d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
eff83876b6
freebsd-skq/sys/dev/sdhci/sdhci.h
Adrian Chadd 93efdc635d Add support for the BCM57765 card reader. 
This patch adds support for the BCM57765[2] card reader function included in
Broadcom's BCM57766 ethernet/sd3.0 controller. This controller is commonly
found in laptops and Apple hardware (MBP, iMac, etc).

The BCM57765 chipset is almost fully compatible with the SD3.0 spec, but
does not support deriving a frequency below 781KHz from its default base
clock via the standard SD3.0-configured 10-bit clock divisor.

If such a divisor is set, card identification (which requires a 400KHz
clock frequency) will time out[1].

As a work-around, I've made use of an undocumented device-specific clock
control register to switch the controller to a 63MHz clock source when
targeting clock speeds below 781KHz; the clock source is likewise switched
back to the 200MHz clock when targeting speeds greater than 781KHz.

Additionally, this patch fixes a small sdhci_pci bug; the
sdhci_pci_softc->quirks flag was not copied to the sdhci_slot, resulting in
`quirk` behavior not being applied by sdhci.c.

[1] A number of Linux/FreeBSD users have noted that bringing up the chipsets'
associated ethernet interface will allow SD cards to enumerate (slowly).
This is a controller implementation side-effect triggered by the ethernet
driver's reading of the hardware statistics registers.

[2] This may also fix card detection when using the BCM57785 chipset, but I
don't have access to the BCM57785 chipset and can't verify.

I actually snagged some BCM57785 hardware recently (2012 Retina MacBook Pro)
and can confirm that this also fixes card enumeration with the BCM57785
chipset; with the patch, I can boot off of the internal sdcard reader.

PR:		kern/203385
Submitted by:	Landon Fuller <landon@landonf.org>
2015-10-15 04:22:56 +00:00

