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xfs: Don't allocate new buffers on every call to _xfs_buf_find
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / bfa / bfa_ioc_ct.c
blobd1b8f0caaa79ed3f301d6c8b509339fee76d0169
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
47 static struct bfa_ioc_hwif_s hwif_ct;
48 static struct bfa_ioc_hwif_s hwif_ct2;
49
50 /*
51 * Return true if firmware of current driver matches the running firmware.
52 */
53 static bfa_boolean_t
54 bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc)
55 {
56 enum bfi_ioc_state ioc_fwstate;
57 u32 usecnt;
58 struct bfi_ioc_image_hdr_s fwhdr;
59
60 /*
61 * If bios boot (flash based) -- do not increment usage count
62 */
63 if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
64 BFA_IOC_FWIMG_MINSZ)
65 return BFA_TRUE;
66
67 bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
68 usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
69
70 /*
71 * If usage count is 0, always return TRUE.
72 */
73 if (usecnt == 0) {
74 writel(1, ioc->ioc_regs.ioc_usage_reg);
75 readl(ioc->ioc_regs.ioc_usage_sem_reg);
76 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
77 writel(0, ioc->ioc_regs.ioc_fail_sync);
78 bfa_trc(ioc, usecnt);
79 return BFA_TRUE;
80 }
81
82 ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
83 bfa_trc(ioc, ioc_fwstate);
84
85 /*
86 * Use count cannot be non-zero and chip in uninitialized state.
87 */
88 WARN_ON(ioc_fwstate == BFI_IOC_UNINIT);
89
90 /*
91 * Check if another driver with a different firmware is active
92 */
93 bfa_ioc_fwver_get(ioc, &fwhdr);
94 if (!bfa_ioc_fwver_cmp(ioc, &fwhdr)) {
95 readl(ioc->ioc_regs.ioc_usage_sem_reg);
96 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
97 bfa_trc(ioc, usecnt);
98 return BFA_FALSE;
99 }
100
101 /*
102 * Same firmware version. Increment the reference count.
103 */
104 usecnt++;
105 writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
106 readl(ioc->ioc_regs.ioc_usage_sem_reg);
107 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
108 bfa_trc(ioc, usecnt);
109 return BFA_TRUE;
110 }
111
112 static void
113 bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc)
114 {
115 u32 usecnt;
116
117 /*
118 * If bios boot (flash based) -- do not decrement usage count
119 */
120 if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
121 BFA_IOC_FWIMG_MINSZ)
122 return;
123
124 /*
125 * decrement usage count
126 */
127 bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
128 usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
129 WARN_ON(usecnt <= 0);
130
131 usecnt--;
132 writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
133 bfa_trc(ioc, usecnt);
134
135 readl(ioc->ioc_regs.ioc_usage_sem_reg);
136 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
137 }
138
139 /*
140 * Notify other functions on HB failure.
141 */
142 static void
143 bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc)
144 {
145 if (bfa_ioc_is_cna(ioc)) {
146 writel(__FW_INIT_HALT_P, ioc->ioc_regs.ll_halt);
147 writel(__FW_INIT_HALT_P, ioc->ioc_regs.alt_ll_halt);
148 /* Wait for halt to take effect */
149 readl(ioc->ioc_regs.ll_halt);
150 readl(ioc->ioc_regs.alt_ll_halt);
151 } else {
152 writel(~0U, ioc->ioc_regs.err_set);
153 readl(ioc->ioc_regs.err_set);
154 }
155 }
156
157 /*
158 * Host to LPU mailbox message addresses
159 */
160 static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } ct_fnreg[] = {
161 { HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
162 { HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 },
163 { HOSTFN2_LPU_MBOX0_0, LPU_HOSTFN2_MBOX0_0, HOST_PAGE_NUM_FN2 },
164 { HOSTFN3_LPU_MBOX0_8, LPU_HOSTFN3_MBOX0_8, HOST_PAGE_NUM_FN3 }
165 };
166
167 /*
168 * Host <-> LPU mailbox command/status registers - port 0
169 */
170 static struct { u32 hfn, lpu; } ct_p0reg[] = {
171 { HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
172 { HOSTFN1_LPU0_CMD_STAT, LPU0_HOSTFN1_CMD_STAT },
173 { HOSTFN2_LPU0_CMD_STAT, LPU0_HOSTFN2_CMD_STAT },
