1b6147490SGuennadi Liakhovetski /* 2b6147490SGuennadi Liakhovetski * linux/drivers/mmc/host/tmio_mmc.h 3b6147490SGuennadi Liakhovetski * 4b6147490SGuennadi Liakhovetski * Copyright (C) 2007 Ian Molton 5b6147490SGuennadi Liakhovetski * Copyright (C) 2004 Ian Molton 6b6147490SGuennadi Liakhovetski * 7b6147490SGuennadi Liakhovetski * This program is free software; you can redistribute it and/or modify 8b6147490SGuennadi Liakhovetski * it under the terms of the GNU General Public License version 2 as 9b6147490SGuennadi Liakhovetski * published by the Free Software Foundation. 10b6147490SGuennadi Liakhovetski * 11b6147490SGuennadi Liakhovetski * Driver for the MMC / SD / SDIO cell found in: 12b6147490SGuennadi Liakhovetski * 13b6147490SGuennadi Liakhovetski * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 14b6147490SGuennadi Liakhovetski */ 15b6147490SGuennadi Liakhovetski 16b6147490SGuennadi Liakhovetski #ifndef TMIO_MMC_H 17b6147490SGuennadi Liakhovetski #define TMIO_MMC_H 18b6147490SGuennadi Liakhovetski 19b6147490SGuennadi Liakhovetski #include <linux/highmem.h> 20cba179aeSSimon Horman #include <linux/mmc/tmio.h> 21b9269fddSGuennadi Liakhovetski #include <linux/mutex.h> 22b6147490SGuennadi Liakhovetski #include <linux/pagemap.h> 236c0cbef6SRafael J. Wysocki #include <linux/scatterlist.h> 24e3de2be7SGuennadi Liakhovetski #include <linux/spinlock.h> 25b6147490SGuennadi Liakhovetski 26b6147490SGuennadi Liakhovetski /* Definitions for values the CTRL_SDIO_STATUS register can take. */ 27b6147490SGuennadi Liakhovetski #define TMIO_SDIO_STAT_IOIRQ 0x0001 28b6147490SGuennadi Liakhovetski #define TMIO_SDIO_STAT_EXPUB52 0x4000 29b6147490SGuennadi Liakhovetski #define TMIO_SDIO_STAT_EXWT 0x8000 30b6147490SGuennadi Liakhovetski #define TMIO_SDIO_MASK_ALL 0xc007 31b6147490SGuennadi Liakhovetski 32b6147490SGuennadi Liakhovetski /* Define some IRQ masks */ 33b6147490SGuennadi Liakhovetski /* This is the mask used at reset by the chip */ 34b6147490SGuennadi Liakhovetski #define TMIO_MASK_ALL 0x837f031d 35b6147490SGuennadi Liakhovetski #define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND) 36b6147490SGuennadi Liakhovetski #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND) 37b6147490SGuennadi Liakhovetski #define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \ 38b6147490SGuennadi Liakhovetski TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) 39b6147490SGuennadi Liakhovetski #define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD) 40b6147490SGuennadi Liakhovetski 41b6147490SGuennadi Liakhovetski struct tmio_mmc_data; 42b6147490SGuennadi Liakhovetski 437ecc09baSKuninori Morimoto struct tmio_mmc_dma { 447ecc09baSKuninori Morimoto void *chan_priv_tx; 457ecc09baSKuninori Morimoto void *chan_priv_rx; 467ecc09baSKuninori Morimoto int slave_id_tx; 477ecc09baSKuninori Morimoto int slave_id_rx; 487ecc09baSKuninori Morimoto int alignment_shift; 497ecc09baSKuninori Morimoto dma_addr_t dma_rx_offset; 507ecc09baSKuninori Morimoto bool (*filter)(struct dma_chan *chan, void *arg); 517ecc09baSKuninori Morimoto }; 527ecc09baSKuninori Morimoto 53b6147490SGuennadi Liakhovetski struct tmio_mmc_host { 54b6147490SGuennadi Liakhovetski void __iomem *ctl; 55b6147490SGuennadi Liakhovetski struct mmc_command *cmd; 56b6147490SGuennadi Liakhovetski struct mmc_request *mrq; 57b6147490SGuennadi Liakhovetski struct mmc_data *data; 58b6147490SGuennadi Liakhovetski struct mmc_host *mmc; 59b6147490SGuennadi Liakhovetski 60b6147490SGuennadi Liakhovetski /* Callbacks for clock / power control */ 61b6147490SGuennadi Liakhovetski void (*set_pwr)(struct platform_device *host, int state); 62b6147490SGuennadi Liakhovetski void (*set_clk_div)(struct platform_device *host, int state); 63b6147490SGuennadi Liakhovetski 64b6147490SGuennadi Liakhovetski /* pio related stuff */ 65b6147490SGuennadi Liakhovetski struct scatterlist *sg_ptr; 66b6147490SGuennadi Liakhovetski struct scatterlist *sg_orig; 67b6147490SGuennadi Liakhovetski unsigned int sg_len; 68b6147490SGuennadi Liakhovetski unsigned int sg_off; 697445bf9eSKuninori Morimoto unsigned long