324 lines
12 KiB
C
Raw Blame History

/*-
* Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __SDHCI_H__
#define __SDHCI_H__
#define DMA_BLOCK_SIZE 4096
#define DMA_BOUNDARY 0 /* DMA reload every 4K */
/* Controller doesn't honor resets unless we touch the clock register */
#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
/* Controller really supports DMA */
#define SDHCI_QUIRK_FORCE_DMA (1<<1)
/* Controller has unusable DMA engine */
#define SDHCI_QUIRK_BROKEN_DMA (1<<2)
/* Controller doesn't like to be reset when there is no card inserted. */
#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<3)
/* Controller has flaky internal state so reset it on each ios change */
#define SDHCI_QUIRK_RESET_ON_IOS (1<<4)
/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<5)
/* Controller needs to be reset after each request to stay stable */
#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<6)
/* Controller has an off-by-one issue with timeout value */
#define SDHCI_QUIRK_INCR_TIMEOUT_CONTROL (1<<7)
/* Controller has broken read timings */
#define SDHCI_QUIRK_BROKEN_TIMINGS (1<<8)
/* Controller needs lowered frequency */
#define SDHCI_QUIRK_LOWER_FREQUENCY (1<<9)
/* Data timeout is invalid, should use SD clock */
#define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<10)
/* Timeout value is invalid, should be overriden */
#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<11)
/* SDHCI_CAPABILITIES is invalid */
#define SDHCI_QUIRK_MISSING_CAPS (1<<12)
/* Hardware shifts the 136-bit response, don't do it in software. */
#define SDHCI_QUIRK_DONT_SHIFT_RESPONSE (1<<13)
/* Wait to see reset bit asserted before waiting for de-asserted */
#define SDHCI_QUIRK_WAITFOR_RESET_ASSERTED (1<<14)
/* Leave controller in standard mode when putting card in HS mode. */
#define SDHCI_QUIRK_DONT_SET_HISPD_BIT (1<<15)
/* Alternate clock source is required when supplying a 400 KHz clock. */
#define SDHCI_QUIRK_BCM577XX_400KHZ_CLKSRC (1<<16)
/*
* Controller registers
*/
#define SDHCI_DMA_ADDRESS 0x00
#define SDHCI_BLOCK_SIZE 0x04
#define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
#define SDHCI_BLOCK_COUNT 0x06
#define SDHCI_ARGUMENT 0x08
#define SDHCI_TRANSFER_MODE 0x0C
#define SDHCI_TRNS_DMA 0x01
#define SDHCI_TRNS_BLK_CNT_EN 0x02
#define SDHCI_TRNS_ACMD12 0x04
#define SDHCI_TRNS_READ 0x10
#define SDHCI_TRNS_MULTI 0x20
#define SDHCI_COMMAND_FLAGS 0x0E
#define SDHCI_CMD_RESP_NONE 0x00
#define SDHCI_CMD_RESP_LONG 0x01
#define SDHCI_CMD_RESP_SHORT 0x02
#define SDHCI_CMD_RESP_SHORT_BUSY 0x03
#define SDHCI_CMD_RESP_MASK 0x03
#define SDHCI_CMD_CRC 0x08
#define SDHCI_CMD_INDEX 0x10
#define SDHCI_CMD_DATA 0x20
#define SDHCI_CMD_TYPE_NORMAL 0x00
#define SDHCI_CMD_TYPE_SUSPEND 0x40
#define SDHCI_CMD_TYPE_RESUME 0x80
#define SDHCI_CMD_TYPE_ABORT 0xc0
#define SDHCI_CMD_TYPE_MASK 0xc0
#define SDHCI_COMMAND 0x0F
#define SDHCI_RESPONSE 0x10
#define SDHCI_BUFFER 0x20
#define SDHCI_PRESENT_STATE 0x24
#define SDHCI_CMD_INHIBIT 0x00000001
#define SDHCI_DAT_INHIBIT 0x00000002
#define SDHCI_DAT_ACTIVE 0x00000004
#define SDHCI_RETUNE_REQUEST 0x00000008
#define SDHCI_DOING_WRITE 0x00000100
#define SDHCI_DOING_READ 0x00000200
#define SDHCI_SPACE_AVAILABLE 0x00000400
#define SDHCI_DATA_AVAILABLE 0x00000800
#define SDHCI_CARD_PRESENT 0x00010000
#define SDHCI_CARD_STABLE 0x00020000
#define SDHCI_CARD_PIN 0x00040000
#define SDHCI_WRITE_PROTECT 0x00080000