174 { HOSTFN3_LPU0_CMD_STAT, LPU0_HOSTFN3_CMD_STAT }
175 };
176
177 /*
178 * Host <-> LPU mailbox command/status registers - port 1
179 */
180 static struct { u32 hfn, lpu; } ct_p1reg[] = {
181 { HOSTFN0_LPU1_CMD_STAT, LPU1_HOSTFN0_CMD_STAT },
182 { HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT },
183 { HOSTFN2_LPU1_CMD_STAT, LPU1_HOSTFN2_CMD_STAT },
184 { HOSTFN3_LPU1_CMD_STAT, LPU1_HOSTFN3_CMD_STAT }
185 };
186
187 static struct { uint32_t hfn_mbox, lpu_mbox, hfn_pgn, hfn, lpu, lpu_read; }
188 ct2_reg[] = {
189 { CT2_HOSTFN_LPU0_MBOX0, CT2_LPU0_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
190 CT2_HOSTFN_LPU0_CMD_STAT, CT2_LPU0_HOSTFN_CMD_STAT,
191 CT2_HOSTFN_LPU0_READ_STAT},
192 { CT2_HOSTFN_LPU1_MBOX0, CT2_LPU1_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
193 CT2_HOSTFN_LPU1_CMD_STAT, CT2_LPU1_HOSTFN_CMD_STAT,
194 CT2_HOSTFN_LPU1_READ_STAT},
195 };
196
197 static void
198 bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc)
199 {
200 void __iomem *rb;
201 int pcifn = bfa_ioc_pcifn(ioc);
202
203 rb = bfa_ioc_bar0(ioc);
204
205 ioc->ioc_regs.hfn_mbox = rb + ct_fnreg[pcifn].hfn_mbox;
206 ioc->ioc_regs.lpu_mbox = rb + ct_fnreg[pcifn].lpu_mbox;
207 ioc->ioc_regs.host_page_num_fn = rb + ct_fnreg[pcifn].hfn_pgn;
208
209 if (ioc->port_id == 0) {
210 ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
211 ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
212 ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
213 ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p0reg[pcifn].hfn;
214 ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p0reg[pcifn].lpu;
215 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
216 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
217 } else {
218 ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
219 ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_STATE_REG);
220 ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC0_STATE_REG;
221 ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p1reg[pcifn].hfn;
222 ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p1reg[pcifn].lpu;
223 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
224 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
225 }
226
227 /*
228 * PSS control registers
229 */
230 ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
231 ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
232 ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + APP_PLL_LCLK_CTL_REG);
233 ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_SCLK_CTL_REG);
234
235 /*
236 * IOC semaphore registers and serialization
237 */
238 ioc->ioc_regs.ioc_sem_reg = (rb + HOST_SEM0_REG);
239 ioc->ioc_regs.ioc_usage_sem_reg = (rb + HOST_SEM1_REG);
240 ioc->ioc_regs.ioc_init_sem_reg = (rb + HOST_SEM2_REG);
241 ioc->ioc_regs.ioc_usage_reg = (rb + BFA_FW_USE_COUNT);
242 ioc->ioc_regs.ioc_fail_sync = (rb + BFA_IOC_FAIL_SYNC);
243
244 /*
245 * sram memory access
246 */
247 ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
248 ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
249
250 /*
251 * err set reg : for notification of hb failure in fcmode
252 */
253 ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
254 }
255
256 static void
257 bfa_ioc_ct2_reg_init(struct bfa_ioc_s *ioc)
258 {
259 void __iomem *rb;
260 int port = bfa_ioc_portid(ioc);
261
262 rb = bfa_ioc_bar0(ioc);
263
264 ioc->ioc_regs.hfn_mbox = rb + ct2_reg[port].hfn_mbox;
265 ioc->ioc_regs.lpu_mbox = rb + ct2_reg[port].lpu_mbox;
266 ioc->ioc_regs.host_page_num_fn = rb + ct2_reg[port].hfn_pgn;
267 ioc->ioc_regs.hfn_mbox_cmd = rb + ct2_reg[port].hfn;
268 ioc->ioc_regs.lpu_mbox_cmd = rb + ct2_reg[port].lpu;
269 ioc->ioc_regs.lpu_read_stat = rb + ct2_reg[port].lpu_read;
270
271 if (port == 0) {
272 ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC0_HBEAT_REG;
273 ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
274 ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
275 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
