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5b435de0 AS |
1 | /* |
2 | * Copyright (c) 2010 Broadcom Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY | |
11 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION | |
13 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN | |
14 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
02f77195 JP |
17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
18 | ||
5b435de0 AS |
19 | #include <linux/types.h> |
20 | #include <linux/kernel.h> | |
21 | #include <linux/kthread.h> | |
22 | #include <linux/printk.h> | |
23 | #include <linux/pci_ids.h> | |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/sched.h> | |
27 | #include <linux/mmc/sdio.h> | |
28 | #include <linux/mmc/sdio_func.h> | |
29 | #include <linux/mmc/card.h> | |
30 | #include <linux/semaphore.h> | |
31 | #include <linux/firmware.h> | |
b7a57e76 | 32 | #include <linux/module.h> |
99ba15cd | 33 | #include <linux/bcma/bcma.h> |
4fc0d016 | 34 | #include <linux/debugfs.h> |
8dc01811 | 35 | #include <linux/vmalloc.h> |
5b435de0 AS |
36 | #include <asm/unaligned.h> |
37 | #include <defs.h> | |
38 | #include <brcmu_wifi.h> | |
39 | #include <brcmu_utils.h> | |
40 | #include <brcm_hw_ids.h> | |
41 | #include <soc.h> | |
42 | #include "sdio_host.h" | |
a83369b6 | 43 | #include "sdio_chip.h" |
5b435de0 AS |
44 | |
45 | #define DCMD_RESP_TIMEOUT 2000 /* In milli second */ | |
46 | ||
8ae74654 | 47 | #ifdef DEBUG |
5b435de0 AS |
48 | |
49 | #define BRCMF_TRAP_INFO_SIZE 80 | |
50 | ||
51 | #define CBUF_LEN (128) | |
52 | ||
4fc0d016 AS |
53 | /* Device console log buffer state */ |
54 | #define CONSOLE_BUFFER_MAX 2024 | |
55 | ||
5b435de0 AS |
56 | struct rte_log_le { |
57 | __le32 buf; /* Can't be pointer on (64-bit) hosts */ | |
58 | __le32 buf_size; | |
59 | __le32 idx; | |
60 | char *_buf_compat; /* Redundant pointer for backward compat. */ | |
61 | }; | |
62 | ||
63 | struct rte_console { | |
64 | /* Virtual UART | |
65 | * When there is no UART (e.g. Quickturn), | |
66 | * the host should write a complete | |
67 | * input line directly into cbuf and then write | |
68 | * the length into vcons_in. | |
69 | * This may also be used when there is a real UART | |
70 | * (at risk of conflicting with | |
71 | * the real UART). vcons_out is currently unused. | |
72 | */ | |
73 | uint vcons_in; | |
74 | uint vcons_out; | |
75 | ||
76 | /* Output (logging) buffer | |
77 | * Console output is written to a ring buffer log_buf at index log_idx. | |
78 | * The host may read the output when it sees log_idx advance. | |
79 | * Output will be lost if the output wraps around faster than the host | |
80 | * polls. | |
81 | */ | |
82 | struct rte_log_le log_le; | |
83 | ||
84 | /* Console input line buffer | |
85 | * Characters are read one at a time into cbuf | |
86 | * until <CR> is received, then | |
87 | * the buffer is processed as a command line. | |
88 | * Also used for virtual UART. | |
89 | */ | |
90 | uint cbuf_idx; | |
91 | char cbuf[CBUF_LEN]; | |
92 | }; | |
93 | ||
8ae74654 | 94 | #endif /* DEBUG */ |
5b435de0 AS |
95 | #include <chipcommon.h> |
96 | ||
5b435de0 | 97 | #include "dhd_bus.h" |
5b435de0 | 98 | #include "dhd_dbg.h" |
5b435de0 AS |
99 | |
100 | #define TXQLEN 2048 /* bulk tx queue length */ | |
101 | #define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */ | |
102 | #define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */ | |
103 | #define PRIOMASK 7 | |
104 | ||
105 | #define TXRETRIES 2 /* # of retries for tx frames */ | |
106 | ||
107 | #define BRCMF_RXBOUND 50 /* Default for max rx frames in | |
108 | one scheduling */ | |
109 | ||
110 | #define BRCMF_TXBOUND 20 /* Default for max tx frames in | |
111 | one scheduling */ | |
112 | ||
113 | #define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */ | |
114 | ||
115 | #define MEMBLOCK 2048 /* Block size used for downloading | |
116 | of dongle image */ | |
117 | #define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold | |
118 | biggest possible glom */ | |
119 | ||
120 | #define BRCMF_FIRSTREAD (1 << 6) | |
121 | ||
122 | ||
123 | /* SBSDIO_DEVICE_CTL */ | |
124 | ||
125 | /* 1: device will assert busy signal when receiving CMD53 */ | |
126 | #define SBSDIO_DEVCTL_SETBUSY 0x01 | |
127 | /* 1: assertion of sdio interrupt is synchronous to the sdio clock */ | |
128 | #define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02 | |
129 | /* 1: mask all interrupts to host except the chipActive (rev 8) */ | |
130 | #define SBSDIO_DEVCTL_CA_INT_ONLY 0x04 | |
131 | /* 1: isolate internal sdio signals, put external pads in tri-state; requires | |
132 | * sdio bus power cycle to clear (rev 9) */ | |
133 | #define SBSDIO_DEVCTL_PADS_ISO 0x08 | |
134 | /* Force SD->SB reset mapping (rev 11) */ | |
135 | #define SBSDIO_DEVCTL_SB_RST_CTL 0x30 | |
136 | /* Determined by CoreControl bit */ | |
137 | #define SBSDIO_DEVCTL_RST_CORECTL 0x00 | |
138 | /* Force backplane reset */ | |
139 | #define SBSDIO_DEVCTL_RST_BPRESET 0x10 | |
140 | /* Force no backplane reset */ | |
141 | #define SBSDIO_DEVCTL_RST_NOBPRESET 0x20 | |
142 | ||
5b435de0 AS |
143 | /* direct(mapped) cis space */ |
144 | ||
145 | /* MAPPED common CIS address */ | |
146 | #define SBSDIO_CIS_BASE_COMMON 0x1000 | |
147 | /* maximum bytes in one CIS */ | |
148 | #define SBSDIO_CIS_SIZE_LIMIT 0x200 | |
149 | /* cis offset addr is < 17 bits */ | |
150 | #define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF | |
151 | ||
152 | /* manfid tuple length, include tuple, link bytes */ | |
153 | #define SBSDIO_CIS_MANFID_TUPLE_LEN 6 | |
154 | ||
155 | /* intstatus */ | |
156 | #define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */ | |
157 | #define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */ | |
158 | #define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */ | |
159 | #define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */ | |
160 | #define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */ | |
161 | #define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */ | |
162 | #define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */ | |
163 | #define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */ | |
164 | #define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */ | |
165 | #define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */ | |
166 | #define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */ | |
167 | #define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */ | |
168 | #define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */ | |
169 | #define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */ | |
170 | #define I_PC (1 << 10) /* descriptor error */ | |
171 | #define I_PD (1 << 11) /* data error */ | |
172 | #define I_DE (1 << 12) /* Descriptor protocol Error */ | |
173 | #define I_RU (1 << 13) /* Receive descriptor Underflow */ | |
174 | #define I_RO (1 << 14) /* Receive fifo Overflow */ | |
175 | #define I_XU (1 << 15) /* Transmit fifo Underflow */ | |
176 | #define I_RI (1 << 16) /* Receive Interrupt */ | |
177 | #define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */ | |
178 | #define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */ | |
179 | #define I_XI (1 << 24) /* Transmit Interrupt */ | |
180 | #define I_RF_TERM (1 << 25) /* Read Frame Terminate */ | |
181 | #define I_WF_TERM (1 << 26) /* Write Frame Terminate */ | |
182 | #define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */ | |
183 | #define I_SBINT (1 << 28) /* sbintstatus Interrupt */ | |
184 | #define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */ | |
185 | #define I_SRESET (1 << 30) /* CCCR RES interrupt */ | |
186 | #define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */ | |
187 | #define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU) | |
188 | #define I_DMA (I_RI | I_XI | I_ERRORS) | |
189 | ||
190 | /* corecontrol */ | |
191 | #define CC_CISRDY (1 << 0) /* CIS Ready */ | |
192 | #define CC_BPRESEN (1 << 1) /* CCCR RES signal */ | |
193 | #define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */ | |
194 | #define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */ | |
195 | #define CC_XMTDATAAVAIL_MODE (1 << 4) | |
196 | #define CC_XMTDATAAVAIL_CTRL (1 << 5) | |
197 | ||
198 | /* SDA_FRAMECTRL */ | |
199 | #define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */ | |
200 | #define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */ | |
201 | #define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */ | |
202 | #define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */ | |
203 | ||
204 | /* HW frame tag */ | |
205 | #define SDPCM_FRAMETAG_LEN 4 /* 2 bytes len, 2 bytes check val */ | |
206 | ||
207 | /* Total length of frame header for dongle protocol */ | |
208 | #define SDPCM_HDRLEN (SDPCM_FRAMETAG_LEN + SDPCM_SWHEADER_LEN) | |
209 | #define SDPCM_RESERVE (SDPCM_HDRLEN + BRCMF_SDALIGN) | |
210 | ||
211 | /* | |
212 | * Software allocation of To SB Mailbox resources | |
213 | */ | |
214 | ||
215 | /* tosbmailbox bits corresponding to intstatus bits */ | |
216 | #define SMB_NAK (1 << 0) /* Frame NAK */ | |
217 | #define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */ | |
218 | #define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */ | |
219 | #define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */ | |
220 | ||
221 | /* tosbmailboxdata */ | |
222 | #define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */ | |
223 | ||
224 | /* | |
225 | * Software allocation of To Host Mailbox resources | |
226 | */ | |
227 | ||
228 | /* intstatus bits */ | |
229 | #define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */ | |
230 | #define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */ | |
231 | #define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */ | |
232 | #define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */ | |
233 | ||
234 | /* tohostmailboxdata */ | |
235 | #define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */ | |
236 | #define HMB_DATA_DEVREADY 2 /* talk to host after enable */ | |
237 | #define HMB_DATA_FC 4 /* per prio flowcontrol update flag */ | |
238 | #define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */ | |
239 | ||
240 | #define HMB_DATA_FCDATA_MASK 0xff000000 | |
241 | #define HMB_DATA_FCDATA_SHIFT 24 | |
242 | ||
243 | #define HMB_DATA_VERSION_MASK 0x00ff0000 | |
244 | #define HMB_DATA_VERSION_SHIFT 16 | |
245 | ||
246 | /* | |
247 | * Software-defined protocol header | |
248 | */ | |
249 | ||
250 | /* Current protocol version */ | |
251 | #define SDPCM_PROT_VERSION 4 | |
252 | ||
253 | /* SW frame header */ | |
254 | #define SDPCM_PACKET_SEQUENCE(p) (((u8 *)p)[0] & 0xff) | |
255 | ||
256 | #define SDPCM_CHANNEL_MASK 0x00000f00 | |
257 | #define SDPCM_CHANNEL_SHIFT 8 | |
258 | #define SDPCM_PACKET_CHANNEL(p) (((u8 *)p)[1] & 0x0f) | |
259 | ||
260 | #define SDPCM_NEXTLEN_OFFSET 2 | |
261 | ||
262 | /* Data Offset from SOF (HW Tag, SW Tag, Pad) */ | |
263 | #define SDPCM_DOFFSET_OFFSET 3 /* Data Offset */ | |
264 | #define SDPCM_DOFFSET_VALUE(p) (((u8 *)p)[SDPCM_DOFFSET_OFFSET] & 0xff) | |
265 | #define SDPCM_DOFFSET_MASK 0xff000000 | |
266 | #define SDPCM_DOFFSET_SHIFT 24 | |
267 | #define SDPCM_FCMASK_OFFSET 4 /* Flow control */ | |
268 | #define SDPCM_FCMASK_VALUE(p) (((u8 *)p)[SDPCM_FCMASK_OFFSET] & 0xff) | |
269 | #define SDPCM_WINDOW_OFFSET 5 /* Credit based fc */ | |
270 | #define SDPCM_WINDOW_VALUE(p) (((u8 *)p)[SDPCM_WINDOW_OFFSET] & 0xff) | |
271 | ||
272 | #define SDPCM_SWHEADER_LEN 8 /* SW header is 64 bits */ | |
273 | ||
274 | /* logical channel numbers */ | |
275 | #define SDPCM_CONTROL_CHANNEL 0 /* Control channel Id */ | |
276 | #define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication Channel Id */ | |
277 | #define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv Channel Id */ | |
278 | #define SDPCM_GLOM_CHANNEL 3 /* For coalesced packets */ | |
279 | #define SDPCM_TEST_CHANNEL 15 /* Reserved for test/debug packets */ | |
280 | ||
281 | #define SDPCM_SEQUENCE_WRAP 256 /* wrap-around val for 8bit frame seq */ | |
282 | ||
283 | #define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80) | |
284 | ||
285 | /* | |
286 | * Shared structure between dongle and the host. | |
287 | * The structure contains pointers to trap or assert information. | |
288 | */ | |
4fc0d016 | 289 | #define SDPCM_SHARED_VERSION 0x0003 |
5b435de0 AS |
290 | #define SDPCM_SHARED_VERSION_MASK 0x00FF |
291 | #define SDPCM_SHARED_ASSERT_BUILT 0x0100 | |
292 | #define SDPCM_SHARED_ASSERT 0x0200 | |
293 | #define SDPCM_SHARED_TRAP 0x0400 | |
294 | ||
295 | /* Space for header read, limit for data packets */ | |
296 | #define MAX_HDR_READ (1 << 6) | |
297 | #define MAX_RX_DATASZ 2048 | |
298 | ||
299 | /* Maximum milliseconds to wait for F2 to come up */ | |
300 | #define BRCMF_WAIT_F2RDY 3000 | |
301 | ||
302 | /* Bump up limit on waiting for HT to account for first startup; | |
303 | * if the image is doing a CRC calculation before programming the PMU | |
304 | * for HT availability, it could take a couple hundred ms more, so | |
305 | * max out at a 1 second (1000000us). | |
306 | */ | |
307 | #undef PMU_MAX_TRANSITION_DLY | |
308 | #define PMU_MAX_TRANSITION_DLY 1000000 | |
309 | ||
310 | /* Value for ChipClockCSR during initial setup */ | |
311 | #define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \ | |
312 | SBSDIO_ALP_AVAIL_REQ) | |
313 | ||
314 | /* Flags for SDH calls */ | |
315 | #define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED) | |
316 | ||
52e1409f AS |
317 | #define BRCMF_SDIO_FW_NAME "brcm/brcmfmac-sdio.bin" |
318 | #define BRCMF_SDIO_NV_NAME "brcm/brcmfmac-sdio.txt" | |
319 | MODULE_FIRMWARE(BRCMF_SDIO_FW_NAME); | |
320 | MODULE_FIRMWARE(BRCMF_SDIO_NV_NAME); | |
8dd939ca | 321 | |
382a9e0f FL |
322 | #define BRCMF_IDLE_IMMEDIATE (-1) /* Enter idle immediately */ |
323 | #define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change | |
324 | * when idle | |
325 | */ | |
326 | #define BRCMF_IDLE_INTERVAL 1 | |
327 | ||
5b435de0 AS |
328 | /* |
329 | * Conversion of 802.1D priority to precedence level | |
330 | */ | |
331 | static uint prio2prec(u32 prio) | |
332 | { | |
333 | return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ? | |
334 | (prio^2) : prio; | |
335 | } | |
336 | ||
5b435de0 AS |
337 | /* core registers */ |
338 | struct sdpcmd_regs { | |
339 | u32 corecontrol; /* 0x00, rev8 */ | |
340 | u32 corestatus; /* rev8 */ | |
341 | u32 PAD[1]; | |
342 | u32 biststatus; /* rev8 */ | |
343 | ||
344 | /* PCMCIA access */ | |
345 | u16 pcmciamesportaladdr; /* 0x010, rev8 */ | |
346 | u16 PAD[1]; | |
347 | u16 pcmciamesportalmask; /* rev8 */ | |
348 | u16 PAD[1]; | |
349 | u16 pcmciawrframebc; /* rev8 */ | |
350 | u16 PAD[1]; | |
351 | u16 pcmciaunderflowtimer; /* rev8 */ | |
352 | u16 PAD[1]; | |
353 | ||
354 | /* interrupt */ | |
355 | u32 intstatus; /* 0x020, rev8 */ | |
356 | u32 hostintmask; /* rev8 */ | |
357 | u32 intmask; /* rev8 */ | |
358 | u32 sbintstatus; /* rev8 */ | |
359 | u32 sbintmask; /* rev8 */ | |
360 | u32 funcintmask; /* rev4 */ | |
361 | u32 PAD[2]; | |
362 | u32 tosbmailbox; /* 0x040, rev8 */ | |
363 | u32 tohostmailbox; /* rev8 */ | |
364 | u32 tosbmailboxdata; /* rev8 */ | |
365 | u32 tohostmailboxdata; /* rev8 */ | |
366 | ||
367 | /* synchronized access to registers in SDIO clock domain */ | |
368 | u32 sdioaccess; /* 0x050, rev8 */ | |
369 | u32 PAD[3]; | |
370 | ||
371 | /* PCMCIA frame control */ | |
372 | u8 pcmciaframectrl; /* 0x060, rev8 */ | |
373 | u8 PAD[3]; | |
374 | u8 pcmciawatermark; /* rev8 */ | |
375 | u8 PAD[155]; | |
376 | ||
377 | /* interrupt batching control */ | |
378 | u32 intrcvlazy; /* 0x100, rev8 */ | |
379 | u32 PAD[3]; | |
380 | ||
381 | /* counters */ | |
382 | u32 cmd52rd; /* 0x110, rev8 */ | |
383 | u32 cmd52wr; /* rev8 */ | |
384 | u32 cmd53rd; /* rev8 */ | |
385 | u32 cmd53wr; /* rev8 */ | |
386 | u32 abort; /* rev8 */ | |
387 | u32 datacrcerror; /* rev8 */ | |
388 | u32 rdoutofsync; /* rev8 */ | |
389 | u32 wroutofsync; /* rev8 */ | |
390 | u32 writebusy; /* rev8 */ | |
391 | u32 readwait; /* rev8 */ | |
392 | u32 readterm; /* rev8 */ | |
393 | u32 writeterm; /* rev8 */ | |
394 | u32 PAD[40]; | |
395 | u32 clockctlstatus; /* rev8 */ | |
396 | u32 PAD[7]; | |
397 | ||
398 | u32 PAD[128]; /* DMA engines */ | |
399 | ||
400 | /* SDIO/PCMCIA CIS region */ | |
401 | char cis[512]; /* 0x400-0x5ff, rev6 */ | |
402 | ||
403 | /* PCMCIA function control registers */ | |
404 | char pcmciafcr[256]; /* 0x600-6ff, rev6 */ | |
405 | u16 PAD[55]; | |
406 | ||
407 | /* PCMCIA backplane access */ | |
408 | u16 backplanecsr; /* 0x76E, rev6 */ | |
409 | u16 backplaneaddr0; /* rev6 */ | |
410 | u16 backplaneaddr1; /* rev6 */ | |
411 | u16 backplaneaddr2; /* rev6 */ | |
412 | u16 backplaneaddr3; /* rev6 */ | |
413 | u16 backplanedata0; /* rev6 */ | |
414 | u16 backplanedata1; /* rev6 */ | |
415 | u16 backplanedata2; /* rev6 */ | |
416 | u16 backplanedata3; /* rev6 */ | |
417 | u16 PAD[31]; | |
418 | ||
419 | /* sprom "size" & "blank" info */ | |
420 | u16 spromstatus; /* 0x7BE, rev2 */ | |
421 | u32 PAD[464]; | |
422 | ||
423 | u16 PAD[0x80]; | |
424 | }; | |
425 | ||
8ae74654 | 426 | #ifdef DEBUG |
5b435de0 AS |
427 | /* Device console log buffer state */ |
428 | struct brcmf_console { | |
429 | uint count; /* Poll interval msec counter */ | |
430 | uint log_addr; /* Log struct address (fixed) */ | |
431 | struct rte_log_le log_le; /* Log struct (host copy) */ | |
432 | uint bufsize; /* Size of log buffer */ | |
433 | u8 *buf; /* Log buffer (host copy) */ | |
434 | uint last; /* Last buffer read index */ | |
435 | }; | |
4fc0d016 AS |
436 | |
437 | struct brcmf_trap_info { | |
438 | __le32 type; | |
439 | __le32 epc; | |
440 | __le32 cpsr; | |
441 | __le32 spsr; | |
442 | __le32 r0; /* a1 */ | |
443 | __le32 r1; /* a2 */ | |
444 | __le32 r2; /* a3 */ | |
445 | __le32 r3; /* a4 */ | |
446 | __le32 r4; /* v1 */ | |
447 | __le32 r5; /* v2 */ | |
448 | __le32 r6; /* v3 */ | |
449 | __le32 r7; /* v4 */ | |
450 | __le32 r8; /* v5 */ | |
451 | __le32 r9; /* sb/v6 */ | |
452 | __le32 r10; /* sl/v7 */ | |
453 | __le32 r11; /* fp/v8 */ | |
454 | __le32 r12; /* ip */ | |
455 | __le32 r13; /* sp */ | |
456 | __le32 r14; /* lr */ | |
457 | __le32 pc; /* r15 */ | |
458 | }; | |
8ae74654 | 459 | #endif /* DEBUG */ |
5b435de0 AS |
460 | |
461 | struct sdpcm_shared { | |
462 | u32 flags; | |
463 | u32 trap_addr; | |
464 | u32 assert_exp_addr; | |
465 | u32 assert_file_addr; | |
466 | u32 assert_line; | |
467 | u32 console_addr; /* Address of struct rte_console */ | |
468 | u32 msgtrace_addr; | |
469 | u8 tag[32]; | |
4fc0d016 | 470 | u32 brpt_addr; |
5b435de0 AS |
471 | }; |
472 | ||
473 | struct sdpcm_shared_le { | |
474 | __le32 flags; | |
475 | __le32 trap_addr; | |
476 | __le32 assert_exp_addr; | |
477 | __le32 assert_file_addr; | |
478 | __le32 assert_line; | |
479 | __le32 console_addr; /* Address of struct rte_console */ | |
480 | __le32 msgtrace_addr; | |
481 | u8 tag[32]; | |
4fc0d016 | 482 | __le32 brpt_addr; |
5b435de0 AS |
483 | }; |
484 | ||
4754fcee FL |
485 | /* SDIO read frame info */ |
486 | struct brcmf_sdio_read { | |
487 | u8 seq_num; | |
488 | u8 channel; | |
489 | u16 len; | |
490 | u16 len_left; | |
491 | u16 len_nxtfrm; | |
492 | u8 dat_offset; | |
493 | }; | |
5b435de0 AS |
494 | |
495 | /* misc chip info needed by some of the routines */ | |
5b435de0 | 496 | /* Private data for SDIO bus interaction */ |
e92eedf4 | 497 | struct brcmf_sdio { |
5b435de0 AS |
498 | struct brcmf_sdio_dev *sdiodev; /* sdio device handler */ |
