1/* 2 * Synopsys DesignWare Multimedia Card Interface driver 3 * (Based on NXP driver for lpc 31xx) 4 * 5 * Copyright (C) 2009 NXP Semiconductors 6 * Copyright (C) 2009, 2010 Imagination Technologies Ltd. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14#ifndef _DW_MMC_H_ 15#define _DW_MMC_H_ 16 17#define DW_MMC_240A 0x240a 18 19#define SDMMC_CTRL 0x000 20#define SDMMC_PWREN 0x004 21#define SDMMC_CLKDIV 0x008 22#define SDMMC_CLKSRC 0x00c 23#define SDMMC_CLKENA 0x010 24#define SDMMC_TMOUT 0x014 25#define SDMMC_CTYPE 0x018 26#define SDMMC_BLKSIZ 0x01c 27#define SDMMC_BYTCNT 0x020 28#define SDMMC_INTMASK 0x024 29#define SDMMC_CMDARG 0x028 30#define SDMMC_CMD 0x02c 31#define SDMMC_RESP0 0x030 32#define SDMMC_RESP1 0x034 33#define SDMMC_RESP2 0x038 34#define SDMMC_RESP3 0x03c 35#define SDMMC_MINTSTS 0x040 36#define SDMMC_RINTSTS 0x044 37#define SDMMC_STATUS 0x048 38#define SDMMC_FIFOTH 0x04c 39#define SDMMC_CDETECT 0x050 40#define SDMMC_WRTPRT 0x054 41#define SDMMC_GPIO 0x058 42#define SDMMC_TCBCNT 0x05c 43#define SDMMC_TBBCNT 0x060 44#define SDMMC_DEBNCE 0x064 45#define SDMMC_USRID 0x068 46#define SDMMC_VERID 0x06c 47#define SDMMC_HCON 0x070 48#define SDMMC_UHS_REG 0x074 49#define SDMMC_BMOD 0x080 50#define SDMMC_PLDMND 0x084 51#define SDMMC_DBADDR 0x088 52#define SDMMC_IDSTS 0x08c 53#define SDMMC_IDINTEN 0x090 54#define SDMMC_DSCADDR 0x094 55#define SDMMC_BUFADDR 0x098 56#define SDMMC_CDTHRCTL 0x100 57#define SDMMC_DATA(x) (x) 58/* 59* Registers to support idmac 64-bit address mode 60*/ 61#define SDMMC_DBADDRL 0x088 62#define SDMMC_DBADDRU 0x08c 63#define SDMMC_IDSTS64 0x090 64#define SDMMC_IDINTEN64 0x094 65#define SDMMC_DSCADDRL 0x098 66#define SDMMC_DSCADDRU 0x09c 67#define SDMMC_BUFADDRL 0x0A0 68#define SDMMC_BUFADDRU 0x0A4 69 70/* 71 * Data offset is difference according to Version 72 * Lower than 2.40a : data register offest is 0x100 73 */ 74#define DATA_OFFSET 0x100 75#define DATA_240A_OFFSET 0x200 76 77/* shift bit field */ 78#define _SBF(f, v) ((v) << (f)) 79 80/* Control register defines */ 81#define SDMMC_CTRL_USE_IDMAC BIT(25) 82#define SDMMC_CTRL_CEATA_INT_EN BIT(11) 83#define SDMMC_CTRL_SEND_AS_CCSD BIT(10) 84#define SDMMC_CTRL_SEND_CCSD BIT(9) 85#define SDMMC_CTRL_ABRT_READ_DATA BIT(8) 86#define SDMMC_CTRL_SEND_IRQ_RESP BIT(7) 87#define SDMMC_CTRL_READ_WAIT BIT(6) 88#define SDMMC_CTRL_DMA_ENABLE BIT(5) 89#define SDMMC_CTRL_INT_ENABLE BIT(4) 90#define SDMMC_CTRL_DMA_RESET BIT(2) 91#define SDMMC_CTRL_FIFO_RESET BIT(1) 92#define SDMMC_CTRL_RESET BIT(0) 93/* Clock Enable register defines */ 94#define SDMMC_CLKEN_LOW_PWR BIT(16) 95#define SDMMC_CLKEN_ENABLE BIT(0) 96/* time-out register defines */ 97#define SDMMC_TMOUT_DATA(n) _SBF(8, (n)) 98#define SDMMC_TMOUT_DATA_MSK 0xFFFFFF00 99#define SDMMC_TMOUT_RESP(n) ((n) & 0xFF) 100#define SDMMC_TMOUT_RESP_MSK 0xFF 101/* card-type register defines */ 102#define SDMMC_CTYPE_8BIT BIT(16) 103#define SDMMC_CTYPE_4BIT BIT(0) 104#define SDMMC_CTYPE_1BIT 0 105/* Interrupt status & mask register defines */ 106#define SDMMC_INT_SDIO(n) BIT(16 + (n)) 107#define SDMMC_INT_EBE BIT(15) 108#define SDMMC_INT_ACD BIT(14) 109#define SDMMC_INT_SBE BIT(13) 110#define SDMMC_INT_HLE BIT(12) 111#define SDMMC_INT_FRUN BIT(11) 112#define SDMMC_INT_HTO BIT(10) 113#define SDMMC_INT_VOLT_SWITCH BIT(10) /* overloads bit 10! */ 114#define SDMMC_INT_DRTO BIT(9) 115#define SDMMC_INT_RTO BIT(8) 116#define SDMMC_INT_DCRC BIT(7) 117#define SDMMC_INT_RCRC BIT(6) 118#define SDMMC_INT_RXDR BIT(5) 119#define SDMMC_INT_TXDR