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1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/delay.h>
18 #include <linux/kernel.h>
19 #include <linux/string.h>
20 #include <bcmdefs.h>
21 #include <linux/module.h>
22 #include <linux/pci.h>
23 #include <bcmutils.h>
24 #include <siutils.h>
25 #include <bcmdevs.h>
26 #include <hndsoc.h>
27 #include <sbchipc.h>
28 #include <pci_core.h>
29 #include <pcie_core.h>
30 #include <nicpci.h>
31 #include <bcmnvram.h>
32 #include <bcmsrom.h>
33 #include <pcicfg.h>
34 #include <sbsocram.h>
35 #ifdef BCMSDIO
36 #include <bcmsdh.h>
37 #include <sdio.h>
38 #include <sbsdio.h>
39 #include <sbhnddma.h>
40 #include <sbsdpcmdev.h>
41 #include <bcmsdpcm.h>
42 #endif /* BCMSDIO */
43 #include <wlc_pmu.h>
44
45 /* this file now contains only definitions for sb functions, only necessary
46 *for devices using Sonics backplanes (bcm4329)
47 */
48
49 /* if an amba SDIO device is supported, please further restrict the inclusion
50 * of this file
51 */
52 #ifdef BCMSDIO
53 #include "siutils_priv.h"
54 #endif
55
56 /* local prototypes */
57 static si_info_t *si_doattach(si_info_t *sii, uint devid, void *regs,
58 uint bustype, void *sdh, char **vars,
59 uint *varsz);
60 static bool si_buscore_prep(si_info_t *sii, uint bustype, uint devid,
61 void *sdh);
62 static bool si_buscore_setup(si_info_t *sii, chipcregs_t *cc, uint bustype,
63 u32 savewin, uint *origidx, void *regs);
64 static void si_nvram_process(si_info_t *sii, char *pvars);
65
66 /* dev path concatenation util */
67 static char *si_devpathvar(si_t *sih, char *var, int len, const char *name);
68 static bool _si_clkctl_cc(si_info_t *sii, uint mode);
69 static bool si_ispcie(si_info_t *sii);
70 static uint socram_banksize(si_info_t *sii, sbsocramregs_t *r,
71 u8 idx, u8 mtype);
72
73 /* global variable to indicate reservation/release of gpio's */
74 static u32 si_gpioreservation;
75
76 /*
77 * Allocate a si handle.
78 * devid - pci device id (used to determine chip#)
79 * osh - opaque OS handle
80 * regs - virtual address of initial core registers
81 * bustype - pci/sb/sdio/etc
82 * vars - pointer to a pointer area for "environment" variables
83 * varsz - pointer to int to return the size of the vars
84 */
85 si_t *si_attach(uint devid, void *regs, uint bustype,
86 void *sdh, char **vars, uint *varsz)
87 {
88 si_info_t *sii;
89
90 /* alloc si_info_t */
91 sii = kmalloc(sizeof(si_info_t), GFP_ATOMIC);
92 if (sii == NULL) {
93 SI_ERROR(("si_attach: malloc failed!\n"));
94 return NULL;
95 }
96
97 if (si_doattach(sii, devid, regs, bustype, sdh, vars, varsz) ==
98 NULL) {
99 kfree(sii);
100 return NULL;
101 }
102 sii->vars = vars ? *vars : NULL;
103 sii->varsz = varsz ? *varsz : 0;
104
105 return (si_t *) sii;
106 }
107
108 /* global kernel resource */
109 static si_info_t ksii;
110
111 static bool si_buscore_prep(si_info_t *sii, uint bustype, uint devid,
112 void *sdh)
113 {
114
115 #ifndef BRCM_FULLMAC
116 /* kludge to enable the clock on the 4306 which lacks a slowclock */
117 if (bustype == PCI_BUS && !si_ispcie(sii))
118 si_clkctl_xtal(&sii->pub, XTAL | PLL, ON);
119 #endif
120
121 #if defined(BCMSDIO)
122 if (bustype == SDIO_BUS) {
123 int err;
124 u8 clkset;
125
126 /* Try forcing SDIO core to do ALPAvail request only */
127 clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ;
128 bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR,
129 clkset, &err);
130 if (!err) {
131 u8 clkval;
132
133 /* If register supported, wait for ALPAvail and then force ALP */
134 clkval =
135 bcmsdh_cfg_read(sdh, SDIO_FUNC_1,
136 SBSDIO_FUNC1_CHIPCLKCSR, NULL);
137 if ((clkval & ~SBSDIO_AVBITS) == clkset) {
138 SPINWAIT(((clkval =
139 bcmsdh_cfg_read(sdh, SDIO_FUNC_1,
140 SBSDIO_FUNC1_CHIPCLKCSR,
141 NULL)),
142 !SBSDIO_ALPAV(clkval)),
143 PMU_MAX_TRANSITION_DLY);
144 if (!SBSDIO_ALPAV(clkval)) {
