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 22 #define MMCIARGUMENT 0x008 23 #define MMCICOMMAND 0x00c 24 #define MCI_CPSM_RESPONSE (1 << 6) 25 #define MCI_CPSM_LONGRSP (1 << 7) 26 #define MCI_CPSM_INTERRUPT (1 << 8) 27 #define MCI_CPSM_PENDING (1 << 9) 28 #define MCI_CPSM_ENABLE (1 << 10) 29 30 #define MMCIRESPCMD 0x010 31 #define MMCIRESPONSE0 0x014 32 #define MMCIRESPONSE1 0x018 33 #define MMCIRESPONSE2 0x01c 34 #define MMCIRESPONSE3 0x020 35 #define MMCIDATATIMER 0x024 36 #define MMCIDATALENGTH 0x028 37 #define MMCIDATACTRL 0x02c 38 #define MCI_DPSM_ENABLE (1 << 0) 39 #define MCI_DPSM_DIRECTION (1 << 1) 40 #define MCI_DPSM_MODE (1 << 2) 41 #define MCI_DPSM_DMAENABLE (1 << 3) 42 43 #define MMCIDATACNT 0x030 44 #define MMCISTATUS 0x034 45 #define MCI_CMDCRCFAIL (1 << 0) 46 #define MCI_DATACRCFAIL (1 << 1) 47 #define MCI_CMDTIMEOUT (1 << 2) 48 #define MCI_DATATIMEOUT (1 << 3) 49 #define MCI_TXUNDERRUN (1 << 4) 50 #define MCI_RXOVERRUN (1 << 5) 51 #define MCI_CMDRESPEND (1 << 6) 52 #define MCI_CMDSENT (1 << 7) 53 #define MCI_DATAEND (1 << 8) 54 #define MCI_DATABLOCKEND (1 << 10) 55 #define MCI_CMDACTIVE (1 << 11) 56 #define MCI_TXACTIVE (1 << 12) 57 #define MCI_RXACTIVE (1 << 13) 58 #define MCI_TXFIFOHALFEMPTY (1 << 14) 59 #define MCI_RXFIFOHALFFULL (1 << 15) 60 #define MCI_TXFIFOFULL (1 << 16) 61 #define MCI_RXFIFOFULL (1 << 17) 62 #define MCI_TXFIFOEMPTY (1 << 18) 63 #define MCI_RXFIFOEMPTY (1 << 19) 64 #define MCI_TXDATAAVLBL (1 << 20) 65 #define MCI_RXDATAAVLBL (1 << 21) 66 67 #define MMCICLEAR 0x038 68 #define MCI_CMDCRCFAILCLR (1 << 0) 69 #define MCI_DATACRCFAILCLR (1 << 1) 70 #define MCI_CMDTIMEOUTCLR (1 << 2) 71 #define MCI_DATATIMEOUTCLR (1 << 3) 72 #define MCI_TXUNDERRUNCLR (1 << 4) 73 #define MCI_RXOVERRUNCLR (1 << 5) 74 #define MCI_CMDRESPENDCLR (1 << 6) 75 #define MCI_CMDSENTCLR (1 << 7) 76 #define MCI_DATAENDCLR (1 << 8) 77 #define MCI_DATABLOCKENDCLR (1 << 10) 78 79 #define MMCIMASK0 0x03c 80 #define MCI_CMDCRCFAILMASK (1 << 0) 81 #define MCI_DATACRCFAILMASK (1 << 1) 82 #define MCI_CMDTIMEOUTMASK (1 << 2) 83 #define MCI_DATATIMEOUTMASK (1 << 3) 84 #define MCI_TXUNDERRUNMASK (1 << 4) 85 #define MCI_RXOVERRUNMASK (1 << 5) 86 #define MCI_CMDRESPENDMASK (1 << 6) 87 #define MCI_CMDSENTMASK (1 << 7) 88 #define MCI_DATAENDMASK (1 << 8) 89 #define MCI_DATABLOCKENDMASK (1 << 10) 90 #define MCI_CMDACTIVEMASK (1 << 11) 91 #define MCI_TXACTIVEMASK (1 << 12) 92 #define MCI_RXACTIVEMASK (1 << 13) 93 #define MCI_TXFIFOHALFEMPTYMASK (1 << 14) 94 #define MCI_RXFIFOHALFFULLMASK (1 << 15) 95 #define MCI_TXFIFOFULLMASK (1 << 16) 96 #define MCI_RXFIFOFULLMASK (1 << 17) 97 #define MCI_TXFIFOEMPTYMASK (1 << 18) 98 #define MCI_RXFIFOEMPTYMASK (1 << 19) 99 #define MCI_TXDATAAVLBLMASK (1 << 20) 100 #define MCI_RXDATAAVLBLMASK (1 << 21) 101 102 #define MMCIMASK1 0x040 103 #define MMCIFIFOCNT 0x048 104 #define MMCIFIFO 0x080 /* to 0x0bc */ 105 106 #define MCI_IRQENABLE \ 107 (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \ 108 MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \ 109 MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATABLOCKENDMASK) 110 111 /* 112 * The size of the FIFO in bytes. 113 */ 114 #define MCI_FIFOSIZE (16*4) 115 116 #define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2) 117 118 #define NR_SG 16 119 120 struct clk; 121 122 struct mmci_host { 123 void __iomem *base; 124 struct mmc_request *mrq; 125 struct mmc_command *cmd; 126 struct mmc_data *data; 127 struct mmc_host *mmc; 128 struct clk *clk; 129 130 unsigned int data_xfered; 131 132 spinlock_t lock; 133 134 unsigned int mclk; 135 unsigned int cclk; 136 u32 pwr; 137 struct mmc_platform_data *plat; 138 139 struct timer_list timer; 140 unsigned int oldstat; 141 142 unsigned int sg_len; 143 144 /* pio stuff */ 145 struct scatterlist *sg_ptr; 146 unsigned int sg_off; 147 unsigned int size; 148 }; 149 150 static inline void mmci_init_sg(struct mmci_host *host, struct mmc_data *data) 151 { 152 /* 153 * Ideally, we want the higher levels to pass us a scatter list. 154 */ 155 host->sg_len = data->sg_len; 156 host->sg_ptr = data->sg; 157 host->sg_off = 0; 158 } 159 160 static inline int mmci_next_sg(struct mmci_host *host) 161 { 162 host->sg_ptr++; 163 host->sg_off = 0; 164 return --host->sg_len; 165 } 166 167 static inline char *mmci_kmap_atomic(struct mmci_host *host, unsigned long *flags) 168 { 169 struct scatterlist *sg = host->sg_ptr; 170 171 local_irq_save(*flags); 172 return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; 173 } 174 175 static inline void mmci_kunmap_atomic(struct mmci_host *host, void *buffer, unsigned long *flags) 176 { 177 kunmap_atomic(buffer, KM_BIO_SRC_IRQ); 178 local_irq_restore(*flags); 179 } 180