mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 15:14:43 +00:00
40e6f52454
Adds an implementation of the wait_dat0 MMC operation for the DM SDHCI driver, allowing the driver to continue when the card is ready rather than waiting for the worst case time on each MMC switch operation. Signed-off-by: Stephen Carlson <stcarlso@linux.microsoft.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
514 lines
14 KiB
C
514 lines
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2011, Marvell Semiconductor Inc.
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* Lei Wen <leiwen@marvell.com>
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*
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* Back ported to the 8xx platform (from the 8260 platform) by
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* Murray.Jensen@cmst.csiro.au, 27-Jan-01.
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*/
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#ifndef __SDHCI_HW_H
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#define __SDHCI_HW_H
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#include <linux/bitops.h>
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#include <linux/types.h>
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#include <asm/io.h>
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#include <mmc.h>
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#include <asm/gpio.h>
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/*
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* Controller registers
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*/
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#define SDHCI_DMA_ADDRESS 0x00
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#define SDHCI_BLOCK_SIZE 0x04
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#define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
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#define SDHCI_BLOCK_COUNT 0x06
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#define SDHCI_ARGUMENT 0x08
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#define SDHCI_TRANSFER_MODE 0x0C
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#define SDHCI_TRNS_DMA BIT(0)
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#define SDHCI_TRNS_BLK_CNT_EN BIT(1)
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#define SDHCI_TRNS_ACMD12 BIT(2)
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#define SDHCI_TRNS_READ BIT(4)
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#define SDHCI_TRNS_MULTI BIT(5)
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#define SDHCI_COMMAND 0x0E
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#define SDHCI_CMD_RESP_MASK 0x03
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#define SDHCI_CMD_CRC 0x08
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#define SDHCI_CMD_INDEX 0x10
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#define SDHCI_CMD_DATA 0x20
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#define SDHCI_CMD_ABORTCMD 0xC0
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#define SDHCI_CMD_RESP_NONE 0x00
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#define SDHCI_CMD_RESP_LONG 0x01
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#define SDHCI_CMD_RESP_SHORT 0x02
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#define SDHCI_CMD_RESP_SHORT_BUSY 0x03
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#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
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#define SDHCI_GET_CMD(c) ((c>>8) & 0x3f)
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#define SDHCI_RESPONSE 0x10
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#define SDHCI_BUFFER 0x20
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#define SDHCI_PRESENT_STATE 0x24
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#define SDHCI_CMD_INHIBIT BIT(0)
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#define SDHCI_DATA_INHIBIT BIT(1)
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#define SDHCI_DOING_WRITE BIT(8)
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#define SDHCI_DOING_READ BIT(9)
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#define SDHCI_SPACE_AVAILABLE BIT(10)
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#define SDHCI_DATA_AVAILABLE BIT(11)
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#define SDHCI_CARD_PRESENT BIT(16)
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#define SDHCI_CARD_STATE_STABLE BIT(17)
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#define SDHCI_CARD_DETECT_PIN_LEVEL BIT(18)
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#define SDHCI_WRITE_PROTECT BIT(19)
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#define SDHCI_DATA_LVL_MASK 0x00F00000
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#define SDHCI_DATA_0_LVL_MASK BIT(20)
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#define SDHCI_HOST_CONTROL 0x28
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#define SDHCI_CTRL_LED BIT(0)
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#define SDHCI_CTRL_4BITBUS BIT(1)
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#define SDHCI_CTRL_HISPD BIT(2)
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#define SDHCI_CTRL_DMA_MASK 0x18
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#define SDHCI_CTRL_SDMA 0x00
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#define SDHCI_CTRL_ADMA1 0x08
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#define SDHCI_CTRL_ADMA32 0x10
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#define SDHCI_CTRL_ADMA64 0x18
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#define SDHCI_CTRL_8BITBUS BIT(5)
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#define SDHCI_CTRL_CD_TEST_INS BIT(6)
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#define SDHCI_CTRL_CD_TEST BIT(7)
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#define SDHCI_POWER_CONTROL 0x29
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#define SDHCI_POWER_ON 0x01
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#define SDHCI_POWER_180 0x0A
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#define SDHCI_POWER_300 0x0C
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#define SDHCI_POWER_330 0x0E
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#define SDHCI_BLOCK_GAP_CONTROL 0x2A
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#define SDHCI_WAKE_UP_CONTROL 0x2B
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#define SDHCI_WAKE_ON_INT BIT(0)
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#define SDHCI_WAKE_ON_INSERT BIT(1)
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#define SDHCI_WAKE_ON_REMOVE BIT(2)
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#define SDHCI_CLOCK_CONTROL 0x2C
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#define SDHCI_DIVIDER_SHIFT 8
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#define SDHCI_DIVIDER_HI_SHIFT 6
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#define SDHCI_DIV_MASK 0xFF
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#define SDHCI_DIV_MASK_LEN 8
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#define SDHCI_DIV_HI_MASK 0x300
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#define SDHCI_PROG_CLOCK_MODE BIT(5)
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#define SDHCI_CLOCK_CARD_EN BIT(2)
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#define SDHCI_CLOCK_INT_STABLE BIT(1)
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#define SDHCI_CLOCK_INT_EN BIT(0)
