Commit | Line | Data |
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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 | ||
17 | #include <linux/types.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/kthread.h> | |
20 | #include <linux/printk.h> | |
21 | #include <linux/pci_ids.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/sched.h> | |
25 | #include <linux/mmc/sdio.h> | |
26 | #include <linux/mmc/sdio_func.h> | |
27 | #include <linux/mmc/card.h> | |
28 | #include <linux/semaphore.h> | |
29 | #include <linux/firmware.h> | |
b7a57e76 | 30 | #include <linux/module.h> |
99ba15cd | 31 | #include <linux/bcma/bcma.h> |
4fc0d016 | 32 | #include <linux/debugfs.h> |
8dc01811 | 33 | #include <linux/vmalloc.h> |
668761ac | 34 | #include <linux/platform_data/brcmfmac-sdio.h> |
8da9d2c8 | 35 | #include <linux/moduleparam.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" |
40c1c249 | 99 | #include "tracepoint.h" |
5b435de0 AS |
100 | |
101 | #define TXQLEN 2048 /* bulk tx queue length */ | |
102 | #define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */ | |
103 | #define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */ | |
104 | #define PRIOMASK 7 | |
105 | ||
106 | #define TXRETRIES 2 /* # of retries for tx frames */ | |
107 | ||
108 | #define BRCMF_RXBOUND 50 /* Default for max rx frames in | |
109 | one scheduling */ | |
110 | ||
111 | #define BRCMF_TXBOUND 20 /* Default for max tx frames in | |
112 | one scheduling */ | |
113 | ||
8da9d2c8 FL |
114 | #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ |
115 | ||
5b435de0 AS |
116 | #define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */ |
117 | ||
118 | #define MEMBLOCK 2048 /* Block size used for downloading | |
119 | of dongle image */ | |
120 | #define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold | |
121 | biggest possible glom */ | |
122 | ||
123 | #define BRCMF_FIRSTREAD (1 << 6) | |
124 | ||
125 | ||
126 | /* SBSDIO_DEVICE_CTL */ | |
127 | ||
128 | /* 1: device will assert busy signal when receiving CMD53 */ | |
129 | #define SBSDIO_DEVCTL_SETBUSY 0x01 | |
130 | /* 1: assertion of sdio interrupt is synchronous to the sdio clock */ | |
131 | #define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02 | |
132 | /* 1: mask all interrupts to host except the chipActive (rev 8) */ | |
133 | #define SBSDIO_DEVCTL_CA_INT_ONLY 0x04 | |
134 | /* 1: isolate internal sdio signals, put external pads in tri-state; requires | |
135 | * sdio bus power cycle to clear (rev 9) */ | |
136 | #define SBSDIO_DEVCTL_PADS_ISO 0x08 | |
137 | /* Force SD->SB reset mapping (rev 11) */ | |
138 | #define SBSDIO_DEVCTL_SB_RST_CTL 0x30 | |
139 | /* Determined by CoreControl bit */ | |
140 | #define SBSDIO_DEVCTL_RST_CORECTL 0x00 | |
141 | /* Force backplane reset */ | |
142 | #define SBSDIO_DEVCTL_RST_BPRESET 0x10 | |
143 | /* Force no backplane reset */ | |
144 | #define SBSDIO_DEVCTL_RST_NOBPRESET 0x20 | |
145 | ||
5b435de0 AS |
146 | /* direct(mapped) cis space */ |
147 | ||
148 | /* MAPPED common CIS address */ | |
149 | #define SBSDIO_CIS_BASE_COMMON 0x1000 | |
150 | /* maximum bytes in one CIS */ | |
151 | #define SBSDIO_CIS_SIZE_LIMIT 0x200 | |
152 | /* cis offset addr is < 17 bits */ | |
153 | #define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF | |
154 | ||
155 | /* manfid tuple length, include tuple, link bytes */ | |
156 | #define SBSDIO_CIS_MANFID_TUPLE_LEN 6 | |
157 | ||
158 | /* intstatus */ | |
159 | #define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */ | |
160 | #define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */ | |
161 | #define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */ | |
162 | #define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */ | |
163 | #define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */ | |
164 | #define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */ | |
165 | #define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */ | |
166 | #define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */ | |
167 | #define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */ | |
168 | #define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */ | |
169 | #define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */ | |
170 | #define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */ | |
171 | #define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */ | |
172 | #define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */ | |
173 | #define I_PC (1 << 10) /* descriptor error */ | |
174 | #define I_PD (1 << 11) /* data error */ | |
175 | #define I_DE (1 << 12) /* Descriptor protocol Error */ | |
176 | #define I_RU (1 << 13) /* Receive descriptor Underflow */ | |
177 | #define I_RO (1 << 14) /* Receive fifo Overflow */ | |
178 | #define I_XU (1 << 15) /* Transmit fifo Underflow */ | |
179 | #define I_RI (1 << 16) /* Receive Interrupt */ | |
180 | #define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */ | |
181 | #define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */ | |
182 | #define I_XI (1 << 24) /* Transmit Interrupt */ | |
183 | #define I_RF_TERM (1 << 25) /* Read Frame Terminate */ | |
184 | #define I_WF_TERM (1 << 26) /* Write Frame Terminate */ | |
185 | #define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */ | |
186 | #define I_SBINT (1 << 28) /* sbintstatus Interrupt */ | |
187 | #define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */ | |
188 | #define I_SRESET (1 << 30) /* CCCR RES interrupt */ | |
189 | #define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */ | |
190 | #define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU) | |
191 | #define I_DMA (I_RI | I_XI | I_ERRORS) | |
192 | ||
193 | /* corecontrol */ | |
194 | #define CC_CISRDY (1 << 0) /* CIS Ready */ | |
195 | #define CC_BPRESEN (1 << 1) /* CCCR RES signal */ | |
196 | #define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */ | |
197 | #define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */ | |
198 | #define CC_XMTDATAAVAIL_MODE (1 << 4) | |
199 | #define CC_XMTDATAAVAIL_CTRL (1 << 5) | |
200 | ||
201 | /* SDA_FRAMECTRL */ | |
202 | #define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */ | |
203 | #define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */ | |
204 | #define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */ | |
205 | #define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */ | |
206 | ||
5b435de0 AS |
207 | /* |
208 | * Software allocation of To SB Mailbox resources | |
209 | */ | |
210 | ||
211 | /* tosbmailbox bits corresponding to intstatus bits */ | |
212 | #define SMB_NAK (1 << 0) /* Frame NAK */ | |
213 | #define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */ | |
214 | #define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */ | |
215 | #define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */ | |
216 | ||
217 | /* tosbmailboxdata */ | |
218 | #define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */ | |
219 | ||
220 | /* | |
221 | * Software allocation of To Host Mailbox resources | |
222 | */ | |
223 | ||
224 | /* intstatus bits */ | |
225 | #define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */ | |
226 | #define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */ | |
227 | #define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */ | |
228 | #define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */ | |
229 | ||
230 | /* tohostmailboxdata */ | |
231 | #define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */ | |
232 | #define HMB_DATA_DEVREADY 2 /* talk to host after enable */ | |
233 | #define HMB_DATA_FC 4 /* per prio flowcontrol update flag */ | |
234 | #define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */ | |
235 | ||
236 | #define HMB_DATA_FCDATA_MASK 0xff000000 | |
237 | #define HMB_DATA_FCDATA_SHIFT 24 | |
238 | ||
239 | #define HMB_DATA_VERSION_MASK 0x00ff0000 | |
240 | #define HMB_DATA_VERSION_SHIFT 16 | |
241 | ||
242 | /* | |
243 | * Software-defined protocol header | |
244 | */ | |
245 | ||
246 | /* Current protocol version */ | |
247 | #define SDPCM_PROT_VERSION 4 | |
248 | ||
5b435de0 AS |
249 | /* |
250 | * Shared structure between dongle and the host. | |
251 | * The structure contains pointers to trap or assert information. | |
252 | */ | |
4fc0d016 | 253 | #define SDPCM_SHARED_VERSION 0x0003 |
5b435de0 AS |
254 | #define SDPCM_SHARED_VERSION_MASK 0x00FF |
255 | #define SDPCM_SHARED_ASSERT_BUILT 0x0100 | |
256 | #define SDPCM_SHARED_ASSERT 0x0200 | |
257 | #define SDPCM_SHARED_TRAP 0x0400 | |
258 | ||
259 | /* Space for header read, limit for data packets */ | |
260 | #define MAX_HDR_READ (1 << 6) | |
261 | #define MAX_RX_DATASZ 2048 | |
262 | ||
5b435de0 AS |
263 | /* Bump up limit on waiting for HT to account for first startup; |
264 | * if the image is doing a CRC calculation before programming the PMU | |
265 | * for HT availability, it could take a couple hundred ms more, so | |
266 | * max out at a 1 second (1000000us). | |
267 | */ | |
268 | #undef PMU_MAX_TRANSITION_DLY | |
269 | #define PMU_MAX_TRANSITION_DLY 1000000 | |
270 | ||
271 | /* Value for ChipClockCSR during initial setup */ | |
272 | #define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \ | |
273 | SBSDIO_ALP_AVAIL_REQ) | |
274 | ||
275 | /* Flags for SDH calls */ | |
276 | #define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED) | |
277 | ||
382a9e0f FL |
278 | #define BRCMF_IDLE_IMMEDIATE (-1) /* Enter idle immediately */ |
279 | #define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change | |
280 | * when idle | |
281 | */ | |
282 | #define BRCMF_IDLE_INTERVAL 1 | |
283 | ||
4a3da990 PH |
284 | #define KSO_WAIT_US 50 |
285 | #define MAX_KSO_ATTEMPTS (PMU_MAX_TRANSITION_DLY/KSO_WAIT_US) | |
286 | ||
5b435de0 AS |
287 | /* |
288 | * Conversion of 802.1D priority to precedence level | |
289 | */ | |
290 | static uint prio2prec(u32 prio) | |
291 | { | |
292 | return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ? | |
293 | (prio^2) : prio; | |
294 | } | |
295 | ||
8ae74654 | 296 | #ifdef DEBUG |
5b435de0 AS |
297 | /* Device console log buffer state */ |
298 | struct brcmf_console { | |
299 | uint count; /* Poll interval msec counter */ | |
300 | uint log_addr; /* Log struct address (fixed) */ | |
301 | struct rte_log_le log_le; /* Log struct (host copy) */ | |
302 | uint bufsize; /* Size of log buffer */ | |
303 | u8 *buf; /* Log buffer (host copy) */ | |
304 | uint last; /* Last buffer read index */ | |
305 | }; | |
4fc0d016 AS |
306 | |
307 | struct brcmf_trap_info { | |
308 | __le32 type; | |
309 | __le32 epc; | |
310 | __le32 cpsr; | |
311 | __le32 spsr; | |
312 | __le32 r0; /* a1 */ | |
313 | __le32 r1; /* a2 */ | |
314 | __le32 r2; /* a3 */ | |
315 | __le32 r3; /* a4 */ | |
316 | __le32 r4; /* v1 */ | |
317 | __le32 r5; /* v2 */ | |
318 | __le32 r6; /* v3 */ | |
319 | __le32 r7; /* v4 */ | |
320 | __le32 r8; /* v5 */ | |
321 | __le32 r9; /* sb/v6 */ | |
322 | __le32 r10; /* sl/v7 */ | |
323 | __le32 r11; /* fp/v8 */ | |
324 | __le32 r12; /* ip */ | |
325 | __le32 r13; /* sp */ | |
326 | __le32 r14; /* lr */ | |
327 | __le32 pc; /* r15 */ | |
328 | }; | |
8ae74654 | 329 | #endif /* DEBUG */ |
5b435de0 AS |
330 | |
331 | struct sdpcm_shared { | |
332 | u32 flags; | |
333 | u32 trap_addr; | |
334 | u32 assert_exp_addr; | |
335 | u32 assert_file_addr; | |
336 | u32 assert_line; | |
337 | u32 console_addr; /* Address of struct rte_console */ | |
338 | u32 msgtrace_addr; | |
339 | u8 tag[32]; | |
4fc0d016 | 340 | u32 brpt_addr; |
5b435de0 AS |
341 | }; |
342 | ||
343 | struct sdpcm_shared_le { | |
344 | __le32 flags; | |
345 | __le32 trap_addr; | |
346 | __le32 assert_exp_addr; | |
347 | __le32 assert_file_addr; | |
348 | __le32 assert_line; | |
349 | __le32 console_addr; /* Address of struct rte_console */ | |
350 | __le32 msgtrace_addr; | |
351 | u8 tag[32]; | |
4fc0d016 | 352 | __le32 brpt_addr; |
5b435de0 AS |
353 | }; |
354 | ||
6bc52319 FL |
355 | /* dongle SDIO bus specific header info */ |
356 | struct brcmf_sdio_hdrinfo { | |
4754fcee FL |
357 | u8 seq_num; |
358 | u8 channel; | |
359 | u16 len; | |
360 | u16 len_left; | |
361 | u16 len_nxtfrm; | |
362 | u8 dat_offset; | |
8da9d2c8 FL |
363 | bool lastfrm; |
364 | u16 tail_pad; | |
4754fcee | 365 | }; |
5b435de0 AS |
366 | |
367 | /* misc chip info needed by some of the routines */ | |
5b435de0 | 368 | /* Private data for SDIO bus interaction */ |
e92eedf4 | 369 | struct brcmf_sdio { |
5b435de0 AS |
370 | struct brcmf_sdio_dev *sdiodev; /* sdio device handler */ |
371 | struct chip_info *ci; /* Chip info struct */ | |
372 | char *vars; /* Variables (from CIS and/or other) */ | |
373 | uint varsz; /* Size of variables buffer */ | |
374 | ||
375 | u32 ramsize; /* Size of RAM in SOCRAM (bytes) */ | |
376 | ||
377 | u32 hostintmask; /* Copy of Host Interrupt Mask */ | |
4531603a FL |
378 | atomic_t intstatus; /* Intstatus bits (events) pending */ |
379 | atomic_t fcstate; /* State of dongle flow-control */ | |
5b435de0 AS |
380 | |
381 | uint blocksize; /* Block size of SDIO transfers */ | |
382 | uint roundup; /* Max roundup limit */ | |
383 | ||
384 | struct pktq txq; /* Queue length used for flow-control */ | |
385 | u8 flowcontrol; /* per prio flow control bitmask */ | |
386 | u8 tx_seq; /* Transmit sequence number (next) */ | |
387 | u8 tx_max; /* Maximum transmit sequence allowed */ | |
388 | ||
9b2d2f2a | 389 | u8 *hdrbuf; /* buffer for handling rx frame */ |
5b435de0 | 390 | u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */ |
5b435de0 | 391 | u8 rx_seq; /* Receive sequence number (expected) */ |
6bc52319 | 392 | struct brcmf_sdio_hdrinfo cur_read; |
4754fcee | 393 | /* info of current read frame */ |
5b435de0 | 394 | bool rxskip; /* Skip receive (awaiting NAK ACK) */ |
4754fcee | 395 | bool rxpending; /* Data frame pending in dongle */ |
5b435de0 AS |
396 | |
397 | uint rxbound; /* Rx frames to read before resched */ | |
398 | uint txbound; /* Tx frames to send before resched */ | |
399 | uint txminmax; | |
400 | ||
401 | struct sk_buff *glomd; /* Packet containing glomming descriptor */ | |
b83db862 | 402 | struct sk_buff_head glom; /* Packet list for glommed superframe */ |
5b435de0 AS |
403 | uint glomerr; /* Glom packet read errors */ |
404 | ||
405 | u8 *rxbuf; /* Buffer for receiving control packets */ | |
406 | uint rxblen; /* Allocated length of rxbuf */ | |
407 | u8 *rxctl; /* Aligned pointer into rxbuf */ | |
dd43a01c | 408 | u8 *rxctl_orig; /* pointer for freeing rxctl */ |
5b435de0 | 409 | uint rxlen; /* Length of valid data in buffer */ |
dd43a01c | 410 | spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */ |
5b435de0 AS |
411 | |
412 | u8 sdpcm_ver; /* Bus protocol reported by dongle */ | |
413 | ||
414 | bool intr; /* Use interrupts */ | |
415 | bool poll; /* Use polling */ | |
1d382273 | 416 | atomic_t ipend; /* Device interrupt is pending */ |
5b435de0 AS |
417 | uint spurious; /* Count of spurious interrupts */ |
418 | uint pollrate; /* Ticks between device polls */ | |
419 | uint polltick; /* Tick counter */ | |
5b435de0 | 420 | |
8ae74654 | 421 | #ifdef DEBUG |
5b435de0 AS |
422 | uint console_interval; |
423 | struct brcmf_console console; /* Console output polling support */ | |
424 | uint console_addr; /* Console address from shared struct */ | |
8ae74654 | 425 | #endif /* DEBUG */ |
5b435de0 | 426 | |
5b435de0 AS |
427 | uint clkstate; /* State of sd and backplane clock(s) */ |
428 | bool activity; /* Activity flag for clock down */ | |
429 | s32 idletime; /* Control for activity timeout */ | |
430 | s32 idlecount; /* Activity timeout counter */ | |
431 | s32 idleclock; /* How to set bus driver when idle */ | |
5b435de0 AS |
432 | bool rxflow_mode; /* Rx flow control mode */ |
433 | bool rxflow; /* Is rx flow control on */ | |
434 | bool alp_only; /* Don't use HT clock (ALP only) */ | |
5b435de0 | 435 | |
5b435de0 AS |
436 | u8 *ctrl_frame_buf; |
437 | u32 ctrl_frame_len; | |
438 | bool ctrl_frame_stat; | |
439 | ||
440 | spinlock_t txqlock; | |
441 | wait_queue_head_t ctrl_wait; | |
442 | wait_queue_head_t dcmd_resp_wait; | |
443 | ||
444 | struct timer_list timer; | |
445 | struct completion watchdog_wait; | |
446 | struct task_struct *watchdog_tsk; | |
447 | bool wd_timer_valid; | |
448 | uint save_ms; | |
449 | ||
f1e68c2e FL |
450 | struct workqueue_struct *brcmf_wq; |
451 | struct work_struct datawork; | |
fccfe930 | 452 | atomic_t dpc_tskcnt; |
5b435de0 | 453 | |
c8bf3484 | 454 | bool txoff; /* Transmit flow-controlled */ |
80969836 | 455 | struct brcmf_sdio_count sdcnt; |
4a3da990 PH |
456 | bool sr_enabled; /* SaveRestore enabled */ |
457 | bool sleeping; /* SDIO bus sleeping */ | |
706478cb FL |
458 | |
459 | u8 tx_hdrlen; /* sdio bus header length for tx packet */ | |
8da9d2c8 FL |
460 | bool txglom; /* host tx glomming enable flag */ |
461 | struct sk_buff *txglom_sgpad; /* scatter-gather padding buffer */ | |
e217d1c8 AS |
462 | u16 head_align; /* buffer pointer alignment */ |
463 | u16 sgentry_align; /* scatter-gather buffer alignment */ | |
5b435de0 AS |
464 | }; |
465 | ||
5b435de0 AS |
466 | /* clkstate */ |
467 | #define CLK_NONE 0 | |
468 | #define CLK_SDONLY 1 | |
4a3da990 | 469 | #define CLK_PENDING 2 |
5b435de0 AS |
470 | #define CLK_AVAIL 3 |
471 | ||
8ae74654 | 472 | #ifdef DEBUG |
5b435de0 | 473 | static int qcount[NUMPRIO]; |
8ae74654 | 474 | #endif /* DEBUG */ |
5b435de0 | 475 | |
668761ac | 476 | #define DEFAULT_SDIO_DRIVE_STRENGTH 6 /* in milliamps */ |
5b435de0 AS |
477 | |
478 | #define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL) | |
479 | ||
480 | /* Retry count for register access failures */ | |
481 | static const uint retry_limit = 2; | |
482 | ||
483 | /* Limit on rounding up frames */ | |
484 | static const uint max_roundup = 512; | |
485 | ||
486 | #define ALIGNMENT 4 | |
487 | ||
8da9d2c8 FL |
488 | static int brcmf_sdio_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; |
489 | module_param_named(txglomsz, brcmf_sdio_txglomsz, int, 0); | |
490 | MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]"); | |
491 | ||
9d7d6f95 FL |
492 | enum brcmf_sdio_frmtype { |
493 | BRCMF_SDIO_FT_NORMAL, | |
494 | BRCMF_SDIO_FT_SUPER, | |
495 | BRCMF_SDIO_FT_SUB, | |
496 | }; | |
497 | ||
f2c44fe7 HM |
498 | #define BCM43143_FIRMWARE_NAME "brcm/brcmfmac43143-sdio.bin" |
499 | #define BCM43143_NVRAM_NAME "brcm/brcmfmac43143-sdio.txt" | |
500 | #define BCM43241B0_FIRMWARE_NAME "brcm/brcmfmac43241b0-sdio.bin" | |
501 | #define BCM43241B0_NVRAM_NAME "brcm/brcmfmac43241b0-sdio.txt" | |
502 | #define BCM43241B4_FIRMWARE_NAME "brcm/brcmfmac43241b4-sdio.bin" | |
503 | #define BCM43241B4_NVRAM_NAME "brcm/brcmfmac43241b4-sdio.txt" | |
504 | #define BCM4329_FIRMWARE_NAME "brcm/brcmfmac4329-sdio.bin" | |
505 | #define BCM4329_NVRAM_NAME "brcm/brcmfmac4329-sdio.txt" | |
506 | #define BCM4330_FIRMWARE_NAME "brcm/brcmfmac4330-sdio.bin" | |
507 | #define BCM4330_NVRAM_NAME "brcm/brcmfmac4330-sdio.txt" | |
508 | #define BCM4334_FIRMWARE_NAME "brcm/brcmfmac4334-sdio.bin" | |
509 | #define BCM4334_NVRAM_NAME "brcm/brcmfmac4334-sdio.txt" | |
510 | #define BCM4335_FIRMWARE_NAME "brcm/brcmfmac4335-sdio.bin" | |
511 | #define BCM4335_NVRAM_NAME "brcm/brcmfmac4335-sdio.txt" | |
bed89b64 FL |
512 | #define BCM4339_FIRMWARE_NAME "brcm/brcmfmac4339-sdio.bin" |
513 | #define BCM4339_NVRAM_NAME "brcm/brcmfmac4339-sdio.txt" | |
f2c44fe7 HM |
514 | |
515 | MODULE_FIRMWARE(BCM43143_FIRMWARE_NAME); | |
516 | MODULE_FIRMWARE(BCM43143_NVRAM_NAME); | |
517 | MODULE_FIRMWARE(BCM43241B0_FIRMWARE_NAME); | |
518 | MODULE_FIRMWARE(BCM43241B0_NVRAM_NAME); | |
519 | MODULE_FIRMWARE(BCM43241B4_FIRMWARE_NAME); | |
520 | MODULE_FIRMWARE(BCM43241B4_NVRAM_NAME); | |
521 | MODULE_FIRMWARE(BCM4329_FIRMWARE_NAME); | |
522 | MODULE_FIRMWARE(BCM4329_NVRAM_NAME); | |
523 | MODULE_FIRMWARE(BCM4330_FIRMWARE_NAME); | |
524 | MODULE_FIRMWARE(BCM4330_NVRAM_NAME); | |
525 | MODULE_FIRMWARE(BCM4334_FIRMWARE_NAME); | |
526 | MODULE_FIRMWARE(BCM4334_NVRAM_NAME); | |
527 | MODULE_FIRMWARE(BCM4335_FIRMWARE_NAME); | |
528 | MODULE_FIRMWARE(BCM4335_NVRAM_NAME); | |
bed89b64 FL |
529 | MODULE_FIRMWARE(BCM4339_FIRMWARE_NAME); |
530 | MODULE_FIRMWARE(BCM4339_NVRAM_NAME); | |
f2c44fe7 HM |
531 | |
532 | struct brcmf_firmware_names { | |
