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Merge tag 'cleanup-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / pcie.c
1 /* Copyright (c) 2014 Broadcom Corporation
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/firmware.h>
19 #include <linux/pci.h>
20 #include <linux/vmalloc.h>
21 #include <linux/delay.h>
22 #include <linux/unaligned/access_ok.h>
23 #include <linux/interrupt.h>
24 #include <linux/bcma/bcma.h>
25 #include <linux/sched.h>
26
27 #include <soc.h>
28 #include <chipcommon.h>
29 #include <brcmu_utils.h>
30 #include <brcmu_wifi.h>
31 #include <brcm_hw_ids.h>
32
33 #include "dhd_dbg.h"
34 #include "dhd_bus.h"
35 #include "commonring.h"
36 #include "msgbuf.h"
37 #include "pcie.h"
38 #include "firmware.h"
39 #include "chip.h"
40
41
42 enum brcmf_pcie_state {
43 BRCMFMAC_PCIE_STATE_DOWN,
44 BRCMFMAC_PCIE_STATE_UP
45 };
46
47
48 #define BRCMF_PCIE_43602_FW_NAME "brcm/brcmfmac43602-pcie.bin"
49 #define BRCMF_PCIE_43602_NVRAM_NAME "brcm/brcmfmac43602-pcie.txt"
50 #define BRCMF_PCIE_4354_FW_NAME "brcm/brcmfmac4354-pcie.bin"
51 #define BRCMF_PCIE_4354_NVRAM_NAME "brcm/brcmfmac4354-pcie.txt"
52 #define BRCMF_PCIE_4356_FW_NAME "brcm/brcmfmac4356-pcie.bin"
53 #define BRCMF_PCIE_4356_NVRAM_NAME "brcm/brcmfmac4356-pcie.txt"
54 #define BRCMF_PCIE_43570_FW_NAME "brcm/brcmfmac43570-pcie.bin"
55 #define BRCMF_PCIE_43570_NVRAM_NAME "brcm/brcmfmac43570-pcie.txt"
56
57 #define BRCMF_PCIE_FW_UP_TIMEOUT 2000 /* msec */
58
59 #define BRCMF_PCIE_TCM_MAP_SIZE (4096 * 1024)
60 #define BRCMF_PCIE_REG_MAP_SIZE (32 * 1024)
61
62 /* backplane addres space accessed by BAR0 */
63 #define BRCMF_PCIE_BAR0_WINDOW 0x80
64 #define BRCMF_PCIE_BAR0_REG_SIZE 0x1000
65 #define BRCMF_PCIE_BAR0_WRAPPERBASE 0x70
66
67 #define BRCMF_PCIE_BAR0_WRAPBASE_DMP_OFFSET 0x1000
68 #define BRCMF_PCIE_BARO_PCIE_ENUM_OFFSET 0x2000
69
70 #define BRCMF_PCIE_ARMCR4REG_BANKIDX 0x40
71 #define BRCMF_PCIE_ARMCR4REG_BANKPDA 0x4C
72
73 #define BRCMF_PCIE_REG_INTSTATUS 0x90
74 #define BRCMF_PCIE_REG_INTMASK 0x94
75 #define BRCMF_PCIE_REG_SBMBX 0x98
76
77 #define BRCMF_PCIE_PCIE2REG_INTMASK 0x24
78 #define BRCMF_PCIE_PCIE2REG_MAILBOXINT 0x48
79 #define BRCMF_PCIE_PCIE2REG_MAILBOXMASK 0x4C
80 #define BRCMF_PCIE_PCIE2REG_CONFIGADDR 0x120
81 #define BRCMF_PCIE_PCIE2REG_CONFIGDATA 0x124
82 #define BRCMF_PCIE_PCIE2REG_H2D_MAILBOX 0x140
83
84 #define BRCMF_PCIE_GENREV1 1
85 #define BRCMF_PCIE_GENREV2 2
86
87 #define BRCMF_PCIE2_INTA 0x01
88 #define BRCMF_PCIE2_INTB 0x02
89
90 #define BRCMF_PCIE_INT_0 0x01
91 #define BRCMF_PCIE_INT_1 0x02
92 #define BRCMF_PCIE_INT_DEF (BRCMF_PCIE_INT_0 | \
93 BRCMF_PCIE_INT_1)
94
95 #define BRCMF_PCIE_MB_INT_FN0_0 0x0100
96 #define BRCMF_PCIE_MB_INT_FN0_1 0x0200
97 #define BRCMF_PCIE_MB_INT_D2H0_DB0 0x10000
98 #define BRCMF_PCIE_MB_INT_D2H0_DB1 0x20000
99 #define BRCMF_PCIE_MB_INT_D2H1_DB0 0x40000
100 #define BRCMF_PCIE_MB_INT_D2H1_DB1 0x80000
101 #define BRCMF_PCIE_MB_INT_D2H2_DB0 0x100000
102 #define BRCMF_PCIE_MB_INT_D2H2_DB1 0x200000
103 #define BRCMF_PCIE_MB_INT_D2H3_DB0 0x400000
104 #define BRCMF_PCIE_MB_INT_D2H3_DB1 0x800000
105
106 #define BRCMF_PCIE_MB_INT_D2H_DB (BRCMF_PCIE_MB_INT_D2H0_DB0 | \
107 BRCMF_PCIE_MB_INT_D2H0_DB1 | \
108 BRCMF_PCIE_MB_INT_D2H1_DB0 | \
109 BRCMF_PCIE_MB_INT_D2H1_DB1 | \
110 BRCMF_PCIE_MB_INT_D2H2_DB0 | \
111 BRCMF_PCIE_MB_INT_D2H2_DB1 | \
112 BRCMF_PCIE_MB_INT_D2H3_DB0 | \
113 BRCMF_PCIE_MB_INT_D2H3_DB1)
114
115 #define BRCMF_PCIE_MIN_SHARED_VERSION 4
116 #define BRCMF_PCIE_MAX_SHARED_VERSION 5
117 #define BRCMF_PCIE_SHARED_VERSION_MASK 0x00FF
118 #define BRCMF_PCIE_SHARED_TXPUSH_SUPPORT 0x4000
119
120 #define BRCMF_PCIE_FLAGS_HTOD_SPLIT 0x4000
121 #define BRCMF_PCIE_FLAGS_DTOH_SPLIT 0x8000
122
123 #define BRCMF_SHARED_MAX_RXBUFPOST_OFFSET 34
124 #define BRCMF_SHARED_RING_BASE_OFFSET 52
125 #define BRCMF_SHARED_RX_DATAOFFSET_OFFSET 36
126 #define BRCMF_SHARED_CONSOLE_ADDR_OFFSET 20
127 #define BRCMF_SHARED_HTOD_MB_DATA_ADDR_OFFSET 40
128 #define BRCMF_SHARED_DTOH_MB_DATA_ADDR_OFFSET 44
129 #define BRCMF_SHARED_RING_INFO_ADDR_OFFSET 48
130 #define BRCMF_SHARED_DMA_SCRATCH_LEN_OFFSET 52
131 #define BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET 56
132 #define BRCMF_SHARED_DMA_RINGUPD_LEN_OFFSET 64
133 #define BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET 68
134
135 #define BRCMF_RING_H2D_RING_COUNT_OFFSET 0
136 #define BRCMF_RING_D2H_RING_COUNT_OFFSET 1
137 #define BRCMF_RING_H2D_RING_MEM_OFFSET 4
138 #define BRCMF_RING_H2D_RING_STATE_OFFSET 8
139
140 #define BRCMF_RING_MEM_BASE_ADDR_OFFSET 8
141 #define BRCMF_RING_MAX_ITEM_OFFSET 4
142 #define BRCMF_RING_LEN_ITEMS_OFFSET 6
143 #define BRCMF_RING_MEM_SZ 16
144 #define BRCMF_RING_STATE_SZ 8
145
146 #define BRCMF_SHARED_RING_H2D_W_IDX_PTR_OFFSET 4
147 #define BRCMF_SHARED_RING_H2D_R_IDX_PTR_OFFSET 8
148 #define BRCMF_SHARED_RING_D2H_W_IDX_PTR_OFFSET 12
149 #define BRCMF_SHARED_RING_D2H_R_IDX_PTR_OFFSET 16
150 #define BRCMF_SHARED_RING_TCM_MEMLOC_OFFSET 0
151 #define BRCMF_SHARED_RING_MAX_SUB_QUEUES 52
152
153 #define BRCMF_DEF_MAX_RXBUFPOST 255
154
155 #define BRCMF_CONSOLE_BUFADDR_OFFSET 8
156 #define BRCMF_CONSOLE_BUFSIZE_OFFSET 12
157 #define BRCMF_CONSOLE_WRITEIDX_OFFSET 16
158
159 #define BRCMF_DMA_D2H_SCRATCH_BUF_LEN 8
160 #define BRCMF_DMA_D2H_RINGUPD_BUF_LEN 1024
161
162 #define BRCMF_D2H_DEV_D3_ACK 0x00000001
163 #define BRCMF_D2H_DEV_DS_ENTER_REQ 0x00000002
164 #define BRCMF_D2H_DEV_DS_EXIT_NOTE 0x00000004
165
166 #define BRCMF_H2D_HOST_D3_INFORM 0x00000001
167 #define BRCMF_H2D_HOST_DS_ACK 0x00000002
168
169 #define BRCMF_PCIE_MBDATA_TIMEOUT 2000
170
171 #define BRCMF_PCIE_CFGREG_STATUS_CMD 0x4
172 #define BRCMF_PCIE_CFGREG_PM_CSR 0x4C
173 #define BRCMF_PCIE_CFGREG_MSI_CAP 0x58
174 #define BRCMF_PCIE_CFGREG_MSI_ADDR_L 0x5C
175 #define BRCMF_PCIE_CFGREG_MSI_ADDR_H 0x60
176 #define BRCMF_PCIE_CFGREG_MSI_DATA 0x64
177 #define BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL 0xBC
178 #define BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL2 0xDC
179 #define BRCMF_PCIE_CFGREG_RBAR_CTRL 0x228
180 #define BRCMF_PCIE_CFGREG_PML1_SUB_CTRL1 0x248
181 #define BRCMF_PCIE_CFGREG_REG_BAR2_CONFIG 0x4E0
182 #define BRCMF_PCIE_CFGREG_REG_BAR3_CONFIG 0x4F4
183 #define BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB 3
184
185
186 MODULE_FIRMWARE(BRCMF_PCIE_43602_FW_NAME);
187 MODULE_FIRMWARE(BRCMF_PCIE_43602_NVRAM_NAME);
188 MODULE_FIRMWARE(BRCMF_PCIE_4354_FW_NAME);
189 MODULE_FIRMWARE(BRCMF_PCIE_4354_NVRAM_NAME);
190 MODULE_FIRMWARE(BRCMF_PCIE_43570_FW_NAME);
191 MODULE_FIRMWARE(BRCMF_PCIE_43570_NVRAM_NAME);
192
193
194 struct brcmf_pcie_console {
195 u32 base_addr;
196 u32 buf_addr;
197 u32 bufsize;
198 u32 read_idx;
199 u8 log_str[256];
200 u8 log_idx;
201 };
202
203 struct brcmf_pcie_shared_info {
204 u32 tcm_base_address;
205 u32 flags;
206 struct brcmf_pcie_ringbuf *commonrings[BRCMF_NROF_COMMON_MSGRINGS];
