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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> | |
cb7cf7be | 26 | #include <linux/mmc/sdio_ids.h> |
5b435de0 AS |
27 | #include <linux/mmc/sdio_func.h> |
28 | #include <linux/mmc/card.h> | |
29 | #include <linux/semaphore.h> | |
30 | #include <linux/firmware.h> | |
b7a57e76 | 31 | #include <linux/module.h> |
99ba15cd | 32 | #include <linux/bcma/bcma.h> |
4fc0d016 | 33 | #include <linux/debugfs.h> |
8dc01811 | 34 | #include <linux/vmalloc.h> |
668761ac | 35 | #include <linux/platform_data/brcmfmac-sdio.h> |
8da9d2c8 | 36 | #include <linux/moduleparam.h> |
5b435de0 AS |
37 | #include <asm/unaligned.h> |
38 | #include <defs.h> | |
39 | #include <brcmu_wifi.h> | |
40 | #include <brcmu_utils.h> | |
41 | #include <brcm_hw_ids.h> | |
42 | #include <soc.h> | |
43 | #include "sdio_host.h" | |
20c9c9bc | 44 | #include "chip.h" |
dabedab9 | 45 | #include "firmware.h" |
5b435de0 AS |
46 | |
47 | #define DCMD_RESP_TIMEOUT 2000 /* In milli second */ | |
48 | ||
8ae74654 | 49 | #ifdef DEBUG |
5b435de0 AS |
50 | |
51 | #define BRCMF_TRAP_INFO_SIZE 80 | |
52 | ||
53 | #define CBUF_LEN (128) | |
54 | ||
4fc0d016 AS |
55 | /* Device console log buffer state */ |
56 | #define CONSOLE_BUFFER_MAX 2024 | |
57 | ||
5b435de0 AS |
58 | struct rte_log_le { |
59 | __le32 buf; /* Can't be pointer on (64-bit) hosts */ | |
60 | __le32 buf_size; | |
61 | __le32 idx; | |
62 | char *_buf_compat; /* Redundant pointer for backward compat. */ | |
63 | }; | |
64 | ||
65 | struct rte_console { | |
66 | /* Virtual UART | |
67 | * When there is no UART (e.g. Quickturn), | |
68 | * the host should write a complete | |
69 | * input line directly into cbuf and then write | |
70 | * the length into vcons_in. | |
71 | * This may also be used when there is a real UART | |
72 | * (at risk of conflicting with | |
73 | * the real UART). vcons_out is currently unused. | |
74 | */ | |
75 | uint vcons_in; | |
76 | uint vcons_out; | |
77 | ||
78 | /* Output (logging) buffer | |
79 | * Console output is written to a ring buffer log_buf at index log_idx. | |
80 | * The host may read the output when it sees log_idx advance. | |
81 | * Output will be lost if the output wraps around faster than the host | |
82 | * polls. | |
83 | */ | |
84 | struct rte_log_le log_le; | |
85 | ||
86 | /* Console input line buffer | |
87 | * Characters are read one at a time into cbuf | |
88 | * until <CR> is received, then | |
89 | * the buffer is processed as a command line. | |
90 | * Also used for virtual UART. | |
91 | */ | |
92 | uint cbuf_idx; | |
93 | char cbuf[CBUF_LEN]; | |
94 | }; | |
95 | ||
8ae74654 | 96 | #endif /* DEBUG */ |
5b435de0 AS |
97 | #include <chipcommon.h> |
98 | ||
5b435de0 | 99 | #include "dhd_bus.h" |
5b435de0 | 100 | #include "dhd_dbg.h" |
40c1c249 | 101 | #include "tracepoint.h" |
5b435de0 AS |
102 | |
103 | #define TXQLEN 2048 /* bulk tx queue length */ | |
104 | #define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */ | |
105 | #define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */ | |
106 | #define PRIOMASK 7 | |
107 | ||
108 | #define TXRETRIES 2 /* # of retries for tx frames */ | |
109 | ||
110 | #define BRCMF_RXBOUND 50 /* Default for max rx frames in | |
111 | one scheduling */ | |
112 | ||
113 | #define BRCMF_TXBOUND 20 /* Default for max tx frames in | |
114 | one scheduling */ | |
115 | ||
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 | ||
cb7cf7be AS |
158 | #define CORE_BUS_REG(base, field) \ |
159 | (base + offsetof(struct sdpcmd_regs, field)) | |
160 | ||
161 | /* SDIO function 1 register CHIPCLKCSR */ | |
162 | /* Force ALP request to backplane */ | |
163 | #define SBSDIO_FORCE_ALP 0x01 | |
164 | /* Force HT request to backplane */ | |
165 | #define SBSDIO_FORCE_HT 0x02 | |
166 | /* Force ILP request to backplane */ | |
167 | #define SBSDIO_FORCE_ILP 0x04 | |
168 | /* Make ALP ready (power up xtal) */ | |
169 | #define SBSDIO_ALP_AVAIL_REQ 0x08 | |
170 | /* Make HT ready (power up PLL) */ | |
171 | #define SBSDIO_HT_AVAIL_REQ 0x10 | |
172 | /* Squelch clock requests from HW */ | |
173 | #define SBSDIO_FORCE_HW_CLKREQ_OFF 0x20 | |
174 | /* Status: ALP is ready */ | |
175 | #define SBSDIO_ALP_AVAIL 0x40 | |
176 | /* Status: HT is ready */ | |
177 | #define SBSDIO_HT_AVAIL 0x80 | |
8a385ba5 | 178 | #define SBSDIO_CSR_MASK 0x1F |
cb7cf7be AS |
179 | #define SBSDIO_AVBITS (SBSDIO_HT_AVAIL | SBSDIO_ALP_AVAIL) |
180 | #define SBSDIO_ALPAV(regval) ((regval) & SBSDIO_AVBITS) | |
181 | #define SBSDIO_HTAV(regval) (((regval) & SBSDIO_AVBITS) == SBSDIO_AVBITS) | |
182 | #define SBSDIO_ALPONLY(regval) (SBSDIO_ALPAV(regval) && !SBSDIO_HTAV(regval)) | |
183 | #define SBSDIO_CLKAV(regval, alponly) \ | |
184 | (SBSDIO_ALPAV(regval) && (alponly ? 1 : SBSDIO_HTAV(regval))) | |
185 | ||
5b435de0 AS |
186 | /* intstatus */ |
187 | #define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */ | |
188 | #define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */ | |
189 | #define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */ | |
190 | #define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */ | |
191 | #define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */ | |
192 | #define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */ | |
193 | #define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */ | |
194 | #define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */ | |
195 | #define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */ | |
196 | #define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */ | |
197 | #define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */ | |
198 | #define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */ | |
199 | #define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */ | |
200 | #define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */ | |
201 | #define I_PC (1 << 10) /* descriptor error */ | |
202 | #define I_PD (1 << 11) /* data error */ | |
203 | #define I_DE (1 << 12) /* Descriptor protocol Error */ | |
204 | #define I_RU (1 << 13) /* Receive descriptor Underflow */ | |
205 | #define I_RO (1 << 14) /* Receive fifo Overflow */ | |
206 | #define I_XU (1 << 15) /* Transmit fifo Underflow */ | |
207 | #define I_RI (1 << 16) /* Receive Interrupt */ | |
208 | #define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */ | |
209 | #define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */ | |
210 | #define I_XI (1 << 24) /* Transmit Interrupt */ | |
211 | #define I_RF_TERM (1 << 25) /* Read Frame Terminate */ | |
212 | #define I_WF_TERM (1 << 26) /* Write Frame Terminate */ | |
213 | #define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */ | |
214 | #define I_SBINT (1 << 28) /* sbintstatus Interrupt */ | |
215 | #define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */ | |
216 | #define I_SRESET (1 << 30) /* CCCR RES interrupt */ | |
217 | #define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */ | |
218 | #define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU) | |
219 | #define I_DMA (I_RI | I_XI | I_ERRORS) | |
220 | ||
221 | /* corecontrol */ | |
222 | #define CC_CISRDY (1 << 0) /* CIS Ready */ | |
223 | #define CC_BPRESEN (1 << 1) /* CCCR RES signal */ | |
224 | #define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */ | |
225 | #define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */ | |
226 | #define CC_XMTDATAAVAIL_MODE (1 << 4) | |
227 | #define CC_XMTDATAAVAIL_CTRL (1 << 5) | |
228 | ||
229 | /* SDA_FRAMECTRL */ | |
230 | #define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */ | |
231 | #define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */ | |
232 | #define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */ | |
233 | #define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */ | |
234 | ||
5b435de0 AS |
235 | /* |
236 | * Software allocation of To SB Mailbox resources | |
237 | */ | |
238 | ||
239 | /* tosbmailbox bits corresponding to intstatus bits */ | |
240 | #define SMB_NAK (1 << 0) /* Frame NAK */ | |
241 | #define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */ | |
242 | #define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */ | |
243 | #define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */ | |
244 | ||
245 | /* tosbmailboxdata */ | |
246 | #define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */ | |
247 | ||
248 | /* | |
249 | * Software allocation of To Host Mailbox resources | |
250 | */ | |
251 | ||
252 | /* intstatus bits */ | |
253 | #define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */ | |
254 | #define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */ | |
255 | #define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */ | |
256 | #define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */ | |
257 | ||
258 | /* tohostmailboxdata */ | |
259 | #define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */ | |
260 | #define HMB_DATA_DEVREADY 2 /* talk to host after enable */ | |
261 | #define HMB_DATA_FC 4 /* per prio flowcontrol update flag */ | |
262 | #define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */ | |
263 | ||
264 | #define HMB_DATA_FCDATA_MASK 0xff000000 | |
265 | #define HMB_DATA_FCDATA_SHIFT 24 | |
266 | ||
267 | #define HMB_DATA_VERSION_MASK 0x00ff0000 | |
268 | #define HMB_DATA_VERSION_SHIFT 16 | |
269 | ||
270 | /* | |
271 | * Software-defined protocol header | |
272 | */ | |
273 | ||
274 | /* Current protocol version */ | |
275 | #define SDPCM_PROT_VERSION 4 | |
276 | ||
5b435de0 AS |
277 | /* |
278 | * Shared structure between dongle and the host. | |
279 | * The structure contains pointers to trap or assert information. | |
280 | */ | |
4fc0d016 | 281 | #define SDPCM_SHARED_VERSION 0x0003 |
5b435de0 AS |
282 | #define SDPCM_SHARED_VERSION_MASK 0x00FF |
283 | #define SDPCM_SHARED_ASSERT_BUILT 0x0100 | |
284 | #define SDPCM_SHARED_ASSERT 0x0200 | |
285 | #define SDPCM_SHARED_TRAP 0x0400 | |
286 | ||
287 | /* Space for header read, limit for data packets */ | |
288 | #define MAX_HDR_READ (1 << 6) | |
289 | #define MAX_RX_DATASZ 2048 | |
290 | ||
5b435de0 AS |
291 | /* Bump up limit on waiting for HT to account for first startup; |
292 | * if the image is doing a CRC calculation before programming the PMU | |
293 | * for HT availability, it could take a couple hundred ms more, so | |
294 | * max out at a 1 second (1000000us). | |
295 | */ | |
296 | #undef PMU_MAX_TRANSITION_DLY | |
297 | #define PMU_MAX_TRANSITION_DLY 1000000 | |
298 | ||
299 | /* Value for ChipClockCSR during initial setup */ | |
300 | #define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \ | |
301 | SBSDIO_ALP_AVAIL_REQ) | |
302 | ||
303 | /* Flags for SDH calls */ | |
304 | #define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED) | |
305 | ||
382a9e0f FL |
306 | #define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change |
307 | * when idle | |
308 | */ | |
309 | #define BRCMF_IDLE_INTERVAL 1 | |
310 | ||
4a3da990 PH |
311 | #define KSO_WAIT_US 50 |
312 | #define MAX_KSO_ATTEMPTS (PMU_MAX_TRANSITION_DLY/KSO_WAIT_US) | |
313 | ||
5b435de0 AS |
314 | /* |
315 | * Conversion of 802.1D priority to precedence level | |
316 | */ | |
317 | static uint prio2prec(u32 prio) | |
318 | { | |
319 | return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ? | |
320 | (prio^2) : prio; | |
321 | } | |
322 | ||
8ae74654 | 323 | #ifdef DEBUG |
5b435de0 AS |
324 | /* Device console log buffer state */ |
325 | struct brcmf_console { | |
326 | uint count; /* Poll interval msec counter */ | |
327 | uint log_addr; /* Log struct address (fixed) */ | |
328 | struct rte_log_le log_le; /* Log struct (host copy) */ | |
329 | uint bufsize; /* Size of log buffer */ | |
330 | u8 *buf; /* Log buffer (host copy) */ | |
331 | uint last; /* Last buffer read index */ | |
332 | }; | |
4fc0d016 AS |
333 | |
334 | struct brcmf_trap_info { | |
335 | __le32 type; | |
336 | __le32 epc; | |
337 | __le32 cpsr; | |
338 | __le32 spsr; | |
339 | __le32 r0; /* a1 */ | |
340 | __le32 r1; /* a2 */ | |
341 | __le32 r2; /* a3 */ | |
342 | __le32 r3; /* a4 */ | |
343 | __le32 r4; /* v1 */ | |
344 | __le32 r5; /* v2 */ | |
345 | __le32 r6; /* v3 */ | |
346 | __le32 r7; /* v4 */ | |
347 | __le32 r8; /* v5 */ | |
348 | __le32 r9; /* sb/v6 */ | |
349 | __le32 r10; /* sl/v7 */ | |
350 | __le32 r11; /* fp/v8 */ | |
351 | __le32 r12; /* ip */ | |
352 | __le32 r13; /* sp */ | |
353 | __le32 r14; /* lr */ | |
354 | __le32 pc; /* r15 */ | |
355 | }; | |
8ae74654 | 356 | #endif /* DEBUG */ |
5b435de0 AS |
357 | |
358 | struct sdpcm_shared { | |
359 | u32 flags; | |
360 | u32 trap_addr; | |
361 | u32 assert_exp_addr; | |
362 | u32 assert_file_addr; | |
363 | u32 assert_line; | |
364 | u32 console_addr; /* Address of struct rte_console */ | |
365 | u32 msgtrace_addr; | |
366 | u8 tag[32]; | |
4fc0d016 | 367 | u32 brpt_addr; |
5b435de0 AS |
368 | }; |
369 | ||
370 | struct sdpcm_shared_le { | |
371 | __le32 flags; | |
372 | __le32 trap_addr; | |
373 | __le32 assert_exp_addr; | |
374 | __le32 assert_file_addr; | |
375 | __le32 assert_line; | |
376 | __le32 console_addr; /* Address of struct rte_console */ | |
377 | __le32 msgtrace_addr; | |
378 | u8 tag[32]; | |
4fc0d016 | 379 | __le32 brpt_addr; |
5b435de0 AS |
380 | }; |
381 | ||
6bc52319 FL |
382 | /* dongle SDIO bus specific header info */ |
383 | struct brcmf_sdio_hdrinfo { | |
4754fcee FL |
384 | u8 seq_num; |
385 | u8 channel; | |
386 | u16 len; | |
387 | u16 len_left; | |
388 | u16 len_nxtfrm; | |
389 | u8 dat_offset; | |
8da9d2c8 FL |
390 | bool lastfrm; |
391 | u16 tail_pad; | |
4754fcee | 392 | }; |
5b435de0 AS |
393 | |
394 | /* misc chip info needed by some of the routines */ | |
5b435de0 | 395 | /* Private data for SDIO bus interaction */ |
e92eedf4 | 396 | struct brcmf_sdio { |
5b435de0 | 397 | struct brcmf_sdio_dev *sdiodev; /* sdio device handler */ |
9cf218fc | 398 | struct brcmf_chip *ci; /* Chip info struct */ |
5b435de0 AS |
399 | |
400 | u32 ramsize; /* Size of RAM in SOCRAM (bytes) */ | |
401 | ||
402 | u32 hostintmask; /* Copy of Host Interrupt Mask */ | |
4531603a FL |
403 | atomic_t intstatus; /* Intstatus bits (events) pending */ |
404 | atomic_t fcstate; /* State of dongle flow-control */ | |
5b435de0 AS |
405 | |
406 | uint blocksize; /* Block size of SDIO transfers */ | |
407 | uint roundup; /* Max roundup limit */ | |
408 | ||
409 | struct pktq txq; /* Queue length used for flow-control */ | |
410 | u8 flowcontrol; /* per prio flow control bitmask */ | |
411 | u8 tx_seq; /* Transmit sequence number (next) */ | |
412 | u8 tx_max; /* Maximum transmit sequence allowed */ | |
413 | ||
9b2d2f2a | 414 | u8 *hdrbuf; /* buffer for handling rx frame */ |
5b435de0 | 415 | u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */ |
5b435de0 | 416 | u8 rx_seq; /* Receive sequence number (expected) */ |
6bc52319 | 417 | struct brcmf_sdio_hdrinfo cur_read; |
4754fcee | 418 | /* info of current read frame */ |
5b435de0 | 419 | bool rxskip; /* Skip receive (awaiting NAK ACK) */ |
4754fcee | 420 | bool rxpending; /* Data frame pending in dongle */ |
5b435de0 AS |
421 | |
422 | uint rxbound; /* Rx frames to read before resched */ | |
423 | uint txbound; /* Tx frames to send before resched */ | |
424 | uint txminmax; | |
425 | ||
426 | struct sk_buff *glomd; /* Packet containing glomming descriptor */ | |
b83db862 | 427 | struct sk_buff_head glom; /* Packet list for glommed superframe */ |
5b435de0 AS |
428 | uint glomerr; /* Glom packet read errors */ |
429 | ||
430 | u8 *rxbuf; /* Buffer for receiving control packets */ | |
431 | uint rxblen; /* Allocated length of rxbuf */ | |
432 | u8 *rxctl; /* Aligned pointer into rxbuf */ | |
dd43a01c | 433 | u8 *rxctl_orig; /* pointer for freeing rxctl */ |
5b435de0 | 434 | uint rxlen; /* Length of valid data in buffer */ |
dd43a01c | 435 | spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */ |
5b435de0 AS |
436 | |
437 | u8 sdpcm_ver; /* Bus protocol reported by dongle */ | |
438 | ||
439 | bool intr; /* Use interrupts */ | |
440 | bool poll; /* Use polling */ | |
1d382273 | 441 | atomic_t ipend; /* Device interrupt is pending */ |
5b435de0 AS |
442 | uint spurious; /* Count of spurious interrupts */ |
443 | uint pollrate; /* Ticks between device polls */ | |
444 | uint polltick; /* Tick counter */ | |
5b435de0 | 445 | |
8ae74654 | 446 | #ifdef DEBUG |
5b435de0 AS |
447 | uint console_interval; |
448 | struct brcmf_console console; /* Console output polling support */ | |
449 | uint console_addr; /* Console address from shared struct */ | |
8ae74654 | 450 | #endif /* DEBUG */ |
5b435de0 | 451 | |
5b435de0 AS |
452 | uint clkstate; /* State of sd and backplane clock(s) */ |
453 | bool activity; /* Activity flag for clock down */ | |
454 | s32 idletime; /* Control for activity timeout */ | |
455 | s32 idlecount; /* Activity timeout counter */ | |
456 | s32 idleclock; /* How to set bus driver when idle */ | |
5b435de0 AS |
457 | bool rxflow_mode; /* Rx flow control mode */ |
458 | bool rxflow; /* Is rx flow control on */ | |
459 | bool alp_only; /* Don't use HT clock (ALP only) */ | |
5b435de0 | 460 | |
5b435de0 | 461 | u8 *ctrl_frame_buf; |
fed7ec44 | 462 | u16 ctrl_frame_len; |
5b435de0 AS |
463 | bool ctrl_frame_stat; |
464 | ||
fed7ec44 HM |
465 | spinlock_t txq_lock; /* protect bus->txq */ |
466 | struct semaphore tx_seq_lock; /* protect bus->tx_seq */ | |
5b435de0 AS |
467 | wait_queue_head_t ctrl_wait; |
468 | wait_queue_head_t dcmd_resp_wait; | |
469 | ||
470 | struct timer_list timer; | |
471 | struct completion watchdog_wait; | |
472 | struct task_struct *watchdog_tsk; | |
473 | bool wd_timer_valid; | |
474 | uint save_ms; | |
475 | ||
f1e68c2e FL |
476 | struct workqueue_struct *brcmf_wq; |
477 | struct work_struct datawork; | |
fccfe930 | 478 | atomic_t dpc_tskcnt; |
5b435de0 | 479 | |
c8bf3484 | 480 | bool txoff; /* Transmit flow-controlled */ |
80969836 | 481 | struct brcmf_sdio_count sdcnt; |
4a3da990 PH |
482 | bool sr_enabled; /* SaveRestore enabled */ |
483 | bool sleeping; /* SDIO bus sleeping */ | |
706478cb FL |
484 | |
485 | u8 tx_hdrlen; /* sdio bus header length for tx packet */ | |
8da9d2c8 | 486 | bool txglom; /* host tx glomming enable flag */ |
e217d1c8 AS |
487 | u16 head_align; /* buffer pointer alignment */ |
488 | u16 sgentry_align; /* scatter-gather buffer alignment */ | |
5b435de0 AS |
489 | }; |
490 | ||
5b435de0 AS |
491 | /* clkstate */ |
492 | #define CLK_NONE 0 | |
493 | #define CLK_SDONLY 1 | |
4a3da990 | 494 | #define CLK_PENDING 2 |
5b435de0 AS |
495 | #define CLK_AVAIL 3 |
496 | ||
8ae74654 | 497 | #ifdef DEBUG |
5b435de0 | 498 | static int qcount[NUMPRIO]; |
8ae74654 | 499 | #endif /* DEBUG */ |
5b435de0 | 500 | |
668761ac | 501 | #define DEFAULT_SDIO_DRIVE_STRENGTH 6 /* in milliamps */ |
5b435de0 AS |
502 | |
503 | #define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL) | |
504 | ||
505 | /* Retry count for register access failures */ | |
506 | static const uint retry_limit = 2; | |
507 | ||
508 | /* Limit on rounding up frames */ | |
509 | static const uint max_roundup = 512; | |
510 | ||
511 | #define ALIGNMENT 4 | |
512 | ||
9d7d6f95 FL |
513 | enum brcmf_sdio_frmtype { |
514 | BRCMF_SDIO_FT_NORMAL, | |
515 | BRCMF_SDIO_FT_SUPER, | |
516 | BRCMF_SDIO_FT_SUB, | |
517 | }; | |
518 | ||
65d80d0b AS |
519 | #define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu)) |
520 | ||
521 | /* SDIO Pad drive strength to select value mappings */ | |
522 | struct sdiod_drive_str { | |
523 | u8 strength; /* Pad Drive Strength in mA */ | |
524 | u8 sel; /* Chip-specific select value */ | |
525 | }; | |
526 | ||
527 | /* SDIO Drive Strength to sel value table for PMU Rev 11 (1.8V) */ | |
528 | static const struct sdiod_drive_str sdiod_drvstr_tab1_1v8[] = { | |
529 | {32, 0x6}, | |
530 | {26, 0x7}, | |
531 | {22, 0x4}, | |
532 | {16, 0x5}, | |
533 | {12, 0x2}, | |
534 | {8, 0x3}, | |
535 | {4, 0x0}, | |
536 | {0, 0x1} | |
537 | }; | |
538 | ||
539 | /* SDIO Drive Strength to sel value table for PMU Rev 13 (1.8v) */ | |
540 | static const struct sdiod_drive_str sdiod_drive_strength_tab5_1v8[] = { | |
541 | {6, 0x7}, | |
542 | {5, 0x6}, | |
543 | {4, 0x5}, | |
544 | {3, 0x4}, | |
545 | {2, 0x2}, | |
546 | {1, 0x1}, | |
547 | {0, 0x0} | |
548 | }; | |
549 | ||
550 | /* SDIO Drive Strength to sel value table for PMU Rev 17 (1.8v) */ | |
551 | static const struct sdiod_drive_str sdiod_drvstr_tab6_1v8[] = { | |
552 | {3, 0x3}, | |
553 | {2, 0x2}, | |
554 | {1, 0x1}, | |
555 | {0, 0x0} }; | |
556 | ||
557 | /* SDIO Drive Strength to sel value table for 43143 PMU Rev 17 (3.3V) */ | |
558 | static const struct sdiod_drive_str sdiod_drvstr_tab2_3v3[] = { | |
559 | {16, 0x7}, | |
560 | {12, 0x5}, | |
561 | {8, 0x3}, | |
562 | {4, 0x1} | |
563 | }; | |
564 | ||
f2c44fe7 HM |