276 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
277 } else {
278 ioc->ioc_regs.heartbeat = (rb + CT2_BFA_IOC1_HBEAT_REG);
279 ioc->ioc_regs.ioc_fwstate = (rb + CT2_BFA_IOC1_STATE_REG);
280 ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
281 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
282 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
283 }
284
285 /*
286 * PSS control registers
287 */
288 ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
289 ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
290 ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + CT2_APP_PLL_LCLK_CTL_REG);
291 ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + CT2_APP_PLL_SCLK_CTL_REG);
292
293 /*
294 * IOC semaphore registers and serialization
295 */
296 ioc->ioc_regs.ioc_sem_reg = (rb + CT2_HOST_SEM0_REG);
297 ioc->ioc_regs.ioc_usage_sem_reg = (rb + CT2_HOST_SEM1_REG);
298 ioc->ioc_regs.ioc_init_sem_reg = (rb + CT2_HOST_SEM2_REG);
299 ioc->ioc_regs.ioc_usage_reg = (rb + CT2_BFA_FW_USE_COUNT);
300 ioc->ioc_regs.ioc_fail_sync = (rb + CT2_BFA_IOC_FAIL_SYNC);
301
302 /*
303 * sram memory access
304 */
305 ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
306 ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
307
308 /*
309 * err set reg : for notification of hb failure in fcmode
310 */
311 ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
312 }
313
314 /*
315 * Initialize IOC to port mapping.
316 */
317
318 #define FNC_PERS_FN_SHIFT(__fn) ((__fn) * 8)
319 static void
320 bfa_ioc_ct_map_port(struct bfa_ioc_s *ioc)
321 {
322 void __iomem *rb = ioc->pcidev.pci_bar_kva;
323 u32 r32;
324
325 /*
326 * For catapult, base port id on personality register and IOC type
327 */
328 r32 = readl(rb + FNC_PERS_REG);
329 r32 >>= FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc));
330 ioc->port_id = (r32 & __F0_PORT_MAP_MK) >> __F0_PORT_MAP_SH;
331
332 bfa_trc(ioc, bfa_ioc_pcifn(ioc));
333 bfa_trc(ioc, ioc->port_id);
334 }
335
336 static void
337 bfa_ioc_ct2_map_port(struct bfa_ioc_s *ioc)
338 {
339 void __iomem *rb = ioc->pcidev.pci_bar_kva;
340 u32 r32;
341
342 r32 = readl(rb + CT2_HOSTFN_PERSONALITY0);
343 ioc->port_id = ((r32 & __FC_LL_PORT_MAP__MK) >> __FC_LL_PORT_MAP__SH);
344
345 bfa_trc(ioc, bfa_ioc_pcifn(ioc));
346 bfa_trc(ioc, ioc->port_id);
347 }
348
349 /*
350 * Set interrupt mode for a function: INTX or MSIX
351 */
352 static void
353 bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
354 {
355 void __iomem *rb = ioc->pcidev.pci_bar_kva;
356 u32 r32, mode;
357
358 r32 = readl(rb + FNC_PERS_REG);
359 bfa_trc(ioc, r32);
360
361 mode = (r32 >> FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc))) &
362 __F0_INTX_STATUS;
363
364 /*
365 * If already in desired mode, do not change anything
366 */
367 if ((!msix && mode) || (msix && !mode))
368 return;
369
370 if (msix)
371 mode = __F0_INTX_STATUS_MSIX;
372 else
373 mode = __F0_INTX_STATUS_INTA;
374
375 r32 &= ~(__F0_INTX_STATUS << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
376 r32 |= (mode << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
377 bfa_trc(ioc, r32);
378
379 writel(r32, rb + FNC_PERS_REG);
380 }
381
382 bfa_boolean_t
383 bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc_s *ioc)
384 {
385 u32 r32;
386
387 r32 = readl(ioc->ioc_regs.lpu_read_stat);
388 if (r32) {
389 writel(1, ioc->ioc_regs.lpu_read_stat);
390 return BFA_TRUE;
391 }
392
393 return BFA_FALSE;
394 }
395
396 /*
397 * Cleanup hw semaphore and usecnt registers
398 */
399 static void
400 bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
401 {
402
403 if (bfa_ioc_is_cna(ioc)) {
404 bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
405 writel(0, ioc->ioc_regs.ioc_usage_reg);
406 readl(ioc->ioc_regs.ioc_usage_sem_reg);
407 writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
408 }
409
410 /*
411 * Read the hw sem reg to make sure that it is locked
412 * before we clear it. If it is not locked, writing 1
413 * will lock it instead of clearing it.