533 | u32 chipid; | |
534 | u32 revmsk; | |
535 | const char *bin; | |
536 | const char *nv; | |
537 | }; | |
538 | ||
539 | enum brcmf_firmware_type { | |
540 | BRCMF_FIRMWARE_BIN, | |
541 | BRCMF_FIRMWARE_NVRAM | |
542 | }; | |
543 | ||
544 | #define BRCMF_FIRMWARE_NVRAM(name) \ | |
545 | name ## _FIRMWARE_NAME, name ## _NVRAM_NAME | |
546 | ||
547 | static const struct brcmf_firmware_names brcmf_fwname_data[] = { | |
548 | { BCM43143_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM43143) }, | |
549 | { BCM43241_CHIP_ID, 0x0000001F, BRCMF_FIRMWARE_NVRAM(BCM43241B0) }, | |
550 | { BCM43241_CHIP_ID, 0xFFFFFFE0, BRCMF_FIRMWARE_NVRAM(BCM43241B4) }, | |
551 | { BCM4329_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4329) }, | |
552 | { BCM4330_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4330) }, | |
553 | { BCM4334_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4334) }, | |
bed89b64 FL |
554 | { BCM4335_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4335) }, |
555 | { BCM4339_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4339) } | |
f2c44fe7 HM |
556 | }; |
557 | ||
558 | ||
82d7f3c1 | 559 | static const struct firmware *brcmf_sdio_get_fw(struct brcmf_sdio *bus, |
f2c44fe7 HM |
560 | enum brcmf_firmware_type type) |
561 | { | |
562 | const struct firmware *fw; | |
563 | const char *name; | |
564 | int err, i; | |
565 | ||
566 | for (i = 0; i < ARRAY_SIZE(brcmf_fwname_data); i++) { | |
567 | if (brcmf_fwname_data[i].chipid == bus->ci->chip && | |
568 | brcmf_fwname_data[i].revmsk & BIT(bus->ci->chiprev)) { | |
569 | switch (type) { | |
570 | case BRCMF_FIRMWARE_BIN: | |
571 | name = brcmf_fwname_data[i].bin; | |
572 | break; | |
573 | case BRCMF_FIRMWARE_NVRAM: | |
574 | name = brcmf_fwname_data[i].nv; | |
575 | break; | |
576 | default: | |
577 | brcmf_err("invalid firmware type (%d)\n", type); | |
578 | return NULL; | |
579 | } | |
580 | goto found; | |
581 | } | |
582 | } | |
583 | brcmf_err("Unknown chipid %d [%d]\n", | |
584 | bus->ci->chip, bus->ci->chiprev); | |
585 | return NULL; | |
586 | ||
587 | found: | |
588 | err = request_firmware(&fw, name, &bus->sdiodev->func[2]->dev); | |
589 | if ((err) || (!fw)) { | |
590 | brcmf_err("fail to request firmware %s (%d)\n", name, err); | |
591 | return NULL; | |
592 | } | |
593 | ||
594 | return fw; | |
595 | } | |
596 | ||
5b435de0 AS |
597 | static void pkt_align(struct sk_buff *p, int len, int align) |
598 | { | |
599 | uint datalign; | |
600 | datalign = (unsigned long)(p->data); | |
601 | datalign = roundup(datalign, (align)) - datalign; | |
602 | if (datalign) | |
603 | skb_pull(p, datalign); | |
604 | __skb_trim(p, len); | |
605 | } | |
606 | ||
607 | /* To check if there's window offered */ | |
e92eedf4 | 608 | static bool data_ok(struct brcmf_sdio *bus) |
5b435de0 AS |
609 | { |
610 | return (u8)(bus->tx_max - bus->tx_seq) != 0 && | |
611 | ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0; | |
612 | } | |
613 | ||
614 | /* | |
615 | * Reads a register in the SDIO hardware block. This block occupies a series of | |
616 | * adresses on the 32 bit backplane bus. | |
617 | */ | |
58692750 FL |
618 | static int |
619 | r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) | |
5b435de0 | 620 | { |
99ba15cd | 621 | u8 idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); |
79ae3957 | 622 | int ret; |
58692750 | 623 | |
a39be27b AS |
624 | *regvar = brcmf_sdiod_regrl(bus->sdiodev, |
625 | bus->ci->c_inf[idx].base + offset, &ret); | |
58692750 FL |
626 | |
627 | return ret; | |
5b435de0 AS |
628 | } |
629 | ||
58692750 FL |
630 | static int |
631 | w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset) | |
5b435de0 | 632 | { |
99ba15cd | 633 | u8 idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); |
e13ce26b | 634 | int ret; |
58692750 | 635 | |
a39be27b AS |
636 | brcmf_sdiod_regwl(bus->sdiodev, |
637 | bus->ci->c_inf[idx].base + reg_offset, | |
638 | regval, &ret); | |
58692750 FL |
639 | |
640 | return ret; | |
5b435de0 AS |
641 | } |
642 | ||
4a3da990 | 643 | static int |
82d7f3c1 | 644 | brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on) |
4a3da990 PH |
645 | { |
646 | u8 wr_val = 0, rd_val, cmp_val, bmask; | |
647 | int err = 0; | |
648 | int try_cnt = 0; | |
649 | ||
650 | brcmf_dbg(TRACE, "Enter\n"); | |
651 | ||
652 | wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT); | |
653 | /* 1st KSO write goes to AOS wake up core if device is asleep */ | |
a39be27b AS |
654 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
655 | wr_val, &err); | |
4a3da990 PH |
656 | if (err) { |
657 | brcmf_err("SDIO_AOS KSO write error: %d\n", err); | |
658 | return err; | |
659 | } | |
660 | ||
661 | if (on) { | |
662 | /* device WAKEUP through KSO: | |
663 | * write bit 0 & read back until | |
664 | * both bits 0 (kso bit) & 1 (dev on status) are set | |
665 | */ | |
666 | cmp_val = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK | | |
667 | SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK; | |
668 | bmask = cmp_val; | |
669 | usleep_range(2000, 3000); | |
670 | } else { | |
671 | /* Put device to sleep, turn off KSO */ | |
672 | cmp_val = 0; | |
673 | /* only check for bit0, bit1(dev on status) may not | |
674 | * get cleared right away | |
675 | */ | |
676 | bmask = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK; | |
677 | } | |
678 | ||
679 | do { | |
680 | /* reliable KSO bit set/clr: | |
681 | * the sdiod sleep write access is synced to PMU 32khz clk | |
682 | * just one write attempt may fail, | |
683 | * read it back until it matches written value | |
684 | */ | |
a39be27b AS |
685 | rd_val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
686 | &err); | |
4a3da990 PH |
687 | if (((rd_val & bmask) == cmp_val) && !err) |
688 | break; | |
689 | brcmf_dbg(SDIO, "KSO wr/rd retry:%d (max: %d) ERR:%x\n", | |
690 | try_cnt, MAX_KSO_ATTEMPTS, err); | |
691 | udelay(KSO_WAIT_US); | |
a39be27b AS |
692 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
693 | wr_val, &err); | |
4a3da990 PH |
694 | } while (try_cnt++ < MAX_KSO_ATTEMPTS); |
695 | ||
696 | return err; | |
697 | } | |
698 | ||
5b435de0 AS |
699 | #define PKT_AVAILABLE() (intstatus & I_HMB_FRAME_IND) |
700 | ||
701 | #define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) | |
702 | ||
5b435de0 | 703 | /* Turn backplane clock on or off */ |
82d7f3c1 | 704 | static int brcmf_sdio_htclk(struct brcmf_sdio *bus, bool on, bool pendok) |
5b435de0 AS |
705 | { |
706 | int err; | |
707 | u8 clkctl, clkreq, devctl; | |
708 | unsigned long timeout; | |
709 | ||
c3203374 | 710 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
711 | |
712 | clkctl = 0; | |
713 | ||
4a3da990 PH |
714 | if (bus->sr_enabled) { |
715 | bus->clkstate = (on ? CLK_AVAIL : CLK_SDONLY); | |
716 | return 0; | |
717 | } | |
718 | ||
5b435de0 AS |
719 | if (on) { |
720 | /* Request HT Avail */ | |
721 | clkreq = | |
722 | bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ; | |
723 | ||
a39be27b AS |
724 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
725 | clkreq, &err); | |
5b435de0 | 726 | if (err) { |
5e8149f5 | 727 | brcmf_err("HT Avail request error: %d\n", err); |
5b435de0 AS |
728 | return -EBADE; |
729 | } | |
730 | ||
5b435de0 | 731 | /* Check current status */ |
a39be27b AS |
732 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
733 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 734 | if (err) { |
5e8149f5 | 735 | brcmf_err("HT Avail read error: %d\n", err); |
5b435de0 AS |
736 | return -EBADE; |
737 | } | |
738 | ||
739 | /* Go to pending and await interrupt if appropriate */ | |
740 | if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) { | |
741 | /* Allow only clock-available interrupt */ | |
a39be27b AS |
742 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
743 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 744 | if (err) { |
5e8149f5 | 745 | brcmf_err("Devctl error setting CA: %d\n", |
5b435de0 AS |
746 | err); |
747 | return -EBADE; | |
748 | } | |
749 | ||
750 | devctl |= SBSDIO_DEVCTL_CA_INT_ONLY; | |
a39be27b AS |
751 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
752 | devctl, &err); | |
c3203374 | 753 | brcmf_dbg(SDIO, "CLKCTL: set PENDING\n"); |
5b435de0 AS |
754 | bus->clkstate = CLK_PENDING; |
755 | ||
756 | return 0; | |
757 | } else if (bus->clkstate == CLK_PENDING) { | |
758 | /* Cancel CA-only interrupt filter */ | |
a39be27b AS |
759 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
760 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 761 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
a39be27b AS |
762 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
763 | devctl, &err); | |
5b435de0 AS |
764 | } |
765 | ||
766 | /* Otherwise, wait here (polling) for HT Avail */ | |
767 | timeout = jiffies + | |
768 | msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000); | |
769 | while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { | |
a39be27b AS |
770 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
771 | SBSDIO_FUNC1_CHIPCLKCSR, | |
772 | &err); | |
5b435de0 AS |
773 | if (time_after(jiffies, timeout)) |
774 | break; | |
775 | else | |
776 | usleep_range(5000, 10000); | |
777 | } | |
778 | if (err) { | |
5e8149f5 | 779 | brcmf_err("HT Avail request error: %d\n", err); |
5b435de0 AS |
780 | return -EBADE; |
781 | } | |
782 | if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { | |
5e8149f5 | 783 | brcmf_err("HT Avail timeout (%d): clkctl 0x%02x\n", |
5b435de0 AS |
784 | PMU_MAX_TRANSITION_DLY, clkctl); |
785 | return -EBADE; | |
786 | } | |
787 | ||
788 | /* Mark clock available */ | |
789 | bus->clkstate = CLK_AVAIL; | |
c3203374 | 790 | brcmf_dbg(SDIO, "CLKCTL: turned ON\n"); |
5b435de0 | 791 | |
8ae74654 | 792 | #if defined(DEBUG) |
23677ce3 | 793 | if (!bus->alp_only) { |
5b435de0 | 794 | if (SBSDIO_ALPONLY(clkctl)) |
5e8149f5 | 795 | brcmf_err("HT Clock should be on\n"); |
5b435de0 | 796 | } |
8ae74654 | 797 | #endif /* defined (DEBUG) */ |
5b435de0 AS |
798 | |
799 | bus->activity = true; | |
800 | } else { | |
801 | clkreq = 0; | |
802 | ||
803 | if (bus->clkstate == CLK_PENDING) { | |
804 | /* Cancel CA-only interrupt filter */ | |
a39be27b AS |
805 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
806 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 807 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
a39be27b AS |
808 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
809 | devctl, &err); | |
5b435de0 AS |
810 | } |
811 | ||
812 | bus->clkstate = CLK_SDONLY; | |
a39be27b AS |
813 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
814 | clkreq, &err); | |
c3203374 | 815 | brcmf_dbg(SDIO, "CLKCTL: turned OFF\n"); |
5b435de0 | 816 | if (err) { |
5e8149f5 | 817 | brcmf_err("Failed access turning clock off: %d\n", |
5b435de0 AS |
818 | err); |
819 | return -EBADE; | |
820 | } | |
821 | } | |
822 | return 0; | |
823 | } | |
824 | ||
825 | /* Change idle/active SD state */ | |
82d7f3c1 | 826 | static int brcmf_sdio_sdclk(struct brcmf_sdio *bus, bool on) |
5b435de0 | 827 | { |
c3203374 | 828 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
829 | |
830 | if (on) | |
831 | bus->clkstate = CLK_SDONLY; | |
832 | else | |
833 | bus->clkstate = CLK_NONE; | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | /* Transition SD and backplane clock readiness */ | |
82d7f3c1 | 839 | static int brcmf_sdio_clkctl(struct brcmf_sdio *bus, uint target, bool pendok) |
5b435de0 | 840 | { |
8ae74654 | 841 | #ifdef DEBUG |
5b435de0 | 842 | uint oldstate = bus->clkstate; |
8ae74654 | 843 | #endif /* DEBUG */ |
5b435de0 | 844 | |
c3203374 | 845 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
846 | |
847 | /* Early exit if we're already there */ | |
848 | if (bus->clkstate == target) { | |
849 | if (target == CLK_AVAIL) { | |
82d7f3c1 | 850 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 AS |
851 | bus->activity = true; |
852 | } | |
853 | return 0; | |
854 | } | |
855 | ||
856 | switch (target) { | |
857 | case CLK_AVAIL: | |
858 | /* Make sure SD clock is available */ | |
859 | if (bus->clkstate == CLK_NONE) | |
82d7f3c1 | 860 | brcmf_sdio_sdclk(bus, true); |
5b435de0 | 861 | /* Now request HT Avail on the backplane */ |
82d7f3c1 AS |
862 | brcmf_sdio_htclk(bus, true, pendok); |
863 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); | |
5b435de0 AS |
864 | bus->activity = true; |
865 | break; | |
866 | ||
867 | case CLK_SDONLY: | |
868 | /* Remove HT request, or bring up SD clock */ | |
869 | if (bus->clkstate == CLK_NONE) | |
82d7f3c1 | 870 | brcmf_sdio_sdclk(bus, true); |
5b435de0 | 871 | else if (bus->clkstate == CLK_AVAIL) |
82d7f3c1 | 872 | brcmf_sdio_htclk(bus, false, false); |
5b435de0 | 873 | else |
5e8149f5 | 874 | brcmf_err("request for %d -> %d\n", |
5b435de0 | 875 | bus->clkstate, target); |
82d7f3c1 | 876 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 AS |
877 | break; |
878 | ||
879 | case CLK_NONE: | |
880 | /* Make sure to remove HT request */ | |
881 | if (bus->clkstate == CLK_AVAIL) | |
82d7f3c1 | 882 | brcmf_sdio_htclk(bus, false, false); |
5b435de0 | 883 | /* Now remove the SD clock */ |
82d7f3c1 AS |
884 | brcmf_sdio_sdclk(bus, false); |
885 | brcmf_sdio_wd_timer(bus, 0); | |
5b435de0 AS |
886 | break; |
887 | } | |
8ae74654 | 888 | #ifdef DEBUG |
c3203374 | 889 | brcmf_dbg(SDIO, "%d -> %d\n", oldstate, bus->clkstate); |
8ae74654 | 890 | #endif /* DEBUG */ |
5b435de0 AS |
891 | |
892 | return 0; | |
893 | } | |
894 | ||
4a3da990 | 895 | static int |
82d7f3c1 | 896 | brcmf_sdio_bus_sleep(struct brcmf_sdio *bus, bool sleep, bool pendok) |
4a3da990 PH |
897 | { |
898 | int err = 0; | |
899 | brcmf_dbg(TRACE, "Enter\n"); | |
900 | brcmf_dbg(SDIO, "request %s currently %s\n", | |
901 | (sleep ? "SLEEP" : "WAKE"), | |
902 | (bus->sleeping ? "SLEEP" : "WAKE")); | |
903 | ||
904 | /* If SR is enabled control bus state with KSO */ | |
905 | if (bus->sr_enabled) { | |
906 | /* Done if we're already in the requested state */ | |
907 | if (sleep == bus->sleeping) | |
908 | goto end; | |
909 | ||
910 | /* Going to sleep */ | |
911 | if (sleep) { | |
912 | /* Don't sleep if something is pending */ | |
913 | if (atomic_read(&bus->intstatus) || | |
914 | atomic_read(&bus->ipend) > 0 || | |
915 | (!atomic_read(&bus->fcstate) && | |
916 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && | |
917 | data_ok(bus))) | |
918 | return -EBUSY; | |
82d7f3c1 | 919 | err = brcmf_sdio_kso_control(bus, false); |
4a3da990 PH |
920 | /* disable watchdog */ |
921 | if (!err) | |
82d7f3c1 | 922 | brcmf_sdio_wd_timer(bus, 0); |
4a3da990 PH |
923 | } else { |
924 | bus->idlecount = 0; | |
82d7f3c1 | 925 | err = brcmf_sdio_kso_control(bus, true); |
4a3da990 PH |
926 | } |
927 | if (!err) { | |
928 | /* Change state */ | |
929 | bus->sleeping = sleep; | |
930 | brcmf_dbg(SDIO, "new state %s\n", | |
931 | (sleep ? "SLEEP" : "WAKE")); | |
932 | } else { | |
933 | brcmf_err("error while changing bus sleep state %d\n", | |
934 | err); | |
935 | return err; | |
936 | } | |
937 | } | |
938 | ||
939 | end: | |
940 | /* control clocks */ | |
941 | if (sleep) { | |
942 | if (!bus->sr_enabled) | |
82d7f3c1 | 943 | brcmf_sdio_clkctl(bus, CLK_NONE, pendok); |
4a3da990 | 944 | } else { |
82d7f3c1 | 945 | brcmf_sdio_clkctl(bus, CLK_AVAIL, pendok); |
4a3da990 PH |
946 | } |
947 | ||
948 | return err; | |
949 | ||
950 | } | |
951 | ||
82d7f3c1 | 952 | static u32 brcmf_sdio_hostmail(struct brcmf_sdio *bus) |
5b435de0 AS |
953 | { |
954 | u32 intstatus = 0; | |
955 | u32 hmb_data; | |
956 | u8 fcbits; | |
58692750 | 957 | int ret; |
5b435de0 | 958 | |
c3203374 | 959 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
960 | |
961 | /* Read mailbox data and ack that we did so */ | |
58692750 FL |
962 | ret = r_sdreg32(bus, &hmb_data, |
963 | offsetof(struct sdpcmd_regs, tohostmailboxdata)); | |
5b435de0 | 964 | |
58692750 | 965 | if (ret == 0) |
5b435de0 | 966 | w_sdreg32(bus, SMB_INT_ACK, |
58692750 | 967 | offsetof(struct sdpcmd_regs, tosbmailbox)); |
80969836 | 968 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
969 | |
970 | /* Dongle recomposed rx frames, accept them again */ | |
971 | if (hmb_data & HMB_DATA_NAKHANDLED) { | |
c3203374 | 972 | brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n", |
5b435de0 AS |
973 | bus->rx_seq); |
974 | if (!bus->rxskip) | |
5e8149f5 | 975 | brcmf_err("unexpected NAKHANDLED!\n"); |
5b435de0 AS |
976 | |
977 | bus->rxskip = false; | |
978 | intstatus |= I_HMB_FRAME_IND; | |
979 | } | |
980 | ||
981 | /* | |
982 | * DEVREADY does not occur with gSPI. | |
983 | */ | |
984 | if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { | |
985 | bus->sdpcm_ver = | |
986 | (hmb_data & HMB_DATA_VERSION_MASK) >> | |
987 | HMB_DATA_VERSION_SHIFT; | |
988 | if (bus->sdpcm_ver != SDPCM_PROT_VERSION) | |
5e8149f5 | 989 | brcmf_err("Version mismatch, dongle reports %d, " |
5b435de0 AS |
990 | "expecting %d\n", |
991 | bus->sdpcm_ver, SDPCM_PROT_VERSION); | |
992 | else | |
c3203374 | 993 | brcmf_dbg(SDIO, "Dongle ready, protocol version %d\n", |
5b435de0 AS |
994 | bus->sdpcm_ver); |
995 | } | |
996 | ||
997 | /* | |
998 | * Flow Control has been moved into the RX headers and this out of band | |
999 | * method isn't used any more. | |
1000 | * remaining backward compatible with older dongles. | |
1001 | */ | |
1002 | if (hmb_data & HMB_DATA_FC) { | |
1003 | fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> | |
1004 | HMB_DATA_FCDATA_SHIFT; | |
1005 | ||
1006 | if (fcbits & ~bus->flowcontrol) | |
80969836 | 1007 | bus->sdcnt.fc_xoff++; |
5b435de0 AS |
1008 | |
1009 | if (bus->flowcontrol & ~fcbits) | |
80969836 | 1010 | bus->sdcnt.fc_xon++; |
5b435de0 | 1011 | |
80969836 | 1012 | bus->sdcnt.fc_rcvd++; |
5b435de0 AS |
1013 | bus->flowcontrol = fcbits; |
1014 | } | |
1015 | ||
1016 | /* Shouldn't be any others */ | |
1017 | if (hmb_data & ~(HMB_DATA_DEVREADY | | |
1018 | HMB_DATA_NAKHANDLED | | |
1019 | HMB_DATA_FC | | |
1020 | HMB_DATA_FWREADY | | |
1021 | HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) | |
5e8149f5 | 1022 | brcmf_err("Unknown mailbox data content: 0x%02x\n", |
5b435de0 AS |
1023 | hmb_data); |
1024 | ||
1025 | return intstatus; | |
1026 | } | |
1027 | ||
82d7f3c1 | 1028 | static void brcmf_sdio_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx) |
5b435de0 AS |
1029 | { |
1030 | uint retries = 0; | |
1031 | u16 lastrbc; | |
1032 | u8 hi, lo; | |
1033 | int err; | |
1034 | ||
5e8149f5 | 1035 | brcmf_err("%sterminate frame%s\n", |
5b435de0 AS |
1036 | abort ? "abort command, " : "", |
1037 | rtx ? ", send NAK" : ""); | |
1038 | ||
1039 | if (abort) | |
a39be27b | 1040 | brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2); |
5b435de0 | 1041 | |
a39be27b AS |
1042 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
1043 | SFC_RF_TERM, &err); | |
80969836 | 1044 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
1045 | |
1046 | /* Wait until the packet has been flushed (device/FIFO stable) */ | |
1047 | for (lastrbc = retries = 0xffff; retries > 0; retries--) { | |
a39be27b AS |
1048 | hi = brcmf_sdiod_regrb(bus->sdiodev, |
1049 | SBSDIO_FUNC1_RFRAMEBCHI, &err); | |
1050 | lo = brcmf_sdiod_regrb(bus->sdiodev, | |
1051 | SBSDIO_FUNC1_RFRAMEBCLO, &err); | |
80969836 | 1052 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
1053 | |
1054 | if ((hi == 0) && (lo == 0)) | |
1055 | break; | |
1056 | ||
1057 | if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) { | |
5e8149f5 | 1058 | brcmf_err("count growing: last 0x%04x now 0x%04x\n", |
5b435de0 AS |
1059 | lastrbc, (hi << 8) + lo); |
1060 | } | |
1061 | lastrbc = (hi << 8) + lo; | |
1062 | } | |
1063 | ||
1064 | if (!retries) | |
5e8149f5 | 1065 | brcmf_err("count never zeroed: last 0x%04x\n", lastrbc); |
5b435de0 | 1066 | else |
c3203374 | 1067 | brcmf_dbg(SDIO, "flush took %d iterations\n", 0xffff - retries); |
5b435de0 AS |
1068 | |
1069 | if (rtx) { | |
80969836 | 1070 | bus->sdcnt.rxrtx++; |
58692750 FL |
1071 | err = w_sdreg32(bus, SMB_NAK, |
1072 | offsetof(struct sdpcmd_regs, tosbmailbox)); | |
5b435de0 | 1073 | |
80969836 | 1074 | bus->sdcnt.f1regdata++; |
58692750 | 1075 | if (err == 0) |
5b435de0 AS |
1076 | bus->rxskip = true; |
1077 | } | |
1078 | ||
1079 | /* Clear partial in any case */ | |
