insert */ + chip = kzalloc(sizeof(struct nand_chip), GFP_KERNEL); + + if (!chip) + goto error4; + + /* commands */ + chip->cmd_ctrl = r852_cmdctl; + chip->waitfunc = r852_wait; + chip->dev_ready = r852_ready; + + /* I/O */ + chip->read_byte = r852_read_byte; + chip->read_buf = r852_read_buf; + chip->write_buf = r852_write_buf; + chip->verify_buf = r852_verify_buf; + + /* ecc */ + chip->ecc.mode = NAND_ECC_HW_SYNDROME; + chip->ecc.size = R852_DMA_LEN; + chip->ecc.bytes = SM_OOB_SIZE; + chip->ecc.hwctl = r852_ecc_hwctl; + chip->ecc.calculate = r852_ecc_calculate; + chip->ecc.correct = r852_ecc_correct; + + /* TODO: hack */ + chip->ecc.read_oob = r852_read_oob; + + /* init our device structure */ + dev = kzalloc(sizeof(struct r852_device), GFP_KERNEL); + + if (!dev) + goto error5; + + chip->priv = dev; + dev->chip = chip; + dev->pci_dev = pci_dev; + pci_set_drvdata(pci_dev, dev); + + dev->bounce_buffer = pci_alloc_consistent(pci_dev, R852_DMA_LEN, + &dev->phys_bounce_buffer); + + if (!dev->bounce_buffer) + goto error6; + + + error = -ENODEV; + dev->mmio = pci_ioremap_bar(pci_dev, 0); + + if (!dev->mmio) + goto error7; + + error = -ENOMEM; + dev->tmp_buffer = kzalloc(SM_SECTOR_SIZE, GFP_KERNEL); + + if (!dev->tmp_buffer) + goto error8; + + init_completion(&dev->dma_done); + + dev->card_workqueue = create_freezeable_workqueue(DRV_NAME); + + if (!dev->card_workqueue) + goto error9; + + INIT_DELAYED_WORK(&dev->card_detect_work, r852_card_detect_work); + + /* shutdown everything - precation */ + r852_engine_disable(dev); + r852_disable_irqs(dev); + + r852_dma_test(dev); + + /*register irq handler*/ + error = -ENODEV; + if (request_irq(pci_dev->irq, &r852_irq, IRQF_SHARED, + DRV_NAME, dev)) + goto error10; + + dev->irq = pci_dev->irq; + spin_lock_init(&dev->irqlock); + + /* kick initial present test */ + dev->card_detected = 0; + r852_card_update_present(dev); + queue_delayed_work(dev->card_workqueue, + &dev->card_detect_work, 0); + + + printk(KERN_NOTICE DRV_NAME ": driver loaded succesfully\n"); + return 0; + +error10: + destroy_workqueue(dev->card_workqueue); +error9: + kfree(dev->tmp_buffer); +error8: + pci_iounmap(pci_dev, dev->mmio); +error7: + pci_free_consistent(pci_dev, R852_DMA_LEN, + dev->bounce_buffer, dev->phys_bounce_buffer); +error6: + kfree(dev); +error5: + kfree(chip); +error4: + pci_release_regions(pci_dev); +error3: +error2: + pci_disable_device(pci_dev); +error1: + return error; +} + +void r852_remove(struct pci_dev *pci_dev) +{ + struct r852_device *dev = pci_get_drvdata(pci_dev); + + /* Stop detect workqueue - + we are going to unregister the device anyway*/ + cancel_delayed_work_sync(&dev->card_detect_work); + destroy_workqueue(dev->card_workqueue); + + /* Unregister the device, this might make more IO */ + r852_unregister_nand_device(dev); + + /* Stop interrupts */ + r852_disable_irqs(dev); + synchronize_irq(dev->irq); + free_irq(dev->irq, dev); + + /* Cleanup */ + kfree(dev->tmp_buffer); + pci_iounmap(pci_dev, dev->mmio); + pci_free_consistent(pci_dev, R852_DMA_LEN, + dev->bounce_buffer, dev->phys_bounce_buffer); + + kfree(dev->chip); + kfree(dev); + + /* Shutdown the PCI device */ + pci_release_regions(pci_dev); + pci_disable_device(pci_dev); +} + +void r852_shutdown(struct pci_dev *pci_dev) +{ + struct r852_device *dev = pci_get_drvdata(pci_dev); + + cancel_delayed_work_sync(&dev->card_detect_work); + r852_disable_irqs(dev); + synchronize_irq(dev->irq); + pci_disable_device(pci_dev); +} + +int r852_suspend(struct device *device) +{ + struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); + unsigned long flags; + + if (dev->ctlreg & R852_CTL_CARDENABLE) + return -EBUSY; + + /* First make sure the detect work is gone */ + cancel_delayed_work_sync(&dev->card_detect_work); + + /* Turn off the interrupts and stop the device */ + r852_disable_irqs(dev); + r852_engine_disable(dev); + + spin_lock_irqsave(&dev->irqlock, flags); + dev->insuspend = 1; + spin_unlock_irqrestore(&dev->irqlock, flags); + + /* At that point, even if interrupt handler is running, it will quit */ + /* So wait for this to happen explictly */ + synchronize_irq(dev->irq); + + /* If card was pulled off just during the suspend, which is very + unlikely, we will remove it on resume, it too late now + anyway... */ + dev->card_unstable = 0; + + pci_save_state(to_pci_dev(device)); + return pci_prepare_to_sleep(to_pci_dev(device)); +} + +int r852_resume(struct device *device) +{ + struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); + unsigned long flags; + + /* Turn on the hardware */ + pci_back_from_sleep(to_pci_dev(device)); + pci_restore_state(to_pci_dev(device)); + + r852_disable_irqs(dev); + r852_card_update_present(dev); + r852_engine_disable(dev); + + + /* Now its safe for IRQ to run */ + spin_lock_irqsave(&dev->irqlock, flags); + dev->insuspend = 0; + spin_unlock_irqrestore(&dev->irqlock, flags); + + + /* If card status changed, just do the work */ + if (dev->card_detected != dev->card_registred) { + dbg("card was %s during low power state", + dev->card_detected ? "added" : "removed"); + + queue_delayed_work(dev->card_workqueue, + &dev->card_detect_work, 1000); + return 0; + } + + /* Otherwise, initialize the card */ + if (dev->card_registred) { + r852_engine_enable(dev); + dev->chip->select_chip(dev->mtd, 0); + dev->chip->cmdfunc(dev->mtd, NAND_CMD_RESET, -1, -1); + dev->chip->select_chip(dev->mtd, -1); + } + + /* Program card detection IRQ */ + r852_update_card_detect(dev); + return 0; +} + +static const struct pci_device_id r852_pci_id_tbl[] = { + + { PCI_VDEVICE(RICOH, PCI_DEVICE_ID_RICOH_R5C852), }, + { }, +}; + +MODULE_DEVICE_TABLE(pci, r852_pci_id_tbl); + +SIMPLE_DEV_PM_OPS(r852_pm_ops, r852_suspend, r852_resume); + + +static struct pci_driver r852_pci_driver = { + .name = DRV_NAME, + .id_table = r852_pci_id_tbl, + .probe = r852_probe, + .remove = r852_remove, + .shutdown = r852_shutdown, + .driver.pm = &r852_pm_ops, +}; + +static __init int r852_module_init(void) +{ + return pci_register_driver(&r852_pci_driver); +} + +static void __exit r852_module_exit(void) +{ + pci_unregister_driver(&r852_pci_driver); +} + +module_init(r852_module_init); +module_exit(r852_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Maxim Levitsky "); +MODULE_DESCRIPTION("Ricoh 85xx xD/smartmedia card reader driver"); diff --git a/drivers/mtd/nand/r852.h b/drivers/mtd/nand/r852.h new file mode 100644 index 000000000000..8096cc280c73 --- /dev/null +++ b/drivers/mtd/nand/r852.h @@ -0,0 +1,163 @@ +/* + * Copyright © 2009 - Maxim Levitsky + * driver for Ricoh xD readers + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + + +/* nand interface + ecc + byte write/read does one cycle on nand data lines. + dword write/read does 4 cycles + if R852_CTL_ECC_ACCESS is set in R852_CTL, then dword read reads + results of ecc correction, if DMA read was done before. + If write was done two dword reads read generated ecc checksums +*/ +#define R852_DATALINE 0x00 + +/* control register */ +#define R852_CTL 0x04 +#define R852_CTL_COMMAND 0x01 /* send command (#CLE)*/ +#define R852_CTL_DATA 0x02 /* read/write data (#ALE)*/ +#define R852_CTL_ON 0x04 /* only seem to controls the hd led, */ + /* but has to be set on start...*/ +#define R852_CTL_RESET 0x08 /* unknown, set only on start once*/ +#define R852_CTL_CARDENABLE 0x10 /* probably (#CE) - always set*/ +#define R852_CTL_ECC_ENABLE 0x20 /* enable ecc engine */ +#define R852_CTL_ECC_ACCESS 0x40 /* read/write ecc via reg #0*/ +#define R852_CTL_WRITE 0x80 /* set when performing writes (#WP) */ + +/* card detection status */ +#define R852_CARD_STA 0x05 + +#define R852_CARD_STA_CD 0x01 /* state of #CD line, same as 0x04 */ +#define R852_CARD_STA_RO 0x02 /* card is readonly */ +#define R852_CARD_STA_PRESENT 0x04 /* card is present (#CD) */ +#define R852_CARD_STA_ABSENT 0x08 /* card is absent */ +#define R852_CARD_STA_BUSY 0x80 /* card is busy - (#R/B) */ + +/* card detection irq status & enable*/ +#define R852_CARD_IRQ_STA 0x06 /* IRQ status */ +#define R852_CARD_IRQ_ENABLE 0x07 /* IRQ enable */ + +#define R852_CARD_IRQ_CD 0x01 /* fire when #CD lights, same as 0x04*/ +#define R852_CARD_IRQ_REMOVE 0x04 /* detect card removal */ +#define R852_CARD_IRQ_INSERT 0x08 /* detect card insert */ +#define R852_CARD_IRQ_UNK1 0x10 /* unknown */ +#define R852_CARD_IRQ_GENABLE 0x80 /* general enable */ +#define R852_CARD_IRQ_MASK 0x1D + + + +/* hardware enable */ +#define R852_HW 0x08 +#define R852_HW_ENABLED 0x01 /* hw enabled */ +#define R852_HW_UNKNOWN 0x80 + + +/* dma capabilities */ +#define R852_DMA_CAP 0x09 +#define R852_SMBIT 0x20 /* if set with bit #6 or bit #7, then */ + /* hw is smartmedia */ +#define R852_DMA1 0x40 /* if set w/bit #7, dma is supported */ +#define R852_DMA2 0x80 /* if set w/bit #6, dma is supported */ + + +/* physical DMA address - 32 bit value*/ +#define R852_DMA_ADDR 0x0C + + +/* dma settings */ +#define R852_DMA_SETTINGS 0x10 +#define R852_DMA_MEMORY 0x01 /* (memory <-> internal hw buffer) */ +#define R852_DMA_READ 0x02 /* 0 = write, 1 = read */ +#define R852_DMA_INTERNAL 0x04 /* (internal hw buffer <-> card) */ + +/* dma IRQ status */ +#define R852_DMA_IRQ_STA 0x14 + +/* dma IRQ enable */ +#define R852_DMA_IRQ_ENABLE 0x18 + +#define R852_DMA_IRQ_MEMORY 0x01 /* (memory <-> internal hw buffer) */ +#define R852_DMA_IRQ_ERROR 0x02 /* error did happen */ +#define R852_DMA_IRQ_INTERNAL 0x04 /* (internal hw buffer <-> card) */ +#define R852_DMA_IRQ_MASK 0x07 /* mask of all IRQ bits */ + + +/* ECC syndrome format - read from reg #0 will return two copies of these for + each half of the page. + first byte is error byte location, and second, bit location + flags */ +#define R852_ECC_ERR_BIT_MSK 0x07 /* error bit location */ +#define R852_ECC_CORRECT 0x10 /* no errors - (guessed) */ +#define R852_ECC_CORRECTABLE 0x20 /* correctable error exist */ +#define R852_ECC_FAIL 0x40 /* non correctable error detected */ + +#define R852_DMA_LEN 512 + +#define DMA_INTERNAL 0 +#define DMA_MEMORY 1 + +struct r852_device { + void __iomem *mmio; /* mmio */ + struct mtd_info *mtd; /* mtd backpointer */ + struct nand_chip *chip; /* nand chip backpointer */ + struct pci_dev *pci_dev; /* pci backpointer */ + + /* dma area */ + dma_addr_t phys_dma_addr; /* bus address of buffer*/ + struct completion dma_done; /* data transfer done */ + + dma_addr_t phys_bounce_buffer; /* bus address of bounce buffer */ + uint8_t *bounce_buffer; /* virtual address of bounce buffer */ + + int dma_dir; /* 1 = read, 0 = write */ + int dma_stage; /* 0 - idle, 1 - first step, + 2 - second step */ + + int dma_state; /* 0 = internal, 1 = memory */ + int dma_error; /* dma errors */ + int dma_usable; /* is it possible to use dma */ + + /* card status area */ + struct delayed_work card_detect_work; + struct workqueue_struct *card_workqueue; + int card_registred; /* card registered with mtd */ + int card_detected; /* card detected in slot */ + int card_unstable; /* whenever the card is inserted, + is not known yet */ + int readonly; /* card is readonly */ + int sm; /* Is card smartmedia */ + + /* interrupt handling */ + spinlock_t irqlock; /* IRQ protecting lock */ + int irq; /* irq num */ + int insuspend; /* device is suspended */ + + /* misc */ + void *tmp_buffer; /* temporary buffer */ + uint8_t ctlreg; /* cached contents of control reg */ +}; + +#define DRV_NAME "r852" + + +#define dbg(format, ...) \ + if (debug) \ + printk(KERN_DEBUG DRV_NAME ": " format "\n", ## __VA_ARGS__) + +#define dbg_verbose(format, ...) \ + if (debug > 1) \ + printk(KERN_DEBUG DRV_NAME ": " format "\n", ## __VA_ARGS__) + + +#define message(format, ...) \ + printk(KERN_INFO DRV_NAME ": " format "\n", ## __VA_ARGS__) -- cgit v1.2.3-58-ga151 From 133fa8c7d70d16b07db3a3d87ea18291db8f8ebf Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 26 Feb 2010 22:08:40 +0200 Subject: mtd: Few follow up cleanups for Smartmedia/xD support * Test results of few functions that were declared with __must_check * Fix bogus gcc warning about uinitialized variable 'ret' * Remove unused variable from mtdblock_remove_dev * Don't use deprecated DMA_32BIT_MASK Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 6 ++++-- drivers/mtd/mtdblock.c | 1 - drivers/mtd/nand/r852.c | 6 ++++-- drivers/mtd/sm_ftl.c | 17 ++++++++++------- 4 files changed, 18 insertions(+), 12 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 9dd23d6acbb6..e32c49cb4005 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -380,9 +380,11 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) add_disk(gd); - if (new->disk_attributes) - sysfs_create_group(&disk_to_dev(gd)->kobj, + if (new->disk_attributes) { + ret = sysfs_create_group(&disk_to_dev(gd)->kobj, new->disk_attributes); + WARN_ON(ret); + } return 0; error4: module_put(tr->owner); diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index 7ce30a239ada..e6edbec609fd 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -354,7 +354,6 @@ static void mtdblock_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) static void mtdblock_remove_dev(struct mtd_blktrans_dev *dev) { - struct mtdblk_dev *mtdblk = container_of(dev, struct mtdblk_dev, mbd); del_mtd_blktrans_dev(dev); } diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 9307a88e5229..7a616a926ee9 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -654,7 +654,9 @@ int r852_register_nand_device(struct r852_device *dev) if (sm_register_device(dev->mtd)) goto error2; - device_create_file(&dev->mtd->dev, &dev_attr_media_type); + if (device_create_file(&dev->mtd->dev, &dev_attr_media_type)) + message("can't create media type sysfs attribute"); + dev->card_registred = 1; return 0; error2: @@ -838,7 +840,7 @@ int r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) pci_set_master(pci_dev); - error = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK); + error = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)); if (error) goto error2; diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index a59ebb48cae1..9fb56c76ae89 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -228,7 +228,7 @@ static int sm_read_sector(struct sm_ftl *ftl, struct mtd_info *mtd = ftl->trans->mtd; struct mtd_oob_ops ops; struct sm_oob tmp_oob; - int ret; + int ret = -EIO; int try = 0; /* FTL can contain -1 entries that are by default filled with bits */ @@ -753,6 +753,7 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num) uint16_t block; int lba; int i = 0; + int len; dbg("initializing zone %d", zone_num); @@ -856,7 +857,9 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num) i %= (kfifo_len(&zone->free_sectors) / 2); while (i--) { - kfifo_out(&zone->free_sectors, (unsigned char *)&block, 2); + len = kfifo_out(&zone->free_sectors, + (unsigned char *)&block, 2); + WARN_ON(len != 2); kfifo_in(&zone->free_sectors, (const unsigned char *)&block, 2); } return 0; @@ -947,17 +950,17 @@ restart: if (ftl->unstable) return -EIO; - /* No spare blocks */ - /* We could still continue by erasing the current block, + + /* If there are no spare blocks, */ + /* we could still continue by erasing/writing the current block, but for such worn out media it doesn't worth the trouble, and the dangers */ - - if (!kfifo_len(&zone->free_sectors)) { + if (kfifo_out(&zone->free_sectors, + (unsigned char *)&write_sector, 2) != 2) { dbg("no free sectors for write!"); return -EIO; } - kfifo_out(&zone->free_sectors, (unsigned char *)&write_sector, 2); if (sm_write_block(ftl, ftl->cache_data, zone_num, write_sector, ftl->cache_block, ftl->cache_data_invalid_bitmap)) -- cgit v1.2.3-58-ga151 From d4080cb32ee3d2ed18aa69ffde6010524bd686cd Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 26 Feb 2010 23:10:32 +0200 Subject: mtd: r852 fix pci ID The PCI_DEVICE_ID_RICOH_R5C852 was missed in the edited commit, and on second thought I just open code it. This fixes compile error. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 7a616a926ee9..218a42dadff1 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -1083,7 +1083,7 @@ int r852_resume(struct device *device) static const struct pci_device_id r852_pci_id_tbl[] = { - { PCI_VDEVICE(RICOH, PCI_DEVICE_ID_RICOH_R5C852), }, + { PCI_VDEVICE(RICOH, 0x0852), }, { }, }; -- cgit v1.2.3-58-ga151 From fb45d3232c641bfee5000c8a81e2005903734702 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Sat, 27 Feb 2010 02:04:02 +0200 Subject: mtd: r852: Few fixes for problems that occur when card is rapidly inserted/removed. First don't enable card detection logic to early. Second be very careful with DMA engine, to be sure it doesn't write to kernel memory driver doesn't own. Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 218a42dadff1..cb271167b4a5 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -96,14 +96,21 @@ static void r852_dma_enable(struct r852_device *dev) if (dev->dma_dir) dma_reg |= R852_DMA_READ; - if (dev->dma_state == DMA_INTERNAL) + if (dev->dma_state == DMA_INTERNAL) { dma_reg |= R852_DMA_INTERNAL; - else { + /* Precaution to make sure HW doesn't write */ + /* to random kernel memory */ + r852_write_reg_dword(dev, R852_DMA_ADDR, + cpu_to_le32(dev->phys_bounce_buffer)); + } else { dma_reg |= R852_DMA_MEMORY; r852_write_reg_dword(dev, R852_DMA_ADDR, cpu_to_le32(dev->phys_dma_addr)); } + /* Precaution: make sure write reached the device */ + r852_read_reg_dword(dev, R852_DMA_ADDR); + r852_write_reg_dword(dev, R852_DMA_SETTINGS, dma_reg); /* Set dma irq */ @@ -129,6 +136,11 @@ static void r852_dma_done(struct r852_device *dev, int error) r852_write_reg_dword(dev, R852_DMA_SETTINGS, 0); r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE, 0); + /* Precaution to make sure HW doesn't write to random kernel memory */ + r852_write_reg_dword(dev, R852_DMA_ADDR, + cpu_to_le32(dev->phys_bounce_buffer)); + r852_read_reg_dword(dev, R852_DMA_ADDR); + dev->dma_error = error; dev->dma_stage = 0; @@ -579,6 +591,7 @@ void r852_card_update_present(struct r852_device *dev) void r852_update_card_detect(struct r852_device *dev) { int card_detect_reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE); + dev->card_unstable = 0; card_detect_reg &= ~(R852_CARD_IRQ_REMOVE | R852_CARD_IRQ_INSERT); card_detect_reg |= R852_CARD_IRQ_GENABLE; @@ -690,10 +703,10 @@ void r852_card_detect_work(struct work_struct *work) struct r852_device *dev = container_of(work, struct r852_device, card_detect_work.work); - r852_update_card_detect(dev); + r852_card_update_present(dev); dev->card_unstable = 0; - /* false alarm */ + /* False alarm */ if (dev->card_detected == dev->card_registred) goto exit; -- cgit v1.2.3-58-ga151 From b2aaf7a2b476820cf5fd7738e8641ed88046acf5 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 1 Mar 2010 13:54:19 -0800 Subject: mtd/nand/r852: fix build for CONFIG_PM=n Fix r852 build for the case of CONFIG_PM=n. drivers/mtd/nand/r852.c:1039: error: implicit declaration of function 'pci_prepare_to_sleep' drivers/mtd/nand/r852.c:1048: error: implicit declaration of function 'pci_back_from_sleep' This patch leaves r852_pm_ops untouched. Signed-off-by: Randy Dunlap Acked-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index cb271167b4a5..96db476ce3ed 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -1019,6 +1019,7 @@ void r852_shutdown(struct pci_dev *pci_dev) pci_disable_device(pci_dev); } +#ifdef CONFIG_PM int r852_suspend(struct device *device) { struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); @@ -1093,6 +1094,10 @@ int r852_resume(struct device *device) r852_update_card_detect(dev); return 0; } +#else +#define r852_suspend NULL +#define r852_resume NULL +#endif static const struct pci_device_id r852_pci_id_tbl[] = { -- cgit v1.2.3-58-ga151 From ada496578850cb063ccf64d43a293cfcc9d32bf8 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Mon, 1 Mar 2010 20:21:06 +1100 Subject: mtd: nand: r852: fix name space clash and include delay.h for msleep(). Signed-off-by: Stephen Rothwell Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 96db476ce3ed..f5a0bc7addea 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -13,15 +13,16 @@ #include #include #include +#include #include #include #include "sm_common.h" #include "r852.h" -static int enable_dma = 1; -module_param(enable_dma, bool, S_IRUGO); -MODULE_PARM_DESC(enable_dma, "Enable usage of the DMA (default)"); +static int r852_enable_dma = 1; +module_param(r852_enable_dma, bool, S_IRUGO); +MODULE_PARM_DESC(r852_enable_dma, "Enable usage of the DMA (default)"); static int debug; module_param(debug, int, S_IRUGO | S_IWUSR); @@ -75,7 +76,7 @@ static void r852_dma_test(struct r852_device *dev) if (!dev->dma_usable) message("Non dma capable device detected, dma disabled"); - if (!enable_dma) { + if (!r852_enable_dma) { message("disabling dma on user request"); dev->dma_usable = 0; } -- cgit v1.2.3-58-ga151 From 1f6ca0d6213278f8608c7e342e423ec0c0198040 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Mon, 1 Mar 2010 20:44:57 +1100 Subject: mtd: nand: r852: declare inline functions static Signed-off-by: Stephen Rothwell Signed-off-by: David Woodhouse --- drivers/mtd/nand/sm_common.