// SPDX-License-Identifier: GPL-2.0+
|
/*
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* Driver for Realtek PCI-Express card reader
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*
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* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
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*
|
* Author:
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* Wei WANG (wei_wang@realsil.com.cn)
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* Micky Ching (micky_ching@realsil.com.cn)
|
*/
|
|
#include <linux/blkdev.h>
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#include <linux/kthread.h>
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#include <linux/sched.h>
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#include <linux/workqueue.h>
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#include "rtsx.h"
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#include "ms.h"
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#include "sd.h"
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#include "xd.h"
|
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MODULE_DESCRIPTION("Realtek PCI-Express card reader rts5208/rts5288 driver");
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MODULE_LICENSE("GPL");
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static unsigned int delay_use = 1;
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module_param(delay_use, uint, 0644);
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MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device");
|
|
static int ss_en;
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module_param(ss_en, int, 0644);
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MODULE_PARM_DESC(ss_en, "enable selective suspend");
|
|
static int ss_interval = 50;
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module_param(ss_interval, int, 0644);
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MODULE_PARM_DESC(ss_interval, "Interval to enter ss state in seconds");
|
|
static int auto_delink_en;
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module_param(auto_delink_en, int, 0644);
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MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
|
|
static unsigned char aspm_l0s_l1_en;
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module_param(aspm_l0s_l1_en, byte, 0644);
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MODULE_PARM_DESC(aspm_l0s_l1_en, "enable device aspm");
|
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static int msi_en;
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module_param(msi_en, int, 0644);
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MODULE_PARM_DESC(msi_en, "enable msi");
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static irqreturn_t rtsx_interrupt(int irq, void *dev_id);
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/***********************************************************************
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* Host functions
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***********************************************************************/
|
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static const char *host_info(struct Scsi_Host *host)
|
{
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return "SCSI emulation for PCI-Express Mass Storage devices";
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}
|
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static int slave_alloc(struct scsi_device *sdev)
|
{
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/*
|
* Set the INQUIRY transfer length to 36. We don't use any of
|
* the extra data and many devices choke if asked for more or
|
* less than 36 bytes.
|
*/
|
sdev->inquiry_len = 36;
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return 0;
|
}
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static int slave_configure(struct scsi_device *sdev)
|
{
|
/*
|
* Scatter-gather buffers (all but the last) must have a length
|
* divisible by the bulk maxpacket size. Otherwise a data packet
|
* would end up being short, causing a premature end to the data
|
* transfer. Since high-speed bulk pipes have a maxpacket size
|
* of 512, we'll use that as the scsi device queue's DMA alignment
|
* mask. Guaranteeing proper alignment of the first buffer will
|
* have the desired effect because, except at the beginning and
|
* the end, scatter-gather buffers follow page boundaries.
|
*/
|
blk_queue_dma_alignment(sdev->request_queue, (512 - 1));
|
|
/* Set the SCSI level to at least 2. We'll leave it at 3 if that's
|
* what is originally reported. We need this to avoid confusing
|
* the SCSI layer with devices that report 0 or 1, but need 10-byte
|
* commands (ala ATAPI devices behind certain bridges, or devices
|
* which simply have broken INQUIRY data).
|
*
|
* NOTE: This means /dev/sg programs (ala cdrecord) will get the
|
* actual information. This seems to be the preference for
|
* programs like that.
|
*
|
* NOTE: This also means that /proc/scsi/scsi and sysfs may report
|
* the actual value or the modified one, depending on where the
|
* data comes from.
