1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: SDIO specific handling
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include <linux/firmware.h>
9
10 #include "decl.h"
11 #include "ioctl.h"
12 #include "util.h"
13 #include "fw.h"
14 #include "main.h"
15 #include "wmm.h"
16 #include "11n.h"
17 #include "sdio.h"
18
19
20 #define SDIO_VERSION "1.0"
21
22 static void mwifiex_sdio_work(struct work_struct *work);
23
24 static struct mwifiex_if_ops sdio_ops;
25
26 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd87xx = {
27 .start_rd_port = 1,
28 .start_wr_port = 1,
29 .base_0_reg = 0x0040,
30 .base_1_reg = 0x0041,
31 .poll_reg = 0x30,
32 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK,
33 .host_int_rsr_reg = 0x1,
34 .host_int_mask_reg = 0x02,
35 .host_int_status_reg = 0x03,
36 .status_reg_0 = 0x60,
37 .status_reg_1 = 0x61,
38 .sdio_int_mask = 0x3f,
39 .data_port_mask = 0x0000fffe,
40 .io_port_0_reg = 0x78,
41 .io_port_1_reg = 0x79,
42 .io_port_2_reg = 0x7A,
43 .max_mp_regs = 64,
44 .rd_bitmap_l = 0x04,
45 .rd_bitmap_u = 0x05,
46 .wr_bitmap_l = 0x06,
47 .wr_bitmap_u = 0x07,
48 .rd_len_p0_l = 0x08,
49 .rd_len_p0_u = 0x09,
50 .card_misc_cfg_reg = 0x6c,
51 .func1_dump_reg_start = 0x0,
52 .func1_dump_reg_end = 0x9,
53 .func1_scratch_reg = 0x60,
54 .func1_spec_reg_num = 5,
55 .func1_spec_reg_table = {0x28, 0x30, 0x34, 0x38, 0x3c},
56 };
57
58 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8897 = {
59 .start_rd_port = 0,
60 .start_wr_port = 0,
61 .base_0_reg = 0x60,
62 .base_1_reg = 0x61,
63 .poll_reg = 0x50,
64 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
65 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
66 .host_int_rsr_reg = 0x1,
67 .host_int_status_reg = 0x03,
68 .host_int_mask_reg = 0x02,
69 .status_reg_0 = 0xc0,
70 .status_reg_1 = 0xc1,
71 .sdio_int_mask = 0xff,
72 .data_port_mask = 0xffffffff,
73 .io_port_0_reg = 0xD8,
74 .io_port_1_reg = 0xD9,
75 .io_port_2_reg = 0xDA,
76 .max_mp_regs = 184,
77 .rd_bitmap_l = 0x04,
78 .rd_bitmap_u = 0x05,
79 .rd_bitmap_1l = 0x06,
80 .rd_bitmap_1u = 0x07,
81 .wr_bitmap_l = 0x08,
82 .wr_bitmap_u = 0x09,
83 .wr_bitmap_1l = 0x0a,
84 .wr_bitmap_1u = 0x0b,
85 .rd_len_p0_l = 0x0c,
86 .rd_len_p0_u = 0x0d,
87 .card_misc_cfg_reg = 0xcc,
88 .card_cfg_2_1_reg = 0xcd,
89 .cmd_rd_len_0 = 0xb4,
90 .cmd_rd_len_1 = 0xb5,
91 .cmd_rd_len_2 = 0xb6,
92 .cmd_rd_len_3 = 0xb7,
93 .cmd_cfg_0 = 0xb8,
94 .cmd_cfg_1 = 0xb9,
95 .cmd_cfg_2 = 0xba,
96 .cmd_cfg_3 = 0xbb,
97 .fw_dump_host_ready = 0xee,
98 .fw_dump_ctrl = 0xe2,
99 .fw_dump_start = 0xe3,
100 .fw_dump_end = 0xea,
101 .func1_dump_reg_start = 0x0,
102 .func1_dump_reg_end = 0xb,
103 .func1_scratch_reg = 0xc0,
104 .func1_spec_reg_num = 8,
105 .func1_spec_reg_table = {0x4C, 0x50, 0x54, 0x55, 0x58,
106 0x59, 0x5c, 0x5d},
107 };
108
109 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8977 = {
110 .start_rd_port = 0,
111 .start_wr_port = 0,
112 .base_0_reg = 0xF8,
113 .base_1_reg = 0xF9,
114 .poll_reg = 0x5C,
115 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
116 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
117 .host_int_rsr_reg = 0x4,
118 .host_int_status_reg = 0x0C,
119 .host_int_mask_reg = 0x08,
120 .status_reg_0 = 0xE8,
121 .status_reg_1 = 0xE9,
122 .sdio_int_mask = 0xff,
123 .data_port_mask = 0xffffffff,
124 .io_port_0_reg = 0xE4,
125 .io_port_1_reg = 0xE5,
126 .io_port_2_reg = 0xE6,
127 .max_mp_regs = 196,
128 .rd_bitmap_l = 0x10,
129 .rd_bitmap_u = 0x11,
130 .rd_bitmap_1l = 0x12,
131 .rd_bitmap_1u = 0x13,
132 .wr_bitmap_l = 0x14,
133 .wr_bitmap_u = 0x15,
134 .wr_bitmap_1l = 0x16,
135 .wr_bitmap_1u = 0x17,
136 .rd_len_p0_l = 0x18,
137 .rd_len_p0_u = 0x19,
138 .card_misc_cfg_reg = 0xd8,
139 .card_cfg_2_1_reg = 0xd9,
140 .cmd_rd_len_0 = 0xc0,
141 .cmd_rd_len_1 = 0xc1,
142 .cmd_rd_len_2 = 0xc2,
143 .cmd_rd_len_3 = 0xc3,
144 .cmd_cfg_0 = 0xc4,
145 .cmd_cfg_1 = 0xc5,
146 .cmd_cfg_2 = 0xc6,
147 .cmd_cfg_3 = 0xc7,
148 .fw_dump_host_ready = 0xcc,
149 .fw_dump_ctrl = 0xf0,
150 .fw_dump_start = 0xf1,
151 .fw_dump_end = 0xf8,
152 .func1_dump_reg_start = 0x10,
153 .func1_dump_reg_end = 0x17,
154 .func1_scratch_reg = 0xe8,
155 .func1_spec_reg_num = 13,
156 .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D,
157 0x60, 0x61, 0x62, 0x64,
158 0x65, 0x66, 0x68, 0x69,
159 0x6a},
160 };
161
162 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8997 = {
163 .start_rd_port = 0,
164 .start_wr_port = 0,
165 .base_0_reg = 0xF8,
166 .base_1_reg = 0xF9,
167 .poll_reg = 0x5C,
168 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
169 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
170 .host_int_rsr_reg = 0x4,
171 .host_int_status_reg = 0x0C,
172 .host_int_mask_reg = 0x08,
173 .host_strap_reg = 0xF4,
174 .host_strap_mask = 0x01,
175 .host_strap_value = 0x00,
176 .status_reg_0 = 0xE8,
177 .status_reg_1 = 0xE9,
178 .sdio_int_mask = 0xff,
179 .data_port_mask = 0xffffffff,
180 .io_port_0_reg = 0xE4,
181 .io_port_1_reg = 0xE5,
182 .io_port_2_reg = 0xE6,
183 .max_mp_regs = 196,
184 .rd_bitmap_l = 0x10,
185 .rd_bitmap_u = 0x11,
186 .rd_bitmap_1l = 0x12,
187 .rd_bitmap_1u = 0x13,
188 .wr_bitmap_l = 0x14,
189 .wr_bitmap_u = 0x15,
190 .wr_bitmap_1l = 0x16,
191 .wr_bitmap_1u = 0x17,
192 .rd_len_p0_l = 0x18,
193 .rd_len_p0_u = 0x19,
194 .card_misc_cfg_reg = 0xd8,
195 .card_cfg_2_1_reg = 0xd9,
196 .cmd_rd_len_0 = 0xc0,
197 .cmd_rd_len_1 = 0xc1,
198 .cmd_rd_len_2 = 0xc2,
199 .cmd_rd_len_3 = 0xc3,
200 .cmd_cfg_0 = 0xc4,
201 .cmd_cfg_1 = 0xc5,
202 .cmd_cfg_2 = 0xc6,
203 .cmd_cfg_3 = 0xc7,
204 .fw_dump_host_ready = 0xcc,
205 .fw_dump_ctrl = 0xf0,
206 .fw_dump_start = 0xf1,
207 .fw_dump_end = 0xf8,
208 .func1_dump_reg_start = 0x10,
209 .func1_dump_reg_end = 0x17,
210 .func1_scratch_reg = 0xe8,
211 .func1_spec_reg_num = 13,
212 .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D,
213 0x60, 0x61, 0x62, 0x64,
214 0x65, 0x66, 0x68, 0x69,
215 0x6a},
216 };
217
218 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8887 = {
219 .start_rd_port = 0,
220 .start_wr_port = 0,
221 .base_0_reg = 0x6C,
222 .base_1_reg = 0x6D,
223 .poll_reg = 0x5C,
224 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
225 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
226 .host_int_rsr_reg = 0x4,
227 .host_int_status_reg = 0x0C,
228 .host_int_mask_reg = 0x08,
229 .status_reg_0 = 0x90,
230 .status_reg_1 = 0x91,
231 .sdio_int_mask = 0xff,
232 .data_port_mask = 0xffffffff,
233 .io_port_0_reg = 0xE4,
234 .io_port_1_reg = 0xE5,
235 .io_port_2_reg = 0xE6,
236 .max_mp_regs = 196,
237 .rd_bitmap_l = 0x10,
238 .rd_bitmap_u = 0x11,
239 .rd_bitmap_1l = 0x12,
240 .rd_bitmap_1u = 0x13,
241 .wr_bitmap_l = 0x14,
242 .wr_bitmap_u = 0x15,
243 .wr_bitmap_1l = 0x16,
244 .wr_bitmap_1u = 0x17,
245 .rd_len_p0_l = 0x18,
246 .rd_len_p0_u = 0x19,
247 .card_misc_cfg_reg = 0xd8,
248 .card_cfg_2_1_reg = 0xd9,
249 .cmd_rd_len_0 = 0xc0,
250 .cmd_rd_len_1 = 0xc1,
251 .cmd_rd_len_2 = 0xc2,
252 .cmd_rd_len_3 = 0xc3,
253 .cmd_cfg_0 = 0xc4,
254 .cmd_cfg_1 = 0xc5,
255 .cmd_cfg_2 = 0xc6,
256 .cmd_cfg_3 = 0xc7,
257 .func1_dump_reg_start = 0x10,
258 .func1_dump_reg_end = 0x17,
259 .func1_scratch_reg = 0x90,
260 .func1_spec_reg_num = 13,
261 .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D, 0x60,
262 0x61, 0x62, 0x64, 0x65, 0x66,
263 0x68, 0x69, 0x6a},
264 };
265
266 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd89xx = {
267 .start_rd_port = 0,
268 .start_wr_port = 0,
269 .base_0_reg = 0xF8,
270 .base_1_reg = 0xF9,
271 .poll_reg = 0x5C,
272 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
273 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
274 .host_int_rsr_reg = 0x4,
275 .host_int_status_reg = 0x0C,
276 .host_int_mask_reg = 0x08,
277 .host_strap_reg = 0xF4,
278 .host_strap_mask = 0x01,
279 .host_strap_value = 0x00,
280 .status_reg_0 = 0xE8,
281 .status_reg_1 = 0xE9,
282 .sdio_int_mask = 0xff,
283 .data_port_mask = 0xffffffff,
284 .io_port_0_reg = 0xE4,
285 .io_port_1_reg = 0xE5,
286 .io_port_2_reg = 0xE6,
287 .max_mp_regs = 196,
288 .rd_bitmap_l = 0x10,
289 .rd_bitmap_u = 0x11,
290 .rd_bitmap_1l = 0x12,
291 .rd_bitmap_1u = 0x13,
292 .wr_bitmap_l = 0x14,
293 .wr_bitmap_u = 0x15,
294 .wr_bitmap_1l = 0x16,
295 .wr_bitmap_1u = 0x17,
296 .rd_len_p0_l = 0x18,
297 .rd_len_p0_u = 0x19,
298 .card_misc_cfg_reg = 0xd8,
299 .card_cfg_2_1_reg = 0xd9,
300 .cmd_rd_len_0 = 0xc0,
301 .cmd_rd_len_1 = 0xc1,
302 .cmd_rd_len_2 = 0xc2,
303 .cmd_rd_len_3 = 0xc3,
304 .cmd_cfg_0 = 0xc4,
305 .cmd_cfg_1 = 0xc5,
306 .cmd_cfg_2 = 0xc6,
307 .cmd_cfg_3 = 0xc7,
308 .fw_dump_host_ready = 0xcc,
309 .fw_dump_ctrl = 0xf9,
310 .fw_dump_start = 0xf1,
311 .fw_dump_end = 0xf8,
312 .func1_dump_reg_start = 0x10,
313 .func1_dump_reg_end = 0x17,
314 .func1_scratch_reg = 0xE8,
315 .func1_spec_reg_num = 13,
316 .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D, 0x60,
317 0x61, 0x62, 0x64, 0x65, 0x66,
318 0x68, 0x69, 0x6a},
319 };
320
321 static const struct mwifiex_sdio_device mwifiex_sdio_sd8786 = {
322 .firmware = SD8786_DEFAULT_FW_NAME,
323 .reg = &mwifiex_reg_sd87xx,
324 .max_ports = 16,
325 .mp_agg_pkt_limit = 8,
326 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
327 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
328 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
329 .supports_sdio_new_mode = false,
330 .has_control_mask = true,
331 .can_dump_fw = false,
332 .can_auto_tdls = false,
333 .can_ext_scan = false,
334 };
335
336 static const struct mwifiex_sdio_device mwifiex_sdio_sd8787 = {
337 .firmware = SD8787_DEFAULT_FW_NAME,
338 .reg = &mwifiex_reg_sd87xx,
339 .max_ports = 16,
340 .mp_agg_pkt_limit = 8,
341 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
342 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
343 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
344 .supports_sdio_new_mode = false,
345 .has_control_mask = true,
346 .can_dump_fw = false,
347 .can_auto_tdls = false,
348 .can_ext_scan = true,
349 };
350
351 static const struct mwifiex_sdio_device mwifiex_sdio_sd8797 = {
352 .firmware = SD8797_DEFAULT_FW_NAME,
353 .reg = &mwifiex_reg_sd87xx,
354 .max_ports = 16,
355 .mp_agg_pkt_limit = 8,
356 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
357 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
358 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
359 .supports_sdio_new_mode = false,
360 .has_control_mask = true,
361 .can_dump_fw = false,
362 .can_auto_tdls = false,
363 .can_ext_scan = true,
364 };
365
366 static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = {
367 .firmware = SD8897_DEFAULT_FW_NAME,
368 .reg = &mwifiex_reg_sd8897,
369 .max_ports = 32,
370 .mp_agg_pkt_limit = 16,
371 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
372 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
373 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