4754fcee | 1080 | bus->cur_read.len = 0; |
5b435de0 AS |
1081 | |
1082 | /* If we can't reach the device, signal failure */ | |
5c15c23a | 1083 | if (err) |
712ac5b3 | 1084 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
1085 | } |
1086 | ||
9a95e60e | 1087 | /* return total length of buffer chain */ |
82d7f3c1 | 1088 | static uint brcmf_sdio_glom_len(struct brcmf_sdio *bus) |
9a95e60e AS |
1089 | { |
1090 | struct sk_buff *p; | |
1091 | uint total; | |
1092 | ||
1093 | total = 0; | |
1094 | skb_queue_walk(&bus->glom, p) | |
1095 | total += p->len; | |
1096 | return total; | |
1097 | } | |
1098 | ||
82d7f3c1 | 1099 | static void brcmf_sdio_free_glom(struct brcmf_sdio *bus) |
046808da AS |
1100 | { |
1101 | struct sk_buff *cur, *next; | |
1102 | ||
1103 | skb_queue_walk_safe(&bus->glom, cur, next) { | |
1104 | skb_unlink(cur, &bus->glom); | |
1105 | brcmu_pkt_buf_free_skb(cur); | |
1106 | } | |
1107 | } | |
1108 | ||
6bc52319 FL |
1109 | /** |
1110 | * brcmfmac sdio bus specific header | |
1111 | * This is the lowest layer header wrapped on the packets transmitted between | |
1112 | * host and WiFi dongle which contains information needed for SDIO core and | |
1113 | * firmware | |
1114 | * | |
8da9d2c8 FL |
1115 | * It consists of 3 parts: hardware header, hardware extension header and |
1116 | * software header | |
6bc52319 FL |
1117 | * hardware header (frame tag) - 4 bytes |
1118 | * Byte 0~1: Frame length | |
1119 | * Byte 2~3: Checksum, bit-wise inverse of frame length | |
8da9d2c8 FL |
1120 | * hardware extension header - 8 bytes |
1121 | * Tx glom mode only, N/A for Rx or normal Tx | |
1122 | * Byte 0~1: Packet length excluding hw frame tag | |
1123 | * Byte 2: Reserved | |
1124 | * Byte 3: Frame flags, bit 0: last frame indication | |
1125 | * Byte 4~5: Reserved | |
1126 | * Byte 6~7: Tail padding length | |
6bc52319 FL |
1127 | * software header - 8 bytes |
1128 | * Byte 0: Rx/Tx sequence number | |
1129 | * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag | |
1130 | * Byte 2: Length of next data frame, reserved for Tx | |
1131 | * Byte 3: Data offset | |
1132 | * Byte 4: Flow control bits, reserved for Tx | |
1133 | * Byte 5: Maximum Sequence number allowed by firmware for Tx, N/A for Tx packet | |
1134 | * Byte 6~7: Reserved | |
1135 | */ | |
1136 | #define SDPCM_HWHDR_LEN 4 | |
8da9d2c8 | 1137 | #define SDPCM_HWEXT_LEN 8 |
6bc52319 FL |
1138 | #define SDPCM_SWHDR_LEN 8 |
1139 | #define SDPCM_HDRLEN (SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN) | |
6bc52319 FL |
1140 | /* software header */ |
1141 | #define SDPCM_SEQ_MASK 0x000000ff | |
1142 | #define SDPCM_SEQ_WRAP 256 | |
1143 | #define SDPCM_CHANNEL_MASK 0x00000f00 | |
1144 | #define SDPCM_CHANNEL_SHIFT 8 | |
1145 | #define SDPCM_CONTROL_CHANNEL 0 /* Control */ | |
1146 | #define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication */ | |
1147 | #define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv */ | |
1148 | #define SDPCM_GLOM_CHANNEL 3 /* Coalesced packets */ | |
1149 | #define SDPCM_TEST_CHANNEL 15 /* Test/debug packets */ | |
1150 | #define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80) | |
1151 | #define SDPCM_NEXTLEN_MASK 0x00ff0000 | |
1152 | #define SDPCM_NEXTLEN_SHIFT 16 | |
1153 | #define SDPCM_DOFFSET_MASK 0xff000000 | |
1154 | #define SDPCM_DOFFSET_SHIFT 24 | |
1155 | #define SDPCM_FCMASK_MASK 0x000000ff | |
1156 | #define SDPCM_WINDOW_MASK 0x0000ff00 | |
1157 | #define SDPCM_WINDOW_SHIFT 8 | |
1158 | ||
1159 | static inline u8 brcmf_sdio_getdatoffset(u8 *swheader) | |
1160 | { | |
1161 | u32 hdrvalue; | |
1162 | hdrvalue = *(u32 *)swheader; | |
1163 | return (u8)((hdrvalue & SDPCM_DOFFSET_MASK) >> SDPCM_DOFFSET_SHIFT); | |
1164 | } | |
1165 | ||
1166 | static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header, | |
1167 | struct brcmf_sdio_hdrinfo *rd, | |
1168 | enum brcmf_sdio_frmtype type) | |
4754fcee FL |
1169 | { |
1170 | u16 len, checksum; | |
1171 | u8 rx_seq, fc, tx_seq_max; | |
6bc52319 | 1172 | u32 swheader; |
4754fcee | 1173 | |
4b776961 | 1174 | trace_brcmf_sdpcm_hdr(SDPCM_RX, header); |
76584ece | 1175 | |
6bc52319 | 1176 | /* hw header */ |
4754fcee FL |
1177 | len = get_unaligned_le16(header); |
1178 | checksum = get_unaligned_le16(header + sizeof(u16)); | |
1179 | /* All zero means no more to read */ | |
1180 | if (!(len | checksum)) { | |
1181 | bus->rxpending = false; | |
10510589 | 1182 | return -ENODATA; |
4754fcee FL |
1183 | } |
1184 | if ((u16)(~(len ^ checksum))) { | |
5e8149f5 | 1185 | brcmf_err("HW header checksum error\n"); |
4754fcee | 1186 | bus->sdcnt.rx_badhdr++; |
82d7f3c1 | 1187 | brcmf_sdio_rxfail(bus, false, false); |
10510589 | 1188 | return -EIO; |
4754fcee FL |
1189 | } |
1190 | if (len < SDPCM_HDRLEN) { | |
5e8149f5 | 1191 | brcmf_err("HW header length error\n"); |
10510589 | 1192 | return -EPROTO; |
4754fcee | 1193 | } |
9d7d6f95 FL |
1194 | if (type == BRCMF_SDIO_FT_SUPER && |
1195 | (roundup(len, bus->blocksize) != rd->len)) { | |
5e8149f5 | 1196 | brcmf_err("HW superframe header length error\n"); |
10510589 | 1197 | return -EPROTO; |
9d7d6f95 FL |
1198 | } |
1199 | if (type == BRCMF_SDIO_FT_SUB && len > rd->len) { | |
5e8149f5 | 1200 | brcmf_err("HW subframe header length error\n"); |
10510589 | 1201 | return -EPROTO; |
9d7d6f95 | 1202 | } |
4754fcee FL |
1203 | rd->len = len; |
1204 | ||
6bc52319 FL |
1205 | /* software header */ |
1206 | header += SDPCM_HWHDR_LEN; | |
1207 | swheader = le32_to_cpu(*(__le32 *)header); | |
1208 | if (type == BRCMF_SDIO_FT_SUPER && SDPCM_GLOMDESC(header)) { | |
5e8149f5 | 1209 | brcmf_err("Glom descriptor found in superframe head\n"); |
9d7d6f95 | 1210 | rd->len = 0; |
10510589 | 1211 | return -EINVAL; |
9d7d6f95 | 1212 | } |
6bc52319 FL |
1213 | rx_seq = (u8)(swheader & SDPCM_SEQ_MASK); |
1214 | rd->channel = (swheader & SDPCM_CHANNEL_MASK) >> SDPCM_CHANNEL_SHIFT; | |
9d7d6f95 FL |
1215 | if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL && |
1216 | type != BRCMF_SDIO_FT_SUPER) { | |
5e8149f5 | 1217 | brcmf_err("HW header length too long\n"); |
4754fcee | 1218 | bus->sdcnt.rx_toolong++; |
82d7f3c1 | 1219 | brcmf_sdio_rxfail(bus, false, false); |
4754fcee | 1220 | rd->len = 0; |
10510589 | 1221 | return -EPROTO; |
4754fcee | 1222 | } |
9d7d6f95 | 1223 | if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) { |
5e8149f5 | 1224 | brcmf_err("Wrong channel for superframe\n"); |
9d7d6f95 | 1225 | rd->len = 0; |
10510589 | 1226 | return -EINVAL; |
9d7d6f95 FL |
1227 | } |
1228 | if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL && | |
1229 | rd->channel != SDPCM_EVENT_CHANNEL) { | |
5e8149f5 | 1230 | brcmf_err("Wrong channel for subframe\n"); |
9d7d6f95 | 1231 | rd->len = 0; |
10510589 | 1232 | return -EINVAL; |
9d7d6f95 | 1233 | } |
6bc52319 | 1234 | rd->dat_offset = brcmf_sdio_getdatoffset(header); |
4754fcee | 1235 | if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) { |
5e8149f5 | 1236 | brcmf_err("seq %d: bad data offset\n", rx_seq); |
4754fcee | 1237 | bus->sdcnt.rx_badhdr++; |
82d7f3c1 | 1238 | brcmf_sdio_rxfail(bus, false, false); |
4754fcee | 1239 | rd->len = 0; |
10510589 | 1240 | return -ENXIO; |
4754fcee FL |
1241 | } |
1242 | if (rd->seq_num != rx_seq) { | |
5e8149f5 | 1243 | brcmf_err("seq %d: sequence number error, expect %d\n", |
4754fcee FL |
1244 | rx_seq, rd->seq_num); |
1245 | bus->sdcnt.rx_badseq++; | |
1246 | rd->seq_num = rx_seq; | |
1247 | } | |
9d7d6f95 FL |
1248 | /* no need to check the reset for subframe */ |
1249 | if (type == BRCMF_SDIO_FT_SUB) | |
10510589 | 1250 | return 0; |
6bc52319 | 1251 | rd->len_nxtfrm = (swheader & SDPCM_NEXTLEN_MASK) >> SDPCM_NEXTLEN_SHIFT; |
4754fcee FL |
1252 | if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) { |
1253 | /* only warm for NON glom packet */ | |
1254 | if (rd->channel != SDPCM_GLOM_CHANNEL) | |
5e8149f5 | 1255 | brcmf_err("seq %d: next length error\n", rx_seq); |
4754fcee FL |
1256 | rd->len_nxtfrm = 0; |
1257 | } | |
6bc52319 FL |
1258 | swheader = le32_to_cpu(*(__le32 *)(header + 4)); |
1259 | fc = swheader & SDPCM_FCMASK_MASK; | |
4754fcee FL |
1260 | if (bus->flowcontrol != fc) { |
1261 | if (~bus->flowcontrol & fc) | |
1262 | bus->sdcnt.fc_xoff++; | |
1263 | if (bus->flowcontrol & ~fc) | |
1264 | bus->sdcnt.fc_xon++; | |
1265 | bus->sdcnt.fc_rcvd++; | |
1266 | bus->flowcontrol = fc; | |
1267 | } | |
6bc52319 | 1268 | tx_seq_max = (swheader & SDPCM_WINDOW_MASK) >> SDPCM_WINDOW_SHIFT; |
4754fcee | 1269 | if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) { |
5e8149f5 | 1270 | brcmf_err("seq %d: max tx seq number error\n", rx_seq); |
4754fcee FL |
1271 | tx_seq_max = bus->tx_seq + 2; |
1272 | } | |
1273 | bus->tx_max = tx_seq_max; | |
1274 | ||
10510589 | 1275 | return 0; |
4754fcee FL |
1276 | } |
1277 | ||
6bc52319 FL |
1278 | static inline void brcmf_sdio_update_hwhdr(u8 *header, u16 frm_length) |
1279 | { | |
1280 | *(__le16 *)header = cpu_to_le16(frm_length); | |
1281 | *(((__le16 *)header) + 1) = cpu_to_le16(~frm_length); | |
1282 | } | |
1283 | ||
1284 | static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header, | |
1285 | struct brcmf_sdio_hdrinfo *hd_info) | |
1286 | { | |
8da9d2c8 FL |
1287 | u32 hdrval; |
1288 | u8 hdr_offset; | |
6bc52319 FL |
1289 | |
1290 | brcmf_sdio_update_hwhdr(header, hd_info->len); | |
8da9d2c8 FL |
1291 | hdr_offset = SDPCM_HWHDR_LEN; |
1292 | ||
1293 | if (bus->txglom) { | |
1294 | hdrval = (hd_info->len - hdr_offset) | (hd_info->lastfrm << 24); | |
1295 | *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval); | |
1296 | hdrval = (u16)hd_info->tail_pad << 16; | |
1297 | *(((__le32 *)(header + hdr_offset)) + 1) = cpu_to_le32(hdrval); | |
1298 | hdr_offset += SDPCM_HWEXT_LEN; | |
1299 | } | |
6bc52319 | 1300 | |
8da9d2c8 FL |
1301 | hdrval = hd_info->seq_num; |
1302 | hdrval |= (hd_info->channel << SDPCM_CHANNEL_SHIFT) & | |
1303 | SDPCM_CHANNEL_MASK; | |
1304 | hdrval |= (hd_info->dat_offset << SDPCM_DOFFSET_SHIFT) & | |
1305 | SDPCM_DOFFSET_MASK; | |
1306 | *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval); | |
1307 | *(((__le32 *)(header + hdr_offset)) + 1) = 0; | |
1308 | trace_brcmf_sdpcm_hdr(SDPCM_TX + !!(bus->txglom), header); | |
6bc52319 FL |
1309 | } |
1310 | ||
82d7f3c1 | 1311 | static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq) |
5b435de0 AS |
1312 | { |
1313 | u16 dlen, totlen; | |
1314 | u8 *dptr, num = 0; | |
9d7d6f95 | 1315 | u16 sublen; |
0b45bf74 | 1316 | struct sk_buff *pfirst, *pnext; |
5b435de0 AS |
1317 | |
1318 | int errcode; | |
9d7d6f95 | 1319 | u8 doff, sfdoff; |
5b435de0 | 1320 | |
6bc52319 | 1321 | struct brcmf_sdio_hdrinfo rd_new; |
5b435de0 AS |
1322 | |
1323 | /* If packets, issue read(s) and send up packet chain */ | |
1324 | /* Return sequence numbers consumed? */ | |
1325 | ||
c3203374 | 1326 | brcmf_dbg(SDIO, "start: glomd %p glom %p\n", |
b83db862 | 1327 | bus->glomd, skb_peek(&bus->glom)); |
5b435de0 AS |
1328 | |
1329 | /* If there's a descriptor, generate the packet chain */ | |
1330 | if (bus->glomd) { | |
0b45bf74 | 1331 | pfirst = pnext = NULL; |
5b435de0 AS |
1332 | dlen = (u16) (bus->glomd->len); |
1333 | dptr = bus->glomd->data; | |
1334 | if (!dlen || (dlen & 1)) { | |
5e8149f5 | 1335 | brcmf_err("bad glomd len(%d), ignore descriptor\n", |
5b435de0 AS |
1336 | dlen); |
1337 | dlen = 0; | |
1338 | } | |
1339 | ||
1340 | for (totlen = num = 0; dlen; num++) { | |
1341 | /* Get (and move past) next length */ | |
1342 | sublen = get_unaligned_le16(dptr); | |
1343 | dlen -= sizeof(u16); | |
1344 | dptr += sizeof(u16); | |
1345 | if ((sublen < SDPCM_HDRLEN) || | |
1346 | ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) { | |
5e8149f5 | 1347 | brcmf_err("descriptor len %d bad: %d\n", |
5b435de0 AS |
1348 | num, sublen); |
1349 | pnext = NULL; | |
1350 | break; | |
1351 | } | |
e217d1c8 | 1352 | if (sublen % bus->sgentry_align) { |
5e8149f5 | 1353 | brcmf_err("sublen %d not multiple of %d\n", |
e217d1c8 | 1354 | sublen, bus->sgentry_align); |
5b435de0 AS |
1355 | } |
1356 | totlen += sublen; | |
1357 | ||
1358 | /* For last frame, adjust read len so total | |
1359 | is a block multiple */ | |
1360 | if (!dlen) { | |
1361 | sublen += | |
1362 | (roundup(totlen, bus->blocksize) - totlen); | |
1363 | totlen = roundup(totlen, bus->blocksize); | |
1364 | } | |
1365 | ||
1366 | /* Allocate/chain packet for next subframe */ | |
e217d1c8 | 1367 | pnext = brcmu_pkt_buf_get_skb(sublen + bus->sgentry_align); |
5b435de0 | 1368 | if (pnext == NULL) { |
5e8149f5 | 1369 | brcmf_err("bcm_pkt_buf_get_skb failed, num %d len %d\n", |
5b435de0 AS |
1370 | num, sublen); |
1371 | break; | |
1372 | } | |
b83db862 | 1373 | skb_queue_tail(&bus->glom, pnext); |
5b435de0 AS |
1374 | |
1375 | /* Adhere to start alignment requirements */ | |
e217d1c8 | 1376 | pkt_align(pnext, sublen, bus->sgentry_align); |
5b435de0 AS |
1377 | } |
1378 | ||
1379 | /* If all allocations succeeded, save packet chain | |
1380 | in bus structure */ | |
1381 | if (pnext) { | |
1382 | brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n", | |
1383 | totlen, num); | |
4754fcee FL |
1384 | if (BRCMF_GLOM_ON() && bus->cur_read.len && |
1385 | totlen != bus->cur_read.len) { | |
5b435de0 | 1386 | brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n", |
4754fcee | 1387 | bus->cur_read.len, totlen, rxseq); |
5b435de0 | 1388 | } |
5b435de0 AS |
1389 | pfirst = pnext = NULL; |
1390 | } else { | |
82d7f3c1 | 1391 | brcmf_sdio_free_glom(bus); |
5b435de0 AS |
1392 | num = 0; |
1393 | } | |
1394 | ||
1395 | /* Done with descriptor packet */ | |
1396 | brcmu_pkt_buf_free_skb(bus->glomd); | |
1397 | bus->glomd = NULL; | |
4754fcee | 1398 | bus->cur_read.len = 0; |
5b435de0 AS |
1399 | } |
1400 | ||
1401 | /* Ok -- either we just generated a packet chain, | |
1402 | or had one from before */ | |
b83db862 | 1403 | if (!skb_queue_empty(&bus->glom)) { |
5b435de0 AS |
1404 | if (BRCMF_GLOM_ON()) { |
1405 | brcmf_dbg(GLOM, "try superframe read, packet chain:\n"); | |
b83db862 | 1406 | skb_queue_walk(&bus->glom, pnext) { |
5b435de0 AS |
1407 | brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n", |
1408 | pnext, (u8 *) (pnext->data), | |
1409 | pnext->len, pnext->len); | |
1410 | } | |
1411 | } | |
1412 | ||
b83db862 | 1413 | pfirst = skb_peek(&bus->glom); |
82d7f3c1 | 1414 | dlen = (u16) brcmf_sdio_glom_len(bus); |
5b435de0 AS |
1415 | |
1416 | /* Do an SDIO read for the superframe. Configurable iovar to | |
1417 | * read directly into the chained packet, or allocate a large | |
1418 | * packet and and copy into the chain. | |
1419 | */ | |
38b0b0dd | 1420 | sdio_claim_host(bus->sdiodev->func[1]); |
a39be27b | 1421 | errcode = brcmf_sdiod_recv_chain(bus->sdiodev, |
a39be27b | 1422 | &bus->glom, dlen); |
38b0b0dd | 1423 | sdio_release_host(bus->sdiodev->func[1]); |
80969836 | 1424 | bus->sdcnt.f2rxdata++; |
5b435de0 AS |
1425 | |
1426 | /* On failure, kill the superframe, allow a couple retries */ | |
1427 | if (errcode < 0) { | |
5e8149f5 | 1428 | brcmf_err("glom read of %d bytes failed: %d\n", |
5b435de0 | 1429 | dlen, errcode); |
5b435de0 | 1430 | |
38b0b0dd | 1431 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 1432 | if (bus->glomerr++ < 3) { |
82d7f3c1 | 1433 | brcmf_sdio_rxfail(bus, true, true); |
5b435de0 AS |
1434 | } else { |
1435 | bus->glomerr = 0; | |
82d7f3c1 | 1436 | brcmf_sdio_rxfail(bus, true, false); |
80969836 | 1437 | bus->sdcnt.rxglomfail++; |
82d7f3c1 | 1438 | brcmf_sdio_free_glom(bus); |
5b435de0 | 1439 | } |
38b0b0dd | 1440 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1441 | return 0; |
1442 | } | |
1e023829 JP |
1443 | |
1444 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), | |
1445 | pfirst->data, min_t(int, pfirst->len, 48), | |
1446 | "SUPERFRAME:\n"); | |
5b435de0 | 1447 | |
9d7d6f95 FL |
1448 | rd_new.seq_num = rxseq; |
1449 | rd_new.len = dlen; | |
38b0b0dd | 1450 | sdio_claim_host(bus->sdiodev->func[1]); |
6bc52319 FL |
1451 | errcode = brcmf_sdio_hdparse(bus, pfirst->data, &rd_new, |
1452 | BRCMF_SDIO_FT_SUPER); | |
38b0b0dd | 1453 | sdio_release_host(bus->sdiodev->func[1]); |
9d7d6f95 | 1454 | bus->cur_read.len = rd_new.len_nxtfrm << 4; |
5b435de0 AS |
1455 | |
1456 | /* Remove superframe header, remember offset */ | |
9d7d6f95 FL |
1457 | skb_pull(pfirst, rd_new.dat_offset); |
1458 | sfdoff = rd_new.dat_offset; | |
0b45bf74 | 1459 | num = 0; |
5b435de0 AS |
1460 | |
1461 | /* Validate all the subframe headers */ | |
0b45bf74 AS |
1462 | skb_queue_walk(&bus->glom, pnext) { |
1463 | /* leave when invalid subframe is found */ | |
1464 | if (errcode) | |
1465 | break; | |
1466 | ||
9d7d6f95 FL |
1467 | rd_new.len = pnext->len; |
1468 | rd_new.seq_num = rxseq++; | |
38b0b0dd | 1469 | sdio_claim_host(bus->sdiodev->func[1]); |
6bc52319 FL |
1470 | errcode = brcmf_sdio_hdparse(bus, pnext->data, &rd_new, |
1471 | BRCMF_SDIO_FT_SUB); | |
38b0b0dd | 1472 | sdio_release_host(bus->sdiodev->func[1]); |
1e023829 | 1473 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
9d7d6f95 | 1474 | pnext->data, 32, "subframe:\n"); |
5b435de0 | 1475 | |
0b45bf74 | 1476 | num++; |
5b435de0 AS |
1477 | } |
1478 | ||
1479 | if (errcode) { | |
1480 | /* Terminate frame on error, request | |
1481 | a couple retries */ | |
38b0b0dd | 1482 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1483 | if (bus->glomerr++ < 3) { |
1484 | /* Restore superframe header space */ | |
1485 | skb_push(pfirst, sfdoff); | |
82d7f3c1 | 1486 | brcmf_sdio_rxfail(bus, true, true); |
5b435de0 AS |
1487 | } else { |
1488 | bus->glomerr = 0; | |
82d7f3c1 | 1489 | brcmf_sdio_rxfail(bus, true, false); |
80969836 | 1490 | bus->sdcnt.rxglomfail++; |
82d7f3c1 | 1491 | brcmf_sdio_free_glom(bus); |
5b435de0 | 1492 | } |
38b0b0dd | 1493 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee | 1494 | bus->cur_read.len = 0; |
5b435de0 AS |
1495 | return 0; |
1496 | } | |
1497 | ||
1498 | /* Basic SD framing looks ok - process each packet (header) */ | |
5b435de0 | 1499 | |
0b45bf74 | 1500 | skb_queue_walk_safe(&bus->glom, pfirst, pnext) { |
5b435de0 AS |
1501 | dptr = (u8 *) (pfirst->data); |
1502 | sublen = get_unaligned_le16(dptr); | |
6bc52319 | 1503 | doff = brcmf_sdio_getdatoffset(&dptr[SDPCM_HWHDR_LEN]); |
5b435de0 | 1504 | |
1e023829 | 1505 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), |
9d7d6f95 FL |
1506 | dptr, pfirst->len, |
1507 | "Rx Subframe Data:\n"); | |
5b435de0 AS |
1508 | |
1509 | __skb_trim(pfirst, sublen); | |
1510 | skb_pull(pfirst, doff); | |
1511 | ||
1512 | if (pfirst->len == 0) { | |
0b45bf74 | 1513 | skb_unlink(pfirst, &bus->glom); |
5b435de0 | 1514 | brcmu_pkt_buf_free_skb(pfirst); |
5b435de0 | 1515 | continue; |
5b435de0 AS |
1516 | } |
1517 | ||
1e023829 JP |
1518 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
1519 | pfirst->data, | |
1520 | min_t(int, pfirst->len, 32), | |
1521 | "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n", | |
1522 | bus->glom.qlen, pfirst, pfirst->data, | |
1523 | pfirst->len, pfirst->next, | |
1524 | pfirst->prev); | |
05f3820b AS |
1525 | skb_unlink(pfirst, &bus->glom); |
1526 | brcmf_rx_frame(bus->sdiodev->dev, pfirst); | |
1527 | bus->sdcnt.rxglompkts++; | |
5b435de0 | 1528 | } |
5b435de0 | 1529 | |
80969836 | 1530 | bus->sdcnt.rxglomframes++; |
5b435de0 AS |
1531 | } |
1532 | return num; | |
1533 | } | |
1534 | ||
82d7f3c1 AS |
1535 | static int brcmf_sdio_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition, |
1536 | bool *pending) | |
5b435de0 AS |
1537 | { |
1538 | DECLARE_WAITQUEUE(wait, current); | |
1539 | int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT); | |
1540 | ||
1541 | /* Wait until control frame is available */ | |
1542 | add_wait_queue(&bus->dcmd_resp_wait, &wait); | |
1543 | set_current_state(TASK_INTERRUPTIBLE); | |
1544 | ||
1545 | while (!(*condition) && (!signal_pending(current) && timeout)) | |
1546 | timeout = schedule_timeout(timeout); | |
1547 | ||
1548 | if (signal_pending(current)) | |
1549 | *pending = true; | |
1550 | ||
1551 | set_current_state(TASK_RUNNING); | |
1552 | remove_wait_queue(&bus->dcmd_resp_wait, &wait); | |
1553 | ||
1554 | return timeout; | |
1555 | } | |
1556 | ||
82d7f3c1 | 1557 | static int brcmf_sdio_dcmd_resp_wake(struct brcmf_sdio *bus) |
5b435de0 AS |
1558 | { |
1559 | if (waitqueue_active(&bus->dcmd_resp_wait)) | |
