1 // SPDX-License-Identifier: GPL-2.0+
3 * Driver for Realtek PCI-Express card reader
5 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
8 * Wei WANG (wei_wang@realsil.com.cn)
9 * Micky Ching (micky_ching@realsil.com.cn)
12 #include <linux/blkdev.h>
13 #include <linux/kthread.h>
14 #include <linux/sched.h>
15 #include <linux/workqueue.h>
22 MODULE_DESCRIPTION("Realtek PCI-Express card reader rts5208/rts5288 driver");
23 MODULE_LICENSE("GPL");
25 static unsigned int delay_use = 1;
26 module_param(delay_use, uint, 0644);
27 MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device");
30 module_param(ss_en, int, 0644);
31 MODULE_PARM_DESC(ss_en, "enable selective suspend");
33 static int ss_interval = 50;
34 module_param(ss_interval, int, 0644);
35 MODULE_PARM_DESC(ss_interval, "Interval to enter ss state in seconds");
37 static int auto_delink_en;
38 module_param(auto_delink_en, int, 0644);
39 MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
41 static unsigned char aspm_l0s_l1_en;
42 module_param(aspm_l0s_l1_en, byte, 0644);
43 MODULE_PARM_DESC(aspm_l0s_l1_en, "enable device aspm");
46 module_param(msi_en, int, 0644);
47 MODULE_PARM_DESC(msi_en, "enable msi");
49 static irqreturn_t rtsx_interrupt(int irq, void *dev_id);
51 /***********************************************************************
53 ***********************************************************************/
55 static const char *host_info(struct Scsi_Host *host)
57 return "SCSI emulation for PCI-Express Mass Storage devices";
60 static int slave_alloc(struct scsi_device *sdev)
63 * Set the INQUIRY transfer length to 36. We don't use any of
64 * the extra data and many devices choke if asked for more or
67 sdev->inquiry_len = 36;
71 static int slave_configure(struct scsi_device *sdev)
74 * Scatter-gather buffers (all but the last) must have a length
75 * divisible by the bulk maxpacket size. Otherwise a data packet
76 * would end up being short, causing a premature end to the data
77 * transfer. Since high-speed bulk pipes have a maxpacket size
78 * of 512, we'll use that as the scsi device queue's DMA alignment
79 * mask. Guaranteeing proper alignment of the first buffer will
80 * have the desired effect because, except at the beginning and
81 * the end, scatter-gather buffers follow page boundaries.
83 blk_queue_dma_alignment(sdev->request_queue, (512 - 1));
85 /* Set the SCSI level to at least 2. We'll leave it at 3 if that's
86 * what is originally reported. We need this to avoid confusing
87 * the SCSI layer with devices that report 0 or 1, but need 10-byte
88 * commands (ala ATAPI devices behind certain bridges, or devices
89 * which simply have broken INQUIRY data).
91 * NOTE: This means /dev/sg programs (ala cdrecord) will get the
92 * actual information. This seems to be the preference for
95 * NOTE: This also means that /proc/scsi/scsi and sysfs may report
96 * the actual value or the modified one, depending on where the
99 if (sdev->scsi_level < SCSI_2) {
100 sdev->scsi_level = SCSI_2;
101 sdev->sdev_target->scsi_level = SCSI_2;
107 /***********************************************************************
108 * /proc/scsi/ functions
109 ***********************************************************************/
111 /* we use this macro to help us write into the buffer */
113 #define SPRINTF(args...) \
115 if (pos < buffer + length) \
116 pos += sprintf(pos, ## args); \
119 /* queue a command */
120 /* This is always called with scsi_lock(host) held */
121 static int queuecommand_lck(struct scsi_cmnd *srb,
122 void (*done)(struct scsi_cmnd *))