374 .supports_sdio_new_mode = true,
375 .has_control_mask = false,
376 .can_dump_fw = true,
377 .can_auto_tdls = false,
378 .can_ext_scan = true,
379 };
380
381 static const struct mwifiex_sdio_device mwifiex_sdio_sd8977 = {
382 .firmware = SD8977_DEFAULT_FW_NAME,
383 .reg = &mwifiex_reg_sd8977,
384 .max_ports = 32,
385 .mp_agg_pkt_limit = 16,
386 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
387 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
388 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
389 .supports_sdio_new_mode = true,
390 .has_control_mask = false,
391 .can_dump_fw = true,
392 .fw_dump_enh = true,
393 .can_auto_tdls = false,
394 .can_ext_scan = true,
395 };
396
397 static const struct mwifiex_sdio_device mwifiex_sdio_sd8978 = {
398 .firmware_sdiouart = SD8978_SDIOUART_FW_NAME,
399 .reg = &mwifiex_reg_sd89xx,
400 .max_ports = 32,
401 .mp_agg_pkt_limit = 16,
402 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
403 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
404 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
405 .supports_sdio_new_mode = true,
406 .has_control_mask = false,
407 .can_dump_fw = true,
408 .fw_dump_enh = true,
409 .can_auto_tdls = false,
410 .can_ext_scan = true,
411 };
412
413 static const struct mwifiex_sdio_device mwifiex_sdio_sd8997 = {
414 .firmware = SD8997_DEFAULT_FW_NAME,
415 .firmware_sdiouart = SD8997_SDIOUART_FW_NAME,
416 .reg = &mwifiex_reg_sd8997,
417 .max_ports = 32,
418 .mp_agg_pkt_limit = 16,
419 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
420 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
421 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
422 .supports_sdio_new_mode = true,
423 .has_control_mask = false,
424 .can_dump_fw = true,
425 .fw_dump_enh = true,
426 .can_auto_tdls = false,
427 .can_ext_scan = true,
428 };
429
430 static const struct mwifiex_sdio_device mwifiex_sdio_sd8887 = {
431 .firmware = SD8887_DEFAULT_FW_NAME,
432 .reg = &mwifiex_reg_sd8887,
433 .max_ports = 32,
434 .mp_agg_pkt_limit = 16,
435 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
436 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
437 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
438 .supports_sdio_new_mode = true,
439 .has_control_mask = false,
440 .can_dump_fw = false,
441 .can_auto_tdls = true,
442 .can_ext_scan = true,
443 };
444
445 static const struct mwifiex_sdio_device mwifiex_sdio_sd8987 = {
446 .firmware = SD8987_DEFAULT_FW_NAME,
447 .reg = &mwifiex_reg_sd89xx,
448 .max_ports = 32,
449 .mp_agg_pkt_limit = 16,
450 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
451 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
452 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
453 .supports_sdio_new_mode = true,
454 .has_control_mask = false,
455 .can_dump_fw = true,
456 .fw_dump_enh = true,
457 .can_auto_tdls = true,
458 .can_ext_scan = true,
459 };
460
461 static const struct mwifiex_sdio_device mwifiex_sdio_sd8801 = {
462 .firmware = SD8801_DEFAULT_FW_NAME,
463 .reg = &mwifiex_reg_sd87xx,
464 .max_ports = 16,
465 .mp_agg_pkt_limit = 8,
466 .supports_sdio_new_mode = false,
467 .has_control_mask = true,
468 .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
469 .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
470 .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
471 .can_dump_fw = false,
472 .can_auto_tdls = false,
473 .can_ext_scan = true,
474 };
475
476 static struct memory_type_mapping generic_mem_type_map[] = {
477 {"DUMP", NULL, 0, 0xDD},
478 };
479
480 static struct memory_type_mapping mem_type_mapping_tbl[] = {
481 {"ITCM", NULL, 0, 0xF0},
482 {"DTCM", NULL, 0, 0xF1},
483 {"SQRAM", NULL, 0, 0xF2},
484 {"APU", NULL, 0, 0xF3},
485 {"CIU", NULL, 0, 0xF4},
486 {"ICU", NULL, 0, 0xF5},
487 {"MAC", NULL, 0, 0xF6},
488 {"EXT7", NULL, 0, 0xF7},
489 {"EXT8", NULL, 0, 0xF8},
490 {"EXT9", NULL, 0, 0xF9},
491 {"EXT10", NULL, 0, 0xFA},
492 {"EXT11", NULL, 0, 0xFB},
493 {"EXT12", NULL, 0, 0xFC},
494 {"EXT13", NULL, 0, 0xFD},
495 {"EXTLAST", NULL, 0, 0xFE},
496 };
497
498 static const struct of_device_id mwifiex_sdio_of_match_table[] __maybe_unused = {
499 { .compatible = "marvell,sd8787" },
500 { .compatible = "marvell,sd8897" },
501 { .compatible = "marvell,sd8978" },
502 { .compatible = "marvell,sd8997" },
503 { .compatible = "nxp,iw416" },
504 { }
505 };
506
507 /* This function parse device tree node using mmc subnode devicetree API.
508 * The device node is saved in card->plt_of_node.
509 * if the device tree node exist and include interrupts attributes, this
510 * function will also request platform specific wakeup interrupt.
511 */
mwifiex_sdio_probe_of(struct device * dev)512 static int mwifiex_sdio_probe_of(struct device *dev)
513 {
514 if (!of_match_node(mwifiex_sdio_of_match_table, dev->of_node)) {
515 dev_err(dev, "required compatible string missing\n");
516 return -EINVAL;
517 }
518
519 return 0;
520 }
521
522 /*
523 * SDIO probe.
524 *
525 * This function probes an mwifiex device and registers it. It allocates
526 * the card structure, enables SDIO function number and initiates the
527 * device registration and initialization procedure by adding a logical
528 * interface.
529 */
530 static int
mwifiex_sdio_probe(struct sdio_func * func,const struct sdio_device_id * id)531 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
532 {
533 int ret;
534 struct sdio_mmc_card *card = NULL;
535
536 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
537 func->vendor, func->device, func->class, func->num);
538
539 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
540 if (!card)
541 return -ENOMEM;
542
543 init_completion(&card->fw_done);
544
545 card->func = func;
546
547 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
548
549 if (id->driver_data) {
550 struct mwifiex_sdio_device *data = (void *)id->driver_data;
551
552 card->firmware = data->firmware;
553 card->firmware_sdiouart = data->firmware_sdiouart;
554 card->reg = data->reg;
555 card->max_ports = data->max_ports;
556 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
557 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
558 card->has_control_mask = data->has_control_mask;
559 card->tx_buf_size = data->tx_buf_size;
560 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
561 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
562 card->can_dump_fw = data->can_dump_fw;
563 card->fw_dump_enh = data->fw_dump_enh;
564 card->can_auto_tdls = data->can_auto_tdls;
565 card->can_ext_scan = data->can_ext_scan;
566 INIT_WORK(&card->work, mwifiex_sdio_work);
567 }
568
569 sdio_claim_host(func);
570 ret = sdio_enable_func(func);
571 sdio_release_host(func);
572
573 if (ret) {
574 dev_err(&func->dev, "failed to enable function\n");
575 return ret;
576 }
577
578 /* device tree node parsing and platform specific configuration*/
579 if (func->dev.of_node) {
580 ret = mwifiex_sdio_probe_of(&func->dev);
581 if (ret)
582 goto err_disable;
583 }
584
585 ret = mwifiex_add_card(card, &card->fw_done, &sdio_ops,
586 MWIFIEX_SDIO, &func->dev);
587 if (ret) {
588 dev_err(&func->dev, "add card failed\n");
589 goto err_disable;
590 }
591
592 return 0;
593
594 err_disable:
595 sdio_claim_host(func);
596 sdio_disable_func(func);
597 sdio_release_host(func);
598
599 return ret;
600 }
601
602 /*
603 * SDIO resume.
604 *
605 * Kernel needs to suspend all functions separately. Therefore all
606 * registered functions must have drivers with suspend and resume
607 * methods. Failing that the kernel simply removes the whole card.
608 *
609 * If already not resumed, this function turns on the traffic and
610 * sends a host sleep cancel request to the firmware.
611 */
mwifiex_sdio_resume(struct device * dev)612 static int mwifiex_sdio_resume(struct device *dev)
613 {
614 struct sdio_func *func = dev_to_sdio_func(dev);
615 struct sdio_mmc_card *card;
616 struct mwifiex_adapter *adapter;
617
618 card = sdio_get_drvdata(func);
619 if (!card || !card->adapter) {
620 dev_err(dev, "resume: invalid card or adapter\n");
621 return 0;
622 }
623
624 adapter = card->adapter;
625
626 if (!test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) {
627 mwifiex_dbg(adapter, WARN,
628 "device already resumed\n");
629 return 0;
630 }
631
632 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
633
634 /* Disable Host Sleep */
635 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
636 MWIFIEX_SYNC_CMD);
637
638 mwifiex_disable_wake(adapter);
639
640 return 0;
641 }
642
643 /* Write data into SDIO card register. Caller claims SDIO device. */
644 static int
mwifiex_write_reg_locked(struct sdio_func * func,u32 reg,u8 data)645 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
646 {
647 int ret = -1;
648
649 sdio_writeb(func, data, reg, &ret);
650 return ret;
651 }
652
653 /* This function writes data into SDIO card register.
654 */
655 static int
mwifiex_write_reg(struct mwifiex_adapter * adapter,u32 reg,u8 data)656 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
657 {
658 struct sdio_mmc_card *card = adapter->card;
659 int ret;
660
661 sdio_claim_host(card->func);
662 ret = mwifiex_write_reg_locked(card->func, reg, data);
663 sdio_release_host(card->func);
664
665 return ret;
666 }
667
668 /* This function reads data from SDIO card register.
669 */
670 static int
mwifiex_read_reg(struct mwifiex_adapter * adapter,u32 reg,u8 * data)671 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
672 {
673 struct sdio_mmc_card *card = adapter->card;
674 int ret = -1;
675 u8 val;
676
677 sdio_claim_host(card->func);
678 val = sdio_readb(card->func, reg, &ret);
679 sdio_release_host(card->func);
680
681 *data = val;
682
683 return ret;
684 }
685
686 /* This function writes multiple data into SDIO card memory.
687 *
688 * This does not work in suspended mode.
689 */
690 static int
mwifiex_write_data_sync(struct mwifiex_adapter * adapter,u8 * buffer,u32 pkt_len,u32 port)691 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
692 u8 *buffer, u32 pkt_len, u32 port)
693 {
694 struct sdio_mmc_card *card = adapter->card;
695 int ret;
696 u8 blk_mode =
697 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
698 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
699 u32 blk_cnt =
700 (blk_mode ==
701 BLOCK_MODE) ? (pkt_len /
702 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
703 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
704
705 if (test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) {
706 mwifiex_dbg(adapter, ERROR,
707 "%s: not allowed while suspended\n", __func__);
708 return -1;
709 }
710
711 sdio_claim_host(card->func);
712
713 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
714
715 sdio_release_host(card->func);
716
717 return ret;
718 }
719
720 /* This function reads multiple data from SDIO card memory.