BIT(4) 120#define SDMMC_INT_DATA_OVER BIT(3) 121#define SDMMC_INT_CMD_DONE BIT(2) 122#define SDMMC_INT_RESP_ERR BIT(1) 123#define SDMMC_INT_CD BIT(0) 124#define SDMMC_INT_ERROR 0xbfc2 125/* Command register defines */ 126#define SDMMC_CMD_START BIT(31) 127#define SDMMC_CMD_USE_HOLD_REG BIT(29) 128#define SDMMC_CMD_VOLT_SWITCH BIT(28) 129#define SDMMC_CMD_CCS_EXP BIT(23) 130#define SDMMC_CMD_CEATA_RD BIT(22) 131#define SDMMC_CMD_UPD_CLK BIT(21) 132#define SDMMC_CMD_INIT BIT(15) 133#define SDMMC_CMD_STOP BIT(14) 134#define SDMMC_CMD_PRV_DAT_WAIT BIT(13) 135#define SDMMC_CMD_SEND_STOP BIT(12) 136#define SDMMC_CMD_STRM_MODE BIT(11) 137#define SDMMC_CMD_DAT_WR BIT(10) 138#define SDMMC_CMD_DAT_EXP BIT(9) 139#define SDMMC_CMD_RESP_CRC BIT(8) 140#define SDMMC_CMD_RESP_LONG BIT(7) 141#define SDMMC_CMD_RESP_EXP BIT(6) 142#define SDMMC_CMD_INDX(n) ((n) & 0x1F) 143/* Status register defines */ 144#define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF) 145#define SDMMC_STATUS_DMA_REQ BIT(31) 146#define SDMMC_STATUS_BUSY BIT(9) 147/* FIFOTH register defines */ 148#define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 | \ 149 ((r) & 0xFFF) << 16 | \ 150 ((t) & 0xFFF)) 151/* HCON register defines */ 152#define DMA_INTERFACE_IDMA (0x0) 153#define DMA_INTERFACE_DWDMA (0x1) 154#define DMA_INTERFACE_GDMA (0x2) 155#define DMA_INTERFACE_NODMA (0x3) 156#define SDMMC_GET_TRANS_MODE(x) (((x)>>16) & 0x3) 157#define SDMMC_GET_SLOT_NUM(x) ((((x)>>1) & 0x1F) + 1) 158#define SDMMC_GET_HDATA_WIDTH(x) (((x)>>7) & 0x7) 159#define SDMMC_GET_ADDR_CONFIG(x) (((x)>>27) & 0x1) 160/* Internal DMAC interrupt defines */ 161#define SDMMC_IDMAC_INT_AI BIT(9) 162#define SDMMC_IDMAC_INT_NI BIT(8) 163#define SDMMC_IDMAC_INT_CES BIT(5) 164#define SDMMC_IDMAC_INT_DU BIT(4) 165#define SDMMC_IDMAC_INT_FBE BIT(2) 166#define SDMMC_IDMAC_INT_RI BIT(1) 167#define SDMMC_IDMAC_INT_TI BIT(0) 168/* Internal DMAC bus mode bits */ 169#define SDMMC_IDMAC_ENABLE BIT(7) 170#define SDMMC_IDMAC_FB BIT(1) 171#define SDMMC_IDMAC_SWRESET BIT(0) 172/* Version ID register define */ 173#define SDMMC_GET_VERID(x) ((x) & 0xFFFF) 174/* Card read threshold */ 175#define SDMMC_SET_RD_THLD(v, x) (((v) & 0xFFF) << 16 | (x)) 176#define SDMMC_UHS_18V BIT(0) 177/* All ctrl reset bits */ 178#define SDMMC_CTRL_ALL_RESET_FLAGS \ 179 (SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET) 180 181/* FIFO register access macros. These should not change the data endian-ness 182 * as they are written to memory to be dealt with by the upper layers */ 183#define mci_fifo_readw(__reg) __raw_readw(__reg) 184#define mci_fifo_readl(__reg) __raw_readl(__reg) 185#define mci_fifo_readq(__reg) __raw_readq(__reg) 186 187#define mci_fifo_writew(__value, __reg) __raw_writew(__reg, __value) 188#define mci_fifo_writel(__value, __reg) __raw_writel(__reg, __value) 189#define mci_fifo_writeq(__value, __reg) __raw_writeq(__reg, __value) 190 191/* Register access macros */ 192#define mci_readl(dev, reg) \ 193 readl_relaxed((dev)->regs + SDMMC_##reg) 194#define mci_writel(dev, reg, value) \ 195 writel_relaxed((value), (dev)->regs + SDMMC_##reg) 196 197/* 16-bit FIFO access macros */ 198#define mci_readw(dev, reg) \ 199 readw_relaxed((dev)->regs + SDMMC_##reg) 200#define mci_writew(dev, reg, value) \ 201 writew_relaxed((value), (dev)->regs + SDMMC_##reg) 202 203/* 64-bit FIFO access macros */ 204#ifdef readq 205#define mci_readq(dev, reg) \ 206 readq_relaxed((dev)->regs + SDMMC_##reg) 207#define mci_writeq(dev, reg, value) \ 208 writeq_relaxed((value), (dev)->regs + SDMMC_##reg) 209#else 210/* 211 * Dummy readq implementation for architectures that don't define it. 212 * 213 * We would assume that none of these architectures would configure 214 * the IP block with a 64bit FIFO width, so this code will never be 215 * executed on those machines. Defining these macros here keeps the 216 * rest of the code free from ifdefs. 217 */ 218#define mci_readq(dev, reg) \ 219 (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg)) 220#define mci_writeq(dev, reg, value) \ 221 (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value)) 222 223#define __raw_writeq(__value, __reg) \ 224 (*(volatile u64 __force *)(__reg) = (__value)) 225#define __raw_readq(__reg) (*(volatile u64 __force *)(__reg)) 226#endif 227 228extern int dw_mci_probe(struct dw_mci *host); 229extern void dw_mci_remove(struct dw_mci *host); 230#ifdef CONFIG_PM_SLEEP 231extern int dw_mci_suspend(struct dw_mci *host); 232extern int dw_mci_resume(struct dw_mci *host); 233#endif 234 235/** 236 * struct dw_mci_slot - MMC slot state 237 * @mmc: The mmc_host representing this slot. 238 * @host: The MMC controller this slot is using. 239 * @ctype: Card type for this slot. 240 * @mrq: mmc_request currently being processed or waiting to be 241 * processed, or NULL when the slot is idle. 242 * @queue_node: List node for placing this node in the @queue list of 243 * &struct dw_mci. 244 * @clock: Clock rate configured by set_ios(). Protected by host->lock. 245 * @__clk_old: The last updated clock with reflecting clock divider. 246 * Keeping track of this helps us to avoid spamming the console 247 * with CONFIG_MMC_CLKGATE. 248 * @flags: Random state bits associated with the slot. 249 * @id: Number of this slot. 250 * @sdio_id: Number of this slot in the SDIO interrupt registers. 251 */ 252struct dw_mci_slot { 253 struct mmc_host *mmc; 254 struct dw_mci *host; 255 256 u32 ctype; 257 258 struct mmc_request *mrq; 259 struct list_head queue_node; 260 261 unsigned int clock; 262 unsigned int __clk_old; 263 264 unsigned long flags; 265#define DW_MMC_CARD_PRESENT 0 266#define DW_MMC_CARD_NEED_INIT 1 267#define DW_MMC_CARD_NO_LOW_PWR 2 268 int id; 269 int sdio_id; 270}; 271 272/** 273 * dw_mci driver data - dw-mshc implementation specific driver data. 274 * @caps: mmc subsystem specified capabilities of the controller(s). 275 * @init: early implementation specific initialization. 276 * @setup_clock: implementation specific clock configuration. 277 * @prepare_command: handle CMD register extensions. 278 * @set_ios: handle bus specific extensions. 279 * @parse_dt: parse implementation specific device tree properties. 280 * @execute_tuning: implementation specific tuning procedure. 281 * 282 * Provide controller implementation specific extensions. The usage of this 283 * data structure is fully optional and usage of each member in this structure 284 * is optional as well. 285 */ 286struct dw_mci_drv_data { 287 unsigned long *caps; 288 int (*init)(struct dw_mci *host); 289 int (*setup_clock)(struct dw_mci *host); 290 void (*prepare_command)(struct dw_mci *host, u32 *cmdr); 291 void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); 292 int (*parse_dt)(struct dw_mci *host); 293 int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode); 294 int (*prepare_hs400_tuning)(struct dw_mci *host, 295 struct mmc_ios *ios); 296 int (*switch_voltage)(struct mmc_host *mmc, 297 struct mmc_ios *ios); 298}; 299#endif /* _DW_MMC_H_ */ 300