-/* Driver for Realtek PCI-Express card reader
- *
- * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- * Author:
- * Wei WANG <wei_wang@realsil.com.cn>
- */
-
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-#include <linux/highmem.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/idr.h>
-#include <linux/platform_device.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/rtsx_pci.h>
-#include <linux/mmc/card.h>
-#include <asm/unaligned.h>
-
-#include "rtsx_pcr.h"
-
-static bool msi_en = true;
-module_param(msi_en, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(msi_en, "Enable MSI");
-
-static DEFINE_IDR(rtsx_pci_idr);
-static DEFINE_SPINLOCK(rtsx_pci_lock);
-
-static struct mfd_cell rtsx_pcr_cells[] = {
- [RTSX_SD_CARD] = {
- .name = DRV_NAME_RTSX_PCI_SDMMC,
- },
- [RTSX_MS_CARD] = {
- .name = DRV_NAME_RTSX_PCI_MS,
- },
-};
-
-static const struct pci_device_id rtsx_pci_ids[] = {
- { PCI_DEVICE(0x10EC, 0x5209), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x5229), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x5289), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x5227), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x522A), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x5249), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x5287), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x5286), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x524A), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { PCI_DEVICE(0x10EC, 0x525A), PCI_CLASS_OTHERS << 16, 0xFF0000 },
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, rtsx_pci_ids);
-
-static inline void rtsx_pci_enable_aspm(struct rtsx_pcr *pcr)
-{
- rtsx_pci_update_cfg_byte(pcr, pcr->pcie_cap + PCI_EXP_LNKCTL,
- 0xFC, pcr->aspm_en);
-}
-
-static inline void rtsx_pci_disable_aspm(struct rtsx_pcr *pcr)
-{
- rtsx_pci_update_cfg_byte(pcr, pcr->pcie_cap + PCI_EXP_LNKCTL,
- 0xFC, 0);
-}
-
-int rtsx_comm_set_ltr_latency(struct rtsx_pcr *pcr, u32 latency)
-{
- rtsx_pci_write_register(pcr, MSGTXDATA0,
- MASK_8_BIT_DEF, (u8) (latency & 0xFF));
- rtsx_pci_write_register(pcr, MSGTXDATA1,
- MASK_8_BIT_DEF, (u8)((latency >> 8) & 0xFF));
- rtsx_pci_write_register(pcr, MSGTXDATA2,
- MASK_8_BIT_DEF, (u8)((latency >> 16) & 0xFF));
- rtsx_pci_write_register(pcr, MSGTXDATA3,
- MASK_8_BIT_DEF, (u8)((latency >> 24) & 0xFF));
- rtsx_pci_write_register(pcr, LTR_CTL, LTR_TX_EN_MASK |
- LTR_LATENCY_MODE_MASK, LTR_TX_EN_1 | LTR_LATENCY_MODE_SW);
-
- return 0;
-}
-
-int rtsx_set_ltr_latency(struct rtsx_pcr *pcr, u32 latency)
-{
- if (pcr->ops->set_ltr_latency)
- return pcr->ops->set_ltr_latency(pcr, latency);
- else
- return rtsx_comm_set_ltr_latency(pcr, latency);
-}
-
-static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable)
-{
- struct rtsx_cr_option *option = &pcr->option;
-
- if (pcr->aspm_enabled == enable)
- return;
-
- if (option->dev_aspm_mode == DEV_ASPM_DYNAMIC) {
- if (enable)
- rtsx_pci_enable_aspm(pcr);
- else
- rtsx_pci_disable_aspm(pcr);
- } else if (option->dev_aspm_mode == DEV_ASPM_BACKDOOR) {
- u8 mask = FORCE_ASPM_VAL_MASK;
- u8 val = 0;
-
- if (enable)
- val = pcr->aspm_en;
- rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
- }
-
- pcr->aspm_enabled = enable;
-}
-
-static void rtsx_disable_aspm(struct rtsx_pcr *pcr)
-{
- if (pcr->ops->set_aspm)
- pcr->ops->set_aspm(pcr, false);
- else
- rtsx_comm_set_aspm(pcr, false);
-}
-
-int rtsx_set_l1off_sub(struct rtsx_pcr *pcr, u8 val)
-{
- rtsx_pci_write_register(pcr, L1SUB_CONFIG3, 0xFF, val);
-
- return 0;
-}
-
-void rtsx_set_l1off_sub_cfg_d0(struct rtsx_pcr *pcr, int active)
-{
- if (pcr->ops->set_l1off_cfg_sub_d0)
- pcr->ops->set_l1off_cfg_sub_d0(pcr, active);
-}
-
-static void rtsx_comm_pm_full_on(struct rtsx_pcr *pcr)
-{
- struct rtsx_cr_option *option = &pcr->option;
-
- rtsx_disable_aspm(pcr);
-
- if (option->ltr_enabled)
- rtsx_set_ltr_latency(pcr, option->ltr_active_latency);
-
- if (rtsx_check_dev_flag(pcr, LTR_L1SS_PWR_GATE_EN))
- rtsx_set_l1off_sub_cfg_d0(pcr, 1);
-}
-
-void rtsx_pm_full_on(struct rtsx_pcr *pcr)
-{
- if (pcr->ops->full_on)
- pcr->ops->full_on(pcr);
- else
- rtsx_comm_pm_full_on(pcr);
-}
-
-void rtsx_pci_start_run(struct rtsx_pcr *pcr)
-{
- /* If pci device removed, don't queue idle work any more */
- if (pcr->remove_pci)
- return;
-
- if (pcr->state != PDEV_STAT_RUN) {
- pcr->state = PDEV_STAT_RUN;
- if (pcr->ops->enable_auto_blink)
- pcr->ops->enable_auto_blink(pcr);
- rtsx_pm_full_on(pcr);
- }
-
- mod_delayed_work(system_wq, &pcr->idle_work, msecs_to_jiffies(200));
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_start_run);
-
-int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data)
-{
- int i;
- u32 val = HAIMR_WRITE_START;
-
- val |= (u32)(addr & 0x3FFF) << 16;
- val |= (u32)mask << 8;
- val |= (u32)data;
-
- rtsx_pci_writel(pcr, RTSX_HAIMR, val);
-
- for (i = 0; i < MAX_RW_REG_CNT; i++) {
- val = rtsx_pci_readl(pcr, RTSX_HAIMR);
- if ((val & HAIMR_TRANS_END) == 0) {
- if (data != (u8)val)
- return -EIO;
- return 0;
- }
- }
-
- return -ETIMEDOUT;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_write_register);
-
-int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data)
-{
- u32 val = HAIMR_READ_START;
