diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.h')
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 127 |
1 files changed, 98 insertions, 29 deletions
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 299118de8933..e354faee5df0 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -9,17 +9,7 @@ * your option) any later version. */ -/* - * 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 +#include <linux/scatterlist.h> /* * Controller registers @@ -72,6 +62,11 @@ #define SDHCI_CTRL_LED 0x01 #define SDHCI_CTRL_4BITBUS 0x02 #define SDHCI_CTRL_HISPD 0x04 +#define SDHCI_CTRL_DMA_MASK 0x18 +#define SDHCI_CTRL_SDMA 0x00 +#define SDHCI_CTRL_ADMA1 0x08 +#define SDHCI_CTRL_ADMA32 0x10 +#define SDHCI_CTRL_ADMA64 0x18 #define SDHCI_POWER_CONTROL 0x29 #define SDHCI_POWER_ON 0x01 @@ -117,6 +112,7 @@ #define SDHCI_INT_DATA_END_BIT 0x00400000 #define SDHCI_INT_BUS_POWER 0x00800000 #define SDHCI_INT_ACMD12ERR 0x01000000 +#define SDHCI_INT_ADMA_ERROR 0x02000000 #define SDHCI_INT_NORMAL_MASK 0x00007FFF #define SDHCI_INT_ERROR_MASK 0xFFFF8000 @@ -140,11 +136,14 @@ #define SDHCI_CLOCK_BASE_SHIFT 8 #define SDHCI_MAX_BLOCK_MASK 0x00030000 #define SDHCI_MAX_BLOCK_SHIFT 16 +#define SDHCI_CAN_DO_ADMA2 0x00080000 +#define SDHCI_CAN_DO_ADMA1 0x00100000 #define SDHCI_CAN_DO_HISPD 0x00200000 #define SDHCI_CAN_DO_DMA 0x00400000 #define SDHCI_CAN_VDD_330 0x01000000 #define SDHCI_CAN_VDD_300 0x02000000 #define SDHCI_CAN_VDD_180 0x04000000 +#define SDHCI_CAN_64BIT 0x10000000 /* 44-47 reserved for more caps */ @@ -152,7 +151,16 @@ /* 4C-4F reserved for more max current */ -/* 50-FB reserved */ +#define SDHCI_SET_ACMD12_ERROR 0x50 +#define SDHCI_SET_INT_ERROR 0x52 + +#define SDHCI_ADMA_ERROR 0x54 + +/* 55-57 reserved */ + +#define SDHCI_ADMA_ADDRESS 0x58 + +/* 60-FB reserved */ #define SDHCI_SLOT_INT_STATUS 0xFC @@ -161,12 +169,52 @@ #define SDHCI_VENDOR_VER_SHIFT 8 #define SDHCI_SPEC_VER_MASK 0x00FF #define SDHCI_SPEC_VER_SHIFT 0 +#define SDHCI_SPEC_100 0 +#define SDHCI_SPEC_200 1 -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 has an unusable ADMA engine */ +#define SDHCI_QUIRK_BROKEN_ADMA (1<<6) +/* Controller can only DMA from 32-bit aligned addresses */ +#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7) +/* Controller can only DMA chunk sizes that are a multiple of 32 bits */ +#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8) +/* Controller can only ADMA chunks that are a multiple of 32 bits */ +#define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9) +/* Controller needs to be reset after each request to stay stable */ +#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10) +/* Controller needs voltage and power writes to happen separately */ +#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11) +/* Controller provides an incorrect timeout value for transfers */ +#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12) + + 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 */ + u64 dma_mask; /* custom DMA mask */ #ifdef CONFIG_LEDS_CLASS struct led_classdev led; /* LED control */ @@ -176,7 +224,11 @@ struct sdhci_host { int flags; /* Host attributes */ #define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */ -#define SDHCI_REQ_USE_DMA (1<<1) /* Use DMA for this req. */ +#define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */ +#define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */ +#define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */ + + unsigned int version; /* SDHCI spec. version */ unsigned int max_clk; /* Max possible freq (MHz) */ unsigned int timeout_clk; /* Timeout freq (KHz) */ @@ -189,27 +241,44 @@ struct sdhci_host { struct mmc_data *data; /* Current data request */ 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 */ + struct sg_mapping_iter sg_miter; /* SG state for PIO */ + unsigned int blocks; /* remaining PIO blocks */ - int irq; /* Device IRQ */ - int bar; /* PCI BAR index */ - unsigned long addr; /* Bus address */ - void __iomem * ioaddr; /* Mapped address */ + int sg_count; /* Mapped sg entries */ + + u8 *adma_desc; /* ADMA descriptor table */ + u8 *align_buffer; /* Bounce buffer */ + + dma_addr_t adma_addr; /* Mapped ADMA descr. table */ + dma_addr_t align_addr; /* Mapped bounce buffer */ 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 |