1560 | wake_up_interruptible(&bus->dcmd_resp_wait); | |
1561 | ||
1562 | return 0; | |
1563 | } | |
1564 | static void | |
82d7f3c1 | 1565 | brcmf_sdio_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff) |
5b435de0 AS |
1566 | { |
1567 | uint rdlen, pad; | |
dd43a01c | 1568 | u8 *buf = NULL, *rbuf; |
5b435de0 AS |
1569 | int sdret; |
1570 | ||
1571 | brcmf_dbg(TRACE, "Enter\n"); | |
1572 | ||
dd43a01c FL |
1573 | if (bus->rxblen) |
1574 | buf = vzalloc(bus->rxblen); | |
14f8dc49 | 1575 | if (!buf) |
dd43a01c | 1576 | goto done; |
14f8dc49 | 1577 | |
dd43a01c | 1578 | rbuf = bus->rxbuf; |
9b2d2f2a | 1579 | pad = ((unsigned long)rbuf % bus->head_align); |
5b435de0 | 1580 | if (pad) |
9b2d2f2a | 1581 | rbuf += (bus->head_align - pad); |
5b435de0 AS |
1582 | |
1583 | /* Copy the already-read portion over */ | |
dd43a01c | 1584 | memcpy(buf, hdr, BRCMF_FIRSTREAD); |
5b435de0 AS |
1585 | if (len <= BRCMF_FIRSTREAD) |
1586 | goto gotpkt; | |
1587 | ||
1588 | /* Raise rdlen to next SDIO block to avoid tail command */ | |
1589 | rdlen = len - BRCMF_FIRSTREAD; | |
1590 | if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { | |
1591 | pad = bus->blocksize - (rdlen % bus->blocksize); | |
1592 | if ((pad <= bus->roundup) && (pad < bus->blocksize) && | |
b01a6b3c | 1593 | ((len + pad) < bus->sdiodev->bus_if->maxctl)) |
5b435de0 | 1594 | rdlen += pad; |
9b2d2f2a AS |
1595 | } else if (rdlen % bus->head_align) { |
1596 | rdlen += bus->head_align - (rdlen % bus->head_align); | |
5b435de0 AS |
1597 | } |
1598 | ||
5b435de0 | 1599 | /* Drop if the read is too big or it exceeds our maximum */ |
b01a6b3c | 1600 | if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) { |
5e8149f5 | 1601 | brcmf_err("%d-byte control read exceeds %d-byte buffer\n", |
b01a6b3c | 1602 | rdlen, bus->sdiodev->bus_if->maxctl); |
82d7f3c1 | 1603 | brcmf_sdio_rxfail(bus, false, false); |
5b435de0 AS |
1604 | goto done; |
1605 | } | |
1606 | ||
b01a6b3c | 1607 | if ((len - doff) > bus->sdiodev->bus_if->maxctl) { |
5e8149f5 | 1608 | brcmf_err("%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n", |
b01a6b3c | 1609 | len, len - doff, bus->sdiodev->bus_if->maxctl); |
80969836 | 1610 | bus->sdcnt.rx_toolong++; |
82d7f3c1 | 1611 | brcmf_sdio_rxfail(bus, false, false); |
5b435de0 AS |
1612 | goto done; |
1613 | } | |
1614 | ||
dd43a01c | 1615 | /* Read remain of frame body */ |
a7cdd821 | 1616 | sdret = brcmf_sdiod_recv_buf(bus->sdiodev, rbuf, rdlen); |
80969836 | 1617 | bus->sdcnt.f2rxdata++; |
5b435de0 AS |
1618 | |
1619 | /* Control frame failures need retransmission */ | |
1620 | if (sdret < 0) { | |
5e8149f5 | 1621 | brcmf_err("read %d control bytes failed: %d\n", |
5b435de0 | 1622 | rdlen, sdret); |
80969836 | 1623 | bus->sdcnt.rxc_errors++; |
82d7f3c1 | 1624 | brcmf_sdio_rxfail(bus, true, true); |
5b435de0 | 1625 | goto done; |
dd43a01c FL |
1626 | } else |
1627 | memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen); | |
5b435de0 AS |
1628 | |
1629 | gotpkt: | |
1630 | ||
1e023829 | 1631 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), |
dd43a01c | 1632 | buf, len, "RxCtrl:\n"); |
5b435de0 AS |
1633 | |
1634 | /* Point to valid data and indicate its length */ | |
dd43a01c FL |
1635 | spin_lock_bh(&bus->rxctl_lock); |
1636 | if (bus->rxctl) { | |
5e8149f5 | 1637 | brcmf_err("last control frame is being processed.\n"); |
dd43a01c FL |
1638 | spin_unlock_bh(&bus->rxctl_lock); |
1639 | vfree(buf); | |
1640 | goto done; | |
1641 | } | |
1642 | bus->rxctl = buf + doff; | |
1643 | bus->rxctl_orig = buf; | |
5b435de0 | 1644 | bus->rxlen = len - doff; |
dd43a01c | 1645 | spin_unlock_bh(&bus->rxctl_lock); |
5b435de0 AS |
1646 | |
1647 | done: | |
1648 | /* Awake any waiters */ | |
82d7f3c1 | 1649 | brcmf_sdio_dcmd_resp_wake(bus); |
5b435de0 AS |
1650 | } |
1651 | ||
1652 | /* Pad read to blocksize for efficiency */ | |
82d7f3c1 | 1653 | static void brcmf_sdio_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen) |
5b435de0 AS |
1654 | { |
1655 | if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) { | |
1656 | *pad = bus->blocksize - (*rdlen % bus->blocksize); | |
1657 | if (*pad <= bus->roundup && *pad < bus->blocksize && | |
1658 | *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ) | |
1659 | *rdlen += *pad; | |
9b2d2f2a AS |
1660 | } else if (*rdlen % bus->head_align) { |
1661 | *rdlen += bus->head_align - (*rdlen % bus->head_align); | |
5b435de0 AS |
1662 | } |
1663 | } | |
1664 | ||
4754fcee | 1665 | static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes) |
5b435de0 | 1666 | { |
5b435de0 AS |
1667 | struct sk_buff *pkt; /* Packet for event or data frames */ |
1668 | u16 pad; /* Number of pad bytes to read */ | |
5b435de0 | 1669 | uint rxleft = 0; /* Remaining number of frames allowed */ |
349e7104 | 1670 | int ret; /* Return code from calls */ |
5b435de0 | 1671 | uint rxcount = 0; /* Total frames read */ |
6bc52319 | 1672 | struct brcmf_sdio_hdrinfo *rd = &bus->cur_read, rd_new; |
4754fcee | 1673 | u8 head_read = 0; |
5b435de0 AS |
1674 | |
1675 | brcmf_dbg(TRACE, "Enter\n"); | |
1676 | ||
1677 | /* Not finished unless we encounter no more frames indication */ | |
4754fcee | 1678 | bus->rxpending = true; |
5b435de0 | 1679 | |
4754fcee | 1680 | for (rd->seq_num = bus->rx_seq, rxleft = maxframes; |
8d169aa0 | 1681 | !bus->rxskip && rxleft && |
712ac5b3 | 1682 | bus->sdiodev->bus_if->state != BRCMF_BUS_DOWN; |
4754fcee | 1683 | rd->seq_num++, rxleft--) { |
5b435de0 AS |
1684 | |
1685 | /* Handle glomming separately */ | |
b83db862 | 1686 | if (bus->glomd || !skb_queue_empty(&bus->glom)) { |
5b435de0 AS |
1687 | u8 cnt; |
1688 | brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n", | |
b83db862 | 1689 | bus->glomd, skb_peek(&bus->glom)); |
82d7f3c1 | 1690 | cnt = brcmf_sdio_rxglom(bus, rd->seq_num); |
5b435de0 | 1691 | brcmf_dbg(GLOM, "rxglom returned %d\n", cnt); |
4754fcee | 1692 | rd->seq_num += cnt - 1; |
5b435de0 AS |
1693 | rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1; |
1694 | continue; | |
1695 | } | |
1696 | ||
4754fcee FL |
1697 | rd->len_left = rd->len; |
1698 | /* read header first for unknow frame length */ | |
38b0b0dd | 1699 | sdio_claim_host(bus->sdiodev->func[1]); |
4754fcee | 1700 | if (!rd->len) { |
a39be27b | 1701 | ret = brcmf_sdiod_recv_buf(bus->sdiodev, |
a39be27b | 1702 | bus->rxhdr, BRCMF_FIRSTREAD); |
4754fcee | 1703 | bus->sdcnt.f2rxhdrs++; |
349e7104 | 1704 | if (ret < 0) { |
5e8149f5 | 1705 | brcmf_err("RXHEADER FAILED: %d\n", |
349e7104 | 1706 | ret); |
4754fcee | 1707 | bus->sdcnt.rx_hdrfail++; |
82d7f3c1 | 1708 | brcmf_sdio_rxfail(bus, true, true); |
38b0b0dd | 1709 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1710 | continue; |
5b435de0 | 1711 | } |
5b435de0 | 1712 | |
4754fcee | 1713 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(), |
1e023829 JP |
1714 | bus->rxhdr, SDPCM_HDRLEN, |
1715 | "RxHdr:\n"); | |
5b435de0 | 1716 | |
6bc52319 FL |
1717 | if (brcmf_sdio_hdparse(bus, bus->rxhdr, rd, |
1718 | BRCMF_SDIO_FT_NORMAL)) { | |
38b0b0dd | 1719 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1720 | if (!bus->rxpending) |
1721 | break; | |
1722 | else | |
1723 | continue; | |
5b435de0 AS |
1724 | } |
1725 | ||
4754fcee | 1726 | if (rd->channel == SDPCM_CONTROL_CHANNEL) { |
82d7f3c1 AS |
1727 | brcmf_sdio_read_control(bus, bus->rxhdr, |
1728 | rd->len, | |
1729 | rd->dat_offset); | |
4754fcee FL |
1730 | /* prepare the descriptor for the next read */ |
1731 | rd->len = rd->len_nxtfrm << 4; | |
1732 | rd->len_nxtfrm = 0; | |
1733 | /* treat all packet as event if we don't know */ | |
1734 | rd->channel = SDPCM_EVENT_CHANNEL; | |
38b0b0dd | 1735 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1736 | continue; |
1737 | } | |
4754fcee FL |
1738 | rd->len_left = rd->len > BRCMF_FIRSTREAD ? |
1739 | rd->len - BRCMF_FIRSTREAD : 0; | |
1740 | head_read = BRCMF_FIRSTREAD; | |
5b435de0 AS |
1741 | } |
1742 | ||
82d7f3c1 | 1743 | brcmf_sdio_pad(bus, &pad, &rd->len_left); |
5b435de0 | 1744 | |
4754fcee | 1745 | pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read + |
9b2d2f2a | 1746 | bus->head_align); |
5b435de0 AS |
1747 | if (!pkt) { |
1748 | /* Give up on data, request rtx of events */ | |
5e8149f5 | 1749 | brcmf_err("brcmu_pkt_buf_get_skb failed\n"); |
82d7f3c1 | 1750 | brcmf_sdio_rxfail(bus, false, |
4754fcee | 1751 | RETRYCHAN(rd->channel)); |
38b0b0dd | 1752 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1753 | continue; |
1754 | } | |
4754fcee | 1755 | skb_pull(pkt, head_read); |
9b2d2f2a | 1756 | pkt_align(pkt, rd->len_left, bus->head_align); |
5b435de0 | 1757 | |
a7cdd821 | 1758 | ret = brcmf_sdiod_recv_pkt(bus->sdiodev, pkt); |
80969836 | 1759 | bus->sdcnt.f2rxdata++; |
38b0b0dd | 1760 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1761 | |
349e7104 | 1762 | if (ret < 0) { |
5e8149f5 | 1763 | brcmf_err("read %d bytes from channel %d failed: %d\n", |
349e7104 | 1764 | rd->len, rd->channel, ret); |
5b435de0 | 1765 | brcmu_pkt_buf_free_skb(pkt); |
38b0b0dd | 1766 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 1767 | brcmf_sdio_rxfail(bus, true, |
4754fcee | 1768 | RETRYCHAN(rd->channel)); |
38b0b0dd | 1769 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1770 | continue; |
1771 | } | |
1772 | ||
4754fcee FL |
1773 | if (head_read) { |
1774 | skb_push(pkt, head_read); | |
1775 | memcpy(pkt->data, bus->rxhdr, head_read); | |
1776 | head_read = 0; | |
1777 | } else { | |
1778 | memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN); | |
1779 | rd_new.seq_num = rd->seq_num; | |
38b0b0dd | 1780 | sdio_claim_host(bus->sdiodev->func[1]); |
6bc52319 FL |
1781 | if (brcmf_sdio_hdparse(bus, bus->rxhdr, &rd_new, |
1782 | BRCMF_SDIO_FT_NORMAL)) { | |
4754fcee FL |
1783 | rd->len = 0; |
1784 | brcmu_pkt_buf_free_skb(pkt); | |
1785 | } | |
1786 | bus->sdcnt.rx_readahead_cnt++; | |
1787 | if (rd->len != roundup(rd_new.len, 16)) { | |
5e8149f5 | 1788 | brcmf_err("frame length mismatch:read %d, should be %d\n", |
4754fcee FL |
1789 | rd->len, |
1790 | roundup(rd_new.len, 16) >> 4); | |
1791 | rd->len = 0; | |
82d7f3c1 | 1792 | brcmf_sdio_rxfail(bus, true, true); |
38b0b0dd | 1793 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1794 | brcmu_pkt_buf_free_skb(pkt); |
1795 | continue; | |
1796 | } | |
38b0b0dd | 1797 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1798 | rd->len_nxtfrm = rd_new.len_nxtfrm; |
1799 | rd->channel = rd_new.channel; | |
1800 | rd->dat_offset = rd_new.dat_offset; | |
1801 | ||
1802 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && | |
1803 | BRCMF_DATA_ON()) && | |
1804 | BRCMF_HDRS_ON(), | |
1805 | bus->rxhdr, SDPCM_HDRLEN, | |
1806 | "RxHdr:\n"); | |
1807 | ||
1808 | if (rd_new.channel == SDPCM_CONTROL_CHANNEL) { | |
5e8149f5 | 1809 | brcmf_err("readahead on control packet %d?\n", |
4754fcee FL |
1810 | rd_new.seq_num); |
1811 | /* Force retry w/normal header read */ | |
1812 | rd->len = 0; | |
38b0b0dd | 1813 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 1814 | brcmf_sdio_rxfail(bus, false, true); |
38b0b0dd | 1815 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1816 | brcmu_pkt_buf_free_skb(pkt); |
1817 | continue; | |
1818 | } | |
1819 | } | |
5b435de0 | 1820 | |
1e023829 | 1821 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), |
4754fcee | 1822 | pkt->data, rd->len, "Rx Data:\n"); |
5b435de0 | 1823 | |
5b435de0 | 1824 | /* Save superframe descriptor and allocate packet frame */ |
4754fcee | 1825 | if (rd->channel == SDPCM_GLOM_CHANNEL) { |
6bc52319 | 1826 | if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_HWHDR_LEN])) { |
5b435de0 | 1827 | brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n", |
4754fcee | 1828 | rd->len); |
1e023829 | 1829 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
4754fcee | 1830 | pkt->data, rd->len, |
1e023829 | 1831 | "Glom Data:\n"); |
4754fcee | 1832 | __skb_trim(pkt, rd->len); |
5b435de0 AS |
1833 | skb_pull(pkt, SDPCM_HDRLEN); |
1834 | bus->glomd = pkt; | |
1835 | } else { | |
5e8149f5 | 1836 | brcmf_err("%s: glom superframe w/o " |
5b435de0 | 1837 | "descriptor!\n", __func__); |
38b0b0dd | 1838 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 1839 | brcmf_sdio_rxfail(bus, false, false); |
38b0b0dd | 1840 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1841 | } |
4754fcee FL |
1842 | /* prepare the descriptor for the next read */ |
1843 | rd->len = rd->len_nxtfrm << 4; | |
1844 | rd->len_nxtfrm = 0; | |
1845 | /* treat all packet as event if we don't know */ | |
1846 | rd->channel = SDPCM_EVENT_CHANNEL; | |
5b435de0 AS |
1847 | continue; |
1848 | } | |
1849 | ||
1850 | /* Fill in packet len and prio, deliver upward */ | |
4754fcee FL |
1851 | __skb_trim(pkt, rd->len); |
1852 | skb_pull(pkt, rd->dat_offset); | |
1853 | ||
1854 | /* prepare the descriptor for the next read */ | |
1855 | rd->len = rd->len_nxtfrm << 4; | |
1856 | rd->len_nxtfrm = 0; | |
1857 | /* treat all packet as event if we don't know */ | |
1858 | rd->channel = SDPCM_EVENT_CHANNEL; | |
5b435de0 AS |
1859 | |
1860 | if (pkt->len == 0) { | |
1861 | brcmu_pkt_buf_free_skb(pkt); | |
1862 | continue; | |
5b435de0 AS |
1863 | } |
1864 | ||
05f3820b | 1865 | brcmf_rx_frame(bus->sdiodev->dev, pkt); |
5b435de0 | 1866 | } |
4754fcee | 1867 | |
5b435de0 | 1868 | rxcount = maxframes - rxleft; |
5b435de0 AS |
1869 | /* Message if we hit the limit */ |
1870 | if (!rxleft) | |
4754fcee | 1871 | brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes); |
5b435de0 | 1872 | else |
5b435de0 AS |
1873 | brcmf_dbg(DATA, "processed %d frames\n", rxcount); |
1874 | /* Back off rxseq if awaiting rtx, update rx_seq */ | |
1875 | if (bus->rxskip) | |
4754fcee FL |
1876 | rd->seq_num--; |
1877 | bus->rx_seq = rd->seq_num; | |
5b435de0 AS |
1878 | |
1879 | return rxcount; | |
1880 | } | |
1881 | ||
5b435de0 | 1882 | static void |
82d7f3c1 | 1883 | brcmf_sdio_wait_event_wakeup(struct brcmf_sdio *bus) |
5b435de0 AS |
1884 | { |
1885 | if (waitqueue_active(&bus->ctrl_wait)) | |
1886 | wake_up_interruptible(&bus->ctrl_wait); | |
1887 | return; | |
1888 | } | |
1889 | ||
8da9d2c8 FL |
1890 | static int brcmf_sdio_txpkt_hdalign(struct brcmf_sdio *bus, struct sk_buff *pkt) |
1891 | { | |
e217d1c8 | 1892 | u16 head_pad; |
8da9d2c8 FL |
1893 | u8 *dat_buf; |
1894 | ||
8da9d2c8 FL |
1895 | dat_buf = (u8 *)(pkt->data); |
1896 | ||
1897 | /* Check head padding */ | |
e217d1c8 | 1898 | head_pad = ((unsigned long)dat_buf % bus->head_align); |
8da9d2c8 FL |
1899 | if (head_pad) { |
1900 | if (skb_headroom(pkt) < head_pad) { | |
1901 | bus->sdiodev->bus_if->tx_realloc++; | |
1902 | head_pad = 0; | |
1903 | if (skb_cow(pkt, head_pad)) | |
1904 | return -ENOMEM; | |
1905 | } | |
1906 | skb_push(pkt, head_pad); | |
1907 | dat_buf = (u8 *)(pkt->data); | |
1908 | memset(dat_buf, 0, head_pad + bus->tx_hdrlen); | |
1909 | } | |
1910 | return head_pad; | |
1911 | } | |
1912 | ||
5491c11c FL |
1913 | /** |
1914 | * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for | |
1915 | * bus layer usage. | |
1916 | */ | |
b05e9254 | 1917 | /* flag marking a dummy skb added for DMA alignment requirement */ |
5491c11c | 1918 | #define ALIGN_SKB_FLAG 0x8000 |
b05e9254 | 1919 | /* bit mask of data length chopped from the previous packet */ |
5491c11c FL |
1920 | #define ALIGN_SKB_CHOP_LEN_MASK 0x7fff |
1921 | ||
8da9d2c8 | 1922 | static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus, |
a64304f0 | 1923 | struct sk_buff_head *pktq, |
8da9d2c8 | 1924 | struct sk_buff *pkt, u16 total_len) |
a64304f0 | 1925 | { |
8da9d2c8 | 1926 | struct brcmf_sdio_dev *sdiodev; |
a64304f0 | 1927 | struct sk_buff *pkt_pad; |
e217d1c8 | 1928 | u16 tail_pad, tail_chop, chain_pad; |
a64304f0 | 1929 | unsigned int blksize; |
8da9d2c8 FL |
1930 | bool lastfrm; |
1931 | int ntail, ret; | |
a64304f0 | 1932 | |
8da9d2c8 | 1933 | sdiodev = bus->sdiodev; |
a64304f0 | 1934 | blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize; |
a64304f0 | 1935 | /* sg entry alignment should be a divisor of block size */ |
e217d1c8 | 1936 | WARN_ON(blksize % bus->sgentry_align); |
a64304f0 AS |
1937 | |
1938 | /* Check tail padding */ | |
8da9d2c8 FL |
1939 | lastfrm = skb_queue_is_last(pktq, pkt); |
1940 | tail_pad = 0; | |
e217d1c8 | 1941 | tail_chop = pkt->len % bus->sgentry_align; |
8da9d2c8 | 1942 | if (tail_chop) |
e217d1c8 | 1943 | tail_pad = bus->sgentry_align - tail_chop; |
8da9d2c8 FL |
1944 | chain_pad = (total_len + tail_pad) % blksize; |
1945 | if (lastfrm && chain_pad) | |
1946 | tail_pad += blksize - chain_pad; | |
a64304f0 | 1947 | if (skb_tailroom(pkt) < tail_pad && pkt->len > blksize) { |
8da9d2c8 FL |
1948 | pkt_pad = bus->txglom_sgpad; |
1949 | if (pkt_pad == NULL) | |
1950 | brcmu_pkt_buf_get_skb(tail_pad + tail_chop); | |
a64304f0 AS |
1951 | if (pkt_pad == NULL) |
1952 | return -ENOMEM; | |
8da9d2c8 FL |
1953 | ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad); |
1954 | if (unlikely(ret < 0)) | |
1955 | return ret; | |
a64304f0 AS |
1956 | memcpy(pkt_pad->data, |
1957 | pkt->data + pkt->len - tail_chop, | |
1958 | tail_chop); | |
1959 | *(u32 *)(pkt_pad->cb) = ALIGN_SKB_FLAG + tail_chop; | |
1960 | skb_trim(pkt, pkt->len - tail_chop); | |
1961 | __skb_queue_after(pktq, pkt, pkt_pad); | |
1962 | } else { | |
1963 | ntail = pkt->data_len + tail_pad - | |
1964 | (pkt->end - pkt->tail); | |
1965 | if (skb_cloned(pkt) || ntail > 0) | |
1966 | if (pskb_expand_head(pkt, 0, ntail, GFP_ATOMIC)) | |
1967 | return -ENOMEM; | |
1968 | if (skb_linearize(pkt)) | |
1969 | return -ENOMEM; | |
a64304f0 AS |
1970 | __skb_put(pkt, tail_pad); |
1971 | } | |
1972 | ||
8da9d2c8 | 1973 | return tail_pad; |
a64304f0 AS |
1974 | } |
1975 | ||
b05e9254 FL |
1976 | /** |
1977 | * brcmf_sdio_txpkt_prep - packet preparation for transmit | |
1978 | * @bus: brcmf_sdio structure pointer | |
1979 | * @pktq: packet list pointer | |
1980 | * @chan: virtual channel to transmit the packet | |
1981 | * | |
1982 | * Processes to be applied to the packet | |
1983 | * - Align data buffer pointer | |
1984 | * - Align data buffer length | |
1985 | * - Prepare header | |
1986 | * Return: negative value if there is error | |
1987 | */ | |
1988 | static int | |
1989 | brcmf_sdio_txpkt_prep(struct brcmf_sdio *bus, struct sk_buff_head *pktq, | |
1990 | uint chan) | |
5b435de0 | 1991 | { |
8da9d2c8 | 1992 | u16 head_pad, total_len; |
a64304f0 | 1993 | struct sk_buff *pkt_next; |
8da9d2c8 FL |
1994 | u8 txseq; |
1995 | int ret; | |
6bc52319 | 1996 | struct brcmf_sdio_hdrinfo hd_info = {0}; |
b05e9254 | 1997 | |
8da9d2c8 FL |
1998 | txseq = bus->tx_seq; |
1999 | total_len = 0; | |
2000 | skb_queue_walk(pktq, pkt_next) { | |
2001 | /* alignment packet inserted in previous | |
2002 | * loop cycle can be skipped as it is | |
2003 | * already properly aligned and does not | |
2004 | * need an sdpcm header. | |
2005 | */ | |
2006 | if (*(u32 *)(pkt_next->cb) & ALIGN_SKB_FLAG) | |
2007 | continue; | |
5b435de0 | 2008 | |
8da9d2c8 FL |
2009 | /* align packet data pointer */ |
2010 | ret = brcmf_sdio_txpkt_hdalign(bus, pkt_next); | |
2011 | if (ret < 0) | |
2012 | return ret; | |
2013 | head_pad = (u16)ret; | |
2014 | if (head_pad) | |
2015 | memset(pkt_next->data, 0, head_pad + bus->tx_hdrlen); | |
5b435de0 | 2016 | |
8da9d2c8 | 2017 | total_len += pkt_next->len; |
5b435de0 | 2018 | |
a64304f0 | 2019 | hd_info.len = pkt_next->len; |
8da9d2c8 FL |
2020 | hd_info.lastfrm = skb_queue_is_last(pktq, pkt_next); |
2021 | if (bus->txglom && pktq->qlen > 1) { | |
2022 | ret = brcmf_sdio_txpkt_prep_sg(bus, pktq, | |
2023 | pkt_next, total_len); | |
2024 | if (ret < 0) | |
2025 | return ret; | |
2026 | hd_info.tail_pad = (u16)ret; | |
2027 | total_len += (u16)ret; | |
2028 | } | |
5b435de0 | 2029 | |
8da9d2c8 FL |
2030 | hd_info.channel = chan; |
2031 | hd_info.dat_offset = head_pad + bus->tx_hdrlen; | |
2032 | hd_info.seq_num = txseq++; | |
2033 | ||
2034 | /* Now fill the header */ | |
2035 | brcmf_sdio_hdpack(bus, pkt_next->data, &hd_info); | |
2036 | ||
2037 | if (BRCMF_BYTES_ON() && | |
2038 | ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) || | |
2039 | (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL))) | |
2040 | brcmf_dbg_hex_dump(true, pkt_next, hd_info.len, | |
2041 | "Tx Frame:\n"); | |
2042 | else if (BRCMF_HDRS_ON()) | |
2043 | brcmf_dbg_hex_dump(true, pkt_next, | |