207 struct brcmf_pcie_ringbuf *flowrings;
208 u16 max_rxbufpost;
209 u32 nrof_flowrings;
210 u32 rx_dataoffset;
211 u32 htod_mb_data_addr;
212 u32 dtoh_mb_data_addr;
213 u32 ring_info_addr;
214 struct brcmf_pcie_console console;
215 void *scratch;
216 dma_addr_t scratch_dmahandle;
217 void *ringupd;
218 dma_addr_t ringupd_dmahandle;
219 };
220
221 struct brcmf_pcie_core_info {
222 u32 base;
223 u32 wrapbase;
224 };
225
226 struct brcmf_pciedev_info {
227 enum brcmf_pcie_state state;
228 bool in_irq;
229 bool irq_requested;
230 struct pci_dev *pdev;
231 char fw_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
232 char nvram_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
233 void __iomem *regs;
234 void __iomem *tcm;
235 u32 tcm_size;
236 u32 ram_base;
237 u32 ram_size;
238 struct brcmf_chip *ci;
239 u32 coreid;
240 u32 generic_corerev;
241 struct brcmf_pcie_shared_info shared;
242 void (*ringbell)(struct brcmf_pciedev_info *devinfo);
243 wait_queue_head_t mbdata_resp_wait;
244 bool mbdata_completed;
245 bool irq_allocated;
246 };
247
248 struct brcmf_pcie_ringbuf {
249 struct brcmf_commonring commonring;
250 dma_addr_t dma_handle;
251 u32 w_idx_addr;
252 u32 r_idx_addr;
253 struct brcmf_pciedev_info *devinfo;
254 u8 id;
255 };
256
257
258 static const u32 brcmf_ring_max_item[BRCMF_NROF_COMMON_MSGRINGS] = {
259 BRCMF_H2D_MSGRING_CONTROL_SUBMIT_MAX_ITEM,
260 BRCMF_H2D_MSGRING_RXPOST_SUBMIT_MAX_ITEM,
261 BRCMF_D2H_MSGRING_CONTROL_COMPLETE_MAX_ITEM,
262 BRCMF_D2H_MSGRING_TX_COMPLETE_MAX_ITEM,
263 BRCMF_D2H_MSGRING_RX_COMPLETE_MAX_ITEM
264 };
265
266 static const u32 brcmf_ring_itemsize[BRCMF_NROF_COMMON_MSGRINGS] = {
267 BRCMF_H2D_MSGRING_CONTROL_SUBMIT_ITEMSIZE,
268 BRCMF_H2D_MSGRING_RXPOST_SUBMIT_ITEMSIZE,
269 BRCMF_D2H_MSGRING_CONTROL_COMPLETE_ITEMSIZE,
270 BRCMF_D2H_MSGRING_TX_COMPLETE_ITEMSIZE,
271 BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE
272 };
273
274
275 /* dma flushing needs implementation for mips and arm platforms. Should
276 * be put in util. Note, this is not real flushing. It is virtual non
277 * cached memory. Only write buffers should have to be drained. Though
278 * this may be different depending on platform......
279 */
280 #define brcmf_dma_flush(addr, len)
281 #define brcmf_dma_invalidate_cache(addr, len)
282
283
284 static u32
285 brcmf_pcie_read_reg32(struct brcmf_pciedev_info *devinfo, u32 reg_offset)
286 {
287 void __iomem *address = devinfo->regs + reg_offset;
288
289 return (ioread32(address));
290 }
291
292
293 static void
294 brcmf_pcie_write_reg32(struct brcmf_pciedev_info *devinfo, u32 reg_offset,
295 u32 value)
296 {
297 void __iomem *address = devinfo->regs + reg_offset;
298
299 iowrite32(value, address);
300 }
301
302
303 static u8
304 brcmf_pcie_read_tcm8(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
305 {
306 void __iomem *address = devinfo->tcm + mem_offset;
307
308 return (ioread8(address));
309 }
310
311
312 static u16
313 brcmf_pcie_read_tcm16(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
314 {
315 void __iomem *address = devinfo->tcm + mem_offset;
316
317 return (ioread16(address));
318 }
319
320
321 static void
322 brcmf_pcie_write_tcm16(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
323 u16 value)
324 {
325 void __iomem *address = devinfo->tcm + mem_offset;
326
327 iowrite16(value, address);
328 }
329
330
331 static u32
332 brcmf_pcie_read_tcm32(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
333 {
334 void __iomem *address = devinfo->tcm + mem_offset;
335
336 return (ioread32(address));
337 }
338
339
340 static void
341 brcmf_pcie_write_tcm32(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
342 u32 value)
343 {
344 void __iomem *address = devinfo->tcm + mem_offset;
345
346 iowrite32(value, address);
347 }
348
349
350 static u32
351 brcmf_pcie_read_ram32(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
352 {
353 void __iomem *addr = devinfo->tcm + devinfo->ci->rambase + mem_offset;
354
355 return (ioread32(addr));
356 }
357
358
359 static void
360 brcmf_pcie_write_ram32(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
361 u32 value)
362 {
363 void __iomem *addr = devinfo->tcm + devinfo->ci->rambase + mem_offset;
364
365 iowrite32(value, addr);
366 }
367
368
369 static void
370 brcmf_pcie_copy_mem_todev(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
371 void *srcaddr, u32 len)
372 {
373 void __iomem *address = devinfo->tcm + mem_offset;
374 __le32 *src32;
375 __le16 *src16;
376 u8 *src8;
377
378 if (((ulong)address & 4) || ((ulong)srcaddr & 4) || (len & 4)) {
379 if (((ulong)address & 2) || ((ulong)srcaddr & 2) || (len & 2)) {
380 src8 = (u8 *)srcaddr;
381 while (len) {
382 iowrite8(*src8, address);
383 address++;
384 src8++;
385 len--;
386 }
387 } else {
388 len = len / 2;
389 src16 = (__le16 *)srcaddr;
390 while (len) {
391 iowrite16(le16_to_cpu(*src16), address);
392 address += 2;
393 src16++;
394 len--;
395 }
396 }
397 } else {
398 len = len / 4;
399 src32 = (__le32 *)srcaddr;
400 while (len) {
401 iowrite32(le32_to_cpu(*src32), address);
402 address += 4;
403 src32++;
404 len--;
405 }
406 }
407 }
408
409
410 #define WRITECC32(devinfo, reg, value) brcmf_pcie_write_reg32(devinfo, \
411 CHIPCREGOFFS(reg), value)
412
413
414 static void
415 brcmf_pcie_select_core(struct brcmf_pciedev_info *devinfo, u16 coreid)
416 {
417 const struct pci_dev *pdev = devinfo->pdev;
418 struct brcmf_core *core;
419 u32 bar0_win;
420
421 core = brcmf_chip_get_core(devinfo->ci, coreid);
422 if (core) {
423 bar0_win = core->base;
424 pci_write_config_dword(pdev, BRCMF_PCIE_BAR0_WINDOW, bar0_win);
425 if (pci_read_config_dword(pdev, BRCMF_PCIE_BAR0_WINDOW,
426 &bar0_win) == 0) {
427 if (bar0_win != core->base) {
428 bar0_win = core->base;
429 pci_write_config_dword(pdev,
430 BRCMF_PCIE_BAR0_WINDOW,
431 bar0_win);
432 }
433 }
434 } else {
435 brcmf_err("Unsupported core selected %x\n", coreid);
436 }
437 }
438
439
440 static void brcmf_pcie_reset_device(struct brcmf_pciedev_info *devinfo)
441 {
442 u16 cfg_offset[] = { BRCMF_PCIE_CFGREG_STATUS_CMD,
443 BRCMF_PCIE_CFGREG_PM_CSR,
444 BRCMF_PCIE_CFGREG_MSI_CAP,
445 BRCMF_PCIE_CFGREG_MSI_ADDR_L,
446 BRCMF_PCIE_CFGREG_MSI_ADDR_H,
447 BRCMF_PCIE_CFGREG_MSI_DATA,
448 BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL2,
449 BRCMF_PCIE_CFGREG_RBAR_CTRL,
450 BRCMF_PCIE_CFGREG_PML1_SUB_CTRL1,
451 BRCMF_PCIE_CFGREG_REG_BAR2_CONFIG,
452 BRCMF_PCIE_CFGREG_REG_BAR3_CONFIG };
453 u32 i;
454 u32 val;
455 u32 lsc;
456
457 if (!devinfo->ci)
458 return;
459
460 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
461 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR,
462 BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL);
463 lsc = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA);
464 val = lsc & (~BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB);
465 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, val);
