Seth/kernel_amazon_mt8127-common
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a8732f92e31108edc13ca4d4d05b7a7e24f1cd7d
kernel_amazon_mt8127-common/drivers/mmc/card/block.c
T
Stricted a8732f92e3 Merge tag 'v3.10.102' into update 
This is the 3.10.102 stable release
2018-03-21 22:54:09 +01:00

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/*
* Block driver for media (i.e., flash cards)
*
* Copyright 2002 Hewlett-Packard Company
* Copyright 2005-2008 Pierre Ossman
*
* Use consistent with the GNU GPL is permitted,
* provided that this copyright notice is
* preserved in its entirety in all copies and derived works.
*
* HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
* FITNESS FOR ANY PARTICULAR PURPOSE.
*
* Many thanks to Alessandro Rubini and Jonathan Corbet!
*
* Author: Andrew Christian
* 28 May 2002
*/
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/hdreg.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <linux/scatterlist.h>
#include <linux/string_helpers.h>
#include <linux/delay.h>
#include <linux/capability.h>
#include <linux/compat.h>
#define CREATE_TRACE_POINTS
#include <trace/events/mmc.h>
#include <linux/mmc/ioctl.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
#include <asm/uaccess.h>
#include "queue.h"
#include <mach/mtk_meminfo.h>
//add vmstat info with block tag log
#include <linux/vmstat.h>
#define FEATURE_STORAGE_VMSTAT_LOGGER
#include <linux/xlog.h>
#include <asm/div64.h>
#include <linux/vmalloc.h>
#include <linux/mmc/sd_misc.h>
#define MET_USER_EVENT_SUPPORT
#include <linux/met_drv.h>
#define FEATURE_STORAGE_PERF_INDEX
//enable storage log in user load
#if 0
#ifdef USER_BUILD_KERNEL
#undef FEATURE_STORAGE_PERF_INDEX
#endif
#endif
MODULE_ALIAS("mmc:block");
#ifdef MODULE_PARAM_PREFIX
#undef MODULE_PARAM_PREFIX
#endif
#define MODULE_PARAM_PREFIX "mmcblk."
#define INAND_CMD38_ARG_EXT_CSD 113
#define INAND_CMD38_ARG_ERASE 0x00
#define INAND_CMD38_ARG_TRIM 0x01
#define INAND_CMD38_ARG_SECERASE 0x80
#define INAND_CMD38_ARG_SECTRIM1 0x81
#define INAND_CMD38_ARG_SECTRIM2 0x88
#define MMC_BLK_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */
#define mmc_req_rel_wr(req) ((req->cmd_flags & REQ_FUA) && \
(rq_data_dir(req) == WRITE))
#define PACKED_CMD_VER 0x01
#define PACKED_CMD_WR 0x02
static DEFINE_MUTEX(block_mutex);
/*
* The defaults come from config options but can be overriden by module
* or bootarg options.
*/
static int perdev_minors = CONFIG_MMC_BLOCK_MINORS;
/*
* We've only got one major, so number of mmcblk devices is
* limited to 256 / number of minors per device.
*/
static int max_devices;
/* 256 minors, so at most 256 separate devices */
static DECLARE_BITMAP(dev_use, 256);
static DECLARE_BITMAP(name_use, 256);
/*
* There is one mmc_blk_data per slot.
*/
struct mmc_blk_data {
spinlock_t lock;
struct gendisk *disk;
struct mmc_queue queue;
struct list_head part;
unsigned int flags;
#define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */
#define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */
#define MMC_BLK_PACKED_CMD (1 << 2) /* MMC packed command support */
unsigned int usage;
unsigned int read_only;
unsigned int part_type;
unsigned int name_idx;
unsigned int reset_done;
#define MMC_BLK_READ BIT(0)
#define MMC_BLK_WRITE BIT(1)
#define MMC_BLK_DISCARD BIT(2)
#define MMC_BLK_SECDISCARD BIT(3)
/*
* Only set in main mmc_blk_data associated
* with mmc_card with mmc_set_drvdata, and keeps
* track of the current selected device partition.
*/
unsigned int part_curr;
struct device_attribute force_ro;
struct device_attribute power_ro_lock;
int area_type;
};
static DEFINE_MUTEX(open_lock);
enum {
MMC_PACKED_NR_IDX = -1,
MMC_PACKED_NR_ZERO,
MMC_PACKED_NR_SINGLE,
};
module_param(perdev_minors, int, 0444);
MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device");
static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md);
static int get_card_status(struct mmc_card *card, u32 *status, int retries);
#ifndef CONFIG_MTK_FPGA
#include <linux/met_ftrace_bio.h>
#endif
char mmc_get_rw_type(u32 opcode)
{
switch (opcode)
{
case MMC_READ_SINGLE_BLOCK:
case MMC_READ_MULTIPLE_BLOCK:
return 'R';
case MMC_WRITE_BLOCK:
case MMC_WRITE_MULTIPLE_BLOCK:
return 'W';
default:
// Unknown opcode!!!
return 'X';
}
}
inline int check_met_mmc_async_req_legal(struct mmc_host *host, struct mmc_async_req *areq)
{
int is_legal = 0;
if (!((host == NULL) || (areq == NULL) || (areq->mrq == NULL)
|| (areq->mrq->cmd == NULL) || (areq->mrq->data == NULL)
|| (host->card == NULL))) {
is_legal = 1;
}
return is_legal;
}
inline int check_met_mmc_blk_data_legal(struct mmc_blk_data *md)
{
int is_legal = 0;
if (!((md == NULL) || (md->disk == NULL))) {
is_legal = 1;
}
return is_legal;
}
inline int check_met_mmc_req_legal(struct mmc_host *host, struct mmc_request *req)
{
int is_legal = 0;
if (!((host == NULL) || (req == NULL) || (req->cmd == NULL)
|| (req->data == NULL) || (host->card == NULL))) {
is_legal = 1;
}
return is_legal;
}
void met_mmc_insert(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_insert, md, areq, type);
#endif
}
void met_mmc_dma_map(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_dma_map, md, areq, type);
#endif
}
//void met_mmc_issue(struct mmc_host *host, struct mmc_async_req *areq)
//{
// struct mmc_blk_data *md;
// char type;
//
// if (!check_met_mmc_async_req_legal(host, areq))
// return;
//
// md = mmc_get_drvdata(host->card);
//
// type = mmc_get_rw_type(areq->mrq->cmd->opcode);
// if (type == 'X')
// return;
//
// MET_FTRACE_PRINTK(met_mmc_issue, md, areq, type);
//}
void met_mmc_issue(struct mmc_host *host, struct mmc_request *req)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_req_legal(host, req))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(req->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_issue, md, req, type);
#endif
}
void met_mmc_send_cmd(struct mmc_host *host, struct mmc_command *cmd)
{
struct mmc_blk_data *md = mmc_get_drvdata(host->card);
char type;
type = mmc_get_rw_type(cmd->opcode);
if (type == 'X')
return;
trace_printk("%d,%d %c %d + %d [%s]\n",
md->disk->major, md->disk->first_minor, type,
cmd->arg, cmd->data->blocks,
current->comm);
}
void met_mmc_xfr_done(struct mmc_host *host, struct mmc_command *cmd)
{
struct mmc_blk_data *md=mmc_get_drvdata(host->card);
char type;
type = mmc_get_rw_type(cmd->opcode);
if (type == 'X')
return;
trace_printk("%d,%d %c %d + %d [%s]\n",
md->disk->major, md->disk->first_minor, type,
cmd->arg, cmd->data->blocks,
current->comm);
}
void met_mmc_wait_xfr(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md = mmc_get_drvdata(host->card);
char type;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
trace_printk("%d,%d %c %d + %d [%s]\n",
md->disk->major, md->disk->first_minor, type,
areq->mrq->cmd->arg, areq->mrq->data->blocks,
current->comm);
}
void met_mmc_tuning_start(struct mmc_host *host, struct mmc_command *cmd)
{
struct mmc_blk_data *md = mmc_get_drvdata(host->card);
char type;
type = mmc_get_rw_type(cmd->opcode);
if (type == 'X')
return;
trace_printk("%d,%d %c %d + %d [%s]\n",
md->disk->major, md->disk->first_minor, type,
cmd->arg, cmd->data->blocks,
current->comm);
}
void met_mmc_tuning_end(struct mmc_host *host, struct mmc_command *cmd)
{
struct mmc_blk_data *md = mmc_get_drvdata(host->card);
char type;
type = mmc_get_rw_type(cmd->opcode);
if (type == 'X')
return;
trace_printk("%d,%d %c %d + %d [%s]\n",
md->disk->major, md->disk->first_minor, type,
cmd->arg, cmd->data->blocks,
current->comm);
}
void met_mmc_complete(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_complete, md, areq, type);
#endif
}
void met_mmc_dma_unmap_start(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_dma_unmap_start, md, areq, type);
#endif
}
void met_mmc_dma_unmap_stop(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_dma_unmap_stop, md, areq, type);
#endif
}
void met_mmc_continue_req_end(struct mmc_host *host, struct mmc_async_req *areq)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_continue_req_end, md, areq, type);
#endif
}
void met_mmc_dma_stop(struct mmc_host *host, struct mmc_async_req *areq, unsigned int bd_num)
{
struct mmc_blk_data *md;
char type;
if (!check_met_mmc_async_req_legal(host, areq))
return;
md = mmc_get_drvdata(host->card);
if (!check_met_mmc_blk_data_legal(md))
return;
type = mmc_get_rw_type(areq->mrq->cmd->opcode);
if (type == 'X')
return;
#ifndef CONFIG_MTK_FPGA
MET_FTRACE_PRINTK(met_mmc_dma_stop, md, areq, type, bd_num);
#endif
}
//void met_mmc_end(struct mmc_host *host, struct mmc_async_req *areq)
//{
// struct mmc_blk_data *md;
// char type;
//
// if (areq && areq->mrq && host && host->card) {
// type = mmc_get_rw_type(areq->mrq->cmd->opcode);
// if (type == 'X')
// return;
//
// md = mmc_get_drvdata(host->card);
//
// if (areq && areq->mrq)
// {
// trace_printk("%d,%d %c %d + %d [%s]\n",
// md->disk->major, md->disk->first_minor, type,
// areq->mrq->cmd->arg, areq->mrq->data->blocks,
// current->comm);
// }
// }
//}
static inline void mmc_blk_clear_packed(struct mmc_queue_req *mqrq)
{
struct mmc_packed *packed = mqrq->packed;
BUG_ON(!packed);
mqrq->cmd_type = MMC_PACKED_NONE;
packed->nr_entries = MMC_PACKED_NR_ZERO;
packed->idx_failure = MMC_PACKED_NR_IDX;
packed->retries = 0;
packed->blocks = 0;
}
static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
{
struct mmc_blk_data *md;
mutex_lock(&open_lock);
md = disk->private_data;
if (md && md->usage == 0)
md = NULL;
if (md)
md->usage++;
mutex_unlock(&open_lock);
return md;
}
static inline int mmc_get_devidx(struct gendisk *disk)
{
int devidx = disk->first_minor / perdev_minors;
return devidx;
}
static void mmc_blk_put(struct mmc_blk_data *md)
{
mutex_lock(&open_lock);
md->usage--;
if (md->usage == 0) {
int devidx = mmc_get_devidx(md->disk);
blk_cleanup_queue(md->queue.queue);
__clear_bit(devidx, dev_use);
put_disk(md->disk);
kfree(md);
}
mutex_unlock(&open_lock);
}
static ssize_t power_ro_lock_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev));
struct mmc_card *card = md->queue.card;
int locked = 0;
if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PERM_WP_EN)
locked = 2;
else if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_EN)
locked = 1;
ret = snprintf(buf, PAGE_SIZE, "%d\n", locked);
mmc_blk_put(md);
return ret;
}
static ssize_t power_ro_lock_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int ret;
struct mmc_blk_data *md, *part_md;
struct mmc_card *card;
unsigned long set;
if (kstrtoul(buf, 0, &set))
return -EINVAL;
if (set != 1)
return count;
md = mmc_blk_get(dev_to_disk(dev));
card = md->queue.card;