499 | struct chip_info *ci; /* Chip info struct */ | |
500 | char *vars; /* Variables (from CIS and/or other) */ | |
501 | uint varsz; /* Size of variables buffer */ | |
502 | ||
503 | u32 ramsize; /* Size of RAM in SOCRAM (bytes) */ | |
504 | ||
505 | u32 hostintmask; /* Copy of Host Interrupt Mask */ | |
4531603a FL |
506 | atomic_t intstatus; /* Intstatus bits (events) pending */ |
507 | atomic_t fcstate; /* State of dongle flow-control */ | |
5b435de0 AS |
508 | |
509 | uint blocksize; /* Block size of SDIO transfers */ | |
510 | uint roundup; /* Max roundup limit */ | |
511 | ||
512 | struct pktq txq; /* Queue length used for flow-control */ | |
513 | u8 flowcontrol; /* per prio flow control bitmask */ | |
514 | u8 tx_seq; /* Transmit sequence number (next) */ | |
515 | u8 tx_max; /* Maximum transmit sequence allowed */ | |
516 | ||
517 | u8 hdrbuf[MAX_HDR_READ + BRCMF_SDALIGN]; | |
518 | u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */ | |
5b435de0 | 519 | u8 rx_seq; /* Receive sequence number (expected) */ |
4754fcee FL |
520 | struct brcmf_sdio_read cur_read; |
521 | /* info of current read frame */ | |
5b435de0 | 522 | bool rxskip; /* Skip receive (awaiting NAK ACK) */ |
4754fcee | 523 | bool rxpending; /* Data frame pending in dongle */ |
5b435de0 AS |
524 | |
525 | uint rxbound; /* Rx frames to read before resched */ | |
526 | uint txbound; /* Tx frames to send before resched */ | |
527 | uint txminmax; | |
528 | ||
529 | struct sk_buff *glomd; /* Packet containing glomming descriptor */ | |
b83db862 | 530 | struct sk_buff_head glom; /* Packet list for glommed superframe */ |
5b435de0 AS |
531 | uint glomerr; /* Glom packet read errors */ |
532 | ||
533 | u8 *rxbuf; /* Buffer for receiving control packets */ | |
534 | uint rxblen; /* Allocated length of rxbuf */ | |
535 | u8 *rxctl; /* Aligned pointer into rxbuf */ | |
dd43a01c | 536 | u8 *rxctl_orig; /* pointer for freeing rxctl */ |
5b435de0 AS |
537 | u8 *databuf; /* Buffer for receiving big glom packet */ |
538 | u8 *dataptr; /* Aligned pointer into databuf */ | |
539 | uint rxlen; /* Length of valid data in buffer */ | |
dd43a01c | 540 | spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */ |
5b435de0 AS |
541 | |
542 | u8 sdpcm_ver; /* Bus protocol reported by dongle */ | |
543 | ||
544 | bool intr; /* Use interrupts */ | |
545 | bool poll; /* Use polling */ | |
1d382273 | 546 | atomic_t ipend; /* Device interrupt is pending */ |
5b435de0 AS |
547 | uint spurious; /* Count of spurious interrupts */ |
548 | uint pollrate; /* Ticks between device polls */ | |
549 | uint polltick; /* Tick counter */ | |
5b435de0 | 550 | |
8ae74654 | 551 | #ifdef DEBUG |
5b435de0 AS |
552 | uint console_interval; |
553 | struct brcmf_console console; /* Console output polling support */ | |
554 | uint console_addr; /* Console address from shared struct */ | |
8ae74654 | 555 | #endif /* DEBUG */ |
5b435de0 | 556 | |
5b435de0 AS |
557 | uint clkstate; /* State of sd and backplane clock(s) */ |
558 | bool activity; /* Activity flag for clock down */ | |
559 | s32 idletime; /* Control for activity timeout */ | |
560 | s32 idlecount; /* Activity timeout counter */ | |
561 | s32 idleclock; /* How to set bus driver when idle */ | |
562 | s32 sd_rxchain; | |
563 | bool use_rxchain; /* If brcmf should use PKT chains */ | |
5b435de0 AS |
564 | bool rxflow_mode; /* Rx flow control mode */ |
565 | bool rxflow; /* Is rx flow control on */ | |
566 | bool alp_only; /* Don't use HT clock (ALP only) */ | |
5b435de0 | 567 | |
5b435de0 AS |
568 | u8 *ctrl_frame_buf; |
569 | u32 ctrl_frame_len; | |
570 | bool ctrl_frame_stat; | |
571 | ||
572 | spinlock_t txqlock; | |
573 | wait_queue_head_t ctrl_wait; | |
574 | wait_queue_head_t dcmd_resp_wait; | |
575 | ||
576 | struct timer_list timer; | |
577 | struct completion watchdog_wait; | |
578 | struct task_struct *watchdog_tsk; | |
579 | bool wd_timer_valid; | |
580 | uint save_ms; | |
581 | ||
f1e68c2e FL |
582 | struct workqueue_struct *brcmf_wq; |
583 | struct work_struct datawork; | |
b948a85c FL |
584 | struct list_head dpc_tsklst; |
585 | spinlock_t dpc_tl_lock; | |
5b435de0 | 586 | |
5b435de0 | 587 | const struct firmware *firmware; |
5b435de0 | 588 | u32 fw_ptr; |
c8bf3484 FL |
589 | |
590 | bool txoff; /* Transmit flow-controlled */ | |
80969836 | 591 | struct brcmf_sdio_count sdcnt; |
5b435de0 AS |
592 | }; |
593 | ||
5b435de0 AS |
594 | /* clkstate */ |
595 | #define CLK_NONE 0 | |
596 | #define CLK_SDONLY 1 | |
597 | #define CLK_PENDING 2 /* Not used yet */ | |
598 | #define CLK_AVAIL 3 | |
599 | ||
8ae74654 | 600 | #ifdef DEBUG |
5b435de0 AS |
601 | static int qcount[NUMPRIO]; |
602 | static int tx_packets[NUMPRIO]; | |
8ae74654 | 603 | #endif /* DEBUG */ |
5b435de0 AS |
604 | |
605 | #define SDIO_DRIVE_STRENGTH 6 /* in milliamps */ | |
606 | ||
607 | #define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL) | |
608 | ||
609 | /* Retry count for register access failures */ | |
610 | static const uint retry_limit = 2; | |
611 | ||
612 | /* Limit on rounding up frames */ | |
613 | static const uint max_roundup = 512; | |
614 | ||
615 | #define ALIGNMENT 4 | |
616 | ||
9d7d6f95 FL |
617 | enum brcmf_sdio_frmtype { |
618 | BRCMF_SDIO_FT_NORMAL, | |
619 | BRCMF_SDIO_FT_SUPER, | |
620 | BRCMF_SDIO_FT_SUB, | |
621 | }; | |
622 | ||
5b435de0 AS |
623 | static void pkt_align(struct sk_buff *p, int len, int align) |
624 | { | |
625 | uint datalign; | |
626 | datalign = (unsigned long)(p->data); | |
627 | datalign = roundup(datalign, (align)) - datalign; | |
628 | if (datalign) | |
629 | skb_pull(p, datalign); | |
630 | __skb_trim(p, len); | |
631 | } | |
632 | ||
633 | /* To check if there's window offered */ | |
e92eedf4 | 634 | static bool data_ok(struct brcmf_sdio *bus) |
5b435de0 AS |
635 | { |
636 | return (u8)(bus->tx_max - bus->tx_seq) != 0 && | |
637 | ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0; | |
638 | } | |
639 | ||
640 | /* | |
641 | * Reads a register in the SDIO hardware block. This block occupies a series of | |
642 | * adresses on the 32 bit backplane bus. | |
643 | */ | |
58692750 FL |
644 | static int |
645 | r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) | |
5b435de0 | 646 | { |
99ba15cd | 647 | u8 idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); |
79ae3957 | 648 | int ret; |
58692750 FL |
649 | |
650 | *regvar = brcmf_sdio_regrl(bus->sdiodev, | |
651 | bus->ci->c_inf[idx].base + offset, &ret); | |
652 | ||
653 | return ret; | |
5b435de0 AS |
654 | } |
655 | ||
58692750 FL |
656 | static int |
657 | w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset) | |
5b435de0 | 658 | { |
99ba15cd | 659 | u8 idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); |
e13ce26b | 660 | int ret; |
58692750 FL |
661 | |
662 | brcmf_sdio_regwl(bus->sdiodev, | |
663 | bus->ci->c_inf[idx].base + reg_offset, | |
664 | regval, &ret); | |
665 | ||
666 | return ret; | |
5b435de0 AS |
667 | } |
668 | ||
669 | #define PKT_AVAILABLE() (intstatus & I_HMB_FRAME_IND) | |
670 | ||
671 | #define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) | |
672 | ||
5b435de0 | 673 | /* Turn backplane clock on or off */ |
e92eedf4 | 674 | static int brcmf_sdbrcm_htclk(struct brcmf_sdio *bus, bool on, bool pendok) |
5b435de0 AS |
675 | { |
676 | int err; | |
677 | u8 clkctl, clkreq, devctl; | |
678 | unsigned long timeout; | |
679 | ||
680 | brcmf_dbg(TRACE, "Enter\n"); | |
681 | ||
682 | clkctl = 0; | |
683 | ||
684 | if (on) { | |
685 | /* Request HT Avail */ | |
686 | clkreq = | |
687 | bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ; | |
688 | ||
3bba829f FL |
689 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
690 | clkreq, &err); | |
5b435de0 AS |
691 | if (err) { |
692 | brcmf_dbg(ERROR, "HT Avail request error: %d\n", err); | |
693 | return -EBADE; | |
694 | } | |
695 | ||
5b435de0 | 696 | /* Check current status */ |
45db339c FL |
697 | clkctl = brcmf_sdio_regrb(bus->sdiodev, |
698 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 AS |
699 | if (err) { |
700 | brcmf_dbg(ERROR, "HT Avail read error: %d\n", err); | |
701 | return -EBADE; | |
702 | } | |
703 | ||
704 | /* Go to pending and await interrupt if appropriate */ | |
705 | if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) { | |
706 | /* Allow only clock-available interrupt */ | |
45db339c FL |
707 | devctl = brcmf_sdio_regrb(bus->sdiodev, |
708 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 AS |
709 | if (err) { |
710 | brcmf_dbg(ERROR, "Devctl error setting CA: %d\n", | |
711 | err); | |
712 | return -EBADE; | |
713 | } | |
714 | ||
715 | devctl |= SBSDIO_DEVCTL_CA_INT_ONLY; | |
3bba829f FL |
716 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
717 | devctl, &err); | |
5b435de0 AS |
718 | brcmf_dbg(INFO, "CLKCTL: set PENDING\n"); |
719 | bus->clkstate = CLK_PENDING; | |
720 | ||
721 | return 0; | |
722 | } else if (bus->clkstate == CLK_PENDING) { | |
723 | /* Cancel CA-only interrupt filter */ | |
45db339c | 724 | devctl = brcmf_sdio_regrb(bus->sdiodev, |
5b435de0 AS |
725 | SBSDIO_DEVICE_CTL, &err); |
726 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; | |
3bba829f FL |
727 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
728 | devctl, &err); | |
5b435de0 AS |
729 | } |
730 | ||
731 | /* Otherwise, wait here (polling) for HT Avail */ | |
732 | timeout = jiffies + | |
733 | msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000); | |
734 | while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { | |
45db339c FL |
735 | clkctl = brcmf_sdio_regrb(bus->sdiodev, |
736 | SBSDIO_FUNC1_CHIPCLKCSR, | |
737 | &err); | |
5b435de0 AS |
738 | if (time_after(jiffies, timeout)) |
739 | break; | |
740 | else | |
741 | usleep_range(5000, 10000); | |
742 | } | |
743 | if (err) { | |
744 | brcmf_dbg(ERROR, "HT Avail request error: %d\n", err); | |
745 | return -EBADE; | |
746 | } | |
747 | if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { | |
748 | brcmf_dbg(ERROR, "HT Avail timeout (%d): clkctl 0x%02x\n", | |
749 | PMU_MAX_TRANSITION_DLY, clkctl); | |
750 | return -EBADE; | |
751 | } | |
752 | ||
753 | /* Mark clock available */ | |
754 | bus->clkstate = CLK_AVAIL; | |
755 | brcmf_dbg(INFO, "CLKCTL: turned ON\n"); | |
756 | ||
8ae74654 | 757 | #if defined(DEBUG) |
23677ce3 | 758 | if (!bus->alp_only) { |
5b435de0 AS |
759 | if (SBSDIO_ALPONLY(clkctl)) |
760 | brcmf_dbg(ERROR, "HT Clock should be on\n"); | |
761 | } | |
8ae74654 | 762 | #endif /* defined (DEBUG) */ |
5b435de0 AS |
763 | |
764 | bus->activity = true; | |
765 | } else { | |
766 | clkreq = 0; | |
767 | ||
768 | if (bus->clkstate == CLK_PENDING) { | |
769 | /* Cancel CA-only interrupt filter */ | |
45db339c FL |
770 | devctl = brcmf_sdio_regrb(bus->sdiodev, |
771 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 772 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
3bba829f FL |
773 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
774 | devctl, &err); | |
5b435de0 AS |
775 | } |
776 | ||
777 | bus->clkstate = CLK_SDONLY; | |
3bba829f FL |
778 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
779 | clkreq, &err); | |
5b435de0 AS |
780 | brcmf_dbg(INFO, "CLKCTL: turned OFF\n"); |
781 | if (err) { | |
782 | brcmf_dbg(ERROR, "Failed access turning clock off: %d\n", | |
783 | err); | |
784 | return -EBADE; | |
785 | } | |
786 | } | |
787 | return 0; | |
788 | } | |
789 | ||
790 | /* Change idle/active SD state */ | |
e92eedf4 | 791 | static int brcmf_sdbrcm_sdclk(struct brcmf_sdio *bus, bool on) |
5b435de0 AS |
792 | { |
793 | brcmf_dbg(TRACE, "Enter\n"); | |
794 | ||
795 | if (on) | |
796 | bus->clkstate = CLK_SDONLY; | |
797 | else | |
798 | bus->clkstate = CLK_NONE; | |
799 | ||
800 | return 0; | |
801 | } | |
802 | ||
803 | /* Transition SD and backplane clock readiness */ | |
e92eedf4 | 804 | static int brcmf_sdbrcm_clkctl(struct brcmf_sdio *bus, uint target, bool pendok) |
5b435de0 | 805 | { |
8ae74654 | 806 | #ifdef DEBUG |
5b435de0 | 807 | uint oldstate = bus->clkstate; |
8ae74654 | 808 | #endif /* DEBUG */ |
5b435de0 AS |
809 | |
810 | brcmf_dbg(TRACE, "Enter\n"); | |
811 | ||
812 | /* Early exit if we're already there */ | |
813 | if (bus->clkstate == target) { | |
814 | if (target == CLK_AVAIL) { | |
815 | brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); | |
816 | bus->activity = true; | |
817 | } | |
818 | return 0; | |
819 | } | |
820 | ||
821 | switch (target) { | |
822 | case CLK_AVAIL: | |
823 | /* Make sure SD clock is available */ | |
824 | if (bus->clkstate == CLK_NONE) | |
825 | brcmf_sdbrcm_sdclk(bus, true); | |
826 | /* Now request HT Avail on the backplane */ | |
827 | brcmf_sdbrcm_htclk(bus, true, pendok); | |
828 | brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); | |
829 | bus->activity = true; | |
830 | break; | |
831 | ||
832 | case CLK_SDONLY: | |
833 | /* Remove HT request, or bring up SD clock */ | |
834 | if (bus->clkstate == CLK_NONE) | |
835 | brcmf_sdbrcm_sdclk(bus, true); | |
836 | else if (bus->clkstate == CLK_AVAIL) | |
837 | brcmf_sdbrcm_htclk(bus, false, false); | |
838 | else | |
839 | brcmf_dbg(ERROR, "request for %d -> %d\n", | |
840 | bus->clkstate, target); | |
841 | brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); | |
842 | break; | |
843 | ||
844 | case CLK_NONE: | |
845 | /* Make sure to remove HT request */ | |
846 | if (bus->clkstate == CLK_AVAIL) | |
847 | brcmf_sdbrcm_htclk(bus, false, false); | |
848 | /* Now remove the SD clock */ | |
849 | brcmf_sdbrcm_sdclk(bus, false); | |
850 | brcmf_sdbrcm_wd_timer(bus, 0); | |
851 | break; | |
852 | } | |
8ae74654 | 853 | #ifdef DEBUG |
5b435de0 | 854 | brcmf_dbg(INFO, "%d -> %d\n", oldstate, bus->clkstate); |
8ae74654 | 855 | #endif /* DEBUG */ |
5b435de0 AS |
856 | |
857 | return 0; | |
858 | } | |
859 | ||
e92eedf4 | 860 | static u32 brcmf_sdbrcm_hostmail(struct brcmf_sdio *bus) |
5b435de0 AS |
861 | { |
862 | u32 intstatus = 0; | |
863 | u32 hmb_data; | |
864 | u8 fcbits; | |
58692750 | 865 | int ret; |
5b435de0 AS |
866 | |
867 | brcmf_dbg(TRACE, "Enter\n"); | |
868 | ||
869 | /* Read mailbox data and ack that we did so */ | |
58692750 FL |
870 | ret = r_sdreg32(bus, &hmb_data, |
871 | offsetof(struct sdpcmd_regs, tohostmailboxdata)); | |
5b435de0 | 872 | |
58692750 | 873 | if (ret == 0) |
5b435de0 | 874 | w_sdreg32(bus, SMB_INT_ACK, |
58692750 | 875 | offsetof(struct sdpcmd_regs, tosbmailbox)); |
80969836 | 876 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
877 | |
878 | /* Dongle recomposed rx frames, accept them again */ | |
879 | if (hmb_data & HMB_DATA_NAKHANDLED) { | |
880 | brcmf_dbg(INFO, "Dongle reports NAK handled, expect rtx of %d\n", | |
881 | bus->rx_seq); | |
882 | if (!bus->rxskip) | |
883 | brcmf_dbg(ERROR, "unexpected NAKHANDLED!\n"); | |
884 | ||
885 | bus->rxskip = false; | |
886 | intstatus |= I_HMB_FRAME_IND; | |
887 | } | |
888 | ||
889 | /* | |
890 | * DEVREADY does not occur with gSPI. | |
891 | */ | |
892 | if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { | |
893 | bus->sdpcm_ver = | |
894 | (hmb_data & HMB_DATA_VERSION_MASK) >> | |
895 | HMB_DATA_VERSION_SHIFT; | |
896 | if (bus->sdpcm_ver != SDPCM_PROT_VERSION) | |
897 | brcmf_dbg(ERROR, "Version mismatch, dongle reports %d, " | |
898 | "expecting %d\n", | |
899 | bus->sdpcm_ver, SDPCM_PROT_VERSION); | |
900 | else | |
901 | brcmf_dbg(INFO, "Dongle ready, protocol version %d\n", | |
902 | bus->sdpcm_ver); | |
903 | } | |
904 | ||
905 | /* | |
906 | * Flow Control has been moved into the RX headers and this out of band | |
907 | * method isn't used any more. | |
908 | * remaining backward compatible with older dongles. | |
909 | */ | |
910 | if (hmb_data & HMB_DATA_FC) { | |
911 | fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> | |
912 | HMB_DATA_FCDATA_SHIFT; | |
913 | ||
914 | if (fcbits & ~bus->flowcontrol) | |
80969836 | 915 | bus->sdcnt.fc_xoff++; |
5b435de0 AS |
916 | |
917 | if (bus->flowcontrol & ~fcbits) | |
80969836 | 918 | bus->sdcnt.fc_xon++; |
5b435de0 | 919 | |
80969836 | 920 | bus->sdcnt.fc_rcvd++; |
5b435de0 AS |
921 | bus->flowcontrol = fcbits; |
922 | } | |
923 | ||
924 | /* Shouldn't be any others */ | |
925 | if (hmb_data & ~(HMB_DATA_DEVREADY | | |
926 | HMB_DATA_NAKHANDLED | | |
927 | HMB_DATA_FC | | |
928 | HMB_DATA_FWREADY | | |
929 | HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) | |
930 | brcmf_dbg(ERROR, "Unknown mailbox data content: 0x%02x\n", | |
931 | hmb_data); | |
932 | ||
933 | return intstatus; | |
934 | } | |
935 | ||
e92eedf4 | 936 | static void brcmf_sdbrcm_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx) |
5b435de0 AS |
937 | { |
938 | uint retries = 0; | |
939 | u16 lastrbc; | |
940 | u8 hi, lo; | |
941 | int err; | |
942 | ||
943 | brcmf_dbg(ERROR, "%sterminate frame%s\n", | |
944 | abort ? "abort command, " : "", | |
945 | rtx ? ", send NAK" : ""); | |
946 | ||
947 | if (abort) | |
948 | brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); | |
949 | ||
3bba829f FL |
950 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
951 | SFC_RF_TERM, &err); | |
80969836 | 952 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
953 | |
954 | /* Wait until the packet has been flushed (device/FIFO stable) */ | |
955 | for (lastrbc = retries = 0xffff; retries > 0; retries--) { | |
45db339c | 956 | hi = brcmf_sdio_regrb(bus->sdiodev, |
5c15c23a | 957 | SBSDIO_FUNC1_RFRAMEBCHI, &err); |
45db339c | 958 | lo = brcmf_sdio_regrb(bus->sdiodev, |
5c15c23a | 959 | SBSDIO_FUNC1_RFRAMEBCLO, &err); |
80969836 | 960 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
961 | |
962 | if ((hi == 0) && (lo == 0)) | |
963 | break; | |
964 | ||
965 | if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) { | |
966 | brcmf_dbg(ERROR, "count growing: last 0x%04x now 0x%04x\n", | |
967 | lastrbc, (hi << 8) + lo); | |
968 | } | |
969 | lastrbc = (hi << 8) + lo; | |
970 | } | |
971 | ||
972 | if (!retries) | |
973 | brcmf_dbg(ERROR, "count never zeroed: last 0x%04x\n", lastrbc); | |
974 | else | |
975 | brcmf_dbg(INFO, "flush took %d iterations\n", 0xffff - retries); | |
976 | ||
977 | if (rtx) { | |
80969836 | 978 | bus->sdcnt.rxrtx++; |
58692750 FL |
979 | err = w_sdreg32(bus, SMB_NAK, |
980 | offsetof(struct sdpcmd_regs, tosbmailbox)); | |
5b435de0 | 981 | |
80969836 | 982 | bus->sdcnt.f1regdata++; |
58692750 | 983 | if (err == 0) |
5b435de0 AS |
984 | bus->rxskip = true; |
985 | } | |
986 | ||
987 | /* Clear partial in any case */ | |
4754fcee | 988 | bus->cur_read.len = 0; |
5b435de0 AS |
989 | |
990 | /* If we can't reach the device, signal failure */ | |
5c15c23a | 991 | if (err) |
712ac5b3 | 992 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
993 | } |
994 | ||
20e5ca16 | 995 | /* copy a buffer into a pkt buffer chain */ |
e92eedf4 | 996 | static uint brcmf_sdbrcm_glom_from_buf(struct brcmf_sdio *bus, uint len) |
20e5ca16 AS |
997 | { |
998 | uint n, ret = 0; | |
999 | struct sk_buff *p; | |
1000 | u8 *buf; | |
1001 | ||
20e5ca16 AS |
1002 | buf = bus->dataptr; |
1003 | ||
1004 | /* copy the data */ | |
b83db862 | 1005 | skb_queue_walk(&bus->glom, p) { |
20e5ca16 AS |
1006 | n = min_t(uint, p->len, len); |
1007 | memcpy(p->data, buf, n); | |
1008 | buf += n; | |
1009 | len -= n; | |
1010 | ret += n; | |
b83db862 AS |
1011 | if (!len) |
1012 | break; | |
20e5ca16 AS |
1013 | } |
1014 | ||
1015 | return ret; | |
1016 | } | |
1017 | ||
9a95e60e | 1018 | /* return total length of buffer chain */ |
e92eedf4 | 1019 | static uint brcmf_sdbrcm_glom_len(struct brcmf_sdio *bus) |
9a95e60e AS |
1020 | { |
1021 | struct sk_buff *p; | |
1022 | uint total; | |
1023 | ||