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#define SDHCI_TIMEOUT_CONTROL 0x2E
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#define SDHCI_SOFTWARE_RESET 0x2F
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#define SDHCI_RESET_ALL 0x01
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#define SDHCI_RESET_CMD 0x02
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#define SDHCI_RESET_DATA 0x04
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#define SDHCI_INT_STATUS 0x30
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#define SDHCI_INT_ENABLE 0x34
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#define SDHCI_SIGNAL_ENABLE 0x38
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#define SDHCI_INT_RESPONSE BIT(0)
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#define SDHCI_INT_DATA_END BIT(1)
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#define SDHCI_INT_DMA_END BIT(3)
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#define SDHCI_INT_SPACE_AVAIL BIT(4)
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#define SDHCI_INT_DATA_AVAIL BIT(5)
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#define SDHCI_INT_CARD_INSERT BIT(6)
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#define SDHCI_INT_CARD_REMOVE BIT(7)
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#define SDHCI_INT_CARD_INT BIT(8)
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#define SDHCI_INT_ERROR BIT(15)
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#define SDHCI_INT_TIMEOUT BIT(16)
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#define SDHCI_INT_CRC BIT(17)
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#define SDHCI_INT_END_BIT BIT(18)
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#define SDHCI_INT_INDEX BIT(19)
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#define SDHCI_INT_DATA_TIMEOUT BIT(20)
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#define SDHCI_INT_DATA_CRC BIT(21)
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#define SDHCI_INT_DATA_END_BIT BIT(22)
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#define SDHCI_INT_BUS_POWER BIT(23)
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#define SDHCI_INT_ACMD12ERR BIT(24)
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#define SDHCI_INT_ADMA_ERROR BIT(25)
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#define SDHCI_INT_NORMAL_MASK 0x00007FFF
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#define SDHCI_INT_ERROR_MASK 0xFFFF8000
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#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
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SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
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#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
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SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
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SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
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SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR)
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#define SDHCI_INT_ALL_MASK ((unsigned int)-1)
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#define SDHCI_ACMD12_ERR 0x3C
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#define SDHCI_HOST_CONTROL2 0x3E
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#define SDHCI_CTRL_UHS_MASK 0x0007
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#define SDHCI_CTRL_UHS_SDR12 0x0000
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#define SDHCI_CTRL_UHS_SDR25 0x0001
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#define SDHCI_CTRL_UHS_SDR50 0x0002
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#define SDHCI_CTRL_UHS_SDR104 0x0003
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#define SDHCI_CTRL_UHS_DDR50 0x0004
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#define SDHCI_CTRL_HS400 0x0005 /* Non-standard */
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#define SDHCI_CTRL_VDD_180 0x0008
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#define SDHCI_CTRL_DRV_TYPE_MASK 0x0030
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#define SDHCI_CTRL_DRV_TYPE_B 0x0000
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#define SDHCI_CTRL_DRV_TYPE_A 0x0010
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#define SDHCI_CTRL_DRV_TYPE_C 0x0020
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#define SDHCI_CTRL_DRV_TYPE_D 0x0030
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#define SDHCI_CTRL_EXEC_TUNING 0x0040
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#define SDHCI_CTRL_TUNED_CLK 0x0080
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#define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000
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#define SDHCI_CAPABILITIES 0x40
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#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
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#define SDHCI_TIMEOUT_CLK_SHIFT 0
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#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
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#define SDHCI_CLOCK_BASE_MASK 0x00003F00
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#define SDHCI_CLOCK_V3_BASE_MASK 0x0000FF00
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#define SDHCI_CLOCK_BASE_SHIFT 8
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#define SDHCI_MAX_BLOCK_MASK 0x00030000
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#define SDHCI_MAX_BLOCK_SHIFT 16
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#define SDHCI_CAN_DO_8BIT BIT(18)
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#define SDHCI_CAN_DO_ADMA2 BIT(19)
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#define SDHCI_CAN_DO_ADMA1 BIT(20)
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#define SDHCI_CAN_DO_HISPD BIT(21)
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#define SDHCI_CAN_DO_SDMA BIT(22)
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#define SDHCI_CAN_VDD_330 BIT(24)
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#define SDHCI_CAN_VDD_300 BIT(25)
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#define SDHCI_CAN_VDD_180 BIT(26)
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#define SDHCI_CAN_64BIT BIT(28)
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#define SDHCI_CAPABILITIES_1 0x44
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#define SDHCI_SUPPORT_SDR50 0x00000001
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#define SDHCI_SUPPORT_SDR104 0x00000002
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#define SDHCI_SUPPORT_DDR50 0x00000004
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#define SDHCI_USE_SDR50_TUNING 0x00002000
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#define SDHCI_CLOCK_MUL_MASK 0x00FF0000
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#define SDHCI_CLOCK_MUL_SHIFT 16
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#define SDHCI_MAX_CURRENT 0x48
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/* 4C-4F reserved for more max current */
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#define SDHCI_SET_ACMD12_ERROR 0x50
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#define SDHCI_SET_INT_ERROR 0x52
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#define SDHCI_ADMA_ERROR 0x54
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/* 55-57 reserved */
