--- /dev/null
+/* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
+ *
+ * Copyright (C) 2005-2008 Pierre Ossman, 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 of the License, or (at
+ * your option) any later version.
+ *
+ * Thanks to the following companies for their support:
+ *
+ * - JMicron (hardware and technical support)
+ */
+
+#include <linux/delay.h>
+#include <linux/highmem.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/mmc/host.h>
+
+#include <asm/scatterlist.h>
+#include <asm/io.h>
+
+#include "sdhci.h"
+
+/*
+ * PCI registers
+ */
+
+#define PCI_SDHCI_IFPIO 0x00
+#define PCI_SDHCI_IFDMA 0x01
+#define PCI_SDHCI_IFVENDOR 0x02
+
+#define PCI_SLOT_INFO 0x40 /* 8 bits */
+#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
+#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
+
+#define MAX_SLOTS 8
+
+static const struct pci_device_id pci_ids[] __devinitdata = {
+ {
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = PCI_DEVICE_ID_RICOH_R5C822,
+ .subvendor = PCI_VENDOR_ID_IBM,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET |
+ SDHCI_QUIRK_FORCE_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = PCI_DEVICE_ID_RICOH_R5C822,
+ .subvendor = PCI_VENDOR_ID_SAMSUNG,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_FORCE_DMA |
+ SDHCI_QUIRK_NO_CARD_NO_RESET,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = PCI_DEVICE_ID_RICOH_R5C822,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_FORCE_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_TI,
+ .device = PCI_DEVICE_ID_TI_XX21_XX11_SD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_FORCE_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_ENE,
+ .device = PCI_DEVICE_ID_ENE_CB712_SD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_BROKEN_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_ENE,
+ .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_BROKEN_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_ENE,
+ .device = PCI_DEVICE_ID_ENE_CB714_SD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
+ SDHCI_QUIRK_BROKEN_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_ENE,
+ .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
+ SDHCI_QUIRK_BROKEN_DMA,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_MARVELL,
+ .device = PCI_DEVICE_ID_MARVELL_CAFE_SD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
+ SDHCI_QUIRK_INCR_TIMEOUT_CONTROL,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_JMICRON,
+ .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_32BIT_DMA_ADDR |
+ SDHCI_QUIRK_32BIT_DMA_SIZE |
+ SDHCI_QUIRK_RESET_AFTER_REQUEST,
+ },
+
+ { /* Generic SD host controller */
+ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
+ },
+
+ { /* end: all zeroes */ },
+};
+
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+struct sdhci_pci_chip;
+
+struct sdhci_pci_slot {
+ struct sdhci_pci_chip *chip;
+ struct sdhci_host *host;
+
+ int pci_bar;
+};
+
+struct sdhci_pci_chip {
+ struct pci_dev *pdev;
+ unsigned int quirks;
+
+ int num_slots; /* Slots on controller */
+ struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
+};
+
+/*****************************************************************************\
+ * *
+ * SDHCI core callbacks *
+ * *
+\*****************************************************************************/
+
+static int sdhci_pci_enable_dma(struct sdhci_host *host)
+{
+ struct sdhci_pci_slot *slot;
+ struct pci_dev *pdev;
+ int ret;
+
+ slot = sdhci_priv(host);
+ pdev = slot->chip->pdev;
+
+ if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
+ ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
+ (host->flags & SDHCI_USE_DMA)) {
+ dev_warn(&pdev->dev, "Will use DMA mode even though HW "
+ "doesn't fully claim to support it.\n");
+ }
+
+ ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+ if (ret)
+ return ret;
+
+ pci_set_master(pdev);
+
+ return 0;
+}
+
+static struct sdhci_ops sdhci_pci_ops = {
+ .enable_dma = sdhci_pci_enable_dma,
+};
+
+/*****************************************************************************\
+ * *
+ * Suspend/resume *
