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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / ethernet / brocade / bna / bfa_ioc_ct.c
blob348479bbfa3a42b953a111bb06c31cec5e4917a8
1 /*
2 * Linux network driver for Brocade Converged Network Adapter.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License (GPL) Version 2 as
6 * published by the Free Software Foundation
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 */
13 /*
14 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
15 * All rights reserved
16 * www.brocade.com
17 */
18
19 #include "bfa_ioc.h"
20 #include "cna.h"
21 #include "bfi.h"
22 #include "bfi_reg.h"
23 #include "bfa_defs.h"
24
25 #define bfa_ioc_ct_sync_pos(__ioc) \
26 ((u32) (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 bool bfa_ioc_ct_firmware_lock(struct bfa_ioc *ioc);
38 static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc *ioc);
39 static void bfa_ioc_ct_reg_init(struct bfa_ioc *ioc);
40 static void bfa_ioc_ct2_reg_init(struct bfa_ioc *ioc);
41 static void bfa_ioc_ct_map_port(struct bfa_ioc *ioc);
42 static void bfa_ioc_ct2_map_port(struct bfa_ioc *ioc);
43 static void bfa_ioc_ct_isr_mode_set(struct bfa_ioc *ioc, bool msix);
44 static void bfa_ioc_ct_notify_fail(struct bfa_ioc *ioc);
45 static void bfa_ioc_ct_ownership_reset(struct bfa_ioc *ioc);
46 static bool bfa_ioc_ct_sync_start(struct bfa_ioc *ioc);
47 static void bfa_ioc_ct_sync_join(struct bfa_ioc *ioc);
48 static void bfa_ioc_ct_sync_leave(struct bfa_ioc *ioc);
49 static void bfa_ioc_ct_sync_ack(struct bfa_ioc *ioc);
50 static bool bfa_ioc_ct_sync_complete(struct bfa_ioc *ioc);
51 static enum bfa_status bfa_ioc_ct_pll_init(void __iomem *rb,
52 enum bfi_asic_mode asic_mode);
53 static enum bfa_status bfa_ioc_ct2_pll_init(void __iomem *rb,
54 enum bfi_asic_mode asic_mode);
55 static bool bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc *ioc);
56
57 static const struct bfa_ioc_hwif nw_hwif_ct = {
58 .ioc_pll_init = bfa_ioc_ct_pll_init,
59 .ioc_firmware_lock = bfa_ioc_ct_firmware_lock,
60 .ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock,
61 .ioc_reg_init = bfa_ioc_ct_reg_init,
62 .ioc_map_port = bfa_ioc_ct_map_port,
63 .ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set,
64 .ioc_notify_fail = bfa_ioc_ct_notify_fail,
65 .ioc_ownership_reset = bfa_ioc_ct_ownership_reset,
66 .ioc_sync_start = bfa_ioc_ct_sync_start,
67 .ioc_sync_join = bfa_ioc_ct_sync_join,
68 .ioc_sync_leave = bfa_ioc_ct_sync_leave,
69 .ioc_sync_ack = bfa_ioc_ct_sync_ack,
70 .ioc_sync_complete = bfa_ioc_ct_sync_complete,
71 };
72
73 static const struct bfa_ioc_hwif nw_hwif_ct2 = {
74 .ioc_pll_init = bfa_ioc_ct2_pll_init,
75 .ioc_firmware_lock = bfa_ioc_ct_firmware_lock,
76 .ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock,
77 .ioc_reg_init = bfa_ioc_ct2_reg_init,
78 .ioc_map_port = bfa_ioc_ct2_map_port,
79 .ioc_lpu_read_stat = bfa_ioc_ct2_lpu_read_stat,
80 .ioc_isr_mode_set = NULL,
81 .ioc_notify_fail = bfa_ioc_ct_notify_fail,
82 .ioc_ownership_reset = bfa_ioc_ct_ownership_reset,
83 .ioc_sync_start = bfa_ioc_ct_sync_start,
84 .ioc_sync_join = bfa_ioc_ct_sync_join,
85 .ioc_sync_leave = bfa_ioc_ct_sync_leave,
86 .ioc_sync_ack = bfa_ioc_ct_sync_ack,
87 .ioc_sync_complete = bfa_ioc_ct_sync_complete,
88 };
89
90 /**
91 * Called from bfa_ioc_attach() to map asic specific calls.
