summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
blob: 092e9c8249926ac80a6831f75ec72c818ff86c43 (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
/*
 * 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

/* mask of register map */
#define REG_F0_REG_MASK		0x7FF
#define REG_F1_MISC_MASK	0x1FFFF

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

/* function 0 vendor specific CCCR registers */
#define SDIO_CCCR_BRCM_CARDCAP			0xf0
#define SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT	0x02
#define SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT	0x04
#define SDIO_CCCR_BRCM_CARDCAP_CMD_NODEC	0x08
#define SDIO_CCCR_BRCM_CARDCTRL		0xf1
#define SDIO_CCCR_BRCM_CARDCTRL_WLANRESET	0x02
#define SDIO_CCCR_BRCM_SEPINT			0xf2

#define  SDIO_SEPINT_MASK		0x01
#define  SDIO_SEPINT_OE			0x02
#define  SDIO_SEPINT_ACT_HI		0x04

/* 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
/* MesBusyCtl (rev 11) */
#define SBSDIO_FUNC1_MESBUSYCTRL	0x1001D
/* Sdio Core Rev 12 */
#define SBSDIO_FUNC1_WAKEUPCTRL		0x1001E
#define SBSDIO_FUNC1_WCTRL_ALPWAIT_MASK		0x1
#define SBSDIO_FUNC1_WCTRL_ALPWAIT_SHIFT	0
#define SBSDIO_FUNC1_WCTRL_HTWAIT_MASK		0x2
#define SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT		1
#define SBSDIO_FUNC1_SLEEPCSR		0x1001F
#define SBSDIO_FUNC1_SLEEPCSR_KSO_MASK		0x1
#define SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT		0
#define SBSDIO_FUNC1_SLEEPCSR_KSO_EN		1
#define SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK	0x2
#define SBSDIO_FUNC1_SLEEPCSR_DEVON_SHIFT	1

#define SBSDIO_FUNC1_MISC_REG_START	0x10000	/* f1 misc register start */
#define SBSDIO_FUNC1_MISC_REG_LIMIT	0x1001F	/* 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

/* Packet alignment for most efficient SDIO (can change based on platform) */
#define BRCMF_SDALIGN	(1 << 6)

/* watchdog polling interval in ms */
#define BRCMF_WD_POLL_MS	10

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

struct brcmf_sdio;

struct brcmf_sdio_dev {
	struct sdio_func *func[SDIO_MAX_FUNCS];
	u8 num_funcs;			/* Supported funcs on client */
	u32 sbwad;			/* Save backplane window address */
	struct brcmf_sdio *bus;
	atomic_t suspend;		/* suspend flag */
	wait_queue_head_t request_word_wait;
	wait_queue_head_t request_buffer_wait;
	struct device *dev;
	struct brcmf_bus *bus_if;
	struct brcmfmac_sdio_platform_data *pdata;
	bool oob_irq_requested;
	bool irq_en;			/* irq enable flags */
	spinlock_t irq_en_lock;
	bool irq_wake;			/* irq wake enable flags */
	bool sg_support;
	uint max_request_size;
	ushort max_segment_count;
	uint max_segment_size;
};

/* Register/deregister interrupt handler. */
int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev);
int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev);

/* sdio device register access interface */
u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, u8 data,
		       int *ret);
void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data,
		       int *ret);

/* Buffer transfer to/from device (client) core via cmd53.
 *   fn:       function number
 *   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.
 */
int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
			 struct sk_buff_head *pktq);
int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes);

int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt);
int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes);
int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
			   struct sk_buff_head *pktq, uint totlen);

/* 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

/* 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.
 */
int brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
		      u8 *data, uint size);

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

struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev);
void brcmf_sdio_remove(struct brcmf_sdio *bus);
void brcmf_sdio_isr(struct brcmf_sdio *bus);

void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick);

#endif				/* _BRCM_SDH_H_ */