+ * *
+\*****************************************************************************/
+
+#ifdef CONFIG_PM
+
+static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
+{
+ struct sdhci_pci_chip *chip;
+ struct sdhci_pci_slot *slot;
+ int i, ret;
+
+ chip = pci_get_drvdata(pdev);
+ if (!chip)
+ return 0;
+
+ for (i = 0;i < chip->num_slots;i++) {
+ slot = chip->slots[i];
+ if (!slot)
+ continue;
+
+ ret = sdhci_suspend_host(slot->host, state);
+
+ if (ret) {
+ for (i--;i >= 0;i--)
+ sdhci_resume_host(chip->slots[i]->host);
+ return ret;
+ }
+ }
+
+ pci_save_state(pdev);
+ pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+static int sdhci_pci_resume (struct pci_dev *pdev)
+{
+ struct sdhci_pci_chip *chip;
+ struct sdhci_pci_slot *slot;
+ int i, ret;
+
+ chip = pci_get_drvdata(pdev);
+ if (!chip)
+ return 0;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ ret = pci_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ for (i = 0;i < chip->num_slots;i++) {
+ slot = chip->slots[i];
+ if (!slot)
+ continue;
+
+ ret = sdhci_resume_host(slot->host);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+#else /* CONFIG_PM */
+
+#define sdhci_pci_suspend NULL
+#define sdhci_pci_resume NULL
+
+#endif /* CONFIG_PM */
+
+/*****************************************************************************\
+ * *
+ * Device probing/removal *
+ * *
+\*****************************************************************************/
+
+static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
+ struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
+{
+ struct sdhci_pci_slot *slot;
+ struct sdhci_host *host;
+
+ resource_size_t addr;
+
+ int ret;
+
+ if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
+ dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
+ return ERR_PTR(-ENODEV);
+ }
+
+ if (pci_resource_len(pdev, bar) != 0x100) {
+ dev_err(&pdev->dev, "Invalid iomem size. You may "
+ "experience problems.\n");
+ }
+
+ if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
+ dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
+ dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
+ if (IS_ERR(host)) {
+ ret = PTR_ERR(host);
+ goto unmap;
+ }
+
+ slot = sdhci_priv(host);
+
+ slot->chip = chip;
+ slot->host = host;
+ slot->pci_bar = bar;
+
+ host->hw_name = "PCI";
+ host->ops = &sdhci_pci_ops;
+ host->quirks = chip->quirks;
+
+ host->irq = pdev->irq;
+
+ ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
+ if (ret) {
+ dev_err(&pdev->dev, "cannot request region\n");
+ return ERR_PTR(ret);
+ }
+
+ addr = pci_resource_start(pdev, bar);
+ host->ioaddr = ioremap_nocache(addr, pci_resource_len(pdev, bar));
+ if (!host->ioaddr) {
+ dev_err(&pdev->dev, "failed to remap registers\n");
+ goto release;
+ }
+
+ ret = sdhci_add_host(host);
+ if (ret)
+ goto unmap;
+
+ return slot;
+
+unmap:
+ iounmap(host->ioaddr);
+
+release:
+ pci_release_region(pdev, bar);
+ sdhci_free_host(host);
+
+ return ERR_PTR(ret);
+}
+
+static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
+{
+ sdhci_remove_host(slot->host);
+ pci_release_region(slot->chip->pdev, slot->pci_bar);
+ sdhci_free_host(slot->host);
+}
+
+static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct sdhci_pci_chip *chip;
+ struct sdhci_pci_slot *slot;
+
+ u8 slots, rev, first_bar;
+ int ret, i;
+
+ BUG_ON(pdev == NULL);
+ BUG_ON(ent == NULL);
+
+ pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
+
+ dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
+ (int)pdev->vendor, (int)pdev->device, (int)rev);
+
+ ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
+ if (ret)
+ return ret;
+
+ slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
+ dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
+ if (slots == 0)
+ return -ENODEV;
+
+ BUG_ON(slots > MAX_SLOTS);
+
+ ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
+ if (ret)
+ return ret;
+
+ first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
+
+ if (first_bar > 5) {
+ dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
+ return -ENODEV;
+ }
+
+ ret = pci_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