92 */
93 void
94 bfa_nw_ioc_set_ct_hwif(struct bfa_ioc *ioc)
95 {
96 ioc->ioc_hwif = &nw_hwif_ct;
97 }
98
99 void
100 bfa_nw_ioc_set_ct2_hwif(struct bfa_ioc *ioc)
101 {
102 ioc->ioc_hwif = &nw_hwif_ct2;
103 }
104
105 /**
106 * Return true if firmware of current driver matches the running firmware.
107 */
108 static bool
109 bfa_ioc_ct_firmware_lock(struct bfa_ioc *ioc)
110 {
111 enum bfi_ioc_state ioc_fwstate;
112 u32 usecnt;
113 struct bfi_ioc_image_hdr fwhdr;
114
115 /**
116 * If bios boot (flash based) -- do not increment usage count
117 */
118 if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
119 BFA_IOC_FWIMG_MINSZ)
120 return true;
121
122 bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
123 usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
124
125 /**
126 * If usage count is 0, always return TRUE.
127 */
128 if (usecnt == 0) {
129 writel(1, ioc->ioc_regs.ioc_usage_reg);
130 bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
131 writel(0, ioc->ioc_regs.ioc_fail_sync);
132 return true;
133 }
134
135 ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
136
137 /**
138 * Use count cannot be non-zero and chip in uninitialized state.
139 */
140 BUG_ON(!(ioc_fwstate != BFI_IOC_UNINIT));
141
142 /**
143 * Check if another driver with a different firmware is active
144 */
145 bfa_nw_ioc_fwver_get(ioc, &fwhdr);
146 if (!bfa_nw_ioc_fwver_cmp(ioc, &fwhdr)) {
147 bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
148 return false;
149 }
150
151 /**
152 * Same firmware version. Increment the reference count.
153 */
154 usecnt++;
155 writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
156 bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
157 return true;
158 }
159
160 static void
161 bfa_ioc_ct_firmware_unlock(struct bfa_ioc *ioc)
162 {
163 u32 usecnt;
164
165 /**
166 * If bios boot (flash based) -- do not decrement usage count
167 */
168 if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
169 BFA_IOC_FWIMG_MINSZ)
170 return;
171
172 /**
173 * decrement usage count
174 */
175 bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
176 usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
177 BUG_ON(!(usecnt > 0));
178
179 usecnt--;
180 writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
181
182 bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
183 }
184
185 /**
186 * Notify other functions on HB failure.
187 */
188 static void
189 bfa_ioc_ct_notify_fail(struct bfa_ioc *ioc)
190 {
191 writel(__FW_INIT_HALT_P, ioc->ioc_regs.ll_halt);
192 writel(__FW_INIT_HALT_P, ioc->ioc_regs.alt_ll_halt);
193 /* Wait for halt to take effect */
194 readl(ioc->ioc_regs.ll_halt);
195 readl(ioc->ioc_regs.alt_ll_halt);
196 }
197
198 /**
199 * Host to LPU mailbox message addresses
200 */
201 static const struct {
202 u32 hfn_mbox;
203 u32 lpu_mbox;
204 u32 hfn_pgn;
205 } ct_fnreg[] = {
206 { HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
207 { HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 },
208 { HOSTFN2_LPU_MBOX0_0, LPU_HOSTFN2_MBOX0_0, HOST_PAGE_NUM_FN2 },
209 { HOSTFN3_LPU_MBOX0_8, LPU_HOSTFN3_MBOX0_8, HOST_PAGE_NUM_FN3 }
210 };
211
212 /**
213 * Host <-> LPU mailbox command/status registers - port 0
214 */
215 static const struct {
216 u32 hfn;
217 u32 lpu;
218 } ct_p0reg[] = {
219 { HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
220 { HOSTFN1_LPU0_CMD_STAT, LPU0_HOSTFN1_CMD_STAT },
221 { HOSTFN2_LPU0_CMD_STAT, LPU0_HOSTFN2_CMD_STAT },
222 { HOSTFN3_LPU0_CMD_STAT, LPU0_HOSTFN3_CMD_STAT }
223 };
224
225 /**
226 * Host <-> LPU mailbox command/status registers - port 1
227 */
228 static const struct {
