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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / scsi / bfa / bfa_ioc_ct.c
blobbd53150e4ee00048491df42f40e4f6a9209984f1
1 /*
2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
3 * All rights reserved
4 * www.brocade.com
5 *
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License (GPL) Version 2 as
10 * published by the Free Software Foundation
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18 #include "bfad_drv.h"
19 #include "bfa_ioc.h"
20 #include "bfi_reg.h"
21 #include "bfa_defs.h"
22
23 BFA_TRC_FILE(CNA, IOC_CT);
24
25 #define bfa_ioc_ct_sync_pos(__ioc) \
26 ((uint32_t) (1 << bfa_ioc_pcifn(__ioc)))
27 #define BFA_IOC_SYNC_REQD_SH 16
28 #define bfa_ioc_ct_get_sync_ackd(__val) (__val & 0x0000ffff)
29 #define bfa_ioc_ct_clear_sync_ackd(__val) (__val & 0xffff0000)
30 #define bfa_ioc_ct_get_sync_reqd(__val) (__val >> BFA_IOC_SYNC_REQD_SH)
31 #define bfa_ioc_ct_sync_reqd_pos(__ioc) \
32 (bfa_ioc_ct_sync_pos(__ioc) << BFA_IOC_SYNC_REQD_SH)
33
34 /*
35 * forward declarations
36 */
37 static bfa_boolean_t bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc);
38 static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc);
39 static void bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc);
40 static void bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc);
41 static bfa_boolean_t bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc);
42 static void bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc);
43 static void bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc);
44 static void bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc);
45 static bfa_boolean_t bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc);
46 static void bfa_ioc_ct_set_cur_ioc_fwstate(
47 struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
48 static enum bfi_ioc_state bfa_ioc_ct_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc);
49 static void bfa_ioc_ct_set_alt_ioc_fwstate(
50 struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
51 static enum bfi_ioc_state bfa_ioc_ct_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc);
52
53 static struct bfa_ioc_hwif_s hwif_ct;
54 static struct bfa_ioc_hwif_s hwif_ct2;
55
56 /*
57 * Return true if firmware of current driver matches the running firmware.
58 */
59 static bfa_boolean_t
60 bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc)
61 {
62 enum bfi_ioc_state ioc_fwstate;
63 u32 usecnt;
64 struct bfi_ioc_image_hdr_s fwhdr;
65
66 bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
67 usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
68
69 /*
70 * If usage count is 0, always return TRUE.
71 */
72 if (usecnt == 0) {
73 writel(1, ioc->ioc_regs.ioc_usage_reg);
74 readl(ioc->ioc_regs.ioc_usage_sem_reg);
75 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
76 writel(0, ioc->ioc_regs.ioc_fail_sync);
77 bfa_trc(ioc, usecnt);
78 return BFA_TRUE;
79 }
80
81 ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
82 bfa_trc(ioc, ioc_fwstate);
83
84 /*
85 * Use count cannot be non-zero and chip in uninitialized state.
86 */
87 WARN_ON(ioc_fwstate == BFI_IOC_UNINIT);
88
89 /*
90 * Check if another driver with a different firmware is active
91 */
92 bfa_ioc_fwver_get(ioc, &fwhdr);
93 if (!bfa_ioc_fwver_cmp(ioc, &fwhdr)) {
94 readl(ioc->ioc_regs.ioc_usage_sem_reg);
95 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
96 bfa_trc(ioc, usecnt);
97 return BFA_FALSE;
98 }
99
100 /*
101 * Same firmware version. Increment the reference count.
102 */
103 usecnt++;
104 writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
105 readl(ioc->ioc_regs.ioc_usage_sem_reg);
106 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
107 bfa_trc(ioc, usecnt);
108 return BFA_TRUE;
109 }
110
111 static void
112 bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc)
113 {
114 u32 usecnt;
115
116 /*
117 * decrement usage count
118 */
119 bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
120 usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
121 WARN_ON(usecnt <= 0);
122
123 usecnt--;
124 writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
125 bfa_trc(ioc, usecnt);
126
127 readl(ioc->ioc_regs.ioc_usage_sem_reg);
128 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
129 }
130
131 /*
132 * Notify other functions on HB failure.