|
*/
|
if (sdev->scsi_level < SCSI_2) {
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sdev->scsi_level = SCSI_2;
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sdev->sdev_target->scsi_level = SCSI_2;
|
}
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|
return 0;
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}
|
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/***********************************************************************
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* /proc/scsi/ functions
|
***********************************************************************/
|
|
/* we use this macro to help us write into the buffer */
|
#undef SPRINTF
|
#define SPRINTF(args...) \
|
do { \
|
if (pos < buffer + length) \
|
pos += sprintf(pos, ## args); \
|
} while (0)
|
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/* queue a command */
|
/* This is always called with scsi_lock(host) held */
|
static int queuecommand_lck(struct scsi_cmnd *srb,
|
void (*done)(struct scsi_cmnd *))
|
{
|
struct rtsx_dev *dev = host_to_rtsx(srb->device->host);
|
struct rtsx_chip *chip = dev->chip;
|
|
/* check for state-transition errors */
|
if (chip->srb) {
|
dev_err(&dev->pci->dev, "Error: chip->srb = %p\n",
|
chip->srb);
|
return SCSI_MLQUEUE_HOST_BUSY;
|
}
|
|
/* fail the command if we are disconnecting */
|
if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
|
dev_info(&dev->pci->dev, "Fail command during disconnect\n");
|
srb->result = DID_NO_CONNECT << 16;
|
done(srb);
|
return 0;
|
}
|
|
/* enqueue the command and wake up the control thread */
|
srb->scsi_done = done;
|
chip->srb = srb;
|
complete(&dev->cmnd_ready);
|
|
return 0;
|
}
|
|
static DEF_SCSI_QCMD(queuecommand)
|
|
/***********************************************************************
|
* Error handling functions
|
***********************************************************************/
|
|
/* Command timeout and abort */
|
static int command_abort(struct scsi_cmnd *srb)
|
{
|
struct Scsi_Host *host = srb->device->host;
|
struct rtsx_dev *dev = host_to_rtsx(host);
|
struct rtsx_chip *chip = dev->chip;
|
|
dev_info(&dev->pci->dev, "%s called\n", __func__);
|
|
scsi_lock(host);
|
|
/* Is this command still active? */
|
if (chip->srb != srb) {
|
scsi_unlock(host);
|
dev_info(&dev->pci->dev, "-- nothing to abort\n");
|
return FAILED;
|
}
|
|
rtsx_set_stat(chip, RTSX_STAT_ABORT);
|
|
scsi_unlock(host);
|
|
/* Wait for the aborted command to finish */
|
wait_for_completion(&dev->notify);
|
|
return SUCCESS;
|
}
|
|
/*
|
* This invokes the transport reset mechanism to reset the state of the
|
* device
|
*/
|
static int device_reset(struct scsi_cmnd *srb)
|
{
|
struct rtsx_dev *dev = host_to_rtsx(srb->device->host);
|
|
dev_info(&dev->pci->dev, "%s called\n", __func__);
|
|
return SUCCESS;
|
}
|
|
/*
|
* this defines our host template, with which we'll allocate hosts
|
*/
|
|
static struct scsi_host_template rtsx_host_template = {
|
/* basic userland interface stuff */
|
.name = CR_DRIVER_NAME,
|
.proc_name = CR_DRIVER_NAME,
|
.info = host_info,
|
|
/* command interface -- queued only */
|
.queuecommand = queuecommand,
|
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/* error and abort handlers */
|
.eh_abort_handler = command_abort,
|
.eh_device_reset_handler = device_reset,
|
|
/* queue commands only, only one command per LUN */
|
.can_queue = 1,
|
|
/* unknown initiator id */
|
.this_id = -1,
|
|
.slave_alloc = slave_alloc,
|
.slave_configure = slave_configure,
|
|
/* lots of sg segments can be handled */
|
.sg_tablesize = SG_ALL,
|
|
/* limit the total size of a transfer to 120 KB */
|
.max_sectors = 240,
|
|
/* emulated HBA */
|
.emulated = 1,
|
|
/* we do our own delay after a device or bus reset */
|
.skip_settle_delay = 1,
|
|
/* module management */
|
.module = THIS_MODULE
|
};
|
|
static int rtsx_acquire_irq(struct rtsx_dev *dev)
|
{
|
struct rtsx_chip *chip = dev->chip;
|
|
dev_info(&dev->pci->dev, "%s: chip->msi_en = %d, pci->irq = %d\n",
|
__func__, chip->msi_en, dev->pci->irq);
|
|
if (request_irq(dev->pci->irq, rtsx_interrupt,
|
chip->msi_en ? 0 : IRQF_SHARED,
|
CR_DRIVER_NAME, dev)) {
|
dev_err(&dev->pci->dev,
|
"rtsx: unable to grab IRQ %d, disabling device\n",
|
dev->pci->irq);
|
return -1;
|
}
|
|
dev->irq = dev->pci->irq;
|
pci_intx(dev->pci, !chip->msi_en);
|
|
return 0;