- int i;
-
- val |= (u32)(addr & 0x3FFF) << 16;
- rtsx_pci_writel(pcr, RTSX_HAIMR, val);
-
- for (i = 0; i < MAX_RW_REG_CNT; i++) {
- val = rtsx_pci_readl(pcr, RTSX_HAIMR);
- if ((val & HAIMR_TRANS_END) == 0)
- break;
- }
-
- if (i >= MAX_RW_REG_CNT)
- return -ETIMEDOUT;
-
- if (data)
- *data = (u8)(val & 0xFF);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_read_register);
-
-int __rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val)
-{
- int err, i, finished = 0;
- u8 tmp;
-
- rtsx_pci_init_cmd(pcr);
-
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYDATA0, 0xFF, (u8)val);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYDATA1, 0xFF, (u8)(val >> 8));
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYADDR, 0xFF, addr);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYRWCTL, 0xFF, 0x81);
-
- err = rtsx_pci_send_cmd(pcr, 100);
- if (err < 0)
- return err;
-
- for (i = 0; i < 100000; i++) {
- err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp);
- if (err < 0)
- return err;
-
- if (!(tmp & 0x80)) {
- finished = 1;
- break;
- }
- }
-
- if (!finished)
- return -ETIMEDOUT;
-
- return 0;
-}
-
-int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val)
-{
- if (pcr->ops->write_phy)
- return pcr->ops->write_phy(pcr, addr, val);
-
- return __rtsx_pci_write_phy_register(pcr, addr, val);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_write_phy_register);
-
-int __rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val)
-{
- int err, i, finished = 0;
- u16 data;
- u8 *ptr, tmp;
-
- rtsx_pci_init_cmd(pcr);
-
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYADDR, 0xFF, addr);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYRWCTL, 0xFF, 0x80);
-
- err = rtsx_pci_send_cmd(pcr, 100);
- if (err < 0)
- return err;
-
- for (i = 0; i < 100000; i++) {
- err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp);
- if (err < 0)
- return err;
-
- if (!(tmp & 0x80)) {
- finished = 1;
- break;
- }
- }
-
- if (!finished)
- return -ETIMEDOUT;
-
- rtsx_pci_init_cmd(pcr);
-
- rtsx_pci_add_cmd(pcr, READ_REG_CMD, PHYDATA0, 0, 0);
- rtsx_pci_add_cmd(pcr, READ_REG_CMD, PHYDATA1, 0, 0);
-
- err = rtsx_pci_send_cmd(pcr, 100);
- if (err < 0)
- return err;
-
- ptr = rtsx_pci_get_cmd_data(pcr);
- data = ((u16)ptr[1] << 8) | ptr[0];
-
- if (val)
- *val = data;
-
- return 0;
-}
-
-int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val)
-{
- if (pcr->ops->read_phy)
- return pcr->ops->read_phy(pcr, addr, val);
-
- return __rtsx_pci_read_phy_register(pcr, addr, val);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_read_phy_register);
-
-void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr)
-{
- rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD);
- rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA);
-
- rtsx_pci_write_register(pcr, DMACTL, 0x80, 0x80);
- rtsx_pci_write_register(pcr, RBCTL, 0x80, 0x80);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_stop_cmd);
-
-void rtsx_pci_add_cmd(struct rtsx_pcr *pcr,
- u8 cmd_type, u16 reg_addr, u8 mask, u8 data)
-{
- unsigned long flags;
- u32 val = 0;
- u32 *ptr = (u32 *)(pcr->host_cmds_ptr);
-
- val |= (u32)(cmd_type & 0x03) << 30;
- val |= (u32)(reg_addr & 0x3FFF) << 16;
- val |= (u32)mask << 8;
- val |= (u32)data;
-
- spin_lock_irqsave(&pcr->lock, flags);
- ptr += pcr->ci;
- if (pcr->ci < (HOST_CMDS_BUF_LEN / 4)) {
- put_unaligned_le32(val, ptr);
- ptr++;
- pcr->ci++;
- }
- spin_unlock_irqrestore(&pcr->lock, flags);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_add_cmd);
-
-void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr)
-{
- u32 val = 1 << 31;
-
- rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
-
- val |= (u32)(pcr->ci * 4) & 0x00FFFFFF;
- /* Hardware Auto Response */
- val |= 0x40000000;
- rtsx_pci_writel(pcr, RTSX_HCBCTLR, val);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd_no_wait);
-
-int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout)
-{
- struct completion trans_done;
- u32 val = 1 << 31;
- long timeleft;
- unsigned long flags;
- int err = 0;
-
- spin_lock_irqsave(&pcr->lock, flags);
-
- /* set up data structures for the wakeup system */
- pcr->done = &trans_done;
- pcr->trans_result = TRANS_NOT_READY;
- init_completion(&trans_done);
-
- rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
-
- val |= (u32)(pcr->ci * 4) & 0x00FFFFFF;
- /* Hardware Auto Response */
- val |= 0x40000000;
- rtsx_pci_writel(pcr, RTSX_HCBCTLR, val);
-
- spin_unlock_irqrestore(&pcr->lock, flags);
-
- /* Wait for TRANS_OK_INT */
- timeleft = wait_for_completion_interruptible_timeout(
- &trans_done, msecs_to_jiffies(timeout));
- if (timeleft <= 0) {
- pcr_dbg(pcr, "Timeout (%s %d)\n", __func__, __LINE__);
- err = -ETIMEDOUT;
- goto finish_send_cmd;
- }
-
- spin_lock_irqsave(&pcr->lock, flags);
- if (pcr->trans_result == TRANS_RESULT_FAIL)
- err = -EINVAL;
- else if (pcr->trans_result == TRANS_RESULT_OK)
- err = 0;
- else if (pcr->trans_result == TRANS_NO_DEVICE)
- err = -ENODEV;
- spin_unlock_irqrestore(&pcr->lock, flags);
-
-finish_send_cmd:
- spin_lock_irqsave(&pcr->lock, flags);
- pcr->done = NULL;
- spin_unlock_irqrestore(&pcr->lock, flags);
-
- if ((err < 0) && (err != -ENODEV))
- rtsx_pci_stop_cmd(pcr);