145 SI_ERROR(("timeout on ALPAV wait, clkval 0x%02x\n", clkval));
146 return false;
147 }
148 clkset =
149 SBSDIO_FORCE_HW_CLKREQ_OFF |
150 SBSDIO_FORCE_ALP;
151 bcmsdh_cfg_write(sdh, SDIO_FUNC_1,
152 SBSDIO_FUNC1_CHIPCLKCSR,
153 clkset, &err);
154 udelay(65);
155 }
156 }
157
158 /* Also, disable the extra SDIO pull-ups */
159 bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SDIOPULLUP, 0,
160 NULL);
161 }
162 #endif /* defined(BCMSDIO) */
163
164 return true;
165 }
166
167 static bool si_buscore_setup(si_info_t *sii, chipcregs_t *cc, uint bustype,
168 u32 savewin, uint *origidx, void *regs)
169 {
170 bool pci, pcie;
171 uint i;
172 uint pciidx, pcieidx, pcirev, pcierev;
173
174 cc = si_setcoreidx(&sii->pub, SI_CC_IDX);
175
176 /* get chipcommon rev */
177 sii->pub.ccrev = (int)si_corerev(&sii->pub);
178
179 /* get chipcommon chipstatus */
180 if (sii->pub.ccrev >= 11)
181 sii->pub.chipst = R_REG(&cc->chipstatus);
182
183 /* get chipcommon capabilites */
184 sii->pub.cccaps = R_REG(&cc->capabilities);
185 /* get chipcommon extended capabilities */
186
187 #ifndef BRCM_FULLMAC
188 if (sii->pub.ccrev >= 35)
189 sii->pub.cccaps_ext = R_REG(&cc->capabilities_ext);
190 #endif
191 /* get pmu rev and caps */
192 if (sii->pub.cccaps & CC_CAP_PMU) {
193 sii->pub.pmucaps = R_REG(&cc->pmucapabilities);
194 sii->pub.pmurev = sii->pub.pmucaps & PCAP_REV_MASK;
195 }
196
197 /*
198 SI_MSG(("Chipc: rev %d, caps 0x%x, chipst 0x%x pmurev %d, pmucaps 0x%x\n",
199 sii->pub.ccrev, sii->pub.cccaps, sii->pub.chipst, sii->pub.pmurev,
200 sii->pub.pmucaps));
201 */
202
203 /* figure out bus/orignal core idx */
204 sii->pub.buscoretype = NODEV_CORE_ID;
205 sii->pub.buscorerev = NOREV;
206 sii->pub.buscoreidx = BADIDX;
207
208 pci = pcie = false;
209 pcirev = pcierev = NOREV;
210 pciidx = pcieidx = BADIDX;
211
212 for (i = 0; i < sii->numcores; i++) {
213 uint cid, crev;
214
215 si_setcoreidx(&sii->pub, i);
216 cid = si_coreid(&sii->pub);
217 crev = si_corerev(&sii->pub);
218
219 /* Display cores found */
220 SI_VMSG(("CORE[%d]: id 0x%x rev %d base 0x%x regs 0x%p\n",
221 i, cid, crev, sii->coresba[i], sii->regs[i]));
222
223 if (bustype == PCI_BUS) {
224 if (cid == PCI_CORE_ID) {
225 pciidx = i;
226 pcirev = crev;
227 pci = true;
228 } else if (cid == PCIE_CORE_ID) {
229 pcieidx = i;
230 pcierev = crev;
231 pcie = true;
232 }
233 }
234 #ifdef BCMSDIO
235 else if (((bustype == SDIO_BUS) ||
236 (bustype == SPI_BUS)) &&
237 ((cid == PCMCIA_CORE_ID) || (cid == SDIOD_CORE_ID))) {
238 sii->pub.buscorerev = crev;
239 sii->pub.buscoretype = cid;
240 sii->pub.buscoreidx = i;
241 }
242 #endif /* BCMSDIO */
243
244 /* find the core idx before entering this func. */
245 if ((savewin && (savewin == sii->coresba[i])) ||
246 (regs == sii->regs[i]))
247 *origidx = i;
248 }
249
250 #ifdef BRCM_FULLMAC
251 SI_MSG(("Buscore id/type/rev %d/0x%x/%d\n", sii->pub.buscoreidx,
252 sii->pub.buscoretype, sii->pub.buscorerev));
253
254 /* Make sure any on-chip ARM is off (in case strapping is wrong),
255 * or downloaded code was
256 * already running.
257 */
258 if ((bustype == SDIO_BUS) || (bustype == SPI_BUS)) {
259 if (si_setcore(&sii->pub, ARM7S_CORE_ID, 0) ||
260 si_setcore(&sii->pub, ARMCM3_CORE_ID, 0))
261 si_core_disable(&sii->pub, 0);
262 }
263 #else
264 if (pci && pcie) {
265 if (si_ispcie(sii))
266 pci = false;
267 else
268 pcie = false;
269 }
270 if (pci) {
271 sii->pub.buscoretype = PCI_CORE_ID;
272 sii->pub.buscorerev = pcirev;
273 sii->pub.buscoreidx = pciidx;
274 } else if (pcie) {
275 sii->pub.buscoretype = PCIE_CORE_ID;
276 sii->pub.buscorerev = pcierev;
277 sii->pub.buscoreidx = pcieidx;
278 }
279
280 SI_VMSG(("Buscore id/type/rev %d/0x%x/%d\n", sii->pub.buscoreidx,
281 sii->pub.buscoretype, sii->pub.buscorerev));
282
283 /* fixup necessary chip/core configurations */
284 if (sii->pub.bustype == PCI_BUS) {
285 if (SI_FAST(sii)) {
286 if (!sii->pch) {
