194 lines
7.9 KiB
C
Executable File
194 lines
7.9 KiB
C
Executable File
/*
|
|
* linux/include/linux/mmc/sdhci.h - Secure Digital Host Controller 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.
|
|
*/
|
|
#ifndef LINUX_MMC_SDHCI_H
|
|
#define LINUX_MMC_SDHCI_H
|
|
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
#include <linux/io.h>
|
|
#include <linux/mmc/host.h>
|
|
|
|
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)
|
|
|
|
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 */
|
|
|
|
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 */
|
|
|
|
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 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 */
|
|
|
|
unsigned long private[0] ____cacheline_aligned;
|
|
};
|
|
#endif /* LINUX_MMC_SDHCI_H */
|