466
467 brcmf_pcie_select_core(devinfo, BCMA_CORE_CHIPCOMMON);
468 WRITECC32(devinfo, watchdog, 4);
469 msleep(100);
470
471 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
472 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR,
473 BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL);
474 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, lsc);
475
476 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
477 for (i = 0; i < ARRAY_SIZE(cfg_offset); i++) {
478 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR,
479 cfg_offset[i]);
480 val = brcmf_pcie_read_reg32(devinfo,
481 BRCMF_PCIE_PCIE2REG_CONFIGDATA);
482 brcmf_dbg(PCIE, "config offset 0x%04x, value 0x%04x\n",
483 cfg_offset[i], val);
484 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA,
485 val);
486 }
487 }
488
489
490 static void brcmf_pcie_attach(struct brcmf_pciedev_info *devinfo)
491 {
492 u32 config;
493
494 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
495 if (brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_INTMASK) != 0)
496 brcmf_pcie_reset_device(devinfo);
497 /* BAR1 window may not be sized properly */
498 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
499 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR, 0x4e0);
500 config = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA);
501 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, config);
502
503 device_wakeup_enable(&devinfo->pdev->dev);
504 }
505
506
507 static int brcmf_pcie_enter_download_state(struct brcmf_pciedev_info *devinfo)
508 {
509 brcmf_chip_enter_download(devinfo->ci);
510
511 if (devinfo->ci->chip == BRCM_CC_43602_CHIP_ID) {
512 brcmf_pcie_select_core(devinfo, BCMA_CORE_ARM_CR4);
513 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKIDX,
514 5);
515 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKPDA,
516 0);
517 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKIDX,
518 7);
519 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKPDA,
520 0);
521 }
522 return 0;
523 }
524
525
526 static int brcmf_pcie_exit_download_state(struct brcmf_pciedev_info *devinfo,
527 u32 resetintr)
528 {
529 struct brcmf_core *core;
530
531 if (devinfo->ci->chip == BRCM_CC_43602_CHIP_ID) {
532 core = brcmf_chip_get_core(devinfo->ci, BCMA_CORE_INTERNAL_MEM);
533 brcmf_chip_resetcore(core, 0, 0, 0);
534 }
535
536 return !brcmf_chip_exit_download(devinfo->ci, resetintr);
537 }
538
539
540 static void
541 brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)
542 {
543 struct brcmf_pcie_shared_info *shared;
544 u32 addr;
545 u32 cur_htod_mb_data;
546 u32 i;
547
548 shared = &devinfo->shared;
549 addr = shared->htod_mb_data_addr;
550 cur_htod_mb_data = brcmf_pcie_read_tcm32(devinfo, addr);
551
552 if (cur_htod_mb_data != 0)
553 brcmf_dbg(PCIE, "MB transaction is already pending 0x%04x\n",
554 cur_htod_mb_data);
555
556 i = 0;
557 while (cur_htod_mb_data != 0) {
558 msleep(10);
559 i++;
560 if (i > 100)
561 break;
562 cur_htod_mb_data = brcmf_pcie_read_tcm32(devinfo, addr);
563 }
564
565 brcmf_pcie_write_tcm32(devinfo, addr, htod_mb_data);
566 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
567 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
568 }
569
570
571 static void brcmf_pcie_handle_mb_data(struct brcmf_pciedev_info *devinfo)
572 {
573 struct brcmf_pcie_shared_info *shared;
574 u32 addr;
575 u32 dtoh_mb_data;
576
577 shared = &devinfo->shared;
578 addr = shared->dtoh_mb_data_addr;
579 dtoh_mb_data = brcmf_pcie_read_tcm32(devinfo, addr);
580
581 if (!dtoh_mb_data)
582 return;
583
584 brcmf_pcie_write_tcm32(devinfo, addr, 0);
585
586 brcmf_dbg(PCIE, "D2H_MB_DATA: 0x%04x\n", dtoh_mb_data);
587 if (dtoh_mb_data & BRCMF_D2H_DEV_DS_ENTER_REQ) {
588 brcmf_dbg(PCIE, "D2H_MB_DATA: DEEP SLEEP REQ\n");
589 brcmf_pcie_send_mb_data(devinfo, BRCMF_H2D_HOST_DS_ACK);
590 brcmf_dbg(PCIE, "D2H_MB_DATA: sent DEEP SLEEP ACK\n");
591 }
592 if (dtoh_mb_data & BRCMF_D2H_DEV_DS_EXIT_NOTE)
593 brcmf_dbg(PCIE, "D2H_MB_DATA: DEEP SLEEP EXIT\n");
594 if (dtoh_mb_data & BRCMF_D2H_DEV_D3_ACK)
595 brcmf_dbg(PCIE, "D2H_MB_DATA: D3 ACK\n");
596 if (waitqueue_active(&devinfo->mbdata_resp_wait)) {
597 devinfo->mbdata_completed = true;
598 wake_up(&devinfo->mbdata_resp_wait);
599 }
600 }
601
602
603 static void brcmf_pcie_bus_console_init(struct brcmf_pciedev_info *devinfo)
604 {
605 struct brcmf_pcie_shared_info *shared;
606 struct brcmf_pcie_console *console;
607 u32 addr;
608
609 shared = &devinfo->shared;
610 console = &shared->console;
611 addr = shared->tcm_base_address + BRCMF_SHARED_CONSOLE_ADDR_OFFSET;
612 console->base_addr = brcmf_pcie_read_tcm32(devinfo, addr);
613
614 addr = console->base_addr + BRCMF_CONSOLE_BUFADDR_OFFSET;
615 console->buf_addr = brcmf_pcie_read_tcm32(devinfo, addr);
616 addr = console->base_addr + BRCMF_CONSOLE_BUFSIZE_OFFSET;
617 console->bufsize = brcmf_pcie_read_tcm32(devinfo, addr);
618
619 brcmf_dbg(PCIE, "Console: base %x, buf %x, size %d\n",
620 console->base_addr, console->buf_addr, console->bufsize);
621 }
622
623
624 static void brcmf_pcie_bus_console_read(struct brcmf_pciedev_info *devinfo)
625 {
626 struct brcmf_pcie_console *console;
627 u32 addr;
628 u8 ch;
629 u32 newidx;
630
631 console = &devinfo->shared.console;
632 addr = console->base_addr + BRCMF_CONSOLE_WRITEIDX_OFFSET;
633 newidx = brcmf_pcie_read_tcm32(devinfo, addr);
634 while (newidx != console->read_idx) {
635 addr = console->buf_addr + console->read_idx;
636 ch = brcmf_pcie_read_tcm8(devinfo, addr);
637 console->read_idx++;
638 if (console->read_idx == console->bufsize)
639 console->read_idx = 0;
640 if (ch == '\r')
641 continue;
642 console->log_str[console->log_idx] = ch;
643 console->log_idx++;
644 if ((ch != '\n') &&
645 (console->log_idx == (sizeof(console->log_str) - 2))) {
646 ch = '\n';
647 console->log_str[console->log_idx] = ch;
648 console->log_idx++;
649 }
650
651 if (ch == '\n') {
652 console->log_str[console->log_idx] = 0;
653 brcmf_dbg(PCIE, "CONSOLE: %s\n", console->log_str);
654 console->log_idx = 0;
655 }
656 }
657 }
658
659
660 static __used void brcmf_pcie_ringbell_v1(struct brcmf_pciedev_info *devinfo)
661 {
662 u32 reg_value;
663
664 brcmf_dbg(PCIE, "RING !\n");
665 reg_value = brcmf_pcie_read_reg32(devinfo,
666 BRCMF_PCIE_PCIE2REG_MAILBOXINT);
667 reg_value |= BRCMF_PCIE2_INTB;
668 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT,
669 reg_value);
670 }
671
672
673 static void brcmf_pcie_ringbell_v2(struct brcmf_pciedev_info *devinfo)
674 {
675 brcmf_dbg(PCIE, "RING !\n");
676 /* Any arbitrary value will do, lets use 1 */
677 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_H2D_MAILBOX, 1);
678 }
679
680
681 static void brcmf_pcie_intr_disable(struct brcmf_pciedev_info *devinfo)
682 {
683 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1)
684 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_INTMASK,