+ if (!chip) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ chip->pdev = pdev;
+ chip->quirks = ent->driver_data;
+ chip->num_slots = slots;
+
+ pci_set_drvdata(pdev, chip);
+
+ for (i = 0;i < slots;i++) {
+ slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
+ if (IS_ERR(slot)) {
+ for (i--;i >= 0;i--)
+ sdhci_pci_remove_slot(chip->slots[i]);
+ ret = PTR_ERR(slot);
+ goto free;
+ }
+
+ chip->slots[i] = slot;
+ }
+
+ return 0;
+
+free:
+ pci_set_drvdata(pdev, NULL);
+ kfree(chip);
+
+err:
+ pci_disable_device(pdev);
+ return ret;
+}
+
+static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
+{
+ int i;
+ struct sdhci_pci_chip *chip;
+
+ chip = pci_get_drvdata(pdev);
+
+ if (chip) {
+ for (i = 0;i < chip->num_slots; i++)
+ sdhci_pci_remove_slot(chip->slots[i]);
+
+ pci_set_drvdata(pdev, NULL);
+ kfree(chip);
+ }
+
+ pci_disable_device(pdev);
+}
+
+static struct pci_driver sdhci_driver = {
+ .name = "sdhci-pci",
+ .id_table = pci_ids,
+ .probe = sdhci_pci_probe,
+ .remove = __devexit_p(sdhci_pci_remove),
+ .suspend = sdhci_pci_suspend,
+ .resume = sdhci_pci_resume,
+};
+
+/*****************************************************************************\
+ * *
+ * Driver init/exit *
+ * *
+\*****************************************************************************/
+
+static int __init sdhci_drv_init(void)
+{
+ return pci_register_driver(&sdhci_driver);
+}
+
+static void __exit sdhci_drv_exit(void)
+{
+ pci_unregister_driver(&sdhci_driver);
+}
+
+module_init(sdhci_drv_init);
+module_exit(sdhci_drv_exit);
+
+MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
+MODULE_LICENSE("GPL");
#include <linux/delay.h>
#include <linux/highmem.h>
-#include <linux/pci.h>
+#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
static unsigned int debug_quirks = 0;
-/*
- * Different quirks to handle when the hardware deviates from a strict
- * interpretation of the SDHCI specification.
- */
-
-/* Controller doesn't honor resets unless we touch the clock register */
-#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
-/* Controller has bad caps bits, but really supports DMA */
-#define SDHCI_QUIRK_FORCE_DMA (1<<1)
-/* Controller doesn't like to be reset when there is no card inserted. */
-#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2)
-/* Controller doesn't like clearing the power reg before a change */
-#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3)
-/* Controller has flaky internal state so reset it on each ios change */
-#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4)
-/* Controller has an unusable DMA engine */
-#define SDHCI_QUIRK_BROKEN_DMA (1<<5)
-/* Controller can only DMA from 32-bit aligned addresses */
-#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<6)
-/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
-#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<7)
-/* Controller needs to be reset after each request to stay stable */
-#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<8)
-/* Controller needs voltage and power writes to happen separately */
-#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<9)
-/* Controller has an off-by-one issue with timeout value */
-#define SDHCI_QUIRK_INCR_TIMEOUT_CONTROL (1<<10)
-
-static const struct pci_device_id pci_ids[] __devinitdata = {
- {
- .vendor = PCI_VENDOR_ID_RICOH,
- .device = PCI_DEVICE_ID_RICOH_R5C822,
- .subvendor = PCI_VENDOR_ID_IBM,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET |
- SDHCI_QUIRK_FORCE_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_RICOH,
- .device = PCI_DEVICE_ID_RICOH_R5C822,
- .subvendor = PCI_VENDOR_ID_SAMSUNG,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_FORCE_DMA |
- SDHCI_QUIRK_NO_CARD_NO_RESET,
- },
-
- {
- .vendor = PCI_VENDOR_ID_RICOH,
- .device = PCI_DEVICE_ID_RICOH_R5C822,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_FORCE_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_TI,
- .device = PCI_DEVICE_ID_TI_XX21_XX11_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_FORCE_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_ENE,