mmc_claim_host(card->host);
ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP,
card->ext_csd.boot_ro_lock |
EXT_CSD_BOOT_WP_B_PWR_WP_EN,
card->ext_csd.part_time);
if (ret)
pr_err("%s: Locking boot partition ro until next power on failed: %d\n", md->disk->disk_name, ret);
else
card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN;
mmc_release_host(card->host);
if (!ret) {
pr_info("%s: Locking boot partition ro until next power on\n",
md->disk->disk_name);
set_disk_ro(md->disk, 1);
list_for_each_entry(part_md, &md->part, part)
if (part_md->area_type == MMC_BLK_DATA_AREA_BOOT) {
pr_info("%s: Locking boot partition ro until next power on\n", part_md->disk->disk_name);
set_disk_ro(part_md->disk, 1);
}
}
mmc_blk_put(md);
return count;
}
static ssize_t force_ro_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int ret;
struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev));
ret = snprintf(buf, PAGE_SIZE, "%d\n",
get_disk_ro(dev_to_disk(dev)) ^
md->read_only);
mmc_blk_put(md);
return ret;
}
static ssize_t force_ro_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int ret;
char *end;
struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev));
unsigned long set = simple_strtoul(buf, &end, 0);
if (end == buf) {
ret = -EINVAL;
goto out;
}
set_disk_ro(dev_to_disk(dev), set || md->read_only);
ret = count;
out:
mmc_blk_put(md);
return ret;
}
static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
{
struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk);
int ret = -ENXIO;
mutex_lock(&block_mutex);
if (md) {
if (md->usage == 2)
check_disk_change(bdev);
ret = 0;
if ((mode & FMODE_WRITE) && md->read_only) {
mmc_blk_put(md);
ret = -EROFS;
}
}
mutex_unlock(&block_mutex);
return ret;
}
static void mmc_blk_release(struct gendisk *disk, fmode_t mode)
{
struct mmc_blk_data *md = disk->private_data;
mutex_lock(&block_mutex);
mmc_blk_put(md);
mutex_unlock(&block_mutex);
}
static int
mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
geo->cylinders = get_capacity(bdev->bd_disk) / (4 * 16);
geo->heads = 4;
geo->sectors = 16;
return 0;
}
struct mmc_blk_ioc_data {
struct mmc_ioc_cmd ic;
unsigned char *buf;
u64 buf_bytes;
};
static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user(
struct mmc_ioc_cmd __user *user)
{
struct mmc_blk_ioc_data *idata;
int err;
idata = kzalloc(sizeof(*idata), GFP_KERNEL);
if (!idata) {
err = -ENOMEM;
goto out;
}
if (copy_from_user(&idata->ic, user, sizeof(idata->ic))) {
err = -EFAULT;
goto idata_err;
}
idata->buf_bytes = (u64) idata->ic.blksz * idata->ic.blocks;
if (idata->buf_bytes > MMC_IOC_MAX_BYTES) {
err = -EOVERFLOW;
goto idata_err;
}
if (!idata->buf_bytes)
return idata;
idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL);
if (!idata->buf) {
err = -ENOMEM;
goto idata_err;
}
if (copy_from_user(idata->buf, (void __user *)(unsigned long)
idata->ic.data_ptr, idata->buf_bytes)) {
err = -EFAULT;
goto copy_err;
}
return idata;
copy_err:
kfree(idata->buf);
idata_err:
kfree(idata);
out:
return ERR_PTR(err);
}
static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status,
u32 retries_max)
{
int err;
u32 retry_count = 0;
if (!status || !retries_max)
return -EINVAL;
do {
err = get_card_status(card, status, 5);
if (err)
break;
if (!R1_STATUS(*status) &&
(R1_CURRENT_STATE(*status) != R1_STATE_PRG))
break; /* RPMB programming operation complete */
/*
* Rechedule to give the MMC device a chance to continue
* processing the previous command without being polled too
* frequently.
*/
usleep_range(1000, 5000);
} while (++retry_count < retries_max);
if (retry_count == retries_max)
err = -EPERM;
return err;
}
static int mmc_blk_ioctl_cmd(struct block_device *bdev,
struct mmc_ioc_cmd __user *ic_ptr)
{
struct mmc_blk_ioc_data *idata;
struct mmc_blk_data *md;
struct mmc_card *card;
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct mmc_request mrq = {NULL};
struct scatterlist sg;
int err;
int is_rpmb = false;
u32 status = 0;
/*
* The caller must have CAP_SYS_RAWIO, and must be calling this on the
* whole block device, not on a partition. This prevents overspray
* between sibling partitions.
*/
if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains))
return -EPERM;
idata = mmc_blk_ioctl_copy_from_user(ic_ptr);
if (IS_ERR(idata))
return PTR_ERR(idata);
md = mmc_blk_get(bdev->bd_disk);
if (!md) {
err = -EINVAL;
goto cmd_err;
}
if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
is_rpmb = true;
card = md->queue.card;
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto cmd_done;
}
cmd.opcode = idata->ic.opcode;
cmd.arg = idata->ic.arg;
cmd.flags = idata->ic.flags;
if (idata->buf_bytes) {
data.sg = &sg;
data.sg_len = 1;
data.blksz = idata->ic.blksz;
data.blocks = idata->ic.blocks;
sg_init_one(data.sg, idata->buf, idata->buf_bytes);
if (idata->ic.write_flag)
data.flags = MMC_DATA_WRITE;
else
data.flags = MMC_DATA_READ;
/* data.flags must already be set before doing this. */
mmc_set_data_timeout(&data, card);
/* Allow overriding the timeout_ns for empirical tuning. */
if (idata->ic.data_timeout_ns)
data.timeout_ns = idata->ic.data_timeout_ns;
if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
/*
* Pretend this is a data transfer and rely on the
* host driver to compute timeout. When all host
* drivers support cmd.cmd_timeout for R1B, this
* can be changed to:
*
* mrq.data = NULL;
* cmd.cmd_timeout = idata->ic.cmd_timeout_ms;
*/
data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000;
}
mrq.data = &data;
}
mrq.cmd = &cmd;
mmc_claim_host(card->host);
err = mmc_blk_part_switch(card, md);
if (err)
goto cmd_rel_host;
if (idata->ic.is_acmd) {
err = mmc_app_cmd(card->host, card);
if (err)
goto cmd_rel_host;
}
if (is_rpmb) {
err = mmc_set_blockcount(card, data.blocks,
idata->ic.write_flag & (1 << 31));
if (err)
goto cmd_rel_host;
}
mmc_wait_for_req(card->host, &mrq);
if (cmd.error) {
dev_err(mmc_dev(card->host), "%s: cmd error %d\n",
__func__, cmd.error);
err = cmd.error;
goto cmd_rel_host;
}
if (data.error) {
dev_err(mmc_dev(card->host), "%s: data error %d\n",
__func__, data.error);
err = data.error;
goto cmd_rel_host;
}
/*
* According to the SD specs, some commands require a delay after
* issuing the command.
*/
if (idata->ic.postsleep_min_us)
usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us);
if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) {
err = -EFAULT;
goto cmd_rel_host;
}
if (!idata->ic.write_flag) {
if (copy_to_user((void __user *)(unsigned long) idata->ic.data_ptr,
idata->buf, idata->buf_bytes)) {
err = -EFAULT;
goto cmd_rel_host;
}
}
if (is_rpmb) {
/*
* Ensure RPMB command has completed by polling CMD13
* "Send Status".
*/
err = ioctl_rpmb_card_status_poll(card, &status, 5);
if (err)
dev_err(mmc_dev(card->host),
"%s: Card Status=0x%08X, error %d\n",
__func__, status, err);
}
cmd_rel_host:
mmc_release_host(card->host);
cmd_done:
mmc_blk_put(md);
cmd_err:
kfree(idata->buf);
kfree(idata);
return err;
}
static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
int ret = -EINVAL;
if (cmd == MMC_IOC_CMD)
ret = mmc_blk_ioctl_cmd(bdev, (struct mmc_ioc_cmd __user *)arg);
return ret;
}
#ifdef CONFIG_COMPAT
static int mmc_blk_compat_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
return mmc_blk_ioctl(bdev, mode, cmd, (unsigned long) compat_ptr(arg));
}
#endif
static const struct block_device_operations mmc_bdops = {
.open = mmc_blk_open,
.release = mmc_blk_release,
.getgeo = mmc_blk_getgeo,
.owner = THIS_MODULE,
.ioctl = mmc_blk_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = mmc_blk_compat_ioctl,
#endif
};
static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md)
{
int ret;
struct mmc_blk_data *main_md = mmc_get_drvdata(card);
if (main_md->part_curr == md->part_type)
return 0;
if (mmc_card_mmc(card)) {
u8 part_config = card->ext_csd.part_config;
part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
part_config |= md->part_type;
ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_PART_CONFIG, part_config,
card->ext_csd.part_time);
if (ret)
return ret;
card->ext_csd.part_config = part_config;
}
main_md->part_curr = md->part_type;
return 0;
}
static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
{
int err;
u32 result;
__be32 *blocks;
struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
cmd.opcode = MMC_APP_CMD;
cmd.arg = card->rca << 16;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err)
return (u32)-1;
if (!mmc_host_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD))
return (u32)-1;
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_APP_SEND_NUM_WR_BLKS;
cmd.arg = 0;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
data.blksz = 4;
data.blocks = 1;
data.flags = MMC_DATA_READ;
data.sg = &sg;
data.sg_len = 1;
mmc_set_data_timeout(&data, card);
mrq.cmd = &cmd;
mrq.data = &data;
blocks = kmalloc(4, GFP_KERNEL);
if (!blocks)
return (u32)-1;
sg_init_one(&sg, blocks, 4);
mmc_wait_for_req(card->host, &mrq);
result = ntohl(*blocks);
kfree(blocks);
if (cmd.error || data.error)
result = (u32)-1;
return result;
}
u32 __mmc_sd_num_wr_blocks(struct mmc_card *card)
{
return mmc_sd_num_wr_blocks(card);
}
EXPORT_SYMBOL(__mmc_sd_num_wr_blocks);
static int send_stop(struct mmc_card *card, u32 *status)
{
struct mmc_command cmd = {0};
int err;
cmd.opcode = MMC_STOP_TRANSMISSION;
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, 5);
if (err == 0)
*status = cmd.resp[0];
return err;
}
static int get_card_status(struct mmc_card *card, u32 *status, int retries)
{
struct mmc_command cmd = {0};
int err;
cmd.opcode = MMC_SEND_STATUS;
if (!mmc_host_is_spi(card->host))
cmd.arg = card->rca << 16;
cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, retries);
if (err == 0)
*status = cmd.resp[0];
return err;
}
#define ERR_NOMEDIUM 3
#define ERR_RETRY 2
#define ERR_ABORT 1
#define ERR_CONTINUE 0
static int mmc_blk_cmd_error(struct request *req, const char *name, int error,
bool status_valid, u32 status)
{
switch (error) {
case -EILSEQ:
/* response crc error, retry the r/w cmd */
pr_err("%s: %s sending %s command, card status %#x\n",
req->rq_disk->disk_name, "response CRC error",
name, status);
return ERR_RETRY;
case -ETIMEDOUT:
pr_err("%s: %s sending %s command, card status %#x\n",
req->rq_disk->disk_name, "timed out", name, status);
/* If the status cmd initially failed, retry the r/w cmd */
if (!status_valid) {
pr_err("%s: status not valid, retrying timeout\n", req->rq_disk->disk_name);
return ERR_RETRY;
}
/*
* If it was a r/w cmd crc error, or illegal command
* (eg, issued in wrong state) then retry - we should
* have corrected the state problem above.
