288 lines
8.8 KiB
C
288 lines
8.8 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2018 Oleksij Rempel <linux@rempel-privat.de>
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*
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* Driver for Alcor Micro AU6601 and AU6621 controllers
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*/
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#ifndef __ALCOR_PCI_H
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#define __ALCOR_PCI_H
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#define ALCOR_SD_CARD 0
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#define ALCOR_MS_CARD 1
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#define DRV_NAME_ALCOR_PCI_SDMMC "alcor_sdmmc"
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#define DRV_NAME_ALCOR_PCI_MS "alcor_ms"
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#define PCI_ID_ALCOR_MICRO 0x1AEA
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#define PCI_ID_AU6601 0x6601
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#define PCI_ID_AU6621 0x6621
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#define PCI_ID_AU6625 0x6625
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#define MHZ_TO_HZ(freq) ((freq) * 1000 * 1000)
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#define AU6601_BASE_CLOCK 31000000
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#define AU6601_MIN_CLOCK 150000
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#define AU6601_MAX_CLOCK 208000000
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#define AU6601_MAX_DMA_SEGMENTS 64
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#define AU6601_MAX_PIO_SEGMENTS 1
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#define AU6601_MAX_DMA_BLOCK_SIZE 0x1000
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#define AU6601_MAX_PIO_BLOCK_SIZE 0x200
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#define AU6601_MAX_DMA_BLOCKS 1
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#define AU6601_DMA_LOCAL_SEGMENTS 1
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/* registers spotter by reverse engineering but still
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* with unknown functionality:
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* 0x10 - ADMA phy address. AU6621 only?
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* 0x51 - LED ctrl?
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* 0x52 - unknown
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* 0x61 - LED related? Always toggled BIT0
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* 0x63 - Same as 0x61?
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* 0x77 - unknown
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*/
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/* SDMA phy address. Higher then 0x0800.0000?
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* The au6601 and au6621 have different DMA engines with different issues. One
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* For example au6621 engine is triggered by addr change. No other interaction
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* is needed. This means, if we get two buffers with same address, then engine
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* will stall.
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*/
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#define AU6601_REG_SDMA_ADDR 0x00
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#define AU6601_SDMA_MASK 0xffffffff
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#define AU6601_DMA_BOUNDARY 0x05
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#define AU6621_DMA_PAGE_CNT 0x05
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/* PIO */
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#define AU6601_REG_BUFFER 0x08
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/* ADMA ctrl? AU6621 only. */
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#define AU6621_DMA_CTRL 0x0c
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#define AU6621_DMA_ENABLE BIT(0)
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/* CMD index */
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#define AU6601_REG_CMD_OPCODE 0x23
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/* CMD parametr */
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#define AU6601_REG_CMD_ARG 0x24
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/* CMD response 4x4 Bytes */
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#define AU6601_REG_CMD_RSP0 0x30
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#define AU6601_REG_CMD_RSP1 0x34
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#define AU6601_REG_CMD_RSP2 0x38
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#define AU6601_REG_CMD_RSP3 0x3C
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/* default timeout set to 125: 125 * 40ms = 5 sec
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* how exactly it is calculated?
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*/
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#define AU6601_TIME_OUT_CTRL 0x69
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/* Block size for SDMA or PIO */
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#define AU6601_REG_BLOCK_SIZE 0x6c
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/* Some power related reg, used together with AU6601_OUTPUT_ENABLE */
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#define AU6601_POWER_CONTROL 0x70
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/* PLL ctrl */
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#define AU6601_CLK_SELECT 0x72
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#define AU6601_CLK_OVER_CLK 0x80
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#define AU6601_CLK_384_MHZ 0x30
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#define AU6601_CLK_125_MHZ 0x20
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#define AU6601_CLK_48_MHZ 0x10
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#define AU6601_CLK_EXT_PLL 0x04
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#define AU6601_CLK_X2_MODE 0x02
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#define AU6601_CLK_ENABLE 0x01
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#define AU6601_CLK_31_25_MHZ 0x00
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#define AU6601_CLK_DIVIDER 0x73
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#define AU6601_INTERFACE_MODE_CTRL 0x74
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#define AU6601_DLINK_MODE 0x80
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#define AU6601_INTERRUPT_DELAY_TIME 0x40
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#define AU6601_SIGNAL_REQ_CTRL 0x30
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#define AU6601_MS_CARD_WP BIT(3)
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#define AU6601_SD_CARD_WP BIT(0)
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/* same register values are used for:
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* - AU6601_OUTPUT_ENABLE
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* - AU6601_POWER_CONTROL
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*/
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#define AU6601_ACTIVE_CTRL 0x75
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#define AU6601_XD_CARD BIT(4)
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/* AU6601_MS_CARD_ACTIVE - will cativate MS card section? */
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#define AU6601_MS_CARD BIT(3)
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#define AU6601_SD_CARD BIT(0)
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/* card slot state. It should automatically detect type of
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* the card
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*/
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#define AU6601_DETECT_STATUS 0x76
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#define AU6601_DETECT_EN BIT(7)
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#define AU6601_MS_DETECTED BIT(3)
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#define AU6601_SD_DETECTED BIT(0)
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#define AU6601_DETECT_STATUS_M 0xf
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#define AU6601_REG_SW_RESET 0x79
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#define AU6601_BUF_CTRL_RESET BIT(7)
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#define AU6601_RESET_DATA BIT(3)
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#define AU6601_RESET_CMD BIT(0)
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#define AU6601_OUTPUT_ENABLE 0x7a
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#define AU6601_PAD_DRIVE0 0x7b
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#define AU6601_PAD_DRIVE1 0x7c
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#define AU6601_PAD_DRIVE2 0x7d
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/* read EEPROM? */
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#define AU6601_FUNCTION 0x7f
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#define AU6601_CMD_XFER_CTRL 0x81
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#define AU6601_CMD_17_BYTE_CRC 0xc0
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#define AU6601_CMD_6_BYTE_WO_CRC 0x80
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#define AU6601_CMD_6_BYTE_CRC 0x40
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#define AU6601_CMD_START_XFER 0x20
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#define AU6601_CMD_STOP_WAIT_RDY 0x10
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#define AU6601_CMD_NO_RESP 0x00
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#define AU6601_REG_BUS_CTRL 0x82
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#define AU6601_BUS_WIDTH_4BIT 0x20
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#define AU6601_BUS_WIDTH_8BIT 0x10
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#define AU6601_BUS_WIDTH_1BIT 0x00
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#define AU6601_DATA_XFER_CTRL 0x83
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#define AU6601_DATA_WRITE BIT(7)
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#define AU6601_DATA_DMA_MODE BIT(6)
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#define AU6601_DATA_START_XFER BIT(0)
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#define AU6601_DATA_PIN_STATE 0x84
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#define AU6601_BUS_STAT_CMD BIT(15)
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/* BIT(4) - BIT(7) are permanently 1.
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* May be reserved or not attached DAT4-DAT7
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*/
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#define AU6601_BUS_STAT_DAT3 BIT(3)
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#define AU6601_BUS_STAT_DAT2 BIT(2)
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#define AU6601_BUS_STAT_DAT1 BIT(1)
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#define AU6601_BUS_STAT_DAT0 BIT(0)
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#define AU6601_BUS_STAT_DAT_MASK 0xf
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#define AU6601_OPT 0x85
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#define AU6601_OPT_CMD_LINE_LEVEL 0x80
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#define AU6601_OPT_NCRC_16_CLK BIT(4)
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#define AU6601_OPT_CMD_NWT BIT(3)
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#define AU6601_OPT_STOP_CLK BIT(2)
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#define AU6601_OPT_DDR_MODE BIT(1)
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#define AU6601_OPT_SD_18V BIT(0)
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#define AU6601_CLK_DELAY 0x86
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#define AU6601_CLK_DATA_POSITIVE_EDGE 0x80
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#define AU6601_CLK_CMD_POSITIVE_EDGE 0x40
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#define AU6601_CLK_POSITIVE_EDGE_ALL (AU6601_CLK_CMD_POSITIVE_EDGE \
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| AU6601_CLK_DATA_POSITIVE_EDGE)
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#define AU6601_REG_INT_STATUS 0x90
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#define AU6601_REG_INT_ENABLE 0x94
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#define AU6601_INT_DATA_END_BIT_ERR BIT(22)
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#define AU6601_INT_DATA_CRC_ERR BIT(21)
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#define AU6601_INT_DATA_TIMEOUT_ERR BIT(20)
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#define AU6601_INT_CMD_INDEX_ERR BIT(19)
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#define AU6601_INT_CMD_END_BIT_ERR BIT(18)
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#define AU6601_INT_CMD_CRC_ERR BIT(17)
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#define AU6601_INT_CMD_TIMEOUT_ERR BIT(16)
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#define AU6601_INT_ERROR BIT(15)
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#define AU6601_INT_OVER_CURRENT_ERR BIT(8)
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#define AU6601_INT_CARD_INSERT BIT(7)
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#define AU6601_INT_CARD_REMOVE BIT(6)
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#define AU6601_INT_READ_BUF_RDY BIT(5)
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#define AU6601_INT_WRITE_BUF_RDY BIT(4)
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#define AU6601_INT_DMA_END BIT(3)
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#define AU6601_INT_DATA_END BIT(1)
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#define AU6601_INT_CMD_END BIT(0)
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#define AU6601_INT_NORMAL_MASK 0x00007FFF