-
- if (pcr->finish_me)
- complete(pcr->finish_me);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd);
-
-static void rtsx_pci_add_sg_tbl(struct rtsx_pcr *pcr,
- dma_addr_t addr, unsigned int len, int end)
-{
- u64 *ptr = (u64 *)(pcr->host_sg_tbl_ptr) + pcr->sgi;
- u64 val;
- u8 option = SG_VALID | SG_TRANS_DATA;
-
- pcr_dbg(pcr, "DMA addr: 0x%x, Len: 0x%x\n", (unsigned int)addr, len);
-
- if (end)
- option |= SG_END;
- val = ((u64)addr << 32) | ((u64)len << 12) | option;
-
- put_unaligned_le64(val, ptr);
- pcr->sgi++;
-}
-
-int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
- int num_sg, bool read, int timeout)
-{
- int err = 0, count;
-
- pcr_dbg(pcr, "--> %s: num_sg = %d\n", __func__, num_sg);
- count = rtsx_pci_dma_map_sg(pcr, sglist, num_sg, read);
- if (count < 1)
- return -EINVAL;
- pcr_dbg(pcr, "DMA mapping count: %d\n", count);
-
- err = rtsx_pci_dma_transfer(pcr, sglist, count, read, timeout);
-
- rtsx_pci_dma_unmap_sg(pcr, sglist, num_sg, read);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data);
-
-int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
- int num_sg, bool read)
-{
- enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
-
- if (pcr->remove_pci)
- return -EINVAL;
-
- if ((sglist == NULL) || (num_sg <= 0))
- return -EINVAL;
-
- return dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dir);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_dma_map_sg);
-
-void rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
- int num_sg, bool read)
-{
- enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
-
- dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dir);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_dma_unmap_sg);
-
-int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist,
- int count, bool read, int timeout)
-{
- struct completion trans_done;
- struct scatterlist *sg;
- dma_addr_t addr;
- long timeleft;
- unsigned long flags;
- unsigned int len;
- int i, err = 0;
- u32 val;
- u8 dir = read ? DEVICE_TO_HOST : HOST_TO_DEVICE;
-
- if (pcr->remove_pci)
- return -ENODEV;
-
- if ((sglist == NULL) || (count < 1))
- return -EINVAL;
-
- val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE;
- pcr->sgi = 0;
- for_each_sg(sglist, sg, count, i) {
- addr = sg_dma_address(sg);
- len = sg_dma_len(sg);
- rtsx_pci_add_sg_tbl(pcr, addr, len, i == count - 1);
- }
-
- spin_lock_irqsave(&pcr->lock, flags);
-
- pcr->done = &trans_done;
- pcr->trans_result = TRANS_NOT_READY;
- init_completion(&trans_done);
- rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
- rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
-
- spin_unlock_irqrestore(&pcr->lock, flags);
-
- timeleft = wait_for_completion_interruptible_timeout(
- &trans_done, msecs_to_jiffies(timeout));
- if (timeleft <= 0) {
- pcr_dbg(pcr, "Timeout (%s %d)\n", __func__, __LINE__);
- err = -ETIMEDOUT;
- goto out;
- }
-
- spin_lock_irqsave(&pcr->lock, flags);
- if (pcr->trans_result == TRANS_RESULT_FAIL) {
- err = -EILSEQ;
- if (pcr->dma_error_count < RTS_MAX_TIMES_FREQ_REDUCTION)
- pcr->dma_error_count++;
- }
-
- else if (pcr->trans_result == TRANS_NO_DEVICE)
- err = -ENODEV;
- spin_unlock_irqrestore(&pcr->lock, flags);
-
-out:
- spin_lock_irqsave(&pcr->lock, flags);
- pcr->done = NULL;
- spin_unlock_irqrestore(&pcr->lock, flags);
-
- if ((err < 0) && (err != -ENODEV))
- rtsx_pci_stop_cmd(pcr);
-
- if (pcr->finish_me)
- complete(pcr->finish_me);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_dma_transfer);
-
-int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
-{
- int err;
- int i, j;
- u16 reg;
- u8 *ptr;
-
- if (buf_len > 512)
- buf_len = 512;
-
- ptr = buf;
- reg = PPBUF_BASE2;
- for (i = 0; i < buf_len / 256; i++) {
- rtsx_pci_init_cmd(pcr);
-
- for (j = 0; j < 256; j++)
- rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0);
-
- err = rtsx_pci_send_cmd(pcr, 250);
- if (err < 0)
- return err;
-
- memcpy(ptr, rtsx_pci_get_cmd_data(pcr), 256);
- ptr += 256;
- }
-
- if (buf_len % 256) {
- rtsx_pci_init_cmd(pcr);
-
- for (j = 0; j < buf_len % 256; j++)
- rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0);
-
- err = rtsx_pci_send_cmd(pcr, 250);
- if (err < 0)
- return err;
- }
-
- memcpy(ptr, rtsx_pci_get_cmd_data(pcr), buf_len % 256);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_read_ppbuf);
-
-int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
-{
- int err;
- int i, j;
- u16 reg;
- u8 *ptr;
-
- if (buf_len > 512)
- buf_len = 512;
-
- ptr = buf;
- reg = PPBUF_BASE2;
- for (i = 0; i < buf_len / 256; i++) {
- rtsx_pci_init_cmd(pcr);
-
- for (j = 0; j < 256; j++) {
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
- reg++, 0xFF, *ptr);
- ptr++;
- }
-
- err = rtsx_pci_send_cmd(pcr, 250);
- if (err < 0)
- return err;
- }
-
- if (buf_len % 256) {
- rtsx_pci_init_cmd(pcr);
-
- for (j = 0; j < buf_len % 256; j++) {
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
- reg++, 0xFF, *ptr);
- ptr++;
- }
-
- err = rtsx_pci_send_cmd(pcr, 250);
- if (err < 0)
- return err;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_write_ppbuf);
-
-static int rtsx_pci_set_pull_ctl(struct rtsx_pcr *pcr, const u32 *tbl)
-{
- rtsx_pci_init_cmd(pcr);
-
- while (*tbl & 0xFFFF0000) {