414 */
415 readl(ioc->ioc_regs.ioc_sem_reg);
416 writel(1, ioc->ioc_regs.ioc_sem_reg);
417 }
418
419 static bfa_boolean_t
420 bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc)
421 {
422 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
423 uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
424
425 /*
426 * Driver load time. If the sync required bit for this PCI fn
427 * is set, it is due to an unclean exit by the driver for this
428 * PCI fn in the previous incarnation. Whoever comes here first
429 * should clean it up, no matter which PCI fn.
430 */
431
432 if (sync_reqd & bfa_ioc_ct_sync_pos(ioc)) {
433 writel(0, ioc->ioc_regs.ioc_fail_sync);
434 writel(1, ioc->ioc_regs.ioc_usage_reg);
435 writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
436 writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
437 return BFA_TRUE;
438 }
439
440 return bfa_ioc_ct_sync_complete(ioc);
441 }
442
443 /*
444 * Synchronized IOC failure processing routines
445 */
446 static void
447 bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc)
448 {
449 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
450 uint32_t sync_pos = bfa_ioc_ct_sync_reqd_pos(ioc);
451
452 writel((r32 | sync_pos), ioc->ioc_regs.ioc_fail_sync);
453 }
454
455 static void
456 bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc)
457 {
458 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
459 uint32_t sync_msk = bfa_ioc_ct_sync_reqd_pos(ioc) |
460 bfa_ioc_ct_sync_pos(ioc);
461
462 writel((r32 & ~sync_msk), ioc->ioc_regs.ioc_fail_sync);
463 }
464
465 static void
466 bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc)
467 {
468 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
469
470 writel((r32 | bfa_ioc_ct_sync_pos(ioc)),
471 ioc->ioc_regs.ioc_fail_sync);
472 }
473
474 static bfa_boolean_t
475 bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc)
476 {
477 uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
478 uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
479 uint32_t sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
480 uint32_t tmp_ackd;
481
482 if (sync_ackd == 0)
483 return BFA_TRUE;
484
485 /*
486 * The check below is to see whether any other PCI fn
487 * has reinitialized the ASIC (reset sync_ackd bits)
488 * and failed again while this IOC was waiting for hw
489 * semaphore (in bfa_iocpf_sm_semwait()).
490 */
491 tmp_ackd = sync_ackd;
492 if ((sync_reqd & bfa_ioc_ct_sync_pos(ioc)) &&
493 !(sync_ackd & bfa_ioc_ct_sync_pos(ioc)))
494 sync_ackd |= bfa_ioc_ct_sync_pos(ioc);
495
496 if (sync_reqd == sync_ackd) {
497 writel(bfa_ioc_ct_clear_sync_ackd(r32),
498 ioc->ioc_regs.ioc_fail_sync);
499 writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
500 writel(BFI_IOC_FAIL, ioc->ioc_regs.alt_ioc_fwstate);
501 return BFA_TRUE;
502 }
503
504 /*
505 * If another PCI fn reinitialized and failed again while
506 * this IOC was waiting for hw sem, the sync_ackd bit for
507 * this IOC need to be set again to allow reinitialization.
508 */
509 if (tmp_ackd != sync_ackd)
510 writel((r32 | sync_ackd), ioc->ioc_regs.ioc_fail_sync);
511
512 return BFA_FALSE;
513 }
514
515 /**
516 * Called from bfa_ioc_attach() to map asic specific calls.