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/sm_common.h b/drivers/mtd/nand/sm_common.h index 7c03314bdac5..18284f5fae64 100644 --- a/drivers/mtd/nand/sm_common.h +++ b/drivers/mtd/nand/sm_common.h @@ -39,17 +39,17 @@ struct sm_oob { extern int sm_register_device(struct mtd_info *mtd); -inline int sm_sector_valid(struct sm_oob *oob) +static inline int sm_sector_valid(struct sm_oob *oob) { return hweight16(oob->data_status) >= 5; } -inline int sm_block_valid(struct sm_oob *oob) +static inline int sm_block_valid(struct sm_oob *oob) { return hweight16(oob->block_status) >= 7; } -inline int sm_block_erased(struct sm_oob *oob) +static inline int sm_block_erased(struct sm_oob *oob) { static const uint32_t erased_pattern[4] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }; -- cgit v1.2.3-58-ga151 From f696aa43fadb13a21c4e723fb6e51bf640dd1363 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 11 Mar 2010 09:10:32 -0800 Subject: mtd/nand/r852: fix build for CONFIG_PCI disabled r852 fails to build when CONFIG_PCI is not enabled since it uses pci_*() calls and is a PCI driver, so it should depend on PCI to prevent build errors. It should also #include . drivers/mtd/nand/r852.c:1053: error: implicit declaration of function 'pci_prepare_to_sleep' drivers/mtd/nand/r852.c:1062: error: implicit declaration of function 'pci_back_from_sleep' Signed-off-by: Randy Dunlap Cc: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 1 + drivers/mtd/nand/r852.c | 1 + 2 files changed, 2 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 6701a00b7a9a..226206e06230 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -105,6 +105,7 @@ config MTD_NAND_IDS config MTD_NAND_RICOH tristate "Ricoh xD card reader" default n + depends on PCI select MTD_SM_COMMON help Enable support for Ricoh R5C852 xD card reader diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index f5a0bc7addea..06f07bb414a8 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include -- cgit v1.2.3-58-ga151 From 0c82d3ce2f479c728f99e228d9ae32a9cd853c5a Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 11 Mar 2010 09:25:14 -0800 Subject: mtd/nand/r852: Use pci_dma_mapping_error() ... instead of comparing with DMA_ERROR_CODE, which will only work on powerpc/sparc/x86. Reported-by: Geert Uytterhoeven Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 06f07bb414a8..96bfbd8e8fdb 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -197,7 +197,7 @@ static void r852_do_dma(struct r852_device *dev, uint8_t *buf, int do_read) R852_DMA_LEN, (do_read ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE)); - if (dev->phys_dma_addr == DMA_ERROR_CODE) + if (pci_dma_mapping_error(dev->pci_dev, dev->phys_dma_addr)) bounce = 1; } -- cgit v1.2.3-58-ga151 From e5f710cfc6947e64672b7205f7992515868c7782 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 19 Mar 2010 17:22:54 +0200 Subject: mtd: nand: split out ECC module This way drivers could use ecc routines without depedency on whole nand Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/Kconfig | 3 ++- drivers/mtd/nand/Kconfig | 19 ++++++++++++------- drivers/mtd/nand/Makefile | 3 ++- 3 files changed, 16 insertions(+), 9 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index dbee14d37224..e652080bce5d 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -307,8 +307,9 @@ config SSFDC config SM_FTL tristate "SmartMedia/xD new translation layer" - depends on EXPERIMENTAL && BLOCK && MTD_NAND + depends on EXPERIMENTAL && BLOCK select MTD_BLKDEVS + select MTD_NAND_ECC help This enables new and very EXPERMENTAL support for SmartMedia/xD FTL (Flash translation layer). diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 164bd56b9d1a..b712aedd89fb 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -2,11 +2,23 @@ menuconfig MTD_NAND tristate "NAND Device Support" depends on MTD select MTD_NAND_IDS + select MTD_NAND_ECC help This enables support for accessing all type of NAND flash devices. For further information see . +config MTD_NAND_ECC + tristate + +config MTD_NAND_ECC_SMC + bool "NAND ECC Smart Media byte order" + depends on MTD_NAND_ECC + default n + help + Software ECC according to the Smart Media Specification. + The original Linux implementation had byte 0 and 1 swapped. + if MTD_NAND config MTD_NAND_VERIFY_WRITE @@ -18,13 +30,6 @@ config MTD_NAND_VERIFY_WRITE device thinks the write was successful, a bit could have been flipped accidentally due to device wear or something else. -config MTD_NAND_ECC_SMC - bool "NAND ECC Smart Media byte order" - default n - help - Software ECC according to the Smart Media Specification. - The original Linux implementation had byte 0 and 1 swapped. - config MTD_SM_COMMON tristate default n diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 5fbd1f83afb6..04bccf9d7b53 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -2,7 +2,8 @@ # linux/drivers/nand/Makefile # -obj-$(CONFIG_MTD_NAND) += nand.o nand_ecc.o +obj-$(CONFIG_MTD_NAND) += nand.o +obj-$(CONFIG_MTD_NAND_ECC) += nand_ecc.o obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o -- cgit v1.2.3-58-ga151 From a88a2b886404b1cfc109125b1cba4775e8682955 Mon Sep 17 00:00:00 2001 From: Paulius Zaleckas Date: Fri, 23 Apr 2010 13:17:47 -0400 Subject: mtd: fix Orion NAND driver compilation with ARM OABI We must tell GCC to use even register for variable passed to ldrd instruction. Without this patch GCC 4.2.1 puts this variable to r2/r3 on EABI and r3/r4 on OABI, so force it to r2/r3. This does not change anything when EABI and OABI compilation works OK. Without this patch and with OABI I get: CC drivers/mtd/nand/orion_nand.o /tmp/ccMkwOCs.s: Assembler messages: /tmp/ccMkwOCs.s:63: Error: first destination register must be even -- `ldrd r3,[ip]' make[5]: *** [drivers/mtd/nand/orion_nand.o] Error 1 Signed-off-by: Paulius Zaleckas Acked-by: Nicolas Pitre Acked-by: Artem Bityutskiy Cc: David Woodhouse Cc: Jamie Lokier Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/mtd/nand/orion_nand.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index f59c07427af3..d60fc5719fef 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -60,7 +60,13 @@ static void orion_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) } buf64 = (uint64_t *)buf; while (i < len/8) { - uint64_t x; + /* + * Since GCC has no proper constraint (PR 43518) + * force x variable to r2/r3 registers as ldrd instruction + * requires first register to be even. + */ + register uint64_t x asm ("r2"); + asm volatile ("ldrd\t%0, [%1]" : "=&r" (x) : "r" (io_base)); buf64[i++] = x; } -- cgit v1.2.3-58-ga151 From 0bfa4df2b65a94ce761306ab53447010b928b7dd Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Thu, 1 Apr 2010 15:22:50 +0300 Subject: mtd: nandsim: make some structures anonymous We do not need these names. Moreover, there are spelling typos there: "nansin" instead of "nandsim". This patch is just a clean up, no functional changes. Reported-by: Ferenc Wagner Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nandsim.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 8a0a5d16e0eb..261337efe0ee 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -315,7 +315,7 @@ struct nandsim { union ns_mem buf; /* NAND flash "geometry" */ - struct nandsin_geometry { + struct { uint64_t totsz; /* total flash size, bytes */ uint32_t secsz; /* flash sector (erase block) size, bytes */ uint pgsz; /* NAND flash page size, bytes */ @@ -334,7 +334,7 @@ struct nandsim { } geom; /* NAND flash internal registers */ - struct nandsim_regs { + struct { unsigned command; /* the command register */ u_char status; /* the status register */ uint row; /* the page number */ @@ -345,7 +345,7 @@ struct nandsim { } regs; /* NAND flash lines state */ - struct ns_lines_status { + struct { int ce; /* chip Enable */ int cle; /* command Latch Enable */ int ale; /* address Latch Enable */ -- cgit v1.2.3-58-ga151 From dad94318907b5947b499f88f38c074227245d15c Mon Sep 17 00:00:00 2001 From: Ferenc Wagner Date: Sat, 6 Mar 2010 20:09:23 +0100 Subject: mtd: kconfig: remove stray endchoice from help text Signed-off-by: Ferenc Wagner Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index b712aedd89fb..8f402d46a362 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -373,8 +373,6 @@ config MTD_NAND_ATMEL_ECC_NONE If unsure, say N - endchoice - endchoice config MTD_NAND_PXA3xx -- cgit v1.2.3-58-ga151 From ac39ee304ac33f15107e42adb5ee5b0d0ce2dc4a Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 9 Mar 2010 11:05:48 -0500 Subject: mtd: Blackfin NFC: localize MMR bit masks Convert all magic numbers into appropriate defines, and move the defines out of the global namespace and into this one driver. No other driver needs to care about the MMR layout anyways. Signed-off-by: Mike Frysinger Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/bf5xx_nand.c | 29 +++++++++++++++++++++++++---- 1 file changed, 25 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c index 8506e7e606fd..2974995e194d 100644 --- a/drivers/mtd/nand/bf5xx_nand.c +++ b/drivers/mtd/nand/bf5xx_nand.c @@ -68,6 +68,27 @@ #define DRV_AUTHOR "Bryan Wu " #define DRV_DESC "BF5xx on-chip NAND FLash Controller Driver" +/* NFC_STAT Masks */ +#define NBUSY 0x01 /* Not Busy */ +#define WB_FULL 0x02 /* Write Buffer Full */ +#define PG_WR_STAT 0x04 /* Page Write Pending */ +#define PG_RD_STAT 0x08 /* Page Read Pending */ +#define WB_EMPTY 0x10 /* Write Buffer Empty */ + +/* NFC_IRQSTAT Masks */ +#define NBUSYIRQ 0x01 /* Not Busy IRQ */ +#define WB_OVF 0x02 /* Write Buffer Overflow */ +#define WB_EDGE 0x04 /* Write Buffer Edge Detect */ +#define RD_RDY 0x08 /* Read Data Ready */ +#define WR_DONE 0x10 /* Page Write Done */ + +/* NFC_RST Masks */ +#define ECC_RST 0x01 /* ECC (and NFC counters) Reset */ + +/* NFC_PGCTL Masks */ +#define PG_RD_START 0x01 /* Page Read Start */ +#define PG_WR_START 0x02 /* Page Write Start */ + #ifdef CONFIG_MTD_NAND_BF5XX_HWECC static int hardware_ecc = 1; #else @@ -487,7 +508,7 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd, * transferred to generate the correct ECC register * values. */ - bfin_write_NFC_RST(0x1); + bfin_write_NFC_RST(ECC_RST); SSYNC(); disable_dma(CH_NFC); @@ -497,7 +518,7 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd, set_dma_config(CH_NFC, 0x0); set_dma_start_addr(CH_NFC, (unsigned long) buf); -/* The DMAs have different size on BF52x and BF54x */ + /* The DMAs have different size on BF52x and BF54x */ #ifdef CONFIG_BF52x set_dma_x_count(CH_NFC, (page_size >> 1)); set_dma_x_modify(CH_NFC, 2); @@ -517,9 +538,9 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd, /* Start PAGE read/write operation */ if (is_read) - bfin_write_NFC_PGCTL(0x1); + bfin_write_NFC_PGCTL(PG_RD_START); else - bfin_write_NFC_PGCTL(0x2); + bfin_write_NFC_PGCTL(PG_WR_START); wait_for_completion(&info->dma_completion); } -- cgit v1.2.3-58-ga151 From b92b5c41a05b69f56e3d5e92dce3dbb5f5f5cf81 Mon Sep 17 00:00:00 2001 From: Ferenc Wagner Date: Tue, 23 Mar 2010 18:08:16 +0100 Subject: mtd/nand/fsl_upm: Replace the dangerous to_fsl_upm_nand macro The original macro worked only when applied to variables named 'mtd'. While this could have been fixed by simply renaming the macro argument, a more type-safe replacement is preferred. Signed-off-by: Ferenc Wagner Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_upm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index d721ec055cbf..b4e2ba47d7b5 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -48,7 +48,10 @@ struct fsl_upm_nand { uint32_t wait_flags; }; -#define to_fsl_upm_nand(mtd) container_of(mtd, struct fsl_upm_nand, mtd) +static inline struct fsl_upm_nand *to_fsl_upm_nand(struct mtd_info *mtdinfo) +{ + return container_of(mtdinfo, struct fsl_upm_nand, mtd); +} static int fun_chip_ready(struct mtd_info *mtd) { -- cgit v1.2.3-58-ga151 From 1dd2a092af8ed53eb744c5b9993fa775616cf699 Mon Sep 17 00:00:00 2001 From: Huang Weiyi Date: Thu, 8 Apr 2010 19:49:18 +0800 Subject: mtd/nand/bcm_umi: remove unused #include Remove unused #include ('s) in drivers/mtd/nand/bcm_umi_nand.c Signed-off-by: Huang Weiyi Acked-by: Leo Chen Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/bcm_umi_nand.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index 7eb8674c9cf9..a97e6f167c08 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -13,7 +13,6 @@ *****************************************************************************/ /* ---- Include Files ---------------------------------------------------- */ -#include #include #include #include -- cgit v1.2.3-58-ga151 From bff3c10d369440bc87ba612b45ba2777d2bf017f Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Fri, 23 Apr 2010 23:25:44 +0200 Subject: mtd: pxa32xx_nand: add support for partition table parsing The pxa32xx_nand driver doesn't support partition tables from the command line. This patch adds support for it. Signed-off-by: Marc Kleine-Budde Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/pxa3xx_nand.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 1a5a0365c983..55a3d2c05f2a 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1319,6 +1319,17 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) goto fail_free_irq; } + if (mtd_has_cmdlinepart()) { + static const char *probes[] = { "cmdlinepart", NULL }; + struct mtd_partition *parts; + int nr_parts; + + nr_parts = parse_mtd_partitions(mtd, probes, &parts, 0); + + if (nr_parts) + return add_mtd_partitions(mtd, parts, nr_parts); + } + return add_mtd_partitions(mtd, pdata->parts, pdata->nr_parts); fail_free_irq: -- cgit v1.2.3-58-ga151 From 6f1f3d0ab5c3eeea9f04486481c25e9afdfa26c5 Mon Sep 17 00:00:00 2001 From: Steve Deiters Date: Wed, 5 May 2010 13:48:38 -0500 Subject: mtd: mpc5121_nfc: Changed SVR check to allow MPC5123. The revision in SVR for MPC5123 is 3. The NFC is the same as MPC5121 revision 2. Signed-off-by: Steve Deiters Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/mpc5121_nfc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index d7333f4dae86..f713b15fa454 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -666,10 +666,10 @@ static int __devinit mpc5121_nfc_probe(struct of_device *op, /* * Check SoC revision. This driver supports only NFC - * in MPC5121 revision 2. + * in MPC5121 revision 2 and MPC5123 revision 3. */ rev = (mfspr(SPRN_SVR) >> 4) & 0xF; - if (rev != 2) { + if ((rev != 2) && (rev != 3)) { dev_err(dev, "SoC revision %u is not supported!\n", rev); return -ENXIO; } -- cgit v1.2.3-58-ga151 From ce082596ae4308f67f0953a67db508bb085520fa Mon Sep 17 00:00:00 2001 From: Jason Roberts Date: Thu, 13 May 2010 15:57:33 +0100 Subject: mtd/nand: Add Intel Moorestown/Denali NAND support There is more work to be done on this but it is basically working now. Signed-off-by: Jason Roberts Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 17 + drivers/mtd/nand/Makefile | 1 + drivers/mtd/nand/denali.c | 2134 +++++++++++++++++++++++++++++++++++++++++++++ drivers/mtd/nand/denali.h | 816 +++++++++++++++++ 4 files changed, 2968 insertions(+) create mode 100644 drivers/mtd/nand/denali.c create mode 100644 drivers/mtd/nand/denali.h (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 8f402d46a362..98a04b3c9526 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -50,6 +50,23 @@ config MTD_NAND_AUTCPU12 This enables the driver for the autronix autcpu12 board to access the SmartMediaCard. +config MTD_NAND_DENALI + depends on PCI + tristate "Support Denali NAND controller on Intel Moorestown" + help + Enable the driver for NAND flash on Intel Moorestown, using the + Denali NAND controller core. + +config MTD_NAND_DENALI_SCRATCH_REG_ADDR + hex "Denali NAND size scratch register address" + default "0xFF108018" + help + Some platforms place the NAND chip size in a scratch register + because (some versions of) the driver aren't able to automatically + determine the size of certain chips. Set the address of the + scratch register here to enable this feature. On Intel Moorestown + boards, the scratch register is at 0xFF108018. + config MTD_NAND_EDB7312 tristate "Support for Cirrus Logic EBD7312 evaluation board" depends on ARCH_EDB7312 diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 04bccf9d7b53..e8ab884ba47b 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o obj-$(CONFIG_MTD_NAND_SPIA) += spia.o obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o +obj-$(CONFIG_MTD_NAND_DENALI) += denali.o obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c new file mode 100644 index 000000000000..8a6ce0dd9537 --- /dev/null +++ b/drivers/mtd/nand/denali.c @@ -0,0 +1,2134 @@ +/* + * NAND Flash Controller Device Driver + * Copyright © 2009-2010, Intel Corporation and its suppliers. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "denali.h" + +MODULE_LICENSE("GPL"); + +/* We define a module parameter that allows the user to override + * the hardware and decide what timing mode should be used. + */ +#define NAND_DEFAULT_TIMINGS -1 + +static int onfi_timing_mode = NAND_DEFAULT_TIMINGS; +module_param(onfi_timing_mode, int, S_IRUGO); +MODULE_PARM_DESC(onfi_timing_mode, "Overrides default ONFI setting. -1 indicates" + " use default timings"); + +#define DENALI_NAND_NAME "denali-nand" + +/* We define a macro here that combines all interrupts this driver uses into + * a single constant value, for convenience. */ +#define DENALI_IRQ_ALL (INTR_STATUS0__DMA_CMD_COMP | \ + INTR_STATUS0__ECC_TRANSACTION_DONE | \ + INTR_STATUS0__ECC_ERR | \ + INTR_STATUS0__PROGRAM_FAIL | \ + INTR_STATUS0__LOAD_COMP | \ + INTR_STATUS0__PROGRAM_COMP | \ + INTR_STATUS0__TIME_OUT | \ + INTR_STATUS0__ERASE_FAIL | \ + INTR_STATUS0__RST_COMP | \ + INTR_STATUS0__ERASE_COMP) + +/* indicates whether or not the internal value for the flash bank is + valid or not */ +#define CHIP_SELECT_INVALID -1 + +#define SUPPORT_8BITECC 1 + +/* This macro divides two integers and rounds fractional values up + * to the nearest integer value. */ +#define CEIL_DIV(X, Y) (((X)%(Y)) ? ((X)/(Y)+1) : ((X)/(Y))) + +/* this macro allows us to convert from an MTD structure to our own + * device context (denali) structure. + */ +#define mtd_to_denali(m) container_of(m, struct denali_nand_info, mtd) + +/* These constants are defined by the driver to enable common driver + configuration options. */ +#define SPARE_ACCESS 0x41 +#define MAIN_ACCESS 0x42 +#define MAIN_SPARE_ACCESS 0x43 + +#define DENALI_READ 0 +#define DENALI_WRITE 0x100 + +/* types of device accesses. We can issue commands and get status */ +#define COMMAND_CYCLE 0 +#define ADDR_CYCLE 1 +#define STATUS_CYCLE 2 + +/* this is a helper macro that allows us to + * format the bank into the proper bits for the controller */ +#define BANK(x) ((x) << 24) + +/* List of platforms this NAND controller has be integrated into */ +static const struct pci_device_id denali_pci_ids[] = { + { PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 }, + { PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST }, + { /* end: all zeroes */ } +}; + + +/* these are static lookup tables that give us easy access to + registers in the NAND controller. + */ +static const uint32_t intr_status_addresses[4] = {INTR_STATUS0, + INTR_STATUS1, + INTR_STATUS2, + INTR_STATUS3}; + +static const uint32_t device_reset_banks[4] = {DEVICE_RESET__BANK0, + DEVICE_RESET__BANK1, + DEVICE_RESET__BANK2, + DEVICE_RESET__BANK3}; + +static const uint32_t operation_timeout[4] = {INTR_STATUS0__TIME_OUT, + INTR_STATUS1__TIME_OUT, + INTR_STATUS2__TIME_OUT, + INTR_STATUS3__TIME_OUT}; + +static const uint32_t reset_complete[4] = {INTR_STATUS0__RST_COMP, + INTR_STATUS1__RST_COMP, + INTR_STATUS2__RST_COMP, + INTR_STATUS3__RST_COMP}; + +/* specifies the debug level of the driver */ +static int nand_debug_level = 0; + +/* forward declarations */ +static void clear_interrupts(struct denali_nand_info *denali); +static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask); +static void denali_irq_enable(struct denali_nand_info *denali, uint32_t int_mask); +static uint32_t read_interrupt_status(struct denali_nand_info *denali); + +#define DEBUG_DENALI 0 + +/* This is a wrapper for writing to the denali registers. + * this allows us to create debug information so we can + * observe how the driver is programming the device. + * it uses standard linux convention for (val, addr) */ +static void denali_write32(uint32_t value, void *addr) +{ + iowrite32(value, addr); + +#if DEBUG_DENALI + printk(KERN_ERR "wrote: 0x%x -> 0x%x\n", value, (uint32_t)((uint32_t)addr & 0x1fff)); +#endif +} + +/* Certain operations for the denali NAND controller use an indexed mode to read/write + data. The operation is performed by writing the address value of the command to + the device memory followed by the data. This function abstracts this common + operation. +*/ +static void index_addr(struct denali_nand_info *denali, uint32_t address, uint32_t data) +{ + denali_write32(address, denali->flash_mem); + denali_write32(data, denali->flash_mem + 0x10); +} + +/* Perform an indexed read of the device */ +static void index_addr_read_data(struct denali_nand_info *denali, + uint32_t address, uint32_t *pdata) +{ + denali_write32(address, denali->flash_mem); + *pdata = ioread32(denali->flash_mem + 0x10); +} + +/* We need to buffer some data for some of the NAND core routines. + * The operations manage buffering that data. */ +static void reset_buf(struct denali_nand_info *denali) +{ + denali->buf.head = denali->buf.tail = 0; +} + +static void write_byte_to_buf(struct denali_nand_info *denali, uint8_t byte) +{ + BUG_ON(denali->buf.tail >= sizeof(denali->buf.buf)); + denali->buf.buf[denali->buf.tail++] = byte; +} + +/* reads the status of the device */ +static void read_status(struct denali_nand_info *denali) +{ + uint32_t cmd = 0x0; + + /* initialize the data buffer to store status */ + reset_buf(denali); + + /* initiate a device status read */ + cmd = MODE_11 | BANK(denali->flash_bank); + index_addr(denali, cmd | COMMAND_CYCLE, 0x70); + denali_write32(cmd | STATUS_CYCLE, denali->flash_mem); + + /* update buffer with status value */ + write_byte_to_buf(denali, ioread32(denali->flash_mem + 0x10)); + +#if DEBUG_DENALI + printk("device reporting status value of 0x%2x\n", denali->buf.buf[0]); +#endif +} + +/* resets a specific device connected to the core */ +static void reset_bank(struct denali_nand_info *denali) +{ + uint32_t irq_status = 0; + uint32_t irq_mask = reset_complete[denali->flash_bank] | + operation_timeout[denali->flash_bank]; + int bank = 0; + + clear_interrupts(denali); + + bank = device_reset_banks[denali->flash_bank]; + denali_write32(bank, denali->flash_reg + DEVICE_RESET); + + irq_status = wait_for_irq(denali, irq_mask); + + if (irq_status & operation_timeout[denali->flash_bank]) + { + printk(KERN_ERR "reset bank failed.\n"); + } +} + +/* Reset the flash controller */ +static uint16_t NAND_Flash_Reset(struct denali_nand_info *denali) +{ + uint32_t i; + + nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", + __FILE__, __LINE__, __func__); + + for (i = 0 ; i < LLD_MAX_FLASH_BANKS; i++) + denali_write32(reset_complete[i] | operation_timeout[i], + denali->flash_reg + intr_status_addresses[i]); + + for (i = 0 ; i < LLD_MAX_FLASH_BANKS; i++) { + denali_write32(device_reset_banks[i], denali->flash_reg + DEVICE_RESET); + while (!(ioread32(denali->flash_reg + intr_status_addresses[i]) & + (reset_complete[i] | operation_timeout[i]))) + ; + if (ioread32(denali->flash_reg + intr_status_addresses[i]) & + operation_timeout[i]) + nand_dbg_print(NAND_DBG_WARN, + "NAND Reset operation timed out on bank %d\n", i); + } + + for (i = 0; i < LLD_MAX_FLASH_BANKS; i++) + denali_write32(reset_complete[i] | operation_timeout[i], + denali->flash_reg + intr_status_addresses[i]); + + return PASS; +} + +/* this routine calculates the ONFI timing values for a given mode and programs + * the clocking register accordingly. The mode is determined by the get_onfi_nand_para + routine. + */ +static void NAND_ONFi_Timing_Mode(struct denali_nand_info *denali, uint16_t mode) +{ + uint16_t Trea[6] = {40, 30, 25, 20, 20, 16}; + uint16_t Trp[6] = {50, 25, 17, 15, 12, 10}; + uint16_t Treh[6] = {30, 15, 15, 10, 10, 7}; + uint16_t Trc[6] = {100, 50, 35, 30, 25, 20}; + uint16_t Trhoh[6] = {0, 15, 15, 15, 15, 15}; + uint16_t Trloh[6] = {0, 0, 0, 0, 5, 5}; + uint16_t Tcea[6] = {100, 45, 30, 25, 25, 25}; + uint16_t Tadl[6] = {200, 100, 100, 100, 70, 70}; + uint16_t Trhw[6] = {200, 100, 100, 100, 100, 100}; + uint16_t Trhz[6] = {200, 100, 100, 100, 100, 100}; + uint16_t Twhr[6] = {120, 80, 80, 60, 60, 60}; + uint16_t Tcs[6] = {70, 35, 25, 25, 20, 15}; + + uint16_t TclsRising = 1; + uint16_t data_invalid_rhoh, data_invalid_rloh, data_invalid; + uint16_t dv_window = 0; + uint16_t en_lo, en_hi; + uint16_t acc_clks; + uint16_t addr_2_data, re_2_we, re_2_re, we_2_re, cs_cnt; + + nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", + __FILE__, __LINE__, __func__); + + en_lo = CEIL_DIV(Trp[mode], CLK_X); + en_hi = CEIL_DIV(Treh[mode], CLK_X); +#if ONFI_BLOOM_TIME + if ((en_hi * CLK_X) < (Treh[mode] + 2)) + en_hi++; +#endif + + if ((en_lo + en_hi) * CLK_X < Trc[mode]) + en_lo += CEIL_DIV((Trc[mode] - (en_lo + en_hi) * CLK_X), CLK_X); + + if ((en_lo + en_hi) < CLK_MULTI) + en_lo += CLK_MULTI - en_lo - en_hi; + + while (dv_window < 8) { + data_invalid_rhoh = en_lo * CLK_X + Trhoh[mode]; + + data_invalid_rloh = (en_lo + en_hi) * CLK_X + Trloh[mode]; + + data_invalid = + data_invalid_rhoh < + data_invalid_rloh ? data_invalid_rhoh : data_invalid_rloh; + + dv_window = data_invalid - Trea[mode]; + + if (dv_window < 8) + en_lo++; + } + + acc_clks = CEIL_DIV(Trea[mode], CLK_X); + + while (((acc_clks * CLK_X) - Trea[mode]) < 3) + acc_clks++; + + if ((data_invalid - acc_clks * CLK_X) < 2) + nand_dbg_print(NAND_DBG_WARN, "%s, Line %d: Warning!\n", + __FILE__, __LINE__); + + addr_2_data = CEIL_DIV(Tadl[mode], CLK_X); + re_2_we = CEIL_DIV(Trhw[mode], CLK_X); + re_2_re = CEIL_DIV(Trhz[mode], CLK_X); + we_2_re = CEIL_DIV(Twhr[mode], CLK_X); + cs_cnt = CEIL_DIV((Tcs[mode] - Trp[mode]), CLK_X); + if (!TclsRising) + cs_cnt = CEIL_DIV(Tcs[mode], CLK_X); + if (cs_cnt == 0) + cs_cnt = 1; + + if (Tcea[mode]) { + while (((cs_cnt * CLK_X) + Trea[mode]) < Tcea[mode]) + cs_cnt++; + } + +#if MODE5_WORKAROUND + if (mode == 5) + acc_clks = 5; +#endif + + /* Sighting 3462430: Temporary hack for MT29F128G08CJABAWP:B */ + if ((ioread32(denali->flash_reg + MANUFACTURER_ID) == 0) && + (ioread32(denali->flash_reg + DEVICE_ID) == 0x88)) + acc_clks = 6; + + denali_write32(acc_clks, denali->flash_reg + ACC_CLKS); + denali_write32(re_2_we, denali->flash_reg + RE_2_WE); + denali_write32(re_2_re, denali->flash_reg + RE_2_RE); + denali_write32(we_2_re, denali->flash_reg + WE_2_RE); + denali_write32(addr_2_data, denali->flash_reg + ADDR_2_DATA); + denali_write32(en_lo, denali->flash_reg + RDWR_EN_LO_CNT); + denali_write32(en_hi, denali->flash_reg + RDWR_EN_HI_CNT); + denali_write32(cs_cnt, denali->flash_reg + CS_SETUP_CNT); +} + +/* configures the initial ECC settings for the controller */ +static void set_ecc_config(struct denali_nand_info *denali) +{ +#if SUPPORT_8BITECC + if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) < 4096) || + (ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) <= 128)) + denali_write32(8, denali->flash_reg + ECC_CORRECTION); +#endif + + if ((ioread32(denali->flash_reg + ECC_CORRECTION) & ECC_CORRECTION__VALUE) + == 1) { + denali->dev_info.wECCBytesPerSector = 4; + denali->dev_info.wECCBytesPerSector *= denali->dev_info.wDevicesConnected; + denali->dev_info.wNumPageSpareFlag = + denali->dev_info.wPageSpareSize - + denali->dev_info.wPageDataSize / + (ECC_SECTOR_SIZE * denali->dev_info.wDevicesConnected) * + denali->dev_info.wECCBytesPerSector + - denali->dev_info.wSpareSkipBytes; + } else { + denali->dev_info.wECCBytesPerSector = + (ioread32(denali->flash_reg + ECC_CORRECTION) & + ECC_CORRECTION__VALUE) * 13 / 8; + if ((denali->dev_info.wECCBytesPerSector) % 2 == 0) + denali->dev_info.wECCBytesPerSector += 2; + else + denali->dev_info.wECCBytesPerSector += 1; + + denali->dev_info.wECCBytesPerSector *= denali->dev_info.wDevicesConnected; + denali->dev_info.wNumPageSpareFlag = denali->dev_info.wPageSpareSize - + denali->dev_info.wPageDataSize / + (ECC_SECTOR_SIZE * denali->dev_info.wDevicesConnected) * + denali->dev_info.wECCBytesPerSector + - denali->dev_info.wSpareSkipBytes; + } +} + +/* queries the NAND device to see what ONFI modes it supports. */ +static uint16_t get_onfi_nand_para(struct denali_nand_info *denali) +{ + int i; + uint16_t blks_lun_l, blks_lun_h, n_of_luns; + uint32_t blockperlun, id; + + denali_write32(DEVICE_RESET__BANK0, denali->flash_reg + DEVICE_RESET); + + while (!((ioread32(denali->flash_reg + INTR_STATUS0) & + INTR_STATUS0__RST_COMP) | + (ioread32(denali->flash_reg + INTR_STATUS0) & + INTR_STATUS0__TIME_OUT))) + ; + + if (ioread32(denali->flash_reg + INTR_STATUS0) & INTR_STATUS0__RST_COMP) { + denali_write32(DEVICE_RESET__BANK1, denali->flash_reg + DEVICE_RESET); + while (!((ioread32(denali->flash_reg + INTR_STATUS1) & + INTR_STATUS1__RST_COMP) | + (ioread32(denali->flash_reg + INTR_STATUS1) & + INTR_STATUS1__TIME_OUT))) + ; + + if (ioread32(denali->flash_reg + INTR_STATUS1) & + INTR_STATUS1__RST_COMP) { + denali_write32(DEVICE_RESET__BANK2, + denali->flash_reg + DEVICE_RESET); + while (!((ioread32(denali->flash_reg + INTR_STATUS2) & + INTR_STATUS2__RST_COMP) | + (ioread32(denali->flash_reg + INTR_STATUS2) & + INTR_STATUS2__TIME_OUT))) + ; + + if (ioread32(denali->flash_reg + INTR_STATUS2) & + INTR_STATUS2__RST_COMP) { + denali_write32(DEVICE_RESET__BANK3, + denali->flash_reg + DEVICE_RESET); + while (!((ioread32(denali->flash_reg + INTR_STATUS3) & + INTR_STATUS3__RST_COMP) | + (ioread32(denali->flash_reg + INTR_STATUS3) & + INTR_STATUS3__TIME_OUT))) + ; + } else { + printk(KERN_ERR "Getting a time out for bank 2!\n"); + } + } else { + printk(KERN_ERR "Getting a time out for bank 1!\n"); + } + } + + denali_write32(INTR_STATUS0__TIME_OUT, denali->flash_reg + INTR_STATUS0); + denali_write32(INTR_STATUS1__TIME_OUT, denali->flash_reg + INTR_STATUS1); + denali_write32(INTR_STATUS2__TIME_OUT, denali->flash_reg + INTR_STATUS2); + denali_write32(INTR_STATUS3__TIME_OUT, denali->flash_reg + INTR_STATUS3); + + denali->dev_info.wONFIDevFeatures = + ioread32(denali->flash_reg + ONFI_DEVICE_FEATURES); + denali->dev_info.wONFIOptCommands = + ioread32(denali->flash_reg + ONFI_OPTIONAL_COMMANDS); + denali->dev_info.wONFITimingMode = + ioread32(denali->flash_reg + ONFI_TIMING_MODE); + denali->dev_info.wONFIPgmCacheTimingMode = + ioread32(denali->flash_reg + ONFI_PGM_CACHE_TIMING_MODE); + + n_of_luns = ioread32(denali->flash_reg + ONFI_DEVICE_NO_OF_LUNS) & + ONFI_DEVICE_NO_OF_LUNS__NO_OF_LUNS; + blks_lun_l = ioread32(denali->flash_reg + ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_L); + blks_lun_h = ioread32(denali->flash_reg + ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_U); + + blockperlun = (blks_lun_h << 16) | blks_lun_l; + + denali->dev_info.wTotalBlocks = n_of_luns * blockperlun; + + if (!(ioread32(denali->flash_reg + ONFI_TIMING_MODE) & + ONFI_TIMING_MODE__VALUE)) + return FAIL; + + for (i = 5; i > 0; i--) { + if (ioread32(denali->flash_reg + ONFI_TIMING_MODE) & (0x01 << i)) + break; + } + + NAND_ONFi_Timing_Mode(denali, i); + + index_addr(denali, MODE_11 | 0, 0x90); + index_addr(denali, MODE_11 | 1, 0); + + for (i = 0; i < 3; i++) + index_addr_read_data(denali, MODE_11 | 2, &id); + + nand_dbg_print(NAND_DBG_DEBUG, "3rd ID: 0x%x\n", id); + + denali->dev_info.MLCDevice = id & 0x0C; + + /* By now, all the ONFI devices we know support the page cache */ + /* rw feature. So here we enable the pipeline_rw_ahead feature */ + /* iowrite32(1, denali->flash_reg + CACHE_WRITE_ENABLE); */ + /* iowrite32(1, denali->flash_reg + CACHE_READ_ENABLE); */ + + return PASS; +} + +static void get_samsung_nand_para(struct denali_nand_info *denali) +{ + uint8_t no_of_planes; + uint32_t blk_size; + uint64_t plane_size, capacity; + uint32_t id_bytes[5]; + int i; + + index_addr(denali, (uint32_t)(MODE_11 | 0), 0x90); + index_addr(denali, (uint32_t)(MODE_11 | 1), 0); + for (i = 0; i < 5; i++) + index_addr_read_data(denali, (uint32_t)(MODE_11 | 2), &id_bytes[i]); + + nand_dbg_print(NAND_DBG_DEBUG, + "ID bytes: 0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n", + id_bytes[0], id_bytes[1], id_bytes[2], + id_bytes[3], id_bytes[4]); + + if ((id_bytes[1] & 0xff) == 0xd3) { /* Samsung K9WAG08U1A */ + /* Set timing register values according to datasheet */ + denali_write32(5, denali->flash_reg + ACC_CLKS); + denali_write32(20, denali->flash_reg + RE_2_WE); + denali_write32(12, denali->flash_reg + WE_2_RE); + denali_write32(14, denali->flash_reg + ADDR_2_DATA); + denali_write32(3, denali->flash_reg + RDWR_EN_LO_CNT); + denali_write32(2, denali->flash_reg + RDWR_EN_HI_CNT); + denali_write32(2, denali->flash_reg + CS_SETUP_CNT); + } + + no_of_planes = 1 << ((id_bytes[4] & 0x0c) >> 2); + plane_size = (uint64_t)64 << ((id_bytes[4] & 0x70) >> 4); + blk_size = 64 << ((ioread32(denali->flash_reg + DEVICE_PARAM_1) & 0x30) >> 4); + capacity = (uint64_t)128 * plane_size * no_of_planes; + + do_div(capacity, blk_size); + denali->dev_info.wTotalBlocks = capacity; +} + +static void get_toshiba_nand_para(struct denali_nand_info *denali) +{ + void __iomem *scratch_reg; + uint32_t tmp; + + /* Workaround to fix a controller bug which reports a wrong */ + /* spare area size for some kind of Toshiba NAND device */ + if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) == 4096) && + (ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) == 64)) { + denali_write32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + tmp = ioread32(denali->flash_reg + DEVICES_CONNECTED) * + ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + denali_write32(tmp, denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE); +#if SUPPORT_15BITECC + denali_write32(15, denali->flash_reg + ECC_CORRECTION); +#elif SUPPORT_8BITECC + denali_write32(8, denali->flash_reg + ECC_CORRECTION); +#endif + } + + /* As Toshiba NAND can not provide it's block number, */ + /* so here we need user to provide the correct block */ + /* number in a scratch register before the Linux NAND */ + /* driver is loaded. If no valid value found in the scratch */ + /* register, then we use default block number value */ + scratch_reg = ioremap_nocache(SCRATCH_REG_ADDR, SCRATCH_REG_SIZE); + if (!scratch_reg) { + printk(KERN_ERR "Spectra: ioremap failed in %s, Line %d", + __FILE__, __LINE__); + denali->dev_info.wTotalBlocks = GLOB_HWCTL_DEFAULT_BLKS; + } else { + nand_dbg_print(NAND_DBG_WARN, + "Spectra: ioremap reg address: 0x%p\n", scratch_reg); + denali->dev_info.wTotalBlocks = 1 << ioread8(scratch_reg); + if (denali->dev_info.wTotalBlocks < 512) + denali->dev_info.wTotalBlocks = GLOB_HWCTL_DEFAULT_BLKS; + iounmap(scratch_reg); + } +} + +static void get_hynix_nand_para(struct denali_nand_info *denali) +{ + void __iomem *scratch_reg; + uint32_t main_size, spare_size; + + switch (denali->dev_info.wDeviceID) { + case 0xD5: /* Hynix H27UAG8T2A, H27UBG8U5A or H27UCG8VFA */ + case 0xD7: /* Hynix H27UDG8VEM, H27UCG8UDM or H27UCG8V5A */ + denali_write32(128, denali->flash_reg + PAGES_PER_BLOCK); + denali_write32(4096, denali->flash_reg + DEVICE_MAIN_AREA_SIZE); + denali_write32(224, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + main_size = 4096 * ioread32(denali->flash_reg + DEVICES_CONNECTED); + spare_size = 224 * ioread32(denali->flash_reg + DEVICES_CONNECTED); + denali_write32(main_size, denali->flash_reg + LOGICAL_PAGE_DATA_SIZE); + denali_write32(spare_size, denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE); + denali_write32(0, denali->flash_reg + DEVICE_WIDTH); +#if SUPPORT_15BITECC + denali_write32(15, denali->flash_reg + ECC_CORRECTION); +#elif SUPPORT_8BITECC + denali_write32(8, denali->flash_reg + ECC_CORRECTION); +#endif + denali->dev_info.MLCDevice = 1; + break; + default: + nand_dbg_print(NAND_DBG_WARN, + "Spectra: Unknown Hynix NAND (Device ID: 0x%x)." + "Will use default parameter values instead.\n", + denali->dev_info.wDeviceID); + } + + scratch_reg = ioremap_nocache(SCRATCH_REG_ADDR, SCRATCH_REG_SIZE); + if (!scratch_reg) { + printk(KERN_ERR "Spectra: ioremap failed in %s, Line %d", + __FILE__, __LINE__); + denali->dev_info.wTotalBlocks = GLOB_HWCTL_DEFAULT_BLKS; + } else { + nand_dbg_print(NAND_DBG_WARN, + "Spectra: ioremap reg address: 0x%p\n", scratch_reg); + denali->dev_info.wTotalBlocks = 1 << ioread8(scratch_reg); + if (denali->dev_info.wTotalBlocks < 512) + denali->dev_info.wTotalBlocks = GLOB_HWCTL_DEFAULT_BLKS; + iounmap(scratch_reg); + } +} + +/* determines how many NAND chips are connected to the controller. Note for + Intel CE4100 devices we don't support more than one device. + */ +static void find_valid_banks(struct denali_nand_info *denali) +{ + uint32_t id[LLD_MAX_FLASH_BANKS]; + int i; + + denali->total_used_banks = 1; + for (i = 0; i < LLD_MAX_FLASH_BANKS; i++) { + index_addr(denali, (uint32_t)(MODE_11 | (i << 24) | 0), 0x90); + index_addr(denali, (uint32_t)(MODE_11 | (i << 24) | 1), 0); + index_addr_read_data(denali, (uint32_t)(MODE_11 | (i << 24) | 2), &id[i]); + + nand_dbg_print(NAND_DBG_DEBUG, + "Return 1st ID for bank[%d]: %x\n", i, id[i]); + + if (i == 0) { + if (!