diff options
Diffstat (limited to 'drivers/memstick/host/rtsx_pci_ms.c')
| -rw-r--r-- | drivers/memstick/host/rtsx_pci_ms.c | 638 |
1 files changed, 0 insertions, 638 deletions
diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c deleted file mode 100644 index 980a54513e6c..000000000000 --- a/drivers/memstick/host/rtsx_pci_ms.c +++ /dev/null @@ -1,638 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* Realtek PCI-Express Memstick Card Interface driver - * - * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. - * - * Author: - * Wei WANG <wei_wang@realsil.com.cn> - */ - -#include <linux/module.h> -#include <linux/highmem.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/memstick.h> -#include <linux/rtsx_pci.h> -#include <asm/unaligned.h> - -struct realtek_pci_ms { - struct platform_device *pdev; - struct rtsx_pcr *pcr; - struct memstick_host *msh; - struct memstick_request *req; - - struct mutex host_mutex; - struct work_struct handle_req; - - u8 ssc_depth; - unsigned int clock; - unsigned char ifmode; - bool eject; -}; - -static inline struct device *ms_dev(struct realtek_pci_ms *host) -{ - return &(host->pdev->dev); -} - -static inline void ms_clear_error(struct realtek_pci_ms *host) -{ - rtsx_pci_write_register(host->pcr, CARD_STOP, - MS_STOP | MS_CLR_ERR, MS_STOP | MS_CLR_ERR); -} - -#ifdef DEBUG - -static void ms_print_debug_regs(struct realtek_pci_ms *host) -{ - struct rtsx_pcr *pcr = host->pcr; - u16 i; - u8 *ptr; - - /* Print MS host internal registers */ - rtsx_pci_init_cmd(pcr); - for (i = 0xFD40; i <= 0xFD44; i++) - rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); - for (i = 0xFD52; i <= 0xFD69; i++) - rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); - rtsx_pci_send_cmd(pcr, 100); - - ptr = rtsx_pci_get_cmd_data(pcr); - for (i = 0xFD40; i <= 0xFD44; i++) - dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); - for (i = 0xFD52; i <= 0xFD69; i++) - dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); -} - -#else - -#define ms_print_debug_regs(host) - -#endif - -static int ms_power_on(struct realtek_pci_ms *host) -{ - struct rtsx_pcr *pcr = host->pcr; - int err; - - rtsx_pci_init_cmd(pcr); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, MS_MOD_SEL); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE, - CARD_SHARE_MASK, CARD_SHARE_48_MS); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, - MS_CLK_EN, MS_CLK_EN); - err = rtsx_pci_send_cmd(pcr, 100); - if (err < 0) - return err; - - err = rtsx_pci_card_pull_ctl_enable(pcr, RTSX_MS_CARD); - if (err < 0) - return err; - - err = rtsx_pci_card_power_on(pcr, RTSX_MS_CARD); - if (err < 0) - return err; - - /* Wait ms power stable */ - msleep(150); - - err = rtsx_pci_write_register(pcr, CARD_OE, - MS_OUTPUT_EN, MS_OUTPUT_EN); - if (err < 0) - return err; - - return 0; -} - -static int ms_power_off(struct realtek_pci_ms *host) -{ - struct rtsx_pcr *pcr = host->pcr; - int err; - - rtsx_pci_init_cmd(pcr); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, MS_CLK_EN, 0); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE, MS_OUTPUT_EN, 0); - - err = rtsx_pci_send_cmd(pcr, 100); - if (err < 0) - return err; - - err = rtsx_pci_card_power_off(pcr, RTSX_MS_CARD); - if (err < 0) - return err; - - return rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD); -} - -static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir, - u8 tpc, u8 cfg, struct scatterlist *sg) -{ - struct rtsx_pcr *pcr = host->pcr; - int err; - unsigned int length = sg->length; - u16 sec_cnt = (u16)(length / 512); - u8 val, trans_mode, dma_dir; - struct memstick_dev *card = host->msh->card; - bool pro_card = card->id.type == MEMSTICK_TYPE_PRO; - - dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n", - __func__, tpc, (data_dir == READ) ? "READ" : "WRITE", - length); - - if (data_dir == READ) { - dma_dir = DMA_DIR_FROM_CARD; - trans_mode = pro_card ? MS_TM_AUTO_READ : MS_TM_NORMAL_READ; - } else { - dma_dir = DMA_DIR_TO_CARD; - trans_mode = pro_card ? MS_TM_AUTO_WRITE : MS_TM_NORMAL_WRITE; - } - - rtsx_pci_init_cmd(pcr); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); - if (pro_card) { - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_H, - 0xFF, (u8)(sec_cnt >> 8)); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_L, - 0xFF, (u8)sec_cnt); - } - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0, - DMA_DONE_INT, DMA_DONE_INT); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(length >> 24)); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(length >> 16)); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(length >> 8)); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)length); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL, - 0x03 | DMA_PACK_SIZE_MASK, dma_dir | DMA_EN | DMA_512); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, - 0x01, RING_BUFFER); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER, - 0xFF, MS_TRANSFER_START | trans_mode); - rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER, - MS_TRANSFER_END, MS_TRANSFER_END); - - rtsx_pci_send_cmd_no_wait(pcr); - - err = rtsx_pci_transfer_data(pcr, sg, 1, data_dir == READ, 10000); - if (err < 0) { - ms_clear_error(host); - return err; - } - - rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); - if (pro_card) { - if (val & (MS_INT_CMDNK | MS_INT_ERR | - MS_CRC16_ERR | MS_RDY_TIMEOUT)) - return -EIO; - } else { - if (val & (MS_CRC16_ERR | MS_RDY_TIMEOUT)) - return -EIO; - } - - return 0; -} - -static int ms_write_bytes(struct realtek_pci_ms *host, u8 tpc, - u8 cfg, u8 cnt, u8 *data, u8 *int_reg) -{ - struct rtsx_pcr *pcr = host->pcr; - int err, i; - - dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc); - - if (!data) - return -EINVAL; - - rtsx_pci_init_cmd(pcr); - - for (i = 0; i < cnt; i++) - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, - PPBUF_BASE2 + i, 0xFF, data[i]); - if (cnt % 2) - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, - PPBUF_BASE2 + i, 0xFF, 0xFF); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, - 0x01, PINGPONG_BUFFER); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER, - 0xFF, MS_TRANSFER_START | MS_TM_WRITE_BYTES); - rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER, - MS_TRANSFER_END, MS_TRANSFER_END); - if (int_reg) - rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0); - - err = rtsx_pci_send_cmd(pcr, 5000); - if (err < 0) { - u8 val; - - rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); - dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val); - - if (int_reg) - *int_reg = val & 0x0F; - - ms_print_debug_regs(host); - - ms_clear_error(host); - - if (!(tpc & 0x08)) { - if (val & MS_CRC16_ERR) - return -EIO; - } else { - if (!(val & 0x80)) { - if (val & (MS_INT_ERR | MS_INT_CMDNK)) - return -EIO; - } - } - - return -ETIMEDOUT; - } - - if (int_reg) { - u8 *ptr = rtsx_pci_get_cmd_data(pcr) + 1; - *int_reg = *ptr & 0x0F; - } - - return 0; -} - -static int ms_read_bytes(struct realtek_pci_ms *host, u8 tpc, - u8 cfg, u8 cnt, u8 *data, u8 *int_reg) -{ - struct rtsx_pcr *pcr = host->pcr; - int err, i; - u8 *ptr; - - dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc); - - if (!data) - return -EINVAL; - - rtsx_pci_init_cmd(pcr); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, - 0x01, PINGPONG_BUFFER); - - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER, - 0xFF, MS_TRANSFER_START | MS_TM_READ_BYTES); - rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER, - MS_TRANSFER_END, MS_TRANSFER_END); - for (i = 0; i < cnt - 1; i++) - rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + i, 0, 0); - if (cnt % 2) - rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + cnt, 0, 0); - else - rtsx_pci_add_cmd(pcr, READ_REG_CMD, - PPBUF_BASE2 + cnt - 1, 0, 0); - if (int_reg) - rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0); - - err = rtsx_pci_send_cmd(pcr, 5000); - if (err < 0) { - u8 val; - - rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); - dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val); - - if (int_reg) - *int_reg = val & 0x0F; - - ms_print_debug_regs(host); - - ms_clear_error(host); - - if (!