287 sii->pch = (void *)pcicore_init(
288 &sii->pub, sii->pbus,
289 (void *)PCIEREGS(sii));
290 if (sii->pch == NULL)
291 return false;
292 }
293 }
294 if (si_pci_fixcfg(&sii->pub)) {
295 SI_ERROR(("si_doattach: sb_pci_fixcfg failed\n"));
296 return false;
297 }
298 }
299 #endif
300 /* return to the original core */
301 si_setcoreidx(&sii->pub, *origidx);
302
303 return true;
304 }
305
306 static __used void si_nvram_process(si_info_t *sii, char *pvars)
307 {
308 uint w = 0;
309
310 /* get boardtype and boardrev */
311 switch (sii->pub.bustype) {
312 case PCI_BUS:
313 /* do a pci config read to get subsystem id and subvendor id */
314 pci_read_config_dword(sii->pbus, PCI_SUBSYSTEM_VENDOR_ID,
315 &w);
316 /* Let nvram variables override subsystem Vend/ID */
317 sii->pub.boardvendor = (u16)si_getdevpathintvar(&sii->pub,
318 "boardvendor");
319 if (sii->pub.boardvendor == 0)
320 sii->pub.boardvendor = w & 0xffff;
321 else
322 SI_ERROR(("Overriding boardvendor: 0x%x instead of 0x%x\n", sii->pub.boardvendor, w & 0xffff));
323 sii->pub.boardtype = (u16)si_getdevpathintvar(&sii->pub,
324 "boardtype");
325 if (sii->pub.boardtype == 0)
326 sii->pub.boardtype = (w >> 16) & 0xffff;
327 else
328 SI_ERROR(("Overriding boardtype: 0x%x instead of 0x%x\n", sii->pub.boardtype, (w >> 16) & 0xffff));
329 break;
330
331 #ifdef BCMSDIO
332 case SDIO_BUS:
333 #endif
334 sii->pub.boardvendor = getintvar(pvars, "manfid");
335 sii->pub.boardtype = getintvar(pvars, "prodid");
336 break;
337
338 #ifdef BCMSDIO
339 case SPI_BUS:
340 sii->pub.boardvendor = PCI_VENDOR_ID_BROADCOM;
341 sii->pub.boardtype = SPI_BOARD;
342 break;
343 #endif
344
345 case SI_BUS:
346 case JTAG_BUS:
347 sii->pub.boardvendor = PCI_VENDOR_ID_BROADCOM;
348 sii->pub.boardtype = getintvar(pvars, "prodid");
349 if (pvars == NULL || (sii->pub.boardtype == 0)) {
350 sii->pub.boardtype = getintvar(NULL, "boardtype");
351 if (sii->pub.boardtype == 0)
352 sii->pub.boardtype = 0xffff;
353 }
354 break;
355 }
356
357 if (sii->pub.boardtype == 0) {
358 SI_ERROR(("si_doattach: unknown board type\n"));
359 }
360
361 sii->pub.boardflags = getintvar(pvars, "boardflags");
362 }
363
364 /* this is will make Sonics calls directly, since Sonics is no longer supported in the Si abstraction */
365 /* this has been customized for the bcm 4329 ONLY */
366 #ifdef BRCM_FULLMAC
367 static si_info_t *si_doattach(si_info_t *sii, uint devid,
368 void *regs, uint bustype, void *pbus,
369 char **vars, uint *varsz)
370 {
371 struct si_pub *sih = &sii->pub;
372 u32 w, savewin;
373 chipcregs_t *cc;
374 uint origidx;
375
376 memset((unsigned char *) sii, 0, sizeof(si_info_t));
377
378 savewin = 0;
379
380 sih->buscoreidx = BADIDX;
381
382 sii->curmap = regs;
383 sii->pbus = pbus;
384
385 /* find Chipcommon address */
386 cc = (chipcregs_t *) sii->curmap;
387 sih->bustype = bustype;
388
389 /* bus/core/clk setup for register access */
390 if (!si_buscore_prep(sii, bustype, devid, pbus)) {
391 SI_ERROR(("si_doattach: si_core_clk_prep failed %d\n",
392 bustype));
393 return NULL;
394 }
395
396 /* ChipID recognition.
397 * We assume we can read chipid at offset 0 from the regs arg.
398 * If we add other chiptypes (or if we need to support old sdio hosts w/o chipcommon),
399 * some way of recognizing them needs to be added here.
400 */
401 w = R_REG(&cc->chipid);
402 sih->socitype = (w & CID_TYPE_MASK) >> CID_TYPE_SHIFT;
403 /* Might as wll fill in chip id rev & pkg */
404 sih->chip = w & CID_ID_MASK;
405 sih->chiprev = (w & CID_REV_MASK) >> CID_REV_SHIFT;
406 sih->chippkg = (w & CID_PKG_MASK) >> CID_PKG_SHIFT;
407
408 if ((sih->chip == BCM4329_CHIP_ID) &&
409 (sih->chippkg != BCM4329_289PIN_PKG_ID))
410 sih->chippkg = BCM4329_182PIN_PKG_ID;
411
412 sih->issim = IS_SIM(sih->chippkg);
413
414 /* scan for cores */
415 /* SI_MSG(("Found chip type SB (0x%08x)\n", w)); */
416 sb_scan(&sii->pub, regs, devid);
417