- .device = PCI_DEVICE_ID_ENE_CB712_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
- SDHCI_QUIRK_BROKEN_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_ENE,
- .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
- SDHCI_QUIRK_BROKEN_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_ENE,
- .device = PCI_DEVICE_ID_ENE_CB714_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
- SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
- SDHCI_QUIRK_BROKEN_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_ENE,
- .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE |
- SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
- SDHCI_QUIRK_BROKEN_DMA,
- },
-
- {
- .vendor = PCI_VENDOR_ID_MARVELL,
- .device = PCI_DEVICE_ID_MARVELL_CAFE_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
- SDHCI_QUIRK_INCR_TIMEOUT_CONTROL,
- },
-
- {
- .vendor = PCI_VENDOR_ID_JMICRON,
- .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = SDHCI_QUIRK_32BIT_DMA_ADDR |
- SDHCI_QUIRK_32BIT_DMA_SIZE |
- SDHCI_QUIRK_RESET_AFTER_REQUEST,
- },
-
- { /* Generic SD host controller */
- PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
- },
-
- { /* end: all zeroes */ },
-};
-
-MODULE_DEVICE_TABLE(pci, pci_ids);
-
static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *);
static void sdhci_finish_data(struct sdhci_host *);
{
unsigned long timeout;
- if (host->chip->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
+ if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
SDHCI_CARD_PRESENT))
return;
* Compensate for an off-by-one error in the CaFe hardware; otherwise,
* a too-small count gives us interrupt timeouts.
*/
- if ((host->chip->quirks & SDHCI_QUIRK_INCR_TIMEOUT_CONTROL))
+ if ((host->quirks & SDHCI_QUIRK_INCR_TIMEOUT_CONTROL))
count++;
if (count >= 0xF) {
host->flags |= SDHCI_REQ_USE_DMA;
if (unlikely((host->flags & SDHCI_REQ_USE_DMA) &&
- (host->chip->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) &&
+ (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) &&
((data->blksz * data->blocks) & 0x3))) {
DBG("Reverting to PIO because of transfer size (%d)\n",
data->blksz * data->blocks);
* translation to device address space.
*/
if (unlikely((host->flags & SDHCI_REQ_USE_DMA) &&
- (host->chip->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
+ (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
(data->sg->offset & 0x3))) {
DBG("Reverting to PIO because of bad alignment\n");
host->flags &= ~SDHCI_REQ_USE_DMA;
if (host->flags & SDHCI_REQ_USE_DMA) {
int count;
- count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len,
- (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
- BUG_ON(count != 1);
+ count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ (data->flags & MMC_DATA_READ) ?
+ DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ WARN_ON(count != 1);
- writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS);
+ writel(sg_dma_address(data->sg),
+ host->ioaddr + SDHCI_DMA_ADDRESS);
} else {
host->cur_sg = data->sg;
host->num_sg = data->sg_len;
host->data = NULL;
if (host->flags & SDHCI_REQ_USE_DMA) {
- pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len,
- (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
+ dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ (data->flags & MMC_DATA_READ) ?
+ DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
/*
* Spec says that we should clear the power reg before setting
* a new value. Some controllers don't seem to like this though.
*/
- if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
+ if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
pwr = SDHCI_POWER_ON;
* At least the CaFe chip gets confused if we set the voltage
* and set turn on power at the same time, so set the voltage first.
*/
- if ((host->chip->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
+ if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
writeb(pwr & ~SDHCI_POWER_ON,
host->ioaddr + SDHCI_POWER_CONTROL);
* signalling timeout and CRC errors even on CMD0. Resetting
* it on each ios seems to solve the problem.
*/
- if(host->chip->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
+ if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
mmiowb();
if (mrq->cmd->error ||
(mrq->data && (mrq->data->error ||
(mrq->data->stop && mrq->data->stop->error))) ||
- (host->chip->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)) {
+ (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)) {
/* Some controllers need this kick or reset won't work here */
- if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
+ if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
unsigned int clock;
/* This is to force an update */
#ifdef CONFIG_PM
-static int sdhci_suspend (struct pci_dev *pdev, pm_message_t state)
+int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state)
{
- struct sdhci_chip *chip;
- int i, ret;
-
- chip = pci_get_drvdata(pdev);
- if (!chip)
- return 0;
-
- DBG("Suspending...\n");
-
- for (i = 0;i < chip->num_slots;i++) {
- if (!chip->hosts[i])
- continue;
- ret = mmc_suspend_host(chip->hosts[i]->mmc, state);
- if (ret) {
- for (i--;i >= 0;i--)
- mmc_resume_host(chip->hosts[i]->mmc);
- return ret;
- }
- }
-
- pci_save_state(pdev);
- pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
+ int ret;
- for (i = 0;i < chip->num_slots;i++) {
- if (!chip->hosts[i])
- continue;
- free_irq(chip->hosts[i]->irq, chip->hosts[i]);
- }
+ ret = mmc_suspend_host(host->mmc, state);
+ if (ret)
+ return ret;
- pci_disable_device(pdev);
- pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ free_irq(host->irq, host);
return 0;
}
-static int sdhci_resume (struct pci_dev *pdev)
-{
- struct sdhci_chip *chip;
- int i, ret;
+EXPORT_SYMBOL_GPL(sdhci_suspend_host);
- chip = pci_get_drvdata(pdev);
- if (!chip)
- return 0;
+int sdhci_resume_host(struct sdhci_host *host)
+{
+ int ret;
- DBG("Resuming...\n");
+ if (host->flags & SDHCI_USE_DMA) {
+ if (host->ops->enable_dma)
+ host->ops->enable_dma(host);
+ }
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- ret = pci_enable_device(pdev);
+ ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
+ mmc_hostname(host->mmc), host);
if (ret)
return ret;
- for (i = 0;i < chip->num_slots;i++) {
- if (!chip->hosts[i])
- continue;
- if (chip->hosts[i]->flags & SDHCI_USE_DMA)
- pci_set_master(pdev);
- ret = request_irq(chip->hosts[i]->irq, sdhci_irq,
- IRQF_SHARED, mmc_hostname(chip->hosts[i]->mmc),
- chip->hosts[i]);
- if (ret)
- return ret;
- sdhci_init(chip->hosts[i]);
- mmiowb();
- ret = mmc_resume_host(chip->hosts[i]->mmc);
- if (ret)
- return ret;
- }
+ sdhci_init(host);
+ mmiowb();
+
+ ret = mmc_resume_host(host->mmc);
+ if (ret)
+ return ret;
return 0;
}
-#else /* CONFIG_PM */
-
-#define sdhci_suspend NULL
-#define sdhci_resume NULL
+EXPORT_SYMBOL_GPL(sdhci_resume_host);
#endif /* CONFIG_PM */
/*****************************************************************************\
* *
- * Device probing/removal *
+ * Device allocation/registration *
* *
\*****************************************************************************/
-static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
+struct sdhci_host *sdhci_alloc_host(struct device *dev,
+ size_t priv_size)
{
- int ret;
- unsigned int version;
- struct sdhci_chip *chip;
struct mmc_host *mmc;
struct sdhci_host *host;
- u8 first_bar;
- unsigned int caps;
-
- chip = pci_get_drvdata(pdev);
- BUG_ON(!chip);
-
- ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
- if (ret)
- return ret;
-
- first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
+ WARN_ON(dev == NULL);
- if (first_bar > 5) {
- printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n");
- return -ENODEV;
- }
-
- if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) {
- printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n");
- return -ENODEV;
- }
-
- if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
- printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. "
- "You may experience problems.\n");
- }
-
- if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
- printk(KERN_ERR DRIVER_NAME ": Vendor specific interface. Aborting.\n");
- return -ENODEV;
- }
-
- if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
- printk(KERN_ERR DRIVER_NAME ": Unknown interface. Aborting.\n");
- return -ENODEV;
- }
-
- mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev);
+ mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev);
if (!mmc)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
host = mmc_priv(mmc);
host->mmc = mmc;
- host->chip = chip;
- chip->hosts[slot] = host;
+ return host;
+}
- host->bar = first_bar + slot;
+EXPORT_SYMBOL_GPL(sdhci_alloc_host);
- host->addr = pci_resource_start(pdev, host->bar);
- host->irq = pdev->irq;
+int sdhci_add_host(struct sdhci_host *host)
+{
+ struct mmc_host *mmc;
+ unsigned int caps;
+ unsigned int version;
+ int ret;
- DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq);
+ WARN_ON(host == NULL);
+ if (host == NULL)
+ return -EINVAL;
- ret = pci_request_region(pdev, host->bar, mmc_hostname(mmc));
- if (ret)
- goto free;
+ mmc = host->mmc;
- host->ioaddr = ioremap_nocache(host->addr,
- pci_resource_len(pdev, host->bar));
- if (!host->ioaddr) {
- ret = -ENOMEM;
- goto release;
- }
+ if (debug_quirks)
+ host->quirks = debug_quirks;
sdhci_reset(host, SDHCI_RESET_ALL);
caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
- if (chip->quirks & SDHCI_QUIRK_FORCE_DMA)
+ if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_DMA;
else if (!(caps & SDHCI_CAN_DO_DMA))
DBG("Controller doesn't have DMA capability\n");
else
host->flags |= SDHCI_USE_DMA;
- if ((chip->quirks & SDHCI_QUIRK_BROKEN_DMA) &&
+ if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) &&
(host->flags & SDHCI_USE_DMA)) {
DBG("Disabling DMA as it is marked broken\n");
host->flags &= ~SDHCI_USE_DMA;
}
- if (((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
- (host->flags & SDHCI_USE_DMA)) {
- printk(KERN_WARNING "%s: Will use DMA "
- "mode even though HW doesn't fully "
- "claim to support it.\n", mmc_hostname(mmc));
- }
-
if (host->flags & SDHCI_USE_DMA) {
- if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
- printk(KERN_WARNING "%s: No suitable DMA available. "
- "Falling back to PIO.\n", mmc_hostname(mmc));
- host->flags &= ~SDHCI_USE_DMA;
+ if (host->ops->enable_dma) {
+ if (host->ops->enable_dma(host)) {
+ printk(KERN_WARNING "%s: No suitable DMA "
+ "available. Falling back to PIO.\n",
+ mmc_hostname(mmc));
+ host->flags &= ~SDHCI_USE_DMA;
+ }
}
}
- if (host->flags & SDHCI_USE_DMA)
- pci_set_master(pdev);
- else /* XXX: Hack to get MMC layer to avoid highmem */
- pdev->dma_mask = 0;
+ /* XXX: Hack to get MMC layer to avoid highmem */
+ if (!(host->flags & SDHCI_USE_DMA))
+ mmc_dev(host->mmc)->dma_mask = 0;
host->max_clk =
(caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
if (host->max_clk == 0) {
printk(KERN_ERR "%s: Hardware doesn't specify base clock "
"frequency.\n", mmc_hostname(mmc));
- ret = -ENODEV;
- goto unmap;
+ return -ENODEV;
}
host->max_clk *= 1000000;
if (host->timeout_clk == 0) {
printk(KERN_ERR "%s: Hardware doesn't specify timeout clock "
"frequency.\n", mmc_hostname(mmc));
- ret = -ENODEV;
- goto unmap;
+ return -ENODEV;
}
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
if (mmc->ocr_avail == 0) {
printk(KERN_ERR "%s: Hardware doesn't report any "
"support voltages.\n", mmc_hostname(mmc));
- ret = -ENODEV;
- goto unmap;
+ return -ENODEV;
}
spin_lock_init(&host->lock);
host->led.default_trigger = mmc_hostname(mmc);
host->led.brightness_set = sdhci_led_control;
- ret = led_classdev_register(&pdev->dev, &host->led);
+ ret = led_classdev_register(mmc_dev(mmc), &host->led);