bus_shift; 70b6147490SGuennadi Liakhovetski 71b6147490SGuennadi Liakhovetski struct platform_device *pdev; 72b6147490SGuennadi Liakhovetski struct tmio_mmc_data *pdata; 737ecc09baSKuninori Morimoto struct tmio_mmc_dma *dma; 74b6147490SGuennadi Liakhovetski 75b6147490SGuennadi Liakhovetski /* DMA support */ 76b6147490SGuennadi Liakhovetski bool force_pio; 77b6147490SGuennadi Liakhovetski struct dma_chan *chan_rx; 78b6147490SGuennadi Liakhovetski struct dma_chan *chan_tx; 79b6147490SGuennadi Liakhovetski struct tasklet_struct dma_complete; 80b6147490SGuennadi Liakhovetski struct tasklet_struct dma_issue; 81b6147490SGuennadi Liakhovetski struct scatterlist bounce_sg; 82b6147490SGuennadi Liakhovetski u8 *bounce_buf; 83b6147490SGuennadi Liakhovetski 84b6147490SGuennadi Liakhovetski /* Track lost interrupts */ 85b6147490SGuennadi Liakhovetski struct delayed_work delayed_reset_work; 86b9269fddSGuennadi Liakhovetski struct work_struct done; 87b9269fddSGuennadi Liakhovetski 88ae12d250SUlf Hansson /* Cache */ 8954680fe7SSimon Horman u32 sdcard_irq_mask; 9054680fe7SSimon Horman u32 sdio_irq_mask; 91ae12d250SUlf Hansson unsigned int clk_cache; 9254680fe7SSimon Horman 93b9269fddSGuennadi Liakhovetski spinlock_t lock; /* protect host private data */ 94b6147490SGuennadi Liakhovetski unsigned long last_req_ts; 95b9269fddSGuennadi Liakhovetski struct mutex ios_lock; /* protect set_ios() context */ 962b1ac5c2SGuennadi Liakhovetski bool native_hotplug; 977501c431SUlf Hansson bool sdio_irq_enabled; 98dfe9a229SKuninori Morimoto 99dfe9a229SKuninori Morimoto int (*write16_hook)(struct tmio_mmc_host *host, int addr); 1004fe2ec57SKuninori Morimoto int (*clk_enable)(struct platform_device *pdev, unsigned int *f); 10100452c11SKuninori Morimoto void (*clk_disable)(struct platform_device *pdev); 10285c02dddSKuninori Morimoto int (*multi_io_quirk)(struct mmc_card *card, 10385c02dddSKuninori Morimoto unsigned int direction, int blk_size); 104b6147490SGuennadi Liakhovetski }; 105b6147490SGuennadi Liakhovetski 10694b110afSKuninori Morimoto struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev); 10794b110afSKuninori Morimoto void tmio_mmc_host_free(struct tmio_mmc_host *host); 10894b110afSKuninori Morimoto int tmio_mmc_host_probe(struct tmio_mmc_host *host, 109b6147490SGuennadi Liakhovetski struct tmio_mmc_data *pdata); 110b6147490SGuennadi Liakhovetski void tmio_mmc_host_remove(struct tmio_mmc_host *host); 111b6147490SGuennadi Liakhovetski void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); 112b6147490SGuennadi Liakhovetski 113b6147490SGuennadi Liakhovetski void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); 114b6147490SGuennadi Liakhovetski void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); 1158e7bfdb3SMagnus Damm irqreturn_t tmio_mmc_irq(int irq, void *devid); 1167729c7a2SSimon Horman irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid); 1177729c7a2SSimon Horman irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid); 1187729c7a2SSimon Horman irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid); 119b6147490SGuennadi Liakhovetski 120b6147490SGuennadi Liakhovetski static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, 121b6147490SGuennadi Liakhovetski unsigned long *flags) 122b6147490SGuennadi Liakhovetski { 123b6147490SGuennadi Liakhovetski local_irq_save(*flags); 124482fce99SCong Wang return kmap_atomic(sg_page(sg)) + sg->offset; 125b6147490SGuennadi Liakhovetski } 126b6147490SGuennadi Liakhovetski 127b6147490SGuennadi Liakhovetski static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, 128b6147490SGuennadi Liakhovetski unsigned long *flags, void *virt) 129b6147490SGuennadi Liakhovetski { 130482fce99SCong Wang kunmap_atomic(virt - sg->offset); 131b6147490SGuennadi Liakhovetski local_irq_restore(*flags); 132b6147490SGuennadi Liakhovetski } 133b6147490SGuennadi Liakhovetski 13442051e8aSGuennadi Liakhovetski #if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) 135b6147490SGuennadi Liakhovetski void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); 136162f43e3SGuennadi Liakhovetski