2044 | head_pad + bus->tx_hdrlen, | |
2045 | "Tx Header:\n"); | |
2046 | } | |
2047 | /* Hardware length tag of the first packet should be total | |
2048 | * length of the chain (including padding) | |
2049 | */ | |
2050 | if (bus->txglom) | |
2051 | brcmf_sdio_update_hwhdr(pktq->next->data, total_len); | |
b05e9254 FL |
2052 | return 0; |
2053 | } | |
5b435de0 | 2054 | |
b05e9254 FL |
2055 | /** |
2056 | * brcmf_sdio_txpkt_postp - packet post processing for transmit | |
2057 | * @bus: brcmf_sdio structure pointer | |
2058 | * @pktq: packet list pointer | |
2059 | * | |
2060 | * Processes to be applied to the packet | |
2061 | * - Remove head padding | |
2062 | * - Remove tail padding | |
2063 | */ | |
2064 | static void | |
2065 | brcmf_sdio_txpkt_postp(struct brcmf_sdio *bus, struct sk_buff_head *pktq) | |
2066 | { | |
2067 | u8 *hdr; | |
2068 | u32 dat_offset; | |
8da9d2c8 | 2069 | u16 tail_pad; |
b05e9254 FL |
2070 | u32 dummy_flags, chop_len; |
2071 | struct sk_buff *pkt_next, *tmp, *pkt_prev; | |
2072 | ||
2073 | skb_queue_walk_safe(pktq, pkt_next, tmp) { | |
2074 | dummy_flags = *(u32 *)(pkt_next->cb); | |
5491c11c FL |
2075 | if (dummy_flags & ALIGN_SKB_FLAG) { |
2076 | chop_len = dummy_flags & ALIGN_SKB_CHOP_LEN_MASK; | |
b05e9254 FL |
2077 | if (chop_len) { |
2078 | pkt_prev = pkt_next->prev; | |
b05e9254 FL |
2079 | skb_put(pkt_prev, chop_len); |
2080 | } | |
2081 | __skb_unlink(pkt_next, pktq); | |
2082 | brcmu_pkt_buf_free_skb(pkt_next); | |
2083 | } else { | |
8da9d2c8 | 2084 | hdr = pkt_next->data + bus->tx_hdrlen - SDPCM_SWHDR_LEN; |
b05e9254 FL |
2085 | dat_offset = le32_to_cpu(*(__le32 *)hdr); |
2086 | dat_offset = (dat_offset & SDPCM_DOFFSET_MASK) >> | |
2087 | SDPCM_DOFFSET_SHIFT; | |
2088 | skb_pull(pkt_next, dat_offset); | |
8da9d2c8 FL |
2089 | if (bus->txglom) { |
2090 | tail_pad = le16_to_cpu(*(__le16 *)(hdr - 2)); | |
2091 | skb_trim(pkt_next, pkt_next->len - tail_pad); | |
2092 | } | |
b05e9254 | 2093 | } |
5b435de0 | 2094 | } |
b05e9254 | 2095 | } |
5b435de0 | 2096 | |
b05e9254 FL |
2097 | /* Writes a HW/SW header into the packet and sends it. */ |
2098 | /* Assumes: (a) header space already there, (b) caller holds lock */ | |
82d7f3c1 AS |
2099 | static int brcmf_sdio_txpkt(struct brcmf_sdio *bus, struct sk_buff_head *pktq, |
2100 | uint chan) | |
b05e9254 FL |
2101 | { |
2102 | int ret; | |
2103 | int i; | |
8da9d2c8 | 2104 | struct sk_buff *pkt_next, *tmp; |
b05e9254 FL |
2105 | |
2106 | brcmf_dbg(TRACE, "Enter\n"); | |
2107 | ||
8da9d2c8 | 2108 | ret = brcmf_sdio_txpkt_prep(bus, pktq, chan); |
b05e9254 FL |
2109 | if (ret) |
2110 | goto done; | |
5b435de0 | 2111 | |
38b0b0dd | 2112 | sdio_claim_host(bus->sdiodev->func[1]); |
a7cdd821 | 2113 | ret = brcmf_sdiod_send_pkt(bus->sdiodev, pktq); |
80969836 | 2114 | bus->sdcnt.f2txdata++; |
5b435de0 AS |
2115 | |
2116 | if (ret < 0) { | |
2117 | /* On failure, abort the command and terminate the frame */ | |
2118 | brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", | |
2119 | ret); | |
80969836 | 2120 | bus->sdcnt.tx_sderrs++; |
5b435de0 | 2121 | |
a39be27b AS |
2122 | brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2); |
2123 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, | |
2124 | SFC_WF_TERM, NULL); | |
80969836 | 2125 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
2126 | |
2127 | for (i = 0; i < 3; i++) { | |
2128 | u8 hi, lo; | |
a39be27b AS |
2129 | hi = brcmf_sdiod_regrb(bus->sdiodev, |
2130 | SBSDIO_FUNC1_WFRAMEBCHI, NULL); | |
2131 | lo = brcmf_sdiod_regrb(bus->sdiodev, | |
2132 | SBSDIO_FUNC1_WFRAMEBCLO, NULL); | |
80969836 | 2133 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
2134 | if ((hi == 0) && (lo == 0)) |
2135 | break; | |
2136 | } | |
5b435de0 | 2137 | } |
38b0b0dd | 2138 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2139 | |
2140 | done: | |
8da9d2c8 FL |
2141 | brcmf_sdio_txpkt_postp(bus, pktq); |
2142 | if (ret == 0) | |
2143 | bus->tx_seq = (bus->tx_seq + pktq->qlen) % SDPCM_SEQ_WRAP; | |
2144 | skb_queue_walk_safe(pktq, pkt_next, tmp) { | |
2145 | __skb_unlink(pkt_next, pktq); | |
2146 | brcmf_txcomplete(bus->sdiodev->dev, pkt_next, ret == 0); | |
2147 | } | |
5b435de0 AS |
2148 | return ret; |
2149 | } | |
2150 | ||
82d7f3c1 | 2151 | static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes) |
5b435de0 AS |
2152 | { |
2153 | struct sk_buff *pkt; | |
8da9d2c8 | 2154 | struct sk_buff_head pktq; |
5b435de0 | 2155 | u32 intstatus = 0; |
8da9d2c8 | 2156 | int ret = 0, prec_out, i; |
5b435de0 | 2157 | uint cnt = 0; |
8da9d2c8 | 2158 | u8 tx_prec_map, pkt_num; |
5b435de0 | 2159 | |
5b435de0 AS |
2160 | brcmf_dbg(TRACE, "Enter\n"); |
2161 | ||
2162 | tx_prec_map = ~bus->flowcontrol; | |
2163 | ||
2164 | /* Send frames until the limit or some other event */ | |
8da9d2c8 FL |
2165 | for (cnt = 0; (cnt < maxframes) && data_ok(bus);) { |
2166 | pkt_num = 1; | |
2167 | __skb_queue_head_init(&pktq); | |
2168 | if (bus->txglom) | |
2169 | pkt_num = min_t(u8, bus->tx_max - bus->tx_seq, | |
2170 | brcmf_sdio_txglomsz); | |
2171 | pkt_num = min_t(u32, pkt_num, | |
2172 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol)); | |
5b435de0 | 2173 | spin_lock_bh(&bus->txqlock); |
8da9d2c8 FL |
2174 | for (i = 0; i < pkt_num; i++) { |
2175 | pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, | |
2176 | &prec_out); | |
2177 | if (pkt == NULL) | |
2178 | break; | |
2179 | __skb_queue_tail(&pktq, pkt); | |
5b435de0 AS |
2180 | } |
2181 | spin_unlock_bh(&bus->txqlock); | |
8da9d2c8 FL |
2182 | if (i == 0) |
2183 | break; | |
5b435de0 | 2184 | |
82d7f3c1 | 2185 | ret = brcmf_sdio_txpkt(bus, &pktq, SDPCM_DATA_CHANNEL); |
8da9d2c8 | 2186 | cnt += i; |
5b435de0 AS |
2187 | |
2188 | /* In poll mode, need to check for other events */ | |
2189 | if (!bus->intr && cnt) { | |
2190 | /* Check device status, signal pending interrupt */ | |
38b0b0dd | 2191 | sdio_claim_host(bus->sdiodev->func[1]); |
5c15c23a FL |
2192 | ret = r_sdreg32(bus, &intstatus, |
2193 | offsetof(struct sdpcmd_regs, | |
2194 | intstatus)); | |
38b0b0dd | 2195 | sdio_release_host(bus->sdiodev->func[1]); |
80969836 | 2196 | bus->sdcnt.f2txdata++; |
5c15c23a | 2197 | if (ret != 0) |
5b435de0 AS |
2198 | break; |
2199 | if (intstatus & bus->hostintmask) | |
1d382273 | 2200 | atomic_set(&bus->ipend, 1); |
5b435de0 AS |
2201 | } |
2202 | } | |
2203 | ||
2204 | /* Deflow-control stack if needed */ | |
05dde977 | 2205 | if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) && |
c8bf3484 | 2206 | bus->txoff && (pktq_len(&bus->txq) < TXLOW)) { |
90d03ff7 HM |
2207 | bus->txoff = false; |
2208 | brcmf_txflowblock(bus->sdiodev->dev, false); | |
c8bf3484 | 2209 | } |
5b435de0 AS |
2210 | |
2211 | return cnt; | |
2212 | } | |
2213 | ||
82d7f3c1 | 2214 | static void brcmf_sdio_bus_stop(struct device *dev) |
a9ffda88 FL |
2215 | { |
2216 | u32 local_hostintmask; | |
2217 | u8 saveclk; | |
a9ffda88 FL |
2218 | int err; |
2219 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
0a332e46 | 2220 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
a9ffda88 FL |
2221 | struct brcmf_sdio *bus = sdiodev->bus; |
2222 | ||
2223 | brcmf_dbg(TRACE, "Enter\n"); | |
2224 | ||
2225 | if (bus->watchdog_tsk) { | |
2226 | send_sig(SIGTERM, bus->watchdog_tsk, 1); | |
2227 | kthread_stop(bus->watchdog_tsk); | |
2228 | bus->watchdog_tsk = NULL; | |
2229 | } | |
2230 | ||
38b0b0dd | 2231 | sdio_claim_host(bus->sdiodev->func[1]); |
a9ffda88 | 2232 | |
a9ffda88 | 2233 | /* Enable clock for device interrupts */ |
82d7f3c1 | 2234 | brcmf_sdio_bus_sleep(bus, false, false); |
a9ffda88 FL |
2235 | |
2236 | /* Disable and clear interrupts at the chip level also */ | |
58692750 | 2237 | w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask)); |
a9ffda88 FL |
2238 | local_hostintmask = bus->hostintmask; |
2239 | bus->hostintmask = 0; | |
2240 | ||
2241 | /* Change our idea of bus state */ | |
2242 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; | |
2243 | ||
2244 | /* Force clocks on backplane to be sure F2 interrupt propagates */ | |
a39be27b AS |
2245 | saveclk = brcmf_sdiod_regrb(bus->sdiodev, |
2246 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
a9ffda88 | 2247 | if (!err) { |
a39be27b AS |
2248 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
2249 | (saveclk | SBSDIO_FORCE_HT), &err); | |
a9ffda88 FL |
2250 | } |
2251 | if (err) | |
5e8149f5 | 2252 | brcmf_err("Failed to force clock for F2: err %d\n", err); |
a9ffda88 FL |
2253 | |
2254 | /* Turn off the bus (F2), free any pending packets */ | |
2255 | brcmf_dbg(INTR, "disable SDIO interrupts\n"); | |
71370eb8 | 2256 | sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]); |
a9ffda88 FL |
2257 | |
2258 | /* Clear any pending interrupts now that F2 is disabled */ | |
2259 | w_sdreg32(bus, local_hostintmask, | |
58692750 | 2260 | offsetof(struct sdpcmd_regs, intstatus)); |
a9ffda88 FL |
2261 | |
2262 | /* Turn off the backplane clock (only) */ | |
82d7f3c1 | 2263 | brcmf_sdio_clkctl(bus, CLK_SDONLY, false); |
38b0b0dd | 2264 | sdio_release_host(bus->sdiodev->func[1]); |
a9ffda88 FL |
2265 | |
2266 | /* Clear the data packet queues */ | |
2267 | brcmu_pktq_flush(&bus->txq, true, NULL, NULL); | |
2268 | ||
2269 | /* Clear any held glomming stuff */ | |
2270 | if (bus->glomd) | |
2271 | brcmu_pkt_buf_free_skb(bus->glomd); | |
82d7f3c1 | 2272 | brcmf_sdio_free_glom(bus); |
a9ffda88 FL |
2273 | |
2274 | /* Clear rx control and wake any waiters */ | |
dd43a01c | 2275 | spin_lock_bh(&bus->rxctl_lock); |
a9ffda88 | 2276 | bus->rxlen = 0; |
dd43a01c | 2277 | spin_unlock_bh(&bus->rxctl_lock); |
82d7f3c1 | 2278 | brcmf_sdio_dcmd_resp_wake(bus); |
a9ffda88 FL |
2279 | |
2280 | /* Reset some F2 state stuff */ | |
2281 | bus->rxskip = false; | |
2282 | bus->tx_seq = bus->rx_seq = 0; | |
a9ffda88 FL |
2283 | } |
2284 | ||
82d7f3c1 | 2285 | static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus) |
ba89bf19 FL |
2286 | { |
2287 | unsigned long flags; | |
2288 | ||
668761ac HM |
2289 | if (bus->sdiodev->oob_irq_requested) { |
2290 | spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags); | |
2291 | if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) { | |
2292 | enable_irq(bus->sdiodev->pdata->oob_irq_nr); | |
2293 | bus->sdiodev->irq_en = true; | |
2294 | } | |
2295 | spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags); | |
ba89bf19 | 2296 | } |
ba89bf19 | 2297 | } |
ba89bf19 | 2298 | |
4531603a FL |
2299 | static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus) |
2300 | { | |
2301 | u8 idx; | |
2302 | u32 addr; | |
2303 | unsigned long val; | |
2304 | int n, ret; | |
2305 | ||
2306 | idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); | |
2307 | addr = bus->ci->c_inf[idx].base + | |
2308 | offsetof(struct sdpcmd_regs, intstatus); | |
2309 | ||
a39be27b | 2310 | val = brcmf_sdiod_regrl(bus->sdiodev, addr, &ret); |
4531603a FL |
2311 | bus->sdcnt.f1regdata++; |
2312 | if (ret != 0) | |
2313 | val = 0; | |
2314 | ||
2315 | val &= bus->hostintmask; | |
2316 | atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE)); | |
2317 | ||
2318 | /* Clear interrupts */ | |
2319 | if (val) { | |
a39be27b | 2320 | brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret); |
4531603a FL |
2321 | bus->sdcnt.f1regdata++; |
2322 | } | |
2323 | ||
2324 | if (ret) { | |
2325 | atomic_set(&bus->intstatus, 0); | |
2326 | } else if (val) { | |
2327 | for_each_set_bit(n, &val, 32) | |
2328 | set_bit(n, (unsigned long *)&bus->intstatus.counter); | |
2329 | } | |
2330 | ||
2331 | return ret; | |
2332 | } | |
2333 | ||
82d7f3c1 | 2334 | static void brcmf_sdio_dpc(struct brcmf_sdio *bus) |
5b435de0 | 2335 | { |
4531603a FL |
2336 | u32 newstatus = 0; |
2337 | unsigned long intstatus; | |
5b435de0 AS |
2338 | uint rxlimit = bus->rxbound; /* Rx frames to read before resched */ |
2339 | uint txlimit = bus->txbound; /* Tx frames to send before resched */ | |
2340 | uint framecnt = 0; /* Temporary counter of tx/rx frames */ | |
4531603a | 2341 | int err = 0, n; |
5b435de0 AS |
2342 | |
2343 | brcmf_dbg(TRACE, "Enter\n"); | |
2344 | ||
38b0b0dd | 2345 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2346 | |
2347 | /* If waiting for HTAVAIL, check status */ | |
4a3da990 | 2348 | if (!bus->sr_enabled && bus->clkstate == CLK_PENDING) { |
5b435de0 AS |
2349 | u8 clkctl, devctl = 0; |
2350 | ||
8ae74654 | 2351 | #ifdef DEBUG |
5b435de0 | 2352 | /* Check for inconsistent device control */ |
a39be27b AS |
2353 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
2354 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 2355 | if (err) { |
5e8149f5 | 2356 | brcmf_err("error reading DEVCTL: %d\n", err); |
712ac5b3 | 2357 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 | 2358 | } |
8ae74654 | 2359 | #endif /* DEBUG */ |
5b435de0 AS |
2360 | |
2361 | /* Read CSR, if clock on switch to AVAIL, else ignore */ | |
a39be27b AS |
2362 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
2363 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 2364 | if (err) { |
5e8149f5 | 2365 | brcmf_err("error reading CSR: %d\n", |
5b435de0 | 2366 | err); |
712ac5b3 | 2367 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
2368 | } |
2369 | ||
c3203374 | 2370 | brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n", |
5b435de0 AS |
2371 | devctl, clkctl); |
2372 | ||
2373 | if (SBSDIO_HTAV(clkctl)) { | |
a39be27b AS |
2374 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
2375 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 2376 | if (err) { |
5e8149f5 | 2377 | brcmf_err("error reading DEVCTL: %d\n", |
5b435de0 | 2378 | err); |
712ac5b3 | 2379 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
2380 | } |
2381 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; | |
a39be27b AS |
2382 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
2383 | devctl, &err); | |
5b435de0 | 2384 | if (err) { |
5e8149f5 | 2385 | brcmf_err("error writing DEVCTL: %d\n", |
5b435de0 | 2386 | err); |
712ac5b3 | 2387 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
2388 | } |
2389 | bus->clkstate = CLK_AVAIL; | |
5b435de0 AS |
2390 | } |
2391 | } | |
2392 | ||
5b435de0 | 2393 | /* Make sure backplane clock is on */ |
82d7f3c1 | 2394 | brcmf_sdio_bus_sleep(bus, false, true); |
5b435de0 AS |
2395 | |
2396 | /* Pending interrupt indicates new device status */ | |
1d382273 FL |
2397 | if (atomic_read(&bus->ipend) > 0) { |
2398 | atomic_set(&bus->ipend, 0); | |
4531603a | 2399 | err = brcmf_sdio_intr_rstatus(bus); |
5b435de0 AS |
2400 | } |
2401 | ||
4531603a FL |
2402 | /* Start with leftover status bits */ |
2403 | intstatus = atomic_xchg(&bus->intstatus, 0); | |
5b435de0 AS |
2404 | |
2405 | /* Handle flow-control change: read new state in case our ack | |
2406 | * crossed another change interrupt. If change still set, assume | |
2407 | * FC ON for safety, let next loop through do the debounce. | |
2408 | */ | |
2409 | if (intstatus & I_HMB_FC_CHANGE) { | |
2410 | intstatus &= ~I_HMB_FC_CHANGE; | |
5c15c23a FL |
2411 | err = w_sdreg32(bus, I_HMB_FC_CHANGE, |
2412 | offsetof(struct sdpcmd_regs, intstatus)); | |
5b435de0 | 2413 | |
5c15c23a FL |
2414 | err = r_sdreg32(bus, &newstatus, |
2415 | offsetof(struct sdpcmd_regs, intstatus)); | |
80969836 | 2416 | bus->sdcnt.f1regdata += 2; |
4531603a FL |
2417 | atomic_set(&bus->fcstate, |
2418 | !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE))); | |
5b435de0 AS |
2419 | intstatus |= (newstatus & bus->hostintmask); |
2420 | } | |
2421 | ||
2422 | /* Handle host mailbox indication */ | |
2423 | if (intstatus & I_HMB_HOST_INT) { | |
2424 | intstatus &= ~I_HMB_HOST_INT; | |
82d7f3c1 | 2425 | intstatus |= brcmf_sdio_hostmail(bus); |
5b435de0 AS |
2426 | } |
2427 | ||
38b0b0dd | 2428 | sdio_release_host(bus->sdiodev->func[1]); |
7cdf57d3 | 2429 | |
5b435de0 AS |
2430 | /* Generally don't ask for these, can get CRC errors... */ |
2431 | if (intstatus & I_WR_OOSYNC) { | |
5e8149f5 | 2432 | brcmf_err("Dongle reports WR_OOSYNC\n"); |
5b435de0 AS |
2433 | intstatus &= ~I_WR_OOSYNC; |
2434 | } | |
2435 | ||
2436 | if (intstatus & I_RD_OOSYNC) { | |
5e8149f5 | 2437 | brcmf_err("Dongle reports RD_OOSYNC\n"); |
5b435de0 AS |
2438 | intstatus &= ~I_RD_OOSYNC; |
2439 | } | |
2440 | ||
2441 | if (intstatus & I_SBINT) { | |
5e8149f5 | 2442 | brcmf_err("Dongle reports SBINT\n"); |
5b435de0 AS |
2443 | intstatus &= ~I_SBINT; |
2444 | } | |
2445 | ||
2446 | /* Would be active due to wake-wlan in gSPI */ | |
2447 | if (intstatus & I_CHIPACTIVE) { | |
2448 | brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n"); | |
2449 | intstatus &= ~I_CHIPACTIVE; | |
2450 | } | |
2451 | ||
2452 | /* Ignore frame indications if rxskip is set */ | |
2453 | if (bus->rxskip) | |
2454 | intstatus &= ~I_HMB_FRAME_IND; | |
2455 | ||
2456 | /* On frame indication, read available frames */ | |
03d5c360 | 2457 | if (PKT_AVAILABLE() && bus->clkstate == CLK_AVAIL) { |
4754fcee FL |
2458 | framecnt = brcmf_sdio_readframes(bus, rxlimit); |
2459 | if (!bus->rxpending) | |
5b435de0 AS |
2460 | intstatus &= ~I_HMB_FRAME_IND; |
2461 | rxlimit -= min(framecnt, rxlimit); | |
2462 | } | |
2463 | ||
2464 | /* Keep still-pending events for next scheduling */ | |
4531603a FL |
2465 | if (intstatus) { |
2466 | for_each_set_bit(n, &intstatus, 32) | |
2467 | set_bit(n, (unsigned long *)&bus->intstatus.counter); | |
2468 | } | |
5b435de0 | 2469 | |
82d7f3c1 | 2470 | brcmf_sdio_clrintr(bus); |
ba89bf19 | 2471 | |
5b435de0 AS |
2472 | if (data_ok(bus) && bus->ctrl_frame_stat && |
2473 | (bus->clkstate == CLK_AVAIL)) { | |
03d5c360 | 2474 | int i; |
5b435de0 | 2475 | |
38b0b0dd | 2476 | sdio_claim_host(bus->sdiodev->func[1]); |
a7cdd821 | 2477 | err = brcmf_sdiod_send_buf(bus->sdiodev, bus->ctrl_frame_buf, |
a39be27b | 2478 | (u32)bus->ctrl_frame_len); |
5b435de0 | 2479 | |
03d5c360 | 2480 | if (err < 0) { |
5b435de0 AS |
2481 | /* On failure, abort the command and |
2482 | terminate the frame */ | |
2483 | brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", | |
03d5c360 | 2484 | err); |
80969836 | 2485 | bus->sdcnt.tx_sderrs++; |
5b435de0 | 2486 | |
a39be27b | 2487 | brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2); |
5b435de0 | 2488 | |
a39be27b AS |
2489 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
2490 | SFC_WF_TERM, &err); | |
80969836 | 2491 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
2492 | |
2493 | for (i = 0; i < 3; i++) { | |
2494 | u8 hi, lo; | |
a39be27b AS |
2495 | hi = brcmf_sdiod_regrb(bus->sdiodev, |
2496 | SBSDIO_FUNC1_WFRAMEBCHI, | |
2497 | &err); | |
2498 | lo = brcmf_sdiod_regrb(bus->sdiodev, | |
2499 | SBSDIO_FUNC1_WFRAMEBCLO, | |
2500 | &err); | |
80969836 | 2501 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
2502 | if ((hi == 0) && (lo == 0)) |
2503 | break; | |
2504 | } | |
2505 | ||
03d5c360 | 2506 | } else { |
6bc52319 | 2507 | bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP; |
03d5c360 | 2508 | } |
38b0b0dd | 2509 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 2510 | bus->ctrl_frame_stat = false; |
82d7f3c1 | 2511 | brcmf_sdio_wait_event_wakeup(bus); |
5b435de0 AS |
2512 | } |
2513 | /* Send queued frames (limit 1 if rx may still be pending) */ | |
4531603a | 2514 | else if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) && |
5b435de0 AS |
2515 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit |
2516 | && data_ok(bus)) { | |
4754fcee FL |
2517 | framecnt = bus->rxpending ? min(txlimit, bus->txminmax) : |
2518 | txlimit; | |
82d7f3c1 | 2519 | framecnt = brcmf_sdio_sendfromq(bus, framecnt); |
5b435de0 AS |
2520 | txlimit -= framecnt; |
2521 | } | |
2522 | ||
5c15c23a | 2523 | if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) || (err != 0)) { |
5e8149f5 | 2524 | brcmf_err("failed backplane access over SDIO, halting operation\n"); |
712ac5b3 | 2525 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
4531603a FL |
2526 | atomic_set(&bus->intstatus, 0); |
2527 | } else if (atomic_read(&bus->intstatus) || | |
2528 | atomic_read(&bus->ipend) > 0 || | |
2529 | (!atomic_read(&bus->fcstate) && | |
2530 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && | |
2531 | data_ok(bus)) || PKT_AVAILABLE()) { | |
fccfe930 | 2532 | atomic_inc(&bus->dpc_tskcnt); |
5b435de0 AS |
2533 | } |
2534 | ||
5b435de0 AS |
