linux/include/linux/memstick.h
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   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  Sony MemoryStick support
   4 *
   5 *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   6 */
   7
   8#ifndef _MEMSTICK_H
   9#define _MEMSTICK_H
  10
  11#include <linux/workqueue.h>
  12#include <linux/scatterlist.h>
  13#include <linux/device.h>
  14
  15/*** Hardware based structures ***/
  16
  17struct ms_status_register {
  18        unsigned char reserved;
  19        unsigned char interrupt;
  20#define MEMSTICK_INT_CMDNAK 0x01
  21#define MEMSTICK_INT_IOREQ  0x08
  22#define MEMSTICK_INT_IOBREQ 0x10
  23#define MEMSTICK_INT_BREQ   0x20
  24#define MEMSTICK_INT_ERR    0x40
  25#define MEMSTICK_INT_CED    0x80
  26
  27        unsigned char status0;
  28#define MEMSTICK_STATUS0_WP  0x01
  29#define MEMSTICK_STATUS0_SL  0x02
  30#define MEMSTICK_STATUS0_BF  0x10
  31#define MEMSTICK_STATUS0_BE  0x20
  32#define MEMSTICK_STATUS0_FB0 0x40
  33#define MEMSTICK_STATUS0_MB  0x80
  34
  35        unsigned char status1;
  36#define MEMSTICK_STATUS1_UCFG 0x01
  37#define MEMSTICK_STATUS1_FGER 0x02
  38#define MEMSTICK_STATUS1_UCEX 0x04
  39#define MEMSTICK_STATUS1_EXER 0x08
  40#define MEMSTICK_STATUS1_UCDT 0x10
  41#define MEMSTICK_STATUS1_DTER 0x20
  42#define MEMSTICK_STATUS1_FB1  0x40
  43#define MEMSTICK_STATUS1_MB   0x80
  44} __attribute__((packed));
  45
  46struct ms_id_register {
  47        unsigned char type;
  48        unsigned char if_mode;
  49        unsigned char category;
  50        unsigned char class;
  51} __attribute__((packed));
  52
  53struct ms_param_register {
  54        unsigned char system;
  55#define MEMSTICK_SYS_PAM  0x08
  56#define MEMSTICK_SYS_BAMD 0x80
  57
  58        unsigned char block_address_msb;
  59        unsigned short block_address;
  60        unsigned char cp;
  61#define MEMSTICK_CP_BLOCK     0x00
  62#define MEMSTICK_CP_PAGE      0x20
  63#define MEMSTICK_CP_EXTRA     0x40
  64#define MEMSTICK_CP_OVERWRITE 0x80
  65
  66        unsigned char page_address;
  67} __attribute__((packed));
  68
  69struct ms_extra_data_register {
  70        unsigned char  overwrite_flag;
  71#define MEMSTICK_OVERWRITE_UDST  0x10
  72#define MEMSTICK_OVERWRITE_PGST1 0x20
  73#define MEMSTICK_OVERWRITE_PGST0 0x40
  74#define MEMSTICK_OVERWRITE_BKST  0x80
  75
  76        unsigned char  management_flag;
  77#define MEMSTICK_MANAGEMENT_SYSFLG 0x04
  78#define MEMSTICK_MANAGEMENT_ATFLG  0x08
  79#define MEMSTICK_MANAGEMENT_SCMS1  0x10
  80#define MEMSTICK_MANAGEMENT_SCMS0  0x20
  81
  82        unsigned short logical_address;
  83} __attribute__((packed));
  84
  85struct ms_register {
  86        struct ms_status_register     status;
  87        struct ms_id_register         id;
  88        unsigned char                 reserved[8];
  89        struct ms_param_register      param;
  90        struct ms_extra_data_register extra_data;
  91} __attribute__((packed));
  92
  93struct mspro_param_register {
  94        unsigned char  system;
  95#define MEMSTICK_SYS_PAR4   0x00
  96#define MEMSTICK_SYS_PAR8   0x40
  97#define MEMSTICK_SYS_SERIAL 0x80
  98
  99        __be16 data_count;
 100        __be32 data_address;
 101        unsigned char  tpc_param;
 102} __attribute__((packed));
 103
 104struct mspro_io_info_register {
 105        unsigned char version;
 106        unsigned char io_category;
 107        unsigned char current_req;
 108        unsigned char card_opt_info;
 109        unsigned char rdy_wait_time;
 110} __attribute__((packed));
 111
 112struct mspro_io_func_register {
 113        unsigned char func_enable;
 114        unsigned char func_select;
 115        unsigned char func_intmask;
 116        unsigned char transfer_mode;
 117} __attribute__((packed));
 118
 119struct mspro_io_cmd_register {
 120        unsigned short tpc_param;
 121        unsigned short data_count;
 122        unsigned int   data_address;
 123} __attribute__((packed));
 124
 125struct mspro_register {
 126        struct ms_status_register     status;
 127        struct ms_id_register         id;
 128        unsigned char                 reserved0[8];