(id[i] & 0x0ff)) + break; /* WTF? */ + } else { + if ((id[i] & 0x0ff) == (id[0] & 0x0ff)) + denali->total_used_banks++; + else + break; + } + } + + if (denali->platform == INTEL_CE4100) + { + /* Platform limitations of the CE4100 device limit + * users to a single chip solution for NAND. + * Multichip support is not enabled. + */ + if (denali->total_used_banks != 1) + { + printk(KERN_ERR "Sorry, Intel CE4100 only supports " + "a single NAND device.\n"); + BUG(); + } + } + nand_dbg_print(NAND_DBG_DEBUG, + "denali->total_used_banks: %d\n", denali->total_used_banks); +} + +static void detect_partition_feature(struct denali_nand_info *denali) +{ + if (ioread32(denali->flash_reg + FEATURES) & FEATURES__PARTITION) { + if ((ioread32(denali->flash_reg + PERM_SRC_ID_1) & + PERM_SRC_ID_1__SRCID) == SPECTRA_PARTITION_ID) { + denali->dev_info.wSpectraStartBlock = + ((ioread32(denali->flash_reg + MIN_MAX_BANK_1) & + MIN_MAX_BANK_1__MIN_VALUE) * + denali->dev_info.wTotalBlocks) + + + (ioread32(denali->flash_reg + MIN_BLK_ADDR_1) & + MIN_BLK_ADDR_1__VALUE); + + denali->dev_info.wSpectraEndBlock = + (((ioread32(denali->flash_reg + MIN_MAX_BANK_1) & + MIN_MAX_BANK_1__MAX_VALUE) >> 2) * + denali->dev_info.wTotalBlocks) + + + (ioread32(denali->flash_reg + MAX_BLK_ADDR_1) & + MAX_BLK_ADDR_1__VALUE); + + denali->dev_info.wTotalBlocks *= denali->total_used_banks; + + if (denali->dev_info.wSpectraEndBlock >= + denali->dev_info.wTotalBlocks) { + denali->dev_info.wSpectraEndBlock = + denali->dev_info.wTotalBlocks - 1; + } + + denali->dev_info.wDataBlockNum = + denali->dev_info.wSpectraEndBlock - + denali->dev_info.wSpectraStartBlock + 1; + } else { + denali->dev_info.wTotalBlocks *= denali->total_used_banks; + denali->dev_info.wSpectraStartBlock = SPECTRA_START_BLOCK; + denali->dev_info.wSpectraEndBlock = + denali->dev_info.wTotalBlocks - 1; + denali->dev_info.wDataBlockNum = + denali->dev_info.wSpectraEndBlock - + denali->dev_info.wSpectraStartBlock + 1; + } + } else { + denali->dev_info.wTotalBlocks *= denali->total_used_banks; + denali->dev_info.wSpectraStartBlock = SPECTRA_START_BLOCK; + denali->dev_info.wSpectraEndBlock = denali->dev_info.wTotalBlocks - 1; + denali->dev_info.wDataBlockNum = + denali->dev_info.wSpectraEndBlock - + denali->dev_info.wSpectraStartBlock + 1; + } +} + +static void dump_device_info(struct denali_nand_info *denali) +{ + nand_dbg_print(NAND_DBG_DEBUG, "denali->dev_info:\n"); + nand_dbg_print(NAND_DBG_DEBUG, "DeviceMaker: 0x%x\n", + denali->dev_info.wDeviceMaker); + nand_dbg_print(NAND_DBG_DEBUG, "DeviceID: 0x%x\n", + denali->dev_info.wDeviceID); + nand_dbg_print(NAND_DBG_DEBUG, "DeviceType: 0x%x\n", + denali->dev_info.wDeviceType); + nand_dbg_print(NAND_DBG_DEBUG, "SpectraStartBlock: %d\n", + denali->dev_info.wSpectraStartBlock); + nand_dbg_print(NAND_DBG_DEBUG, "SpectraEndBlock: %d\n", + denali->dev_info.wSpectraEndBlock); + nand_dbg_print(NAND_DBG_DEBUG, "TotalBlocks: %d\n", + denali->dev_info.wTotalBlocks); + nand_dbg_print(NAND_DBG_DEBUG, "PagesPerBlock: %d\n", + denali->dev_info.wPagesPerBlock); + nand_dbg_print(NAND_DBG_DEBUG, "PageSize: %d\n", + denali->dev_info.wPageSize); + nand_dbg_print(NAND_DBG_DEBUG, "PageDataSize: %d\n", + denali->dev_info.wPageDataSize); + nand_dbg_print(NAND_DBG_DEBUG, "PageSpareSize: %d\n", + denali->dev_info.wPageSpareSize); + nand_dbg_print(NAND_DBG_DEBUG, "NumPageSpareFlag: %d\n", + denali->dev_info.wNumPageSpareFlag); + nand_dbg_print(NAND_DBG_DEBUG, "ECCBytesPerSector: %d\n", + denali->dev_info.wECCBytesPerSector); + nand_dbg_print(NAND_DBG_DEBUG, "BlockSize: %d\n", + denali->dev_info.wBlockSize); + nand_dbg_print(NAND_DBG_DEBUG, "BlockDataSize: %d\n", + denali->dev_info.wBlockDataSize); + nand_dbg_print(NAND_DBG_DEBUG, "DataBlockNum: %d\n", + denali->dev_info.wDataBlockNum); + nand_dbg_print(NAND_DBG_DEBUG, "PlaneNum: %d\n", + denali->dev_info.bPlaneNum); + nand_dbg_print(NAND_DBG_DEBUG, "DeviceMainAreaSize: %d\n", + denali->dev_info.wDeviceMainAreaSize); + nand_dbg_print(NAND_DBG_DEBUG, "DeviceSpareAreaSize: %d\n", + denali->dev_info.wDeviceSpareAreaSize); + nand_dbg_print(NAND_DBG_DEBUG, "DevicesConnected: %d\n", + denali->dev_info.wDevicesConnected); + nand_dbg_print(NAND_DBG_DEBUG, "DeviceWidth: %d\n", + denali->dev_info.wDeviceWidth); + nand_dbg_print(NAND_DBG_DEBUG, "HWRevision: 0x%x\n", + denali->dev_info.wHWRevision); + nand_dbg_print(NAND_DBG_DEBUG, "HWFeatures: 0x%x\n", + denali->dev_info.wHWFeatures); + nand_dbg_print(NAND_DBG_DEBUG, "ONFIDevFeatures: 0x%x\n", + denali->dev_info.wONFIDevFeatures); + nand_dbg_print(NAND_DBG_DEBUG, "ONFIOptCommands: 0x%x\n", + denali->dev_info.wONFIOptCommands); + nand_dbg_print(NAND_DBG_DEBUG, "ONFITimingMode: 0x%x\n", + denali->dev_info.wONFITimingMode); + nand_dbg_print(NAND_DBG_DEBUG, "ONFIPgmCacheTimingMode: 0x%x\n", + denali->dev_info.wONFIPgmCacheTimingMode); + nand_dbg_print(NAND_DBG_DEBUG, "MLCDevice: %s\n", + denali->dev_info.MLCDevice ? "Yes" : "No"); + nand_dbg_print(NAND_DBG_DEBUG, "SpareSkipBytes: %d\n", + denali->dev_info.wSpareSkipBytes); + nand_dbg_print(NAND_DBG_DEBUG, "BitsInPageNumber: %d\n", + denali->dev_info.nBitsInPageNumber); + nand_dbg_print(NAND_DBG_DEBUG, "BitsInPageDataSize: %d\n", + denali->dev_info.nBitsInPageDataSize); + nand_dbg_print(NAND_DBG_DEBUG, "BitsInBlockDataSize: %d\n", + denali->dev_info.nBitsInBlockDataSize); +} + +static uint16_t NAND_Read_Device_ID(struct denali_nand_info *denali) +{ + uint16_t status = PASS; + uint8_t no_of_planes; + + nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", + __FILE__, __LINE__, __func__); + + denali->dev_info.wDeviceMaker = ioread32(denali->flash_reg + MANUFACTURER_ID); + denali->dev_info.wDeviceID = ioread32(denali->flash_reg + DEVICE_ID); + denali->dev_info.bDeviceParam0 = ioread32(denali->flash_reg + DEVICE_PARAM_0); + denali->dev_info.bDeviceParam1 = ioread32(denali->flash_reg + DEVICE_PARAM_1); + denali->dev_info.bDeviceParam2 = ioread32(denali->flash_reg + DEVICE_PARAM_2); + + denali->dev_info.MLCDevice = ioread32(denali->flash_reg + DEVICE_PARAM_0) & 0x0c; + + if (ioread32(denali->flash_reg + ONFI_DEVICE_NO_OF_LUNS) & + ONFI_DEVICE_NO_OF_LUNS__ONFI_DEVICE) { /* ONFI 1.0 NAND */ + if (FAIL == get_onfi_nand_para(denali)) + return FAIL; + } else if (denali->dev_info.wDeviceMaker == 0xEC) { /* Samsung NAND */ + get_samsung_nand_para(denali); + } else if (denali->dev_info.wDeviceMaker == 0x98) { /* Toshiba NAND */ + get_toshiba_nand_para(denali); + } else if (denali->dev_info.wDeviceMaker == 0xAD) { /* Hynix NAND */ + get_hynix_nand_para(denali); + } else { + denali->dev_info.wTotalBlocks = GLOB_HWCTL_DEFAULT_BLKS; + } + + nand_dbg_print(NAND_DBG_DEBUG, "Dump timing register values:" + "acc_clks: %d, re_2_we: %d, we_2_re: %d," + "addr_2_data: %d, rdwr_en_lo_cnt: %d, " + "rdwr_en_hi_cnt: %d, cs_setup_cnt: %d\n", + ioread32(denali->flash_reg + ACC_CLKS), + ioread32(denali->flash_reg + RE_2_WE), + ioread32(denali->flash_reg + WE_2_RE), + ioread32(denali->flash_reg + ADDR_2_DATA), + ioread32(denali->flash_reg + RDWR_EN_LO_CNT), + ioread32(denali->flash_reg + RDWR_EN_HI_CNT), + ioread32(denali->flash_reg + CS_SETUP_CNT)); + + denali->dev_info.wHWRevision = ioread32(denali->flash_reg + REVISION); + denali->dev_info.wHWFeatures = ioread32(denali->flash_reg + FEATURES); + + denali->dev_info.wDeviceMainAreaSize = + ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE); + denali->dev_info.wDeviceSpareAreaSize = + ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + + denali->dev_info.wPageDataSize = + ioread32(denali->flash_reg + LOGICAL_PAGE_DATA_SIZE); + + /* Note: When using the Micon 4K NAND device, the controller will report + * Page Spare Size as 216 bytes. But Micron's Spec say it's 218 bytes. + * And if force set it to 218 bytes, the controller can not work + * correctly. So just let it be. But keep in mind that this bug may + * cause + * other problems in future. - Yunpeng 2008-10-10 + */ + denali->dev_info.wPageSpareSize = + ioread32(denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE); + + denali->dev_info.wPagesPerBlock = ioread32(denali->flash_reg + PAGES_PER_BLOCK); + + denali->dev_info.wPageSize = + denali->dev_info.wPageDataSize + denali->dev_info.wPageSpareSize; + denali->dev_info.wBlockSize = + denali->dev_info.wPageSize * denali->dev_info.wPagesPerBlock; + denali->dev_info.wBlockDataSize = + denali->dev_info.wPagesPerBlock * denali->dev_info.wPageDataSize; + + denali->dev_info.wDeviceWidth = ioread32(denali->flash_reg + DEVICE_WIDTH); + denali->dev_info.wDeviceType = + ((ioread32(denali->flash_reg + DEVICE_WIDTH) > 0) ? 16 : 8); + + denali->dev_info.wDevicesConnected = ioread32(denali->flash_reg + DEVICES_CONNECTED); + + denali->dev_info.wSpareSkipBytes = + ioread32(denali->flash_reg + SPARE_AREA_SKIP_BYTES) * + denali->dev_info.wDevicesConnected; + + denali->dev_info.nBitsInPageNumber = + ilog2(denali->dev_info.wPagesPerBlock); + denali->dev_info.nBitsInPageDataSize = + ilog2(denali->dev_info.wPageDataSize); + denali->dev_info.nBitsInBlockDataSize = + ilog2(denali->dev_info.wBlockDataSize); + + set_ecc_config(denali); + + no_of_planes = ioread32(denali->flash_reg + NUMBER_OF_PLANES) & + NUMBER_OF_PLANES__VALUE; + + switch (no_of_planes) { + case 0: + case 1: + case 3: + case 7: + denali->dev_info.bPlaneNum = no_of_planes + 1; + break; + default: + status = FAIL; + break; + } + + find_valid_banks(denali); + + detect_partition_feature(denali); + + dump_device_info(denali); + + /* If the user specified to override the default timings + * with a specific ONFI mode, we apply those changes here. + */ + if (onfi_timing_mode != NAND_DEFAULT_TIMINGS) + { + NAND_ONFi_Timing_Mode(denali, onfi_timing_mode); + } + + return status; +} + +static void NAND_LLD_Enable_Disable_Interrupts(struct denali_nand_info *denali, + uint16_t INT_ENABLE) +{ + nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", + __FILE__, __LINE__, __func__); + + if (INT_ENABLE) + denali_write32(1, denali->flash_reg + GLOBAL_INT_ENABLE); + else + denali_write32(0, denali->flash_reg + GLOBAL_INT_ENABLE); +} + +/* validation function to verify that the controlling software is making + a valid request + */ +static inline bool is_flash_bank_valid(int flash_bank) +{ + return (flash_bank >= 0 && flash_bank < 4); +} + +static void denali_irq_init(struct denali_nand_info *denali) +{ + uint32_t int_mask = 0; + + /* Disable global interrupts */ + NAND_LLD_Enable_Disable_Interrupts(denali, false); + + int_mask = DENALI_IRQ_ALL; + + /* Clear all status bits */ + denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS0); + denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS1); + denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS2); + denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS3); + + denali_irq_enable(denali, int_mask); +} + +static void denali_irq_cleanup(int irqnum, struct denali_nand_info *denali) +{ + NAND_LLD_Enable_Disable_Interrupts(denali, false); + free_irq(irqnum, denali); +} + +static void denali_irq_enable(struct denali_nand_info *denali, uint32_t int_mask) +{ + denali_write32(int_mask, denali->flash_reg + INTR_EN0); + denali_write32(int_mask, denali->flash_reg + INTR_EN1); + denali_write32(int_mask, denali->flash_reg + INTR_EN2); + denali_write32(int_mask, denali->flash_reg + INTR_EN3); +} + +/* This function only returns when an interrupt that this driver cares about + * occurs. This is to reduce the overhead of servicing interrupts + */ +static inline uint32_t denali_irq_detected(struct denali_nand_info *denali) +{ + return (read_interrupt_status(denali) & DENALI_IRQ_ALL); +} + +/* Interrupts are cleared by writing a 1 to the appropriate status bit */ +static inline void clear_interrupt(struct denali_nand_info *denali, uint32_t irq_mask) +{ + uint32_t intr_status_reg = 0; + + intr_status_reg = intr_status_addresses[denali->flash_bank]; + + denali_write32(irq_mask, denali->flash_reg + intr_status_reg); +} + +static void clear_interrupts(struct denali_nand_info *denali) +{ + uint32_t status = 0x0; + spin_lock_irq(&denali->irq_lock); + + status = read_interrupt_status(denali); + +#if DEBUG_DENALI + denali->irq_debug_array[denali->idx++] = 0x30000000 | status; + denali->idx %= 32; +#endif + + denali->irq_status = 0x0; + spin_unlock_irq(&denali->irq_lock); +} + +static uint32_t read_interrupt_status(struct denali_nand_info *denali) +{ + uint32_t intr_status_reg = 0; + + intr_status_reg = intr_status_addresses[denali->flash_bank]; + + return ioread32(denali->flash_reg + intr_status_reg); +} + +#if DEBUG_DENALI +static void print_irq_log(struct denali_nand_info *denali) +{ + int i = 0; + + printk("ISR debug log index = %X\n", denali->idx); + for (i = 0; i < 32; i++) + { + printk("%08X: %08X\n", i, denali->irq_debug_array[i]); + } +} +#endif + +/* This is the interrupt service routine. It handles all interrupts + * sent to this device. Note that on CE4100, this is a shared + * interrupt. + */ +static irqreturn_t denali_isr(int irq, void *dev_id) +{ + struct denali_nand_info *denali = dev_id; + uint32_t irq_status = 0x0; + irqreturn_t result = IRQ_NONE; + + spin_lock(&denali->irq_lock); + + /* check to see if a valid NAND chip has + * been selected. + */ + if (is_flash_bank_valid(denali->flash_bank)) + { + /* check to see if controller generated + * the interrupt, since this is a shared interrupt */ + if ((irq_status = denali_irq_detected(denali)) != 0) + { +#if DEBUG_DENALI + denali->irq_debug_array[denali->idx++] = 0x10000000 | irq_status; + denali->idx %= 32; + + printk("IRQ status = 0x%04x\n", irq_status); +#endif + /* handle interrupt */ + /* first acknowledge it */ + clear_interrupt(denali, irq_status); + /* store the status in the device context for someone + to read */ + denali->irq_status |= irq_status; + /* notify anyone who cares that it happened */ + complete(&denali->complete); + /* tell the OS that we've handled this */ + result = IRQ_HANDLED; + } + } + spin_unlock(&denali->irq_lock); + return result; +} +#define BANK(x) ((x) << 24) + +static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask) +{ + unsigned long comp_res = 0; + uint32_t intr_status = 0; + bool retry = false; + unsigned long timeout = msecs_to_jiffies(1000); + + do + { +#if DEBUG_DENALI + printk("waiting for 0x%x\n", irq_mask); +#endif + comp_res = wait_for_completion_timeout(&denali->complete, timeout); + spin_lock_irq(&denali->irq_lock); + intr_status = denali->irq_status; + +#if DEBUG_DENALI + denali->irq_debug_array[denali->idx++] = 0x20000000 | (irq_mask << 16) | intr_status; + denali->idx %= 32; +#endif + + if (intr_status & irq_mask) + { + denali->irq_status &= ~irq_mask; + spin_unlock_irq(&denali->irq_lock); +#if DEBUG_DENALI + if (retry) printk("status on retry = 0x%x\n", intr_status); +#endif + /* our interrupt was detected */ + break; + } + else + { + /* these are not the interrupts you are looking for - + need to wait again */ + spin_unlock_irq(&denali->irq_lock); +#if DEBUG_DENALI + print_irq_log(denali); + printk("received irq nobody cared: irq_status = 0x%x," + " irq_mask = 0x%x, timeout = %ld\n", intr_status, irq_mask, comp_res); +#endif + retry = true; + } + } while (comp_res != 0); + + if (comp_res == 0) + { + /* timeout */ + printk(KERN_ERR "timeout occurred, status = 0x%x, mask = 0x%x\n", + intr_status, irq_mask); + + intr_status = 0; + } + return intr_status; +} + +/* This helper function setups the registers for ECC and whether or not + the spare area will be transfered. */ +static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en, + bool transfer_spare) +{ + int ecc_en_flag = 0, transfer_spare_flag = 0; + + /* set ECC, transfer spare bits if needed */ + ecc_en_flag = ecc_en ? ECC_ENABLE__FLAG : 0; + transfer_spare_flag = transfer_spare ? TRANSFER_SPARE_REG__FLAG : 0; + + /* Enable spare area/ECC per user's request. */ + denali_write32(ecc_en_flag, denali->flash_reg + ECC_ENABLE); + denali_write32(transfer_spare_flag, denali->flash_reg + TRANSFER_SPARE_REG); +} + +/* sends a pipeline command operation to the controller. See the Denali NAND + controller's user guide for more information (section 4.2.3.6). + */ +static int denali_send_pipeline_cmd(struct denali_nand_info *denali, bool ecc_en, + bool transfer_spare, int access_type, + int op) +{ + int status = PASS; + uint32_t addr = 0x0, cmd = 0x0, page_count = 1, irq_status = 0, + irq_mask = 0; + + if (op == DENALI_READ) irq_mask = INTR_STATUS0__LOAD_COMP; + else if (op == DENALI_WRITE) irq_mask = 0; + else BUG(); + + setup_ecc_for_xfer(denali, ecc_en, transfer_spare); + +#if DEBUG_DENALI + spin_lock_irq(&denali->irq_lock); + denali->irq_debug_array[denali->idx++] = 0x40000000 | ioread32(denali->flash_reg + ECC_ENABLE) | (access_type << 4); + denali->idx %= 32; + spin_unlock_irq(&denali->irq_lock); +#endif + + + /* clear interrupts */ + clear_interrupts(denali); + + addr = BANK(denali->flash_bank) | denali->page; + + if (op == DENALI_WRITE && access_type != SPARE_ACCESS) + { + cmd = MODE_01 | addr; + denali_write32(cmd, denali->flash_mem); + } + else if (op == DENALI_WRITE && access_type == SPARE_ACCESS) + { + /* read spare area */ + cmd = MODE_10 | addr; + index_addr(denali, (uint32_t)cmd, access_type); + + cmd = MODE_01 | addr; + denali_write32(cmd, denali->flash_mem); + } + else if (op == DENALI_READ) + { + /* setup page read request for access type */ + cmd = MODE_10 | addr; + index_addr(denali, (uint32_t)cmd, access_type); + + /* page 33 of the NAND controller spec indicates we should not + use the pipeline commands in Spare area only mode. So we + don't. + */ + if (access_type == SPARE_ACCESS) + { + cmd = MODE_01 | addr; + denali_write32(cmd, denali->flash_mem); + } + else + { + index_addr(denali, (uint32_t)cmd, 0x2000 | op | page_count); + + /* wait for command to be accepted + * can always use status0 bit as the mask is identical for each + * bank. */ + irq_status = wait_for_irq(denali, irq_mask); + + if (irq_status == 0) + { + printk(KERN_ERR "cmd, page, addr on timeout " + "(0x%x, 0x%x, 0x%x)\n", cmd, denali->page, addr); + status = FAIL; + } + else + { + cmd = MODE_01 | addr; + denali_write32(cmd, denali->flash_mem); + } + } + } + return status; +} + +/* helper function that simply writes a buffer to the flash */ +static int write_data_to_flash_mem(struct denali_nand_info *denali, const uint8_t *buf, + int len) +{ + uint32_t i = 0, *buf32; + + /* verify that the len is a multiple of 4. see comment in + * read_data_from_flash_mem() */ + BUG_ON((len % 4) != 0); + + /* write the data to the flash memory */ + buf32 = (uint32_t *)buf; + for (i = 0; i < len / 4; i++) + { + denali_write32(*buf32++, denali->flash_mem + 0x10); + } + return i*4; /* intent is to return the number of bytes read */ +} + +/* helper function that simply reads a buffer from the flash */ +static int read_data_from_flash_mem(struct denali_nand_info *denali, uint8_t *buf, + int len) +{ + uint32_t i = 0, *buf32; + + /* we assume that len will be a multiple of 4, if not + * it would be nice to know about it ASAP rather than + * have random failures... + * + * This assumption is based on the fact that this + * function is designed to be used to read flash pages, + * which are typically multiples of 4... + */ + + BUG_ON((len % 4) != 0); + + /* transfer the data from the flash */ + buf32 = (uint32_t *)buf; + for (i = 0; i < len / 4; i++) + { + *buf32++ = ioread32(denali->flash_mem + 0x10); + } + return i*4; /* intent is to return the number of bytes read */ +} + +/* writes OOB data to the device */ +static int write_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + uint32_t irq_status = 0; + uint32_t irq_mask = INTR_STATUS0__PROGRAM_COMP | + INTR_STATUS0__PROGRAM_FAIL; + int status = 0; + + denali->page = page; + + if (denali_send_pipeline_cmd(denali, false, false, SPARE_ACCESS, + DENALI_WRITE) == PASS) + { + write_data_to_flash_mem(denali, buf, mtd->oobsize); + +#if DEBUG_DENALI + spin_lock_irq(&denali->irq_lock); + denali->irq_debug_array[denali->idx++] = 0x80000000 | mtd->oobsize; + denali->idx %= 32; + spin_unlock_irq(&denali->irq_lock); +#endif + + + /* wait for operation to complete */ + irq_status = wait_for_irq(denali, irq_mask); + + if (irq_status == 0) + { + printk(KERN_ERR "OOB write failed\n"); + status = -EIO; + } + } + else + { + printk(KERN_ERR "unable to send pipeline command\n"); + status = -EIO; + } + return status; +} + +/* reads OOB data from the device */ +static void read_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + uint32_t irq_mask = INTR_STATUS0__LOAD_COMP, irq_status = 0, addr = 0x0, cmd = 0x0; + + denali->page = page; + +#if DEBUG_DENALI + printk("read_oob %d\n", page); +#endif + if (denali_send_pipeline_cmd(denali, false, true, SPARE_ACCESS, + DENALI_READ) == PASS) + { + read_data_from_flash_mem(denali, buf, mtd->oobsize); + + /* wait for command to be accepted + * can always use status0 bit as the mask is identical for each + * bank. */ + irq_status = wait_for_irq(denali, irq_mask); + + if (irq_status == 0) + { + printk(KERN_ERR "page on OOB timeout %d\n", denali->page); + } + + /* We set the device back to MAIN_ACCESS here as I observed + * instability with the controller if you do a block erase + * and the last transaction was a SPARE_ACCESS. Block erase + * is reliable (according to the MTD test infrastructure) + * if you are in MAIN_ACCESS. + */ + addr = BANK(denali->flash_bank) | denali->page; + cmd = MODE_10 | addr; + index_addr(denali, (uint32_t)cmd, MAIN_ACCESS); + +#if DEBUG_DENALI + spin_lock_irq(&denali->irq_lock); + denali->irq_debug_array[denali->idx++] = 0x60000000 | mtd->oobsize; + denali->idx %= 32; + spin_unlock_irq(&denali->irq_lock); +#endif + } +} + +/* this function examines buffers to see if they contain data that + * indicate that the buffer is part of an erased region of flash. + */ +bool is_erased(uint8_t *buf, int len) +{ + int i = 0; + for (i = 0; i < len; i++) + { + if (buf[i] != 0xFF) + { + return false; + } + } + return true; +} +#define ECC_SECTOR_SIZE 512 + +#define ECC_SECTOR(x) (((x) & ECC_ERROR_ADDRESS__SECTOR_NR) >> 12) +#define ECC_BYTE(x) (((x) & ECC_ERROR_ADDRESS__OFFSET)) +#define ECC_CORRECTION_VALUE(x) ((x) & ERR_CORRECTION_INFO__BYTEMASK) +#define ECC_ERROR_CORRECTABLE(x) (!