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#define SDHCI_ADMA_ADDRESS 0x58
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#define SDHCI_ADMA_ADDRESS_HI 0x5c
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/* 60-FB reserved */
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#define SDHCI_SLOT_INT_STATUS 0xFC
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#define SDHCI_HOST_VERSION 0xFE
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#define SDHCI_VENDOR_VER_MASK 0xFF00
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#define SDHCI_VENDOR_VER_SHIFT 8
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#define SDHCI_SPEC_VER_MASK 0x00FF
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#define SDHCI_SPEC_VER_SHIFT 0
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#define SDHCI_SPEC_100 0
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#define SDHCI_SPEC_200 1
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#define SDHCI_SPEC_300 2
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#define SDHCI_GET_VERSION(x) (x->version & SDHCI_SPEC_VER_MASK)
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/*
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* End of controller registers.
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*/
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#define SDHCI_MAX_DIV_SPEC_200 256
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#define SDHCI_MAX_DIV_SPEC_300 2046
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/*
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* quirks
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*/
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#define SDHCI_QUIRK_32BIT_DMA_ADDR (1 << 0)
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#define SDHCI_QUIRK_REG32_RW (1 << 1)
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#define SDHCI_QUIRK_BROKEN_R1B (1 << 2)
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#define SDHCI_QUIRK_NO_HISPD_BIT (1 << 3)
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#define SDHCI_QUIRK_BROKEN_VOLTAGE (1 << 4)
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/*
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* SDHCI_QUIRK_BROKEN_HISPD_MODE
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* the hardware cannot operate correctly in high-speed mode,
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* this quirk forces the sdhci host-controller to non high-speed mode
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*/
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#define SDHCI_QUIRK_BROKEN_HISPD_MODE BIT(5)
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#define SDHCI_QUIRK_WAIT_SEND_CMD (1 << 6)
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#define SDHCI_QUIRK_USE_WIDE8 (1 << 8)
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#define SDHCI_QUIRK_NO_1_8_V (1 << 9)
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/* to make gcc happy */
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struct sdhci_host;
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/*
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* Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
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*/
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#define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
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#define SDHCI_DEFAULT_BOUNDARY_ARG (7)
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struct sdhci_ops {
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#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
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u32 (*read_l)(struct sdhci_host *host, int reg);
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u16 (*read_w)(struct sdhci_host *host, int reg);
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u8 (*read_b)(struct sdhci_host *host, int reg);
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void (*write_l)(struct sdhci_host *host, u32 val, int reg);
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void (*write_w)(struct sdhci_host *host, u16 val, int reg);
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void (*write_b)(struct sdhci_host *host, u8 val, int reg);
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#endif
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int (*get_cd)(struct sdhci_host *host);
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void (*set_control_reg)(struct sdhci_host *host);
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int (*set_ios_post)(struct sdhci_host *host);
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void (*set_clock)(struct sdhci_host *host, u32 div);
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int (*platform_execute_tuning)(struct mmc *host, u8 opcode);
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int (*set_delay)(struct sdhci_host *host);
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int (*deferred_probe)(struct sdhci_host *host);
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};
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#define ADMA_MAX_LEN 65532
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#ifdef CONFIG_DMA_ADDR_T_64BIT
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#define ADMA_DESC_LEN 16
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#else
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#define ADMA_DESC_LEN 8
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#endif
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#define ADMA_TABLE_NO_ENTRIES (CONFIG_SYS_MMC_MAX_BLK_COUNT * \
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MMC_MAX_BLOCK_LEN) / ADMA_MAX_LEN
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#define ADMA_TABLE_SZ (ADMA_TABLE_NO_ENTRIES * ADMA_DESC_LEN)
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/* Decriptor table defines */
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#define ADMA_DESC_ATTR_VALID BIT(0)
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#define ADMA_DESC_ATTR_END BIT(1)
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#define ADMA_DESC_ATTR_INT BIT(2)
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#define ADMA_DESC_ATTR_ACT1 BIT(4)
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#define ADMA_DESC_ATTR_ACT2 BIT(5)
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#define ADMA_DESC_TRANSFER_DATA ADMA_DESC_ATTR_ACT2
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#define ADMA_DESC_LINK_DESC (ADMA_DESC_ATTR_ACT1 | ADMA_DESC_ATTR_ACT2)
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struct sdhci_adma_desc {
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u8 attr;
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u8 reserved;
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u16 len;
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u32 addr_lo;
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#ifdef CONFIG_DMA_ADDR_T_64BIT
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u32 addr_hi;
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#endif
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} __packed;
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struct sdhci_host {
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const char *name;
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void *ioaddr;
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unsigned int quirks;
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unsigned int host_caps;
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unsigned int version;