685 0);
686 else
687 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXMASK,
688 0);
689 }
690
691
692 static void brcmf_pcie_intr_enable(struct brcmf_pciedev_info *devinfo)
693 {
694 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1)
695 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_INTMASK,
696 BRCMF_PCIE_INT_DEF);
697 else
698 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXMASK,
699 BRCMF_PCIE_MB_INT_D2H_DB |
700 BRCMF_PCIE_MB_INT_FN0_0 |
701 BRCMF_PCIE_MB_INT_FN0_1);
702 }
703
704
705 static irqreturn_t brcmf_pcie_quick_check_isr_v1(int irq, void *arg)
706 {
707 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
708 u32 status;
709
710 status = 0;
711 pci_read_config_dword(devinfo->pdev, BRCMF_PCIE_REG_INTSTATUS, &status);
712 if (status) {
713 brcmf_pcie_intr_disable(devinfo);
714 brcmf_dbg(PCIE, "Enter\n");
715 return IRQ_WAKE_THREAD;
716 }
717 return IRQ_NONE;
718 }
719
720
721 static irqreturn_t brcmf_pcie_quick_check_isr_v2(int irq, void *arg)
722 {
723 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
724
725 if (brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT)) {
726 brcmf_pcie_intr_disable(devinfo);
727 brcmf_dbg(PCIE, "Enter\n");
728 return IRQ_WAKE_THREAD;
729 }
730 return IRQ_NONE;
731 }
732
733
734 static irqreturn_t brcmf_pcie_isr_thread_v1(int irq, void *arg)
735 {
736 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
737 const struct pci_dev *pdev = devinfo->pdev;
738 u32 status;
739
740 devinfo->in_irq = true;
741 status = 0;
742 pci_read_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, &status);
743 brcmf_dbg(PCIE, "Enter %x\n", status);
744 if (status) {
745 pci_write_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, status);
746 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
747 brcmf_proto_msgbuf_rx_trigger(&devinfo->pdev->dev);
748 }
749 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
750 brcmf_pcie_intr_enable(devinfo);
751 devinfo->in_irq = false;
752 return IRQ_HANDLED;
753 }
754
755
756 static irqreturn_t brcmf_pcie_isr_thread_v2(int irq, void *arg)
757 {
758 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
759 u32 status;
760
761 devinfo->in_irq = true;
762 status = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT);
763 brcmf_dbg(PCIE, "Enter %x\n", status);
764 if (status) {
765 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT,
766 status);
767 if (status & (BRCMF_PCIE_MB_INT_FN0_0 |
768 BRCMF_PCIE_MB_INT_FN0_1))
769 brcmf_pcie_handle_mb_data(devinfo);
770 if (status & BRCMF_PCIE_MB_INT_D2H_DB) {
771 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
772 brcmf_proto_msgbuf_rx_trigger(
773 &devinfo->pdev->dev);
774 }
775 }
776 brcmf_pcie_bus_console_read(devinfo);
777 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
778 brcmf_pcie_intr_enable(devinfo);
779 devinfo->in_irq = false;
780 return IRQ_HANDLED;
781 }
782
783
784 static int brcmf_pcie_request_irq(struct brcmf_pciedev_info *devinfo)
785 {
786 struct pci_dev *pdev;
787
788 pdev = devinfo->pdev;
789
790 brcmf_pcie_intr_disable(devinfo);
791
792 brcmf_dbg(PCIE, "Enter\n");
793 /* is it a v1 or v2 implementation */
794 devinfo->irq_requested = false;
795 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1) {
796 if (request_threaded_irq(pdev->irq,
797 brcmf_pcie_quick_check_isr_v1,
798 brcmf_pcie_isr_thread_v1,
799 IRQF_SHARED, "brcmf_pcie_intr",
800 devinfo)) {
801 brcmf_err("Failed to request IRQ %d\n", pdev->irq);
802 return -EIO;
803 }
804 } else {
805 if (request_threaded_irq(pdev->irq,
806 brcmf_pcie_quick_check_isr_v2,
807 brcmf_pcie_isr_thread_v2,
808 IRQF_SHARED, "brcmf_pcie_intr",
809 devinfo)) {
810 brcmf_err("Failed to request IRQ %d\n", pdev->irq);
811 return -EIO;
812 }
813 }
814 devinfo->irq_requested = true;
815 devinfo->irq_allocated = true;
816 return 0;
817 }
818
819
820 static void brcmf_pcie_release_irq(struct brcmf_pciedev_info *devinfo)
821 {
822 struct pci_dev *pdev;
823 u32 status;
824 u32 count;
825
826 if (!devinfo->irq_allocated)
827 return;
828
829 pdev = devinfo->pdev;
830
831 brcmf_pcie_intr_disable(devinfo);
832 if (!devinfo->irq_requested)
833 return;
834 devinfo->irq_requested = false;
835 free_irq(pdev->irq, devinfo);
836
837 msleep(50);
838 count = 0;
839 while ((devinfo->in_irq) && (count < 20)) {
840 msleep(50);
841 count++;
842 }
843 if (devinfo->in_irq)
844 brcmf_err("Still in IRQ (processing) !!!\n");
845
846 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1) {
847 status = 0;
848 pci_read_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, &status);
849 pci_write_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, status);
850 } else {
851 status = brcmf_pcie_read_reg32(devinfo,
852 BRCMF_PCIE_PCIE2REG_MAILBOXINT);
853 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT,
854 status);
855 }
856 devinfo->irq_allocated = false;
857 }
858
859
860 static int brcmf_pcie_ring_mb_write_rptr(void *ctx)
861 {
862 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
863 struct brcmf_pciedev_info *devinfo = ring->devinfo;
864 struct brcmf_commonring *commonring = &ring->commonring;
865
866 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
867 return -EIO;
868
869 brcmf_dbg(PCIE, "W r_ptr %d (%d), ring %d\n", commonring->r_ptr,
870 commonring->w_ptr, ring->id);
871
872 brcmf_pcie_write_tcm16(devinfo, ring->r_idx_addr, commonring->r_ptr);
873
874 return 0;
875 }
876
877
878 static int brcmf_pcie_ring_mb_write_wptr(void *ctx)
879 {
880 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
881 struct brcmf_pciedev_info *devinfo = ring->devinfo;
882 struct brcmf_commonring *commonring = &ring->commonring;
883
884 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
885 return -EIO;
886
887 brcmf_dbg(PCIE, "W w_ptr %d (%d), ring %d\n", commonring->w_ptr,
888 commonring->r_ptr, ring->id);
889
890 brcmf_pcie_write_tcm16(devinfo, ring->w_idx_addr, commonring->w_ptr);
891
892 return 0;
893 }
894
895
896 static int brcmf_pcie_ring_mb_ring_bell(void *ctx)
897 {
898 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
899 struct brcmf_pciedev_info *devinfo = ring->devinfo;
900
901 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
902 return -EIO;
903
904 devinfo->ringbell(devinfo);
905
906 return 0;
907 }
908
909
910 static int brcmf_pcie_ring_mb_update_rptr(void *ctx)
911 {
912 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
913 struct brcmf_pciedev_info *devinfo = ring->devinfo;
914 struct brcmf_commonring *commonring = &ring->commonring;
915
916 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
917 return -EIO;
918
919 commonring->r_ptr = brcmf_pcie_read_tcm16(devinfo, ring->r_idx_addr);
920
921 brcmf_dbg(PCIE, "R r_ptr %d (%d), ring %d\n", commonring->r_ptr,
922 commonring->w_ptr, ring->id);
923
924 return 0;
925 }
926
927
928 static int brcmf_pcie_ring_mb_update_wptr(void *ctx)
929 {
