1 /* 2 * linux/drivers/mmc/host/mmci.h - ARM PrimeCell MMCI PL180/1 driver 3 * 4 * Copyright (C) 2003 Deep Blue Solutions, Ltd, 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 version 2 as 8 * published by the Free Software Foundation. 9 */ 10 #define MMCIPOWER 0x000 11 #define MCI_PWR_OFF 0x00 12 #define MCI_PWR_UP 0x02 13 #define MCI_PWR_ON 0x03 14 #define MCI_OD (1 << 6) 15 #define MCI_ROD (1 << 7) 16 17 #define MMCICLOCK 0x004 18 #define MCI_CLK_ENABLE (1 << 8) 19 #define MCI_CLK_PWRSAVE (1 << 9) 20 #define MCI_CLK_BYPASS (1 << 10) 21 #define MCI_4BIT_BUS (1 << 11) 22 /* 23 * 8bit wide buses, hardware flow contronl, negative edges and clock inversion 24 * supported in ST Micro U300 and Ux500 versions 25 */ 26 #define MCI_ST_8BIT_BUS (1 << 12) 27 #define MCI_ST_U300_HWFCEN (1 << 13) 28 #define MCI_ST_UX500_NEG_EDGE (1 << 13) 29 #define MCI_ST_UX500_HWFCEN (1 << 14) 30 #define MCI_ST_UX500_CLK_INV (1 << 15) 31 /* Modified PL180 on Versatile Express platform */ 32 #define MCI_ARM_HWFCEN (1 << 12) 33 34 #define MMCIARGUMENT 0x008 35 #define MMCICOMMAND 0x00c 36 #define MCI_CPSM_RESPONSE (1 << 6) 37 #define MCI_CPSM_LONGRSP (1 << 7) 38 #define MCI_CPSM_INTERRUPT (1 << 8) 39 #define MCI_CPSM_PENDING (1 << 9) 40 #define MCI_CPSM_ENABLE (1 << 10) 41 /* Argument flag extenstions in the ST Micro versions */ 42 #define MCI_ST_SDIO_SUSP (1 << 11) 43 #define MCI_ST_ENCMD_COMPL (1 << 12) 44 #define MCI_ST_NIEN (1 << 13) 45 #define MCI_ST_CE_ATACMD (1 << 14) 46 47 #define MMCIRESPCMD 0x010 48 #define MMCIRESPONSE0 0x014 49 #define MMCIRESPONSE1 0x018 50 #define MMCIRESPONSE2 0x01c 51 #define MMCIRESPONSE3 0x020 52 #define MMCIDATATIMER 0x024 53 #define MMCIDATALENGTH 0x028 54 #define MMCIDATACTRL 0x02c 55 #define MCI_DPSM_ENABLE (1 << 0) 56 #define MCI_DPSM_DIRECTION (1 << 1) 57 #define MCI_DPSM_MODE (1 << 2) 58 #define MCI_DPSM_DMAENABLE (1 << 3) 59 #define MCI_DPSM_BLOCKSIZE (1 << 4) 60 /* Control register extensions in the ST Micro U300 and Ux500 versions */ 61 #define MCI_ST_DPSM_RWSTART (1 << 8) 62 #define MCI_ST_DPSM_RWSTOP (1 << 9) 63 #define MCI_ST_DPSM_RWMOD (1 << 10) 64 #define MCI_ST_DPSM_SDIOEN (1 << 11) 65 /* Control register extensions in the ST Micro Ux500 versions */ 66 #define MCI_ST_DPSM_DMAREQCTL (1 << 12) 67 #define MCI_ST_DPSM_DBOOTMODEEN (1 << 13) 68 #define MCI_ST_DPSM_BUSYMODE (1 << 14) 69 #define MCI_ST_DPSM_DDRMODE (1 << 15) 70 71 #define MMCIDATACNT 0x030 72 #define MMCISTATUS 0x034 73 #define MCI_CMDCRCFAIL (1 << 0) 74 #define MCI_DATACRCFAIL (1 << 1) 75 #define MCI_CMDTIMEOUT (1 << 2) 76 #define MCI_DATATIMEOUT (1 << 3) 77 #define MCI_TXUNDERRUN (1 << 4) 78 #define MCI_RXOVERRUN (1 << 5) 79 #define MCI_CMDRESPEND (1 << 6) 80 #define MCI_CMDSENT (1 << 7) 81 #define MCI_DATAEND (1 << 8) 82 #define MCI_STARTBITERR (1 << 9) 83 #define MCI_DATABLOCKEND (1 << 10) 84 #define MCI_CMDACTIVE (1 << 11) 85 #define MCI_TXACTIVE (1 << 12) 86 #define MCI_RXACTIVE (1 << 13) 87 #define MCI_TXFIFOHALFEMPTY (1 << 14) 88 #define MCI_RXFIFOHALFFULL (1 << 15) 89 #define MCI_TXFIFOFULL (1 << 16) 90 #define MCI_RXFIFOFULL (1 << 17) 91 #define MCI_TXFIFOEMPTY (1 << 18) 92 #define MCI_RXFIFOEMPTY (1 << 19) 93 #define MCI_TXDATAAVLBL (1 << 20) 94 #define MCI_RXDATAAVLBL (1 << 21) 95 /* Extended status bits for the ST Micro variants */ 96 #define MCI_ST_SDIOIT (1 << 22) 97 #define MCI_ST_CEATAEND (1 << 23) 98 #define MCI_ST_CARDBUSY (1 << 24) 99 100 #define MMCICLEAR 0x038 101 #define MCI_CMDCRCFAILCLR (1 << 0) 102 #define MCI_DATACRCFAILCLR (1 << 1) 103 #define MCI_CMDTIMEOUTCLR (1 << 2) 104 #define MCI_DATATIMEOUTCLR (1 << 3) 105 #define MCI_TXUNDERRUNCLR (1 << 4) 106 #define MCI_RXOVERRUNCLR (1 << 5) 107 #define MCI_CMDRESPENDCLR (1 << 6) 108 #define MCI_CMDSENTCLR (1 << 7) 109 #define MCI_DATAENDCLR (1 << 8) 110 #define MCI_STARTBITERRCLR (1 << 9) 111 #define MCI_DATABLOCKENDCLR (1 << 10) 112 /* Extended status bits for the ST Micro variants */ 113 #define MCI_ST_SDIOITC (1 << 22) 114 #define MCI_ST_CEATAENDC (1 << 23) 115 #define MCI_ST_BUSYENDC (1 << 24) 116 117 #define MMCIMASK0 0x03c 118 #define MCI_CMDCRCFAILMASK (1 << 0) 119 #define MCI_DATACRCFAILMASK (1 << 1) 120 #define MCI_CMDTIMEOUTMASK (1 << 2) 121 #define MCI_DATATIMEOUTMASK (1 << 3) 122 #define MCI_TXUNDERRUNMASK (1 << 4) 123 #define MCI_RXOVERRUNMASK (1 << 5) 124 #define MCI_CMDRESPENDMASK (1 << 6) 125 #define MCI_CMDSENTMASK (1 << 7) 126 #define MCI_DATAENDMASK (1 << 8) 127 #define MCI_STARTBITERRMASK (1 << 9) 128 #define MCI_DATABLOCKENDMASK (1 << 10) 129 #define MCI_CMDACTIVEMASK (1 << 11) 130 #define MCI_TXACTIVEMASK (1 << 12) 131 #define MCI_RXACTIVEMASK (1 << 13) 132 #define MCI_TXFIFOHALFEMPTYMASK (1 << 14) 133 #define MCI_RXFIFOHALFFULLMASK (1 << 15) 134 #define MCI_TXFIFOFULLMASK (1 << 16) 135 #define MCI_RXFIFOFULLMASK (1 << 17) 136 #define MCI_TXFIFOEMPTYMASK (1 << 18) 137 #define MCI_RXFIFOEMPTYMASK (1 << 19) 138 #define MCI_TXDATAAVLBLMASK (1 << 20) 139 #define MCI_RXDATAAVLBLMASK (1 << 21) 140 /* Extended status bits for the ST Micro variants */ 141 #define MCI_ST_SDIOITMASK (1 << 22) 142 #define MCI_ST_CEATAENDMASK (1 << 23) 143 #define MCI_ST_BUSYEND (1 << 24) 144 145 #define MMCIMASK1 0x040 146 #define MMCIFIFOCNT 0x048 147 #define MMCIFIFO 0x080 /* to 0x0bc */ 148 149 #define MCI_IRQENABLE \ 150 (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \ 151 MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \ 152 MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_STARTBITERRMASK) 153 154 /* These interrupts are directed to IRQ1 when two IRQ lines are available */ 155 #define MCI_IRQ1MASK \ 156 (MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \ 157 MCI_TXFIFOHALFEMPTYMASK) 158 159 #define NR_SG 128 160 161 struct clk; 162 struct variant_data; 163 struct dma_chan; 164 165 struct mmci_host_next { 166 struct dma_async_tx_descriptor *dma_desc; 167 struct dma_chan *dma_chan; 168 s32 cookie; 169 }; 170 171 struct mmci_host { 172 phys_addr_t phybase; 173 void __iomem *base; 174 struct mmc_request *mrq; 175 struct mmc_command *cmd; 176 struct mmc_data *data; 177 struct mmc_host *mmc; 178 struct clk *clk; 179 int gpio_cd; 180 int gpio_wp; 181 int gpio_cd_irq; 182 bool singleirq; 183 184 spinlock_t lock; 185 186 unsigned int mclk; 187 unsigned int cclk; 188 u32 pwr_reg; 189 u32 clk_reg; 190 u32 datactrl_reg; 191 u32 busy_status; 192 bool vqmmc_enabled; 193 struct mmci_platform_data *plat; 194 struct variant_data *variant; 195 196 u8 hw_designer; 197 u8 hw_revision:4; 198 199 struct timer_list timer; 200 unsigned int oldstat; 201 202 /* pio stuff */ 203 struct sg_mapping_iter sg_miter; 204 unsigned int size; 205 206 #ifdef CONFIG_DMA_ENGINE 207 /* DMA stuff */ 208 struct dma_chan *dma_current; 209 struct dma_chan *dma_rx_channel; 210 struct dma_chan *dma_tx_channel; 211 struct dma_async_tx_descriptor *dma_desc_current; 212 struct mmci_host_next next_data; 213 214 #define dma_inprogress(host) ((host)->dma_current) 215 #else 216 #define dma_inprogress(host) (0) 217 #endif 218 }; 219 220