418 /* no cores found, bail out */
419 if (sii->numcores == 0) {
420 SI_ERROR(("si_doattach: could not find any cores\n"));
421 return NULL;
422 }
423 /* bus/core/clk setup */
424 origidx = SI_CC_IDX;
425 if (!si_buscore_setup(sii, cc, bustype, savewin, &origidx, regs)) {
426 SI_ERROR(("si_doattach: si_buscore_setup failed\n"));
427 goto exit;
428 }
429
430 cc = (chipcregs_t *) si_setcore(sih, CC_CORE_ID, 0);
431 W_REG(&cc->gpiopullup, 0);
432 W_REG(&cc->gpiopulldown, 0);
433 sb_setcoreidx(sih, origidx);
434
435 return sii;
436
437 exit:
438 return NULL;
439 }
440 #else /* BRCM_FULLMAC */
441 static si_info_t *si_doattach(si_info_t *sii, uint devid,
442 void *regs, uint bustype, void *pbus,
443 char **vars, uint *varsz)
444 {
445 struct si_pub *sih = &sii->pub;
446 u32 w, savewin;
447 chipcregs_t *cc;
448 char *pvars = NULL;
449 uint origidx;
450
451 memset((unsigned char *) sii, 0, sizeof(si_info_t));
452
453 savewin = 0;
454
455 sih->buscoreidx = BADIDX;
456
457 sii->curmap = regs;
458 sii->pbus = pbus;
459
460 /* check to see if we are a si core mimic'ing a pci core */
461 if (bustype == PCI_BUS) {
462 pci_read_config_dword(sii->pbus, PCI_SPROM_CONTROL, &w);
463 if (w == 0xffffffff) {
464 SI_ERROR(("%s: incoming bus is PCI but it's a lie, "
465 " switching to SI devid:0x%x\n",
466 __func__, devid));
467 bustype = SI_BUS;
468 }
469 }
470
471 /* find Chipcommon address */
472 if (bustype == PCI_BUS) {
473 pci_read_config_dword(sii->pbus, PCI_BAR0_WIN, &savewin);
474 if (!GOODCOREADDR(savewin, SI_ENUM_BASE))
475 savewin = SI_ENUM_BASE;
476 pci_write_config_dword(sii->pbus, PCI_BAR0_WIN,
477 SI_ENUM_BASE);
478 cc = (chipcregs_t *) regs;
479 } else {
480 cc = (chipcregs_t *) REG_MAP(SI_ENUM_BASE, SI_CORE_SIZE);
481 }
482
483 sih->bustype = bustype;
484
485 /* bus/core/clk setup for register access */
486 if (!si_buscore_prep(sii, bustype, devid, pbus)) {
487 SI_ERROR(("si_doattach: si_core_clk_prep failed %d\n",
488 bustype));
489 return NULL;
490 }
491
492 /* ChipID recognition.
493 * We assume we can read chipid at offset 0 from the regs arg.
494 * If we add other chiptypes (or if we need to support old sdio hosts w/o chipcommon),
495 * some way of recognizing them needs to be added here.
496 */
497 w = R_REG(&cc->chipid);
498 sih->socitype = (w & CID_TYPE_MASK) >> CID_TYPE_SHIFT;
499 /* Might as wll fill in chip id rev & pkg */
500 sih->chip = w & CID_ID_MASK;
501 sih->chiprev = (w & CID_REV_MASK) >> CID_REV_SHIFT;
502 sih->chippkg = (w & CID_PKG_MASK) >> CID_PKG_SHIFT;
503
504 sih->issim = IS_SIM(sih->chippkg);
505
506 /* scan for cores */
507 if (sii->pub.socitype == SOCI_AI) {
508 SI_MSG(("Found chip type AI (0x%08x)\n", w));
509 /* pass chipc address instead of original core base */
510 ai_scan(&sii->pub, (void *)cc, devid);
511 } else {
512 SI_ERROR(("Found chip of unknown type (0x%08x)\n", w));
513 return NULL;
514 }
515 /* no cores found, bail out */
516 if (sii->numcores == 0) {
517 SI_ERROR(("si_doattach: could not find any cores\n"));
518 return NULL;
519 }
520 /* bus/core/clk setup */
521 origidx = SI_CC_IDX;
522 if (!si_buscore_setup(sii, cc, bustype, savewin, &origidx, regs)) {
523 SI_ERROR(("si_doattach: si_buscore_setup failed\n"));
524 goto exit;
525 }
526
527 /* assume current core is CC */
528 if ((sii->pub.ccrev == 0x25)
529 &&
530 ((sih->chip == BCM43236_CHIP_ID
531 || sih->chip == BCM43235_CHIP_ID
532 || sih->chip == BCM43238_CHIP_ID)
533 && (sii->pub.chiprev <= 2))) {
534
535 if ((cc->chipstatus & CST43236_BP_CLK) != 0) {
536 uint clkdiv;
537 clkdiv = R_REG(&cc->clkdiv);
538 /* otp_clk_div is even number, 120/14 < 9mhz */
539 clkdiv = (clkdiv & ~CLKD_OTP) | (14 << CLKD_OTP_SHIFT);
540 W_REG(&cc->clkdiv, clkdiv);
541 SI_ERROR(("%s: set clkdiv to %x\n", __func__, clkdiv));
542 }
543 udelay(10);
544 }
545
546 /* Init nvram from flash if it exists */
547 nvram_init((void *)&(sii->pub));