(tpc & 0x08)) { - if (val & MS_CRC16_ERR) - return -EIO; - } else { - if (!(val & 0x80)) { - if (val & (MS_INT_ERR | MS_INT_CMDNK)) - return -EIO; - } - } - - return -ETIMEDOUT; - } - - ptr = rtsx_pci_get_cmd_data(pcr) + 1; - for (i = 0; i < cnt; i++) - data[i] = *ptr++; - - if (int_reg) - *int_reg = *ptr & 0x0F; - - return 0; -} - -static int rtsx_pci_ms_issue_cmd(struct realtek_pci_ms *host) -{ - struct memstick_request *req = host->req; - int err = 0; - u8 cfg = 0, int_reg; - - dev_dbg(ms_dev(host), "%s\n", __func__); - - if (req->need_card_int) { - if (host->ifmode != MEMSTICK_SERIAL) - cfg = WAIT_INT; - } - - if (req->long_data) { - err = ms_transfer_data(host, req->data_dir, - req->tpc, cfg, &(req->sg)); - } else { - if (req->data_dir == READ) { - err = ms_read_bytes(host, req->tpc, cfg, - req->data_len, req->data, &int_reg); - } else { - err = ms_write_bytes(host, req->tpc, cfg, - req->data_len, req->data, &int_reg); - } - } - if (err < 0) - return err; - - if (req->need_card_int && (host->ifmode == MEMSTICK_SERIAL)) { - err = ms_read_bytes(host, MS_TPC_GET_INT, - NO_WAIT_INT, 1, &int_reg, NULL); - if (err < 0) - return err; - } - - if (req->need_card_int) { - dev_dbg(ms_dev(host), "int_reg: 0x%02x\n", int_reg); - - if (int_reg & MS_INT_CMDNK) - req->int_reg |= MEMSTICK_INT_CMDNAK; - if (int_reg & MS_INT_BREQ) - req->int_reg |= MEMSTICK_INT_BREQ; - if (int_reg & MS_INT_ERR) - req->int_reg |= MEMSTICK_INT_ERR; - if (int_reg & MS_INT_CED) - req->int_reg |= MEMSTICK_INT_CED; - } - - return 0; -} - -static void rtsx_pci_ms_handle_req(struct work_struct *work) -{ - struct realtek_pci_ms *host = container_of(work, - struct realtek_pci_ms, handle_req); - struct rtsx_pcr *pcr = host->pcr; - struct memstick_host *msh = host->msh; - int rc; - - mutex_lock(&pcr->pcr_mutex); - - rtsx_pci_start_run(pcr); - - rtsx_pci_switch_clock(host->pcr, host->clock, host->ssc_depth, - false, true, false); - rtsx_pci_write_register(pcr, CARD_SELECT, 0x07, MS_MOD_SEL); - rtsx_pci_write_register(pcr, CARD_SHARE_MODE, - CARD_SHARE_MASK, CARD_SHARE_48_MS); - - if (!host->req) { - do { - rc = memstick_next_req(msh, &host->req); - dev_dbg(ms_dev(host), "next req %d\n", rc); - - if (!rc) - host->req->error = rtsx_pci_ms_issue_cmd(host); - } while (!rc); - } - - mutex_unlock(&pcr->pcr_mutex); -} - -static void rtsx_pci_ms_request(struct memstick_host *msh) -{ - struct realtek_pci_ms *host = memstick_priv(msh); - - dev_dbg(ms_dev(host), "--> %s\n", __func__); - - if (rtsx_pci_card_exclusive_check(host->pcr, RTSX_MS_CARD)) - return; - - schedule_work(&host->handle_req); -} - -static int rtsx_pci_ms_set_param(struct memstick_host *msh, - enum memstick_param param, int value) -{ - struct realtek_pci_ms *host = memstick_priv(msh); - struct rtsx_pcr *pcr = host->pcr; - unsigned int clock = 0; - u8 ssc_depth = 0; - int err; - - dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n", - __func__, param, value); - - err = rtsx_pci_card_exclusive_check(host->pcr, RTSX_MS_CARD); - if (err) - return err; - - switch (param) { - case MEMSTICK_POWER: - if (value == MEMSTICK_POWER_ON) - err = ms_power_on(host); - else if (value == MEMSTICK_POWER_OFF) - err = ms_power_off(host); - else - return -EINVAL; - break; - - case MEMSTICK_INTERFACE: - if (value == MEMSTICK_SERIAL) { - clock = 19000000; - ssc_depth = RTSX_SSC_DEPTH_500K; - - err = rtsx_pci_write_register(pcr, MS_CFG, 0x58, - MS_BUS_WIDTH_1 | PUSH_TIME_DEFAULT); - if (err < 