| /* |
| * linux/drivers/mmc/host/tmio_mmc.h |
| * |
| * Copyright (C) 2007 Ian Molton |
| * Copyright (C) 2004 Ian Molton |
| * |
| * 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. |
| * |
| * Driver for the MMC / SD / SDIO cell found in: |
| * |
| * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 |
| */ |
| |
| #ifndef TMIO_MMC_H |
| #define TMIO_MMC_H |
| |
| #include <linux/highmem.h> |
| #include <linux/pagemap.h> |
| |
| /* 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 |
| |
| /* Definitions for values the CTRL_SDIO_STATUS register can take. */ |
| #define TMIO_SDIO_STAT_IOIRQ 0x0001 |
| #define TMIO_SDIO_STAT_EXPUB52 0x4000 |
| #define TMIO_SDIO_STAT_EXWT 0x8000 |
| #define TMIO_SDIO_MASK_ALL 0xc007 |
| |
| /* 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) |
| #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND) |
| #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) |
| |
| struct tmio_mmc_data; |
| |
| struct tmio_mmc_host { |
| void __iomem *ctl; |
| unsigned long bus_shift; |
| struct mmc_command *cmd; |
| struct mmc_request *mrq; |
| struct mmc_data *data; |
| struct mmc_host *mmc; |
| int irq; |
| unsigned int sdio_irq_enabled; |
| |
| /* Callbacks for clock / power control */ |
| void (*set_pwr)(struct platform_device *host, int state); |
| void (*set_clk_div)(struct platform_device *host, int state); |
| |
| /* pio related stuff */ |
| struct scatterlist *sg_ptr; |
| struct scatterlist *sg_orig; |
| unsigned int sg_len; |
| unsigned int sg_off; |
| |
| struct platform_device *pdev; |
| struct tmio_mmc_data *pdata; |
| |
| /* DMA support */ |
| bool force_pio; |
| struct dma_chan *chan_rx; |
| struct dma_chan *chan_tx; |
| struct tasklet_struct dma_complete; |
| struct tasklet_struct dma_issue; |
| struct scatterlist bounce_sg; |
| u8 *bounce_buf; |
| |
| /* Track lost interrupts */ |
| struct delayed_work delayed_reset_work; |
| spinlock_t lock; |
| unsigned long last_req_ts; |
| }; |
| |
| int tmio_mmc_host_probe(struct tmio_mmc_host **host, |
| struct platform_device *pdev, |
| struct tmio_mmc_data *pdata); |
| void tmio_mmc_host_remove(struct tmio_mmc_host *host); |
| void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); |
| |
| void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); |
| void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); |
| |
| static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, |
| unsigned long *flags) |
| { |
| local_irq_save(*flags); |
| return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; |
| } |
| |
| static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, |
| unsigned long *flags, void *virt) |
| { |
| kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ); |
| local_irq_restore(*flags); |
| } |
| |
| #ifdef CONFIG_TMIO_MMC_DMA |
| void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); |
| void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); |
| void tmio_mmc_release_dma(struct tmio_mmc_host *host); |
| #else |
| static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, |
| struct mmc_data *data) |
| { |
| } |
| |
| static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, |
| struct tmio_mmc_data *pdata) |
| { |
| host->chan_tx = NULL; |
| host->chan_rx = NULL; |
| } |
| |
| static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host) |
| { |
| } |
| #endif |
| |
| #endif |