1024 | total = 0; | |
1025 | skb_queue_walk(&bus->glom, p) | |
1026 | total += p->len; | |
1027 | return total; | |
1028 | } | |
1029 | ||
e92eedf4 | 1030 | static void brcmf_sdbrcm_free_glom(struct brcmf_sdio *bus) |
046808da AS |
1031 | { |
1032 | struct sk_buff *cur, *next; | |
1033 | ||
1034 | skb_queue_walk_safe(&bus->glom, cur, next) { | |
1035 | skb_unlink(cur, &bus->glom); | |
1036 | brcmu_pkt_buf_free_skb(cur); | |
1037 | } | |
1038 | } | |
1039 | ||
4754fcee | 1040 | static bool brcmf_sdio_hdparser(struct brcmf_sdio *bus, u8 *header, |
9d7d6f95 FL |
1041 | struct brcmf_sdio_read *rd, |
1042 | enum brcmf_sdio_frmtype type) | |
4754fcee FL |
1043 | { |
1044 | u16 len, checksum; | |
1045 | u8 rx_seq, fc, tx_seq_max; | |
1046 | ||
1047 | /* | |
1048 | * 4 bytes hardware header (frame tag) | |
1049 | * Byte 0~1: Frame length | |
1050 | * Byte 2~3: Checksum, bit-wise inverse of frame length | |
1051 | */ | |
1052 | len = get_unaligned_le16(header); | |
1053 | checksum = get_unaligned_le16(header + sizeof(u16)); | |
1054 | /* All zero means no more to read */ | |
1055 | if (!(len | checksum)) { | |
1056 | bus->rxpending = false; | |
1057 | return false; | |
1058 | } | |
1059 | if ((u16)(~(len ^ checksum))) { | |
1060 | brcmf_dbg(ERROR, "HW header checksum error\n"); | |
1061 | bus->sdcnt.rx_badhdr++; | |
1062 | brcmf_sdbrcm_rxfail(bus, false, false); | |
1063 | return false; | |
1064 | } | |
1065 | if (len < SDPCM_HDRLEN) { | |
1066 | brcmf_dbg(ERROR, "HW header length error\n"); | |
1067 | return false; | |
1068 | } | |
9d7d6f95 FL |
1069 | if (type == BRCMF_SDIO_FT_SUPER && |
1070 | (roundup(len, bus->blocksize) != rd->len)) { | |
1071 | brcmf_dbg(ERROR, "HW superframe header length error\n"); | |
1072 | return false; | |
1073 | } | |
1074 | if (type == BRCMF_SDIO_FT_SUB && len > rd->len) { | |
1075 | brcmf_dbg(ERROR, "HW subframe header length error\n"); | |
1076 | return false; | |
1077 | } | |
4754fcee FL |
1078 | rd->len = len; |
1079 | ||
1080 | /* | |
1081 | * 8 bytes hardware header | |
1082 | * Byte 0: Rx sequence number | |
1083 | * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag | |
1084 | * Byte 2: Length of next data frame | |
1085 | * Byte 3: Data offset | |
1086 | * Byte 4: Flow control bits | |
1087 | * Byte 5: Maximum Sequence number allow for Tx | |
1088 | * Byte 6~7: Reserved | |
1089 | */ | |
9d7d6f95 FL |
1090 | if (type == BRCMF_SDIO_FT_SUPER && |
1091 | SDPCM_GLOMDESC(&header[SDPCM_FRAMETAG_LEN])) { | |
1092 | brcmf_dbg(ERROR, "Glom descriptor found in superframe head\n"); | |
1093 | rd->len = 0; | |
1094 | return false; | |
1095 | } | |
4754fcee FL |
1096 | rx_seq = SDPCM_PACKET_SEQUENCE(&header[SDPCM_FRAMETAG_LEN]); |
1097 | rd->channel = SDPCM_PACKET_CHANNEL(&header[SDPCM_FRAMETAG_LEN]); | |
9d7d6f95 FL |
1098 | if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL && |
1099 | type != BRCMF_SDIO_FT_SUPER) { | |
4754fcee FL |
1100 | brcmf_dbg(ERROR, "HW header length too long\n"); |
1101 | bus->sdiodev->bus_if->dstats.rx_errors++; | |
1102 | bus->sdcnt.rx_toolong++; | |
1103 | brcmf_sdbrcm_rxfail(bus, false, false); | |
1104 | rd->len = 0; | |
1105 | return false; | |
1106 | } | |
9d7d6f95 FL |
1107 | if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) { |
1108 | brcmf_dbg(ERROR, "Wrong channel for superframe\n"); | |
1109 | rd->len = 0; | |
1110 | return false; | |
1111 | } | |
1112 | if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL && | |
1113 | rd->channel != SDPCM_EVENT_CHANNEL) { | |
1114 | brcmf_dbg(ERROR, "Wrong channel for subframe\n"); | |
1115 | rd->len = 0; | |
1116 | return false; | |
1117 | } | |
4754fcee FL |
1118 | rd->dat_offset = SDPCM_DOFFSET_VALUE(&header[SDPCM_FRAMETAG_LEN]); |
1119 | if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) { | |
1120 | brcmf_dbg(ERROR, "seq %d: bad data offset\n", rx_seq); | |
1121 | bus->sdcnt.rx_badhdr++; | |
1122 | brcmf_sdbrcm_rxfail(bus, false, false); | |
1123 | rd->len = 0; | |
1124 | return false; | |
1125 | } | |
1126 | if (rd->seq_num != rx_seq) { | |
1127 | brcmf_dbg(ERROR, "seq %d: sequence number error, expect %d\n", | |
1128 | rx_seq, rd->seq_num); | |
1129 | bus->sdcnt.rx_badseq++; | |
1130 | rd->seq_num = rx_seq; | |
1131 | } | |
9d7d6f95 FL |
1132 | /* no need to check the reset for subframe */ |
1133 | if (type == BRCMF_SDIO_FT_SUB) | |
1134 | return true; | |
4754fcee FL |
1135 | rd->len_nxtfrm = header[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET]; |
1136 | if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) { | |
1137 | /* only warm for NON glom packet */ | |
1138 | if (rd->channel != SDPCM_GLOM_CHANNEL) | |
1139 | brcmf_dbg(ERROR, "seq %d: next length error\n", rx_seq); | |
1140 | rd->len_nxtfrm = 0; | |
1141 | } | |
1142 | fc = SDPCM_FCMASK_VALUE(&header[SDPCM_FRAMETAG_LEN]); | |
1143 | if (bus->flowcontrol != fc) { | |
1144 | if (~bus->flowcontrol & fc) | |
1145 | bus->sdcnt.fc_xoff++; | |
1146 | if (bus->flowcontrol & ~fc) | |
1147 | bus->sdcnt.fc_xon++; | |
1148 | bus->sdcnt.fc_rcvd++; | |
1149 | bus->flowcontrol = fc; | |
1150 | } | |
1151 | tx_seq_max = SDPCM_WINDOW_VALUE(&header[SDPCM_FRAMETAG_LEN]); | |
1152 | if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) { | |
1153 | brcmf_dbg(ERROR, "seq %d: max tx seq number error\n", rx_seq); | |
1154 | tx_seq_max = bus->tx_seq + 2; | |
1155 | } | |
1156 | bus->tx_max = tx_seq_max; | |
1157 | ||
1158 | return true; | |
1159 | } | |
1160 | ||
e92eedf4 | 1161 | static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq) |
5b435de0 AS |
1162 | { |
1163 | u16 dlen, totlen; | |
1164 | u8 *dptr, num = 0; | |
1165 | ||
9d7d6f95 | 1166 | u16 sublen; |
0b45bf74 | 1167 | struct sk_buff *pfirst, *pnext; |
5b435de0 AS |
1168 | |
1169 | int errcode; | |
9d7d6f95 | 1170 | u8 doff, sfdoff; |
5b435de0 AS |
1171 | |
1172 | int ifidx = 0; | |
1173 | bool usechain = bus->use_rxchain; | |
9d7d6f95 FL |
1174 | |
1175 | struct brcmf_sdio_read rd_new; | |
5b435de0 AS |
1176 | |
1177 | /* If packets, issue read(s) and send up packet chain */ | |
1178 | /* Return sequence numbers consumed? */ | |
1179 | ||
b83db862 AS |
1180 | brcmf_dbg(TRACE, "start: glomd %p glom %p\n", |
1181 | bus->glomd, skb_peek(&bus->glom)); | |
5b435de0 AS |
1182 | |
1183 | /* If there's a descriptor, generate the packet chain */ | |
1184 | if (bus->glomd) { | |
0b45bf74 | 1185 | pfirst = pnext = NULL; |
5b435de0 AS |
1186 | dlen = (u16) (bus->glomd->len); |
1187 | dptr = bus->glomd->data; | |
1188 | if (!dlen || (dlen & 1)) { | |
1189 | brcmf_dbg(ERROR, "bad glomd len(%d), ignore descriptor\n", | |
1190 | dlen); | |
1191 | dlen = 0; | |
1192 | } | |
1193 | ||
1194 | for (totlen = num = 0; dlen; num++) { | |
1195 | /* Get (and move past) next length */ | |
1196 | sublen = get_unaligned_le16(dptr); | |
1197 | dlen -= sizeof(u16); | |
1198 | dptr += sizeof(u16); | |
1199 | if ((sublen < SDPCM_HDRLEN) || | |
1200 | ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) { | |
1201 | brcmf_dbg(ERROR, "descriptor len %d bad: %d\n", | |
1202 | num, sublen); | |
1203 | pnext = NULL; | |
1204 | break; | |
1205 | } | |
1206 | if (sublen % BRCMF_SDALIGN) { | |
1207 | brcmf_dbg(ERROR, "sublen %d not multiple of %d\n", | |
1208 | sublen, BRCMF_SDALIGN); | |
1209 | usechain = false; | |
1210 | } | |
1211 | totlen += sublen; | |
1212 | ||
1213 | /* For last frame, adjust read len so total | |
1214 | is a block multiple */ | |
1215 | if (!dlen) { | |
1216 | sublen += | |
1217 | (roundup(totlen, bus->blocksize) - totlen); | |
1218 | totlen = roundup(totlen, bus->blocksize); | |
1219 | } | |
1220 | ||
1221 | /* Allocate/chain packet for next subframe */ | |
1222 | pnext = brcmu_pkt_buf_get_skb(sublen + BRCMF_SDALIGN); | |
1223 | if (pnext == NULL) { | |
1224 | brcmf_dbg(ERROR, "bcm_pkt_buf_get_skb failed, num %d len %d\n", | |
1225 | num, sublen); | |
1226 | break; | |
1227 | } | |
b83db862 | 1228 | skb_queue_tail(&bus->glom, pnext); |
5b435de0 AS |
1229 | |
1230 | /* Adhere to start alignment requirements */ | |
1231 | pkt_align(pnext, sublen, BRCMF_SDALIGN); | |
1232 | } | |
1233 | ||
1234 | /* If all allocations succeeded, save packet chain | |
1235 | in bus structure */ | |
1236 | if (pnext) { | |
1237 | brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n", | |
1238 | totlen, num); | |
4754fcee FL |
1239 | if (BRCMF_GLOM_ON() && bus->cur_read.len && |
1240 | totlen != bus->cur_read.len) { | |
5b435de0 | 1241 | brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n", |
4754fcee | 1242 | bus->cur_read.len, totlen, rxseq); |
5b435de0 | 1243 | } |
5b435de0 AS |
1244 | pfirst = pnext = NULL; |
1245 | } else { | |
046808da | 1246 | brcmf_sdbrcm_free_glom(bus); |
5b435de0 AS |
1247 | num = 0; |
1248 | } | |
1249 | ||
1250 | /* Done with descriptor packet */ | |
1251 | brcmu_pkt_buf_free_skb(bus->glomd); | |
1252 | bus->glomd = NULL; | |
4754fcee | 1253 | bus->cur_read.len = 0; |
5b435de0 AS |
1254 | } |
1255 | ||
1256 | /* Ok -- either we just generated a packet chain, | |
1257 | or had one from before */ | |
b83db862 | 1258 | if (!skb_queue_empty(&bus->glom)) { |
5b435de0 AS |
1259 | if (BRCMF_GLOM_ON()) { |
1260 | brcmf_dbg(GLOM, "try superframe read, packet chain:\n"); | |
b83db862 | 1261 | skb_queue_walk(&bus->glom, pnext) { |
5b435de0 AS |
1262 | brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n", |
1263 | pnext, (u8 *) (pnext->data), | |
1264 | pnext->len, pnext->len); | |
1265 | } | |
1266 | } | |
1267 | ||
b83db862 | 1268 | pfirst = skb_peek(&bus->glom); |
9a95e60e | 1269 | dlen = (u16) brcmf_sdbrcm_glom_len(bus); |
5b435de0 AS |
1270 | |
1271 | /* Do an SDIO read for the superframe. Configurable iovar to | |
1272 | * read directly into the chained packet, or allocate a large | |
1273 | * packet and and copy into the chain. | |
1274 | */ | |
38b0b0dd | 1275 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 1276 | if (usechain) { |
5adfeb63 | 1277 | errcode = brcmf_sdcard_recv_chain(bus->sdiodev, |
5b435de0 | 1278 | bus->sdiodev->sbwad, |
5adfeb63 | 1279 | SDIO_FUNC_2, F2SYNC, &bus->glom); |
5b435de0 AS |
1280 | } else if (bus->dataptr) { |
1281 | errcode = brcmf_sdcard_recv_buf(bus->sdiodev, | |
1282 | bus->sdiodev->sbwad, | |
5adfeb63 AS |
1283 | SDIO_FUNC_2, F2SYNC, |
1284 | bus->dataptr, dlen); | |
20e5ca16 | 1285 | sublen = (u16) brcmf_sdbrcm_glom_from_buf(bus, dlen); |
5b435de0 AS |
1286 | if (sublen != dlen) { |
1287 | brcmf_dbg(ERROR, "FAILED TO COPY, dlen %d sublen %d\n", | |
1288 | dlen, sublen); | |
1289 | errcode = -1; | |
1290 | } | |
1291 | pnext = NULL; | |
1292 | } else { | |
1293 | brcmf_dbg(ERROR, "COULDN'T ALLOC %d-BYTE GLOM, FORCE FAILURE\n", | |
1294 | dlen); | |
1295 | errcode = -1; | |
1296 | } | |
38b0b0dd | 1297 | sdio_release_host(bus->sdiodev->func[1]); |
80969836 | 1298 | bus->sdcnt.f2rxdata++; |
5b435de0 AS |
1299 | |
1300 | /* On failure, kill the superframe, allow a couple retries */ | |
1301 | if (errcode < 0) { | |
1302 | brcmf_dbg(ERROR, "glom read of %d bytes failed: %d\n", | |
1303 | dlen, errcode); | |
719f2733 | 1304 | bus->sdiodev->bus_if->dstats.rx_errors++; |
5b435de0 | 1305 | |
38b0b0dd | 1306 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1307 | if (bus->glomerr++ < 3) { |
1308 | brcmf_sdbrcm_rxfail(bus, true, true); | |
1309 | } else { | |
1310 | bus->glomerr = 0; | |
1311 | brcmf_sdbrcm_rxfail(bus, true, false); | |
80969836 | 1312 | bus->sdcnt.rxglomfail++; |
046808da | 1313 | brcmf_sdbrcm_free_glom(bus); |
5b435de0 | 1314 | } |
38b0b0dd | 1315 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1316 | return 0; |
1317 | } | |
1e023829 JP |
1318 | |
1319 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), | |
1320 | pfirst->data, min_t(int, pfirst->len, 48), | |
1321 | "SUPERFRAME:\n"); | |
5b435de0 | 1322 | |
9d7d6f95 FL |
1323 | rd_new.seq_num = rxseq; |
1324 | rd_new.len = dlen; | |
38b0b0dd | 1325 | sdio_claim_host(bus->sdiodev->func[1]); |
9d7d6f95 FL |
1326 | errcode = -!brcmf_sdio_hdparser(bus, pfirst->data, &rd_new, |
1327 | BRCMF_SDIO_FT_SUPER); | |
38b0b0dd | 1328 | sdio_release_host(bus->sdiodev->func[1]); |
9d7d6f95 | 1329 | bus->cur_read.len = rd_new.len_nxtfrm << 4; |
5b435de0 AS |
1330 | |
1331 | /* Remove superframe header, remember offset */ | |
9d7d6f95 FL |
1332 | skb_pull(pfirst, rd_new.dat_offset); |
1333 | sfdoff = rd_new.dat_offset; | |
0b45bf74 | 1334 | num = 0; |
5b435de0 AS |
1335 | |
1336 | /* Validate all the subframe headers */ | |
0b45bf74 AS |
1337 | skb_queue_walk(&bus->glom, pnext) { |
1338 | /* leave when invalid subframe is found */ | |
1339 | if (errcode) | |
1340 | break; | |
1341 | ||
9d7d6f95 FL |
1342 | rd_new.len = pnext->len; |
1343 | rd_new.seq_num = rxseq++; | |
38b0b0dd | 1344 | sdio_claim_host(bus->sdiodev->func[1]); |
9d7d6f95 FL |
1345 | errcode = -!brcmf_sdio_hdparser(bus, pnext->data, |
1346 | &rd_new, | |
1347 | BRCMF_SDIO_FT_SUB); | |
38b0b0dd | 1348 | sdio_release_host(bus->sdiodev->func[1]); |
1e023829 | 1349 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
9d7d6f95 | 1350 | pnext->data, 32, "subframe:\n"); |
5b435de0 | 1351 | |
0b45bf74 | 1352 | num++; |
5b435de0 AS |
1353 | } |
1354 | ||
1355 | if (errcode) { | |
1356 | /* Terminate frame on error, request | |
1357 | a couple retries */ | |
38b0b0dd | 1358 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1359 | if (bus->glomerr++ < 3) { |
1360 | /* Restore superframe header space */ | |
1361 | skb_push(pfirst, sfdoff); | |
1362 | brcmf_sdbrcm_rxfail(bus, true, true); | |
1363 | } else { | |
1364 | bus->glomerr = 0; | |
1365 | brcmf_sdbrcm_rxfail(bus, true, false); | |
80969836 | 1366 | bus->sdcnt.rxglomfail++; |
046808da | 1367 | brcmf_sdbrcm_free_glom(bus); |
5b435de0 | 1368 | } |
38b0b0dd | 1369 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee | 1370 | bus->cur_read.len = 0; |
5b435de0 AS |
1371 | return 0; |
1372 | } | |
1373 | ||
1374 | /* Basic SD framing looks ok - process each packet (header) */ | |
5b435de0 | 1375 | |
0b45bf74 | 1376 | skb_queue_walk_safe(&bus->glom, pfirst, pnext) { |
5b435de0 AS |
1377 | dptr = (u8 *) (pfirst->data); |
1378 | sublen = get_unaligned_le16(dptr); | |
5b435de0 AS |
1379 | doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]); |
1380 | ||
1e023829 | 1381 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), |
9d7d6f95 FL |
1382 | dptr, pfirst->len, |
1383 | "Rx Subframe Data:\n"); | |
5b435de0 AS |
1384 | |
1385 | __skb_trim(pfirst, sublen); | |
1386 | skb_pull(pfirst, doff); | |
1387 | ||
1388 | if (pfirst->len == 0) { | |
0b45bf74 | 1389 | skb_unlink(pfirst, &bus->glom); |
5b435de0 | 1390 | brcmu_pkt_buf_free_skb(pfirst); |
5b435de0 | 1391 | continue; |
d5625ee6 FL |
1392 | } else if (brcmf_proto_hdrpull(bus->sdiodev->dev, |
1393 | &ifidx, pfirst) != 0) { | |
5b435de0 | 1394 | brcmf_dbg(ERROR, "rx protocol error\n"); |
719f2733 | 1395 | bus->sdiodev->bus_if->dstats.rx_errors++; |
0b45bf74 | 1396 | skb_unlink(pfirst, &bus->glom); |
5b435de0 | 1397 | brcmu_pkt_buf_free_skb(pfirst); |
5b435de0 AS |
1398 | continue; |
1399 | } | |
1400 | ||
1e023829 JP |
1401 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
1402 | pfirst->data, | |
1403 | min_t(int, pfirst->len, 32), | |
1404 | "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n", | |
1405 | bus->glom.qlen, pfirst, pfirst->data, | |
1406 | pfirst->len, pfirst->next, | |
1407 | pfirst->prev); | |
5b435de0 | 1408 | } |
0b45bf74 | 1409 | /* sent any remaining packets up */ |
7cdf57d3 | 1410 | if (bus->glom.qlen) |
228bb43d | 1411 | brcmf_rx_frame(bus->sdiodev->dev, ifidx, &bus->glom); |
5b435de0 | 1412 | |
80969836 AS |
1413 | bus->sdcnt.rxglomframes++; |
1414 | bus->sdcnt.rxglompkts += bus->glom.qlen; | |
5b435de0 AS |
1415 | } |
1416 | return num; | |
1417 | } | |
1418 | ||
e92eedf4 | 1419 | static int brcmf_sdbrcm_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition, |
5b435de0 AS |
1420 | bool *pending) |
1421 | { | |
1422 | DECLARE_WAITQUEUE(wait, current); | |
1423 | int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT); | |
1424 | ||
1425 | /* Wait until control frame is available */ | |
1426 | add_wait_queue(&bus->dcmd_resp_wait, &wait); | |
1427 | set_current_state(TASK_INTERRUPTIBLE); | |
1428 | ||
1429 | while (!(*condition) && (!signal_pending(current) && timeout)) | |
1430 | timeout = schedule_timeout(timeout); | |
1431 | ||
1432 | if (signal_pending(current)) | |
1433 | *pending = true; | |
1434 | ||
1435 | set_current_state(TASK_RUNNING); | |
1436 | remove_wait_queue(&bus->dcmd_resp_wait, &wait); | |
1437 | ||
1438 | return timeout; | |
1439 | } | |
1440 | ||
e92eedf4 | 1441 | static int brcmf_sdbrcm_dcmd_resp_wake(struct brcmf_sdio *bus) |
5b435de0 AS |
1442 | { |
1443 | if (waitqueue_active(&bus->dcmd_resp_wait)) | |
1444 | wake_up_interruptible(&bus->dcmd_resp_wait); | |
1445 | ||
1446 | return 0; | |
1447 | } | |
1448 | static void | |
e92eedf4 | 1449 | brcmf_sdbrcm_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff) |
5b435de0 AS |
1450 | { |
1451 | uint rdlen, pad; | |
dd43a01c | 1452 | u8 *buf = NULL, *rbuf; |
5b435de0 AS |
1453 | int sdret; |
1454 | ||
1455 | brcmf_dbg(TRACE, "Enter\n"); | |
1456 | ||
dd43a01c FL |
1457 | if (bus->rxblen) |
1458 | buf = vzalloc(bus->rxblen); | |
1459 | if (!buf) { | |
1460 | brcmf_dbg(ERROR, "no memory for control frame\n"); | |
1461 | goto done; | |
1462 | } | |
1463 | rbuf = bus->rxbuf; | |
1464 | pad = ((unsigned long)rbuf % BRCMF_SDALIGN); | |
5b435de0 | 1465 | if (pad) |
dd43a01c | 1466 | rbuf += (BRCMF_SDALIGN - pad); |
5b435de0 AS |
1467 | |
1468 | /* Copy the already-read portion over */ | |
dd43a01c | 1469 | memcpy(buf, hdr, BRCMF_FIRSTREAD); |
5b435de0 AS |
1470 | if (len <= BRCMF_FIRSTREAD) |
1471 | goto gotpkt; | |
1472 | ||
1473 | /* Raise rdlen to next SDIO block to avoid tail command */ | |
1474 | rdlen = len - BRCMF_FIRSTREAD; | |
1475 | if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { | |
1476 | pad = bus->blocksize - (rdlen % bus->blocksize); | |
1477 | if ((pad <= bus->roundup) && (pad < bus->blocksize) && | |
b01a6b3c | 1478 | ((len + pad) < bus->sdiodev->bus_if->maxctl)) |
5b435de0 AS |
1479 | rdlen += pad; |
1480 | } else if (rdlen % BRCMF_SDALIGN) { | |
1481 | rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN); | |
1482 | } | |
1483 | ||
1484 | /* Satisfy length-alignment requirements */ | |
1485 | if (rdlen & (ALIGNMENT - 1)) | |
1486 | rdlen = roundup(rdlen, ALIGNMENT); | |
1487 | ||
1488 | /* Drop if the read is too big or it exceeds our maximum */ | |
b01a6b3c | 1489 | if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) { |
5b435de0 | 1490 | brcmf_dbg(ERROR, "%d-byte control read exceeds %d-byte buffer\n", |
b01a6b3c | 1491 | rdlen, bus->sdiodev->bus_if->maxctl); |
719f2733 | 1492 | bus->sdiodev->bus_if->dstats.rx_errors++; |
5b435de0 AS |
1493 | brcmf_sdbrcm_rxfail(bus, false, false); |
1494 | goto done; | |
1495 | } | |
1496 | ||
b01a6b3c | 1497 | if ((len - doff) > bus->sdiodev->bus_if->maxctl) { |
5b435de0 | 1498 | brcmf_dbg(ERROR, "%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n", |
b01a6b3c | 1499 | len, len - doff, bus->sdiodev->bus_if->maxctl); |
719f2733 | 1500 | bus->sdiodev->bus_if->dstats.rx_errors++; |
80969836 | 1501 | bus->sdcnt.rx_toolong++; |
5b435de0 AS |
1502 | brcmf_sdbrcm_rxfail(bus, false, false); |
1503 | goto done; | |
1504 | } | |
1505 | ||
dd43a01c | 1506 | /* Read remain of frame body */ |
5b435de0 AS |
1507 | sdret = brcmf_sdcard_recv_buf(bus->sdiodev, |
1508 | bus->sdiodev->sbwad, | |
1509 | SDIO_FUNC_2, | |
dd43a01c | 1510 | F2SYNC, rbuf, rdlen); |
80969836 | 1511 | bus->sdcnt.f2rxdata++; |
5b435de0 AS |
1512 | |