565 | #define BCM43143_FIRMWARE_NAME "brcm/brcmfmac43143-sdio.bin" |
566 | #define BCM43143_NVRAM_NAME "brcm/brcmfmac43143-sdio.txt" | |
567 | #define BCM43241B0_FIRMWARE_NAME "brcm/brcmfmac43241b0-sdio.bin" | |
568 | #define BCM43241B0_NVRAM_NAME "brcm/brcmfmac43241b0-sdio.txt" | |
569 | #define BCM43241B4_FIRMWARE_NAME "brcm/brcmfmac43241b4-sdio.bin" | |
570 | #define BCM43241B4_NVRAM_NAME "brcm/brcmfmac43241b4-sdio.txt" | |
571 | #define BCM4329_FIRMWARE_NAME "brcm/brcmfmac4329-sdio.bin" | |
572 | #define BCM4329_NVRAM_NAME "brcm/brcmfmac4329-sdio.txt" | |
573 | #define BCM4330_FIRMWARE_NAME "brcm/brcmfmac4330-sdio.bin" | |
574 | #define BCM4330_NVRAM_NAME "brcm/brcmfmac4330-sdio.txt" | |
575 | #define BCM4334_FIRMWARE_NAME "brcm/brcmfmac4334-sdio.bin" | |
576 | #define BCM4334_NVRAM_NAME "brcm/brcmfmac4334-sdio.txt" | |
577 | #define BCM4335_FIRMWARE_NAME "brcm/brcmfmac4335-sdio.bin" | |
578 | #define BCM4335_NVRAM_NAME "brcm/brcmfmac4335-sdio.txt" | |
11e69c36 AS |
579 | #define BCM43362_FIRMWARE_NAME "brcm/brcmfmac43362-sdio.bin" |
580 | #define BCM43362_NVRAM_NAME "brcm/brcmfmac43362-sdio.txt" | |
bed89b64 FL |
581 | #define BCM4339_FIRMWARE_NAME "brcm/brcmfmac4339-sdio.bin" |
582 | #define BCM4339_NVRAM_NAME "brcm/brcmfmac4339-sdio.txt" | |
a797ca1e FL |
583 | #define BCM4354_FIRMWARE_NAME "brcm/brcmfmac4354-sdio.bin" |
584 | #define BCM4354_NVRAM_NAME "brcm/brcmfmac4354-sdio.txt" | |
f2c44fe7 HM |
585 | |
586 | MODULE_FIRMWARE(BCM43143_FIRMWARE_NAME); | |
587 | MODULE_FIRMWARE(BCM43143_NVRAM_NAME); | |
588 | MODULE_FIRMWARE(BCM43241B0_FIRMWARE_NAME); | |
589 | MODULE_FIRMWARE(BCM43241B0_NVRAM_NAME); | |
590 | MODULE_FIRMWARE(BCM43241B4_FIRMWARE_NAME); | |
591 | MODULE_FIRMWARE(BCM43241B4_NVRAM_NAME); | |
592 | MODULE_FIRMWARE(BCM4329_FIRMWARE_NAME); | |
593 | MODULE_FIRMWARE(BCM4329_NVRAM_NAME); | |
594 | MODULE_FIRMWARE(BCM4330_FIRMWARE_NAME); | |
595 | MODULE_FIRMWARE(BCM4330_NVRAM_NAME); | |
596 | MODULE_FIRMWARE(BCM4334_FIRMWARE_NAME); | |
597 | MODULE_FIRMWARE(BCM4334_NVRAM_NAME); | |
598 | MODULE_FIRMWARE(BCM4335_FIRMWARE_NAME); | |
599 | MODULE_FIRMWARE(BCM4335_NVRAM_NAME); | |
11e69c36 AS |
600 | MODULE_FIRMWARE(BCM43362_FIRMWARE_NAME); |
601 | MODULE_FIRMWARE(BCM43362_NVRAM_NAME); | |
bed89b64 FL |
602 | MODULE_FIRMWARE(BCM4339_FIRMWARE_NAME); |
603 | MODULE_FIRMWARE(BCM4339_NVRAM_NAME); | |
a797ca1e FL |
604 | MODULE_FIRMWARE(BCM4354_FIRMWARE_NAME); |
605 | MODULE_FIRMWARE(BCM4354_NVRAM_NAME); | |
f2c44fe7 HM |
606 | |
607 | struct brcmf_firmware_names { | |
608 | u32 chipid; | |
609 | u32 revmsk; | |
610 | const char *bin; | |
611 | const char *nv; | |
612 | }; | |
613 | ||
614 | enum brcmf_firmware_type { | |
615 | BRCMF_FIRMWARE_BIN, | |
616 | BRCMF_FIRMWARE_NVRAM | |
617 | }; | |
618 | ||
619 | #define BRCMF_FIRMWARE_NVRAM(name) \ | |
620 | name ## _FIRMWARE_NAME, name ## _NVRAM_NAME | |
621 | ||
622 | static const struct brcmf_firmware_names brcmf_fwname_data[] = { | |
623 | { BCM43143_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM43143) }, | |
624 | { BCM43241_CHIP_ID, 0x0000001F, BRCMF_FIRMWARE_NVRAM(BCM43241B0) }, | |
625 | { BCM43241_CHIP_ID, 0xFFFFFFE0, BRCMF_FIRMWARE_NVRAM(BCM43241B4) }, | |
626 | { BCM4329_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4329) }, | |
627 | { BCM4330_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4330) }, | |
628 | { BCM4334_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4334) }, | |
bed89b64 | 629 | { BCM4335_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4335) }, |
11e69c36 | 630 | { BCM43362_CHIP_ID, 0xFFFFFFFE, BRCMF_FIRMWARE_NVRAM(BCM43362) }, |
a797ca1e FL |
631 | { BCM4339_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4339) }, |
632 | { BCM4354_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4354) } | |
f2c44fe7 HM |
633 | }; |
634 | ||
635 | ||
82d7f3c1 | 636 | static const struct firmware *brcmf_sdio_get_fw(struct brcmf_sdio *bus, |
f2c44fe7 HM |
637 | enum brcmf_firmware_type type) |
638 | { | |
639 | const struct firmware *fw; | |
640 | const char *name; | |
641 | int err, i; | |
642 | ||
643 | for (i = 0; i < ARRAY_SIZE(brcmf_fwname_data); i++) { | |
644 | if (brcmf_fwname_data[i].chipid == bus->ci->chip && | |
645 | brcmf_fwname_data[i].revmsk & BIT(bus->ci->chiprev)) { | |
646 | switch (type) { | |
647 | case BRCMF_FIRMWARE_BIN: | |
648 | name = brcmf_fwname_data[i].bin; | |
649 | break; | |
650 | case BRCMF_FIRMWARE_NVRAM: | |
651 | name = brcmf_fwname_data[i].nv; | |
652 | break; | |
653 | default: | |
654 | brcmf_err("invalid firmware type (%d)\n", type); | |
655 | return NULL; | |
656 | } | |
657 | goto found; | |
658 | } | |
659 | } | |
660 | brcmf_err("Unknown chipid %d [%d]\n", | |
661 | bus->ci->chip, bus->ci->chiprev); | |
662 | return NULL; | |
663 | ||
664 | found: | |
665 | err = request_firmware(&fw, name, &bus->sdiodev->func[2]->dev); | |
666 | if ((err) || (!fw)) { | |
667 | brcmf_err("fail to request firmware %s (%d)\n", name, err); | |
668 | return NULL; | |
669 | } | |
670 | ||
671 | return fw; | |
672 | } | |
673 | ||
5b435de0 AS |
674 | static void pkt_align(struct sk_buff *p, int len, int align) |
675 | { | |
676 | uint datalign; | |
677 | datalign = (unsigned long)(p->data); | |
678 | datalign = roundup(datalign, (align)) - datalign; | |
679 | if (datalign) | |
680 | skb_pull(p, datalign); | |
681 | __skb_trim(p, len); | |
682 | } | |
683 | ||
684 | /* To check if there's window offered */ | |
e92eedf4 | 685 | static bool data_ok(struct brcmf_sdio *bus) |
5b435de0 AS |
686 | { |
687 | return (u8)(bus->tx_max - bus->tx_seq) != 0 && | |
688 | ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0; | |
689 | } | |
690 | ||
691 | /* | |
692 | * Reads a register in the SDIO hardware block. This block occupies a series of | |
693 | * adresses on the 32 bit backplane bus. | |
694 | */ | |
cb7cf7be | 695 | static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) |
5b435de0 | 696 | { |
cb7cf7be | 697 | struct brcmf_core *core; |
79ae3957 | 698 | int ret; |
58692750 | 699 | |
cb7cf7be AS |
700 | core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); |
701 | *regvar = brcmf_sdiod_regrl(bus->sdiodev, core->base + offset, &ret); | |
58692750 FL |
702 | |
703 | return ret; | |
5b435de0 AS |
704 | } |
705 | ||
cb7cf7be | 706 | static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset) |
5b435de0 | 707 | { |
cb7cf7be | 708 | struct brcmf_core *core; |
e13ce26b | 709 | int ret; |
58692750 | 710 | |
cb7cf7be AS |
711 | core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); |
712 | brcmf_sdiod_regwl(bus->sdiodev, core->base + reg_offset, regval, &ret); | |
58692750 FL |
713 | |
714 | return ret; | |
5b435de0 AS |
715 | } |
716 | ||
4a3da990 | 717 | static int |
82d7f3c1 | 718 | brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on) |
4a3da990 PH |
719 | { |
720 | u8 wr_val = 0, rd_val, cmp_val, bmask; | |
721 | int err = 0; | |
722 | int try_cnt = 0; | |
723 | ||
8a385ba5 | 724 | brcmf_dbg(TRACE, "Enter: on=%d\n", on); |
4a3da990 PH |
725 | |
726 | wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT); | |
727 | /* 1st KSO write goes to AOS wake up core if device is asleep */ | |
a39be27b AS |
728 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
729 | wr_val, &err); | |
4a3da990 PH |
730 | |
731 | if (on) { | |
732 | /* device WAKEUP through KSO: | |
733 | * write bit 0 & read back until | |
734 | * both bits 0 (kso bit) & 1 (dev on status) are set | |
735 | */ | |
736 | cmp_val = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK | | |
737 | SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK; | |
738 | bmask = cmp_val; | |
739 | usleep_range(2000, 3000); | |
740 | } else { | |
741 | /* Put device to sleep, turn off KSO */ | |
742 | cmp_val = 0; | |
743 | /* only check for bit0, bit1(dev on status) may not | |
744 | * get cleared right away | |
745 | */ | |
746 | bmask = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK; | |
747 | } | |
748 | ||
749 | do { | |
750 | /* reliable KSO bit set/clr: | |
751 | * the sdiod sleep write access is synced to PMU 32khz clk | |
752 | * just one write attempt may fail, | |
753 | * read it back until it matches written value | |
754 | */ | |
a39be27b AS |
755 | rd_val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
756 | &err); | |
4a3da990 PH |
757 | if (((rd_val & bmask) == cmp_val) && !err) |
758 | break; | |
8a385ba5 | 759 | |
4a3da990 | 760 | udelay(KSO_WAIT_US); |
a39be27b AS |
761 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
762 | wr_val, &err); | |
4a3da990 PH |
763 | } while (try_cnt++ < MAX_KSO_ATTEMPTS); |
764 | ||
8a385ba5 AS |
765 | if (try_cnt > 2) |
766 | brcmf_dbg(SDIO, "try_cnt=%d rd_val=0x%x err=%d\n", try_cnt, | |
767 | rd_val, err); | |
768 | ||
769 | if (try_cnt > MAX_KSO_ATTEMPTS) | |
770 | brcmf_err("max tries: rd_val=0x%x err=%d\n", rd_val, err); | |
771 | ||
4a3da990 PH |
772 | return err; |
773 | } | |
774 | ||
5b435de0 AS |
775 | #define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) |
776 | ||
5b435de0 | 777 | /* Turn backplane clock on or off */ |
82d7f3c1 | 778 | static int brcmf_sdio_htclk(struct brcmf_sdio *bus, bool on, bool pendok) |
5b435de0 AS |
779 | { |
780 | int err; | |
781 | u8 clkctl, clkreq, devctl; | |
782 | unsigned long timeout; | |
783 | ||
c3203374 | 784 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
785 | |
786 | clkctl = 0; | |
787 | ||
4a3da990 PH |
788 | if (bus->sr_enabled) { |
789 | bus->clkstate = (on ? CLK_AVAIL : CLK_SDONLY); | |
790 | return 0; | |
791 | } | |
792 | ||
5b435de0 AS |
793 | if (on) { |
794 | /* Request HT Avail */ | |
795 | clkreq = | |
796 | bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ; | |
797 | ||
a39be27b AS |
798 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
799 | clkreq, &err); | |
5b435de0 | 800 | if (err) { |
5e8149f5 | 801 | brcmf_err("HT Avail request error: %d\n", err); |
5b435de0 AS |
802 | return -EBADE; |
803 | } | |
804 | ||
5b435de0 | 805 | /* Check current status */ |
a39be27b AS |
806 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
807 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 808 | if (err) { |
5e8149f5 | 809 | brcmf_err("HT Avail read error: %d\n", err); |
5b435de0 AS |
810 | return -EBADE; |
811 | } | |
812 | ||
813 | /* Go to pending and await interrupt if appropriate */ | |
814 | if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) { | |
815 | /* Allow only clock-available interrupt */ | |
a39be27b AS |
816 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
817 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 818 | if (err) { |
5e8149f5 | 819 | brcmf_err("Devctl error setting CA: %d\n", |
5b435de0 AS |
820 | err); |
821 | return -EBADE; | |
822 | } | |
823 | ||
824 | devctl |= SBSDIO_DEVCTL_CA_INT_ONLY; | |
a39be27b AS |
825 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
826 | devctl, &err); | |
c3203374 | 827 | brcmf_dbg(SDIO, "CLKCTL: set PENDING\n"); |
5b435de0 AS |
828 | bus->clkstate = CLK_PENDING; |
829 | ||
830 | return 0; | |
831 | } else if (bus->clkstate == CLK_PENDING) { | |
832 | /* Cancel CA-only interrupt filter */ | |
a39be27b AS |
833 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
834 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 835 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
a39be27b AS |
836 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
837 | devctl, &err); | |
5b435de0 AS |
838 | } |
839 | ||
840 | /* Otherwise, wait here (polling) for HT Avail */ | |
841 | timeout = jiffies + | |
842 | msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000); | |
843 | while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { | |
a39be27b AS |
844 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
845 | SBSDIO_FUNC1_CHIPCLKCSR, | |
846 | &err); | |
5b435de0 AS |
847 | if (time_after(jiffies, timeout)) |
848 | break; | |
849 | else | |
850 | usleep_range(5000, 10000); | |
851 | } | |
852 | if (err) { | |
5e8149f5 | 853 | brcmf_err("HT Avail request error: %d\n", err); |
5b435de0 AS |
854 | return -EBADE; |
855 | } | |
856 | if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { | |
5e8149f5 | 857 | brcmf_err("HT Avail timeout (%d): clkctl 0x%02x\n", |
5b435de0 AS |
858 | PMU_MAX_TRANSITION_DLY, clkctl); |
859 | return -EBADE; | |
860 | } | |
861 | ||
862 | /* Mark clock available */ | |
863 | bus->clkstate = CLK_AVAIL; | |
c3203374 | 864 | brcmf_dbg(SDIO, "CLKCTL: turned ON\n"); |
5b435de0 | 865 | |
8ae74654 | 866 | #if defined(DEBUG) |
23677ce3 | 867 | if (!bus->alp_only) { |
5b435de0 | 868 | if (SBSDIO_ALPONLY(clkctl)) |
5e8149f5 | 869 | brcmf_err("HT Clock should be on\n"); |
5b435de0 | 870 | } |
8ae74654 | 871 | #endif /* defined (DEBUG) */ |
5b435de0 | 872 | |
5b435de0 AS |
873 | } else { |
874 | clkreq = 0; | |
875 | ||
876 | if (bus->clkstate == CLK_PENDING) { | |
877 | /* Cancel CA-only interrupt filter */ | |
a39be27b AS |
878 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
879 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 880 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
a39be27b AS |
881 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
882 | devctl, &err); | |
5b435de0 AS |
883 | } |
884 | ||
885 | bus->clkstate = CLK_SDONLY; | |
a39be27b AS |
886 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
887 | clkreq, &err); | |
c3203374 | 888 | brcmf_dbg(SDIO, "CLKCTL: turned OFF\n"); |
5b435de0 | 889 | if (err) { |
5e8149f5 | 890 | brcmf_err("Failed access turning clock off: %d\n", |
5b435de0 AS |
891 | err); |
892 | return -EBADE; | |
893 | } | |
894 | } | |
895 | return 0; | |
896 | } | |
897 | ||
898 | /* Change idle/active SD state */ | |
82d7f3c1 | 899 | static int brcmf_sdio_sdclk(struct brcmf_sdio *bus, bool on) |
5b435de0 | 900 | { |
c3203374 | 901 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
902 | |
903 | if (on) | |
904 | bus->clkstate = CLK_SDONLY; | |
905 | else | |
906 | bus->clkstate = CLK_NONE; | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | /* Transition SD and backplane clock readiness */ | |
82d7f3c1 | 912 | static int brcmf_sdio_clkctl(struct brcmf_sdio *bus, uint target, bool pendok) |
5b435de0 | 913 | { |
8ae74654 | 914 | #ifdef DEBUG |
5b435de0 | 915 | uint oldstate = bus->clkstate; |
8ae74654 | 916 | #endif /* DEBUG */ |
5b435de0 | 917 | |
c3203374 | 918 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
919 | |
920 | /* Early exit if we're already there */ | |
921 | if (bus->clkstate == target) { | |
922 | if (target == CLK_AVAIL) { | |
82d7f3c1 | 923 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 AS |
924 | bus->activity = true; |
925 | } | |
926 | return 0; | |
927 | } | |
928 | ||
929 | switch (target) { | |
930 | case CLK_AVAIL: | |
931 | /* Make sure SD clock is available */ | |
932 | if (bus->clkstate == CLK_NONE) | |
82d7f3c1 | 933 | brcmf_sdio_sdclk(bus, true); |
5b435de0 | 934 | /* Now request HT Avail on the backplane */ |
82d7f3c1 AS |
935 | brcmf_sdio_htclk(bus, true, pendok); |
936 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); | |
5b435de0 AS |
937 | bus->activity = true; |
938 | break; | |
939 | ||
940 | case CLK_SDONLY: | |
941 | /* Remove HT request, or bring up SD clock */ | |
942 | if (bus->clkstate == CLK_NONE) | |
82d7f3c1 | 943 | brcmf_sdio_sdclk(bus, true); |
5b435de0 | 944 | else if (bus->clkstate == CLK_AVAIL) |
82d7f3c1 | 945 | brcmf_sdio_htclk(bus, false, false); |
5b435de0 | 946 | else |
5e8149f5 | 947 | brcmf_err("request for %d -> %d\n", |
5b435de0 | 948 | bus->clkstate, target); |
82d7f3c1 | 949 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 AS |
950 | break; |
951 | ||
952 | case CLK_NONE: | |
953 | /* Make sure to remove HT request */ | |
954 | if (bus->clkstate == CLK_AVAIL) | |
82d7f3c1 | 955 | brcmf_sdio_htclk(bus, false, false); |
5b435de0 | 956 | /* Now remove the SD clock */ |
82d7f3c1 AS |
957 | brcmf_sdio_sdclk(bus, false); |
958 | brcmf_sdio_wd_timer(bus, 0); | |
5b435de0 AS |
959 | break; |
960 | } | |
8ae74654 | 961 | #ifdef DEBUG |
c3203374 | 962 | brcmf_dbg(SDIO, "%d -> %d\n", oldstate, bus->clkstate); |
8ae74654 | 963 | #endif /* DEBUG */ |
5b435de0 AS |
964 | |
965 | return 0; | |
966 | } | |
967 | ||
4a3da990 | 968 | static int |
82d7f3c1 | 969 | brcmf_sdio_bus_sleep(struct brcmf_sdio *bus, bool sleep, bool pendok) |
4a3da990 PH |
970 | { |
971 | int err = 0; | |
8a385ba5 | 972 | u8 clkcsr; |
82030d6d AS |
973 | |
974 | brcmf_dbg(SDIO, "Enter: request %s currently %s\n", | |
4a3da990 PH |
975 | (sleep ? "SLEEP" : "WAKE"), |
976 | (bus->sleeping ? "SLEEP" : "WAKE")); | |
977 | ||
978 | /* If SR is enabled control bus state with KSO */ | |
979 | if (bus->sr_enabled) { | |
980 | /* Done if we're already in the requested state */ | |
981 | if (sleep == bus->sleeping) | |
982 | goto end; | |
983 | ||
984 | /* Going to sleep */ | |
985 | if (sleep) { | |
986 | /* Don't sleep if something is pending */ | |
987 | if (atomic_read(&bus->intstatus) || | |
988 | atomic_read(&bus->ipend) > 0 || | |
989 | (!atomic_read(&bus->fcstate) && | |
990 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && | |
8a385ba5 AS |
991 | data_ok(bus))) { |
992 | err = -EBUSY; | |
993 | goto done; | |
994 | } | |
995 | ||
996 | clkcsr = brcmf_sdiod_regrb(bus->sdiodev, | |
997 | SBSDIO_FUNC1_CHIPCLKCSR, | |
998 | &err); | |
999 | if ((clkcsr & SBSDIO_CSR_MASK) == 0) { | |
1000 | brcmf_dbg(SDIO, "no clock, set ALP\n"); | |
1001 | brcmf_sdiod_regwb(bus->sdiodev, | |
1002 | SBSDIO_FUNC1_CHIPCLKCSR, | |
1003 | SBSDIO_ALP_AVAIL_REQ, &err); | |
1004 | } | |
82d7f3c1 | 1005 | err = brcmf_sdio_kso_control(bus, false); |
4a3da990 PH |
1006 | /* disable watchdog */ |
1007 | if (!err) | |
82d7f3c1 | 1008 | brcmf_sdio_wd_timer(bus, 0); |
4a3da990 PH |
1009 | } else { |
1010 | bus->idlecount = 0; | |
82d7f3c1 | 1011 | err = brcmf_sdio_kso_control(bus, true); |
4a3da990 PH |
1012 | } |
1013 | if (!err) { | |
1014 | /* Change state */ | |
1015 | bus->sleeping = sleep; | |
1016 | brcmf_dbg(SDIO, "new state %s\n", | |
1017 | (sleep ? "SLEEP" : "WAKE")); | |
1018 | } else { | |
1019 | brcmf_err("error while changing bus sleep state %d\n", | |
1020 | err); | |
8a385ba5 | 1021 | goto done; |
4a3da990 PH |
1022 | } |
1023 | } | |
1024 | ||
1025 | end: | |
1026 | /* control clocks */ | |
1027 | if (sleep) { | |
1028 | if (!bus->sr_enabled) | |
82d7f3c1 | 1029 | brcmf_sdio_clkctl(bus, CLK_NONE, pendok); |
4a3da990 | 1030 | } else { |
82d7f3c1 | 1031 | brcmf_sdio_clkctl(bus, CLK_AVAIL, pendok); |
4a3da990 | 1032 | } |
8a385ba5 AS |
1033 | done: |
1034 | brcmf_dbg(SDIO, "Exit: err=%d\n", err); | |
4a3da990 PH |
1035 | return err; |
1036 | ||
1037 | } | |
1038 | ||
0801e6c5 DK |
1039 | #ifdef DEBUG |
1040 | static inline bool brcmf_sdio_valid_shared_address(u32 addr) | |
1041 | { | |
1042 | return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)); | |
1043 | } | |
1044 | ||
1045 | static int brcmf_sdio_readshared(struct brcmf_sdio *bus, | |
1046 | struct sdpcm_shared *sh) | |
1047 | { | |
1048 | u32 addr; | |
1049 | int rv; | |
1050 | u32 shaddr = 0; | |
1051 | struct sdpcm_shared_le sh_le; | |
1052 | __le32 addr_le; | |
1053 | ||
1054 | shaddr = bus->ci->rambase + bus->ramsize - 4; | |
1055 | ||
1056 | /* | |
1057 | * Read last word in socram to determine | |
1058 | * address of sdpcm_shared structure | |
1059 | */ | |
1060 | sdio_claim_host(bus->sdiodev->func[1]); | |
1061 | brcmf_sdio_bus_sleep(bus, false, false); | |
1062 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4); | |
1063 | sdio_release_host(bus->sdiodev->func[1]); | |
1064 | if (rv < 0) | |
1065 | return rv; | |
1066 | ||
1067 | addr = le32_to_cpu(addr_le); | |
1068 | ||
1069 | brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr); | |
1070 | ||
1071 | /* | |
1072 | * Check if addr is valid. | |
1073 | * NVRAM length at the end of memory should have been overwritten. | |
1074 | */ | |
1075 | if (!brcmf_sdio_valid_shared_address(addr)) { | |
1076 | brcmf_err("invalid sdpcm_shared address 0x%08X\n", | |
1077 | addr); | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | ||
1081 | /* Read hndrte_shared structure */ | |
1082 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le, | |
1083 | sizeof(struct sdpcm_shared_le)); | |
1084 | if (rv < 0) | |
1085 | return rv; | |
1086 | ||
1087 | /* Endianness */ | |
1088 | sh->flags = le32_to_cpu(sh_le.flags); | |
1089 | sh->trap_addr = le32_to_cpu(sh_le.trap_addr); | |
1090 | sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr); | |
1091 | sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr); | |
1092 | sh->assert_line = le32_to_cpu(sh_le.assert_line); | |
1093 | sh->console_addr = le32_to_cpu(sh_le.console_addr); | |
1094 | sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr); | |
1095 | ||
1096 | if ((sh->flags & SDPCM_SHARED_VERSION_MASK) > SDPCM_SHARED_VERSION) { | |
1097 | brcmf_err("sdpcm shared version unsupported: dhd %d dongle %d\n", | |