2535 | /* If we're done for now, turn off clock request. */ |
2536 | if ((bus->clkstate != CLK_PENDING) | |
2537 | && bus->idletime == BRCMF_IDLE_IMMEDIATE) { | |
2538 | bus->activity = false; | |
4a3da990 | 2539 | brcmf_dbg(SDIO, "idle state\n"); |
38b0b0dd | 2540 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 2541 | brcmf_sdio_bus_sleep(bus, true, false); |
38b0b0dd | 2542 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 2543 | } |
5b435de0 AS |
2544 | } |
2545 | ||
82d7f3c1 | 2546 | static struct pktq *brcmf_sdio_bus_gettxq(struct device *dev) |
e2432b67 AS |
2547 | { |
2548 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
2549 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
2550 | struct brcmf_sdio *bus = sdiodev->bus; | |
2551 | ||
2552 | return &bus->txq; | |
2553 | } | |
2554 | ||
82d7f3c1 | 2555 | static int brcmf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt) |
5b435de0 AS |
2556 | { |
2557 | int ret = -EBADE; | |
2558 | uint datalen, prec; | |
bf347bb9 | 2559 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 2560 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
bf347bb9 | 2561 | struct brcmf_sdio *bus = sdiodev->bus; |
4061f895 | 2562 | ulong flags; |
5b435de0 AS |
2563 | |
2564 | brcmf_dbg(TRACE, "Enter\n"); | |
2565 | ||
2566 | datalen = pkt->len; | |
2567 | ||
2568 | /* Add space for the header */ | |
706478cb | 2569 | skb_push(pkt, bus->tx_hdrlen); |
5b435de0 AS |
2570 | /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */ |
2571 | ||
2572 | prec = prio2prec((pkt->priority & PRIOMASK)); | |
2573 | ||
2574 | /* Check for existing queue, current flow-control, | |
2575 | pending event, or pending clock */ | |
2576 | brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq)); | |
80969836 | 2577 | bus->sdcnt.fcqueued++; |
5b435de0 AS |
2578 | |
2579 | /* Priority based enq */ | |
4061f895 | 2580 | spin_lock_irqsave(&bus->txqlock, flags); |
23677ce3 | 2581 | if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) { |
706478cb | 2582 | skb_pull(pkt, bus->tx_hdrlen); |
5e8149f5 | 2583 | brcmf_err("out of bus->txq !!!\n"); |
5b435de0 AS |
2584 | ret = -ENOSR; |
2585 | } else { | |
2586 | ret = 0; | |
2587 | } | |
5b435de0 | 2588 | |
c8bf3484 | 2589 | if (pktq_len(&bus->txq) >= TXHI) { |
90d03ff7 HM |
2590 | bus->txoff = true; |
2591 | brcmf_txflowblock(bus->sdiodev->dev, true); | |
c8bf3484 | 2592 | } |
4061f895 | 2593 | spin_unlock_irqrestore(&bus->txqlock, flags); |
5b435de0 | 2594 | |
8ae74654 | 2595 | #ifdef DEBUG |
5b435de0 AS |
2596 | if (pktq_plen(&bus->txq, prec) > qcount[prec]) |
2597 | qcount[prec] = pktq_plen(&bus->txq, prec); | |
2598 | #endif | |
f1e68c2e | 2599 | |
fccfe930 AS |
2600 | if (atomic_read(&bus->dpc_tskcnt) == 0) { |
2601 | atomic_inc(&bus->dpc_tskcnt); | |
f1e68c2e | 2602 | queue_work(bus->brcmf_wq, &bus->datawork); |
5b435de0 AS |
2603 | } |
2604 | ||
2605 | return ret; | |
2606 | } | |
2607 | ||
8ae74654 | 2608 | #ifdef DEBUG |
5b435de0 AS |
2609 | #define CONSOLE_LINE_MAX 192 |
2610 | ||
82d7f3c1 | 2611 | static int brcmf_sdio_readconsole(struct brcmf_sdio *bus) |
5b435de0 AS |
2612 | { |
2613 | struct brcmf_console *c = &bus->console; | |
2614 | u8 line[CONSOLE_LINE_MAX], ch; | |
2615 | u32 n, idx, addr; | |
2616 | int rv; | |
2617 | ||
2618 | /* Don't do anything until FWREADY updates console address */ | |
2619 | if (bus->console_addr == 0) | |
2620 | return 0; | |
2621 | ||
2622 | /* Read console log struct */ | |
2623 | addr = bus->console_addr + offsetof(struct rte_console, log_le); | |
a39be27b AS |
2624 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&c->log_le, |
2625 | sizeof(c->log_le)); | |
5b435de0 AS |
2626 | if (rv < 0) |
2627 | return rv; | |
2628 | ||
2629 | /* Allocate console buffer (one time only) */ | |
2630 | if (c->buf == NULL) { | |
2631 | c->bufsize = le32_to_cpu(c->log_le.buf_size); | |
2632 | c->buf = kmalloc(c->bufsize, GFP_ATOMIC); | |
2633 | if (c->buf == NULL) | |
2634 | return -ENOMEM; | |
2635 | } | |
2636 | ||
2637 | idx = le32_to_cpu(c->log_le.idx); | |
2638 | ||
2639 | /* Protect against corrupt value */ | |
2640 | if (idx > c->bufsize) | |
2641 | return -EBADE; | |
2642 | ||
2643 | /* Skip reading the console buffer if the index pointer | |
2644 | has not moved */ | |
2645 | if (idx == c->last) | |
2646 | return 0; | |
2647 | ||
2648 | /* Read the console buffer */ | |
2649 | addr = le32_to_cpu(c->log_le.buf); | |
a39be27b | 2650 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, c->buf, c->bufsize); |
5b435de0 AS |
2651 | if (rv < 0) |
2652 | return rv; | |
2653 | ||
2654 | while (c->last != idx) { | |
2655 | for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { | |
2656 | if (c->last == idx) { | |
2657 | /* This would output a partial line. | |
2658 | * Instead, back up | |
2659 | * the buffer pointer and output this | |
2660 | * line next time around. | |
2661 | */ | |
2662 | if (c->last >= n) | |
2663 | c->last -= n; | |
2664 | else | |
2665 | c->last = c->bufsize - n; | |
2666 | goto break2; | |
2667 | } | |
2668 | ch = c->buf[c->last]; | |
2669 | c->last = (c->last + 1) % c->bufsize; | |
2670 | if (ch == '\n') | |
2671 | break; | |
2672 | line[n] = ch; | |
2673 | } | |
2674 | ||
2675 | if (n > 0) { | |
2676 | if (line[n - 1] == '\r') | |
2677 | n--; | |
2678 | line[n] = 0; | |
18aad4f8 | 2679 | pr_debug("CONSOLE: %s\n", line); |
5b435de0 AS |
2680 | } |
2681 | } | |
2682 | break2: | |
2683 | ||
2684 | return 0; | |
2685 | } | |
8ae74654 | 2686 | #endif /* DEBUG */ |
5b435de0 | 2687 | |
82d7f3c1 | 2688 | static int brcmf_sdio_tx_frame(struct brcmf_sdio *bus, u8 *frame, u16 len) |
5b435de0 AS |
2689 | { |
2690 | int i; | |
2691 | int ret; | |
2692 | ||
2693 | bus->ctrl_frame_stat = false; | |
a7cdd821 | 2694 | ret = brcmf_sdiod_send_buf(bus->sdiodev, frame, len); |
5b435de0 AS |
2695 | |
2696 | if (ret < 0) { | |
2697 | /* On failure, abort the command and terminate the frame */ | |
2698 | brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n", | |
2699 | ret); | |
80969836 | 2700 | bus->sdcnt.tx_sderrs++; |
5b435de0 | 2701 | |
a39be27b | 2702 | brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2); |
5b435de0 | 2703 | |
a39be27b AS |
2704 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
2705 | SFC_WF_TERM, NULL); | |
80969836 | 2706 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
2707 | |
2708 | for (i = 0; i < 3; i++) { | |
2709 | u8 hi, lo; | |
a39be27b AS |
2710 | hi = brcmf_sdiod_regrb(bus->sdiodev, |
2711 | SBSDIO_FUNC1_WFRAMEBCHI, NULL); | |
2712 | lo = brcmf_sdiod_regrb(bus->sdiodev, | |
2713 | SBSDIO_FUNC1_WFRAMEBCLO, NULL); | |
80969836 | 2714 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
2715 | if (hi == 0 && lo == 0) |
2716 | break; | |
2717 | } | |
2718 | return ret; | |
2719 | } | |
2720 | ||
6bc52319 | 2721 | bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP; |
5b435de0 AS |
2722 | |
2723 | return ret; | |
2724 | } | |
2725 | ||
fcf094f4 | 2726 | static int |
82d7f3c1 | 2727 | brcmf_sdio_bus_txctl(struct device *dev, unsigned char *msg, uint msglen) |
5b435de0 AS |
2728 | { |
2729 | u8 *frame; | |
8da9d2c8 | 2730 | u16 len, pad; |
5b435de0 AS |
2731 | uint retries = 0; |
2732 | u8 doff = 0; | |
2733 | int ret = -1; | |
47a1ce78 | 2734 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 2735 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
47a1ce78 | 2736 | struct brcmf_sdio *bus = sdiodev->bus; |
6bc52319 | 2737 | struct brcmf_sdio_hdrinfo hd_info = {0}; |
5b435de0 AS |
2738 | |
2739 | brcmf_dbg(TRACE, "Enter\n"); | |
2740 | ||
2741 | /* Back the pointer to make a room for bus header */ | |
706478cb FL |
2742 | frame = msg - bus->tx_hdrlen; |
2743 | len = (msglen += bus->tx_hdrlen); | |
5b435de0 AS |
2744 | |
2745 | /* Add alignment padding (optional for ctl frames) */ | |
9b2d2f2a | 2746 | doff = ((unsigned long)frame % bus->head_align); |
5b435de0 AS |
2747 | if (doff) { |
2748 | frame -= doff; | |
2749 | len += doff; | |
2750 | msglen += doff; | |
706478cb | 2751 | memset(frame, 0, doff + bus->tx_hdrlen); |
5b435de0 | 2752 | } |
9b2d2f2a | 2753 | /* precondition: doff < bus->head_align */ |
706478cb | 2754 | doff += bus->tx_hdrlen; |
5b435de0 AS |
2755 | |
2756 | /* Round send length to next SDIO block */ | |
8da9d2c8 | 2757 | pad = 0; |
5b435de0 | 2758 | if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { |
8da9d2c8 FL |
2759 | pad = bus->blocksize - (len % bus->blocksize); |
2760 | if ((pad > bus->roundup) || (pad >= bus->blocksize)) | |
2761 | pad = 0; | |
9b2d2f2a AS |
2762 | } else if (len % bus->head_align) { |
2763 | pad = bus->head_align - (len % bus->head_align); | |
5b435de0 | 2764 | } |
8da9d2c8 | 2765 | len += pad; |
5b435de0 | 2766 | |
5b435de0 AS |
2767 | /* precondition: IS_ALIGNED((unsigned long)frame, 2) */ |
2768 | ||
5b435de0 | 2769 | /* Make sure backplane clock is on */ |
38b0b0dd | 2770 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 2771 | brcmf_sdio_bus_sleep(bus, false, false); |
38b0b0dd | 2772 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 2773 | |
6bc52319 FL |
2774 | hd_info.len = (u16)msglen; |
2775 | hd_info.channel = SDPCM_CONTROL_CHANNEL; | |
2776 | hd_info.dat_offset = doff; | |
8da9d2c8 | 2777 | hd_info.seq_num = bus->tx_seq; |
9b2d2f2a AS |
2778 | hd_info.lastfrm = true; |
2779 | hd_info.tail_pad = pad; | |
6bc52319 | 2780 | brcmf_sdio_hdpack(bus, frame, &hd_info); |
5b435de0 | 2781 | |
8da9d2c8 FL |
2782 | if (bus->txglom) |
2783 | brcmf_sdio_update_hwhdr(frame, len); | |
2784 | ||
5b435de0 AS |
2785 | if (!data_ok(bus)) { |
2786 | brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n", | |
2787 | bus->tx_max, bus->tx_seq); | |
2788 | bus->ctrl_frame_stat = true; | |
2789 | /* Send from dpc */ | |
2790 | bus->ctrl_frame_buf = frame; | |
2791 | bus->ctrl_frame_len = len; | |
2792 | ||
fd67dc83 FL |
2793 | wait_event_interruptible_timeout(bus->ctrl_wait, |
2794 | !bus->ctrl_frame_stat, | |
2795 | msecs_to_jiffies(2000)); | |
5b435de0 | 2796 | |
23677ce3 | 2797 | if (!bus->ctrl_frame_stat) { |
c3203374 | 2798 | brcmf_dbg(SDIO, "ctrl_frame_stat == false\n"); |
5b435de0 AS |
2799 | ret = 0; |
2800 | } else { | |
c3203374 | 2801 | brcmf_dbg(SDIO, "ctrl_frame_stat == true\n"); |
5b435de0 AS |
2802 | ret = -1; |
2803 | } | |
2804 | } | |
2805 | ||
2806 | if (ret == -1) { | |
1e023829 JP |
2807 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), |
2808 | frame, len, "Tx Frame:\n"); | |
2809 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) && | |
2810 | BRCMF_HDRS_ON(), | |
2811 | frame, min_t(u16, len, 16), "TxHdr:\n"); | |
5b435de0 AS |
2812 | |
2813 | do { | |
38b0b0dd | 2814 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 2815 | ret = brcmf_sdio_tx_frame(bus, frame, len); |
38b0b0dd | 2816 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2817 | } while (ret < 0 && retries++ < TXRETRIES); |
2818 | } | |
2819 | ||
f1e68c2e | 2820 | if ((bus->idletime == BRCMF_IDLE_IMMEDIATE) && |
fccfe930 | 2821 | atomic_read(&bus->dpc_tskcnt) == 0) { |
5b435de0 | 2822 | bus->activity = false; |
38b0b0dd | 2823 | sdio_claim_host(bus->sdiodev->func[1]); |
4a3da990 | 2824 | brcmf_dbg(INFO, "idle\n"); |
82d7f3c1 | 2825 | brcmf_sdio_clkctl(bus, CLK_NONE, true); |
38b0b0dd | 2826 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2827 | } |
2828 | ||
5b435de0 | 2829 | if (ret) |
80969836 | 2830 | bus->sdcnt.tx_ctlerrs++; |
5b435de0 | 2831 | else |
80969836 | 2832 | bus->sdcnt.tx_ctlpkts++; |
5b435de0 AS |
2833 | |
2834 | return ret ? -EIO : 0; | |
2835 | } | |
2836 | ||
80969836 | 2837 | #ifdef DEBUG |
4fc0d016 AS |
2838 | static inline bool brcmf_sdio_valid_shared_address(u32 addr) |
2839 | { | |
2840 | return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)); | |
2841 | } | |
2842 | ||
2843 | static int brcmf_sdio_readshared(struct brcmf_sdio *bus, | |
2844 | struct sdpcm_shared *sh) | |
2845 | { | |
2846 | u32 addr; | |
2847 | int rv; | |
2848 | u32 shaddr = 0; | |
2849 | struct sdpcm_shared_le sh_le; | |
2850 | __le32 addr_le; | |
2851 | ||
1640f28f | 2852 | shaddr = bus->ci->rambase + bus->ramsize - 4; |
4fc0d016 AS |
2853 | |
2854 | /* | |
2855 | * Read last word in socram to determine | |
2856 | * address of sdpcm_shared structure | |
2857 | */ | |
38b0b0dd | 2858 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 2859 | brcmf_sdio_bus_sleep(bus, false, false); |
a39be27b | 2860 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4); |
b55de97f | 2861 | sdio_release_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
2862 | if (rv < 0) |
2863 | return rv; | |
2864 | ||
2865 | addr = le32_to_cpu(addr_le); | |
2866 | ||
c3203374 | 2867 | brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr); |
4fc0d016 AS |
2868 | |
2869 | /* | |
2870 | * Check if addr is valid. | |
2871 | * NVRAM length at the end of memory should have been overwritten. | |
2872 | */ | |
2873 | if (!brcmf_sdio_valid_shared_address(addr)) { | |
5e8149f5 | 2874 | brcmf_err("invalid sdpcm_shared address 0x%08X\n", |
4fc0d016 AS |
2875 | addr); |
2876 | return -EINVAL; | |
2877 | } | |
2878 | ||
2879 | /* Read hndrte_shared structure */ | |
a39be27b AS |
2880 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le, |
2881 | sizeof(struct sdpcm_shared_le)); | |
4fc0d016 AS |
2882 | if (rv < 0) |
2883 | return rv; | |
2884 | ||
2885 | /* Endianness */ | |
2886 | sh->flags = le32_to_cpu(sh_le.flags); | |
2887 | sh->trap_addr = le32_to_cpu(sh_le.trap_addr); | |
2888 | sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr); | |
2889 | sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr); | |
2890 | sh->assert_line = le32_to_cpu(sh_le.assert_line); | |
2891 | sh->console_addr = le32_to_cpu(sh_le.console_addr); | |
2892 | sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr); | |
2893 | ||
86dcd937 PH |
2894 | if ((sh->flags & SDPCM_SHARED_VERSION_MASK) > SDPCM_SHARED_VERSION) { |
2895 | brcmf_err("sdpcm shared version unsupported: dhd %d dongle %d\n", | |
4fc0d016 AS |
2896 | SDPCM_SHARED_VERSION, |
2897 | sh->flags & SDPCM_SHARED_VERSION_MASK); | |
2898 | return -EPROTO; | |
2899 | } | |
2900 | ||
2901 | return 0; | |
2902 | } | |
2903 | ||
2904 | static int brcmf_sdio_dump_console(struct brcmf_sdio *bus, | |
2905 | struct sdpcm_shared *sh, char __user *data, | |
2906 | size_t count) | |
2907 | { | |
2908 | u32 addr, console_ptr, console_size, console_index; | |
2909 | char *conbuf = NULL; | |
2910 | __le32 sh_val; | |
2911 | int rv; | |
2912 | loff_t pos = 0; | |
2913 | int nbytes = 0; | |
2914 | ||
2915 | /* obtain console information from device memory */ | |
2916 | addr = sh->console_addr + offsetof(struct rte_console, log_le); | |
a39be27b AS |
2917 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, |
2918 | (u8 *)&sh_val, sizeof(u32)); | |
4fc0d016 AS |
2919 | if (rv < 0) |
2920 | return rv; | |
2921 | console_ptr = le32_to_cpu(sh_val); | |
2922 | ||
2923 | addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size); | |
a39be27b AS |
2924 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, |
2925 | (u8 *)&sh_val, sizeof(u32)); | |
4fc0d016 AS |
2926 | if (rv < 0) |
2927 | return rv; | |
2928 | console_size = le32_to_cpu(sh_val); | |
2929 | ||
2930 | addr = sh->console_addr + offsetof(struct rte_console, log_le.idx); | |
a39be27b AS |
2931 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, |
2932 | (u8 *)&sh_val, sizeof(u32)); | |
4fc0d016 AS |
2933 | if (rv < 0) |
2934 | return rv; | |
2935 | console_index = le32_to_cpu(sh_val); | |
2936 | ||
2937 | /* allocate buffer for console data */ | |
2938 | if (console_size <= CONSOLE_BUFFER_MAX) | |
2939 | conbuf = vzalloc(console_size+1); | |
2940 | ||
2941 | if (!conbuf) | |
2942 | return -ENOMEM; | |
2943 | ||
2944 | /* obtain the console data from device */ | |
2945 | conbuf[console_size] = '\0'; | |
a39be27b AS |
2946 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, console_ptr, (u8 *)conbuf, |
2947 | console_size); | |
4fc0d016 AS |
2948 | if (rv < 0) |
2949 | goto done; | |
2950 | ||
2951 | rv = simple_read_from_buffer(data, count, &pos, | |
2952 | conbuf + console_index, | |
2953 | console_size - console_index); | |
2954 | if (rv < 0) | |
2955 | goto done; | |
2956 | ||
2957 | nbytes = rv; | |
2958 | if (console_index > 0) { | |
2959 | pos = 0; | |
2960 | rv = simple_read_from_buffer(data+nbytes, count, &pos, | |
2961 | conbuf, console_index - 1); | |
2962 | if (rv < 0) | |
2963 | goto done; | |
2964 | rv += nbytes; | |
2965 | } | |
2966 | done: | |
2967 | vfree(conbuf); | |
2968 | return rv; | |
2969 | } | |
2970 | ||
2971 | static int brcmf_sdio_trap_info(struct brcmf_sdio *bus, struct sdpcm_shared *sh, | |
2972 | char __user *data, size_t count) | |
2973 | { | |
2974 | int error, res; | |
2975 | char buf[350]; | |
2976 | struct brcmf_trap_info tr; | |
4fc0d016 AS |
2977 | loff_t pos = 0; |
2978 | ||
baa9e609 PH |
2979 | if ((sh->flags & SDPCM_SHARED_TRAP) == 0) { |
2980 | brcmf_dbg(INFO, "no trap in firmware\n"); | |
4fc0d016 | 2981 | return 0; |
baa9e609 | 2982 | } |
4fc0d016 | 2983 | |
a39be27b AS |
2984 | error = brcmf_sdiod_ramrw(bus->sdiodev, false, sh->trap_addr, (u8 *)&tr, |
2985 | sizeof(struct brcmf_trap_info)); | |
4fc0d016 AS |
2986 | if (error < 0) |
2987 | return error; | |
2988 | ||
4fc0d016 AS |
2989 | res = scnprintf(buf, sizeof(buf), |
2990 | "dongle trap info: type 0x%x @ epc 0x%08x\n" | |
2991 | " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n" | |
2992 | " lr 0x%08x pc 0x%08x offset 0x%x\n" | |
2993 | " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n" | |
2994 | " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n", | |
2995 | le32_to_cpu(tr.type), le32_to_cpu(tr.epc), | |
2996 | le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr), | |
2997 | le32_to_cpu(tr.r13), le32_to_cpu(tr.r14), | |
9bd02c6b | 2998 | le32_to_cpu(tr.pc), sh->trap_addr, |
4fc0d016 AS |
2999 | le32_to_cpu(tr.r0), le32_to_cpu(tr.r1), |
3000 | le32_to_cpu(tr.r2), le32_to_cpu(tr.r3), | |
3001 | le32_to_cpu(tr.r4), le32_to_cpu(tr.r5), | |
3002 | le32_to_cpu(tr.r6), le32_to_cpu(tr.r7)); | |
3003 | ||
baa9e609 | 3004 | return simple_read_from_buffer(data, count, &pos, buf, res); |
4fc0d016 AS |
3005 | } |
3006 | ||
3007 | static int brcmf_sdio_assert_info(struct brcmf_sdio *bus, | |
3008 | struct sdpcm_shared *sh, char __user *data, | |
3009 | size_t count) | |
3010 | { | |
3011 | int error = 0; | |
3012 | char buf[200]; | |
3013 | char file[80] = "?"; | |
3014 | char expr[80] = "<???>"; | |
3015 | int res; | |
3016 | loff_t pos = 0; | |
3017 | ||
3018 | if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) { | |
3019 | brcmf_dbg(INFO, "firmware not built with -assert\n"); | |
3020 | return 0; | |
3021 | } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) { | |
3022 | brcmf_dbg(INFO, "no assert in dongle\n"); | |
3023 | return 0; | |
3024 | } | |
3025 | ||
38b0b0dd | 3026 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 | 3027 | if (sh->assert_file_addr != 0) { |
a39be27b AS |
3028 | error = brcmf_sdiod_ramrw(bus->sdiodev, false, |
3029 | sh->assert_file_addr, (u8 *)file, 80); | |
4fc0d016 AS |
3030 | if (error < 0) |
3031 | return error; | |
3032 | } | |
3033 | if (sh->assert_exp_addr != 0) { | |
a39be27b AS |
3034 | error = brcmf_sdiod_ramrw(bus->sdiodev, false, |
3035 | sh->assert_exp_addr, (u8 *)expr, 80); | |
4fc0d016 AS |
3036 | if (error < 0) |
3037 | return error; | |
3038 | } | |
38b0b0dd | 3039 | sdio_release_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
3040 | |
3041 | res = scnprintf(buf, sizeof(buf), | |
3042 | "dongle assert: %s:%d: assert(%s)\n", | |
3043 | file, sh->assert_line, expr); | |
3044 | return simple_read_from_buffer(data, count, &pos, buf, res); | |
3045 | } | |
3046 | ||
82d7f3c1 | 3047 | static int brcmf_sdio_checkdied(struct brcmf_sdio *bus) |
4fc0d016 AS |
3048 | { |
3049 | int error; | |
3050 | struct sdpcm_shared sh; | |
3051 | ||
4fc0d016 | 3052 | error = brcmf_sdio_readshared(bus, &sh); |
4fc0d016 AS |
3053 | |
3054 | if (error < 0) | |
3055 | return error; | |
3056 | ||
3057 | if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) | |
3058 | brcmf_dbg(INFO, "firmware not built with -assert\n"); | |
3059 | else if (sh.flags & SDPCM_SHARED_ASSERT) | |
5e8149f5 | 3060 | brcmf_err("assertion in dongle\n"); |
4fc0d016 AS |
3061 | |
3062 | if (sh.flags & SDPCM_SHARED_TRAP) | |
5e8149f5 | 3063 | brcmf_err("firmware trap in dongle\n"); |
4fc0d016 AS |
3064 | |
3065 | return 0; | |
3066 | } | |
3067 | ||
82d7f3c1 AS |
3068 | static int brcmf_sdio_died_dump(struct brcmf_sdio *bus, char __user *data, |
3069 | size_t count, loff_t *ppos) | |
4fc0d016 AS |
3070 | { |
3071 | int error = 0; | |
3072 | struct sdpcm_shared sh; | |
3073 | int nbytes = 0; | |
3074 | loff_t pos = *ppos; | |
3075 | ||
3076 | if (pos != 0) | |
3077 | return 0; | |
3078 | ||
4fc0d016 AS |
3079 | error = brcmf_sdio_readshared(bus, &sh); |
3080 | if (error < 0) | |
3081 | goto done; | |
3082 | ||
3083 | error = brcmf_sdio_assert_info(bus, &sh, data, count); | |
3084 | if (error < 0) | |
3085 | goto done; | |
4fc0d016 | 3086 | nbytes = error; |
baa9e609 PH |
3087 | |
3088 | error = brcmf_sdio_trap_info(bus, &sh, data+nbytes, count); | |
4fc0d016 AS |
3089 | if (error < 0) |
3090 | goto done; | |
baa9e609 PH |
3091 | nbytes += error; |
3092 | ||
3093 | error = brcmf_sdio_dump_console(bus, &sh, data+nbytes, count); | |
3094 | if (error < 0) | |
3095 | goto done; | |
3096 | nbytes += error; | |
4fc0d016 | 3097 | |
baa9e609 PH |
3098 | error = nbytes; |
3099 | *ppos += nbytes; | |
4fc0d016 | 3100 | done: |
4fc0d016 AS |
3101 | return error; |
3102 | } | |
3103 | ||
3104 | static ssize_t brcmf_sdio_forensic_read(struct file *f, char __user *data, | |
3105 | size_t count, loff_t *ppos) | |
3106 | { | |
3107 | struct brcmf_sdio *bus = f->private_data; | |
3108 | int res; | |
3109 | ||
82d7f3c1 | 3110 | res = brcmf_sdio_died_dump(bus, data, count, ppos); |
4fc0d016 AS |
3111 | if (res > 0) |
3112 | *ppos += res; | |
3113 | return (ssize_t)res; | |
3114 | } | |
3115 | ||
3116 | static const struct file_operations brcmf_sdio_forensic_ops = { | |
3117 | .owner = THIS_MODULE, | |
3118 | .open = simple_open, | |
3119 | .read = brcmf_sdio_forensic_read | |
3120 | }; | |
3121 | ||
80969836 AS |
3122 | static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) |
3123 | { | |
3124 | struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr; | |
4fc0d016 | 3125 | struct dentry *dentry = brcmf_debugfs_get_devdir(drvr); |
80969836 | 3126 | |
4fc0d016 AS |
3127 | if (IS_ERR_OR_NULL(dentry)) |
3128 | return; | |
3129 | ||
3130 | debugfs_create_file("forensics", S_IRUGO, dentry, bus, | |
3131 | &brcmf_sdio_forensic_ops); | |
80969836 AS |
3132 | brcmf_debugfs_create_sdio_count(drvr, &bus->sdcnt); |
3133 | } | |
3134 | #else | |
82d7f3c1 | 3135 | static int brcmf_sdio_checkdied(struct brcmf_sdio *bus) |
4fc0d016 AS |
3136 | { |
3137 | return 0; | |
3138 | } | |
3139 | ||
80969836 AS |
3140 | static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) |
3141 | { | |
3142 | } | |
3143 | #endif /* DEBUG */ | |
3144 | ||
fcf094f4 | 3145 | static int |
82d7f3c1 | 3146 | brcmf_sdio_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen) |
5b435de0 AS |
3147 | { |
3148 | int timeleft; | |
3149 | uint rxlen = 0; | |
3150 | bool pending; | |
dd43a01c | 3151 | u8 *buf; |
532cdd3b | 3152 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 3153 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
532cdd3b | 3154 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 AS |
3155 | |
3156 | brcmf_dbg(TRACE, "Enter\n"); | |
3157 | ||
3158 | /* Wait until control frame is available */ | |
82d7f3c1 | 3159 | timeleft = brcmf_sdio_dcmd_resp_wait(bus, &bus->rxlen, &pending); |
5b435de0 | 3160 | |
dd43a01c | 3161 | spin_lock_bh(&bus->rxctl_lock); |
5b435de0 AS |
3162 | rxlen = bus->rxlen; |
3163 | memcpy(msg, bus->rxctl, min(msglen, rxlen)); | |
dd43a01c FL |
3164 | bus->rxctl = NULL; |
3165 | buf = bus->rxctl_orig; | |
3166 | bus->rxctl_orig = NULL; | |
5b435de0 | 3167 | bus->rxlen = 0; |
dd43a01c FL |
3168 | spin_unlock_bh(&bus->rxctl_lock); |
3169 | vfree(buf); | |
5b435de0 AS |
3170 | |
3171 | if (rxlen) { | |
3172 | brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n", | |
3173 | rxlen, msglen); | |
3174 | } else if (timeleft == 0) { | |
5e8149f5 | 3175 | brcmf_err("resumed on timeout\n"); |
82d7f3c1 | 3176 | brcmf_sdio_checkdied(bus); |
23677ce3 | 3177 | } else if (pending) { |
5b435de0 AS |
3178 | brcmf_dbg(CTL, "cancelled\n"); |
3179 | return -ERESTARTSYS; | |
3180 | } else { | |
3181 | brcmf_dbg(CTL, "resumed for unknown reason?\n"); | |
82d7f3c1 | 3182 | brcmf_sdio_checkdied(bus); |
5b435de0 AS |
3183 | } |
3184 | ||
3185 | if (rxlen) | |
80969836 | 3186 | bus->sdcnt.rx_ctlpkts++; |
5b435de0 | 3187 | else |
80969836 | 3188 | bus->sdcnt.rx_ctlerrs++; |
5b435de0 AS |
3189 | |
3190 | return rxlen ? (int)rxlen : -ETIMEDOUT; | |
3191 | } | |
3192 | ||
82d7f3c1 | 3193 | static bool brcmf_sdio_download_state(struct brcmf_sdio *bus, bool enter) |
5b435de0 | 3194 | { |
99ba15cd | 3195 | struct chip_info *ci = bus->ci; |
5b435de0 AS |
3196 | |
3197 | /* To enter download state, disable ARM and reset SOCRAM. | |
3198 | * To exit download state, simply reset ARM (default is RAM boot). | |
3199 | */ | |
3200 | if (enter) { | |
3201 | bus->alp_only = true; | |
3202 | ||
069eddd9 | 3203 | brcmf_sdio_chip_enter_download(bus->sdiodev, ci); |
5b435de0 | 3204 | } else { |
069eddd9 FL |
3205 | if (!brcmf_sdio_chip_exit_download(bus->sdiodev, ci, bus->vars, |
3206 | bus->varsz)) | |
3207 | return false; | |
5b435de0 AS |
3208 | |
3209 | /* Allow HT Clock now that the ARM is running. */ | |
3210 | bus->alp_only = false; | |
3211 | ||
712ac5b3 | 3212 | bus->sdiodev->bus_if->state = BRCMF_BUS_LOAD; |
5b435de0 | 3213 | } |
069eddd9 FL |
3214 | |
3215 | return true; | |
5b435de0 AS |
3216 | } |
3217 | ||
82d7f3c1 | 3218 | static int brcmf_sdio_download_code_file(struct brcmf_sdio *bus) |
5b435de0 | 3219 | { |
f2c44fe7 HM |
3220 | const struct firmware *fw; |
3221 | int err; | |
1640f28f | 3222 | int offset; |
f2c44fe7 HM |
3223 | int address; |
3224 | int len; | |
3225 | ||
82d7f3c1 | 3226 | fw = brcmf_sdio_get_fw(bus, BRCMF_FIRMWARE_BIN); |
f2c44fe7 HM |
3227 | if (fw == NULL) |
3228 | return -ENOENT; | |
3229 | ||
3230 | if (brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_ARM_CR4) != | |
3231 | BRCMF_MAX_CORENUM) | |
3232 | memcpy(&bus->ci->rst_vec, fw->data, sizeof(bus->ci->rst_vec)); | |
3233 | ||
3234 | err = 0; | |
3235 | offset = 0; | |
3236 | address = bus->ci->rambase; | |
3237 | while (offset < fw->size) { | |
3238 | len = ((offset + MEMBLOCK) < fw->size) ? MEMBLOCK : | |
3239 | fw->size - offset; | |
a39be27b AS |
3240 | err = brcmf_sdiod_ramrw(bus->sdiodev, true, address, |
3241 | (u8 *)&fw->data[offset], len); | |
f2c44fe7 | 3242 | if (err) { |
5e8149f5 | 3243 | brcmf_err("error %d on writing %d membytes at 0x%08x\n", |
f2c44fe7 HM |
3244 | err, len, address); |
3245 | goto failure; | |
5b435de0 | 3246 | } |
f2c44fe7 HM |
3247 | offset += len; |
3248 | address += len; | |
5b435de0 AS |
3249 | } |
3250 | ||
f2c44fe7 HM |
3251 | failure: |
3252 | release_firmware(fw); | |
5b435de0 | 3253 | |
f2c44fe7 | 3254 | return err; |
5b435de0 AS |
3255 | } |
3256 | ||
3257 | /* | |
3258 | * ProcessVars:Takes a buffer of "<var>=<value>\n" lines read from a file | |
3259 | * and ending in a NUL. | |
3260 | * Removes carriage returns, empty lines, comment lines, and converts | |
3261 | * newlines to NULs. | |
3262 | * Shortens buffer as needed and pads with NULs. End of buffer is marked | |
3263 | * by two NULs. | |
3264 | */ | |
3265 | ||
82d7f3c1 AS |
3266 | static int brcmf_sdio_strip_nvram(struct brcmf_sdio *bus, |
3267 | const struct firmware *nv) | |
5b435de0 | 3268 | { |
d610cde3 | 3269 | char *varbuf; |
5b435de0 AS |
3270 | char *dp; |
3271 | bool findNewline; | |
3272 | int column; | |
d610cde3 FL |
3273 | int ret = 0; |
3274 | uint buf_len, n, len; | |
3275 | ||
f2c44fe7 | 3276 | len = nv->size; |
d610cde3 FL |
3277 | varbuf = vmalloc(len); |
3278 | if (!varbuf) | |
3279 | return -ENOMEM; | |
5b435de0 | 3280 | |
f2c44fe7 | 3281 | memcpy(varbuf, nv->data, len); |
5b435de0 AS |
3282 | dp = varbuf; |
3283 | ||
3284 | findNewline = false; | |
3285 | column = 0; | |
3286 | ||
3287 | for (n = 0; n < len; n++) { | |
3288 | if (varbuf[n] == 0) | |
3289 | break; | |
3290 | if (varbuf[n] == '\r') | |
3291 | continue; | |
3292 | if (findNewline && varbuf[n] != '\n') | |
3293 | continue; | |
3294 | findNewline = false; | |
3295 | if (varbuf[n] == '#') { | |
3296 | findNewline = true; | |
3297 | continue; | |
3298 | } | |
3299 | if (varbuf[n] == '\n') { | |
3300 | if (column == 0) | |
3301 | continue; | |
3302 | *dp++ = 0; | |
3303 | column = 0; | |
3304 | continue; | |
3305 | } | |
3306 | *dp++ = varbuf[n]; | |
3307 | column++; | |
3308 | } | |
3309 | buf_len = dp - varbuf; | |
5b435de0 AS |
3310 | while (dp < varbuf + n) |
3311 | *dp++ = 0; | |
3312 | ||
d610cde3 | 3313 | kfree(bus->vars); |
6d4ef680 AS |
3314 | /* roundup needed for download to device */ |
3315 | bus->varsz = roundup(buf_len + 1, 4); | |
d610cde3 FL |
3316 | bus->vars = kmalloc(bus->varsz, GFP_KERNEL); |
3317 | if (bus->vars == NULL) { | |
3318 | bus->varsz = 0; | |
3319 | ret = -ENOMEM; | |
3320 | goto err; | |
3321 | } | |
3322 | ||
3323 | /* copy the processed variables and add null termination */ | |
3324 | memcpy(bus->vars, varbuf, buf_len); | |
3325 | bus->vars[buf_len] = 0; | |
3326 | err: | |
3327 | vfree(varbuf); | |
3328 | return ret; | |
5b435de0 AS |
3329 | } |
3330 | ||
82d7f3c1 | 3331 | static int brcmf_sdio_download_nvram(struct brcmf_sdio *bus) |
5b435de0 | 3332 | { |
f2c44fe7 | 3333 | const struct firmware *nv; |
5b435de0 AS |
3334 | int ret; |
3335 | ||
82d7f3c1 | 3336 | nv = brcmf_sdio_get_fw(bus, BRCMF_FIRMWARE_NVRAM); |
f2c44fe7 HM |
3337 | if (nv == NULL) |
3338 | return -ENOENT; | |
5b435de0 | 3339 | |
82d7f3c1 | 3340 | ret = brcmf_sdio_strip_nvram(bus, nv); |
5b435de0 | 3341 | |
f2c44fe7 | 3342 | release_firmware(nv); |
5b435de0 AS |
3343 | |
3344 | return ret; | |
3345 | } | |
3346 | ||
82d7f3c1 | 3347 | static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus) |
5b435de0 | 3348 | { |
82d7f3c1 AS |
3349 | int bcmerror = -EFAULT; |
3350 | ||
3351 | ||
3352 | sdio_claim_host(bus->sdiodev->func[1]); | |
3353 | brcmf_sdio_clkctl(bus, CLK_AVAIL, false); | |
5b435de0 AS |
3354 | |
3355 | /* Keep arm in reset */ | |
82d7f3c1 | 3356 | if (!brcmf_sdio_download_state(bus, true)) { |
5e8149f5 | 3357 | brcmf_err("error placing ARM core in reset\n"); |
5b435de0 AS |
3358 | goto err; |
3359 | } | |
3360 | ||
82d7f3c1 | 3361 | if (brcmf_sdio_download_code_file(bus)) { |
5e8149f5 | 3362 | brcmf_err("dongle image file download failed\n"); |
5b435de0 AS |
3363 | goto err; |
3364 | } | |
3365 | ||
82d7f3c1 | 3366 | if (brcmf_sdio_download_nvram(bus)) { |
5e8149f5 | 3367 | brcmf_err("dongle nvram file download failed\n"); |
3eaa956c FL |
3368 | goto err; |
3369 | } | |
5b435de0 AS |
3370 | |
3371 | /* Take arm out of reset */ | |
82d7f3c1 | 3372 | if (!brcmf_sdio_download_state(bus, false)) { |
5e8149f5 | 3373 | brcmf_err("error getting out of ARM core reset\n"); |
5b435de0 AS |
3374 | goto err; |
3375 | } | |
3376 | ||
3377 | bcmerror = 0; | |
3378 | ||
3379 | err: | |
82d7f3c1 AS |
3380 | brcmf_sdio_clkctl(bus, CLK_SDONLY, false); |
3381 | sdio_release_host(bus->sdiodev->func[1]); | |
5b435de0 AS |
3382 | return bcmerror; |
3383 | } | |
3384 | ||
82d7f3c1 | 3385 | static bool brcmf_sdio_sr_capable(struct brcmf_sdio *bus) |
4a3da990 PH |
3386 | { |
3387 | u32 addr, reg; | |
3388 | ||
3389 | brcmf_dbg(TRACE, "Enter\n"); | |
3390 | ||
3391 | /* old chips with PMU version less than 17 don't support save restore */ | |
3392 | if (bus->ci->pmurev < 17) | |
3393 | return false; | |
3394 | ||
3395 | /* read PMU chipcontrol register 3*/ | |
3396 | addr = CORE_CC_REG(bus->ci->c_inf[0].base, chipcontrol_addr); | |
a39be27b | 3397 | brcmf_sdiod_regwl(bus->sdiodev, addr, 3, NULL); |
4a3da990 | 3398 | addr = CORE_CC_REG(bus->ci->c_inf[0].base, chipcontrol_data); |
a39be27b | 3399 | reg = brcmf_sdiod_regrl(bus->sdiodev, addr, NULL); |
4a3da990 PH |
3400 | |
3401 | return (bool)reg; | |
3402 | } | |
3403 | ||
82d7f3c1 | 3404 | static void brcmf_sdio_sr_init(struct brcmf_sdio *bus) |
4a3da990 PH |
3405 | { |
3406 | int err = 0; | |
3407 | u8 val; | |
3408 | ||
3409 | brcmf_dbg(TRACE, "Enter\n"); | |
3410 | ||
a39be27b | 3411 | val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, &err); |
4a3da990 PH |
3412 | if (err) { |
3413 | brcmf_err("error reading SBSDIO_FUNC1_WAKEUPCTRL\n"); | |
3414 | return; | |
3415 | } | |
3416 | ||
3417 | val |= 1 << SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT; | |
a39be27b | 3418 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, val, &err); |
4a3da990 PH |
3419 | if (err) { |
3420 | brcmf_err("error writing SBSDIO_FUNC1_WAKEUPCTRL\n"); | |
3421 | return; | |
3422 | } | |
3423 | ||
3424 | /* Add CMD14 Support */ | |
a39be27b AS |
3425 | brcmf_sdiod_regwb(bus->sdiodev, SDIO_CCCR_BRCM_CARDCAP, |
3426 | (SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT | | |
3427 | SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT), | |
3428 | &err); | |
4a3da990 PH |
3429 | if (err) { |
3430 | brcmf_err("error writing SDIO_CCCR_BRCM_CARDCAP\n"); | |
3431 | return; | |
3432 | } | |
3433 | ||
a39be27b AS |
3434 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3435 | SBSDIO_FORCE_HT, &err); | |
4a3da990 PH |
3436 | if (err) { |
3437 | brcmf_err("error writing SBSDIO_FUNC1_CHIPCLKCSR\n"); | |
3438 | return; | |
3439 | } | |
3440 | ||
3441 | /* set flag */ | |
3442 | bus->sr_enabled = true; | |
3443 | brcmf_dbg(INFO, "SR enabled\n"); | |
3444 | } | |
3445 | ||
3446 | /* enable KSO bit */ | |
82d7f3c1 | 3447 | static int brcmf_sdio_kso_init(struct brcmf_sdio *bus) |
4a3da990 PH |
3448 | { |
3449 | u8 val; | |
3450 | int err = 0; | |
3451 | ||
3452 | brcmf_dbg(TRACE, "Enter\n"); | |
3453 | ||
3454 | /* KSO bit added in SDIO core rev 12 */ | |
3455 | if (bus->ci->c_inf[1].rev < 12) | |
3456 | return 0; | |
3457 | ||
a39be27b | 3458 | val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err); |
4a3da990 PH |
3459 | if (err) { |
3460 | brcmf_err("error reading SBSDIO_FUNC1_SLEEPCSR\n"); | |
3461 | return err; | |
3462 | } | |
3463 | ||
3464 | if (!(val & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK)) { | |
3465 | val |= (SBSDIO_FUNC1_SLEEPCSR_KSO_EN << | |
3466 | SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT); | |
a39be27b AS |
3467 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
3468 | val, &err); | |
4a3da990 PH |
3469 | if (err) { |
3470 | brcmf_err("error writing SBSDIO_FUNC1_SLEEPCSR\n"); | |
3471 | return err; | |
3472 | } | |
3473 | } | |
3474 | ||
3475 | return 0; | |
3476 | } | |
3477 | ||
3478 | ||
82d7f3c1 | 3479 | static int brcmf_sdio_bus_preinit(struct device *dev) |
cf458287 AS |
3480 | { |
3481 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
3482 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
3483 | struct brcmf_sdio *bus = sdiodev->bus; | |
8da9d2c8 | 3484 | uint pad_size; |
cf458287 AS |
3485 | u32 value; |
3486 | u8 idx; | |
3487 | int err; | |
3488 | ||
8da9d2c8 FL |
3489 | /* the commands below use the terms tx and rx from |
3490 | * a device perspective, ie. bus:txglom affects the | |
3491 | * bus transfers from device to host. | |
3492 | */ | |
cf458287 AS |
3493 | idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); |
3494 | if (bus->ci->c_inf[idx].rev < 12) { | |
3495 | /* for sdio core rev < 12, disable txgloming */ | |
3496 | value = 0; | |
3497 | err = brcmf_iovar_data_set(dev, "bus:txglom", &value, | |
3498 | sizeof(u32)); | |
3499 | } else { | |
3500 | /* otherwise, set txglomalign */ | |
3501 | value = 4; | |
3502 | if (sdiodev->pdata) | |
3503 | value = sdiodev->pdata->sd_sgentry_align; | |
3504 | /* SDIO ADMA requires at least 32 bit alignment */ | |
3505 | value = max_t(u32, value, 4); | |
3506 | err = brcmf_iovar_data_set(dev, "bus:txglomalign", &value, | |
3507 | sizeof(u32)); | |
3508 | } | |
8da9d2c8 FL |
3509 | |
3510 | if (err < 0) | |
3511 | goto done; | |
3512 | ||
3513 | bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; | |
3514 | if (sdiodev->sg_support) { | |
3515 | bus->txglom = false; | |
3516 | value = 1; | |
3517 | pad_size = bus->sdiodev->func[2]->cur_blksize << 1; | |
3518 | bus->txglom_sgpad = brcmu_pkt_buf_get_skb(pad_size); | |
3519 | if (!bus->txglom_sgpad) | |
3520 | brcmf_err("allocating txglom padding skb failed, reduced performance\n"); | |
3521 | ||
3522 | err = brcmf_iovar_data_set(bus->sdiodev->dev, "bus:rxglom", | |
3523 | &value, sizeof(u32)); | |
3524 | if (err < 0) { | |
3525 | /* bus:rxglom is allowed to fail */ | |
3526 | err = 0; | |
3527 | } else { | |
3528 | bus->txglom = true; | |
3529 | bus->tx_hdrlen += SDPCM_HWEXT_LEN; | |
3530 | } | |
3531 | } | |
3532 | brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen); | |
3533 | ||
3534 | done: | |
cf458287 AS |
3535 | return err; |
3536 | } | |
3537 | ||
82d7f3c1 | 3538 | static int brcmf_sdio_bus_init(struct device *dev) |
5b435de0 | 3539 | { |
fa20b911 | 3540 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 3541 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
fa20b911 | 3542 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 AS |
3543 | int err, ret = 0; |
3544 | u8 saveclk; | |
3545 | ||
3546 | brcmf_dbg(TRACE, "Enter\n"); | |
3547 | ||
3548 | /* try to download image and nvram to the dongle */ | |
fa20b911 | 3549 | if (bus_if->state == BRCMF_BUS_DOWN) { |
82d7f3c1 AS |
3550 | err = brcmf_sdio_download_firmware(bus); |
3551 | if (err) | |
3552 | return err; | |
5b435de0 AS |
3553 | } |
3554 | ||
712ac5b3 | 3555 | if (!bus->sdiodev->bus_if->drvr) |
5b435de0 AS |
3556 | return 0; |
3557 | ||
3558 | /* Start the watchdog timer */ | |
80969836 | 3559 | bus->sdcnt.tickcnt = 0; |
82d7f3c1 | 3560 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 | 3561 | |
38b0b0dd | 3562 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3563 | |
3564 | /* Make sure backplane clock is on, needed to generate F2 interrupt */ | |
82d7f3c1 | 3565 | brcmf_sdio_clkctl(bus, CLK_AVAIL, false); |
5b435de0 AS |
3566 | if (bus->clkstate != CLK_AVAIL) |
3567 | goto exit; | |
3568 | ||
3569 | /* Force clocks on backplane to be sure F2 interrupt propagates */ | |
a39be27b AS |
3570 | saveclk = brcmf_sdiod_regrb(bus->sdiodev, |
3571 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 3572 | if (!err) { |
a39be27b AS |
3573 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3574 | (saveclk | SBSDIO_FORCE_HT), &err); | |
5b435de0 AS |
3575 | } |
3576 | if (err) { | |
5e8149f5 | 3577 | brcmf_err("Failed to force clock for F2: err %d\n", err); |
5b435de0 AS |
3578 | goto exit; |
3579 | } | |
3580 | ||
3581 | /* Enable function 2 (frame transfers) */ | |
3582 | w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, | |
58692750 | 3583 | offsetof(struct sdpcmd_regs, tosbmailboxdata)); |
71370eb8 | 3584 | err = sdio_enable_func(bus->sdiodev->func[SDIO_FUNC_2]); |
5b435de0 | 3585 | |
5b435de0 | 3586 | |
71370eb8 | 3587 | brcmf_dbg(INFO, "enable F2: err=%d\n", err); |
5b435de0 AS |
3588 | |
3589 | /* If F2 successfully enabled, set core and enable interrupts */ | |
71370eb8 | 3590 | if (!err) { |
5b435de0 AS |
3591 | /* Set up the interrupt mask and enable interrupts */ |
3592 | bus->hostintmask = HOSTINTMASK; | |
3593 | w_sdreg32(bus, bus->hostintmask, | |
58692750 | 3594 | offsetof(struct sdpcmd_regs, hostintmask)); |
5b435de0 | 3595 | |
a39be27b | 3596 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_WATERMARK, 8, &err); |
c0e89f08 | 3597 | } else { |
5b435de0 | 3598 | /* Disable F2 again */ |
71370eb8 | 3599 | sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]); |
c0e89f08 | 3600 | ret = -ENODEV; |
5b435de0 AS |
3601 | } |
3602 | ||
82d7f3c1 AS |
3603 | if (brcmf_sdio_sr_capable(bus)) { |
3604 | brcmf_sdio_sr_init(bus); | |
4a3da990 PH |
3605 | } else { |
3606 | /* Restore previous clock setting */ | |
a39be27b AS |
3607 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3608 | saveclk, &err); | |
4a3da990 | 3609 | } |
5b435de0 | 3610 | |
e2f93cc3 | 3611 | if (ret == 0) { |
a39be27b | 3612 | ret = brcmf_sdiod_intr_register(bus->sdiodev); |
e2f93cc3 | 3613 | if (ret != 0) |
5e8149f5 | 3614 | brcmf_err("intr register failed:%d\n", ret); |
e2f93cc3 FL |
3615 | } |
3616 | ||
5b435de0 | 3617 | /* If we didn't come up, turn off backplane clock */ |
