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   1 /*
   2  *  tifm.h - TI FlashMedia driver
   3  *
   4  *  Copyright (C) 2006 Alex Dubov <oakad@yahoo.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  */
  11
  12 #ifndef _TIFM_H
  13 #define _TIFM_H
  14
  15 #include <linux/spinlock.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/wait.h>
  18 #include <linux/delay.h>
  19 #include <linux/pci.h>
  20 #include <linux/kthread.h>
  21
  22 /* Host registers (relative to pci base address): */
  23 enum {
  24         FM_SET_INTERRUPT_ENABLE   = 0x008,
  25         FM_CLEAR_INTERRUPT_ENABLE = 0x00c,
  26         FM_INTERRUPT_STATUS       = 0x014 };
  27
  28 /* Socket registers (relative to socket base address): */
  29 enum {
  30         SOCK_CONTROL                   = 0x004,
  31         SOCK_PRESENT_STATE             = 0x008,
  32         SOCK_DMA_ADDRESS               = 0x00c,
  33         SOCK_DMA_CONTROL               = 0x010,
  34         SOCK_DMA_FIFO_INT_ENABLE_SET   = 0x014,
  35         SOCK_DMA_FIFO_INT_ENABLE_CLEAR = 0x018,
  36         SOCK_DMA_FIFO_STATUS           = 0x020,
  37         SOCK_FIFO_CONTROL              = 0x024,
  38         SOCK_FIFO_PAGE_SIZE            = 0x028,
  39         SOCK_MMCSD_COMMAND             = 0x104,
  40         SOCK_MMCSD_ARG_LOW             = 0x108,
  41         SOCK_MMCSD_ARG_HIGH            = 0x10c,
  42         SOCK_MMCSD_CONFIG              = 0x110,
  43         SOCK_MMCSD_STATUS              = 0x114,
  44         SOCK_MMCSD_INT_ENABLE          = 0x118,
  45         SOCK_MMCSD_COMMAND_TO          = 0x11c,
  46         SOCK_MMCSD_DATA_TO             = 0x120,
  47         SOCK_MMCSD_DATA                = 0x124,
  48         SOCK_MMCSD_BLOCK_LEN           = 0x128,
  49         SOCK_MMCSD_NUM_BLOCKS          = 0x12c,
  50         SOCK_MMCSD_BUFFER_CONFIG       = 0x130,
  51         SOCK_MMCSD_SPI_CONFIG          = 0x134,
  52         SOCK_MMCSD_SDIO_MODE_CONFIG    = 0x138,
  53         SOCK_MMCSD_RESPONSE            = 0x144,
  54         SOCK_MMCSD_SDIO_SR             = 0x164,
  55         SOCK_MMCSD_SYSTEM_CONTROL      = 0x168,
  56         SOCK_MMCSD_SYSTEM_STATUS       = 0x16c,
  57         SOCK_MS_COMMAND                = 0x184,
  58         SOCK_MS_DATA                   = 0x188,
  59         SOCK_MS_STATUS                 = 0x18c,
  60         SOCK_MS_SYSTEM                 = 0x190,
  61         SOCK_FIFO_ACCESS               = 0x200 };
  62
  63
  64 #define TIFM_IRQ_ENABLE           0x80000000
  65 #define TIFM_IRQ_SOCKMASK(x)      (x)
  66 #define TIFM_IRQ_CARDMASK(x)      ((x) << 8)
  67 #define TIFM_IRQ_FIFOMASK(x)      ((x) << 16)
  68 #define TIFM_IRQ_SETALL           0xffffffff
  69
  70 #define TIFM_CTRL_LED             0x00000040
  71 #define TIFM_CTRL_FAST_CLK        0x00000100
  72
  73 #define TIFM_SOCK_STATE_OCCUPIED  0x00000008
  74 #define TIFM_SOCK_STATE_POWERED   0x00000080
  75
  76 #define TIFM_FIFO_ENABLE          0x00000001 /* Meaning of this constant is unverified */
  77 #define TIFM_FIFO_INT_SETALL      0x0000ffff
  78 #define TIFM_FIFO_INTMASK         0x00000005 /* Meaning of this constant is unverified */
  79
  80 #define TIFM_DMA_RESET            0x00000002 /* Meaning of this constant is unverified */
  81 #define TIFM_DMA_TX               0x00008000 /* Meaning of this constant is unverified */
  82 #define TIFM_DMA_EN               0x00000001 /* Meaning of this constant is unverified */
  83
  84 typedef enum {FM_NULL = 0, FM_XD = 0x01, FM_MS = 0x02, FM_SD = 0x03} tifm_media_id;
  85
  86 struct tifm_driver;
  87 struct tifm_dev {
  88         char __iomem            *addr;
  89         spinlock_t              lock;
  90         tifm_media_id           media_id;
  91         unsigned int            socket_id;
  92
  93         void                    (*signal_irq)(struct tifm_dev *sock,
  94                                               unsigned int sock_irq_status);
  95
  96         struct tifm_driver      *drv;
  97         struct device           dev;
  98 };
  99
 100 struct tifm_driver {
 101         tifm_media_id        *id_table;
 102         int                  (*probe)(struct tifm_dev *dev);
 103         void                 (*remove)(struct tifm_dev *dev);
 104         int                  (*suspend)(struct tifm_dev *dev,
 105                                         pm_message_t state);
 106         int                  (*resume)(struct tifm_dev *dev);
 107
 108         struct device_driver driver;
 109 };
 110
 111 struct tifm_adapter {
 112         char __iomem            *addr;
 113         spinlock_t              lock;
 114         unsigned int            irq_status;
 115         unsigned int            socket_change_set;
 116         wait_queue_head_t       change_set_notify;
 117         unsigned int            id;
 118         unsigned int            num_sockets;
 119         struct tifm_dev         **sockets;
 120         struct task_struct      *media_switcher;
 121         struct class_device     cdev;
 122         struct device           *dev;
 123
 124         void                    (*eject)(struct tifm_adapter *fm, struct tifm_dev *sock);
 125 };
 126
 127 struct tifm_adapter *tifm_alloc_adapter(void);
 128 void tifm_free_device(struct device *dev);
 129 void tifm_free_adapter(struct tifm_adapter *fm);
 130 int tifm_add_adapter(struct tifm_adapter *fm, int (*mediathreadfn)(void *data));
 131 void tifm_remove_adapter(struct tifm_adapter *fm);
 132 struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm);
 133 int tifm_register_driver(struct tifm_driver *drv);
 134 void tifm_unregister_driver(struct tifm_driver *drv);
 135 void tifm_eject(struct tifm_dev *sock);
 136 int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
 137                 int direction);
 138 void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
 139                    int direction);
 140
 141
 142 static inline void *tifm_get_drvdata(struct tifm_dev *dev)
 143 {
 144         return dev_get_drvdata(&dev->dev);
 145 }
 146
 147 static inline void tifm_set_drvdata(struct tifm_dev *dev, void *data)
 148 {
 149         dev_set_drvdata(&dev->dev, data);
 150 }
 151
 152 struct tifm_device_id {
 153         tifm_media_id media_id;
 154 };
 155
 156 #endif