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
- (u16)(*tbl >> 16), 0xFF, (u8)(*tbl));
- tbl++;
- }
-
- return rtsx_pci_send_cmd(pcr, 100);
-}
-
-int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card)
-{
- const u32 *tbl;
-
- if (card == RTSX_SD_CARD)
- tbl = pcr->sd_pull_ctl_enable_tbl;
- else if (card == RTSX_MS_CARD)
- tbl = pcr->ms_pull_ctl_enable_tbl;
- else
- return -EINVAL;
-
- return rtsx_pci_set_pull_ctl(pcr, tbl);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_card_pull_ctl_enable);
-
-int rtsx_pci_card_pull_ctl_disable(struct rtsx_pcr *pcr, int card)
-{
- const u32 *tbl;
-
- if (card == RTSX_SD_CARD)
- tbl = pcr->sd_pull_ctl_disable_tbl;
- else if (card == RTSX_MS_CARD)
- tbl = pcr->ms_pull_ctl_disable_tbl;
- else
- return -EINVAL;
-
-
- return rtsx_pci_set_pull_ctl(pcr, tbl);
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_card_pull_ctl_disable);
-
-static void rtsx_pci_enable_bus_int(struct rtsx_pcr *pcr)
-{
- pcr->bier = TRANS_OK_INT_EN | TRANS_FAIL_INT_EN | SD_INT_EN;
-
- if (pcr->num_slots > 1)
- pcr->bier |= MS_INT_EN;
-
- /* Enable Bus Interrupt */
- rtsx_pci_writel(pcr, RTSX_BIER, pcr->bier);
-
- pcr_dbg(pcr, "RTSX_BIER: 0x%08x\n", pcr->bier);
-}
-
-static inline u8 double_ssc_depth(u8 depth)
-{
- return ((depth > 1) ? (depth - 1) : depth);
-}
-
-static u8 revise_ssc_depth(u8 ssc_depth, u8 div)
-{
- if (div > CLK_DIV_1) {
- if (ssc_depth > (div - 1))
- ssc_depth -= (div - 1);
- else
- ssc_depth = SSC_DEPTH_4M;
- }
-
- return ssc_depth;
-}
-
-int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
- u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk)
-{
- int err, clk;
- u8 n, clk_divider, mcu_cnt, div;
- static const u8 depth[] = {
- [RTSX_SSC_DEPTH_4M] = SSC_DEPTH_4M,
- [RTSX_SSC_DEPTH_2M] = SSC_DEPTH_2M,
- [RTSX_SSC_DEPTH_1M] = SSC_DEPTH_1M,
- [RTSX_SSC_DEPTH_500K] = SSC_DEPTH_500K,
- [RTSX_SSC_DEPTH_250K] = SSC_DEPTH_250K,
- };
-
- if (initial_mode) {
- /* We use 250k(around) here, in initial stage */
- clk_divider = SD_CLK_DIVIDE_128;
- card_clock = 30000000;
- } else {
- clk_divider = SD_CLK_DIVIDE_0;
- }
- err = rtsx_pci_write_register(pcr, SD_CFG1,
- SD_CLK_DIVIDE_MASK, clk_divider);
- if (err < 0)
- return err;
-
- /* Reduce card clock by 20MHz each time a DMA transfer error occurs */
- if (card_clock == UHS_SDR104_MAX_DTR &&
- pcr->dma_error_count &&
- PCI_PID(pcr) == RTS5227_DEVICE_ID)
- card_clock = UHS_SDR104_MAX_DTR -
- (pcr->dma_error_count * 20000000);
-
- card_clock /= 1000000;
- pcr_dbg(pcr, "Switch card clock to %dMHz\n", card_clock);
-
- clk = card_clock;
- if (!initial_mode && double_clk)
- clk = card_clock * 2;
- pcr_dbg(pcr, "Internal SSC clock: %dMHz (cur_clock = %d)\n",
- clk, pcr->cur_clock);
-
- if (clk == pcr->cur_clock)
- return 0;
-
- if (pcr->ops->conv_clk_and_div_n)
- n = (u8)pcr->ops->conv_clk_and_div_n(clk, CLK_TO_DIV_N);
- else
- n = (u8)(clk - 2);
- if ((clk <= 2) || (n > MAX_DIV_N_PCR))
- return -EINVAL;
-
- mcu_cnt = (u8)(125/clk + 3);
- if (mcu_cnt > 15)
- mcu_cnt = 15;
-
- /* Make sure that the SSC clock div_n is not less than MIN_DIV_N_PCR */
- div = CLK_DIV_1;
- while ((n < MIN_DIV_N_PCR) && (div < CLK_DIV_8)) {
- if (pcr->ops->conv_clk_and_div_n) {
- int dbl_clk = pcr->ops->conv_clk_and_div_n(n,
- DIV_N_TO_CLK) * 2;
- n = (u8)pcr->ops->conv_clk_and_div_n(dbl_clk,
- CLK_TO_DIV_N);
- } else {
- n = (n + 2) * 2 - 2;
- }
- div++;
- }
- pcr_dbg(pcr, "n = %d, div = %d\n", n, div);
-
- ssc_depth = depth[ssc_depth];
- if (double_clk)
- ssc_depth = double_ssc_depth(ssc_depth);
-
- ssc_depth = revise_ssc_depth(ssc_depth, div);
- pcr_dbg(pcr, "ssc_depth = %d\n", ssc_depth);
-
- rtsx_pci_init_cmd(pcr);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
- CLK_LOW_FREQ, CLK_LOW_FREQ);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV,
- 0xFF, (div << 4) | mcu_cnt);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2,
- SSC_DEPTH_MASK, ssc_depth);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
- if (vpclk) {
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
- PHASE_NOT_RESET, 0);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
- PHASE_NOT_RESET, PHASE_NOT_RESET);
- }
-
- err = rtsx_pci_send_cmd(pcr, 2000);
- if (err < 0)
- return err;
-
- /* Wait SSC clock stable */
- udelay(10);
- err = rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0);
- if (err < 0)
- return err;
-
- pcr->cur_clock = clk;
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_switch_clock);
-
-int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card)
-{
- if (pcr->ops->card_power_on)
- return pcr->ops->card_power_on(pcr, card);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_card_power_on);
-
-int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card)
-{
- if (pcr->ops->card_power_off)
- return pcr->ops->card_power_off(pcr, card);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_card_power_off);
-
-int rtsx_pci_card_exclusive_check(struct rtsx_pcr *pcr, int card)
-{
- static const unsigned int cd_mask[] = {
- [RTSX_SD_CARD] = SD_EXIST,
- [RTSX_MS_CARD] = MS_EXIST
- };
-
- if (!(pcr->flags & PCR_MS_PMOS)) {
- /* When using single PMOS, accessing card is not permitted
- * if the existing card is not the designated one.