229 u32 hfn;
230 u32 lpu;
231 } ct_p1reg[] = {
232 { HOSTFN0_LPU1_CMD_STAT, LPU1_HOSTFN0_CMD_STAT },
233 { HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT },
234 { HOSTFN2_LPU1_CMD_STAT, LPU1_HOSTFN2_CMD_STAT },
235 { HOSTFN3_LPU1_CMD_STAT, LPU1_HOSTFN3_CMD_STAT }
236 };
237
238 static const struct {
239 u32 hfn_mbox;
240 u32 lpu_mbox;
241 u32 hfn_pgn;
242 u32 hfn;
243 u32 lpu;
244 u32 lpu_read;
245 } ct2_reg[] = {
246 { CT2_HOSTFN_LPU0_MBOX0, CT2_LPU0_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
247 CT2_HOSTFN_LPU0_CMD_STAT, CT2_LPU0_HOSTFN_CMD_STAT,
248 CT2_HOSTFN_LPU0_READ_STAT},
249 { CT2_HOSTFN_LPU1_MBOX0, CT2_LPU1_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
250 CT2_HOSTFN_LPU1_CMD_STAT, CT2_LPU1_HOSTFN_CMD_STAT,
251 CT2_HOSTFN_LPU1_READ_STAT},
252 };
253
254 static void
255 bfa_ioc_ct_reg_init(struct bfa_ioc *ioc)
256 {
257 void __iomem *rb;
258 int pcifn = bfa_ioc_pcifn(ioc);
259
260 rb = bfa_ioc_bar0(ioc);
261
262 ioc->ioc_regs.hfn_mbox = rb + ct_fnreg[pcifn].hfn_mbox;
263 ioc->ioc_regs.lpu_mbox = rb + ct_fnreg[pcifn].lpu_mbox;
264 ioc->ioc_regs.host_page_num_fn = rb + ct_fnreg[pcifn].hfn_pgn;
265
266 if (ioc->port_id == 0) {
267 ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
268 ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
269 ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
270 ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p0reg[pcifn].hfn;
271 ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p0reg[pcifn].lpu;
272 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
273 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
274 } else {
275 ioc->ioc_regs.heartbeat = rb + BFA_IOC1_HBEAT_REG;
276 ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC1_STATE_REG;
277 ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC0_STATE_REG;
278 ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p1reg[pcifn].hfn;
279 ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p1reg[pcifn].lpu;
280 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
281 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
282 }
283
284 /*
285 * PSS control registers
286 */
287 ioc->ioc_regs.pss_ctl_reg = rb + PSS_CTL_REG;
288 ioc->ioc_regs.pss_err_status_reg = rb + PSS_ERR_STATUS_REG;
289 ioc->ioc_regs.app_pll_fast_ctl_reg = rb + APP_PLL_LCLK_CTL_REG;
290 ioc->ioc_regs.app_pll_slow_ctl_reg = rb + APP_PLL_SCLK_CTL_REG;
291
292 /*
293 * IOC semaphore registers and serialization
294 */
295 ioc->ioc_regs.ioc_sem_reg = rb + HOST_SEM0_REG;
296 ioc->ioc_regs.ioc_usage_sem_reg = rb + HOST_SEM1_REG;
297 ioc->ioc_regs.ioc_init_sem_reg = rb + HOST_SEM2_REG;
298 ioc->ioc_regs.ioc_usage_reg = rb + BFA_FW_USE_COUNT;
299 ioc->ioc_regs.ioc_fail_sync = rb + BFA_IOC_FAIL_SYNC;
300
301 /**
302 * sram memory access
303 */
304 ioc->ioc_regs.smem_page_start = rb + PSS_SMEM_PAGE_START;
305 ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
306
307 /*
308 * err set reg : for notification of hb failure in fcmode
309 */
310 ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
311 }
312
313 static void
314 bfa_ioc_ct2_reg_init(struct bfa_ioc *ioc)
315 {
316 void __iomem *rb;
317 int port = bfa_ioc_portid(ioc);
318
319 rb = bfa_ioc_bar0(ioc);
320
321 ioc->ioc_regs.hfn_mbox = rb + ct2_reg[port].hfn_mbox;
322 ioc->ioc_regs.lpu_mbox = rb + ct2_reg[port].lpu_mbox;
323 ioc->ioc_regs.host_page_num_fn = rb + ct2_reg[port].hfn_pgn;
324 ioc->ioc_regs.hfn_mbox_cmd = rb + ct2_reg[port].hfn;
325 ioc->ioc_regs.lpu_mbox_cmd = rb + ct2_reg[port].lpu;
326 ioc->ioc_regs.lpu_read_stat = rb + ct2_reg[port].lpu_read;
327
328 if (port == 0) {
