Ian Molton | 4a48998 | 2008-07-15 16:02:21 +0100 | [diff] [blame] | 1 | /* Definitons for use with the tmio_mmc.c |
| 2 | * |
| 3 | * (c) 2004 Ian Molton <spyro@f2s.com> |
| 4 | * (c) 2007 Ian Molton <spyro@f2s.com> |
| 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 | */ |
Alexander Beregalov | 4cb3290 | 2009-03-14 12:37:47 +0300 | [diff] [blame] | 11 | |
| 12 | #include <linux/highmem.h> |
| 13 | |
Ian Molton | 4a48998 | 2008-07-15 16:02:21 +0100 | [diff] [blame] | 14 | #define CNF_CMD 0x04 |
| 15 | #define CNF_CTL_BASE 0x10 |
| 16 | #define CNF_INT_PIN 0x3d |
| 17 | #define CNF_STOP_CLK_CTL 0x40 |
| 18 | #define CNF_GCLK_CTL 0x41 |
| 19 | #define CNF_SD_CLK_MODE 0x42 |
| 20 | #define CNF_PIN_STATUS 0x44 |
| 21 | #define CNF_PWR_CTL_1 0x48 |
| 22 | #define CNF_PWR_CTL_2 0x49 |
| 23 | #define CNF_PWR_CTL_3 0x4a |
| 24 | #define CNF_CARD_DETECT_MODE 0x4c |
| 25 | #define CNF_SD_SLOT 0x50 |
| 26 | #define CNF_EXT_GCLK_CTL_1 0xf0 |
| 27 | #define CNF_EXT_GCLK_CTL_2 0xf1 |
| 28 | #define CNF_EXT_GCLK_CTL_3 0xf9 |
| 29 | #define CNF_SD_LED_EN_1 0xfa |
| 30 | #define CNF_SD_LED_EN_2 0xfe |
| 31 | |
| 32 | #define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/ |
| 33 | |
| 34 | #define CTL_SD_CMD 0x00 |
| 35 | #define CTL_ARG_REG 0x04 |
| 36 | #define CTL_STOP_INTERNAL_ACTION 0x08 |
| 37 | #define CTL_XFER_BLK_COUNT 0xa |
| 38 | #define CTL_RESPONSE 0x0c |
| 39 | #define CTL_STATUS 0x1c |
| 40 | #define CTL_IRQ_MASK 0x20 |
| 41 | #define CTL_SD_CARD_CLK_CTL 0x24 |
| 42 | #define CTL_SD_XFER_LEN 0x26 |
| 43 | #define CTL_SD_MEM_CARD_OPT 0x28 |
| 44 | #define CTL_SD_ERROR_DETAIL_STATUS 0x2c |
| 45 | #define CTL_SD_DATA_PORT 0x30 |
| 46 | #define CTL_TRANSACTION_CTL 0x34 |
| 47 | #define CTL_RESET_SD 0xe0 |
| 48 | #define CTL_SDIO_REGS 0x100 |
| 49 | #define CTL_CLK_AND_WAIT_CTL 0x138 |
| 50 | #define CTL_RESET_SDIO 0x1e0 |
| 51 | |
| 52 | /* Definitions for values the CTRL_STATUS register can take. */ |
| 53 | #define TMIO_STAT_CMDRESPEND 0x00000001 |
| 54 | #define TMIO_STAT_DATAEND 0x00000004 |
| 55 | #define TMIO_STAT_CARD_REMOVE 0x00000008 |
| 56 | #define TMIO_STAT_CARD_INSERT 0x00000010 |
| 57 | #define TMIO_STAT_SIGSTATE 0x00000020 |
| 58 | #define TMIO_STAT_WRPROTECT 0x00000080 |
| 59 | #define TMIO_STAT_CARD_REMOVE_A 0x00000100 |
| 60 | #define TMIO_STAT_CARD_INSERT_A 0x00000200 |
| 61 | #define TMIO_STAT_SIGSTATE_A 0x00000400 |
| 62 | #define TMIO_STAT_CMD_IDX_ERR 0x00010000 |
| 63 | #define TMIO_STAT_CRCFAIL 0x00020000 |
| 64 | #define TMIO_STAT_STOPBIT_ERR 0x00040000 |
| 65 | #define TMIO_STAT_DATATIMEOUT 0x00080000 |
| 66 | #define TMIO_STAT_RXOVERFLOW 0x00100000 |
| 67 | #define TMIO_STAT_TXUNDERRUN 0x00200000 |
| 68 | #define TMIO_STAT_CMDTIMEOUT 0x00400000 |
| 69 | #define TMIO_STAT_RXRDY 0x01000000 |
| 70 | #define TMIO_STAT_TXRQ 0x02000000 |
| 71 | #define TMIO_STAT_ILL_FUNC 0x20000000 |
| 72 | #define TMIO_STAT_CMD_BUSY 0x40000000 |
| 73 | #define TMIO_STAT_ILL_ACCESS 0x80000000 |
| 74 | |
| 75 | /* Define some IRQ masks */ |
| 76 | /* This is the mask used at reset by the chip */ |
| 77 | #define TMIO_MASK_ALL 0x837f031d |
| 78 | #define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND | \ |
| 79 | TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) |
| 80 | #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND | \ |
| 81 | TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) |
| 82 | #define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \ |
| 83 | TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) |
| 84 | #define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD) |
| 85 | |
| 86 | #define enable_mmc_irqs(ctl, i) \ |
| 87 | do { \ |
| 88 | u32 mask;\ |
| 89 | mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \ |
| 90 | mask &= ~((i) & TMIO_MASK_IRQ); \ |
| 91 | tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \ |
| 92 | } while (0) |
| 93 | |
| 94 | #define disable_mmc_irqs(ctl, i) \ |
| 95 | do { \ |
| 96 | u32 mask;\ |
| 97 | mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \ |
| 98 | mask |= ((i) & TMIO_MASK_IRQ); \ |
| 99 | tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \ |
| 100 | } while (0) |
| 101 | |
| 102 | #define ack_mmc_irqs(ctl, i) \ |
| 103 | do { \ |
| 104 | u32 mask;\ |
| 105 | mask = tmio_ioread32((ctl) + CTL_STATUS); \ |
| 106 | mask &= ~((i) & TMIO_MASK_IRQ); \ |
| 107 | tmio_iowrite32(mask, (ctl) + CTL_STATUS); \ |
| 108 | } while (0) |
| 109 | |
| 110 | |
| 111 | struct tmio_mmc_host { |
| 112 | void __iomem *cnf; |
| 113 | void __iomem *ctl; |
| 114 | struct mmc_command *cmd; |
| 115 | struct mmc_request *mrq; |
| 116 | struct mmc_data *data; |
| 117 | struct mmc_host *mmc; |
| 118 | int irq; |
| 119 | |
| 120 | /* pio related stuff */ |
| 121 | struct scatterlist *sg_ptr; |
| 122 | unsigned int sg_len; |
| 123 | unsigned int sg_off; |
| 124 | }; |
| 125 | |
| 126 | #include <linux/scatterlist.h> |
| 127 | #include <linux/blkdev.h> |
| 128 | |
| 129 | static inline void tmio_mmc_init_sg(struct tmio_mmc_host *host, |
| 130 | struct mmc_data *data) |
| 131 | { |
| 132 | host->sg_len = data->sg_len; |
| 133 | host->sg_ptr = data->sg; |
| 134 | host->sg_off = 0; |
| 135 | } |
| 136 | |
| 137 | static inline int tmio_mmc_next_sg(struct tmio_mmc_host *host) |
| 138 | { |
| 139 | host->sg_ptr = sg_next(host->sg_ptr); |
| 140 | host->sg_off = 0; |
| 141 | return --host->sg_len; |
| 142 | } |
| 143 | |
| 144 | static inline char *tmio_mmc_kmap_atomic(struct tmio_mmc_host *host, |
| 145 | unsigned long *flags) |
| 146 | { |
| 147 | struct scatterlist *sg = host->sg_ptr; |
| 148 | |
| 149 | local_irq_save(*flags); |
| 150 | return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; |
| 151 | } |
| 152 | |
| 153 | static inline void tmio_mmc_kunmap_atomic(struct tmio_mmc_host *host, |
| 154 | unsigned long *flags) |
| 155 | { |
| 156 | kunmap_atomic(sg_page(host->sg_ptr), KM_BIO_SRC_IRQ); |
| 157 | local_irq_restore(*flags); |
| 158 | } |
| 159 | |
| 160 | #ifdef CONFIG_MMC_DEBUG |
| 161 | |
| 162 | #define STATUS_TO_TEXT(a) \ |
| 163 | do { \ |
| 164 | if (status & TMIO_STAT_##a) \ |
Dmitry Baryshkov | fe246eb | 2008-09-03 19:33:30 +0400 | [diff] [blame] | 165 | printk(#a); \ |
Ian Molton | 4a48998 | 2008-07-15 16:02:21 +0100 | [diff] [blame] | 166 | } while (0) |
| 167 | |
Dmitry Baryshkov | fe246eb | 2008-09-03 19:33:30 +0400 | [diff] [blame] | 168 | void pr_debug_status(u32 status) |
Ian Molton | 4a48998 | 2008-07-15 16:02:21 +0100 | [diff] [blame] | 169 | { |
| 170 | printk(KERN_DEBUG "status: %08x = ", status); |
| 171 | STATUS_TO_TEXT(CARD_REMOVE); |
| 172 | STATUS_TO_TEXT(CARD_INSERT); |
| 173 | STATUS_TO_TEXT(SIGSTATE); |
| 174 | STATUS_TO_TEXT(WRPROTECT); |
| 175 | STATUS_TO_TEXT(CARD_REMOVE_A); |
| 176 | STATUS_TO_TEXT(CARD_INSERT_A); |
| 177 | STATUS_TO_TEXT(SIGSTATE_A); |
| 178 | STATUS_TO_TEXT(CMD_IDX_ERR); |
| 179 | STATUS_TO_TEXT(STOPBIT_ERR); |
| 180 | STATUS_TO_TEXT(ILL_FUNC); |
| 181 | STATUS_TO_TEXT(CMD_BUSY); |
| 182 | STATUS_TO_TEXT(CMDRESPEND); |
| 183 | STATUS_TO_TEXT(DATAEND); |
| 184 | STATUS_TO_TEXT(CRCFAIL); |
| 185 | STATUS_TO_TEXT(DATATIMEOUT); |
| 186 | STATUS_TO_TEXT(CMDTIMEOUT); |
| 187 | STATUS_TO_TEXT(RXOVERFLOW); |
| 188 | STATUS_TO_TEXT(TXUNDERRUN); |
| 189 | STATUS_TO_TEXT(RXRDY); |
| 190 | STATUS_TO_TEXT(TXRQ); |
| 191 | STATUS_TO_TEXT(ILL_ACCESS); |
| 192 | printk("\n"); |
| 193 | } |
| 194 | |
| 195 | #else |
| 196 | #define pr_debug_status(s) do { } while (0) |
| 197 | #endif |