((x) & ERR_CORRECTION_INFO)) +#define ECC_ERR_DEVICE(x) ((x) & ERR_CORRECTION_INFO__DEVICE_NR >> 8) +#define ECC_LAST_ERR(x) ((x) & ERR_CORRECTION_INFO__LAST_ERR_INFO) + +static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf, + uint8_t *oobbuf, uint32_t irq_status) +{ + bool check_erased_page = false; + + if (irq_status & INTR_STATUS0__ECC_ERR) + { + /* read the ECC errors. we'll ignore them for now */ + uint32_t err_address = 0, err_correction_info = 0; + uint32_t err_byte = 0, err_sector = 0, err_device = 0; + uint32_t err_correction_value = 0; + + do + { + err_address = ioread32(denali->flash_reg + + ECC_ERROR_ADDRESS); + err_sector = ECC_SECTOR(err_address); + err_byte = ECC_BYTE(err_address); + + + err_correction_info = ioread32(denali->flash_reg + + ERR_CORRECTION_INFO); + err_correction_value = + ECC_CORRECTION_VALUE(err_correction_info); + err_device = ECC_ERR_DEVICE(err_correction_info); + + if (ECC_ERROR_CORRECTABLE(err_correction_info)) + { + /* offset in our buffer is computed as: + sector number * sector size + offset in + sector + */ + int offset = err_sector * ECC_SECTOR_SIZE + + err_byte; + if (offset < denali->mtd.writesize) + { + /* correct the ECC error */ + buf[offset] ^= err_correction_value; + denali->mtd.ecc_stats.corrected++; + } + else + { + /* bummer, couldn't correct the error */ + printk(KERN_ERR "ECC offset invalid\n"); + denali->mtd.ecc_stats.failed++; + } + } + else + { + /* if the error is not correctable, need to + * look at the page to see if it is an erased page. + * if so, then it's not a real ECC error */ + check_erased_page = true; + } + +#if DEBUG_DENALI + printk("Detected ECC error in page %d: err_addr = 0x%08x," + " info to fix is 0x%08x\n", denali->page, err_address, + err_correction_info); +#endif + } while (!ECC_LAST_ERR(err_correction_info)); + } + return check_erased_page; +} + +/* programs the controller to either enable/disable DMA transfers */ +static void enable_dma(struct denali_nand_info *denali, bool en) +{ + uint32_t reg_val = 0x0; + + if (en) reg_val = DMA_ENABLE__FLAG; + + denali_write32(reg_val, denali->flash_reg + DMA_ENABLE); + ioread32(denali->flash_reg + DMA_ENABLE); +} + +/* setups the HW to perform the data DMA */ +static void setup_dma(struct denali_nand_info *denali, int op) +{ + uint32_t mode = 0x0; + const int page_count = 1; + dma_addr_t addr = denali->buf.dma_buf; + + mode = MODE_10 | BANK(denali->flash_bank); + + /* DMA is a four step process */ + + /* 1. setup transfer type and # of pages */ + index_addr(denali, mode | denali->page, 0x2000 | op | page_count); + + /* 2. set memory high address bits 23:8 */ + index_addr(denali, mode | ((uint16_t)(addr >> 16) << 8), 0x2200); + + /* 3. set memory low address bits 23:8 */ + index_addr(denali, mode | ((uint16_t)addr << 8), 0x2300); + + /* 4. interrupt when complete, burst len = 64 bytes*/ + index_addr(denali, mode | 0x14000, 0x2400); +} + +/* writes a page. user specifies type, and this function handles the + configuration details. */ +static void write_page(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, bool raw_xfer) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + struct pci_dev *pci_dev = denali->dev; + + dma_addr_t addr = denali->buf.dma_buf; + size_t size = denali->mtd.writesize + denali->mtd.oobsize; + + uint32_t irq_status = 0; + uint32_t irq_mask = INTR_STATUS0__DMA_CMD_COMP | + INTR_STATUS0__PROGRAM_FAIL; + + /* if it is a raw xfer, we want to disable ecc, and send + * the spare area. + * !raw_xfer - enable ecc + * raw_xfer - transfer spare + */ + setup_ecc_for_xfer(denali, !raw_xfer, raw_xfer); + + /* copy buffer into DMA buffer */ + memcpy(denali->buf.buf, buf, mtd->writesize); + + if (raw_xfer) + { + /* transfer the data to the spare area */ + memcpy(denali->buf.buf + mtd->writesize, + chip->oob_poi, + mtd->oobsize); + } + + pci_dma_sync_single_for_device(pci_dev, addr, size, PCI_DMA_TODEVICE); + + clear_interrupts(denali); + enable_dma(denali, true); + + setup_dma(denali, DENALI_WRITE); + + /* wait for operation to complete */ + irq_status = wait_for_irq(denali, irq_mask); + + if (irq_status == 0) + { + printk(KERN_ERR "timeout on write_page (type = %d)\n", raw_xfer); + denali->status = + (irq_status & INTR_STATUS0__PROGRAM_FAIL) ? NAND_STATUS_FAIL : + PASS; + } + + enable_dma(denali, false); + pci_dma_sync_single_for_cpu(pci_dev, addr, size, PCI_DMA_TODEVICE); +} + +/* NAND core entry points */ + +/* this is the callback that the NAND core calls to write a page. Since + writing a page with ECC or without is similar, all the work is done + by write_page above. */ +static void denali_write_page(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf) +{ + /* for regular page writes, we let HW handle all the ECC + * data written to the device. */ + write_page(mtd, chip, buf, false); +} + +/* This is the callback that the NAND core calls to write a page without ECC. + raw access is similiar to ECC page writes, so all the work is done in the + write_page() function above. + */ +static void denali_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf) +{ + /* for raw page writes, we want to disable ECC and simply write + whatever data is in the buffer. */ + write_page(mtd, chip, buf, true); +} + +static int denali_write_oob(struct mtd_info *mtd, struct nand_chip *chip, + int page) +{ + return write_oob_data(mtd, chip->oob_poi, page); +} + +static int denali_read_oob(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd) +{ + read_oob_data(mtd, chip->oob_poi, page); + + return 0; /* notify NAND core to send command to + * NAND device. */ +} + +static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int page) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + struct pci_dev *pci_dev = denali->dev; + + dma_addr_t addr = denali->buf.dma_buf; + size_t size = denali->mtd.writesize + denali->mtd.oobsize; + + uint32_t irq_status = 0; + uint32_t irq_mask = INTR_STATUS0__ECC_TRANSACTION_DONE | + INTR_STATUS0__ECC_ERR; + bool check_erased_page = false; + + setup_ecc_for_xfer(denali, true, false); + + enable_dma(denali, true); + pci_dma_sync_single_for_device(pci_dev, addr, size, PCI_DMA_FROMDEVICE); + + clear_interrupts(denali); + setup_dma(denali, DENALI_READ); + + /* wait for operation to complete */ + irq_status = wait_for_irq(denali, irq_mask); + + pci_dma_sync_single_for_cpu(pci_dev, addr, size, PCI_DMA_FROMDEVICE); + + memcpy(buf, denali->buf.buf, mtd->writesize); + + check_erased_page = handle_ecc(denali, buf, chip->oob_poi, irq_status); + enable_dma(denali, false); + + if (check_erased_page) + { + read_oob_data(&denali->mtd, chip->oob_poi, denali->page); + + /* check ECC failures that may have occurred on erased pages */ + if (check_erased_page) + { + if (!is_erased(buf, denali->mtd.writesize)) + { + denali->mtd.ecc_stats.failed++; + } + if (!is_erased(buf, denali->mtd.oobsize)) + { + denali->mtd.ecc_stats.failed++; + } + } + } + return 0; +} + +static int denali_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int page) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + struct pci_dev *pci_dev = denali->dev; + + dma_addr_t addr = denali->buf.dma_buf; + size_t size = denali->mtd.writesize + denali->mtd.oobsize; + + uint32_t irq_status = 0; + uint32_t irq_mask = INTR_STATUS0__DMA_CMD_COMP; + + setup_ecc_for_xfer(denali, false, true); + enable_dma(denali, true); + + pci_dma_sync_single_for_device(pci_dev, addr, size, PCI_DMA_FROMDEVICE); + + clear_interrupts(denali); + setup_dma(denali, DENALI_READ); + + /* wait for operation to complete */ + irq_status = wait_for_irq(denali, irq_mask); + + pci_dma_sync_single_for_cpu(pci_dev, addr, size, PCI_DMA_FROMDEVICE); + + enable_dma(denali, false); + + memcpy(buf, denali->buf.buf, mtd->writesize); + memcpy(chip->oob_poi, denali->buf.buf + mtd->writesize, mtd->oobsize); + + return 0; +} + +static uint8_t denali_read_byte(struct mtd_info *mtd) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + uint8_t result = 0xff; + + if (denali->buf.head < denali->buf.tail) + { + result = denali->buf.buf[denali->buf.head++]; + } + +#if DEBUG_DENALI + printk("read byte -> 0x%02x\n", result); +#endif + return result; +} + +static void denali_select_chip(struct mtd_info *mtd, int chip) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); +#if DEBUG_DENALI + printk("denali select chip %d\n", chip); +#endif + spin_lock_irq(&denali->irq_lock); + denali->flash_bank = chip; + spin_unlock_irq(&denali->irq_lock); +} + +static int denali_waitfunc(struct mtd_info *mtd, struct nand_chip *chip) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + int status = denali->status; + denali->status = 0; + +#if DEBUG_DENALI + printk("waitfunc %d\n", status); +#endif + return status; +} + +static void denali_erase(struct mtd_info *mtd, int page) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + + uint32_t cmd = 0x0, irq_status = 0; + +#if DEBUG_DENALI + printk("erase page: %d\n", page); +#endif + /* clear interrupts */ + clear_interrupts(denali); + + /* setup page read request for access type */ + cmd = MODE_10 | BANK(denali->flash_bank) | page; + index_addr(denali, (uint32_t)cmd, 0x1); + + /* wait for erase to complete or failure to occur */ + irq_status = wait_for_irq(denali, INTR_STATUS0__ERASE_COMP | + INTR_STATUS0__ERASE_FAIL); + + denali->status = (irq_status & INTR_STATUS0__ERASE_FAIL) ? NAND_STATUS_FAIL : + PASS; +} + +static void denali_cmdfunc(struct mtd_info *mtd, unsigned int cmd, int col, + int page) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + +#if DEBUG_DENALI + printk("cmdfunc: 0x%x %d %d\n", cmd, col, page); +#endif + switch (cmd) + { + case NAND_CMD_PAGEPROG: + break; + case NAND_CMD_STATUS: + read_status(denali); + break; + case NAND_CMD_READID: + reset_buf(denali); + if (denali->flash_bank < denali->total_used_banks) + { + /* write manufacturer information into nand + buffer for NAND subsystem to fetch. + */ + write_byte_to_buf(denali, denali->dev_info.wDeviceMaker); + write_byte_to_buf(denali, denali->dev_info.wDeviceID); + write_byte_to_buf(denali, denali->dev_info.bDeviceParam0); + write_byte_to_buf(denali, denali->dev_info.bDeviceParam1); + write_byte_to_buf(denali, denali->dev_info.bDeviceParam2); + } + else + { + int i; + for (i = 0; i < 5; i++) + write_byte_to_buf(denali, 0xff); + } + break; + case NAND_CMD_READ0: + case NAND_CMD_SEQIN: + denali->page = page; + break; + case NAND_CMD_RESET: + reset_bank(denali); + break; + case NAND_CMD_READOOB: + /* TODO: Read OOB data */ + break; + default: + printk(KERN_ERR ": unsupported command received 0x%x\n", cmd); + break; + } +} + +/* stubs for ECC functions not used by the NAND core */ +static int denali_ecc_calculate(struct mtd_info *mtd, const uint8_t *data, + uint8_t *ecc_code) +{ + printk(KERN_ERR "denali_ecc_calculate called unexpectedly\n"); + BUG(); + return -EIO; +} + +static int denali_ecc_correct(struct mtd_info *mtd, uint8_t *data, + uint8_t *read_ecc, uint8_t *calc_ecc) +{ + printk(KERN_ERR "denali_ecc_correct called unexpectedly\n"); + BUG(); + return -EIO; +} + +static void denali_ecc_hwctl(struct mtd_info *mtd, int mode) +{ + printk(KERN_ERR "denali_ecc_hwctl called unexpectedly\n"); + BUG(); +} +/* end NAND core entry points */ + +/* Initialization code to bring the device up to a known good state */ +static void denali_hw_init(struct denali_nand_info *denali) +{ + denali_irq_init(denali); + NAND_Flash_Reset(denali); + denali_write32(0x0F, denali->flash_reg + RB_PIN_ENABLED); + denali_write32(CHIP_EN_DONT_CARE__FLAG, denali->flash_reg + CHIP_ENABLE_DONT_CARE); + + denali_write32(0x0, denali->flash_reg + SPARE_AREA_SKIP_BYTES); + denali_write32(0xffff, denali->flash_reg + SPARE_AREA_MARKER); + + /* Should set value for these registers when init */ + denali_write32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES); + denali_write32(1, denali->flash_reg + ECC_ENABLE); +} + +/* ECC layout for SLC devices. Denali spec indicates SLC fixed at 4 bytes */ +#define ECC_BYTES_SLC 4 * (2048 / ECC_SECTOR_SIZE) +static struct nand_ecclayout nand_oob_slc = { + .eccbytes = 4, + .eccpos = { 0, 1, 2, 3 }, /* not used */ + .oobfree = {{ + .offset = ECC_BYTES_SLC, + .length = 64 - ECC_BYTES_SLC + }} +}; + +#define ECC_BYTES_MLC 14 * (2048 / ECC_SECTOR_SIZE) +static struct nand_ecclayout nand_oob_mlc_14bit = { + .eccbytes = 14, + .eccpos = { 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13 }, /* not used */ + .oobfree = {{ + .offset = ECC_BYTES_MLC, + .length = 64 - ECC_BYTES_MLC + }} +}; + +static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; +static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' }; + +static struct nand_bbt_descr bbt_main_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, + .offs = 8, + .len = 4, + .veroffs = 12, + .maxblocks = 4, + .pattern = bbt_pattern, +}; + +static struct nand_bbt_descr bbt_mirror_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, + .offs = 8, + .len = 4, + .veroffs = 12, + .maxblocks = 4, + .pattern = mirror_pattern, +}; + +/* initalize driver data structures */ +void denali_drv_init(struct denali_nand_info *denali) +{ + denali->idx = 0; + + /* setup interrupt handler */ + /* the completion object will be used to notify + * the callee that the interrupt is done */ + init_completion(&denali->complete); + + /* the spinlock will be used to synchronize the ISR + * with any element that might be access shared + * data (interrupt status) */ + spin_lock_init(&denali->irq_lock); + + /* indicate that MTD has not selected a valid bank yet */ + denali->flash_bank = CHIP_SELECT_INVALID; + + /* initialize our irq_status variable to indicate no interrupts */ + denali->irq_status = 0; +} + +/* driver entry point */ +static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + int ret = -ENODEV; + resource_size_t csr_base, mem_base; + unsigned long csr_len, mem_len; + struct denali_nand_info *denali; + + nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", + __FILE__, __LINE__, __func__); + + denali = kzalloc(sizeof(*denali), GFP_KERNEL); + if (!denali) + return -ENOMEM; + + ret = pci_enable_device(dev); + if (ret) { + printk(KERN_ERR "Spectra: pci_enable_device failed.