548
549 /* Init nvram from sprom/otp if they exist */
550 if (srom_var_init
551 (&sii->pub, bustype, regs, vars, varsz)) {
552 SI_ERROR(("si_doattach: srom_var_init failed: bad srom\n"));
553 goto exit;
554 }
555 pvars = vars ? *vars : NULL;
556 si_nvram_process(sii, pvars);
557
558 /* === NVRAM, clock is ready === */
559 cc = (chipcregs_t *) si_setcore(sih, CC_CORE_ID, 0);
560 W_REG(&cc->gpiopullup, 0);
561 W_REG(&cc->gpiopulldown, 0);
562 si_setcoreidx(sih, origidx);
563
564 /* PMU specific initializations */
565 if (PMUCTL_ENAB(sih)) {
566 u32 xtalfreq;
567 si_pmu_init(sih);
568 si_pmu_chip_init(sih);
569 xtalfreq = getintvar(pvars, "xtalfreq");
570 /* If xtalfreq var not available, try to measure it */
571 if (xtalfreq == 0)
572 xtalfreq = si_pmu_measure_alpclk(sih);
573 si_pmu_pll_init(sih, xtalfreq);
574 si_pmu_res_init(sih);
575 si_pmu_swreg_init(sih);
576 }
577
578 /* setup the GPIO based LED powersave register */
579 w = getintvar(pvars, "leddc");
580 if (w == 0)
581 w = DEFAULT_GPIOTIMERVAL;
582 si_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, gpiotimerval), ~0, w);
583
584 if (PCIE(sii)) {
585 pcicore_attach(sii->pch, pvars, SI_DOATTACH);
586 }
587
588 if ((sih->chip == BCM43224_CHIP_ID) ||
589 (sih->chip == BCM43421_CHIP_ID)) {
590 /* enable 12 mA drive strenth for 43224 and set chipControl register bit 15 */
591 if (sih->chiprev == 0) {
592 SI_MSG(("Applying 43224A0 WARs\n"));
593 si_corereg(sih, SI_CC_IDX,
594 offsetof(chipcregs_t, chipcontrol),
595 CCTRL43224_GPIO_TOGGLE,
596 CCTRL43224_GPIO_TOGGLE);
597 si_pmu_chipcontrol(sih, 0, CCTRL_43224A0_12MA_LED_DRIVE,
598 CCTRL_43224A0_12MA_LED_DRIVE);
599 }
600 if (sih->chiprev >= 1) {
601 SI_MSG(("Applying 43224B0+ WARs\n"));
602 si_pmu_chipcontrol(sih, 0, CCTRL_43224B0_12MA_LED_DRIVE,
603 CCTRL_43224B0_12MA_LED_DRIVE);
604 }
605 }
606
607 if (sih->chip == BCM4313_CHIP_ID) {
608 /* enable 12 mA drive strenth for 4313 and set chipControl register bit 1 */
609 SI_MSG(("Applying 4313 WARs\n"));
610 si_pmu_chipcontrol(sih, 0, CCTRL_4313_12MA_LED_DRIVE,
611 CCTRL_4313_12MA_LED_DRIVE);
612 }
613
614 if (sih->chip == BCM4331_CHIP_ID) {
615 /* Enable Ext PA lines depending on chip package option */
616 si_chipcontrl_epa4331(sih, true);
617 }
618
619 return sii;
620 exit:
621 if (sih->bustype == PCI_BUS) {
622 if (sii->pch)
623 pcicore_deinit(sii->pch);
624 sii->pch = NULL;
625 }
626
627 return NULL;
628 }
629 #endif /* BRCM_FULLMAC */
630
631 /* may be called with core in reset */
632 void si_detach(si_t *sih)
633 {
634 si_info_t *sii;
635 uint idx;
636
637 struct si_pub *si_local = NULL;
638 memcpy(&si_local, &sih, sizeof(si_t **));
639
640 sii = SI_INFO(sih);
641
642 if (sii == NULL)
643 return;
644
645 if (sih->bustype == SI_BUS)
646 for (idx = 0; idx < SI_MAXCORES; idx++)
647 if (sii->regs[idx]) {
648 iounmap(sii->regs[idx]);
649 sii->regs[idx] = NULL;
650 }
651
652 #ifndef BRCM_FULLMAC
653 nvram_exit((void *)si_local); /* free up nvram buffers */
654
655 if (sih->bustype == PCI_BUS) {
656 if (sii->pch)
657 pcicore_deinit(sii->pch);
658 sii->pch = NULL;
659 }
660 #endif
661 #if !defined(BCMBUSTYPE) || (BCMBUSTYPE == SI_BUS)
662 if (sii != &ksii)
663 #endif /* !BCMBUSTYPE || (BCMBUSTYPE == SI_BUS) */
664 kfree(sii);
665 }
666
667 /* register driver interrupt disabling and restoring callback functions */
668 void
669 si_register_intr_callback(si_t *sih, void *intrsoff_fn, void *intrsrestore_fn,
670 void *intrsenabled_fn, void *intr_arg)
671 {
672 si_info_t *sii;
673
674 sii = SI_INFO(sih);
675 sii->intr_arg = intr_arg;
676 sii->intrsoff_fn = (si_intrsoff_t) intrsoff_fn;
677 sii->intrsrestore_fn = (si_intrsrestore_t) intrsrestore_fn;
678 sii->intrsenabled_fn = (si_intrsenabled_t) intrsenabled_fn;
679 /* save current core id. when this function called, the current core
680 * must be the core which provides driver functions(il, et, wl, etc.)