*/
if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) {
pr_err("%s: command error, retrying timeout\n", req->rq_disk->disk_name);
return ERR_RETRY;
}
/* Otherwise abort the command */
pr_err("%s: not retrying timeout\n", req->rq_disk->disk_name);
return ERR_ABORT;
default:
/* We don't understand the error code the driver gave us */
pr_err("%s: unknown error %d sending read/write command, card status %#x\n",
req->rq_disk->disk_name, error, status);
return ERR_ABORT;
}
}
/*
* Initial r/w and stop cmd error recovery.
* We don't know whether the card received the r/w cmd or not, so try to
* restore things back to a sane state. Essentially, we do this as follows:
* - Obtain card status. If the first attempt to obtain card status fails,
* the status word will reflect the failed status cmd, not the failed
* r/w cmd. If we fail to obtain card status, it suggests we can no
* longer communicate with the card.
* - Check the card state. If the card received the cmd but there was a
* transient problem with the response, it might still be in a data transfer
* mode. Try to send it a stop command. If this fails, we can't recover.
* - If the r/w cmd failed due to a response CRC error, it was probably
* transient, so retry the cmd.
* - If the r/w cmd timed out, but we didn't get the r/w cmd status, retry.
* - If the r/w cmd timed out, and the r/w cmd failed due to CRC error or
* illegal cmd, retry.
* Otherwise we don't understand what happened, so abort.
*/
static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
struct mmc_blk_request *brq, int *ecc_err, int *gen_err)
{
bool prev_cmd_status_valid = true;
u32 status, stop_status = 0;
int err, retry;
if (mmc_card_removed(card))
return ERR_NOMEDIUM;
/*
* Try to get card status which indicates both the card state
* and why there was no response. If the first attempt fails,
* we can't be sure the returned status is for the r/w command.
*/
for (retry = 2; retry >= 0; retry--) {
err = get_card_status(card, &status, 0);
if (!err)
break;
prev_cmd_status_valid = false;
pr_err("%s: error %d sending status command, %sing\n",
req->rq_disk->disk_name, err, retry ? "retry" : "abort");
}
/* We couldn't get a response from the card. Give up. */
if (err) {
/* Check if the card is removed */
if (mmc_detect_card_removed(card->host))
return ERR_NOMEDIUM;
return ERR_ABORT;
}
/* Flag ECC errors */
if ((status & R1_CARD_ECC_FAILED) ||
(brq->stop.resp[0] & R1_CARD_ECC_FAILED) ||
(brq->cmd.resp[0] & R1_CARD_ECC_FAILED))
*ecc_err = 1;
/* Flag General errors */
if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ)
if ((status & R1_ERROR) ||
(brq->stop.resp[0] & R1_ERROR)) {
pr_err("%s: %s: general error sending stop or status command, stop cmd response %#x, card status %#x\n",
req->rq_disk->disk_name, __func__,
brq->stop.resp[0], status);
*gen_err = 1;
}
/*
* Check the current card state. If it is in some data transfer
* mode, tell it to stop (and hopefully transition back to TRAN.)
*/
if (R1_CURRENT_STATE(status) == R1_STATE_DATA ||
R1_CURRENT_STATE(status) == R1_STATE_RCV) {
err = send_stop(card, &stop_status);
if (err)
{
get_card_status(card,&status,0);
if ((R1_CURRENT_STATE(status) == R1_STATE_TRAN) ||(R1_CURRENT_STATE(status) == R1_STATE_PRG)){
err=0;
stop_status=0;
pr_err("b card status %d \n",status);
}
else
pr_err("g card status %d \n",status);
}
if (err)
pr_err("%s: error %d sending stop command\n",
req->rq_disk->disk_name, err);
/*
* If the stop cmd also timed out, the card is probably
* not present, so abort. Other errors are bad news too.
*/
if (err)
return ERR_ABORT;
if (stop_status & R1_CARD_ECC_FAILED)
*ecc_err = 1;
if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ)
if (stop_status & R1_ERROR) {
pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n",
req->rq_disk->disk_name, __func__,
stop_status);
*gen_err = 1;
}
}
/* Check for set block count errors */
if (brq->sbc.error)
return mmc_blk_cmd_error(req, "SET_BLOCK_COUNT", brq->sbc.error,
prev_cmd_status_valid, status);
/* Check for r/w command errors */
if (brq->cmd.error)
return mmc_blk_cmd_error(req, "r/w cmd", brq->cmd.error,
prev_cmd_status_valid, status);
/* Data errors */
if (!brq->stop.error)
return ERR_CONTINUE;
/* Now for stop errors. These aren't fatal to the transfer. */
pr_err("%s: error %d sending stop command, original cmd response %#x, card status %#x\n",
req->rq_disk->disk_name, brq->stop.error,
brq->cmd.resp[0], status);
/*
* Subsitute in our own stop status as this will give the error
* state which happened during the execution of the r/w command.
*/
if (stop_status) {
brq->stop.resp[0] = stop_status;
brq->stop.error = 0;
}
return ERR_CONTINUE;
}
static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host,
int type)
{
int err;
if (md->reset_done & type)
return -EEXIST;
md->reset_done |= type;
err = mmc_hw_reset(host);
/* Ensure we switch back to the correct partition */
if (err != -EOPNOTSUPP) {
struct mmc_blk_data *main_md = mmc_get_drvdata(host->card);
int part_err;
main_md->part_curr = main_md->part_type;
part_err = mmc_blk_part_switch(host->card, md);
if (part_err) {
/*
* We have failed to get back into the correct
* partition, so we need to abort the whole request.
*/
return -ENODEV;
}
}
return err;
}
static inline void mmc_blk_reset_success(struct mmc_blk_data *md, int type)
{
md->reset_done &= ~type;
}
int mmc_access_rpmb(struct mmc_queue *mq)
{
struct mmc_blk_data *md = mq->data;
/*
* If this is a RPMB partition access, return ture
*/
if (md && md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
return true;
return false;
}
static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
unsigned int from, nr, arg;
int err = 0, type = MMC_BLK_DISCARD;
if (!mmc_can_erase(card)) {
err = -EOPNOTSUPP;
goto out;
}
from = blk_rq_pos(req);
nr = blk_rq_sectors(req);
if (mmc_can_discard(card))
arg = MMC_DISCARD_ARG;
else if (mmc_can_trim(card))
arg = MMC_TRIM_ARG;
else
arg = MMC_ERASE_ARG;
retry:
if (card->quirks & MMC_QUIRK_INAND_CMD38) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
INAND_CMD38_ARG_EXT_CSD,
arg == MMC_TRIM_ARG ?
INAND_CMD38_ARG_TRIM :
INAND_CMD38_ARG_ERASE,
0);
if (err)
goto out;
}
err = mmc_erase(card, from, nr, arg);
out:
if (err == -EIO && !mmc_blk_reset(md, card->host, type))
goto retry;
if (!err)
mmc_blk_reset_success(md, type);
blk_end_request(req, err, blk_rq_bytes(req));
return err ? 0 : 1;
}
static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
struct request *req)
{
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
unsigned int from, nr, arg, trim_arg, erase_arg;
int err = 0, type = MMC_BLK_SECDISCARD;
if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) {
err = -EOPNOTSUPP;
goto out;
}
from = blk_rq_pos(req);
nr = blk_rq_sectors(req);
/* The sanitize operation is supported at v4.5 only */
if (mmc_can_sanitize(card)) {
erase_arg = MMC_ERASE_ARG;
trim_arg = MMC_TRIM_ARG;
} else {
erase_arg = MMC_SECURE_ERASE_ARG;
trim_arg = MMC_SECURE_TRIM1_ARG;
}
if (mmc_erase_group_aligned(card, from, nr))
arg = erase_arg;
else if (mmc_can_trim(card))
arg = trim_arg;
else {
err = -EINVAL;
goto out;
}
retry:
if (card->quirks & MMC_QUIRK_INAND_CMD38) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
INAND_CMD38_ARG_EXT_CSD,
arg == MMC_SECURE_TRIM1_ARG ?
INAND_CMD38_ARG_SECTRIM1 :
INAND_CMD38_ARG_SECERASE,
0);
if (err)
goto out_retry;
}
err = mmc_erase(card, from, nr, arg);
if (err == -EIO)
goto out_retry;
if (err)
goto out;
if (arg == MMC_SECURE_TRIM1_ARG) {
if (card->quirks & MMC_QUIRK_INAND_CMD38) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
INAND_CMD38_ARG_EXT_CSD,
INAND_CMD38_ARG_SECTRIM2,
0);
if (err)
goto out_retry;
}
err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG);
if (err == -EIO)
goto out_retry;
if (err)
goto out;
}
if (mmc_can_sanitize(card)) {
trace_mmc_blk_erase_start(EXT_CSD_SANITIZE_START, 0, 0);
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_SANITIZE_START, 1, 0);
trace_mmc_blk_erase_end(EXT_CSD_SANITIZE_START, 0, 0);
}
out_retry:
if (err && !mmc_blk_reset(md, card->host, type))
goto retry;
if (!err)
mmc_blk_reset_success(md, type);
out:
blk_end_request(req, err, blk_rq_bytes(req));
return err ? 0 : 1;
}
static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
int ret = 0;
ret = mmc_flush_cache(card);
if (ret)
ret = -EIO;
blk_end_request_all(req, ret);
return ret ? 0 : 1;
}
/*
* Reformat current write as a reliable write, supporting
* both legacy and the enhanced reliable write MMC cards.
* In each transfer we'll handle only as much as a single
* reliable write can handle, thus finish the request in
* partial completions.
*/
static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq,
struct mmc_card *card,
struct request *req)
{
if (!(card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN)) {
/* Legacy mode imposes restrictions on transfers. */
if (!IS_ALIGNED(brq->cmd.arg, card->ext_csd.rel_sectors))
brq->data.blocks = 1;
if (brq->data.blocks > card->ext_csd.rel_sectors)
brq->data.blocks = card->ext_csd.rel_sectors;
else if (brq->data.blocks < card->ext_csd.rel_sectors)
brq->data.blocks = 1;
}
}
#define CMD_ERRORS \
(R1_OUT_OF_RANGE | /* Command argument out of range */ \
R1_ADDRESS_ERROR | /* Misaligned address */ \
R1_BLOCK_LEN_ERROR | /* Transferred block length incorrect */\
R1_WP_VIOLATION | /* Tried to write to protected block */ \
R1_CC_ERROR | /* Card controller error */ \
R1_ERROR) /* General/unknown error */
static int mmc_blk_err_check(struct mmc_card *card,
struct mmc_async_req *areq)
{
struct mmc_queue_req *mq_mrq = container_of(areq, struct mmc_queue_req,
mmc_active);
struct mmc_blk_request *brq = &mq_mrq->brq;
struct request *req = mq_mrq->req;
int ecc_err = 0, gen_err = 0;
/*
* sbc.error indicates a problem with the set block count
* command. No data will have been transferred.
*
* cmd.error indicates a problem with the r/w command. No
* data will have been transferred.