- */
- if (pcr->card_exist & (~cd_mask[card]))
- return -EIO;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_card_exclusive_check);
-
-int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
-{
- if (pcr->ops->switch_output_voltage)
- return pcr->ops->switch_output_voltage(pcr, voltage);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_switch_output_voltage);
-
-unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr)
-{
- unsigned int val;
-
- val = rtsx_pci_readl(pcr, RTSX_BIPR);
- if (pcr->ops->cd_deglitch)
- val = pcr->ops->cd_deglitch(pcr);
-
- return val;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_card_exist);
-
-void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr)
-{
- struct completion finish;
-
- pcr->finish_me = &finish;
- init_completion(&finish);
-
- if (pcr->done)
- complete(pcr->done);
-
- if (!pcr->remove_pci)
- rtsx_pci_stop_cmd(pcr);
-
- wait_for_completion_interruptible_timeout(&finish,
- msecs_to_jiffies(2));
- pcr->finish_me = NULL;
-}
-EXPORT_SYMBOL_GPL(rtsx_pci_complete_unfinished_transfer);
-
-static void rtsx_pci_card_detect(struct work_struct *work)
-{
- struct delayed_work *dwork;
- struct rtsx_pcr *pcr;
- unsigned long flags;
- unsigned int card_detect = 0, card_inserted, card_removed;
- u32 irq_status;
-
- dwork = to_delayed_work(work);
- pcr = container_of(dwork, struct rtsx_pcr, carddet_work);
-
- pcr_dbg(pcr, "--> %s\n", __func__);
-
- mutex_lock(&pcr->pcr_mutex);
- spin_lock_irqsave(&pcr->lock, flags);
-
- irq_status = rtsx_pci_readl(pcr, RTSX_BIPR);
- pcr_dbg(pcr, "irq_status: 0x%08x\n", irq_status);
-
- irq_status &= CARD_EXIST;
- card_inserted = pcr->card_inserted & irq_status;
- card_removed = pcr->card_removed;
- pcr->card_inserted = 0;
- pcr->card_removed = 0;
-
- spin_unlock_irqrestore(&pcr->lock, flags);
-
- if (card_inserted || card_removed) {
- pcr_dbg(pcr, "card_inserted: 0x%x, card_removed: 0x%x\n",
- card_inserted, card_removed);
-
- if (pcr->ops->cd_deglitch)
- card_inserted = pcr->ops->cd_deglitch(pcr);
-
- card_detect = card_inserted | card_removed;
-
- pcr->card_exist |= card_inserted;
- pcr->card_exist &= ~card_removed;
- }
-
- mutex_unlock(&pcr->pcr_mutex);
-
- if ((card_detect & SD_EXIST) && pcr->slots[RTSX_SD_CARD].card_event)
- pcr->slots[RTSX_SD_CARD].card_event(
- pcr->slots[RTSX_SD_CARD].p_dev);
- if ((card_detect & MS_EXIST) && pcr->slots[RTSX_MS_CARD].card_event)
- pcr->slots[RTSX_MS_CARD].card_event(
- pcr->slots[RTSX_MS_CARD].p_dev);
-}
-
-static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
-{
- struct rtsx_pcr *pcr = dev_id;
- u32 int_reg;
-
- if (!pcr)
- return IRQ_NONE;
-
- spin_lock(&pcr->lock);
-
- int_reg = rtsx_pci_readl(pcr, RTSX_BIPR);
- /* Clear interrupt flag */
- rtsx_pci_writel(pcr, RTSX_BIPR, int_reg);
- if ((int_reg & pcr->bier) == 0) {
- spin_unlock(&pcr->lock);
- return IRQ_NONE;
- }
- if (int_reg == 0xFFFFFFFF) {
- spin_unlock(&pcr->lock);
- return IRQ_HANDLED;
- }
-
- int_reg &= (pcr->bier | 0x7FFFFF);
-
- if (int_reg & SD_INT) {
- if (int_reg & SD_EXIST) {
- pcr->card_inserted |= SD_EXIST;
- } else {
- pcr->card_removed |= SD_EXIST;
- pcr->card_inserted &= ~SD_EXIST;
- }
- pcr->dma_error_count = 0;
- }
-
- if (int_reg & MS_INT) {
- if (int_reg & MS_EXIST) {
- pcr->card_inserted |= MS_EXIST;
- } else {
- pcr->card_removed |= MS_EXIST;
- pcr->card_inserted &= ~MS_EXIST;
- }
- }
-
- if (int_reg & (NEED_COMPLETE_INT | DELINK_INT)) {
- if (int_reg & (TRANS_FAIL_INT | DELINK_INT)) {
- pcr->trans_result = TRANS_RESULT_FAIL;
- if (pcr->done)
- complete(pcr->done);
- } else if (int_reg & TRANS_OK_INT) {
- pcr->trans_result = TRANS_RESULT_OK;
- if (pcr->done)
- complete(pcr->done);
- }
- }
-
- if (pcr->card_inserted || pcr->card_removed)
- schedule_delayed_work(&pcr->carddet_work,
- msecs_to_jiffies(200));
-
- spin_unlock(&pcr->lock);
- return IRQ_HANDLED;
-}
-
-static int rtsx_pci_acquire_irq(struct rtsx_pcr *pcr)
-{
- pcr_dbg(pcr, "%s: pcr->msi_en = %d, pci->irq = %d\n",
- __func__, pcr->msi_en, pcr->pci->irq);
-
- if (request_irq(pcr->pci->irq, rtsx_pci_isr,
- pcr->msi_en ? 0 : IRQF_SHARED,
- DRV_NAME_RTSX_PCI, pcr)) {
- dev_err(&(pcr->pci->dev),
- "rtsx_sdmmc: unable to grab IRQ %d, disabling device\n",
- pcr->pci->irq);
- return -1;
- }
-
- pcr->irq = pcr->pci->irq;
- pci_intx(pcr->pci, !pcr->msi_en);
-
- return 0;
-}
-
-static void rtsx_enable_aspm(struct rtsx_pcr *pcr)
-{
- if (pcr->ops->set_aspm)