681 */
682 sii->dev_coreid = sii->coreid[sii->curidx];
683 }
684
685 void si_deregister_intr_callback(si_t *sih)
686 {
687 si_info_t *sii;
688
689 sii = SI_INFO(sih);
690 sii->intrsoff_fn = NULL;
691 }
692
693 uint si_flag(si_t *sih)
694 {
695 if (sih->socitype == SOCI_AI)
696 return ai_flag(sih);
697 else {
698 return 0;
699 }
700 }
701
702 void si_setint(si_t *sih, int siflag)
703 {
704 if (sih->socitype == SOCI_AI)
705 ai_setint(sih, siflag);
706 }
707
708 #ifndef BCMSDIO
709 uint si_coreid(si_t *sih)
710 {
711 si_info_t *sii;
712
713 sii = SI_INFO(sih);
714 return sii->coreid[sii->curidx];
715 }
716 #endif
717
718 uint si_coreidx(si_t *sih)
719 {
720 si_info_t *sii;
721
722 sii = SI_INFO(sih);
723 return sii->curidx;
724 }
725
726 bool si_backplane64(si_t *sih)
727 {
728 return (sih->cccaps & CC_CAP_BKPLN64) != 0;
729 }
730
731 #ifndef BCMSDIO
732 uint si_corerev(si_t *sih)
733 {
734 if (sih->socitype == SOCI_AI)
735 return ai_corerev(sih);
736 return 0;
737 }
738 #endif
739
740 /* return index of coreid or BADIDX if not found */
741 uint si_findcoreidx(si_t *sih, uint coreid, uint coreunit)
742 {
743 si_info_t *sii;
744 uint found;
745 uint i;
746
747 sii = SI_INFO(sih);
748
749 found = 0;
750
751 for (i = 0; i < sii->numcores; i++)
752 if (sii->coreid[i] == coreid) {
753 if (found == coreunit)
754 return i;
755 found++;
756 }
757
758 return BADIDX;
759 }
760
761 /*
762 * This function changes logical "focus" to the indicated core;
763 * must be called with interrupts off.
764 * Moreover, callers should keep interrupts off during switching out of and back to d11 core
765 */
766 void *si_setcore(si_t *sih, uint coreid, uint coreunit)
767 {
768 uint idx;
769
770 idx = si_findcoreidx(sih, coreid, coreunit);
771 if (!GOODIDX(idx))
772 return NULL;
773
774 if (sih->socitype == SOCI_AI)
775 return ai_setcoreidx(sih, idx);
776 else {
777 #ifdef BCMSDIO
778 return sb_setcoreidx(sih, idx);
779 #else
780 return NULL;
781 #endif
782 }
783 }
784
785 #ifndef BCMSDIO
786 void *si_setcoreidx(si_t *sih, uint coreidx)
787 {
788 if (sih->socitype == SOCI_AI)
789 return ai_setcoreidx(sih, coreidx);
790 else {
791 return NULL;
792 }
793 }
794 #endif
795
796 /* Turn off interrupt as required by sb_setcore, before switch core */
797 void *si_switch_core(si_t *sih, uint coreid, uint *origidx, uint *intr_val)
798 {
799 void *cc;
800 si_info_t *sii;
801
802 sii = SI_INFO(sih);
803
804 if (SI_FAST(sii)) {
805 /* Overloading the origidx variable to remember the coreid,
806 * this works because the core ids cannot be confused with
807 * core indices.
808 */
809 *origidx = coreid;
810 if (coreid == CC_CORE_ID)
811 return (void *)CCREGS_FAST(sii);
812 else if (coreid == sih->buscoretype)
813 return (void *)PCIEREGS(sii);
814 }
815 INTR_OFF(sii, *intr_val);
816 *origidx = sii->curidx;
817 cc = si_setcore(sih, coreid, 0);
818
819 return cc;
820 }
821
822 /* restore coreidx and restore interrupt */
823 void si_restore_core(si_t *sih, uint coreid, uint intr_val)
824 {
825 si_info_t *sii;
826
827 sii = SI_INFO(sih);
828 if (SI_FAST(sii)
829 && ((coreid == CC_CORE_ID) || (coreid == sih->buscoretype)))
830 return;
831
832 si_setcoreidx(sih, coreid);
833 INTR_RESTORE(sii, intr_val);
834 }
835
836 u32 si_core_cflags(si_t *sih, u32 mask, u32 val)
837 {
838 if (sih->socitype == SOCI_AI)
839 return ai_core_cflags(sih, mask, val);
840 else {
841 return 0;
842 }
843 }
844
845 u32 si_core_sflags(si_t *sih, u32 mask, u32 val)
846 {
847 if (sih->socitype == SOCI_AI)
848 return ai_core_sflags(sih, mask, val);
849 else {
850 return 0;
851 }
852 }
853
854 bool si_iscoreup(si_t *sih)
855 {
856 if (sih->socitype == SOCI_AI)
857 return ai_iscoreup(sih);
858 else {
859 #ifdef BCMSDIO
860 return sb_iscoreup(sih);
861 #else
862 return false;
863 #endif
864 }
865 }
866
867 void si_write_wrapperreg(si_t *sih, u32 offset, u32 val)
868 {
869 /* only for 4319, no requirement for SOCI_SB */
870 if (sih->socitype == SOCI_AI) {
871 ai_write_wrap_reg(sih, offset, val);
872 }
873 }
874
875 uint si_corereg(si_t *sih, uint coreidx, uint regoff, uint mask, uint val)
876 {
877
878 if (sih->socitype == SOCI_AI)
879 return ai_corereg(sih, coreidx, regoff, mask, val);
880 else {
881 #ifdef BCMSDIO
882 return sb_corereg(sih, coreidx, regoff, mask, val);
883 #else
884 return 0;
885 #endif
886 }
887 }
888
889 void si_core_disable(si_t *sih, u32 bits)
890 {
891
892 if (sih->socitype == SOCI_AI)
893 ai_core_disable(sih, bits);
894 #ifdef BCMSDIO
895 else
896 sb_core_disable(sih, bits);