133 */
134 static void
135 bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc)
136 {
137 if (bfa_ioc_is_cna(ioc)) {
138 writel(__FW_INIT_HALT_P, ioc->ioc_regs.ll_halt);
139 writel(__FW_INIT_HALT_P, ioc->ioc_regs.alt_ll_halt);
140 /* Wait for halt to take effect */
141 readl(ioc->ioc_regs.ll_halt);
142 readl(ioc->ioc_regs.alt_ll_halt);
143 } else {
144 writel(~0U, ioc->ioc_regs.err_set);
145 readl(ioc->ioc_regs.err_set);
146 }
147 }
148
149 /*
150 * Host to LPU mailbox message addresses
151 */
152 static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } ct_fnreg[] = {
153 { HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
154 { HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 },
155 { HOSTFN2_LPU_MBOX0_0, LPU_HOSTFN2_MBOX0_0, HOST_PAGE_NUM_FN2 },
156 { HOSTFN3_LPU_MBOX0_8, LPU_HOSTFN3_MBOX0_8, HOST_PAGE_NUM_FN3 }
157 };
158
159 /*
160 * Host <-> LPU mailbox command/status registers - port 0
161 */
162 static struct { u32 hfn, lpu; } ct_p0reg[] = {
163 { HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
164 { HOSTFN1_LPU0_CMD_STAT, LPU0_HOSTFN1_CMD_STAT },
165 { HOSTFN2_LPU0_CMD_STAT, LPU0_HOSTFN2_CMD_STAT },
166 { HOSTFN3_LPU0_CMD_STAT, LPU0_HOSTFN3_CMD_STAT }
167 };
168
169 /*
170 * Host <-> LPU mailbox command/status registers - port 1
171 */
172 static struct { u32 hfn, lpu; } ct_p1reg[] = {
173 { HOSTFN0_LPU1_CMD_STAT, LPU1_HOSTFN0_CMD_STAT },
174 { HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT },
175 { HOSTFN2_LPU1_CMD_STAT, LPU1_HOSTFN2_CMD_STAT },
176 { HOSTFN3_LPU1_CMD_STAT, LPU1_HOSTFN3_CMD_STAT }
177 };
178
179 static struct { uint32_t hfn_mbox, lpu_mbox, hfn_pgn, hfn, lpu, lpu_read; }
180 ct2_reg[] = {
181 { CT2_HOSTFN_LPU0_MBOX0, CT2_LPU0_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
182 CT2_HOSTFN_LPU0_CMD_STAT, CT2_LPU0_HOSTFN_CMD_STAT,
183 CT2_HOSTFN_LPU0_READ_STAT},
184 { CT2_HOSTFN_LPU1_MBOX0, CT2_LPU1_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
185 CT2_HOSTFN_LPU1_CMD_STAT, CT2_LPU1_HOSTFN_CMD_STAT,
186 CT2_HOSTFN_LPU1_READ_STAT},
187 };
188
189 static void
190 bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc)
191 {
192 void __iomem *rb;
193 int pcifn = bfa_ioc_pcifn(ioc);
194
195 rb = bfa_ioc_bar0(ioc);
196
197 ioc->ioc_regs.hfn_mbox = rb + ct_fnreg[pcifn].hfn_mbox;
198 ioc->ioc_regs.lpu_mbox = rb + ct_fnreg[pcifn].lpu_mbox;
199 ioc->ioc_regs.host_page_num_fn = rb + ct_fnreg[pcifn].hfn_pgn;
200
201 if (ioc->port_id == 0) {
202 ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
203 ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
204 ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
205 ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p0reg[pcifn].hfn;
206 ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p0reg[pcifn].lpu;
207 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
208 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
209 } else {
210 ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
211 ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_STATE_REG);
212 ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC0_STATE_REG;
213 ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p1reg[pcifn].hfn;
214 ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p1reg[pcifn].lpu;
215 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
216 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
217 }
218
219 /*
220 * PSS control registers
221 */
222 ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
223 ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
224 ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + APP_PLL_LCLK_CTL_REG);
225 ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_SCLK_CTL_REG);
226
227 /*
228 * IOC semaphore registers and serialization
229 */
230 ioc->ioc_regs.ioc_sem_reg = (rb + HOST_SEM0_REG);
231 ioc->ioc_regs.ioc_usage_sem_reg = (rb + HOST_SEM1_REG);
232 ioc->ioc_regs.ioc_init_sem_reg = (rb + HOST_SEM2_REG);
233 ioc->ioc_regs.ioc_usage_reg = (rb + BFA_FW_USE_COUNT);
234 ioc->ioc_regs.ioc_fail_sync = (rb + BFA_IOC_FAIL_SYNC);
235
236 /*
237 * sram memory access
238 */
239 ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
240 ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
241
242 /*
243 * err set reg : for notification of hb failure in fcmode
244 */
245 ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
246 }
247
248 static void
249 bfa_ioc_ct2_reg_init(struct bfa_ioc_s *ioc)
250 {
251 void __iomem *rb;
252 int port = bfa_ioc_portid(ioc);
253
254 rb = bfa_ioc_bar0(ioc);
255
256 ioc->ioc_regs.hfn_mbox = rb + ct2_reg[port].hfn_mbox;