#define SDHCI_STATE_DAT_MASK 0x00f00000
#define SDHCI_STATE_CMD 0x01000000
#define SDHCI_HOST_CONTROL 0x28
#define SDHCI_CTRL_LED 0x01
#define SDHCI_CTRL_4BITBUS 0x02
#define SDHCI_CTRL_HISPD 0x04
#define SDHCI_CTRL_SDMA 0x08
#define SDHCI_CTRL_ADMA2 0x10
#define SDHCI_CTRL_ADMA264 0x18
#define SDHCI_CTRL_DMA_MASK 0x18
#define SDHCI_CTRL_8BITBUS 0x20
#define SDHCI_CTRL_CARD_DET 0x40
#define SDHCI_CTRL_FORCE_CARD 0x80
#define SDHCI_POWER_CONTROL 0x29
#define SDHCI_POWER_ON 0x01
#define SDHCI_POWER_180 0x0A
#define SDHCI_POWER_300 0x0C
#define SDHCI_POWER_330 0x0E
#define SDHCI_BLOCK_GAP_CONTROL 0x2A
#define SDHCI_WAKE_UP_CONTROL 0x2B
#define SDHCI_CLOCK_CONTROL 0x2C
#define SDHCI_DIVIDER_MASK 0xff
#define SDHCI_DIVIDER_MASK_LEN 8
#define SDHCI_DIVIDER_SHIFT 8
#define SDHCI_DIVIDER_HI_MASK 3
#define SDHCI_DIVIDER_HI_SHIFT 6
#define SDHCI_CLOCK_CARD_EN 0x0004
#define SDHCI_CLOCK_INT_STABLE 0x0002
#define SDHCI_CLOCK_INT_EN 0x0001
#define SDHCI_TIMEOUT_CONTROL 0x2E
#define SDHCI_SOFTWARE_RESET 0x2F
#define SDHCI_RESET_ALL 0x01
#define SDHCI_RESET_CMD 0x02
#define SDHCI_RESET_DATA 0x04
#define SDHCI_INT_STATUS 0x30
#define SDHCI_INT_ENABLE 0x34
#define SDHCI_SIGNAL_ENABLE 0x38
#define SDHCI_INT_RESPONSE 0x00000001
#define SDHCI_INT_DATA_END 0x00000002
#define SDHCI_INT_BLOCK_GAP 0x00000004
#define SDHCI_INT_DMA_END 0x00000008
#define SDHCI_INT_SPACE_AVAIL 0x00000010
#define SDHCI_INT_DATA_AVAIL 0x00000020
#define SDHCI_INT_CARD_INSERT 0x00000040
#define SDHCI_INT_CARD_REMOVE 0x00000080
#define SDHCI_INT_CARD_INT 0x00000100
#define SDHCI_INT_INT_A 0x00000200
#define SDHCI_INT_INT_B 0x00000400
#define SDHCI_INT_INT_C 0x00000800
#define SDHCI_INT_RETUNE 0x00001000
#define SDHCI_INT_ERROR 0x00008000
#define SDHCI_INT_TIMEOUT 0x00010000
#define SDHCI_INT_CRC 0x00020000
#define SDHCI_INT_END_BIT 0x00040000
#define SDHCI_INT_INDEX 0x00080000
#define SDHCI_INT_DATA_TIMEOUT 0x00100000
#define SDHCI_INT_DATA_CRC 0x00200000
#define SDHCI_INT_DATA_END_BIT 0x00400000
#define SDHCI_INT_BUS_POWER 0x00800000
#define SDHCI_INT_ACMD12ERR 0x01000000
#define SDHCI_INT_ADMAERR 0x02000000
#define SDHCI_INT_TUNEERR 0x04000000
#define SDHCI_INT_NORMAL_MASK 0x00007FFF
#define SDHCI_INT_ERROR_MASK 0xFFFF8000
#define SDHCI_INT_CMD_ERROR_MASK (SDHCI_INT_TIMEOUT | \
SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_CMD_ERROR_MASK)
#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
SDHCI_INT_DATA_END_BIT)
#define SDHCI_ACMD12_ERR 0x3C
#define SDHCI_HOST_CONTROL2 0x3E
#define SDHCI_CAPABILITIES 0x40
#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
#define SDHCI_TIMEOUT_CLK_SHIFT 0
#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
#define SDHCI_CLOCK_BASE_MASK 0x00003F00
#define SDHCI_CLOCK_V3_BASE_MASK 0x0000FF00
#define SDHCI_CLOCK_BASE_SHIFT 8
#define SDHCI_MAX_BLOCK_MASK 0x00030000
#define SDHCI_MAX_BLOCK_SHIFT 16
#define SDHCI_CAN_DO_8BITBUS 0x00040000
#define SDHCI_CAN_DO_ADMA2 0x00080000
#define SDHCI_CAN_DO_HISPD 0x00200000
#define SDHCI_CAN_DO_DMA 0x00400000
#define SDHCI_CAN_DO_SUSPEND 0x00800000
#define SDHCI_CAN_VDD_330 0x01000000
#define SDHCI_CAN_VDD_300 0x02000000
#define SDHCI_CAN_VDD_180 0x04000000
#define SDHCI_CAN_DO_64BIT 0x10000000
#define SDHCI_CAN_ASYNC_INTR 0x20000000
#define SDHCI_CAPABILITIES2 0x44
#define SDHCI_CAN_SDR50 0x00000001
#define SDHCI_CAN_SDR104 0x00000002
#define SDHCI_CAN_DDR50 0x00000004
#define SDHCI_CAN_DRIVE_TYPE_A 0x00000010
#define SDHCI_CAN_DRIVE_TYPE_B 0x00000020
#define SDHCI_CAN_DRIVE_TYPE_C 0x00000040
#define SDHCI_RETUNE_CNT_MASK 0x00000F00
#define SDHCI_RETUNE_CNT_SHIFT 8
#define SDHCI_TUNE_SDR50 0x00002000
#define SDHCI_RETUNE_MODES_MASK 0x0000C000
#define SDHCI_RETUNE_MODES_SHIFT 14
#define SDHCI_CLOCK_MULT_MASK 0x00FF0000
#define SDHCI_CLOCK_MULT_SHIFT 16
#define SDHCI_MAX_CURRENT 0x48
#define SDHCI_FORCE_AUTO_EVENT 0x50
#define SDHCI_FORCE_INTR_EVENT 0x52
#define SDHCI_ADMA_ERR 0x54
#define SDHCI_ADMA_ADDRESS_LOW 0x58
#define SDHCI_ADMA_ADDRESS_HI 0x5C
#define SDHCI_PRESET_VALUE 0x60
#define SDHCI_SHARED_BUS_CTRL 0xE0
#define SDHCI_SLOT_INT_STATUS 0xFC
#define SDHCI_HOST_VERSION 0xFE
#define SDHCI_VENDOR_VER_MASK 0xFF00
#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
#define SDHCI_SPEC_300 2
SYSCTL_DECL(_hw_sdhci);
struct sdhci_slot {
u_int quirks; /* Chip specific quirks */
u_int caps; /* Override SDHCI_CAPABILITIES */
device_t bus; /* Bus device */
device_t dev; /* Slot device */
u_char num; /* Slot number */
u_char opt; /* Slot options */
#define SDHCI_HAVE_DMA 1
#define SDHCI_PLATFORM_TRANSFER 2
u_char version;
int timeout; /* Transfer timeout */
uint32_t max_clk; /* Max possible freq */
uint32_t timeout_clk; /* Timeout freq */
bus_dma_tag_t dmatag;
bus_dmamap_t dmamap;
u_char *dmamem;
bus_addr_t paddr; /* DMA buffer address */
struct task card_task; /* Card presence check task */
struct callout card_callout; /* Card insert delay callout */
struct callout timeout_callout;/* Card command/data response timeout */
struct mmc_host host; /* Host parameters */
struct mmc_request *req; /* Current request */
struct mmc_command *curcmd; /* Current command of current request */
uint32_t intmask; /* Current interrupt mask */
uint32_t clock; /* Current clock freq. */
size_t offset; /* Data buffer offset */
uint8_t hostctrl; /* Current host control register */
u_char power; /* Current power */
u_char bus_busy; /* Bus busy status */
u_char cmd_done; /* CMD command part done flag */
u_char data_done; /* DAT command part done flag */
u_char flags; /* Request execution flags */
#define CMD_STARTED 1
#define STOP_STARTED 2
#define SDHCI_USE_DMA 4 /* Use DMA for this req. */
#define PLATFORM_DATA_STARTED 8 /* Data transfer is handled by platform */
struct mtx mtx; /* Slot mutex */
};
int sdhci_generic_read_ivar(device_t bus, device_t child, int which, uintptr_t *result);
int sdhci_generic_write_ivar(device_t bus, device_t child, int which, uintptr_t value);
int sdhci_init_slot(device_t dev, struct sdhci_slot *slot, int num);
void sdhci_start_slot(struct sdhci_slot *slot);
/* performs generic clean-up for platform transfers */
void sdhci_finish_data(struct sdhci_slot *slot);
int sdhci_cleanup_slot(struct sdhci_slot *slot);
int sdhci_generic_suspend(struct sdhci_slot *slot);
int sdhci_generic_resume(struct sdhci_slot *slot);
int sdhci_generic_update_ios(device_t brdev, device_t reqdev);
int sdhci_generic_request(device_t brdev, device_t reqdev, struct mmc_request *req);
int sdhci_generic_get_ro(device_t brdev, device_t reqdev);
int sdhci_generic_acquire_host(device_t brdev, device_t reqdev);
int sdhci_generic_release_host(device_t brdev, device_t reqdev);
void sdhci_generic_intr(struct sdhci_slot *slot);
uint32_t sdhci_generic_min_freq(device_t brdev, struct sdhci_slot *slot);
#endif /* __SDHCI_H__ */
Reference in New Issue View Git Blame Copy Permalink