\n"); + goto failed_enable; + } + + if (id->driver_data == INTEL_CE4100) { + /* Due to a silicon limitation, we can only support + * ONFI timing mode 1 and below. + */ + if (onfi_timing_mode < -1 || onfi_timing_mode > 1) + { + printk("Intel CE4100 only supports ONFI timing mode 1 " + "or below\n"); + ret = -EINVAL; + goto failed_enable; + } + denali->platform = INTEL_CE4100; + mem_base = pci_resource_start(dev, 0); + mem_len = pci_resource_len(dev, 1); + csr_base = pci_resource_start(dev, 1); + csr_len = pci_resource_len(dev, 1); + } else { + denali->platform = INTEL_MRST; + csr_base = pci_resource_start(dev, 0); + csr_len = pci_resource_start(dev, 0); + mem_base = pci_resource_start(dev, 1); + mem_len = pci_resource_len(dev, 1); + if (!mem_len) { + mem_base = csr_base + csr_len; + mem_len = csr_len; + nand_dbg_print(NAND_DBG_WARN, + "Spectra: No second BAR for PCI device; assuming %08Lx\n", + (uint64_t)csr_base); + } + } + + /* Is 32-bit DMA supported? */ + ret = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); + + if (ret) + { + printk(KERN_ERR "Spectra: no usable DMA configuration\n"); + goto failed_enable; + } + denali->buf.dma_buf = pci_map_single(dev, denali->buf.buf, DENALI_BUF_SIZE, + PCI_DMA_BIDIRECTIONAL); + + if (pci_dma_mapping_error(dev, denali->buf.dma_buf)) + { + printk(KERN_ERR "Spectra: failed to map DMA buffer\n"); + goto failed_enable; + } + + pci_set_master(dev); + denali->dev = dev; + + ret = pci_request_regions(dev, DENALI_NAND_NAME); + if (ret) { + printk(KERN_ERR "Spectra: Unable to request memory regions\n"); + goto failed_req_csr; + } + + denali->flash_reg = ioremap_nocache(csr_base, csr_len); + if (!denali->flash_reg) { + printk(KERN_ERR "Spectra: Unable to remap memory region\n"); + ret = -ENOMEM; + goto failed_remap_csr; + } + nand_dbg_print(NAND_DBG_DEBUG, "Spectra: CSR 0x%08Lx -> 0x%p (0x%lx)\n", + (uint64_t)csr_base, denali->flash_reg, csr_len); + + denali->flash_mem = ioremap_nocache(mem_base, mem_len); + if (!denali->flash_mem) { + printk(KERN_ERR "Spectra: ioremap_nocache failed!"); + iounmap(denali->flash_reg); + ret = -ENOMEM; + goto failed_remap_csr; + } + + nand_dbg_print(NAND_DBG_WARN, + "Spectra: Remapped flash base address: " + "0x%p, len: %ld\n", + denali->flash_mem, csr_len); + + denali_hw_init(denali); + denali_drv_init(denali); + + nand_dbg_print(NAND_DBG_DEBUG, "Spectra: IRQ %d\n", dev->irq); + if (request_irq(dev->irq, denali_isr, IRQF_SHARED, + DENALI_NAND_NAME, denali)) { + printk(KERN_ERR "Spectra: Unable to allocate IRQ\n"); + ret = -ENODEV; + goto failed_request_irq; + } + + /* now that our ISR is registered, we can enable interrupts */ + NAND_LLD_Enable_Disable_Interrupts(denali, true); + + pci_set_drvdata(dev, denali); + + NAND_Read_Device_ID(denali); + + /* MTD supported page sizes vary by kernel. We validate our + kernel supports the device here. + */ + if (denali->dev_info.wPageSize > NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE) + { + ret = -ENODEV; + printk(KERN_ERR "Spectra: device size not supported by this " + "version of MTD."); + goto failed_nand; + } + + nand_dbg_print(NAND_DBG_DEBUG, "Dump timing register values:" + "acc_clks: %d, re_2_we: %d, we_2_re: %d," + "addr_2_data: %d, rdwr_en_lo_cnt: %d, " + "rdwr_en_hi_cnt: %d, cs_setup_cnt: %d\n", + ioread32(denali->flash_reg + ACC_CLKS), + ioread32(denali->flash_reg + RE_2_WE), + ioread32(denali->flash_reg + WE_2_RE), + ioread32(denali->flash_reg + ADDR_2_DATA), + ioread32(denali->flash_reg + RDWR_EN_LO_CNT), + ioread32(denali->flash_reg + RDWR_EN_HI_CNT), + ioread32(denali->flash_reg + CS_SETUP_CNT)); + + denali->mtd.name = "Denali NAND"; + denali->mtd.owner = THIS_MODULE; + denali->mtd.priv = &denali->nand; + + /* register the driver with the NAND core subsystem */ + denali->nand.select_chip = denali_select_chip; + denali->nand.cmdfunc = denali_cmdfunc; + denali->nand.read_byte = denali_read_byte; + denali->nand.waitfunc = denali_waitfunc; + + /* scan for NAND devices attached to the controller + * this is the first stage in a two step process to register + * with the nand subsystem */ + if (nand_scan_ident(&denali->mtd, LLD_MAX_FLASH_BANKS, NULL)) + { + ret = -ENXIO; + goto failed_nand; + } + + /* second stage of the NAND scan + * this stage requires information regarding ECC and + * bad block management. */ + + /* Bad block management */ + denali->nand.bbt_td = &bbt_main_descr; + denali->nand.bbt_md = &bbt_mirror_descr; + + /* skip the scan for now until we have OOB read and write support */ + denali->nand.options |= NAND_USE_FLASH_BBT | NAND_SKIP_BBTSCAN; + denali->nand.ecc.mode = NAND_ECC_HW_SYNDROME; + + if (denali->dev_info.MLCDevice) + { + denali->nand.ecc.layout = &nand_oob_mlc_14bit; + denali->nand.ecc.bytes = ECC_BYTES_MLC; + } + else /* SLC */ + { + denali->nand.ecc.layout = &nand_oob_slc; + denali->nand.ecc.bytes = ECC_BYTES_SLC; + } + + /* These functions are required by the NAND core framework, otherwise, + the NAND core will assert. However, we don't need them, so we'll stub + them out. */ + denali->nand.ecc.calculate = denali_ecc_calculate; + denali->nand.ecc.correct = denali_ecc_correct; + denali->nand.ecc.hwctl = denali_ecc_hwctl; + + /* override the default read operations */ + denali->nand.ecc.size = denali->mtd.writesize; + denali->nand.ecc.read_page = denali_read_page; + denali->nand.ecc.read_page_raw = denali_read_page_raw; + denali->nand.ecc.write_page = denali_write_page; + denali->nand.ecc.write_page_raw = denali_write_page_raw; + denali->nand.ecc.read_oob = denali_read_oob; + denali->nand.ecc.write_oob = denali_write_oob; + denali->nand.erase_cmd = denali_erase; + + if (nand_scan_tail(&denali->mtd)) + { + ret = -ENXIO; + goto failed_nand; + } + + ret = add_mtd_device(&denali->mtd); + if (ret) { + printk(KERN_ERR "Spectra: Failed to register MTD device: %d\n", ret); + goto failed_nand; + } + return 0; + + failed_nand: + denali_irq_cleanup(dev->irq, denali); + failed_request_irq: + iounmap(denali->flash_reg); + iounmap(denali->flash_mem); + failed_remap_csr: + pci_release_regions(dev); + failed_req_csr: + pci_unmap_single(dev, denali->buf.dma_buf, DENALI_BUF_SIZE, + PCI_DMA_BIDIRECTIONAL); + failed_enable: + kfree(denali); + return ret; +} + +/* driver exit point */ +static void denali_pci_remove(struct pci_dev *dev) +{ + struct denali_nand_info *denali = pci_get_drvdata(dev); + + nand_dbg_print(NAND_DBG_WARN, "%s, Line %d, Function: %s\n", + __FILE__, __LINE__, __func__); + + nand_release(&denali->mtd); + del_mtd_device(&denali->mtd); + + denali_irq_cleanup(dev->irq, denali); + + iounmap(denali->flash_reg); + iounmap(denali->flash_mem); + pci_release_regions(dev); + pci_disable_device(dev); + pci_unmap_single(dev, denali->buf.dma_buf, DENALI_BUF_SIZE, + PCI_DMA_BIDIRECTIONAL); + pci_set_drvdata(dev, NULL); + kfree(denali); +} + +MODULE_DEVICE_TABLE(pci, denali_pci_ids); + +static struct pci_driver denali_pci_driver = { + .name = DENALI_NAND_NAME, + .id_table = denali_pci_ids, + .probe = denali_pci_probe, + .remove = denali_pci_remove, +}; + +static int __devinit denali_init(void) +{ + printk(KERN_INFO "Spectra MTD driver built on %s @ %s\n", __DATE__, __TIME__); + return pci_register_driver(&denali_pci_driver); +} + +/* Free memory */ +static void __devexit denali_exit(void) +{ + pci_unregister_driver(&denali_pci_driver); +} + +module_init(denali_init); +module_exit(denali_exit); diff --git a/drivers/mtd/nand/denali.h b/drivers/mtd/nand/denali.h new file mode 100644 index 000000000000..422a29ab2f60 --- /dev/null +++ b/drivers/mtd/nand/denali.h @@ -0,0 +1,816 @@ +/* + * NAND Flash Controller Device Driver + * Copyright (c) 2009 - 2010, Intel Corporation and its suppliers. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include + +#define DEVICE_RESET 0x0 +#define DEVICE_RESET__BANK0 0x0001 +#define DEVICE_RESET__BANK1 0x0002 +#define DEVICE_RESET__BANK2 0x0004 +#define DEVICE_RESET__BANK3 0x0008 + +#define TRANSFER_SPARE_REG 0x10 +#define TRANSFER_SPARE_REG__FLAG 0x0001 + +#define LOAD_WAIT_CNT 0x20 +#define LOAD_WAIT_CNT__VALUE 0xffff + +#define PROGRAM_WAIT_CNT 0x30 +#define PROGRAM_WAIT_CNT__VALUE 0xffff + +#define ERASE_WAIT_CNT 0x40 +#define ERASE_WAIT_CNT__VALUE 0xffff + +#define INT_MON_CYCCNT 0x50 +#define INT_MON_CYCCNT__VALUE 0xffff + +#define RB_PIN_ENABLED 0x60 +#define RB_PIN_ENABLED__BANK0 0x0001 +#define RB_PIN_ENABLED__BANK1 0x0002 +#define RB_PIN_ENABLED__BANK2 0x0004 +#define RB_PIN_ENABLED__BANK3 0x0008 + +#define MULTIPLANE_OPERATION 0x70 +#define MULTIPLANE_OPERATION__FLAG 0x0001 + +#define MULTIPLANE_READ_ENABLE 0x80 +#define MULTIPLANE_READ_ENABLE__FLAG 0x0001 + +#define COPYBACK_DISABLE 0x90 +#define COPYBACK_DISABLE__FLAG 0x0001 + +#define CACHE_WRITE_ENABLE 0xa0 +#define CACHE_WRITE_ENABLE__FLAG 0x0001 + +#define CACHE_READ_ENABLE 0xb0 +#define CACHE_READ_ENABLE__FLAG 0x0001 + +#define PREFETCH_MODE 0xc0 +#define PREFETCH_MODE__PREFETCH_EN 0x0001 +#define PREFETCH_MODE__PREFETCH_BURST_LENGTH 0xfff0 + +#define CHIP_ENABLE_DONT_CARE 0xd0 +#define CHIP_EN_DONT_CARE__FLAG 0x01 + +#define ECC_ENABLE 0xe0 +#define ECC_ENABLE__FLAG 0x0001 + +#define GLOBAL_INT_ENABLE 0xf0 +#define GLOBAL_INT_EN_FLAG 0x01 + +#define WE_2_RE 0x100 +#define WE_2_RE__VALUE 0x003f + +#define ADDR_2_DATA 0x110 +#define ADDR_2_DATA__VALUE 0x003f + +#define RE_2_WE 0x120 +#define RE_2_WE__VALUE 0x003f + +#define ACC_CLKS 0x130 +#define ACC_CLKS__VALUE 0x000f + +#define NUMBER_OF_PLANES 0x140 +#define NUMBER_OF_PLANES__VALUE 0x0007 + +#define PAGES_PER_BLOCK 0x150 +#define PAGES_PER_BLOCK__VALUE 0xffff + +#define DEVICE_WIDTH 0x160 +#define DEVICE_WIDTH__VALUE 0x0003 + +#define DEVICE_MAIN_AREA_SIZE 0x170 +#define DEVICE_MAIN_AREA_SIZE__VALUE 0xffff + +#define DEVICE_SPARE_AREA_SIZE 0x180 +#define DEVICE_SPARE_AREA_SIZE__VALUE 0xffff + +#define TWO_ROW_ADDR_CYCLES 0x190 +#define TWO_ROW_ADDR_CYCLES__FLAG 0x0001 + +#define MULTIPLANE_ADDR_RESTRICT 0x1a0 +#define MULTIPLANE_ADDR_RESTRICT__FLAG 0x0001 + +#define ECC_CORRECTION 0x1b0 +#define ECC_CORRECTION__VALUE 0x001f + +#define READ_MODE 0x1c0 +#define READ_MODE__VALUE 0x000f + +#define WRITE_MODE 0x1d0 +#define WRITE_MODE__VALUE 0x000f + +#define COPYBACK_MODE 0x1e0 +#define COPYBACK_MODE__VALUE 0x000f + +#define RDWR_EN_LO_CNT 0x1f0 +#define RDWR_EN_LO_CNT__VALUE 0x001f + +#define RDWR_EN_HI_CNT 0x200 +#define RDWR_EN_HI_CNT__VALUE 0x001f + +#define MAX_RD_DELAY 0x210 +#define MAX_RD_DELAY__VALUE 0x000f + +#define CS_SETUP_CNT 0x220 +#define CS_SETUP_CNT__VALUE 0x001f + +#define SPARE_AREA_SKIP_BYTES 0x230 +#define SPARE_AREA_SKIP_BYTES__VALUE 0x003f + +#define SPARE_AREA_MARKER 0x240 +#define SPARE_AREA_MARKER__VALUE 0xffff + +#define DEVICES_CONNECTED 0x250 +#define DEVICES_CONNECTED__VALUE 0x0007 + +#define DIE_MASK 0x260 +#define DIE_MASK__VALUE 0x00ff + +#define FIRST_BLOCK_OF_NEXT_PLANE 0x270 +#define FIRST_BLOCK_OF_NEXT_PLANE__VALUE 0xffff + +#define WRITE_PROTECT 0x280 +#define WRITE_PROTECT__FLAG 0x0001 + +#define RE_2_RE 0x290 +#define RE_2_RE__VALUE 0x003f + +#define MANUFACTURER_ID 0x300 +#define MANUFACTURER_ID__VALUE 0x00ff + +#define DEVICE_ID 0x310 +#define DEVICE_ID__VALUE 0x00ff + +#define DEVICE_PARAM_0 0x320 +#define DEVICE_PARAM_0__VALUE 0x00ff + +#define DEVICE_PARAM_1 0x330 +#define DEVICE_PARAM_1__VALUE 0x00ff + +#define DEVICE_PARAM_2 0x340 +#define DEVICE_PARAM_2__VALUE 0x00ff + +#define LOGICAL_PAGE_DATA_SIZE 0x350 +#define LOGICAL_PAGE_DATA_SIZE__VALUE 0xffff + +#define LOGICAL_PAGE_SPARE_SIZE 0x360 +#define LOGICAL_PAGE_SPARE_SIZE__VALUE 0xffff + +#define REVISION 0x370 +#define REVISION__VALUE 0xffff + +#define ONFI_DEVICE_FEATURES 0x380 +#define ONFI_DEVICE_FEATURES__VALUE 0x003f + +#define ONFI_OPTIONAL_COMMANDS 0x390 +#define ONFI_OPTIONAL_COMMANDS__VALUE 0x003f + +#define ONFI_TIMING_MODE 0x3a0 +#define ONFI_TIMING_MODE__VALUE 0x003f + +#define ONFI_PGM_CACHE_TIMING_MODE 0x3b0 +#define ONFI_PGM_CACHE_TIMING_MODE__VALUE 0x003f + +#define ONFI_DEVICE_NO_OF_LUNS 0x3c0 +#define ONFI_DEVICE_NO_OF_LUNS__NO_OF_LUNS 0x00ff +#define ONFI_DEVICE_NO_OF_LUNS__ONFI_DEVICE 0x0100 + +#define ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_L 0x3d0 +#define ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_L__VALUE 0xffff + +#define ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_U 0x3e0 +#define ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_U__VALUE 0xffff + +#define FEATURES 0x3f0 +#define FEATURES__N_BANKS 0x0003 +#define FEATURES__ECC_MAX_ERR 0x003c +#define FEATURES__DMA 0x0040 +#define FEATURES__CMD_DMA 0x0080 +#define FEATURES__PARTITION 0x0100 +#define FEATURES__XDMA_SIDEBAND 0x0200 +#define FEATURES__GPREG 0x0400 +#define FEATURES__INDEX_ADDR 0x0800 + +#define TRANSFER_MODE 0x400 +#define TRANSFER_MODE__VALUE 0x0003 + +#define INTR_STATUS0 0x410 +#define INTR_STATUS0__ECC_TRANSACTION_DONE 0x0001 +#define INTR_STATUS0__ECC_ERR 0x0002 +#define INTR_STATUS0__DMA_CMD_COMP 0x0004 +#define INTR_STATUS0__TIME_OUT 0x0008 +#define INTR_STATUS0__PROGRAM_FAIL 0x0010 +#define INTR_STATUS0__ERASE_FAIL 0x0020 +#define INTR_STATUS0__LOAD_COMP 0x0040 +#define INTR_STATUS0__PROGRAM_COMP 0x0080 +#define INTR_STATUS0__ERASE_COMP 0x0100 +#define INTR_STATUS0__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_STATUS0__LOCKED_BLK 0x0400 +#define INTR_STATUS0__UNSUP_CMD 0x0800 +#define INTR_STATUS0__INT_ACT 0x1000 +#define INTR_STATUS0__RST_COMP 0x2000 +#define INTR_STATUS0__PIPE_CMD_ERR 0x4000 +#define INTR_STATUS0__PAGE_XFER_INC 0x8000 + +#define INTR_EN0 0x420 +#define INTR_EN0__ECC_TRANSACTION_DONE 0x0001 +#define INTR_EN0__ECC_ERR 0x0002 +#define INTR_EN0__DMA_CMD_COMP 0x0004 +#define INTR_EN0__TIME_OUT 0x0008 +#define INTR_EN0__PROGRAM_FAIL 0x0010 +#define INTR_EN0__ERASE_FAIL 0x0020 +#define INTR_EN0__LOAD_COMP 0x0040 +#define INTR_EN0__PROGRAM_COMP 0x0080 +#define INTR_EN0__ERASE_COMP 0x0100 +#define INTR_EN0__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_EN0__LOCKED_BLK 0x0400 +#define INTR_EN0__UNSUP_CMD 0x0800 +#define INTR_EN0__INT_ACT 0x1000 +#define INTR_EN0__RST_COMP 0x2000 +#define INTR_EN0__PIPE_CMD_ERR 0x4000 +#define INTR_EN0__PAGE_XFER_INC 0x8000 + +#define PAGE_CNT0 0x430 +#define PAGE_CNT0__VALUE 0x00ff + +#define ERR_PAGE_ADDR0 0x440 +#define ERR_PAGE_ADDR0__VALUE 0xffff + +#define ERR_BLOCK_ADDR0 0x450 +#define ERR_BLOCK_ADDR0__VALUE 0xffff + +#define INTR_STATUS1 0x460 +#define INTR_STATUS1__ECC_TRANSACTION_DONE 0x0001 +#define INTR_STATUS1__ECC_ERR 0x0002 +#define INTR_STATUS1__DMA_CMD_COMP 0x0004 +#define INTR_STATUS1__TIME_OUT 0x0008 +#define INTR_STATUS1__PROGRAM_FAIL 0x0010 +#define INTR_STATUS1__ERASE_FAIL 0x0020 +#define INTR_STATUS1__LOAD_COMP 0x0040 +#define INTR_STATUS1__PROGRAM_COMP 0x0080 +#define INTR_STATUS1__ERASE_COMP 0x0100 +#define INTR_STATUS1__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_STATUS1__LOCKED_BLK 0x0400 +#define INTR_STATUS1__UNSUP_CMD 0x0800 +#define INTR_STATUS1__INT_ACT 0x1000 +#define INTR_STATUS1__RST_COMP 0x2000 +#define INTR_STATUS1__PIPE_CMD_ERR 0x4000 +#define INTR_STATUS1__PAGE_XFER_INC 0x8000 + +#define INTR_EN1 0x470 +#define INTR_EN1__ECC_TRANSACTION_DONE 0x0001 +#define INTR_EN1__ECC_ERR 0x0002 +#define INTR_EN1__DMA_CMD_COMP 0x0004 +#define INTR_EN1__TIME_OUT 0x0008 +#define INTR_EN1__PROGRAM_FAIL 0x0010 +#define INTR_EN1__ERASE_FAIL 0x0020 +#define INTR_EN1__LOAD_COMP 0x0040 +#define INTR_EN1__PROGRAM_COMP 0x0080 +#define INTR_EN1__ERASE_COMP 0x0100 +#define INTR_EN1__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_EN1__LOCKED_BLK 0x0400 +#define INTR_EN1__UNSUP_CMD 0x0800 +#define INTR_EN1__INT_ACT 0x1000 +#define INTR_EN1__RST_COMP 0x2000 +#define INTR_EN1__PIPE_CMD_ERR 0x4000 +#define INTR_EN1__PAGE_XFER_INC 0x8000 + +#define PAGE_CNT1 0x480 +#define PAGE_CNT1__VALUE 0x00ff + +#define ERR_PAGE_ADDR1 0x490 +#define ERR_PAGE_ADDR1__VALUE 0xffff + +#define ERR_BLOCK_ADDR1 0x4a0 +#define ERR_BLOCK_ADDR1__VALUE 0xffff + +#define INTR_STATUS2 0x4b0 +#define INTR_STATUS2__ECC_TRANSACTION_DONE 0x0001 +#define INTR_STATUS2__ECC_ERR 0x0002 +#define INTR_STATUS2__DMA_CMD_COMP 0x0004 +#define INTR_STATUS2__TIME_OUT 0x0008 +#define INTR_STATUS2__PROGRAM_FAIL 0x0010 +#define INTR_STATUS2__ERASE_FAIL 0x0020 +#define INTR_STATUS2__LOAD_COMP 0x0040 +#define INTR_STATUS2__PROGRAM_COMP 0x0080 +#define INTR_STATUS2__ERASE_COMP 0x0100 +#define INTR_STATUS2__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_STATUS2__LOCKED_BLK 0x0400 +#define INTR_STATUS2__UNSUP_CMD 0x0800 +#define INTR_STATUS2__INT_ACT 0x1000 +#define INTR_STATUS2__RST_COMP 0x2000 +#define INTR_STATUS2__PIPE_CMD_ERR 0x4000 +#define INTR_STATUS2__PAGE_XFER_INC 0x8000 + +#define INTR_EN2 0x4c0 +#define INTR_EN2__ECC_TRANSACTION_DONE 0x0001 +#define INTR_EN2__ECC_ERR 0x0002 +#define INTR_EN2__DMA_CMD_COMP 0x0004 +#define INTR_EN2__TIME_OUT 0x0008 +#define INTR_EN2__PROGRAM_FAIL 0x0010 +#define INTR_EN2__ERASE_FAIL 0x0020 +#define INTR_EN2__LOAD_COMP 0x0040 +#define INTR_EN2__PROGRAM_COMP 0x0080 +#define INTR_EN2__ERASE_COMP 0x0100 +#define INTR_EN2__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_EN2__LOCKED_BLK 0x0400 +#define INTR_EN2__UNSUP_CMD 0x0800 +#define INTR_EN2__INT_ACT 0x1000 +#define INTR_EN2__RST_COMP 0x2000 +#define INTR_EN2__PIPE_CMD_ERR 0x4000 +#define INTR_EN2__PAGE_XFER_INC 0x8000 + +#define PAGE_CNT2 0x4d0 +#define PAGE_CNT2__VALUE 0x00ff + +#define ERR_PAGE_ADDR2 0x4e0 +#define ERR_PAGE_ADDR2__VALUE 0xffff + +#define ERR_BLOCK_ADDR2 0x4f0 +#define ERR_BLOCK_ADDR2__VALUE 0xffff + +#define INTR_STATUS3 0x500 +#define INTR_STATUS3__ECC_TRANSACTION_DONE 0x0001 +#define INTR_STATUS3__ECC_ERR 0x0002 +#define INTR_STATUS3__DMA_CMD_COMP 0x0004 +#define INTR_STATUS3__TIME_OUT 0x0008 +#define INTR_STATUS3__PROGRAM_FAIL 0x0010 +#define INTR_STATUS3__ERASE_FAIL 0x0020 +#define INTR_STATUS3__LOAD_COMP 0x0040 +#define INTR_STATUS3__PROGRAM_COMP 0x0080 +#define INTR_STATUS3__ERASE_COMP 0x0100 +#define INTR_STATUS3__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_STATUS3__LOCKED_BLK 0x0400 +#define INTR_STATUS3__UNSUP_CMD 0x0800 +#define INTR_STATUS3__INT_ACT 0x1000 +#define INTR_STATUS3__RST_COMP 0x2000 +#define INTR_STATUS3__PIPE_CMD_ERR 0x4000 +#define INTR_STATUS3__PAGE_XFER_INC 0x8000 + +#define INTR_EN3 0x510 +#define INTR_EN3__ECC_TRANSACTION_DONE 0x0001 +#define INTR_EN3__ECC_ERR 0x0002 +#define INTR_EN3__DMA_CMD_COMP 0x0004 +#define INTR_EN3__TIME_OUT 0x0008 +#define INTR_EN3__PROGRAM_FAIL 0x0010 +#define INTR_EN3__ERASE_FAIL 0x0020 +#define INTR_EN3__LOAD_COMP 0x0040 +#define INTR_EN3__PROGRAM_COMP 0x0080 +#define INTR_EN3__ERASE_COMP 0x0100 +#define INTR_EN3__PIPE_CPYBCK_CMD_COMP 0x0200 +#define INTR_EN3__LOCKED_BLK 0x0400 +#define INTR_EN3__UNSUP_CMD 0x0800 +#define INTR_EN3__INT_ACT 0x1000 +#define INTR_EN3__RST_COMP 0x2000 +#define INTR_EN3__PIPE_CMD_ERR 0x4000 +#define INTR_EN3__PAGE_XFER_INC 0x8000 + +#define PAGE_CNT3 0x520 +#define PAGE_CNT3__VALUE 0x00ff + +#define ERR_PAGE_ADDR3 0x530 +#define ERR_PAGE_ADDR3__VALUE 0xffff + +#define ERR_BLOCK_ADDR3 0x540 +#define ERR_BLOCK_ADDR3__VALUE 0xffff + +#define DATA_INTR 0x550 +#define DATA_INTR__WRITE_SPACE_AV 0x0001 +#define DATA_INTR__READ_DATA_AV 0x0002 + +#define DATA_INTR_EN 0x560 +#define DATA_INTR_EN__WRITE_SPACE_AV 0x0001 +#define DATA_INTR_EN__READ_DATA_AV 0x0002 + +#define GPREG_0 0x570 +#define GPREG_0__VALUE 0xffff + +#define GPREG_1 0x580 +#define GPREG_1__VALUE 0xffff + +#define GPREG_2 0x590 +#define GPREG_2__VALUE 0xffff + +#define GPREG_3 0x5a0 +#define GPREG_3__VALUE 0xffff + +#define ECC_THRESHOLD 0x600 +#define ECC_THRESHOLD__VALUE 0x03ff + +#define ECC_ERROR_BLOCK_ADDRESS 0x610 +#define ECC_ERROR_BLOCK_ADDRESS__VALUE 0xffff + +#define ECC_ERROR_PAGE_ADDRESS 0x620 +#define ECC_ERROR_PAGE_ADDRESS__VALUE 0x0fff +#define ECC_ERROR_PAGE_ADDRESS__BANK 0xf000 + +#define ECC_ERROR_ADDRESS 0x630 +#define ECC_ERROR_ADDRESS__OFFSET 0x0fff +#define ECC_ERROR_ADDRESS__SECTOR_NR 0xf000 + +#define ERR_CORRECTION_INFO 0x640 +#define ERR_CORRECTION_INFO__BYTEMASK 0x00ff +#define ERR_CORRECTION_INFO__DEVICE_NR 0x0f00 +#define ERR_CORRECTION_INFO__ERROR_TYPE 0x4000 +#define ERR_CORRECTION_INFO__LAST_ERR_INFO 0x8000 + +#define DMA_ENABLE 0x700 +#define DMA_ENABLE__FLAG 0x0001 + +#define IGNORE_ECC_DONE 0x710 +#define IGNORE_ECC_DONE__FLAG 0x0001 + +#define DMA_INTR 0x720 +#define DMA_INTR__TARGET_ERROR 0x0001 +#define DMA_INTR__DESC_COMP_CHANNEL0 0x0002 +#define DMA_INTR__DESC_COMP_CHANNEL1 0x0004 +#define DMA_INTR__DESC_COMP_CHANNEL2 0x0008 +#define DMA_INTR__DESC_COMP_CHANNEL3 0x0010 +#define DMA_INTR__MEMCOPY_DESC_COMP 0x0020 + +#define DMA_INTR_EN 0x730 +#define DMA_INTR_EN__TARGET_ERROR 0x0001 +#define DMA_INTR_EN__DESC_COMP_CHANNEL0 0x0002 +#define DMA_INTR_EN__DESC_COMP_CHANNEL1 0x0004 +#define DMA_INTR_EN__DESC_COMP_CHANNEL2 0x0008 +#define DMA_INTR_EN__DESC_COMP_CHANNEL3 0x0010 +#define DMA_INTR_EN__MEMCOPY_DESC_COMP 0x0020 + +#define TARGET_ERR_ADDR_LO 0x740 +#define TARGET_ERR_ADDR_LO__VALUE 0xffff + +#define TARGET_ERR_ADDR_HI 0x750 +#define TARGET_ERR_ADDR_HI__VALUE 0xffff + +#define CHNL_ACTIVE 0x760 +#define CHNL_ACTIVE__CHANNEL0 0x0001 +#define CHNL_ACTIVE__CHANNEL1 0x0002 +#define CHNL_ACTIVE__CHANNEL2 0x0004 +#define CHNL_ACTIVE__CHANNEL3 0x0008 + +#define ACTIVE_SRC_ID 0x800 +#define ACTIVE_SRC_ID__VALUE 0x00ff + +#define PTN_INTR 0x810 +#define PTN_INTR__CONFIG_ERROR 0x0001 +#define PTN_INTR__ACCESS_ERROR_BANK0 0x0002 +#define PTN_INTR__ACCESS_ERROR_BANK1 0x0004 +#define PTN_INTR__ACCESS_ERROR_BANK2 0x0008 +#define PTN_INTR__ACCESS_ERROR_BANK3 0x0010 +#define PTN_INTR__REG_ACCESS_ERROR 0x0020 + +#define PTN_INTR_EN 0x820 +#define PTN_INTR_EN__CONFIG_ERROR 0x0001 +#define PTN_INTR_EN__ACCESS_ERROR_BANK0 0x0002 +#define PTN_INTR_EN__ACCESS_ERROR_BANK1 0x0004 +#define PTN_INTR_EN__ACCESS_ERROR_BANK2 0x0008 +#define PTN_INTR_EN__ACCESS_ERROR_BANK3 0x0010 +#define PTN_INTR_EN__REG_ACCESS_ERROR 0x0020 + +#define PERM_SRC_ID_0 0x830 +#define PERM_SRC_ID_0__SRCID 0x00ff +#define PERM_SRC_ID_0__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_0__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_0__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_0__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_0 0x840 +#define MIN_BLK_ADDR_0__VALUE 0xffff + +#define MAX_BLK_ADDR_0 0x850 +#define MAX_BLK_ADDR_0__VALUE 0xffff + +#define MIN_MAX_BANK_0 0x860 +#define