diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.h')
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 203 |
1 files changed, 202 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0315e1844330..e639b7f435e5 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -18,7 +18,7 @@ #include <linux/types.h> #include <linux/io.h> -#include <linux/mmc/sdhci.h> +#include <linux/mmc/host.h> /* * Controller registers @@ -309,6 +309,207 @@ struct sdhci_adma2_64_desc { */ #define SDHCI_MAX_SEGS 128 +struct sdhci_host_next { + unsigned int sg_count; + s32 cookie; +}; + +struct sdhci_host { + /* 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) +/* Controller has an issue with buffer bits for small transfers */ +#define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13) +/* Controller does not provide transfer-complete interrupt when not busy */ +#define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14) +/* Controller has unreliable card detection */ +#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15) +/* Controller reports inverted write-protect state */ +#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16) +/* Controller does not like fast PIO transfers */ +#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18) +/* Controller has to be forced to use block size of 2048 bytes */ +#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20) +/* Controller cannot do multi-block transfers */ +#define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21) +/* Controller can only handle 1-bit data transfers */ +#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22) +/* Controller needs 10ms delay between applying power and clock */ +#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23) +/* Controller uses SDCLK instead of TMCLK for data timeouts */ +#define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24) +/* Controller reports wrong base clock capability */ +#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25) +/* Controller cannot support End Attribute in NOP ADMA descriptor */ +#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26) +/* Controller is missing device caps. Use caps provided by host */ +#define SDHCI_QUIRK_MISSING_CAPS (1<<27) +/* Controller uses Auto CMD12 command to stop the transfer */ +#define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) +/* Controller doesn't have HISPD bit field in HI-SPEED SD card */ +#define SDHCI_QUIRK_NO_HISPD_BIT (1<<29) +/* Controller treats ADMA descriptors with length 0000h incorrectly */ +#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) +/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ +#define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) + + unsigned int quirks2; /* More deviations from spec. */ + +#define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0) +#define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) +/* The system physically doesn't support 1.8v, even if the host does */ +#define SDHCI_QUIRK2_NO_1_8_V (1<<2) +#define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3) +#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4) +/* Controller has a non-standard host control register */ +#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5) +/* Controller does not support HS200 */ +#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6) +/* Controller does not support DDR50 */ +#define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7) +/* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */ +#define SDHCI_QUIRK2_STOP_WITH_TC (1<<8) +/* Controller does not support 64-bit DMA */ +#define SDHCI_QUIRK2_BROKEN_64_BIT_DMA (1<<9) +/* need clear transfer mode register before send cmd */ +#define SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD (1<<10) +/* Capability register bit-63 indicates HS400 support */ +#define SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 (1<<11) +/* forced tuned clock */ +#define SDHCI_QUIRK2_TUNING_WORK_AROUND (1<<12) +/* disable the block count for single block transactions */ +#define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13) +/* Controller broken with using ACMD23 */ +#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14) + + 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 */ + +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) + struct led_classdev led; /* LED control */ + char led_name[32]; +#endif + + spinlock_t lock; /* Mutex */ + + int flags; /* Host attributes */ +#define SDHCI_USE_SDMA (1<<0) /* Host is SDMA capable */ +#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 */ +#define SDHCI_SDR50_NEEDS_TUNING (1<<4) /* SDR50 needs tuning */ +#define SDHCI_NEEDS_RETUNING (1<<5) /* Host needs retuning */ +#define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */ +#define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */ +#define SDHCI_PV_ENABLED (1<<8) /* Preset value enabled */ +#define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO irq enabled */ +#define SDHCI_SDR104_NEEDS_TUNING (1<<10) /* SDR104/HS200 needs tuning */ +#define SDHCI_USING_RETUNING_TIMER (1<<11) /* Host is using a retuning timer for the card */ +#define SDHCI_USE_64_BIT_DMA (1<<12) /* Use 64-bit DMA */ +#define SDHCI_HS400_TUNING (1<<13) /* Tuning for HS400 */ + + unsigned int version; /* SDHCI spec. version */ + + unsigned int max_clk; /* Max possible freq (MHz) */ + unsigned int timeout_clk; /* Timeout freq (KHz) */ + unsigned int clk_mul; /* Clock Muliplier value */ + + unsigned int clock; /* Current clock (MHz) */ + u8 pwr; /* Current voltage */ + + bool runtime_suspended; /* Host is runtime suspended */ + bool bus_on; /* Bus power prevents runtime suspend */ + bool preset_enabled; /* Preset is enabled */ + + struct mmc_request *mrq; /* Current request */ + struct mmc_command *cmd; /* Current command */ + struct mmc_data *data; /* Current data request */ + unsigned int data_early:1; /* Data finished before cmd */ + unsigned int busy_handle:1; /* Handling the order of Busy-end */ + + struct sg_mapping_iter sg_miter; /* SG state for PIO */ + unsigned int blocks; /* remaining PIO blocks */ + + int sg_count; /* Mapped sg entries */ + + void *adma_table; /* ADMA descriptor table */ + void *align_buffer; /* Bounce buffer */ + + size_t adma_table_sz; /* ADMA descriptor table size */ + size_t align_buffer_sz; /* Bounce buffer size */ + + dma_addr_t adma_addr; /* Mapped ADMA descr. table */ + dma_addr_t align_addr; /* Mapped bounce buffer */ + + unsigned int desc_sz; /* ADMA descriptor size */ + unsigned int align_sz; /* ADMA alignment */ + unsigned int align_mask; /* ADMA alignment mask */ + + struct tasklet_struct finish_tasklet; /* Tasklet structures */ + + struct timer_list timer; /* Timer for timeouts */ + + u32 caps; /* Alternative CAPABILITY_0 */ + u32 caps1; /* Alternative CAPABILITY_1 */ + + unsigned int ocr_avail_sdio; /* OCR bit masks */ + unsigned int ocr_avail_sd; + unsigned int ocr_avail_mmc; + u32 ocr_mask; /* available voltages */ + + unsigned timing; /* Current timing */ + + u32 thread_isr; + + /* cached registers */ + u32 ier; + + wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */ + unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */ + + unsigned int tuning_count; /* Timer count for re-tuning */ + unsigned int tuning_mode; /* Re-tuning mode supported by host */ +#define SDHCI_TUNING_MODE_1 0 + struct timer_list tuning_timer; /* Timer for tuning */ + + struct sdhci_host_next next_data; + unsigned long private[0] ____cacheline_aligned; +}; + struct sdhci_ops { #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS u32 (*read_l)(struct sdhci_host *host, int reg); |