517 */
518 static void
519 bfa_ioc_set_ctx_hwif(struct bfa_ioc_s *ioc, struct bfa_ioc_hwif_s *hwif)
520 {
521 hwif->ioc_firmware_lock = bfa_ioc_ct_firmware_lock;
522 hwif->ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock;
523 hwif->ioc_notify_fail = bfa_ioc_ct_notify_fail;
524 hwif->ioc_ownership_reset = bfa_ioc_ct_ownership_reset;
525 hwif->ioc_sync_start = bfa_ioc_ct_sync_start;
526 hwif->ioc_sync_join = bfa_ioc_ct_sync_join;
527 hwif->ioc_sync_leave = bfa_ioc_ct_sync_leave;
528 hwif->ioc_sync_ack = bfa_ioc_ct_sync_ack;
529 hwif->ioc_sync_complete = bfa_ioc_ct_sync_complete;
530 }
531
532 /**
533 * Called from bfa_ioc_attach() to map asic specific calls.
534 */
535 void
536 bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc)
537 {
538 bfa_ioc_set_ctx_hwif(ioc, &hwif_ct);
539
540 hwif_ct.ioc_pll_init = bfa_ioc_ct_pll_init;
541 hwif_ct.ioc_reg_init = bfa_ioc_ct_reg_init;
542 hwif_ct.ioc_map_port = bfa_ioc_ct_map_port;
543 hwif_ct.ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set;
544 ioc->ioc_hwif = &hwif_ct;
545 }
546
547 /**
548 * Called from bfa_ioc_attach() to map asic specific calls.
549 */
550 void
551 bfa_ioc_set_ct2_hwif(struct bfa_ioc_s *ioc)
552 {
553 bfa_ioc_set_ctx_hwif(ioc, &hwif_ct2);
554
555 hwif_ct2.ioc_pll_init = bfa_ioc_ct2_pll_init;
556 hwif_ct2.ioc_reg_init = bfa_ioc_ct2_reg_init;
557 hwif_ct2.ioc_map_port = bfa_ioc_ct2_map_port;
558 hwif_ct2.ioc_lpu_read_stat = bfa_ioc_ct2_lpu_read_stat;
559 hwif_ct2.ioc_isr_mode_set = NULL;
560 ioc->ioc_hwif = &hwif_ct2;
561 }
562
563 /*
564 * Workaround for MSI-X resource allocation for catapult-2 with no asic block
565 */
566 #define HOSTFN_MSIX_DEFAULT 64
567 #define HOSTFN_MSIX_VT_INDEX_MBOX_ERR 0x30138
568 #define HOSTFN_MSIX_VT_OFST_NUMVT 0x3013c
569 #define __MSIX_VT_NUMVT__MK 0x003ff800
570 #define __MSIX_VT_NUMVT__SH 11
571 #define __MSIX_VT_NUMVT_(_v) ((_v) << __MSIX_VT_NUMVT__SH)
572 #define __MSIX_VT_OFST_ 0x000007ff
573 void
574 bfa_ioc_ct2_poweron(struct bfa_ioc_s *ioc)
575 {
576 void __iomem *rb = ioc->pcidev.pci_bar_kva;
577 u32 r32;
578
579 r32 = readl(rb + HOSTFN_MSIX_VT_OFST_NUMVT);
580 if (r32 & __MSIX_VT_NUMVT__MK) {
581 writel(r32 & __MSIX_VT_OFST_,
582 rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
583 return;
584 }
585
586 writel(__MSIX_VT_NUMVT_(HOSTFN_MSIX_DEFAULT - 1) |
587 HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
588 rb + HOSTFN_MSIX_VT_OFST_NUMVT);
589 writel(HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
590 rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
591 }
592
593 bfa_status_t
594 bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
595 {
596 u32 pll_sclk, pll_fclk, r32;
597 bfa_boolean_t fcmode = (mode == BFI_ASIC_MODE_FC);
598
599 pll_sclk = __APP_PLL_SCLK_LRESETN | __APP_PLL_SCLK_ENARST |
600 __APP_PLL_SCLK_RSEL200500 | __APP_PLL_SCLK_P0_1(3U) |
601 __APP_PLL_SCLK_JITLMT0_1(3U) |
602 __APP_PLL_SCLK_CNTLMT0_1(1U);
603 pll_fclk = __APP_PLL_LCLK_LRESETN | __APP_PLL_LCLK_ENARST |
604 __APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
605 __APP_PLL_LCLK_JITLMT0_1(3U) |
606 __APP_PLL_LCLK_CNTLMT0_1(1U);
607
608 if (fcmode) {
609 writel(0, (rb + OP_MODE));
610 writel(__APP_EMS_CMLCKSEL | __APP_EMS_REFCKBUFEN2 |
611 __APP_EMS_CHANNEL_SEL, (rb + ETH_MAC_SER_REG));
612 } else {
613 writel(__GLOBAL_FCOE_MODE, (rb + OP_MODE));
614 writel(__APP_EMS_REFCKBUFEN1, (rb + ETH_MAC_SER_REG));
615 }
616 writel(BFI_IOC_UNINIT, (rb + BFA_IOC0_STATE_REG));
617 writel(BFI_IOC_UNINIT, (rb + BFA_IOC1_STATE_REG));
618 writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
619 writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