- pcr->ops->set_aspm(pcr, true);
- else
- rtsx_comm_set_aspm(pcr, true);
-}
-
-static void rtsx_comm_pm_power_saving(struct rtsx_pcr *pcr)
-{
- struct rtsx_cr_option *option = &pcr->option;
-
- if (option->ltr_enabled) {
- u32 latency = option->ltr_l1off_latency;
-
- if (rtsx_check_dev_flag(pcr, L1_SNOOZE_TEST_EN))
- mdelay(option->l1_snooze_delay);
-
- rtsx_set_ltr_latency(pcr, latency);
- }
-
- if (rtsx_check_dev_flag(pcr, LTR_L1SS_PWR_GATE_EN))
- rtsx_set_l1off_sub_cfg_d0(pcr, 0);
-
- rtsx_enable_aspm(pcr);
-}
-
-void rtsx_pm_power_saving(struct rtsx_pcr *pcr)
-{
- if (pcr->ops->power_saving)
- pcr->ops->power_saving(pcr);
- else
- rtsx_comm_pm_power_saving(pcr);
-}
-
-static void rtsx_pci_idle_work(struct work_struct *work)
-{
- struct delayed_work *dwork = to_delayed_work(work);
- struct rtsx_pcr *pcr = container_of(dwork, struct rtsx_pcr, idle_work);
-
- pcr_dbg(pcr, "--> %s\n", __func__);
-
- mutex_lock(&pcr->pcr_mutex);
-
- pcr->state = PDEV_STAT_IDLE;
-
- if (pcr->ops->disable_auto_blink)
- pcr->ops->disable_auto_blink(pcr);
- if (pcr->ops->turn_off_led)
- pcr->ops->turn_off_led(pcr);
-
- rtsx_pm_power_saving(pcr);
-
- mutex_unlock(&pcr->pcr_mutex);
-}
-
-#ifdef CONFIG_PM
-static void rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state)
-{
- if (pcr->ops->turn_off_led)
- pcr->ops->turn_off_led(pcr);
-
- rtsx_pci_writel(pcr, RTSX_BIER, 0);
- pcr->bier = 0;
-
- rtsx_pci_write_register(pcr, PETXCFG, 0x08, 0x08);
- rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, pm_state);
-
- if (pcr->ops->force_power_down)
- pcr->ops->force_power_down(pcr, pm_state);
-}
-#endif
-
-static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
-{
- int err;
-
- pcr->pcie_cap = pci_find_capability(pcr->pci, PCI_CAP_ID_EXP);
- rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
-
- rtsx_pci_enable_bus_int(pcr);
-
- /* Power on SSC */
- err = rtsx_pci_write_register(pcr, FPDCTL, SSC_POWER_DOWN, 0);
- if (err < 0)
- return err;
-
- /* Wait SSC power stable */
- udelay(200);
-
- rtsx_pci_disable_aspm(pcr);
- if (pcr->ops->optimize_phy) {
- err = pcr->ops->optimize_phy(pcr);
- if (err < 0)
- return err;
- }
-
- rtsx_pci_init_cmd(pcr);
-
- /* Set mcu_cnt to 7 to ensure data can be sampled properly */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV, 0x07, 0x07);
-
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, HOST_SLEEP_STATE, 0x03, 0x00);
- /* Disable card clock */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, 0x1E, 0);
- /* Reset delink mode */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CHANGE_LINK_STATE, 0x0A, 0);
- /* Card driving select */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DRIVE_SEL,
- 0xFF, pcr->card_drive_sel);
- /* Enable SSC Clock */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1,
- 0xFF, SSC_8X_EN | SSC_SEL_4M);
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2, 0xFF, 0x12);
- /* Disable cd_pwr_save */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CHANGE_LINK_STATE, 0x16, 0x10);
- /* Clear Link Ready Interrupt */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
- LINK_RDY_INT, LINK_RDY_INT);
- /* Enlarge the estimation window of PERST# glitch
- * to reduce the chance of invalid card interrupt
- */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PERST_GLITCH_WIDTH, 0xFF, 0x80);
- /* Update RC oscillator to 400k
- * bit[0] F_HIGH: for RC oscillator, Rst_value is 1'b1
- * 1: 2M 0: 400k
- */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RCCTL, 0x01, 0x00);
- /* Set interrupt write clear
- * bit 1: U_elbi_if_rd_clr_en
- * 1: Enable ELBI interrupt[31:22] & [7:0] flag read clear
- * 0: ELBI interrupt flag[31:22] & [7:0] only can be write clear
- */
- rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, NFTS_TX_CTRL, 0x02, 0);
-
- err = rtsx_pci_send_cmd(pcr, 100);
- if (err < 0)
- return err;
-
- switch (PCI_PID(pcr)) {
- case PID_5250:
- case PID_524A:
- case PID_525A:
- rtsx_pci_write_register(pcr, PM_CLK_FORCE_CTL, 1, 1);
- break;
- default:
- break;
- }
-
- /* Enable clk_request_n to enable clock power management */
- rtsx_pci_write_config_byte(pcr, pcr->pcie_cap + PCI_EXP_LNKCTL + 1, 1);
- /* Enter L1 when host tx idle */
- rtsx_pci_write_config_byte(pcr, 0x70F, 0x5B);
-
- if (pcr->ops->extra_init_hw) {
- err = pcr->ops->extra_init_hw(pcr);
- if (err < 0)
- return err;
- }
-
- /* No CD interrupt if probing driver with card inserted.