124 struct rtsx_dev *dev = host_to_rtsx(srb->device->host);
125 struct rtsx_chip *chip = dev->chip;
127 /* check for state-transition errors */
129 dev_err(&dev->pci->dev, "Error: chip->srb = %p\n",
131 return SCSI_MLQUEUE_HOST_BUSY;
134 /* fail the command if we are disconnecting */
135 if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
136 dev_info(&dev->pci->dev, "Fail command during disconnect\n");
137 srb->result = DID_NO_CONNECT << 16;
142 /* enqueue the command and wake up the control thread */
143 srb->scsi_done = done;
145 complete(&dev->cmnd_ready);
150 static DEF_SCSI_QCMD(queuecommand)
152 /***********************************************************************
153 * Error handling functions
154 ***********************************************************************/
156 /* Command timeout and abort */
157 static int command_abort(struct scsi_cmnd *srb)
159 struct Scsi_Host *host = srb->device->host;
160 struct rtsx_dev *dev = host_to_rtsx(host);
161 struct rtsx_chip *chip = dev->chip;
163 dev_info(&dev->pci->dev, "%s called\n", __func__);
167 /* Is this command still active? */
168 if (chip->srb != srb) {
170 dev_info(&dev->pci->dev, "-- nothing to abort\n");
174 rtsx_set_stat(chip, RTSX_STAT_ABORT);
178 /* Wait for the aborted command to finish */
179 wait_for_completion(&dev->notify);
185 * This invokes the transport reset mechanism to reset the state of the
188 static int device_reset(struct scsi_cmnd *srb)
190 struct rtsx_dev *dev = host_to_rtsx(srb->device->host);
192 dev_info(&dev->pci->dev, "%s called\n", __func__);
198 * this defines our host template, with which we'll allocate hosts
201 static struct scsi_host_template rtsx_host_template = {
202 /* basic userland interface stuff */
203 .name = CR_DRIVER_NAME,
204 .proc_name = CR_DRIVER_NAME,
207 /* command interface -- queued only */
208 .queuecommand = queuecommand,
210 /* error and abort handlers */
211 .eh_abort_handler = command_abort,
212 .eh_device_reset_handler = device_reset,
214 /* queue commands only, only one command per LUN */
217 /* unknown initiator id */
220 .slave_alloc = slave_alloc,
221 .slave_configure = slave_configure,
223 /* lots of sg segments can be handled */
224 .sg_tablesize = SG_ALL,
226 /* limit the total size of a transfer to 120 KB */
232 /* we do our own delay after a device or bus reset */
233 .skip_settle_delay = 1,
235 /* module management */
236 .module = THIS_MODULE
239 static int rtsx_acquire_irq(struct rtsx_dev *dev)
241 struct rtsx_chip *chip = dev->chip;
243 dev_info(&dev->pci->dev, "%s: chip->msi_en = %d, pci->irq = %d\n",
244 __func__, chip->msi_en, dev->pci->irq);
246 if (request_irq(dev->pci->irq, rtsx_interrupt,
247 chip->msi_en ? 0 : IRQF_SHARED,
248 CR_DRIVER_NAME, dev)) {
249 dev_err(&dev->pci->dev,
250 "rtsx: unable to grab IRQ %d, disabling device\n",
255 dev->irq = dev->pci->irq;
256 pci_intx(dev->pci, !chip->msi_en);
265 static int rtsx_suspend(struct pci_dev *pci, pm_message_t state)
267 struct rtsx_dev *dev = pci_get_drvdata(pci);
268 struct rtsx_chip *chip;
273 /* lock the device pointers */
274 mutex_lock(&dev->dev_mutex);
278 rtsx_do_before_power_down(chip, PM_S3);
281 free_irq(dev->irq, (void *)dev);
286 pci_disable_msi(pci);
289 pci_enable_wake(pci, pci_choose_state(pci, state), 1);
290 pci_disable_device(pci);
291 pci_set_power_state(pci, pci_choose_state(pci, state));
293 /* unlock the device pointers */
294 mutex_unlock(&dev->dev_mutex);
299 static int rtsx_resume(struct pci_dev *pci)
301 struct rtsx_dev *dev = pci_get_drvdata(pci);
302 struct rtsx_chip *chip;
309 /* lock the device pointers */