897 #endif
898 }
899
900 void si_core_reset(si_t *sih, u32 bits, u32 resetbits)
901 {
902 if (sih->socitype == SOCI_AI)
903 ai_core_reset(sih, bits, resetbits);
904 #ifdef BCMSDIO
905 else
906 sb_core_reset(sih, bits, resetbits);
907 #endif
908 }
909
910 u32 si_alp_clock(si_t *sih)
911 {
912 if (PMUCTL_ENAB(sih))
913 return si_pmu_alp_clock(sih);
914
915 return ALP_CLOCK;
916 }
917
918 u32 si_ilp_clock(si_t *sih)
919 {
920 if (PMUCTL_ENAB(sih))
921 return si_pmu_ilp_clock(sih);
922
923 return ILP_CLOCK;
924 }
925
926 /* set chip watchdog reset timer to fire in 'ticks' */
927 #ifdef BRCM_FULLMAC
928 void
929 si_watchdog(si_t *sih, uint ticks)
930 {
931 if (PMUCTL_ENAB(sih)) {
932
933 if ((sih->chip == BCM4319_CHIP_ID) && (sih->chiprev == 0) &&
934 (ticks != 0)) {
935 si_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t,
936 clk_ctl_st), ~0, 0x2);
937 si_setcore(sih, USB20D_CORE_ID, 0);
938 si_core_disable(sih, 1);
939 si_setcore(sih, CC_CORE_ID, 0);
940 }
941
942 if (ticks == 1)
943 ticks = 2;
944 si_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, pmuwatchdog),
945 ~0, ticks);
946 } else {
947 /* instant NMI */
948 si_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, watchdog),
949 ~0, ticks);
950 }
951 }
952 #else
953 void si_watchdog(si_t *sih, uint ticks)
954 {
955 uint nb, maxt;
956
957 if (PMUCTL_ENAB(sih)) {
958
959 if ((sih->chip == BCM4319_CHIP_ID) &&
960 (sih->chiprev == 0) && (ticks != 0)) {
961 si_corereg(sih, SI_CC_IDX,
962 offsetof(chipcregs_t, clk_ctl_st), ~0, 0x2);
963 si_setcore(sih, USB20D_CORE_ID, 0);
964 si_core_disable(sih, 1);
965 si_setcore(sih, CC_CORE_ID, 0);
966 }
967
968 nb = (sih->ccrev < 26) ? 16 : ((sih->ccrev >= 37) ? 32 : 24);
969 /* The mips compiler uses the sllv instruction,
970 * so we specially handle the 32-bit case.
971 */
972 if (nb == 32)
973 maxt = 0xffffffff;
974 else
975 maxt = ((1 << nb) - 1);
976
977 if (ticks == 1)
978 ticks = 2;
979 else if (ticks > maxt)
980 ticks = maxt;
981
982 si_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, pmuwatchdog),
983 ~0, ticks);
984 } else {
985 /* make sure we come up in fast clock mode; or if clearing, clear clock */
986 si_clkctl_cc(sih, ticks ? CLK_FAST : CLK_DYNAMIC);
987 maxt = (1 << 28) - 1;
988 if (ticks > maxt)
989 ticks = maxt;
990
991 si_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, watchdog), ~0,
992 ticks);
993 }
994 }
995 #endif
996
997 /* return the slow clock source - LPO, XTAL, or PCI */
998 static uint si_slowclk_src(si_info_t *sii)
999 {
1000 chipcregs_t *cc;
1001 u32 val;
1002
1003 if (sii->pub.ccrev < 6) {
1004 if (sii->pub.bustype == PCI_BUS) {
1005 pci_read_config_dword(sii->pbus, PCI_GPIO_OUT,
1006 &val);
1007 if (val & PCI_CFG_GPIO_SCS)
1008 return SCC_SS_PCI;
1009 }
1010 return SCC_SS_XTAL;
1011 } else if (sii->pub.ccrev < 10) {
1012 cc = (chipcregs_t *) si_setcoreidx(&sii->pub, sii->curidx);
1013 return R_REG(&cc->slow_clk_ctl) & SCC_SS_MASK;
1014 } else /* Insta-clock */
1015 return SCC_SS_XTAL;
1016 }
1017
1018 /* return the ILP (slowclock) min or max frequency */
1019 static uint si_slowclk_freq(si_info_t *sii, bool max_freq, chipcregs_t *cc)
1020 {
1021 u32 slowclk;
1022 uint div;
1023
1024 slowclk = si_slowclk_src(sii);
1025 if (sii->pub.ccrev < 6) {
1026 if (slowclk == SCC_SS_PCI)
1027 return max_freq ? (PCIMAXFREQ / 64)
1028 : (PCIMINFREQ / 64);
1029 else
1030 return max_freq ? (XTALMAXFREQ / 32)
1031 : (XTALMINFREQ / 32);
1032 } else if (sii->pub.ccrev < 10) {
1033 div = 4 *
1034 (((R_REG(&cc->slow_clk_ctl) & SCC_CD_MASK) >>
1035 SCC_CD_SHIFT) + 1);
1036 if (slowclk == SCC_SS_LPO)
1037 return max_freq ? LPOMAXFREQ : LPOMINFREQ;
1038 else if (slowclk == SCC_SS_XTAL)
1039 return max_freq ? (XTALMAXFREQ / div)
1040 : (XTALMINFREQ / div);
1041 else if (slowclk == SCC_SS_PCI)
1042 return max_freq ? (PCIMAXFREQ / div)
1043 : (PCIMINFREQ / div);
1044 } else {
1045 /* Chipc rev 10 is InstaClock */
1046 div = R_REG(&cc->system_clk_ctl) >> SYCC_CD_SHIFT;
1047 div = 4 * (div + 1);
1048 return max_freq ? XTALMAXFREQ : (XTALMINFREQ / div);
1049 }
1050 return 0;
1051 }
1052
1053 static void si_clkctl_setdelay(si_info_t *sii, void *chipcregs)
1054 {
1055 chipcregs_t *cc = (chipcregs_t *) chipcregs;
1056 uint slowmaxfreq, pll_delay, slowclk;
1057 uint pll_on_delay, fref_sel_delay;
1058
1059 pll_delay = PLL_DELAY;
1060
1061 /* If the slow clock is not sourced by the xtal then add the xtal_on_delay
1062 * since the xtal will also be powered down by dynamic clk control logic.