if (ret)
goto reset;
#endif
mmc_add_host(mmc);
- printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n",
- mmc_hostname(mmc), host->addr, host->irq,
+ printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s\n",
+ mmc_hostname(mmc), host->hw_name, mmc_dev(mmc)->bus_id,
(host->flags & SDHCI_USE_DMA)?"DMA":"PIO");
return 0;
untasklet:
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
-unmap:
- iounmap(host->ioaddr);
-release:
- pci_release_region(pdev, host->bar);
-free:
- mmc_free_host(mmc);
return ret;
}
-static void sdhci_remove_slot(struct pci_dev *pdev, int slot)
-{
- struct sdhci_chip *chip;
- struct mmc_host *mmc;
- struct sdhci_host *host;
-
- chip = pci_get_drvdata(pdev);
- host = chip->hosts[slot];
- mmc = host->mmc;
-
- chip->hosts[slot] = NULL;
+EXPORT_SYMBOL_GPL(sdhci_add_host);
- mmc_remove_host(mmc);
+void sdhci_remove_host(struct sdhci_host *host)
+{
+ mmc_remove_host(host->mmc);
#ifdef CONFIG_LEDS_CLASS
led_classdev_unregister(&host->led);
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
-
- iounmap(host->ioaddr);
-
- pci_release_region(pdev, host->bar);
-
- mmc_free_host(mmc);
}
-static int __devinit sdhci_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- int ret, i;
- u8 slots, rev;
- struct sdhci_chip *chip;
-
- BUG_ON(pdev == NULL);
- BUG_ON(ent == NULL);
-
- pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
-
- printk(KERN_INFO DRIVER_NAME
- ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n",
- pci_name(pdev), (int)pdev->vendor, (int)pdev->device,
- (int)rev);
-
- ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
- if (ret)
- return ret;
-
- slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
- DBG("found %d slot(s)\n", slots);
- if (slots == 0)
- return -ENODEV;
+EXPORT_SYMBOL_GPL(sdhci_remove_host);
- ret = pci_enable_device(pdev);
- if (ret)
- return ret;
-
- chip = kzalloc(sizeof(struct sdhci_chip) +
- sizeof(struct sdhci_host*) * slots, GFP_KERNEL);
- if (!chip) {
- ret = -ENOMEM;
- goto err;
- }
-
- chip->pdev = pdev;
- chip->quirks = ent->driver_data;
-
- if (debug_quirks)
- chip->quirks = debug_quirks;
-
- chip->num_slots = slots;
- pci_set_drvdata(pdev, chip);
-
- for (i = 0;i < slots;i++) {
- ret = sdhci_probe_slot(pdev, i);
- if (ret) {
- for (i--;i >= 0;i--)
- sdhci_remove_slot(pdev, i);
- goto free;
- }
- }
-
- return 0;
-
-free:
- pci_set_drvdata(pdev, NULL);
- kfree(chip);
-
-err:
- pci_disable_device(pdev);
- return ret;
-}
-
-static void __devexit sdhci_remove(struct pci_dev *pdev)
+void sdhci_free_host(struct sdhci_host *host)
{
- int i;
- struct sdhci_chip *chip;
-
- chip = pci_get_drvdata(pdev);
-
- if (chip) {
- for (i = 0;i < chip->num_slots;i++)
- sdhci_remove_slot(pdev, i);
-
- pci_set_drvdata(pdev, NULL);
-
- kfree(chip);
- }
-
- pci_disable_device(pdev);
+ mmc_free_host(host->mmc);
}
-static struct pci_driver sdhci_driver = {
- .name = DRIVER_NAME,
- .id_table = pci_ids,
- .probe = sdhci_probe,
- .remove = __devexit_p(sdhci_remove),
- .suspend = sdhci_suspend,
- .resume = sdhci_resume,
-};
+EXPORT_SYMBOL_GPL(sdhci_free_host);
/*****************************************************************************\
* *
": Secure Digital Host Controller Interface driver\n");
printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
- return pci_register_driver(&sdhci_driver);
+ return 0;
}
static void __exit sdhci_drv_exit(void)
{
- DBG("Exiting\n");
-
- pci_unregister_driver(&sdhci_driver);
}
module_init(sdhci_drv_init);
module_param(debug_quirks, uint, 0444);
MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
-MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver");
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver");
MODULE_LICENSE("GPL");
MODULE_PARM_DESC(debug_quirks, "Force certain quirks.");
projects / linux-2.6 / commitdiff