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124 lines
3.3 KiB
124 lines
3.3 KiB
/*
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* Copyright (c) 2019, Linaro Limited
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* Copyright (c) 2019, Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef RPI3_SDHOST_H
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#define RPI3_SDHOST_H
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#include <drivers/mmc.h>
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#include <stdint.h>
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#include <platform_def.h>
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struct rpi3_sdhost_params {
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uintptr_t reg_base;
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uint32_t clk_rate;
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uint32_t bus_width;
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uint32_t flags;
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uint32_t current_cmd;
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uint8_t cmdbusy;
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uint8_t mmc_app_cmd;
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uint32_t ns_per_fifo_word;
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uint32_t sdcard_rca;
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uint32_t gpio48_pinselect[6];
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};
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void rpi3_sdhost_init(struct rpi3_sdhost_params *params,
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struct mmc_device_info *mmc_dev_info);
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void rpi3_sdhost_stop(void);
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/* Registers */
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#define HC_COMMAND 0x00 /* Command and flags */
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#define HC_ARGUMENT 0x04
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#define HC_TIMEOUTCOUNTER 0x08
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#define HC_CLOCKDIVISOR 0x0c
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#define HC_RESPONSE_0 0x10
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#define HC_RESPONSE_1 0x14
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#define HC_RESPONSE_2 0x18
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#define HC_RESPONSE_3 0x1c
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#define HC_HOSTSTATUS 0x20
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#define HC_POWER 0x30
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#define HC_DEBUG 0x34
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#define HC_HOSTCONFIG 0x38
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#define HC_BLOCKSIZE 0x3c
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#define HC_DATAPORT 0x40
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#define HC_BLOCKCOUNT 0x50
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/* Flags for HC_COMMAND register */
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#define HC_CMD_ENABLE 0x8000
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#define HC_CMD_FAILED 0x4000
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#define HC_CMD_BUSY 0x0800
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#define HC_CMD_RESPONSE_NONE 0x0400
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#define HC_CMD_RESPONSE_LONG 0x0200
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#define HC_CMD_WRITE 0x0080
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#define HC_CMD_READ 0x0040
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#define HC_CMD_COMMAND_MASK 0x003f
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#define HC_CLOCKDIVISOR_MAXVAL 0x07ff
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#define HC_CLOCKDIVISOR_PREFERVAL 0x027b
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#define HC_CLOCKDIVISOR_SLOWVAL 0x0148
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#define HC_CLOCKDIVISOR_STOPVAL 0x01fb
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/* Flags for HC_HOSTSTATUS register */
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#define HC_HSTST_HAVEDATA 0x0001
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#define HC_HSTST_ERROR_FIFO 0x0008
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#define HC_HSTST_ERROR_CRC7 0x0010
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#define HC_HSTST_ERROR_CRC16 0x0020
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#define HC_HSTST_TIMEOUT_CMD 0x0040
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#define HC_HSTST_TIMEOUT_DATA 0x0080
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#define HC_HSTST_INT_BLOCK 0x0200
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#define HC_HSTST_INT_BUSY 0x0400
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#define HC_HSTST_RESET 0xffff
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#define HC_HSTST_MASK_ERROR_DATA (HC_HSTST_ERROR_FIFO | \
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HC_HSTST_ERROR_CRC7 | \
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HC_HSTST_ERROR_CRC16 | \
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HC_HSTST_TIMEOUT_DATA)
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#define HC_HSTST_MASK_ERROR_ALL (HC_HSTST_MASK_ERROR_DATA | \
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HC_HSTST_TIMEOUT_CMD)
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/* Flags for HC_HOSTCONFIG register */
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#define HC_HSTCF_INTBUS_WIDE 0x0002
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#define HC_HSTCF_EXTBUS_4BIT 0x0004
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#define HC_HSTCF_SLOW_CARD 0x0008
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#define HC_HSTCF_INT_DATA 0x0010
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#define HC_HSTCF_INT_BLOCK 0x0100
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#define HC_HSTCF_INT_BUSY 0x0400
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/* Flags for HC_DEBUG register */
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#define HC_DBG_FIFO_THRESH_WRITE_SHIFT 9
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#define HC_DBG_FIFO_THRESH_READ_SHIFT 14
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#define HC_DBG_FIFO_THRESH_MASK 0x001f
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#define HC_DBG_FSM_MASK 0xf
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#define HC_DBG_FSM_IDENTMODE 0x0
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#define HC_DBG_FSM_DATAMODE 0x1
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#define HC_DBG_FSM_READDATA 0x2
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#define HC_DBG_FSM_WRITEDATA 0x3
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#define HC_DBG_FSM_READWAIT 0x4
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#define HC_DBG_FSM_READCRC 0x5
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#define HC_DBG_FSM_WRITECRC 0x6
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#define HC_DBG_FSM_WRITEWAIT1 0x7
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#define HC_DBG_FSM_POWERDOWN 0x8
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#define HC_DBG_FSM_POWERUP 0x9
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#define HC_DBG_FSM_WRITESTART1 0xa
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#define HC_DBG_FSM_WRITESTART2 0xb
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#define HC_DBG_FSM_GENPULSES 0xc
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#define HC_DBG_FSM_WRITEWAIT2 0xd
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#define HC_DBG_FSM_STARTPOWDOWN 0xf
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#define HC_DBG_FORCE_DATA_MODE 0x40000
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/* Settings */
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#define HC_FIFO_SIZE 16
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#define HC_FIFO_THRESH_READ 4
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#define HC_FIFO_THRESH_WRITE 4
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#define HC_TIMEOUT_DEFAULT 0x00f00000
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#define HC_TIMEOUT_IDLE 0x00a00000
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#endif /* RPI3_SDHOST_H */
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