 129        struct mspro_param_register   param;
 130        unsigned char                 reserved1[8];
 131        struct mspro_io_info_register io_info;
 132        struct mspro_io_func_register io_func;
 133        unsigned char                 reserved2[7];
 134        struct mspro_io_cmd_register  io_cmd;
 135        unsigned char                 io_int;
 136        unsigned char                 io_int_func;
 137} __attribute__((packed));
 138
 139struct ms_register_addr {
 140        unsigned char r_offset;
 141        unsigned char r_length;
 142        unsigned char w_offset;
 143        unsigned char w_length;
 144} __attribute__((packed));
 145
 146enum memstick_tpc {
 147        MS_TPC_READ_MG_STATUS   = 0x01,
 148        MS_TPC_READ_LONG_DATA   = 0x02,
 149        MS_TPC_READ_SHORT_DATA  = 0x03,
 150        MS_TPC_READ_MG_DATA     = 0x03,
 151        MS_TPC_READ_REG         = 0x04,
 152        MS_TPC_READ_QUAD_DATA   = 0x05,
 153        MS_TPC_READ_IO_DATA     = 0x05,
 154        MS_TPC_GET_INT          = 0x07,
 155        MS_TPC_SET_RW_REG_ADRS  = 0x08,
 156        MS_TPC_EX_SET_CMD       = 0x09,
 157        MS_TPC_WRITE_QUAD_DATA  = 0x0a,
 158        MS_TPC_WRITE_IO_DATA    = 0x0a,
 159        MS_TPC_WRITE_REG        = 0x0b,
 160        MS_TPC_WRITE_SHORT_DATA = 0x0c,
 161        MS_TPC_WRITE_MG_DATA    = 0x0c,
 162        MS_TPC_WRITE_LONG_DATA  = 0x0d,
 163        MS_TPC_SET_CMD          = 0x0e
 164};
 165
 166enum memstick_command {
 167        MS_CMD_BLOCK_END       = 0x33,
 168        MS_CMD_RESET           = 0x3c,
 169        MS_CMD_BLOCK_WRITE     = 0x55,
 170        MS_CMD_SLEEP           = 0x5a,
 171        MS_CMD_BLOCK_ERASE     = 0x99,
 172        MS_CMD_BLOCK_READ      = 0xaa,
 173        MS_CMD_CLEAR_BUF       = 0xc3,
 174        MS_CMD_FLASH_STOP      = 0xcc,
 175        MS_CMD_LOAD_ID         = 0x60,
 176        MS_CMD_CMP_ICV         = 0x7f,
 177        MSPRO_CMD_FORMAT       = 0x10,
 178        MSPRO_CMD_SLEEP        = 0x11,
 179        MSPRO_CMD_WAKEUP       = 0x12,
 180        MSPRO_CMD_READ_DATA    = 0x20,
 181        MSPRO_CMD_WRITE_DATA   = 0x21,
 182        MSPRO_CMD_READ_ATRB    = 0x24,
 183        MSPRO_CMD_STOP         = 0x25,
 184        MSPRO_CMD_ERASE        = 0x26,
 185        MSPRO_CMD_READ_QUAD    = 0x27,
 186        MSPRO_CMD_WRITE_QUAD   = 0x28,
 187        MSPRO_CMD_SET_IBD      = 0x46,
 188        MSPRO_CMD_GET_IBD      = 0x47,
 189        MSPRO_CMD_IN_IO_DATA   = 0xb0,
 190        MSPRO_CMD_OUT_IO_DATA  = 0xb1,
 191        MSPRO_CMD_READ_IO_ATRB = 0xb2,
 192        MSPRO_CMD_IN_IO_FIFO   = 0xb3,
 193        MSPRO_CMD_OUT_IO_FIFO  = 0xb4,
 194        MSPRO_CMD_IN_IOM       = 0xb5,
 195        MSPRO_CMD_OUT_IOM      = 0xb6,
 196};
 197
 198/*** Driver structures and functions ***/
 199
 200enum memstick_param { MEMSTICK_POWER = 1, MEMSTICK_INTERFACE };
 201
 202#define MEMSTICK_POWER_OFF 0
 203#define MEMSTICK_POWER_ON  1
 204
 205#define MEMSTICK_SERIAL   0
 206#define MEMSTICK_PAR4     1
 207#define MEMSTICK_PAR8     2
 208
 209struct memstick_host;
 210struct memstick_driver;
 211
 212struct memstick_device_id {
 213        unsigned char match_flags;
 214#define MEMSTICK_MATCH_ALL            0x01
 215
 216        unsigned char type;
 217#define MEMSTICK_TYPE_LEGACY          0xff
 218#define MEMSTICK_TYPE_DUO             0x00
 219#define MEMSTICK_TYPE_PRO             0x01
 220
 221        unsigned char category;
 222#define MEMSTICK_CATEGORY_STORAGE     0xff
 223#define MEMSTICK_CATEGORY_STORAGE_DUO 0x00
 224#define MEMSTICK_CATEGORY_IO          0x01
 225#define MEMSTICK_CATEGORY_IO_PRO      0x10
 226
 227        unsigned char class;
 228#define MEMSTICK_CLASS_FLASH          0xff
 229#define MEMSTICK_CLASS_DUO            0x00
 230#define MEMSTICK_CLASS_ROM            0x01
 231#define MEMSTICK_CLASS_RO             0x02
 232#define MEMSTICK_CLASS_WP             0x03
 233};
 234
 235struct memstick_request {
 236        unsigned char tpc;
 237        unsigned char data_dir:1,
 238                      need_card_int:1,
 239                      long_data:1;
 240        unsigned char int_reg;
 241        int           error;
 242        union {
 243                struct scatterlist sg;
 244                struct {