930 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
931 struct brcmf_pciedev_info *devinfo = ring->devinfo;
932 struct brcmf_commonring *commonring = &ring->commonring;
933
934 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
935 return -EIO;
936
937 commonring->w_ptr = brcmf_pcie_read_tcm16(devinfo, ring->w_idx_addr);
938
939 brcmf_dbg(PCIE, "R w_ptr %d (%d), ring %d\n", commonring->w_ptr,
940 commonring->r_ptr, ring->id);
941
942 return 0;
943 }
944
945
946 static void *
947 brcmf_pcie_init_dmabuffer_for_device(struct brcmf_pciedev_info *devinfo,
948 u32 size, u32 tcm_dma_phys_addr,
949 dma_addr_t *dma_handle)
950 {
951 void *ring;
952 long long address;
953
954 ring = dma_alloc_coherent(&devinfo->pdev->dev, size, dma_handle,
955 GFP_KERNEL);
956 if (!ring)
957 return NULL;
958
959 address = (long long)(long)*dma_handle;
960 brcmf_pcie_write_tcm32(devinfo, tcm_dma_phys_addr,
961 address & 0xffffffff);
962 brcmf_pcie_write_tcm32(devinfo, tcm_dma_phys_addr + 4, address >> 32);
963
964 memset(ring, 0, size);
965
966 return (ring);
967 }
968
969
970 static struct brcmf_pcie_ringbuf *
971 brcmf_pcie_alloc_dma_and_ring(struct brcmf_pciedev_info *devinfo, u32 ring_id,
972 u32 tcm_ring_phys_addr)
973 {
974 void *dma_buf;
975 dma_addr_t dma_handle;
976 struct brcmf_pcie_ringbuf *ring;
977 u32 size;
978 u32 addr;
979
980 size = brcmf_ring_max_item[ring_id] * brcmf_ring_itemsize[ring_id];
981 dma_buf = brcmf_pcie_init_dmabuffer_for_device(devinfo, size,
982 tcm_ring_phys_addr + BRCMF_RING_MEM_BASE_ADDR_OFFSET,
983 &dma_handle);
984 if (!dma_buf)
985 return NULL;
986
987 addr = tcm_ring_phys_addr + BRCMF_RING_MAX_ITEM_OFFSET;
988 brcmf_pcie_write_tcm16(devinfo, addr, brcmf_ring_max_item[ring_id]);
989 addr = tcm_ring_phys_addr + BRCMF_RING_LEN_ITEMS_OFFSET;
990 brcmf_pcie_write_tcm16(devinfo, addr, brcmf_ring_itemsize[ring_id]);
991
992 ring = kzalloc(sizeof(*ring), GFP_KERNEL);
993 if (!ring) {
994 dma_free_coherent(&devinfo->pdev->dev, size, dma_buf,
995 dma_handle);
996 return NULL;
997 }
998 brcmf_commonring_config(&ring->commonring, brcmf_ring_max_item[ring_id],
999 brcmf_ring_itemsize[ring_id], dma_buf);
1000 ring->dma_handle = dma_handle;
1001 ring->devinfo = devinfo;
1002 brcmf_commonring_register_cb(&ring->commonring,
1003 brcmf_pcie_ring_mb_ring_bell,
1004 brcmf_pcie_ring_mb_update_rptr,
1005 brcmf_pcie_ring_mb_update_wptr,
1006 brcmf_pcie_ring_mb_write_rptr,
1007 brcmf_pcie_ring_mb_write_wptr, ring);
1008
1009 return (ring);
1010 }
1011
1012
1013 static void brcmf_pcie_release_ringbuffer(struct device *dev,
1014 struct brcmf_pcie_ringbuf *ring)
1015 {
1016 void *dma_buf;
1017 u32 size;
1018
1019 if (!ring)
1020 return;
1021
1022 dma_buf = ring->commonring.buf_addr;
1023 if (dma_buf) {
1024 size = ring->commonring.depth * ring->commonring.item_len;
1025 dma_free_coherent(dev, size, dma_buf, ring->dma_handle);
1026 }
1027 kfree(ring);
1028 }
1029
1030
1031 static void brcmf_pcie_release_ringbuffers(struct brcmf_pciedev_info *devinfo)
1032 {
1033 u32 i;
1034
1035 for (i = 0; i < BRCMF_NROF_COMMON_MSGRINGS; i++) {
1036 brcmf_pcie_release_ringbuffer(&devinfo->pdev->dev,
1037 devinfo->shared.commonrings[i]);
1038 devinfo->shared.commonrings[i] = NULL;
1039 }
1040 kfree(devinfo->shared.flowrings);
1041 devinfo->shared.flowrings = NULL;
1042 }
1043
1044
1045 static int brcmf_pcie_init_ringbuffers(struct brcmf_pciedev_info *devinfo)
1046 {
1047 struct brcmf_pcie_ringbuf *ring;
1048 struct brcmf_pcie_ringbuf *rings;
1049 u32 ring_addr;
1050 u32 d2h_w_idx_ptr;
1051 u32 d2h_r_idx_ptr;
1052 u32 h2d_w_idx_ptr;
1053 u32 h2d_r_idx_ptr;
1054 u32 addr;
1055 u32 ring_mem_ptr;
1056 u32 i;
1057 u16 max_sub_queues;
1058
1059 ring_addr = devinfo->shared.ring_info_addr;
1060 brcmf_dbg(PCIE, "Base ring addr = 0x%08x\n", ring_addr);
1061
1062 addr = ring_addr + BRCMF_SHARED_RING_D2H_W_IDX_PTR_OFFSET;
1063 d2h_w_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1064 addr = ring_addr + BRCMF_SHARED_RING_D2H_R_IDX_PTR_OFFSET;
1065 d2h_r_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1066 addr = ring_addr + BRCMF_SHARED_RING_H2D_W_IDX_PTR_OFFSET;
1067 h2d_w_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1068 addr = ring_addr + BRCMF_SHARED_RING_H2D_R_IDX_PTR_OFFSET;
1069 h2d_r_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1070
1071 addr = ring_addr + BRCMF_SHARED_RING_TCM_MEMLOC_OFFSET;
1072 ring_mem_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1073
1074 for (i = 0; i < BRCMF_NROF_H2D_COMMON_MSGRINGS; i++) {
1075 ring = brcmf_pcie_alloc_dma_and_ring(devinfo, i, ring_mem_ptr);
1076 if (!ring)
1077 goto fail;
1078 ring->w_idx_addr = h2d_w_idx_ptr;
1079 ring->r_idx_addr = h2d_r_idx_ptr;
1080 ring->id = i;
1081 devinfo->shared.commonrings[i] = ring;
1082
1083 h2d_w_idx_ptr += sizeof(u32);
1084 h2d_r_idx_ptr += sizeof(u32);
1085 ring_mem_ptr += BRCMF_RING_MEM_SZ;
1086 }
1087
1088 for (i = BRCMF_NROF_H2D_COMMON_MSGRINGS;
1089 i < BRCMF_NROF_COMMON_MSGRINGS; i++) {
1090 ring = brcmf_pcie_alloc_dma_and_ring(devinfo, i, ring_mem_ptr);
1091 if (!ring)
1092 goto fail;
1093 ring->w_idx_addr = d2h_w_idx_ptr;
1094 ring->r_idx_addr = d2h_r_idx_ptr;
1095 ring->id = i;
1096 devinfo->shared.commonrings[i] = ring;
1097
1098 d2h_w_idx_ptr += sizeof(u32);
1099 d2h_r_idx_ptr += sizeof(u32);
1100 ring_mem_ptr += BRCMF_RING_MEM_SZ;
1101 }
1102
1103 addr = ring_addr + BRCMF_SHARED_RING_MAX_SUB_QUEUES;
1104 max_sub_queues = brcmf_pcie_read_tcm16(devinfo, addr);
1105 devinfo->shared.nrof_flowrings =
1106 max_sub_queues - BRCMF_NROF_H2D_COMMON_MSGRINGS;
1107 rings = kcalloc(devinfo->shared.nrof_flowrings, sizeof(*ring),
1108 GFP_KERNEL);
1109 if (!rings)
1110 goto fail;
1111
1112 brcmf_dbg(PCIE, "Nr of flowrings is %d\n",
1113 devinfo->shared.nrof_flowrings);
1114
1115 for (i = 0; i < devinfo->shared.nrof_flowrings; i++) {
1116 ring = &rings[i];
1117 ring->devinfo = devinfo;
1118 ring->id = i + BRCMF_NROF_COMMON_MSGRINGS;
1119 brcmf_commonring_register_cb(&ring->commonring,
1120 brcmf_pcie_ring_mb_ring_bell,
1121 brcmf_pcie_ring_mb_update_rptr,
1122 brcmf_pcie_ring_mb_update_wptr,
1123 brcmf_pcie_ring_mb_write_rptr,
1124 brcmf_pcie_ring_mb_write_wptr,
1125 ring);
1126 ring->w_idx_addr = h2d_w_idx_ptr;
1127 ring->r_idx_addr = h2d_r_idx_ptr;
1128 h2d_w_idx_ptr += sizeof(u32);
1129 h2d_r_idx_ptr += sizeof(u32);
1130 }
1131 devinfo->shared.flowrings = rings;
1132
1133 return 0;
1134
1135 fail:
1136 brcmf_err("Allocating commonring buffers failed\n");
1137 brcmf_pcie_release_ringbuffers(devinfo);
1138 return -ENOMEM;
1139 }
1140
1141
1142 static void
1143 brcmf_pcie_release_scratchbuffers(struct brcmf_pciedev_info *devinfo)
1144 {
1145 if (devinfo->shared.scratch)
1146 dma_free_coherent(&devinfo->pdev->dev,
1147 BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
1148 devinfo->shared.scratch,
1149 devinfo->shared.scratch_dmahandle);
1150 if (devinfo->shared.ringupd)