*
* stop.error indicates a problem with the stop command. Data
* may have been transferred, or may still be transferring.
*/
if (brq->sbc.error || brq->cmd.error || brq->stop.error ||
brq->data.error) {
switch (mmc_blk_cmd_recovery(card, req, brq, &ecc_err, &gen_err)) {
case ERR_RETRY:
return MMC_BLK_RETRY;
case ERR_ABORT:
return MMC_BLK_ABORT;
case ERR_NOMEDIUM:
return MMC_BLK_NOMEDIUM;
case ERR_CONTINUE:
break;
}
}
/*
* Check for errors relating to the execution of the
* initial command - such as address errors. No data
* has been transferred.
*/
if (brq->cmd.resp[0] & CMD_ERRORS) {
pr_err("%s: r/w command failed, status = %#x\n",
req->rq_disk->disk_name, brq->cmd.resp[0]);
return MMC_BLK_ABORT;
}
/*
* Everything else is either success, or a data error of some
* kind. If it was a write, we may have transitioned to
* program mode, which we have to wait for it to complete.
*/
if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) {
u32 status;
unsigned long timeout;
/* Check stop command response */
if (brq->stop.resp[0] & R1_ERROR) {
pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n",
req->rq_disk->disk_name, __func__,
brq->stop.resp[0]);
gen_err = 1;
}
timeout = jiffies + msecs_to_jiffies(MMC_BLK_TIMEOUT_MS);
do {
int err = get_card_status(card, &status, 5);
if (err) {
pr_err("%s: error %d requesting status\n",
req->rq_disk->disk_name, err);
return MMC_BLK_CMD_ERR;
}
if (status & R1_ERROR) {
pr_err("%s: %s: general error sending status command, card status %#x\n",
req->rq_disk->disk_name, __func__,
status);
gen_err = 1;
}
/* Timeout if the device never becomes ready for data
* and never leaves the program state.
*/
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state!"\
" %s %s\n", mmc_hostname(card->host),
req->rq_disk->disk_name, __func__);
return MMC_BLK_CMD_ERR;
}
/*
* Some cards mishandle the status bits,
* so make sure to check both the busy
* indication and the card state.
*/
} while (!(status & R1_READY_FOR_DATA) ||
(R1_CURRENT_STATE(status) == R1_STATE_PRG));
}
/* if general error occurs, retry the write operation. */
if (gen_err) {
pr_warn("%s: retrying write for general error\n",
req->rq_disk->disk_name);
return MMC_BLK_RETRY;
}
if (brq->data.error) {
pr_err("%s: error %d transferring data, sector %u, nr %u, cmd response %#x, card status %#x\n",
req->rq_disk->disk_name, brq->data.error,
(unsigned)blk_rq_pos(req),
(unsigned)blk_rq_sectors(req),
brq->cmd.resp[0], brq->stop.resp[0]);
if (rq_data_dir(req) == READ) {
if (ecc_err)
return MMC_BLK_ECC_ERR;
return MMC_BLK_DATA_ERR;
} else {
return MMC_BLK_CMD_ERR;
}
}
if (!brq->data.bytes_xfered)
return MMC_BLK_RETRY;
if (mmc_packed_cmd(mq_mrq->cmd_type)) {
if (unlikely(brq->data.blocks << 9 != brq->data.bytes_xfered))
return MMC_BLK_PARTIAL;
else
return MMC_BLK_SUCCESS;
}
if (blk_rq_bytes(req) != brq->data.bytes_xfered)
return MMC_BLK_PARTIAL;
return MMC_BLK_SUCCESS;
}
static int mmc_blk_packed_err_check(struct mmc_card *card,
struct mmc_async_req *areq)
{
struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req,
mmc_active);
struct request *req = mq_rq->req;
struct mmc_packed *packed = mq_rq->packed;
int err, check, status;
u8 *ext_csd;
BUG_ON(!packed);
packed->retries--;
check = mmc_blk_err_check(card, areq);
err = get_card_status(card, &status, 0);
if (err) {
pr_err("%s: error %d sending status command\n",
req->rq_disk->disk_name, err);
return MMC_BLK_ABORT;
}
if (status & R1_EXCEPTION_EVENT) {
ext_csd = kzalloc(512, GFP_KERNEL);
if (!ext_csd) {
pr_err("%s: unable to allocate buffer for ext_csd\n",
req->rq_disk->disk_name);
return -ENOMEM;
}
err = mmc_send_ext_csd(card, ext_csd);
if (err) {
pr_err("%s: error %d sending ext_csd\n",
req->rq_disk->disk_name, err);
check = MMC_BLK_ABORT;
goto free;
}
if ((ext_csd[EXT_CSD_EXP_EVENTS_STATUS] &
EXT_CSD_PACKED_FAILURE) &&
(ext_csd[EXT_CSD_PACKED_CMD_STATUS] &
EXT_CSD_PACKED_GENERIC_ERROR)) {
if (ext_csd[EXT_CSD_PACKED_CMD_STATUS] &
EXT_CSD_PACKED_INDEXED_ERROR) {
packed->idx_failure =
ext_csd[EXT_CSD_PACKED_FAILURE_INDEX] - 1;
check = MMC_BLK_PARTIAL;
}
pr_err("%s: packed cmd failed, nr %u, sectors %u, "
"failure index: %d\n",
req->rq_disk->disk_name, packed->nr_entries,
packed->blocks, packed->idx_failure);
}
free:
kfree(ext_csd);
}
return check;
}
static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
struct mmc_card *card,
int disable_multi,
struct mmc_queue *mq)
{
u32 readcmd, writecmd;
struct mmc_blk_request *brq = &mqrq->brq;
struct request *req = mqrq->req;
struct mmc_blk_data *md = mq->data;
bool do_data_tag;
/*
* Reliable writes are used to implement Forced Unit Access and
* are supported only on MMCs.
*/
bool do_rel_wr = (req->cmd_flags & REQ_FUA) &&
(rq_data_dir(req) == WRITE) &&
(md->flags & MMC_BLK_REL_WR);
memset(brq, 0, sizeof(struct mmc_blk_request));
brq->mrq.cmd = &brq->cmd;
brq->mrq.data = &brq->data;
brq->cmd.arg = blk_rq_pos(req);
if (!mmc_card_blockaddr(card))
brq->cmd.arg <<= 9;
brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
brq->data.blksz = 512;
brq->stop.opcode = MMC_STOP_TRANSMISSION;
brq->stop.arg = 0;
brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
brq->data.blocks = blk_rq_sectors(req);
/*
* The block layer doesn't support all sector count
* restrictions, so we need to be prepared for too big
* requests.
*/
if (brq->data.blocks > card->host->max_blk_count)
brq->data.blocks = card->host->max_blk_count;
if (brq->data.blocks > 1) {
/*
* After a read error, we redo the request one sector
* at a time in order to accurately determine which
* sectors can be read successfully.
*/
if (disable_multi)
brq->data.blocks = 1;
/* Some controllers can't do multiblock reads due to hw bugs */
if (card->host->caps2 & MMC_CAP2_NO_MULTI_READ &&
rq_data_dir(req) == READ)
brq->data.blocks = 1;
}
if (brq->data.blocks > 1 || do_rel_wr) {
/* SPI multiblock writes terminate using a special
* token, not a STOP_TRANSMISSION request.
*/
if (!mmc_host_is_spi(card->host) ||
rq_data_dir(req) == READ)
brq->mrq.stop = &brq->stop;
readcmd = MMC_READ_MULTIPLE_BLOCK;
writecmd = MMC_WRITE_MULTIPLE_BLOCK;
} else {
brq->mrq.stop = NULL;
readcmd = MMC_READ_SINGLE_BLOCK;
writecmd = MMC_WRITE_BLOCK;
}
#ifdef CONFIG_MTK_EMMC_CACHE
/* for non-cacheable system data,
* the implementation of reliable write / force prg write,
* must be applied with mutli write cmd
* */
if (mmc_card_mmc(card) && (card->ext_csd.cache_ctrl & 0x1)){
writecmd = MMC_WRITE_MULTIPLE_BLOCK;
}
#endif
if (rq_data_dir(req) == READ) {
brq->cmd.opcode = readcmd;
brq->data.flags |= MMC_DATA_READ;
} else {
brq->cmd.opcode = writecmd;
brq->data.flags |= MMC_DATA_WRITE;
}
if (do_rel_wr)
mmc_apply_rel_rw(brq, card, req);
/*
* Data tag is used only during writing meta data to speed
* up write and any subsequent read of this meta data
*/
do_data_tag = (card->ext_csd.data_tag_unit_size) &&
(req->cmd_flags & REQ_META) &&
(rq_data_dir(req) == WRITE) &&
((brq->data.blocks * brq->data.blksz) >=
card->ext_csd.data_tag_unit_size);
/*
* Pre-defined multi-block transfers are preferable to
* open ended-ones (and necessary for reliable writes).
* However, it is not sufficient to just send CMD23,
* and avoid the final CMD12, as on an error condition
* CMD12 (stop) needs to be sent anyway. This, coupled
* with Auto-CMD23 enhancements provided by some
* hosts, means that the complexity of dealing
* with this is best left to the host. If CMD23 is
* supported by card and host, we'll fill sbc in and let
* the host deal with handling it correctly. This means
* that for hosts that don't expose MMC_CAP_CMD23, no
* change of behavior will be observed.
*
* N.B: Some MMC cards experience perf degradation.
* We'll avoid using CMD23-bounded multiblock writes for
* these, while retaining features like reliable writes.
*/
if ((md->flags & MMC_BLK_CMD23) && mmc_op_multi(brq->cmd.opcode) &&
(do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23) ||
do_data_tag)) {
brq->sbc.opcode = MMC_SET_BLOCK_COUNT;
brq->sbc.arg = brq->data.blocks |
(do_rel_wr ? (1 << 31) : 0) |
(do_data_tag ? (1 << 29) : 0);
brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
brq->mrq.sbc = &brq->sbc;
}
mmc_set_data_timeout(&brq->data, card);
brq->data.sg = mqrq->sg;
brq->data.sg_len = mmc_queue_map_sg(mq, mqrq);
if (brq->data.sg_len > 1024)
pr_err("%s:%d sglen = %x\n", __func__, __LINE__, brq->data.sg_len);
/*
* Adjust the sg list so it is the same size as the
* request.