620 writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
621 writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
622 writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
623 writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
624 writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET,
625 rb + APP_PLL_SCLK_CTL_REG);
626 writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET,
627 rb + APP_PLL_LCLK_CTL_REG);
628 writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET |
629 __APP_PLL_SCLK_ENABLE, rb + APP_PLL_SCLK_CTL_REG);
630 writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET |
631 __APP_PLL_LCLK_ENABLE, rb + APP_PLL_LCLK_CTL_REG);
632 readl(rb + HOSTFN0_INT_MSK);
633 udelay(2000);
634 writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
635 writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
636 writel(pll_sclk | __APP_PLL_SCLK_ENABLE, rb + APP_PLL_SCLK_CTL_REG);
637 writel(pll_fclk | __APP_PLL_LCLK_ENABLE, rb + APP_PLL_LCLK_CTL_REG);
638
639 if (!fcmode) {
640 writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P0));
641 writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P1));
642 }
643 r32 = readl((rb + PSS_CTL_REG));
644 r32 &= ~__PSS_LMEM_RESET;
645 writel(r32, (rb + PSS_CTL_REG));
646 udelay(1000);
647 if (!fcmode) {
648 writel(0, (rb + PMM_1T_RESET_REG_P0));
649 writel(0, (rb + PMM_1T_RESET_REG_P1));
650 }
651
652 writel(__EDRAM_BISTR_START, (rb + MBIST_CTL_REG));
653 udelay(1000);
654 r32 = readl((rb + MBIST_STAT_REG));
655 writel(0, (rb + MBIST_CTL_REG));
656 return BFA_STATUS_OK;
657 }
658
659 static void
660 bfa_ioc_ct2_sclk_init(void __iomem *rb)
661 {
662 u32 r32;
663
664 /*
665 * put s_clk PLL and PLL FSM in reset
666 */
667 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
668 r32 &= ~(__APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN);
669 r32 |= (__APP_PLL_SCLK_ENARST | __APP_PLL_SCLK_BYPASS |
670 __APP_PLL_SCLK_LOGIC_SOFT_RESET);
671 writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
672
673 /*
674 * Ignore mode and program for the max clock (which is FC16)
675 * Firmware/NFC will do the PLL init appropiately
676 */
677 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
678 r32 &= ~(__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2);
679 writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
680
681 /*
682 * while doing PLL init dont clock gate ethernet subsystem
683 */
684 r32 = readl((rb + CT2_CHIP_MISC_PRG));
685 writel(r32 | __ETH_CLK_ENABLE_PORT0, (rb + CT2_CHIP_MISC_PRG));
686
687 r32 = readl((rb + CT2_PCIE_MISC_REG));
688 writel(r32 | __ETH_CLK_ENABLE_PORT1, (rb + CT2_PCIE_MISC_REG));
689
690 /*
691 * set sclk value
692 */
693 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
694 r32 &= (__P_SCLK_PLL_LOCK | __APP_PLL_SCLK_REFCLK_SEL |
695 __APP_PLL_SCLK_CLK_DIV2);
696 writel(r32 | 0x1061731b, (rb + CT2_APP_PLL_SCLK_CTL_REG));
697
698 /*
699 * poll for s_clk lock or delay 1ms
700 */
701 udelay(1000);
702 }
703
704 static void
705 bfa_ioc_ct2_lclk_init(void __iomem *rb)
706 {
707 u32 r32;
708
709 /*
710 * put l_clk PLL and PLL FSM in reset
711 */
712 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
713 r32 &= ~(__APP_PLL_LCLK_ENABLE | __APP_PLL_LCLK_LRESETN);
714 r32 |= (__APP_PLL_LCLK_ENARST | __APP_PLL_LCLK_BYPASS |
715 __APP_PLL_LCLK_LOGIC_SOFT_RESET);
716 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
717
718 /*
719 * set LPU speed (set for FC16 which will work for other modes)
720 */
721 r32 = readl((rb + CT2_CHIP_MISC_PRG));
722 writel(r32, (rb + CT2_CHIP_MISC_PRG));
723
724 /*
725 * set LPU half speed (set for FC16 which will work for other modes)
726 */