void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable); 137b6147490SGuennadi Liakhovetski void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); 138b6147490SGuennadi Liakhovetski void tmio_mmc_release_dma(struct tmio_mmc_host *host); 139e3de2be7SGuennadi Liakhovetski void tmio_mmc_abort_dma(struct tmio_mmc_host *host); 140b6147490SGuennadi Liakhovetski #else 141b6147490SGuennadi Liakhovetski static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, 142b6147490SGuennadi Liakhovetski struct mmc_data *data) 143b6147490SGuennadi Liakhovetski { 144b6147490SGuennadi Liakhovetski } 145b6147490SGuennadi Liakhovetski 146162f43e3SGuennadi Liakhovetski static inline void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) 147162f43e3SGuennadi Liakhovetski { 148162f43e3SGuennadi Liakhovetski } 149162f43e3SGuennadi Liakhovetski 150b6147490SGuennadi Liakhovetski static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, 151b6147490SGuennadi Liakhovetski struct tmio_mmc_data *pdata) 152b6147490SGuennadi Liakhovetski { 153b6147490SGuennadi Liakhovetski host->chan_tx = NULL; 154b6147490SGuennadi Liakhovetski host->chan_rx = NULL; 155b6147490SGuennadi Liakhovetski } 156b6147490SGuennadi Liakhovetski 157b6147490SGuennadi Liakhovetski static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host) 158b6147490SGuennadi Liakhovetski { 159b6147490SGuennadi Liakhovetski } 160e3de2be7SGuennadi Liakhovetski 161e3de2be7SGuennadi Liakhovetski static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host) 162e3de2be7SGuennadi Liakhovetski { 163e3de2be7SGuennadi Liakhovetski } 164b6147490SGuennadi Liakhovetski #endif 165b6147490SGuennadi Liakhovetski 1669ade7dbfSUlf Hansson #ifdef CONFIG_PM 1677311bef0SGuennadi Liakhovetski int tmio_mmc_host_runtime_suspend(struct device *dev); 1687311bef0SGuennadi Liakhovetski int tmio_mmc_host_runtime_resume(struct device *dev); 169710dec95SUlf Hansson #endif 1707311bef0SGuennadi Liakhovetski 171a11862d3SSimon Horman static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr) 172a11862d3SSimon Horman { 1737445bf9eSKuninori Morimoto return readw(host->ctl + (addr << host->bus_shift)); 174a11862d3SSimon Horman } 175a11862d3SSimon Horman 176a11862d3SSimon Horman static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr, 177a11862d3SSimon Horman u16 *buf, int count) 178a11862d3SSimon Horman { 1797445bf9eSKuninori Morimoto readsw(host->ctl + (addr << host->bus_shift), buf, count); 180a11862d3SSimon Horman } 181a11862d3SSimon Horman 182a11862d3SSimon Horman static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr) 183a11862d3SSimon Horman { 1847445bf9eSKuninori Morimoto return readw(host->ctl + (addr << host->bus_shift)) | 1857445bf9eSKuninori Morimoto readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16; 186a11862d3SSimon Horman } 187a11862d3SSimon Horman 188a11862d3SSimon Horman static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val) 189a11862d3SSimon Horman { 190973ed3afSSimon Horman /* If there is a hook and it returns non-zero then there 191973ed3afSSimon Horman * is an error and the write should be skipped 192973ed3afSSimon Horman */ 193dfe9a229SKuninori Morimoto if (host->write16_hook && host->write16_hook(host, addr)) 194973ed3afSSimon Horman return; 1957445bf9eSKuninori Morimoto writew(val, host->ctl + (addr << host->bus_shift)); 196a11862d3SSimon Horman } 197a11862d3SSimon Horman 198a11862d3SSimon Horman static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr, 199a11862d3SSimon Horman u16 *buf, int count) 200a11862d3SSimon Horman { 2017445bf9eSKuninori Morimoto writesw(host->ctl + (addr << host->bus_shift), buf, count); 202a11862d3SSimon Horman } 203a11862d3SSimon Horman 204a11862d3SSimon Horman static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val) 205a11862d3SSimon Horman { 2067445bf9eSKuninori Morimoto writew(val, host->ctl + (addr << host->bus_shift)); 2077445bf9eSKuninori Morimoto writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift)); 208a11862d3SSimon Horman } 209a11862d3SSimon Horman 210a11862d3SSimon Horman 211b6147490SGuennadi Liakhovetski #endif 212