721 */
mwifiex_read_data_sync(struct mwifiex_adapter * adapter,u8 * buffer,u32 len,u32 port,u8 claim)722 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
723 u32 len, u32 port, u8 claim)
724 {
725 struct sdio_mmc_card *card = adapter->card;
726 int ret;
727 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
728 : BLOCK_MODE;
729 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
730 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
731 : len;
732 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
733
734 if (claim)
735 sdio_claim_host(card->func);
736
737 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
738
739 if (claim)
740 sdio_release_host(card->func);
741
742 return ret;
743 }
744
745 /* This function reads the firmware status.
746 */
747 static int
mwifiex_sdio_read_fw_status(struct mwifiex_adapter * adapter,u16 * dat)748 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
749 {
750 struct sdio_mmc_card *card = adapter->card;
751 const struct mwifiex_sdio_card_reg *reg = card->reg;
752 u8 fws0, fws1;
753
754 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
755 return -1;
756
757 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
758 return -1;
759
760 *dat = (u16)((fws1 << 8) | fws0);
761 return 0;
762 }
763
764 /* This function checks the firmware status in card.
765 */
mwifiex_check_fw_status(struct mwifiex_adapter * adapter,u32 poll_num)766 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
767 u32 poll_num)
768 {
769 int ret = 0;
770 u16 firmware_stat;
771 u32 tries;
772
773 for (tries = 0; tries < poll_num; tries++) {
774 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
775 if (ret)
776 continue;
777 if (firmware_stat == FIRMWARE_READY_SDIO) {
778 ret = 0;
779 break;
780 }
781
782 msleep(100);
783 ret = -1;
784 }
785
786 return ret;
787 }
788
789 /* This function checks if WLAN is the winner.
790 */
mwifiex_check_winner_status(struct mwifiex_adapter * adapter)791 static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
792 {
793 int ret = 0;
794 u8 winner = 0;
795 struct sdio_mmc_card *card = adapter->card;
796
797 if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner))
798 return -1;
799
800 if (winner)
801 adapter->winner = 0;
802 else
803 adapter->winner = 1;
804
805 return ret;
806 }
807
808 /*
809 * SDIO remove.
810 *
811 * This function removes the interface and frees up the card structure.
812 */
813 static void
mwifiex_sdio_remove(struct sdio_func * func)814 mwifiex_sdio_remove(struct sdio_func *func)
815 {
816 struct sdio_mmc_card *card;
817 struct mwifiex_adapter *adapter;
818 struct mwifiex_private *priv;
819 int ret = 0;
820 u16 firmware_stat;
821
822 card = sdio_get_drvdata(func);
823 if (!card)
824 return;
825
826 wait_for_completion(&card->fw_done);
827
828 adapter = card->adapter;
829 if (!adapter || !adapter->priv_num)
830 return;
831
832 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
833
834 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
835 if (!ret && firmware_stat == FIRMWARE_READY_SDIO &&
836 !adapter->mfg_mode) {
837 mwifiex_deauthenticate_all(adapter);
838
839 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
840 mwifiex_disable_auto_ds(priv);
841 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
842 }
843
844 mwifiex_remove_card(adapter);
845 }
846
847 /*
848 * SDIO suspend.
849 *
850 * Kernel needs to suspend all functions separately. Therefore all
851 * registered functions must have drivers with suspend and resume
852 * methods. Failing that the kernel simply removes the whole card.
853 *
854 * If already not suspended, this function allocates and sends a host
855 * sleep activate request to the firmware and turns off the traffic.
856 */
mwifiex_sdio_suspend(struct device * dev)857 static int mwifiex_sdio_suspend(struct device *dev)
858 {
859 struct sdio_func *func = dev_to_sdio_func(dev);
860 struct sdio_mmc_card *card;
861 struct mwifiex_adapter *adapter;
862 mmc_pm_flag_t pm_flag = 0;
863 int ret = 0;
864
865 pm_flag = sdio_get_host_pm_caps(func);
866 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
867 sdio_func_id(func), pm_flag);
868 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
869 dev_err(dev, "%s: cannot remain alive while host is"
870 " suspended\n", sdio_func_id(func));
871 return -ENOSYS;
872 }
873
874 card = sdio_get_drvdata(func);
875 if (!card) {
876 dev_err(dev, "suspend: invalid card\n");
877 return 0;
878 }
879
880 /* Might still be loading firmware */
881 wait_for_completion(&card->fw_done);
882
883 adapter = card->adapter;
884 if (!adapter) {
885 dev_err(dev, "adapter is not valid\n");
886 return 0;
887 }
888
889 if (!adapter->is_up)
890 return -EBUSY;
891
892 mwifiex_enable_wake(adapter);
893
894 /* Enable the Host Sleep */
895 if (!mwifiex_enable_hs(adapter)) {
896 mwifiex_dbg(adapter, ERROR,
897 "cmd: failed to suspend\n");
898 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags);
899 mwifiex_disable_wake(adapter);
900 return -EFAULT;
901 }
902
903 mwifiex_dbg(adapter, INFO,
904 "cmd: suspend with MMC_PM_KEEP_POWER\n");
905 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
906
907 /* Indicate device suspended */
908 set_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
909 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags);
910
911 return ret;
912 }
913
mwifiex_sdio_coredump(struct device * dev)914 static void mwifiex_sdio_coredump(struct device *dev)
915 {
916 struct sdio_func *func = dev_to_sdio_func(dev);
917 struct sdio_mmc_card *card;
918
919 card = sdio_get_drvdata(func);
920 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
921 &card->work_flags))
922 schedule_work(&card->work);
923 }
924
925 /* WLAN IDs */
926 static const struct sdio_device_id mwifiex_ids[] = {
927 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786_WLAN),
928 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
929 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787_WLAN),
930 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
931 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797_WLAN),
932 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
933 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897_WLAN),
934 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
935 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887_WLAN),
936 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
937 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801_WLAN),
938 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
939 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8977_WLAN),
940 .driver_data = (unsigned long)&mwifiex_sdio_sd8977},
941 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8978_WLAN),
942 .driver_data = (unsigned long)&mwifiex_sdio_sd8978},
943 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8987_WLAN),
944 .driver_data = (unsigned long)&mwifiex_sdio_sd8987},
945 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997_WLAN),
946 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
947 {},
948 };
949
950 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
951
952 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
953 .suspend = mwifiex_sdio_suspend,
954 .resume = mwifiex_sdio_resume,
955 };
956
957 static struct sdio_driver mwifiex_sdio = {
958 .name = "mwifiex_sdio",
959 .id_table = mwifiex_ids,
960 .probe = mwifiex_sdio_probe,
961 .remove = mwifiex_sdio_remove,
962 .drv = {
963 .owner = THIS_MODULE,
964 .coredump = mwifiex_sdio_coredump,
965 .pm = &mwifiex_sdio_pm_ops,
966 }
967 };
968
969 /*
970 * This function wakes up the card.
971 *
972 * A host power up command is written to the card configuration
973 * register to wake up the card.
974 */
mwifiex_pm_wakeup_card(struct mwifiex_adapter * adapter)975 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
976 {
977 mwifiex_dbg(adapter, EVENT,
978 "event: wakeup device...\n");
979
980 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
981 }
982
983 /*
984 * This function is called after the card has woken up.
985 *
986 * The card configuration register is reset.
987 */
mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter * adapter)988 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
989 {
990 mwifiex_dbg(adapter, EVENT,
991 "cmd: wakeup device completed\n");
992
993 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
994 }
995
mwifiex_sdio_dnld_fw(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * fw)996 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter,
997 struct mwifiex_fw_image *fw)
998 {
999 struct sdio_mmc_card *card = adapter->card;
1000 int ret;
1001
1002 sdio_claim_host(card->func);
1003 ret = mwifiex_dnld_fw(adapter, fw);
1004 sdio_release_host(card->func);
1005
1006 return ret;
1007 }
1008
1009 /*
1010 * This function is used to initialize IO ports for the
1011 * chipsets supporting SDIO new mode eg SD8897.
1012 */
mwifiex_init_sdio_new_mode(struct mwifiex_adapter * adapter)1013 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
1014 {
1015 u8 reg;
1016 struct sdio_mmc_card *card = adapter->card;
1017
1018 adapter->ioport = MEM_PORT;
1019
1020 /* enable sdio new mode */
1021 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®))
1022 return -1;
1023 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
1024 reg | CMD53_NEW_MODE))
1025 return -1;
1026
1027 /* Configure cmd port and enable reading rx length from the register */
1028 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®))
1029 return -1;
1030 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
1031 reg | CMD_PORT_RD_LEN_EN))
1032 return -1;
1033
1034 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
1035 * completed
1036 */
1037 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®))
1038 return -1;
1039 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
1040 reg | CMD_PORT_AUTO_EN))
1041 return -1;
1042
1043 return 0;
1044 }
1045
1046 /* This function initializes the IO ports.
1047 *
1048 * The following operations are performed -
1049 * - Read the IO ports (0, 1 and 2)
1050 * - Set host interrupt Reset-To-Read to clear
1051 * - Set auto re-enable interrupt
1052 */
mwifiex_init_sdio_ioport(struct mwifiex_adapter * adapter)1053 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
1054 {
1055 u8 reg;
1056 struct sdio_mmc_card *card = adapter->card;
1057
1058 adapter->ioport = 0;
1059
1060 if (card->supports_sdio_new_mode) {
1061 if (mwifiex_init_sdio_new_mode(adapter))
1062 return -1;
1063 goto cont;
1064 }
1065
1066 /* Read the IO port */
1067 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®))
1068 adapter->ioport |= (reg & 0xff);
1069 else
1070 return -1;
1071
1072 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®))
1073 adapter->ioport |= ((reg & 0xff) << 8);
1074 else
1075 return -1;
1076
1077 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®))
1078 adapter->ioport |= ((reg & 0xff) << 16);
1079 else
1080 return -1;
1081 cont:
1082 mwifiex_dbg(adapter, INFO,
1083 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
1084
1085 /* Set Host interrupt reset to read to clear */
1086 if (mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®))
1087 return -1;
1088 if (mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
1089 reg | card->reg->sdio_int_mask))
1090 return -1;
1091
1092 /* Dnld/Upld ready set to auto reset */
1093 if (mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
1094 return -1;
1095 if (mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
1096 reg | AUTO_RE_ENABLE_INT))
1097 return -1;
1098
1099 return 0;
1100 }
1101
1102 /*
1103 * This function sends data to the card.
1104 */
mwifiex_write_data_to_card(struct mwifiex_adapter * adapter,u8 * payload,u32 pkt_len,u32 port)1105 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
1106 u8 *payload, u32 pkt_len, u32 port)
1107 {
1108 u32 i = 0;
1109 int ret;
1110
1111 do {
1112 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
1113 if (ret) {
1114 i++;
1115 mwifiex_dbg(adapter, ERROR,
1116 "host_to_card, write iomem\t"
1117 "(%d) failed: %d\n", i, ret);
1118 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1119 mwifiex_dbg(adapter, ERROR,
1120 "write CFG reg failed\n");
1121
1122 ret = -1;
1123 if (i > MAX_WRITE_IOMEM_RETRY)
1124 return ret;
1125 }
1126 } while (ret == -1);
1127
1128 return ret;
1129 }
1130
1131 /*
1132 * This function gets the read port.
1133 *
1134 * If control port bit is set in MP read bitmap, the control port
1135 * is returned, otherwise the current read port is returned and
1136 * the value is increased (provided it does not reach the maximum
1137 * limit, in which case it is reset to 1)
1138 */
mwifiex_get_rd_port(struct mwifiex_adapter * adapter,u8 * port)1139 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
1140 {
1141 struct sdio_mmc_card *card = adapter->card;
1142 const struct mwifiex_sdio_card_reg *reg = card->reg;
1143 u32 rd_bitmap = card->mp_rd_bitmap;
1144
1145 mwifiex_dbg(adapter, DATA,
1146 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
1147
1148 if (card->supports_sdio_new_mode) {
1149 if (!(rd_bitmap & reg->data_port_mask))
1150 return -1;
1151 } else {
1152 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
1153 return -1;
1154 }
1155
1156 if ((card->has_control_mask) &&
1157 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
1158 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
1159 *port = CTRL_PORT;
1160 mwifiex_dbg(adapter, DATA,
1161 "data: port=%d mp_rd_bitmap=0x%08x\n",
1162 *port, card->mp_rd_bitmap);
1163 return 0;
1164 }
1165
1166 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
1167 return -1;
1168
1169 /* We are now handling the SDIO data ports */
1170 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
1171 *port = card->curr_rd_port;
1172
1173 if (++card->curr_rd_port == card->max_ports)
1174 card->curr_rd_port = reg->start_rd_port;
1175
1176 mwifiex_dbg(adapter, DATA,
1177 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
1178 *port, rd_bitmap, card->mp_rd_bitmap);
1179
1180 return 0;
1181 }
1182
1183 /*
1184 * This function gets the write port for data.