310 mutex_lock(&dev->dev_mutex);
312 pci_set_power_state(pci, PCI_D0);
313 pci_restore_state(pci);
314 if (pci_enable_device(pci) < 0) {
315 dev_err(&dev->pci->dev,
316 "%s: pci_enable_device failed, disabling device\n",
318 /* unlock the device pointers */
319 mutex_unlock(&dev->dev_mutex);
325 if (pci_enable_msi(pci) < 0)
329 if (rtsx_acquire_irq(dev) < 0) {
330 /* unlock the device pointers */
331 mutex_unlock(&dev->dev_mutex);
335 rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03, 0x00);
336 rtsx_init_chip(chip);
338 /* unlock the device pointers */
339 mutex_unlock(&dev->dev_mutex);
343 #endif /* CONFIG_PM */
345 static void rtsx_shutdown(struct pci_dev *pci)
347 struct rtsx_dev *dev = pci_get_drvdata(pci);
348 struct rtsx_chip *chip;
355 rtsx_do_before_power_down(chip, PM_S1);
358 free_irq(dev->irq, (void *)dev);
363 pci_disable_msi(pci);
365 pci_disable_device(pci);
368 static int rtsx_control_thread(void *__dev)
370 struct rtsx_dev *dev = __dev;
371 struct rtsx_chip *chip = dev->chip;
372 struct Scsi_Host *host = rtsx_to_host(dev);
375 if (wait_for_completion_interruptible(&dev->cmnd_ready))
378 /* lock the device pointers */
379 mutex_lock(&dev->dev_mutex);
381 /* if the device has disconnected, we are free to exit */
382 if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
383 dev_info(&dev->pci->dev, "-- rtsx-control exiting\n");
384 mutex_unlock(&dev->dev_mutex);
388 /* lock access to the state */
391 /* has the command aborted ? */
392 if (rtsx_chk_stat(chip, RTSX_STAT_ABORT)) {
393 chip->srb->result = DID_ABORT << 16;
399 /* reject the command if the direction indicator
402 if (chip->srb->sc_data_direction == DMA_BIDIRECTIONAL) {
403 dev_err(&dev->pci->dev, "UNKNOWN data direction\n");
404 chip->srb->result = DID_ERROR << 16;
407 /* reject if target != 0 or if LUN is higher than
408 * the maximum known LUN
410 else if (chip->srb->device->id) {
411 dev_err(&dev->pci->dev, "Bad target number (%d:%d)\n",
412 chip->srb->device->id,
413 (u8)chip->srb->device->lun);
414 chip->srb->result = DID_BAD_TARGET << 16;
417 else if (chip->srb->device->lun > chip->max_lun) {
418 dev_err(&dev->pci->dev, "Bad LUN (%d:%d)\n",
419 chip->srb->device->id,
420 (u8)chip->srb->device->lun);
421 chip->srb->result = DID_BAD_TARGET << 16;
424 /* we've got a command, let's do it! */
426 scsi_show_command(chip);
427 rtsx_invoke_transport(chip->srb, chip);
430 /* lock access to the state */
433 /* did the command already complete because of a disconnect? */
435 ; /* nothing to do */
437 /* indicate that the command is done */
438 else if (chip->srb->result != DID_ABORT << 16) {
439 chip->srb->scsi_done(chip->srb);
442 dev_err(&dev->pci->dev, "scsi command aborted\n");
445 if (rtsx_chk_stat(chip, RTSX_STAT_ABORT)) {
446 complete(&dev->notify);
448 rtsx_set_stat(chip, RTSX_STAT_IDLE);
451 /* finished working on this command */
455 /* unlock the device pointers */
456 mutex_unlock(&dev->dev_mutex);
459 /* notify the exit routine that we're actually exiting now
461 * complete()/wait_for_completion() is similar to up()/down(),
462 * except that complete() is safe in the case where the structure
463 * is getting deleted in a parallel mode of execution (i.e. just
464 * after the down() -- that's necessary for the thread-shutdown
467 * complete_and_exit() goes even further than this -- it is safe in
468 * the case that the thread of the caller is going away (not just
469 * the structure) -- this is necessary for the module-remove case.
470 * This is important in preemption kernels, which transfer the flow
471 * of execution immediately upon a complete().