1098 | SDPCM_SHARED_VERSION, | |
1099 | sh->flags & SDPCM_SHARED_VERSION_MASK); | |
1100 | return -EPROTO; | |
1101 | } | |
1102 | ||
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus) | |
1107 | { | |
1108 | struct sdpcm_shared sh; | |
1109 | ||
1110 | if (brcmf_sdio_readshared(bus, &sh) == 0) | |
1111 | bus->console_addr = sh.console_addr; | |
1112 | } | |
1113 | #else | |
1114 | static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus) | |
1115 | { | |
1116 | } | |
1117 | #endif /* DEBUG */ | |
1118 | ||
82d7f3c1 | 1119 | static u32 brcmf_sdio_hostmail(struct brcmf_sdio *bus) |
5b435de0 AS |
1120 | { |
1121 | u32 intstatus = 0; | |
1122 | u32 hmb_data; | |
1123 | u8 fcbits; | |
58692750 | 1124 | int ret; |
5b435de0 | 1125 | |
c3203374 | 1126 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
1127 | |
1128 | /* Read mailbox data and ack that we did so */ | |
58692750 FL |
1129 | ret = r_sdreg32(bus, &hmb_data, |
1130 | offsetof(struct sdpcmd_regs, tohostmailboxdata)); | |
5b435de0 | 1131 | |
58692750 | 1132 | if (ret == 0) |
5b435de0 | 1133 | w_sdreg32(bus, SMB_INT_ACK, |
58692750 | 1134 | offsetof(struct sdpcmd_regs, tosbmailbox)); |
80969836 | 1135 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
1136 | |
1137 | /* Dongle recomposed rx frames, accept them again */ | |
1138 | if (hmb_data & HMB_DATA_NAKHANDLED) { | |
c3203374 | 1139 | brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n", |
5b435de0 AS |
1140 | bus->rx_seq); |
1141 | if (!bus->rxskip) | |
5e8149f5 | 1142 | brcmf_err("unexpected NAKHANDLED!\n"); |
5b435de0 AS |
1143 | |
1144 | bus->rxskip = false; | |
1145 | intstatus |= I_HMB_FRAME_IND; | |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * DEVREADY does not occur with gSPI. | |
1150 | */ | |
1151 | if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { | |
1152 | bus->sdpcm_ver = | |
1153 | (hmb_data & HMB_DATA_VERSION_MASK) >> | |
1154 | HMB_DATA_VERSION_SHIFT; | |
1155 | if (bus->sdpcm_ver != SDPCM_PROT_VERSION) | |
5e8149f5 | 1156 | brcmf_err("Version mismatch, dongle reports %d, " |
5b435de0 AS |
1157 | "expecting %d\n", |
1158 | bus->sdpcm_ver, SDPCM_PROT_VERSION); | |
1159 | else | |
c3203374 | 1160 | brcmf_dbg(SDIO, "Dongle ready, protocol version %d\n", |
5b435de0 | 1161 | bus->sdpcm_ver); |
0801e6c5 DK |
1162 | |
1163 | /* | |
1164 | * Retrieve console state address now that firmware should have | |
1165 | * updated it. | |
1166 | */ | |
1167 | brcmf_sdio_get_console_addr(bus); | |
5b435de0 AS |
1168 | } |
1169 | ||
1170 | /* | |
1171 | * Flow Control has been moved into the RX headers and this out of band | |
1172 | * method isn't used any more. | |
1173 | * remaining backward compatible with older dongles. | |
1174 | */ | |
1175 | if (hmb_data & HMB_DATA_FC) { | |
1176 | fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> | |
1177 | HMB_DATA_FCDATA_SHIFT; | |
1178 | ||
1179 | if (fcbits & ~bus->flowcontrol) | |
80969836 | 1180 | bus->sdcnt.fc_xoff++; |
5b435de0 AS |
1181 | |
1182 | if (bus->flowcontrol & ~fcbits) | |
80969836 | 1183 | bus->sdcnt.fc_xon++; |
5b435de0 | 1184 | |
80969836 | 1185 | bus->sdcnt.fc_rcvd++; |
5b435de0 AS |
1186 | bus->flowcontrol = fcbits; |
1187 | } | |
1188 | ||
1189 | /* Shouldn't be any others */ | |
1190 | if (hmb_data & ~(HMB_DATA_DEVREADY | | |
1191 | HMB_DATA_NAKHANDLED | | |
1192 | HMB_DATA_FC | | |
1193 | HMB_DATA_FWREADY | | |
1194 | HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) | |
5e8149f5 | 1195 | brcmf_err("Unknown mailbox data content: 0x%02x\n", |
5b435de0 AS |
1196 | hmb_data); |
1197 | ||
1198 | return intstatus; | |
1199 | } | |
1200 | ||
82d7f3c1 | 1201 | static void brcmf_sdio_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx) |
5b435de0 AS |
1202 | { |
1203 | uint retries = 0; | |
1204 | u16 lastrbc; | |
1205 | u8 hi, lo; | |
1206 | int err; | |
1207 | ||
5e8149f5 | 1208 | brcmf_err("%sterminate frame%s\n", |
5b435de0 AS |
1209 | abort ? "abort command, " : "", |
1210 | rtx ? ", send NAK" : ""); | |
1211 | ||
1212 | if (abort) | |
a39be27b | 1213 | brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2); |
5b435de0 | 1214 | |
a39be27b AS |
1215 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, |
1216 | SFC_RF_TERM, &err); | |
80969836 | 1217 | bus->sdcnt.f1regdata++; |
5b435de0 AS |
1218 | |
1219 | /* Wait until the packet has been flushed (device/FIFO stable) */ | |
1220 | for (lastrbc = retries = 0xffff; retries > 0; retries--) { | |
a39be27b AS |
1221 | hi = brcmf_sdiod_regrb(bus->sdiodev, |
1222 | SBSDIO_FUNC1_RFRAMEBCHI, &err); | |
1223 | lo = brcmf_sdiod_regrb(bus->sdiodev, | |
1224 | SBSDIO_FUNC1_RFRAMEBCLO, &err); | |
80969836 | 1225 | bus->sdcnt.f1regdata += 2; |
5b435de0 AS |
1226 | |
1227 | if ((hi == 0) && (lo == 0)) | |
1228 | break; | |
1229 | ||
1230 | if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) { | |
5e8149f5 | 1231 | brcmf_err("count growing: last 0x%04x now 0x%04x\n", |
5b435de0 AS |
1232 | lastrbc, (hi << 8) + lo); |
1233 | } | |
1234 | lastrbc = (hi << 8) + lo; | |
1235 | } | |
1236 | ||
1237 | if (!retries) | |
5e8149f5 | 1238 | brcmf_err("count never zeroed: last 0x%04x\n", lastrbc); |
5b435de0 | 1239 | else |
c3203374 | 1240 | brcmf_dbg(SDIO, "flush took %d iterations\n", 0xffff - retries); |
5b435de0 AS |
1241 | |
1242 | if (rtx) { | |
80969836 | 1243 | bus->sdcnt.rxrtx++; |
58692750 FL |
1244 | err = w_sdreg32(bus, SMB_NAK, |
1245 | offsetof(struct sdpcmd_regs, tosbmailbox)); | |
5b435de0 | 1246 | |
80969836 | 1247 | bus->sdcnt.f1regdata++; |
58692750 | 1248 | if (err == 0) |
5b435de0 AS |
1249 | bus->rxskip = true; |
1250 | } | |
1251 | ||
1252 | /* Clear partial in any case */ | |
4754fcee | 1253 | bus->cur_read.len = 0; |
5b435de0 AS |
1254 | } |
1255 | ||
81c7883c HM |
1256 | static void brcmf_sdio_txfail(struct brcmf_sdio *bus) |
1257 | { | |
1258 | struct brcmf_sdio_dev *sdiodev = bus->sdiodev; | |
1259 | u8 i, hi, lo; | |
1260 | ||
1261 | /* On failure, abort the command and terminate the frame */ | |
1262 | brcmf_err("sdio error, abort command and terminate frame\n"); | |
1263 | bus->sdcnt.tx_sderrs++; | |
1264 | ||
1265 | brcmf_sdiod_abort(sdiodev, SDIO_FUNC_2); | |
1266 | brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, NULL); | |
1267 | bus->sdcnt.f1regdata++; | |
1268 | ||
1269 | for (i = 0; i < 3; i++) { | |
1270 | hi = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCHI, NULL); | |
1271 | lo = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCLO, NULL); | |
1272 | bus->sdcnt.f1regdata += 2; | |
1273 | if ((hi == 0) && (lo == 0)) | |
1274 | break; | |
1275 | } | |
1276 | } | |
1277 | ||
9a95e60e | 1278 | /* return total length of buffer chain */ |
82d7f3c1 | 1279 | static uint brcmf_sdio_glom_len(struct brcmf_sdio *bus) |
9a95e60e AS |
1280 | { |
1281 | struct sk_buff *p; | |
1282 | uint total; | |
1283 | ||
1284 | total = 0; | |
1285 | skb_queue_walk(&bus->glom, p) | |
1286 | total += p->len; | |
1287 | return total; | |
1288 | } | |
1289 | ||
82d7f3c1 | 1290 | static void brcmf_sdio_free_glom(struct brcmf_sdio *bus) |
046808da AS |
1291 | { |
1292 | struct sk_buff *cur, *next; | |
1293 | ||
1294 | skb_queue_walk_safe(&bus->glom, cur, next) { | |
1295 | skb_unlink(cur, &bus->glom); | |
1296 | brcmu_pkt_buf_free_skb(cur); | |
1297 | } | |
1298 | } | |
1299 | ||
6bc52319 FL |
1300 | /** |
1301 | * brcmfmac sdio bus specific header | |
1302 | * This is the lowest layer header wrapped on the packets transmitted between | |
1303 | * host and WiFi dongle which contains information needed for SDIO core and | |
1304 | * firmware | |
1305 | * | |
8da9d2c8 FL |
1306 | * It consists of 3 parts: hardware header, hardware extension header and |
1307 | * software header | |
6bc52319 FL |
1308 | * hardware header (frame tag) - 4 bytes |
1309 | * Byte 0~1: Frame length | |
1310 | * Byte 2~3: Checksum, bit-wise inverse of frame length | |
8da9d2c8 FL |
1311 | * hardware extension header - 8 bytes |
1312 | * Tx glom mode only, N/A for Rx or normal Tx | |
1313 | * Byte 0~1: Packet length excluding hw frame tag | |
1314 | * Byte 2: Reserved | |
1315 | * Byte 3: Frame flags, bit 0: last frame indication | |
1316 | * Byte 4~5: Reserved | |
1317 | * Byte 6~7: Tail padding length | |
6bc52319 FL |
1318 | * software header - 8 bytes |
1319 | * Byte 0: Rx/Tx sequence number | |
1320 | * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag | |
1321 | * Byte 2: Length of next data frame, reserved for Tx | |
1322 | * Byte 3: Data offset | |
1323 | * Byte 4: Flow control bits, reserved for Tx | |
1324 | * Byte 5: Maximum Sequence number allowed by firmware for Tx, N/A for Tx packet | |
1325 | * Byte 6~7: Reserved | |
1326 | */ | |
1327 | #define SDPCM_HWHDR_LEN 4 | |
8da9d2c8 | 1328 | #define SDPCM_HWEXT_LEN 8 |
6bc52319 FL |
1329 | #define SDPCM_SWHDR_LEN 8 |
1330 | #define SDPCM_HDRLEN (SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN) | |
6bc52319 FL |
1331 | /* software header */ |
1332 | #define SDPCM_SEQ_MASK 0x000000ff | |
1333 | #define SDPCM_SEQ_WRAP 256 | |
1334 | #define SDPCM_CHANNEL_MASK 0x00000f00 | |
1335 | #define SDPCM_CHANNEL_SHIFT 8 | |
1336 | #define SDPCM_CONTROL_CHANNEL 0 /* Control */ | |
1337 | #define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication */ | |
1338 | #define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv */ | |
1339 | #define SDPCM_GLOM_CHANNEL 3 /* Coalesced packets */ | |
1340 | #define SDPCM_TEST_CHANNEL 15 /* Test/debug packets */ | |
1341 | #define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80) | |
1342 | #define SDPCM_NEXTLEN_MASK 0x00ff0000 | |
1343 | #define SDPCM_NEXTLEN_SHIFT 16 | |
1344 | #define SDPCM_DOFFSET_MASK 0xff000000 | |
1345 | #define SDPCM_DOFFSET_SHIFT 24 | |
1346 | #define SDPCM_FCMASK_MASK 0x000000ff | |
1347 | #define SDPCM_WINDOW_MASK 0x0000ff00 | |
1348 | #define SDPCM_WINDOW_SHIFT 8 | |
1349 | ||
1350 | static inline u8 brcmf_sdio_getdatoffset(u8 *swheader) | |
1351 | { | |
1352 | u32 hdrvalue; | |
1353 | hdrvalue = *(u32 *)swheader; | |
1354 | return (u8)((hdrvalue & SDPCM_DOFFSET_MASK) >> SDPCM_DOFFSET_SHIFT); | |
1355 | } | |
1356 | ||
1357 | static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header, | |
1358 | struct brcmf_sdio_hdrinfo *rd, | |
1359 | enum brcmf_sdio_frmtype type) | |
4754fcee FL |
1360 | { |
1361 | u16 len, checksum; | |
1362 | u8 rx_seq, fc, tx_seq_max; | |
6bc52319 | 1363 | u32 swheader; |
4754fcee | 1364 | |
4b776961 | 1365 | trace_brcmf_sdpcm_hdr(SDPCM_RX, header); |
76584ece | 1366 | |
6bc52319 | 1367 | /* hw header */ |
4754fcee FL |
1368 | len = get_unaligned_le16(header); |
1369 | checksum = get_unaligned_le16(header + sizeof(u16)); | |
1370 | /* All zero means no more to read */ | |
1371 | if (!(len | checksum)) { | |
1372 | bus->rxpending = false; | |
10510589 | 1373 | return -ENODATA; |
4754fcee FL |
1374 | } |
1375 | if ((u16)(~(len ^ checksum))) { | |
5e8149f5 | 1376 | brcmf_err("HW header checksum error\n"); |
4754fcee | 1377 | bus->sdcnt.rx_badhdr++; |
82d7f3c1 | 1378 | brcmf_sdio_rxfail(bus, false, false); |
10510589 | 1379 | return -EIO; |
4754fcee FL |
1380 | } |
1381 | if (len < SDPCM_HDRLEN) { | |
5e8149f5 | 1382 | brcmf_err("HW header length error\n"); |
10510589 | 1383 | return -EPROTO; |
4754fcee | 1384 | } |
9d7d6f95 FL |
1385 | if (type == BRCMF_SDIO_FT_SUPER && |
1386 | (roundup(len, bus->blocksize) != rd->len)) { | |
5e8149f5 | 1387 | brcmf_err("HW superframe header length error\n"); |
10510589 | 1388 | return -EPROTO; |
9d7d6f95 FL |
1389 | } |
1390 | if (type == BRCMF_SDIO_FT_SUB && len > rd->len) { | |
5e8149f5 | 1391 | brcmf_err("HW subframe header length error\n"); |
10510589 | 1392 | return -EPROTO; |
9d7d6f95 | 1393 | } |
4754fcee FL |
1394 | rd->len = len; |
1395 | ||
6bc52319 FL |
1396 | /* software header */ |
1397 | header += SDPCM_HWHDR_LEN; | |
1398 | swheader = le32_to_cpu(*(__le32 *)header); | |
1399 | if (type == BRCMF_SDIO_FT_SUPER && SDPCM_GLOMDESC(header)) { | |
5e8149f5 | 1400 | brcmf_err("Glom descriptor found in superframe head\n"); |
9d7d6f95 | 1401 | rd->len = 0; |
10510589 | 1402 | return -EINVAL; |
9d7d6f95 | 1403 | } |
6bc52319 FL |
1404 | rx_seq = (u8)(swheader & SDPCM_SEQ_MASK); |
1405 | rd->channel = (swheader & SDPCM_CHANNEL_MASK) >> SDPCM_CHANNEL_SHIFT; | |
9d7d6f95 FL |
1406 | if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL && |
1407 | type != BRCMF_SDIO_FT_SUPER) { | |
5e8149f5 | 1408 | brcmf_err("HW header length too long\n"); |
4754fcee | 1409 | bus->sdcnt.rx_toolong++; |
82d7f3c1 | 1410 | brcmf_sdio_rxfail(bus, false, false); |
4754fcee | 1411 | rd->len = 0; |
10510589 | 1412 | return -EPROTO; |
4754fcee | 1413 | } |
9d7d6f95 | 1414 | if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) { |
5e8149f5 | 1415 | brcmf_err("Wrong channel for superframe\n"); |
9d7d6f95 | 1416 | rd->len = 0; |
10510589 | 1417 | return -EINVAL; |
9d7d6f95 FL |
1418 | } |
1419 | if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL && | |
1420 | rd->channel != SDPCM_EVENT_CHANNEL) { | |
5e8149f5 | 1421 | brcmf_err("Wrong channel for subframe\n"); |
9d7d6f95 | 1422 | rd->len = 0; |
10510589 | 1423 | return -EINVAL; |
9d7d6f95 | 1424 | } |
6bc52319 | 1425 | rd->dat_offset = brcmf_sdio_getdatoffset(header); |
4754fcee | 1426 | if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) { |
5e8149f5 | 1427 | brcmf_err("seq %d: bad data offset\n", rx_seq); |
4754fcee | 1428 | bus->sdcnt.rx_badhdr++; |
82d7f3c1 | 1429 | brcmf_sdio_rxfail(bus, false, false); |
4754fcee | 1430 | rd->len = 0; |
10510589 | 1431 | return -ENXIO; |
4754fcee FL |
1432 | } |
1433 | if (rd->seq_num != rx_seq) { | |
5e8149f5 | 1434 | brcmf_err("seq %d: sequence number error, expect %d\n", |
4754fcee FL |
1435 | rx_seq, rd->seq_num); |
1436 | bus->sdcnt.rx_badseq++; | |
1437 | rd->seq_num = rx_seq; | |
1438 | } | |
9d7d6f95 FL |
1439 | /* no need to check the reset for subframe */ |
1440 | if (type == BRCMF_SDIO_FT_SUB) | |
10510589 | 1441 | return 0; |
6bc52319 | 1442 | rd->len_nxtfrm = (swheader & SDPCM_NEXTLEN_MASK) >> SDPCM_NEXTLEN_SHIFT; |
4754fcee FL |
1443 | if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) { |
1444 | /* only warm for NON glom packet */ | |
1445 | if (rd->channel != SDPCM_GLOM_CHANNEL) | |
5e8149f5 | 1446 | brcmf_err("seq %d: next length error\n", rx_seq); |
4754fcee FL |
1447 | rd->len_nxtfrm = 0; |
1448 | } | |
6bc52319 FL |
1449 | swheader = le32_to_cpu(*(__le32 *)(header + 4)); |
1450 | fc = swheader & SDPCM_FCMASK_MASK; | |
4754fcee FL |
1451 | if (bus->flowcontrol != fc) { |
1452 | if (~bus->flowcontrol & fc) | |
1453 | bus->sdcnt.fc_xoff++; | |
1454 | if (bus->flowcontrol & ~fc) | |
1455 | bus->sdcnt.fc_xon++; | |
1456 | bus->sdcnt.fc_rcvd++; | |
1457 | bus->flowcontrol = fc; | |
1458 | } | |
6bc52319 | 1459 | tx_seq_max = (swheader & SDPCM_WINDOW_MASK) >> SDPCM_WINDOW_SHIFT; |
4754fcee | 1460 | if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) { |
5e8149f5 | 1461 | brcmf_err("seq %d: max tx seq number error\n", rx_seq); |
4754fcee FL |
1462 | tx_seq_max = bus->tx_seq + 2; |
1463 | } | |
1464 | bus->tx_max = tx_seq_max; | |
1465 | ||
10510589 | 1466 | return 0; |
4754fcee FL |
1467 | } |
1468 | ||
6bc52319 FL |
1469 | static inline void brcmf_sdio_update_hwhdr(u8 *header, u16 frm_length) |
1470 | { | |
1471 | *(__le16 *)header = cpu_to_le16(frm_length); | |
1472 | *(((__le16 *)header) + 1) = cpu_to_le16(~frm_length); | |
1473 | } | |
1474 | ||
1475 | static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header, | |
1476 | struct brcmf_sdio_hdrinfo *hd_info) | |
1477 | { | |
8da9d2c8 FL |
1478 | u32 hdrval; |
1479 | u8 hdr_offset; | |
6bc52319 FL |
1480 | |
1481 | brcmf_sdio_update_hwhdr(header, hd_info->len); | |
8da9d2c8 FL |
1482 | hdr_offset = SDPCM_HWHDR_LEN; |
1483 | ||
1484 | if (bus->txglom) { | |
1485 | hdrval = (hd_info->len - hdr_offset) | (hd_info->lastfrm << 24); | |
1486 | *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval); | |
1487 | hdrval = (u16)hd_info->tail_pad << 16; | |
1488 | *(((__le32 *)(header + hdr_offset)) + 1) = cpu_to_le32(hdrval); | |
1489 | hdr_offset += SDPCM_HWEXT_LEN; | |
1490 | } | |
6bc52319 | 1491 | |
8da9d2c8 FL |
1492 | hdrval = hd_info->seq_num; |
1493 | hdrval |= (hd_info->channel << SDPCM_CHANNEL_SHIFT) & | |
1494 | SDPCM_CHANNEL_MASK; | |
1495 | hdrval |= (hd_info->dat_offset << SDPCM_DOFFSET_SHIFT) & | |
1496 | SDPCM_DOFFSET_MASK; | |
1497 | *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval); | |
1498 | *(((__le32 *)(header + hdr_offset)) + 1) = 0; | |
1499 | trace_brcmf_sdpcm_hdr(SDPCM_TX + !!(bus->txglom), header); | |
6bc52319 FL |
1500 | } |
1501 | ||
82d7f3c1 | 1502 | static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq) |
5b435de0 AS |
1503 | { |
1504 | u16 dlen, totlen; | |
1505 | u8 *dptr, num = 0; | |
9d7d6f95 | 1506 | u16 sublen; |
0b45bf74 | 1507 | struct sk_buff *pfirst, *pnext; |
5b435de0 AS |
1508 | |
1509 | int errcode; | |
9d7d6f95 | 1510 | u8 doff, sfdoff; |
5b435de0 | 1511 | |
6bc52319 | 1512 | struct brcmf_sdio_hdrinfo rd_new; |
5b435de0 AS |
1513 | |
1514 | /* If packets, issue read(s) and send up packet chain */ | |
1515 | /* Return sequence numbers consumed? */ | |
1516 | ||
c3203374 | 1517 | brcmf_dbg(SDIO, "start: glomd %p glom %p\n", |
b83db862 | 1518 | bus->glomd, skb_peek(&bus->glom)); |
5b435de0 AS |
1519 | |
1520 | /* If there's a descriptor, generate the packet chain */ | |
1521 | if (bus->glomd) { | |
0b45bf74 | 1522 | pfirst = pnext = NULL; |
5b435de0 AS |
1523 | dlen = (u16) (bus->glomd->len); |
1524 | dptr = bus->glomd->data; | |
1525 | if (!dlen || (dlen & 1)) { | |
5e8149f5 | 1526 | brcmf_err("bad glomd len(%d), ignore descriptor\n", |
5b435de0 AS |
1527 | dlen); |
1528 | dlen = 0; | |
1529 | } | |
1530 | ||
1531 | for (totlen = num = 0; dlen; num++) { | |
1532 | /* Get (and move past) next length */ | |
1533 | sublen = get_unaligned_le16(dptr); | |
1534 | dlen -= sizeof(u16); | |
1535 | dptr += sizeof(u16); | |
1536 | if ((sublen < SDPCM_HDRLEN) || | |
1537 | ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) { | |
5e8149f5 | 1538 | brcmf_err("descriptor len %d bad: %d\n", |
5b435de0 AS |
1539 | num, sublen); |
1540 | pnext = NULL; | |
1541 | break; | |
1542 | } | |
e217d1c8 | 1543 | if (sublen % bus->sgentry_align) { |
5e8149f5 | 1544 | brcmf_err("sublen %d not multiple of %d\n", |
e217d1c8 | 1545 | sublen, bus->sgentry_align); |
5b435de0 AS |
1546 | } |
1547 | totlen += sublen; | |
1548 | ||
1549 | /* For last frame, adjust read len so total | |
1550 | is a block multiple */ | |
1551 | if (!dlen) { | |
1552 | sublen += | |
1553 | (roundup(totlen, bus->blocksize) - totlen); | |
1554 | totlen = roundup(totlen, bus->blocksize); | |
1555 | } | |
1556 | ||
1557 | /* Allocate/chain packet for next subframe */ | |
e217d1c8 | 1558 | pnext = brcmu_pkt_buf_get_skb(sublen + bus->sgentry_align); |
5b435de0 | 1559 | if (pnext == NULL) { |
5e8149f5 | 1560 | brcmf_err("bcm_pkt_buf_get_skb failed, num %d len %d\n", |
5b435de0 AS |
1561 | num, sublen); |
1562 | break; | |
1563 | } | |
b83db862 | 1564 | skb_queue_tail(&bus->glom, pnext); |
5b435de0 AS |
1565 | |
1566 | /* Adhere to start alignment requirements */ | |
e217d1c8 | 1567 | pkt_align(pnext, sublen, bus->sgentry_align); |
5b435de0 AS |
1568 | } |
1569 | ||
1570 | /* If all allocations succeeded, save packet chain | |
1571 | in bus structure */ | |
1572 | if (pnext) { | |
1573 | brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n", | |
1574 | totlen, num); | |
4754fcee FL |
1575 | if (BRCMF_GLOM_ON() && bus->cur_read.len && |
1576 | totlen != bus->cur_read.len) { | |
5b435de0 | 1577 | brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n", |
4754fcee | 1578 | bus->cur_read.len, totlen, rxseq); |
5b435de0 | 1579 | } |
5b435de0 AS |
1580 | pfirst = pnext = NULL; |
1581 | } else { | |
82d7f3c1 | 1582 | brcmf_sdio_free_glom(bus); |
5b435de0 AS |
1583 | num = 0; |
1584 | } | |
1585 | ||
1586 | /* Done with descriptor packet */ | |
1587 | brcmu_pkt_buf_free_skb(bus->glomd); | |
1588 | bus->glomd = NULL; | |
4754fcee | 1589 | bus->cur_read.len = 0; |
5b435de0 AS |
1590 | } |
1591 | ||
1592 | /* Ok -- either we just generated a packet chain, | |
1593 | or had one from before */ | |
b83db862 | 1594 | if (!skb_queue_empty(&bus->glom)) { |
5b435de0 AS |
1595 | if (BRCMF_GLOM_ON()) { |
1596 | brcmf_dbg(GLOM, "try superframe read, packet chain:\n"); | |
b83db862 | 1597 | skb_queue_walk(&bus->glom, pnext) { |
5b435de0 AS |
1598 | brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n", |
1599 | pnext, (u8 *) (pnext->data), | |
1600 | pnext->len, pnext->len); | |
1601 | } | |
1602 | } | |
1603 | ||
b83db862 | 1604 | pfirst = skb_peek(&bus->glom); |
82d7f3c1 | 1605 | dlen = (u16) brcmf_sdio_glom_len(bus); |
5b435de0 AS |
1606 | |
1607 | /* Do an SDIO read for the superframe. Configurable iovar to | |