1185 *
1186 * The current write port is returned if available and the value is
1187 * increased (provided it does not reach the maximum limit, in which
1188 * case it is reset to 1)
1189 */
mwifiex_get_wr_port_data(struct mwifiex_adapter * adapter,u32 * port)1190 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
1191 {
1192 struct sdio_mmc_card *card = adapter->card;
1193 const struct mwifiex_sdio_card_reg *reg = card->reg;
1194 u32 wr_bitmap = card->mp_wr_bitmap;
1195
1196 mwifiex_dbg(adapter, DATA,
1197 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
1198
1199 if (!(wr_bitmap & card->mp_data_port_mask)) {
1200 adapter->data_sent = true;
1201 return -EBUSY;
1202 }
1203
1204 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
1205 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
1206 *port = card->curr_wr_port;
1207 if (++card->curr_wr_port == card->mp_end_port)
1208 card->curr_wr_port = reg->start_wr_port;
1209 } else {
1210 adapter->data_sent = true;
1211 return -EBUSY;
1212 }
1213
1214 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
1215 mwifiex_dbg(adapter, ERROR,
1216 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
1217 *port, card->curr_wr_port, wr_bitmap,
1218 card->mp_wr_bitmap);
1219 return -1;
1220 }
1221
1222 mwifiex_dbg(adapter, DATA,
1223 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
1224 *port, wr_bitmap, card->mp_wr_bitmap);
1225
1226 return 0;
1227 }
1228
1229 /*
1230 * This function polls the card status.
1231 */
1232 static int
mwifiex_sdio_poll_card_status(struct mwifiex_adapter * adapter,u8 bits)1233 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
1234 {
1235 struct sdio_mmc_card *card = adapter->card;
1236 u32 tries;
1237 u8 cs;
1238
1239 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1240 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
1241 break;
1242 else if ((cs & bits) == bits)
1243 return 0;
1244
1245 usleep_range(10, 20);
1246 }
1247
1248 mwifiex_dbg(adapter, ERROR,
1249 "poll card status failed, tries = %d\n", tries);
1250
1251 return -1;
1252 }
1253
1254 /*
1255 * This function disables the host interrupt.
1256 *
1257 * The host interrupt mask is read, the disable bit is reset and
1258 * written back to the card host interrupt mask register.
1259 */
mwifiex_sdio_disable_host_int(struct mwifiex_adapter * adapter)1260 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
1261 {
1262 struct sdio_mmc_card *card = adapter->card;
1263 struct sdio_func *func = card->func;
1264
1265 sdio_claim_host(func);
1266 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
1267 sdio_release_irq(func);
1268 sdio_release_host(func);
1269 }
1270
1271 /*
1272 * This function reads the interrupt status from card.
1273 */
mwifiex_interrupt_status(struct mwifiex_adapter * adapter)1274 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
1275 {
1276 struct sdio_mmc_card *card = adapter->card;
1277 u8 sdio_ireg;
1278 unsigned long flags;
1279
1280 if (mwifiex_read_data_sync(adapter, card->mp_regs,
1281 card->reg->max_mp_regs,
1282 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
1283 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
1284 return;
1285 }
1286
1287 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
1288 if (sdio_ireg) {
1289 /*
1290 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
1291 * For SDIO new mode CMD port interrupts
1292 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
1293 * UP_LD_CMD_PORT_HOST_INT_STATUS
1294 * Clear the interrupt status register
1295 */
1296 mwifiex_dbg(adapter, INTR,
1297 "int: sdio_ireg = %#x\n", sdio_ireg);
1298 spin_lock_irqsave(&adapter->int_lock, flags);
1299 adapter->int_status |= sdio_ireg;
1300 spin_unlock_irqrestore(&adapter->int_lock, flags);
1301 }
1302 }
1303
1304 /*
1305 * SDIO interrupt handler.
1306 *
1307 * This function reads the interrupt status from firmware and handles
1308 * the interrupt in current thread (ksdioirqd) right away.
1309 */
1310 static void
mwifiex_sdio_interrupt(struct sdio_func * func)1311 mwifiex_sdio_interrupt(struct sdio_func *func)
1312 {
1313 struct mwifiex_adapter *adapter;
1314 struct sdio_mmc_card *card;
1315
1316 card = sdio_get_drvdata(func);
1317 if (!card || !card->adapter) {
1318 pr_err("int: func=%p card=%p adapter=%p\n",
1319 func, card, card ? card->adapter : NULL);
1320 return;
1321 }
1322 adapter = card->adapter;
1323
1324 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
1325 adapter->ps_state = PS_STATE_AWAKE;
1326
1327 mwifiex_interrupt_status(adapter);
1328 mwifiex_main_process(adapter);
1329 }
1330
1331 /*
1332 * This function enables the host interrupt.
1333 *
1334 * The host interrupt enable mask is written to the card
1335 * host interrupt mask register.
1336 */
mwifiex_sdio_enable_host_int(struct mwifiex_adapter * adapter)1337 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
1338 {
1339 struct sdio_mmc_card *card = adapter->card;
1340 struct sdio_func *func = card->func;
1341 int ret;
1342
1343 sdio_claim_host(func);
1344
1345 /* Request the SDIO IRQ */
1346 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
1347 if (ret) {
1348 mwifiex_dbg(adapter, ERROR,
1349 "claim irq failed: ret=%d\n", ret);
1350 goto out;
1351 }
1352
1353 /* Simply write the mask to the register */
1354 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
1355 card->reg->host_int_enable);
1356 if (ret) {
1357 mwifiex_dbg(adapter, ERROR,
1358 "enable host interrupt failed\n");
1359 sdio_release_irq(func);
1360 }
1361
1362 out:
1363 sdio_release_host(func);
1364 return ret;
1365 }
1366
1367 /*
1368 * This function sends a data buffer to the card.
1369 */
mwifiex_sdio_card_to_host(struct mwifiex_adapter * adapter,u32 * type,u8 * buffer,u32 npayload,u32 ioport)1370 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
1371 u32 *type, u8 *buffer,
1372 u32 npayload, u32 ioport)
1373 {
1374 int ret;
1375 u32 nb;
1376
1377 if (!buffer) {
1378 mwifiex_dbg(adapter, ERROR,
1379 "%s: buffer is NULL\n", __func__);
1380 return -1;
1381 }
1382
1383 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
1384
1385 if (ret) {
1386 mwifiex_dbg(adapter, ERROR,
1387 "%s: read iomem failed: %d\n", __func__,
1388 ret);
1389 return -1;
1390 }
1391
1392 nb = get_unaligned_le16((buffer));
1393 if (nb > npayload) {
1394 mwifiex_dbg(adapter, ERROR,
1395 "%s: invalid packet, nb=%d npayload=%d\n",
1396 __func__, nb, npayload);
1397 return -1;
1398 }
1399
1400 *type = get_unaligned_le16((buffer + 2));
1401
1402 return ret;
1403 }
1404
1405 /*
1406 * This function downloads the firmware to the card.
1407 *
1408 * Firmware is downloaded to the card in blocks. Every block download
1409 * is tested for CRC errors, and retried a number of times before
1410 * returning failure.
1411 */
mwifiex_prog_fw_w_helper(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * fw)1412 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
1413 struct mwifiex_fw_image *fw)
1414 {
1415 struct sdio_mmc_card *card = adapter->card;
1416 const struct mwifiex_sdio_card_reg *reg = card->reg;
1417 int ret;
1418 u8 *firmware = fw->fw_buf;
1419 u32 firmware_len = fw->fw_len;
1420 u32 offset = 0;
1421 u8 base0, base1;
1422 u8 *fwbuf;
1423 u16 len = 0;
1424 u32 txlen, tx_blocks = 0, tries;
1425 u32 i = 0;
1426
1427 if (!firmware_len) {
1428 mwifiex_dbg(adapter, ERROR,
1429 "firmware image not found! Terminating download\n");
1430 return -1;
1431 }
1432
1433 mwifiex_dbg(adapter, INFO,
1434 "info: downloading FW image (%d bytes)\n",
1435 firmware_len);
1436
1437 /* Assume that the allocated buffer is 8-byte aligned */
1438 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
1439 if (!fwbuf)
1440 return -ENOMEM;
1441
1442 sdio_claim_host(card->func);
1443
1444 /* Perform firmware data transfer */
1445 do {
1446 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
1447 bits */
1448 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
1449 DN_LD_CARD_RDY);
1450 if (ret) {
1451 mwifiex_dbg(adapter, ERROR,
1452 "FW download with helper:\t"
1453 "poll status timeout @ %d\n", offset);
1454 goto done;
1455 }
1456
1457 /* More data? */
1458 if (offset >= firmware_len)
1459 break;
1460
1461 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1462 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
1463 &base0);
1464 if (ret) {
1465 mwifiex_dbg(adapter, ERROR,
1466 "dev BASE0 register read failed:\t"
1467 "base0=%#04X(%d). Terminating dnld\n",
1468 base0, base0);
1469 goto done;
1470 }
1471 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
1472 &base1);
1473 if (ret) {
1474 mwifiex_dbg(adapter, ERROR,
1475 "dev BASE1 register read failed:\t"
1476 "base1=%#04X(%d). Terminating dnld\n",
1477 base1, base1);
1478 goto done;
1479 }
1480 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
1481
1482 if (len)
1483 break;
1484
1485 usleep_range(10, 20);
1486 }
1487
1488 if (!len) {
1489 break;
1490 } else if (len > MWIFIEX_UPLD_SIZE) {
1491 mwifiex_dbg(adapter, ERROR,
1492 "FW dnld failed @ %d, invalid length %d\n",
1493 offset, len);
1494 ret = -1;
1495 goto done;
1496 }
1497
1498 txlen = len;
1499
1500 if (len & BIT(0)) {
1501 i++;
1502 if (i > MAX_WRITE_IOMEM_RETRY) {
1503 mwifiex_dbg(adapter, ERROR,
1504 "FW dnld failed @ %d, over max retry\n",
1505 offset);
1506 ret = -1;
1507 goto done;
1508 }
1509 mwifiex_dbg(adapter, ERROR,
1510 "CRC indicated by the helper:\t"
1511 "len = 0x%04X, txlen = %d\n", len, txlen);
1512 len &= ~BIT(0);
1513 /* Setting this to 0 to resend from same offset */
1514 txlen = 0;
1515 } else {
1516 i = 0;
1517
1518 /* Set blocksize to transfer - checking for last
1519 block */
1520 if (firmware_len - offset < txlen)
1521 txlen = firmware_len - offset;
1522
1523 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1524 / MWIFIEX_SDIO_BLOCK_SIZE;
1525
1526 /* Copy payload to buffer */
1527 memmove(fwbuf, &firmware[offset], txlen);
1528 }
1529
1530 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1531 MWIFIEX_SDIO_BLOCK_SIZE,
1532 adapter->ioport);
1533 if (ret) {
1534 mwifiex_dbg(adapter, ERROR,
1535 "FW download, write iomem (%d) failed @ %d\n",
1536 i, offset);
1537 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1538 mwifiex_dbg(adapter, ERROR,
1539 "write CFG reg failed\n");
1540
1541 ret = -1;
1542 goto done;
1543 }
1544
1545 offset += txlen;
1546 } while (true);
1547
1548 mwifiex_dbg(adapter, MSG,
1549 "info: FW download over, size %d bytes\n", offset);
1550
1551 ret = 0;
1552 done:
1553 sdio_release_host(card->func);
1554 kfree(fwbuf);
1555 return ret;
1556 }
1557
1558 /*
1559 * This function decodes sdio aggregation pkt.
1560 *
1561 * Based on the data block size and pkt_len,
1562 * skb data will be decoded to few packets.
1563 */
mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter * adapter,struct sk_buff * skb)1564 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1565 struct sk_buff *skb)
1566 {
1567 u32 total_pkt_len, pkt_len;
1568 struct sk_buff *skb_deaggr;
1569 u16 blk_size;
1570 u8 blk_num;
1571 u8 *data;
1572
1573 data = skb->data;
1574 total_pkt_len = skb->len;
1575
1576 while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) {
1577 if (total_pkt_len < adapter->sdio_rx_block_size)
1578 break;
1579 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1580 blk_size = adapter->sdio_rx_block_size * blk_num;
1581 if (blk_size > total_pkt_len) {
1582 mwifiex_dbg(adapter, ERROR,
1583 "%s: error in blk_size,\t"
1584 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1585 __func__, blk_num, blk_size, total_pkt_len);
1586 break;
1587 }
1588 pkt_len = get_unaligned_le16((data +
1589 SDIO_HEADER_OFFSET));
1590 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1591 mwifiex_dbg(adapter, ERROR,
1592 "%s: error in pkt_len,\t"
1593 "pkt_len=%d, blk_size=%d\n",
1594 __func__, pkt_len, blk_size);
1595 break;
1596 }
1597
1598 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
1599 if (!skb_deaggr)
1600 break;
1601 skb_put(skb_deaggr, pkt_len);
1602 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1603 skb_pull(skb_deaggr, adapter->intf_hdr_len);
1604
1605 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1606 data += blk_size;
1607 total_pkt_len -= blk_size;
1608 }
1609 }
1610
1611 /*
1612 * This function decodes a received packet.