257 ioc->ioc_regs.lpu_mbox = rb + ct2_reg[port].lpu_mbox;
258 ioc->ioc_regs.host_page_num_fn = rb + ct2_reg[port].hfn_pgn;
259 ioc->ioc_regs.hfn_mbox_cmd = rb + ct2_reg[port].hfn;
260 ioc->ioc_regs.lpu_mbox_cmd = rb + ct2_reg[port].lpu;
261 ioc->ioc_regs.lpu_read_stat = rb + ct2_reg[port].lpu_read;
262
263 if (port == 0) {
264 ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC0_HBEAT_REG;
265 ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
266 ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
267 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
268 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
269 } else {
270 ioc->ioc_regs.heartbeat = (rb + CT2_BFA_IOC1_HBEAT_REG);
271 ioc->ioc_regs.ioc_fwstate = (rb + CT2_BFA_IOC1_STATE_REG);
272 ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
273 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
274 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
275 }
276
277 /*
278 * PSS control registers
279 */
280 ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
281 ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
282 ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + CT2_APP_PLL_LCLK_CTL_REG);
283 ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + CT2_APP_PLL_SCLK_CTL_REG);
284
285 /*
286 * IOC semaphore registers and serialization
287 */
288 ioc->ioc_regs.ioc_sem_reg = (rb + CT2_HOST_SEM0_REG);
289 ioc->ioc_regs.ioc_usage_sem_reg = (rb + CT2_HOST_SEM1_REG);
290 ioc->ioc_regs.ioc_init_sem_reg = (rb + CT2_HOST_SEM2_REG);
291 ioc->ioc_regs.ioc_usage_reg = (rb + CT2_BFA_FW_USE_COUNT);
292 ioc->ioc_regs.ioc_fail_sync = (rb + CT2_BFA_IOC_FAIL_SYNC);
293
294 /*
295 * sram memory access
296 */
297 ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
298 ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
299
300 /*
301 * err set reg : for notification of hb failure in fcmode
302 */
303 ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
304 }
305
306 /*
307 * Initialize IOC to port mapping.
308 */
309
310 #define FNC_PERS_FN_SHIFT(__fn) ((__fn) * 8)
311 static void
312 bfa_ioc_ct_map_port(struct bfa_ioc_s *ioc)
313 {
314 void __iomem *rb = ioc->pcidev.pci_bar_kva;
315 u32 r32;
316
317 /*
318 * For catapult, base port id on personality register and IOC type
319 */
320 r32 = readl(rb + FNC_PERS_REG);
321 r32 >>= FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc));
322 ioc->port_id = (r32 & __F0_PORT_MAP_MK) >> __F0_PORT_MAP_SH;
323
324 bfa_trc(ioc, bfa_ioc_pcifn(ioc));
325 bfa_trc(ioc, ioc->port_id);
326 }
327
328 static void
329 bfa_ioc_ct2_map_port(struct bfa_ioc_s *ioc)
330 {
331 void __iomem *rb = ioc->pcidev.pci_bar_kva;
332 u32 r32;
333
334 r32 = readl(rb + CT2_HOSTFN_PERSONALITY0);
335 ioc->port_id = ((r32 & __FC_LL_PORT_MAP__MK) >> __FC_LL_PORT_MAP__SH);
336
337 bfa_trc(ioc, bfa_ioc_pcifn(ioc));
338 bfa_trc(ioc, ioc->port_id);
339 }
340
341 /*
342 * Set interrupt mode for a function: INTX or MSIX
343 */
344 static void
345 bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
346 {
347 void __iomem *rb = ioc->pcidev.pci_bar_kva;
348 u32 r32, mode;
349
350 r32 = readl(rb + FNC_PERS_REG);
351 bfa_trc(ioc, r32);
352
353 mode = (r32 >> FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc))) &
354 __F0_INTX_STATUS;
355
356 /*
357 * If already in desired mode, do not change anything
358 */
359 if ((!msix && mode) || (msix && !mode))
360 return;
361
362 if (msix)
363 mode = __F0_INTX_STATUS_MSIX;
364 else
365 mode = __F0_INTX_STATUS_INTA;
366
367 r32 &= ~(__F0_INTX_STATUS << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
368 r32 |= (mode << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
369 bfa_trc(ioc, r32);
370
371 writel(r32, rb + FNC_PERS_REG);
372 }
373
374 bfa_boolean_t
375 bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc_s *ioc)
376 {
377 u32 r32;
378
379 r32 = readl(ioc->ioc_regs.lpu_read_stat);
380 if (r32) {
381 writel(1, ioc->ioc_regs.lpu_read_stat);
382 return BFA_TRUE;
383 }
384
385 return BFA_FALSE;
386 }
387
388 /*
389 * Cleanup hw semaphore and usecnt registers
390 */
391 static void
392 bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
393 {
394
395 bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
396 writel(0, ioc->ioc_regs.ioc_usage_reg);
397 readl(ioc->ioc_regs.ioc_usage_sem_reg);
398 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
399
400 writel(0, ioc->ioc_regs.ioc_fail_sync);
401 /*
402 * Read the hw sem reg to make sure that it is locked
403 * before we clear it. If it is not locked, writing 1
404 * will lock it instead of clearing it.