- * So we need to initialize pcr->card_exist here.
- */
- if (pcr->ops->cd_deglitch)
- pcr->card_exist = pcr->ops->cd_deglitch(pcr);
- else
- pcr->card_exist = rtsx_pci_readl(pcr, RTSX_BIPR) & CARD_EXIST;
-
- return 0;
-}
-
-static int rtsx_pci_init_chip(struct rtsx_pcr *pcr)
-{
- int err;
-
- spin_lock_init(&pcr->lock);
- mutex_init(&pcr->pcr_mutex);
-
- switch (PCI_PID(pcr)) {
- default:
- case 0x5209:
- rts5209_init_params(pcr);
- break;
-
- case 0x5229:
- rts5229_init_params(pcr);
- break;
-
- case 0x5289:
- rtl8411_init_params(pcr);
- break;
-
- case 0x5227:
- rts5227_init_params(pcr);
- break;
-
- case 0x522A:
- rts522a_init_params(pcr);
- break;
-
- case 0x5249:
- rts5249_init_params(pcr);
- break;
-
- case 0x524A:
- rts524a_init_params(pcr);
- break;
-
- case 0x525A:
- rts525a_init_params(pcr);
- break;
-
- case 0x5287:
- rtl8411b_init_params(pcr);
- break;
-
- case 0x5286:
- rtl8402_init_params(pcr);
- break;
- }
-
- pcr_dbg(pcr, "PID: 0x%04x, IC version: 0x%02x\n",
- PCI_PID(pcr), pcr->ic_version);
-
- pcr->slots = kcalloc(pcr->num_slots, sizeof(struct rtsx_slot),
- GFP_KERNEL);
- if (!pcr->slots)
- return -ENOMEM;
-
- if (pcr->ops->fetch_vendor_settings)
- pcr->ops->fetch_vendor_settings(pcr);
-
- pcr_dbg(pcr, "pcr->aspm_en = 0x%x\n", pcr->aspm_en);
- pcr_dbg(pcr, "pcr->sd30_drive_sel_1v8 = 0x%x\n",
- pcr->sd30_drive_sel_1v8);
- pcr_dbg(pcr, "pcr->sd30_drive_sel_3v3 = 0x%x\n",
- pcr->sd30_drive_sel_3v3);
- pcr_dbg(pcr, "pcr->card_drive_sel = 0x%x\n",
- pcr->card_drive_sel);
- pcr_dbg(pcr, "pcr->flags = 0x%x\n", pcr->flags);
-
- pcr->state = PDEV_STAT_IDLE;
- err = rtsx_pci_init_hw(pcr);
- if (err < 0) {
- kfree(pcr->slots);
- return err;
- }
-
- return 0;
-}
-
-static int rtsx_pci_probe(struct pci_dev *pcidev,
- const struct pci_device_id *id)
-{
- struct rtsx_pcr *pcr;
- struct pcr_handle *handle;
- u32 base, len;
- int ret, i, bar = 0;
-
- dev_dbg(&(pcidev->dev),
- ": Realtek PCI-E Card Reader found at %s [%04x:%04x] (rev %x)\n",
- pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
- (int)pcidev->revision);
-
- ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
- if (ret < 0)
- return ret;
-
- ret = pci_enable_device(pcidev);
- if (ret)
- return ret;
-
- ret = pci_request_regions(pcidev, DRV_NAME_RTSX_PCI);
- if (ret)
- goto disable;
-
- pcr = kzalloc(sizeof(*pcr), GFP_KERNEL);
- if (!pcr) {
- ret = -ENOMEM;
- goto release_pci;
- }
-
- handle = kzalloc(sizeof(*handle), GFP_KERNEL);
- if (!handle) {
- ret = -ENOMEM;
- goto free_pcr;
- }
- handle->pcr = pcr;
-
- idr_preload(GFP_KERNEL);
- spin_lock(&rtsx_pci_lock);
- ret = idr_alloc(&rtsx_pci_idr, pcr, 0, 0, GFP_NOWAIT);
- if (ret >= 0)
- pcr->id = ret;
- spin_unlock(&rtsx_pci_lock);
- idr_preload_end();
- if (ret < 0)
- goto free_handle;
-
- pcr->pci = pcidev;
- dev_set_drvdata(&pcidev->dev, handle);
-
- if (CHK_PCI_PID(pcr, 0x525A))
- bar = 1;
- len = pci_resource_len(pcidev, bar);
- base = pci_resource_start(pcidev, bar);
- pcr->remap_addr = ioremap_nocache(base, len);
- if (!pcr->remap_addr) {
- ret = -ENOMEM;
- goto free_handle;
- }
-
- pcr->rtsx_resv_buf = dma_alloc_coherent(&(pcidev->dev),
- RTSX_RESV_BUF_LEN, &(pcr->rtsx_resv_buf_addr),
- GFP_KERNEL);
- if (pcr->rtsx_resv_buf == NULL) {
- ret = -ENXIO;
- goto unmap;
- }
- pcr->host_cmds_ptr = pcr->rtsx_resv_buf;
- pcr->host_cmds_addr = pcr->rtsx_resv_buf_addr;
- pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
- pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN;
-
- pcr->card_inserted = 0;
- pcr->card_removed = 0;
- INIT_DELAYED_WORK(&pcr->carddet_work, rtsx_pci_card_detect);
- INIT_DELAYED_WORK(&pcr->idle_work, rtsx_pci_idle_work);
-
- pcr->msi_en = msi_en;
- if (pcr->msi_en) {
- ret = pci_enable_msi(pcidev);
- if (ret)
- pcr->msi_en = false;
- }
-
- ret = rtsx_pci_acquire_irq(pcr);
- if (ret < 0)
- goto disable_msi;
-
- pci_set_master(pcidev);
- synchronize_irq(pcr->irq);
-
- ret = rtsx_pci_init_chip(pcr);
- if (ret < 0)
- goto disable_irq;
-
- for (i = 0; i < ARRAY_SIZE(rtsx_pcr_cells); i++) {
- rtsx_pcr_cells[i].platform_data = handle;
- rtsx_pcr_cells[i].pdata_size = sizeof(*handle);