*/
if (brq->data.blocks != blk_rq_sectors(req)) {
int i, data_size = brq->data.blocks << 9;
struct scatterlist *sg;
for_each_sg(brq->data.sg, sg, brq->data.sg_len, i) {
data_size -= sg->length;
if (data_size <= 0) {
sg->length += data_size;
i++;
break;
}
}
brq->data.sg_len = i;
pr_err("%s:%d sglen = %x\n", __func__, __LINE__, brq->data.sg_len);
}
mqrq->mmc_active.mrq = &brq->mrq;
mqrq->mmc_active.err_check = mmc_blk_err_check;
mmc_queue_bounce_pre(mqrq);
}
static inline u8 mmc_calc_packed_hdr_segs(struct request_queue *q,
struct mmc_card *card)
{
unsigned int hdr_sz = mmc_large_sector(card) ? 4096 : 512;
unsigned int max_seg_sz = queue_max_segment_size(q);
unsigned int len, nr_segs = 0;
do {
len = min(hdr_sz, max_seg_sz);
hdr_sz -= len;
nr_segs++;
} while (hdr_sz);
return nr_segs;
}
static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req)
{
struct request_queue *q = mq->queue;
struct mmc_card *card = mq->card;
struct request *cur = req, *next = NULL;
struct mmc_blk_data *md = mq->data;
struct mmc_queue_req *mqrq = mq->mqrq_cur;
bool en_rel_wr = card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN;
unsigned int req_sectors = 0, phys_segments = 0;
unsigned int max_blk_count, max_phys_segs;
bool put_back = true;
u8 max_packed_rw = 0;
u8 reqs = 0;
if (!(md->flags & MMC_BLK_PACKED_CMD))
goto no_packed;
if ((rq_data_dir(cur) == WRITE) &&
mmc_host_packed_wr(card->host))
max_packed_rw = card->ext_csd.max_packed_writes;
if (max_packed_rw == 0)
goto no_packed;
if (mmc_req_rel_wr(cur) &&
(md->flags & MMC_BLK_REL_WR) && !en_rel_wr)
goto no_packed;
if (mmc_large_sector(card) &&
!IS_ALIGNED(blk_rq_sectors(cur), 8))
goto no_packed;
mmc_blk_clear_packed(mqrq);
max_blk_count = min(card->host->max_blk_count,
card->host->max_req_size >> 9);
if (unlikely(max_blk_count > 0xffff))
max_blk_count = 0xffff;
max_phys_segs = queue_max_segments(q);
req_sectors += blk_rq_sectors(cur);
phys_segments += cur->nr_phys_segments;
if (rq_data_dir(cur) == WRITE) {
req_sectors += mmc_large_sector(card) ? 8 : 1;
phys_segments += mmc_calc_packed_hdr_segs(q, card);
}
do {
if (reqs >= max_packed_rw - 1) {
put_back = false;
break;
}
spin_lock_irq(q->queue_lock);
next = blk_fetch_request(q);
spin_unlock_irq(q->queue_lock);
if (!next) {
put_back = false;
break;
}
if (mmc_large_sector(card) &&
!IS_ALIGNED(blk_rq_sectors(next), 8))
break;
if (next->cmd_flags & REQ_DISCARD ||
next->cmd_flags & REQ_FLUSH)
break;
if (rq_data_dir(cur) != rq_data_dir(next))
break;
if (mmc_req_rel_wr(next) &&
(md->flags & MMC_BLK_REL_WR) && !en_rel_wr)
break;
req_sectors += blk_rq_sectors(next);
if (req_sectors > max_blk_count)
break;
phys_segments += next->nr_phys_segments;
if (phys_segments > max_phys_segs)
break;
list_add_tail(&next->queuelist, &mqrq->packed->list);
cur = next;
reqs++;
} while (1);
if (put_back) {
spin_lock_irq(q->queue_lock);
blk_requeue_request(q, next);
spin_unlock_irq(q->queue_lock);
}
if (reqs > 0) {
list_add(&req->queuelist, &mqrq->packed->list);
mqrq->packed->nr_entries = ++reqs;
mqrq->packed->retries = reqs;
return reqs;
}
no_packed:
mqrq->cmd_type = MMC_PACKED_NONE;
return 0;
}
static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
struct mmc_card *card,
struct mmc_queue *mq)
{
struct mmc_blk_request *brq = &mqrq->brq;
struct request *req = mqrq->req;
struct request *prq;
struct mmc_blk_data *md = mq->data;
struct mmc_packed *packed = mqrq->packed;
bool do_rel_wr, do_data_tag;
u32 *packed_cmd_hdr;
u8 hdr_blocks;
u8 i = 1;
BUG_ON(!packed);
mqrq->cmd_type = MMC_PACKED_WRITE;
packed->blocks = 0;
packed->idx_failure = MMC_PACKED_NR_IDX;
packed_cmd_hdr = packed->cmd_hdr;
memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr));
packed_cmd_hdr[0] = (packed->nr_entries << 16) |
(PACKED_CMD_WR << 8) | PACKED_CMD_VER;
hdr_blocks = mmc_large_sector(card) ? 8 : 1;
/*
* Argument for each entry of packed group
*/
list_for_each_entry(prq, &packed->list, queuelist) {
do_rel_wr = mmc_req_rel_wr(prq) && (md->flags & MMC_BLK_REL_WR);
do_data_tag = (card->ext_csd.data_tag_unit_size) &&
(prq->cmd_flags & REQ_META) &&
(rq_data_dir(prq) == WRITE) &&
((brq->data.blocks * brq->data.blksz) >=
card->ext_csd.data_tag_unit_size);
/* Argument of CMD23 */
packed_cmd_hdr[(i * 2)] =
(do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) |
(do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) |
blk_rq_sectors(prq);
/* Argument of CMD18 or CMD25 */
packed_cmd_hdr[((i * 2)) + 1] =
mmc_card_blockaddr(card) ?
blk_rq_pos(prq) : blk_rq_pos(prq) << 9;
packed->blocks += blk_rq_sectors(prq);
i++;
}
memset(brq, 0, sizeof(struct mmc_blk_request));
brq->mrq.cmd = &brq->cmd;
brq->mrq.data = &brq->data;
brq->mrq.sbc = &brq->sbc;
brq->mrq.stop = &brq->stop;
brq->sbc.opcode = MMC_SET_BLOCK_COUNT;
brq->sbc.arg = MMC_CMD23_ARG_PACKED | (packed->blocks + hdr_blocks);
brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
brq->cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK;
brq->cmd.arg = blk_rq_pos(req);
if (!mmc_card_blockaddr(card))
brq->cmd.arg <<= 9;
brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
brq->data.blksz = 512;
brq->data.blocks = packed->blocks + hdr_blocks;
brq->data.flags |= MMC_DATA_WRITE;
brq->stop.opcode = MMC_STOP_TRANSMISSION;
brq->stop.arg = 0;
brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
mmc_set_data_timeout(&brq->data, card);
brq->data.sg = mqrq->sg;
brq->data.sg_len = mmc_queue_map_sg(mq, mqrq);
pr_err("%s: sglen = %d\n", __func__, brq->data.sg_len);
mqrq->mmc_active.mrq = &brq->mrq;
mqrq->mmc_active.err_check = mmc_blk_packed_err_check;
mmc_queue_bounce_pre(mqrq);
}
static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card,
struct mmc_blk_request *brq, struct request *req,
int ret)
{
struct mmc_queue_req *mq_rq;
mq_rq = container_of(brq, struct mmc_queue_req, brq);
/*
* If this is an SD card and we're writing, we can first
* mark the known good sectors as ok.
*
* If the card is not SD, we can still ok written sectors
* as reported by the controller (which might be less than
* the real number of written sectors, but never more).
*/
if (mmc_card_sd(card)) {
u32 blocks;
blocks = mmc_sd_num_wr_blocks(card);
if (blocks != (u32)-1) {
ret = blk_end_request(req, 0, blocks << 9);
}
} else {
if (!mmc_packed_cmd(mq_rq->cmd_type))
ret = blk_end_request(req, 0, brq->data.bytes_xfered);
}
return ret;
}
static int mmc_blk_end_packed_req(struct mmc_queue_req *mq_rq)
{
struct request *prq;
struct mmc_packed *packed = mq_rq->packed;
int idx = packed->idx_failure, i = 0;
int ret = 0;
BUG_ON(!packed);
while (!list_empty(&packed->list)) {
prq = list_entry_rq(packed->list.next);
if (idx == i) {
/* retry from error index */
packed->nr_entries -= idx;
mq_rq->req = prq;
ret = 1;
if (packed->nr_entries == MMC_PACKED_NR_SINGLE) {
list_del_init(&prq->queuelist);
mmc_blk_clear_packed(mq_rq);
}
return ret;
}
list_del_init(&prq->queuelist);
blk_end_request(prq, 0, blk_rq_bytes(prq));
i++;
}
mmc_blk_clear_packed(mq_rq);
return ret;
}
static void mmc_blk_abort_packed_req(struct mmc_queue_req *mq_rq)
{
struct request *prq;
struct mmc_packed *packed = mq_rq->packed;
BUG_ON(!packed);
while (!list_empty(&packed->list)) {
prq = list_entry_rq(packed->list.next);
list_del_init(&prq->queuelist);
blk_end_request(prq, -EIO, blk_rq_bytes(prq));
}
mmc_blk_clear_packed(mq_rq);
}
static void mmc_blk_revert_packed_req(struct mmc_queue *mq,
struct mmc_queue_req *mq_rq)
{
struct request *prq;
struct request_queue *q = mq->queue;
struct mmc_packed *packed = mq_rq->packed;
BUG_ON(!packed);
while (!list_empty(&packed->list)) {
prq = list_entry_rq(packed->list.prev);
if (prq->queuelist.prev != &packed->list) {
list_del_init(&prq->queuelist);
spin_lock_irq(q->queue_lock);
blk_requeue_request(mq->queue, prq);
spin_unlock_irq(q->queue_lock);
} else {
list_del_init(&prq->queuelist);
}
}
mmc_blk_clear_packed(mq_rq);
}
#if defined(FEATURE_STORAGE_PERF_INDEX)
#define PRT_TIME_PERIOD 500000000
#define UP_LIMITS_4BYTE 4294967295UL //((4*1024*1024*1024)-1)
#define ID_CNT 10
pid_t mmcqd[ID_CNT]={0};
bool start_async_req[ID_CNT] = {0};
unsigned long long start_async_req_time[ID_CNT] = {0};
static unsigned long long mmcqd_tag_t1[ID_CNT]={0}, mmccid_tag_t1=0;
unsigned long long mmcqd_t_usage_wr[ID_CNT]={0}, mmcqd_t_usage_rd[ID_CNT]={0};
unsigned int mmcqd_rq_size_wr[ID_CNT]={0}, mmcqd_rq_size_rd[ID_CNT]={0};
static unsigned int mmcqd_wr_offset_tag[ID_CNT]={0}, mmcqd_rd_offset_tag[ID_CNT]={0}, mmcqd_wr_offset[ID_CNT]={0}, mmcqd_rd_offset[ID_CNT]={0};
static unsigned int mmcqd_wr_bit[ID_CNT]={0},mmcqd_wr_tract[ID_CNT]={0};
static unsigned int mmcqd_rd_bit[ID_CNT]={0},mmcqd_rd_tract[ID_CNT]={0};
static unsigned int mmcqd_wr_break[ID_CNT]={0}, mmcqd_rd_break[ID_CNT]={0};
unsigned int mmcqd_rq_count[ID_CNT]={0}, mmcqd_wr_rq_count[ID_CNT]={0}, mmcqd_rd_rq_count[ID_CNT]={0};
extern u32 g_u32_cid[4];
#ifdef FEATURE_STORAGE_META_LOG
int check_perdev_minors = CONFIG_MMC_BLOCK_MINORS;
struct metadata_rwlogger metadata_logger[10] = {{{0}}};
#endif
unsigned int mmcqd_work_percent[ID_CNT]={0};
unsigned int mmcqd_w_throughput[ID_CNT]={0};
unsigned int mmcqd_r_throughput[ID_CNT]={0};
unsigned int mmcqd_read_clear[ID_CNT]={0};
static void g_var_clear(unsigned int idx)
{
mmcqd_t_usage_wr[idx]=0;
mmcqd_t_usage_rd[idx]=0;
mmcqd_rq_size_wr[idx]=0;
mmcqd_rq_size_rd[idx]=0;
mmcqd_rq_count[idx]=0;
mmcqd_wr_offset[idx]=0;
mmcqd_rd_offset[idx]=0;
mmcqd_wr_break[idx]=0;
mmcqd_rd_break[idx]=0;
mmcqd_wr_tract[idx]=0;
