summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
blob: 726fa8981113733a75b6ab19e99db4c316029adb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef	_BRCM_SDH_H_
#define	_BRCM_SDH_H_

#include <linux/skbuff.h>

#define SDIO_FUNC_0		0
#define SDIO_FUNC_1		1
#define SDIO_FUNC_2		2

#define SDIOD_FBR_SIZE		0x100

/* io_en */
#define SDIO_FUNC_ENABLE_1	0x02
#define SDIO_FUNC_ENABLE_2	0x04

/* io_rdys */
#define SDIO_FUNC_READY_1	0x02
#define SDIO_FUNC_READY_2	0x04

/* intr_status */
#define INTR_STATUS_FUNC1	0x2
#define INTR_STATUS_FUNC2	0x4

/* Maximum number of I/O funcs */
#define SDIOD_MAX_IOFUNCS	7

/* as of sdiod rev 0, supports 3 functions */
#define SBSDIO_NUM_FUNCTION		3

/* function 1 miscellaneous registers */

/* sprom command and status */
#define SBSDIO_SPROM_CS			0x10000
/* sprom info register */
#define SBSDIO_SPROM_INFO		0x10001
/* sprom indirect access data byte 0 */
#define SBSDIO_SPROM_DATA_LOW		0x10002
/* sprom indirect access data byte 1 */
#define SBSDIO_SPROM_DATA_HIGH		0x10003
/* sprom indirect access addr byte 0 */
#define SBSDIO_SPROM_ADDR_LOW		0x10004
/* sprom indirect access addr byte 0 */
#define SBSDIO_SPROM_ADDR_HIGH		0x10005
/* xtal_pu (gpio) output */
#define SBSDIO_CHIP_CTRL_DATA		0x10006
/* xtal_pu (gpio) enable */
#define SBSDIO_CHIP_CTRL_EN		0x10007
/* rev < 7, watermark for sdio device */
#define SBSDIO_WATERMARK		0x10008
/* control busy signal generation */
#define SBSDIO_DEVICE_CTL		0x10009

/* SB Address Window Low (b15) */
#define SBSDIO_FUNC1_SBADDRLOW		0x1000A
/* SB Address Window Mid (b23:b16) */
#define SBSDIO_FUNC1_SBADDRMID		0x1000B
/* SB Address Window High (b31:b24)    */
#define SBSDIO_FUNC1_SBADDRHIGH		0x1000C
/* Frame Control (frame term/abort) */
#define SBSDIO_FUNC1_FRAMECTRL		0x1000D
/* ChipClockCSR (ALP/HT ctl/status) */
#define SBSDIO_FUNC1_CHIPCLKCSR		0x1000E
/* SdioPullUp (on cmd, d0-d2) */
#define SBSDIO_FUNC1_SDIOPULLUP		0x1000F
/* Write Frame Byte Count Low */
#define SBSDIO_FUNC1_WFRAMEBCLO		0x10019
/* Write Frame Byte Count High */
#define SBSDIO_FUNC1_WFRAMEBCHI		0x1001A
/* Read Frame Byte Count Low */
#define SBSDIO_FUNC1_RFRAMEBCLO		0x1001B
/* Read Frame Byte Count High */
#define SBSDIO_FUNC1_RFRAMEBCHI		0x1001C

#define SBSDIO_FUNC1_MISC_REG_START	0x10000	/* f1 misc register start */
#define SBSDIO_FUNC1_MISC_REG_LIMIT	0x1001C	/* f1 misc register end */

/* function 1 OCP space */

/* sb offset addr is <= 15 bits, 32k */
#define SBSDIO_SB_OFT_ADDR_MASK		0x07FFF
#define SBSDIO_SB_OFT_ADDR_LIMIT	0x08000
/* with b15, maps to 32-bit SB access */
#define SBSDIO_SB_ACCESS_2_4B_FLAG	0x08000

/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */

#define SBSDIO_SBADDRLOW_MASK		0x80	/* Valid bits in SBADDRLOW */
#define SBSDIO_SBADDRMID_MASK		0xff	/* Valid bits in SBADDRMID */
#define SBSDIO_SBADDRHIGH_MASK		0xffU	/* Valid bits in SBADDRHIGH */
/* Address bits from SBADDR regs */
#define SBSDIO_SBWINDOW_MASK		0xffff8000

#define SDIOH_READ              0	/* Read request */
#define SDIOH_WRITE             1	/* Write request */

#define SDIOH_DATA_FIX          0	/* Fixed addressing */
#define SDIOH_DATA_INC          1	/* Incremental addressing */

