ide: remove the legacy ide driver

The legay ide driver has been replace with libata starting in 2003 and has
been scheduled for removal for a while.  Finally kill it off so that we
can start cleaning up various bits of cruft it forced on the block layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 692 deletions

diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c
deleted file mode 100644
index 329c7e4bc9d0..000000000000
--- a/drivers/ide/icside.c
+++ /dev/null
@@ -1,692 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 1996-2004 Russell King.
- *
- * Please note that this platform does not support 32-bit IDE IO.
- */
-
-#include <linux/string.h>
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/errno.h>
-#include <linux/ide.h>
-#include <linux/dma-mapping.h>
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/scatterlist.h>
-#include <linux/io.h>
-
-#include <asm/dma.h>
-#include <asm/ecard.h>
-
-#define DRV_NAME "icside"
-
-#define ICS_IDENT_OFFSET		0x2280
-
-#define ICS_ARCIN_V5_INTRSTAT		0x0000
-#define ICS_ARCIN_V5_INTROFFSET		0x0004
-#define ICS_ARCIN_V5_IDEOFFSET		0x2800
-#define ICS_ARCIN_V5_IDEALTOFFSET	0x2b80
-#define ICS_ARCIN_V5_IDESTEPPING	6
-
-#define ICS_ARCIN_V6_IDEOFFSET_1	0x2000
-#define ICS_ARCIN_V6_INTROFFSET_1	0x2200
-#define ICS_ARCIN_V6_INTRSTAT_1		0x2290
-#define ICS_ARCIN_V6_IDEALTOFFSET_1	0x2380
-#define ICS_ARCIN_V6_IDEOFFSET_2	0x3000
-#define ICS_ARCIN_V6_INTROFFSET_2	0x3200
-#define ICS_ARCIN_V6_INTRSTAT_2		0x3290
-#define ICS_ARCIN_V6_IDEALTOFFSET_2	0x3380
-#define ICS_ARCIN_V6_IDESTEPPING	6
-
-struct cardinfo {
-	unsigned int dataoffset;
-	unsigned int ctrloffset;
-	unsigned int stepping;
-};
-
-static struct cardinfo icside_cardinfo_v5 = {
-	.dataoffset	= ICS_ARCIN_V5_IDEOFFSET,
-	.ctrloffset	= ICS_ARCIN_V5_IDEALTOFFSET,
-	.stepping	= ICS_ARCIN_V5_IDESTEPPING,
-};
-
-static struct cardinfo icside_cardinfo_v6_1 = {
-	.dataoffset	= ICS_ARCIN_V6_IDEOFFSET_1,
-	.ctrloffset	= ICS_ARCIN_V6_IDEALTOFFSET_1,
-	.stepping	= ICS_ARCIN_V6_IDESTEPPING,
-};
-
-static struct cardinfo icside_cardinfo_v6_2 = {
-	.dataoffset	= ICS_ARCIN_V6_IDEOFFSET_2,
-	.ctrloffset	= ICS_ARCIN_V6_IDEALTOFFSET_2,
-	.stepping	= ICS_ARCIN_V6_IDESTEPPING,
-};
-
-struct icside_state {
-	unsigned int channel;
-	unsigned int enabled;
-	void __iomem *irq_port;
-	void __iomem *ioc_base;
-	unsigned int sel;
-	unsigned int type;
-	struct ide_host *host;
-};
-
-#define ICS_TYPE_A3IN	0
-#define ICS_TYPE_A3USER	1
-#define ICS_TYPE_V6	3
-#define ICS_TYPE_V5	15
-#define ICS_TYPE_NOTYPE	((unsigned int)-1)
-
-/* ---------------- Version 5 PCB Support Functions --------------------- */
-/* Prototype: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
- * Purpose  : enable interrupts from card
- */
-static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
-{
-	struct icside_state *state = ec->irq_data;
-
-	writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
-}
-
-/* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
- * Purpose  : disable interrupts from card
- */
-static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
-{
-	struct icside_state *state = ec->irq_data;
-
-	readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
-}
-
-static const expansioncard_ops_t icside_ops_arcin_v5 = {
-	.irqenable	= icside_irqenable_arcin_v5,
-	.irqdisable	= icside_irqdisable_arcin_v5,
-};
-
-
-/* ---------------- Version 6 PCB Support Functions --------------------- */
-/* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
- * Purpose  : enable interrupts from card
- */
-static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
-{
-	struct icside_state *state = ec->irq_data;
-	void __iomem *base = state->irq_port;
-
-	state->enabled = 1;
-
-	switch (state->channel) {
-	case 0:
-		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
-		readb(base + ICS_ARCIN_V6_INTROFFSET_2);
-		break;
-	case 1:
-		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
-		readb(base + ICS_ARCIN_V6_INTROFFSET_1);
-		break;
-	}
-}
-
-/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
- * Purpose  : disable interrupts from card
- */
-static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
-{
-	struct icside_state *state = ec->irq_data;
-
-	state->enabled = 0;
-
-	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
-	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
-}
-
-/* Prototype: icside_irqprobe(struct expansion_card *ec)
- * Purpose  : detect an active interrupt from card
- */
-static int icside_irqpending_arcin_v6(struct expansion_card *ec)
-{
-	struct icside_state *state = ec->irq_data;
-
-	return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
-	       readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
-}
-
-static const expansioncard_ops_t icside_ops_arcin_v6 = {
-	.irqenable	= icside_irqenable_arcin_v6,
-	.irqdisable	= icside_irqdisable_arcin_v6,
-	.irqpending	= icside_irqpending_arcin_v6,
-};
-
-/*
- * Handle routing of interrupts.  This is called before
- * we write the command to the drive.
- */
-static void icside_maskproc(ide_drive_t *drive, int mask)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct expansion_card *ec = ECARD_DEV(hwif->dev);
-	struct icside_state *state = ecard_get_drvdata(ec);
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	state->channel = hwif->channel;
-
-	if (state->enabled && !mask) {
-		switch (hwif->channel) {
-		case 0:
-			writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
-			readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
-			break;
-		case 1:
-			writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
-			readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
-			break;
-		}
-	} else {
-		readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
-		readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
-	}
-
-	local_irq_restore(flags);
-}
-
-static const struct ide_port_ops icside_v6_no_dma_port_ops = {
-	.maskproc		= icside_maskproc,
-};
-
-#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
-/*
- * SG-DMA support.
- *
- * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
- * There is only one DMA controller per card, which means that only
- * one drive can be accessed at one time.  NOTE! We do not enforce that
- * here, but we rely on the main IDE driver spotting that both
- * interfaces use the same IRQ, which should guarantee this.
- */
-
-/*
- * Configure the IOMD to give the appropriate timings for the transfer
- * mode being requested.  We take the advice of the ATA standards, and
- * calculate the cycle time based on the transfer mode, and the EIDE
- * MW DMA specs that the drive provides in the IDENTIFY command.
- *
- * We have the following IOMD DMA modes to choose from:
- *
- *	Type	Active		Recovery	Cycle
- *	A	250 (250)	312 (550)	562 (800)
- *	B	187		250		437
- *	C	125 (125)	125 (375)	250 (500)
- *	D	62		125		187
- *
- * (figures in brackets are actual measured timings)
- *
- * However, we also need to take care of the read/write active and
- * recovery timings:
- *
- *			Read	Write
- *  	Mode	Active	-- Recovery --	Cycle	IOMD type
- *	MW0	215	50	215	480	A
- *	MW1	80	50	50	150	C
- *	MW2	70	25	25	120	C
- */
-static void icside_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
-	unsigned long cycle_time = 0;
-	int use_dma_info = 0;
-	const u8 xfer_mode = drive->dma_mode;
-
-	switch (xfer_mode) {
-	case XFER_MW_DMA_2:
-		cycle_time = 250;
-		use_dma_info = 1;
-		break;
-
-	case XFER_MW_DMA_1:
-		cycle_time = 250;
-		use_dma_info = 1;
-		break;
-
-	case XFER_MW_DMA_0:
-		cycle_time = 480;
-		break;
-
-	case XFER_SW_DMA_2:
-	case XFER_SW_DMA_1:
-	case XFER_SW_DMA_0:
-		cycle_time = 480;
-		break;
-	}
-
-	/*
-	 * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
-	 * take care to note the values in the ID...