329 ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC0_HBEAT_REG;
330 ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
331 ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
332 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
333 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
334 } else {
335 ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC1_HBEAT_REG;
336 ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
337 ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
338 ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
339 ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
340 }
341
342 /*
343 * PSS control registers
344 */
345 ioc->ioc_regs.pss_ctl_reg = rb + PSS_CTL_REG;
346 ioc->ioc_regs.pss_err_status_reg = rb + PSS_ERR_STATUS_REG;
347 ioc->ioc_regs.app_pll_fast_ctl_reg = rb + CT2_APP_PLL_LCLK_CTL_REG;
348 ioc->ioc_regs.app_pll_slow_ctl_reg = rb + CT2_APP_PLL_SCLK_CTL_REG;
349
350 /*
351 * IOC semaphore registers and serialization
352 */
353 ioc->ioc_regs.ioc_sem_reg = rb + CT2_HOST_SEM0_REG;
354 ioc->ioc_regs.ioc_usage_sem_reg = rb + CT2_HOST_SEM1_REG;
355 ioc->ioc_regs.ioc_init_sem_reg = rb + CT2_HOST_SEM2_REG;
356 ioc->ioc_regs.ioc_usage_reg = rb + CT2_BFA_FW_USE_COUNT;
357 ioc->ioc_regs.ioc_fail_sync = rb + CT2_BFA_IOC_FAIL_SYNC;
358
359 /**
360 * sram memory access
361 */
362 ioc->ioc_regs.smem_page_start = rb + PSS_SMEM_PAGE_START;
363 ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
364
365 /*
366 * err set reg : for notification of hb failure in fcmode
367 */
368 ioc->ioc_regs.err_set = rb + ERR_SET_REG;
369 }
370
371 /**
372 * Initialize IOC to port mapping.
373 */
374
375 #define FNC_PERS_FN_SHIFT(__fn) ((__fn) * 8)
376 static void
377 bfa_ioc_ct_map_port(struct bfa_ioc *ioc)
378 {
379 void __iomem *rb = ioc->pcidev.pci_bar_kva;
380 u32 r32;
381
382 /**
383 * For catapult, base port id on personality register and IOC type
384 */
385 r32 = readl(rb + FNC_PERS_REG);
386 r32 >>= FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc));
387 ioc->port_id = (r32 & __F0_PORT_MAP_MK) >> __F0_PORT_MAP_SH;
388
389 }
390
391 static void
392 bfa_ioc_ct2_map_port(struct bfa_ioc *ioc)
393 {
394 void __iomem *rb = ioc->pcidev.pci_bar_kva;
395 u32 r32;
396
397 r32 = readl(rb + CT2_HOSTFN_PERSONALITY0);
398 ioc->port_id = ((r32 & __FC_LL_PORT_MAP__MK) >> __FC_LL_PORT_MAP__SH);
399 }
400
401 /**
402 * Set interrupt mode for a function: INTX or MSIX
403 */
404 static void
405 bfa_ioc_ct_isr_mode_set(struct bfa_ioc *ioc, bool msix)
406 {
407 void __iomem *rb = ioc->pcidev.pci_bar_kva;
408 u32 r32, mode;
409
410 r32 = readl(rb + FNC_PERS_REG);
411
412 mode = (r32 >> FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc))) &
413 __F0_INTX_STATUS;
414
415 /**
416 * If already in desired mode, do not change anything
417 */
418 if ((!msix && mode) || (msix && !mode))
419 return;
420
421 if (msix)
422 mode = __F0_INTX_STATUS_MSIX;
423 else
424 mode = __F0_INTX_STATUS_INTA;
425
426 r32 &= ~(__F0_INTX_STATUS << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
427 r32 |= (mode << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
428
429 writel(r32, rb + FNC_PERS_REG);
430 }
431
432 static bool
433 bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc *ioc)
434 {
435 u32 r32;
436
437 r32 = readl(ioc->ioc_regs.lpu_read_stat);
438 if (r32) {
439 writel(1, ioc->ioc_regs.lpu_read_stat);
440 return true;
441 }
442
443 return false;
444 }
445
446 /**
447 * MSI-X resource allocation for 1860 with no asic block
448 */
449 #define HOSTFN_MSIX_DEFAULT 64
450 #define HOSTFN_MSIX_VT_INDEX_MBOX_ERR 0x30138