MIN_MAX_BANK_0__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_0__MAX_VALUE 0x000c + +#define PERM_SRC_ID_1 0x870 +#define PERM_SRC_ID_1__SRCID 0x00ff +#define PERM_SRC_ID_1__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_1__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_1__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_1__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_1 0x880 +#define MIN_BLK_ADDR_1__VALUE 0xffff + +#define MAX_BLK_ADDR_1 0x890 +#define MAX_BLK_ADDR_1__VALUE 0xffff + +#define MIN_MAX_BANK_1 0x8a0 +#define MIN_MAX_BANK_1__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_1__MAX_VALUE 0x000c + +#define PERM_SRC_ID_2 0x8b0 +#define PERM_SRC_ID_2__SRCID 0x00ff +#define PERM_SRC_ID_2__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_2__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_2__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_2__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_2 0x8c0 +#define MIN_BLK_ADDR_2__VALUE 0xffff + +#define MAX_BLK_ADDR_2 0x8d0 +#define MAX_BLK_ADDR_2__VALUE 0xffff + +#define MIN_MAX_BANK_2 0x8e0 +#define MIN_MAX_BANK_2__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_2__MAX_VALUE 0x000c + +#define PERM_SRC_ID_3 0x8f0 +#define PERM_SRC_ID_3__SRCID 0x00ff +#define PERM_SRC_ID_3__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_3__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_3__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_3__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_3 0x900 +#define MIN_BLK_ADDR_3__VALUE 0xffff + +#define MAX_BLK_ADDR_3 0x910 +#define MAX_BLK_ADDR_3__VALUE 0xffff + +#define MIN_MAX_BANK_3 0x920 +#define MIN_MAX_BANK_3__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_3__MAX_VALUE 0x000c + +#define PERM_SRC_ID_4 0x930 +#define PERM_SRC_ID_4__SRCID 0x00ff +#define PERM_SRC_ID_4__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_4__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_4__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_4__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_4 0x940 +#define MIN_BLK_ADDR_4__VALUE 0xffff + +#define MAX_BLK_ADDR_4 0x950 +#define MAX_BLK_ADDR_4__VALUE 0xffff + +#define MIN_MAX_BANK_4 0x960 +#define MIN_MAX_BANK_4__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_4__MAX_VALUE 0x000c + +#define PERM_SRC_ID_5 0x970 +#define PERM_SRC_ID_5__SRCID 0x00ff +#define PERM_SRC_ID_5__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_5__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_5__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_5__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_5 0x980 +#define MIN_BLK_ADDR_5__VALUE 0xffff + +#define MAX_BLK_ADDR_5 0x990 +#define MAX_BLK_ADDR_5__VALUE 0xffff + +#define MIN_MAX_BANK_5 0x9a0 +#define MIN_MAX_BANK_5__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_5__MAX_VALUE 0x000c + +#define PERM_SRC_ID_6 0x9b0 +#define PERM_SRC_ID_6__SRCID 0x00ff +#define PERM_SRC_ID_6__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_6__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_6__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_6__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_6 0x9c0 +#define MIN_BLK_ADDR_6__VALUE 0xffff + +#define MAX_BLK_ADDR_6 0x9d0 +#define MAX_BLK_ADDR_6__VALUE 0xffff + +#define MIN_MAX_BANK_6 0x9e0 +#define MIN_MAX_BANK_6__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_6__MAX_VALUE 0x000c + +#define PERM_SRC_ID_7 0x9f0 +#define PERM_SRC_ID_7__SRCID 0x00ff +#define PERM_SRC_ID_7__DIRECT_ACCESS_ACTIVE 0x0800 +#define PERM_SRC_ID_7__WRITE_ACTIVE 0x2000 +#define PERM_SRC_ID_7__READ_ACTIVE 0x4000 +#define PERM_SRC_ID_7__PARTITION_VALID 0x8000 + +#define MIN_BLK_ADDR_7 0xa00 +#define MIN_BLK_ADDR_7__VALUE 0xffff + +#define MAX_BLK_ADDR_7 0xa10 +#define MAX_BLK_ADDR_7__VALUE 0xffff + +#define MIN_MAX_BANK_7 0xa20 +#define MIN_MAX_BANK_7__MIN_VALUE 0x0003 +#define MIN_MAX_BANK_7__MAX_VALUE 0x000c + +/* flash.h */ +struct device_info_tag { + uint16_t wDeviceMaker; + uint16_t wDeviceID; + uint8_t bDeviceParam0; + uint8_t bDeviceParam1; + uint8_t bDeviceParam2; + uint32_t wDeviceType; + uint32_t wSpectraStartBlock; + uint32_t wSpectraEndBlock; + uint32_t wTotalBlocks; + uint16_t wPagesPerBlock; + uint16_t wPageSize; + uint16_t wPageDataSize; + uint16_t wPageSpareSize; + uint16_t wNumPageSpareFlag; + uint16_t wECCBytesPerSector; + uint32_t wBlockSize; + uint32_t wBlockDataSize; + uint32_t wDataBlockNum; + uint8_t bPlaneNum; + uint16_t wDeviceMainAreaSize; + uint16_t wDeviceSpareAreaSize; + uint16_t wDevicesConnected; + uint16_t wDeviceWidth; + uint16_t wHWRevision; + uint16_t wHWFeatures; + + uint16_t wONFIDevFeatures; + uint16_t wONFIOptCommands; + uint16_t wONFITimingMode; + uint16_t wONFIPgmCacheTimingMode; + + uint16_t MLCDevice; + uint16_t wSpareSkipBytes; + + uint8_t nBitsInPageNumber; + uint8_t nBitsInPageDataSize; + uint8_t nBitsInBlockDataSize; +}; + +/* ffsdefs.h */ +#define CLEAR 0 /*use this to clear a field instead of "fail"*/ +#define SET 1 /*use this to set a field instead of "pass"*/ +#define FAIL 1 /*failed flag*/ +#define PASS 0 /*success flag*/ +#define ERR -1 /*error flag*/ + +/* lld.h */ +#define GOOD_BLOCK 0 +#define DEFECTIVE_BLOCK 1 +#define READ_ERROR 2 + +#define CLK_X 5 +#define CLK_MULTI 4 + +/* ffsport.h */ +#define VERBOSE 1 + +#define NAND_DBG_WARN 1 +#define NAND_DBG_DEBUG 2 +#define NAND_DBG_TRACE 3 + +#ifdef VERBOSE +#define nand_dbg_print(level, args...) \ + do { \ + if (level <= nand_debug_level) \ + printk(KERN_ALERT args); \ + } while (0) +#else +#define nand_dbg_print(level, args...) +#endif + + +/* spectraswconfig.h */ +#define CMD_DMA 0 + +#define SPECTRA_PARTITION_ID 0 +/**** Block Table and Reserved Block Parameters *****/ +#define SPECTRA_START_BLOCK 3 +#define NUM_FREE_BLOCKS_GATE 30 + +/* KBV - Updated to LNW scratch register address */ +#define SCRATCH_REG_ADDR CONFIG_MTD_NAND_DENALI_SCRATCH_REG_ADDR +#define SCRATCH_REG_SIZE 64 + +#define GLOB_HWCTL_DEFAULT_BLKS 2048 + +#define SUPPORT_15BITECC 1 +#define SUPPORT_8BITECC 1 + +#define CUSTOM_CONF_PARAMS 0 + +#define ONFI_BLOOM_TIME 1 +#define MODE5_WORKAROUND 0 + +/* lld_nand.h */ +/* + * NAND Flash Controller Device Driver + * Copyright (c) 2009, Intel Corporation and its suppliers. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#ifndef _LLD_NAND_ +#define _LLD_NAND_ + +#define MODE_00 0x00000000 +#define MODE_01 0x04000000 +#define MODE_10 0x08000000 +#define MODE_11 0x0C000000 + + +#define DATA_TRANSFER_MODE 0 +#define PROTECTION_PER_BLOCK 1 +#define LOAD_WAIT_COUNT 2 +#define PROGRAM_WAIT_COUNT 3 +#define ERASE_WAIT_COUNT 4 +#define INT_MONITOR_CYCLE_COUNT 5 +#define READ_BUSY_PIN_ENABLED 6 +#define MULTIPLANE_OPERATION_SUPPORT 7 +#define PRE_FETCH_MODE 8 +#define CE_DONT_CARE_SUPPORT 9 +#define COPYBACK_SUPPORT 10 +#define CACHE_WRITE_SUPPORT 11 +#define CACHE_READ_SUPPORT 12 +#define NUM_PAGES_IN_BLOCK 13 +#define ECC_ENABLE_SELECT 14 +#define WRITE_ENABLE_2_READ_ENABLE 15 +#define ADDRESS_2_DATA 16 +#define READ_ENABLE_2_WRITE_ENABLE 17 +#define TWO_ROW_ADDRESS_CYCLES 18 +#define MULTIPLANE_ADDRESS_RESTRICT 19 +#define ACC_CLOCKS 20 +#define READ_WRITE_ENABLE_LOW_COUNT 21 +#define READ_WRITE_ENABLE_HIGH_COUNT 22 + +#define ECC_SECTOR_SIZE 512 +#define LLD_MAX_FLASH_BANKS 4 + +#define DENALI_BUF_SIZE NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE + +struct nand_buf +{ + int head; + int tail; + uint8_t buf[DENALI_BUF_SIZE]; + dma_addr_t dma_buf; +}; + +#define INTEL_CE4100 1 +#define INTEL_MRST 2 + +struct denali_nand_info { + struct mtd_info mtd; + struct nand_chip nand; + struct device_info_tag dev_info; + int flash_bank; /* currently selected chip */ + int status; + int platform; + struct nand_buf buf; + struct pci_dev *dev; + int total_used_banks; + uint32_t block; /* stored for future use */ + uint16_t page; + void __iomem *flash_reg; /* Mapped io reg base address */ + void __iomem *flash_mem; /* Mapped io reg base address */ + + /* elements used by ISR */ + struct completion complete; + spinlock_t irq_lock; + uint32_t irq_status; + int irq_debug_array[32]; + int idx; +}; + +static uint16_t NAND_Flash_Reset(struct denali_nand_info *denali); +static uint16_t NAND_Read_Device_ID(struct denali_nand_info *denali); +static void NAND_LLD_Enable_Disable_Interrupts(struct denali_nand_info *denali, uint16_t INT_ENABLE); + +#endif /*_LLD_NAND_*/ + -- cgit v1.2.3-58-ga151 From aadff49c56f921d18cc280cbf087a550c67bbd02 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 13 May 2010 16:12:43 +0100 Subject: mtd/nand: Fix denali build on ppc64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drivers/mtd/nand/denali.c:1427: error: conflicting types for ‘enable_dma’ arch/powerpc/include/asm/dma.h:189: note: previous definition of ‘enable_dma’ was here Signed-off-by: David Woodhouse --- drivers/mtd/nand/denali.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 8a6ce0dd9537..ca03428b59cc 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1424,7 +1424,7 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf, } /* programs the controller to either enable/disable DMA transfers */ -static void enable_dma(struct denali_nand_info *denali, bool en) +static void denali_enable_dma(struct denali_nand_info *denali, bool en) { uint32_t reg_val = 0x0; @@ -1435,7 +1435,7 @@ static void enable_dma(struct denali_nand_info *denali, bool en) } /* setups the HW to perform the data DMA */ -static void setup_dma(struct denali_nand_info *denali, int op) +static void denali_setup_dma(struct denali_nand_info *denali, int op) { uint32_t mode = 0x0; const int page_count = 1; @@ -1494,9 +1494,9 @@ static void write_page(struct mtd_info *mtd, struct nand_chip *chip, pci_dma_sync_single_for_device(pci_dev, addr, size, PCI_DMA_TODEVICE); clear_interrupts(denali); - enable_dma(denali, true); + denali_enable_dma(denali, true); - setup_dma(denali, DENALI_WRITE); + denali_setup_dma(denali, DENALI_WRITE); /* wait for operation to complete */ irq_status = wait_for_irq(denali, irq_mask); @@ -1509,7 +1509,7 @@ static void write_page(struct mtd_info *mtd, struct nand_chip *chip, PASS; } - enable_dma(denali, false); + denali_enable_dma(denali, false); pci_dma_sync_single_for_cpu(pci_dev, addr, size, PCI_DMA_TODEVICE); } @@ -1569,11 +1569,11 @@ static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip, setup_ecc_for_xfer(denali, true, false); - enable_dma(denali, true); + denali_enable_dma(denali, true); pci_dma_sync_single_for_device(pci_dev, addr, size, PCI_DMA_FROMDEVICE); clear_interrupts(denali); - setup_dma(denali, DENALI_READ); + denali_setup_dma(denali, DENALI_READ); /* wait for operation to complete */ irq_status = wait_for_irq(denali, irq_mask); @@ -1583,7 +1583,7 @@ static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip, memcpy(buf, denali->buf.buf, mtd->writesize); check_erased_page = handle_ecc(denali, buf, chip->oob_poi, irq_status); - enable_dma(denali, false); + denali_enable_dma(denali, false); if (check_erased_page) { @@ -1618,19 +1618,19 @@ static int denali_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, uint32_t irq_mask = INTR_STATUS0__DMA_CMD_COMP; setup_ecc_for_xfer(denali, false, true); - enable_dma(denali, true); + denali_enable_dma(denali, true); pci_dma_sync_single_for_device(pci_dev, addr, size, PCI_DMA_FROMDEVICE); clear_interrupts(denali); - setup_dma(denali, DENALI_READ); + denali_setup_dma(denali, DENALI_READ); /* wait for operation to complete */ irq_status = wait_for_irq(denali, irq_mask); pci_dma_sync_single_for_cpu(pci_dev, addr, size, PCI_DMA_FROMDEVICE); - enable_dma(denali, false); + denali_enable_dma(denali, false); memcpy(buf, denali->buf.buf, mtd->writesize); memcpy(chip->oob_poi, denali->buf.buf + mtd->writesize, mtd->oobsize); -- cgit v1.2.3-58-ga151 From ecce2a6f9bdc7635838baeff8a09a76c9a70e7e0 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 13 May 2010 22:07:46 +0200 Subject: drivers/mtd/nand: Use kzalloc Use kzalloc rather than the combination of kmalloc and memset. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // Signed-off-by: Julia Lawall Signed-off-by: David Woodhouse --- drivers/mtd/nand/s3c2410.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index dc02dcd0c08f..239aadfd01b0 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -929,14 +929,13 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) pr_debug("s3c2410_nand_probe(%p)\n", pdev); - info = kmalloc(sizeof(*info), GFP_KERNEL); + info = kzalloc(sizeof(*info), GFP_KERNEL); if (info == NULL) { dev_err(&pdev->dev, "no memory for flash info\n"); err = -ENOMEM; goto exit_error; } - memset(info, 0, sizeof(*info)); platform_set_drvdata(pdev, info); spin_lock_init(&info->controller.lock); @@ -994,15 +993,13 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) /* allocate our information */ size = nr_sets * sizeof(*info->mtds); - info->mtds = kmalloc(size, GFP_KERNEL); + info->mtds = kzalloc(size, GFP_KERNEL); if (info->mtds == NULL) { dev_err(&pdev->dev, "failed to allocate mtd storage\n"); err = -ENOMEM; goto exit_error; } - memset(info->mtds, 0, size); - /* initialise all possible chips */ nmtd = info->mtds; -- cgit v1.2.3-58-ga151 From d484018056816178abffacb84b8c16628e880c83 Mon Sep 17 00:00:00 2001 From: Ivo Clarysse Date: Thu, 8 Apr 2010 16:14:44 +0200 Subject: mtd: mxc_nand: set NFC registers after reset This patch allows the mxc_nand driver to reset the NAND flash controller. NFC registers are (re-)set after completion of the reset, as a reset will have reverted the NFC registers to their default values. Signed-off-by: Ivo Clarysse Acked-by: Sascha Hauer Signed-off-by: David Woodhouse --- drivers/mtd/nand/mxc_nand.c | 90 ++++++++++++++++++++++++--------------------- 1 file changed, 48 insertions(+), 42 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 2ba3be1f4937..b527aa2d687d 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -542,6 +542,41 @@ static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr) } } +static void preset(struct mtd_info *mtd) +{ + struct nand_chip *nand_chip = mtd->priv; + struct mxc_nand_host *host = nand_chip->priv; + uint16_t tmp; + + /* disable interrupt, disable spare enable */ + tmp = readw(host->regs + NFC_CONFIG1); + tmp |= NFC_INT_MSK; + tmp &= ~NFC_SP_EN; + if (nand_chip->ecc.mode == NAND_ECC_HW) { + tmp |= NFC_ECC_EN; + } else { + tmp &= ~NFC_ECC_EN; + } + writew(tmp, host->regs + NFC_CONFIG1); + /* preset operation */ + + /* Unlock the internal RAM Buffer */ + writew(0x2, host->regs + NFC_CONFIG); + + /* Blocks to be unlocked */ + if (nfc_is_v21()) { + writew(0x0, host->regs + NFC_V21_UNLOCKSTART_BLKADDR); + writew(0xffff, host->regs + NFC_V21_UNLOCKEND_BLKADDR); + } else if (nfc_is_v1()) { + writew(0x0, host->regs + NFC_V1_UNLOCKSTART_BLKADDR); + writew(0x4000, host->regs + NFC_V1_UNLOCKEND_BLKADDR); + } else + BUG(); + + /* Unlock Block Command for given address range */ + writew(0x4, host->regs + NFC_WRPROT); +} + /* Used by the upper layer to write command to NAND Flash for * different operations to be carried out on NAND Flash */ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, @@ -559,6 +594,10 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, /* Command pre-processing step */ switch (command) { + case NAND_CMD_RESET: + send_cmd(host, command, false); + preset(mtd); + break; case NAND_CMD_STATUS: host->buf_start = 0; @@ -680,7 +719,6 @@ static int __init mxcnd_probe(struct platform_device *pdev) struct mxc_nand_platform_data *pdata = pdev->dev.platform_data; struct mxc_nand_host *host; struct resource *res; - uint16_t tmp; int err = 0, nr_parts = 0; struct nand_ecclayout *oob_smallpage, *oob_largepage; @@ -744,51 +782,17 @@ static int __init mxcnd_probe(struct platform_device *pdev) host->spare_len = 64; oob_smallpage = &nandv2_hw_eccoob_smallpage; oob_largepage = &nandv2_hw_eccoob_largepage; + this->ecc.bytes = 9; } else if (nfc_is_v1()) { host->regs = host->base; host->spare0 = host->base + 0x800; host->spare_len = 16; oob_smallpage = &nandv1_hw_eccoob_smallpage; oob_largepage = &nandv1_hw_eccoob_largepage; - } else - BUG(); - - /* disable interrupt and spare enable */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp |= NFC_INT_MSK; - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - - init_waitqueue_head(&host->irq_waitq); - - host->irq = platform_get_irq(pdev, 0); - - err = request_irq(host->irq, mxc_nfc_irq, 0, DRIVER_NAME, host); - if (err) - goto eirq; - - /* Reset NAND */ - this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); - - /* preset operation */ - /* Unlock the internal RAM Buffer */ - writew(0x2, host->regs + NFC_CONFIG); - - /* Blocks to be unlocked */ - if (nfc_is_v21()) { - writew(0x0, host->regs + NFC_V21_UNLOCKSTART_BLKADDR); - writew(0xffff, host->regs + NFC_V21_UNLOCKEND_BLKADDR); - this->ecc.bytes = 9; - } else if (nfc_is_v1()) { - writew(0x0, host->regs + NFC_V1_UNLOCKSTART_BLKADDR); - writew(0x4000, host->regs + NFC_V1_UNLOCKEND_BLKADDR); this->ecc.bytes = 3; } else BUG(); - /* Unlock Block Command for given address range */ - writew(0x4, host->regs + NFC_WRPROT); - this->ecc.size = 512; this->ecc.layout = oob_smallpage; @@ -797,14 +801,8 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->ecc.hwctl = mxc_nand_enable_hwecc; this->ecc.correct = mxc_nand_correct_data; this->ecc.mode = NAND_ECC_HW; - tmp = readw(host->regs + NFC_CONFIG1); - tmp |= NFC_ECC_EN; - writew(tmp, host->regs + NFC_CONFIG1); } else { this->ecc.mode = NAND_ECC_SOFT; - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_ECC_EN; - writew(tmp, host->regs + NFC_CONFIG1); } /* NAND bus width determines access funtions used by upper layer */ @@ -818,6 +816,14 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->options |= NAND_USE_FLASH_BBT; } + init_waitqueue_head(&host->irq_waitq); + + host->irq = platform_get_irq(pdev, 0); + + err = request_irq(host->irq, mxc_nfc_irq, 0, DRIVER_NAME, host); + if (err) + goto eirq; + /* first scan to find the device and get the page size */ if (nand_scan_ident(mtd, 1, NULL)) { err = -ENXIO; -- cgit v1.2.3-58-ga151 From a47bfd2eb66837653dc3b42541dfe4283dd41251 Mon Sep 17 00:00:00 2001 From: Ivo Clarysse Date: Thu, 8 Apr 2010 16:16:51 +0200 Subject: mtd: mxc_nand: support i.MX21 On i.MX21 SoCs, if the NFC_CONFIG1:NFC_INT_MASK bit is set, NFC_CONFIG2:NFC_INT always reads out zero, even if an operation is completed. This patch uses enable_irq and disable_irq_nosync instead of NFC_CONFIG1:NFC_INT_MASK to mask NFC interrupts. This allows NFC_CONFIG2:NFC_INT to also be used to detect operation completion on i.MX21. The i.MX21 NFC does not signal reset completion using NFC_CONFIG1:NFC_INT_MASK, so instead reset completion is tested by checking if NFC_CONFIG2 becomes 0. Signed-off-by: Ivo Clarysse Acked-by: Sascha Hauer Signed-off-by: David Woodhouse --- drivers/mtd/nand/mxc_nand.c | 41 +++++++++++++++++++++++++---------------- 1 file changed, 25 insertions(+), 16 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index b527aa2d687d..35da3dc4bd17 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -38,7 +38,7 @@ #define DRIVER_NAME "mxc_nand" #define nfc_is_v21() (cpu_is_mx25() || cpu_is_mx35()) -#define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27()) +#define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27() || cpu_is_mx21()) /* Addresses for NFC registers */ #define NFC_BUF_SIZE 0xE00 @@ -168,11 +168,7 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) { struct mxc_nand_host *host = dev_id; - uint16_t tmp; - - tmp = readw(host->regs + NFC_CONFIG1); - tmp |= NFC_INT_MSK; /* Disable interrupt */ - writew(tmp, host->regs + NFC_CONFIG1); + disable_irq_nosync(irq); wake_up(&host->irq_waitq); @@ -184,15 +180,13 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) */ static void wait_op_done(struct mxc_nand_host *host, int useirq) { - uint32_t tmp; - int max_retries = 2000; + uint16_t tmp; + int max_retries = 8000; if (useirq) { if ((readw(host->regs + NFC_CONFIG2) & NFC_INT) == 0) { - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_INT_MSK; /* Enable interrupt */ - writew(tmp, host->regs + NFC_CONFIG1); + enable_irq(host->irq); wait_event(host->irq_waitq, readw(host->regs + NFC_CONFIG2) & NFC_INT); @@ -226,8 +220,23 @@ static void send_cmd(struct mxc_nand_host *host, uint16_t cmd, int useirq) writew(cmd, host->regs + NFC_FLASH_CMD); writew(NFC_CMD, host->regs + NFC_CONFIG2); - /* Wait for operation to complete */ - wait_op_done(host, useirq); + if (cpu_is_mx21() && (cmd == NAND_CMD_RESET)) { + int max_retries = 100; + /* Reset completion is indicated by NFC_CONFIG2 */ + /* being set to 0 */ + while (max_retries-- > 0) { + if (readw(host->regs + NFC_CONFIG2) == 0) { + break; + } + udelay(1); + } + if (max_retries < 0) + DEBUG(MTD_DEBUG_LEVEL0, "%s: RESET failed\n", + __func__); + } else { + /* Wait for operation to complete */ + wait_op_done(host, useirq); + } } /* This function sends an address (or partial address) to the @@ -548,9 +557,9 @@ static void preset(struct mtd_info *mtd) struct mxc_nand_host *host = nand_chip->priv; uint16_t tmp; - /* disable interrupt, disable spare enable */ + /* enable interrupt, disable spare enable */ tmp = readw(host->regs + NFC_CONFIG1); - tmp |= NFC_INT_MSK; + tmp &= ~NFC_INT_MSK; tmp &= ~NFC_SP_EN; if (nand_chip->ecc.mode == NAND_ECC_HW) { tmp |= NFC_ECC_EN; @@ -820,7 +829,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) host->irq = platform_get_irq(pdev, 0); - err = request_irq(host->irq, mxc_nfc_irq, 0, DRIVER_NAME, host); + err = request_irq(host->irq, mxc_nfc_irq, IRQF_DISABLED, DRIVER_NAME, host); if (err) goto eirq; -- cgit v1.2.3-58-ga151 From c3611570ddf601609f8803574ea83889ff969aa0 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 19 Apr 2010 18:20:41 +0300 Subject: mtd: sm_common: split smartmedia and xD table 2GB xD card, and 4MB SmartMedia ROM card share same ID, so to make both work split xD and smartmedia ID tables. Hardware driver must be able to know which type it handles (and probably just one). Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 2 +- drivers/mtd/nand/sm_common.c | 37 +++++++++++++++++++++---------------- drivers/mtd/nand/sm_common.h | 2 +- 3 files changed, 23 insertions(+), 18 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 96bfbd8e8fdb..6dfbb4713162 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -666,7 +666,7 @@ int r852_register_nand_device(struct r852_device *dev) r852_engine_enable(dev); - if (sm_register_device(dev->mtd)) + if (sm_register_device(dev->mtd, dev->sm)) goto error2; if (device_create_file(&dev->mtd->dev, &dev_attr_media_type)) diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c index aae0b9acd7ae..ac80fb362e63 100644 --- a/drivers/mtd/nand/sm_common.c +++ b/drivers/mtd/nand/sm_common.c @@ -68,8 +68,6 @@ static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) static struct nand_flash_dev nand_smartmedia_flash_ids[] = { - - /* SmartMedia */ {"SmartMedia 1MiB 5V", 0x6e, 256, 1, 0x1000, 0}, {"SmartMedia 1MiB 3,3V", 0xe8, 256, 1, 0x1000, 0}, {"SmartMedia 1MiB 3,3V", 0xec, 256, 1, 0x1000, 0}, @@ -82,28 +80,34 @@ static struct nand_flash_dev nand_smartmedia_flash_ids[] = { {"SmartMedia 4MiB 3,3V ROM", 0xd5, 512, 4, 0x2000, NAND_ROM}, {"SmartMedia 8MiB 3,3V", 0xe6, 512, 8, 0x2000, 0}, {"SmartMedia 8MiB 3,3V ROM", 0xd6, 512, 8, 0x2000, NAND_ROM}, - -#define XD_TYPEM (NAND_NO_AUTOINCR | NAND_BROKEN_XD) - /* xD / SmartMedia */ - {"SmartMedia/xD 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0}, + {"SmartMedia 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0}, {"SmartMedia 16MiB 3,3V ROM", 0x57, 512, 16, 0x4000, NAND_ROM}, - {"SmartMedia/xD 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0}, + {"SmartMedia 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0}, {"SmartMedia 32MiB 3,3V ROM", 0x58, 512, 32, 0x4000, NAND_ROM}, - {"SmartMedia/xD 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0}, + {"SmartMedia 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0}, {"SmartMedia 64MiB 3,3V ROM", 0xd9, 512, 64, 0x4000, NAND_ROM}, - {"SmartMedia/xD 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0}, + {"SmartMedia 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0}, {"SmartMedia 128MiB 3,3V ROM", 0xda, 512, 128, 0x4000, NAND_ROM}, - {"SmartMedia/xD 256MiB 3,3V", 0x71, 512, 256, 0x4000, XD_TYPEM}, + {"SmartMedia 256MiB 3,3V", 0x71, 512, 256, 0x4000 }, {"SmartMedia 256MiB 3,3V ROM", 0x5b, 512, 256, 0x4000, NAND_ROM}, + {NULL,} +}; - /* xD only */ - {"xD 512MiB 3,3V", 0xDC, 512, 512, 0x4000, XD_TYPEM}, - {"xD 1GiB 3,3V", 0xD3, 512, 1024, 0x4000, XD_TYPEM}, - {"xD 2GiB 3,3V", 0xD5, 512, 2048, 0x4000, XD_TYPEM}, +#define XD_TYPEM (NAND_NO_AUTOINCR | NAND_BROKEN_XD) +static struct nand_flash_dev nand_xd_flash_ids[] = { + + {"xD 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0}, + {"xD 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0}, + {"xD 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0}, + {"xD 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0}, + {"xD 256MiB 3,3V", 0x71, 512, 256, 0x4000, XD_TYPEM}, + {"xD 512MiB 3,3V", 0xdc, 512, 512, 0x4000, XD_TYPEM}, + {"xD 1GiB 3,3V", 0xd3, 512, 1024, 0x4000, XD_TYPEM}, + {"xD 2GiB 3,3V", 0xd5, 512, 2048, 0x4000, XD_TYPEM}, {NULL,} }; -int sm_register_device(struct mtd_info *mtd) +int sm_register_device(struct mtd_info *mtd, int smartmedia) { struct nand_chip *chip = (struct nand_chip *)mtd->priv; int ret; @@ -111,7 +115,8 @@ int sm_register_device(struct mtd_info *mtd) chip->options |= NAND_SKIP_BBTSCAN; /* Scan for card properties */ - ret = nand_scan_ident(mtd, 1, nand_smartmedia_flash_ids); + ret = nand_scan_ident(mtd, 1, smartmedia ? + nand_smartmedia_flash_ids : nand_xd_flash_ids); if (ret) return ret; diff --git a/drivers/mtd/nand/sm_common.h b/drivers/mtd/nand/sm_common.h index 18284f5fae64..00f4a83359b2 100644 --- a/drivers/mtd/nand/sm_common.h +++ b/drivers/mtd/nand/sm_common.h @@ -36,7 +36,7 @@ struct sm_oob { #define SM_SMALL_OOB_SIZE 8 -extern int sm_register_device(struct mtd_info *mtd); +extern int sm_register_device(struct mtd_info *mtd, int smartmedia); static inline int sm_sector_valid(struct sm_oob *oob) -- cgit v1.2.3-58-ga151 From eedfea252690435858722a8da1109d104d639087 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 20 Apr 2010 10:26:18 +0100 Subject: mtd: orion/kirkwood: add RnB line support to orion mtd driver Add support for a board to register a callback to get the state of the RnB line if it has it attached. Signed-off-by: Ben Dooks Signed-off-by: David Woodhouse --- arch/arm/plat-orion/include/plat/orion_nand.h | 1 + drivers/mtd/nand/orion_nand.c | 3 +++ 2 files changed, 4 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/arch/arm/plat-orion/include/plat/orion_nand.h b/arch/arm/plat-orion/include/plat/orion_nand.h index d6a4cfa37785..9f3c180834d1 100644 --- a/arch/arm/plat-orion/include/plat/orion_nand.h +++ b/arch/arm/plat-orion/include/plat/orion_nand.h @@ -14,6 +14,7 @@ */ struct orion_nand_data { struct mtd_partition *parts; + int (*dev_ready)(struct mtd_info *mtd); u32 nr_parts; u8 ale; /* address line number connected to ALE */ u8 cle; /* address line number connected to CLE */ diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index f4444fe960a1..da6e75343052 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -126,6 +126,9 @@ static int __init orion_nand_probe(struct platform_device *pdev) if (board->width == 16) nc->options |= NAND_BUSWIDTH_16; + if (board->dev_ready) + nc->dev_ready = board->dev_ready; + platform_set_drvdata(pdev, mtd); if (nand_scan(mtd, 1)) { -- cgit v1.2.3-58-ga151 From 426c457a3216fac74e3d44dd39729b0689f4c7ab Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Tue, 4 May 2010 20:58:03 -0700 Subject: mtd: nand: extend NAND flash detection to new MLC chips Some of the newer MLC devices have a 6-byte ID sequence in which several field definitions differ from older chips in a manner that is not backward compatible. For instance: Samsung K9GAG08U0M (5-byte sequence): ec d5 14 b6 74 4th byte, bits 1:0 encode the page size: 0=1KiB, 1=2KiB, 2=4KiB, 3=8KiB 4th byte, bits 5:4 encode the block size: 0=64KiB, 1=128KiB, ... 4th byte, bit 6 encodes the OOB size: 0=8B/512B, 1=16B/512B Samsung K9GAG08U0D (6-byte sequence): ec d5 94 29 34 41 4th byte, bits 1:0 encode the page size: 0=2KiB, 1=4KiB, 3=8KiB, 4=rsvd 4th byte, bits 7;5:4 encode the block size: 0=128KiB, 1=256KiB, ... 4th byte, bits 6;3:2 encode the OOB size: 1=128B/page, 2=218B/page This patch uses the new 6-byte scheme if the following conditions are all true: 1) The ID code wraps around after exactly 6 bytes 2) Manufacturer is Samsung 3) 6th byte is zero The patch also extends the maximum OOB size from 128B to 256B. Signed-off-by: Kevin Cernekee Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 64 ++++++++++++++++++++++++++++++-------------- include/linux/mtd/nand.h | 2 +- 2 files changed, 45 insertions(+), 21 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index b9dc65c7253c..85891dcc27ad 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2774,8 +2774,8 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, int busw, int *maf_id, struct nand_flash_dev *type) { - int dev_id, maf_idx; - int tmp_id, tmp_manf; + int i, dev_id, maf_idx; + u8 id_data[8]; /* Select the device */ chip->select_chip(mtd, 0); @@ -2801,15 +2801,15 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); - /* Read manufacturer and device IDs */ + /* Read entire ID string */ - tmp_manf = chip->read_byte(mtd); - tmp_id = chip->read_byte(mtd); + for (i = 0; i < 8; i++) + id_data[i] = chip->read_byte(mtd); - if (tmp_manf != *maf_id || tmp_id != dev_id) { + if (id_data[0] != *maf_id || id_data[1] != dev_id) { printk(KERN_INFO "%s: second ID read did not match " "%02x,%02x against %02x,%02x\n", __func__, - *maf_id, dev_id, tmp_manf, tmp_id); + *maf_id, dev_id, id_data[0], id_data[1]); return ERR_PTR(-ENODEV); } @@ -2832,21 +2832,45 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, if (!type->pagesize) { int extid; /* The 3rd id byte holds MLC / multichip data */ - chip->cellinfo = chip->read_byte(mtd); + chip->cellinfo = id_data[2]; /* The 4th id byte is the important one */ - extid = chip->read_byte(mtd); - /* Calc pagesize */ - mtd->writesize = 1024 << (extid & 0x3); - extid >>= 2; - /* Calc oobsize */ - mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9); - extid >>= 2; - /* Calc blocksize. Blocksize is multiples of 64KiB */ - mtd->erasesize = (64 * 1024) << (extid & 0x03); - extid >>= 2; - /* Get buswidth information */ - busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; + extid = id_data[3]; + /* + * Field definitions are in the following datasheets: + * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32) + * New style (6 byte ID): Samsung K9GAG08U0D (p.40) + * + * Check for wraparound + Samsung ID + nonzero 6th byte + * to decide what to do. + */ + if (id_data[0] == id_data[6] && id_data[1] == id_data[7] && + id_data[0] == NAND_MFR_SAMSUNG && + id_data[5] != 0x00) { + /* Calc pagesize */ + mtd->writesize = 2048 << (extid & 0x03); + extid >>= 2; + /* Calc oobsize */ + mtd->oobsize = (extid & 0x03) == 0x01 ? 128 : 218; + extid >>= 2; + /* Calc blocksize */ + mtd->erasesize = (128 * 1024) << + (((extid >> 1) & 0x04) | (extid & 0x03)); + busw = 0; + } else { + /* Calc pagesize */ + mtd->writesize = 1024 << (extid & 0x03); + extid >>= 2; + /* Calc oobsize */ + mtd->oobsize = (8 << (extid & 0x01)) * + (mtd->writesize >> 9); + extid >>= 2; + /* Calc blocksize. Blocksize is multiples of 64KiB */ + mtd->erasesize = (64 * 1024) << (extid & 0x03); + extid >>= 2; + /* Get buswidth information */ + busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; + } } else { /* * Old devices have chip data hardcoded in the device id table diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8bdacb885f90..50f3aa00a452 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -53,7 +53,7 @@ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); * is supported now. If you add a chip with bigger oobsize/page * adjust this accordingly. */ -#define NAND_MAX_OOBSIZE 128 +#define NAND_MAX_OOBSIZE 256 #define NAND_MAX_PAGESIZE 4096 /* -- cgit v1.2.3-58-ga151 From b60b08b02ca8d9575985ae6711bd656dd67e9039 Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Tue, 4 May 2010 20:58:10 -0700 Subject: mtd: nand: support alternate BB marker locations on MLC This is a slightly modified version of a patch submitted last year by Reuben Dowle . His original comments follow: This patch adds support for some MLC NAND flashes that place the BB marker in the LAST page of the bad block rather than the FIRST page used for SLC NAND and other types of MLC nand. Lifted from Samsung datasheet for K9LG8G08U0A (1Gbyte MLC NAND): " Identifying Initial Invalid Block(s) All device locations are erased(FFh) except locations where the initial invalid block(s) information is written prior to shipping. The initial invalid block(s) status is defined by the 1st byte in the spare area. Samsung makes sure that the last page of every initial invalid block has non-FFh data at the column address of 2,048. ... " As far as I can tell, this is the same for all Samsung MLC nand, and in fact the samsung bsp for the processor used in our project (s3c6410) actually contained a hack similar to this patch but less portable to enable use of their NAND parts. I discovered this problem when trying to use a Micron NAND which does not used this layout - I wish samsung would put their stuff in main-line to avoid this type of problem. Currently this patch causes all MLC nand with manufacturer codes from Samsung and ST(Numonyx) to use this alternative location, since these are the manufactures that I know of that use this layout. Signed-off-by: Kevin Cernekee Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 15 +++++++++++++++ drivers/mtd/nand/nand_bbt.c | 3 +++ include/linux/mtd/nand.h | 2 ++ 3 files changed, 20 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 85891dcc27ad..4a7b86423ee9 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -347,6 +347,9 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) struct nand_chip *chip = mtd->priv; u16 bad; + if (chip->options & NAND_BB_LAST_PAGE) + ofs += mtd->erasesize - mtd->writesize; + page = (int)(ofs >> chip->page_shift) & chip->pagemask; if (getchip) { @@ -396,6 +399,9 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) uint8_t buf[2] = { 0, 0 }; int block, ret; + if (chip->options & NAND_BB_LAST_PAGE) + ofs += mtd->erasesize - mtd->writesize; + /* Get block number */ block = (int)(ofs >> chip->bbt_erase_shift); if (chip->bbt) @@ -2933,6 +2939,15 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize) chip->options &= ~NAND_SAMSUNG_LP_OPTIONS; + /* + * Bad block marker is stored in the last page of each block + * on Samsung and Hynix MLC devices + */ + if ((chip->cellinfo & NAND_CI_CELLTYPE_MSK) && + (*maf_id == NAND_MFR_SAMSUNG || + *maf_id == NAND_MFR_HYNIX)) + chip->options |= NAND_BB_LAST_PAGE; + /* Check for AND chips with 4 page planes */ if (chip->options & NAND_4PAGE_ARRAY) chip->erase_cmd = multi_erase_cmd; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 387c45c366fe..ad97c0ce73b2 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -432,6 +432,9 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, from = (loff_t)startblock << (this->bbt_erase_shift - 1); } + if (this->options & NAND_BB_LAST_PAGE) + from += mtd->erasesize - (mtd->writesize * len); + for (i = startblock; i < numblocks;) { int ret; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 50f3aa00a452..a81b185e23a7 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -181,6 +181,8 @@ typedef enum { #define NAND_NO_READRDY 0x00000100 /* Chip does not allow subpage writes */ #define NAND_NO_SUBPAGE_WRITE 0x00000200 +/* Chip stores bad block marker on the last page of the eraseblock */ +#define NAND_BB_LAST_PAGE 0x00000400 /* Device is one of 'new' xD cards that expose fake nand command set */ #define NAND_BROKEN_XD 0x00000400 -- cgit v1.2.3-58-ga151 From f6b173cc9d73c00a3182ec3fdb0f03909cad4b5b Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 7 May 2010 19:09:13 +0200 Subject: mtd: nand: add Toshiba TC58NVG0 device ID This NAND flash part advertises 0xD1 as an identifier but is still a working 128MBytes x 8bits 3.3V NAND part. Signed-off-by: Florian Fainelli Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_ids.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index 69ee2c90eb0b..89907ed99009 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -82,6 +82,7 @@ struct nand_flash_dev nand_flash_ids[] = { /* 1 Gigabit */ {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, LP_OPTIONS}, {"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, LP_OPTIONS}, + {"NAND 128MiB 3,3V 8-bit", 0xD1, 0, 128, 0, LP_OPTIONS}, {"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, LP_OPTIONS16}, {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, LP_OPTIONS16}, -- cgit v1.2.3-58-ga151 From 05d71b4625bdadd7c7ae80455e7038e221c76e4d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 30 Mar 2010 02:52:39 +0900 Subject: mtd: update gfp/slab.h includes Implicit slab.h inclusion via percpu.h is about to go away. Make sure gfp.h or slab.h is included as necessary. Signed-off-by: Tejun Heo Signed-off-by: David Woodhouse --- drivers/mtd/mtdcore.c | 1 + drivers/mtd/nand/mpc5121_nfc.c | 1 + drivers/mtd/nand/r852.c | 1 + 3 files changed, 3 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 3ae06c8935b5..a1b8b70d2d0a 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -21,6 +21,7 @@ #include #include #include +#include #include diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index f713b15fa454..3d0867d829cb 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -27,6 +27,7 @@ #include #include +#include #include #include #include diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 6dfbb4713162..78a423295474 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include "sm_common.h" -- cgit v1.2.3-58-ga151 From 73850975e9a070abeed5912a24975d531fd5074c Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 20 May 2010 10:04:23 +0100 Subject: mtd: mxc_nand: Remove duplicate NAND_CMD_RESET case value This reverts commit 66803762 ("mtd: mxc_nand: add RESET command support"). Support for NAND_CMD_RESET was added separately in commit d4840180 ("mtd: mxc_nand: set NFC registers after reset"), causing a build error: drivers/mtd/nand/mxc_nand.c: In function 'mxc_nand_command': drivers/mtd/nand/mxc_nand.c:689: error: duplicate case value drivers/mtd/nand/mxc_nand.c:606: error: previously used here Signed-off-by: David Woodhouse --- drivers/mtd/nand/mxc_nand.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 35da3dc4bd17..82e94389824e 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -686,7 +686,6 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: - case NAND_CMD_RESET: send_cmd(host, command, false); mxc_do_addr_cycle(mtd, column, page_addr); -- cgit v1.2.3-58-ga151