- }
- ret = mfd_add_devices(&pcidev->dev, pcr->id, rtsx_pcr_cells,
- ARRAY_SIZE(rtsx_pcr_cells), NULL, 0, NULL);
- if (ret < 0)
- goto disable_irq;
-
- schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200));
-
- return 0;
-
-disable_irq:
- free_irq(pcr->irq, (void *)pcr);
-disable_msi:
- if (pcr->msi_en)
- pci_disable_msi(pcr->pci);
- dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN,
- pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
-unmap:
- iounmap(pcr->remap_addr);
-free_handle:
- kfree(handle);
-free_pcr:
- kfree(pcr);
-release_pci:
- pci_release_regions(pcidev);
-disable:
- pci_disable_device(pcidev);
-
- return ret;
-}
-
-static void rtsx_pci_remove(struct pci_dev *pcidev)
-{
- struct pcr_handle *handle = pci_get_drvdata(pcidev);
- struct rtsx_pcr *pcr = handle->pcr;
-
- pcr->remove_pci = true;
-
- /* Disable interrupts at the pcr level */
- spin_lock_irq(&pcr->lock);
- rtsx_pci_writel(pcr, RTSX_BIER, 0);
- pcr->bier = 0;
- spin_unlock_irq(&pcr->lock);
-
- cancel_delayed_work_sync(&pcr->carddet_work);
- cancel_delayed_work_sync(&pcr->idle_work);
-
- mfd_remove_devices(&pcidev->dev);
-
- dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN,
- pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
- free_irq(pcr->irq, (void *)pcr);
- if (pcr->msi_en)
- pci_disable_msi(pcr->pci);
- iounmap(pcr->remap_addr);
-
- pci_release_regions(pcidev);
- pci_disable_device(pcidev);
-
- spin_lock(&rtsx_pci_lock);
- idr_remove(&rtsx_pci_idr, pcr->id);
- spin_unlock(&rtsx_pci_lock);
-
- kfree(pcr->slots);
- kfree(pcr);
- kfree(handle);
-
- dev_dbg(&(pcidev->dev),
- ": Realtek PCI-E Card Reader at %s [%04x:%04x] has been removed\n",
- pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device);
-}
-
-#ifdef CONFIG_PM
-
-static int rtsx_pci_suspend(struct pci_dev *pcidev, pm_message_t state)
-{
- struct pcr_handle *handle;
- struct rtsx_pcr *pcr;
-
- dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
-
- handle = pci_get_drvdata(pcidev);
- pcr = handle->pcr;
-
- cancel_delayed_work(&pcr->carddet_work);
- cancel_delayed_work(&pcr->idle_work);
-
- mutex_lock(&pcr->pcr_mutex);
-
- rtsx_pci_power_off(pcr, HOST_ENTER_S3);
-
- pci_save_state(pcidev);
- pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
- pci_disable_device(pcidev);
- pci_set_power_state(pcidev, pci_choose_state(pcidev, state));
-
- mutex_unlock(&pcr->pcr_mutex);
- return 0;
-}
-
-static int rtsx_pci_resume(struct pci_dev *pcidev)
-{
- struct pcr_handle *handle;
- struct rtsx_pcr *pcr;
- int ret = 0;
-
- dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
-
- handle = pci_get_drvdata(pcidev);
- pcr = handle->pcr;
-
- mutex_lock(&pcr->pcr_mutex);
-
- pci_set_power_state(pcidev, PCI_D0);
- pci_restore_state(pcidev);
- ret = pci_enable_device(pcidev);
- if (ret)
- goto out;
- pci_set_master(pcidev);
-
- ret = rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x00);
- if (ret)
- goto out;
-
- ret = rtsx_pci_init_hw(pcr);
- if (ret)
- goto out;
-
- schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200));
-
-out:
- mutex_unlock(&pcr->pcr_mutex);
- return ret;
-}
-
-static void rtsx_pci_shutdown(struct pci_dev *pcidev)
-{
- struct pcr_handle *handle;
- struct rtsx_pcr *pcr;
-
- dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
-
- handle = pci_get_drvdata(pcidev);
- pcr = handle->pcr;
- rtsx_pci_power_off(pcr, HOST_ENTER_S1);
-
- pci_disable_device(pcidev);
- free_irq(pcr->irq, (void *)pcr);
- if (pcr->msi_en)
- pci_disable_msi(pcr->pci);
-}
-
-#else /* CONFIG_PM */
-
-#define rtsx_pci_suspend NULL
-#define rtsx_pci_resume NULL
-#define rtsx_pci_shutdown NULL
-
-#endif /* CONFIG_PM */
-
-static struct pci_driver rtsx_pci_driver = {
- .name = DRV_NAME_RTSX_PCI,
- .id_table = rtsx_pci_ids,
- .probe = rtsx_pci_probe,
- .remove = rtsx_pci_remove,
- .suspend = rtsx_pci_suspend,
- .resume = rtsx_pci_resume,
- .shutdown = rtsx_pci_shutdown,
-};
-module_pci_driver(rtsx_pci_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>");
-MODULE_DESCRIPTION("Realtek PCI-E Card Reader Driver");
projects / mirror_ubuntu-bionic-kernel.git / commitdiff