1613 *
1614 * Based on the type, the packet is treated as either a data, or
1615 * a command response, or an event, and the correct handler
1616 * function is invoked.
1617 */
mwifiex_decode_rx_packet(struct mwifiex_adapter * adapter,struct sk_buff * skb,u32 upld_typ)1618 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1619 struct sk_buff *skb, u32 upld_typ)
1620 {
1621 u8 *cmd_buf;
1622 u16 pkt_len;
1623 struct mwifiex_rxinfo *rx_info;
1624
1625 pkt_len = get_unaligned_le16(skb->data);
1626
1627 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1628 skb_trim(skb, pkt_len);
1629 skb_pull(skb, adapter->intf_hdr_len);
1630 }
1631
1632 switch (upld_typ) {
1633 case MWIFIEX_TYPE_AGGR_DATA:
1634 mwifiex_dbg(adapter, INFO,
1635 "info: --- Rx: Aggr Data packet ---\n");
1636 rx_info = MWIFIEX_SKB_RXCB(skb);
1637 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1638 if (adapter->rx_work_enabled) {
1639 skb_queue_tail(&adapter->rx_data_q, skb);
1640 atomic_inc(&adapter->rx_pending);
1641 adapter->data_received = true;
1642 } else {
1643 mwifiex_deaggr_sdio_pkt(adapter, skb);
1644 dev_kfree_skb_any(skb);
1645 }
1646 break;
1647
1648 case MWIFIEX_TYPE_DATA:
1649 mwifiex_dbg(adapter, DATA,
1650 "info: --- Rx: Data packet ---\n");
1651 if (adapter->rx_work_enabled) {
1652 skb_queue_tail(&adapter->rx_data_q, skb);
1653 adapter->data_received = true;
1654 atomic_inc(&adapter->rx_pending);
1655 } else {
1656 mwifiex_handle_rx_packet(adapter, skb);
1657 }
1658 break;
1659
1660 case MWIFIEX_TYPE_CMD:
1661 mwifiex_dbg(adapter, CMD,
1662 "info: --- Rx: Cmd Response ---\n");
1663 /* take care of curr_cmd = NULL case */
1664 if (!adapter->curr_cmd) {
1665 cmd_buf = adapter->upld_buf;
1666
1667 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1668 mwifiex_process_sleep_confirm_resp(adapter,
1669 skb->data,
1670 skb->len);
1671
1672 memcpy(cmd_buf, skb->data,
1673 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1674 skb->len));
1675
1676 dev_kfree_skb_any(skb);
1677 } else {
1678 adapter->cmd_resp_received = true;
1679 adapter->curr_cmd->resp_skb = skb;
1680 }
1681 break;
1682
1683 case MWIFIEX_TYPE_EVENT:
1684 mwifiex_dbg(adapter, EVENT,
1685 "info: --- Rx: Event ---\n");
1686 adapter->event_cause = get_unaligned_le32(skb->data);
1687
1688 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1689 memcpy(adapter->event_body,
1690 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1691 skb->len);
1692
1693 /* event cause has been saved to adapter->event_cause */
1694 adapter->event_received = true;
1695 adapter->event_skb = skb;
1696
1697 break;
1698
1699 default:
1700 mwifiex_dbg(adapter, ERROR,
1701 "unknown upload type %#x\n", upld_typ);
1702 dev_kfree_skb_any(skb);
1703 break;
1704 }
1705
1706 return 0;
1707 }
1708
1709 /*
1710 * This function transfers received packets from card to driver, performing
1711 * aggregation if required.
1712 *
1713 * For data received on control port, or if aggregation is disabled, the
1714 * received buffers are uploaded as separate packets. However, if aggregation
1715 * is enabled and required, the buffers are copied onto an aggregation buffer,
1716 * provided there is space left, processed and finally uploaded.
1717 */
mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter * adapter,u16 rx_len,u8 port)1718 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1719 u16 rx_len, u8 port)
1720 {
1721 struct sdio_mmc_card *card = adapter->card;
1722 s32 f_do_rx_aggr = 0;
1723 s32 f_do_rx_cur = 0;
1724 s32 f_aggr_cur = 0;
1725 s32 f_post_aggr_cur = 0;
1726 struct sk_buff *skb_deaggr;
1727 struct sk_buff *skb = NULL;
1728 u32 pkt_len, pkt_type, mport, pind;
1729 u8 *curr_ptr;
1730
1731 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1732 /* Read the command Resp without aggr */
1733 mwifiex_dbg(adapter, CMD,
1734 "info: %s: no aggregation for cmd\t"
1735 "response\n", __func__);
1736
1737 f_do_rx_cur = 1;
1738 goto rx_curr_single;
1739 }
1740
1741 if (!card->mpa_rx.enabled) {
1742 mwifiex_dbg(adapter, WARN,
1743 "info: %s: rx aggregation disabled\n",
1744 __func__);
1745
1746 f_do_rx_cur = 1;
1747 goto rx_curr_single;
1748 }
1749
1750 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1751 card->reg->data_port_mask)) ||
1752 (card->has_control_mask && (card->mp_rd_bitmap &
1753 (~((u32) CTRL_PORT_MASK))))) {
1754 /* Some more data RX pending */
1755 mwifiex_dbg(adapter, INFO,
1756 "info: %s: not last packet\n", __func__);
1757
1758 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1759 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1760 f_aggr_cur = 1;
1761 } else {
1762 /* No room in Aggr buf, do rx aggr now */
1763 f_do_rx_aggr = 1;
1764 f_post_aggr_cur = 1;
1765 }
1766 } else {
1767 /* Rx aggr not in progress */
1768 f_aggr_cur = 1;
1769 }
1770
1771 } else {
1772 /* No more data RX pending */
1773 mwifiex_dbg(adapter, INFO,
1774 "info: %s: last packet\n", __func__);
1775
1776 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1777 f_do_rx_aggr = 1;
1778 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1779 f_aggr_cur = 1;
1780 else
1781 /* No room in Aggr buf, do rx aggr now */
1782 f_do_rx_cur = 1;
1783 } else {
1784 f_do_rx_cur = 1;
1785 }
1786 }
1787
1788 if (f_aggr_cur) {
1789 mwifiex_dbg(adapter, INFO,
1790 "info: current packet aggregation\n");
1791 /* Curr pkt can be aggregated */
1792 mp_rx_aggr_setup(card, rx_len, port);
1793
1794 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1795 mp_rx_aggr_port_limit_reached(card)) {
1796 mwifiex_dbg(adapter, INFO,
1797 "info: %s: aggregated packet\t"
1798 "limit reached\n", __func__);
1799 /* No more pkts allowed in Aggr buf, rx it */
1800 f_do_rx_aggr = 1;
1801 }
1802 }
1803
1804 if (f_do_rx_aggr) {
1805 /* do aggr RX now */
1806 mwifiex_dbg(adapter, DATA,
1807 "info: do_rx_aggr: num of packets: %d\n",
1808 card->mpa_rx.pkt_cnt);
1809
1810 if (card->supports_sdio_new_mode) {
1811 int i;
1812 u32 port_count;
1813
1814 for (i = 0, port_count = 0; i < card->max_ports; i++)
1815 if (card->mpa_rx.ports & BIT(i))
1816 port_count++;
1817
1818 /* Reading data from "start_port + 0" to "start_port +
1819 * port_count -1", so decrease the count by 1
1820 */
1821 port_count--;
1822 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1823 (port_count << 8)) + card->mpa_rx.start_port;
1824 } else {
1825 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1826 (card->mpa_rx.ports << 4)) +
1827 card->mpa_rx.start_port;
1828 }
1829
1830 if (card->mpa_rx.pkt_cnt == 1)
1831 mport = adapter->ioport + card->mpa_rx.start_port;
1832
1833 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1834 card->mpa_rx.buf_len, mport, 1))
1835 goto error;
1836
1837 curr_ptr = card->mpa_rx.buf;
1838
1839 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1840 u32 *len_arr = card->mpa_rx.len_arr;
1841
1842 /* get curr PKT len & type */
1843 pkt_len = get_unaligned_le16(&curr_ptr[0]);
1844 pkt_type = get_unaligned_le16(&curr_ptr[2]);
1845
1846 /* copy pkt to deaggr buf */
1847 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1848 GFP_KERNEL);
1849 if (!skb_deaggr) {
1850 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1851 "drop pkt len=%d type=%d\n",
1852 pkt_len, pkt_type);
1853 curr_ptr += len_arr[pind];
1854 continue;
1855 }
1856
1857 skb_put(skb_deaggr, len_arr[pind]);
1858
1859 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1860 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1861 adapter->sdio_rx_aggr_enable)) &&
1862 (pkt_len <= len_arr[pind])) {
1863
1864 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1865
1866 skb_trim(skb_deaggr, pkt_len);
1867
1868 /* Process de-aggr packet */
1869 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1870 pkt_type);
1871 } else {
1872 mwifiex_dbg(adapter, ERROR,
1873 "drop wrong aggr pkt:\t"
1874 "sdio_single_port_rx_aggr=%d\t"
1875 "type=%d len=%d max_len=%d\n",
1876 adapter->sdio_rx_aggr_enable,
1877 pkt_type, pkt_len, len_arr[pind]);
1878 dev_kfree_skb_any(skb_deaggr);
1879 }
1880 curr_ptr += len_arr[pind];
1881 }
1882 MP_RX_AGGR_BUF_RESET(card);
1883 }
1884
1885 rx_curr_single:
1886 if (f_do_rx_cur) {
1887 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1888 port, rx_len);
1889
1890 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1891 if (!skb) {
1892 mwifiex_dbg(adapter, ERROR,
1893 "single skb allocated fail,\t"
1894 "drop pkt port=%d len=%d\n", port, rx_len);
1895 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1896 card->mpa_rx.buf, rx_len,
1897 adapter->ioport + port))
1898 goto error;
1899 return 0;
1900 }
1901
1902 skb_put(skb, rx_len);
1903
1904 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1905 skb->data, skb->len,
1906 adapter->ioport + port))
1907 goto error;
1908 if (!adapter->sdio_rx_aggr_enable &&
1909 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1910 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1911 "current SDIO RX Aggr not enabled\n",
1912 pkt_type);
1913 dev_kfree_skb_any(skb);
1914 return 0;
1915 }
1916
1917 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1918 }
1919 if (f_post_aggr_cur) {
1920 mwifiex_dbg(adapter, INFO,
1921 "info: current packet aggregation\n");
1922 /* Curr pkt can be aggregated */
1923 mp_rx_aggr_setup(card, rx_len, port);
1924 }
1925
1926 return 0;
1927 error:
1928 if (MP_RX_AGGR_IN_PROGRESS(card))
1929 MP_RX_AGGR_BUF_RESET(card);
1930
1931 if (f_do_rx_cur && skb)
1932 /* Single transfer pending. Free curr buff also */
1933 dev_kfree_skb_any(skb);
1934
1935 return -1;
1936 }
1937
1938 /*
1939 * This function checks the current interrupt status.
1940 *
1941 * The following interrupts are checked and handled by this function -
1942 * - Data sent
1943 * - Command sent
1944 * - Packets received
1945 *
1946 * Since the firmware does not generate download ready interrupt if the
1947 * port updated is command port only, command sent interrupt checking
1948 * should be done manually, and for every SDIO interrupt.
1949 *
1950 * In case of Rx packets received, the packets are uploaded from card to
1951 * host and processed accordingly.