473 complete_and_exit(&dev->control_exit, 0);
476 static int rtsx_polling_thread(void *__dev)
478 struct rtsx_dev *dev = __dev;
479 struct rtsx_chip *chip = dev->chip;
480 struct sd_info *sd_card = &chip->sd_card;
481 struct xd_info *xd_card = &chip->xd_card;
482 struct ms_info *ms_card = &chip->ms_card;
484 sd_card->cleanup_counter = 0;
485 xd_card->cleanup_counter = 0;
486 ms_card->cleanup_counter = 0;
488 /* Wait until SCSI scan finished */
489 wait_timeout((delay_use + 5) * 1000);
492 set_current_state(TASK_INTERRUPTIBLE);
493 schedule_timeout(msecs_to_jiffies(POLLING_INTERVAL));
495 /* lock the device pointers */
496 mutex_lock(&dev->dev_mutex);
498 /* if the device has disconnected, we are free to exit */
499 if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
500 dev_info(&dev->pci->dev, "-- rtsx-polling exiting\n");
501 mutex_unlock(&dev->dev_mutex);
505 mutex_unlock(&dev->dev_mutex);
507 mspro_polling_format_status(chip);
509 /* lock the device pointers */
510 mutex_lock(&dev->dev_mutex);
512 rtsx_polling_func(chip);
514 /* unlock the device pointers */
515 mutex_unlock(&dev->dev_mutex);
518 complete_and_exit(&dev->polling_exit, 0);
524 static irqreturn_t rtsx_interrupt(int irq, void *dev_id)
526 struct rtsx_dev *dev = dev_id;
527 struct rtsx_chip *chip;
539 spin_lock(&dev->reg_lock);
541 retval = rtsx_pre_handle_interrupt(chip);
542 if (retval == STATUS_FAIL) {
543 spin_unlock(&dev->reg_lock);
544 if (chip->int_reg == 0xFFFFFFFF)
549 status = chip->int_reg;
551 if (dev->check_card_cd) {
552 if (!(dev->check_card_cd & status)) {
553 /* card not exist, return TRANS_RESULT_FAIL */
554 dev->trans_result = TRANS_RESULT_FAIL;
561 if (status & (NEED_COMPLETE_INT | DELINK_INT)) {
562 if (status & (TRANS_FAIL_INT | DELINK_INT)) {
563 if (status & DELINK_INT)
564 RTSX_SET_DELINK(chip);
565 dev->trans_result = TRANS_RESULT_FAIL;
568 } else if (status & TRANS_OK_INT) {
569 dev->trans_result = TRANS_RESULT_OK;
572 } else if (status & DATA_DONE_INT) {
573 dev->trans_result = TRANS_NOT_READY;
574 if (dev->done && (dev->trans_state == STATE_TRANS_SG))
580 spin_unlock(&dev->reg_lock);
584 /* Release all our dynamic resources */
585 static void rtsx_release_resources(struct rtsx_dev *dev)
587 dev_info(&dev->pci->dev, "-- %s\n", __func__);
589 /* Tell the control thread to exit. The SCSI host must
590 * already have been removed so it won't try to queue
593 dev_info(&dev->pci->dev, "-- sending exit command to thread\n");
594 complete(&dev->cmnd_ready);
596 wait_for_completion(&dev->control_exit);
597 if (dev->polling_thread)
598 wait_for_completion(&dev->polling_exit);
602 if (dev->rtsx_resv_buf) {
603 dev->chip->host_cmds_ptr = NULL;
604 dev->chip->host_sg_tbl_ptr = NULL;
608 free_irq(dev->irq, (void *)dev);
609 if (dev->chip->msi_en)
610 pci_disable_msi(dev->pci);
612 iounmap(dev->remap_addr);
614 rtsx_release_chip(dev->chip);
619 * First stage of disconnect processing: stop all commands and remove
622 static void quiesce_and_remove_host(struct rtsx_dev *dev)
624 struct Scsi_Host *host = rtsx_to_host(dev);
625 struct rtsx_chip *chip = dev->chip;
628 * Prevent new transfers, stop the current command, and
629 * interrupt a SCSI-scan or device-reset delay
631 mutex_lock(&dev->dev_mutex);
633 rtsx_set_stat(chip, RTSX_STAT_DISCONNECT);
635 mutex_unlock(&dev->dev_mutex);
636 wake_up(&dev->delay_wait);
637 wait_for_completion(&dev->scanning_done);
639 /* Wait some time to let other threads exist */
643 * queuecommand won't accept any new commands and the control
644 * thread won't execute a previously-queued command. If there
645 * is such a command pending, complete it with an error.