0) - return err; - } else if (value == MEMSTICK_PAR4) { - clock = 39000000; - ssc_depth = RTSX_SSC_DEPTH_1M; - - err = rtsx_pci_write_register(pcr, MS_CFG, - 0x58, MS_BUS_WIDTH_4 | PUSH_TIME_ODD); - if (err < 0) - return err; - } else { - return -EINVAL; - } - - err = rtsx_pci_switch_clock(pcr, clock, - ssc_depth, false, true, false); - if (err < 0) - return err; - - host->ssc_depth = ssc_depth; - host->clock = clock; - host->ifmode = value; - break; - } - - return 0; -} - -#ifdef CONFIG_PM - -static int rtsx_pci_ms_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct realtek_pci_ms *host = platform_get_drvdata(pdev); - struct memstick_host *msh = host->msh; - - dev_dbg(ms_dev(host), "--> %s\n", __func__); - - memstick_suspend_host(msh); - return 0; -} - -static int rtsx_pci_ms_resume(struct platform_device *pdev) -{ - struct realtek_pci_ms *host = platform_get_drvdata(pdev); - struct memstick_host *msh = host->msh; - - dev_dbg(ms_dev(host), "--> %s\n", __func__); - - memstick_resume_host(msh); - return 0; -} - -#else /* CONFIG_PM */ - -#define rtsx_pci_ms_suspend NULL -#define rtsx_pci_ms_resume NULL - -#endif /* CONFIG_PM */ - -static void rtsx_pci_ms_card_event(struct platform_device *pdev) -{ - struct realtek_pci_ms *host = platform_get_drvdata(pdev); - - memstick_detect_change(host->msh); -} - -static int rtsx_pci_ms_drv_probe(struct platform_device *pdev) -{ - struct memstick_host *msh; - struct realtek_pci_ms *host; - struct rtsx_pcr *pcr; - struct pcr_handle *handle = pdev->dev.platform_data; - int rc; - - if (!handle) - return -ENXIO; - - pcr = handle->pcr; - if (!pcr) - return -ENXIO; - - dev_dbg(&(pdev->dev), - ": Realtek PCI-E Memstick controller found\n"); - - msh = memstick_alloc_host(sizeof(*host), &pdev->dev); - if (!msh) - return -ENOMEM; - - host = memstick_priv(msh); - host->pcr = pcr; - host->msh = msh; - host->pdev = pdev; - platform_set_drvdata(pdev, host); - pcr->slots[RTSX_MS_CARD].p_dev = pdev; - pcr->slots[RTSX_MS_CARD].card_event = rtsx_pci_ms_card_event; - - mutex_init(&host->host_mutex); - - INIT_WORK(&host->handle_req, rtsx_pci_ms_handle_req); - msh->request = rtsx_pci_ms_request; - msh->set_param = rtsx_pci_ms_set_param; - msh->caps = MEMSTICK_CAP_PAR4; - - rc = memstick_add_host(msh); - if (rc) { - memstick_free_host(msh); - return rc; - } - - return 0; -} - -static void rtsx_pci_ms_drv_remove(struct platform_device *pdev) -{ - struct realtek_pci_ms *host = platform_get_drvdata(pdev); - struct rtsx_pcr *pcr; - struct memstick_host *msh; - int rc; - - pcr = host->pcr; - pcr->slots[RTSX_MS_CARD].p_dev = NULL; - pcr->slots[RTSX_MS_CARD].card_event = NULL; - msh = host->msh; - host->eject = true; - cancel_work_sync(&host->handle_req); - - mutex_lock(&host->host_mutex); - if (host->req) { - dev_dbg(&(pdev->dev), - "%s: Controller removed during transfer\n", - dev_name(&msh->dev)); - - rtsx_pci_complete_unfinished_transfer(pcr); - - host->req->error = -ENOMEDIUM; - do { - rc = memstick_next_req(msh, &host->req); - if (!rc) - host->req->error = -ENOMEDIUM; - } while (!rc); - } - mutex_unlock(&host->host_mutex); - - memstick_remove_host(msh); - memstick_free_host(msh); - - dev_dbg(&(pdev->dev), - ": Realtek PCI-E Memstick controller has been removed\n"); -} - -static struct platform_device_id rtsx_pci_ms_ids[] = { - { - .name = DRV_NAME_RTSX_PCI_MS, - }, { - /* sentinel */ - } -}; -MODULE_DEVICE_TABLE(platform, rtsx_pci_ms_ids); - -static struct platform_driver rtsx_pci_ms_driver = { - .probe = rtsx_pci_ms_drv_probe, - .remove_new = rtsx_pci_ms_drv_remove, - .id_table = rtsx_pci_ms_ids, - .suspend = rtsx_pci_ms_suspend, - .resume = rtsx_pci_ms_resume, - .driver = { - .name = DRV_NAME_RTSX_PCI_MS, - }, -}; -module_platform_driver(rtsx_pci_ms_driver); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>"); -MODULE_DESCRIPTION("Realtek PCI-E Memstick Card Host Driver"); |