1952 */
mwifiex_process_int_status(struct mwifiex_adapter * adapter)1953 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1954 {
1955 struct sdio_mmc_card *card = adapter->card;
1956 const struct mwifiex_sdio_card_reg *reg = card->reg;
1957 int ret = 0;
1958 u8 sdio_ireg;
1959 struct sk_buff *skb;
1960 u8 port = CTRL_PORT;
1961 u32 len_reg_l, len_reg_u;
1962 u32 rx_blocks;
1963 u16 rx_len;
1964 unsigned long flags;
1965 u32 bitmap;
1966 u8 cr;
1967
1968 spin_lock_irqsave(&adapter->int_lock, flags);
1969 sdio_ireg = adapter->int_status;
1970 adapter->int_status = 0;
1971 spin_unlock_irqrestore(&adapter->int_lock, flags);
1972
1973 if (!sdio_ireg)
1974 return ret;
1975
1976 /* Following interrupt is only for SDIO new mode */
1977 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1978 adapter->cmd_sent = false;
1979
1980 /* Following interrupt is only for SDIO new mode */
1981 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1982 u32 pkt_type;
1983
1984 /* read the len of control packet */
1985 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1986 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1987 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1988 if (rx_len <= adapter->intf_hdr_len ||
1989 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1990 MWIFIEX_RX_DATA_BUF_SIZE)
1991 return -1;
1992 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1993 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1994
1995 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1996 if (!skb)
1997 return -1;
1998
1999 skb_put(skb, rx_len);
2000
2001 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
2002 skb->len, adapter->ioport |
2003 CMD_PORT_SLCT)) {
2004 mwifiex_dbg(adapter, ERROR,
2005 "%s: failed to card_to_host", __func__);
2006 dev_kfree_skb_any(skb);
2007 goto term_cmd;
2008 }
2009
2010 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
2011 (pkt_type != MWIFIEX_TYPE_EVENT))
2012 mwifiex_dbg(adapter, ERROR,
2013 "%s:Received wrong packet on cmd port",
2014 __func__);
2015
2016 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
2017 }
2018
2019 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
2020 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
2021 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
2022 if (card->supports_sdio_new_mode) {
2023 bitmap |=
2024 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
2025 bitmap |=
2026 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
2027 }
2028 card->mp_wr_bitmap = bitmap;
2029
2030 mwifiex_dbg(adapter, INTR,
2031 "int: DNLD: wr_bitmap=0x%x\n",
2032 card->mp_wr_bitmap);
2033 if (adapter->data_sent &&
2034 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
2035 mwifiex_dbg(adapter, INTR,
2036 "info: <--- Tx DONE Interrupt --->\n");
2037 adapter->data_sent = false;
2038 }
2039 }
2040
2041 /* As firmware will not generate download ready interrupt if the port
2042 updated is command port only, cmd_sent should be done for any SDIO
2043 interrupt. */
2044 if (card->has_control_mask && adapter->cmd_sent) {
2045 /* Check if firmware has attach buffer at command port and
2046 update just that in wr_bit_map. */
2047 card->mp_wr_bitmap |=
2048 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
2049 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
2050 adapter->cmd_sent = false;
2051 }
2052
2053 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
2054 adapter->cmd_sent, adapter->data_sent);
2055 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
2056 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
2057 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
2058 if (card->supports_sdio_new_mode) {
2059 bitmap |=
2060 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
2061 bitmap |=
2062 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
2063 }
2064 card->mp_rd_bitmap = bitmap;
2065 mwifiex_dbg(adapter, INTR,
2066 "int: UPLD: rd_bitmap=0x%x\n",
2067 card->mp_rd_bitmap);
2068
2069 while (true) {
2070 ret = mwifiex_get_rd_port(adapter, &port);
2071 if (ret) {
2072 mwifiex_dbg(adapter, INFO,
2073 "info: no more rd_port available\n");
2074 break;
2075 }
2076 len_reg_l = reg->rd_len_p0_l + (port << 1);
2077 len_reg_u = reg->rd_len_p0_u + (port << 1);
2078 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
2079 rx_len |= (u16) card->mp_regs[len_reg_l];
2080 mwifiex_dbg(adapter, INFO,
2081 "info: RX: port=%d rx_len=%u\n",
2082 port, rx_len);
2083 rx_blocks =
2084 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
2085 1) / MWIFIEX_SDIO_BLOCK_SIZE;
2086 if (rx_len <= adapter->intf_hdr_len ||
2087 (card->mpa_rx.enabled &&
2088 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
2089 card->mpa_rx.buf_size))) {
2090 mwifiex_dbg(adapter, ERROR,
2091 "invalid rx_len=%d\n",
2092 rx_len);
2093 return -1;
2094 }
2095
2096 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
2097 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
2098 rx_len);
2099
2100 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
2101 port)) {
2102 mwifiex_dbg(adapter, ERROR,
2103 "card_to_host_mpa failed: int status=%#x\n",
2104 sdio_ireg);
2105 goto term_cmd;
2106 }
2107 }
2108 }
2109
2110 return 0;
2111
2112 term_cmd:
2113 /* terminate cmd */
2114 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
2115 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
2116 else
2117 mwifiex_dbg(adapter, INFO,
2118 "info: CFG reg val = %d\n", cr);
2119
2120 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
2121 mwifiex_dbg(adapter, ERROR,
2122 "write CFG reg failed\n");
2123 else
2124 mwifiex_dbg(adapter, INFO, "info: write success\n");
2125
2126 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
2127 mwifiex_dbg(adapter, ERROR,
2128 "read CFG reg failed\n");
2129 else
2130 mwifiex_dbg(adapter, INFO,
2131 "info: CFG reg val =%x\n", cr);
2132
2133 return -1;
2134 }
2135
2136 /*
2137 * This function aggregates transmission buffers in driver and downloads
2138 * the aggregated packet to card.
2139 *
2140 * The individual packets are aggregated by copying into an aggregation
2141 * buffer and then downloaded to the card. Previous unsent packets in the
2142 * aggregation buffer are pre-copied first before new packets are added.
2143 * Aggregation is done till there is space left in the aggregation buffer,
2144 * or till new packets are available.
2145 *
2146 * The function will only download the packet to the card when aggregation
2147 * stops, otherwise it will just aggregate the packet in aggregation buffer
2148 * and return.
2149 */
mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter * adapter,u8 * payload,u32 pkt_len,u32 port,u32 next_pkt_len)2150 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
2151 u8 *payload, u32 pkt_len, u32 port,
2152 u32 next_pkt_len)
2153 {
2154 struct sdio_mmc_card *card = adapter->card;
2155 int ret = 0;
2156 s32 f_send_aggr_buf = 0;
2157 s32 f_send_cur_buf = 0;
2158 s32 f_precopy_cur_buf = 0;
2159 s32 f_postcopy_cur_buf = 0;
2160 u32 mport;
2161 int index;
2162
2163 if (!card->mpa_tx.enabled ||
2164 (card->has_control_mask && (port == CTRL_PORT)) ||
2165 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
2166 mwifiex_dbg(adapter, WARN,
2167 "info: %s: tx aggregation disabled\n",
2168 __func__);
2169
2170 f_send_cur_buf = 1;
2171 goto tx_curr_single;
2172 }
2173
2174 if (next_pkt_len) {
2175 /* More pkt in TX queue */
2176 mwifiex_dbg(adapter, INFO,
2177 "info: %s: more packets in queue.\n",
2178 __func__);
2179
2180 if (MP_TX_AGGR_IN_PROGRESS(card)) {
2181 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
2182 f_precopy_cur_buf = 1;
2183
2184 if (!(card->mp_wr_bitmap &
2185 (1 << card->curr_wr_port)) ||
2186 !MP_TX_AGGR_BUF_HAS_ROOM(
2187 card, pkt_len + next_pkt_len))
2188 f_send_aggr_buf = 1;
2189 } else {
2190 /* No room in Aggr buf, send it */
2191 f_send_aggr_buf = 1;
2192
2193 if (!(card->mp_wr_bitmap &
2194 (1 << card->curr_wr_port)))
2195 f_send_cur_buf = 1;
2196 else
2197 f_postcopy_cur_buf = 1;
2198 }
2199 } else {
2200 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
2201 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
2202 f_precopy_cur_buf = 1;
2203 else
2204 f_send_cur_buf = 1;
2205 }
2206 } else {
2207 /* Last pkt in TX queue */
2208 mwifiex_dbg(adapter, INFO,
2209 "info: %s: Last packet in Tx Queue.\n",
2210 __func__);
2211
2212 if (MP_TX_AGGR_IN_PROGRESS(card)) {
2213 /* some packs in Aggr buf already */
2214 f_send_aggr_buf = 1;
2215
2216 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
2217 f_precopy_cur_buf = 1;
2218 else
2219 /* No room in Aggr buf, send it */
2220 f_send_cur_buf = 1;
2221 } else {
2222 f_send_cur_buf = 1;
2223 }
2224 }
2225
2226 if (f_precopy_cur_buf) {
2227 mwifiex_dbg(adapter, DATA,
2228 "data: %s: precopy current buffer\n",
2229 __func__);
2230 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
2231
2232 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
2233 mp_tx_aggr_port_limit_reached(card))
2234 /* No more pkts allowed in Aggr buf, send it */
2235 f_send_aggr_buf = 1;
2236 }
2237
2238 if (f_send_aggr_buf) {
2239 mwifiex_dbg(adapter, DATA,
2240 "data: %s: send aggr buffer: %d %d\n",
2241 __func__, card->mpa_tx.start_port,
2242 card->mpa_tx.ports);
2243 if (card->supports_sdio_new_mode) {
2244 u32 port_count;
2245 int i;
2246
2247 for (i = 0, port_count = 0; i < card->max_ports; i++)
2248 if (card->mpa_tx.ports & BIT(i))
2249 port_count++;
2250
2251 /* Writing data from "start_port + 0" to "start_port +
2252 * port_count -1", so decrease the count by 1
2253 */
2254 port_count--;
2255 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
2256 (port_count << 8)) + card->mpa_tx.start_port;
2257 } else {
2258 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
2259 (card->mpa_tx.ports << 4)) +
2260 card->mpa_tx.start_port;
2261 }
2262
2263 if (card->mpa_tx.pkt_cnt == 1)
2264 mport = adapter->ioport + card->mpa_tx.start_port;
2265
2266 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
2267 card->mpa_tx.buf_len, mport);
2268
2269 /* Save the last multi port tx aggregation info to debug log. */
2270 index = adapter->dbg.last_sdio_mp_index;
2271 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
2272 adapter->dbg.last_sdio_mp_index = index;
2273 adapter->dbg.last_mp_wr_ports[index] = mport;
2274 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
2275 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
2276 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
2277
2278 MP_TX_AGGR_BUF_RESET(card);
2279 }
2280
2281 tx_curr_single:
2282 if (f_send_cur_buf) {
2283 mwifiex_dbg(adapter, DATA,
2284 "data: %s: send current buffer %d\n",
2285 __func__, port);
2286 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
2287 adapter->ioport + port);
2288 }
2289
2290 if (f_postcopy_cur_buf) {
2291 mwifiex_dbg(adapter, DATA,
2292 "data: %s: postcopy current buffer\n",
2293 __func__);
2294 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
2295 }
2296
2297 return ret;
2298 }
2299
2300 /*
2301 * This function downloads data from driver to card.
2302 *
2303 * Both commands and data packets are transferred to the card by this
2304 * function.
2305 *
2306 * This function adds the SDIO specific header to the front of the buffer
2307 * before transferring. The header contains the length of the packet and
2308 * the type. The firmware handles the packets based upon this set type.
2309 */
mwifiex_sdio_host_to_card(struct mwifiex_adapter * adapter,u8 type,struct sk_buff * skb,struct mwifiex_tx_param * tx_param)2310 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
2311 u8 type, struct sk_buff *skb,
2312 struct mwifiex_tx_param *tx_param)
2313 {
2314 struct sdio_mmc_card *card = adapter->card;
2315 int ret;
2316 u32 buf_block_len;
2317 u32 blk_size;
2318 u32 port = CTRL_PORT;
2319 u8 *payload = (u8 *)skb->data;
2320 u32 pkt_len = skb->len;
2321
2322 /* Allocate buffer and copy payload */
2323 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
2324 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
2325 put_unaligned_le16((u16)pkt_len, payload + 0);
2326 put_unaligned_le16((u32)type, payload + 2);
2327
2328
2329 /*
2330 * This is SDIO specific header
2331 * u16 length,
2332 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
2333 * MWIFIEX_TYPE_EVENT = 3)
2334 */
2335 if (type == MWIFIEX_TYPE_DATA) {
2336 ret = mwifiex_get_wr_port_data(adapter, &port);
2337 if (ret) {
2338 mwifiex_dbg(adapter, ERROR,
2339 "%s: no wr_port available\n",
2340 __func__);
2341 return ret;
2342 }
2343 } else {
2344 adapter->cmd_sent = true;
2345 /* Type must be MWIFIEX_TYPE_CMD */
2346
2347 if (pkt_len <= adapter->intf_hdr_len ||
2348 pkt_len > MWIFIEX_UPLD_SIZE)
2349 mwifiex_dbg(adapter, ERROR,
2350 "%s: payload=%p, nb=%d\n",
2351 __func__, payload, pkt_len);
2352
2353 if (card->supports_sdio_new_mode)
2354 port = CMD_PORT_SLCT;
2355 }
2356
2357 /* Transfer data to card */
2358 pkt_len = buf_block_len * blk_size;
2359
2360 if (tx_param)
2361 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
2362 port, tx_param->next_pkt_len
2363 );
2364 else
2365 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
2366 port, 0);
2367
2368 if (ret) {
2369 if (type == MWIFIEX_TYPE_CMD)
2370 adapter->cmd_sent = false;
2371 if (type == MWIFIEX_TYPE_DATA) {
2372 adapter->data_sent = false;
2373 /* restore curr_wr_port in error cases */
2374 card->curr_wr_port = port;
2375 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
2376 }
2377 } else {
2378 if (type == MWIFIEX_TYPE_DATA) {
2379 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
2380 adapter->data_sent = true;
2381 else
2382 adapter->data_sent = false;
2383 }
2384 }
2385
2386 return ret;
2387 }
2388
2389 /*
2390 * This function allocates the MPA Tx and Rx buffers.