405 */
406 readl(ioc->ioc_regs.ioc_sem_reg);
407 writel(1, ioc->ioc_regs.ioc_sem_reg);
408 }
409
410 static bfa_boolean_t
411 bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc)
412 {
413 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
414 uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
415
416 /*
417 * Driver load time. If the sync required bit for this PCI fn
418 * is set, it is due to an unclean exit by the driver for this
419 * PCI fn in the previous incarnation. Whoever comes here first
420 * should clean it up, no matter which PCI fn.
421 */
422
423 if (sync_reqd & bfa_ioc_ct_sync_pos(ioc)) {
424 writel(0, ioc->ioc_regs.ioc_fail_sync);
425 writel(1, ioc->ioc_regs.ioc_usage_reg);
426 writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
427 writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
428 return BFA_TRUE;
429 }
430
431 return bfa_ioc_ct_sync_complete(ioc);
432 }
433
434 /*
435 * Synchronized IOC failure processing routines
436 */
437 static void
438 bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc)
439 {
440 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
441 uint32_t sync_pos = bfa_ioc_ct_sync_reqd_pos(ioc);
442
443 writel((r32 | sync_pos), ioc->ioc_regs.ioc_fail_sync);
444 }
445
446 static void
447 bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc)
448 {
449 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
450 uint32_t sync_msk = bfa_ioc_ct_sync_reqd_pos(ioc) |
451 bfa_ioc_ct_sync_pos(ioc);
452
453 writel((r32 & ~sync_msk), ioc->ioc_regs.ioc_fail_sync);
454 }
455
456 static void
457 bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc)
458 {
459 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
460
461 writel((r32 | bfa_ioc_ct_sync_pos(ioc)),
462 ioc->ioc_regs.ioc_fail_sync);
463 }
464
465 static bfa_boolean_t
466 bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc)
467 {
468 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
469 uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
470 uint32_t sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
471 uint32_t tmp_ackd;
472
473 if (sync_ackd == 0)
474 return BFA_TRUE;
475
476 /*
477 * The check below is to see whether any other PCI fn
478 * has reinitialized the ASIC (reset sync_ackd bits)
479 * and failed again while this IOC was waiting for hw
480 * semaphore (in bfa_iocpf_sm_semwait()).
481 */
482 tmp_ackd = sync_ackd;
483 if ((sync_reqd & bfa_ioc_ct_sync_pos(ioc)) &&
484 !(sync_ackd & bfa_ioc_ct_sync_pos(ioc)))
485 sync_ackd |= bfa_ioc_ct_sync_pos(ioc);
486
487 if (sync_reqd == sync_ackd) {
488 writel(bfa_ioc_ct_clear_sync_ackd(r32),
489 ioc->ioc_regs.ioc_fail_sync);
490 writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
491 writel(BFI_IOC_FAIL, ioc->ioc_regs.alt_ioc_fwstate);
492 return BFA_TRUE;
493 }
494
495 /*
496 * If another PCI fn reinitialized and failed again while
497 * this IOC was waiting for hw sem, the sync_ackd bit for
498 * this IOC need to be set again to allow reinitialization.
499 */
500 if (tmp_ackd != sync_ackd)
501 writel((r32 | sync_ackd), ioc->ioc_regs.ioc_fail_sync);
502
503 return BFA_FALSE;
504 }
505
506 /**
507 * Called from bfa_ioc_attach() to map asic specific calls.
