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; 69b6147490SGuennadi Liakhovetski 70b6147490SGuennadi Liakhovetski struct platform_device *pdev; 71b6147490SGuennadi Liakhovetski struct tmio_mmc_data *pdata; 727ecc09baSKuninori Morimoto struct tmio_mmc_dma *dma; 73b6147490SGuennadi Liakhovetski 74b6147490SGuennadi Liakhovetski /* DMA support */ 75b6147490SGuennadi Liakhovetski bool force_pio; 76b6147490SGuennadi Liakhovetski struct dma_chan *chan_rx; 77b6147490SGuennadi Liakhovetski struct dma_chan *chan_tx; 78b6147490SGuennadi Liakhovetski struct tasklet_struct dma_complete; 79b6147490SGuennadi Liakhovetski struct tasklet_struct dma_issue; 80b6147490SGuennadi Liakhovetski struct scatterlist bounce_sg; 81b6147490SGuennadi Liakhovetski u8 *bounce_buf; 82b6147490SGuennadi Liakhovetski 83b6147490SGuennadi Liakhovetski /* Track lost interrupts */ 84b6147490SGuennadi Liakhovetski struct delayed_work delayed_reset_work; 85b9269fddSGuennadi Liakhovetski struct work_struct done; 86b9269fddSGuennadi Liakhovetski 87ae12d250SUlf Hansson /* Cache */ 8854680fe7SSimon Horman u32 sdcard_irq_mask; 8954680fe7SSimon Horman u32 sdio_irq_mask; 90ae12d250SUlf Hansson unsigned int clk_cache; 9154680fe7SSimon Horman 92b9269fddSGuennadi Liakhovetski spinlock_t lock; /* protect host private data */ 93b6147490SGuennadi Liakhovetski unsigned long last_req_ts; 94b9269fddSGuennadi Liakhovetski struct mutex ios_lock; /* protect set_ios() context */ 952b1ac5c2SGuennadi Liakhovetski bool native_hotplug; 967501c431SUlf Hansson bool sdio_irq_enabled; 97b6147490SGuennadi Liakhovetski }; 98b6147490SGuennadi Liakhovetski 9994b110afSKuninori Morimoto struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev); 10094b110afSKuninori Morimoto void tmio_mmc_host_free(struct tmio_mmc_host *host); 10194b110afSKuninori Morimoto int tmio_mmc_host_probe(struct tmio_mmc_host *host, 102b6147490SGuennadi Liakhovetski struct tmio_mmc_data *pdata); 103b6147490SGuennadi Liakhovetski void tmio_mmc_host_remove(struct tmio_mmc_host *host); 104b6147490SGuennadi Liakhovetski void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); 105b6147490SGuennadi Liakhovetski 106b6147490SGuennadi Liakhovetski void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); 107b6147490SGuennadi Liakhovetski void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); 1088e7bfdb3SMagnus Damm irqreturn_t tmio_mmc_irq(int irq, void *devid); 1097729c7a2SSimon Horman irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid); 1107729c7a2SSimon Horman irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid); 1117729c7a2SSimon Horman irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid); 112b6147490SGuennadi Liakhovetski 113b6147490SGuennadi Liakhovetski static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, 114b6147490SGuennadi Liakhovetski unsigned long *flags) 115b6147490SGuennadi Liakhovetski { 116b6147490SGuennadi Liakhovetski local_irq_save(*flags); 117482fce99SCong Wang return kmap_atomic(sg_page(sg)) + sg->offset; 118b6147490SGuennadi Liakhovetski } 119b6147490SGuennadi Liakhovetski 120b6147490SGuennadi Liakhovetski static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, 121b6147490SGuennadi Liakhovetski unsigned long *flags, void *virt) 122b6147490SGuennadi Liakhovetski { 123482fce99SCong Wang kunmap_atomic(virt - sg->offset); 124b6147490SGuennadi Liakhovetski local_irq_restore(*flags); 125b6147490SGuennadi Liakhovetski } 126b6147490SGuennadi Liakhovetski 12742051e8aSGuennadi Liakhovetski #if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) 128b6147490SGuennadi Liakhovetski void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); 129162f43e3SGuennadi Liakhovetski void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable); 130b6147490SGuennadi Liakhovetski void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); 131b6147490SGuennadi Liakhovetski void tmio_mmc_release_dma(struct tmio_mmc_host *host); 132e3de2be7SGuennadi Liakhovetski void tmio_mmc_abort_dma(struct tmio_mmc_host *host); 133b6147490SGuennadi Liakhovetski #else 134b6147490SGuennadi Liakhovetski static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, 135b6147490SGuennadi Liakhovetski struct mmc_data *data) 136b6147490SGuennadi Liakhovetski { 137b6147490SGuennadi Liakhovetski } 138b6147490SGuennadi Liakhovetski 139162f43e3SGuennadi Liakhovetski static inline void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) 140162f43e3SGuennadi Liakhovetski { 141162f43e3SGuennadi Liakhovetski } 142162f43e3SGuennadi Liakhovetski 143b6147490SGuennadi Liakhovetski static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, 144b6147490SGuennadi Liakhovetski struct tmio_mmc_data *pdata) 145b6147490SGuennadi Liakhovetski { 146b6147490SGuennadi Liakhovetski host->chan_tx = NULL; 147b6147490SGuennadi Liakhovetski host->chan_rx = NULL; 148b6147490SGuennadi Liakhovetski } 149b6147490SGuennadi Liakhovetski 150b6147490SGuennadi Liakhovetski static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host) 151b6147490SGuennadi Liakhovetski { 152b6147490SGuennadi Liakhovetski } 153e3de2be7SGuennadi Liakhovetski 154e3de2be7SGuennadi Liakhovetski static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host) 155e3de2be7SGuennadi Liakhovetski { 156e3de2be7SGuennadi Liakhovetski } 157b6147490SGuennadi Liakhovetski #endif 158b6147490SGuennadi Liakhovetski 1599ade7dbfSUlf Hansson #ifdef CONFIG_PM 1607311bef0SGuennadi Liakhovetski int tmio_mmc_host_runtime_suspend(struct device *dev); 1617311bef0SGuennadi Liakhovetski int tmio_mmc_host_runtime_resume(struct device *dev); 162710dec95SUlf Hansson #endif 1637311bef0SGuennadi Liakhovetski 164a11862d3SSimon Horman static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr) 165a11862d3SSimon Horman { 1663b159a6eSKuninori Morimoto return readw(host->ctl + (addr << host->pdata->bus_shift)); 167a11862d3SSimon Horman } 168a11862d3SSimon Horman 169a11862d3SSimon Horman static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr, 170a11862d3SSimon Horman u16 *buf, int count) 171a11862d3SSimon Horman { 1723b159a6eSKuninori Morimoto readsw(host->ctl + (addr << host->pdata->bus_shift), buf, count); 173a11862d3SSimon Horman } 174a11862d3SSimon Horman 175a11862d3SSimon Horman static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr) 176a11862d3SSimon Horman { 1773b159a6eSKuninori Morimoto return readw(host->ctl + (addr << host->pdata->bus_shift)) | 1783b159a6eSKuninori Morimoto readw(host->ctl + ((addr + 2) << host->pdata->bus_shift)) << 16; 179a11862d3SSimon Horman } 180a11862d3SSimon Horman 181a11862d3SSimon Horman static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val) 182a11862d3SSimon Horman { 183973ed3afSSimon Horman /* If there is a hook and it returns non-zero then there 184973ed3afSSimon Horman * is an error and the write should be skipped 185973ed3afSSimon Horman */ 186973ed3afSSimon Horman if (host->pdata->write16_hook && host->pdata->write16_hook(host, addr)) 187973ed3afSSimon Horman return; 1883b159a6eSKuninori Morimoto writew(val, host->ctl + (addr << host->pdata->bus_shift)); 189a11862d3SSimon Horman } 190a11862d3SSimon Horman 191a11862d3SSimon Horman static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr, 192a11862d3SSimon Horman u16 *buf, int count) 193a11862d3SSimon Horman { 1943b159a6eSKuninori Morimoto writesw(host->ctl + (addr << host->pdata->bus_shift), buf, count); 195a11862d3SSimon Horman } 196a11862d3SSimon Horman 197a11862d3SSimon Horman static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val) 198a11862d3SSimon Horman { 1993b159a6eSKuninori Morimoto writew(val, host->ctl + (addr << host->pdata->bus_shift)); 2003b159a6eSKuninori Morimoto writew(val >> 16, host->ctl + ((addr + 2) << host->pdata->bus_shift)); 201a11862d3SSimon Horman } 202a11862d3SSimon Horman 203a11862d3SSimon Horman 204b6147490SGuennadi Liakhovetski #endif 205