 245                        unsigned char data_len;
 246                        unsigned char data[15];
 247                };
 248        };
 249};
 250
 251struct memstick_dev {
 252        struct memstick_device_id id;
 253        struct memstick_host     *host;
 254        struct ms_register_addr  reg_addr;
 255        struct completion        mrq_complete;
 256        struct memstick_request  current_mrq;
 257
 258        /* Check that media driver is still willing to operate the device. */
 259        int                      (*check)(struct memstick_dev *card);
 260        /* Get next request from the media driver.                         */
 261        int                      (*next_request)(struct memstick_dev *card,
 262                                                 struct memstick_request **mrq);
 263        /* Tell the media driver to stop doing things                      */
 264        void                     (*stop)(struct memstick_dev *card);
 265        /* Allow the media driver to continue                              */
 266        void                     (*start)(struct memstick_dev *card);
 267
 268        struct device            dev;
 269};
 270
 271struct memstick_host {
 272        struct mutex        lock;
 273        unsigned int        id;
 274        unsigned int        caps;
 275#define MEMSTICK_CAP_AUTO_GET_INT  1
 276#define MEMSTICK_CAP_PAR4          2
 277#define MEMSTICK_CAP_PAR8          4
 278
 279        struct work_struct  media_checker;
 280        struct device       dev;
 281
 282        struct memstick_dev *card;
 283        unsigned int        retries;
 284
 285        /* Notify the host that some requests are pending. */
 286        void                (*request)(struct memstick_host *host);
 287        /* Set host IO parameters (power, clock, etc).     */
 288        int                 (*set_param)(struct memstick_host *host,
 289                                         enum memstick_param param,
 290                                         int value);
 291        unsigned long       private[0] ____cacheline_aligned;
 292};
 293
 294struct memstick_driver {
 295        struct memstick_device_id *id_table;
 296        int                       (*probe)(struct memstick_dev *card);
 297        void                      (*remove)(struct memstick_dev *card);
 298        int                       (*suspend)(struct memstick_dev *card,
 299                                             pm_message_t state);
 300        int                       (*resume)(struct memstick_dev *card);
 301
 302        struct device_driver      driver;
 303};
 304
 305int memstick_register_driver(struct memstick_driver *drv);
 306void memstick_unregister_driver(struct memstick_driver *drv);
 307
 308struct memstick_host *memstick_alloc_host(unsigned int extra,
 309                                          struct device *dev);
 310
 311int memstick_add_host(struct memstick_host *host);
 312void memstick_remove_host(struct memstick_host *host);
 313void memstick_free_host(struct memstick_host *host);
 314void memstick_detect_change(struct memstick_host *host);
 315void memstick_suspend_host(struct memstick_host *host);
 316void memstick_resume_host(struct memstick_host *host);
 317
 318void memstick_init_req_sg(struct memstick_request *mrq, unsigned char tpc,
 319                          const struct scatterlist *sg);
 320void memstick_init_req(struct memstick_request *mrq, unsigned char tpc,
 321                       const void *buf, size_t length);
 322int memstick_next_req(struct memstick_host *host,
 323                      struct memstick_request **mrq);
 324void memstick_new_req(struct memstick_host *host);
 325
 326int memstick_set_rw_addr(struct memstick_dev *card);
 327
 328static inline void *memstick_priv(struct memstick_host *host)
 329{
 330        return (void *)host->private;
 331}
 332
 333static inline void *memstick_get_drvdata(struct memstick_dev *card)
 334{
 335        return dev_get_drvdata(&card->dev);
 336}
 337
 338static inline void memstick_set_drvdata(struct memstick_dev *card, void *data)
 339{
 340        dev_set_drvdata(&card->dev, data);
 341}
 342
 343#endif
 344