mmcqd_wr_bit[idx]=0;
mmcqd_rd_tract[idx]=0;
mmcqd_rd_bit[idx]=0;
mmcqd_wr_rq_count[idx]=0;
mmcqd_rd_rq_count[idx]=0;
}
unsigned int find_mmcqd_index(void)
{
pid_t mmcqd_pid=0;
unsigned int idx=0;
unsigned char i=0;
mmcqd_pid = task_pid_nr(current);
if(mmcqd[0] ==0) {
mmcqd[0] = mmcqd_pid;
start_async_req[0]=0;
}
for(i=0;i<ID_CNT;i++)
{
if(mmcqd_pid == mmcqd[i])
{
idx=i;
break;
}
if ((mmcqd[i] == 0) ||( i==ID_CNT-1))
{
mmcqd[i]=mmcqd_pid;
start_async_req[i]=0;
idx=i;
break;
}
}
return idx;
}
#endif
//#undef FEATURE_STORAGE_PID_LOGGER
#if defined(FEATURE_STORAGE_PID_LOGGER)
struct struct_pid_logger g_pid_logger[PID_ID_CNT]={{0,0,{0},{0},{0},{0}}};
unsigned char *page_logger = NULL;
spinlock_t g_locker;
#endif
static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
{
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
struct mmc_blk_request *brq = &mq->mqrq_cur->brq;
int ret = 1, disable_multi = 0, retry = 0, type;
enum mmc_blk_status status;
struct mmc_queue_req *mq_rq;
struct request *req = rqc;
struct mmc_async_req *areq;
const u8 packed_nr = 2;
u8 reqs = 0;
unsigned long long time1 = 0;
#if defined(FEATURE_STORAGE_PERF_INDEX)
pid_t mmcqd_pid=0;
unsigned long long t_period=0, t_usage=0;
unsigned int t_percent=0;
unsigned int perf_meter=0;
unsigned int rq_byte=0,rq_sector=0,sect_offset=0;
unsigned int diversity=0;
unsigned int idx=0;
#ifdef FEATURE_STORAGE_META_LOG
unsigned int mmcmetaindex=0;
#endif
#endif
#if defined(FEATURE_STORAGE_PID_LOGGER)
unsigned int index=0;
#endif
if (!rqc && !mq->mqrq_prev->req)
return 0;
time1 = sched_clock();
if (rqc)
reqs = mmc_blk_prep_packed_list(mq, rqc);
#if defined(FEATURE_STORAGE_PERF_INDEX)
mmcqd_pid = task_pid_nr(current);
idx = find_mmcqd_index();
mmcqd_read_clear[idx] = 1;
if(mmccid_tag_t1==0)
mmccid_tag_t1 = time1;
t_period = time1 - mmccid_tag_t1;
if(t_period >= (unsigned long long )((PRT_TIME_PERIOD)*(unsigned long long )10))
{
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "MMC Queue Thread:%d, %d, %d, %d, %d \n", mmcqd[0], mmcqd[1], mmcqd[2], mmcqd[3], mmcqd[4]);
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "MMC CID: %lx %lx %lx %lx \n", g_u32_cid[0], g_u32_cid[1], g_u32_cid[2], g_u32_cid[3]);
mmccid_tag_t1 = time1;
}
if(mmcqd_tag_t1[idx]==0)
mmcqd_tag_t1[idx] = time1;
t_period = time1 - mmcqd_tag_t1[idx];
if(t_period >= (unsigned long long )PRT_TIME_PERIOD)
{
mmcqd_read_clear[idx] = 2;
mmcqd_work_percent[idx] = 1;
mmcqd_r_throughput[idx] = 0;
mmcqd_w_throughput[idx] = 0;
t_usage = mmcqd_t_usage_wr [idx] + mmcqd_t_usage_rd[idx];
if(t_period > t_usage*100)
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Workload < 1%%, duty %lld, period %lld, req_cnt=%d \n", mmcqd[idx], t_usage, t_period, mmcqd_rq_count[idx]);
else
{
do_div(t_period, 100); //boundary issue
t_percent =((unsigned int)t_usage)/((unsigned int)t_period);
mmcqd_work_percent[idx] = t_percent;
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Workload=%d%%, duty %lld, period %lld00, req_cnt=%d \n", mmcqd[idx], t_percent, t_usage, t_period, mmcqd_rq_count[idx]); //period %lld00 == period %lld x100
}
if(mmcqd_wr_rq_count[idx] >= 2)
{
diversity = mmcqd_wr_offset[idx]/(mmcqd_wr_rq_count[idx]-1);
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Write Diversity=%d sectors offset, req_cnt=%d, break_cnt=%d, tract_cnt=%d, bit_cnt=%d\n", mmcqd[idx], diversity, mmcqd_wr_rq_count[idx], mmcqd_wr_break[idx], mmcqd_wr_tract[idx], mmcqd_wr_bit[idx]);
}
if(mmcqd_rd_rq_count[idx] >= 2)
{
diversity = mmcqd_rd_offset[idx]/(mmcqd_rd_rq_count[idx]-1);
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Read Diversity=%d sectors offset, req_cnt=%d, break_cnt=%d, tract_cnt=%d, bit_cnt=%d\n", mmcqd[idx], diversity, mmcqd_rd_rq_count[idx], mmcqd_rd_break[idx], mmcqd_rd_tract[idx], mmcqd_rd_bit[idx]);
}
if(mmcqd_t_usage_wr[idx])
{
do_div(mmcqd_t_usage_wr[idx], 1000000); //boundary issue
if(mmcqd_t_usage_wr[idx]) // discard print if duration will <1ms
{
perf_meter = (mmcqd_rq_size_wr[idx])/((unsigned int)mmcqd_t_usage_wr[idx]); //kb/s
mmcqd_w_throughput[idx] = perf_meter;
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Write Throughput=%d kB/s, size: %d bytes, time:%lld ms\n", mmcqd[idx], perf_meter, mmcqd_rq_size_wr[idx], mmcqd_t_usage_wr[idx]);
}
}
if(mmcqd_t_usage_rd[idx])
{
do_div(mmcqd_t_usage_rd[idx], 1000000); //boundary issue
if(mmcqd_t_usage_rd[idx]) // discard print if duration will <1ms
{
perf_meter = (mmcqd_rq_size_rd[idx])/((unsigned int)mmcqd_t_usage_rd[idx]); //kb/s
mmcqd_r_throughput[idx] = perf_meter;
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Read Throughput=%d kB/s, size: %d bytes, time:%lld ms\n", mmcqd[idx], perf_meter, mmcqd_rq_size_rd[idx], mmcqd_t_usage_rd[idx]);
}
}
mmcqd_tag_t1[idx]=time1;
g_var_clear(idx);
#ifdef FEATURE_STORAGE_META_LOG
mmcmetaindex = mmc_get_devidx(md->disk);
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd metarw WR:%d NWR:%d HR:%d WDR:%d HDR:%d WW:%d NWW:%d HW:%d\n",
metadata_logger[mmcmetaindex].metadata_rw_logger[0], metadata_logger[mmcmetaindex].metadata_rw_logger[1],
metadata_logger[mmcmetaindex].metadata_rw_logger[2], metadata_logger[mmcmetaindex].metadata_rw_logger[3],
metadata_logger[mmcmetaindex].metadata_rw_logger[4], metadata_logger[mmcmetaindex].metadata_rw_logger[5],
metadata_logger[mmcmetaindex].metadata_rw_logger[6], metadata_logger[mmcmetaindex].metadata_rw_logger[7]);
clear_metadata_rw_status(md->disk->first_minor);
#endif
#if defined(FEATURE_STORAGE_PID_LOGGER)
do {
int i;
for(index=0; index<PID_ID_CNT; index++) {
if( g_pid_logger[index].current_pid!=0 && g_pid_logger[index].current_pid == mmcqd_pid)
break;
}
if( index == PID_ID_CNT )
break;
for( i=0; i<PID_LOGGER_COUNT; i++) {
//printk(KERN_INFO"hank mmcqd %d %d", g_pid_logger[index].pid_logger[i], mmcqd_pid);
if( g_pid_logger[index].pid_logger[i] == 0)
break;
sprintf (g_pid_logger[index].pid_buffer+i*37, "{%05d:%05d:%08d:%05d:%08d}", g_pid_logger[index].pid_logger[i], g_pid_logger[index].pid_logger_counter[i], g_pid_logger[index].pid_logger_length[i], g_pid_logger[index].pid_logger_r_counter[i], g_pid_logger[index].pid_logger_r_length[i]);
}
if( i != 0) {
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd pid:%d %s\n", g_pid_logger[index].current_pid, g_pid_logger[index].pid_buffer);
//xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "sizeof(&(g_pid_logger[index].pid_logger)):%d\n", sizeof(unsigned short)*PID_LOGGER_COUNT);
//memset( &(g_pid_logger[index].pid_logger), 0, sizeof(struct struct_pid_logger)-(unsigned long)&(((struct struct_pid_logger *)0)->pid_logger));
memset( &(g_pid_logger[index].pid_logger), 0, sizeof(unsigned short)*PID_LOGGER_COUNT);
memset( &(g_pid_logger[index].pid_logger_counter), 0, sizeof(unsigned short)*PID_LOGGER_COUNT);
memset( &(g_pid_logger[index].pid_logger_length), 0, sizeof(unsigned int)*PID_LOGGER_COUNT);
memset( &(g_pid_logger[index].pid_logger_r_counter), 0, sizeof(unsigned short)*PID_LOGGER_COUNT);
memset( &(g_pid_logger[index].pid_logger_r_length), 0, sizeof(unsigned int)*PID_LOGGER_COUNT);
memset( &(g_pid_logger[index].pid_buffer), 0, sizeof(char)*1024);
}
g_pid_logger[index].pid_buffer[0] = '\0';
} while(0);
#endif
#if defined(FEATURE_STORAGE_VMSTAT_LOGGER)
xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "vmstat (FP:%ld)(FD:%ld)(ND:%ld)(WB:%ld)(NW:%ld)\n",
((global_page_state(NR_FILE_PAGES)) << (PAGE_SHIFT - 10)),
((global_page_state(NR_FILE_DIRTY)) << (PAGE_SHIFT - 10)),
((global_page_state(NR_DIRTIED)) << (PAGE_SHIFT - 10)),
((global_page_state(NR_WRITEBACK)) << (PAGE_SHIFT - 10)),
((global_page_state(NR_WRITTEN)) << (PAGE_SHIFT - 10)));
#endif
}
if( rqc )
{
rq_byte = blk_rq_bytes(rqc);
rq_sector = blk_rq_sectors(rqc);
if(rq_data_dir(rqc) == WRITE)
{
if(mmcqd_wr_offset_tag[idx]>0)
{
sect_offset = abs(blk_rq_pos(rqc) - mmcqd_wr_offset_tag[idx]);
mmcqd_wr_offset[idx] += sect_offset;
if(sect_offset == 1)
mmcqd_wr_break[idx]++;
}
mmcqd_wr_offset_tag[idx] = blk_rq_pos(rqc) + rq_sector;
if(rq_sector <= 1) //512 bytes
mmcqd_wr_bit[idx] ++;
else if(rq_sector >= 1016) //508kB
mmcqd_wr_tract[idx] ++;
}
else //read
{
if(mmcqd_rd_offset_tag[idx]>0)
{
sect_offset = abs(blk_rq_pos(rqc) - mmcqd_rd_offset_tag[idx]);
mmcqd_rd_offset[idx] += sect_offset;
if(sect_offset == 1)
mmcqd_rd_break[idx]++;
}
mmcqd_rd_offset_tag[idx] = blk_rq_pos(rqc) + rq_sector;
if(rq_sector <= 1) //512 bytes
mmcqd_rd_bit[idx] ++;
else if(rq_sector >= 1016) //508kB
mmcqd_rd_tract[idx] ++;
}
}
#endif
do {
if (rqc) {
/*
* When 4KB native sector is enabled, only 8 blocks
* multiple read or write is allowed
*/
if ((brq->data.blocks & 0x07) &&
(card->ext_csd.data_sector_size == 4096)) {
pr_err("%s: Transfer size is not 4KB sector size aligned\n",
req->rq_disk->disk_name);
mq_rq = mq->mqrq_cur;
goto cmd_abort;
}
if (reqs >= packed_nr)
mmc_blk_packed_hdr_wrq_prep(mq->mqrq_cur,
card, mq);
else
mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
areq = &mq->mqrq_cur->mmc_active;
} else
areq = NULL;
areq = mmc_start_req(card->host, areq, (int *) &status);
if (!areq) {
if (status == MMC_BLK_NEW_REQUEST)
mq->flags |= MMC_QUEUE_NEW_REQUEST;
return 0;
}
mq_rq = container_of(areq, struct mmc_queue_req, mmc_active);
brq = &mq_rq->brq;
req = mq_rq->req;
type = rq_data_dir(req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE;
mmc_queue_bounce_post(mq_rq);
switch (status) {
case MMC_BLK_SUCCESS:
case MMC_BLK_PARTIAL:
/*
* A block was successfully transferred.
*/
mmc_blk_reset_success(md, type);
if (mmc_packed_cmd(mq_rq->cmd_type)) {
ret = mmc_blk_end_packed_req(mq_rq);
break;
} else {
ret = blk_end_request(req, 0,
brq->data.bytes_xfered);
}
// if (card && card->host && card->host->areq)
// met_mmc_end(card->host, card->host->areq);
/*
* If the blk_end_request function returns non-zero even
* though all data has been transferred and no errors
* were returned by the host controller, it's a bug.
*/
if (status == MMC_BLK_SUCCESS && ret) {
pr_err("%s BUG rq_tot %d d_xfer %d\n",
__func__, blk_rq_bytes(req),
brq->data.bytes_xfered);
rqc = NULL;
goto cmd_abort;
}
break;
case MMC_BLK_CMD_ERR:
ret = mmc_blk_cmd_err(md, card, brq, req, ret);
if (mmc_blk_reset(md, card->host, type))
goto cmd_abort;
if (!ret)
goto start_new_req;
break;
case MMC_BLK_RETRY:
if (retry++ < 5)
break;
/* Fall through */
case MMC_BLK_ABORT:
if (!mmc_blk_reset(md, card->host, type))
break;
goto cmd_abort;
case MMC_BLK_DATA_ERR: {
int err;
err = mmc_blk_reset(md, card->host, type);
if (!err)
break;
if (err == -ENODEV ||
mmc_packed_cmd(mq_rq->cmd_type))
goto cmd_abort;
/* Fall through */
}
case MMC_BLK_ECC_ERR:
if (brq->data.blocks > 1) {
/* Redo read one sector at a time */
pr_warning("%s: retrying using single block read\n",
req->rq_disk->disk_name);
disable_multi = 1;
break;
}
/*
* After an error, we redo I/O one sector at a
* time, so we only reach here after trying to
* read a single sector.
*/
ret = blk_end_request(req, -EIO,
brq->data.blksz);
if (!ret)
goto start_new_req;
break;
case MMC_BLK_NOMEDIUM:
goto cmd_abort;
default:
pr_err("%s: Unhandled return value (%d)",
req->rq_disk->disk_name, status);
goto cmd_abort;
}
if (ret) {
if (mmc_packed_cmd(mq_rq->cmd_type)) {
if (!mq_rq->packed->retries)
goto cmd_abort;
mmc_blk_packed_hdr_wrq_prep(mq_rq, card, mq);
mmc_start_req(card->host,
&mq_rq->mmc_active, NULL);
} else {
/*
* In case of a incomplete request
* prepare it again and resend.
*/
mmc_blk_rw_rq_prep(mq_rq, card,
disable_multi, mq);
mmc_start_req(card->host,
&mq_rq->mmc_active, NULL);
}
}
} while (ret);
return 1;
cmd_abort:
if (mmc_packed_cmd(mq_rq->cmd_type)) {
mmc_blk_abort_packed_req(mq_rq);
} else {
if (mmc_card_removed(card))
req->cmd_flags |= REQ_QUIET;
while (ret)
ret = blk_end_request(req, -EIO,
blk_rq_cur_bytes(req));
}
start_new_req:
if (rqc) {
if (mmc_card_removed(card)) {
rqc->cmd_flags |= REQ_QUIET;
blk_end_request_all(rqc, -EIO);
} else {
/*
* If current request is packed, it needs to put back.
*/
if (mmc_packed_cmd(mq->mqrq_cur->cmd_type))
mmc_blk_revert_packed_req(mq, mq->mqrq_cur);
mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
mmc_start_req(card->host,
&mq->mqrq_cur->mmc_active, NULL);
}
}
return 0;
}
static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
{
int ret;
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
struct mmc_host *host = card->host;
unsigned long flags;
unsigned int cmd_flags = req ? req->cmd_flags : 0;
#ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME
if (mmc_bus_needs_resume(card->host))
mmc_resume_bus(card->host);
#endif
if (req && !mq->mqrq_prev->req)
/* claim host only for the first request */
mmc_claim_host(card->host);
ret = mmc_blk_part_switch(card, md);
if (ret) {
if (req) {
blk_end_request_all(req, -EIO);
}
ret = 0;
goto out;
}
mq->flags &= ~MMC_QUEUE_NEW_REQUEST;
if (cmd_flags & REQ_DISCARD) {
/* complete ongoing async transfer before issuing discard */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
if (req->cmd_flags & REQ_SECURE &&
!(card->quirks & MMC_QUIRK_SEC_ERASE_TRIM_BROKEN))
ret = mmc_blk_issue_secdiscard_rq(mq, req);
else
ret = mmc_blk_issue_discard_rq(mq, req);
} else if (cmd_flags & REQ_FLUSH) {
/* complete ongoing async transfer before issuing flush */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
ret = mmc_blk_issue_flush(mq, req);
} else {
if (!req && host->areq) {
spin_lock_irqsave(&host->context_info.lock, flags);
host->context_info.is_waiting_last_req = true;
spin_unlock_irqrestore(&host->context_info.lock, flags);
}
ret = mmc_blk_issue_rw_rq(mq, req);
}
out:
if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) ||
(cmd_flags & MMC_REQ_SPECIAL_MASK))
/*
* Release host when there are no more requests
* and after special request(discard, flush) is done.
* In case sepecial request, there is no reentry to
* the 'mmc_blk_issue_rq' with 'mqrq_prev->req'.
*/
mmc_release_host(card->host);
return ret;
}
static inline int mmc_blk_readonly(struct mmc_card *card)
{
return mmc_card_readonly(card) ||
!(card->csd.cmdclass & CCC_BLOCK_WRITE);
}
//#if defined(FEATURE_STORAGE_PID_LOGGER)
//extern unsigned long get_memory_size(void);
//#endif
#ifdef CONFIG_MTK_EXTMEM
extern void* extmem_malloc_page_align(size_t bytes);
#endif
static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
struct device *parent,
sector_t size,
bool default_ro,
const char *subname,
int area_type)
{
struct mmc_blk_data *md;
int devidx, ret;
devidx = find_first_zero_bit(dev_use, max_devices);
if (devidx >= max_devices)
return ERR_PTR(-ENOSPC);
__set_bit(devidx, dev_use);
md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
if (!md) {
ret = -ENOMEM;
goto out;
}
/*
* !subname implies we are creating main mmc_blk_data that will be
* associated with mmc_card with mmc_set_drvdata. Due to device
* partitions, devidx will not coincide with a per-physical card
* index anymore so we keep track of a name index.
*/
if (!subname) {
md->name_idx = find_first_zero_bit(name_use, max_devices);
__set_bit(md->name_idx, name_use);
} else
md->name_idx = ((struct mmc_blk_data *)
dev_to_disk(parent)->private_data)->name_idx;
md->area_type = area_type;
/*
* Set the read-only status based on the supported commands
* and the write protect switch.
*/
md->read_only = mmc_blk_readonly(card);
md->disk = alloc_disk(perdev_minors);
if (md->disk == NULL) {
ret = -ENOMEM;
goto err_kfree;
}
spin_lock_init(&md->lock);
INIT_LIST_HEAD(&md->part);
md->usage = 1;
ret = mmc_init_queue(&md->queue, card, &md->lock, subname);
if (ret)
goto err_putdisk;
#if defined(FEATURE_STORAGE_PID_LOGGER)
if( !page_logger){
//num_page_logger = sizeof(struct page_pid_logger);
//page_logger = vmalloc(num_physpages*sizeof(struct page_pid_logger));
// solution: use get_memory_size to obtain the size from start pfn to max pfn
//unsigned long count = get_memory_size() >> PAGE_SHIFT;
unsigned long count = get_max_DRAM_size() >> PAGE_SHIFT;
#ifdef CONFIG_MTK_EXTMEM
page_logger = extmem_malloc_page_align(count * sizeof(struct page_pid_logger));
#else
page_logger = vmalloc(count * sizeof(struct page_pid_logger));
#endif
if( page_logger) {
memset( page_logger, -1, count*sizeof( struct page_pid_logger));
}
spin_lock_init(&g_locker);
}
#endif
#if defined(FEATURE_STORAGE_META_LOG)
check_perdev_minors = perdev_minors;
#endif
md->queue.issue_fn = mmc_blk_issue_rq;
md->queue.data = md;
md->disk->major = MMC_BLOCK_MAJOR;
md->disk->first_minor = devidx * perdev_minors;
md->disk->fops = &mmc_bdops;
md->disk->private_data = md;
md->disk->queue = md->queue.queue;
md->disk->driverfs_dev = parent;
set_disk_ro(md->disk, md->read_only || default_ro);
md->disk->flags = GENHD_FL_EXT_DEVT;
if (area_type & MMC_BLK_DATA_AREA_RPMB)
md->disk->flags |= GENHD_FL_NO_PART_SCAN;
/*
* As discussed on lkml, GENHD_FL_REMOVABLE should:
*
* - be set for removable media with permanent block devices
* - be unset for removable block devices with permanent media
*
* Since MMC block devices clearly fall under the second
* case, we do not set GENHD_FL_REMOVABLE. Userspace
* should use the block device creation/destruction hotplug
* messages to tell when the card is present.
*/
snprintf(md->disk->disk_name, sizeof(md->disk->disk_name),
"mmcblk%d%s", md->name_idx, subname ? subname : "");
if (mmc_card_mmc(card))
blk_queue_logical_block_size(md->queue.queue,
card->ext_csd.data_sector_size);
else
blk_queue_logical_block_size(md->queue.queue, 512);
set_capacity(md->disk, size);
if (mmc_host_cmd23(card->host)) {
if (mmc_card_mmc(card) ||
(mmc_card_sd(card) &&
card->scr.cmds & SD_SCR_CMD23_SUPPORT))
md->flags |= MMC_BLK_CMD23;
}
if (mmc_card_mmc(card) &&
md->flags & MMC_BLK_CMD23 &&
((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) ||
card->ext_csd.rel_sectors)) {
md->flags |= MMC_BLK_REL_WR;
blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA);
}
if (mmc_card_mmc(card) &&
(area_type == MMC_BLK_DATA_AREA_MAIN) &&
(md->flags & MMC_BLK_CMD23) &&
card->ext_csd.packed_event_en) {
if (!mmc_packed_init(&md->queue, card))
md->flags |= MMC_BLK_PACKED_CMD;
}
return md;
err_putdisk:
put_disk(md->disk);
err_kfree:
kfree(md);
out:
return ERR_PTR(ret);
}
static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
{
sector_t size;
#ifdef CONFIG_MTK_EMMC_SUPPORT
unsigned int l_reserve;
struct storage_info s_info = {0};
#endif
struct mmc_blk_data *md;
if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {
/*
* The EXT_CSD sector count is in number or 512 byte
* sectors.
*/
size = card->ext_csd.sectors;
} else {
/*
* The CSD capacity field is in units of read_blkbits.
* set_capacity takes units of 512 bytes.
*/
size = card->csd.capacity << (card->csd.read_blkbits - 9);
}
if(!mmc_card_sd(card)){
#ifdef CONFIG_MTK_EMMC_SUPPORT
msdc_get_info(EMMC_CARD_BOOT, EMMC_RESERVE, &s_info);
l_reserve = s_info.emmc_reserve;
printk("l_reserve = 0x%x\n", l_reserve);
size -= l_reserve; /*reserved for 64MB (emmc otp + emmc combo offset + reserved)*/
#endif
}
md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL,
MMC_BLK_DATA_AREA_MAIN);
return md;
}
static int mmc_blk_alloc_part(struct mmc_card *card,
struct mmc_blk_data *md,
unsigned int part_type,
sector_t size,
bool default_ro,
const char *subname,
int area_type)
{
char cap_str[10];
struct mmc_blk_data *part_md;
part_md = mmc_blk_alloc_req(card, disk_to_dev(md->disk), size, default_ro,
subname, area_type);
if (IS_ERR(part_md))
return PTR_ERR(part_md);
part_md->part_type = part_type;
list_add(&part_md->part, &md->part);
string_get_size((u64)get_capacity(part_md->disk) << 9, STRING_UNITS_2,
cap_str, sizeof(cap_str));
pr_info("%s: %s %s partition %u %s\n",
part_md->disk->disk_name, mmc_card_id(card),
mmc_card_name(card), part_md->part_type, cap_str);
return 0;
}
/* MMC Physical partitions consist of two boot partitions and
* up to four general purpose partitions.
* For each partition enabled in EXT_CSD a block device will be allocatedi
* to provide access to the partition.
*/
static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md)
{
int idx, ret = 0;
if (!mmc_card_mmc(card))
return 0;
for (idx = 0; idx < card->nr_parts; idx++) {
if (card->part[idx].size) {
ret = mmc_blk_alloc_part(card, md,
card->part[idx].part_cfg,
card->part[idx].size >> 9,
card->part[idx].force_ro,
card->part[idx].name,
card->part[idx].area_type);
if (ret)
return ret;
}
}
return ret;
}
static void mmc_blk_remove_req(struct mmc_blk_data *md)
{
struct mmc_card *card;
if (md) {
card = md->queue.card;
if (md->disk->flags & GENHD_FL_UP) {
device_remove_file(disk_to_dev(md->disk), &md->force_ro);
if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) &&
card->ext_csd.boot_ro_lockable)
device_remove_file(disk_to_dev(md->disk),
&md->power_ro_lock);
/* Stop new requests from getting into the queue */
del_gendisk(md->disk);
}
/* Then flush out any already in there */
mmc_cleanup_queue(&md->queue);
if (md->flags & MMC_BLK_PACKED_CMD)
mmc_packed_clean(&md->queue);
mmc_blk_put(md);
}
}
static void mmc_blk_remove_parts(struct mmc_card *card,
struct mmc_blk_data *md)
{
struct list_head *pos, *q;
struct mmc_blk_data *part_md;
__clear_bit(md->name_idx, name_use);
list_for_each_safe(pos, q, &md->part) {
part_md = list_entry(pos, struct mmc_blk_data, part);
list_del(pos);
mmc_blk_remove_req(part_md);
}
}
static int mmc_add_disk(struct mmc_blk_data *md)
{
int ret;
struct mmc_card *card = md->queue.card;
add_disk(md->disk);
md->force_ro.show = force_ro_show;
md->force_ro.store = force_ro_store;
sysfs_attr_init(&md->force_ro.attr);
md->force_ro.attr.name = "force_ro";
md->force_ro.attr.mode = S_IRUGO | S_IWUSR;
ret = device_create_file(disk_to_dev(md->disk), &md->force_ro);
if (ret)
goto force_ro_fail;
if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) &&
card->ext_csd.boot_ro_lockable) {
umode_t mode;
if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_DIS)
mode = S_IRUGO;
else
mode = S_IRUGO | S_IWUSR;
md->power_ro_lock.show = power_ro_lock_show;
md->power_ro_lock.store = power_ro_lock_store;
sysfs_attr_init(&md->power_ro_lock.attr);
md->power_ro_lock.attr.mode = mode;
md->power_ro_lock.attr.name =
"ro_lock_until_next_power_on";
ret = device_create_file(disk_to_dev(md->disk),
&md->power_ro_lock);
if (ret)
goto power_ro_lock_fail;
}
return ret;
power_ro_lock_fail:
device_remove_file(disk_to_dev(md->disk), &md->force_ro);
force_ro_fail:
del_gendisk(md->disk);
return ret;
}
#define CID_MANFID_SANDISK 0x2
#define CID_MANFID_TOSHIBA 0x11
#define CID_MANFID_MICRON 0x13
#define CID_MANFID_SAMSUNG 0x15
#define CID_MANFID_SANDISK_NEW 0x45
#define CID_MANFID_HYNIX 0x90
#define CID_MANFID_KSI 0x70
static const struct mmc_fixup blk_fixups[] =
{
MMC_FIXUP("SEM02G", CID_MANFID_SANDISK, 0x100, add_quirk,
MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM04G", CID_MANFID_SANDISK, 0x100, add_quirk,
MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM08G", CID_MANFID_SANDISK, 0x100, add_quirk,
MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM16G", CID_MANFID_SANDISK, 0x100, add_quirk,
MMC_QUIRK_INAND_CMD38),
MMC_FIXUP("SEM32G", CID_MANFID_SANDISK, 0x100, add_quirk,
MMC_QUIRK_INAND_CMD38),
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_NEW, CID_OEMID_ANY, add_quirk,
MMC_QUIRK_PON),
/*
* Some MMC cards experience performance degradation with CMD23
* instead of CMD12-bounded multiblock transfers. For now we'll
* black list what's bad...
* - Certain Toshiba cards.
*
* N.B. This doesn't affect SD cards.
*/
MMC_FIXUP("MMC08G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
MMC_FIXUP("MMC16G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
MMC_FIXUP("MMC32G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
/*
* Some MMC cards need longer data read timeout than indicated in CSD.
*/
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
MMC_QUIRK_LONG_READ_TIME),
MMC_FIXUP("008GE0", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_LONG_READ_TIME),
/*
* On these Samsung MoviNAND parts, performing secure erase or
* secure trim can result in unrecoverable corruption due to a
* firmware bug.
*/
MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
#ifdef CONFIG_MTK_EMMC_CACHE
/*
* Some MMC cards cache feature, cannot flush the previous cache data by force programming or reliable write
* which cannot gurrantee the strong order betwee meta data and file data.
*/
/*
* Toshiba eMMC after enable cache feature, write performance drop, because flush operation waste much time
*/
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_DISABLE_CACHE),
#endif
/* Hynix 4.41 trim will lead boot up failed. */
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_HYNIX, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_TRIM_UNSTABLE),
/* KSI PRV=0x3 trim will lead write performance drop. */
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_KSI, CID_OEMID_ANY, add_quirk_mmc_ksi_v03_skip_trim,
MMC_QUIRK_KSI_V03_SKIP_TRIM),
END_FIXUP
};
#if defined(CONFIG_MTK_EMMC_SUPPORT) && !defined(CONFIG_MTK_GPT_SCHEME_SUPPORT)
extern void emmc_create_sys_symlink (struct mmc_card *card);
#endif
static int mmc_blk_probe(struct mmc_card *card)
{
struct mmc_blk_data *md, *part_md;
char cap_str[10];
/*
* Check that the card supports the command class(es) we need.
*/
if (!(card->csd.cmdclass & CCC_BLOCK_READ))
return -ENODEV;
md = mmc_blk_alloc(card);
if (IS_ERR(md))
return PTR_ERR(md);
string_get_size((u64)get_capacity(md->disk) << 9, STRING_UNITS_2,
cap_str, sizeof(cap_str));
pr_info("%s: %s %s %s %s\n",
md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
cap_str, md->read_only ? "(ro)" : "");
if (mmc_blk_alloc_parts(card, md))
goto out;
mmc_set_drvdata(card, md);
mmc_fixup_device(card, blk_fixups);
printk("[%s]: %s by manufacturer settings, quirks=0x%x\n", __func__, md->disk->disk_name, card->quirks);
#ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME
mmc_set_bus_resume_policy(card->host, 1);
#endif
if (mmc_add_disk(md))
goto out;
list_for_each_entry(part_md, &md->part, part) {
if (mmc_add_disk(part_md))
goto out;
}
#if defined(CONFIG_MTK_EMMC_SUPPORT) && !defined(CONFIG_MTK_GPT_SCHEME_SUPPORT)
emmc_create_sys_symlink(card);
#endif
return 0;
out:
mmc_blk_remove_parts(card, md);
mmc_blk_remove_req(md);
return 0;
}
static void mmc_blk_remove(struct mmc_card *card)
{
struct mmc_blk_data *md = mmc_get_drvdata(card);
mmc_blk_remove_parts(card, md);
mmc_claim_host(card->host);
mmc_blk_part_switch(card, md);
mmc_release_host(card->host);
mmc_blk_remove_req(md);
mmc_set_drvdata(card, NULL);
#ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME
mmc_set_bus_resume_policy(card->host, 0);
#endif
}
#ifdef CONFIG_PM
static int mmc_blk_suspend(struct mmc_card *card)
{
struct mmc_blk_data *part_md;
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
mmc_queue_suspend(&md->queue);
list_for_each_entry(part_md, &md->part, part) {
mmc_queue_suspend(&part_md->queue);
}
}
return 0;
}
static int mmc_blk_resume(struct mmc_card *card)
{
struct mmc_blk_data *part_md;
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
/*
* Resume involves the card going into idle state,
* so current partition is always the main one.
*/
md->part_curr = md->part_type;
mmc_queue_resume(&md->queue);
list_for_each_entry(part_md, &md->part, part) {
mmc_queue_resume(&part_md->queue);
}
}
return 0;
}
#else
#define mmc_blk_suspend NULL
#define mmc_blk_resume NULL
#endif
static struct mmc_driver mmc_driver = {
.drv = {
.name = "mmcblk",
},
.probe = mmc_blk_probe,
.remove = mmc_blk_remove,
.suspend = mmc_blk_suspend,
.resume = mmc_blk_resume,
};
static int __init mmc_blk_init(void)
{
int res;
if (perdev_minors != CONFIG_MMC_BLOCK_MINORS)
pr_info("mmcblk: using %d minors per device\n", perdev_minors);
max_devices = 256 / perdev_minors;
res = register_blkdev(MMC_BLOCK_MAJOR, "mmc");
if (res)
goto out;
res = mmc_register_driver(&mmc_driver);
if (res)
goto out2;
return 0;
out2:
unregister_blkdev(MMC_BLOCK_MAJOR, "mmc");
out:
return res;
}
static void __exit mmc_blk_exit(void)
{
mmc_unregister_driver(&mmc_driver);
unregister_blkdev(MMC_BLOCK_MAJOR, "mmc");
}
module_init(mmc_blk_init);
module_exit(mmc_blk_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Multimedia Card (MMC) block device driver");
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