-	 */
-	if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
-		cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
-
-	ide_set_drivedata(drive, (void *)cycle_time);
-
-	printk(KERN_INFO "%s: %s selected (peak %luMB/s)\n",
-	       drive->name, ide_xfer_verbose(xfer_mode),
-	       2000 / (cycle_time ? cycle_time : (unsigned long) -1));
-}
-
-static const struct ide_port_ops icside_v6_port_ops = {
-	.set_dma_mode		= icside_set_dma_mode,
-	.maskproc		= icside_maskproc,
-};
-
-static void icside_dma_host_set(ide_drive_t *drive, int on)
-{
-}
-
-static int icside_dma_end(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct expansion_card *ec = ECARD_DEV(hwif->dev);
-
-	disable_dma(ec->dma);
-
-	return get_dma_residue(ec->dma) != 0;
-}
-
-static void icside_dma_start(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct expansion_card *ec = ECARD_DEV(hwif->dev);
-
-	/* We can not enable DMA on both channels simultaneously. */
-	BUG_ON(dma_channel_active(ec->dma));
-	enable_dma(ec->dma);
-}
-
-static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct expansion_card *ec = ECARD_DEV(hwif->dev);
-	struct icside_state *state = ecard_get_drvdata(ec);
-	unsigned int dma_mode;
-
-	if (cmd->tf_flags & IDE_TFLAG_WRITE)
-		dma_mode = DMA_MODE_WRITE;
-	else
-		dma_mode = DMA_MODE_READ;
-
-	/*
-	 * We can not enable DMA on both channels.
-	 */
-	BUG_ON(dma_channel_active(ec->dma));
-
-	/*
-	 * Ensure that we have the right interrupt routed.
-	 */
-	icside_maskproc(drive, 0);
-
-	/*
-	 * Route the DMA signals to the correct interface.
-	 */
-	writeb(state->sel | hwif->channel, state->ioc_base);
-
-	/*
-	 * Select the correct timing for this drive.
-	 */
-	set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));
-
-	/*
-	 * Tell the DMA engine about the SG table and
-	 * data direction.
-	 */
-	set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
-	set_dma_mode(ec->dma, dma_mode);
-
-	return 0;
-}
-
-static int icside_dma_test_irq(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct expansion_card *ec = ECARD_DEV(hwif->dev);
-	struct icside_state *state = ecard_get_drvdata(ec);
-
-	return readb(state->irq_port +
-		     (hwif->channel ?
-			ICS_ARCIN_V6_INTRSTAT_2 :
-			ICS_ARCIN_V6_INTRSTAT_1)) & 1;
-}
-
-static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
-	hwif->dmatable_cpu	= NULL;
-	hwif->dmatable_dma	= 0;
-
-	return 0;
-}
-
-static const struct ide_dma_ops icside_v6_dma_ops = {
-	.dma_host_set		= icside_dma_host_set,
-	.dma_setup		= icside_dma_setup,
-	.dma_start		= icside_dma_start,
-	.dma_end		= icside_dma_end,
-	.dma_test_irq		= icside_dma_test_irq,
-	.dma_lost_irq		= ide_dma_lost_irq,
-};
-#endif
-
-static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
-	return -EOPNOTSUPP;
-}
-
-static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
-			       struct cardinfo *info, struct expansion_card *ec)
-{
-	unsigned long port = (unsigned long)base + info->dataoffset;
-
-	hw->io_ports.data_addr	 = port;
-	hw->io_ports.error_addr	 = port + (1 << info->stepping);
-	hw->io_ports.nsect_addr	 = port + (2 << info->stepping);
-	hw->io_ports.lbal_addr	 = port + (3 << info->stepping);
-	hw->io_ports.lbam_addr	 = port + (4 << info->stepping);
-	hw->io_ports.lbah_addr	 = port + (5 << info->stepping);