451 #define HOSTFN_MSIX_VT_OFST_NUMVT 0x3013c
452 #define __MSIX_VT_NUMVT__MK 0x003ff800
453 #define __MSIX_VT_NUMVT__SH 11
454 #define __MSIX_VT_NUMVT_(_v) ((_v) << __MSIX_VT_NUMVT__SH)
455 #define __MSIX_VT_OFST_ 0x000007ff
456 void
457 bfa_nw_ioc_ct2_poweron(struct bfa_ioc *ioc)
458 {
459 void __iomem *rb = ioc->pcidev.pci_bar_kva;
460 u32 r32;
461
462 r32 = readl(rb + HOSTFN_MSIX_VT_OFST_NUMVT);
463 if (r32 & __MSIX_VT_NUMVT__MK) {
464 writel(r32 & __MSIX_VT_OFST_,
465 rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
466 return;
467 }
468
469 writel(__MSIX_VT_NUMVT_(HOSTFN_MSIX_DEFAULT - 1) |
470 HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
471 rb + HOSTFN_MSIX_VT_OFST_NUMVT);
472 writel(HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
473 rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
474 }
475
476 /**
477 * Cleanup hw semaphore and usecnt registers
478 */
479 static void
480 bfa_ioc_ct_ownership_reset(struct bfa_ioc *ioc)
481 {
482 bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
483 writel(0, ioc->ioc_regs.ioc_usage_reg);
484 bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
485
486 /*
487 * Read the hw sem reg to make sure that it is locked
488 * before we clear it. If it is not locked, writing 1
489 * will lock it instead of clearing it.
490 */
491 readl(ioc->ioc_regs.ioc_sem_reg);
492 bfa_nw_ioc_hw_sem_release(ioc);
493 }
494
495 /**
496 * Synchronized IOC failure processing routines
497 */
498 static bool
499 bfa_ioc_ct_sync_start(struct bfa_ioc *ioc)
500 {
501 u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
502 u32 sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
503
504 /*
505 * Driver load time. If the sync required bit for this PCI fn
506 * is set, it is due to an unclean exit by the driver for this
507 * PCI fn in the previous incarnation. Whoever comes here first
508 * should clean it up, no matter which PCI fn.
509 */
510
511 if (sync_reqd & bfa_ioc_ct_sync_pos(ioc)) {
512 writel(0, ioc->ioc_regs.ioc_fail_sync);
513 writel(1, ioc->ioc_regs.ioc_usage_reg);
514 writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
515 writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
516 return true;
517 }
518
519 return bfa_ioc_ct_sync_complete(ioc);
520 }
521 /**
522 * Synchronized IOC failure processing routines
523 */
524 static void
525 bfa_ioc_ct_sync_join(struct bfa_ioc *ioc)
526 {
527 u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
528 u32 sync_pos = bfa_ioc_ct_sync_reqd_pos(ioc);
529
530 writel((r32 | sync_pos), ioc->ioc_regs.ioc_fail_sync);
531 }
532
533 static void
534 bfa_ioc_ct_sync_leave(struct bfa_ioc *ioc)
535 {
536 u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
537 u32 sync_msk = bfa_ioc_ct_sync_reqd_pos(ioc) |
538 bfa_ioc_ct_sync_pos(ioc);
539
540 writel((r32 & ~sync_msk), ioc->ioc_regs.ioc_fail_sync);
541 }
542
543 static void
544 bfa_ioc_ct_sync_ack(struct bfa_ioc *ioc)
545 {
546 u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
547
548 writel((r32 | bfa_ioc_ct_sync_pos(ioc)), ioc->ioc_regs.ioc_fail_sync);
549 }
550
551 static bool
552 bfa_ioc_ct_sync_complete(struct bfa_ioc *ioc)
553 {
554 u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
555 u32 sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
556 u32 sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
557 u32 tmp_ackd;
558
559 if (sync_ackd == 0)
560 return true;
561
562 /**
563 * The check below is to see whether any other PCI fn
564 * has reinitialized the ASIC (reset sync_ackd bits)
565 * and failed again while this IOC was waiting for hw
566 * semaphore (in bfa_iocpf_sm_semwait()).