1151 dma_free_coherent(&devinfo->pdev->dev,
1152 BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
1153 devinfo->shared.ringupd,
1154 devinfo->shared.ringupd_dmahandle);
1155 }
1156
1157 static int brcmf_pcie_init_scratchbuffers(struct brcmf_pciedev_info *devinfo)
1158 {
1159 long long address;
1160 u32 addr;
1161
1162 devinfo->shared.scratch = dma_alloc_coherent(&devinfo->pdev->dev,
1163 BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
1164 &devinfo->shared.scratch_dmahandle, GFP_KERNEL);
1165 if (!devinfo->shared.scratch)
1166 goto fail;
1167
1168 memset(devinfo->shared.scratch, 0, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
1169 brcmf_dma_flush(devinfo->shared.scratch, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
1170
1171 addr = devinfo->shared.tcm_base_address +
1172 BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET;
1173 address = (long long)(long)devinfo->shared.scratch_dmahandle;
1174 brcmf_pcie_write_tcm32(devinfo, addr, address & 0xffffffff);
1175 brcmf_pcie_write_tcm32(devinfo, addr + 4, address >> 32);
1176 addr = devinfo->shared.tcm_base_address +
1177 BRCMF_SHARED_DMA_SCRATCH_LEN_OFFSET;
1178 brcmf_pcie_write_tcm32(devinfo, addr, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
1179
1180 devinfo->shared.ringupd = dma_alloc_coherent(&devinfo->pdev->dev,
1181 BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
1182 &devinfo->shared.ringupd_dmahandle, GFP_KERNEL);
1183 if (!devinfo->shared.ringupd)
1184 goto fail;
1185
1186 memset(devinfo->shared.ringupd, 0, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
1187 brcmf_dma_flush(devinfo->shared.ringupd, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
1188
1189 addr = devinfo->shared.tcm_base_address +
1190 BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET;
1191 address = (long long)(long)devinfo->shared.ringupd_dmahandle;
1192 brcmf_pcie_write_tcm32(devinfo, addr, address & 0xffffffff);
1193 brcmf_pcie_write_tcm32(devinfo, addr + 4, address >> 32);
1194 addr = devinfo->shared.tcm_base_address +
1195 BRCMF_SHARED_DMA_RINGUPD_LEN_OFFSET;
1196 brcmf_pcie_write_tcm32(devinfo, addr, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
1197 return 0;
1198
1199 fail:
1200 brcmf_err("Allocating scratch buffers failed\n");
1201 brcmf_pcie_release_scratchbuffers(devinfo);
1202 return -ENOMEM;
1203 }
1204
1205
1206 static void brcmf_pcie_down(struct device *dev)
1207 {
1208 }
1209
1210
1211 static int brcmf_pcie_tx(struct device *dev, struct sk_buff *skb)
1212 {
1213 return 0;
1214 }
1215
1216
1217 static int brcmf_pcie_tx_ctlpkt(struct device *dev, unsigned char *msg,
1218 uint len)
1219 {
1220 return 0;
1221 }
1222
1223
1224 static int brcmf_pcie_rx_ctlpkt(struct device *dev, unsigned char *msg,
1225 uint len)
1226 {
1227 return 0;
1228 }
1229
1230
1231 static struct brcmf_bus_ops brcmf_pcie_bus_ops = {
1232 .txdata = brcmf_pcie_tx,
1233 .stop = brcmf_pcie_down,
1234 .txctl = brcmf_pcie_tx_ctlpkt,
1235 .rxctl = brcmf_pcie_rx_ctlpkt,
1236 };
1237
1238
1239 static int
1240 brcmf_pcie_init_share_ram_info(struct brcmf_pciedev_info *devinfo,
1241 u32 sharedram_addr)
1242 {
1243 struct brcmf_pcie_shared_info *shared;
1244 u32 addr;
1245 u32 version;
1246
1247 shared = &devinfo->shared;
1248 shared->tcm_base_address = sharedram_addr;
1249
1250 shared->flags = brcmf_pcie_read_tcm32(devinfo, sharedram_addr);
1251 version = shared->flags & BRCMF_PCIE_SHARED_VERSION_MASK;
1252 brcmf_dbg(PCIE, "PCIe protocol version %d\n", version);
1253 if ((version > BRCMF_PCIE_MAX_SHARED_VERSION) ||
1254 (version < BRCMF_PCIE_MIN_SHARED_VERSION)) {
1255 brcmf_err("Unsupported PCIE version %d\n", version);
1256 return -EINVAL;
1257 }
1258 if (shared->flags & BRCMF_PCIE_SHARED_TXPUSH_SUPPORT) {
1259 brcmf_err("Unsupported legacy TX mode 0x%x\n",
1260 shared->flags & BRCMF_PCIE_SHARED_TXPUSH_SUPPORT);
1261 return -EINVAL;
1262 }
1263
1264 addr = sharedram_addr + BRCMF_SHARED_MAX_RXBUFPOST_OFFSET;
1265 shared->max_rxbufpost = brcmf_pcie_read_tcm16(devinfo, addr);
1266 if (shared->max_rxbufpost == 0)
1267 shared->max_rxbufpost = BRCMF_DEF_MAX_RXBUFPOST;
1268
1269 addr = sharedram_addr + BRCMF_SHARED_RX_DATAOFFSET_OFFSET;
1270 shared->rx_dataoffset = brcmf_pcie_read_tcm32(devinfo, addr);
1271
1272 addr = sharedram_addr + BRCMF_SHARED_HTOD_MB_DATA_ADDR_OFFSET;
1273 shared->htod_mb_data_addr = brcmf_pcie_read_tcm32(devinfo, addr);
1274
1275 addr = sharedram_addr + BRCMF_SHARED_DTOH_MB_DATA_ADDR_OFFSET;
1276 shared->dtoh_mb_data_addr = brcmf_pcie_read_tcm32(devinfo, addr);
1277
1278 addr = sharedram_addr + BRCMF_SHARED_RING_INFO_ADDR_OFFSET;
1279 shared->ring_info_addr = brcmf_pcie_read_tcm32(devinfo, addr);
1280
1281 brcmf_dbg(PCIE, "max rx buf post %d, rx dataoffset %d\n",
1282 shared->max_rxbufpost, shared->rx_dataoffset);
1283
1284 brcmf_pcie_bus_console_init(devinfo);
1285
1286 return 0;
1287 }
1288
1289
1290 static int brcmf_pcie_get_fwnames(struct brcmf_pciedev_info *devinfo)
1291 {
1292 char *fw_name;
1293 char *nvram_name;
1294 uint fw_len, nv_len;
1295 char end;
1296
1297 brcmf_dbg(PCIE, "Enter, chip 0x%04x chiprev %d\n", devinfo->ci->chip,
1298 devinfo->ci->chiprev);
1299
1300 switch (devinfo->ci->chip) {
1301 case BRCM_CC_43602_CHIP_ID:
1302 fw_name = BRCMF_PCIE_43602_FW_NAME;
1303 nvram_name = BRCMF_PCIE_43602_NVRAM_NAME;
1304 break;
1305 case BRCM_CC_4354_CHIP_ID:
1306 fw_name = BRCMF_PCIE_4354_FW_NAME;
1307 nvram_name = BRCMF_PCIE_4354_NVRAM_NAME;
1308 break;
1309 case BRCM_CC_4356_CHIP_ID:
1310 fw_name = BRCMF_PCIE_4356_FW_NAME;
1311 nvram_name = BRCMF_PCIE_4356_NVRAM_NAME;
1312 break;
1313 case BRCM_CC_43567_CHIP_ID:
1314 case BRCM_CC_43569_CHIP_ID:
1315 case BRCM_CC_43570_CHIP_ID:
1316 fw_name = BRCMF_PCIE_43570_FW_NAME;
1317 nvram_name = BRCMF_PCIE_43570_NVRAM_NAME;
1318 break;
1319 default:
1320 brcmf_err("Unsupported chip 0x%04x\n", devinfo->ci->chip);
1321 return -ENODEV;
1322 }
1323
1324 fw_len = sizeof(devinfo->fw_name) - 1;
1325 nv_len = sizeof(devinfo->nvram_name) - 1;
1326 /* check if firmware path is provided by module parameter */
1327 if (brcmf_firmware_path[0] != '\0') {
1328 strncpy(devinfo->fw_name, brcmf_firmware_path, fw_len);
1329 strncpy(devinfo->nvram_name, brcmf_firmware_path, nv_len);
1330 fw_len -= strlen(devinfo->fw_name);
1331 nv_len -= strlen(devinfo->nvram_name);
1332
1333 end = brcmf_firmware_path[strlen(brcmf_firmware_path) - 1];
1334 if (end != '/') {
1335 strncat(devinfo->fw_name, "/", fw_len);
1336 strncat(devinfo->nvram_name, "/", nv_len);
1337 fw_len--;
1338 nv_len--;
1339 }
1340 }
1341 strncat(devinfo->fw_name, fw_name, fw_len);
1342 strncat(devinfo->nvram_name, nvram_name, nv_len);
1343
1344 return 0;
1345 }
1346
1347
1348 static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo,
1349 const struct firmware *fw, void *nvram,
1350 u32 nvram_len)
1351 {
1352 u32 sharedram_addr;