/* internal return code */
#define SUCCESS	0
#define ERROR	1

struct brcmf_sdreg {
	int func;
	int offset;
	int value;
};

struct brcmf_sdio_dev {
	struct sdio_func *func[SDIO_MAX_FUNCS];
	u8 num_funcs;			/* Supported funcs on client */
	u32 func_cis_ptr[SDIOD_MAX_IOFUNCS];
	u32 sbwad;			/* Save backplane window address */
	bool regfail;			/* status of last reg_r/w call */
	void *bus;
	atomic_t suspend;		/* suspend flag */
	wait_queue_head_t request_byte_wait;
	wait_queue_head_t request_word_wait;
	wait_queue_head_t request_packet_wait;
	wait_queue_head_t request_buffer_wait;

};

/* Register/deregister device interrupt handler. */
extern int
brcmf_sdcard_intr_reg(struct brcmf_sdio_dev *sdiodev);

extern int brcmf_sdcard_intr_dereg(struct brcmf_sdio_dev *sdiodev);

/* Access SDIO address space (e.g. CCCR) using CMD52 (single-byte interface).
 *   fn:   function number
 *   addr: unmodified SDIO-space address
 *   data: data byte to write
 *   err:  pointer to error code (or NULL)
 */
extern u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint func,
				u32 addr, int *err);
extern void brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint func,
				   u32 addr, u8 data, int *err);

/* Synchronous access to device (client) core registers via CMD53 to F1.
 *   addr: backplane address (i.e. >= regsva from attach)
 *   size: register width in bytes (2 or 4)
 *   data: data for register write
 */
extern u32
brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size);

extern u32
brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size,
		       u32 data);

/* Indicate if last reg read/write failed */
extern bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev);

/* Buffer transfer to/from device (client) core via cmd53.
 *   fn:       function number
 *   addr:     backplane address (i.e. >= regsva from attach)
 *   flags:    backplane width, address increment, sync/async
 *   buf:      pointer to memory data buffer
 *   nbytes:   number of bytes to transfer to/from buf
 *   pkt:      pointer to packet associated with buf (if any)
 *   complete: callback function for command completion (async only)
 *   handle:   handle for completion callback (first arg in callback)
 * Returns 0 or error code.
 * NOTE: Async operation is not currently supported.
 */
extern int
brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
		      uint flags, u8 *buf, uint nbytes, struct sk_buff *pkt);
extern int
brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
		      uint flags, u8 *buf, uint nbytes, struct sk_buff *pkt);

/* Flags bits */

/* Four-byte target (backplane) width (vs. two-byte) */
#define SDIO_REQ_4BYTE	0x1
/* Fixed address (FIFO) (vs. incrementing address) */
#define SDIO_REQ_FIXED	0x2
/* Async request (vs. sync request) */
#define SDIO_REQ_ASYNC	0x4

/* Read/write to memory block (F1, no FIFO) via CMD53 (sync only).
 *   rw:       read or write (0/1)
 *   addr:     direct SDIO address
 *   buf:      pointer to memory data buffer
 *   nbytes:   number of bytes to transfer to/from buf
 * Returns 0 or error code.
 */
extern int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw,
			       u32 addr, u8 *buf, uint nbytes);

/* Issue an abort to the specified function */
extern int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn);

/* platform specific/high level functions */
extern int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev);
extern int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev);

extern int brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev,
					  u32 address);

/* attach, return handler on success, NULL if failed.
 *  The handler shall be provided by all subsequent calls. No local cache
 *  cfghdl points to the starting address of pci device mapped memory
 */
extern int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev);
extern void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev);

/* read or write one byte using cmd52 */
extern int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw,
				    uint fnc, uint addr, u8 *byte);

/* read or write 2/4 bytes using cmd53 */
extern int
brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
			 uint rw, uint fnc, uint addr,
			 u32 *word, uint nbyte);

/* read or write any buffer using cmd53 */
extern int
brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
			   uint fix_inc, uint rw, uint fnc_num,
			   u32 addr, uint regwidth,
			   u32 buflen, u8 *buffer, struct sk_buff *pkt);

/* Watchdog timer interface for pm ops */
extern void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev,
				    bool enable);

extern void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
				u32 regsva, struct brcmf_sdio_dev *sdiodev);
extern void brcmf_sdbrcm_disconnect(void *ptr);
extern void brcmf_sdbrcm_isr(void *arg);
#endif				/* _BRCM_SDH_H_ */