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unsigned int max_clk; /* Maximum Base Clock frequency */
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unsigned int clk_mul; /* Clock Multiplier value */
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unsigned int clock;
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struct mmc *mmc;
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const struct sdhci_ops *ops;
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int index;
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int bus_width;
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struct gpio_desc pwr_gpio; /* Power GPIO */
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struct gpio_desc cd_gpio; /* Card Detect GPIO */
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uint voltages;
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struct mmc_config cfg;
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void *align_buffer;
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bool force_align_buffer;
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dma_addr_t start_addr;
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int flags;
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#define USE_SDMA (0x1 << 0)
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#define USE_ADMA (0x1 << 1)
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#define USE_ADMA64 (0x1 << 2)
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#define USE_DMA (USE_SDMA | USE_ADMA | USE_ADMA64)
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dma_addr_t adma_addr;
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#if CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)
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struct sdhci_adma_desc *adma_desc_table;
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#endif
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};
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#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
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static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
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{
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if (unlikely(host->ops->write_l))
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host->ops->write_l(host, val, reg);
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else
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writel(val, host->ioaddr + reg);
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}
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static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
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{
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if (unlikely(host->ops->write_w))
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host->ops->write_w(host, val, reg);
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else
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writew(val, host->ioaddr + reg);
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}
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static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
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{
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if (unlikely(host->ops->write_b))
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host->ops->write_b(host, val, reg);
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else
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writeb(val, host->ioaddr + reg);
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}
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static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
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{
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if (unlikely(host->ops->read_l))
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return host->ops->read_l(host, reg);
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else
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return readl(host->ioaddr + reg);
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}
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static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
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{
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if (unlikely(host->ops->read_w))
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return host->ops->read_w(host, reg);
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else
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return readw(host->ioaddr + reg);
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}
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static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
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{
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if (unlikely(host->ops->read_b))
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return host->ops->read_b(host, reg);
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else
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return readb(host->ioaddr + reg);
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}
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#else
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static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
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{
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writel(val, host->ioaddr + reg);
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}
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static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
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{
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writew(val, host->ioaddr + reg);
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}
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static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
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{
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writeb(val, host->ioaddr + reg);
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}
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static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
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{
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return readl(host->ioaddr + reg);
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}
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static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
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{
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return readw(host->ioaddr + reg);
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}
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static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
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{
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return readb(host->ioaddr + reg);
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}
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#endif
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#ifdef CONFIG_BLK
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/**
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* sdhci_setup_cfg() - Set up the configuration for DWMMC
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*
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* This is used to set up an SDHCI device when you are using CONFIG_BLK.