1353 u32 sharedram_addr_written;
1354 u32 loop_counter;
1355 int err;
1356 u32 address;
1357 u32 resetintr;
1358
1359 devinfo->ringbell = brcmf_pcie_ringbell_v2;
1360 devinfo->generic_corerev = BRCMF_PCIE_GENREV2;
1361
1362 brcmf_dbg(PCIE, "Halt ARM.\n");
1363 err = brcmf_pcie_enter_download_state(devinfo);
1364 if (err)
1365 return err;
1366
1367 brcmf_dbg(PCIE, "Download FW %s\n", devinfo->fw_name);
1368 brcmf_pcie_copy_mem_todev(devinfo, devinfo->ci->rambase,
1369 (void *)fw->data, fw->size);
1370
1371 resetintr = get_unaligned_le32(fw->data);
1372 release_firmware(fw);
1373
1374 /* reset last 4 bytes of RAM address. to be used for shared
1375 * area. This identifies when FW is running
1376 */
1377 brcmf_pcie_write_ram32(devinfo, devinfo->ci->ramsize - 4, 0);
1378
1379 if (nvram) {
1380 brcmf_dbg(PCIE, "Download NVRAM %s\n", devinfo->nvram_name);
1381 address = devinfo->ci->rambase + devinfo->ci->ramsize -
1382 nvram_len;
1383 brcmf_pcie_copy_mem_todev(devinfo, address, nvram, nvram_len);
1384 brcmf_fw_nvram_free(nvram);
1385 } else {
1386 brcmf_dbg(PCIE, "No matching NVRAM file found %s\n",
1387 devinfo->nvram_name);
1388 }
1389
1390 sharedram_addr_written = brcmf_pcie_read_ram32(devinfo,
1391 devinfo->ci->ramsize -
1392 4);
1393 brcmf_dbg(PCIE, "Bring ARM in running state\n");
1394 err = brcmf_pcie_exit_download_state(devinfo, resetintr);
1395 if (err)
1396 return err;
1397
1398 brcmf_dbg(PCIE, "Wait for FW init\n");
1399 sharedram_addr = sharedram_addr_written;
1400 loop_counter = BRCMF_PCIE_FW_UP_TIMEOUT / 50;
1401 while ((sharedram_addr == sharedram_addr_written) && (loop_counter)) {
1402 msleep(50);
1403 sharedram_addr = brcmf_pcie_read_ram32(devinfo,
1404 devinfo->ci->ramsize -
1405 4);
1406 loop_counter--;
1407 }
1408 if (sharedram_addr == sharedram_addr_written) {
1409 brcmf_err("FW failed to initialize\n");
1410 return -ENODEV;
1411 }
1412 brcmf_dbg(PCIE, "Shared RAM addr: 0x%08x\n", sharedram_addr);
1413
1414 return (brcmf_pcie_init_share_ram_info(devinfo, sharedram_addr));
1415 }
1416
1417
1418 static int brcmf_pcie_get_resource(struct brcmf_pciedev_info *devinfo)
1419 {
1420 struct pci_dev *pdev;
1421 int err;
1422 phys_addr_t bar0_addr, bar1_addr;
1423 ulong bar1_size;
1424
1425 pdev = devinfo->pdev;
1426
1427 err = pci_enable_device(pdev);
1428 if (err) {
1429 brcmf_err("pci_enable_device failed err=%d\n", err);
1430 return err;
1431 }
1432
1433 pci_set_master(pdev);
1434
1435 /* Bar-0 mapped address */
1436 bar0_addr = pci_resource_start(pdev, 0);
1437 /* Bar-1 mapped address */
1438 bar1_addr = pci_resource_start(pdev, 2);
1439 /* read Bar-1 mapped memory range */
1440 bar1_size = pci_resource_len(pdev, 2);
1441 if ((bar1_size == 0) || (bar1_addr == 0)) {
1442 brcmf_err("BAR1 Not enabled, device size=%ld, addr=%#016llx\n",
1443 bar1_size, (unsigned long long)bar1_addr);
1444 return -EINVAL;
1445 }
1446
1447 devinfo->regs = ioremap_nocache(bar0_addr, BRCMF_PCIE_REG_MAP_SIZE);
1448 devinfo->tcm = ioremap_nocache(bar1_addr, BRCMF_PCIE_TCM_MAP_SIZE);
1449 devinfo->tcm_size = BRCMF_PCIE_TCM_MAP_SIZE;
1450
1451 if (!devinfo->regs || !devinfo->tcm) {
1452 brcmf_err("ioremap() failed (%p,%p)\n", devinfo->regs,
1453 devinfo->tcm);
1454 return -EINVAL;
1455 }
1456 brcmf_dbg(PCIE, "Phys addr : reg space = %p base addr %#016llx\n",
1457 devinfo->regs, (unsigned long long)bar0_addr);
1458 brcmf_dbg(PCIE, "Phys addr : mem space = %p base addr %#016llx\n",
1459 devinfo->tcm, (unsigned long long)bar1_addr);
1460
1461 return 0;
1462 }
1463
1464
1465 static void brcmf_pcie_release_resource(struct brcmf_pciedev_info *devinfo)
1466 {
1467 if (devinfo->tcm)
1468 iounmap(devinfo->tcm);
1469 if (devinfo->regs)
1470 iounmap(devinfo->regs);
1471
1472 pci_disable_device(devinfo->pdev);
1473 }
1474
1475
1476 static int brcmf_pcie_attach_bus(struct device *dev)
1477 {
1478 int ret;
1479
1480 /* Attach to the common driver interface */
1481 ret = brcmf_attach(dev);
1482 if (ret) {
1483 brcmf_err("brcmf_attach failed\n");
1484 } else {
1485 ret = brcmf_bus_start(dev);
1486 if (ret)
1487 brcmf_err("dongle is not responding\n");
1488 }
1489
1490 return ret;
1491 }
1492
1493
1494 static u32 brcmf_pcie_buscore_prep_addr(const struct pci_dev *pdev, u32 addr)
1495 {
1496 u32 ret_addr;
1497
1498 ret_addr = addr & (BRCMF_PCIE_BAR0_REG_SIZE - 1);
1499 addr &= ~(BRCMF_PCIE_BAR0_REG_SIZE - 1);
1500 pci_write_config_dword(pdev, BRCMF_PCIE_BAR0_WINDOW, addr);
1501
1502 return ret_addr;
1503 }
1504
1505
1506 static u32 brcmf_pcie_buscore_read32(void *ctx, u32 addr)
1507 {
1508 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1509
1510 addr = brcmf_pcie_buscore_prep_addr(devinfo->pdev, addr);
1511 return brcmf_pcie_read_reg32(devinfo, addr);
1512 }
1513
1514
1515 static void brcmf_pcie_buscore_write32(void *ctx, u32 addr, u32 value)
1516 {
1517 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1518
1519 addr = brcmf_pcie_buscore_prep_addr(devinfo->pdev, addr);
1520 brcmf_pcie_write_reg32(devinfo, addr, value);
1521 }
1522
1523
1524 static int brcmf_pcie_buscoreprep(void *ctx)
1525 {
1526 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1527 int err;
1528
1529 err = brcmf_pcie_get_resource(devinfo);
1530 if (err == 0) {
1531 /* Set CC watchdog to reset all the cores on the chip to bring
1532 * back dongle to a sane state.
1533 */
1534 brcmf_pcie_buscore_write32(ctx, CORE_CC_REG(SI_ENUM_BASE,
1535 watchdog), 4);
1536 msleep(100);
1537 }
1538
1539 return err;
1540 }
1541
1542
1543 static void brcmf_pcie_buscore_exitdl(void *ctx, struct brcmf_chip *chip,
1544 u32 rstvec)
1545 {
1546 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1547
1548 brcmf_pcie_write_tcm32(devinfo, 0, rstvec);
1549 }
1550
1551
1552 static const struct brcmf_buscore_ops brcmf_pcie_buscore_ops = {
1553 .prepare = brcmf_pcie_buscoreprep,
1554 .exit_dl = brcmf_pcie_buscore_exitdl,
1555 .read32 = brcmf_pcie_buscore_read32,
1556 .write32 = brcmf_pcie_buscore_write32,
1557 };
1558
1559 static void brcmf_pcie_setup(struct device *dev, const struct firmware *fw,
1560 void *nvram, u32 nvram_len)
1561 {
1562 struct brcmf_bus *bus = dev_get_drvdata(dev);
1563 struct brcmf_pciedev *pcie_bus_dev = bus->bus_priv.pcie;
1564 struct brcmf_pciedev_info *devinfo = pcie_bus_dev->devinfo;
1565 struct brcmf_commonring **flowrings;
1566 int ret;
1567 u32 i;
1568
1569 brcmf_pcie_attach(devinfo);
1570
1571 ret = brcmf_pcie_download_fw_nvram(devinfo, fw, nvram, nvram_len);
1572 if (ret)
1573 goto fail;
1574
1575 devinfo->state = BRCMFMAC_PCIE_STATE_UP;
1576
1577 ret = brcmf_pcie_init_ringbuffers(devinfo);
1578 if (ret)
1579 goto fail;
1580
1581 ret = brcmf_pcie_init_scratchbuffers(devinfo);
1582 if (ret)
1583 goto fail;
1584
1585 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
1586 ret = brcmf_pcie_request_irq(devinfo);
1587 if (ret)
1588 goto fail;
1589
1590 /* hook the commonrings in the bus structure. */