|
}
|
|
/*
|
* power management
|
*/
|
static int __maybe_unused rtsx_suspend(struct device *dev_d)
|
{
|
struct pci_dev *pci = to_pci_dev(dev_d);
|
struct rtsx_dev *dev = pci_get_drvdata(pci);
|
struct rtsx_chip *chip;
|
|
if (!dev)
|
return 0;
|
|
/* lock the device pointers */
|
mutex_lock(&dev->dev_mutex);
|
|
chip = dev->chip;
|
|
rtsx_do_before_power_down(chip, PM_S3);
|
|
if (dev->irq >= 0) {
|
free_irq(dev->irq, (void *)dev);
|
dev->irq = -1;
|
}
|
|
if (chip->msi_en)
|
pci_free_irq_vectors(pci);
|
|
device_wakeup_enable(dev_d);
|
|
/* unlock the device pointers */
|
mutex_unlock(&dev->dev_mutex);
|
|
return 0;
|
}
|
|
static int __maybe_unused rtsx_resume(struct device *dev_d)
|
{
|
struct pci_dev *pci = to_pci_dev(dev_d);
|
struct rtsx_dev *dev = pci_get_drvdata(pci);
|
struct rtsx_chip *chip;
|
|
if (!dev)
|
return 0;
|
|
chip = dev->chip;
|
|
/* lock the device pointers */
|
mutex_lock(&dev->dev_mutex);
|
|
pci_set_master(pci);
|
|
if (chip->msi_en) {
|
if (pci_alloc_irq_vectors(pci, 1, 1, PCI_IRQ_MSI) < 0)
|
chip->msi_en = 0;
|
}
|
|
if (rtsx_acquire_irq(dev) < 0) {
|
/* unlock the device pointers */
|
mutex_unlock(&dev->dev_mutex);
|
return -EIO;
|
}
|
|
rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03, 0x00);
|
rtsx_init_chip(chip);
|
|
/* unlock the device pointers */
|
mutex_unlock(&dev->dev_mutex);
|
|
return 0;
|
}
|
|
static void rtsx_shutdown(struct pci_dev *pci)
|
{
|
struct rtsx_dev *dev = pci_get_drvdata(pci);
|
struct rtsx_chip *chip;
|
|
if (!dev)
|
return;
|
|
chip = dev->chip;
|
|
rtsx_do_before_power_down(chip, PM_S1);
|
|
if (dev->irq >= 0) {
|
free_irq(dev->irq, (void *)dev);
|
dev->irq = -1;
|
}
|
|
if (chip->msi_en)
|
pci_free_irq_vectors(pci);
|
|
pci_disable_device(pci);
|
}
|
|
static int rtsx_control_thread(void *__dev)
|
{
|
struct rtsx_dev *dev = __dev;
|
struct rtsx_chip *chip = dev->chip;
|
struct Scsi_Host *host = rtsx_to_host(dev);
|
|
for (;;) {
|
if (wait_for_completion_interruptible(&dev->cmnd_ready))
|
break;
|
|
/* lock the device pointers */
|
mutex_lock(&dev->dev_mutex);
|
|
/* if the device has disconnected, we are free to exit */
|
if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
|
dev_info(&dev->pci->dev, "-- rtsx-control exiting\n");
|
mutex_unlock(&dev->dev_mutex);
|
break;
|
}
|
|
/* lock access to the state */
|
scsi_lock(host);
|
|
/* has the command aborted ? */
|
if (rtsx_chk_stat(chip, RTSX_STAT_ABORT)) {
|
chip->srb->result = DID_ABORT << 16;
|
goto skip_for_abort;
|
}
|
|
scsi_unlock(host);
|
|
/* reject the command if the direction indicator
|
* is UNKNOWN
|
*/
|
if (chip->srb->sc_data_direction == DMA_BIDIRECTIONAL) {
|
dev_err(&dev->pci->dev, "UNKNOWN data direction\n");
|
chip->srb->result = DID_ERROR << 16;
|
}
|
|
/* reject if target != 0 or if LUN is higher than
|
* the maximum known LUN
|
*/
|
else if (chip->srb->device->id) {
|
dev_err(&dev->pci->dev, "Bad target number (%d:%d)\n",
|
chip->srb->device->id,
|
(u8)chip->srb->device->lun);
|
chip->srb->result = DID_BAD_TARGET << 16;
|
}
|
|
else if (chip->srb->device->lun > chip->max_lun) {
|
dev_err(&dev->pci->dev, "Bad LUN (%d:%d)\n",
|
chip->srb->device->id,
|
(u8)chip->srb->device->lun);
|
chip->srb->result = DID_BAD_TARGET << 16;
|
}
|
|
/* we've got a command, let's do it! */
|
else {
|
scsi_show_command(chip);
|
rtsx_invoke_transport(chip->srb, chip);
|
}
|
|
/* lock access to the state */
|
scsi_lock(host);
|
|
/* did the command already complete because of a disconnect? */
|
if (!chip->srb)
|
; /* nothing to do */
|
|
/* indicate that the command is done */
|
else if (chip->srb->result != DID_ABORT << 16) {
|
chip->srb->scsi_done(chip->srb);
|
} else {
|
skip_for_abort:
|
dev_err(&dev->pci->dev, "scsi command aborted\n");
|
}
|
|
if (rtsx_chk_stat(chip, RTSX_STAT_ABORT)) {
|
complete(&dev->notify);
|
|
rtsx_set_stat(chip, RTSX_STAT_IDLE);
|
}
|
|
/* finished working on this command */
|
chip->srb = NULL;
|
scsi_unlock(host);
|
|
/* unlock the device pointers */
|
mutex_unlock(&dev->dev_mutex);
|
} /* for (;;) */
|
|
/* notify the exit routine that we're actually exiting now
|
*
|
* complete()/wait_for_completion() is similar to up()/down(),
|
* except that complete() is safe in the case where the structure
|
* is getting deleted in a parallel mode of execution (i.e. just
|
* after the down() -- that's necessary for the thread-shutdown
|
* case.
|
*
|
* complete_and_exit() goes even further than this -- it is safe in
|
* the case that the thread of the caller is going away (not just
|
* the structure) -- this is necessary for the module-remove case.
|
* This is important in preemption kernels, which transfer the flow
|
* of execution immediately upon a complete().
|
*/
|
complete_and_exit(&dev->control_exit, 0);
|
}
|
|
static int rtsx_polling_thread(void *__dev)
|
{
|
struct rtsx_dev *dev = __dev;
|
struct rtsx_chip *chip = dev->chip;
|
struct sd_info *sd_card = &chip->sd_card;
|
struct xd_info *xd_card = &chip->xd_card;
|
struct ms_info *ms_card = &chip->ms_card;
|
|
sd_card->cleanup_counter = 0;
|
xd_card->cleanup_counter = 0;
|
ms_card->cleanup_counter = 0;
|
|
/* Wait until SCSI scan finished */
|
wait_timeout((delay_use + 5) * 1000);
|
|
for (;;) {
|
set_current_state(TASK_INTERRUPTIBLE);
|
schedule_timeout(msecs_to_jiffies(POLLING_INTERVAL));
|
|
/* lock the device pointers */
|
mutex_lock(&dev->dev_mutex);
|
|
/* if the device has disconnected, we are free to exit */
|
if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
|
dev_info(&dev->pci->dev, "-- rtsx-polling exiting\n");
|
mutex_unlock(&dev->dev_mutex);
|
break;
|
}
|
|
mutex_unlock(&dev->dev_mutex);
|
|
mspro_polling_format_status(chip);
|
|
/* lock the device pointers */
|
mutex_lock(&dev->dev_mutex);
|
|
rtsx_polling_func(chip);
|
|
/* unlock the device pointers */
|
mutex_unlock(&dev->dev_mutex);
|
}
|
|
complete_and_exit(&dev->polling_exit, 0);
|
}
|
|
/*
|
* interrupt handler
|
*/
|
static irqreturn_t rtsx_interrupt(int irq, void *dev_id)
|
{
|
struct rtsx_dev *dev = dev_id;
|
struct rtsx_chip *chip;
|
int retval;
|
u32 status;
|
|
if (dev)
|
chip = dev->chip;
|
else
|
return IRQ_NONE;
|
|
if (!chip)
|
return IRQ_NONE;
|
|
spin_lock(&dev->reg_lock);
|
|
retval = rtsx_pre_handle_interrupt(chip);
|
if (retval == STATUS_FAIL) {
|
spin_unlock(&dev->reg_lock);
|
if (chip->int_reg == 0xFFFFFFFF)
|
return IRQ_HANDLED;
|
return IRQ_NONE;
|
}
|
|
status = chip->int_reg;
|
|
if (dev->check_card_cd) {
|
if (!(dev->check_card_cd & status)) {
|
/* card not exist, return TRANS_RESULT_FAIL */
|
dev->trans_result = TRANS_RESULT_FAIL;
|
if (dev->done)
|
complete(dev->done);
|
goto exit;
|
}
|
}
|
|
if (status & (NEED_COMPLETE_INT | DELINK_INT)) {
|
if (status & (TRANS_FAIL_INT | DELINK_INT)) {
|
if (status & DELINK_INT)
|
RTSX_SET_DELINK(chip);
|
dev->trans_result = TRANS_RESULT_FAIL;
|
if (dev->done)
|
complete(dev->done);
|
} else if (status & TRANS_OK_INT) {
|
dev->trans_result = TRANS_RESULT_OK;
|
if (dev->done)
|
complete(dev->done);
|
} else if (status & DATA_DONE_INT) {
|
dev->trans_result = TRANS_NOT_READY;
|
if (dev->done && (dev->trans_state == STATE_TRANS_SG))
|
complete(dev->done);
|
}
|
}
|
|
exit:
|
spin_unlock(&dev->reg_lock);
|
return IRQ_HANDLED;
|
}
|
|
/* Release all our dynamic resources */
|
static void rtsx_release_resources(struct rtsx_dev *dev)
|
{
|
dev_info(&dev->pci->dev, "-- %s\n", __func__);
|
|
/* Tell the control thread to exit. The SCSI host must
|
* already have been removed so it won't try to queue
|
* any more commands.
|
*/
|
dev_info(&dev->pci->dev, "-- sending exit command to thread\n");
|
complete(&dev->cmnd_ready);
|
if (dev->ctl_thread)
|
wait_for_completion(&dev->control_exit);
|
if (dev->polling_thread)
|
wait_for_completion(&dev->polling_exit);
|
|
wait_timeout(200);
|
|
if (dev->rtsx_resv_buf) {
|
dev->chip->host_cmds_ptr = NULL;
|
dev->chip->host_sg_tbl_ptr = NULL;
|
}
|
|
if (dev->irq > 0)
|
free_irq(dev->irq, (void *)dev);
|
if (dev->chip->msi_en)
|
pci_free_irq_vectors(dev->pci);
|
if (dev->remap_addr)
|
iounmap(dev->remap_addr);
|
|
rtsx_release_chip(dev->chip);
|
kfree(dev->chip);
|
}
|
|
/*
|
* First stage of disconnect processing: stop all commands and remove
|
* the host
|
*/
|
static void quiesce_and_remove_host(struct rtsx_dev *dev)
|
{
|
struct Scsi_Host *host = rtsx_to_host(dev);
|
struct rtsx_chip *chip = dev->chip;
|
|
/*
|
* Prevent new transfers, stop the current command, and
|
* interrupt a SCSI-scan or device-reset delay
|
*/
|
mutex_lock(&dev->dev_mutex);
|
scsi_lock(host);
|
rtsx_set_stat(chip, RTSX_STAT_DISCONNECT);
|
scsi_unlock(host);
|
mutex_unlock(&dev->dev_mutex);
|
wake_up(&dev->delay_wait);
|
wait_for_completion(&dev->scanning_done);
|
|
/* Wait some time to let other threads exist */
|
wait_timeout(100);
|
|
/*
|
* queuecommand won't accept any new commands and the control
|
* thread won't execute a previously-queued command. If there
|
* is such a command pending, complete it with an error.
|
*/
|
mutex_lock(&dev->dev_mutex);
|
if (chip->srb) {
|
chip->srb->result = DID_NO_CONNECT << 16;
|
scsi_lock(host);
|
chip->srb->scsi_done(dev->chip->srb);
|
chip->srb = NULL;
|
scsi_unlock(host);
|
}
|
mutex_unlock(&dev->dev_mutex);
|
|
/* Now we own no commands so it's safe to remove the SCSI host */
|
scsi_remove_host(host);
|
}
|
|
/* Second stage of disconnect processing: deallocate all resources */
|
static void release_everything(struct rtsx_dev *dev)
|
{
|
rtsx_release_resources(dev);
|
|
/*
|
* Drop our reference to the host; the SCSI core will free it
|
* when the refcount becomes 0.
|
*/
|
scsi_host_put(rtsx_to_host(dev));
|
}
|
|
/* Thread to carry out delayed SCSI-device scanning */
|
static int rtsx_scan_thread(void *__dev)
|
{
|
struct rtsx_dev *dev = __dev;
|
struct rtsx_chip *chip = dev->chip;
|
|
/* Wait for the timeout to expire or for a disconnect */
|
if (delay_use > 0) {
|
dev_info(&dev->pci->dev,
|
"%s: waiting for device to settle before scanning\n",
|
CR_DRIVER_NAME);
|
wait_event_interruptible_timeout
|
(dev->delay_wait,
|
rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT),
|
delay_use * HZ);
|
}
|
|
/* If the device is still connected, perform the scanning */
|
if (!rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
|
scsi_scan_host(rtsx_to_host(dev));
|
dev_info(&dev->pci->dev, "%s: device scan complete\n",
|
CR_DRIVER_NAME);
|
|
/* Should we unbind if no devices were detected? */
|
}
|
|
complete_and_exit(&dev->scanning_done, 0);
|
}
|
|
static void rtsx_init_options(struct rtsx_chip *chip)
|
{
|
chip->vendor_id = chip->rtsx->pci->vendor;
|
chip->product_id = chip->rtsx->pci->device;
|
chip->adma_mode = 1;
|
chip->lun_mc = 0;
|
chip->driver_first_load = 1;
|
#ifdef HW_AUTO_SWITCH_SD_BUS
|
chip->sdio_in_charge = 0;
|
#endif
|
|
chip->mspro_formatter_enable = 1;
|
chip->ignore_sd = 0;
|
chip->use_hw_setting = 0;
|
chip->lun_mode = DEFAULT_SINGLE;
|
chip->auto_delink_en = auto_delink_en;
|
chip->ss_en = ss_en;
|
chip->ss_idle_period = ss_interval * 1000;
|
chip->remote_wakeup_en = 0;
|
chip->aspm_l0s_l1_en = aspm_l0s_l1_en;
|
chip->dynamic_aspm = 1;
|
chip->fpga_sd_sdr104_clk = CLK_200;
|
chip->fpga_sd_ddr50_clk = CLK_100;
|
chip->fpga_sd_sdr50_clk = CLK_100;
|
chip->fpga_sd_hs_clk = CLK_100;
|
chip->fpga_mmc_52m_clk = CLK_80;
|
chip->fpga_ms_hg_clk = CLK_80;
|
chip->fpga_ms_4bit_clk = CLK_80;
|
chip->fpga_ms_1bit_clk = CLK_40;
|
chip->asic_sd_sdr104_clk = 203;
|
chip->asic_sd_sdr50_clk = 98;
|
chip->asic_sd_ddr50_clk = 98;
|
chip->asic_sd_hs_clk = 98;
|
chip->asic_mmc_52m_clk = 98;
|
chip->asic_ms_hg_clk = 117;
|
chip->asic_ms_4bit_clk = 78;
|
chip->asic_ms_1bit_clk = 39;
|
chip->ssc_depth_sd_sdr104 = SSC_DEPTH_2M;
|
chip->ssc_depth_sd_sdr50 = SSC_DEPTH_2M;
|
chip->ssc_depth_sd_ddr50 = SSC_DEPTH_1M;
|
chip->ssc_depth_sd_hs = SSC_DEPTH_1M;
|
chip->ssc_depth_mmc_52m = SSC_DEPTH_1M;
|
chip->ssc_depth_ms_hg = SSC_DEPTH_1M;
|
chip->ssc_depth_ms_4bit = SSC_DEPTH_512K;
|
chip->ssc_depth_low_speed = SSC_DEPTH_512K;
|
chip->ssc_en = 1;
|
chip->sd_speed_prior = 0x01040203;
|
chip->sd_current_prior = 0x00010203;
|
chip->sd_ctl = SD_PUSH_POINT_AUTO |
|
SD_SAMPLE_POINT_AUTO |
|
SUPPORT_MMC_DDR_MODE;
|
chip->sd_ddr_tx_phase = 0;
|
chip->mmc_ddr_tx_phase = 1;
|
chip->sd_default_tx_phase = 15;
|
chip->sd_default_rx_phase = 15;
|
chip->pmos_pwr_on_interval = 200;
|
chip->sd_voltage_switch_delay = 1000;
|
chip->ms_power_class_en = 3;
|
|
chip->sd_400mA_ocp_thd = 1;
|
chip->sd_800mA_ocp_thd = 5;
|
chip->ms_ocp_thd = 2;
|
|
chip->card_drive_sel = 0x55;
|
chip->sd30_drive_sel_1v8 = 0x03;
|
chip->sd30_drive_sel_3v3 = 0x01;
|
|
chip->do_delink_before_power_down = 1;
|
chip->auto_power_down = 1;
|
chip->polling_config = 0;
|
|
chip->force_clkreq_0 = 1;
|
chip->ft2_fast_mode = 0;
|
|
chip->sdio_retry_cnt = 1;
|
|
chip->xd_timeout = 2000;
|
chip->sd_timeout = 10000;
|
chip->ms_timeout = 2000;
|
chip->mspro_timeout = 15000;
|
|
chip->power_down_in_ss = 1;
|
|
chip->sdr104_en = 1;
|
chip->sdr50_en = 1;
|
chip->ddr50_en = 1;
|
|
chip->delink_stage1_step = 100;
|
chip->delink_stage2_step = 40;
|
chip->delink_stage3_step = 20;
|
|
chip->auto_delink_in_L1 = 1;
|
chip->blink_led = 1;
|
chip->msi_en = msi_en;
|
chip->hp_watch_bios_hotplug = 0;
|
chip->max_payload = 0;
|
chip->phy_voltage = 0;
|
|
chip->support_ms_8bit = 1;
|
chip->s3_pwr_off_delay = 1000;
|
}
|
|
static int rtsx_probe(struct pci_dev *pci,
|
const struct pci_device_id *pci_id)
|
{
|
struct Scsi_Host *host;
|
struct rtsx_dev *dev;
|
int err = 0;
|
struct task_struct *th;
|
|
dev_dbg(&pci->dev, "Realtek PCI-E card reader detected\n");
|
|
err = pcim_enable_device(pci);
|
if (err < 0) {
|
dev_err(&pci->dev, "PCI enable device failed!\n");
|
return err;
|
}
|
|
err = pci_request_regions(pci, CR_DRIVER_NAME);
|
if (err < 0) {
|
dev_err(&pci->dev, "PCI request regions for %s failed!\n",
|
CR_DRIVER_NAME);
|
return err;
|
}
|
|
/*
|
* Ask the SCSI layer to allocate a host structure, with extra
|
* space at the end for our private rtsx_dev structure.
|
*/
|
host = scsi_host_alloc(&rtsx_host_template, sizeof(*dev));
|
if (!host) {
|
dev_err(&pci->dev, "Unable to allocate the scsi host\n");
|
err = -ENOMEM;
|
goto scsi_host_alloc_fail;
|
}
|
|
dev = host_to_rtsx(host);
|
memset(dev, 0, sizeof(struct rtsx_dev));
|
|
dev->chip = kzalloc(sizeof(*dev->chip), GFP_KERNEL);
|
if (!dev->chip) {
|
err = -ENOMEM;
|
goto chip_alloc_fail;
|
}
|
|
spin_lock_init(&dev->reg_lock);
|
mutex_init(&dev->dev_mutex);
|
init_completion(&dev->cmnd_ready);
|
init_completion(&dev->control_exit);
|
init_completion(&dev->polling_exit);
|
init_completion(&dev->notify);
|
init_completion(&dev->scanning_done);
|
init_waitqueue_head(&dev->delay_wait);
|
|
dev->pci = pci;
|
dev->irq = -1;
|
|
dev_info(&pci->dev, "Resource length: 0x%x\n",
|
(unsigned int)pci_resource_len(pci, 0));
|
dev->addr = pci_resource_start(pci, 0);
|
dev->remap_addr = ioremap(dev->addr, pci_resource_len(pci, 0));
|
if (!dev->remap_addr) {
|
dev_err(&pci->dev, "ioremap error\n");
|
err = -ENXIO;
|
goto ioremap_fail;
|
}
|
|
/*
|
* Using "unsigned long" cast here to eliminate gcc warning in
|
* 64-bit system
|
*/
|
dev_info(&pci->dev, "Original address: 0x%lx, remapped address: 0x%lx\n",
|
(unsigned long)(dev->addr), (unsigned long)(dev->remap_addr));
|
|
dev->rtsx_resv_buf = dmam_alloc_coherent(&pci->dev, RTSX_RESV_BUF_LEN,
|
&dev->rtsx_resv_buf_addr,
|
GFP_KERNEL);
|
if (!dev->rtsx_resv_buf) {
|
dev_err(&pci->dev, "alloc dma buffer fail\n");
|
err = -ENXIO;
|
goto dma_alloc_fail;
|
}
|
dev->chip->host_cmds_ptr = dev->rtsx_resv_buf;
|
dev->chip->host_cmds_addr = dev->rtsx_resv_buf_addr;
|
dev->chip->host_sg_tbl_ptr = dev->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
|
dev->chip->host_sg_tbl_addr = dev->rtsx_resv_buf_addr +
|
HOST_CMDS_BUF_LEN;
|
|
dev->chip->rtsx = dev;
|
|
rtsx_init_options(dev->chip);