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#define AU6601_INT_ERROR_MASK 0xFFFF8000
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#define AU6601_INT_CMD_MASK (AU6601_INT_CMD_END | \
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AU6601_INT_CMD_TIMEOUT_ERR | AU6601_INT_CMD_CRC_ERR | \
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AU6601_INT_CMD_END_BIT_ERR | AU6601_INT_CMD_INDEX_ERR)
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#define AU6601_INT_DATA_MASK (AU6601_INT_DATA_END | AU6601_INT_DMA_END | \
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AU6601_INT_READ_BUF_RDY | AU6601_INT_WRITE_BUF_RDY | \
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AU6601_INT_DATA_TIMEOUT_ERR | AU6601_INT_DATA_CRC_ERR | \
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AU6601_INT_DATA_END_BIT_ERR)
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#define AU6601_INT_ALL_MASK ((u32)-1)
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/* MS_CARD mode registers */
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#define AU6601_MS_STATUS 0xa0
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#define AU6601_MS_BUS_MODE_CTRL 0xa1
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#define AU6601_MS_BUS_8BIT_MODE 0x03
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#define AU6601_MS_BUS_4BIT_MODE 0x01
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#define AU6601_MS_BUS_1BIT_MODE 0x00
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#define AU6601_MS_TPC_CMD 0xa2
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#define AU6601_MS_TPC_READ_PAGE_DATA 0x02
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#define AU6601_MS_TPC_READ_REG 0x04
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#define AU6601_MS_TPC_GET_INT 0x07
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#define AU6601_MS_TPC_WRITE_PAGE_DATA 0x0D
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#define AU6601_MS_TPC_WRITE_REG 0x0B
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#define AU6601_MS_TPC_SET_RW_REG_ADRS 0x08
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#define AU6601_MS_TPC_SET_CMD 0x0E
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#define AU6601_MS_TPC_EX_SET_CMD 0x09
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#define AU6601_MS_TPC_READ_SHORT_DATA 0x03
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#define AU6601_MS_TPC_WRITE_SHORT_DATA 0x0C
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#define AU6601_MS_TRANSFER_MODE 0xa3
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#define AU6601_MS_XFER_INT_TIMEOUT_CHK BIT(2)
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#define AU6601_MS_XFER_DMA_ENABLE BIT(1)
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#define AU6601_MS_XFER_START BIT(0)
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#define AU6601_MS_DATA_PIN_STATE 0xa4
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#define AU6601_MS_INT_STATUS 0xb0
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#define AU6601_MS_INT_ENABLE 0xb4
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#define AU6601_MS_INT_OVER_CURRENT_ERROR BIT(23)
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#define AU6601_MS_INT_DATA_CRC_ERROR BIT(21)
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#define AU6601_MS_INT_INT_TIMEOUT BIT(20)
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#define AU6601_MS_INT_INT_RESP_ERROR BIT(19)
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#define AU6601_MS_INT_CED_ERROR BIT(18)
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#define AU6601_MS_INT_TPC_TIMEOUT BIT(16)
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#define AU6601_MS_INT_ERROR BIT(15)
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#define AU6601_MS_INT_CARD_INSERT BIT(7)
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#define AU6601_MS_INT_CARD_REMOVE BIT(6)
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#define AU6601_MS_INT_BUF_READ_RDY BIT(5)
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#define AU6601_MS_INT_BUF_WRITE_RDY BIT(4)
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#define AU6601_MS_INT_DMA_END BIT(3)
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#define AU6601_MS_INT_TPC_END BIT(1)
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#define AU6601_MS_INT_DATA_MASK 0x00000038
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#define AU6601_MS_INT_TPC_MASK 0x003d8002
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#define AU6601_MS_INT_TPC_ERROR 0x003d0000
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#define ALCOR_PCIE_LINK_CTRL_OFFSET 0x10
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#define ALCOR_PCIE_LINK_CAP_OFFSET 0x0c
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#define ALCOR_CAP_START_OFFSET 0x34
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struct alcor_dev_cfg {
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u8 dma;
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};
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struct alcor_pci_priv {
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struct pci_dev *pdev;
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struct pci_dev *parent_pdev;
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struct device *dev;
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void __iomem *iobase;
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unsigned int irq;
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unsigned long id; /* idr id */
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struct alcor_dev_cfg *cfg;
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/* PCI ASPM related vars */
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int pdev_cap_off;
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u8 pdev_aspm_cap;
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int parent_cap_off;
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u8 parent_aspm_cap;
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u8 ext_config_dev_aspm;
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};
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void alcor_write8(struct alcor_pci_priv *priv, u8 val, unsigned int addr);
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void alcor_write16(struct alcor_pci_priv *priv, u16 val, unsigned int addr);
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void alcor_write32(struct alcor_pci_priv *priv, u32 val, unsigned int addr);
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void alcor_write32be(struct alcor_pci_priv *priv, u32 val, unsigned int addr);
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u8 alcor_read8(struct alcor_pci_priv *priv, unsigned int addr);
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u32 alcor_read32(struct alcor_pci_priv *priv, unsigned int addr);
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u32 alcor_read32be(struct alcor_pci_priv *priv, unsigned int addr);
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#endif
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