1591 for (i = 0; i < BRCMF_NROF_COMMON_MSGRINGS; i++)
1592 bus->msgbuf->commonrings[i] =
1593 &devinfo->shared.commonrings[i]->commonring;
1594
1595 flowrings = kcalloc(devinfo->shared.nrof_flowrings, sizeof(flowrings),
1596 GFP_KERNEL);
1597 if (!flowrings)
1598 goto fail;
1599
1600 for (i = 0; i < devinfo->shared.nrof_flowrings; i++)
1601 flowrings[i] = &devinfo->shared.flowrings[i].commonring;
1602 bus->msgbuf->flowrings = flowrings;
1603
1604 bus->msgbuf->rx_dataoffset = devinfo->shared.rx_dataoffset;
1605 bus->msgbuf->max_rxbufpost = devinfo->shared.max_rxbufpost;
1606 bus->msgbuf->nrof_flowrings = devinfo->shared.nrof_flowrings;
1607
1608 init_waitqueue_head(&devinfo->mbdata_resp_wait);
1609
1610 brcmf_pcie_intr_enable(devinfo);
1611 if (brcmf_pcie_attach_bus(bus->dev) == 0)
1612 return;
1613
1614 brcmf_pcie_bus_console_read(devinfo);
1615
1616 fail:
1617 device_release_driver(dev);
1618 }
1619
1620 static int
1621 brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1622 {
1623 int ret;
1624 struct brcmf_pciedev_info *devinfo;
1625 struct brcmf_pciedev *pcie_bus_dev;
1626 struct brcmf_bus *bus;
1627
1628 brcmf_dbg(PCIE, "Enter %x:%x\n", pdev->vendor, pdev->device);
1629
1630 ret = -ENOMEM;
1631 devinfo = kzalloc(sizeof(*devinfo), GFP_KERNEL);
1632 if (devinfo == NULL)
1633 return ret;
1634
1635 devinfo->pdev = pdev;
1636 pcie_bus_dev = NULL;
1637 devinfo->ci = brcmf_chip_attach(devinfo, &brcmf_pcie_buscore_ops);
1638 if (IS_ERR(devinfo->ci)) {
1639 ret = PTR_ERR(devinfo->ci);
1640 devinfo->ci = NULL;
1641 goto fail;
1642 }
1643
1644 pcie_bus_dev = kzalloc(sizeof(*pcie_bus_dev), GFP_KERNEL);
1645 if (pcie_bus_dev == NULL) {
1646 ret = -ENOMEM;
1647 goto fail;
1648 }
1649
1650 bus = kzalloc(sizeof(*bus), GFP_KERNEL);
1651 if (!bus) {
1652 ret = -ENOMEM;
1653 goto fail;
1654 }
1655 bus->msgbuf = kzalloc(sizeof(*bus->msgbuf), GFP_KERNEL);
1656 if (!bus->msgbuf) {
1657 ret = -ENOMEM;
1658 kfree(bus);
1659 goto fail;
1660 }
1661
1662 /* hook it all together. */
1663 pcie_bus_dev->devinfo = devinfo;
1664 pcie_bus_dev->bus = bus;
1665 bus->dev = &pdev->dev;
1666 bus->bus_priv.pcie = pcie_bus_dev;
1667 bus->ops = &brcmf_pcie_bus_ops;
1668 bus->proto_type = BRCMF_PROTO_MSGBUF;
1669 bus->chip = devinfo->coreid;
1670 dev_set_drvdata(&pdev->dev, bus);
1671
1672 ret = brcmf_pcie_get_fwnames(devinfo);
1673 if (ret)
1674 goto fail_bus;
1675
1676 ret = brcmf_fw_get_firmwares(bus->dev, BRCMF_FW_REQUEST_NVRAM |
1677 BRCMF_FW_REQ_NV_OPTIONAL,
1678 devinfo->fw_name, devinfo->nvram_name,
1679 brcmf_pcie_setup);
1680 if (ret == 0)
1681 return 0;
1682 fail_bus:
1683 kfree(bus->msgbuf);
1684 kfree(bus);
1685 fail:
1686 brcmf_err("failed %x:%x\n", pdev->vendor, pdev->device);
1687 brcmf_pcie_release_resource(devinfo);
1688 if (devinfo->ci)
1689 brcmf_chip_detach(devinfo->ci);
1690 kfree(pcie_bus_dev);
1691 kfree(devinfo);
1692 return ret;
1693 }
1694
1695
1696 static void
1697 brcmf_pcie_remove(struct pci_dev *pdev)
1698 {
1699 struct brcmf_pciedev_info *devinfo;
1700 struct brcmf_bus *bus;
1701
1702 brcmf_dbg(PCIE, "Enter\n");
1703
1704 bus = dev_get_drvdata(&pdev->dev);
1705 if (bus == NULL)
1706 return;
1707
1708 devinfo = bus->bus_priv.pcie->devinfo;
1709
1710 devinfo->state = BRCMFMAC_PCIE_STATE_DOWN;
1711 if (devinfo->ci)
1712 brcmf_pcie_intr_disable(devinfo);
1713
1714 brcmf_detach(&pdev->dev);
1715
1716 kfree(bus->bus_priv.pcie);
1717 kfree(bus->msgbuf->flowrings);
1718 kfree(bus->msgbuf);
1719 kfree(bus);
1720
1721 brcmf_pcie_release_irq(devinfo);
1722 brcmf_pcie_release_scratchbuffers(devinfo);
1723 brcmf_pcie_release_ringbuffers(devinfo);
1724 brcmf_pcie_reset_device(devinfo);
1725 brcmf_pcie_release_resource(devinfo);
1726
1727 if (devinfo->ci)
1728 brcmf_chip_detach(devinfo->ci);
1729
1730 kfree(devinfo);
1731 dev_set_drvdata(&pdev->dev, NULL);
1732 }
1733
1734
1735 #ifdef CONFIG_PM
1736
1737
1738 static int brcmf_pcie_suspend(struct pci_dev *pdev, pm_message_t state)
1739 {
1740 struct brcmf_pciedev_info *devinfo;
1741 struct brcmf_bus *bus;
1742 int err;
1743
1744 brcmf_dbg(PCIE, "Enter, state=%d, pdev=%p\n", state.event, pdev);
1745
1746 bus = dev_get_drvdata(&pdev->dev);
1747 devinfo = bus->bus_priv.pcie->devinfo;
1748
1749 brcmf_bus_change_state(bus, BRCMF_BUS_DOWN);
1750
1751 devinfo->mbdata_completed = false;
1752 brcmf_pcie_send_mb_data(devinfo, BRCMF_H2D_HOST_D3_INFORM);
1753
1754 wait_event_timeout(devinfo->mbdata_resp_wait,
1755 devinfo->mbdata_completed,
1756 msecs_to_jiffies(BRCMF_PCIE_MBDATA_TIMEOUT));
1757 if (!devinfo->mbdata_completed) {
1758 brcmf_err("Timeout on response for entering D3 substate\n");
1759 return -EIO;
1760 }
1761 brcmf_pcie_release_irq(devinfo);
1762
1763 err = pci_save_state(pdev);
1764 if (err) {
1765 brcmf_err("pci_save_state failed, err=%d\n", err);
1766 return err;
1767 }
1768
1769 brcmf_chip_detach(devinfo->ci);
1770 devinfo->ci = NULL;
1771
1772 brcmf_pcie_remove(pdev);
1773
1774 return pci_prepare_to_sleep(pdev);
1775 }
1776
1777
1778 static int brcmf_pcie_resume(struct pci_dev *pdev)
1779 {
1780 int err;
1781
1782 brcmf_dbg(PCIE, "Enter, pdev=%p\n", pdev);
1783
1784 err = pci_set_power_state(pdev, PCI_D0);
1785 if (err) {
1786 brcmf_err("pci_set_power_state failed, err=%d\n", err);
1787 return err;
1788 }
1789 pci_restore_state(pdev);
1790
1791 err = brcmf_pcie_probe(pdev, NULL);
1792 if (err)
1793 brcmf_err("probe after resume failed, err=%d\n", err);
1794
1795 return err;
1796 }
1797
1798
1799 #endif /* CONFIG_PM */
1800
1801
1802 #define BRCMF_PCIE_DEVICE(dev_id) { BRCM_PCIE_VENDOR_ID_BROADCOM, dev_id,\
1803 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_OTHER << 8, 0xffff00, 0 }
1804
1805 static struct pci_device_id brcmf_pcie_devid_table[] = {
1806 BRCMF_PCIE_DEVICE(BRCM_PCIE_4354_DEVICE_ID),
1807 BRCMF_PCIE_DEVICE(BRCM_PCIE_4356_DEVICE_ID),
1808 BRCMF_PCIE_DEVICE(BRCM_PCIE_43567_DEVICE_ID),
1809 BRCMF_PCIE_DEVICE(BRCM_PCIE_43570_DEVICE_ID),
1810 BRCMF_PCIE_DEVICE(BRCM_PCIE_43602_DEVICE_ID),
1811 { /* end: all zeroes */ }
1812 };
1813
1814
1815 MODULE_DEVICE_TABLE(pci, brcmf_pcie_devid_table);
1816
1817
1818 static struct pci_driver brcmf_pciedrvr = {
1819 .node = {},
1820 .name = KBUILD_MODNAME,
1821 .id_table = brcmf_pcie_devid_table,
1822 .probe = brcmf_pcie_probe,
1823 .remove = brcmf_pcie_remove,
1824 #ifdef CONFIG_PM
1825 .suspend = brcmf_pcie_suspend,
1826 .resume = brcmf_pcie_resume
1827 #endif /* CONFIG_PM */
1828 };
1829
1830
1831 void brcmf_pcie_register(void)
1832 {
1833 int err;
1834
1835 brcmf_dbg(PCIE, "Enter\n");
1836 err = pci_register_driver(&brcmf_pciedrvr);
1837 if (err)
1838 brcmf_err("PCIE driver registration failed, err=%d\n", err);
1839 }
1840
1841
1842 void brcmf_pcie_exit(void)
1843 {
1844 brcmf_dbg(PCIE, "Enter\n");
1845 pci_unregister_driver(&brcmf_pciedrvr);
1846 }
Linux kernel - Deliverables
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