-	hw->io_ports.device_addr = port + (6 << info->stepping);
-	hw->io_ports.status_addr = port + (7 << info->stepping);
-	hw->io_ports.ctl_addr	 = (unsigned long)base + info->ctrloffset;
-
-	hw->irq = ec->irq;
-	hw->dev = &ec->dev;
-}
-
-static const struct ide_port_info icside_v5_port_info = {
-	.host_flags		= IDE_HFLAG_NO_DMA,
-	.chipset		= ide_acorn,
-};
-
-static int icside_register_v5(struct icside_state *state,
-			      struct expansion_card *ec)
-{
-	void __iomem *base;
-	struct ide_host *host;
-	struct ide_hw hw, *hws[] = { &hw };
-	int ret;
-
-	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
-	if (!base)
-		return -ENOMEM;
-
-	state->irq_port = base;
-
-	ec->irqaddr  = base + ICS_ARCIN_V5_INTRSTAT;
-	ec->irqmask  = 1;
-
-	ecard_setirq(ec, &icside_ops_arcin_v5, state);
-
-	/*
-	 * Be on the safe side - disable interrupts
-	 */
-	icside_irqdisable_arcin_v5(ec, 0);
-
-	icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
-
-	host = ide_host_alloc(&icside_v5_port_info, hws, 1);
-	if (host == NULL)
-		return -ENODEV;
-
-	state->host = host;
-
-	ecard_set_drvdata(ec, state);
-
-	ret = ide_host_register(host, &icside_v5_port_info, hws);
-	if (ret)
-		goto err_free;
-
-	return 0;
-err_free:
-	ide_host_free(host);
-	ecard_set_drvdata(ec, NULL);
-	return ret;
-}
-
-static const struct ide_port_info icside_v6_port_info = {
-	.init_dma		= icside_dma_off_init,
-	.port_ops		= &icside_v6_no_dma_port_ops,
-	.host_flags		= IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
-	.mwdma_mask		= ATA_MWDMA2,
-	.swdma_mask		= ATA_SWDMA2,
-	.chipset		= ide_acorn,
-};
-
-static int icside_register_v6(struct icside_state *state,
-			      struct expansion_card *ec)
-{
-	void __iomem *ioc_base, *easi_base;
-	struct ide_host *host;
-	unsigned int sel = 0;
-	int ret;
-	struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
-	struct ide_port_info d = icside_v6_port_info;
-
-	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
-	if (!ioc_base) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	easi_base = ioc_base;
-
-	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
-		easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
-		if (!easi_base) {
-			ret = -ENOMEM;
-			goto out;
-		}
-
-		/*
-		 * Enable access to the EASI region.
-		 */
-		sel = 1 << 5;
-	}
-
-	writeb(sel, ioc_base);
-
-	ecard_setirq(ec, &icside_ops_arcin_v6, state);
-
-	state->irq_port   = easi_base;
-	state->ioc_base   = ioc_base;
-	state->sel	  = sel;
-
-	/*
-	 * Be on the safe side - disable interrupts
-	 */
-	icside_irqdisable_arcin_v6(ec, 0);
-
-	icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
-	icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
-
-	host = ide_host_alloc(&d, hws, 2);
-	if (host == NULL)
-		return -ENODEV;
-
-	state->host = host;
-
-	ecard_set_drvdata(ec, state);
-
-#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
-	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
-		d.init_dma = icside_dma_init;
-		d.port_ops = &icside_v6_port_ops;
-		d.dma_ops  = &icside_v6_dma_ops;
-	}
-#endif
-
-	ret = ide_host_register(host, &d, hws);
-	if (ret)
-		goto err_free;
-
-	return 0;
-err_free:
-	ide_host_free(host);
-	if (d.dma_ops)
-		free_dma(ec->dma);
-	ecard_set_drvdata(ec, NULL);
-out:
-	return ret;
-}
-
-static int icside_probe(struct expansion_card *ec, const struct ecard_id *id)
-{
-	struct icside_state *state;
-	void __iomem *idmem;
-	int ret;
-
-	ret = ecard_request_resources(ec);
-	if (ret)
-		goto out;
-
-	state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
-	if (!state) {
-		ret = -ENOMEM;
-		goto release;
-	}
-
-	state->type	= ICS_TYPE_NOTYPE;
-
-	idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
-	if (idmem) {
-		unsigned int type;
-
-		type = readb(idmem + ICS_IDENT_OFFSET) & 1;
-		type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
-		type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
-		type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
-		ecardm_iounmap(ec, idmem);
-
-		state->type = type;
-	}
-
-	switch (state->type) {
-	case ICS_TYPE_A3IN:
-		dev_warn(&ec->dev, "A3IN unsupported\n");
-		ret = -ENODEV;
-		break;
-
-	case ICS_TYPE_A3USER:
-		dev_warn(&ec->dev, "A3USER unsupported\n");
-		ret = -ENODEV;
-		break;
-
-	case ICS_TYPE_V5:
-		ret = icside_register_v5(state, ec);
-		break;
-
-	case ICS_TYPE_V6:
-		ret = icside_register_v6(state, ec);
-		break;
-
-	default:
-		dev_warn(&ec->dev, "unknown interface type\n");
-		ret = -ENODEV;
-		break;
-	}
-
-	if (ret == 0)
-		goto out;
-
-	kfree(state);
- release:
-	ecard_release_resources(ec);
- out:
-	return ret;
-}
-
-static void icside_remove(struct expansion_card *ec)
-{
-	struct icside_state *state = ecard_get_drvdata(ec);
-
-	switch (state->type) {
-	case ICS_TYPE_V5:
-		/* FIXME: tell IDE to stop using the interface */
-
-		/* Disable interrupts */
-		icside_irqdisable_arcin_v5(ec, 0);
-		break;
-
-	case ICS_TYPE_V6:
-		/* FIXME: tell IDE to stop using the interface */
-		if (ec->dma != NO_DMA)
-			free_dma(ec->dma);
-
-		/* Disable interrupts */
-		icside_irqdisable_arcin_v6(ec, 0);
-
-		/* Reset the ROM pointer/EASI selection */
-		writeb(0, state->ioc_base);
-		break;
-	}
-
-	ecard_set_drvdata(ec, NULL);
-
-	kfree(state);
-	ecard_release_resources(ec);
-}
-
-static void icside_shutdown(struct expansion_card *ec)
-{
-	struct icside_state *state = ecard_get_drvdata(ec);
-	unsigned long flags;
-
-	/*
-	 * Disable interrupts from this card.  We need to do
-	 * this before disabling EASI since we may be accessing
-	 * this register via that region.
-	 */
-	local_irq_save(flags);
-	ec->ops->irqdisable(ec, 0);
-	local_irq_restore(flags);
-
-	/*
-	 * Reset the ROM pointer so that we can read the ROM
-	 * after a soft reboot.  This also disables access to
-	 * the IDE taskfile via the EASI region.
-	 */
-	if (state->ioc_base)
-		writeb(0, state->ioc_base);
-}
-
-static const struct ecard_id icside_ids[] = {
-	{ MANU_ICS,  PROD_ICS_IDE  },
-	{ MANU_ICS2, PROD_ICS2_IDE },
-	{ 0xffff, 0xffff }
-};
-
-static struct ecard_driver icside_driver = {
-	.probe		= icside_probe,
-	.remove		= icside_remove,
-	.shutdown	= icside_shutdown,
-	.id_table	= icside_ids,
-	.drv = {
-		.name	= "icside",
-	},
-};
-
-static int __init icside_init(void)
-{
-	return ecard_register_driver(&icside_driver);
-}
-
-static void __exit icside_exit(void)
-{
-	ecard_remove_driver(&icside_driver);
-}
-
-MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("ICS IDE driver");
-
-module_init(icside_init);
-module_exit(icside_exit);