diff options
Diffstat (limited to 'drivers/mmc/host/tmio_mmc.h')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h new file mode 100644 index 000000000000..9e647a06054f --- /dev/null +++ b/drivers/mmc/host/tmio_mmc.h @@ -0,0 +1,194 @@ +/* Definitons for use with the tmio_mmc.c + * + * (c) 2004 Ian Molton <spyro@f2s.com> + * (c) 2007 Ian Molton <spyro@f2s.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ +#define CNF_CMD 0x04 +#define CNF_CTL_BASE 0x10 +#define CNF_INT_PIN 0x3d +#define CNF_STOP_CLK_CTL 0x40 +#define CNF_GCLK_CTL 0x41 +#define CNF_SD_CLK_MODE 0x42 +#define CNF_PIN_STATUS 0x44 +#define CNF_PWR_CTL_1 0x48 +#define CNF_PWR_CTL_2 0x49 +#define CNF_PWR_CTL_3 0x4a +#define CNF_CARD_DETECT_MODE 0x4c +#define CNF_SD_SLOT 0x50 +#define CNF_EXT_GCLK_CTL_1 0xf0 +#define CNF_EXT_GCLK_CTL_2 0xf1 +#define CNF_EXT_GCLK_CTL_3 0xf9 +#define CNF_SD_LED_EN_1 0xfa +#define CNF_SD_LED_EN_2 0xfe + +#define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/ + +#define CTL_SD_CMD 0x00 +#define CTL_ARG_REG 0x04 +#define CTL_STOP_INTERNAL_ACTION 0x08 +#define CTL_XFER_BLK_COUNT 0xa +#define CTL_RESPONSE 0x0c +#define CTL_STATUS 0x1c +#define CTL_IRQ_MASK 0x20 +#define CTL_SD_CARD_CLK_CTL 0x24 +#define CTL_SD_XFER_LEN 0x26 +#define CTL_SD_MEM_CARD_OPT 0x28 +#define CTL_SD_ERROR_DETAIL_STATUS 0x2c +#define CTL_SD_DATA_PORT 0x30 +#define CTL_TRANSACTION_CTL 0x34 +#define CTL_RESET_SD 0xe0 +#define CTL_SDIO_REGS 0x100 +#define CTL_CLK_AND_WAIT_CTL 0x138 +#define CTL_RESET_SDIO 0x1e0 + +/* Definitions for values the CTRL_STATUS register can take. */ +#define TMIO_STAT_CMDRESPEND 0x00000001 +#define TMIO_STAT_DATAEND 0x00000004 +#define TMIO_STAT_CARD_REMOVE 0x00000008 +#define TMIO_STAT_CARD_INSERT 0x00000010 +#define TMIO_STAT_SIGSTATE 0x00000020 +#define TMIO_STAT_WRPROTECT 0x00000080 +#define TMIO_STAT_CARD_REMOVE_A 0x00000100 +#define TMIO_STAT_CARD_INSERT_A 0x00000200 +#define TMIO_STAT_SIGSTATE_A 0x00000400 +#define TMIO_STAT_CMD_IDX_ERR 0x00010000 +#define TMIO_STAT_CRCFAIL 0x00020000 +#define TMIO_STAT_STOPBIT_ERR 0x00040000 +#define TMIO_STAT_DATATIMEOUT 0x00080000 +#define TMIO_STAT_RXOVERFLOW 0x00100000 +#define TMIO_STAT_TXUNDERRUN 0x00200000 +#define TMIO_STAT_CMDTIMEOUT 0x00400000 +#define TMIO_STAT_RXRDY 0x01000000 +#define TMIO_STAT_TXRQ 0x02000000 +#define TMIO_STAT_ILL_FUNC 0x20000000 +#define TMIO_STAT_CMD_BUSY 0x40000000 +#define TMIO_STAT_ILL_ACCESS 0x80000000 + +/* Define some IRQ masks */ +/* This is the mask used at reset by the chip */ +#define TMIO_MASK_ALL 0x837f031d +#define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND | \ + TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) +#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND | \ + TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) +#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \ + TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) +#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD) + +#define enable_mmc_irqs(ctl, i) \ + do { \ + u32 mask;\ + mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \ + mask &= ~((i) & TMIO_MASK_IRQ); \ + tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \ + } while (0) + +#define disable_mmc_irqs(ctl, i) \ + do { \ + u32 mask;\ + mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \ + mask |= ((i) & TMIO_MASK_IRQ); \ + tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \ + } while (0) + +#define ack_mmc_irqs(ctl, i) \ + do { \ + u32 mask;\ + mask = tmio_ioread32((ctl) + CTL_STATUS); \ + mask &= ~((i) & TMIO_MASK_IRQ); \ + tmio_iowrite32(mask, (ctl) + CTL_STATUS); \ + } while (0) + + +struct tmio_mmc_host { + void __iomem *cnf; + void __iomem *ctl; + struct mmc_command *cmd; + struct mmc_request *mrq; + struct mmc_data *data; + struct mmc_host *mmc; + int irq; + + /* pio related stuff */ + struct scatterlist *sg_ptr; + unsigned int sg_len; + unsigned int sg_off; +}; + +#include <linux/scatterlist.h> +#include <linux/blkdev.h> + +static inline void tmio_mmc_init_sg(struct tmio_mmc_host *host, + struct mmc_data *data) +{ + host->sg_len = data->sg_len; + host->sg_ptr = data->sg; + host->sg_off = 0; +} + +static inline int tmio_mmc_next_sg(struct tmio_mmc_host *host) +{ + host->sg_ptr = sg_next(host->sg_ptr); + host->sg_off = 0; + return --host->sg_len; +} + +static inline char *tmio_mmc_kmap_atomic(struct tmio_mmc_host *host, + unsigned long *flags) +{ + struct scatterlist *sg = host->sg_ptr; + + local_irq_save(*flags); + return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; +} + +static inline void tmio_mmc_kunmap_atomic(struct tmio_mmc_host *host, + unsigned long *flags) +{ + kunmap_atomic(sg_page(host->sg_ptr), KM_BIO_SRC_IRQ); + local_irq_restore(*flags); +} + +#ifdef CONFIG_MMC_DEBUG + +#define STATUS_TO_TEXT(a) \ + do { \ + if (status & TMIO_STAT_##a) \ + printf(#a); \ + } while (0) + +void debug_status(u32 status) +{ + printk(KERN_DEBUG "status: %08x = ", status); + STATUS_TO_TEXT(CARD_REMOVE); + STATUS_TO_TEXT(CARD_INSERT); + STATUS_TO_TEXT(SIGSTATE); + STATUS_TO_TEXT(WRPROTECT); + STATUS_TO_TEXT(CARD_REMOVE_A); + STATUS_TO_TEXT(CARD_INSERT_A); + STATUS_TO_TEXT(SIGSTATE_A); + STATUS_TO_TEXT(CMD_IDX_ERR); + STATUS_TO_TEXT(STOPBIT_ERR); + STATUS_TO_TEXT(ILL_FUNC); + STATUS_TO_TEXT(CMD_BUSY); + STATUS_TO_TEXT(CMDRESPEND); + STATUS_TO_TEXT(DATAEND); + STATUS_TO_TEXT(CRCFAIL); + STATUS_TO_TEXT(DATATIMEOUT); + STATUS_TO_TEXT(CMDTIMEOUT); + STATUS_TO_TEXT(RXOVERFLOW); + STATUS_TO_TEXT(TXUNDERRUN); + STATUS_TO_TEXT(RXRDY); + STATUS_TO_TEXT(TXRQ); + STATUS_TO_TEXT(ILL_ACCESS); + printk("\n"); +} + +#else +#define pr_debug_status(s) do { } while (0) +#endif |