2391 */
mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter * adapter,u32 mpa_tx_buf_size,u32 mpa_rx_buf_size)2392 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
2393 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
2394 {
2395 struct sdio_mmc_card *card = adapter->card;
2396 u32 rx_buf_size;
2397 int ret = 0;
2398
2399 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
2400 if (!card->mpa_tx.buf) {
2401 ret = -1;
2402 goto error;
2403 }
2404
2405 card->mpa_tx.buf_size = mpa_tx_buf_size;
2406
2407 rx_buf_size = max_t(u32, mpa_rx_buf_size,
2408 (u32)SDIO_MAX_AGGR_BUF_SIZE);
2409 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
2410 if (!card->mpa_rx.buf) {
2411 ret = -1;
2412 goto error;
2413 }
2414
2415 card->mpa_rx.buf_size = rx_buf_size;
2416
2417 error:
2418 if (ret) {
2419 kfree(card->mpa_tx.buf);
2420 kfree(card->mpa_rx.buf);
2421 card->mpa_tx.buf_size = 0;
2422 card->mpa_rx.buf_size = 0;
2423 card->mpa_tx.buf = NULL;
2424 card->mpa_rx.buf = NULL;
2425 }
2426
2427 return ret;
2428 }
2429
2430 /*
2431 * This function unregisters the SDIO device.
2432 *
2433 * The SDIO IRQ is released, the function is disabled and driver
2434 * data is set to null.
2435 */
2436 static void
mwifiex_unregister_dev(struct mwifiex_adapter * adapter)2437 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
2438 {
2439 struct sdio_mmc_card *card = adapter->card;
2440
2441 if (adapter->card) {
2442 card->adapter = NULL;
2443 sdio_claim_host(card->func);
2444 sdio_disable_func(card->func);
2445 sdio_release_host(card->func);
2446 }
2447 }
2448
2449 /*
2450 * This function registers the SDIO device.
2451 *
2452 * SDIO IRQ is claimed, block size is set and driver data is initialized.
2453 */
mwifiex_register_dev(struct mwifiex_adapter * adapter)2454 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
2455 {
2456 int ret;
2457 struct sdio_mmc_card *card = adapter->card;
2458 struct sdio_func *func = card->func;
2459 const char *firmware = card->firmware;
2460
2461 /* save adapter pointer in card */
2462 card->adapter = adapter;
2463 adapter->tx_buf_size = card->tx_buf_size;
2464
2465 sdio_claim_host(func);
2466
2467 /* Set block size */
2468 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2469 sdio_release_host(func);
2470 if (ret) {
2471 mwifiex_dbg(adapter, ERROR,
2472 "cannot set SDIO block size\n");
2473 return ret;
2474 }
2475
2476 /* Select correct firmware (sdsd or sdiouart) firmware based on the strapping
2477 * option
2478 */
2479 if (card->firmware_sdiouart) {
2480 u8 val;
2481
2482 mwifiex_read_reg(adapter, card->reg->host_strap_reg, &val);
2483 if ((val & card->reg->host_strap_mask) == card->reg->host_strap_value)
2484 firmware = card->firmware_sdiouart;
2485 }
2486 strcpy(adapter->fw_name, firmware);
2487
2488 if (card->fw_dump_enh) {
2489 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2490 adapter->num_mem_types = 1;
2491 } else {
2492 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2493 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2494 }
2495
2496 return 0;
2497 }
2498
2499 /*
2500 * This function initializes the SDIO driver.
2501 *
2502 * The following initializations steps are followed -
2503 * - Read the Host interrupt status register to acknowledge
2504 * the first interrupt got from bootloader
2505 * - Disable host interrupt mask register
2506 * - Get SDIO port
2507 * - Initialize SDIO variables in card
2508 * - Allocate MP registers
2509 * - Allocate MPA Tx and Rx buffers
2510 */
mwifiex_init_sdio(struct mwifiex_adapter * adapter)2511 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2512 {
2513 struct sdio_mmc_card *card = adapter->card;
2514 const struct mwifiex_sdio_card_reg *reg = card->reg;
2515 int ret;
2516 u8 sdio_ireg;
2517
2518 sdio_set_drvdata(card->func, card);
2519
2520 /*
2521 * Read the host_int_status_reg for ACK the first interrupt got
2522 * from the bootloader. If we don't do this we get a interrupt
2523 * as soon as we register the irq.
2524 */
2525 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2526
2527 /* Get SDIO ioport */
2528 if (mwifiex_init_sdio_ioport(adapter))
2529 return -EIO;
2530
2531 /* Initialize SDIO variables in card */
2532 card->mp_rd_bitmap = 0;
2533 card->mp_wr_bitmap = 0;
2534 card->curr_rd_port = reg->start_rd_port;
2535 card->curr_wr_port = reg->start_wr_port;
2536
2537 card->mp_data_port_mask = reg->data_port_mask;
2538
2539 card->mpa_tx.buf_len = 0;
2540 card->mpa_tx.pkt_cnt = 0;
2541 card->mpa_tx.start_port = 0;
2542
2543 card->mpa_tx.enabled = 1;
2544 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2545
2546 card->mpa_rx.buf_len = 0;
2547 card->mpa_rx.pkt_cnt = 0;
2548 card->mpa_rx.start_port = 0;
2549
2550 card->mpa_rx.enabled = 1;
2551 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2552
2553 /* Allocate buffers for SDIO MP-A */
2554 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2555 if (!card->mp_regs)
2556 return -ENOMEM;
2557
2558 /* Allocate skb pointer buffers */
2559 card->mpa_rx.skb_arr = kcalloc(card->mp_agg_pkt_limit, sizeof(void *),
2560 GFP_KERNEL);
2561 if (!card->mpa_rx.skb_arr) {
2562 kfree(card->mp_regs);
2563 return -ENOMEM;
2564 }
2565
2566 card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit,
2567 sizeof(*card->mpa_rx.len_arr),
2568 GFP_KERNEL);
2569 if (!card->mpa_rx.len_arr) {
2570 kfree(card->mp_regs);
2571 kfree(card->mpa_rx.skb_arr);
2572 return -ENOMEM;
2573 }
2574
2575 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2576 card->mp_tx_agg_buf_size,
2577 card->mp_rx_agg_buf_size);
2578
2579 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2580 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2581 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2582 /* Disable rx single port aggregation */
2583 adapter->host_disable_sdio_rx_aggr = true;
2584
2585 ret = mwifiex_alloc_sdio_mpa_buffers
2586 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2587 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2588 if (ret) {
2589 /* Disable multi port aggregation */
2590 card->mpa_tx.enabled = 0;
2591 card->mpa_rx.enabled = 0;
2592 }
2593 }
2594
2595 adapter->auto_tdls = card->can_auto_tdls;
2596 adapter->ext_scan = card->can_ext_scan;
2597 return 0;
2598 }
2599
2600 /*
2601 * This function resets the MPA Tx and Rx buffers.
2602 */
mwifiex_cleanup_mpa_buf(struct mwifiex_adapter * adapter)2603 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2604 {
2605 struct sdio_mmc_card *card = adapter->card;
2606
2607 MP_TX_AGGR_BUF_RESET(card);
2608 MP_RX_AGGR_BUF_RESET(card);
2609 }
2610
2611 /*
2612 * This function cleans up the allocated card buffers.
2613 *
2614 * The following are freed by this function -
2615 * - MP registers
2616 * - MPA Tx buffer
2617 * - MPA Rx buffer
2618 */
mwifiex_cleanup_sdio(struct mwifiex_adapter * adapter)2619 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2620 {
2621 struct sdio_mmc_card *card = adapter->card;
2622
2623 cancel_work_sync(&card->work);
2624
2625 kfree(card->mp_regs);
2626 kfree(card->mpa_rx.skb_arr);
2627 kfree(card->mpa_rx.len_arr);
2628 kfree(card->mpa_tx.buf);
2629 kfree(card->mpa_rx.buf);
2630 }
2631
2632 /*
2633 * This function updates the MP end port in card.
2634 */
2635 static void
mwifiex_update_mp_end_port(struct mwifiex_adapter * adapter,u16 port)2636 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2637 {
2638 struct sdio_mmc_card *card = adapter->card;
2639 const struct mwifiex_sdio_card_reg *reg = card->reg;
2640 int i;
2641
2642 card->mp_end_port = port;
2643
2644 card->mp_data_port_mask = reg->data_port_mask;
2645
2646 if (reg->start_wr_port) {
2647 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2648 card->mp_data_port_mask &=
2649 ~(1 << (card->max_ports - i));
2650 }
2651
2652 card->curr_wr_port = reg->start_wr_port;
2653
2654 mwifiex_dbg(adapter, CMD,
2655 "cmd: mp_end_port %d, data port mask 0x%x\n",
2656 port, card->mp_data_port_mask);
2657 }
2658
mwifiex_sdio_card_reset_work(struct mwifiex_adapter * adapter)2659 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2660 {
2661 struct sdio_mmc_card *card = adapter->card;
2662 struct sdio_func *func = card->func;
2663 int ret;
2664
2665 /* Prepare the adapter for the reset. */
2666 mwifiex_shutdown_sw(adapter);
2667 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags);
2668 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags);
2669
2670 /* Run a HW reset of the SDIO interface. */
2671 sdio_claim_host(func);
2672 ret = mmc_hw_reset(func->card);
2673 sdio_release_host(func);
2674
2675 switch (ret) {
2676 case 1:
2677 dev_dbg(&func->dev, "SDIO HW reset asynchronous\n");
2678 complete_all(adapter->fw_done);
2679 break;
2680 case 0:
2681 ret = mwifiex_reinit_sw(adapter);
2682 if (ret)
2683 dev_err(&func->dev, "reinit failed: %d\n", ret);
2684 break;
2685 default:
2686 dev_err(&func->dev, "SDIO HW reset failed: %d\n", ret);
2687 break;
2688 }
2689 }
2690
2691 /* This function read/write firmware */
2692 static enum
mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter * adapter,u8 doneflag)2693 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2694 u8 doneflag)
2695 {
2696 struct sdio_mmc_card *card = adapter->card;
2697 int ret, tries;
2698 u8 ctrl_data = 0;
2699
2700 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2701 card->reg->fw_dump_ctrl, &ret);
2702 if (ret) {
2703 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2704 return RDWR_STATUS_FAILURE;
2705 }
2706 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2707 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2708 &ret);
2709 if (ret) {
2710 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2711 return RDWR_STATUS_FAILURE;
2712 }
2713 if (ctrl_data == FW_DUMP_DONE)
2714 break;
2715 if (doneflag && ctrl_data == doneflag)
2716 return RDWR_STATUS_DONE;
2717 if (ctrl_data != card->reg->fw_dump_host_ready) {
2718 mwifiex_dbg(adapter, WARN,
2719 "The ctrl reg was changed, re-try again\n");
2720 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2721 card->reg->fw_dump_ctrl, &ret);
2722 if (ret) {
2723 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2724 return RDWR_STATUS_FAILURE;
2725 }
2726 }
2727 usleep_range(100, 200);
2728 }
2729 if (ctrl_data == card->reg->fw_dump_host_ready) {
2730 mwifiex_dbg(adapter, ERROR,
2731 "Fail to pull ctrl_data\n");
2732 return RDWR_STATUS_FAILURE;
2733 }
2734
2735 return RDWR_STATUS_SUCCESS;
2736 }
2737
2738 /* This function dump firmware memory to file */
mwifiex_sdio_fw_dump(struct mwifiex_adapter * adapter)2739 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2740 {
2741 struct sdio_mmc_card *card = adapter->card;
2742 int ret = 0;
2743 unsigned int reg, reg_start, reg_end;
2744 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2745 enum rdwr_status stat;
2746 u32 memory_size;
2747
2748 if (!card->can_dump_fw)
2749 return;
2750
2751 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2752 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2753
2754 if (entry->mem_ptr) {
2755 vfree(entry->mem_ptr);
2756 entry->mem_ptr = NULL;
2757 }
2758 entry->mem_size = 0;
2759 }
2760
2761 mwifiex_pm_wakeup_card(adapter);
2762 sdio_claim_host(card->func);
2763
2764 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2765
2766 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2767 if (stat == RDWR_STATUS_FAILURE)
2768 goto done;
2769
2770 reg = card->reg->fw_dump_start;
2771 /* Read the number of the memories which will dump */
2772 dump_num = sdio_readb(card->func, reg, &ret);
2773 if (ret) {
2774 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2775 goto done;
2776 }
2777
2778 /* Read the length of every memory which will dump */
2779 for (idx = 0; idx < dump_num; idx++) {
2780 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2781
2782 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2783 if (stat == RDWR_STATUS_FAILURE)
2784 goto done;
2785
2786 memory_size = 0;
2787 reg = card->reg->fw_dump_start;
2788 for (i = 0; i < 4; i++) {
2789 read_reg = sdio_readb(card->func, reg, &ret);
2790 if (ret) {
2791 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2792 goto done;
