/*
* linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
*
- * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
+ * 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
*/
/*
- * 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
-
-/*
* Controller registers
*/
#define SDHCI_BLOCK_GAP_CONTROL 0x2A
-#define SDHCI_WALK_UP_CONTROL 0x2B
+#define SDHCI_WAKE_UP_CONTROL 0x2B
#define SDHCI_CLOCK_CONTROL 0x2C
#define SDHCI_DIVIDER_SHIFT 8
#define SDHCI_SPEC_VER_MASK 0x00FF
#define SDHCI_SPEC_VER_SHIFT 0
-struct sdhci_chip;
+struct sdhci_ops;
struct sdhci_host {
- struct sdhci_chip *chip;
+ /* Data set by hardware interface driver */
+ const char *hw_name; /* Hardware bus name */
+
+ unsigned int quirks; /* Deviations from spec. */
+
+/* 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 provides an incorrect timeout value for transfers */
+#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<10)
+
+ int irq; /* Device IRQ */
+ void __iomem * ioaddr; /* Mapped address */
+
+ const struct sdhci_ops *ops; /* Low level hw interface */
+
+ /* Internal data */
struct mmc_host *mmc; /* MMC structure */
+#ifdef CONFIG_LEDS_CLASS
+ struct led_classdev led; /* LED control */
+#endif
+
spinlock_t lock; /* Mutex */
int flags; /* Host attributes */
-#define SDHCI_USE_DMA (1<<0)
+#define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */
+#define SDHCI_REQ_USE_DMA (1<<1) /* Use DMA for this req. */
+#define SDHCI_DEVICE_DEAD (1<<2) /* Device unresponsive */
unsigned int max_clk; /* Max possible freq (MHz) */
unsigned int timeout_clk; /* Timeout freq (KHz) */
struct mmc_request *mrq; /* Current request */
struct mmc_command *cmd; /* Current command */
struct mmc_data *data; /* Current data request */
- int data_early:1; /* Data finished before cmd */
+ unsigned int data_early:1; /* Data finished before cmd */
struct scatterlist *cur_sg; /* We're working on this */
int num_sg; /* Entries left */
int offset; /* Offset into current sg */
int remain; /* Bytes left in current */
- char slot_descr[20]; /* Name for reservations */
-
- int irq; /* Device IRQ */
- int bar; /* PCI BAR index */
- unsigned long addr; /* Bus address */
- void __iomem * ioaddr; /* Mapped address */
-
struct tasklet_struct card_tasklet; /* Tasklet structures */
struct tasklet_struct finish_tasklet;
struct timer_list timer; /* Timer for timeouts */
-};
-struct sdhci_chip {
- struct pci_dev *pdev;
+ unsigned long private[0] ____cacheline_aligned;
+};
- unsigned long quirks;
- int num_slots; /* Slots on controller */
- struct sdhci_host *hosts[0]; /* Pointers to hosts */
+struct sdhci_ops {
+ int (*enable_dma)(struct sdhci_host *host);
};
+
+
+extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
+ size_t priv_size);
+extern void sdhci_free_host(struct sdhci_host *host);
+
+static inline void *sdhci_priv(struct sdhci_host *host)
+{
+ return (void *)host->private;
+}
+
+extern int sdhci_add_host(struct sdhci_host *host);
+extern void sdhci_remove_host(struct sdhci_host *host, int dead);
+
+#ifdef CONFIG_PM
+extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
+extern int sdhci_resume_host(struct sdhci_host *host);
+#endif
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