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*
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* This should be called from your MMC driver's probe() method once you have
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* the information required.
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*
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* Generally your driver will have a platform data structure which holds both
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* the configuration (struct mmc_config) and the MMC device info (struct mmc).
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* For example:
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*
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* struct msm_sdhc_plat {
|
|
* struct mmc_config cfg;
|
|
* struct mmc mmc;
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|
* };
|
|
*
|
|
* ...
|
|
*
|
|
* Inside U_BOOT_DRIVER():
|
|
* .plat_auto = sizeof(struct msm_sdhc_plat),
|
|
*
|
|
* To access platform data:
|
|
* struct msm_sdhc_plat *plat = dev_get_plat(dev);
|
|
*
|
|
* See msm_sdhci.c for an example.
|
|
*
|
|
* @cfg: Configuration structure to fill in (generally &plat->mmc)
|
|
* @host: SDHCI host structure
|
|
* @f_max: Maximum supported clock frequency in HZ (0 for default)
|
|
* @f_min: Minimum supported clock frequency in HZ (0 for default)
|
|
*/
|
|
int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host,
|
|
u32 f_max, u32 f_min);
|
|
|
|
/**
|
|
* sdhci_bind() - Set up a new MMC block device
|
|
*
|
|
* This is used to set up an SDHCI block device when you are using CONFIG_BLK.
|
|
* It should be called from your driver's bind() method.
|
|
*
|
|
* See msm_sdhci.c for an example.
|
|
*
|
|
* @dev: Device to set up
|
|
* @mmc: Pointer to mmc structure (normally &plat->mmc)
|
|
* @cfg: Empty configuration structure (generally &plat->cfg). This is
|
|
* normally all zeroes at this point. The only purpose of passing
|
|
* this in is to set mmc->cfg to it.
|
|
* @return 0 if OK, -ve if the block device could not be created
|
|
*/
|
|
int sdhci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg);
|
|
#else
|
|
|
|
/**
|
|
* add_sdhci() - Add a new SDHCI interface
|
|
*
|
|
* This is used when you are not using CONFIG_BLK. Convert your driver over!
|
|
*
|
|
* @host: SDHCI host structure
|
|
* @f_max: Maximum supported clock frequency in HZ (0 for default)
|
|
* @f_min: Minimum supported clock frequency in HZ (0 for default)
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int add_sdhci(struct sdhci_host *host, u32 f_max, u32 f_min);
|
|
#endif /* !CONFIG_BLK */
|
|
|
|
void sdhci_set_uhs_timing(struct sdhci_host *host);
|
|
#ifdef CONFIG_DM_MMC
|
|
/* Export the operations to drivers */
|
|
int sdhci_probe(struct udevice *dev);
|
|
int sdhci_set_clock(struct mmc *mmc, unsigned int clock);
|
|
|
|
/**
|
|
* sdhci_set_control_reg - Set control registers
|
|
*
|
|
* This is used set up control registers for voltage level and UHS speed
|
|
* mode.
|
|
*
|
|
* @host: SDHCI host structure
|
|
*/
|
|
void sdhci_set_control_reg(struct sdhci_host *host);
|
|
extern const struct dm_mmc_ops sdhci_ops;
|
|
#else
|
|
#endif
|
|
|
|
struct sdhci_adma_desc *sdhci_adma_init(void);
|
|
void sdhci_prepare_adma_table(struct sdhci_adma_desc *table,
|
|
struct mmc_data *data, dma_addr_t addr);
|
|
|
|
#endif /* __SDHCI_HW_H */
|