508 */
509 static void
510 bfa_ioc_set_ctx_hwif(struct bfa_ioc_s *ioc, struct bfa_ioc_hwif_s *hwif)
511 {
512 hwif->ioc_firmware_lock = bfa_ioc_ct_firmware_lock;
513 hwif->ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock;
514 hwif->ioc_notify_fail = bfa_ioc_ct_notify_fail;
515 hwif->ioc_ownership_reset = bfa_ioc_ct_ownership_reset;
516 hwif->ioc_sync_start = bfa_ioc_ct_sync_start;
517 hwif->ioc_sync_join = bfa_ioc_ct_sync_join;
518 hwif->ioc_sync_leave = bfa_ioc_ct_sync_leave;
519 hwif->ioc_sync_ack = bfa_ioc_ct_sync_ack;
520 hwif->ioc_sync_complete = bfa_ioc_ct_sync_complete;
521 hwif->ioc_set_fwstate = bfa_ioc_ct_set_cur_ioc_fwstate;
522 hwif->ioc_get_fwstate = bfa_ioc_ct_get_cur_ioc_fwstate;
523 hwif->ioc_set_alt_fwstate = bfa_ioc_ct_set_alt_ioc_fwstate;
524 hwif->ioc_get_alt_fwstate = bfa_ioc_ct_get_alt_ioc_fwstate;
525 }
526
527 /**
528 * Called from bfa_ioc_attach() to map asic specific calls.
529 */
530 void
531 bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc)
532 {
533 bfa_ioc_set_ctx_hwif(ioc, &hwif_ct);
534
535 hwif_ct.ioc_pll_init = bfa_ioc_ct_pll_init;
536 hwif_ct.ioc_reg_init = bfa_ioc_ct_reg_init;
537 hwif_ct.ioc_map_port = bfa_ioc_ct_map_port;
538 hwif_ct.ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set;
539 ioc->ioc_hwif = &hwif_ct;
540 }
541
542 /**
543 * Called from bfa_ioc_attach() to map asic specific calls.
544 */
545 void
546 bfa_ioc_set_ct2_hwif(struct bfa_ioc_s *ioc)
547 {
548 bfa_ioc_set_ctx_hwif(ioc, &hwif_ct2);
549
550 hwif_ct2.ioc_pll_init = bfa_ioc_ct2_pll_init;
551 hwif_ct2.ioc_reg_init = bfa_ioc_ct2_reg_init;
552 hwif_ct2.ioc_map_port = bfa_ioc_ct2_map_port;
553 hwif_ct2.ioc_lpu_read_stat = bfa_ioc_ct2_lpu_read_stat;
554 hwif_ct2.ioc_isr_mode_set = NULL;
555 ioc->ioc_hwif = &hwif_ct2;
556 }
557
558 /*
559 * Workaround for MSI-X resource allocation for catapult-2 with no asic block
560 */
561 #define HOSTFN_MSIX_DEFAULT 64
562 #define HOSTFN_MSIX_VT_INDEX_MBOX_ERR 0x30138
563 #define HOSTFN_MSIX_VT_OFST_NUMVT 0x3013c
564 #define __MSIX_VT_NUMVT__MK 0x003ff800
565 #define __MSIX_VT_NUMVT__SH 11
566 #define __MSIX_VT_NUMVT_(_v) ((_v) << __MSIX_VT_NUMVT__SH)
567 #define __MSIX_VT_OFST_ 0x000007ff
568 void
569 bfa_ioc_ct2_poweron(struct bfa_ioc_s *ioc)
570 {
571 void __iomem *rb = ioc->pcidev.pci_bar_kva;
572 u32 r32;
573
574 r32 = readl(rb + HOSTFN_MSIX_VT_OFST_NUMVT);
575 if (r32 & __MSIX_VT_NUMVT__MK) {
576 writel(r32 & __MSIX_VT_OFST_,
577 rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
578 return;
579 }
580
581 writel(__MSIX_VT_NUMVT_(HOSTFN_MSIX_DEFAULT - 1) |
582 HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
583 rb + HOSTFN_MSIX_VT_OFST_NUMVT);
584 writel(HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
585 rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
586 }
587
588 bfa_status_t
589 bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
590 {
591 u32 pll_sclk, pll_fclk, r32;
592 bfa_boolean_t fcmode = (mode == BFI_ASIC_MODE_FC);
593
594 pll_sclk = __APP_PLL_SCLK_LRESETN | __APP_PLL_SCLK_ENARST |
595 __APP_PLL_SCLK_RSEL200500 | __APP_PLL_SCLK_P0_1(3U) |
596 __APP_PLL_SCLK_JITLMT0_1(3U) |
597 __APP_PLL_SCLK_CNTLMT0_1(1U);
598 pll_fclk = __APP_PLL_LCLK_LRESETN | __APP_PLL_LCLK_ENARST |
599 __APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
600 __APP_PLL_LCLK_JITLMT0_1(3U) |
601 __APP_PLL_LCLK_CNTLMT0_1(1U);
602
603 if (fcmode) {
604 writel(0, (rb + OP_MODE));
605 writel(__APP_EMS_CMLCKSEL | __APP_EMS_REFCKBUFEN2 |
606 __APP_EMS_CHANNEL_SEL, (rb + ETH_MAC_SER_REG));
607 } else {
608 writel(__GLOBAL_FCOE_MODE, (rb + OP_MODE));
609 writel(__APP_EMS_REFCKBUFEN1, (rb + ETH_MAC_SER_REG));
610 }
611 writel(BFI_IOC_UNINIT, (rb + BFA_IOC0_STATE_REG));
612 writel(BFI_IOC_UNINIT, (rb + BFA_IOC1_STATE_REG));
613 writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
614 writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
615 writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
616 writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
617 writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
618 writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
619 writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET,
620 rb + APP_PLL_SCLK_CTL_REG);
621 writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET,
622 rb + APP_PLL_LCLK_CTL_REG);
623 writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET |
624 __APP_PLL_SCLK_ENABLE, rb + APP_PLL_SCLK_CTL_REG);
625 writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET |
626 __APP_PLL_LCLK_ENABLE, rb + APP_PLL_LCLK_CTL_REG);
627 readl(rb + HOSTFN0_INT_MSK);
628 udelay(2000);
629 writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
630 writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
631 writel(pll_sclk | __APP_PLL_SCLK_ENABLE, rb + APP_PLL_SCLK_CTL_REG);
632 writel(pll_fclk | __APP_PLL_LCLK_ENABLE, rb + APP_PLL_LCLK_CTL_REG);
633
634 if (!fcmode) {
635 writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P0));
636 writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P1));
637 }
638 r32 = readl((rb + PSS_CTL_REG));
639 r32 &= ~__PSS_LMEM_RESET;
640 writel(r32, (rb + PSS_CTL_REG));
641 udelay(1000);
642 if (!fcmode) {
643 writel(0, (rb + PMM_1T_RESET_REG_P0));
644 writel(0, (rb + PMM_1T_RESET_REG_P1));
645 }
646
647 writel(__EDRAM_BISTR_START, (rb + MBIST_CTL_REG));
648 udelay(1000);
649 r32 = readl((rb + MBIST_STAT_REG));
650 writel(0, (rb + MBIST_CTL_REG));
651 return BFA_STATUS_OK;
652 }
653
654 static void
655 bfa_ioc_ct2_sclk_init(void __iomem *rb)
656 {
657 u32 r32;
658
659 /*
660 * put s_clk PLL and PLL FSM in reset
661 */
662 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
663 r32 &= ~(__APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN);
664 r32 |= (__APP_PLL_SCLK_ENARST | __APP_PLL_SCLK_BYPASS |
665 __APP_PLL_SCLK_LOGIC_SOFT_RESET);
666 writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
667
668 /*
669 * Ignore mode and program for the max clock (which is FC16)
670 * Firmware/NFC will do the PLL init appropiately
671 */
672 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
673 r32 &= ~(__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2);
674 writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
675
676 /*
677 * while doing PLL init dont clock gate ethernet subsystem
678 */
679 r32 = readl((rb + CT2_CHIP_MISC_PRG));
680 writel(r32 | __ETH_CLK_ENABLE_PORT0, (rb + CT2_CHIP_MISC_PRG));
681
682 r32 = readl((rb + CT2_PCIE_MISC_REG));
683 writel(r32 | __ETH_CLK_ENABLE_PORT1, (rb + CT2_PCIE_MISC_REG));
684
685 /*
686 * set sclk value
687 */
688 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
689 r32 &= (__P_SCLK_PLL_LOCK | __APP_PLL_SCLK_REFCLK_SEL |
690 __APP_PLL_SCLK_CLK_DIV2);
691 writel(r32 | 0x1061731b, (rb + CT2_APP_PLL_SCLK_CTL_REG));
692
693 /*
694 * poll for s_clk lock or delay 1ms
695 */
696 udelay(1000);
697 }
698
699 static void
700 bfa_ioc_ct2_lclk_init(void __iomem *rb)
701 {
702 u32 r32;
703
704 /*
705 * put l_clk PLL and PLL FSM in reset
706 */
707 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
708 r32 &= ~(__APP_PLL_LCLK_ENABLE | __APP_PLL_LCLK_LRESETN);
709 r32 |= (__APP_PLL_LCLK_ENARST | __APP_PLL_LCLK_BYPASS |
710 __APP_PLL_LCLK_LOGIC_SOFT_RESET);
711 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
712
713 /*
714 * set LPU speed (set for FC16 which will work for other modes)
715 */
716 r32 = readl((rb + CT2_CHIP_MISC_PRG));
717 writel(r32, (rb + CT2_CHIP_MISC_PRG));
718
719 /*
720 * set LPU half speed (set for FC16 which will work for other modes)
721 */
722 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
723 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
724
725 /*
726 * set lclk for mode (set for FC16)
727 */
728 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
729 r32 &= (__P_LCLK_PLL_LOCK | __APP_LPUCLK_HALFSPEED);
730 r32 |= 0x20c1731b;
731 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
732
733 /*
734 * poll for s_clk lock or delay 1ms
735 */
736 udelay(1000);
737 }
738
739 static void
740 bfa_ioc_ct2_mem_init(void __iomem *rb)
741 {
742 u32 r32;
743
744 r32 = readl((rb + PSS_CTL_REG));
745 r32 &= ~__PSS_LMEM_RESET;
746 writel(r32, (rb + PSS_CTL_REG));
747 udelay(1000);
748
749 writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
750 udelay(1000);
751 writel(0, (rb + CT2_MBIST_CTL_REG));
752 }
753
754 void
755 bfa_ioc_ct2_mac_reset(void __iomem *rb)
756 {
757 /* put port0, port1 MAC & AHB in reset */
758 writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
759 rb + CT2_CSI_MAC_CONTROL_REG(0));
760 writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
761 rb + CT2_CSI_MAC_CONTROL_REG(1));
762 }
763
764 static void
765 bfa_ioc_ct2_enable_flash(void __iomem *rb)
766 {
767 u32 r32;
768
769 r32 = readl((rb + PSS_GPIO_OUT_REG));
770 writel(r32 & ~1, (rb + PSS_GPIO_OUT_REG));
771 r32 = readl((rb + PSS_GPIO_OE_REG));
772 writel(r32 | 1, (rb + PSS_GPIO_OE_REG));
773 }
774
775 #define CT2_NFC_MAX_DELAY 1000
776 #define CT2_NFC_PAUSE_MAX_DELAY 4000
777 #define CT2_NFC_VER_VALID 0x147
778 #define CT2_NFC_STATE_RUNNING 0x20000001
779 #define BFA_IOC_PLL_POLL 1000000
780
781 static bfa_boolean_t
782 bfa_ioc_ct2_nfc_halted(void __iomem *rb)
783 {
784 u32 r32;
785
786 r32 = readl(rb + CT2_NFC_CSR_SET_REG);
787 if (r32 & __NFC_CONTROLLER_HALTED)
788 return BFA_TRUE;
789
790 return BFA_FALSE;
791 }
792
793 static void
794 bfa_ioc_ct2_nfc_halt(void __iomem *rb)
795 {
796 int i;
797
798 writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_SET_REG);
799 for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
800 if (bfa_ioc_ct2_nfc_halted(rb))
801 break;
802 udelay(1000);
803 }
804 WARN_ON(!bfa_ioc_ct2_nfc_halted(rb));
805 }
806
807 static void
808 bfa_ioc_ct2_nfc_resume(void __iomem *rb)
809 {
810 u32 r32;
811 int i;
812
813 writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_CLR_REG);
814 for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
815 r32 = readl(rb + CT2_NFC_CSR_SET_REG);
816 if (!(r32 & __NFC_CONTROLLER_HALTED))
817 return;
818 udelay(1000);
819 }
820 WARN_ON(1);
821 }
822
823 static void
824 bfa_ioc_ct2_clk_reset(void __iomem *rb)
825 {
826 u32 r32;
827
828 bfa_ioc_ct2_sclk_init(rb);
829 bfa_ioc_ct2_lclk_init(rb);
830
831 /*
832 * release soft reset on s_clk & l_clk
833 */
834 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
835 writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
836 (rb + CT2_APP_PLL_SCLK_CTL_REG));
837
838 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
839 writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
840 (rb + CT2_APP_PLL_LCLK_CTL_REG));
841
842 }
843
844 static void
845 bfa_ioc_ct2_nfc_clk_reset(void __iomem *rb)
846 {
847 u32 r32, i;
848
849 r32 = readl((rb + PSS_CTL_REG));
850 r32 |= (__PSS_LPU0_RESET | __PSS_LPU1_RESET);
851 writel(r32, (rb + PSS_CTL_REG));
852
853 writel(__RESET_AND_START_SCLK_LCLK_PLLS, rb + CT2_CSI_FW_CTL_SET_REG);
854
855 for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
856 r32 = readl(rb + CT2_NFC_FLASH_STS_REG);
857
858 if ((r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS))
859 break;
860 }
861 WARN_ON(!(r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS));
862
863 for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
864 r32 = readl(rb + CT2_NFC_FLASH_STS_REG);
865
866 if (!(r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS))
867 break;
868 }
869 WARN_ON((r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS));
870
871 r32 = readl(rb + CT2_CSI_FW_CTL_REG);
872 WARN_ON((r32 & __RESET_AND_START_SCLK_LCLK_PLLS));
873 }
874
875 static void
876 bfa_ioc_ct2_wait_till_nfc_running(void __iomem *rb)
877 {
878 u32 r32;
879 int i;
880
881 if (bfa_ioc_ct2_nfc_halted(rb))
882 bfa_ioc_ct2_nfc_resume(rb);
883 for (i = 0; i < CT2_NFC_PAUSE_MAX_DELAY; i++) {
884 r32 = readl(rb + CT2_NFC_STS_REG);
885 if (r32 == CT2_NFC_STATE_RUNNING)
886 return;
887 udelay(1000);
888 }
889
890 r32 = readl(rb + CT2_NFC_STS_REG);
891 WARN_ON(!(r32 == CT2_NFC_STATE_RUNNING));
892 }
893
894 bfa_status_t
895 bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
896 {
897 u32 wgn, r32, nfc_ver;
898
899 wgn = readl(rb + CT2_WGN_STATUS);
900
901 if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
902 /*
903 * If flash is corrupted, enable flash explicitly
904 */
905 bfa_ioc_ct2_clk_reset(rb);
906 bfa_ioc_ct2_enable_flash(rb);
907
908 bfa_ioc_ct2_mac_reset(rb);
909
910 bfa_ioc_ct2_clk_reset(rb);
911 bfa_ioc_ct2_enable_flash(rb);
912
913 } else {
914 nfc_ver = readl(rb + CT2_RSC_GPR15_REG);
915
916 if ((nfc_ver >= CT2_NFC_VER_VALID) &&
917 (wgn == (__A2T_AHB_LOAD | __WGN_READY))) {
918
919 bfa_ioc_ct2_wait_till_nfc_running(rb);
920
921 bfa_ioc_ct2_nfc_clk_reset(rb);
922 } else {
923 bfa_ioc_ct2_nfc_halt(rb);
924
925 bfa_ioc_ct2_clk_reset(rb);
926 bfa_ioc_ct2_mac_reset(rb);
927 bfa_ioc_ct2_clk_reset(rb);
928
929 }
930 }
931 /*
932 * The very first PCIe DMA Read done by LPU fails with a fatal error,
933 * when Address Translation Cache (ATC) has been enabled by system BIOS.
934 *
935 * Workaround:
936 * Disable Invalidated Tag Match Enable capability by setting the bit 26
937 * of CHIP_MISC_PRG to 0, by default it is set to 1.
938 */
939 r32 = readl(rb + CT2_CHIP_MISC_PRG);
940 writel((r32 & 0xfbffffff), (rb + CT2_CHIP_MISC_PRG));
941
942 /*
943 * Mask the interrupts and clear any
944 * pending interrupts left by BIOS/EFI
945 */
946
947 writel(1, (rb + CT2_LPU0_HOSTFN_MBOX0_MSK));
948 writel(1, (rb + CT2_LPU1_HOSTFN_MBOX0_MSK));
949
950 /* For first time initialization, no need to clear interrupts */
951 r32 = readl(rb + HOST_SEM5_REG);
952 if (r32 & 0x1) {
953 r32 = readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
954 if (r32 == 1) {
955 writel(1, (rb + CT2_LPU0_HOSTFN_CMD_STAT));
956 readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
957 }
958 r32 = readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
959 if (r32 == 1) {
960 writel(1, (rb + CT2_LPU1_HOSTFN_CMD_STAT));
961 readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
962 }
963 }
964
965 bfa_ioc_ct2_mem_init(rb);
966
967 writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC0_STATE_REG));
968 writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC1_STATE_REG));
969
970 return BFA_STATUS_OK;
971 }
972
973 static void
974 bfa_ioc_ct_set_cur_ioc_fwstate(struct bfa_ioc_s *ioc,
975 enum bfi_ioc_state fwstate)
976 {
977 writel(fwstate, ioc->ioc_regs.ioc_fwstate);
978 }
979
980 static enum bfi_ioc_state
981 bfa_ioc_ct_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc)
982 {
983 return (enum bfi_ioc_state)readl(ioc->ioc_regs.ioc_fwstate);
984 }
985
986 static void
987 bfa_ioc_ct_set_alt_ioc_fwstate(struct bfa_ioc_s *ioc,
988 enum bfi_ioc_state fwstate)
989 {
990 writel(fwstate, ioc->ioc_regs.alt_ioc_fwstate);
991 }
992
993 static enum bfi_ioc_state
994 bfa_ioc_ct_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc)
995 {
996 return (enum bfi_ioc_state) readl(ioc->ioc_regs.alt_ioc_fwstate);
997 }
Linux with added FPC-III support