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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Sony MemoryStick support
4 *
5 * Copyright (C) 2007 Alex Dubov <[email protected]>
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 bool removing;
285
286 /* Notify the host that some requests are pending. */
287 void (*request)(struct memstick_host *host);
288 /* Set host IO parameters (power, clock, etc). */
289 int (*set_param)(struct memstick_host *host,
290 enum memstick_param param,
291 int value);
292 unsigned long private[] ____cacheline_aligned;
293};
294
295struct memstick_driver {
296 const struct memstick_device_id *id_table;
297 int (*probe)(struct memstick_dev *card);
298 void (*remove)(struct memstick_dev *card);
299 int (*suspend)(struct memstick_dev *card,
300 pm_message_t state);
301 int (*resume)(struct memstick_dev *card);
302
303 struct device_driver driver;
304};
305
306int memstick_register_driver(struct memstick_driver *drv);
307void memstick_unregister_driver(struct memstick_driver *drv);
308
309struct memstick_host *memstick_alloc_host(unsigned int extra,
310 struct device *dev);
311
312int memstick_add_host(struct memstick_host *host);
313void memstick_remove_host(struct memstick_host *host);
314void memstick_free_host(struct memstick_host *host);
315void memstick_detect_change(struct memstick_host *host);
316void memstick_suspend_host(struct memstick_host *host);
317void memstick_resume_host(struct memstick_host *host);
318
319void memstick_init_req_sg(struct memstick_request *mrq, unsigned char tpc,
320 const struct scatterlist *sg);
321void memstick_init_req(struct memstick_request *mrq, unsigned char tpc,
322 const void *buf, size_t length);
323int memstick_next_req(struct memstick_host *host,
324 struct memstick_request **mrq);
325void memstick_new_req(struct memstick_host *host);
326
327int memstick_set_rw_addr(struct memstick_dev *card);
328
329static inline void *memstick_priv(struct memstick_host *host)
330{
331 return (void *)host->private;
332}
333
334static inline void *memstick_get_drvdata(struct memstick_dev *card)
335{
336 return dev_get_drvdata(&card->dev);
337}
338
339static inline void memstick_set_drvdata(struct memstick_dev *card, void *data)
340{
341 dev_set_drvdata(&card->dev, data);
342}
343
344#endif