d9126e0c | 3618 | if (bus_if->state != BRCMF_BUS_DATA) |
82d7f3c1 | 3619 | brcmf_sdio_clkctl(bus, CLK_NONE, false); |
5b435de0 AS |
3620 | |
3621 | exit: | |
38b0b0dd | 3622 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3623 | |
3624 | return ret; | |
3625 | } | |
3626 | ||
82d7f3c1 | 3627 | void brcmf_sdio_isr(struct brcmf_sdio *bus) |
5b435de0 | 3628 | { |
5b435de0 AS |
3629 | brcmf_dbg(TRACE, "Enter\n"); |
3630 | ||
3631 | if (!bus) { | |
5e8149f5 | 3632 | brcmf_err("bus is null pointer, exiting\n"); |
5b435de0 AS |
3633 | return; |
3634 | } | |
3635 | ||
712ac5b3 | 3636 | if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) { |
5e8149f5 | 3637 | brcmf_err("bus is down. we have nothing to do\n"); |
5b435de0 AS |
3638 | return; |
3639 | } | |
3640 | /* Count the interrupt call */ | |
80969836 | 3641 | bus->sdcnt.intrcount++; |
4531603a FL |
3642 | if (in_interrupt()) |
3643 | atomic_set(&bus->ipend, 1); | |
3644 | else | |
3645 | if (brcmf_sdio_intr_rstatus(bus)) { | |
5e8149f5 | 3646 | brcmf_err("failed backplane access\n"); |
4531603a FL |
3647 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
3648 | } | |
5b435de0 | 3649 | |
5b435de0 AS |
3650 | /* Disable additional interrupts (is this needed now)? */ |
3651 | if (!bus->intr) | |
5e8149f5 | 3652 | brcmf_err("isr w/o interrupt configured!\n"); |
5b435de0 | 3653 | |
fccfe930 | 3654 | atomic_inc(&bus->dpc_tskcnt); |
f1e68c2e | 3655 | queue_work(bus->brcmf_wq, &bus->datawork); |
5b435de0 AS |
3656 | } |
3657 | ||
82d7f3c1 | 3658 | static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus) |
5b435de0 | 3659 | { |
8ae74654 | 3660 | #ifdef DEBUG |
cad2b26b | 3661 | struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev); |
8ae74654 | 3662 | #endif /* DEBUG */ |
5b435de0 AS |
3663 | |
3664 | brcmf_dbg(TIMER, "Enter\n"); | |
3665 | ||
5b435de0 | 3666 | /* Poll period: check device if appropriate. */ |
4a3da990 PH |
3667 | if (!bus->sr_enabled && |
3668 | bus->poll && (++bus->polltick >= bus->pollrate)) { | |
5b435de0 AS |
3669 | u32 intstatus = 0; |
3670 | ||
3671 | /* Reset poll tick */ | |
3672 | bus->polltick = 0; | |
3673 | ||
3674 | /* Check device if no interrupts */ | |
80969836 AS |
3675 | if (!bus->intr || |
3676 | (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) { | |
5b435de0 | 3677 | |
fccfe930 | 3678 | if (atomic_read(&bus->dpc_tskcnt) == 0) { |
5b435de0 | 3679 | u8 devpend; |
fccfe930 | 3680 | |
38b0b0dd | 3681 | sdio_claim_host(bus->sdiodev->func[1]); |
a39be27b AS |
3682 | devpend = brcmf_sdiod_regrb(bus->sdiodev, |
3683 | SDIO_CCCR_INTx, | |
3684 | NULL); | |
38b0b0dd | 3685 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3686 | intstatus = |
3687 | devpend & (INTR_STATUS_FUNC1 | | |
3688 | INTR_STATUS_FUNC2); | |
3689 | } | |
3690 | ||
3691 | /* If there is something, make like the ISR and | |
3692 | schedule the DPC */ | |
3693 | if (intstatus) { | |
80969836 | 3694 | bus->sdcnt.pollcnt++; |
1d382273 | 3695 | atomic_set(&bus->ipend, 1); |
5b435de0 | 3696 | |
fccfe930 | 3697 | atomic_inc(&bus->dpc_tskcnt); |
f1e68c2e | 3698 | queue_work(bus->brcmf_wq, &bus->datawork); |
5b435de0 AS |
3699 | } |
3700 | } | |
3701 | ||
3702 | /* Update interrupt tracking */ | |
80969836 | 3703 | bus->sdcnt.lastintrs = bus->sdcnt.intrcount; |
5b435de0 | 3704 | } |
8ae74654 | 3705 | #ifdef DEBUG |
5b435de0 | 3706 | /* Poll for console output periodically */ |
2def5c10 | 3707 | if (bus_if && bus_if->state == BRCMF_BUS_DATA && |
8d169aa0 | 3708 | bus->console_interval != 0) { |
5b435de0 AS |
3709 | bus->console.count += BRCMF_WD_POLL_MS; |
3710 | if (bus->console.count >= bus->console_interval) { | |
3711 | bus->console.count -= bus->console_interval; | |
38b0b0dd | 3712 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 3713 | /* Make sure backplane clock is on */ |
82d7f3c1 AS |
3714 | brcmf_sdio_bus_sleep(bus, false, false); |
3715 | if (brcmf_sdio_readconsole(bus) < 0) | |
5b435de0 AS |
3716 | /* stop on error */ |
3717 | bus->console_interval = 0; | |
38b0b0dd | 3718 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3719 | } |
3720 | } | |
8ae74654 | 3721 | #endif /* DEBUG */ |
5b435de0 AS |
3722 | |
3723 | /* On idle timeout clear activity flag and/or turn off clock */ | |
3724 | if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { | |
3725 | if (++bus->idlecount >= bus->idletime) { | |
3726 | bus->idlecount = 0; | |
3727 | if (bus->activity) { | |
3728 | bus->activity = false; | |
82d7f3c1 | 3729 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 | 3730 | } else { |
4a3da990 | 3731 | brcmf_dbg(SDIO, "idle\n"); |
38b0b0dd | 3732 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 3733 | brcmf_sdio_bus_sleep(bus, true, false); |
38b0b0dd | 3734 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3735 | } |
3736 | } | |
3737 | } | |
3738 | ||
1d382273 | 3739 | return (atomic_read(&bus->ipend) > 0); |
5b435de0 AS |
3740 | } |
3741 | ||
f1e68c2e FL |
3742 | static void brcmf_sdio_dataworker(struct work_struct *work) |
3743 | { | |
3744 | struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio, | |
3745 | datawork); | |
f1e68c2e | 3746 | |
fccfe930 | 3747 | while (atomic_read(&bus->dpc_tskcnt)) { |
82d7f3c1 | 3748 | brcmf_sdio_dpc(bus); |
fccfe930 | 3749 | atomic_dec(&bus->dpc_tskcnt); |
f1e68c2e | 3750 | } |
f1e68c2e FL |
3751 | } |
3752 | ||
82d7f3c1 | 3753 | static bool brcmf_sdio_probe_malloc(struct brcmf_sdio *bus) |
5b435de0 AS |
3754 | { |
3755 | brcmf_dbg(TRACE, "Enter\n"); | |
3756 | ||
b01a6b3c | 3757 | if (bus->sdiodev->bus_if->maxctl) { |
5b435de0 | 3758 | bus->rxblen = |
b01a6b3c | 3759 | roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN), |
9b2d2f2a | 3760 | ALIGNMENT) + bus->head_align; |
5b435de0 AS |
3761 | bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); |
3762 | if (!(bus->rxbuf)) | |
354b75bf | 3763 | return false; |
5b435de0 AS |
3764 | } |
3765 | ||
5b435de0 | 3766 | return true; |
5b435de0 AS |
3767 | } |
3768 | ||
5b435de0 | 3769 | static bool |
82d7f3c1 | 3770 | brcmf_sdio_probe_attach(struct brcmf_sdio *bus) |
5b435de0 AS |
3771 | { |
3772 | u8 clkctl = 0; | |
3773 | int err = 0; | |
3774 | int reg_addr; | |
3775 | u32 reg_val; | |
668761ac | 3776 | u32 drivestrength; |
5b435de0 AS |
3777 | |
3778 | bus->alp_only = true; | |
3779 | ||
38b0b0dd FL |
3780 | sdio_claim_host(bus->sdiodev->func[1]); |
3781 | ||
18aad4f8 | 3782 | pr_debug("F1 signature read @0x18000000=0x%4x\n", |
a39be27b | 3783 | brcmf_sdiod_regrl(bus->sdiodev, SI_ENUM_BASE, NULL)); |
5b435de0 AS |
3784 | |
3785 | /* | |
a97e4fc5 | 3786 | * Force PLL off until brcmf_sdio_chip_attach() |
5b435de0 AS |
3787 | * programs PLL control regs |
3788 | */ | |
3789 | ||
a39be27b AS |
3790 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3791 | BRCMF_INIT_CLKCTL1, &err); | |
5b435de0 | 3792 | if (!err) |
a39be27b AS |
3793 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
3794 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 AS |
3795 | |
3796 | if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) { | |
5e8149f5 | 3797 | brcmf_err("ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n", |
5b435de0 AS |
3798 | err, BRCMF_INIT_CLKCTL1, clkctl); |
3799 | goto fail; | |
3800 | } | |
3801 | ||
4744d164 | 3802 | if (brcmf_sdio_chip_attach(bus->sdiodev, &bus->ci)) { |
5e8149f5 | 3803 | brcmf_err("brcmf_sdio_chip_attach failed!\n"); |
5b435de0 AS |
3804 | goto fail; |
3805 | } | |
3806 | ||
82d7f3c1 | 3807 | if (brcmf_sdio_kso_init(bus)) { |
4a3da990 PH |
3808 | brcmf_err("error enabling KSO\n"); |
3809 | goto fail; | |
3810 | } | |
3811 | ||
668761ac HM |
3812 | if ((bus->sdiodev->pdata) && (bus->sdiodev->pdata->drive_strength)) |
3813 | drivestrength = bus->sdiodev->pdata->drive_strength; | |
3814 | else | |
3815 | drivestrength = DEFAULT_SDIO_DRIVE_STRENGTH; | |
3816 | brcmf_sdio_chip_drivestrengthinit(bus->sdiodev, bus->ci, drivestrength); | |
5b435de0 | 3817 | |
454d2a88 | 3818 | /* Get info on the SOCRAM cores... */ |
5b435de0 AS |
3819 | bus->ramsize = bus->ci->ramsize; |
3820 | if (!(bus->ramsize)) { | |
5e8149f5 | 3821 | brcmf_err("failed to find SOCRAM memory!\n"); |
5b435de0 AS |
3822 | goto fail; |
3823 | } | |
3824 | ||
1e9ab4dd | 3825 | /* Set card control so an SDIO card reset does a WLAN backplane reset */ |
a39be27b AS |
3826 | reg_val = brcmf_sdiod_regrb(bus->sdiodev, |
3827 | SDIO_CCCR_BRCM_CARDCTRL, &err); | |
1e9ab4dd PH |
3828 | if (err) |
3829 | goto fail; | |
3830 | ||
3831 | reg_val |= SDIO_CCCR_BRCM_CARDCTRL_WLANRESET; | |
3832 | ||
a39be27b AS |
3833 | brcmf_sdiod_regwb(bus->sdiodev, |
3834 | SDIO_CCCR_BRCM_CARDCTRL, reg_val, &err); | |
1e9ab4dd PH |
3835 | if (err) |
3836 | goto fail; | |
3837 | ||
3838 | /* set PMUControl so a backplane reset does PMU state reload */ | |
3839 | reg_addr = CORE_CC_REG(bus->ci->c_inf[0].base, | |
3840 | pmucontrol); | |
a39be27b AS |
3841 | reg_val = brcmf_sdiod_regrl(bus->sdiodev, |
3842 | reg_addr, | |
3843 | &err); | |
1e9ab4dd PH |
3844 | if (err) |
3845 | goto fail; | |
3846 | ||
3847 | reg_val |= (BCMA_CC_PMU_CTL_RES_RELOAD << BCMA_CC_PMU_CTL_RES_SHIFT); | |
3848 | ||
a39be27b AS |
3849 | brcmf_sdiod_regwl(bus->sdiodev, |
3850 | reg_addr, | |
3851 | reg_val, | |
3852 | &err); | |
1e9ab4dd PH |
3853 | if (err) |
3854 | goto fail; | |
3855 | ||
5b435de0 | 3856 | |
38b0b0dd FL |
3857 | sdio_release_host(bus->sdiodev->func[1]); |
3858 | ||
5b435de0 AS |
3859 | brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); |
3860 | ||
9b2d2f2a AS |
3861 | /* allocate header buffer */ |
3862 | bus->hdrbuf = kzalloc(MAX_HDR_READ + bus->head_align, GFP_KERNEL); | |
3863 | if (!bus->hdrbuf) | |
3864 | return false; | |
5b435de0 AS |
3865 | /* Locate an appropriately-aligned portion of hdrbuf */ |
3866 | bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], | |
9b2d2f2a | 3867 | bus->head_align); |
5b435de0 AS |
3868 | |
3869 | /* Set the poll and/or interrupt flags */ | |
3870 | bus->intr = true; | |
3871 | bus->poll = false; | |
3872 | if (bus->poll) | |
3873 | bus->pollrate = 1; | |
3874 | ||
3875 | return true; | |
3876 | ||
3877 | fail: | |
38b0b0dd | 3878 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3879 | return false; |
3880 | } | |
3881 | ||
82d7f3c1 | 3882 | static bool brcmf_sdio_probe_init(struct brcmf_sdio *bus) |
5b435de0 AS |
3883 | { |
3884 | brcmf_dbg(TRACE, "Enter\n"); | |
3885 | ||
38b0b0dd FL |
3886 | sdio_claim_host(bus->sdiodev->func[1]); |
3887 | ||
5b435de0 | 3888 | /* Disable F2 to clear any intermediate frame state on the dongle */ |
71370eb8 | 3889 | sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]); |
5b435de0 | 3890 | |
712ac5b3 | 3891 | bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
5b435de0 AS |
3892 | bus->rxflow = false; |
3893 | ||
3894 | /* Done with backplane-dependent accesses, can drop clock... */ | |
a39be27b | 3895 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); |
5b435de0 | 3896 | |
38b0b0dd FL |
3897 | sdio_release_host(bus->sdiodev->func[1]); |
3898 | ||
5b435de0 AS |
3899 | /* ...and initialize clock/power states */ |
3900 | bus->clkstate = CLK_SDONLY; | |
3901 | bus->idletime = BRCMF_IDLE_INTERVAL; | |
3902 | bus->idleclock = BRCMF_IDLE_ACTIVE; | |
3903 | ||
3904 | /* Query the F2 block size, set roundup accordingly */ | |
3905 | bus->blocksize = bus->sdiodev->func[2]->cur_blksize; | |
3906 | bus->roundup = min(max_roundup, bus->blocksize); | |
3907 | ||
4a3da990 PH |
3908 | /* SR state */ |
3909 | bus->sleeping = false; | |
3910 | bus->sr_enabled = false; | |
3911 | ||
5b435de0 AS |
3912 | return true; |
3913 | } | |
3914 | ||
3915 | static int | |
82d7f3c1 | 3916 | brcmf_sdio_watchdog_thread(void *data) |
5b435de0 | 3917 | { |
e92eedf4 | 3918 | struct brcmf_sdio *bus = (struct brcmf_sdio *)data; |
5b435de0 AS |
3919 | |
3920 | allow_signal(SIGTERM); | |
3921 | /* Run until signal received */ | |
3922 | while (1) { | |
3923 | if (kthread_should_stop()) | |
3924 | break; | |
3925 | if (!wait_for_completion_interruptible(&bus->watchdog_wait)) { | |
82d7f3c1 | 3926 | brcmf_sdio_bus_watchdog(bus); |
5b435de0 | 3927 | /* Count the tick for reference */ |
80969836 | 3928 | bus->sdcnt.tickcnt++; |
5b435de0 AS |
3929 | } else |
3930 | break; | |
3931 | } | |
3932 | return 0; | |
3933 | } | |
3934 | ||
3935 | static void | |
82d7f3c1 | 3936 | brcmf_sdio_watchdog(unsigned long data) |
5b435de0 | 3937 | { |
e92eedf4 | 3938 | struct brcmf_sdio *bus = (struct brcmf_sdio *)data; |
5b435de0 AS |
3939 | |
3940 | if (bus->watchdog_tsk) { | |
3941 | complete(&bus->watchdog_wait); | |
3942 | /* Reschedule the watchdog */ | |
3943 | if (bus->wd_timer_valid) | |
3944 | mod_timer(&bus->timer, | |
3945 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000); | |
3946 | } | |
3947 | } | |
3948 | ||
d9cb2596 | 3949 | static struct brcmf_bus_ops brcmf_sdio_bus_ops = { |
82d7f3c1 AS |
3950 | .stop = brcmf_sdio_bus_stop, |
3951 | .preinit = brcmf_sdio_bus_preinit, | |
3952 | .init = brcmf_sdio_bus_init, | |
3953 | .txdata = brcmf_sdio_bus_txdata, | |
3954 | .txctl = brcmf_sdio_bus_txctl, | |
3955 | .rxctl = brcmf_sdio_bus_rxctl, | |
3956 | .gettxq = brcmf_sdio_bus_gettxq, | |
d9cb2596 AS |
3957 | }; |
3958 | ||
82d7f3c1 | 3959 | struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) |
5b435de0 AS |
3960 | { |
3961 | int ret; | |
e92eedf4 | 3962 | struct brcmf_sdio *bus; |
5b435de0 | 3963 | |
5b435de0 AS |
3964 | brcmf_dbg(TRACE, "Enter\n"); |
3965 | ||
5b435de0 | 3966 | /* Allocate private bus interface state */ |
e92eedf4 | 3967 | bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC); |
5b435de0 AS |
3968 | if (!bus) |
3969 | goto fail; | |
3970 | ||
3971 | bus->sdiodev = sdiodev; | |
3972 | sdiodev->bus = bus; | |
b83db862 | 3973 | skb_queue_head_init(&bus->glom); |
5b435de0 AS |
3974 | bus->txbound = BRCMF_TXBOUND; |
3975 | bus->rxbound = BRCMF_RXBOUND; | |
3976 | bus->txminmax = BRCMF_TXMINMAX; | |
6bc52319 | 3977 | bus->tx_seq = SDPCM_SEQ_WRAP - 1; |
5b435de0 | 3978 | |
e217d1c8 AS |
3979 | /* platform specific configuration: |
3980 | * alignments must be at least 4 bytes for ADMA | |
3981 | */ | |
3982 | bus->head_align = ALIGNMENT; | |
3983 | bus->sgentry_align = ALIGNMENT; | |
3984 | if (sdiodev->pdata) { | |
3985 | if (sdiodev->pdata->sd_head_align > ALIGNMENT) | |
3986 | bus->head_align = sdiodev->pdata->sd_head_align; | |
3987 | if (sdiodev->pdata->sd_sgentry_align > ALIGNMENT) | |
3988 | bus->sgentry_align = sdiodev->pdata->sd_sgentry_align; | |
3989 | } | |
3990 | ||
37ac5780 HM |
3991 | INIT_WORK(&bus->datawork, brcmf_sdio_dataworker); |
3992 | bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq"); | |
3993 | if (bus->brcmf_wq == NULL) { | |
5e8149f5 | 3994 | brcmf_err("insufficient memory to create txworkqueue\n"); |
37ac5780 HM |
3995 | goto fail; |
3996 | } | |
3997 | ||
5b435de0 | 3998 | /* attempt to attach to the dongle */ |
82d7f3c1 AS |
3999 | if (!(brcmf_sdio_probe_attach(bus))) { |
4000 | brcmf_err("brcmf_sdio_probe_attach failed\n"); | |
5b435de0 AS |
4001 | goto fail; |
4002 | } | |
4003 | ||
dd43a01c | 4004 | spin_lock_init(&bus->rxctl_lock); |
5b435de0 AS |
4005 | spin_lock_init(&bus->txqlock); |
4006 | init_waitqueue_head(&bus->ctrl_wait); | |
4007 | init_waitqueue_head(&bus->dcmd_resp_wait); | |
4008 | ||
4009 | /* Set up the watchdog timer */ | |
4010 | init_timer(&bus->timer); | |
4011 | bus->timer.data = (unsigned long)bus; | |
82d7f3c1 | 4012 | bus->timer.function = brcmf_sdio_watchdog; |
5b435de0 | 4013 | |
5b435de0 AS |
4014 | /* Initialize watchdog thread */ |
4015 | init_completion(&bus->watchdog_wait); | |
82d7f3c1 | 4016 | bus->watchdog_tsk = kthread_run(brcmf_sdio_watchdog_thread, |
5b435de0 AS |
4017 | bus, "brcmf_watchdog"); |
4018 | if (IS_ERR(bus->watchdog_tsk)) { | |
02f77195 | 4019 | pr_warn("brcmf_watchdog thread failed to start\n"); |
5b435de0 AS |
4020 | bus->watchdog_tsk = NULL; |
4021 | } | |
4022 | /* Initialize DPC thread */ | |
fccfe930 | 4023 | atomic_set(&bus->dpc_tskcnt, 0); |
5b435de0 | 4024 | |
a9ffda88 | 4025 | /* Assign bus interface call back */ |
d9cb2596 AS |
4026 | bus->sdiodev->bus_if->dev = bus->sdiodev->dev; |
4027 | bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops; | |
75d907d3 AS |
4028 | bus->sdiodev->bus_if->chip = bus->ci->chip; |
4029 | bus->sdiodev->bus_if->chiprev = bus->ci->chiprev; | |
d9cb2596 | 4030 | |
706478cb FL |
4031 | /* default sdio bus header length for tx packet */ |
4032 | bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; | |
4033 | ||
4034 | /* Attach to the common layer, reserve hdr space */ | |
8dee77ba | 4035 | ret = brcmf_attach(bus->sdiodev->dev); |
712ac5b3 | 4036 | if (ret != 0) { |
5e8149f5 | 4037 | brcmf_err("brcmf_attach failed\n"); |
5b435de0 AS |
4038 | goto fail; |
4039 | } | |
4040 | ||
4041 | /* Allocate buffers */ | |
82d7f3c1 AS |
4042 | if (!(brcmf_sdio_probe_malloc(bus))) { |
4043 | brcmf_err("brcmf_sdio_probe_malloc failed\n"); | |
5b435de0 AS |
4044 | goto fail; |
4045 | } | |
4046 | ||
82d7f3c1 AS |
4047 | if (!(brcmf_sdio_probe_init(bus))) { |
4048 | brcmf_err("brcmf_sdio_probe_init failed\n"); | |
5b435de0 AS |
4049 | goto fail; |
4050 | } | |
4051 | ||
80969836 | 4052 | brcmf_sdio_debugfs_create(bus); |
5b435de0 AS |
4053 | brcmf_dbg(INFO, "completed!!\n"); |
4054 | ||
4055 | /* if firmware path present try to download and bring up bus */ | |
ed683c98 | 4056 | ret = brcmf_bus_start(bus->sdiodev->dev); |
5b435de0 | 4057 | if (ret != 0) { |
5e8149f5 | 4058 | brcmf_err("dongle is not responding\n"); |
1799ddf1 | 4059 | goto fail; |
5b435de0 | 4060 | } |
15d45b6f | 4061 | |
5b435de0 AS |
4062 | return bus; |
4063 | ||
4064 | fail: | |
9fbe2a6d | 4065 | brcmf_sdio_remove(bus); |
5b435de0 AS |
4066 | return NULL; |
4067 | } | |
4068 | ||
9fbe2a6d AS |
4069 | /* Detach and free everything */ |
4070 | void brcmf_sdio_remove(struct brcmf_sdio *bus) | |
5b435de0 | 4071 | { |
5b435de0 AS |
4072 | brcmf_dbg(TRACE, "Enter\n"); |
4073 | ||
9fbe2a6d AS |
4074 | if (bus) { |
4075 | /* De-register interrupt handler */ | |
4076 | brcmf_sdiod_intr_unregister(bus->sdiodev); | |
4077 | ||
4078 | cancel_work_sync(&bus->datawork); | |
4079 | if (bus->brcmf_wq) | |
4080 | destroy_workqueue(bus->brcmf_wq); | |
4081 | ||
4082 | if (bus->sdiodev->bus_if->drvr) { | |
4083 | brcmf_detach(bus->sdiodev->dev); | |
bfad4a04 AS |
4084 | } |
4085 | ||
4086 | if (bus->ci) { | |
4087 | sdio_claim_host(bus->sdiodev->func[1]); | |
4088 | brcmf_sdio_clkctl(bus, CLK_AVAIL, false); | |
4089 | brcmf_sdio_clkctl(bus, CLK_NONE, false); | |
4090 | sdio_release_host(bus->sdiodev->func[1]); | |
4091 | brcmf_sdio_chip_detach(&bus->ci); | |
9fbe2a6d AS |
4092 | } |
4093 | ||
4094 | brcmu_pkt_buf_free_skb(bus->txglom_sgpad); | |
bfad4a04 | 4095 | kfree(bus->rxbuf); |
9fbe2a6d | 4096 | kfree(bus->hdrbuf); |
bfad4a04 | 4097 | kfree(bus->vars); |
9fbe2a6d AS |
4098 | kfree(bus); |
4099 | } | |
5b435de0 AS |
4100 | |
4101 | brcmf_dbg(TRACE, "Disconnected\n"); | |
4102 | } | |
4103 | ||
82d7f3c1 | 4104 | void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick) |
5b435de0 | 4105 | { |
5b435de0 | 4106 | /* Totally stop the timer */ |
23677ce3 | 4107 | if (!wdtick && bus->wd_timer_valid) { |
5b435de0 AS |
4108 | del_timer_sync(&bus->timer); |
4109 | bus->wd_timer_valid = false; | |
4110 | bus->save_ms = wdtick; | |
4111 | return; | |
4112 | } | |
4113 | ||
ece960ea | 4114 | /* don't start the wd until fw is loaded */ |
712ac5b3 | 4115 | if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) |
ece960ea FL |
4116 | return; |
4117 | ||
5b435de0 AS |
4118 | if (wdtick) { |
4119 | if (bus->save_ms != BRCMF_WD_POLL_MS) { | |
23677ce3 | 4120 | if (bus->wd_timer_valid) |
5b435de0 AS |
4121 | /* Stop timer and restart at new value */ |
4122 | del_timer_sync(&bus->timer); | |
4123 | ||
4124 | /* Create timer again when watchdog period is | |
4125 | dynamically changed or in the first instance | |
4126 | */ | |
4127 | bus->timer.expires = | |
4128 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000; | |
4129 | add_timer(&bus->timer); | |
4130 | ||
4131 | } else { | |
4132 | /* Re arm the timer, at last watchdog period */ | |
4133 | mod_timer(&bus->timer, | |
4134 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000); | |
4135 | } | |
4136 | ||
4137 | bus->wd_timer_valid = true; | |
4138 | bus->save_ms = wdtick; | |
4139 | } | |
4140 | } |