1608 | * read directly into the chained packet, or allocate a large | |
1609 | * packet and and copy into the chain. | |
1610 | */ | |
38b0b0dd | 1611 | sdio_claim_host(bus->sdiodev->func[1]); |
a39be27b | 1612 | errcode = brcmf_sdiod_recv_chain(bus->sdiodev, |
a39be27b | 1613 | &bus->glom, dlen); |
38b0b0dd | 1614 | sdio_release_host(bus->sdiodev->func[1]); |
80969836 | 1615 | bus->sdcnt.f2rxdata++; |
5b435de0 AS |
1616 | |
1617 | /* On failure, kill the superframe, allow a couple retries */ | |
1618 | if (errcode < 0) { | |
5e8149f5 | 1619 | brcmf_err("glom read of %d bytes failed: %d\n", |
5b435de0 | 1620 | dlen, errcode); |
5b435de0 | 1621 | |
38b0b0dd | 1622 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 1623 | if (bus->glomerr++ < 3) { |
82d7f3c1 | 1624 | brcmf_sdio_rxfail(bus, true, true); |
5b435de0 AS |
1625 | } else { |
1626 | bus->glomerr = 0; | |
82d7f3c1 | 1627 | brcmf_sdio_rxfail(bus, true, false); |
80969836 | 1628 | bus->sdcnt.rxglomfail++; |
82d7f3c1 | 1629 | brcmf_sdio_free_glom(bus); |
5b435de0 | 1630 | } |
38b0b0dd | 1631 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1632 | return 0; |
1633 | } | |
1e023829 JP |
1634 | |
1635 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), | |
1636 | pfirst->data, min_t(int, pfirst->len, 48), | |
1637 | "SUPERFRAME:\n"); | |
5b435de0 | 1638 | |
9d7d6f95 FL |
1639 | rd_new.seq_num = rxseq; |
1640 | rd_new.len = dlen; | |
38b0b0dd | 1641 | sdio_claim_host(bus->sdiodev->func[1]); |
6bc52319 FL |
1642 | errcode = brcmf_sdio_hdparse(bus, pfirst->data, &rd_new, |
1643 | BRCMF_SDIO_FT_SUPER); | |
38b0b0dd | 1644 | sdio_release_host(bus->sdiodev->func[1]); |
9d7d6f95 | 1645 | bus->cur_read.len = rd_new.len_nxtfrm << 4; |
5b435de0 AS |
1646 | |
1647 | /* Remove superframe header, remember offset */ | |
9d7d6f95 FL |
1648 | skb_pull(pfirst, rd_new.dat_offset); |
1649 | sfdoff = rd_new.dat_offset; | |
0b45bf74 | 1650 | num = 0; |
5b435de0 AS |
1651 | |
1652 | /* Validate all the subframe headers */ | |
0b45bf74 AS |
1653 | skb_queue_walk(&bus->glom, pnext) { |
1654 | /* leave when invalid subframe is found */ | |
1655 | if (errcode) | |
1656 | break; | |
1657 | ||
9d7d6f95 FL |
1658 | rd_new.len = pnext->len; |
1659 | rd_new.seq_num = rxseq++; | |
38b0b0dd | 1660 | sdio_claim_host(bus->sdiodev->func[1]); |
6bc52319 FL |
1661 | errcode = brcmf_sdio_hdparse(bus, pnext->data, &rd_new, |
1662 | BRCMF_SDIO_FT_SUB); | |
38b0b0dd | 1663 | sdio_release_host(bus->sdiodev->func[1]); |
1e023829 | 1664 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
9d7d6f95 | 1665 | pnext->data, 32, "subframe:\n"); |
5b435de0 | 1666 | |
0b45bf74 | 1667 | num++; |
5b435de0 AS |
1668 | } |
1669 | ||
1670 | if (errcode) { | |
1671 | /* Terminate frame on error, request | |
1672 | a couple retries */ | |
38b0b0dd | 1673 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1674 | if (bus->glomerr++ < 3) { |
1675 | /* Restore superframe header space */ | |
1676 | skb_push(pfirst, sfdoff); | |
82d7f3c1 | 1677 | brcmf_sdio_rxfail(bus, true, true); |
5b435de0 AS |
1678 | } else { |
1679 | bus->glomerr = 0; | |
82d7f3c1 | 1680 | brcmf_sdio_rxfail(bus, true, false); |
80969836 | 1681 | bus->sdcnt.rxglomfail++; |
82d7f3c1 | 1682 | brcmf_sdio_free_glom(bus); |
5b435de0 | 1683 | } |
38b0b0dd | 1684 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee | 1685 | bus->cur_read.len = 0; |
5b435de0 AS |
1686 | return 0; |
1687 | } | |
1688 | ||
1689 | /* Basic SD framing looks ok - process each packet (header) */ | |
5b435de0 | 1690 | |
0b45bf74 | 1691 | skb_queue_walk_safe(&bus->glom, pfirst, pnext) { |
5b435de0 AS |
1692 | dptr = (u8 *) (pfirst->data); |
1693 | sublen = get_unaligned_le16(dptr); | |
6bc52319 | 1694 | doff = brcmf_sdio_getdatoffset(&dptr[SDPCM_HWHDR_LEN]); |
5b435de0 | 1695 | |
1e023829 | 1696 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), |
9d7d6f95 FL |
1697 | dptr, pfirst->len, |
1698 | "Rx Subframe Data:\n"); | |
5b435de0 AS |
1699 | |
1700 | __skb_trim(pfirst, sublen); | |
1701 | skb_pull(pfirst, doff); | |
1702 | ||
1703 | if (pfirst->len == 0) { | |
0b45bf74 | 1704 | skb_unlink(pfirst, &bus->glom); |
5b435de0 | 1705 | brcmu_pkt_buf_free_skb(pfirst); |
5b435de0 | 1706 | continue; |
5b435de0 AS |
1707 | } |
1708 | ||
1e023829 JP |
1709 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
1710 | pfirst->data, | |
1711 | min_t(int, pfirst->len, 32), | |
1712 | "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n", | |
1713 | bus->glom.qlen, pfirst, pfirst->data, | |
1714 | pfirst->len, pfirst->next, | |
1715 | pfirst->prev); | |
05f3820b AS |
1716 | skb_unlink(pfirst, &bus->glom); |
1717 | brcmf_rx_frame(bus->sdiodev->dev, pfirst); | |
1718 | bus->sdcnt.rxglompkts++; | |
5b435de0 | 1719 | } |
5b435de0 | 1720 | |
80969836 | 1721 | bus->sdcnt.rxglomframes++; |
5b435de0 AS |
1722 | } |
1723 | return num; | |
1724 | } | |
1725 | ||
82d7f3c1 AS |
1726 | static int brcmf_sdio_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition, |
1727 | bool *pending) | |
5b435de0 AS |
1728 | { |
1729 | DECLARE_WAITQUEUE(wait, current); | |
1730 | int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT); | |
1731 | ||
1732 | /* Wait until control frame is available */ | |
1733 | add_wait_queue(&bus->dcmd_resp_wait, &wait); | |
1734 | set_current_state(TASK_INTERRUPTIBLE); | |
1735 | ||
1736 | while (!(*condition) && (!signal_pending(current) && timeout)) | |
1737 | timeout = schedule_timeout(timeout); | |
1738 | ||
1739 | if (signal_pending(current)) | |
1740 | *pending = true; | |
1741 | ||
1742 | set_current_state(TASK_RUNNING); | |
1743 | remove_wait_queue(&bus->dcmd_resp_wait, &wait); | |
1744 | ||
1745 | return timeout; | |
1746 | } | |
1747 | ||
82d7f3c1 | 1748 | static int brcmf_sdio_dcmd_resp_wake(struct brcmf_sdio *bus) |
5b435de0 AS |
1749 | { |
1750 | if (waitqueue_active(&bus->dcmd_resp_wait)) | |
1751 | wake_up_interruptible(&bus->dcmd_resp_wait); | |
1752 | ||
1753 | return 0; | |
1754 | } | |
1755 | static void | |
82d7f3c1 | 1756 | brcmf_sdio_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff) |
5b435de0 AS |
1757 | { |
1758 | uint rdlen, pad; | |
dd43a01c | 1759 | u8 *buf = NULL, *rbuf; |
5b435de0 AS |
1760 | int sdret; |
1761 | ||
1762 | brcmf_dbg(TRACE, "Enter\n"); | |
1763 | ||
dd43a01c FL |
1764 | if (bus->rxblen) |
1765 | buf = vzalloc(bus->rxblen); | |
14f8dc49 | 1766 | if (!buf) |
dd43a01c | 1767 | goto done; |
14f8dc49 | 1768 | |
dd43a01c | 1769 | rbuf = bus->rxbuf; |
9b2d2f2a | 1770 | pad = ((unsigned long)rbuf % bus->head_align); |
5b435de0 | 1771 | if (pad) |
9b2d2f2a | 1772 | rbuf += (bus->head_align - pad); |
5b435de0 AS |
1773 | |
1774 | /* Copy the already-read portion over */ | |
dd43a01c | 1775 | memcpy(buf, hdr, BRCMF_FIRSTREAD); |
5b435de0 AS |
1776 | if (len <= BRCMF_FIRSTREAD) |
1777 | goto gotpkt; | |
1778 | ||
1779 | /* Raise rdlen to next SDIO block to avoid tail command */ | |
1780 | rdlen = len - BRCMF_FIRSTREAD; | |
1781 | if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { | |
1782 | pad = bus->blocksize - (rdlen % bus->blocksize); | |
1783 | if ((pad <= bus->roundup) && (pad < bus->blocksize) && | |
b01a6b3c | 1784 | ((len + pad) < bus->sdiodev->bus_if->maxctl)) |
5b435de0 | 1785 | rdlen += pad; |
9b2d2f2a AS |
1786 | } else if (rdlen % bus->head_align) { |
1787 | rdlen += bus->head_align - (rdlen % bus->head_align); | |
5b435de0 AS |
1788 | } |
1789 | ||
5b435de0 | 1790 | /* Drop if the read is too big or it exceeds our maximum */ |
b01a6b3c | 1791 | if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) { |
5e8149f5 | 1792 | brcmf_err("%d-byte control read exceeds %d-byte buffer\n", |
b01a6b3c | 1793 | rdlen, bus->sdiodev->bus_if->maxctl); |
82d7f3c1 | 1794 | brcmf_sdio_rxfail(bus, false, false); |
5b435de0 AS |
1795 | goto done; |
1796 | } | |
1797 | ||
b01a6b3c | 1798 | if ((len - doff) > bus->sdiodev->bus_if->maxctl) { |
5e8149f5 | 1799 | brcmf_err("%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n", |
b01a6b3c | 1800 | len, len - doff, bus->sdiodev->bus_if->maxctl); |
80969836 | 1801 | bus->sdcnt.rx_toolong++; |
82d7f3c1 | 1802 | brcmf_sdio_rxfail(bus, false, false); |
5b435de0 AS |
1803 | goto done; |
1804 | } | |
1805 | ||
dd43a01c | 1806 | /* Read remain of frame body */ |
a7cdd821 | 1807 | sdret = brcmf_sdiod_recv_buf(bus->sdiodev, rbuf, rdlen); |
80969836 | 1808 | bus->sdcnt.f2rxdata++; |
5b435de0 AS |
1809 | |
1810 | /* Control frame failures need retransmission */ | |
1811 | if (sdret < 0) { | |
5e8149f5 | 1812 | brcmf_err("read %d control bytes failed: %d\n", |
5b435de0 | 1813 | rdlen, sdret); |
80969836 | 1814 | bus->sdcnt.rxc_errors++; |
82d7f3c1 | 1815 | brcmf_sdio_rxfail(bus, true, true); |
5b435de0 | 1816 | goto done; |
dd43a01c FL |
1817 | } else |
1818 | memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen); | |
5b435de0 AS |
1819 | |
1820 | gotpkt: | |
1821 | ||
1e023829 | 1822 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), |
dd43a01c | 1823 | buf, len, "RxCtrl:\n"); |
5b435de0 AS |
1824 | |
1825 | /* Point to valid data and indicate its length */ | |
dd43a01c FL |
1826 | spin_lock_bh(&bus->rxctl_lock); |
1827 | if (bus->rxctl) { | |
5e8149f5 | 1828 | brcmf_err("last control frame is being processed.\n"); |
dd43a01c FL |
1829 | spin_unlock_bh(&bus->rxctl_lock); |
1830 | vfree(buf); | |
1831 | goto done; | |
1832 | } | |
1833 | bus->rxctl = buf + doff; | |
1834 | bus->rxctl_orig = buf; | |
5b435de0 | 1835 | bus->rxlen = len - doff; |
dd43a01c | 1836 | spin_unlock_bh(&bus->rxctl_lock); |
5b435de0 AS |
1837 | |
1838 | done: | |
1839 | /* Awake any waiters */ | |
82d7f3c1 | 1840 | brcmf_sdio_dcmd_resp_wake(bus); |
5b435de0 AS |
1841 | } |
1842 | ||
1843 | /* Pad read to blocksize for efficiency */ | |
82d7f3c1 | 1844 | static void brcmf_sdio_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen) |
5b435de0 AS |
1845 | { |
1846 | if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) { | |
1847 | *pad = bus->blocksize - (*rdlen % bus->blocksize); | |
1848 | if (*pad <= bus->roundup && *pad < bus->blocksize && | |
1849 | *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ) | |
1850 | *rdlen += *pad; | |
9b2d2f2a AS |
1851 | } else if (*rdlen % bus->head_align) { |
1852 | *rdlen += bus->head_align - (*rdlen % bus->head_align); | |
5b435de0 AS |
1853 | } |
1854 | } | |
1855 | ||
4754fcee | 1856 | static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes) |
5b435de0 | 1857 | { |
5b435de0 AS |
1858 | struct sk_buff *pkt; /* Packet for event or data frames */ |
1859 | u16 pad; /* Number of pad bytes to read */ | |
5b435de0 | 1860 | uint rxleft = 0; /* Remaining number of frames allowed */ |
349e7104 | 1861 | int ret; /* Return code from calls */ |
5b435de0 | 1862 | uint rxcount = 0; /* Total frames read */ |
6bc52319 | 1863 | struct brcmf_sdio_hdrinfo *rd = &bus->cur_read, rd_new; |
4754fcee | 1864 | u8 head_read = 0; |
5b435de0 AS |
1865 | |
1866 | brcmf_dbg(TRACE, "Enter\n"); | |
1867 | ||
1868 | /* Not finished unless we encounter no more frames indication */ | |
4754fcee | 1869 | bus->rxpending = true; |
5b435de0 | 1870 | |
4754fcee | 1871 | for (rd->seq_num = bus->rx_seq, rxleft = maxframes; |
bb350711 | 1872 | !bus->rxskip && rxleft && brcmf_bus_ready(bus->sdiodev->bus_if); |
4754fcee | 1873 | rd->seq_num++, rxleft--) { |
5b435de0 AS |
1874 | |
1875 | /* Handle glomming separately */ | |
b83db862 | 1876 | if (bus->glomd || !skb_queue_empty(&bus->glom)) { |
5b435de0 AS |
1877 | u8 cnt; |
1878 | brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n", | |
b83db862 | 1879 | bus->glomd, skb_peek(&bus->glom)); |
82d7f3c1 | 1880 | cnt = brcmf_sdio_rxglom(bus, rd->seq_num); |
5b435de0 | 1881 | brcmf_dbg(GLOM, "rxglom returned %d\n", cnt); |
4754fcee | 1882 | rd->seq_num += cnt - 1; |
5b435de0 AS |
1883 | rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1; |
1884 | continue; | |
1885 | } | |
1886 | ||
4754fcee FL |
1887 | rd->len_left = rd->len; |
1888 | /* read header first for unknow frame length */ | |
38b0b0dd | 1889 | sdio_claim_host(bus->sdiodev->func[1]); |
4754fcee | 1890 | if (!rd->len) { |
a39be27b | 1891 | ret = brcmf_sdiod_recv_buf(bus->sdiodev, |
a39be27b | 1892 | bus->rxhdr, BRCMF_FIRSTREAD); |
4754fcee | 1893 | bus->sdcnt.f2rxhdrs++; |
349e7104 | 1894 | if (ret < 0) { |
5e8149f5 | 1895 | brcmf_err("RXHEADER FAILED: %d\n", |
349e7104 | 1896 | ret); |
4754fcee | 1897 | bus->sdcnt.rx_hdrfail++; |
82d7f3c1 | 1898 | brcmf_sdio_rxfail(bus, true, true); |
38b0b0dd | 1899 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1900 | continue; |
5b435de0 | 1901 | } |
5b435de0 | 1902 | |
4754fcee | 1903 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(), |
1e023829 JP |
1904 | bus->rxhdr, SDPCM_HDRLEN, |
1905 | "RxHdr:\n"); | |
5b435de0 | 1906 | |
6bc52319 FL |
1907 | if (brcmf_sdio_hdparse(bus, bus->rxhdr, rd, |
1908 | BRCMF_SDIO_FT_NORMAL)) { | |
38b0b0dd | 1909 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1910 | if (!bus->rxpending) |
1911 | break; | |
1912 | else | |
1913 | continue; | |
5b435de0 AS |
1914 | } |
1915 | ||
4754fcee | 1916 | if (rd->channel == SDPCM_CONTROL_CHANNEL) { |
82d7f3c1 AS |
1917 | brcmf_sdio_read_control(bus, bus->rxhdr, |
1918 | rd->len, | |
1919 | rd->dat_offset); | |
4754fcee FL |
1920 | /* prepare the descriptor for the next read */ |
1921 | rd->len = rd->len_nxtfrm << 4; | |
1922 | rd->len_nxtfrm = 0; | |
1923 | /* treat all packet as event if we don't know */ | |
1924 | rd->channel = SDPCM_EVENT_CHANNEL; | |
38b0b0dd | 1925 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1926 | continue; |
1927 | } | |
4754fcee FL |
1928 | rd->len_left = rd->len > BRCMF_FIRSTREAD ? |
1929 | rd->len - BRCMF_FIRSTREAD : 0; | |
1930 | head_read = BRCMF_FIRSTREAD; | |
5b435de0 AS |
1931 | } |
1932 | ||
82d7f3c1 | 1933 | brcmf_sdio_pad(bus, &pad, &rd->len_left); |
5b435de0 | 1934 | |
4754fcee | 1935 | pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read + |
9b2d2f2a | 1936 | bus->head_align); |
5b435de0 AS |
1937 | if (!pkt) { |
1938 | /* Give up on data, request rtx of events */ | |
5e8149f5 | 1939 | brcmf_err("brcmu_pkt_buf_get_skb failed\n"); |
82d7f3c1 | 1940 | brcmf_sdio_rxfail(bus, false, |
4754fcee | 1941 | RETRYCHAN(rd->channel)); |
38b0b0dd | 1942 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1943 | continue; |
1944 | } | |
4754fcee | 1945 | skb_pull(pkt, head_read); |
9b2d2f2a | 1946 | pkt_align(pkt, rd->len_left, bus->head_align); |
5b435de0 | 1947 | |
a7cdd821 | 1948 | ret = brcmf_sdiod_recv_pkt(bus->sdiodev, pkt); |
80969836 | 1949 | bus->sdcnt.f2rxdata++; |
38b0b0dd | 1950 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 1951 | |
349e7104 | 1952 | if (ret < 0) { |
5e8149f5 | 1953 | brcmf_err("read %d bytes from channel %d failed: %d\n", |
349e7104 | 1954 | rd->len, rd->channel, ret); |
5b435de0 | 1955 | brcmu_pkt_buf_free_skb(pkt); |
38b0b0dd | 1956 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 1957 | brcmf_sdio_rxfail(bus, true, |
4754fcee | 1958 | RETRYCHAN(rd->channel)); |
38b0b0dd | 1959 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
1960 | continue; |
1961 | } | |
1962 | ||
4754fcee FL |
1963 | if (head_read) { |
1964 | skb_push(pkt, head_read); | |
1965 | memcpy(pkt->data, bus->rxhdr, head_read); | |
1966 | head_read = 0; | |
1967 | } else { | |
1968 | memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN); | |
1969 | rd_new.seq_num = rd->seq_num; | |
38b0b0dd | 1970 | sdio_claim_host(bus->sdiodev->func[1]); |
6bc52319 FL |
1971 | if (brcmf_sdio_hdparse(bus, bus->rxhdr, &rd_new, |
1972 | BRCMF_SDIO_FT_NORMAL)) { | |
4754fcee FL |
1973 | rd->len = 0; |
1974 | brcmu_pkt_buf_free_skb(pkt); | |
1975 | } | |
1976 | bus->sdcnt.rx_readahead_cnt++; | |
1977 | if (rd->len != roundup(rd_new.len, 16)) { | |
5e8149f5 | 1978 | brcmf_err("frame length mismatch:read %d, should be %d\n", |
4754fcee FL |
1979 | rd->len, |
1980 | roundup(rd_new.len, 16) >> 4); | |
1981 | rd->len = 0; | |
82d7f3c1 | 1982 | brcmf_sdio_rxfail(bus, true, true); |
38b0b0dd | 1983 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1984 | brcmu_pkt_buf_free_skb(pkt); |
1985 | continue; | |
1986 | } | |
38b0b0dd | 1987 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
1988 | rd->len_nxtfrm = rd_new.len_nxtfrm; |
1989 | rd->channel = rd_new.channel; | |
1990 | rd->dat_offset = rd_new.dat_offset; | |
1991 | ||
1992 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && | |
1993 | BRCMF_DATA_ON()) && | |
1994 | BRCMF_HDRS_ON(), | |
1995 | bus->rxhdr, SDPCM_HDRLEN, | |
1996 | "RxHdr:\n"); | |
1997 | ||
1998 | if (rd_new.channel == SDPCM_CONTROL_CHANNEL) { | |
5e8149f5 | 1999 | brcmf_err("readahead on control packet %d?\n", |
4754fcee FL |
2000 | rd_new.seq_num); |
2001 | /* Force retry w/normal header read */ | |
2002 | rd->len = 0; | |
38b0b0dd | 2003 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 2004 | brcmf_sdio_rxfail(bus, false, true); |
38b0b0dd | 2005 | sdio_release_host(bus->sdiodev->func[1]); |
4754fcee FL |
2006 | brcmu_pkt_buf_free_skb(pkt); |
2007 | continue; | |
2008 | } | |
2009 | } | |
5b435de0 | 2010 | |
1e023829 | 2011 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), |
4754fcee | 2012 | pkt->data, rd->len, "Rx Data:\n"); |
5b435de0 | 2013 | |
5b435de0 | 2014 | /* Save superframe descriptor and allocate packet frame */ |
4754fcee | 2015 | if (rd->channel == SDPCM_GLOM_CHANNEL) { |
6bc52319 | 2016 | if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_HWHDR_LEN])) { |
5b435de0 | 2017 | brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n", |
4754fcee | 2018 | rd->len); |
1e023829 | 2019 | brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), |
4754fcee | 2020 | pkt->data, rd->len, |
1e023829 | 2021 | "Glom Data:\n"); |
4754fcee | 2022 | __skb_trim(pkt, rd->len); |
5b435de0 AS |
2023 | skb_pull(pkt, SDPCM_HDRLEN); |
2024 | bus->glomd = pkt; | |
2025 | } else { | |
5e8149f5 | 2026 | brcmf_err("%s: glom superframe w/o " |
5b435de0 | 2027 | "descriptor!\n", __func__); |
38b0b0dd | 2028 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 2029 | brcmf_sdio_rxfail(bus, false, false); |
38b0b0dd | 2030 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 | 2031 | } |
4754fcee FL |
2032 | /* prepare the descriptor for the next read */ |
2033 | rd->len = rd->len_nxtfrm << 4; | |
2034 | rd->len_nxtfrm = 0; | |
2035 | /* treat all packet as event if we don't know */ | |
2036 | rd->channel = SDPCM_EVENT_CHANNEL; | |
5b435de0 AS |
2037 | continue; |
2038 | } | |
2039 | ||
2040 | /* Fill in packet len and prio, deliver upward */ | |
4754fcee FL |
2041 | __skb_trim(pkt, rd->len); |
2042 | skb_pull(pkt, rd->dat_offset); | |
2043 | ||
2044 | /* prepare the descriptor for the next read */ | |
2045 | rd->len = rd->len_nxtfrm << 4; | |
2046 | rd->len_nxtfrm = 0; | |
2047 | /* treat all packet as event if we don't know */ | |
2048 | rd->channel = SDPCM_EVENT_CHANNEL; | |
5b435de0 AS |
2049 | |
2050 | if (pkt->len == 0) { | |
2051 | brcmu_pkt_buf_free_skb(pkt); | |
2052 | continue; | |
5b435de0 AS |
2053 | } |
2054 | ||
05f3820b | 2055 | brcmf_rx_frame(bus->sdiodev->dev, pkt); |
5b435de0 | 2056 | } |
4754fcee | 2057 | |
5b435de0 | 2058 | rxcount = maxframes - rxleft; |
5b435de0 AS |
2059 | /* Message if we hit the limit */ |
2060 | if (!rxleft) | |
4754fcee | 2061 | brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes); |
5b435de0 | 2062 | else |
5b435de0 AS |
2063 | brcmf_dbg(DATA, "processed %d frames\n", rxcount); |
2064 | /* Back off rxseq if awaiting rtx, update rx_seq */ | |
2065 | if (bus->rxskip) | |
4754fcee FL |
2066 | rd->seq_num--; |
2067 | bus->rx_seq = rd->seq_num; | |
5b435de0 AS |
2068 | |
2069 | return rxcount; | |
2070 | } | |
2071 | ||
5b435de0 | 2072 | static void |
82d7f3c1 | 2073 | brcmf_sdio_wait_event_wakeup(struct brcmf_sdio *bus) |
5b435de0 AS |
2074 | { |
2075 | if (waitqueue_active(&bus->ctrl_wait)) | |
2076 | wake_up_interruptible(&bus->ctrl_wait); | |
2077 | return; | |
2078 | } | |
2079 | ||
8da9d2c8 FL |
2080 | static int brcmf_sdio_txpkt_hdalign(struct brcmf_sdio *bus, struct sk_buff *pkt) |
2081 | { | |
e217d1c8 | 2082 | u16 head_pad; |
8da9d2c8 FL |
2083 | u8 *dat_buf; |
2084 | ||
8da9d2c8 FL |
2085 | dat_buf = (u8 *)(pkt->data); |
2086 | ||
2087 | /* Check head padding */ | |
e217d1c8 | 2088 | head_pad = ((unsigned long)dat_buf % bus->head_align); |
8da9d2c8 FL |
2089 | if (head_pad) { |
2090 | if (skb_headroom(pkt) < head_pad) { | |
2091 | bus->sdiodev->bus_if->tx_realloc++; | |
2092 | head_pad = 0; | |
2093 | if (skb_cow(pkt, head_pad)) | |
2094 | return -ENOMEM; | |
2095 | } | |
2096 | skb_push(pkt, head_pad); | |
2097 | dat_buf = (u8 *)(pkt->data); | |
2098 | memset(dat_buf, 0, head_pad + bus->tx_hdrlen); | |
2099 | } | |
2100 | return head_pad; | |
2101 | } | |
2102 | ||
5491c11c FL |
2103 | /** |
2104 | * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for | |