647 mutex_lock(&dev->dev_mutex);
649 chip->srb->result = DID_NO_CONNECT << 16;
651 chip->srb->scsi_done(dev->chip->srb);
655 mutex_unlock(&dev->dev_mutex);
657 /* Now we own no commands so it's safe to remove the SCSI host */
658 scsi_remove_host(host);
661 /* Second stage of disconnect processing: deallocate all resources */
662 static void release_everything(struct rtsx_dev *dev)
664 rtsx_release_resources(dev);
667 * Drop our reference to the host; the SCSI core will free it
668 * when the refcount becomes 0.
670 scsi_host_put(rtsx_to_host(dev));
673 /* Thread to carry out delayed SCSI-device scanning */
674 static int rtsx_scan_thread(void *__dev)
676 struct rtsx_dev *dev = __dev;
677 struct rtsx_chip *chip = dev->chip;
679 /* Wait for the timeout to expire or for a disconnect */
681 dev_info(&dev->pci->dev,
682 "%s: waiting for device to settle before scanning\n",
684 wait_event_interruptible_timeout
686 rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT),
690 /* If the device is still connected, perform the scanning */
691 if (!rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) {
692 scsi_scan_host(rtsx_to_host(dev));
693 dev_info(&dev->pci->dev, "%s: device scan complete\n",
696 /* Should we unbind if no devices were detected? */
699 complete_and_exit(&dev->scanning_done, 0);
702 static void rtsx_init_options(struct rtsx_chip *chip)
704 chip->vendor_id = chip->rtsx->pci->vendor;
705 chip->product_id = chip->rtsx->pci->device;
708 chip->driver_first_load = 1;
709 #ifdef HW_AUTO_SWITCH_SD_BUS
710 chip->sdio_in_charge = 0;
713 chip->mspro_formatter_enable = 1;
715 chip->use_hw_setting = 0;
716 chip->lun_mode = DEFAULT_SINGLE;
717 chip->auto_delink_en = auto_delink_en;
719 chip->ss_idle_period = ss_interval * 1000;
720 chip->remote_wakeup_en = 0;
721 chip->aspm_l0s_l1_en = aspm_l0s_l1_en;
722 chip->dynamic_aspm = 1;
723 chip->fpga_sd_sdr104_clk = CLK_200;
724 chip->fpga_sd_ddr50_clk = CLK_100;
725 chip->fpga_sd_sdr50_clk = CLK_100;
726 chip->fpga_sd_hs_clk = CLK_100;
727 chip->fpga_mmc_52m_clk = CLK_80;
728 chip->fpga_ms_hg_clk = CLK_80;
729 chip->fpga_ms_4bit_clk = CLK_80;
730 chip->fpga_ms_1bit_clk = CLK_40;
731 chip->asic_sd_sdr104_clk = 203;
732 chip->asic_sd_sdr50_clk = 98;
733 chip->asic_sd_ddr50_clk = 98;
734 chip->asic_sd_hs_clk = 98;
735 chip->asic_mmc_52m_clk = 98;
736 chip->asic_ms_hg_clk = 117;
737 chip->asic_ms_4bit_clk = 78;
738 chip->asic_ms_1bit_clk = 39;
739 chip->ssc_depth_sd_sdr104 = SSC_DEPTH_2M;
740 chip->ssc_depth_sd_sdr50 = SSC_DEPTH_2M;
741 chip->ssc_depth_sd_ddr50 = SSC_DEPTH_1M;
742 chip->ssc_depth_sd_hs = SSC_DEPTH_1M;
743 chip->ssc_depth_mmc_52m = SSC_DEPTH_1M;
744 chip->ssc_depth_ms_hg = SSC_DEPTH_1M;
745 chip->ssc_depth_ms_4bit = SSC_DEPTH_512K;
746 chip->ssc_depth_low_speed = SSC_DEPTH_512K;
748 chip->sd_speed_prior = 0x01040203;
749 chip->sd_current_prior = 0x00010203;
750 chip->sd_ctl = SD_PUSH_POINT_AUTO |
751 SD_SAMPLE_POINT_AUTO |
752 SUPPORT_MMC_DDR_MODE;
753 chip->sd_ddr_tx_phase = 0;
754 chip->mmc_ddr_tx_phase = 1;
755 chip->sd_default_tx_phase = 15;
756 chip->sd_default_rx_phase = 15;
757 chip->pmos_pwr_on_interval = 200;
758 chip->sd_voltage_switch_delay = 1000;
759 chip->ms_power_class_en = 3;
761 chip->sd_400mA_ocp_thd = 1;
762 chip->sd_800mA_ocp_thd = 5;
763 chip->ms_ocp_thd = 2;
765 chip->card_drive_sel = 0x55;
766 chip->sd30_drive_sel_1v8 = 0x03;
767 chip->sd30_drive_sel_3v3 = 0x01;
769 chip->do_delink_before_power_down = 1;
770 chip->auto_power_down = 1;
771 chip->polling_config = 0;
773 chip->force_clkreq_0 = 1;
774 chip->ft2_fast_mode = 0;
776 chip->sdio_retry_cnt = 1;
778 chip->xd_timeout = 2000;
779 chip->sd_timeout = 10000;
780 chip->ms_timeout = 2000;
781 chip->mspro_timeout = 15000;
783 chip->power_down_in_ss = 1;
789 chip->delink_stage1_step = 100;
790 chip->delink_stage2_step = 40;
791 chip->delink_stage3_step = 20;
793 chip->auto_delink_in_L1 = 1;
795 chip->msi_en = msi_en;
796 chip->hp_watch_bios_hotplug = 0;
797 chip->max_payload = 0;
798 chip->phy_voltage = 0;
800 chip->support_ms_8bit = 1;
801 chip->s3_pwr_off_delay = 1000;
804 static int rtsx_probe(struct pci_dev *pci,
805 const struct pci_device_id *pci_id)
807 struct Scsi_Host *host;
808 struct rtsx_dev *dev;
810 struct task_struct *th;
812 dev_dbg(&pci->dev, "Realtek PCI-E card reader detected\n");
814 err = pcim_enable_device(pci);
816 dev_err(&pci->dev, "PCI enable device failed!\n");
820 err = pci_request_regions(pci, CR_DRIVER_NAME);
822 dev_err(&pci->dev, "PCI request regions for %s failed!\n",
828 * Ask the SCSI layer to allocate a host structure, with extra
829 * space at the end for our private rtsx_dev structure.
831 host = scsi_host_alloc(&rtsx_host_template, sizeof(*dev));
833 dev_err(&pci->dev, "Unable to allocate the scsi host\n");
837 dev = host_to_rtsx(host);
838 memset(dev, 0, sizeof(struct rtsx_dev));
840 dev->chip = kzalloc(sizeof(*dev->chip), GFP_KERNEL);
843 goto chip_alloc_fail;
846 spin_lock_init(&dev->reg_lock);
847 mutex_init(&dev->dev_mutex);
848 init_completion(&dev->cmnd_ready);
849 init_completion(&dev->control_exit);
850 init_completion(&dev->polling_exit);
851 init_completion(&dev->notify);
852 init_completion(&dev->scanning_done);
853 init_waitqueue_head(&dev->delay_wait);
858 dev_info(&pci->dev, "Resource length: 0x%x\n",
859 (unsigned int)pci_resource_len(pci, 0));
860 dev->addr = pci_resource_start(pci, 0);
861 dev->remap_addr = ioremap_nocache(dev->addr, pci_resource_len(pci, 0));
862 if (!dev->remap_addr) {
863 dev_err(&pci->dev, "ioremap error\n");
869 * Using "unsigned long" cast here to eliminate gcc warning in
872 dev_info(&pci->dev, "Original address: 0x%lx, remapped address: 0x%lx\n",
873 (unsigned long)(dev->addr), (unsigned long)(dev->remap_addr));
875 dev->rtsx_resv_buf = dmam_alloc_coherent(&pci->dev, RTSX_RESV_BUF_LEN,
876 &dev->rtsx_resv_buf_addr, GFP_KERNEL);
877 if (!dev->rtsx_resv_buf) {