|
|
dev_info(&pci->dev, "pci->irq = %d\n", pci->irq);
|
|
if (dev->chip->msi_en) {
|
if (pci_alloc_irq_vectors(pci, 1, 1, PCI_IRQ_MSI) < 0)
|
dev->chip->msi_en = 0;
|
}
|
|
if (rtsx_acquire_irq(dev) < 0) {
|
err = -EBUSY;
|
goto irq_acquire_fail;
|
}
|
|
pci_set_master(pci);
|
synchronize_irq(dev->irq);
|
|
rtsx_init_chip(dev->chip);
|
|
/*
|
* set the supported max_lun and max_id for the scsi host
|
* NOTE: the minimal value of max_id is 1
|
*/
|
host->max_id = 1;
|
host->max_lun = dev->chip->max_lun;
|
|
/* Start up our control thread */
|
th = kthread_run(rtsx_control_thread, dev, CR_DRIVER_NAME);
|
if (IS_ERR(th)) {
|
dev_err(&pci->dev, "Unable to start control thread\n");
|
err = PTR_ERR(th);
|
goto control_thread_fail;
|
}
|
dev->ctl_thread = th;
|
|
err = scsi_add_host(host, &pci->dev);
|
if (err) {
|
dev_err(&pci->dev, "Unable to add the scsi host\n");
|
goto scsi_add_host_fail;
|
}
|
|
/* Start up the thread for delayed SCSI-device scanning */
|
th = kthread_run(rtsx_scan_thread, dev, "rtsx-scan");
|
if (IS_ERR(th)) {
|
dev_err(&pci->dev, "Unable to start the device-scanning thread\n");
|
complete(&dev->scanning_done);
|
err = PTR_ERR(th);
|
goto scan_thread_fail;
|
}
|
|
/* Start up the thread for polling thread */
|
th = kthread_run(rtsx_polling_thread, dev, "rtsx-polling");
|
if (IS_ERR(th)) {
|
dev_err(&pci->dev, "Unable to start the device-polling thread\n");
|
err = PTR_ERR(th);
|
goto scan_thread_fail;
|
}
|
dev->polling_thread = th;
|
|
pci_set_drvdata(pci, dev);
|
|
return 0;
|
|
/* We come here if there are any problems */
|
scan_thread_fail:
|
quiesce_and_remove_host(dev);
|
scsi_add_host_fail:
|
complete(&dev->cmnd_ready);
|
wait_for_completion(&dev->control_exit);
|
control_thread_fail:
|
free_irq(dev->irq, (void *)dev);
|
rtsx_release_chip(dev->chip);
|
irq_acquire_fail:
|
dev->chip->host_cmds_ptr = NULL;
|
dev->chip->host_sg_tbl_ptr = NULL;
|
if (dev->chip->msi_en)
|
pci_free_irq_vectors(dev->pci);
|
dma_alloc_fail:
|
iounmap(dev->remap_addr);
|
ioremap_fail:
|
kfree(dev->chip);
|
chip_alloc_fail:
|
dev_err(&pci->dev, "%s failed\n", __func__);
|
scsi_host_put(host);
|
scsi_host_alloc_fail:
|
pci_release_regions(pci);
|
return err;
|
}
|
|
static void rtsx_remove(struct pci_dev *pci)
|
{
|
struct rtsx_dev *dev = pci_get_drvdata(pci);
|
|
dev_info(&pci->dev, "%s called\n", __func__);
|
|
quiesce_and_remove_host(dev);
|
release_everything(dev);
|
pci_release_regions(pci);
|
}
|
|
/* PCI IDs */
|
static const struct pci_device_id rtsx_ids[] = {
|
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x5208),
|
PCI_CLASS_OTHERS << 16, 0xFF0000 },
|
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x5288),
|
PCI_CLASS_OTHERS << 16, 0xFF0000 },
|
{ 0, },
|
};
|
|
MODULE_DEVICE_TABLE(pci, rtsx_ids);
|
|
static SIMPLE_DEV_PM_OPS(rtsx_pm_ops, rtsx_suspend, rtsx_resume);
|
|
/* pci_driver definition */
|
static struct pci_driver rtsx_driver = {
|
.name = CR_DRIVER_NAME,
|
.id_table = rtsx_ids,
|
.probe = rtsx_probe,
|
.remove = rtsx_remove,
|
.driver.pm = &rtsx_pm_ops,
|
.shutdown = rtsx_shutdown,
|
};
|
|
module_pci_driver(rtsx_driver);
|