2105 | * bus layer usage. | |
2106 | */ | |
b05e9254 | 2107 | /* flag marking a dummy skb added for DMA alignment requirement */ |
5491c11c | 2108 | #define ALIGN_SKB_FLAG 0x8000 |
b05e9254 | 2109 | /* bit mask of data length chopped from the previous packet */ |
5491c11c FL |
2110 | #define ALIGN_SKB_CHOP_LEN_MASK 0x7fff |
2111 | ||
8da9d2c8 | 2112 | static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus, |
a64304f0 | 2113 | struct sk_buff_head *pktq, |
8da9d2c8 | 2114 | struct sk_buff *pkt, u16 total_len) |
a64304f0 | 2115 | { |
8da9d2c8 | 2116 | struct brcmf_sdio_dev *sdiodev; |
a64304f0 | 2117 | struct sk_buff *pkt_pad; |
e217d1c8 | 2118 | u16 tail_pad, tail_chop, chain_pad; |
a64304f0 | 2119 | unsigned int blksize; |
8da9d2c8 FL |
2120 | bool lastfrm; |
2121 | int ntail, ret; | |
a64304f0 | 2122 | |
8da9d2c8 | 2123 | sdiodev = bus->sdiodev; |
a64304f0 | 2124 | blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize; |
a64304f0 | 2125 | /* sg entry alignment should be a divisor of block size */ |
e217d1c8 | 2126 | WARN_ON(blksize % bus->sgentry_align); |
a64304f0 AS |
2127 | |
2128 | /* Check tail padding */ | |
8da9d2c8 FL |
2129 | lastfrm = skb_queue_is_last(pktq, pkt); |
2130 | tail_pad = 0; | |
e217d1c8 | 2131 | tail_chop = pkt->len % bus->sgentry_align; |
8da9d2c8 | 2132 | if (tail_chop) |
e217d1c8 | 2133 | tail_pad = bus->sgentry_align - tail_chop; |
8da9d2c8 FL |
2134 | chain_pad = (total_len + tail_pad) % blksize; |
2135 | if (lastfrm && chain_pad) | |
2136 | tail_pad += blksize - chain_pad; | |
a64304f0 | 2137 | if (skb_tailroom(pkt) < tail_pad && pkt->len > blksize) { |
1eb43018 AS |
2138 | pkt_pad = brcmu_pkt_buf_get_skb(tail_pad + tail_chop + |
2139 | bus->head_align); | |
a64304f0 AS |
2140 | if (pkt_pad == NULL) |
2141 | return -ENOMEM; | |
8da9d2c8 | 2142 | ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad); |
2dc3a8e0 DJ |
2143 | if (unlikely(ret < 0)) { |
2144 | kfree_skb(pkt_pad); | |
8da9d2c8 | 2145 | return ret; |
2dc3a8e0 | 2146 | } |
a64304f0 AS |
2147 | memcpy(pkt_pad->data, |
2148 | pkt->data + pkt->len - tail_chop, | |
2149 | tail_chop); | |
5aa9f0ea | 2150 | *(u16 *)(pkt_pad->cb) = ALIGN_SKB_FLAG + tail_chop; |
a64304f0 | 2151 | skb_trim(pkt, pkt->len - tail_chop); |
1eb43018 | 2152 | skb_trim(pkt_pad, tail_pad + tail_chop); |
a64304f0 AS |
2153 | __skb_queue_after(pktq, pkt, pkt_pad); |
2154 | } else { | |
2155 | ntail = pkt->data_len + tail_pad - | |
2156 | (pkt->end - pkt->tail); | |
2157 | if (skb_cloned(pkt) || ntail > 0) | |
2158 | if (pskb_expand_head(pkt, 0, ntail, GFP_ATOMIC)) | |
2159 | return -ENOMEM; | |
2160 | if (skb_linearize(pkt)) | |
2161 | return -ENOMEM; | |
a64304f0 AS |
2162 | __skb_put(pkt, tail_pad); |
2163 | } | |
2164 | ||
8da9d2c8 | 2165 | return tail_pad; |
a64304f0 AS |
2166 | } |
2167 | ||
b05e9254 FL |
2168 | /** |
2169 | * brcmf_sdio_txpkt_prep - packet preparation for transmit | |
2170 | * @bus: brcmf_sdio structure pointer | |
2171 | * @pktq: packet list pointer | |
2172 | * @chan: virtual channel to transmit the packet | |
2173 | * | |
2174 | * Processes to be applied to the packet | |
2175 | * - Align data buffer pointer | |
2176 | * - Align data buffer length | |
2177 | * - Prepare header | |
2178 | * Return: negative value if there is error | |
2179 | */ | |
2180 | static int | |
2181 | brcmf_sdio_txpkt_prep(struct brcmf_sdio *bus, struct sk_buff_head *pktq, | |
2182 | uint chan) | |
5b435de0 | 2183 | { |
8da9d2c8 | 2184 | u16 head_pad, total_len; |
a64304f0 | 2185 | struct sk_buff *pkt_next; |
8da9d2c8 FL |
2186 | u8 txseq; |
2187 | int ret; | |
6bc52319 | 2188 | struct brcmf_sdio_hdrinfo hd_info = {0}; |
b05e9254 | 2189 | |
8da9d2c8 FL |
2190 | txseq = bus->tx_seq; |
2191 | total_len = 0; | |
2192 | skb_queue_walk(pktq, pkt_next) { | |
2193 | /* alignment packet inserted in previous | |
2194 | * loop cycle can be skipped as it is | |
2195 | * already properly aligned and does not | |
2196 | * need an sdpcm header. | |
2197 | */ | |
5aa9f0ea | 2198 | if (*(u16 *)(pkt_next->cb) & ALIGN_SKB_FLAG) |
8da9d2c8 | 2199 | continue; |
5b435de0 | 2200 | |
8da9d2c8 FL |
2201 | /* align packet data pointer */ |
2202 | ret = brcmf_sdio_txpkt_hdalign(bus, pkt_next); | |
2203 | if (ret < 0) | |
2204 | return ret; | |
2205 | head_pad = (u16)ret; | |
2206 | if (head_pad) | |
1eb43018 | 2207 | memset(pkt_next->data + bus->tx_hdrlen, 0, head_pad); |
5b435de0 | 2208 | |
8da9d2c8 | 2209 | total_len += pkt_next->len; |
5b435de0 | 2210 | |
a64304f0 | 2211 | hd_info.len = pkt_next->len; |
8da9d2c8 FL |
2212 | hd_info.lastfrm = skb_queue_is_last(pktq, pkt_next); |
2213 | if (bus->txglom && pktq->qlen > 1) { | |
2214 | ret = brcmf_sdio_txpkt_prep_sg(bus, pktq, | |
2215 | pkt_next, total_len); | |
2216 | if (ret < 0) | |
2217 | return ret; | |
2218 | hd_info.tail_pad = (u16)ret; | |
2219 | total_len += (u16)ret; | |
2220 | } | |
5b435de0 | 2221 | |
8da9d2c8 FL |
2222 | hd_info.channel = chan; |
2223 | hd_info.dat_offset = head_pad + bus->tx_hdrlen; | |
2224 | hd_info.seq_num = txseq++; | |
2225 | ||
2226 | /* Now fill the header */ | |
2227 | brcmf_sdio_hdpack(bus, pkt_next->data, &hd_info); | |
2228 | ||
2229 | if (BRCMF_BYTES_ON() && | |
2230 | ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) || | |
2231 | (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL))) | |
47ab4cd8 | 2232 | brcmf_dbg_hex_dump(true, pkt_next->data, hd_info.len, |
8da9d2c8 FL |
2233 | "Tx Frame:\n"); |
2234 | else if (BRCMF_HDRS_ON()) | |
47ab4cd8 | 2235 | brcmf_dbg_hex_dump(true, pkt_next->data, |
8da9d2c8 FL |
2236 | head_pad + bus->tx_hdrlen, |
2237 | "Tx Header:\n"); | |
2238 | } | |
2239 | /* Hardware length tag of the first packet should be total | |
2240 | * length of the chain (including padding) | |
2241 | */ | |
2242 | if (bus->txglom) | |
2243 | brcmf_sdio_update_hwhdr(pktq->next->data, total_len); | |
b05e9254 FL |
2244 | return 0; |
2245 | } | |
5b435de0 | 2246 | |
b05e9254 FL |
2247 | /** |
2248 | * brcmf_sdio_txpkt_postp - packet post processing for transmit | |
2249 | * @bus: brcmf_sdio structure pointer | |
2250 | * @pktq: packet list pointer | |
2251 | * | |
2252 | * Processes to be applied to the packet | |
2253 | * - Remove head padding | |
2254 | * - Remove tail padding | |
2255 | */ | |
2256 | static void | |
2257 | brcmf_sdio_txpkt_postp(struct brcmf_sdio *bus, struct sk_buff_head *pktq) | |
2258 | { | |
2259 | u8 *hdr; | |
2260 | u32 dat_offset; | |
8da9d2c8 | 2261 | u16 tail_pad; |
5aa9f0ea | 2262 | u16 dummy_flags, chop_len; |
b05e9254 FL |
2263 | struct sk_buff *pkt_next, *tmp, *pkt_prev; |
2264 | ||
2265 | skb_queue_walk_safe(pktq, pkt_next, tmp) { | |
5aa9f0ea | 2266 | dummy_flags = *(u16 *)(pkt_next->cb); |
5491c11c FL |
2267 | if (dummy_flags & ALIGN_SKB_FLAG) { |
2268 | chop_len = dummy_flags & ALIGN_SKB_CHOP_LEN_MASK; | |
b05e9254 FL |
2269 | if (chop_len) { |
2270 | pkt_prev = pkt_next->prev; | |
b05e9254 FL |
2271 | skb_put(pkt_prev, chop_len); |
2272 | } | |
2273 | __skb_unlink(pkt_next, pktq); | |
2274 | brcmu_pkt_buf_free_skb(pkt_next); | |
2275 | } else { | |
8da9d2c8 | 2276 | hdr = pkt_next->data + bus->tx_hdrlen - SDPCM_SWHDR_LEN; |
b05e9254 FL |
2277 | dat_offset = le32_to_cpu(*(__le32 *)hdr); |
2278 | dat_offset = (dat_offset & SDPCM_DOFFSET_MASK) >> | |
2279 | SDPCM_DOFFSET_SHIFT; | |
2280 | skb_pull(pkt_next, dat_offset); | |
8da9d2c8 FL |
2281 | if (bus->txglom) { |
2282 | tail_pad = le16_to_cpu(*(__le16 *)(hdr - 2)); | |
2283 | skb_trim(pkt_next, pkt_next->len - tail_pad); | |
2284 | } | |
b05e9254 | 2285 | } |
5b435de0 | 2286 | } |
b05e9254 | 2287 | } |
5b435de0 | 2288 | |
b05e9254 FL |
2289 | /* Writes a HW/SW header into the packet and sends it. */ |
2290 | /* Assumes: (a) header space already there, (b) caller holds lock */ | |
82d7f3c1 AS |
2291 | static int brcmf_sdio_txpkt(struct brcmf_sdio *bus, struct sk_buff_head *pktq, |
2292 | uint chan) | |
b05e9254 FL |
2293 | { |
2294 | int ret; | |
8da9d2c8 | 2295 | struct sk_buff *pkt_next, *tmp; |
b05e9254 FL |
2296 | |
2297 | brcmf_dbg(TRACE, "Enter\n"); | |
2298 | ||
8da9d2c8 | 2299 | ret = brcmf_sdio_txpkt_prep(bus, pktq, chan); |
b05e9254 FL |
2300 | if (ret) |
2301 | goto done; | |
5b435de0 | 2302 | |
38b0b0dd | 2303 | sdio_claim_host(bus->sdiodev->func[1]); |
a7cdd821 | 2304 | ret = brcmf_sdiod_send_pkt(bus->sdiodev, pktq); |
80969836 | 2305 | bus->sdcnt.f2txdata++; |
5b435de0 | 2306 | |
81c7883c HM |
2307 | if (ret < 0) |
2308 | brcmf_sdio_txfail(bus); | |
5b435de0 | 2309 | |
38b0b0dd | 2310 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2311 | |
2312 | done: | |
8da9d2c8 FL |
2313 | brcmf_sdio_txpkt_postp(bus, pktq); |
2314 | if (ret == 0) | |
2315 | bus->tx_seq = (bus->tx_seq + pktq->qlen) % SDPCM_SEQ_WRAP; | |
2316 | skb_queue_walk_safe(pktq, pkt_next, tmp) { | |
2317 | __skb_unlink(pkt_next, pktq); | |
2318 | brcmf_txcomplete(bus->sdiodev->dev, pkt_next, ret == 0); | |
2319 | } | |
5b435de0 AS |
2320 | return ret; |
2321 | } | |
2322 | ||
82d7f3c1 | 2323 | static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes) |
5b435de0 AS |
2324 | { |
2325 | struct sk_buff *pkt; | |
8da9d2c8 | 2326 | struct sk_buff_head pktq; |
5b435de0 | 2327 | u32 intstatus = 0; |
8da9d2c8 | 2328 | int ret = 0, prec_out, i; |
5b435de0 | 2329 | uint cnt = 0; |
8da9d2c8 | 2330 | u8 tx_prec_map, pkt_num; |
5b435de0 | 2331 | |
5b435de0 AS |
2332 | brcmf_dbg(TRACE, "Enter\n"); |
2333 | ||
2334 | tx_prec_map = ~bus->flowcontrol; | |
2335 | ||
2336 | /* Send frames until the limit or some other event */ | |
8da9d2c8 FL |
2337 | for (cnt = 0; (cnt < maxframes) && data_ok(bus);) { |
2338 | pkt_num = 1; | |
fed7ec44 HM |
2339 | if (down_interruptible(&bus->tx_seq_lock)) |
2340 | return cnt; | |
8da9d2c8 FL |
2341 | if (bus->txglom) |
2342 | pkt_num = min_t(u8, bus->tx_max - bus->tx_seq, | |
af1fa210 | 2343 | bus->sdiodev->txglomsz); |
8da9d2c8 FL |
2344 | pkt_num = min_t(u32, pkt_num, |
2345 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol)); | |
fed7ec44 HM |
2346 | __skb_queue_head_init(&pktq); |
2347 | spin_lock_bh(&bus->txq_lock); | |
8da9d2c8 FL |
2348 | for (i = 0; i < pkt_num; i++) { |
2349 | pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, | |
2350 | &prec_out); | |
2351 | if (pkt == NULL) | |
2352 | break; | |
2353 | __skb_queue_tail(&pktq, pkt); | |
5b435de0 | 2354 | } |
fed7ec44 HM |
2355 | spin_unlock_bh(&bus->txq_lock); |
2356 | if (i == 0) { | |
2357 | up(&bus->tx_seq_lock); | |
8da9d2c8 | 2358 | break; |
fed7ec44 | 2359 | } |
5b435de0 | 2360 | |
82d7f3c1 | 2361 | ret = brcmf_sdio_txpkt(bus, &pktq, SDPCM_DATA_CHANNEL); |
fed7ec44 HM |
2362 | up(&bus->tx_seq_lock); |
2363 | ||
8da9d2c8 | 2364 | cnt += i; |
5b435de0 AS |
2365 | |
2366 | /* In poll mode, need to check for other events */ | |
b6a8cf2c | 2367 | if (!bus->intr) { |
5b435de0 | 2368 | /* Check device status, signal pending interrupt */ |
38b0b0dd | 2369 | sdio_claim_host(bus->sdiodev->func[1]); |
5c15c23a FL |
2370 | ret = r_sdreg32(bus, &intstatus, |
2371 | offsetof(struct sdpcmd_regs, | |
2372 | intstatus)); | |
38b0b0dd | 2373 | sdio_release_host(bus->sdiodev->func[1]); |
80969836 | 2374 | bus->sdcnt.f2txdata++; |
5c15c23a | 2375 | if (ret != 0) |
5b435de0 AS |
2376 | break; |
2377 | if (intstatus & bus->hostintmask) | |
1d382273 | 2378 | atomic_set(&bus->ipend, 1); |
5b435de0 AS |
2379 | } |
2380 | } | |
2381 | ||
2382 | /* Deflow-control stack if needed */ | |
05dde977 | 2383 | if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) && |
c8bf3484 | 2384 | bus->txoff && (pktq_len(&bus->txq) < TXLOW)) { |
90d03ff7 HM |
2385 | bus->txoff = false; |
2386 | brcmf_txflowblock(bus->sdiodev->dev, false); | |
c8bf3484 | 2387 | } |
5b435de0 AS |
2388 | |
2389 | return cnt; | |
2390 | } | |
2391 | ||
fed7ec44 HM |
2392 | static int brcmf_sdio_tx_ctrlframe(struct brcmf_sdio *bus, u8 *frame, u16 len) |
2393 | { | |
2394 | u8 doff; | |
2395 | u16 pad; | |
2396 | uint retries = 0; | |
2397 | struct brcmf_sdio_hdrinfo hd_info = {0}; | |
2398 | int ret; | |
2399 | ||
2400 | brcmf_dbg(TRACE, "Enter\n"); | |
2401 | ||
2402 | /* Back the pointer to make room for bus header */ | |
2403 | frame -= bus->tx_hdrlen; | |
2404 | len += bus->tx_hdrlen; | |
2405 | ||
2406 | /* Add alignment padding (optional for ctl frames) */ | |
2407 | doff = ((unsigned long)frame % bus->head_align); | |
2408 | if (doff) { | |
2409 | frame -= doff; | |
2410 | len += doff; | |
2411 | memset(frame + bus->tx_hdrlen, 0, doff); | |
2412 | } | |
2413 | ||
2414 | /* Round send length to next SDIO block */ | |
2415 | pad = 0; | |
2416 | if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { | |
2417 | pad = bus->blocksize - (len % bus->blocksize); | |
2418 | if ((pad > bus->roundup) || (pad >= bus->blocksize)) | |
2419 | pad = 0; | |
2420 | } else if (len % bus->head_align) { | |
2421 | pad = bus->head_align - (len % bus->head_align); | |
2422 | } | |
2423 | len += pad; | |
2424 | ||
2425 | hd_info.len = len - pad; | |
2426 | hd_info.channel = SDPCM_CONTROL_CHANNEL; | |
2427 | hd_info.dat_offset = doff + bus->tx_hdrlen; | |
2428 | hd_info.seq_num = bus->tx_seq; | |
2429 | hd_info.lastfrm = true; | |
2430 | hd_info.tail_pad = pad; | |
2431 | brcmf_sdio_hdpack(bus, frame, &hd_info); | |
2432 | ||
2433 | if (bus->txglom) | |
2434 | brcmf_sdio_update_hwhdr(frame, len); | |
2435 | ||
2436 | brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), | |
2437 | frame, len, "Tx Frame:\n"); | |
2438 | brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) && | |
2439 | BRCMF_HDRS_ON(), | |
2440 | frame, min_t(u16, len, 16), "TxHdr:\n"); | |
2441 | ||
2442 | do { | |
2443 | ret = brcmf_sdiod_send_buf(bus->sdiodev, frame, len); | |
2444 | ||
2445 | if (ret < 0) | |
2446 | brcmf_sdio_txfail(bus); | |
2447 | else | |
2448 | bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP; | |
2449 | } while (ret < 0 && retries++ < TXRETRIES); | |
2450 | ||
2451 | return ret; | |
2452 | } | |
2453 | ||
82d7f3c1 | 2454 | static void brcmf_sdio_bus_stop(struct device *dev) |
a9ffda88 FL |
2455 | { |
2456 | u32 local_hostintmask; | |
2457 | u8 saveclk; | |
a9ffda88 FL |
2458 | int err; |
2459 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
0a332e46 | 2460 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
a9ffda88 FL |
2461 | struct brcmf_sdio *bus = sdiodev->bus; |
2462 | ||
2463 | brcmf_dbg(TRACE, "Enter\n"); | |
2464 | ||
2465 | if (bus->watchdog_tsk) { | |
2466 | send_sig(SIGTERM, bus->watchdog_tsk, 1); | |
2467 | kthread_stop(bus->watchdog_tsk); | |
2468 | bus->watchdog_tsk = NULL; | |
2469 | } | |
2470 | ||
bb350711 AS |
2471 | if (bus_if->state == BRCMF_BUS_DOWN) { |
2472 | sdio_claim_host(sdiodev->func[1]); | |
2473 | ||
2474 | /* Enable clock for device interrupts */ | |
2475 | brcmf_sdio_bus_sleep(bus, false, false); | |
2476 | ||
2477 | /* Disable and clear interrupts at the chip level also */ | |
2478 | w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask)); | |
2479 | local_hostintmask = bus->hostintmask; | |
2480 | bus->hostintmask = 0; | |
2481 | ||
2482 | /* Force backplane clocks to assure F2 interrupt propagates */ | |
2483 | saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, | |
2484 | &err); | |
2485 | if (!err) | |
2486 | brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, | |
2487 | (saveclk | SBSDIO_FORCE_HT), &err); | |
2488 | if (err) | |
2489 | brcmf_err("Failed to force clock for F2: err %d\n", | |
2490 | err); | |
a9ffda88 | 2491 | |
bb350711 AS |
2492 | /* Turn off the bus (F2), free any pending packets */ |
2493 | brcmf_dbg(INTR, "disable SDIO interrupts\n"); | |
2494 | sdio_disable_func(sdiodev->func[SDIO_FUNC_2]); | |
a9ffda88 | 2495 | |
bb350711 AS |
2496 | /* Clear any pending interrupts now that F2 is disabled */ |
2497 | w_sdreg32(bus, local_hostintmask, | |
2498 | offsetof(struct sdpcmd_regs, intstatus)); | |
a9ffda88 | 2499 | |
bb350711 | 2500 | sdio_release_host(sdiodev->func[1]); |
a9ffda88 | 2501 | } |
a9ffda88 FL |
2502 | /* Clear the data packet queues */ |
2503 | brcmu_pktq_flush(&bus->txq, true, NULL, NULL); | |
2504 | ||
2505 | /* Clear any held glomming stuff */ | |
2506 | if (bus->glomd) | |
2507 | brcmu_pkt_buf_free_skb(bus->glomd); | |
82d7f3c1 | 2508 | brcmf_sdio_free_glom(bus); |
a9ffda88 FL |
2509 | |
2510 | /* Clear rx control and wake any waiters */ | |
dd43a01c | 2511 | spin_lock_bh(&bus->rxctl_lock); |
a9ffda88 | 2512 | bus->rxlen = 0; |
dd43a01c | 2513 | spin_unlock_bh(&bus->rxctl_lock); |
82d7f3c1 | 2514 | brcmf_sdio_dcmd_resp_wake(bus); |
a9ffda88 FL |
2515 | |
2516 | /* Reset some F2 state stuff */ | |
2517 | bus->rxskip = false; | |
2518 | bus->tx_seq = bus->rx_seq = 0; | |
a9ffda88 FL |
2519 | } |
2520 | ||
82d7f3c1 | 2521 | static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus) |
ba89bf19 FL |
2522 | { |
2523 | unsigned long flags; | |
2524 | ||
668761ac HM |
2525 | if (bus->sdiodev->oob_irq_requested) { |
2526 | spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags); | |
2527 | if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) { | |
2528 | enable_irq(bus->sdiodev->pdata->oob_irq_nr); | |
2529 | bus->sdiodev->irq_en = true; | |
2530 | } | |
2531 | spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags); | |
ba89bf19 | 2532 | } |
ba89bf19 | 2533 | } |
ba89bf19 | 2534 | |
5cbb9c28 HM |
2535 | static void atomic_orr(int val, atomic_t *v) |
2536 | { | |
2537 | int old_val; | |
2538 | ||
2539 | old_val = atomic_read(v); | |
2540 | while (atomic_cmpxchg(v, old_val, val | old_val) != old_val) | |
2541 | old_val = atomic_read(v); | |
2542 | } | |
2543 | ||
4531603a FL |
2544 | static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus) |
2545 | { | |
cb7cf7be | 2546 | struct brcmf_core *buscore; |
4531603a FL |
2547 | u32 addr; |
2548 | unsigned long val; | |
5cbb9c28 | 2549 | int ret; |
4531603a | 2550 | |
cb7cf7be AS |
2551 | buscore = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); |
2552 | addr = buscore->base + offsetof(struct sdpcmd_regs, intstatus); | |
4531603a | 2553 | |
a39be27b | 2554 | val = brcmf_sdiod_regrl(bus->sdiodev, addr, &ret); |
4531603a FL |
2555 | bus->sdcnt.f1regdata++; |
2556 | if (ret != 0) | |
5cbb9c28 | 2557 | return ret; |
4531603a FL |
2558 | |
2559 | val &= bus->hostintmask; | |
2560 | atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE)); | |
2561 | ||
2562 | /* Clear interrupts */ | |
2563 | if (val) { | |
a39be27b | 2564 | brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret); |
4531603a | 2565 | bus->sdcnt.f1regdata++; |
5cbb9c28 | 2566 | atomic_orr(val, &bus->intstatus); |
4531603a FL |
2567 | } |
2568 | ||
2569 | return ret; | |
2570 | } | |
2571 | ||
82d7f3c1 | 2572 | static void brcmf_sdio_dpc(struct brcmf_sdio *bus) |
5b435de0 | 2573 | { |
4531603a FL |
2574 | u32 newstatus = 0; |
2575 | unsigned long intstatus; | |
5b435de0 | 2576 | uint txlimit = bus->txbound; /* Tx frames to send before resched */ |
b6a8cf2c | 2577 | uint framecnt; /* Temporary counter of tx/rx frames */ |
5cbb9c28 | 2578 | int err = 0; |
5b435de0 AS |
2579 | |
2580 | brcmf_dbg(TRACE, "Enter\n"); | |
2581 | ||
38b0b0dd | 2582 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
2583 | |
2584 | /* If waiting for HTAVAIL, check status */ | |
4a3da990 | 2585 | if (!bus->sr_enabled && bus->clkstate == CLK_PENDING) { |
5b435de0 AS |
2586 | u8 clkctl, devctl = 0; |
2587 | ||
8ae74654 | 2588 | #ifdef DEBUG |
5b435de0 | 2589 | /* Check for inconsistent device control */ |
a39be27b AS |
2590 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
2591 | SBSDIO_DEVICE_CTL, &err); | |
8ae74654 | 2592 | #endif /* DEBUG */ |
5b435de0 AS |
2593 | |
2594 | /* Read CSR, if clock on switch to AVAIL, else ignore */ | |
a39be27b AS |
2595 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
2596 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 2597 | |
c3203374 | 2598 | brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n", |
5b435de0 AS |
2599 | devctl, clkctl); |
2600 | ||
2601 | if (SBSDIO_HTAV(clkctl)) { | |
a39be27b AS |
2602 | devctl = brcmf_sdiod_regrb(bus->sdiodev, |
2603 | SBSDIO_DEVICE_CTL, &err); | |
5b435de0 | 2604 | devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
a39be27b AS |
2605 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, |
2606 | devctl, &err); | |
5b435de0 | 2607 | bus->clkstate = CLK_AVAIL; |
5b435de0 AS |
2608 | } |
2609 | } | |
2610 | ||
5b435de0 | 2611 | /* Make sure backplane clock is on */ |
82d7f3c1 | 2612 | brcmf_sdio_bus_sleep(bus, false, true); |
5b435de0 AS |
2613 | |
2614 | /* Pending interrupt indicates new device status */ | |
1d382273 FL |
2615 | if (atomic_read(&bus->ipend) > 0) { |
2616 | atomic_set(&bus->ipend, 0); | |
4531603a | 2617 | err = brcmf_sdio_intr_rstatus(bus); |
5b435de0 AS |
2618 | } |
2619 | ||
4531603a FL |
2620 | /* Start with leftover status bits */ |
2621 | intstatus = atomic_xchg(&bus->intstatus, 0); | |
5b435de0 AS |
2622 | |
2623 | /* Handle flow-control change: read new state in case our ack | |
2624 | * crossed another change interrupt. If change still set, assume | |
2625 | * FC ON for safety, let next loop through do the debounce. | |
2626 | */ | |
2627 | if (intstatus & I_HMB_FC_CHANGE) { | |
2628 | intstatus &= ~I_HMB_FC_CHANGE; | |
5c15c23a FL |
2629 | err = w_sdreg32(bus, I_HMB_FC_CHANGE, |
2630 | offsetof(struct sdpcmd_regs, intstatus)); | |
5b435de0 | 2631 | |
5c15c23a FL |
2632 | err = r_sdreg32(bus, &newstatus, |
2633 | offsetof(struct sdpcmd_regs, intstatus)); | |
80969836 | 2634 | bus->sdcnt.f1regdata += 2; |
4531603a FL |
2635 | atomic_set(&bus->fcstate, |
2636 | !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE))); | |
5b435de0 AS |
2637 | intstatus |= (newstatus & bus->hostintmask); |
2638 | } | |
2639 | ||
2640 | /* Handle host mailbox indication */ | |
2641 | if (intstatus & I_HMB_HOST_INT) { | |
2642 | intstatus &= ~I_HMB_HOST_INT; | |
82d7f3c1 | 2643 | intstatus |= brcmf_sdio_hostmail(bus); |
5b435de0 AS |
2644 | } |
2645 | ||
38b0b0dd | 2646 | sdio_release_host(bus->sdiodev->func[1]); |
7cdf57d3 | 2647 | |
5b435de0 AS |
2648 | /* Generally don't ask for these, can get CRC errors... */ |
2649 | if (intstatus & I_WR_OOSYNC) { | |
5e8149f5 | 2650 | brcmf_err("Dongle reports WR_OOSYNC\n"); |
5b435de0 AS |
2651 | intstatus &= ~I_WR_OOSYNC; |
2652 | } | |
2653 | ||
2654 | if (intstatus & I_RD_OOSYNC) { | |
5e8149f5 | 2655 | brcmf_err("Dongle reports RD_OOSYNC\n"); |
5b435de0 AS |
2656 | intstatus &= ~I_RD_OOSYNC; |
2657 | } | |
2658 | ||
2659 | if (intstatus & I_SBINT) { | |
5e8149f5 | 2660 | brcmf_err("Dongle reports SBINT\n"); |
5b435de0 AS |
2661 | intstatus &= ~I_SBINT; |
2662 | } | |
2663 | ||
2664 | /* Would be active due to wake-wlan in gSPI */ | |
2665 | if (intstatus & I_CHIPACTIVE) { | |
2666 | brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n"); | |
2667 | intstatus &= ~I_CHIPACTIVE; | |
2668 | } | |
2669 | ||
2670 | /* Ignore frame indications if rxskip is set */ | |
2671 | if (bus->rxskip) | |
2672 | intstatus &= ~I_HMB_FRAME_IND; | |
2673 | ||
2674 | /* On frame indication, read available frames */ | |
b6a8cf2c HM |
2675 | if ((intstatus & I_HMB_FRAME_IND) && (bus->clkstate == CLK_AVAIL)) { |
2676 | brcmf_sdio_readframes(bus, bus->rxbound); | |
4754fcee | 2677 | if (!bus->rxpending) |
5b435de0 | 2678 | intstatus &= ~I_HMB_FRAME_IND; |
5b435de0 AS |
2679 | } |
2680 | ||
2681 | /* Keep still-pending events for next scheduling */ | |
5cbb9c28 HM |
2682 | if (intstatus) |
2683 | atomic_orr(intstatus, &bus->intstatus); | |
5b435de0 | 2684 | |
82d7f3c1 | 2685 | brcmf_sdio_clrintr(bus); |
ba89bf19 | 2686 | |
fed7ec44 HM |
2687 | if (bus->ctrl_frame_stat && (bus->clkstate == CLK_AVAIL) && |
2688 | (down_interruptible(&bus->tx_seq_lock) == 0)) { | |
2689 | if (data_ok(bus)) { | |
2690 | sdio_claim_host(bus->sdiodev->func[1]); | |
2691 | err = brcmf_sdio_tx_ctrlframe(bus, bus->ctrl_frame_buf, | |
2692 | bus->ctrl_frame_len); | |
2693 | sdio_release_host(bus->sdiodev->func[1]); | |
81c7883c | 2694 | |
fed7ec44 HM |
2695 | bus->ctrl_frame_stat = false; |
2696 | brcmf_sdio_wait_event_wakeup(bus); | |
2697 | } | |
2698 | up(&bus->tx_seq_lock); | |
5b435de0 AS |
2699 | } |
2700 | /* Send queued frames (limit 1 if rx may still be pending) */ | |
fed7ec44 HM |
2701 | if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) && |
2702 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit && | |
2703 | data_ok(bus)) { | |
4754fcee FL |
2704 | framecnt = bus->rxpending ? min(txlimit, bus->txminmax) : |
2705 | txlimit; | |
b6a8cf2c | 2706 | brcmf_sdio_sendfromq(bus, framecnt); |
5b435de0 AS |
2707 | } |
2708 | ||
bb350711 | 2709 | if (!brcmf_bus_ready(bus->sdiodev->bus_if) || (err != 0)) { |
5e8149f5 | 2710 | brcmf_err("failed backplane access over SDIO, halting operation\n"); |
4531603a FL |
2711 | atomic_set(&bus->intstatus, 0); |
2712 | } else if (atomic_read(&bus->intstatus) || | |
2713 | atomic_read(&bus->ipend) > 0 || | |
2714 | (!atomic_read(&bus->fcstate) && | |
2715 | brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && | |
b6a8cf2c | 2716 | data_ok(bus))) { |
fccfe930 | 2717 | atomic_inc(&bus->dpc_tskcnt); |
5b435de0 | 2718 | } |
5b435de0 AS |
2719 | } |
2720 | ||
82d7f3c1 | 2721 | static struct pktq *brcmf_sdio_bus_gettxq(struct device *dev) |
e2432b67 AS |
2722 | { |
2723 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
2724 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
2725 | struct brcmf_sdio *bus = sdiodev->bus; | |
2726 | ||
2727 | return &bus->txq; | |
2728 | } | |
2729 | ||
82d7f3c1 | 2730 | static int brcmf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt) |
5b435de0 AS |
2731 | { |
2732 | int ret = -EBADE; | |
44ff5660 | 2733 | uint prec; |
bf347bb9 | 2734 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 2735 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
bf347bb9 | 2736 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 | 2737 | |
44ff5660 | 2738 | brcmf_dbg(TRACE, "Enter: pkt: data %p len %d\n", pkt->data, pkt->len); |
5b435de0 AS |
2739 | |
2740 | /* Add space for the header */ | |
706478cb | 2741 | skb_push(pkt, bus->tx_hdrlen); |
5b435de0 AS |
2742 | /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */ |
2743 | ||
2744 | prec = prio2prec((pkt->priority & PRIOMASK)); | |
2745 | ||
2746 | /* Check for existing queue, current flow-control, | |
2747 | pending event, or pending clock */ | |
2748 | brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq)); | |
80969836 | 2749 | bus->sdcnt.fcqueued++; |
5b435de0 AS |
2750 | |
2751 | /* Priority based enq */ | |
fed7ec44 | 2752 | spin_lock_bh(&bus->txq_lock); |
5aa9f0ea AS |
2753 | /* reset bus_flags in packet cb */ |
2754 | *(u16 *)(pkt->cb) = 0; | |
23677ce3 | 2755 | if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) { |
706478cb | 2756 | skb_pull(pkt, bus->tx_hdrlen); |
5e8149f5 | 2757 | brcmf_err("out of bus->txq !!!\n"); |
5b435de0 AS |
2758 | ret = -ENOSR; |
2759 | } else { | |
2760 | ret = 0; | |
2761 | } | |
5b435de0 | 2762 | |
c8bf3484 | 2763 | if (pktq_len(&bus->txq) >= TXHI) { |
90d03ff7 HM |
2764 | bus->txoff = true; |
2765 | brcmf_txflowblock(bus->sdiodev->dev, true); | |
c8bf3484 | 2766 | } |
fed7ec44 | 2767 | spin_unlock_bh(&bus->txq_lock); |
5b435de0 | 2768 | |
8ae74654 | 2769 | #ifdef DEBUG |
5b435de0 AS |
2770 | if (pktq_plen(&bus->txq, prec) > qcount[prec]) |
2771 | qcount[prec] = pktq_plen(&bus->txq, prec); | |
2772 | #endif | |
f1e68c2e | 2773 | |
fccfe930 AS |
2774 | if (atomic_read(&bus->dpc_tskcnt) == 0) { |
2775 | atomic_inc(&bus->dpc_tskcnt); | |
f1e68c2e | 2776 | queue_work(bus->brcmf_wq, &bus->datawork); |
5b435de0 AS |
2777 | } |
2778 | ||
2779 | return ret; | |
2780 | } | |
2781 | ||
8ae74654 | 2782 | #ifdef DEBUG |
5b435de0 AS |
2783 | #define CONSOLE_LINE_MAX 192 |
2784 | ||
82d7f3c1 | 2785 | static int brcmf_sdio_readconsole(struct brcmf_sdio *bus) |
5b435de0 AS |
2786 | { |
2787 | struct brcmf_console *c = &bus->console; | |
2788 | u8 line[CONSOLE_LINE_MAX], ch; | |
2789 | u32 n, idx, addr; | |
2790 | int rv; | |
2791 | ||
2792 | /* Don't do anything until FWREADY updates console address */ | |
2793 | if (bus->console_addr == 0) | |
2794 | return 0; | |
2795 | ||
2796 | /* Read console log struct */ | |
2797 | addr = bus->console_addr + offsetof(struct rte_console, log_le); | |
a39be27b AS |
2798 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&c->log_le, |
2799 | sizeof(c->log_le)); | |
5b435de0 AS |
2800 | if (rv < 0) |
2801 | return rv; | |
2802 | ||
2803 | /* Allocate console buffer (one time only) */ | |
2804 | if (c->buf == NULL) { | |
2805 | c->bufsize = le32_to_cpu(c->log_le.buf_size); | |
2806 | c->buf = kmalloc(c->bufsize, GFP_ATOMIC); | |
2807 | if (c->buf == NULL) | |
2808 | return -ENOMEM; | |
2809 | } | |
2810 | ||
2811 | idx = le32_to_cpu(c->log_le.idx); | |
2812 | ||
2813 | /* Protect against corrupt value */ | |
2814 | if (idx > c->bufsize) | |
2815 | return -EBADE; | |
2816 | ||
2817 | /* Skip reading the console buffer if the index pointer | |
2818 | has not moved */ | |
2819 | if (idx == c->last) | |
2820 | return 0; | |
2821 | ||
2822 | /* Read the console buffer */ | |
2823 | addr = le32_to_cpu(c->log_le.buf); | |
a39be27b | 2824 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, c->buf, c->bufsize); |
5b435de0 AS |
2825 | if (rv < 0) |
2826 | return rv; | |
2827 | ||
2828 | while (c->last != idx) { | |
2829 | for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { | |
2830 | if (c->last == idx) { | |
2831 | /* This would output a partial line. | |
2832 | * Instead, back up | |
2833 | * the buffer pointer and output this | |
2834 | * line next time around. | |
2835 | */ | |
2836 | if (c->last >= n) | |
2837 | c->last -= n; | |
2838 | else | |
2839 | c->last = c->bufsize - n; | |
2840 | goto break2; | |
2841 | } | |
2842 | ch = c->buf[c->last]; | |
2843 | c->last = (c->last + 1) % c->bufsize; | |
2844 | if (ch == '\n') | |
2845 | break; | |
2846 | line[n] = ch; | |
2847 | } | |
2848 | ||
2849 | if (n > 0) { | |
2850 | if (line[n - 1] == '\r') | |
2851 | n--; | |
2852 | line[n] = 0; | |
18aad4f8 | 2853 | pr_debug("CONSOLE: %s\n", line); |
5b435de0 AS |
2854 | } |
2855 | } | |
2856 | break2: | |
2857 | ||
2858 | return 0; | |
2859 | } | |
8ae74654 | 2860 | #endif /* DEBUG */ |
5b435de0 | 2861 | |
fcf094f4 | 2862 | static int |
82d7f3c1 | 2863 | brcmf_sdio_bus_txctl(struct device *dev, unsigned char *msg, uint msglen) |
5b435de0 | 2864 | { |
47a1ce78 | 2865 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 2866 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
47a1ce78 | 2867 | struct brcmf_sdio *bus = sdiodev->bus; |
fed7ec44 | 2868 | int ret = -1; |
5b435de0 AS |
2869 | |
2870 | brcmf_dbg(TRACE, "Enter\n"); | |
2871 | ||
fed7ec44 HM |
2872 | if (down_interruptible(&bus->tx_seq_lock)) |
2873 | return -EINTR; | |
8da9d2c8 | 2874 | |
5b435de0 AS |
2875 | if (!data_ok(bus)) { |
2876 | brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n", | |
2877 | bus->tx_max, bus->tx_seq); | |
fed7ec44 | 2878 | up(&bus->tx_seq_lock); |
5b435de0 | 2879 | /* Send from dpc */ |
fed7ec44 HM |
2880 | bus->ctrl_frame_buf = msg; |
2881 | bus->ctrl_frame_len = msglen; | |
2882 | bus->ctrl_frame_stat = true; | |
5b435de0 | 2883 | |
fd67dc83 FL |
2884 | wait_event_interruptible_timeout(bus->ctrl_wait, |
2885 | !bus->ctrl_frame_stat, | |
2886 | msecs_to_jiffies(2000)); | |
5b435de0 | 2887 | |
23677ce3 | 2888 | if (!bus->ctrl_frame_stat) { |
c3203374 | 2889 | brcmf_dbg(SDIO, "ctrl_frame_stat == false\n"); |
5b435de0 AS |
2890 | ret = 0; |
2891 | } else { | |
c3203374 | 2892 | brcmf_dbg(SDIO, "ctrl_frame_stat == true\n"); |
fed7ec44 HM |
2893 | bus->ctrl_frame_stat = false; |
2894 | if (down_interruptible(&bus->tx_seq_lock)) | |
2895 | return -EINTR; | |
5b435de0 AS |
2896 | ret = -1; |
2897 | } | |
2898 | } | |
5b435de0 | 2899 | if (ret == -1) { |
fed7ec44 HM |
2900 | sdio_claim_host(bus->sdiodev->func[1]); |
2901 | brcmf_sdio_bus_sleep(bus, false, false); | |
2902 | ret = brcmf_sdio_tx_ctrlframe(bus, msg, msglen); | |
2903 | sdio_release_host(bus->sdiodev->func[1]); | |
2904 | up(&bus->tx_seq_lock); | |
5b435de0 AS |
2905 | } |
2906 | ||
5b435de0 | 2907 | if (ret) |
80969836 | 2908 | bus->sdcnt.tx_ctlerrs++; |
5b435de0 | 2909 | else |
80969836 | 2910 | bus->sdcnt.tx_ctlpkts++; |
5b435de0 AS |
2911 | |
2912 | return ret ? -EIO : 0; | |
2913 | } | |
2914 | ||
80969836 | 2915 | #ifdef DEBUG |
4fc0d016 AS |
2916 | static int brcmf_sdio_dump_console(struct brcmf_sdio *bus, |
2917 | struct sdpcm_shared *sh, char __user *data, | |
2918 | size_t count) | |
2919 | { | |
2920 | u32 addr, console_ptr, console_size, console_index; | |
2921 | char *conbuf = NULL; | |
2922 | __le32 sh_val; | |
2923 | int rv; | |
2924 | loff_t pos = 0; | |
2925 | int nbytes = 0; | |
2926 | ||
2927 | /* obtain console information from device memory */ | |
2928 | addr = sh->console_addr + offsetof(struct rte_console, log_le); | |
a39be27b AS |
2929 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, |
2930 | (u8 *)&sh_val, sizeof(u32)); | |
4fc0d016 AS |
2931 | if (rv < 0) |
2932 | return rv; | |
2933 | console_ptr = le32_to_cpu(sh_val); | |
2934 | ||
2935 | addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size); | |
a39be27b AS |
2936 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, |
2937 | (u8 *)&sh_val, sizeof(u32)); | |
4fc0d016 AS |
2938 | if (rv < 0) |
2939 | return rv; | |
2940 | console_size = le32_to_cpu(sh_val); | |
2941 | ||
2942 | addr = sh->console_addr + offsetof(struct rte_console, log_le.idx); | |
a39be27b AS |
2943 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, |
2944 | (u8 *)&sh_val, sizeof(u32)); | |
4fc0d016 AS |
2945 | if (rv < 0) |
2946 | return rv; | |
2947 | console_index = le32_to_cpu(sh_val); | |
2948 | ||
2949 | /* allocate buffer for console data */ | |
2950 | if (console_size <= CONSOLE_BUFFER_MAX) | |
2951 | conbuf = vzalloc(console_size+1); | |
2952 | ||
2953 | if (!conbuf) | |
2954 | return -ENOMEM; | |
2955 | ||
2956 | /* obtain the console data from device */ | |
2957 | conbuf[console_size] = '\0'; | |
a39be27b AS |
2958 | rv = brcmf_sdiod_ramrw(bus->sdiodev, false, console_ptr, (u8 *)conbuf, |
2959 | console_size); | |
4fc0d016 AS |
2960 | if (rv < 0) |
2961 | goto done; | |
2962 | ||
2963 | rv = simple_read_from_buffer(data, count, &pos, | |
2964 | conbuf + console_index, | |
2965 | console_size - console_index); | |
2966 | if (rv < 0) | |
2967 | goto done; | |
2968 | ||
2969 | nbytes = rv; | |
2970 | if (console_index > 0) { | |
2971 | pos = 0; | |
2972 | rv = simple_read_from_buffer(data+nbytes, count, &pos, | |
2973 | conbuf, console_index - 1); | |
2974 | if (rv < 0) | |
2975 | goto done; | |
2976 | rv += nbytes; | |
2977 | } | |
2978 | done: | |
2979 | vfree(conbuf); | |
2980 | return rv; | |
2981 | } | |
2982 | ||
2983 | static int brcmf_sdio_trap_info(struct brcmf_sdio *bus, struct sdpcm_shared *sh, | |
2984 | char __user *data, size_t count) | |
2985 | { | |
2986 | int error, res; | |
2987 | char buf[350]; | |
2988 | struct brcmf_trap_info tr; | |
4fc0d016 AS |
2989 | loff_t pos = 0; |
2990 | ||
baa9e609 PH |
2991 | if ((sh->flags & SDPCM_SHARED_TRAP) == 0) { |
2992 | brcmf_dbg(INFO, "no trap in firmware\n"); | |
4fc0d016 | 2993 | return 0; |
baa9e609 | 2994 | } |
4fc0d016 | 2995 | |
a39be27b AS |
2996 | error = brcmf_sdiod_ramrw(bus->sdiodev, false, sh->trap_addr, (u8 *)&tr, |
2997 | sizeof(struct brcmf_trap_info)); | |
4fc0d016 AS |
2998 | if (error < 0) |
2999 | return error; | |
3000 | ||
4fc0d016 AS |
3001 | res = scnprintf(buf, sizeof(buf), |
3002 | "dongle trap info: type 0x%x @ epc 0x%08x\n" | |
3003 | " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n" | |
3004 | " lr 0x%08x pc 0x%08x offset 0x%x\n" | |
3005 | " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n" | |
3006 | " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n", | |
3007 | le32_to_cpu(tr.type), le32_to_cpu(tr.epc), | |
3008 | le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr), | |
3009 | le32_to_cpu(tr.r13), le32_to_cpu(tr.r14), | |
9bd02c6b | 3010 | le32_to_cpu(tr.pc), sh->trap_addr, |
4fc0d016 AS |
3011 | le32_to_cpu(tr.r0), le32_to_cpu(tr.r1), |
3012 | le32_to_cpu(tr.r2), le32_to_cpu(tr.r3), | |
3013 | le32_to_cpu(tr.r4), le32_to_cpu(tr.r5), | |
3014 | le32_to_cpu(tr.r6), le32_to_cpu(tr.r7)); | |
3015 | ||
baa9e609 | 3016 | return simple_read_from_buffer(data, count, &pos, buf, res); |
4fc0d016 AS |
3017 | } |
3018 | ||
3019 | static int brcmf_sdio_assert_info(struct brcmf_sdio *bus, | |
3020 | struct sdpcm_shared *sh, char __user *data, | |
3021 | size_t count) | |
3022 | { | |
3023 | int error = 0; | |
3024 | char buf[200]; | |
3025 | char file[80] = "?"; | |
3026 | char expr[80] = "<???>"; | |
3027 | int res; | |
3028 | loff_t pos = 0; | |
3029 | ||
3030 | if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) { | |
3031 | brcmf_dbg(INFO, "firmware not built with -assert\n"); | |
3032 | return 0; | |
3033 | } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) { | |
3034 | brcmf_dbg(INFO, "no assert in dongle\n"); | |
3035 | return 0; | |
3036 | } | |
3037 | ||
38b0b0dd | 3038 | sdio_claim_host(bus->sdiodev->func[1]); |
4fc0d016 | 3039 | if (sh->assert_file_addr != 0) { |
a39be27b AS |
3040 | error = brcmf_sdiod_ramrw(bus->sdiodev, false, |
3041 | sh->assert_file_addr, (u8 *)file, 80); | |
4fc0d016 AS |
3042 | if (error < 0) |
3043 | return error; | |
3044 | } | |
3045 | if (sh->assert_exp_addr != 0) { | |
a39be27b AS |
3046 | error = brcmf_sdiod_ramrw(bus->sdiodev, false, |
3047 | sh->assert_exp_addr, (u8 *)expr, 80); | |
4fc0d016 AS |
3048 | if (error < 0) |
3049 | return error; | |
3050 | } | |
38b0b0dd | 3051 | sdio_release_host(bus->sdiodev->func[1]); |
4fc0d016 AS |
3052 | |
3053 | res = scnprintf(buf, sizeof(buf), | |
3054 | "dongle assert: %s:%d: assert(%s)\n", | |
3055 | file, sh->assert_line, expr); | |
3056 | return simple_read_from_buffer(data, count, &pos, buf, res); | |
3057 | } | |
3058 | ||
82d7f3c1 | 3059 | static int brcmf_sdio_checkdied(struct brcmf_sdio *bus) |
4fc0d016 AS |
3060 | { |
3061 | int error; | |
3062 | struct sdpcm_shared sh; | |
3063 | ||
4fc0d016 | 3064 | error = brcmf_sdio_readshared(bus, &sh); |
4fc0d016 AS |
3065 | |
3066 | if (error < 0) | |
3067 | return error; | |
3068 | ||
3069 | if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) | |
3070 | brcmf_dbg(INFO, "firmware not built with -assert\n"); | |
3071 | else if (sh.flags & SDPCM_SHARED_ASSERT) | |
5e8149f5 | 3072 | brcmf_err("assertion in dongle\n"); |
4fc0d016 AS |
3073 | |
3074 | if (sh.flags & SDPCM_SHARED_TRAP) | |
5e8149f5 | 3075 | brcmf_err("firmware trap in dongle\n"); |
4fc0d016 AS |
3076 | |
3077 | return 0; | |
3078 | } | |
3079 | ||
82d7f3c1 AS |
3080 | static int brcmf_sdio_died_dump(struct brcmf_sdio *bus, char __user *data, |
3081 | size_t count, loff_t *ppos) | |
4fc0d016 AS |
3082 | { |
3083 | int error = 0; | |
3084 | struct sdpcm_shared sh; | |
3085 | int nbytes = 0; | |
3086 | loff_t pos = *ppos; | |
3087 | ||
3088 | if (pos != 0) | |
3089 | return 0; | |
3090 | ||
4fc0d016 AS |
3091 | error = brcmf_sdio_readshared(bus, &sh); |
3092 | if (error < 0) | |
3093 | goto done; | |
3094 | ||
3095 | error = brcmf_sdio_assert_info(bus, &sh, data, count); | |
3096 | if (error < 0) | |
3097 | goto done; | |
4fc0d016 | 3098 | nbytes = error; |
baa9e609 PH |
3099 | |
3100 | error = brcmf_sdio_trap_info(bus, &sh, data+nbytes, count); | |
4fc0d016 AS |
3101 | if (error < 0) |
3102 | goto done; | |
baa9e609 PH |
3103 | nbytes += error; |
3104 | ||
3105 | error = brcmf_sdio_dump_console(bus, &sh, data+nbytes, count); | |
3106 | if (error < 0) | |
3107 | goto done; | |
3108 | nbytes += error; | |
4fc0d016 | 3109 | |
baa9e609 PH |
3110 | error = nbytes; |
3111 | *ppos += nbytes; | |
4fc0d016 | 3112 | done: |
4fc0d016 AS |
3113 | return error; |
3114 | } | |
3115 | ||
3116 | static ssize_t brcmf_sdio_forensic_read(struct file *f, char __user *data, | |
3117 | size_t count, loff_t *ppos) | |
3118 | { | |
3119 | struct brcmf_sdio *bus = f->private_data; | |
3120 | int res; | |
3121 | ||
82d7f3c1 | 3122 | res = brcmf_sdio_died_dump(bus, data, count, ppos); |
4fc0d016 AS |
3123 | if (res > 0) |
3124 | *ppos += res; | |
3125 | return (ssize_t)res; | |
3126 | } | |
3127 | ||
3128 | static const struct file_operations brcmf_sdio_forensic_ops = { | |
3129 | .owner = THIS_MODULE, | |
3130 | .open = simple_open, | |
3131 | .read = brcmf_sdio_forensic_read | |
3132 | }; | |
3133 | ||
80969836 AS |
3134 | static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) |
3135 | { | |
3136 | struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr; | |
4fc0d016 | 3137 | struct dentry *dentry = brcmf_debugfs_get_devdir(drvr); |
80969836 | 3138 | |
4fc0d016 AS |
3139 | if (IS_ERR_OR_NULL(dentry)) |
3140 | return; | |
3141 | ||
3142 | debugfs_create_file("forensics", S_IRUGO, dentry, bus, | |
3143 | &brcmf_sdio_forensic_ops); | |
80969836 | 3144 | brcmf_debugfs_create_sdio_count(drvr, &bus->sdcnt); |
0801e6c5 DK |
3145 | debugfs_create_u32("console_interval", 0644, dentry, |
3146 | &bus->console_interval); | |
80969836 AS |
3147 | } |
3148 | #else | |
82d7f3c1 | 3149 | static int brcmf_sdio_checkdied(struct brcmf_sdio *bus) |
4fc0d016 AS |
3150 | { |
3151 | return 0; | |
3152 | } | |
3153 | ||
80969836 AS |
3154 | static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) |
3155 | { | |
3156 | } | |
3157 | #endif /* DEBUG */ | |
3158 | ||
fcf094f4 | 3159 | static int |
82d7f3c1 | 3160 | brcmf_sdio_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen) |
5b435de0 AS |
3161 | { |
3162 | int timeleft; | |
3163 | uint rxlen = 0; | |
3164 | bool pending; | |
dd43a01c | 3165 | u8 *buf; |
532cdd3b | 3166 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 3167 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
532cdd3b | 3168 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 AS |
3169 | |
3170 | brcmf_dbg(TRACE, "Enter\n"); | |
3171 | ||
3172 | /* Wait until control frame is available */ | |
82d7f3c1 | 3173 | timeleft = brcmf_sdio_dcmd_resp_wait(bus, &bus->rxlen, &pending); |
5b435de0 | 3174 | |
dd43a01c | 3175 | spin_lock_bh(&bus->rxctl_lock); |
5b435de0 AS |
3176 | rxlen = bus->rxlen; |
3177 | memcpy(msg, bus->rxctl, min(msglen, rxlen)); | |
dd43a01c FL |
3178 | bus->rxctl = NULL; |
3179 | buf = bus->rxctl_orig; | |
3180 | bus->rxctl_orig = NULL; | |
5b435de0 | 3181 | bus->rxlen = 0; |
dd43a01c FL |
3182 | spin_unlock_bh(&bus->rxctl_lock); |
3183 | vfree(buf); | |
5b435de0 AS |
3184 | |
3185 | if (rxlen) { | |
3186 | brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n", | |
3187 | rxlen, msglen); | |
3188 | } else if (timeleft == 0) { | |
5e8149f5 | 3189 | brcmf_err("resumed on timeout\n"); |
82d7f3c1 | 3190 | brcmf_sdio_checkdied(bus); |
23677ce3 | 3191 | } else if (pending) { |
5b435de0 AS |
3192 | brcmf_dbg(CTL, "cancelled\n"); |
3193 | return -ERESTARTSYS; | |
3194 | } else { | |
3195 | brcmf_dbg(CTL, "resumed for unknown reason?\n"); | |
82d7f3c1 | 3196 | brcmf_sdio_checkdied(bus); |
5b435de0 AS |
3197 | } |
3198 | ||
3199 | if (rxlen) | |
80969836 | 3200 | bus->sdcnt.rx_ctlpkts++; |
5b435de0 | 3201 | else |
80969836 | 3202 | bus->sdcnt.rx_ctlerrs++; |
5b435de0 AS |
3203 | |
3204 | return rxlen ? (int)rxlen : -ETIMEDOUT; | |
3205 | } | |
3206 | ||
a74d036f HM |
3207 | #ifdef DEBUG |
3208 | static bool | |
3209 | brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr, | |
3210 | u8 *ram_data, uint ram_sz) | |
3211 | { | |
3212 | char *ram_cmp; | |
3213 | int err; | |
3214 | bool ret = true; | |
3215 | int address; | |
3216 | int offset; | |
3217 | int len; | |
3218 | ||
3219 | /* read back and verify */ | |
3220 | brcmf_dbg(INFO, "Compare RAM dl & ul at 0x%08x; size=%d\n", ram_addr, | |
3221 | ram_sz); | |
3222 | ram_cmp = kmalloc(MEMBLOCK, GFP_KERNEL); | |
3223 | /* do not proceed while no memory but */ | |
3224 | if (!ram_cmp) | |
3225 | return true; | |
3226 | ||
3227 | address = ram_addr; | |
3228 | offset = 0; | |
3229 | while (offset < ram_sz) { | |
3230 | len = ((offset + MEMBLOCK) < ram_sz) ? MEMBLOCK : | |
3231 | ram_sz - offset; | |
3232 | err = brcmf_sdiod_ramrw(sdiodev, false, address, ram_cmp, len); | |
3233 | if (err) { | |
3234 | brcmf_err("error %d on reading %d membytes at 0x%08x\n", | |
3235 | err, len, address); | |
3236 | ret = false; | |
3237 | break; | |
3238 | } else if (memcmp(ram_cmp, &ram_data[offset], len)) { | |
3239 | brcmf_err("Downloaded RAM image is corrupted, block offset is %d, len is %d\n", | |
3240 | offset, len); | |
3241 | ret = false; | |
3242 | break; | |
3243 | } | |
3244 | offset += len; | |
3245 | address += len; | |
3246 | } | |
3247 | ||
3248 | kfree(ram_cmp); | |
3249 | ||
3250 | return ret; | |
3251 | } | |
3252 | #else /* DEBUG */ | |
3253 | static bool | |
3254 | brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr, | |
3255 | u8 *ram_data, uint ram_sz) | |
3256 | { | |
3257 | return true; | |
3258 | } | |
3259 | #endif /* DEBUG */ | |
3260 | ||
3355650c AS |
3261 | static int brcmf_sdio_download_code_file(struct brcmf_sdio *bus, |
3262 | const struct firmware *fw) | |
5b435de0 | 3263 | { |
f2c44fe7 | 3264 | int err; |
f2c44fe7 | 3265 | |
a74d036f HM |
3266 | brcmf_dbg(TRACE, "Enter\n"); |
3267 | ||
f9951c13 HM |
3268 | err = brcmf_sdiod_ramrw(bus->sdiodev, true, bus->ci->rambase, |
3269 | (u8 *)fw->data, fw->size); | |
3270 | if (err) | |
3271 | brcmf_err("error %d on writing %d membytes at 0x%08x\n", | |
3272 | err, (int)fw->size, bus->ci->rambase); | |
3273 | else if (!brcmf_sdio_verifymemory(bus->sdiodev, bus->ci->rambase, | |
3274 | (u8 *)fw->data, fw->size)) | |
3275 | err = -EIO; | |
5b435de0 | 3276 | |
f2c44fe7 | 3277 | return err; |
5b435de0 AS |
3278 | } |
3279 | ||
3355650c AS |
3280 | static int brcmf_sdio_download_nvram(struct brcmf_sdio *bus, |
3281 | const struct firmware *nv) | |
5b435de0 | 3282 | { |
a74d036f HM |
3283 | void *vars; |
3284 | u32 varsz; | |
3285 | int address; | |
3286 | int err; | |
3287 | ||
3288 | brcmf_dbg(TRACE, "Enter\n"); | |
5b435de0 | 3289 | |
dabedab9 | 3290 | vars = brcmf_fw_nvram_strip(nv, &varsz); |
5b435de0 | 3291 | |
a74d036f HM |
3292 | if (vars == NULL) |
3293 | return -EINVAL; | |
3294 | ||
3295 | address = bus->ci->ramsize - varsz + bus->ci->rambase; | |
3296 | err = brcmf_sdiod_ramrw(bus->sdiodev, true, address, vars, varsz); | |
3297 | if (err) | |
3298 | brcmf_err("error %d on writing %d nvram bytes at 0x%08x\n", | |
3299 | err, varsz, address); | |
3300 | else if (!brcmf_sdio_verifymemory(bus->sdiodev, address, vars, varsz)) | |
3301 | err = -EIO; | |
3302 | ||
dabedab9 | 3303 | brcmf_fw_nvram_free(vars); |
a74d036f HM |
3304 | |
3305 | return err; | |
5b435de0 AS |
3306 | } |
3307 | ||
82d7f3c1 | 3308 | static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus) |
5b435de0 | 3309 | { |
82d7f3c1 | 3310 | int bcmerror = -EFAULT; |
3355650c AS |
3311 | const struct firmware *fw; |
3312 | u32 rstvec; | |
82d7f3c1 AS |
3313 | |
3314 | sdio_claim_host(bus->sdiodev->func[1]); | |
3315 | brcmf_sdio_clkctl(bus, CLK_AVAIL, false); | |
5b435de0 AS |
3316 | |
3317 | /* Keep arm in reset */ | |
cb7cf7be | 3318 | brcmf_chip_enter_download(bus->ci); |
3355650c AS |
3319 | |
3320 | fw = brcmf_sdio_get_fw(bus, BRCMF_FIRMWARE_BIN); | |
3321 | if (fw == NULL) { | |
3322 | bcmerror = -ENOENT; | |
5b435de0 AS |
3323 | goto err; |
3324 | } | |
3325 | ||
3355650c AS |
3326 | rstvec = get_unaligned_le32(fw->data); |
3327 | brcmf_dbg(SDIO, "firmware rstvec: %x\n", rstvec); | |
3328 | ||
3329 | bcmerror = brcmf_sdio_download_code_file(bus, fw); | |
3330 | release_firmware(fw); | |
3331 | if (bcmerror) { | |
5e8149f5 | 3332 | brcmf_err("dongle image file download failed\n"); |
5b435de0 AS |
3333 | goto err; |
3334 | } | |
3335 | ||
3355650c AS |
3336 | fw = brcmf_sdio_get_fw(bus, BRCMF_FIRMWARE_NVRAM); |
3337 | if (fw == NULL) { | |
3338 | bcmerror = -ENOENT; | |
3339 | goto err; | |
3340 | } | |
3341 | ||
3342 | bcmerror = brcmf_sdio_download_nvram(bus, fw); | |
3343 | release_firmware(fw); | |
3344 | if (bcmerror) { | |
5e8149f5 | 3345 | brcmf_err("dongle nvram file download failed\n"); |
3eaa956c FL |
3346 | goto err; |
3347 | } | |
5b435de0 AS |
3348 | |
3349 | /* Take arm out of reset */ | |
cb7cf7be | 3350 | if (!brcmf_chip_exit_download(bus->ci, rstvec)) { |
5e8149f5 | 3351 | brcmf_err("error getting out of ARM core reset\n"); |
5b435de0 AS |
3352 | goto err; |
3353 | } | |
3354 | ||
3355650c | 3355 | /* Allow HT Clock now that the ARM is running. */ |
bb350711 | 3356 | brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_LOAD); |
5b435de0 AS |
3357 | bcmerror = 0; |
3358 | ||
3359 | err: | |
82d7f3c1 AS |
3360 | brcmf_sdio_clkctl(bus, CLK_SDONLY, false); |
3361 | sdio_release_host(bus->sdiodev->func[1]); | |
5b435de0 AS |
3362 | return bcmerror; |
3363 | } | |
3364 | ||
82d7f3c1 | 3365 | static void brcmf_sdio_sr_init(struct brcmf_sdio *bus) |
4a3da990 PH |
3366 | { |
3367 | int err = 0; | |
3368 | u8 val; | |
3369 | ||
3370 | brcmf_dbg(TRACE, "Enter\n"); | |
3371 | ||
a39be27b | 3372 | val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, &err); |
4a3da990 PH |
3373 | if (err) { |
3374 | brcmf_err("error reading SBSDIO_FUNC1_WAKEUPCTRL\n"); | |
3375 | return; | |
3376 | } | |
3377 | ||
3378 | val |= 1 << SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT; | |
a39be27b | 3379 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, val, &err); |
4a3da990 PH |
3380 | if (err) { |
3381 | brcmf_err("error writing SBSDIO_FUNC1_WAKEUPCTRL\n"); | |
3382 | return; | |
3383 | } | |
3384 | ||
3385 | /* Add CMD14 Support */ | |
a39be27b AS |
3386 | brcmf_sdiod_regwb(bus->sdiodev, SDIO_CCCR_BRCM_CARDCAP, |
3387 | (SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT | | |
3388 | SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT), | |
3389 | &err); | |
4a3da990 PH |
3390 | if (err) { |
3391 | brcmf_err("error writing SDIO_CCCR_BRCM_CARDCAP\n"); | |
3392 | return; | |
3393 | } | |
3394 | ||
a39be27b AS |
3395 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3396 | SBSDIO_FORCE_HT, &err); | |
4a3da990 PH |
3397 | if (err) { |
3398 | brcmf_err("error writing SBSDIO_FUNC1_CHIPCLKCSR\n"); | |
3399 | return; | |
3400 | } | |
3401 | ||
3402 | /* set flag */ | |
3403 | bus->sr_enabled = true; | |
3404 | brcmf_dbg(INFO, "SR enabled\n"); | |
3405 | } | |
3406 | ||
3407 | /* enable KSO bit */ | |
82d7f3c1 | 3408 | static int brcmf_sdio_kso_init(struct brcmf_sdio *bus) |
4a3da990 PH |
3409 | { |
3410 | u8 val; | |
3411 | int err = 0; | |
3412 | ||
3413 | brcmf_dbg(TRACE, "Enter\n"); | |
3414 | ||
3415 | /* KSO bit added in SDIO core rev 12 */ | |
cb7cf7be | 3416 | if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) |
4a3da990 PH |
3417 | return 0; |
3418 | ||
a39be27b | 3419 | val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err); |
4a3da990 PH |
3420 | if (err) { |
3421 | brcmf_err("error reading SBSDIO_FUNC1_SLEEPCSR\n"); | |
3422 | return err; | |
3423 | } | |
3424 | ||
3425 | if (!(val & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK)) { | |
3426 | val |= (SBSDIO_FUNC1_SLEEPCSR_KSO_EN << | |
3427 | SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT); | |
a39be27b AS |
3428 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, |
3429 | val, &err); | |
4a3da990 PH |
3430 | if (err) { |
3431 | brcmf_err("error writing SBSDIO_FUNC1_SLEEPCSR\n"); | |
3432 | return err; | |
3433 | } | |
3434 | } | |
3435 | ||
3436 | return 0; | |
3437 | } | |
3438 | ||
3439 | ||
82d7f3c1 | 3440 | static int brcmf_sdio_bus_preinit(struct device *dev) |
cf458287 AS |
3441 | { |
3442 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
3443 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
3444 | struct brcmf_sdio *bus = sdiodev->bus; | |
8da9d2c8 | 3445 | uint pad_size; |
cf458287 | 3446 | u32 value; |
cf458287 AS |
3447 | int err; |
3448 | ||
8da9d2c8 FL |
3449 | /* the commands below use the terms tx and rx from |
3450 | * a device perspective, ie. bus:txglom affects the | |
3451 | * bus transfers from device to host. | |
3452 | */ | |
cb7cf7be | 3453 | if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) { |
cf458287 AS |
3454 | /* for sdio core rev < 12, disable txgloming */ |
3455 | value = 0; | |
3456 | err = brcmf_iovar_data_set(dev, "bus:txglom", &value, | |
3457 | sizeof(u32)); | |
3458 | } else { | |
3459 | /* otherwise, set txglomalign */ | |
3460 | value = 4; | |
3461 | if (sdiodev->pdata) | |
3462 | value = sdiodev->pdata->sd_sgentry_align; | |
3463 | /* SDIO ADMA requires at least 32 bit alignment */ | |
3464 | value = max_t(u32, value, 4); | |
3465 | err = brcmf_iovar_data_set(dev, "bus:txglomalign", &value, | |
3466 | sizeof(u32)); | |
3467 | } | |
8da9d2c8 FL |
3468 | |
3469 | if (err < 0) | |
3470 | goto done; | |
3471 | ||
3472 | bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; | |
3473 | if (sdiodev->sg_support) { | |
3474 | bus->txglom = false; | |
3475 | value = 1; | |
3476 | pad_size = bus->sdiodev->func[2]->cur_blksize << 1; | |
8da9d2c8 FL |
3477 | err = brcmf_iovar_data_set(bus->sdiodev->dev, "bus:rxglom", |
3478 | &value, sizeof(u32)); | |
3479 | if (err < 0) { | |
3480 | /* bus:rxglom is allowed to fail */ | |
3481 | err = 0; | |
3482 | } else { | |
3483 | bus->txglom = true; | |
3484 | bus->tx_hdrlen += SDPCM_HWEXT_LEN; | |
3485 | } | |
3486 | } | |
3487 | brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen); | |
3488 | ||
3489 | done: | |
cf458287 AS |
3490 | return err; |
3491 | } | |
3492 | ||
82d7f3c1 | 3493 | static int brcmf_sdio_bus_init(struct device *dev) |
5b435de0 | 3494 | { |
fa20b911 | 3495 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
0a332e46 | 3496 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
fa20b911 | 3497 | struct brcmf_sdio *bus = sdiodev->bus; |
5b435de0 AS |
3498 | int err, ret = 0; |
3499 | u8 saveclk; | |
3500 | ||
3501 | brcmf_dbg(TRACE, "Enter\n"); | |
3502 | ||
3503 | /* try to download image and nvram to the dongle */ | |
fa20b911 | 3504 | if (bus_if->state == BRCMF_BUS_DOWN) { |
3355650c | 3505 | bus->alp_only = true; |
82d7f3c1 AS |
3506 | err = brcmf_sdio_download_firmware(bus); |
3507 | if (err) | |
3508 | return err; | |
3355650c | 3509 | bus->alp_only = false; |
5b435de0 AS |
3510 | } |
3511 | ||
712ac5b3 | 3512 | if (!bus->sdiodev->bus_if->drvr) |
5b435de0 AS |
3513 | return 0; |
3514 | ||
3515 | /* Start the watchdog timer */ | |
80969836 | 3516 | bus->sdcnt.tickcnt = 0; |
82d7f3c1 | 3517 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 | 3518 | |
38b0b0dd | 3519 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3520 | |
3521 | /* Make sure backplane clock is on, needed to generate F2 interrupt */ | |
82d7f3c1 | 3522 | brcmf_sdio_clkctl(bus, CLK_AVAIL, false); |
5b435de0 AS |
3523 | if (bus->clkstate != CLK_AVAIL) |
3524 | goto exit; | |
3525 | ||
3526 | /* Force clocks on backplane to be sure F2 interrupt propagates */ | |
a39be27b AS |
3527 | saveclk = brcmf_sdiod_regrb(bus->sdiodev, |
3528 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 | 3529 | if (!err) { |
a39be27b AS |
3530 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3531 | (saveclk | SBSDIO_FORCE_HT), &err); | |
5b435de0 AS |
3532 | } |
3533 | if (err) { | |
5e8149f5 | 3534 | brcmf_err("Failed to force clock for F2: err %d\n", err); |
5b435de0 AS |
3535 | goto exit; |
3536 | } | |
3537 | ||
3538 | /* Enable function 2 (frame transfers) */ | |
3539 | w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, | |
58692750 | 3540 | offsetof(struct sdpcmd_regs, tosbmailboxdata)); |
71370eb8 | 3541 | err = sdio_enable_func(bus->sdiodev->func[SDIO_FUNC_2]); |
5b435de0 | 3542 | |
5b435de0 | 3543 | |
71370eb8 | 3544 | brcmf_dbg(INFO, "enable F2: err=%d\n", err); |
5b435de0 AS |
3545 | |
3546 | /* If F2 successfully enabled, set core and enable interrupts */ | |
71370eb8 | 3547 | if (!err) { |
5b435de0 AS |
3548 | /* Set up the interrupt mask and enable interrupts */ |
3549 | bus->hostintmask = HOSTINTMASK; | |
3550 | w_sdreg32(bus, bus->hostintmask, | |
58692750 | 3551 | offsetof(struct sdpcmd_regs, hostintmask)); |
5b435de0 | 3552 | |
a39be27b | 3553 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_WATERMARK, 8, &err); |
c0e89f08 | 3554 | } else { |
5b435de0 | 3555 | /* Disable F2 again */ |
71370eb8 | 3556 | sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]); |
c0e89f08 | 3557 | ret = -ENODEV; |
5b435de0 AS |
3558 | } |
3559 | ||
cb7cf7be | 3560 | if (brcmf_chip_sr_capable(bus->ci)) { |
82d7f3c1 | 3561 | brcmf_sdio_sr_init(bus); |
4a3da990 PH |
3562 | } else { |
3563 | /* Restore previous clock setting */ | |
a39be27b AS |
3564 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3565 | saveclk, &err); | |
4a3da990 | 3566 | } |
5b435de0 | 3567 | |
e2f93cc3 | 3568 | if (ret == 0) { |
a39be27b | 3569 | ret = brcmf_sdiod_intr_register(bus->sdiodev); |
e2f93cc3 | 3570 | if (ret != 0) |
5e8149f5 | 3571 | brcmf_err("intr register failed:%d\n", ret); |
e2f93cc3 FL |
3572 | } |
3573 | ||
5b435de0 | 3574 | /* If we didn't come up, turn off backplane clock */ |
76a4c681 | 3575 | if (ret != 0) |
82d7f3c1 | 3576 | brcmf_sdio_clkctl(bus, CLK_NONE, false); |
5b435de0 AS |
3577 | |
3578 | exit: | |
38b0b0dd | 3579 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3580 | |
3581 | return ret; | |
3582 | } | |
3583 | ||
82d7f3c1 | 3584 | void brcmf_sdio_isr(struct brcmf_sdio *bus) |
5b435de0 | 3585 | { |
5b435de0 AS |
3586 | brcmf_dbg(TRACE, "Enter\n"); |
3587 | ||
3588 | if (!bus) { | |
5e8149f5 | 3589 | brcmf_err("bus is null pointer, exiting\n"); |
5b435de0 AS |
3590 | return; |
3591 | } | |
3592 | ||
bb350711 | 3593 | if (!brcmf_bus_ready(bus->sdiodev->bus_if)) { |
5e8149f5 | 3594 | brcmf_err("bus is down. we have nothing to do\n"); |
5b435de0 AS |
3595 | return; |
3596 | } | |
3597 | /* Count the interrupt call */ | |
80969836 | 3598 | bus->sdcnt.intrcount++; |
4531603a FL |
3599 | if (in_interrupt()) |
3600 | atomic_set(&bus->ipend, 1); | |
3601 | else | |
3602 | if (brcmf_sdio_intr_rstatus(bus)) { | |
5e8149f5 | 3603 | brcmf_err("failed backplane access\n"); |
4531603a | 3604 | } |
5b435de0 | 3605 | |
5b435de0 AS |
3606 | /* Disable additional interrupts (is this needed now)? */ |
3607 | if (!bus->intr) | |
5e8149f5 | 3608 | brcmf_err("isr w/o interrupt configured!\n"); |
5b435de0 | 3609 | |
fccfe930 | 3610 | atomic_inc(&bus->dpc_tskcnt); |
f1e68c2e | 3611 | queue_work(bus->brcmf_wq, &bus->datawork); |
5b435de0 AS |
3612 | } |
3613 | ||
82d7f3c1 | 3614 | static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus) |
5b435de0 | 3615 | { |
8ae74654 | 3616 | #ifdef DEBUG |
cad2b26b | 3617 | struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev); |
8ae74654 | 3618 | #endif /* DEBUG */ |
5b435de0 AS |
3619 | |
3620 | brcmf_dbg(TIMER, "Enter\n"); | |
3621 | ||
5b435de0 | 3622 | /* Poll period: check device if appropriate. */ |
4a3da990 PH |
3623 | if (!bus->sr_enabled && |
3624 | bus->poll && (++bus->polltick >= bus->pollrate)) { | |
5b435de0 AS |
3625 | u32 intstatus = 0; |
3626 | ||
3627 | /* Reset poll tick */ | |
3628 | bus->polltick = 0; | |
3629 | ||
3630 | /* Check device if no interrupts */ | |
80969836 AS |
3631 | if (!bus->intr || |
3632 | (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) { | |
5b435de0 | 3633 | |
fccfe930 | 3634 | if (atomic_read(&bus->dpc_tskcnt) == 0) { |
5b435de0 | 3635 | u8 devpend; |
fccfe930 | 3636 | |
38b0b0dd | 3637 | sdio_claim_host(bus->sdiodev->func[1]); |
a39be27b AS |
3638 | devpend = brcmf_sdiod_regrb(bus->sdiodev, |
3639 | SDIO_CCCR_INTx, | |
3640 | NULL); | |
38b0b0dd | 3641 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3642 | intstatus = |
3643 | devpend & (INTR_STATUS_FUNC1 | | |
3644 | INTR_STATUS_FUNC2); | |
3645 | } | |
3646 | ||
3647 | /* If there is something, make like the ISR and | |
3648 | schedule the DPC */ | |
3649 | if (intstatus) { | |
80969836 | 3650 | bus->sdcnt.pollcnt++; |
1d382273 | 3651 | atomic_set(&bus->ipend, 1); |
5b435de0 | 3652 | |
fccfe930 | 3653 | atomic_inc(&bus->dpc_tskcnt); |
f1e68c2e | 3654 | queue_work(bus->brcmf_wq, &bus->datawork); |
5b435de0 AS |
3655 | } |
3656 | } | |
3657 | ||
3658 | /* Update interrupt tracking */ | |
80969836 | 3659 | bus->sdcnt.lastintrs = bus->sdcnt.intrcount; |
5b435de0 | 3660 | } |
8ae74654 | 3661 | #ifdef DEBUG |
5b435de0 | 3662 | /* Poll for console output periodically */ |
2def5c10 | 3663 | if (bus_if && bus_if->state == BRCMF_BUS_DATA && |
8d169aa0 | 3664 | bus->console_interval != 0) { |
5b435de0 AS |
3665 | bus->console.count += BRCMF_WD_POLL_MS; |
3666 | if (bus->console.count >= bus->console_interval) { | |
3667 | bus->console.count -= bus->console_interval; | |
38b0b0dd | 3668 | sdio_claim_host(bus->sdiodev->func[1]); |
5b435de0 | 3669 | /* Make sure backplane clock is on */ |
82d7f3c1 AS |
3670 | brcmf_sdio_bus_sleep(bus, false, false); |
3671 | if (brcmf_sdio_readconsole(bus) < 0) | |
5b435de0 AS |
3672 | /* stop on error */ |
3673 | bus->console_interval = 0; | |
38b0b0dd | 3674 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3675 | } |
3676 | } | |
8ae74654 | 3677 | #endif /* DEBUG */ |
5b435de0 AS |
3678 | |
3679 | /* On idle timeout clear activity flag and/or turn off clock */ | |
3680 | if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { | |
3681 | if (++bus->idlecount >= bus->idletime) { | |
3682 | bus->idlecount = 0; | |
3683 | if (bus->activity) { | |
3684 | bus->activity = false; | |
82d7f3c1 | 3685 | brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); |
5b435de0 | 3686 | } else { |
4a3da990 | 3687 | brcmf_dbg(SDIO, "idle\n"); |
38b0b0dd | 3688 | sdio_claim_host(bus->sdiodev->func[1]); |
82d7f3c1 | 3689 | brcmf_sdio_bus_sleep(bus, true, false); |
38b0b0dd | 3690 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3691 | } |
3692 | } | |
3693 | } | |
3694 | ||
1d382273 | 3695 | return (atomic_read(&bus->ipend) > 0); |
5b435de0 AS |
3696 | } |
3697 | ||
f1e68c2e FL |
3698 | static void brcmf_sdio_dataworker(struct work_struct *work) |
3699 | { | |
3700 | struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio, | |
3701 | datawork); | |
f1e68c2e | 3702 | |
fccfe930 | 3703 | while (atomic_read(&bus->dpc_tskcnt)) { |
71abdc00 | 3704 | atomic_set(&bus->dpc_tskcnt, 0); |
82d7f3c1 | 3705 | brcmf_sdio_dpc(bus); |
f1e68c2e | 3706 | } |
f1e68c2e FL |
3707 | } |
3708 | ||
65d80d0b AS |
3709 | static void |
3710 | brcmf_sdio_drivestrengthinit(struct brcmf_sdio_dev *sdiodev, | |
cb7cf7be | 3711 | struct brcmf_chip *ci, u32 drivestrength) |
65d80d0b AS |
3712 | { |
3713 | const struct sdiod_drive_str *str_tab = NULL; | |
3714 | u32 str_mask; | |
3715 | u32 str_shift; | |
cb7cf7be | 3716 | u32 base; |
65d80d0b AS |
3717 | u32 i; |
3718 | u32 drivestrength_sel = 0; | |
3719 | u32 cc_data_temp; | |
3720 | u32 addr; | |
3721 | ||
cb7cf7be | 3722 | if (!(ci->cc_caps & CC_CAP_PMU)) |
65d80d0b AS |
3723 | return; |
3724 | ||
3725 | switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) { | |
3726 | case SDIOD_DRVSTR_KEY(BCM4330_CHIP_ID, 12): | |
3727 | str_tab = sdiod_drvstr_tab1_1v8; | |
3728 | str_mask = 0x00003800; | |
3729 | str_shift = 11; | |
3730 | break; | |
3731 | case SDIOD_DRVSTR_KEY(BCM4334_CHIP_ID, 17): | |
3732 | str_tab = sdiod_drvstr_tab6_1v8; | |
3733 | str_mask = 0x00001800; | |
3734 | str_shift = 11; | |
3735 | break; | |
3736 | case SDIOD_DRVSTR_KEY(BCM43143_CHIP_ID, 17): | |
3737 | /* note: 43143 does not support tristate */ | |
3738 | i = ARRAY_SIZE(sdiod_drvstr_tab2_3v3) - 1; | |
3739 | if (drivestrength >= sdiod_drvstr_tab2_3v3[i].strength) { | |
3740 | str_tab = sdiod_drvstr_tab2_3v3; | |
3741 | str_mask = 0x00000007; | |
3742 | str_shift = 0; | |
3743 | } else | |
3744 | brcmf_err("Invalid SDIO Drive strength for chip %s, strength=%d\n", | |
cb7cf7be | 3745 | ci->name, drivestrength); |
65d80d0b AS |
3746 | break; |
3747 | case SDIOD_DRVSTR_KEY(BCM43362_CHIP_ID, 13): | |
3748 | str_tab = sdiod_drive_strength_tab5_1v8; | |
3749 | str_mask = 0x00003800; | |
3750 | str_shift = 11; | |
3751 | break; | |
3752 | default: | |
3753 | brcmf_err("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n", | |
cb7cf7be | 3754 | ci->name, ci->chiprev, ci->pmurev); |
65d80d0b AS |
3755 | break; |
3756 | } | |
3757 | ||
3758 | if (str_tab != NULL) { | |
3759 | for (i = 0; str_tab[i].strength != 0; i++) { | |
3760 | if (drivestrength >= str_tab[i].strength) { | |
3761 | drivestrength_sel = str_tab[i].sel; | |
3762 | break; | |
3763 | } | |
3764 | } | |
cb7cf7be | 3765 | base = brcmf_chip_get_chipcommon(ci)->base; |
65d80d0b AS |
3766 | addr = CORE_CC_REG(base, chipcontrol_addr); |
3767 | brcmf_sdiod_regwl(sdiodev, addr, 1, NULL); | |
3768 | cc_data_temp = brcmf_sdiod_regrl(sdiodev, addr, NULL); | |
3769 | cc_data_temp &= ~str_mask; | |
3770 | drivestrength_sel <<= str_shift; | |
3771 | cc_data_temp |= drivestrength_sel; | |
3772 | brcmf_sdiod_regwl(sdiodev, addr, cc_data_temp, NULL); | |
3773 | ||
3774 | brcmf_dbg(INFO, "SDIO: %d mA (req=%d mA) drive strength selected, set to 0x%08x\n", | |
3775 | str_tab[i].strength, drivestrength, cc_data_temp); | |
3776 | } | |
3777 | } | |
3778 | ||
cb7cf7be | 3779 | static int brcmf_sdio_buscoreprep(void *ctx) |
65d80d0b | 3780 | { |
cb7cf7be | 3781 | struct brcmf_sdio_dev *sdiodev = ctx; |
65d80d0b AS |
3782 | int err = 0; |
3783 | u8 clkval, clkset; | |
3784 | ||
3785 | /* Try forcing SDIO core to do ALPAvail request only */ | |
3786 | clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ; | |
3787 | brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err); | |
3788 | if (err) { | |
3789 | brcmf_err("error writing for HT off\n"); | |
3790 | return err; | |
3791 | } | |
3792 | ||
3793 | /* If register supported, wait for ALPAvail and then force ALP */ | |
3794 | /* This may take up to 15 milliseconds */ | |
3795 | clkval = brcmf_sdiod_regrb(sdiodev, | |
3796 | SBSDIO_FUNC1_CHIPCLKCSR, NULL); | |
3797 | ||
3798 | if ((clkval & ~SBSDIO_AVBITS) != clkset) { | |
3799 | brcmf_err("ChipClkCSR access: wrote 0x%02x read 0x%02x\n", | |
3800 | clkset, clkval); | |
3801 | return -EACCES; | |
3802 | } | |
3803 | ||
3804 | SPINWAIT(((clkval = brcmf_sdiod_regrb(sdiodev, | |
3805 | SBSDIO_FUNC1_CHIPCLKCSR, NULL)), | |
3806 | !SBSDIO_ALPAV(clkval)), | |
3807 | PMU_MAX_TRANSITION_DLY); | |
3808 | if (!SBSDIO_ALPAV(clkval)) { | |
3809 | brcmf_err("timeout on ALPAV wait, clkval 0x%02x\n", | |
3810 | clkval); | |
3811 | return -EBUSY; | |
3812 | } | |
3813 | ||
3814 | clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_FORCE_ALP; | |
3815 | brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err); | |
3816 | udelay(65); | |
3817 | ||
3818 | /* Also, disable the extra SDIO pull-ups */ | |
3819 | brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SDIOPULLUP, 0, NULL); | |
3820 | ||
3821 | return 0; | |
3822 | } | |
3823 | ||
cb7cf7be AS |
3824 | static void brcmf_sdio_buscore_exitdl(void *ctx, struct brcmf_chip *chip, |
3825 | u32 rstvec) | |
3826 | { | |
3827 | struct brcmf_sdio_dev *sdiodev = ctx; | |
3828 | struct brcmf_core *core; | |
3829 | u32 reg_addr; | |
3830 | ||
3831 | /* clear all interrupts */ | |
3832 | core = brcmf_chip_get_core(chip, BCMA_CORE_SDIO_DEV); | |
3833 | reg_addr = core->base + offsetof(struct sdpcmd_regs, intstatus); | |
3834 | brcmf_sdiod_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL); | |
3835 | ||
3836 | if (rstvec) | |
3837 | /* Write reset vector to address 0 */ | |
3838 | brcmf_sdiod_ramrw(sdiodev, true, 0, (void *)&rstvec, | |
3839 | sizeof(rstvec)); | |
3840 | } | |
3841 | ||
3842 | static u32 brcmf_sdio_buscore_read32(void *ctx, u32 addr) | |
3843 | { | |
3844 | struct brcmf_sdio_dev *sdiodev = ctx; | |
3845 | u32 val, rev; | |
3846 | ||
3847 | val = brcmf_sdiod_regrl(sdiodev, addr, NULL); | |
3848 | if (sdiodev->func[0]->device == SDIO_DEVICE_ID_BROADCOM_4335_4339 && | |
3849 | addr == CORE_CC_REG(SI_ENUM_BASE, chipid)) { | |
3850 | rev = (val & CID_REV_MASK) >> CID_REV_SHIFT; | |
3851 | if (rev >= 2) { | |
3852 | val &= ~CID_ID_MASK; | |
3853 | val |= BCM4339_CHIP_ID; | |
3854 | } | |
3855 | } | |
3856 | return val; | |
3857 | } | |
3858 | ||
3859 | static void brcmf_sdio_buscore_write32(void *ctx, u32 addr, u32 val) | |
3860 | { | |
3861 | struct brcmf_sdio_dev *sdiodev = ctx; | |
3862 | ||
3863 | brcmf_sdiod_regwl(sdiodev, addr, val, NULL); | |
3864 | } | |
3865 | ||
3866 | static const struct brcmf_buscore_ops brcmf_sdio_buscore_ops = { | |
3867 | .prepare = brcmf_sdio_buscoreprep, | |
3868 | .exit_dl = brcmf_sdio_buscore_exitdl, | |
3869 | .read32 = brcmf_sdio_buscore_read32, | |
3870 | .write32 = brcmf_sdio_buscore_write32, | |
3871 | }; | |
3872 | ||
5b435de0 | 3873 | static bool |
82d7f3c1 | 3874 | brcmf_sdio_probe_attach(struct brcmf_sdio *bus) |
5b435de0 AS |
3875 | { |
3876 | u8 clkctl = 0; | |
3877 | int err = 0; | |
3878 | int reg_addr; | |
3879 | u32 reg_val; | |
668761ac | 3880 | u32 drivestrength; |
5b435de0 | 3881 | |
38b0b0dd FL |
3882 | sdio_claim_host(bus->sdiodev->func[1]); |
3883 | ||
18aad4f8 | 3884 | pr_debug("F1 signature read @0x18000000=0x%4x\n", |
a39be27b | 3885 | brcmf_sdiod_regrl(bus->sdiodev, SI_ENUM_BASE, NULL)); |
5b435de0 AS |
3886 | |
3887 | /* | |
cb7cf7be | 3888 | * Force PLL off until brcmf_chip_attach() |
5b435de0 AS |
3889 | * programs PLL control regs |
3890 | */ | |
3891 | ||
a39be27b AS |
3892 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, |
3893 | BRCMF_INIT_CLKCTL1, &err); | |
5b435de0 | 3894 | if (!err) |
a39be27b AS |
3895 | clkctl = brcmf_sdiod_regrb(bus->sdiodev, |
3896 | SBSDIO_FUNC1_CHIPCLKCSR, &err); | |
5b435de0 AS |
3897 | |
3898 | if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) { | |
5e8149f5 | 3899 | brcmf_err("ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n", |
5b435de0 AS |
3900 | err, BRCMF_INIT_CLKCTL1, clkctl); |
3901 | goto fail; | |
3902 | } | |
3903 | ||
bb350711 AS |
3904 | /* SDIO register access works so moving |
3905 | * state from UNKNOWN to DOWN. | |
3906 | */ | |
3907 | brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_DOWN); | |
3908 | ||
cb7cf7be AS |
3909 | bus->ci = brcmf_chip_attach(bus->sdiodev, &brcmf_sdio_buscore_ops); |
3910 | if (IS_ERR(bus->ci)) { | |
3911 | brcmf_err("brcmf_chip_attach failed!\n"); | |
3912 | bus->ci = NULL; | |
5b435de0 AS |
3913 | goto fail; |
3914 | } | |
3915 | ||
82d7f3c1 | 3916 | if (brcmf_sdio_kso_init(bus)) { |
4a3da990 PH |
3917 | brcmf_err("error enabling KSO\n"); |
3918 | goto fail; | |
3919 | } | |
3920 | ||
668761ac HM |
3921 | if ((bus->sdiodev->pdata) && (bus->sdiodev->pdata->drive_strength)) |
3922 | drivestrength = bus->sdiodev->pdata->drive_strength; | |
3923 | else | |
3924 | drivestrength = DEFAULT_SDIO_DRIVE_STRENGTH; | |
65d80d0b | 3925 | brcmf_sdio_drivestrengthinit(bus->sdiodev, bus->ci, drivestrength); |
5b435de0 | 3926 | |
454d2a88 | 3927 | /* Get info on the SOCRAM cores... */ |
5b435de0 AS |
3928 | bus->ramsize = bus->ci->ramsize; |
3929 | if (!(bus->ramsize)) { | |
5e8149f5 | 3930 | brcmf_err("failed to find SOCRAM memory!\n"); |
5b435de0 AS |
3931 | goto fail; |
3932 | } | |
3933 | ||
1e9ab4dd | 3934 | /* Set card control so an SDIO card reset does a WLAN backplane reset */ |
a39be27b AS |
3935 | reg_val = brcmf_sdiod_regrb(bus->sdiodev, |
3936 | SDIO_CCCR_BRCM_CARDCTRL, &err); | |
1e9ab4dd PH |
3937 | if (err) |
3938 | goto fail; | |
3939 | ||
3940 | reg_val |= SDIO_CCCR_BRCM_CARDCTRL_WLANRESET; | |
3941 | ||
a39be27b AS |
3942 | brcmf_sdiod_regwb(bus->sdiodev, |
3943 | SDIO_CCCR_BRCM_CARDCTRL, reg_val, &err); | |
1e9ab4dd PH |
3944 | if (err) |
3945 | goto fail; | |
3946 | ||
3947 | /* set PMUControl so a backplane reset does PMU state reload */ | |
cb7cf7be | 3948 | reg_addr = CORE_CC_REG(brcmf_chip_get_chipcommon(bus->ci)->base, |
1e9ab4dd | 3949 | pmucontrol); |
cb7cf7be | 3950 | reg_val = brcmf_sdiod_regrl(bus->sdiodev, reg_addr, &err); |
1e9ab4dd PH |
3951 | if (err) |
3952 | goto fail; | |
3953 | ||
3954 | reg_val |= (BCMA_CC_PMU_CTL_RES_RELOAD << BCMA_CC_PMU_CTL_RES_SHIFT); | |
3955 | ||
cb7cf7be | 3956 | brcmf_sdiod_regwl(bus->sdiodev, reg_addr, reg_val, &err); |
1e9ab4dd PH |
3957 | if (err) |
3958 | goto fail; | |
3959 | ||
38b0b0dd FL |
3960 | sdio_release_host(bus->sdiodev->func[1]); |
3961 | ||
5b435de0 AS |
3962 | brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); |
3963 | ||
9b2d2f2a AS |
3964 | /* allocate header buffer */ |
3965 | bus->hdrbuf = kzalloc(MAX_HDR_READ + bus->head_align, GFP_KERNEL); | |
3966 | if (!bus->hdrbuf) | |
3967 | return false; | |
5b435de0 AS |
3968 | /* Locate an appropriately-aligned portion of hdrbuf */ |
3969 | bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], | |
9b2d2f2a | 3970 | bus->head_align); |
5b435de0 AS |
3971 | |
3972 | /* Set the poll and/or interrupt flags */ | |
3973 | bus->intr = true; | |
3974 | bus->poll = false; | |
3975 | if (bus->poll) | |
3976 | bus->pollrate = 1; | |
3977 | ||
3978 | return true; | |
3979 | ||
3980 | fail: | |
38b0b0dd | 3981 | sdio_release_host(bus->sdiodev->func[1]); |
5b435de0 AS |
3982 | return false; |
3983 | } | |
3984 | ||
5b435de0 | 3985 | static int |
82d7f3c1 | 3986 | brcmf_sdio_watchdog_thread(void *data) |
5b435de0 | 3987 | { |
e92eedf4 | 3988 | struct brcmf_sdio *bus = (struct brcmf_sdio *)data; |
5b435de0 AS |
3989 | |
3990 | allow_signal(SIGTERM); | |
3991 | /* Run until signal received */ | |
3992 | while (1) { | |
3993 | if (kthread_should_stop()) | |
3994 | break; | |
3995 | if (!wait_for_completion_interruptible(&bus->watchdog_wait)) { | |
82d7f3c1 | 3996 | brcmf_sdio_bus_watchdog(bus); |
5b435de0 | 3997 | /* Count the tick for reference */ |
80969836 | 3998 | bus->sdcnt.tickcnt++; |
58e9df46 | 3999 | reinit_completion(&bus->watchdog_wait); |
5b435de0 AS |
4000 | } else |
4001 | break; | |
4002 | } | |
4003 | return 0; | |
4004 | } | |
4005 | ||
4006 | static void | |
82d7f3c1 | 4007 | brcmf_sdio_watchdog(unsigned long data) |
5b435de0 | 4008 | { |
e92eedf4 | 4009 | struct brcmf_sdio *bus = (struct brcmf_sdio *)data; |
5b435de0 AS |
4010 | |
4011 | if (bus->watchdog_tsk) { | |
4012 | complete(&bus->watchdog_wait); | |
4013 | /* Reschedule the watchdog */ | |
4014 | if (bus->wd_timer_valid) | |
4015 | mod_timer(&bus->timer, | |
4016 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000); | |
4017 | } | |
4018 | } | |
4019 | ||
d9cb2596 | 4020 | static struct brcmf_bus_ops brcmf_sdio_bus_ops = { |
82d7f3c1 AS |
4021 | .stop = brcmf_sdio_bus_stop, |
4022 | .preinit = brcmf_sdio_bus_preinit, | |
82d7f3c1 AS |
4023 | .txdata = brcmf_sdio_bus_txdata, |
4024 | .txctl = brcmf_sdio_bus_txctl, | |
4025 | .rxctl = brcmf_sdio_bus_rxctl, | |
4026 | .gettxq = brcmf_sdio_bus_gettxq, | |
d9cb2596 AS |
4027 | }; |
4028 | ||
82d7f3c1 | 4029 | struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) |
5b435de0 AS |
4030 | { |
4031 | int ret; | |
e92eedf4 | 4032 | struct brcmf_sdio *bus; |
5b435de0 | 4033 | |
5b435de0 AS |
4034 | brcmf_dbg(TRACE, "Enter\n"); |
4035 | ||
5b435de0 | 4036 | /* Allocate private bus interface state */ |
e92eedf4 | 4037 | bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC); |
5b435de0 AS |
4038 | if (!bus) |
4039 | goto fail; | |
4040 | ||
4041 | bus->sdiodev = sdiodev; | |
4042 | sdiodev->bus = bus; | |
b83db862 | 4043 | skb_queue_head_init(&bus->glom); |
5b435de0 AS |
4044 | bus->txbound = BRCMF_TXBOUND; |
4045 | bus->rxbound = BRCMF_RXBOUND; | |
4046 | bus->txminmax = BRCMF_TXMINMAX; | |
6bc52319 | 4047 | bus->tx_seq = SDPCM_SEQ_WRAP - 1; |
5b435de0 | 4048 | |
e217d1c8 AS |
4049 | /* platform specific configuration: |
4050 | * alignments must be at least 4 bytes for ADMA | |
4051 | */ | |
4052 | bus->head_align = ALIGNMENT; | |
4053 | bus->sgentry_align = ALIGNMENT; | |
4054 | if (sdiodev->pdata) { | |
4055 | if (sdiodev->pdata->sd_head_align > ALIGNMENT) | |
4056 | bus->head_align = sdiodev->pdata->sd_head_align; | |
4057 | if (sdiodev->pdata->sd_sgentry_align > ALIGNMENT) | |
4058 | bus->sgentry_align = sdiodev->pdata->sd_sgentry_align; | |
4059 | } | |
4060 | ||
37ac5780 HM |
4061 | INIT_WORK(&bus->datawork, brcmf_sdio_dataworker); |
4062 | bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq"); | |
4063 | if (bus->brcmf_wq == NULL) { | |
5e8149f5 | 4064 | brcmf_err("insufficient memory to create txworkqueue\n"); |
37ac5780 HM |
4065 | goto fail; |
4066 | } | |
4067 | ||
5b435de0 | 4068 | /* attempt to attach to the dongle */ |
82d7f3c1 AS |
4069 | if (!(brcmf_sdio_probe_attach(bus))) { |
4070 | brcmf_err("brcmf_sdio_probe_attach failed\n"); | |
5b435de0 AS |
4071 | goto fail; |
4072 | } | |
4073 | ||
dd43a01c | 4074 | spin_lock_init(&bus->rxctl_lock); |
fed7ec44 HM |
4075 | spin_lock_init(&bus->txq_lock); |
4076 | sema_init(&bus->tx_seq_lock, 1); | |
5b435de0 AS |
4077 | init_waitqueue_head(&bus->ctrl_wait); |
4078 | init_waitqueue_head(&bus->dcmd_resp_wait); | |
4079 | ||
4080 | /* Set up the watchdog timer */ | |
4081 | init_timer(&bus->timer); | |
4082 | bus->timer.data = (unsigned long)bus; | |
82d7f3c1 | 4083 | bus->timer.function = brcmf_sdio_watchdog; |
5b435de0 | 4084 | |
5b435de0 AS |
4085 | /* Initialize watchdog thread */ |
4086 | init_completion(&bus->watchdog_wait); | |
82d7f3c1 | 4087 | bus->watchdog_tsk = kthread_run(brcmf_sdio_watchdog_thread, |
5b435de0 AS |
4088 | bus, "brcmf_watchdog"); |
4089 | if (IS_ERR(bus->watchdog_tsk)) { | |
02f77195 | 4090 | pr_warn("brcmf_watchdog thread failed to start\n"); |
5b435de0 AS |
4091 | bus->watchdog_tsk = NULL; |
4092 | } | |
4093 | /* Initialize DPC thread */ | |
fccfe930 | 4094 | atomic_set(&bus->dpc_tskcnt, 0); |
5b435de0 | 4095 | |
a9ffda88 | 4096 | /* Assign bus interface call back */ |
d9cb2596 AS |
4097 | bus->sdiodev->bus_if->dev = bus->sdiodev->dev; |
4098 | bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops; | |
75d907d3 AS |
4099 | bus->sdiodev->bus_if->chip = bus->ci->chip; |
4100 | bus->sdiodev->bus_if->chiprev = bus->ci->chiprev; | |
d9cb2596 | 4101 | |
706478cb FL |
4102 | /* default sdio bus header length for tx packet */ |
4103 | bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; | |
4104 | ||
4105 | /* Attach to the common layer, reserve hdr space */ | |
8dee77ba | 4106 | ret = brcmf_attach(bus->sdiodev->dev); |
712ac5b3 | 4107 | if (ret != 0) { |
5e8149f5 | 4108 | brcmf_err("brcmf_attach failed\n"); |
5b435de0 AS |
4109 | goto fail; |
4110 | } | |
4111 | ||
4112 | /* Allocate buffers */ | |
fad13228 AS |
4113 | if (bus->sdiodev->bus_if->maxctl) { |
4114 | bus->rxblen = | |
4115 | roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN), | |
4116 | ALIGNMENT) + bus->head_align; | |
4117 | bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); | |
4118 | if (!(bus->rxbuf)) { | |
4119 | brcmf_err("rxbuf allocation failed\n"); | |
4120 | goto fail; | |
4121 | } | |
5b435de0 AS |
4122 | } |
4123 | ||
fad13228 AS |
4124 | sdio_claim_host(bus->sdiodev->func[1]); |
4125 | ||
4126 | /* Disable F2 to clear any intermediate frame state on the dongle */ | |
4127 | sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]); | |
4128 | ||
fad13228 AS |
4129 | bus->rxflow = false; |
4130 | ||
4131 | /* Done with backplane-dependent accesses, can drop clock... */ | |
4132 | brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); | |
4133 | ||
4134 | sdio_release_host(bus->sdiodev->func[1]); | |
4135 | ||
4136 | /* ...and initialize clock/power states */ | |
4137 | bus->clkstate = CLK_SDONLY; | |
4138 | bus->idletime = BRCMF_IDLE_INTERVAL; | |
4139 | bus->idleclock = BRCMF_IDLE_ACTIVE; | |
4140 | ||
4141 | /* Query the F2 block size, set roundup accordingly */ | |
4142 | bus->blocksize = bus->sdiodev->func[2]->cur_blksize; | |
4143 | bus->roundup = min(max_roundup, bus->blocksize); | |
4144 | ||
4145 | /* SR state */ | |
4146 | bus->sleeping = false; | |
4147 | bus->sr_enabled = false; | |
5b435de0 | 4148 | |
80969836 | 4149 | brcmf_sdio_debugfs_create(bus); |
5b435de0 AS |
4150 | brcmf_dbg(INFO, "completed!!\n"); |
4151 | ||
f33d7a91 AS |
4152 | ret = brcmf_sdio_bus_init(sdiodev->dev); |
4153 | if (ret) | |
4154 | goto fail; | |
4155 | ||
5b435de0 | 4156 | /* if firmware path present try to download and bring up bus */ |
ed683c98 | 4157 | ret = brcmf_bus_start(bus->sdiodev->dev); |
5b435de0 | 4158 | if (ret != 0) { |
5e8149f5 | 4159 | brcmf_err("dongle is not responding\n"); |
1799ddf1 | 4160 | goto fail; |
5b435de0 | 4161 | } |
15d45b6f | 4162 | |
5b435de0 AS |
4163 | return bus; |
4164 | ||
4165 | fail: | |
9fbe2a6d | 4166 | brcmf_sdio_remove(bus); |
5b435de0 AS |
4167 | return NULL; |
4168 | } | |
4169 | ||
9fbe2a6d AS |
4170 | /* Detach and free everything */ |
4171 | void brcmf_sdio_remove(struct brcmf_sdio *bus) | |
5b435de0 | 4172 | { |
5b435de0 AS |
4173 | brcmf_dbg(TRACE, "Enter\n"); |
4174 | ||
9fbe2a6d AS |
4175 | if (bus) { |
4176 | /* De-register interrupt handler */ | |
4177 | brcmf_sdiod_intr_unregister(bus->sdiodev); | |
4178 | ||
9fbe2a6d AS |
4179 | if (bus->sdiodev->bus_if->drvr) { |
4180 | brcmf_detach(bus->sdiodev->dev); | |
bfad4a04 AS |
4181 | } |
4182 | ||
e0c180ec HM |
4183 | cancel_work_sync(&bus->datawork); |
4184 | if (bus->brcmf_wq) | |
4185 | destroy_workqueue(bus->brcmf_wq); | |
4186 | ||
bfad4a04 | 4187 | if (bus->ci) { |
bb350711 AS |
4188 | if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) { |
4189 | sdio_claim_host(bus->sdiodev->func[1]); | |
4190 | brcmf_sdio_clkctl(bus, CLK_AVAIL, false); | |
4191 | /* Leave the device in state where it is | |
4192 | * 'quiet'. This is done by putting it in | |
4193 | * download_state which essentially resets | |
4194 | * all necessary cores. | |
4195 | */ | |
4196 | msleep(20); | |
cb7cf7be | 4197 | brcmf_chip_enter_download(bus->ci); |
bb350711 AS |
4198 | brcmf_sdio_clkctl(bus, CLK_NONE, false); |
4199 | sdio_release_host(bus->sdiodev->func[1]); | |
4200 | } | |
cb7cf7be | 4201 | brcmf_chip_detach(bus->ci); |
9fbe2a6d AS |
4202 | } |
4203 | ||
bfad4a04 | 4204 | kfree(bus->rxbuf); |
9fbe2a6d AS |
4205 | kfree(bus->hdrbuf); |
4206 | kfree(bus); | |
4207 | } | |
5b435de0 AS |
4208 | |
4209 | brcmf_dbg(TRACE, "Disconnected\n"); | |
4210 | } | |
4211 | ||
82d7f3c1 | 4212 | void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick) |
5b435de0 | 4213 | { |
5b435de0 | 4214 | /* Totally stop the timer */ |
23677ce3 | 4215 | if (!wdtick && bus->wd_timer_valid) { |
5b435de0 AS |
4216 | del_timer_sync(&bus->timer); |
4217 | bus->wd_timer_valid = false; | |
4218 | bus->save_ms = wdtick; | |
4219 | return; | |
4220 | } | |
4221 | ||
ece960ea | 4222 | /* don't start the wd until fw is loaded */ |
d6ae2c51 | 4223 | if (bus->sdiodev->bus_if->state != BRCMF_BUS_DATA) |
ece960ea FL |
4224 | return; |
4225 | ||
5b435de0 AS |
4226 | if (wdtick) { |
4227 | if (bus->save_ms != BRCMF_WD_POLL_MS) { | |
23677ce3 | 4228 | if (bus->wd_timer_valid) |
5b435de0 AS |
4229 | /* Stop timer and restart at new value */ |
4230 | del_timer_sync(&bus->timer); | |
4231 | ||
4232 | /* Create timer again when watchdog period is | |
4233 | dynamically changed or in the first instance | |
4234 | */ | |
4235 | bus->timer.expires = | |
4236 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000; | |
4237 | add_timer(&bus->timer); | |
4238 | ||
4239 | } else { | |
4240 | /* Re arm the timer, at last watchdog period */ | |
4241 | mod_timer(&bus->timer, | |
4242 | jiffies + BRCMF_WD_POLL_MS * HZ / 1000); | |
4243 | } | |
4244 | ||
4245 | bus->wd_timer_valid = true; | |
4246 | bus->save_ms = wdtick; | |
4247 | } | |
4248 | } |