878 dev_err(&pci->dev, "alloc dma buffer fail\n");
882 dev->chip->host_cmds_ptr = dev->rtsx_resv_buf;
883 dev->chip->host_cmds_addr = dev->rtsx_resv_buf_addr;
884 dev->chip->host_sg_tbl_ptr = dev->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
885 dev->chip->host_sg_tbl_addr = dev->rtsx_resv_buf_addr +
888 dev->chip->rtsx = dev;
890 rtsx_init_options(dev->chip);
892 dev_info(&pci->dev, "pci->irq = %d\n", pci->irq);
894 if (dev->chip->msi_en) {
895 if (pci_enable_msi(pci) < 0)
896 dev->chip->msi_en = 0;
899 if (rtsx_acquire_irq(dev) < 0) {
901 goto irq_acquire_fail;
905 synchronize_irq(dev->irq);
907 rtsx_init_chip(dev->chip);
910 * set the supported max_lun and max_id for the scsi host
911 * NOTE: the minimal value of max_id is 1
914 host->max_lun = dev->chip->max_lun;
916 /* Start up our control thread */
917 th = kthread_run(rtsx_control_thread, dev, CR_DRIVER_NAME);
919 dev_err(&pci->dev, "Unable to start control thread\n");
921 goto control_thread_fail;
923 dev->ctl_thread = th;
925 err = scsi_add_host(host, &pci->dev);
927 dev_err(&pci->dev, "Unable to add the scsi host\n");
928 goto scsi_add_host_fail;
931 /* Start up the thread for delayed SCSI-device scanning */
932 th = kthread_run(rtsx_scan_thread, dev, "rtsx-scan");
934 dev_err(&pci->dev, "Unable to start the device-scanning thread\n");
935 complete(&dev->scanning_done);
937 goto scan_thread_fail;
940 /* Start up the thread for polling thread */
941 th = kthread_run(rtsx_polling_thread, dev, "rtsx-polling");
943 dev_err(&pci->dev, "Unable to start the device-polling thread\n");
945 goto scan_thread_fail;
947 dev->polling_thread = th;
949 pci_set_drvdata(pci, dev);
953 /* We come here if there are any problems */
955 quiesce_and_remove_host(dev);
957 complete(&dev->cmnd_ready);
958 wait_for_completion(&dev->control_exit);
960 free_irq(dev->irq, (void *)dev);
961 rtsx_release_chip(dev->chip);
963 dev->chip->host_cmds_ptr = NULL;
964 dev->chip->host_sg_tbl_ptr = NULL;
965 if (dev->chip->msi_en)
966 pci_disable_msi(dev->pci);
968 iounmap(dev->remap_addr);
972 dev_err(&pci->dev, "%s failed\n", __func__);
977 static void rtsx_remove(struct pci_dev *pci)
979 struct rtsx_dev *dev = pci_get_drvdata(pci);
981 dev_info(&pci->dev, "%s called\n", __func__);
983 quiesce_and_remove_host(dev);
984 release_everything(dev);
988 static const struct pci_device_id rtsx_ids[] = {
989 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x5208),
990 PCI_CLASS_OTHERS << 16, 0xFF0000 },
991 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x5288),
992 PCI_CLASS_OTHERS << 16, 0xFF0000 },
996 MODULE_DEVICE_TABLE(pci, rtsx_ids);
998 /* pci_driver definition */
999 static struct pci_driver rtsx_driver = {
1000 .name = CR_DRIVER_NAME,
1001 .id_table = rtsx_ids,
1002 .probe = rtsx_probe,
1003 .remove = rtsx_remove,
1005 .suspend = rtsx_suspend,
1006 .resume = rtsx_resume,
1008 .shutdown = rtsx_shutdown,
1011 module_pci_driver(rtsx_driver);