1513 | /* Control frame failures need retransmission */ | |
1514 | if (sdret < 0) { | |
1515 | brcmf_dbg(ERROR, "read %d control bytes failed: %d\n", | |
1516 | rdlen, sdret); | |
80969836 | 1517 | bus->sdcnt.rxc_errors++; |
5b435de0 AS |
1518 | brcmf_sdbrcm_rxfail(bus, true, true); |
1519 | goto done; | |
dd43a01c FL |
1520 | } else |
1521 | memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen); | |
5b435de0 AS |
1522 | |
1523 | gotpkt: | |
1524 | ||
1e023829 | 1525 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), |
dd43a01c | 1526 | buf, len, "RxCtrl:\n"); |
5b435de0 AS |
1527 | |
1528 | /* Point to valid data and indicate its length */ | |
dd43a01c FL |
1529 | spin_lock_bh(&bus->rxctl_lock); |
1530 | if (bus->rxctl) { | |
1531 | brcmf_dbg(ERROR, "last control frame is being processed.\n"); | |
1532 | spin_unlock_bh(&bus->rxctl_lock); | |
1533 | vfree(buf); | |
1534 | goto done; | |
1535 | } | |
1536 | bus->rxctl = buf + doff; | |
1537 | bus->rxctl_orig = buf; | |
5b435de0 | 1538 | bus->rxlen = len - doff; |
dd43a01c | 1539 | spin_unlock_bh(&bus->rxctl_lock); |
5b435de0 AS |
1540 | |
1541 | done: | |
1542 | /* Awake any waiters */ | |
1543 | brcmf_sdbrcm_dcmd_resp_wake(bus); | |
1544 | } | |
1545 | ||
1546 | /* Pad read to blocksize for efficiency */ | |
e92eedf4 | 1547 | static void brcmf_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen) |
5b435de0 AS |
1548 | { |
1549 | if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) { | |
1550 | *pad = bus->blocksize - (*rdlen % bus->blocksize); | |
1551 | if (*pad <= bus->roundup && *pad < bus->blocksize && | |
1552 | *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ) | |
1553 | *rdlen += *pad; | |
1554 | } else if (*rdlen % BRCMF_SDALIGN) { | |
1555 | *rdlen += BRCMF_SDALIGN - (*rdlen % BRCMF_SDALIGN); | |
1556 | } | |
1557 | } | |
1558 | ||
4754fcee | 1559 | static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes) |
5b435de0 | 1560 | { |
5b435de0 AS |
1561 | struct sk_buff *pkt; /* Packet for event or data frames */ |
1562 | u16 pad; /* Number of pad bytes to read */ | |
5b435de0 AS |
1563 | uint rxleft = 0; /* Remaining number of frames allowed */ |
1564 | int sdret; /* Return code from calls */ | |
5b435de0 AS |
1565 | int ifidx = 0; |
1566 | uint rxcount = 0; /* Total frames read */ | |
4754fcee FL |
1567 | struct brcmf_sdio_read *rd = &bus->cur_read, rd_new; |
1568 | u8 head_read = 0; | |
5b435de0 AS |
1569 | |
1570 | brcmf_dbg(TRACE, "Enter\n"); | |
1571 | ||
1572 | /* Not finished unless we encounter no more frames indication */ | |
4754fcee | 1573 | bus->rxpending = true; |
5b435de0 | 1574 | |
4754fcee | 1575 | for (rd->seq_num = bus->rx_seq, rxleft = maxframes; |
8d169aa0 | 1576 | !bus->rxskip && rxleft && |
712ac5b3 | 1577 | bus->sdiodev->bus_if->state != BRCMF_BUS_DOWN; |
4754fcee | 1578 | rd->seq_num++, rxleft--) { |
5b435de0 AS |
1579 | |
1580 | /* Handle glomming separately */ | |
b83db862 | 1581 | if (bus->glomd || !skb_queue_empty(&bus->glom)) { |
5b435de0 AS |
1582 | u8 cnt; |
1583 | brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n", | |
b83db862 | 1584 | bus->glomd, skb_peek(&bus->glom)); |
4754fcee | 1585 | cnt = brcmf_sdbrcm_rxglom(bus, rd->seq_num); |
5b435de0 | 1586 | brcmf_dbg(GLOM, "rxglom returned %d\n", cnt); |
4754fcee | 1587 | rd->seq_num += cnt - 1; |
5b435de0 AS |
1588 | rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1; |
1589 | continue; | |
1590 | } | |
1591 | ||
4754fcee FL |
1592 | rd->len_left = rd->len; |
1593 | /* read header first for unknow frame length */ | |
38b0b0dd | 1594 | sdio_claim_host(bus->sdiodev->func[1]); |
4754fcee FL |
1595 | if (!rd->len) { |
1596 | sdret = brcmf_sdcard_recv_buf(bus->sdiodev, | |
1597 | bus->sdiodev->sbwad, | |
1598 | SDIO_FUNC_2, F2SYNC, | |
1599 | bus->rxhdr, | |
1600 | BRCMF_FIRSTREAD); | |
1601 | bus->sdcnt.f2rxhdrs++; | |
1602 | if (sdret < 0) { | |
1603 | brcmf_dbg(ERROR, "RXHEADER FAILED: %d\n", | |
1604 | sdret); | |
1605 | bus->sdcnt.rx_hdrfail++; | |
1606 | brcmf_sdbrcm_rxfail(bus, true, true); | |
38b0b0dd | 1607 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1608 | continue; |
5b435de0 | 1609 | } |
5b435de0 | 1610 | |
4754fcee | 1611 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(), |
1e023829 JP |
1612 | bus->rxhdr, SDPCM_HDRLEN, |
1613 | "RxHdr:\n"); | |
5b435de0 | 1614 | |
9d7d6f95 FL |
1615 | if (!brcmf_sdio_hdparser(bus, bus->rxhdr, rd, |
1616 | BRCMF_SDIO_FT_NORMAL)) { | |
38b0b0dd | 1617 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1618 | if (!bus->rxpending) |
1619 | break; | |
1620 | else | |
1621 | continue; | |
5b435de0 AS |
1622 | } |
1623 | ||
4754fcee FL |
1624 | if (rd->channel == SDPCM_CONTROL_CHANNEL) { |
1625 | brcmf_sdbrcm_read_control(bus, bus->rxhdr, | |
1626 | rd->len, | |
1627 | rd->dat_offset); | |
1628 | /* prepare the descriptor for the next read */ | |
1629 | rd->len = rd->len_nxtfrm << 4; | |
1630 | rd->len_nxtfrm = 0; | |
1631 | /* treat all packet as event if we don't know */ | |
1632 | rd->channel = SDPCM_EVENT_CHANNEL; | |
38b0b0dd | 1633 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1634 | continue; |
1635 | } | |
4754fcee FL |
1636 | rd->len_left = rd->len > BRCMF_FIRSTREAD ? |
1637 | rd->len - BRCMF_FIRSTREAD : 0; | |
1638 | head_read = BRCMF_FIRSTREAD; | |
5b435de0 AS |
1639 | } |
1640 | ||
4754fcee | 1641 | brcmf_pad(bus, &pad, &rd->len_left); |
5b435de0 | 1642 | |
4754fcee FL |
1643 | pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read + |
1644 | BRCMF_SDALIGN); | |
5b435de0 AS |
1645 | if (!pkt) { |
1646 | /* Give up on data, request rtx of events */ | |
4754fcee | 1647 | brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed\n"); |
719f2733 | 1648 | bus->sdiodev->bus_if->dstats.rx_dropped++; |
4754fcee FL |
1649 | brcmf_sdbrcm_rxfail(bus, false, |
1650 | RETRYCHAN(rd->channel)); | |
38b0b0dd | 1651 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1652 | continue; |
1653 | } | |
4754fcee FL |
1654 | skb_pull(pkt, head_read); |
1655 | pkt_align(pkt, rd->len_left, BRCMF_SDALIGN); | |
5b435de0 | 1656 | |
5adfeb63 AS |
1657 | sdret = brcmf_sdcard_recv_pkt(bus->sdiodev, bus->sdiodev->sbwad, |
1658 | SDIO_FUNC_2, F2SYNC, pkt); | |
80969836 | 1659 | bus->sdcnt.f2rxdata++; |
38b0b0dd | 1660 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1661 | |
1662 | if (sdret < 0) { | |
4754fcee FL |
1663 | brcmf_dbg(ERROR, "read %d bytes from channel %d failed: %d\n", |
1664 | rd->len, rd->channel, sdret); | |
5b435de0 | 1665 | brcmu_pkt_buf_free_skb(pkt); |
719f2733 | 1666 | bus->sdiodev->bus_if->dstats.rx_errors++; |
38b0b0dd | 1667 | sdio_claim_host(bus->sdiodev->func[1]); |
4754fcee FL |
1668 | brcmf_sdbrcm_rxfail(bus, true, |
1669 | RETRYCHAN(rd->channel)); | |
38b0b0dd | 1670 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1671 | continue; |
1672 | } | |
1673 | ||
4754fcee FL |
1674 | if (head_read) { |
1675 | skb_push(pkt, head_read); | |
1676 | memcpy(pkt->data, bus->rxhdr, head_read); | |
1677 | head_read = 0; | |
1678 | } else { | |
1679 | memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN); | |
1680 | rd_new.seq_num = rd->seq_num; | |
38b0b0dd | 1681 | sdio_claim_host(bus->sdiodev->func[1]); |
9d7d6f95 FL |
1682 | if (!brcmf_sdio_hdparser(bus, bus->rxhdr, &rd_new, |
1683 | BRCMF_SDIO_FT_NORMAL)) { | |
4754fcee FL |
1684 | rd->len = 0; |
1685 | brcmu_pkt_buf_free_skb(pkt); | |
1686 | } | |
1687 | bus->sdcnt.rx_readahead_cnt++; | |
1688 | if (rd->len != roundup(rd_new.len, 16)) { | |
1689 | brcmf_dbg(ERROR, "frame length mismatch:read %d, should be %d\n", | |
1690 | rd->len, | |
1691 | roundup(rd_new.len, 16) >> 4); | |
1692 | rd->len = 0; | |
1693 | brcmf_sdbrcm_rxfail(bus, true, true); | |
38b0b0dd | 1694 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1695 | brcmu_pkt_buf_free_skb(pkt); |
1696 | continue; | |
1697 | } | |
38b0b0dd | 1698 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1699 | rd->len_nxtfrm = rd_new.len_nxtfrm; |
1700 | rd->channel = rd_new.channel; | |
1701 | rd->dat_offset = rd_new.dat_offset; | |
1702 | ||
1703 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && | |
1704 | BRCMF_DATA_ON()) && | |
1705 | BRCMF_HDRS_ON(), | |
1706 | bus->rxhdr, SDPCM_HDRLEN, | |
1707 | "RxHdr:\n"); | |
1708 | ||
1709 | if (rd_new.channel == SDPCM_CONTROL_CHANNEL) { | |
1710 | brcmf_dbg(ERROR, "readahead on control packet %d?\n", | |
1711 | rd_new.seq_num); | |
1712 | /* Force retry w/normal header read */ | |
1713 | rd->len = 0; | |
38b0b0dd | 1714 | sdio_claim_host(bus->sdiodev->func[1]); |
4754fcee | 1715 | brcmf_sdbrcm_rxfail(bus, false, true); |
38b0b0dd | 1716 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1717 | brcmu_pkt_buf_free_skb(pkt); |
1718 | continue; | |
1719 | } | |
1720 | } | |
5b435de0 | 1721 | |
1e023829 | 1722 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), |
4754fcee | 1723 | pkt->data, rd->len, "Rx Data:\n"); |
5b435de0 | 1724 | |
5b435de0 | 1725 | /* Save superframe descriptor and allocate packet frame */ |
4754fcee | 1726 | if (rd->channel == SDPCM_GLOM_CHANNEL) { |
5b435de0 AS |
1727 | if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_FRAMETAG_LEN])) { |
1728 | brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n", | |
4754fcee | 1729 | rd->len); |
1e023829 | 1730 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
4754fcee | 1731 | pkt->data, rd->len, |
1e023829 | 1732 | "Glom Data:\n"); |
4754fcee | 1733 | __skb_trim(pkt, rd->len); |
5b435de0 AS |
1734 | skb_pull(pkt, SDPCM_HDRLEN); |
1735 | bus->glomd = pkt; | |
1736 | } else { | |
1737 | brcmf_dbg(ERROR, "%s: glom superframe w/o " | |
1738 | "descriptor!\n", __func__); | |
38b0b0dd | 1739 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 1740 | brcmf_sdbrcm_rxfail(bus, false, false); |
38b0b0dd | 1741 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1742 | } |
4754fcee FL |
1743 | /* prepare the descriptor for the next read */ |
1744 | rd->len = rd->len_nxtfrm << 4; | |
1745 | rd->len_nxtfrm = 0; | |
1746 | /* treat all packet as event if we don't know */ | |
1747 | rd->channel = SDPCM_EVENT_CHANNEL; | |
5b435de0 AS |
1748 | continue; |
1749 | } | |
1750 | ||
1751 | /* Fill in packet len and prio, deliver upward */ | |
4754fcee FL |
1752 | __skb_trim(pkt, rd->len); |
1753 | skb_pull(pkt, rd->dat_offset); | |
1754 | ||
1755 | /* prepare the descriptor for the next read */ | |
1756 | rd->len = rd->len_nxtfrm << 4; | |
1757 | rd->len_nxtfrm = 0; | |
1758 | /* treat all packet as event if we don't know */ | |
1759 | rd->channel = SDPCM_EVENT_CHANNEL; | |
5b435de0 AS |
1760 | |
1761 | if (pkt->len == 0) { | |
1762 | brcmu_pkt_buf_free_skb(pkt); | |
1763 | continue; | |
d5625ee6 FL |
1764 | } else if (brcmf_proto_hdrpull(bus->sdiodev->dev, &ifidx, |
1765 | pkt) != 0) { | |
5b435de0 AS |
1766 | brcmf_dbg(ERROR, "rx protocol error\n"); |
1767 | brcmu_pkt_buf_free_skb(pkt); | |
719f2733 | 1768 | bus->sdiodev->bus_if->dstats.rx_errors++; |
5b435de0 AS |
1769 | continue; |
1770 | } | |
1771 | ||
228bb43d | 1772 | brcmf_rx_packet(bus->sdiodev->dev, ifidx, pkt); |
5b435de0 | 1773 | } |
4754fcee | 1774 | |
5b435de0 | 1775 | rxcount = maxframes - rxleft; |
5b435de0 AS |
1776 | /* Message if we hit the limit */ |
1777 | if (!rxleft) | |
4754fcee | 1778 | brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes); |
5b435de0 | 1779 | else |
5b435de0 AS |
1780 | brcmf_dbg(DATA, "processed %d frames\n", rxcount); |
1781 | /* Back off rxseq if awaiting rtx, update rx_seq */ | |
1782 | if (bus->rxskip) | |
4754fcee FL |
1783 | rd->seq_num--; |
1784 | bus->rx_seq = rd->seq_num; | |
5b435de0 AS |
1785 | |
1786 | return rxcount; | |
1787 | } | |
1788 | ||
5b435de0 | 1789 | static void |
e92eedf4 | 1790 | brcmf_sdbrcm_wait_event_wakeup(struct brcmf_sdio *bus) |
5b435de0 AS |
1791 | { |
1792 | if (waitqueue_active(&bus->ctrl_wait)) | |
1793 | wake_up_interruptible(&bus->ctrl_wait); | |
1794 | return; | |
1795 | } | |
1796 | ||
1797 | /* Writes a HW/SW header into the packet and sends it. */ | |
1798 | /* Assumes: (a) header space already there, (b) caller holds lock */ | |
e92eedf4 | 1799 | static int brcmf_sdbrcm_txpkt(struct brcmf_sdio *bus, struct sk_buff *pkt, |
5b435de0 AS |
1800 | uint chan, bool free_pkt) |
1801 | { | |
1802 | int ret; | |
1803 | u8 *frame; | |
1804 | u16 len, pad = 0; | |
1805 | u32 swheader; | |
1806 | struct sk_buff *new; | |
1807 | int i; | |
1808 | ||
1809 | brcmf_dbg(TRACE, "Enter\n"); | |
1810 | ||
1811 | frame = (u8 *) (pkt->data); | |
1812 | ||
1813 | /* Add alignment padding, allocate new packet if needed */ | |
1814 | pad = ((unsigned long)frame % BRCMF_SDALIGN); | |
1815 | if (pad) { | |
1816 | if (skb_headroom(pkt) < pad) { | |
1817 | brcmf_dbg(INFO, "insufficient headroom %d for %d pad\n", | |
1818 | skb_headroom(pkt), pad); | |
9c1a043a | 1819 | bus->sdiodev->bus_if->tx_realloc++; |
5b435de0 AS |
1820 | new = brcmu_pkt_buf_get_skb(pkt->len + BRCMF_SDALIGN); |
1821 | if (!new) { | |
1822 | brcmf_dbg(ERROR, "couldn't allocate new %d-byte packet\n", | |
1823 | pkt->len + BRCMF_SDALIGN); | |
1824 | ret = -ENOMEM; | |
1825 | goto done; | |
1826 | } | |
1827 | ||
1828 | pkt_align(new, pkt->len, BRCMF_SDALIGN); | |
1829 | memcpy(new->data, pkt->data, pkt->len); | |
1830 | if (free_pkt) | |
1831 | brcmu_pkt_buf_free_skb(pkt); | |
1832 | /* free the pkt if canned one is not used */ | |
1833 | free_pkt = true; | |
1834 | pkt = new; | |
1835 | frame = (u8 *) (pkt->data); | |
1836 | /* precondition: (frame % BRCMF_SDALIGN) == 0) */ | |
1837 | pad = 0; | |
1838 | } else { | |
1839 | skb_push(pkt, pad); | |
1840 | frame = (u8 *) (pkt->data); | |
1841 | /* precondition: pad + SDPCM_HDRLEN <= pkt->len */ | |
1842 | memset(frame, 0, pad + SDPCM_HDRLEN); | |
1843 | } | |
1844 | } | |
1845 | /* precondition: pad < BRCMF_SDALIGN */ | |
1846 | ||
1847 | /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ | |
1848 | len = (u16) (pkt->len); | |
1849 | *(__le16 *) frame = cpu_to_le16(len); | |
1850 | *(((__le16 *) frame) + 1) = cpu_to_le16(~len); | |
1851 | ||
1852 | /* Software tag: channel, sequence number, data offset */ | |
1853 | swheader = | |
1854 | ((chan << SDPCM_CHANNEL_SHIFT) & SDPCM_CHANNEL_MASK) | bus->tx_seq | | |
1855 | (((pad + | |
1856 | SDPCM_HDRLEN) << SDPCM_DOFFSET_SHIFT) & SDPCM_DOFFSET_MASK); | |
1857 | ||
1858 | put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); | |
1859 | put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); | |
1860 | ||
8ae74654 | 1861 | #ifdef DEBUG |
5b435de0 | 1862 | tx_packets[pkt->priority]++; |
18aad4f8 | 1863 | #endif |
1e023829 JP |
1864 | |
1865 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && | |
1866 | ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) || | |
1867 | (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL)), | |
1868 | frame, len, "Tx Frame:\n"); | |
1869 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && | |
1870 | ((BRCMF_CTL_ON() && | |
1871 | chan == SDPCM_CONTROL_CHANNEL) || | |
1872 | (BRCMF_DATA_ON() && | |
1873 | chan != SDPCM_CONTROL_CHANNEL))) && | |
1874 | BRCMF_HDRS_ON(), | |
1875 | frame, min_t(u16, len, 16), "TxHdr:\n"); | |
5b435de0 AS |
1876 | |
1877 | /* Raise len to next SDIO block to eliminate tail command */ | |
1878 | if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { | |
1879 | u16 pad = bus->blocksize - (len % bus->blocksize); | |
1880 | if ((pad <= bus->roundup) && (pad < bus->blocksize)) | |
1881 | len += pad; | |
1882 | } else if (len % BRCMF_SDALIGN) { | |
1883 | len += BRCMF_SDALIGN - (len % BRCMF_SDALIGN); | |
1884 | } | |
1885 | ||
1886 | /* Some controllers have trouble with odd bytes -- round to even */ | |
1887 | if (len & (ALIGNMENT - 1)) | |
1888 | len = roundup(len, ALIGNMENT); | |
1889 | ||
38b0b0dd | 1890 | sdio_claim_host(bus->sdiodev->func[1]); |
5adfeb63 AS |
1891 | ret = brcmf_sdcard_send_pkt(bus->sdiodev, bus->sdiodev->sbwad, |
1892 | SDIO_FUNC_2, F2SYNC, pkt); | |
80969836 | 1893 | bus->sdcnt.f2txdata++; |
5b435de0 AS |
1894 | |
1895 | if (ret < 0) { | |
1896 | /* On failure, abort the command and terminate the frame */ | |
1897 | brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", | |
1898 | ret); | |
80969836 | 1899 | bus->sdcnt.tx_sderrs++; |
5b435de0 AS |
1900 | |
1901 | brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); | |
3bba829f FL |
1902 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
1903 | SFC_WF_TERM, NULL); | |
80969836 | 1904 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
1905 | |
1906 | for (i = 0; i < 3; i++) { | |
1907 | u8 hi, lo; | |
45db339c FL |
1908 | hi = brcmf_sdio_regrb(bus->sdiodev, |
1909 | SBSDIO_FUNC1_WFRAMEBCHI, NULL); | |
1910 | lo = brcmf_sdio_regrb(bus->sdiodev, | |
1911 | SBSDIO_FUNC1_WFRAMEBCLO, NULL); | |
80969836 | 1912 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
1913 | if ((hi == 0) && (lo == 0)) |
1914 | break; | |
1915 | } | |
1916 | ||
1917 | } | |
38b0b0dd | 1918 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1919 | if (ret == 0) |
1920 | bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; | |
1921 | ||
1922 | done: | |
1923 | /* restore pkt buffer pointer before calling tx complete routine */ | |
1924 | skb_pull(pkt, SDPCM_HDRLEN + pad); | |
c995788f | 1925 | brcmf_txcomplete(bus->sdiodev->dev, pkt, ret != 0); |
5b435de0 AS |
1926 | |
1927 | if (free_pkt) | |
1928 | brcmu_pkt_buf_free_skb(pkt); | |
1929 | ||
1930 | return ret; | |
1931 | } | |
1932 | ||
e92eedf4 | 1933 | static uint brcmf_sdbrcm_sendfromq(struct brcmf_sdio *bus, uint maxframes) |
5b435de0 AS |
1934 | { |
1935 | struct sk_buff *pkt; | |
1936 | u32 intstatus = 0; | |
5b435de0 AS |
1937 | int ret = 0, prec_out; |
1938 | uint cnt = 0; | |
1939 | uint datalen; | |
1940 | u8 tx_prec_map; | |
1941 | ||
5b435de0 AS |
1942 | brcmf_dbg(TRACE, "Enter\n"); |
1943 | ||
1944 | tx_prec_map = ~bus->flowcontrol; | |
1945 | ||
1946 | /* Send frames until the limit or some other event */ | |
1947 | for (cnt = 0; (cnt < maxframes) && data_ok(bus); cnt++) { | |
1948 | spin_lock_bh(&bus->txqlock); | |
1949 | pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, &prec_out); | |
1950 | if (pkt == NULL) { | |
1951 | spin_unlock_bh(&bus->txqlock); | |
1952 | break; | |
1953 | } | |
1954 | spin_unlock_bh(&bus->txqlock); | |
1955 | datalen = pkt->len - SDPCM_HDRLEN; | |
1956 | ||
1957 | ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); | |
1958 | if (ret) | |
719f2733 | 1959 | bus->sdiodev->bus_if->dstats.tx_errors++; |
5b435de0 | 1960 | else |
719f2733 | 1961 | bus->sdiodev->bus_if->dstats.tx_bytes += datalen; |
5b435de0 AS |
1962 | |
1963 | /* In poll mode, need to check for other events */ | |
1964 | if (!bus->intr && cnt) { | |
1965 | /* Check device status, signal pending interrupt */ | |
38b0b0dd | 1966 | sdio_claim_host(bus->sdiodev->func[1]); |
5c15c23a FL |
1967 | ret = r_sdreg32(bus, &intstatus, |
1968 | offsetof(struct sdpcmd_regs, | |
1969 | intstatus)); | |
38b0b0dd | 1970 | sdio_release_host(bus->sdiodev->func[1]); |
80969836 | 1971 | bus->sdcnt.f2txdata++; |
5c15c23a | 1972 | if (ret != 0) |
5b435de0 AS |
1973 | break; |
1974 | if (intstatus & bus->hostintmask) | |
1d382273 | 1975 | atomic_set(&bus->ipend, 1); |
5b435de0 AS |
1976 | } |
1977 | } | |
1978 | ||
1979 | /* Deflow-control stack if needed */ | |
712ac5b3 FL |
1980 | if (bus->sdiodev->bus_if->drvr_up && |
1981 | (bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) && | |
c8bf3484 | 1982 | bus->txoff && (pktq_len(&bus->txq) < TXLOW)) { |
90d03ff7 HM |
1983 | bus->txoff = false; |
1984 | brcmf_txflowblock(bus->sdiodev->dev, false); | |
c8bf3484 | 1985 | } |
5b435de0 AS |
1986 | |
1987 | return cnt; | |
1988 | } | |
1989 | ||
a9ffda88 FL |
1990 | static void brcmf_sdbrcm_bus_stop(struct device *dev) |
1991 | { | |
1992 | u32 local_hostintmask; | |
1993 | u8 saveclk; | |
a9ffda88 FL |
1994 | int err; |
1995 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
0a332e46 | 1996 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
a9ffda88 FL |
1997 | struct brcmf_sdio *bus = sdiodev->bus; |
1998 | ||
1999 | brcmf_dbg(TRACE, "Enter\n"); | |
2000 | ||
2001 | if (bus->watchdog_tsk) { | |
2002 | send_sig(SIGTERM, bus->watchdog_tsk, 1); | |
2003 | kthread_stop(bus->watchdog_tsk); | |
2004 | bus->watchdog_tsk = NULL; | |
2005 | } | |
2006 | ||
38b0b0dd | 2007 | sdio_claim_host(bus->sdiodev->func[1]); |
a9ffda88 | 2008 | |
a9ffda88 FL |
2009 | /* Enable clock for device interrupts */ |
2010 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); | |
2011 | ||
2012 | /* Disable and clear interrupts at the chip level also */ | |
58692750 | 2013 | w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask)); |
a9ffda88 FL |
2014 | local_hostintmask = bus->hostintmask; |
2015 | bus->hostintmask = 0; | |
2016 | ||
2017 | /* Change our idea of bus state */ | |
2018 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; | |
2019 | ||
2020 | /* Force clocks on backplane to be sure F2 interrupt propagates */ | |
45db339c FL |
2021 | saveclk = brcmf_sdio_regrb(bus->sdiodev, |
2022 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
a9ffda88 | 2023 | if (!err) { |
3bba829f FL |
2024 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
2025 | (saveclk | SBSDIO_FORCE_HT), &err); | |
a9ffda88 FL |
2026 | } |
2027 | if (err) | |
2028 | brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err); | |
2029 | ||
2030 | /* Turn off the bus (F2), free any pending packets */ | |
2031 | brcmf_dbg(INTR, "disable SDIO interrupts\n"); | |
3bba829f FL |
2032 | brcmf_sdio_regwb(bus->sdiodev, SDIO_CCCR_IOEx, SDIO_FUNC_ENABLE_1, |
2033 | NULL); | |
a9ffda88 FL |
2034 | |
2035 | /* Clear any pending interrupts now that F2 is disabled */ | |
2036 | w_sdreg32(bus, local_hostintmask, | |
58692750 | 2037 | offsetof(struct sdpcmd_regs, intstatus)); |
a9ffda88 FL |
2038 | |
2039 | /* Turn off the backplane clock (only) */ | |
2040 | brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); | |
38b0b0dd | 2041 | sdio_release_host(bus->sdiodev->func[1]); |
a9ffda88 FL |
2042 | |
2043 | /* Clear the data packet queues */ | |
2044 | brcmu_pktq_flush(&bus->txq, true, NULL, NULL); | |
2045 | ||
2046 | /* Clear any held glomming stuff */ | |
2047 | if (bus->glomd) | |
2048 | brcmu_pkt_buf_free_skb(bus->glomd); | |
2049 | brcmf_sdbrcm_free_glom(bus); | |
2050 | ||
2051 | /* Clear rx control and wake any waiters */ | |
dd43a01c | 2052 | spin_lock_bh(&bus->rxctl_lock); |
a9ffda88 | 2053 | bus->rxlen = 0; |
dd43a01c | 2054 | spin_unlock_bh(&bus->rxctl_lock); |
a9ffda88 FL |
2055 | brcmf_sdbrcm_dcmd_resp_wake(bus); |
2056 | ||
2057 | /* Reset some F2 state stuff */ | |
2058 | bus->rxskip = false; | |
2059 | bus->tx_seq = bus->rx_seq = 0; | |
a9ffda88 FL |
2060 | } |
2061 | ||
ba89bf19 FL |
2062 | #ifdef CONFIG_BRCMFMAC_SDIO_OOB |
2063 | static inline void brcmf_sdbrcm_clrintr(struct brcmf_sdio *bus) | |
2064 | { | |
2065 | unsigned long flags; | |
2066 | ||
2067 | spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags); | |
1d382273 | 2068 | if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) { |
ba89bf19 FL |
2069 | enable_irq(bus->sdiodev->irq); |
2070 | bus->sdiodev->irq_en = true; | |
2071 | } | |
2072 | spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags); | |
2073 | } | |
2074 | #else | |
2075 | static inline void brcmf_sdbrcm_clrintr(struct brcmf_sdio *bus) | |
2076 | { | |
2077 | } | |
2078 | #endif /* CONFIG_BRCMFMAC_SDIO_OOB */ | |
2079 | ||
f1e68c2e FL |
2080 | static inline void brcmf_sdbrcm_adddpctsk(struct brcmf_sdio *bus) |
2081 | { | |
2082 | struct list_head *new_hd; | |
2083 | unsigned long flags; | |
2084 | ||
2085 | if (in_interrupt()) | |
2086 | new_hd = kzalloc(sizeof(struct list_head), GFP_ATOMIC); | |
2087 | else | |
2088 | new_hd = kzalloc(sizeof(struct list_head), GFP_KERNEL); | |
2089 | if (new_hd == NULL) | |
2090 | return; | |
2091 | ||
2092 | spin_lock_irqsave(&bus->dpc_tl_lock, flags); | |
2093 | list_add_tail(new_hd, &bus->dpc_tsklst); | |
2094 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
2095 | } | |
2096 | ||
4531603a FL |
2097 | static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus) |
2098 | { | |
2099 | u8 idx; | |
2100 | u32 addr; | |
2101 | unsigned long val; | |
2102 | int n, ret; | |
2103 | ||
2104 | idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); | |
2105 | addr = bus->ci->c_inf[idx].base + | |
2106 | offsetof(struct sdpcmd_regs, intstatus); | |
2107 | ||
2108 | ret = brcmf_sdio_regrw_helper(bus->sdiodev, addr, &val, false); | |
2109 | bus->sdcnt.f1regdata++; | |
2110 | if (ret != 0) | |
2111 | val = 0; | |
2112 | ||
2113 | val &= bus->hostintmask; | |
2114 | atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE)); | |
2115 | ||
2116 | /* Clear interrupts */ | |
2117 | if (val) { | |
2118 | ret = brcmf_sdio_regrw_helper(bus->sdiodev, addr, &val, true); | |
2119 | bus->sdcnt.f1regdata++; | |
2120 | } | |
2121 | ||
2122 | if (ret) { | |
2123 | atomic_set(&bus->intstatus, 0); | |
2124 | } else if (val) { | |
2125 | for_each_set_bit(n, &val, 32) | |
2126 | set_bit(n, (unsigned long *)&bus->intstatus.counter); | |
2127 | } | |
2128 | ||
2129 | return ret; | |
2130 | } | |
2131 | ||
f1e68c2e | 2132 | static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus) |
5b435de0 | 2133 | { |
4531603a FL |
2134 | u32 newstatus = 0; |
2135 | unsigned long intstatus; | |
5b435de0 AS |
2136 | uint rxlimit = bus->rxbound; /* Rx frames to read before resched */ |
2137 | uint txlimit = bus->txbound; /* Tx frames to send before resched */ | |
2138 | uint framecnt = 0; /* Temporary counter of tx/rx frames */ | |
4531603a | 2139 | int err = 0, n; |
5b435de0 AS |
2140 | |
2141 | brcmf_dbg(TRACE, "Enter\n"); | |
2142 | ||
38b0b0dd | 2143 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2144 | |
2145 | /* If waiting for HTAVAIL, check status */ | |
2146 | if (bus->clkstate == CLK_PENDING) { | |
5b435de0 AS |
2147 | u8 clkctl, devctl = 0; |
2148 | ||
8ae74654 | 2149 | #ifdef DEBUG |
5b435de0 | 2150 | /* Check for inconsistent device control */ |
45db339c FL |
2151 | devctl = brcmf_sdio_regrb(bus->sdiodev, |
2152 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 AS |
2153 | if (err) { |
2154 | brcmf_dbg(ERROR, "error reading DEVCTL: %d\n", err); | |
712ac5b3 | 2155 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 | 2156 | } |
8ae74654 | 2157 | #endif /* DEBUG */ |
5b435de0 AS |
2158 | |
2159 | /* Read CSR, if clock on switch to AVAIL, else ignore */ | |
45db339c FL |
2160 | clkctl = brcmf_sdio_regrb(bus->sdiodev, |
2161 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 AS |
2162 | if (err) { |
2163 | brcmf_dbg(ERROR, "error reading CSR: %d\n", | |
2164 | err); | |
712ac5b3 | 2165 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
2166 | } |
2167 | ||
2168 | brcmf_dbg(INFO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n", | |
2169 | devctl, clkctl); | |
2170 | ||
2171 | if (SBSDIO_HTAV(clkctl)) { | |
45db339c FL |
2172 | devctl = brcmf_sdio_regrb(bus->sdiodev, |
2173 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 AS |
2174 | if (err) { |
2175 | brcmf_dbg(ERROR, "error reading DEVCTL: %d\n", | |
2176 | err); | |
712ac5b3 | 2177 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
2178 | } |
2179 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; | |
3bba829f FL |
2180 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
2181 | devctl, &err); | |
5b435de0 AS |
2182 | if (err) { |
2183 | brcmf_dbg(ERROR, "error writing DEVCTL: %d\n", | |
2184 | err); | |
712ac5b3 | 2185 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
2186 | } |
2187 | bus->clkstate = CLK_AVAIL; | |
5b435de0 AS |
2188 | } |
2189 | } | |
2190 | ||
5b435de0 AS |
2191 | /* Make sure backplane clock is on */ |
2192 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true); | |
5b435de0 AS |
2193 | |
2194 | /* Pending interrupt indicates new device status */ | |
1d382273 FL |
2195 | if (atomic_read(&bus->ipend) > 0) { |
2196 | atomic_set(&bus->ipend, 0); | |
4531603a | 2197 | err = brcmf_sdio_intr_rstatus(bus); |
5b435de0 AS |
2198 | } |
2199 | ||
4531603a FL |
2200 | /* Start with leftover status bits */ |
2201 | intstatus = atomic_xchg(&bus->intstatus, 0); | |
5b435de0 AS |
2202 | |
2203 | /* Handle flow-control change: read new state in case our ack | |
2204 | * crossed another change interrupt. If change still set, assume | |
2205 | * FC ON for safety, let next loop through do the debounce. | |
2206 | */ | |
2207 | if (intstatus & I_HMB_FC_CHANGE) { | |
2208 | intstatus &= ~I_HMB_FC_CHANGE; | |
5c15c23a FL |
2209 | err = w_sdreg32(bus, I_HMB_FC_CHANGE, |
2210 | offsetof(struct sdpcmd_regs, intstatus)); | |
5b435de0 | 2211 | |
5c15c23a FL |
2212 | err = r_sdreg32(bus, &newstatus, |
2213 | offsetof(struct sdpcmd_regs, intstatus)); | |
80969836 | 2214 | bus->sdcnt.f1regdata += 2; |
4531603a FL |
2215 | atomic_set(&bus->fcstate, |
2216 | !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE))); | |
5b435de0 AS |
2217 | intstatus |= (newstatus & bus->hostintmask); |
2218 | } | |
2219 | ||
2220 | /* Handle host mailbox indication */ | |
2221 | if (intstatus & I_HMB_HOST_INT) { | |
2222 | intstatus &= ~I_HMB_HOST_INT; | |
2223 | intstatus |= brcmf_sdbrcm_hostmail(bus); | |
2224 | } | |
2225 | ||
38b0b0dd | 2226 | sdio_release_host(bus->sdiodev->func[1]); |
7cdf57d3 | 2227 | |
5b435de0 AS |
2228 | /* Generally don't ask for these, can get CRC errors... */ |
2229 | if (intstatus & I_WR_OOSYNC) { | |
2230 | brcmf_dbg(ERROR, "Dongle reports WR_OOSYNC\n"); | |
2231 | intstatus &= ~I_WR_OOSYNC; | |
2232 | } | |
2233 | ||
2234 | if (intstatus & I_RD_OOSYNC) { | |
2235 | brcmf_dbg(ERROR, "Dongle reports RD_OOSYNC\n"); | |
2236 | intstatus &= ~I_RD_OOSYNC; | |
2237 | } | |
2238 | ||
2239 | if (intstatus & I_SBINT) { | |
2240 | brcmf_dbg(ERROR, "Dongle reports SBINT\n"); | |
2241 | intstatus &= ~I_SBINT; | |
2242 | } | |
2243 | ||
2244 | /* Would be active due to wake-wlan in gSPI */ | |
2245 | if (intstatus & I_CHIPACTIVE) { | |
2246 | brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n"); | |
2247 | intstatus &= ~I_CHIPACTIVE; | |
2248 | } | |
2249 | ||
2250 | /* Ignore frame indications if rxskip is set */ | |
2251 | if (bus->rxskip) | |
2252 | intstatus &= ~I_HMB_FRAME_IND; | |
2253 | ||
2254 | /* On frame indication, read available frames */ | |
03d5c360 | 2255 | if (PKT_AVAILABLE() && bus->clkstate == CLK_AVAIL) { |
4754fcee FL |
2256 | framecnt = brcmf_sdio_readframes(bus, rxlimit); |
2257 | if (!bus->rxpending) | |
5b435de0 AS |
2258 | intstatus &= ~I_HMB_FRAME_IND; |
2259 | rxlimit -= min(framecnt, rxlimit); | |
2260 | } | |
2261 | ||
2262 | /* Keep still-pending events for next scheduling */ | |
4531603a FL |
2263 | if (intstatus) { |
2264 | for_each_set_bit(n, &intstatus, 32) | |
2265 | set_bit(n, (unsigned long *)&bus->intstatus.counter); | |
2266 | } | |
5b435de0 | 2267 | |
ba89bf19 FL |
2268 | brcmf_sdbrcm_clrintr(bus); |
2269 | ||
5b435de0 AS |
2270 | if (data_ok(bus) && bus->ctrl_frame_stat && |
2271 | (bus->clkstate == CLK_AVAIL)) { | |
03d5c360 | 2272 | int i; |
5b435de0 | 2273 | |
38b0b0dd | 2274 | sdio_claim_host(bus->sdiodev->func[1]); |
03d5c360 | 2275 | err = brcmf_sdcard_send_buf(bus->sdiodev, bus->sdiodev->sbwad, |
2c208890 | 2276 | SDIO_FUNC_2, F2SYNC, bus->ctrl_frame_buf, |
5adfeb63 | 2277 | (u32) bus->ctrl_frame_len); |
5b435de0 | 2278 | |
03d5c360 | 2279 | if (err < 0) { |
5b435de0 AS |
2280 | /* On failure, abort the command and |
2281 | terminate the frame */ | |
2282 | brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", | |
03d5c360 | 2283 | err); |
80969836 | 2284 | bus->sdcnt.tx_sderrs++; |
5b435de0 AS |
2285 | |
2286 | brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); | |
2287 | ||
3bba829f | 2288 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
5c15c23a | 2289 | SFC_WF_TERM, &err); |
80969836 | 2290 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
2291 | |
2292 | for (i = 0; i < 3; i++) { | |
2293 | u8 hi, lo; | |
45db339c FL |
2294 | hi = brcmf_sdio_regrb(bus->sdiodev, |
2295 | SBSDIO_FUNC1_WFRAMEBCHI, | |
5c15c23a | 2296 | &err); |
45db339c FL |
2297 | lo = brcmf_sdio_regrb(bus->sdiodev, |
2298 | SBSDIO_FUNC1_WFRAMEBCLO, | |
5c15c23a | 2299 | &err); |
80969836 | 2300 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
2301 | if ((hi == 0) && (lo == 0)) |
2302 | break; | |
2303 | } | |
2304 | ||
03d5c360 | 2305 | } else { |
5b435de0 | 2306 | bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; |
03d5c360 | 2307 | } |
38b0b0dd | 2308 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2309 | bus->ctrl_frame_stat = false; |
2310 | brcmf_sdbrcm_wait_event_wakeup(bus); | |
2311 | } | |
2312 | /* Send queued frames (limit 1 if rx may still be pending) */ | |
4531603a | 2313 | else if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) && |
5b435de0 AS |
2314 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit |
2315 | && data_ok(bus)) { | |
4754fcee FL |
2316 | framecnt = bus->rxpending ? min(txlimit, bus->txminmax) : |
2317 | txlimit; | |
5b435de0 AS |
2318 | framecnt = brcmf_sdbrcm_sendfromq(bus, framecnt); |
2319 | txlimit -= framecnt; | |
2320 | } | |
2321 | ||
5c15c23a FL |
2322 | if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) || (err != 0)) { |
2323 | brcmf_dbg(ERROR, "failed backplane access over SDIO, halting operation\n"); | |
712ac5b3 | 2324 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
4531603a FL |
2325 | atomic_set(&bus->intstatus, 0); |
2326 | } else if (atomic_read(&bus->intstatus) || | |
2327 | atomic_read(&bus->ipend) > 0 || | |
2328 | (!atomic_read(&bus->fcstate) && | |
2329 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && | |
2330 | data_ok(bus)) || PKT_AVAILABLE()) { | |
f1e68c2e | 2331 | brcmf_sdbrcm_adddpctsk(bus); |
5b435de0 AS |
2332 | } |
2333 | ||
5b435de0 AS |
2334 | /* If we're done for now, turn off clock request. */ |
2335 | if ((bus->clkstate != CLK_PENDING) | |
2336 | && bus->idletime == BRCMF_IDLE_IMMEDIATE) { | |
2337 | bus->activity = false; | |
38b0b0dd | 2338 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 2339 | brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); |
38b0b0dd | 2340 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 2341 | } |
5b435de0 AS |
2342 | } |
2343 | ||
b9692d17 | 2344 | static int brcmf_sdbrcm_bus_txdata(struct device *dev, struct sk_buff *pkt) |
5b435de0 AS |
2345 | { |
2346 | int ret = -EBADE; | |
2347 | uint datalen, prec; | |
bf347bb9 | 2348 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 2349 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
bf347bb9 | 2350 | struct brcmf_sdio *bus = sdiodev->bus; |
f1e68c2e | 2351 | unsigned long flags; |
5b435de0 AS |
2352 | |
2353 | brcmf_dbg(TRACE, "Enter\n"); | |
2354 | ||
2355 | datalen = pkt->len; | |
2356 | ||
2357 | /* Add space for the header */ | |
2358 | skb_push(pkt, SDPCM_HDRLEN); | |
2359 | /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */ | |
2360 | ||
2361 | prec = prio2prec((pkt->priority & PRIOMASK)); | |
2362 | ||
2363 | /* Check for existing queue, current flow-control, | |
2364 | pending event, or pending clock */ | |
2365 | brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq)); | |
80969836 | 2366 | bus->sdcnt.fcqueued++; |
5b435de0 AS |
2367 | |
2368 | /* Priority based enq */ | |
2369 | spin_lock_bh(&bus->txqlock); | |
23677ce3 | 2370 | if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) { |
5b435de0 | 2371 | skb_pull(pkt, SDPCM_HDRLEN); |
c995788f | 2372 | brcmf_txcomplete(bus->sdiodev->dev, pkt, false); |
5b435de0 AS |
2373 | brcmu_pkt_buf_free_skb(pkt); |
2374 | brcmf_dbg(ERROR, "out of bus->txq !!!\n"); | |
2375 | ret = -ENOSR; | |
2376 | } else { | |
2377 | ret = 0; | |
2378 | } | |
2379 | spin_unlock_bh(&bus->txqlock); | |
2380 | ||
c8bf3484 | 2381 | if (pktq_len(&bus->txq) >= TXHI) { |
90d03ff7 HM |
2382 | bus->txoff = true; |
2383 | brcmf_txflowblock(bus->sdiodev->dev, true); | |
c8bf3484 | 2384 | } |
5b435de0 | 2385 | |
8ae74654 | 2386 | #ifdef DEBUG |
5b435de0 AS |
2387 | if (pktq_plen(&bus->txq, prec) > qcount[prec]) |
2388 | qcount[prec] = pktq_plen(&bus->txq, prec); | |
2389 | #endif | |
f1e68c2e FL |
2390 | |
2391 | spin_lock_irqsave(&bus->dpc_tl_lock, flags); | |
2392 | if (list_empty(&bus->dpc_tsklst)) { | |
2393 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
2394 | ||
2395 | brcmf_sdbrcm_adddpctsk(bus); | |
2396 | queue_work(bus->brcmf_wq, &bus->datawork); | |
2397 | } else { | |
2398 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
5b435de0 AS |
2399 | } |
2400 | ||
2401 | return ret; | |
2402 | } | |
2403 | ||
2404 | static int | |
e92eedf4 | 2405 | brcmf_sdbrcm_membytes(struct brcmf_sdio *bus, bool write, u32 address, u8 *data, |
5b435de0 AS |
2406 | uint size) |
2407 | { | |
2408 | int bcmerror = 0; | |
2409 | u32 sdaddr; | |
2410 | uint dsize; | |
2411 | ||
2412 | /* Determine initial transfer parameters */ | |
2413 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
2414 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
2415 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
2416 | else | |
2417 | dsize = size; | |
2418 | ||
7057fd00 FL |
2419 | sdio_claim_host(bus->sdiodev->func[1]); |
2420 | ||
5b435de0 AS |
2421 | /* Set the backplane window to include the start address */ |
2422 | bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, address); | |
2423 | if (bcmerror) { | |
2424 | brcmf_dbg(ERROR, "window change failed\n"); | |
2425 | goto xfer_done; | |
2426 | } | |
2427 | ||
2428 | /* Do the transfer(s) */ | |
2429 | while (size) { | |
2430 | brcmf_dbg(INFO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
2431 | write ? "write" : "read", dsize, | |
2432 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
2433 | bcmerror = brcmf_sdcard_rwdata(bus->sdiodev, write, | |
2434 | sdaddr, data, dsize); | |
2435 | if (bcmerror) { | |
2436 | brcmf_dbg(ERROR, "membytes transfer failed\n"); | |
2437 | break; | |
2438 | } | |
2439 | ||
2440 | /* Adjust for next transfer (if any) */ | |
2441 | size -= dsize; | |
2442 | if (size) { | |
2443 | data += dsize; | |
2444 | address += dsize; | |
2445 | bcmerror = brcmf_sdcard_set_sbaddr_window(bus->sdiodev, | |
2446 | address); | |
2447 | if (bcmerror) { | |
2448 | brcmf_dbg(ERROR, "window change failed\n"); | |
2449 | break; | |
2450 | } | |
2451 | sdaddr = 0; | |
2452 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | xfer_done: | |
2457 | /* Return the window to backplane enumeration space for core access */ | |
2458 | if (brcmf_sdcard_set_sbaddr_window(bus->sdiodev, bus->sdiodev->sbwad)) | |
2459 | brcmf_dbg(ERROR, "FAILED to set window back to 0x%x\n", | |
2460 | bus->sdiodev->sbwad); | |
2461 | ||
7057fd00 FL |
2462 | sdio_release_host(bus->sdiodev->func[1]); |
2463 | ||
5b435de0 AS |
2464 | return bcmerror; |
2465 | } | |
2466 | ||
8ae74654 | 2467 | #ifdef DEBUG |
5b435de0 AS |
2468 | #define CONSOLE_LINE_MAX 192 |
2469 | ||
e92eedf4 | 2470 | static int brcmf_sdbrcm_readconsole(struct brcmf_sdio *bus) |
5b435de0 AS |
2471 | { |
2472 | struct brcmf_console *c = &bus->console; | |
2473 | u8 line[CONSOLE_LINE_MAX], ch; | |
2474 | u32 n, idx, addr; | |
2475 | int rv; | |
2476 | ||
2477 | /* Don't do anything until FWREADY updates console address */ | |
2478 | if (bus->console_addr == 0) | |
2479 | return 0; | |
2480 | ||
2481 | /* Read console log struct */ | |
2482 | addr = bus->console_addr + offsetof(struct rte_console, log_le); | |
2483 | rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *)&c->log_le, | |
2484 | sizeof(c->log_le)); | |
2485 | if (rv < 0) | |
2486 | return rv; | |
2487 | ||
2488 | /* Allocate console buffer (one time only) */ | |
2489 | if (c->buf == NULL) { | |
2490 | c->bufsize = le32_to_cpu(c->log_le.buf_size); | |
2491 | c->buf = kmalloc(c->bufsize, GFP_ATOMIC); | |
2492 | if (c->buf == NULL) | |
2493 | return -ENOMEM; | |
2494 | } | |
2495 | ||
2496 | idx = le32_to_cpu(c->log_le.idx); | |
2497 | ||
2498 | /* Protect against corrupt value */ | |
2499 | if (idx > c->bufsize) | |
2500 | return -EBADE; | |
2501 | ||
2502 | /* Skip reading the console buffer if the index pointer | |
2503 | has not moved */ | |
2504 | if (idx == c->last) | |
2505 | return 0; | |
2506 | ||
2507 | /* Read the console buffer */ | |
2508 | addr = le32_to_cpu(c->log_le.buf); | |
2509 | rv = brcmf_sdbrcm_membytes(bus, false, addr, c->buf, c->bufsize); | |
2510 | if (rv < 0) | |
2511 | return rv; | |
2512 | ||
2513 | while (c->last != idx) { | |
2514 | for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { | |
2515 | if (c->last == idx) { | |
2516 | /* This would output a partial line. | |
2517 | * Instead, back up | |
2518 | * the buffer pointer and output this | |
2519 | * line next time around. | |
2520 | */ | |
2521 | if (c->last >= n) | |
2522 | c->last -= n; | |
2523 | else | |
2524 | c->last = c->bufsize - n; | |
2525 | goto break2; | |
2526 | } | |
2527 | ch = c->buf[c->last]; | |
2528 | c->last = (c->last + 1) % c->bufsize; | |
2529 | if (ch == '\n') | |
2530 | break; | |
2531 | line[n] = ch; | |
2532 | } | |
2533 | ||
2534 | if (n > 0) { | |
2535 | if (line[n - 1] == '\r') | |
2536 | n--; | |
2537 | line[n] = 0; | |
18aad4f8 | 2538 | pr_debug("CONSOLE: %s\n", line); |
5b435de0 AS |
2539 | } |
2540 | } | |
2541 | break2: | |
2542 | ||
2543 | return 0; | |
2544 | } | |
8ae74654 | 2545 | #endif /* DEBUG */ |
5b435de0 | 2546 | |
e92eedf4 | 2547 | static int brcmf_tx_frame(struct brcmf_sdio *bus, u8 *frame, u16 len) |
5b435de0 AS |
2548 | { |
2549 | int i; | |
2550 | int ret; | |
2551 | ||
2552 | bus->ctrl_frame_stat = false; | |
5adfeb63 AS |
2553 | ret = brcmf_sdcard_send_buf(bus->sdiodev, bus->sdiodev->sbwad, |
2554 | SDIO_FUNC_2, F2SYNC, frame, len); | |
5b435de0 AS |
2555 | |
2556 | if (ret < 0) { | |
2557 | /* On failure, abort the command and terminate the frame */ | |
2558 | brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", | |
2559 | ret); | |
80969836 | 2560 | bus->sdcnt.tx_sderrs++; |
5b435de0 AS |
2561 | |
2562 | brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); | |
2563 | ||
3bba829f FL |
2564 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
2565 | SFC_WF_TERM, NULL); | |
80969836 | 2566 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
2567 | |
2568 | for (i = 0; i < 3; i++) { | |
2569 | u8 hi, lo; | |
45db339c FL |
2570 | hi = brcmf_sdio_regrb(bus->sdiodev, |
2571 | SBSDIO_FUNC1_WFRAMEBCHI, NULL); | |
2572 | lo = brcmf_sdio_regrb(bus->sdiodev, | |
2573 | SBSDIO_FUNC1_WFRAMEBCLO, NULL); | |
80969836 | 2574 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
2575 | if (hi == 0 && lo == 0) |
2576 | break; | |
2577 | } | |
2578 | return ret; | |
2579 | } | |
2580 | ||
2581 | bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; | |
2582 | ||
2583 | return ret; | |
2584 | } | |
2585 | ||
fcf094f4 | 2586 | static int |
47a1ce78 | 2587 | brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen) |
5b435de0 AS |
2588 | { |
2589 | u8 *frame; | |
2590 | u16 len; | |
2591 | u32 swheader; | |
2592 | uint retries = 0; | |
2593 | u8 doff = 0; | |
2594 | int ret = -1; | |
47a1ce78 | 2595 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 2596 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
47a1ce78 | 2597 | struct brcmf_sdio *bus = sdiodev->bus; |
f1e68c2e | 2598 | unsigned long flags; |
5b435de0 AS |
2599 | |
2600 | brcmf_dbg(TRACE, "Enter\n"); | |
2601 | ||
2602 | /* Back the pointer to make a room for bus header */ | |
2603 | frame = msg - SDPCM_HDRLEN; | |
2604 | len = (msglen += SDPCM_HDRLEN); | |
2605 | ||
2606 | /* Add alignment padding (optional for ctl frames) */ | |
2607 | doff = ((unsigned long)frame % BRCMF_SDALIGN); | |
2608 | if (doff) { | |
2609 | frame -= doff; | |
2610 | len += doff; | |
2611 | msglen += doff; | |
2612 | memset(frame, 0, doff + SDPCM_HDRLEN); | |
2613 | } | |
2614 | /* precondition: doff < BRCMF_SDALIGN */ | |
2615 | doff += SDPCM_HDRLEN; | |
2616 | ||
2617 | /* Round send length to next SDIO block */ | |
2618 | if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { | |
2619 | u16 pad = bus->blocksize - (len % bus->blocksize); | |
2620 | if ((pad <= bus->roundup) && (pad < bus->blocksize)) | |
2621 | len += pad; | |
2622 | } else if (len % BRCMF_SDALIGN) { | |
2623 | len += BRCMF_SDALIGN - (len % BRCMF_SDALIGN); | |
2624 | } | |
2625 | ||
2626 | /* Satisfy length-alignment requirements */ | |
2627 | if (len & (ALIGNMENT - 1)) | |
2628 | len = roundup(len, ALIGNMENT); | |
2629 | ||
2630 | /* precondition: IS_ALIGNED((unsigned long)frame, 2) */ | |
2631 | ||
5b435de0 | 2632 | /* Make sure backplane clock is on */ |
38b0b0dd | 2633 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 2634 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
38b0b0dd | 2635 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2636 | |
2637 | /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ | |
2638 | *(__le16 *) frame = cpu_to_le16((u16) msglen); | |
2639 | *(((__le16 *) frame) + 1) = cpu_to_le16(~msglen); | |
2640 | ||
2641 | /* Software tag: channel, sequence number, data offset */ | |
2642 | swheader = | |
2643 | ((SDPCM_CONTROL_CHANNEL << SDPCM_CHANNEL_SHIFT) & | |
2644 | SDPCM_CHANNEL_MASK) | |
2645 | | bus->tx_seq | ((doff << SDPCM_DOFFSET_SHIFT) & | |
2646 | SDPCM_DOFFSET_MASK); | |
2647 | put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); | |
2648 | put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); | |
2649 | ||
2650 | if (!data_ok(bus)) { | |
2651 | brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n", | |
2652 | bus->tx_max, bus->tx_seq); | |
2653 | bus->ctrl_frame_stat = true; | |
2654 | /* Send from dpc */ | |
2655 | bus->ctrl_frame_buf = frame; | |
2656 | bus->ctrl_frame_len = len; | |
2657 | ||
fd67dc83 FL |
2658 | wait_event_interruptible_timeout(bus->ctrl_wait, |
2659 | !bus->ctrl_frame_stat, | |
2660 | msecs_to_jiffies(2000)); | |
5b435de0 | 2661 | |
23677ce3 | 2662 | if (!bus->ctrl_frame_stat) { |
5b435de0 AS |
2663 | brcmf_dbg(INFO, "ctrl_frame_stat == false\n"); |
2664 | ret = 0; | |
2665 | } else { | |
2666 | brcmf_dbg(INFO, "ctrl_frame_stat == true\n"); | |
2667 | ret = -1; | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | if (ret == -1) { | |
1e023829 JP |
2672 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), |
2673 | frame, len, "Tx Frame:\n"); | |
2674 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) && | |
2675 | BRCMF_HDRS_ON(), | |
2676 | frame, min_t(u16, len, 16), "TxHdr:\n"); | |
5b435de0 AS |
2677 | |
2678 | do { | |
38b0b0dd | 2679 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 2680 | ret = brcmf_tx_frame(bus, frame, len); |
38b0b0dd | 2681 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2682 | } while (ret < 0 && retries++ < TXRETRIES); |
2683 | } | |
2684 | ||
f1e68c2e FL |
2685 | spin_lock_irqsave(&bus->dpc_tl_lock, flags); |
2686 | if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) && | |
2687 | list_empty(&bus->dpc_tsklst)) { | |
2688 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
2689 | ||
5b435de0 | 2690 | bus->activity = false; |
38b0b0dd | 2691 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 2692 | brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); |
38b0b0dd | 2693 | sdio_release_host(bus->sdiodev->func[1]); |
f1e68c2e FL |
2694 | } else { |
2695 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
5b435de0 AS |
2696 | } |
2697 | ||
5b435de0 | 2698 | if (ret) |
80969836 | 2699 | bus->sdcnt.tx_ctlerrs++; |
5b435de0 | 2700 | else |
80969836 | 2701 | bus->sdcnt.tx_ctlpkts++; |
5b435de0 AS |
2702 | |
2703 | return ret ? -EIO : 0; | |
2704 | } | |
2705 | ||
80969836 | 2706 | #ifdef DEBUG |
4fc0d016 AS |
2707 | static inline bool brcmf_sdio_valid_shared_address(u32 addr) |
2708 | { | |
2709 | return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)); | |
2710 | } | |
2711 | ||
2712 | static int brcmf_sdio_readshared(struct brcmf_sdio *bus, | |
2713 | struct sdpcm_shared *sh) | |
2714 | { | |
2715 | u32 addr; | |
2716 | int rv; | |
2717 | u32 shaddr = 0; | |
2718 | struct sdpcm_shared_le sh_le; | |
2719 | __le32 addr_le; | |
2720 | ||
2721 | shaddr = bus->ramsize - 4; | |
2722 | ||
2723 | /* | |
2724 | * Read last word in socram to determine | |
2725 | * address of sdpcm_shared structure | |
2726 | */ | |
38b0b0dd | 2727 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2728 | rv = brcmf_sdbrcm_membytes(bus, false, shaddr, |
2729 | (u8 *)&addr_le, 4); | |
38b0b0dd | 2730 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2731 | if (rv < 0) |
2732 | return rv; | |
2733 | ||
2734 | addr = le32_to_cpu(addr_le); | |
2735 | ||
2736 | brcmf_dbg(INFO, "sdpcm_shared address 0x%08X\n", addr); | |
2737 | ||
2738 | /* | |
2739 | * Check if addr is valid. | |
2740 | * NVRAM length at the end of memory should have been overwritten. | |
2741 | */ | |
2742 | if (!brcmf_sdio_valid_shared_address(addr)) { | |
2743 | brcmf_dbg(ERROR, "invalid sdpcm_shared address 0x%08X\n", | |
2744 | addr); | |
2745 | return -EINVAL; | |
2746 | } | |
2747 | ||
2748 | /* Read hndrte_shared structure */ | |
38b0b0dd | 2749 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2750 | rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *)&sh_le, |
2751 | sizeof(struct sdpcm_shared_le)); | |
38b0b0dd | 2752 | sdio_release_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2753 | if (rv < 0) |
2754 | return rv; | |
2755 | ||
2756 | /* Endianness */ | |
2757 | sh->flags = le32_to_cpu(sh_le.flags); | |
2758 | sh->trap_addr = le32_to_cpu(sh_le.trap_addr); | |
2759 | sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr); | |
2760 | sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr); | |
2761 | sh->assert_line = le32_to_cpu(sh_le.assert_line); | |
2762 | sh->console_addr = le32_to_cpu(sh_le.console_addr); | |
2763 | sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr); | |
2764 | ||
2765 | if ((sh->flags & SDPCM_SHARED_VERSION_MASK) != SDPCM_SHARED_VERSION) { | |
2766 | brcmf_dbg(ERROR, | |
2767 | "sdpcm_shared version mismatch: dhd %d dongle %d\n", | |
2768 | SDPCM_SHARED_VERSION, | |
2769 | sh->flags & SDPCM_SHARED_VERSION_MASK); | |
2770 | return -EPROTO; | |
2771 | } | |
2772 | ||
2773 | return 0; | |
2774 | } | |
2775 | ||
2776 | static int brcmf_sdio_dump_console(struct brcmf_sdio *bus, | |
2777 | struct sdpcm_shared *sh, char __user *data, | |
2778 | size_t count) | |
2779 | { | |
2780 | u32 addr, console_ptr, console_size, console_index; | |
2781 | char *conbuf = NULL; | |
2782 | __le32 sh_val; | |
2783 | int rv; | |
2784 | loff_t pos = 0; | |
2785 | int nbytes = 0; | |
2786 | ||
2787 | /* obtain console information from device memory */ | |
2788 | addr = sh->console_addr + offsetof(struct rte_console, log_le); | |
2789 | rv = brcmf_sdbrcm_membytes(bus, false, addr, | |
2790 | (u8 *)&sh_val, sizeof(u32)); | |
2791 | if (rv < 0) | |
2792 | return rv; | |
2793 | console_ptr = le32_to_cpu(sh_val); | |
2794 | ||
2795 | addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size); | |
2796 | rv = brcmf_sdbrcm_membytes(bus, false, addr, | |
2797 | (u8 *)&sh_val, sizeof(u32)); | |
2798 | if (rv < 0) | |
2799 | return rv; | |
2800 | console_size = le32_to_cpu(sh_val); | |
2801 | ||
2802 | addr = sh->console_addr + offsetof(struct rte_console, log_le.idx); | |
2803 | rv = brcmf_sdbrcm_membytes(bus, false, addr, | |
2804 | (u8 *)&sh_val, sizeof(u32)); | |
2805 | if (rv < 0) | |
2806 | return rv; | |
2807 | console_index = le32_to_cpu(sh_val); | |
2808 | ||
2809 | /* allocate buffer for console data */ | |
2810 | if (console_size <= CONSOLE_BUFFER_MAX) | |
2811 | conbuf = vzalloc(console_size+1); | |
2812 | ||
2813 | if (!conbuf) | |
2814 | return -ENOMEM; | |
2815 | ||
2816 | /* obtain the console data from device */ | |
2817 | conbuf[console_size] = '\0'; | |
2818 | rv = brcmf_sdbrcm_membytes(bus, false, console_ptr, (u8 *)conbuf, | |
2819 | console_size); | |
2820 | if (rv < 0) | |
2821 | goto done; | |
2822 | ||
2823 | rv = simple_read_from_buffer(data, count, &pos, | |
2824 | conbuf + console_index, | |
2825 | console_size - console_index); | |
2826 | if (rv < 0) | |
2827 | goto done; | |
2828 | ||
2829 | nbytes = rv; | |
2830 | if (console_index > 0) { | |
2831 | pos = 0; | |
2832 | rv = simple_read_from_buffer(data+nbytes, count, &pos, | |
2833 | conbuf, console_index - 1); | |
2834 | if (rv < 0) | |
2835 | goto done; | |
2836 | rv += nbytes; | |
2837 | } | |
2838 | done: | |
2839 | vfree(conbuf); | |
2840 | return rv; | |
2841 | } | |
2842 | ||
2843 | static int brcmf_sdio_trap_info(struct brcmf_sdio *bus, struct sdpcm_shared *sh, | |
2844 | char __user *data, size_t count) | |
2845 | { | |
2846 | int error, res; | |
2847 | char buf[350]; | |
2848 | struct brcmf_trap_info tr; | |
2849 | int nbytes; | |
2850 | loff_t pos = 0; | |
2851 | ||
2852 | if ((sh->flags & SDPCM_SHARED_TRAP) == 0) | |
2853 | return 0; | |
2854 | ||
38b0b0dd | 2855 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2856 | error = brcmf_sdbrcm_membytes(bus, false, sh->trap_addr, (u8 *)&tr, |
2857 | sizeof(struct brcmf_trap_info)); | |
2858 | if (error < 0) | |
2859 | return error; | |
2860 | ||
2861 | nbytes = brcmf_sdio_dump_console(bus, sh, data, count); | |
38b0b0dd | 2862 | sdio_release_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2863 | if (nbytes < 0) |
2864 | return nbytes; | |
2865 | ||
2866 | res = scnprintf(buf, sizeof(buf), | |
2867 | "dongle trap info: type 0x%x @ epc 0x%08x\n" | |
2868 | " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n" | |
2869 | " lr 0x%08x pc 0x%08x offset 0x%x\n" | |
2870 | " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n" | |
2871 | " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n", | |
2872 | le32_to_cpu(tr.type), le32_to_cpu(tr.epc), | |
2873 | le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr), | |
2874 | le32_to_cpu(tr.r13), le32_to_cpu(tr.r14), | |
9bd02c6b | 2875 | le32_to_cpu(tr.pc), sh->trap_addr, |
4fc0d016 AS |
2876 | le32_to_cpu(tr.r0), le32_to_cpu(tr.r1), |
2877 | le32_to_cpu(tr.r2), le32_to_cpu(tr.r3), | |
2878 | le32_to_cpu(tr.r4), le32_to_cpu(tr.r5), | |
2879 | le32_to_cpu(tr.r6), le32_to_cpu(tr.r7)); | |
2880 | ||
2881 | error = simple_read_from_buffer(data+nbytes, count, &pos, buf, res); | |
2882 | if (error < 0) | |
2883 | return error; | |
2884 | ||
2885 | nbytes += error; | |
2886 | return nbytes; | |
2887 | } | |
2888 | ||
2889 | static int brcmf_sdio_assert_info(struct brcmf_sdio *bus, | |
2890 | struct sdpcm_shared *sh, char __user *data, | |
2891 | size_t count) | |
2892 | { | |
2893 | int error = 0; | |
2894 | char buf[200]; | |
2895 | char file[80] = "?"; | |
2896 | char expr[80] = "<???>"; | |
2897 | int res; | |
2898 | loff_t pos = 0; | |
2899 | ||
2900 | if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) { | |
2901 | brcmf_dbg(INFO, "firmware not built with -assert\n"); | |
2902 | return 0; | |
2903 | } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) { | |
2904 | brcmf_dbg(INFO, "no assert in dongle\n"); | |
2905 | return 0; | |
2906 | } | |
2907 | ||
38b0b0dd | 2908 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2909 | if (sh->assert_file_addr != 0) { |
2910 | error = brcmf_sdbrcm_membytes(bus, false, sh->assert_file_addr, | |
2911 | (u8 *)file, 80); | |
2912 | if (error < 0) | |
2913 | return error; | |
2914 | } | |
2915 | if (sh->assert_exp_addr != 0) { | |
2916 | error = brcmf_sdbrcm_membytes(bus, false, sh->assert_exp_addr, | |
2917 | (u8 *)expr, 80); | |
2918 | if (error < 0) | |
2919 | return error; | |
2920 | } | |
38b0b0dd | 2921 | sdio_release_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2922 | |
2923 | res = scnprintf(buf, sizeof(buf), | |
2924 | "dongle assert: %s:%d: assert(%s)\n", | |
2925 | file, sh->assert_line, expr); | |
2926 | return simple_read_from_buffer(data, count, &pos, buf, res); | |
2927 | } | |
2928 | ||
2929 | static int brcmf_sdbrcm_checkdied(struct brcmf_sdio *bus) | |
2930 | { | |
2931 | int error; | |
2932 | struct sdpcm_shared sh; | |
2933 | ||
4fc0d016 | 2934 | error = brcmf_sdio_readshared(bus, &sh); |
4fc0d016 AS |
2935 | |
2936 | if (error < 0) | |
2937 | return error; | |
2938 | ||
2939 | if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) | |
2940 | brcmf_dbg(INFO, "firmware not built with -assert\n"); | |
2941 | else if (sh.flags & SDPCM_SHARED_ASSERT) | |
2942 | brcmf_dbg(ERROR, "assertion in dongle\n"); | |
2943 | ||
2944 | if (sh.flags & SDPCM_SHARED_TRAP) | |
2945 | brcmf_dbg(ERROR, "firmware trap in dongle\n"); | |
2946 | ||
2947 | return 0; | |
2948 | } | |
2949 | ||
2950 | static int brcmf_sdbrcm_died_dump(struct brcmf_sdio *bus, char __user *data, | |
2951 | size_t count, loff_t *ppos) | |
2952 | { | |
2953 | int error = 0; | |
2954 | struct sdpcm_shared sh; | |
2955 | int nbytes = 0; | |
2956 | loff_t pos = *ppos; | |
2957 | ||
2958 | if (pos != 0) | |
2959 | return 0; | |
2960 | ||
4fc0d016 AS |
2961 | error = brcmf_sdio_readshared(bus, &sh); |
2962 | if (error < 0) | |
2963 | goto done; | |
2964 | ||
2965 | error = brcmf_sdio_assert_info(bus, &sh, data, count); | |
2966 | if (error < 0) | |
2967 | goto done; | |
2968 | ||
2969 | nbytes = error; | |
2970 | error = brcmf_sdio_trap_info(bus, &sh, data, count); | |
2971 | if (error < 0) | |
2972 | goto done; | |
2973 | ||
2974 | error += nbytes; | |
2975 | *ppos += error; | |
2976 | done: | |
4fc0d016 AS |
2977 | return error; |
2978 | } | |
2979 | ||
2980 | static ssize_t brcmf_sdio_forensic_read(struct file *f, char __user *data, | |
2981 | size_t count, loff_t *ppos) | |
2982 | { | |
2983 | struct brcmf_sdio *bus = f->private_data; | |
2984 | int res; | |
2985 | ||
2986 | res = brcmf_sdbrcm_died_dump(bus, data, count, ppos); | |
2987 | if (res > 0) | |
2988 | *ppos += res; | |
2989 | return (ssize_t)res; | |
2990 | } | |
2991 | ||
2992 | static const struct file_operations brcmf_sdio_forensic_ops = { | |
2993 | .owner = THIS_MODULE, | |
2994 | .open = simple_open, | |
2995 | .read = brcmf_sdio_forensic_read | |
2996 | }; | |
2997 | ||
80969836 AS |
2998 | static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) |
2999 | { | |
3000 | struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr; | |
4fc0d016 | 3001 | struct dentry *dentry = brcmf_debugfs_get_devdir(drvr); |
80969836 | 3002 | |
4fc0d016 AS |
3003 | if (IS_ERR_OR_NULL(dentry)) |
3004 | return; | |
3005 | ||
3006 | debugfs_create_file("forensics", S_IRUGO, dentry, bus, | |
3007 | &brcmf_sdio_forensic_ops); | |
80969836 AS |
3008 | brcmf_debugfs_create_sdio_count(drvr, &bus->sdcnt); |
3009 | } | |
3010 | #else | |
4fc0d016 AS |
3011 | static int brcmf_sdbrcm_checkdied(struct brcmf_sdio *bus) |
3012 | { | |
3013 | return 0; | |
3014 | } | |
3015 | ||
80969836 AS |
3016 | static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) |
3017 | { | |
3018 | } | |
3019 | #endif /* DEBUG */ | |
3020 | ||
fcf094f4 | 3021 | static int |
532cdd3b | 3022 | brcmf_sdbrcm_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen) |
5b435de0 AS |
3023 | { |
3024 | int timeleft; | |
3025 | uint rxlen = 0; | |
3026 | bool pending; | |
dd43a01c | 3027 | u8 *buf; |
532cdd3b | 3028 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 3029 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
532cdd3b | 3030 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 AS |
3031 | |
3032 | brcmf_dbg(TRACE, "Enter\n"); | |
3033 | ||
3034 | /* Wait until control frame is available */ | |
3035 | timeleft = brcmf_sdbrcm_dcmd_resp_wait(bus, &bus->rxlen, &pending); | |
3036 | ||
dd43a01c | 3037 | spin_lock_bh(&bus->rxctl_lock); |
5b435de0 AS |
3038 | rxlen = bus->rxlen; |
3039 | memcpy(msg, bus->rxctl, min(msglen, rxlen)); | |
dd43a01c FL |
3040 | bus->rxctl = NULL; |
3041 | buf = bus->rxctl_orig; | |
3042 | bus->rxctl_orig = NULL; | |
5b435de0 | 3043 | bus->rxlen = 0; |
dd43a01c FL |
3044 | spin_unlock_bh(&bus->rxctl_lock); |
3045 | vfree(buf); | |
5b435de0 AS |
3046 | |
3047 | if (rxlen) { | |
3048 | brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n", | |
3049 | rxlen, msglen); | |
3050 | } else if (timeleft == 0) { | |
3051 | brcmf_dbg(ERROR, "resumed on timeout\n"); | |
4fc0d016 | 3052 | brcmf_sdbrcm_checkdied(bus); |
23677ce3 | 3053 | } else if (pending) { |
5b435de0 AS |
3054 | brcmf_dbg(CTL, "cancelled\n"); |
3055 | return -ERESTARTSYS; | |
3056 | } else { | |
3057 | brcmf_dbg(CTL, "resumed for unknown reason?\n"); | |
4fc0d016 | 3058 | brcmf_sdbrcm_checkdied(bus); |
5b435de0 AS |
3059 | } |
3060 | ||
3061 | if (rxlen) | |
80969836 | 3062 | bus->sdcnt.rx_ctlpkts++; |
5b435de0 | 3063 | else |
80969836 | 3064 | bus->sdcnt.rx_ctlerrs++; |
5b435de0 AS |
3065 | |
3066 | return rxlen ? (int)rxlen : -ETIMEDOUT; | |
3067 | } | |
3068 | ||
e92eedf4 | 3069 | static int brcmf_sdbrcm_write_vars(struct brcmf_sdio *bus) |
5b435de0 AS |
3070 | { |
3071 | int bcmerror = 0; | |
5b435de0 | 3072 | u32 varaddr; |
5b435de0 AS |
3073 | u32 varsizew; |
3074 | __le32 varsizew_le; | |
8ae74654 | 3075 | #ifdef DEBUG |
5b435de0 | 3076 | char *nvram_ularray; |
8ae74654 | 3077 | #endif /* DEBUG */ |
5b435de0 AS |
3078 | |
3079 | /* Even if there are no vars are to be written, we still | |
3080 | need to set the ramsize. */ | |
6d4ef680 | 3081 | varaddr = (bus->ramsize - 4) - bus->varsz; |
5b435de0 AS |
3082 | |
3083 | if (bus->vars) { | |
5b435de0 | 3084 | /* Write the vars list */ |
6d4ef680 AS |
3085 | bcmerror = brcmf_sdbrcm_membytes(bus, true, varaddr, |
3086 | bus->vars, bus->varsz); | |
8ae74654 | 3087 | #ifdef DEBUG |
5b435de0 | 3088 | /* Verify NVRAM bytes */ |
6d4ef680 AS |
3089 | brcmf_dbg(INFO, "Compare NVRAM dl & ul; varsize=%d\n", |
3090 | bus->varsz); | |
3091 | nvram_ularray = kmalloc(bus->varsz, GFP_ATOMIC); | |
3092 | if (!nvram_ularray) | |
5b435de0 AS |
3093 | return -ENOMEM; |
3094 | ||
3095 | /* Upload image to verify downloaded contents. */ | |
6d4ef680 | 3096 | memset(nvram_ularray, 0xaa, bus->varsz); |
5b435de0 AS |
3097 | |
3098 | /* Read the vars list to temp buffer for comparison */ | |
6d4ef680 AS |
3099 | bcmerror = brcmf_sdbrcm_membytes(bus, false, varaddr, |
3100 | nvram_ularray, bus->varsz); | |
5b435de0 AS |
3101 | if (bcmerror) { |
3102 | brcmf_dbg(ERROR, "error %d on reading %d nvram bytes at 0x%08x\n", | |
6d4ef680 | 3103 | bcmerror, bus->varsz, varaddr); |
5b435de0 AS |
3104 | } |
3105 | /* Compare the org NVRAM with the one read from RAM */ | |
6d4ef680 | 3106 | if (memcmp(bus->vars, nvram_ularray, bus->varsz)) |
5b435de0 AS |
3107 | brcmf_dbg(ERROR, "Downloaded NVRAM image is corrupted\n"); |
3108 | else | |
3109 | brcmf_dbg(ERROR, "Download/Upload/Compare of NVRAM ok\n"); | |
3110 | ||
3111 | kfree(nvram_ularray); | |
8ae74654 | 3112 | #endif /* DEBUG */ |
5b435de0 AS |
3113 | } |
3114 | ||
3115 | /* adjust to the user specified RAM */ | |
3116 | brcmf_dbg(INFO, "Physical memory size: %d\n", bus->ramsize); | |
3117 | brcmf_dbg(INFO, "Vars are at %d, orig varsize is %d\n", | |
6d4ef680 | 3118 | varaddr, bus->varsz); |
5b435de0 AS |
3119 | |
3120 | /* | |
3121 | * Determine the length token: | |
3122 | * Varsize, converted to words, in lower 16-bits, checksum | |
3123 | * in upper 16-bits. | |
3124 | */ | |
3125 | if (bcmerror) { | |
3126 | varsizew = 0; | |
3127 | varsizew_le = cpu_to_le32(0); | |
3128 | } else { | |
6d4ef680 | 3129 | varsizew = bus->varsz / 4; |
5b435de0 AS |
3130 | varsizew = (~varsizew << 16) | (varsizew & 0x0000FFFF); |
3131 | varsizew_le = cpu_to_le32(varsizew); | |
3132 | } | |
3133 | ||
3134 | brcmf_dbg(INFO, "New varsize is %d, length token=0x%08x\n", | |
6d4ef680 | 3135 | bus->varsz, varsizew); |
5b435de0 AS |
3136 | |
3137 | /* Write the length token to the last word */ | |
3138 | bcmerror = brcmf_sdbrcm_membytes(bus, true, (bus->ramsize - 4), | |
3139 | (u8 *)&varsizew_le, 4); | |
3140 | ||
3141 | return bcmerror; | |
3142 | } | |
3143 | ||
e92eedf4 | 3144 | static int brcmf_sdbrcm_download_state(struct brcmf_sdio *bus, bool enter) |
5b435de0 | 3145 | { |
5b435de0 | 3146 | int bcmerror = 0; |
99ba15cd | 3147 | struct chip_info *ci = bus->ci; |
5b435de0 AS |
3148 | |
3149 | /* To enter download state, disable ARM and reset SOCRAM. | |
3150 | * To exit download state, simply reset ARM (default is RAM boot). | |
3151 | */ | |
3152 | if (enter) { | |
3153 | bus->alp_only = true; | |
3154 | ||
086a2e0a | 3155 | ci->coredisable(bus->sdiodev, ci, BCMA_CORE_ARM_CM3); |
5b435de0 | 3156 | |
d77e70ff | 3157 | ci->resetcore(bus->sdiodev, ci, BCMA_CORE_INTERNAL_MEM); |
5b435de0 AS |
3158 | |
3159 | /* Clear the top bit of memory */ | |
3160 | if (bus->ramsize) { | |
3161 | u32 zeros = 0; | |
3162 | brcmf_sdbrcm_membytes(bus, true, bus->ramsize - 4, | |
3163 | (u8 *)&zeros, 4); | |
3164 | } | |
3165 | } else { | |
6ca687d9 | 3166 | if (!ci->iscoreup(bus->sdiodev, ci, BCMA_CORE_INTERNAL_MEM)) { |
5b435de0 AS |
3167 | brcmf_dbg(ERROR, "SOCRAM core is down after reset?\n"); |
3168 | bcmerror = -EBADE; | |
3169 | goto fail; | |
3170 | } | |
3171 | ||
3172 | bcmerror = brcmf_sdbrcm_write_vars(bus); | |
3173 | if (bcmerror) { | |
3174 | brcmf_dbg(ERROR, "no vars written to RAM\n"); | |
3175 | bcmerror = 0; | |
3176 | } | |
3177 | ||
3178 | w_sdreg32(bus, 0xFFFFFFFF, | |
58692750 | 3179 | offsetof(struct sdpcmd_regs, intstatus)); |
5b435de0 | 3180 | |
d77e70ff | 3181 | ci->resetcore(bus->sdiodev, ci, BCMA_CORE_ARM_CM3); |
5b435de0 AS |
3182 | |
3183 | /* Allow HT Clock now that the ARM is running. */ | |
3184 | bus->alp_only = false; | |
3185 | ||
712ac5b3 | 3186 | bus->sdiodev->bus_if->state = BRCMF_BUS_LOAD; |
5b435de0 AS |
3187 | } |
3188 | fail: | |
3189 | return bcmerror; | |
3190 | } | |
3191 | ||
e92eedf4 | 3192 | static int brcmf_sdbrcm_get_image(char *buf, int len, struct brcmf_sdio *bus) |
5b435de0 AS |
3193 | { |
3194 | if (bus->firmware->size < bus->fw_ptr + len) | |
3195 | len = bus->firmware->size - bus->fw_ptr; | |
3196 | ||
3197 | memcpy(buf, &bus->firmware->data[bus->fw_ptr], len); | |
3198 | bus->fw_ptr += len; | |
3199 | return len; | |
3200 | } | |
3201 | ||
e92eedf4 | 3202 | static int brcmf_sdbrcm_download_code_file(struct brcmf_sdio *bus) |
5b435de0 AS |
3203 | { |
3204 | int offset = 0; | |
3205 | uint len; | |
3206 | u8 *memblock = NULL, *memptr; | |
3207 | int ret; | |
3208 | ||
3209 | brcmf_dbg(INFO, "Enter\n"); | |
3210 | ||
52e1409f | 3211 | ret = request_firmware(&bus->firmware, BRCMF_SDIO_FW_NAME, |
5b435de0 AS |
3212 | &bus->sdiodev->func[2]->dev); |
3213 | if (ret) { | |
3214 | brcmf_dbg(ERROR, "Fail to request firmware %d\n", ret); | |
3215 | return ret; | |
3216 | } | |
3217 | bus->fw_ptr = 0; | |
3218 | ||
3219 | memptr = memblock = kmalloc(MEMBLOCK + BRCMF_SDALIGN, GFP_ATOMIC); | |
3220 | if (memblock == NULL) { | |
3221 | ret = -ENOMEM; | |
3222 | goto err; | |
3223 | } | |
3224 | if ((u32)(unsigned long)memblock % BRCMF_SDALIGN) | |
3225 | memptr += (BRCMF_SDALIGN - | |
3226 | ((u32)(unsigned long)memblock % BRCMF_SDALIGN)); | |
3227 | ||
3228 | /* Download image */ | |
3229 | while ((len = | |
3230 | brcmf_sdbrcm_get_image((char *)memptr, MEMBLOCK, bus))) { | |
3231 | ret = brcmf_sdbrcm_membytes(bus, true, offset, memptr, len); | |
3232 | if (ret) { | |
3233 | brcmf_dbg(ERROR, "error %d on writing %d membytes at 0x%08x\n", | |
3234 | ret, MEMBLOCK, offset); | |
3235 | goto err; | |
3236 | } | |
3237 | ||
3238 | offset += MEMBLOCK; | |
3239 | } | |
3240 | ||
3241 | err: | |
3242 | kfree(memblock); | |
3243 | ||
3244 | release_firmware(bus->firmware); | |
3245 | bus->fw_ptr = 0; | |
3246 | ||
3247 | return ret; | |
3248 | } | |
3249 | ||
3250 | /* | |
3251 | * ProcessVars:Takes a buffer of "<var>=<value>\n" lines read from a file | |
3252 | * and ending in a NUL. | |
3253 | * Removes carriage returns, empty lines, comment lines, and converts | |
3254 | * newlines to NULs. | |
3255 | * Shortens buffer as needed and pads with NULs. End of buffer is marked | |
3256 | * by two NULs. | |
3257 | */ | |
3258 | ||
d610cde3 | 3259 | static int brcmf_process_nvram_vars(struct brcmf_sdio *bus) |
5b435de0 | 3260 | { |
d610cde3 | 3261 | char *varbuf; |
5b435de0 AS |
3262 | char *dp; |
3263 | bool findNewline; | |
3264 | int column; | |
d610cde3 FL |
3265 | int ret = 0; |
3266 | uint buf_len, n, len; | |
3267 | ||
3268 | len = bus->firmware->size; | |
3269 | varbuf = vmalloc(len); | |
3270 | if (!varbuf) | |
3271 | return -ENOMEM; | |
5b435de0 | 3272 | |
d610cde3 | 3273 | memcpy(varbuf, bus->firmware->data, len); |
5b435de0 AS |
3274 | dp = varbuf; |
3275 | ||
3276 | findNewline = false; | |
3277 | column = 0; | |
3278 | ||
3279 | for (n = 0; n < len; n++) { | |
3280 | if (varbuf[n] == 0) | |
3281 | break; | |
3282 | if (varbuf[n] == '\r') | |
3283 | continue; | |
3284 | if (findNewline && varbuf[n] != '\n') | |
3285 | continue; | |
3286 | findNewline = false; | |
3287 | if (varbuf[n] == '#') { | |
3288 | findNewline = true; | |
3289 | continue; | |
3290 | } | |
3291 | if (varbuf[n] == '\n') { | |
3292 | if (column == 0) | |
3293 | continue; | |
3294 | *dp++ = 0; | |
3295 | column = 0; | |
3296 | continue; | |
3297 | } | |
3298 | *dp++ = varbuf[n]; | |
3299 | column++; | |
3300 | } | |
3301 | buf_len = dp - varbuf; | |
5b435de0 AS |
3302 | while (dp < varbuf + n) |
3303 | *dp++ = 0; | |
3304 | ||
d610cde3 | 3305 | kfree(bus->vars); |
6d4ef680 AS |
3306 | /* roundup needed for download to device */ |
3307 | bus->varsz = roundup(buf_len + 1, 4); | |
d610cde3 FL |
3308 | bus->vars = kmalloc(bus->varsz, GFP_KERNEL); |
3309 | if (bus->vars == NULL) { | |
3310 | bus->varsz = 0; | |
3311 | ret = -ENOMEM; | |
3312 | goto err; | |
3313 | } | |
3314 | ||
3315 | /* copy the processed variables and add null termination */ | |
3316 | memcpy(bus->vars, varbuf, buf_len); | |
3317 | bus->vars[buf_len] = 0; | |
3318 | err: | |
3319 | vfree(varbuf); | |
3320 | return ret; | |
5b435de0 AS |
3321 | } |
3322 | ||
e92eedf4 | 3323 | static int brcmf_sdbrcm_download_nvram(struct brcmf_sdio *bus) |
5b435de0 | 3324 | { |
5b435de0 AS |
3325 | int ret; |
3326 | ||
d610cde3 FL |
3327 | if (bus->sdiodev->bus_if->drvr_up) |
3328 | return -EISCONN; | |
3329 | ||
52e1409f | 3330 | ret = request_firmware(&bus->firmware, BRCMF_SDIO_NV_NAME, |
5b435de0 AS |
3331 | &bus->sdiodev->func[2]->dev); |
3332 | if (ret) { | |
3333 | brcmf_dbg(ERROR, "Fail to request nvram %d\n", ret); | |
3334 | return ret; | |
3335 | } | |
5b435de0 | 3336 | |
d610cde3 | 3337 | ret = brcmf_process_nvram_vars(bus); |
5b435de0 AS |
3338 | |
3339 | release_firmware(bus->firmware); | |
5b435de0 AS |
3340 | |
3341 | return ret; | |
3342 | } | |
3343 | ||
e92eedf4 | 3344 | static int _brcmf_sdbrcm_download_firmware(struct brcmf_sdio *bus) |
5b435de0 AS |
3345 | { |
3346 | int bcmerror = -1; | |
3347 | ||
3348 | /* Keep arm in reset */ | |
3349 | if (brcmf_sdbrcm_download_state(bus, true)) { | |
3350 | brcmf_dbg(ERROR, "error placing ARM core in reset\n"); | |
3351 | goto err; | |
3352 | } | |
3353 | ||
3354 | /* External image takes precedence if specified */ | |
3355 | if (brcmf_sdbrcm_download_code_file(bus)) { | |
3356 | brcmf_dbg(ERROR, "dongle image file download failed\n"); | |
3357 | goto err; | |
3358 | } | |
3359 | ||
3360 | /* External nvram takes precedence if specified */ | |
3361 | if (brcmf_sdbrcm_download_nvram(bus)) | |
3362 | brcmf_dbg(ERROR, "dongle nvram file download failed\n"); | |
3363 | ||
3364 | /* Take arm out of reset */ | |
3365 | if (brcmf_sdbrcm_download_state(bus, false)) { | |
3366 | brcmf_dbg(ERROR, "error getting out of ARM core reset\n"); | |
3367 | goto err; | |
3368 | } | |
3369 | ||
3370 | bcmerror = 0; | |
3371 | ||
3372 | err: | |
3373 | return bcmerror; | |
3374 | } | |
3375 | ||
3376 | static bool | |
e92eedf4 | 3377 | brcmf_sdbrcm_download_firmware(struct brcmf_sdio *bus) |
5b435de0 AS |
3378 | { |
3379 | bool ret; | |
3380 | ||
38b0b0dd FL |
3381 | sdio_claim_host(bus->sdiodev->func[1]); |
3382 | ||
5b435de0 AS |
3383 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
3384 | ||
3385 | ret = _brcmf_sdbrcm_download_firmware(bus) == 0; | |
3386 | ||
3387 | brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); | |
3388 | ||
38b0b0dd FL |
3389 | sdio_release_host(bus->sdiodev->func[1]); |
3390 | ||
5b435de0 AS |
3391 | return ret; |
3392 | } | |
3393 | ||
99a0b8ff | 3394 | static int brcmf_sdbrcm_bus_init(struct device *dev) |
5b435de0 | 3395 | { |
fa20b911 | 3396 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 3397 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
fa20b911 | 3398 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 | 3399 | unsigned long timeout; |
5b435de0 AS |
3400 | u8 ready, enable; |
3401 | int err, ret = 0; | |
3402 | u8 saveclk; | |
3403 | ||
3404 | brcmf_dbg(TRACE, "Enter\n"); | |
3405 | ||
3406 | /* try to download image and nvram to the dongle */ | |
fa20b911 | 3407 | if (bus_if->state == BRCMF_BUS_DOWN) { |
5b435de0 AS |
3408 | if (!(brcmf_sdbrcm_download_firmware(bus))) |
3409 | return -1; | |
3410 | } | |
3411 | ||
712ac5b3 | 3412 | if (!bus->sdiodev->bus_if->drvr) |
5b435de0 AS |
3413 | return 0; |
3414 | ||
3415 | /* Start the watchdog timer */ | |
80969836 | 3416 | bus->sdcnt.tickcnt = 0; |
5b435de0 AS |
3417 | brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); |
3418 | ||
38b0b0dd | 3419 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3420 | |
3421 | /* Make sure backplane clock is on, needed to generate F2 interrupt */ | |
3422 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); | |
3423 | if (bus->clkstate != CLK_AVAIL) | |
3424 | goto exit; | |
3425 | ||
3426 | /* Force clocks on backplane to be sure F2 interrupt propagates */ | |
45db339c FL |
3427 | saveclk = brcmf_sdio_regrb(bus->sdiodev, |
3428 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 3429 | if (!err) { |
3bba829f FL |
3430 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3431 | (saveclk | SBSDIO_FORCE_HT), &err); | |
5b435de0 AS |
3432 | } |
3433 | if (err) { | |
3434 | brcmf_dbg(ERROR, "Failed to force clock for F2: err %d\n", err); | |
3435 | goto exit; | |
3436 | } | |
3437 | ||
3438 | /* Enable function 2 (frame transfers) */ | |
3439 | w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, | |
58692750 | 3440 | offsetof(struct sdpcmd_regs, tosbmailboxdata)); |
5b435de0 AS |
3441 | enable = (SDIO_FUNC_ENABLE_1 | SDIO_FUNC_ENABLE_2); |
3442 | ||
3bba829f | 3443 | brcmf_sdio_regwb(bus->sdiodev, SDIO_CCCR_IOEx, enable, NULL); |
5b435de0 AS |
3444 | |
3445 | timeout = jiffies + msecs_to_jiffies(BRCMF_WAIT_F2RDY); | |
3446 | ready = 0; | |
3447 | while (enable != ready) { | |
45db339c FL |
3448 | ready = brcmf_sdio_regrb(bus->sdiodev, |
3449 | SDIO_CCCR_IORx, NULL); | |
5b435de0 AS |
3450 | if (time_after(jiffies, timeout)) |
3451 | break; | |
3452 | else if (time_after(jiffies, timeout - BRCMF_WAIT_F2RDY + 50)) | |
3453 | /* prevent busy waiting if it takes too long */ | |
3454 | msleep_interruptible(20); | |
3455 | } | |
3456 | ||
3457 | brcmf_dbg(INFO, "enable 0x%02x, ready 0x%02x\n", enable, ready); | |
3458 | ||
3459 | /* If F2 successfully enabled, set core and enable interrupts */ | |
3460 | if (ready == enable) { | |
3461 | /* Set up the interrupt mask and enable interrupts */ | |
3462 | bus->hostintmask = HOSTINTMASK; | |
3463 | w_sdreg32(bus, bus->hostintmask, | |
58692750 | 3464 | offsetof(struct sdpcmd_regs, hostintmask)); |
5b435de0 | 3465 | |
3bba829f | 3466 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_WATERMARK, 8, &err); |
c0e89f08 | 3467 | } else { |
5b435de0 AS |
3468 | /* Disable F2 again */ |
3469 | enable = SDIO_FUNC_ENABLE_1; | |
3bba829f | 3470 | brcmf_sdio_regwb(bus->sdiodev, SDIO_CCCR_IOEx, enable, NULL); |
c0e89f08 | 3471 | ret = -ENODEV; |
5b435de0 AS |
3472 | } |
3473 | ||
3474 | /* Restore previous clock setting */ | |
3bba829f | 3475 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, saveclk, &err); |
5b435de0 | 3476 | |
e2f93cc3 | 3477 | if (ret == 0) { |
ba89bf19 | 3478 | ret = brcmf_sdio_intr_register(bus->sdiodev); |
e2f93cc3 FL |
3479 | if (ret != 0) |
3480 | brcmf_dbg(ERROR, "intr register failed:%d\n", ret); | |
3481 | } | |
3482 | ||
5b435de0 | 3483 | /* If we didn't come up, turn off backplane clock */ |
d9126e0c | 3484 | if (bus_if->state != BRCMF_BUS_DATA) |
5b435de0 AS |
3485 | brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); |
3486 | ||
3487 | exit: | |
38b0b0dd | 3488 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3489 | |
3490 | return ret; | |
3491 | } | |
3492 | ||
3493 | void brcmf_sdbrcm_isr(void *arg) | |
3494 | { | |
e92eedf4 | 3495 | struct brcmf_sdio *bus = (struct brcmf_sdio *) arg; |
5b435de0 AS |
3496 | |
3497 | brcmf_dbg(TRACE, "Enter\n"); | |
3498 | ||
3499 | if (!bus) { | |
3500 | brcmf_dbg(ERROR, "bus is null pointer, exiting\n"); | |
3501 | return; | |
3502 | } | |
3503 | ||
712ac5b3 | 3504 | if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) { |
5b435de0 AS |
3505 | brcmf_dbg(ERROR, "bus is down. we have nothing to do\n"); |
3506 | return; | |
3507 | } | |
3508 | /* Count the interrupt call */ | |
80969836 | 3509 | bus->sdcnt.intrcount++; |
4531603a FL |
3510 | if (in_interrupt()) |
3511 | atomic_set(&bus->ipend, 1); | |
3512 | else | |
3513 | if (brcmf_sdio_intr_rstatus(bus)) { | |
3514 | brcmf_dbg(ERROR, "failed backplane access\n"); | |
3515 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; | |
3516 | } | |
5b435de0 | 3517 | |
5b435de0 AS |
3518 | /* Disable additional interrupts (is this needed now)? */ |
3519 | if (!bus->intr) | |
3520 | brcmf_dbg(ERROR, "isr w/o interrupt configured!\n"); | |
3521 | ||
f1e68c2e FL |
3522 | brcmf_sdbrcm_adddpctsk(bus); |
3523 | queue_work(bus->brcmf_wq, &bus->datawork); | |
5b435de0 AS |
3524 | } |
3525 | ||
cad2b26b | 3526 | static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus) |
5b435de0 | 3527 | { |
8ae74654 | 3528 | #ifdef DEBUG |
cad2b26b | 3529 | struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev); |
8ae74654 | 3530 | #endif /* DEBUG */ |
f1e68c2e | 3531 | unsigned long flags; |
5b435de0 AS |
3532 | |
3533 | brcmf_dbg(TIMER, "Enter\n"); | |
3534 | ||
5b435de0 AS |
3535 | /* Poll period: check device if appropriate. */ |
3536 | if (bus->poll && (++bus->polltick >= bus->pollrate)) { | |
3537 | u32 intstatus = 0; | |
3538 | ||
3539 | /* Reset poll tick */ | |
3540 | bus->polltick = 0; | |
3541 | ||
3542 | /* Check device if no interrupts */ | |
80969836 AS |
3543 | if (!bus->intr || |
3544 | (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) { | |
5b435de0 | 3545 | |
f1e68c2e FL |
3546 | spin_lock_irqsave(&bus->dpc_tl_lock, flags); |
3547 | if (list_empty(&bus->dpc_tsklst)) { | |
5b435de0 | 3548 | u8 devpend; |
f1e68c2e FL |
3549 | spin_unlock_irqrestore(&bus->dpc_tl_lock, |
3550 | flags); | |
38b0b0dd | 3551 | sdio_claim_host(bus->sdiodev->func[1]); |
45db339c FL |
3552 | devpend = brcmf_sdio_regrb(bus->sdiodev, |
3553 | SDIO_CCCR_INTx, | |
3554 | NULL); | |
38b0b0dd | 3555 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3556 | intstatus = |
3557 | devpend & (INTR_STATUS_FUNC1 | | |
3558 | INTR_STATUS_FUNC2); | |
f1e68c2e FL |
3559 | } else { |
3560 | spin_unlock_irqrestore(&bus->dpc_tl_lock, | |
3561 | flags); | |
5b435de0 AS |
3562 | } |
3563 | ||
3564 | /* If there is something, make like the ISR and | |
3565 | schedule the DPC */ | |
3566 | if (intstatus) { | |
80969836 | 3567 | bus->sdcnt.pollcnt++; |
1d382273 | 3568 | atomic_set(&bus->ipend, 1); |
5b435de0 | 3569 | |
f1e68c2e FL |
3570 | brcmf_sdbrcm_adddpctsk(bus); |
3571 | queue_work(bus->brcmf_wq, &bus->datawork); | |
5b435de0 AS |
3572 | } |
3573 | } | |
3574 | ||
3575 | /* Update interrupt tracking */ | |
80969836 | 3576 | bus->sdcnt.lastintrs = bus->sdcnt.intrcount; |
5b435de0 | 3577 | } |
8ae74654 | 3578 | #ifdef DEBUG |
5b435de0 | 3579 | /* Poll for console output periodically */ |
cad2b26b | 3580 | if (bus_if->state == BRCMF_BUS_DATA && |
8d169aa0 | 3581 | bus->console_interval != 0) { |
5b435de0 AS |
3582 | bus->console.count += BRCMF_WD_POLL_MS; |
3583 | if (bus->console.count >= bus->console_interval) { | |
3584 | bus->console.count -= bus->console_interval; | |
38b0b0dd | 3585 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3586 | /* Make sure backplane clock is on */ |
3587 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); | |
3588 | if (brcmf_sdbrcm_readconsole(bus) < 0) | |
3589 | /* stop on error */ | |
3590 | bus->console_interval = 0; | |
38b0b0dd | 3591 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3592 | } |
3593 | } | |
8ae74654 | 3594 | #endif /* DEBUG */ |
5b435de0 AS |
3595 | |
3596 | /* On idle timeout clear activity flag and/or turn off clock */ | |
3597 | if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { | |
3598 | if (++bus->idlecount >= bus->idletime) { | |
3599 | bus->idlecount = 0; | |
3600 | if (bus->activity) { | |
3601 | bus->activity = false; | |
3602 | brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); | |
3603 | } else { | |
38b0b0dd | 3604 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 3605 | brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); |
38b0b0dd | 3606 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3607 | } |
3608 | } | |
3609 | } | |
3610 | ||
1d382273 | 3611 | return (atomic_read(&bus->ipend) > 0); |
5b435de0 AS |
3612 | } |
3613 | ||
3614 | static bool brcmf_sdbrcm_chipmatch(u16 chipid) | |
3615 | { | |
4a1c02ce FL |
3616 | if (chipid == BCM43241_CHIP_ID) |
3617 | return true; | |
5b435de0 AS |
3618 | if (chipid == BCM4329_CHIP_ID) |
3619 | return true; | |
ce2d7d7e FL |
3620 | if (chipid == BCM4330_CHIP_ID) |
3621 | return true; | |
85a4a1c3 | 3622 | if (chipid == BCM4334_CHIP_ID) |
ce2d7d7e | 3623 | return true; |
5b435de0 AS |
3624 | return false; |
3625 | } | |
3626 | ||
f1e68c2e FL |
3627 | static void brcmf_sdio_dataworker(struct work_struct *work) |
3628 | { | |
3629 | struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio, | |
3630 | datawork); | |
3631 | struct list_head *cur_hd, *tmp_hd; | |
3632 | unsigned long flags; | |
3633 | ||
3634 | spin_lock_irqsave(&bus->dpc_tl_lock, flags); | |
3635 | list_for_each_safe(cur_hd, tmp_hd, &bus->dpc_tsklst) { | |
3636 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
3637 | ||
3638 | brcmf_sdbrcm_dpc(bus); | |
3639 | ||
3640 | spin_lock_irqsave(&bus->dpc_tl_lock, flags); | |
3641 | list_del(cur_hd); | |
3642 | kfree(cur_hd); | |
3643 | } | |
3644 | spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); | |
3645 | } | |
3646 | ||
e92eedf4 | 3647 | static void brcmf_sdbrcm_release_malloc(struct brcmf_sdio *bus) |
5b435de0 AS |
3648 | { |
3649 | brcmf_dbg(TRACE, "Enter\n"); | |
3650 | ||
3651 | kfree(bus->rxbuf); | |
3652 | bus->rxctl = bus->rxbuf = NULL; | |
3653 | bus->rxlen = 0; | |
3654 | ||
3655 | kfree(bus->databuf); | |
3656 | bus->databuf = NULL; | |
3657 | } | |
3658 | ||
e92eedf4 | 3659 | static bool brcmf_sdbrcm_probe_malloc(struct brcmf_sdio *bus) |
5b435de0 AS |
3660 | { |
3661 | brcmf_dbg(TRACE, "Enter\n"); | |
3662 | ||
b01a6b3c | 3663 | if (bus->sdiodev->bus_if->maxctl) { |
5b435de0 | 3664 | bus->rxblen = |
b01a6b3c | 3665 | roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN), |
5b435de0 AS |
3666 | ALIGNMENT) + BRCMF_SDALIGN; |
3667 | bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); | |
3668 | if (!(bus->rxbuf)) | |
3669 | goto fail; | |
3670 | } | |
3671 | ||
3672 | /* Allocate buffer to receive glomed packet */ | |
3673 | bus->databuf = kmalloc(MAX_DATA_BUF, GFP_ATOMIC); | |
3674 | if (!(bus->databuf)) { | |
3675 | /* release rxbuf which was already located as above */ | |
3676 | if (!bus->rxblen) | |
3677 | kfree(bus->rxbuf); | |
3678 | goto fail; | |
3679 | } | |
3680 | ||
3681 | /* Align the buffer */ | |
3682 | if ((unsigned long)bus->databuf % BRCMF_SDALIGN) | |
3683 | bus->dataptr = bus->databuf + (BRCMF_SDALIGN - | |
3684 | ((unsigned long)bus->databuf % BRCMF_SDALIGN)); | |
3685 | else | |
3686 | bus->dataptr = bus->databuf; | |
3687 | ||
3688 | return true; | |
3689 | ||
3690 | fail: | |
3691 | return false; | |
3692 | } | |
3693 | ||
5b435de0 | 3694 | static bool |
e92eedf4 | 3695 | brcmf_sdbrcm_probe_attach(struct brcmf_sdio *bus, u32 regsva) |
5b435de0 AS |
3696 | { |
3697 | u8 clkctl = 0; | |
3698 | int err = 0; | |
3699 | int reg_addr; | |
3700 | u32 reg_val; | |
99ba15cd | 3701 | u8 idx; |
5b435de0 AS |
3702 | |
3703 | bus->alp_only = true; | |
3704 | ||
38b0b0dd FL |
3705 | sdio_claim_host(bus->sdiodev->func[1]); |
3706 | ||
18aad4f8 | 3707 | pr_debug("F1 signature read @0x18000000=0x%4x\n", |
79ae3957 | 3708 | brcmf_sdio_regrl(bus->sdiodev, SI_ENUM_BASE, NULL)); |
5b435de0 AS |
3709 | |
3710 | /* | |
a97e4fc5 | 3711 | * Force PLL off until brcmf_sdio_chip_attach() |
5b435de0 AS |
3712 | * programs PLL control regs |
3713 | */ | |
3714 | ||
3bba829f FL |
3715 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3716 | BRCMF_INIT_CLKCTL1, &err); | |
5b435de0 | 3717 | if (!err) |
45db339c | 3718 | clkctl = brcmf_sdio_regrb(bus->sdiodev, |
5b435de0 AS |
3719 | SBSDIO_FUNC1_CHIPCLKCSR, &err); |
3720 | ||
3721 | if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) { | |
3722 | brcmf_dbg(ERROR, "ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n", | |
3723 | err, BRCMF_INIT_CLKCTL1, clkctl); | |
3724 | goto fail; | |
3725 | } | |
3726 | ||
a97e4fc5 FL |
3727 | if (brcmf_sdio_chip_attach(bus->sdiodev, &bus->ci, regsva)) { |
3728 | brcmf_dbg(ERROR, "brcmf_sdio_chip_attach failed!\n"); | |
5b435de0 AS |
3729 | goto fail; |
3730 | } | |
3731 | ||
3732 | if (!brcmf_sdbrcm_chipmatch((u16) bus->ci->chip)) { | |
3733 | brcmf_dbg(ERROR, "unsupported chip: 0x%04x\n", bus->ci->chip); | |
3734 | goto fail; | |
3735 | } | |
3736 | ||
e12afb6c FL |
3737 | brcmf_sdio_chip_drivestrengthinit(bus->sdiodev, bus->ci, |
3738 | SDIO_DRIVE_STRENGTH); | |
5b435de0 | 3739 | |
454d2a88 | 3740 | /* Get info on the SOCRAM cores... */ |
5b435de0 AS |
3741 | bus->ramsize = bus->ci->ramsize; |
3742 | if (!(bus->ramsize)) { | |
3743 | brcmf_dbg(ERROR, "failed to find SOCRAM memory!\n"); | |
3744 | goto fail; | |
3745 | } | |
3746 | ||
3747 | /* Set core control so an SDIO reset does a backplane reset */ | |
99ba15cd FL |
3748 | idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); |
3749 | reg_addr = bus->ci->c_inf[idx].base + | |
5b435de0 | 3750 | offsetof(struct sdpcmd_regs, corecontrol); |
79ae3957 | 3751 | reg_val = brcmf_sdio_regrl(bus->sdiodev, reg_addr, NULL); |
e13ce26b | 3752 | brcmf_sdio_regwl(bus->sdiodev, reg_addr, reg_val | CC_BPRESEN, NULL); |
5b435de0 | 3753 | |
38b0b0dd FL |
3754 | sdio_release_host(bus->sdiodev->func[1]); |
3755 | ||
5b435de0 AS |
3756 | brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); |
3757 | ||
3758 | /* Locate an appropriately-aligned portion of hdrbuf */ | |
3759 | bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], | |
3760 | BRCMF_SDALIGN); | |
3761 | ||
3762 | /* Set the poll and/or interrupt flags */ | |
3763 | bus->intr = true; | |
3764 | bus->poll = false; | |
3765 | if (bus->poll) | |
3766 | bus->pollrate = 1; | |
3767 | ||
3768 | return true; | |
3769 | ||
3770 | fail: | |
38b0b0dd | 3771 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3772 | return false; |
3773 | } | |
3774 | ||
e92eedf4 | 3775 | static bool brcmf_sdbrcm_probe_init(struct brcmf_sdio *bus) |
5b435de0 AS |
3776 | { |
3777 | brcmf_dbg(TRACE, "Enter\n"); | |
3778 | ||
38b0b0dd FL |
3779 | sdio_claim_host(bus->sdiodev->func[1]); |
3780 | ||
5b435de0 | 3781 | /* Disable F2 to clear any intermediate frame state on the dongle */ |
3bba829f FL |
3782 | brcmf_sdio_regwb(bus->sdiodev, SDIO_CCCR_IOEx, |
3783 | SDIO_FUNC_ENABLE_1, NULL); | |
5b435de0 | 3784 | |
712ac5b3 | 3785 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
3786 | bus->rxflow = false; |
3787 | ||
3788 | /* Done with backplane-dependent accesses, can drop clock... */ | |
3bba829f | 3789 | brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); |
5b435de0 | 3790 | |
38b0b0dd FL |
3791 | sdio_release_host(bus->sdiodev->func[1]); |
3792 | ||
5b435de0 AS |
3793 | /* ...and initialize clock/power states */ |
3794 | bus->clkstate = CLK_SDONLY; | |
3795 | bus->idletime = BRCMF_IDLE_INTERVAL; | |
3796 | bus->idleclock = BRCMF_IDLE_ACTIVE; | |
3797 | ||
3798 | /* Query the F2 block size, set roundup accordingly */ | |
3799 | bus->blocksize = bus->sdiodev->func[2]->cur_blksize; | |
3800 | bus->roundup = min(max_roundup, bus->blocksize); | |
3801 | ||
3802 | /* bus module does not support packet chaining */ | |
3803 | bus->use_rxchain = false; | |
3804 | bus->sd_rxchain = false; | |
3805 | ||
3806 | return true; | |
3807 | } | |
3808 | ||
3809 | static int | |
3810 | brcmf_sdbrcm_watchdog_thread(void *data) | |
3811 | { | |
e92eedf4 | 3812 | struct brcmf_sdio *bus = (struct brcmf_sdio *)data; |
5b435de0 AS |
3813 | |
3814 | allow_signal(SIGTERM); | |
3815 | /* Run until signal received */ | |
3816 | while (1) { | |
3817 | if (kthread_should_stop()) | |
3818 | break; | |
3819 | if (!wait_for_completion_interruptible(&bus->watchdog_wait)) { | |
cad2b26b | 3820 | brcmf_sdbrcm_bus_watchdog(bus); |
5b435de0 | 3821 | /* Count the tick for reference */ |
80969836 | 3822 | bus->sdcnt.tickcnt++; |
5b435de0 AS |
3823 | } else |
3824 | break; | |
3825 | } | |
3826 | return 0; | |
3827 | } | |
3828 | ||
3829 | static void | |
3830 | brcmf_sdbrcm_watchdog(unsigned long data) | |
3831 | { | |
e92eedf4 | 3832 | struct brcmf_sdio *bus = (struct brcmf_sdio *)data; |
5b435de0 AS |
3833 | |
3834 | if (bus->watchdog_tsk) { | |
3835 | complete(&bus->watchdog_wait); | |
3836 | /* Reschedule the watchdog */ | |
3837 | if (bus->wd_timer_valid) | |
3838 | mod_timer(&bus->timer, | |
3839 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000); | |
3840 | } | |
3841 | } | |
3842 | ||
e92eedf4 | 3843 | static void brcmf_sdbrcm_release_dongle(struct brcmf_sdio *bus) |
5b435de0 AS |
3844 | { |
3845 | brcmf_dbg(TRACE, "Enter\n"); | |
3846 | ||
3847 | if (bus->ci) { | |
38b0b0dd | 3848 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3849 | brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
3850 | brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); | |
38b0b0dd | 3851 | sdio_release_host(bus->sdiodev->func[1]); |
a8a6c045 | 3852 | brcmf_sdio_chip_detach(&bus->ci); |
5b435de0 AS |
3853 | if (bus->vars && bus->varsz) |
3854 | kfree(bus->vars); | |
3855 | bus->vars = NULL; | |
3856 | } | |
3857 | ||
3858 | brcmf_dbg(TRACE, "Disconnected\n"); | |
3859 | } | |
3860 | ||
3861 | /* Detach and free everything */ | |
e92eedf4 | 3862 | static void brcmf_sdbrcm_release(struct brcmf_sdio *bus) |
5b435de0 AS |
3863 | { |
3864 | brcmf_dbg(TRACE, "Enter\n"); | |
4fc0d016 | 3865 | |
5b435de0 AS |
3866 | if (bus) { |
3867 | /* De-register interrupt handler */ | |
ba89bf19 | 3868 | brcmf_sdio_intr_unregister(bus->sdiodev); |
5b435de0 | 3869 | |
f1e68c2e FL |
3870 | cancel_work_sync(&bus->datawork); |
3871 | destroy_workqueue(bus->brcmf_wq); | |
3872 | ||
5f947ad9 FL |
3873 | if (bus->sdiodev->bus_if->drvr) { |
3874 | brcmf_detach(bus->sdiodev->dev); | |
5b435de0 | 3875 | brcmf_sdbrcm_release_dongle(bus); |
5b435de0 AS |
3876 | } |
3877 | ||
3878 | brcmf_sdbrcm_release_malloc(bus); | |
3879 | ||
3880 | kfree(bus); | |
3881 | } | |
3882 | ||
3883 | brcmf_dbg(TRACE, "Disconnected\n"); | |
3884 | } | |
3885 | ||
4175b88b | 3886 | void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev) |
5b435de0 AS |
3887 | { |
3888 | int ret; | |
e92eedf4 | 3889 | struct brcmf_sdio *bus; |
bbfd6a66 FL |
3890 | struct brcmf_bus_dcmd *dlst; |
3891 | u32 dngl_txglom; | |
c3d2bc35 | 3892 | u32 dngl_txglomalign; |
bbfd6a66 | 3893 | u8 idx; |
5b435de0 | 3894 | |
5b435de0 AS |
3895 | brcmf_dbg(TRACE, "Enter\n"); |
3896 | ||
3897 | /* We make an assumption about address window mappings: | |
3898 | * regsva == SI_ENUM_BASE*/ | |
3899 | ||
3900 | /* Allocate private bus interface state */ | |
e92eedf4 | 3901 | bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC); |
5b435de0 AS |
3902 | if (!bus) |
3903 | goto fail; | |
3904 | ||
3905 | bus->sdiodev = sdiodev; | |
3906 | sdiodev->bus = bus; | |
b83db862 | 3907 | skb_queue_head_init(&bus->glom); |
5b435de0 AS |
3908 | bus->txbound = BRCMF_TXBOUND; |
3909 | bus->rxbound = BRCMF_RXBOUND; | |
3910 | bus->txminmax = BRCMF_TXMINMAX; | |
3911 | bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1; | |
5b435de0 AS |
3912 | |
3913 | /* attempt to attach to the dongle */ | |
3914 | if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) { | |
3915 | brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_attach failed\n"); | |
3916 | goto fail; | |
3917 | } | |
3918 | ||
dd43a01c | 3919 | spin_lock_init(&bus->rxctl_lock); |
5b435de0 AS |
3920 | spin_lock_init(&bus->txqlock); |
3921 | init_waitqueue_head(&bus->ctrl_wait); | |
3922 | init_waitqueue_head(&bus->dcmd_resp_wait); | |
3923 | ||
f1e68c2e FL |
3924 | bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq"); |
3925 | if (bus->brcmf_wq == NULL) { | |
3926 | brcmf_dbg(ERROR, "insufficient memory to create txworkqueue\n"); | |
3927 | goto fail; | |
3928 | } | |
3929 | INIT_WORK(&bus->datawork, brcmf_sdio_dataworker); | |
3930 | ||
5b435de0 AS |
3931 | /* Set up the watchdog timer */ |
3932 | init_timer(&bus->timer); | |
3933 | bus->timer.data = (unsigned long)bus; | |
3934 | bus->timer.function = brcmf_sdbrcm_watchdog; | |
3935 | ||
5b435de0 AS |
3936 | /* Initialize watchdog thread */ |
3937 | init_completion(&bus->watchdog_wait); | |
3938 | bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread, | |
3939 | bus, "brcmf_watchdog"); | |
3940 | if (IS_ERR(bus->watchdog_tsk)) { | |
02f77195 | 3941 | pr_warn("brcmf_watchdog thread failed to start\n"); |
5b435de0 AS |
3942 | bus->watchdog_tsk = NULL; |
3943 | } | |
3944 | /* Initialize DPC thread */ | |
b948a85c FL |
3945 | INIT_LIST_HEAD(&bus->dpc_tsklst); |
3946 | spin_lock_init(&bus->dpc_tl_lock); | |
5b435de0 | 3947 | |
a9ffda88 FL |
3948 | /* Assign bus interface call back */ |
3949 | bus->sdiodev->bus_if->brcmf_bus_stop = brcmf_sdbrcm_bus_stop; | |
99a0b8ff | 3950 | bus->sdiodev->bus_if->brcmf_bus_init = brcmf_sdbrcm_bus_init; |
b9692d17 | 3951 | bus->sdiodev->bus_if->brcmf_bus_txdata = brcmf_sdbrcm_bus_txdata; |
fcf094f4 FL |
3952 | bus->sdiodev->bus_if->brcmf_bus_txctl = brcmf_sdbrcm_bus_txctl; |
3953 | bus->sdiodev->bus_if->brcmf_bus_rxctl = brcmf_sdbrcm_bus_rxctl; | |
5b435de0 | 3954 | /* Attach to the brcmf/OS/network interface */ |
2447ffb0 | 3955 | ret = brcmf_attach(SDPCM_RESERVE, bus->sdiodev->dev); |
712ac5b3 | 3956 | if (ret != 0) { |
5b435de0 AS |
3957 | brcmf_dbg(ERROR, "brcmf_attach failed\n"); |
3958 | goto fail; | |
3959 | } | |
3960 | ||
3961 | /* Allocate buffers */ | |
3962 | if (!(brcmf_sdbrcm_probe_malloc(bus))) { | |
3963 | brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_malloc failed\n"); | |
3964 | goto fail; | |
3965 | } | |
3966 | ||
3967 | if (!(brcmf_sdbrcm_probe_init(bus))) { | |
3968 | brcmf_dbg(ERROR, "brcmf_sdbrcm_probe_init failed\n"); | |
3969 | goto fail; | |
3970 | } | |
3971 | ||
80969836 | 3972 | brcmf_sdio_debugfs_create(bus); |
5b435de0 AS |
3973 | brcmf_dbg(INFO, "completed!!\n"); |
3974 | ||
bbfd6a66 FL |
3975 | /* sdio bus core specific dcmd */ |
3976 | idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); | |
3977 | dlst = kzalloc(sizeof(struct brcmf_bus_dcmd), GFP_KERNEL); | |
c3d2bc35 FL |
3978 | if (dlst) { |
3979 | if (bus->ci->c_inf[idx].rev < 12) { | |
3980 | /* for sdio core rev < 12, disable txgloming */ | |
3981 | dngl_txglom = 0; | |
3982 | dlst->name = "bus:txglom"; | |
3983 | dlst->param = (char *)&dngl_txglom; | |
3984 | dlst->param_len = sizeof(u32); | |
3985 | } else { | |
3986 | /* otherwise, set txglomalign */ | |
3987 | dngl_txglomalign = bus->sdiodev->bus_if->align; | |
3988 | dlst->name = "bus:txglomalign"; | |
3989 | dlst->param = (char *)&dngl_txglomalign; | |
3990 | dlst->param_len = sizeof(u32); | |
3991 | } | |
bbfd6a66 FL |
3992 | list_add(&dlst->list, &bus->sdiodev->bus_if->dcmd_list); |
3993 | } | |
3994 | ||
5b435de0 | 3995 | /* if firmware path present try to download and bring up bus */ |
ed683c98 | 3996 | ret = brcmf_bus_start(bus->sdiodev->dev); |
5b435de0 AS |
3997 | if (ret != 0) { |
3998 | if (ret == -ENOLINK) { | |
3999 | brcmf_dbg(ERROR, "dongle is not responding\n"); | |
4000 | goto fail; | |
4001 | } | |
4002 | } | |
15d45b6f | 4003 | |
5b435de0 AS |
4004 | return bus; |
4005 | ||
4006 | fail: | |
4007 | brcmf_sdbrcm_release(bus); | |
4008 | return NULL; | |
4009 | } | |
4010 | ||
4011 | void brcmf_sdbrcm_disconnect(void *ptr) | |
4012 | { | |
e92eedf4 | 4013 | struct brcmf_sdio *bus = (struct brcmf_sdio *)ptr; |
5b435de0 AS |
4014 | |
4015 | brcmf_dbg(TRACE, "Enter\n"); | |
4016 | ||
4017 | if (bus) | |
4018 | brcmf_sdbrcm_release(bus); | |
4019 | ||
4020 | brcmf_dbg(TRACE, "Disconnected\n"); | |
4021 | } | |
4022 | ||
5b435de0 | 4023 | void |
e92eedf4 | 4024 | brcmf_sdbrcm_wd_timer(struct brcmf_sdio *bus, uint wdtick) |
5b435de0 | 4025 | { |
5b435de0 | 4026 | /* Totally stop the timer */ |
23677ce3 | 4027 | if (!wdtick && bus->wd_timer_valid) { |
5b435de0 AS |
4028 | del_timer_sync(&bus->timer); |
4029 | bus->wd_timer_valid = false; | |
4030 | bus->save_ms = wdtick; | |
4031 | return; | |
4032 | } | |
4033 | ||
ece960ea | 4034 | /* don't start the wd until fw is loaded */ |
712ac5b3 | 4035 | if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) |
ece960ea FL |
4036 | return; |
4037 | ||
5b435de0 AS |
4038 | if (wdtick) { |
4039 | if (bus->save_ms != BRCMF_WD_POLL_MS) { | |
23677ce3 | 4040 | if (bus->wd_timer_valid) |
5b435de0 AS |
4041 | /* Stop timer and restart at new value */ |
4042 | del_timer_sync(&bus->timer); | |
4043 | ||
4044 | /* Create timer again when watchdog period is | |
4045 | dynamically changed or in the first instance | |
4046 | */ | |
4047 | bus->timer.expires = | |
4048 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000; | |
4049 | add_timer(&bus->timer); | |
4050 | ||
4051 | } else { | |
4052 | /* Re arm the timer, at last watchdog period */ | |
4053 | mod_timer(&bus->timer, | |
4054 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000); | |
4055 | } | |
4056 | ||
4057 | bus->wd_timer_valid = true; | |
4058 | bus->save_ms = wdtick; | |
4059 | } | |
4060 | } |