567 */
568 tmp_ackd = sync_ackd;
569 if ((sync_reqd & bfa_ioc_ct_sync_pos(ioc)) &&
570 !(sync_ackd & bfa_ioc_ct_sync_pos(ioc)))
571 sync_ackd |= bfa_ioc_ct_sync_pos(ioc);
572
573 if (sync_reqd == sync_ackd) {
574 writel(bfa_ioc_ct_clear_sync_ackd(r32),
575 ioc->ioc_regs.ioc_fail_sync);
576 writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
577 writel(BFI_IOC_FAIL, ioc->ioc_regs.alt_ioc_fwstate);
578 return true;
579 }
580
581 /**
582 * If another PCI fn reinitialized and failed again while
583 * this IOC was waiting for hw sem, the sync_ackd bit for
584 * this IOC need to be set again to allow reinitialization.
585 */
586 if (tmp_ackd != sync_ackd)
587 writel((r32 | sync_ackd), ioc->ioc_regs.ioc_fail_sync);
588
589 return false;
590 }
591
592 static enum bfa_status
593 bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode asic_mode)
594 {
595 u32 pll_sclk, pll_fclk, r32;
596 bool fcmode = (asic_mode == BFI_ASIC_MODE_FC);
597
598 pll_sclk = __APP_PLL_SCLK_LRESETN | __APP_PLL_SCLK_ENARST |
599 __APP_PLL_SCLK_RSEL200500 | __APP_PLL_SCLK_P0_1(3U) |
600 __APP_PLL_SCLK_JITLMT0_1(3U) |
601 __APP_PLL_SCLK_CNTLMT0_1(1U);
602 pll_fclk = __APP_PLL_LCLK_LRESETN | __APP_PLL_LCLK_ENARST |
603 __APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
604 __APP_PLL_LCLK_JITLMT0_1(3U) |
605 __APP_PLL_LCLK_CNTLMT0_1(1U);
606
607 if (fcmode) {
608 writel(0, (rb + OP_MODE));
609 writel(__APP_EMS_CMLCKSEL |
610 __APP_EMS_REFCKBUFEN2 |
611 __APP_EMS_CHANNEL_SEL,
612 (rb + ETH_MAC_SER_REG));
613 } else {
614 writel(__GLOBAL_FCOE_MODE, (rb + OP_MODE));
615 writel(__APP_EMS_REFCKBUFEN1,
616 (rb + ETH_MAC_SER_REG));
617 }
618 writel(BFI_IOC_UNINIT, (rb + BFA_IOC0_STATE_REG));
619 writel(BFI_IOC_UNINIT, (rb + BFA_IOC1_STATE_REG));
620 writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
621 writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
622 writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
623 writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
624 writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
625 writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
626 writel(pll_sclk |
627 __APP_PLL_SCLK_LOGIC_SOFT_RESET,
628 rb + APP_PLL_SCLK_CTL_REG);
629 writel(pll_fclk |
630 __APP_PLL_LCLK_LOGIC_SOFT_RESET,
631 rb + APP_PLL_LCLK_CTL_REG);
632 writel(pll_sclk |
633 __APP_PLL_SCLK_LOGIC_SOFT_RESET | __APP_PLL_SCLK_ENABLE,
634 rb + APP_PLL_SCLK_CTL_REG);
635 writel(pll_fclk |
636 __APP_PLL_LCLK_LOGIC_SOFT_RESET | __APP_PLL_LCLK_ENABLE,
637 rb + APP_PLL_LCLK_CTL_REG);
638 readl(rb + HOSTFN0_INT_MSK);
639 udelay(2000);
640 writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
641 writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
642 writel(pll_sclk |
643 __APP_PLL_SCLK_ENABLE,
644 rb + APP_PLL_SCLK_CTL_REG);
645 writel(pll_fclk |
646 __APP_PLL_LCLK_ENABLE,
647 rb + APP_PLL_LCLK_CTL_REG);
648
649 if (!fcmode) {
650 writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P0));
651 writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P1));
652 }
653 r32 = readl((rb + PSS_CTL_REG));
654 r32 &= ~__PSS_LMEM_RESET;
655 writel(r32, (rb + PSS_CTL_REG));
656 udelay(1000);
657 if (!fcmode) {
658 writel(0, (rb + PMM_1T_RESET_REG_P0));
659 writel(0, (rb + PMM_1T_RESET_REG_P1));
660 }
661
662 writel(__EDRAM_BISTR_START, (rb + MBIST_CTL_REG));
663 udelay(1000);
664 r32 = readl((rb + MBIST_STAT_REG));
665 writel(0, (rb + MBIST_CTL_REG));
666 return BFA_STATUS_OK;
667 }
668
669 static void
670 bfa_ioc_ct2_sclk_init(void __iomem *rb)
671 {
672 u32 r32;
673
674 /*
675 * put s_clk PLL and PLL FSM in reset
676 */
677 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
678 r32 &= ~(__APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN);
679 r32 |= (__APP_PLL_SCLK_ENARST | __APP_PLL_SCLK_BYPASS |
680 __APP_PLL_SCLK_LOGIC_SOFT_RESET);
681 writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
682
683 /*
684 * Ignore mode and program for the max clock (which is FC16)
685 * Firmware/NFC will do the PLL init appropiately
686 */
687 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
688 r32 &= ~(__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2);
689 writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
690
691 /*
692 * while doing PLL init dont clock gate ethernet subsystem
693 */
694 r32 = readl((rb + CT2_CHIP_MISC_PRG));
695 writel((r32 | __ETH_CLK_ENABLE_PORT0),
696 (rb + CT2_CHIP_MISC_PRG));
697
698 r32 = readl((rb + CT2_PCIE_MISC_REG));
699 writel((r32 | __ETH_CLK_ENABLE_PORT1),
700 (rb + CT2_PCIE_MISC_REG));
701
702 /*
703 * set sclk value
704 */
705 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
706 r32 &= (__P_SCLK_PLL_LOCK | __APP_PLL_SCLK_REFCLK_SEL |
707 __APP_PLL_SCLK_CLK_DIV2);
708 writel(r32 | 0x1061731b, (rb + CT2_APP_PLL_SCLK_CTL_REG));
709
710 /*
711 * poll for s_clk lock or delay 1ms
712 */
713 udelay(1000);
714
715 /*
716 * Dont do clock gating for ethernet subsystem, firmware/NFC will
717 * do this appropriately
718 */
719 }
720
721 static void
722 bfa_ioc_ct2_lclk_init(void __iomem *rb)
723 {
724 u32 r32;
725
726 /*
727 * put l_clk PLL and PLL FSM in reset
728 */
729 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
730 r32 &= ~(__APP_PLL_LCLK_ENABLE | __APP_PLL_LCLK_LRESETN);
731 r32 |= (__APP_PLL_LCLK_ENARST | __APP_PLL_LCLK_BYPASS |
732 __APP_PLL_LCLK_LOGIC_SOFT_RESET);
733 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
734
735 /*
736 * set LPU speed (set for FC16 which will work for other modes)
737 */
738 r32 = readl((rb + CT2_CHIP_MISC_PRG));
739 writel(r32, (rb + CT2_CHIP_MISC_PRG));
740
741 /*
742 * set LPU half speed (set for FC16 which will work for other modes)
743 */
744 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
745 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
746
747 /*
748 * set lclk for mode (set for FC16)
749 */
750 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
751 r32 &= (__P_LCLK_PLL_LOCK | __APP_LPUCLK_HALFSPEED);
752 r32 |= 0x20c1731b;
753 writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
754
755 /*
756 * poll for s_clk lock or delay 1ms
757 */
758 udelay(1000);
759 }
760
761 static void
762 bfa_ioc_ct2_mem_init(void __iomem *rb)
763 {
764 u32 r32;
765
766 r32 = readl((rb + PSS_CTL_REG));
767 r32 &= ~__PSS_LMEM_RESET;
768 writel(r32, (rb + PSS_CTL_REG));
769 udelay(1000);
770
771 writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
772 udelay(1000);