2793 }
2794 memory_size |= (read_reg << i*8);
2795 reg++;
2796 }
2797
2798 if (memory_size == 0) {
2799 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2800 ret = mwifiex_write_reg(adapter,
2801 card->reg->fw_dump_ctrl,
2802 FW_DUMP_READ_DONE);
2803 if (ret) {
2804 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2805 return;
2806 }
2807 break;
2808 }
2809
2810 mwifiex_dbg(adapter, DUMP,
2811 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2812 entry->mem_ptr = vmalloc(memory_size + 1);
2813 entry->mem_size = memory_size;
2814 if (!entry->mem_ptr) {
2815 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2816 entry->mem_name);
2817 goto done;
2818 }
2819 dbg_ptr = entry->mem_ptr;
2820 end_ptr = dbg_ptr + memory_size;
2821
2822 doneflag = entry->done_flag;
2823 mwifiex_dbg(adapter, DUMP,
2824 "Start %s output, please wait...\n",
2825 entry->mem_name);
2826
2827 do {
2828 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2829 if (stat == RDWR_STATUS_FAILURE)
2830 goto done;
2831
2832 reg_start = card->reg->fw_dump_start;
2833 reg_end = card->reg->fw_dump_end;
2834 for (reg = reg_start; reg <= reg_end; reg++) {
2835 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2836 if (ret) {
2837 mwifiex_dbg(adapter, ERROR,
2838 "SDIO read err\n");
2839 goto done;
2840 }
2841 if (dbg_ptr < end_ptr)
2842 dbg_ptr++;
2843 else
2844 mwifiex_dbg(adapter, ERROR,
2845 "Allocated buf not enough\n");
2846 }
2847
2848 if (stat != RDWR_STATUS_DONE)
2849 continue;
2850
2851 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2852 entry->mem_name, dbg_ptr - entry->mem_ptr);
2853 break;
2854 } while (1);
2855 }
2856 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2857
2858 done:
2859 sdio_release_host(card->func);
2860 }
2861
mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter * adapter)2862 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2863 {
2864 struct sdio_mmc_card *card = adapter->card;
2865 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2866 unsigned int reg, reg_start, reg_end;
2867 u8 start_flag = 0, done_flag = 0;
2868 u8 *dbg_ptr, *end_ptr;
2869 enum rdwr_status stat;
2870 int ret = -1, tries;
2871
2872 if (!card->fw_dump_enh)
2873 return;
2874
2875 if (entry->mem_ptr) {
2876 vfree(entry->mem_ptr);
2877 entry->mem_ptr = NULL;
2878 }
2879 entry->mem_size = 0;
2880
2881 mwifiex_pm_wakeup_card(adapter);
2882 sdio_claim_host(card->func);
2883
2884 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2885
2886 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2887 if (stat == RDWR_STATUS_FAILURE)
2888 goto done;
2889
2890 reg_start = card->reg->fw_dump_start;
2891 reg_end = card->reg->fw_dump_end;
2892 for (reg = reg_start; reg <= reg_end; reg++) {
2893 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2894 start_flag = sdio_readb(card->func, reg, &ret);
2895 if (ret) {
2896 mwifiex_dbg(adapter, ERROR,
2897 "SDIO read err\n");
2898 goto done;
2899 }
2900 if (start_flag == 0)
2901 break;
2902 if (tries == MAX_POLL_TRIES) {
2903 mwifiex_dbg(adapter, ERROR,
2904 "FW not ready to dump\n");
2905 ret = -1;
2906 goto done;
2907 }
2908 }
2909 usleep_range(100, 200);
2910 }
2911
2912 entry->mem_ptr = vmalloc(0xf0000 + 1);
2913 if (!entry->mem_ptr) {
2914 ret = -1;
2915 goto done;
2916 }
2917 dbg_ptr = entry->mem_ptr;
2918 entry->mem_size = 0xf0000;
2919 end_ptr = dbg_ptr + entry->mem_size;
2920
2921 done_flag = entry->done_flag;
2922 mwifiex_dbg(adapter, DUMP,
2923 "Start %s output, please wait...\n", entry->mem_name);
2924
2925 while (true) {
2926 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2927 if (stat == RDWR_STATUS_FAILURE)
2928 goto done;
2929 for (reg = reg_start; reg <= reg_end; reg++) {
2930 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2931 if (ret) {
2932 mwifiex_dbg(adapter, ERROR,
2933 "SDIO read err\n");
2934 goto done;
2935 }
2936 dbg_ptr++;
2937 if (dbg_ptr >= end_ptr) {
2938 u8 *tmp_ptr;
2939
2940 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2941 if (!tmp_ptr)
2942 goto done;
2943
2944 memcpy(tmp_ptr, entry->mem_ptr,
2945 entry->mem_size);
2946 vfree(entry->mem_ptr);
2947 entry->mem_ptr = tmp_ptr;
2948 tmp_ptr = NULL;
2949 dbg_ptr = entry->mem_ptr + entry->mem_size;
2950 entry->mem_size += 0x4000;
2951 end_ptr = entry->mem_ptr + entry->mem_size;
2952 }
2953 }
2954 if (stat == RDWR_STATUS_DONE) {
2955 entry->mem_size = dbg_ptr - entry->mem_ptr;
2956 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2957 entry->mem_name, entry->mem_size);
2958 ret = 0;
2959 break;
2960 }
2961 }
2962 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2963
2964 done:
2965 if (ret) {
2966 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2967 if (entry->mem_ptr) {
2968 vfree(entry->mem_ptr);
2969 entry->mem_ptr = NULL;
2970 }
2971 entry->mem_size = 0;
2972 }
2973 sdio_release_host(card->func);
2974 }
2975
mwifiex_sdio_device_dump_work(struct mwifiex_adapter * adapter)2976 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2977 {
2978 struct sdio_mmc_card *card = adapter->card;
2979
2980 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE);
2981 if (!adapter->devdump_data) {
2982 mwifiex_dbg(adapter, ERROR,
2983 "vzalloc devdump data failure!\n");
2984 return;
2985 }
2986
2987 mwifiex_drv_info_dump(adapter);
2988 if (card->fw_dump_enh)
2989 mwifiex_sdio_generic_fw_dump(adapter);
2990 else
2991 mwifiex_sdio_fw_dump(adapter);
2992 mwifiex_prepare_fw_dump_info(adapter);
2993 mwifiex_upload_device_dump(adapter);
2994 }
2995
mwifiex_sdio_work(struct work_struct * work)2996 static void mwifiex_sdio_work(struct work_struct *work)
2997 {
2998 struct sdio_mmc_card *card =
2999 container_of(work, struct sdio_mmc_card, work);
3000
3001 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
3002 &card->work_flags))
3003 mwifiex_sdio_device_dump_work(card->adapter);
3004 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
3005 &card->work_flags))
3006 mwifiex_sdio_card_reset_work(card->adapter);
3007 }
3008
3009 /* This function resets the card */
mwifiex_sdio_card_reset(struct mwifiex_adapter * adapter)3010 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
3011 {
3012 struct sdio_mmc_card *card = adapter->card;
3013
3014 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags))
3015 schedule_work(&card->work);
3016 }
3017
3018 /* This function dumps FW information */
mwifiex_sdio_device_dump(struct mwifiex_adapter * adapter)3019 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
3020 {
3021 struct sdio_mmc_card *card = adapter->card;
3022
3023 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
3024 &card->work_flags))
3025 schedule_work(&card->work);
3026 }
3027
3028 /* Function to dump SDIO function registers and SDIO scratch registers in case
3029 * of FW crash
3030 */
3031 static int
mwifiex_sdio_reg_dump(struct mwifiex_adapter * adapter,char * drv_buf)3032 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
3033 {
3034 char *p = drv_buf;
3035 struct sdio_mmc_card *cardp = adapter->card;
3036 int ret = 0;
3037 u8 count, func, data, index = 0, size = 0;
3038 u8 reg, reg_start, reg_end;
3039 char buf[256], *ptr;
3040
3041 if (!p)
3042 return 0;
3043
3044 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
3045
3046 mwifiex_pm_wakeup_card(adapter);
3047
3048 sdio_claim_host(cardp->func);
3049
3050 for (count = 0; count < 5; count++) {
3051 memset(buf, 0, sizeof(buf));
3052 ptr = buf;
3053
3054 switch (count) {
3055 case 0:
3056 /* Read the registers of SDIO function0 */
3057 func = count;
3058 reg_start = 0;
3059 reg_end = 9;
3060 break;
3061 case 1:
3062 /* Read the registers of SDIO function1 */
3063 func = count;
3064 reg_start = cardp->reg->func1_dump_reg_start;
3065 reg_end = cardp->reg->func1_dump_reg_end;
3066 break;
3067 case 2:
3068 index = 0;
3069 func = 1;
3070 reg_start = cardp->reg->func1_spec_reg_table[index++];
3071 size = cardp->reg->func1_spec_reg_num;
3072 reg_end = cardp->reg->func1_spec_reg_table[size-1];
3073 break;
3074 default:
3075 /* Read the scratch registers of SDIO function1 */
3076 if (count == 4)
3077 mdelay(100);
3078 func = 1;
3079 reg_start = cardp->reg->func1_scratch_reg;
3080 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
3081 }
3082
3083 if (count != 2)
3084 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
3085 func, reg_start, reg_end);
3086 else
3087 ptr += sprintf(ptr, "SDIO Func%d: ", func);
3088
3089 for (reg = reg_start; reg <= reg_end;) {
3090 if (func == 0)
3091 data = sdio_f0_readb(cardp->func, reg, &ret);
3092 else
3093 data = sdio_readb(cardp->func, reg, &ret);
3094
3095 if (count == 2)
3096 ptr += sprintf(ptr, "(%#x) ", reg);
3097 if (!ret) {
3098 ptr += sprintf(ptr, "%02x ", data);
3099 } else {
3100 ptr += sprintf(ptr, "ERR");
3101 break;
3102 }
3103
3104 if (count == 2 && reg < reg_end)
3105 reg = cardp->reg->func1_spec_reg_table[index++];
3106 else
3107 reg++;
3108 }
3109
3110 mwifiex_dbg(adapter, MSG, "%s\n", buf);
3111 p += sprintf(p, "%s\n", buf);
3112 }
3113
3114 sdio_release_host(cardp->func);
3115
3116 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
3117
3118 return p - drv_buf;
3119 }
3120
3121 /* sdio device/function initialization, code is extracted
3122 * from init_if handler and register_dev handler.
3123 */
mwifiex_sdio_up_dev(struct mwifiex_adapter * adapter)3124 static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter)
3125 {
3126 struct sdio_mmc_card *card = adapter->card;
3127 u8 sdio_ireg;
3128
3129 sdio_claim_host(card->func);
3130 sdio_enable_func(card->func);
3131 sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
3132 sdio_release_host(card->func);
3133
3134 /* tx_buf_size might be changed to 3584 by firmware during
3135 * data transfer, we will reset to default size.
3136 */
3137 adapter->tx_buf_size = card->tx_buf_size;
3138
3139 /* Read the host_int_status_reg for ACK the first interrupt got
3140 * from the bootloader. If we don't do this we get a interrupt
3141 * as soon as we register the irq.
3142 */
3143 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
3144
3145 if (mwifiex_init_sdio_ioport(adapter))
3146 dev_err(&card->func->dev, "error enabling SDIO port\n");
3147 }
3148
3149 static struct mwifiex_if_ops sdio_ops = {
3150 .init_if = mwifiex_init_sdio,
3151 .cleanup_if = mwifiex_cleanup_sdio,
3152 .check_fw_status = mwifiex_check_fw_status,
3153 .check_winner_status = mwifiex_check_winner_status,
3154 .prog_fw = mwifiex_prog_fw_w_helper,
3155 .register_dev = mwifiex_register_dev,
3156 .unregister_dev = mwifiex_unregister_dev,
3157 .enable_int = mwifiex_sdio_enable_host_int,
3158 .disable_int = mwifiex_sdio_disable_host_int,
3159 .process_int_status = mwifiex_process_int_status,
3160 .host_to_card = mwifiex_sdio_host_to_card,
3161 .wakeup = mwifiex_pm_wakeup_card,
3162 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
3163
3164 /* SDIO specific */
3165 .update_mp_end_port = mwifiex_update_mp_end_port,
3166 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
3167 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
3168 .event_complete = mwifiex_sdio_event_complete,
3169 .dnld_fw = mwifiex_sdio_dnld_fw,
3170 .card_reset = mwifiex_sdio_card_reset,
3171 .reg_dump = mwifiex_sdio_reg_dump,
3172 .device_dump = mwifiex_sdio_device_dump,
3173 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
3174 .up_dev = mwifiex_sdio_up_dev,
3175 };
3176
3177 module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver);
3178
3179 MODULE_AUTHOR("Marvell International Ltd.");
3180 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
3181 MODULE_VERSION(SDIO_VERSION);
3182 MODULE_LICENSE("GPL v2");
3183 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
3184 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
3185 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
3186 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
3187 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
3188 MODULE_FIRMWARE(SD8977_DEFAULT_FW_NAME);
3189 MODULE_FIRMWARE(SD8978_SDIOUART_FW_NAME);
3190 MODULE_FIRMWARE(SD8987_DEFAULT_FW_NAME);
3191 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
3192 MODULE_FIRMWARE(SD8997_SDIOUART_FW_NAME);
3193