727 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
728 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
729
730 /*
731 * set lclk for mode (set for FC16)
732 */
733 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
734 r32 &= (__P_LCLK_PLL_LOCK | __APP_LPUCLK_HALFSPEED);
735 r32 |= 0x20c1731b;
736 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
737
738 /*
739 * poll for s_clk lock or delay 1ms
740 */
741 udelay(1000);
742 }
743
744 static void
745 bfa_ioc_ct2_mem_init(void __iomem *rb)
746 {
747 u32 r32;
748
749 r32 = readl((rb + PSS_CTL_REG));
750 r32 &= ~__PSS_LMEM_RESET;
751 writel(r32, (rb + PSS_CTL_REG));
752 udelay(1000);
753
754 writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
755 udelay(1000);
756 writel(0, (rb + CT2_MBIST_CTL_REG));
757 }
758
759 void
760 bfa_ioc_ct2_mac_reset(void __iomem *rb)
761 {
762 u32 r32;
763
764 bfa_ioc_ct2_sclk_init(rb);
765 bfa_ioc_ct2_lclk_init(rb);
766
767 /*
768 * release soft reset on s_clk & l_clk
769 */
770 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
771 writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
772 (rb + CT2_APP_PLL_SCLK_CTL_REG));
773
774 /*
775 * release soft reset on s_clk & l_clk
776 */
777 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
778 writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
779 (rb + CT2_APP_PLL_LCLK_CTL_REG));
780
781 /* put port0, port1 MAC & AHB in reset */
782 writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
783 rb + CT2_CSI_MAC_CONTROL_REG(0));
784 writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
785 rb + CT2_CSI_MAC_CONTROL_REG(1));
786 }
787
788 #define CT2_NFC_MAX_DELAY 1000
789 bfa_status_t
790 bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
791 {
792 u32 wgn, r32;
793 int i;
794
795 /*
796 * Initialize PLL if not already done by NFC
797 */
798 wgn = readl(rb + CT2_WGN_STATUS);
799 if (!(wgn & __GLBL_PF_VF_CFG_RDY)) {
800 writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_SET_REG);
801 for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
802 r32 = readl(rb + CT2_NFC_CSR_SET_REG);
803 if (r32 & __NFC_CONTROLLER_HALTED)
804 break;
805 udelay(1000);
806 }
807 }
808
809 /*
810 * Mask the interrupts and clear any
811 * pending interrupts.
812 */
813 writel(1, (rb + CT2_LPU0_HOSTFN_MBOX0_MSK));
814 writel(1, (rb + CT2_LPU1_HOSTFN_MBOX0_MSK));
815
816 r32 = readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
817 if (r32 == 1) {
818 writel(1, (rb + CT2_LPU0_HOSTFN_CMD_STAT));
819 readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
820 }
821 r32 = readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
822 if (r32 == 1) {
823 writel(1, (rb + CT2_LPU1_HOSTFN_CMD_STAT));
824 readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
825 }
826
827 bfa_ioc_ct2_mac_reset(rb);
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 /*
839 * release soft reset on s_clk & l_clk
840 */
841 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
842 writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
843 (rb + CT2_APP_PLL_LCLK_CTL_REG));
844
845 /*
846 * Announce flash device presence, if flash was corrupted.
847 */
848 if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
849 r32 = readl((rb + PSS_GPIO_OUT_REG));
850 writel(r32 & ~1, (rb + PSS_GPIO_OUT_REG));
851 r32 = readl((rb + PSS_GPIO_OE_REG));
852 writel(r32 | 1, (rb + PSS_GPIO_OE_REG));
853 }
854
855 bfa_ioc_ct2_mem_init(rb);
856
857 writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC0_STATE_REG));
858 writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC1_STATE_REG));
859 return BFA_STATUS_OK;
860 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree