1 /* 2 * linux/drivers/mmc/sdhci.h - Secure Digital Host Controller Interface driver 3 * 4 * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or (at 9 * your option) any later version. 10 */ 11 12 /* 13 * PCI registers 14 */ 15 16 #define PCI_SDHCI_IFPIO 0x00 17 #define PCI_SDHCI_IFDMA 0x01 18 #define PCI_SDHCI_IFVENDOR 0x02 19 20 #define PCI_SLOT_INFO 0x40 /* 8 bits */ 21 #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7) 22 #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07 23 24 /* 25 * Controller registers 26 */ 27 28 #define SDHCI_DMA_ADDRESS 0x00 29 30 #define SDHCI_BLOCK_SIZE 0x04 31 #define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF)) 32 33 #define SDHCI_BLOCK_COUNT 0x06 34 35 #define SDHCI_ARGUMENT 0x08 36 37 #define SDHCI_TRANSFER_MODE 0x0C 38 #define SDHCI_TRNS_DMA 0x01 39 #define SDHCI_TRNS_BLK_CNT_EN 0x02 40 #define SDHCI_TRNS_ACMD12 0x04 41 #define SDHCI_TRNS_READ 0x10 42 #define SDHCI_TRNS_MULTI 0x20 43 44 #define SDHCI_COMMAND 0x0E 45 #define SDHCI_CMD_RESP_MASK 0x03 46 #define SDHCI_CMD_CRC 0x08 47 #define SDHCI_CMD_INDEX 0x10 48 #define SDHCI_CMD_DATA 0x20 49 50 #define SDHCI_CMD_RESP_NONE 0x00 51 #define SDHCI_CMD_RESP_LONG 0x01 52 #define SDHCI_CMD_RESP_SHORT 0x02 53 #define SDHCI_CMD_RESP_SHORT_BUSY 0x03 54 55 #define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff)) 56 57 #define SDHCI_RESPONSE 0x10 58 59 #define SDHCI_BUFFER 0x20 60 61 #define SDHCI_PRESENT_STATE 0x24 62 #define SDHCI_CMD_INHIBIT 0x00000001 63 #define SDHCI_DATA_INHIBIT 0x00000002 64 #define SDHCI_DOING_WRITE 0x00000100 65 #define SDHCI_DOING_READ 0x00000200 66 #define SDHCI_SPACE_AVAILABLE 0x00000400 67 #define SDHCI_DATA_AVAILABLE 0x00000800 68 #define SDHCI_CARD_PRESENT 0x00010000 69 #define SDHCI_WRITE_PROTECT 0x00080000 70 71 #define SDHCI_HOST_CONTROL 0x28 72 #define SDHCI_CTRL_LED 0x01 73 #define SDHCI_CTRL_4BITBUS 0x02 74 #define SDHCI_CTRL_HISPD 0x04 75 76 #define SDHCI_POWER_CONTROL 0x29 77 #define SDHCI_POWER_ON 0x01 78 #define SDHCI_POWER_180 0x0A 79 #define SDHCI_POWER_300 0x0C 80 #define SDHCI_POWER_330 0x0E 81 82 #define SDHCI_BLOCK_GAP_CONTROL 0x2A 83 84 #define SDHCI_WALK_UP_CONTROL 0x2B 85 86 #define SDHCI_CLOCK_CONTROL 0x2C 87 #define SDHCI_DIVIDER_SHIFT 8 88 #define SDHCI_CLOCK_CARD_EN 0x0004 89 #define SDHCI_CLOCK_INT_STABLE 0x0002 90 #define SDHCI_CLOCK_INT_EN 0x0001 91 92 #define SDHCI_TIMEOUT_CONTROL 0x2E 93 94 #define SDHCI_SOFTWARE_RESET 0x2F 95 #define SDHCI_RESET_ALL 0x01 96 #define SDHCI_RESET_CMD 0x02 97 #define SDHCI_RESET_DATA 0x04 98 99 #define SDHCI_INT_STATUS 0x30 100 #define SDHCI_INT_ENABLE 0x34 101 #define SDHCI_SIGNAL_ENABLE 0x38 102 #define SDHCI_INT_RESPONSE 0x00000001 103 #define SDHCI_INT_DATA_END 0x00000002 104 #define SDHCI_INT_DMA_END 0x00000008 105 #define SDHCI_INT_SPACE_AVAIL 0x00000010 106 #define SDHCI_INT_DATA_AVAIL 0x00000020 107 #define SDHCI_INT_CARD_INSERT 0x00000040 108 #define SDHCI_INT_CARD_REMOVE 0x00000080 109 #define SDHCI_INT_CARD_INT 0x00000100 110 #define SDHCI_INT_TIMEOUT 0x00010000 111 #define SDHCI_INT_CRC 0x00020000 112 #define SDHCI_INT_END_BIT 0x00040000 113 #define SDHCI_INT_INDEX 0x00080000 114 #define SDHCI_INT_DATA_TIMEOUT 0x00100000 115 #define SDHCI_INT_DATA_CRC 0x00200000 116 #define SDHCI_INT_DATA_END_BIT 0x00400000 117 #define SDHCI_INT_BUS_POWER 0x00800000 118 #define SDHCI_INT_ACMD12ERR 0x01000000 119 120 #define SDHCI_INT_NORMAL_MASK 0x00007FFF 121 #define SDHCI_INT_ERROR_MASK 0xFFFF8000 122 123 #define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \ 124 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX) 125 #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ 126 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ 127 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ 128 SDHCI_INT_DATA_END_BIT) 129 130 #define SDHCI_ACMD12_ERR 0x3C 131 132 /* 3E-3F reserved */ 133 134 #define SDHCI_CAPABILITIES 0x40 135 #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F 136 #define SDHCI_TIMEOUT_CLK_SHIFT 0 137 #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080 138 #define SDHCI_CLOCK_BASE_MASK 0x00003F00 139 #define SDHCI_CLOCK_BASE_SHIFT 8 140 #define SDHCI_MAX_BLOCK_MASK 0x00030000 141 #define SDHCI_MAX_BLOCK_SHIFT 16 142 #define SDHCI_CAN_DO_HISPD 0x00200000 143 #define SDHCI_CAN_DO_DMA 0x00400000 144 #define SDHCI_CAN_VDD_330 0x01000000 145 #define SDHCI_CAN_VDD_300 0x02000000 146 #define SDHCI_CAN_VDD_180 0x04000000 147 148 /* 44-47 reserved for more caps */ 149 150 #define SDHCI_MAX_CURRENT 0x48 151 152 /* 4C-4F reserved for more max current */ 153 154 /* 50-FB reserved */ 155 156 #define SDHCI_SLOT_INT_STATUS 0xFC 157 158 #define SDHCI_HOST_VERSION 0xFE 159 #define SDHCI_VENDOR_VER_MASK 0xFF00 160 #define SDHCI_VENDOR_VER_SHIFT 8 161 #define SDHCI_SPEC_VER_MASK 0x00FF 162 #define SDHCI_SPEC_VER_SHIFT 0 163 164 struct sdhci_chip; 165 166 struct sdhci_host { 167 struct sdhci_chip *chip; 168 struct mmc_host *mmc; /* MMC structure */ 169 170 spinlock_t lock; /* Mutex */ 171 172 int flags; /* Host attributes */ 173 #define SDHCI_USE_DMA (1<<0) 174 175 unsigned int max_clk; /* Max possible freq (MHz) */ 176 unsigned int timeout_clk; /* Timeout freq (KHz) */ 177 178 unsigned int clock; /* Current clock (MHz) */ 179 unsigned short power; /* Current voltage */ 180 181 struct mmc_request *mrq; /* Current request */ 182 struct mmc_command *cmd; /* Current command */ 183 struct mmc_data *data; /* Current data request */ 184 185 struct scatterlist *cur_sg; /* We're working on this */ 186 int num_sg; /* Entries left */ 187 int offset; /* Offset into current sg */ 188 int remain; /* Bytes left in current */ 189 190 char slot_descr[20]; /* Name for reservations */ 191 192 int irq; /* Device IRQ */ 193 int bar; /* PCI BAR index */ 194 unsigned long addr; /* Bus address */ 195 void __iomem * ioaddr; /* Mapped address */ 196 197 struct tasklet_struct card_tasklet; /* Tasklet structures */ 198 struct tasklet_struct finish_tasklet; 199 200 struct timer_list timer; /* Timer for timeouts */ 201 }; 202 203 struct sdhci_chip { 204 struct pci_dev *pdev; 205 206 unsigned long quirks; 207 208 int num_slots; /* Slots on controller */ 209 struct sdhci_host *hosts[0]; /* Pointers to hosts */ 210 }; 211