773 writel(0, (rb + CT2_MBIST_CTL_REG));
774 }
775
776 static void
777 bfa_ioc_ct2_mac_reset(void __iomem *rb)
778 {
779 volatile u32 r32;
780
781 bfa_ioc_ct2_sclk_init(rb);
782 bfa_ioc_ct2_lclk_init(rb);
783
784 /*
785 * release soft reset on s_clk & l_clk
786 */
787 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
788 writel((r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET),
789 (rb + CT2_APP_PLL_SCLK_CTL_REG));
790
791 /*
792 * release soft reset on s_clk & l_clk
793 */
794 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
795 writel((r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET),
796 (rb + CT2_APP_PLL_LCLK_CTL_REG));
797
798 /* put port0, port1 MAC & AHB in reset */
799 writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
800 (rb + CT2_CSI_MAC_CONTROL_REG(0)));
801 writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
802 (rb + CT2_CSI_MAC_CONTROL_REG(1)));
803 }
804
805 #define CT2_NFC_MAX_DELAY 1000
806 static enum bfa_status
807 bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode asic_mode)
808 {
809 volatile u32 wgn, r32;
810 int i;
811
812 /*
813 * Initialize PLL if not already done by NFC
814 */
815 wgn = readl(rb + CT2_WGN_STATUS);
816 if (!(wgn & __GLBL_PF_VF_CFG_RDY)) {
817 writel(__HALT_NFC_CONTROLLER, (rb + CT2_NFC_CSR_SET_REG));
818 for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
819 r32 = readl(rb + CT2_NFC_CSR_SET_REG);
820 if (r32 & __NFC_CONTROLLER_HALTED)
821 break;
822 udelay(1000);
823 }
824 }
825
826 /*
827 * Mask the interrupts and clear any
828 * pending interrupts left by BIOS/EFI
829 */
830
831 writel(1, (rb + CT2_LPU0_HOSTFN_MBOX0_MSK));
832 writel(1, (rb + CT2_LPU1_HOSTFN_MBOX0_MSK));
833
834 r32 = readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
835 if (r32 == 1) {
836 writel(1, (rb + CT2_LPU0_HOSTFN_CMD_STAT));
837 readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
838 }
839 r32 = readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
840 if (r32 == 1) {
841 writel(1, (rb + CT2_LPU1_HOSTFN_CMD_STAT));
842 readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
843 }
844
845 bfa_ioc_ct2_mac_reset(rb);
846 bfa_ioc_ct2_sclk_init(rb);
847 bfa_ioc_ct2_lclk_init(rb);
848
849 /*
850 * release soft reset on s_clk & l_clk
851 */
852 r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
853 writel((r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET),
854 (rb + CT2_APP_PLL_SCLK_CTL_REG));
855
856 /*
857 * release soft reset on s_clk & l_clk
858 */
859 r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
860 writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
861 (rb + CT2_APP_PLL_LCLK_CTL_REG));
862
863 /*
864 * Announce flash device presence, if flash was corrupted.
865 */
866 if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
867 r32 = readl((rb + PSS_GPIO_OUT_REG));
868 writel((r32 & ~1), (rb + PSS_GPIO_OUT_REG));
869 r32 = readl((rb + PSS_GPIO_OE_REG));
870 writel((r32 | 1), (rb + PSS_GPIO_OE_REG));
871 }
872
873 bfa_ioc_ct2_mem_init(rb);
874
875 writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC0_STATE_REG));
876 writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC1_STATE_REG));
877 return BFA_STATUS_OK;
878 }