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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c')
-rw-r--r-- | ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c | 688 |
1 files changed, 0 insertions, 688 deletions
diff --git a/ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c b/ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c deleted file mode 100644 index 7bafa72f..00000000 --- a/ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c +++ /dev/null @@ -1,688 +0,0 @@ -/* - * TI FlashMedia driver - * - * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com> - * - * 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. - * - * Special thanks to Carlos Corbacho for providing various MemoryStick cards - * that made this driver possible. - * - */ - -#include <linux/tifm.h> -#include <linux/memstick.h> -#include <linux/highmem.h> -#include <linux/scatterlist.h> -#include <linux/log2.h> -#include <linux/module.h> -#include <asm/io.h> - -#define DRIVER_NAME "tifm_ms" - -static bool no_dma; -module_param(no_dma, bool, 0644); - -/* - * Some control bits of TIFM appear to conform to Sony's reference design, - * so I'm just assuming they all are. - */ - -#define TIFM_MS_STAT_DRQ 0x04000 -#define TIFM_MS_STAT_MSINT 0x02000 -#define TIFM_MS_STAT_RDY 0x01000 -#define TIFM_MS_STAT_CRC 0x00200 -#define TIFM_MS_STAT_TOE 0x00100 -#define TIFM_MS_STAT_EMP 0x00020 -#define TIFM_MS_STAT_FUL 0x00010 -#define TIFM_MS_STAT_CED 0x00008 -#define TIFM_MS_STAT_ERR 0x00004 -#define TIFM_MS_STAT_BRQ 0x00002 -#define TIFM_MS_STAT_CNK 0x00001 - -#define TIFM_MS_SYS_DMA 0x10000 -#define TIFM_MS_SYS_RESET 0x08000 -#define TIFM_MS_SYS_SRAC 0x04000 -#define TIFM_MS_SYS_INTEN 0x02000 -#define TIFM_MS_SYS_NOCRC 0x01000 -#define TIFM_MS_SYS_INTCLR 0x00800 -#define TIFM_MS_SYS_MSIEN 0x00400 -#define TIFM_MS_SYS_FCLR 0x00200 -#define TIFM_MS_SYS_FDIR 0x00100 -#define TIFM_MS_SYS_DAM 0x00080 -#define TIFM_MS_SYS_DRM 0x00040 -#define TIFM_MS_SYS_DRQSL 0x00020 -#define TIFM_MS_SYS_REI 0x00010 -#define TIFM_MS_SYS_REO 0x00008 -#define TIFM_MS_SYS_BSY_MASK 0x00007 - -#define TIFM_MS_SYS_FIFO (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \ - | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK) - -/* Hardware flags */ -enum { - CMD_READY = 0x01, - FIFO_READY = 0x02, - CARD_INT = 0x04 -}; - -struct tifm_ms { - struct tifm_dev *dev; - struct timer_list timer; - struct memstick_request *req; - struct tasklet_struct notify; - unsigned int mode_mask; - unsigned int block_pos; - unsigned long timeout_jiffies; - unsigned char eject:1, - use_dma:1; - unsigned char cmd_flags; - unsigned char io_pos; - unsigned int io_word; -}; - -static unsigned int tifm_ms_read_data(struct tifm_ms *host, - unsigned char *buf, unsigned int length) -{ - struct tifm_dev *sock = host->dev; - unsigned int off = 0; - - while (host->io_pos && length) { - buf[off++] = host->io_word & 0xff; - host->io_word >>= 8; - length--; - host->io_pos--; - } - - if (!length) - return off; - - while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) { - if (length < 4) - break; - *(unsigned int *)(buf + off) = __raw_readl(sock->addr - + SOCK_MS_DATA); - length -= 4; - off += 4; - } - - if (length - && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) { - host->io_word = readl(sock->addr + SOCK_MS_DATA); - for (host->io_pos = 4; host->io_pos; --host->io_pos) { - buf[off++] = host->io_word & 0xff; - host->io_word >>= 8; - length--; - if (!length) - break; - } - } - - return off; -} - -static unsigned int tifm_ms_write_data(struct tifm_ms *host, - unsigned char *buf, unsigned int length) -{ - struct tifm_dev *sock = host->dev; - unsigned int off = 0; - - if (host->io_pos) { - while (host->io_pos < 4 && length) { - host->io_word |= buf[off++] << (host->io_pos * 8); - host->io_pos++; - length--; - } - } - - if (host->io_pos == 4 - && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) { - writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM), - sock->addr + SOCK_MS_SYSTEM); - writel(host->io_word, sock->addr + SOCK_MS_DATA); - host->io_pos = 0; - host->io_word = 0; - } else if (host->io_pos) { - return off; - } - - if (!length) - return off; - - while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) { - if (length < 4) - break; - writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM), - sock->addr + SOCK_MS_SYSTEM); - __raw_writel(*(unsigned int *)(buf + off), - sock->addr + SOCK_MS_DATA); - length -= 4; - off += 4; - } - - switch (length) { - case 3: - host->io_word |= buf[off + 2] << 16; - host->io_pos++; - case 2: - host->io_word |= buf[off + 1] << 8; - host->io_pos++; - case 1: - host->io_word |= buf[off]; - host->io_pos++; - } - - off += host->io_pos; - - return off; -} - -static unsigned int tifm_ms_transfer_data(struct tifm_ms *host) -{ - struct tifm_dev *sock = host->dev; - unsigned int length; - unsigned int off; - unsigned int t_size, p_cnt; - unsigned char *buf; - struct page *pg; - unsigned long flags = 0; - - if (host->req->long_data) { - length = host->req->sg.length - host->block_pos; - off = host->req->sg.offset + host->block_pos; - } else { - length = host->req->data_len - host->block_pos; - off = 0; - } - dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length, - host->block_pos); - - while (length) { - unsigned int uninitialized_var(p_off); - - if (host->req->long_data) { - pg = nth_page(sg_page(&host->req->sg), - off >> PAGE_SHIFT); - p_off = offset_in_page(off); - p_cnt = PAGE_SIZE - p_off; - p_cnt = min(p_cnt, length); - - local_irq_save(flags); - buf = kmap_atomic(pg) + p_off; - } else { - buf = host->req->data + host->block_pos; - p_cnt = host->req->data_len - host->block_pos; - } - - t_size = host->req->data_dir == WRITE - ? tifm_ms_write_data(host, buf, p_cnt) - : tifm_ms_read_data(host, buf, p_cnt); - - if (host->req->long_data) { - kunmap_atomic(buf - p_off); - local_irq_restore(flags); - } - - if (!t_size) - break; - host->block_pos += t_size; - length -= t_size; - off += t_size; - } - - dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length); - if (!length && (host->req->data_dir == WRITE)) { - if (host->io_pos) { - writel(TIFM_MS_SYS_FDIR - | readl(sock->addr + SOCK_MS_SYSTEM), - sock->addr + SOCK_MS_SYSTEM); - writel(host->io_word, sock->addr + SOCK_MS_DATA); - } - writel(TIFM_MS_SYS_FDIR - | readl(sock->addr + SOCK_MS_SYSTEM), - sock->addr + SOCK_MS_SYSTEM); - writel(0, sock->addr + SOCK_MS_DATA); - } else { - readl(sock->addr + SOCK_MS_DATA); - } - - return length; -} - -static int tifm_ms_issue_cmd(struct tifm_ms *host) -{ - struct tifm_dev *sock = host->dev; - unsigned char *data; - unsigned int data_len, cmd, sys_param; - - host->cmd_flags = 0; - host->block_pos = 0; - host->io_pos = 0; - host->io_word = 0; - host->cmd_flags = 0; - - data = host->req->data; - - host->use_dma = !no_dma; - - if (host->req->long_data) { - data_len = host->req->sg.length; - if (!is_power_of_2(data_len)) - host->use_dma = 0; - } else { - data_len = host->req->data_len; - host->use_dma = 0; - } - - writel(TIFM_FIFO_INT_SETALL, - sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); - writel(TIFM_FIFO_ENABLE, - sock->addr + SOCK_FIFO_CONTROL); - - if (host->use_dma) { - if (1 != tifm_map_sg(sock, &host->req->sg, 1, - host->req->data_dir == READ - ? PCI_DMA_FROMDEVICE - : PCI_DMA_TODEVICE)) { - host->req->error = -ENOMEM; - return host->req->error; - } - data_len = sg_dma_len(&host->req->sg); - - writel(ilog2(data_len) - 2, - sock->addr + SOCK_FIFO_PAGE_SIZE); - writel(TIFM_FIFO_INTMASK, - sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); - sys_param = TIFM_DMA_EN | (1 << 8); - if (host->req->data_dir == WRITE) - sys_param |= TIFM_DMA_TX; - - writel(TIFM_FIFO_INTMASK, - sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); - - writel(sg_dma_address(&host->req->sg), - sock->addr + SOCK_DMA_ADDRESS); - writel(sys_param, sock->addr + SOCK_DMA_CONTROL); - } else { - writel(host->mode_mask | TIFM_MS_SYS_FIFO, - sock->addr + SOCK_MS_SYSTEM); - - writel(TIFM_FIFO_MORE, - sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); - } - - mod_timer(&host->timer, jiffies + host->timeout_jiffies); - writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL), - sock->addr + SOCK_CONTROL); - host->req->error = 0; - - sys_param = readl(sock->addr + SOCK_MS_SYSTEM); - sys_param |= TIFM_MS_SYS_INTCLR; - - if (host->use_dma) - sys_param |= TIFM_MS_SYS_DMA; - else - sys_param &= ~TIFM_MS_SYS_DMA; - - writel(sys_param, sock->addr + SOCK_MS_SYSTEM); - - cmd = (host->req->tpc & 0xf) << 12; - cmd |= data_len; - writel(cmd, sock->addr + SOCK_MS_COMMAND); - - dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param); - return 0; -} - -static void tifm_ms_complete_cmd(struct tifm_ms *host) -{ - struct tifm_dev *sock = host->dev; - struct memstick_host *msh = tifm_get_drvdata(sock); - int rc; - - del_timer(&host->timer); - - host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff; - host->req->int_reg = (host->req->int_reg & 1) - | ((host->req->int_reg << 4) & 0xe0); - - writel(TIFM_FIFO_INT_SETALL, - sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); - writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL); - - if (host->use_dma) { - tifm_unmap_sg(sock, &host->req->sg, 1, - host->req->data_dir == READ - ? PCI_DMA_FROMDEVICE - : PCI_DMA_TODEVICE); - } - - writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL), - sock->addr + SOCK_CONTROL); - - dev_dbg(&sock->dev, "TPC complete\n"); - do { - rc = memstick_next_req(msh, &host->req); - } while (!rc && tifm_ms_issue_cmd(host)); -} - -static int tifm_ms_check_status(struct tifm_ms *host) -{ - if (!host->req->error) { - if (!(host->cmd_flags & CMD_READY)) - return 1; - if (!(host->cmd_flags & FIFO_READY)) - return 1; - if (host->req->need_card_int - && !(host->cmd_flags & CARD_INT)) - return 1; - } - return 0; -} - -/* Called from interrupt handler */ -static void tifm_ms_data_event(struct tifm_dev *sock) -{ - struct tifm_ms *host; - unsigned int fifo_status = 0, host_status = 0; - int rc = 1; - - spin_lock(&sock->lock); - host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock)); - fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS); - host_status = readl(sock->addr + SOCK_MS_STATUS); - dev_dbg(&sock->dev, - "data event: fifo_status %x, host_status %x, flags %x\n", - fifo_status, host_status, host->cmd_flags); - - if (host->req) { - if (host->use_dma && (fifo_status & 1)) { - host->cmd_flags |= FIFO_READY; - rc = tifm_ms_check_status(host); - } - if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) { - if (!tifm_ms_transfer_data(host)) { - host->cmd_flags |= FIFO_READY; - rc = tifm_ms_check_status(host); - } - } - } - - writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS); - if (!rc) - tifm_ms_complete_cmd(host); - - spin_unlock(&sock->lock); -} - - -/* Called from interrupt handler */ -static void tifm_ms_card_event(struct tifm_dev *sock) -{ - struct tifm_ms *host; - unsigned int host_status = 0; - int rc = 1; - - spin_lock(&sock->lock); - host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock)); - host_status = readl(sock->addr + SOCK_MS_STATUS); - dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n", - host_status, host->cmd_flags); - - if (host->req) { - if (host_status & TIFM_MS_STAT_TOE) - host->req->error = -ETIME; - else if (host_status & TIFM_MS_STAT_CRC) - host->req->error = -EILSEQ; - - if (host_status & TIFM_MS_STAT_RDY) - host->cmd_flags |= CMD_READY; - - if (host_status & TIFM_MS_STAT_MSINT) - host->cmd_flags |= CARD_INT; - - rc = tifm_ms_check_status(host); - - } - - writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM), - sock->addr + SOCK_MS_SYSTEM); - - if (!rc) - tifm_ms_complete_cmd(host); - - spin_unlock(&sock->lock); - return; -} - -static void tifm_ms_req_tasklet(unsigned long data) -{ - struct memstick_host *msh = (struct memstick_host *)data; - struct tifm_ms *host = memstick_priv(msh); - struct tifm_dev *sock = host->dev; - unsigned long flags; - int rc; - - spin_lock_irqsave(&sock->lock, flags); - if (!host->req) { - if (host->eject) { - do { - rc = memstick_next_req(msh, &host->req); - if (!rc) - host->req->error = -ETIME; - } while (!rc); - spin_unlock_irqrestore(&sock->lock, flags); - return; - } - - do { - rc = memstick_next_req(msh, &host->req); - } while (!rc && tifm_ms_issue_cmd(host)); - } - spin_unlock_irqrestore(&sock->lock, flags); -} - -static void tifm_ms_dummy_submit(struct memstick_host *msh) -{ - return; -} - -static void tifm_ms_submit_req(struct memstick_host *msh) -{ - struct tifm_ms *host = memstick_priv(msh); - - tasklet_schedule(&host->notify); -} - -static int tifm_ms_set_param(struct memstick_host *msh, - enum memstick_param param, - int value) -{ - struct tifm_ms *host = memstick_priv(msh); - struct tifm_dev *sock = host->dev; - - switch (param) { - case MEMSTICK_POWER: - /* also affected by media detection mechanism */ - if (value == MEMSTICK_POWER_ON) { - host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI; - writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM); - writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR, - sock->addr + SOCK_MS_SYSTEM); - writel(0xffffffff, sock->addr + SOCK_MS_STATUS); - } else if (value == MEMSTICK_POWER_OFF) { - writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR, - sock->addr + SOCK_MS_SYSTEM); - writel(0xffffffff, sock->addr + SOCK_MS_STATUS); - } else - return -EINVAL; - break; - case MEMSTICK_INTERFACE: - if (value == MEMSTICK_SERIAL) { - host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI; - writel((~TIFM_CTRL_FAST_CLK) - & readl(sock->addr + SOCK_CONTROL), - sock->addr + SOCK_CONTROL); - } else if (value == MEMSTICK_PAR4) { - host->mode_mask = 0; - writel(TIFM_CTRL_FAST_CLK - | readl(sock->addr + SOCK_CONTROL), - sock->addr + SOCK_CONTROL); - } else - return -EINVAL; - break; - }; - - return 0; -} - -static void tifm_ms_abort(unsigned long data) -{ - struct tifm_ms *host = (struct tifm_ms *)data; - - dev_dbg(&host->dev->dev, "status %x\n", - readl(host->dev->addr + SOCK_MS_STATUS)); - printk(KERN_ERR - "%s : card failed to respond for a long period of time " - "(%x, %x)\n", - dev_name(&host->dev->dev), host->req ? host->req->tpc : 0, - host->cmd_flags); - - tifm_eject(host->dev); -} - -static int tifm_ms_probe(struct tifm_dev *sock) -{ - struct memstick_host *msh; - struct tifm_ms *host; - int rc = -EIO; - - if (!(TIFM_SOCK_STATE_OCCUPIED - & readl(sock->addr + SOCK_PRESENT_STATE))) { - printk(KERN_WARNING "%s : card gone, unexpectedly\n", - dev_name(&sock->dev)); - return rc; - } - - msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev); - if (!msh) - return -ENOMEM; - - host = memstick_priv(msh); - tifm_set_drvdata(sock, msh); - host->dev = sock; - host->timeout_jiffies = msecs_to_jiffies(1000); - - setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host); - tasklet_init(&host->notify, tifm_ms_req_tasklet, (unsigned long)msh); - - msh->request = tifm_ms_submit_req; - msh->set_param = tifm_ms_set_param; - sock->card_event = tifm_ms_card_event; - sock->data_event = tifm_ms_data_event; - if (tifm_has_ms_pif(sock)) - msh->caps |= MEMSTICK_CAP_PAR4; - - rc = memstick_add_host(msh); - if (!rc) - return 0; - - memstick_free_host(msh); - return rc; -} - -static void tifm_ms_remove(struct tifm_dev *sock) -{ - struct memstick_host *msh = tifm_get_drvdata(sock); - struct tifm_ms *host = memstick_priv(msh); - int rc = 0; - unsigned long flags; - - msh->request = tifm_ms_dummy_submit; - tasklet_kill(&host->notify); - spin_lock_irqsave(&sock->lock, flags); - host->eject = 1; - if (host->req) { - del_timer(&host->timer); - writel(TIFM_FIFO_INT_SETALL, - sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); - writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL); - if (host->use_dma) - tifm_unmap_sg(sock, &host->req->sg, 1, - host->req->data_dir == READ - ? PCI_DMA_TODEVICE - : PCI_DMA_FROMDEVICE); - host->req->error = -ETIME; - - do { - rc = memstick_next_req(msh, &host->req); - if (!rc) - host->req->error = -ETIME; - } while (!rc); - } - spin_unlock_irqrestore(&sock->lock, flags); - - memstick_remove_host(msh); - memstick_free_host(msh); -} - -#ifdef CONFIG_PM - -static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state) -{ - struct memstick_host *msh = tifm_get_drvdata(sock); - - memstick_suspend_host(msh); - return 0; -} - -static int tifm_ms_resume(struct tifm_dev *sock) -{ - struct memstick_host *msh = tifm_get_drvdata(sock); - - memstick_resume_host(msh); - return 0; -} - -#else - -#define tifm_ms_suspend NULL -#define tifm_ms_resume NULL - -#endif /* CONFIG_PM */ - -static struct tifm_device_id tifm_ms_id_tbl[] = { - { TIFM_TYPE_MS }, { 0 } -}; - -static struct tifm_driver tifm_ms_driver = { - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE - }, - .id_table = tifm_ms_id_tbl, - .probe = tifm_ms_probe, - .remove = tifm_ms_remove, - .suspend = tifm_ms_suspend, - .resume = tifm_ms_resume -}; - -static int __init tifm_ms_init(void) -{ - return tifm_register_driver(&tifm_ms_driver); -} - -static void __exit tifm_ms_exit(void) -{ - tifm_unregister_driver(&tifm_ms_driver); -} - -MODULE_AUTHOR("Alex Dubov"); -MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver"); -MODULE_LICENSE("GPL"); -MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl); - -module_init(tifm_ms_init); -module_exit(tifm_ms_exit); |