Revision 85127775a65fc58e69af0c44513937d471ccbe7b authored by Arnaldo Carvalho de Melo on 06 August 2019, 14:24:09 UTC, committed by Arnaldo Carvalho de Melo on 08 August 2019, 18:40:56 UTC
The code to disassemble BPF programs uses binutil's disassembling
routines, and those use in turn fprintf to print to a memstream FILE,
adding a newline at the end of each line, which ends up confusing the
TUI routines called from:
annotate_browser__write()
annotate_line__write()
annotate_browser__printf()
ui_browser__vprintf()
SLsmg_vprintf()
The SLsmg_vprintf() function in the slang library gets confused with the
terminating newline, so make the disasm_line__parse() function that
parses the lines produced by the BPF specific disassembler (that uses
binutil's libopcodes) and the lines produced by the objdump based
disassembler used for everything else (and that doesn't adds this
terminating newline) trim the end of the line in addition of the
beginning.
This way when disasm_line->ops.raw, i.e. for instructions without a
special scnprintf() method, we'll not have that \n getting in the way of
filling the screen right after the instruction with spaces to avoid
leaving what was on the screen before and thus garbling the annotation
screen, breaking scrolling, etc.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Fixes: 6987561c9e86 ("perf annotate: Enable annotation of BPF programs")
Link: https://lkml.kernel.org/n/tip-unbr5a5efakobfr6rhxq99ta@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 parent 6bbfe4e
rtsx_usb_ms.c
// SPDX-License-Identifier: GPL-2.0-only
/* Realtek USB Memstick Card Interface driver
*
* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
*
* Author:
* Roger Tseng <rogerable@realtek.com>
*/
#include <linux/module.h>
#include <linux/highmem.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>
#include <linux/memstick.h>
#include <linux/kthread.h>
#include <linux/rtsx_usb.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/completion.h>
#include <asm/unaligned.h>
struct rtsx_usb_ms {
struct platform_device *pdev;
struct rtsx_ucr *ucr;
struct memstick_host *msh;
struct memstick_request *req;
struct mutex host_mutex;
struct work_struct handle_req;
struct delayed_work poll_card;
u8 ssc_depth;
unsigned int clock;
int power_mode;
unsigned char ifmode;
bool eject;
bool system_suspending;
};
static inline struct device *ms_dev(struct rtsx_usb_ms *host)
{
return &(host->pdev->dev);
}
static inline void ms_clear_error(struct rtsx_usb_ms *host)
{
struct rtsx_ucr *ucr = host->ucr;
rtsx_usb_ep0_write_register(ucr, CARD_STOP,
MS_STOP | MS_CLR_ERR,
MS_STOP | MS_CLR_ERR);
rtsx_usb_clear_dma_err(ucr);
rtsx_usb_clear_fsm_err(ucr);
}
#ifdef DEBUG
static void ms_print_debug_regs(struct rtsx_usb_ms *host)
{
struct rtsx_ucr *ucr = host->ucr;
u16 i;
u8 *ptr;
/* Print MS host internal registers */
rtsx_usb_init_cmd(ucr);
/* MS_CFG to MS_INT_REG */
for (i = 0xFD40; i <= 0xFD44; i++)
rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0);
/* CARD_SHARE_MODE to CARD_GPIO */
for (i = 0xFD51; i <= 0xFD56; i++)
rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0);
/* CARD_PULL_CTLx */
for (i = 0xFD60; i <= 0xFD65; i++)
rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0);
/* CARD_DATA_SOURCE, CARD_SELECT, CARD_CLK_EN, CARD_PWR_CTL */
rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_DATA_SOURCE, 0, 0);
rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_SELECT, 0, 0);
rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_CLK_EN, 0, 0);
rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_PWR_CTL, 0, 0);
rtsx_usb_send_cmd(ucr, MODE_CR, 100);
rtsx_usb_get_rsp(ucr, 21, 100);
ptr = ucr->rsp_buf;
for (i = 0xFD40; i <= 0xFD44; i++)
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
for (i = 0xFD51; i <= 0xFD56; i++)
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
for (i = 0xFD60; i <= 0xFD65; i++)
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_DATA_SOURCE, *(ptr++));
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_SELECT, *(ptr++));
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_CLK_EN, *(ptr++));
dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_PWR_CTL, *(ptr++));
}
#else
static void ms_print_debug_regs(struct rtsx_usb_ms *host)
{
}
#endif
static int ms_pull_ctl_disable_lqfp48(struct rtsx_ucr *ucr)
{
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5);
return rtsx_usb_send_cmd(ucr, MODE_C, 100);
}
static int ms_pull_ctl_disable_qfn24(struct rtsx_ucr *ucr)
{
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x56);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59);
return rtsx_usb_send_cmd(ucr, MODE_C, 100);
}
static int ms_pull_ctl_enable_lqfp48(struct rtsx_ucr *ucr)
{
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5);
return rtsx_usb_send_cmd(ucr, MODE_C, 100);
}
static int ms_pull_ctl_enable_qfn24(struct rtsx_ucr *ucr)
{
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59);
return rtsx_usb_send_cmd(ucr, MODE_C, 100);
}
static int ms_power_on(struct rtsx_usb_ms *host)
{
struct rtsx_ucr *ucr = host->ucr;
int err;
dev_dbg(ms_dev(host), "%s\n", __func__);
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SELECT, 0x07, MS_MOD_SEL);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SHARE_MODE,
CARD_SHARE_MASK, CARD_SHARE_MS);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN,
MS_CLK_EN, MS_CLK_EN);
err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
if (err < 0)
return err;
if (CHECK_PKG(ucr, LQFP48))
err = ms_pull_ctl_enable_lqfp48(ucr);
else
err = ms_pull_ctl_enable_qfn24(ucr);
if (err < 0)
return err;
err = rtsx_usb_write_register(ucr, CARD_PWR_CTL,
POWER_MASK, PARTIAL_POWER_ON);
if (err)
return err;
usleep_range(800, 1000);
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL,
POWER_MASK, POWER_ON);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE,
MS_OUTPUT_EN, MS_OUTPUT_EN);
return rtsx_usb_send_cmd(ucr, MODE_C, 100);
}
static int ms_power_off(struct rtsx_usb_ms *host)
{
struct rtsx_ucr *ucr = host->ucr;
int err;
dev_dbg(ms_dev(host), "%s\n", __func__);
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, MS_CLK_EN, 0);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, MS_OUTPUT_EN, 0);
err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
if (err < 0)
return err;
if (CHECK_PKG(ucr, LQFP48))
return ms_pull_ctl_disable_lqfp48(ucr);
return ms_pull_ctl_disable_qfn24(ucr);
}
static int ms_transfer_data(struct rtsx_usb_ms *host, unsigned char data_dir,
u8 tpc, u8 cfg, struct scatterlist *sg)
{
struct rtsx_ucr *ucr = host->ucr;
int err;
unsigned int length = sg->length;
u16 sec_cnt = (u16)(length / 512);
u8 trans_mode, dma_dir, flag;
unsigned int pipe;
struct memstick_dev *card = host->msh->card;
dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n",
__func__, tpc, (data_dir == READ) ? "READ" : "WRITE",
length);
if (data_dir == READ) {
flag = MODE_CDIR;
dma_dir = DMA_DIR_FROM_CARD;
if (card->id.type != MEMSTICK_TYPE_PRO)
trans_mode = MS_TM_NORMAL_READ;
else
trans_mode = MS_TM_AUTO_READ;
pipe = usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN);
} else {
flag = MODE_CDOR;
dma_dir = DMA_DIR_TO_CARD;
if (card->id.type != MEMSTICK_TYPE_PRO)
trans_mode = MS_TM_NORMAL_WRITE;
else
trans_mode = MS_TM_AUTO_WRITE;
pipe = usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT);
}
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
if (card->id.type == MEMSTICK_TYPE_PRO) {
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_SECTOR_CNT_H,
0xFF, (u8)(sec_cnt >> 8));
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_SECTOR_CNT_L,
0xFF, (u8)sec_cnt);
}
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC3,
0xFF, (u8)(length >> 24));
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC2,
0xFF, (u8)(length >> 16));
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC1,
0xFF, (u8)(length >> 8));
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC0, 0xFF,
(u8)length);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL,
0x03 | DMA_PACK_SIZE_MASK, dma_dir | DMA_EN | DMA_512);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE,
0x01, RING_BUFFER);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANSFER,
0xFF, MS_TRANSFER_START | trans_mode);
rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, MS_TRANSFER,
MS_TRANSFER_END, MS_TRANSFER_END);
err = rtsx_usb_send_cmd(ucr, flag | STAGE_MS_STATUS, 100);
if (err)
return err;
err = rtsx_usb_transfer_data(ucr, pipe, sg, length,
1, NULL, 10000);
if (err)
goto err_out;
err = rtsx_usb_get_rsp(ucr, 3, 15000);
if (err)
goto err_out;
if (ucr->rsp_buf[0] & MS_TRANSFER_ERR ||
ucr->rsp_buf[1] & (MS_CRC16_ERR | MS_RDY_TIMEOUT)) {
err = -EIO;
goto err_out;
}
return 0;
err_out:
ms_clear_error(host);
return err;
}
static int ms_write_bytes(struct rtsx_usb_ms *host, u8 tpc,
u8 cfg, u8 cnt, u8 *data, u8 *int_reg)
{
struct rtsx_ucr *ucr = host->ucr;
int err, i;
dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc);
rtsx_usb_init_cmd(ucr);
for (i = 0; i < cnt; i++)
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
PPBUF_BASE2 + i, 0xFF, data[i]);
if (cnt % 2)
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
PPBUF_BASE2 + i, 0xFF, 0xFF);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE,
0x01, PINGPONG_BUFFER);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANSFER,
0xFF, MS_TRANSFER_START | MS_TM_WRITE_BYTES);
rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, MS_TRANSFER,
MS_TRANSFER_END, MS_TRANSFER_END);
rtsx_usb_add_cmd(ucr, READ_REG_CMD, MS_TRANS_CFG, 0, 0);
err = rtsx_usb_send_cmd(ucr, MODE_CR, 100);
if (err)
return err;
err = rtsx_usb_get_rsp(ucr, 2, 5000);
if (err || (ucr->rsp_buf[0] & MS_TRANSFER_ERR)) {
u8 val;
rtsx_usb_ep0_read_register(ucr, MS_TRANS_CFG, &val);
dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val);
if (int_reg)
*int_reg = val & 0x0F;
ms_print_debug_regs(host);
ms_clear_error(host);
if (!(tpc & 0x08)) {
if (val & MS_CRC16_ERR)
return -EIO;
} else {
if (!(val & 0x80)) {
if (val & (MS_INT_ERR | MS_INT_CMDNK))
return -EIO;
}
}
return -ETIMEDOUT;
}
if (int_reg)
*int_reg = ucr->rsp_buf[1] & 0x0F;
return 0;
}
static int ms_read_bytes(struct rtsx_usb_ms *host, u8 tpc,
u8 cfg, u8 cnt, u8 *data, u8 *int_reg)
{
struct rtsx_ucr *ucr = host->ucr;
int err, i;
u8 *ptr;
dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc);
rtsx_usb_init_cmd(ucr);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE,
0x01, PINGPONG_BUFFER);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANSFER,
0xFF, MS_TRANSFER_START | MS_TM_READ_BYTES);
rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, MS_TRANSFER,
MS_TRANSFER_END, MS_TRANSFER_END);
for (i = 0; i < cnt - 1; i++)
rtsx_usb_add_cmd(ucr, READ_REG_CMD, PPBUF_BASE2 + i, 0, 0);
if (cnt % 2)
rtsx_usb_add_cmd(ucr, READ_REG_CMD, PPBUF_BASE2 + cnt, 0, 0);
else
rtsx_usb_add_cmd(ucr, READ_REG_CMD,
PPBUF_BASE2 + cnt - 1, 0, 0);
rtsx_usb_add_cmd(ucr, READ_REG_CMD, MS_TRANS_CFG, 0, 0);
err = rtsx_usb_send_cmd(ucr, MODE_CR, 100);
if (err)
return err;
err = rtsx_usb_get_rsp(ucr, cnt + 2, 5000);
if (err || (ucr->rsp_buf[0] & MS_TRANSFER_ERR)) {
u8 val;
rtsx_usb_ep0_read_register(ucr, MS_TRANS_CFG, &val);
dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val);
if (int_reg && (host->ifmode != MEMSTICK_SERIAL))
*int_reg = val & 0x0F;
ms_print_debug_regs(host);
ms_clear_error(host);
if (!(tpc & 0x08)) {
if (val & MS_CRC16_ERR)
return -EIO;
} else {
if (!(val & 0x80)) {
if (val & (MS_INT_ERR | MS_INT_CMDNK))
return -EIO;
}
}
return -ETIMEDOUT;
}
ptr = ucr->rsp_buf + 1;
for (i = 0; i < cnt; i++)
data[i] = *ptr++;
if (int_reg && (host->ifmode != MEMSTICK_SERIAL))
*int_reg = *ptr & 0x0F;
return 0;
}
static int rtsx_usb_ms_issue_cmd(struct rtsx_usb_ms *host)
{
struct memstick_request *req = host->req;
int err = 0;
u8 cfg = 0, int_reg;
dev_dbg(ms_dev(host), "%s\n", __func__);
if (req->need_card_int) {
if (host->ifmode != MEMSTICK_SERIAL)
cfg = WAIT_INT;
}
if (req->long_data) {
err = ms_transfer_data(host, req->data_dir,
req->tpc, cfg, &(req->sg));
} else {
if (req->data_dir == READ)
err = ms_read_bytes(host, req->tpc, cfg,
req->data_len, req->data, &int_reg);
else
err = ms_write_bytes(host, req->tpc, cfg,
req->data_len, req->data, &int_reg);
}
if (err < 0)
return err;
if (req->need_card_int) {
if (host->ifmode == MEMSTICK_SERIAL) {
err = ms_read_bytes(host, MS_TPC_GET_INT,
NO_WAIT_INT, 1, &req->int_reg, NULL);
if (err < 0)
return err;
} else {
if (int_reg & MS_INT_CMDNK)
req->int_reg |= MEMSTICK_INT_CMDNAK;
if (int_reg & MS_INT_BREQ)
req->int_reg |= MEMSTICK_INT_BREQ;
if (int_reg & MS_INT_ERR)
req->int_reg |= MEMSTICK_INT_ERR;
if (int_reg & MS_INT_CED)
req->int_reg |= MEMSTICK_INT_CED;
}
dev_dbg(ms_dev(host), "int_reg: 0x%02x\n", req->int_reg);
}
return 0;
}
static void rtsx_usb_ms_handle_req(struct work_struct *work)
{
struct rtsx_usb_ms *host = container_of(work,
struct rtsx_usb_ms, handle_req);
struct rtsx_ucr *ucr = host->ucr;
struct memstick_host *msh = host->msh;
int rc;
if (!host->req) {
pm_runtime_get_sync(ms_dev(host));
do {
rc = memstick_next_req(msh, &host->req);
dev_dbg(ms_dev(host), "next req %d\n", rc);
if (!rc) {
mutex_lock(&ucr->dev_mutex);
if (rtsx_usb_card_exclusive_check(ucr,
RTSX_USB_MS_CARD))
host->req->error = -EIO;
else
host->req->error =
rtsx_usb_ms_issue_cmd(host);
mutex_unlock(&ucr->dev_mutex);
dev_dbg(ms_dev(host), "req result %d\n",
host->req->error);
}
} while (!rc);
pm_runtime_put_sync(ms_dev(host));
}
}
static void rtsx_usb_ms_request(struct memstick_host *msh)
{
struct rtsx_usb_ms *host = memstick_priv(msh);
dev_dbg(ms_dev(host), "--> %s\n", __func__);
if (!host->eject)
schedule_work(&host->handle_req);
}
static int rtsx_usb_ms_set_param(struct memstick_host *msh,
enum memstick_param param, int value)
{
struct rtsx_usb_ms *host = memstick_priv(msh);
struct rtsx_ucr *ucr = host->ucr;
unsigned int clock = 0;
u8 ssc_depth = 0;
int err;
dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n",
__func__, param, value);
pm_runtime_get_sync(ms_dev(host));
mutex_lock(&ucr->dev_mutex);
err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_MS_CARD);
if (err)
goto out;
switch (param) {
case MEMSTICK_POWER:
if (value == host->power_mode)
break;
if (value == MEMSTICK_POWER_ON) {
pm_runtime_get_noresume(ms_dev(host));
err = ms_power_on(host);
if (err)
pm_runtime_put_noidle(ms_dev(host));
} else if (value == MEMSTICK_POWER_OFF) {
err = ms_power_off(host);
if (!err)
pm_runtime_put_noidle(ms_dev(host));
} else
err = -EINVAL;
if (!err)
host->power_mode = value;
break;
case MEMSTICK_INTERFACE:
if (value == MEMSTICK_SERIAL) {
clock = 19000000;
ssc_depth = SSC_DEPTH_512K;
err = rtsx_usb_write_register(ucr, MS_CFG, 0x5A,
MS_BUS_WIDTH_1 | PUSH_TIME_DEFAULT);
if (err < 0)
break;
} else if (value == MEMSTICK_PAR4) {
clock = 39000000;
ssc_depth = SSC_DEPTH_1M;
err = rtsx_usb_write_register(ucr, MS_CFG, 0x5A,
MS_BUS_WIDTH_4 | PUSH_TIME_ODD |
MS_NO_CHECK_INT);
if (err < 0)
break;
} else {
err = -EINVAL;
break;
}
err = rtsx_usb_switch_clock(ucr, clock,
ssc_depth, false, true, false);
if (err < 0) {
dev_dbg(ms_dev(host), "switch clock failed\n");
break;
}
host->ssc_depth = ssc_depth;
host->clock = clock;
host->ifmode = value;
break;
default:
err = -EINVAL;
break;
}
out:
mutex_unlock(&ucr->dev_mutex);
pm_runtime_put_sync(ms_dev(host));
/* power-on delay */
if (param == MEMSTICK_POWER && value == MEMSTICK_POWER_ON) {
usleep_range(10000, 12000);
if (!host->eject)
schedule_delayed_work(&host->poll_card, 100);
}
dev_dbg(ms_dev(host), "%s: return = %d\n", __func__, err);
return err;
}
#ifdef CONFIG_PM_SLEEP
static int rtsx_usb_ms_suspend(struct device *dev)
{
struct rtsx_usb_ms *host = dev_get_drvdata(dev);
struct memstick_host *msh = host->msh;
/* Since we use rtsx_usb's resume callback to runtime resume its
* children to implement remote wakeup signaling, this causes
* rtsx_usb_ms' runtime resume callback runs after its suspend
* callback:
* rtsx_usb_ms_suspend()
* rtsx_usb_resume()
* -> rtsx_usb_ms_runtime_resume()
* -> memstick_detect_change()
*
* rtsx_usb_suspend()
*
* To avoid this, skip runtime resume/suspend if system suspend is
* underway.
*/
host->system_suspending = true;
memstick_suspend_host(msh);
return 0;
}
static int rtsx_usb_ms_resume(struct device *dev)
{
struct rtsx_usb_ms *host = dev_get_drvdata(dev);
struct memstick_host *msh = host->msh;
memstick_resume_host(msh);
host->system_suspending = false;
return 0;
}
#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_PM
static int rtsx_usb_ms_runtime_suspend(struct device *dev)
{
struct rtsx_usb_ms *host = dev_get_drvdata(dev);
if (host->system_suspending)
return 0;
if (host->msh->card || host->power_mode != MEMSTICK_POWER_OFF)
return -EAGAIN;
return 0;
}
static int rtsx_usb_ms_runtime_resume(struct device *dev)
{
struct rtsx_usb_ms *host = dev_get_drvdata(dev);
if (host->system_suspending)
return 0;
memstick_detect_change(host->msh);
return 0;
}
#endif /* CONFIG_PM */
static const struct dev_pm_ops rtsx_usb_ms_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(rtsx_usb_ms_suspend, rtsx_usb_ms_resume)
SET_RUNTIME_PM_OPS(rtsx_usb_ms_runtime_suspend, rtsx_usb_ms_runtime_resume, NULL)
};
static void rtsx_usb_ms_poll_card(struct work_struct *work)
{
struct rtsx_usb_ms *host = container_of(work, struct rtsx_usb_ms,
poll_card.work);
struct rtsx_ucr *ucr = host->ucr;
int err;
u8 val;
if (host->eject || host->power_mode != MEMSTICK_POWER_ON)
return;
pm_runtime_get_sync(ms_dev(host));
mutex_lock(&ucr->dev_mutex);
/* Check pending MS card changes */
err = rtsx_usb_read_register(ucr, CARD_INT_PEND, &val);
if (err) {
mutex_unlock(&ucr->dev_mutex);
goto poll_again;
}
/* Clear the pending */
rtsx_usb_write_register(ucr, CARD_INT_PEND,
XD_INT | MS_INT | SD_INT,
XD_INT | MS_INT | SD_INT);
mutex_unlock(&ucr->dev_mutex);
if (val & MS_INT) {
dev_dbg(ms_dev(host), "MS slot change detected\n");
memstick_detect_change(host->msh);
}
poll_again:
pm_runtime_put_sync(ms_dev(host));
if (!host->eject && host->power_mode == MEMSTICK_POWER_ON)
schedule_delayed_work(&host->poll_card, 100);
}
static int rtsx_usb_ms_drv_probe(struct platform_device *pdev)
{
struct memstick_host *msh;
struct rtsx_usb_ms *host;
struct rtsx_ucr *ucr;
int err;
ucr = usb_get_intfdata(to_usb_interface(pdev->dev.parent));
if (!ucr)
return -ENXIO;
dev_dbg(&(pdev->dev),
"Realtek USB Memstick controller found\n");
msh = memstick_alloc_host(sizeof(*host), &pdev->dev);
if (!msh)
return -ENOMEM;
host = memstick_priv(msh);
host->ucr = ucr;
host->msh = msh;
host->pdev = pdev;
host->power_mode = MEMSTICK_POWER_OFF;
platform_set_drvdata(pdev, host);
mutex_init(&host->host_mutex);
INIT_WORK(&host->handle_req, rtsx_usb_ms_handle_req);
INIT_DELAYED_WORK(&host->poll_card, rtsx_usb_ms_poll_card);
msh->request = rtsx_usb_ms_request;
msh->set_param = rtsx_usb_ms_set_param;
msh->caps = MEMSTICK_CAP_PAR4;
pm_runtime_get_noresume(ms_dev(host));
pm_runtime_set_active(ms_dev(host));
pm_runtime_enable(ms_dev(host));
err = memstick_add_host(msh);
if (err)
goto err_out;
pm_runtime_put(ms_dev(host));
return 0;
err_out:
memstick_free_host(msh);
pm_runtime_disable(ms_dev(host));
pm_runtime_put_noidle(ms_dev(host));
return err;
}
static int rtsx_usb_ms_drv_remove(struct platform_device *pdev)
{
struct rtsx_usb_ms *host = platform_get_drvdata(pdev);
struct memstick_host *msh = host->msh;
int err;
host->eject = true;
cancel_work_sync(&host->handle_req);
mutex_lock(&host->host_mutex);
if (host->req) {
dev_dbg(ms_dev(host),
"%s: Controller removed during transfer\n",
dev_name(&msh->dev));
host->req->error = -ENOMEDIUM;
do {
err = memstick_next_req(msh, &host->req);
if (!err)
host->req->error = -ENOMEDIUM;
} while (!err);
}
mutex_unlock(&host->host_mutex);
memstick_remove_host(msh);
memstick_free_host(msh);
/* Balance possible unbalanced usage count
* e.g. unconditional module removal
*/
if (pm_runtime_active(ms_dev(host)))
pm_runtime_put(ms_dev(host));
pm_runtime_disable(ms_dev(host));
platform_set_drvdata(pdev, NULL);
dev_dbg(ms_dev(host),
": Realtek USB Memstick controller has been removed\n");
return 0;
}
static struct platform_device_id rtsx_usb_ms_ids[] = {
{
.name = "rtsx_usb_ms",
}, {
/* sentinel */
}
};
MODULE_DEVICE_TABLE(platform, rtsx_usb_ms_ids);
static struct platform_driver rtsx_usb_ms_driver = {
.probe = rtsx_usb_ms_drv_probe,
.remove = rtsx_usb_ms_drv_remove,
.id_table = rtsx_usb_ms_ids,
.driver = {
.name = "rtsx_usb_ms",
.pm = &rtsx_usb_ms_pm_ops,
},
};
module_platform_driver(rtsx_usb_ms_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Roger Tseng <rogerable@realtek.com>");
MODULE_DESCRIPTION("Realtek USB Memstick Card Host Driver");
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