1063 */
1064
1065 slowclk = si_slowclk_src(sii);
1066 if (slowclk != SCC_SS_XTAL)
1067 pll_delay += XTAL_ON_DELAY;
1068
1069 /* Starting with 4318 it is ILP that is used for the delays */
1070 slowmaxfreq =
1071 si_slowclk_freq(sii, (sii->pub.ccrev >= 10) ? false : true, cc);
1072
1073 pll_on_delay = ((slowmaxfreq * pll_delay) + 999999) / 1000000;
1074 fref_sel_delay = ((slowmaxfreq * FREF_DELAY) + 999999) / 1000000;
1075
1076 W_REG(&cc->pll_on_delay, pll_on_delay);
1077 W_REG(&cc->fref_sel_delay, fref_sel_delay);
1078 }
1079
1080 /* initialize power control delay registers */
1081 void si_clkctl_init(si_t *sih)
1082 {
1083 si_info_t *sii;
1084 uint origidx = 0;
1085 chipcregs_t *cc;
1086 bool fast;
1087
1088 if (!CCCTL_ENAB(sih))
1089 return;
1090
1091 sii = SI_INFO(sih);
1092 fast = SI_FAST(sii);
1093 if (!fast) {
1094 origidx = sii->curidx;
1095 cc = (chipcregs_t *) si_setcore(sih, CC_CORE_ID, 0);
1096 if (cc == NULL)
1097 return;
1098 } else {
1099 cc = (chipcregs_t *) CCREGS_FAST(sii);
1100 if (cc == NULL)
1101 return;
1102 }
1103
1104 /* set all Instaclk chip ILP to 1 MHz */
1105 if (sih->ccrev >= 10)
1106 SET_REG(&cc->system_clk_ctl, SYCC_CD_MASK,
1107 (ILP_DIV_1MHZ << SYCC_CD_SHIFT));
1108
1109 si_clkctl_setdelay(sii, (void *)cc);
1110
1111 if (!fast)
1112 si_setcoreidx(sih, origidx);
1113 }
1114
1115 /* return the value suitable for writing to the dot11 core FAST_PWRUP_DELAY register */
1116 u16 si_clkctl_fast_pwrup_delay(si_t *sih)
1117 {
1118 si_info_t *sii;
1119 uint origidx = 0;
1120 chipcregs_t *cc;
1121 uint slowminfreq;
1122 u16 fpdelay;
1123 uint intr_val = 0;
1124 bool fast;
1125
1126 sii = SI_INFO(sih);
1127 if (PMUCTL_ENAB(sih)) {
1128 INTR_OFF(sii, intr_val);
1129 fpdelay = si_pmu_fast_pwrup_delay(sih);
1130 INTR_RESTORE(sii, intr_val);
1131 return fpdelay;
1132 }
1133
1134 if (!CCCTL_ENAB(sih))
1135 return 0;
1136
1137 fast = SI_FAST(sii);
1138 fpdelay = 0;
1139 if (!fast) {
1140 origidx = sii->curidx;
1141 INTR_OFF(sii, intr_val);
1142 cc = (chipcregs_t *) si_setcore(sih, CC_CORE_ID, 0);
1143 if (cc == NULL)
1144 goto done;
1145 } else {
1146 cc = (chipcregs_t *) CCREGS_FAST(sii);
1147 if (cc == NULL)
1148 goto done;
1149 }
1150
1151 slowminfreq = si_slowclk_freq(sii, false, cc);
1152 fpdelay = (((R_REG(&cc->pll_on_delay) + 2) * 1000000) +
1153 (slowminfreq - 1)) / slowminfreq;
1154
1155 done:
1156 if (!fast) {
1157 si_setcoreidx(sih, origidx);
1158 INTR_RESTORE(sii, intr_val);
1159 }
1160 return fpdelay;
1161 }
1162
1163 /* turn primary xtal and/or pll off/on */
1164 int si_clkctl_xtal(si_t *sih, uint what, bool on)
1165 {
1166 si_info_t *sii;
1167 u32 in, out, outen;
1168
1169 sii = SI_INFO(sih);
1170
1171 switch (sih->bustype) {
1172
1173 #ifdef BCMSDIO
1174 case SDIO_BUS:
1175 return -1;
1176 #endif /* BCMSDIO */
1177
1178 case PCI_BUS:
1179 /* pcie core doesn't have any mapping to control the xtal pu */
1180 if (PCIE(sii))
1181 return -1;
1182
1183 pci_read_config_dword(sii->pbus, PCI_GPIO_IN, &in);
1184 pci_read_config_dword(sii->pbus, PCI_GPIO_OUT, &out);
1185 pci_read_config_dword(sii->pbus, PCI_GPIO_OUTEN, &outen);
1186
1187 /*
1188 * Avoid glitching the clock if GPRS is already using it.
1189 * We can't actually read the state of the PLLPD so we infer it
1190 * by the value of XTAL_PU which *is* readable via gpioin.
1191 */
1192 if (on && (in & PCI_CFG_GPIO_XTAL))
1193 return 0;
1194
1195 if (what & XTAL)
1196 outen |= PCI_CFG_GPIO_XTAL;
1197 if (what & PLL)
1198 outen |= PCI_CFG_GPIO_PLL;
1199
1200 if (on) {
1201 /* turn primary xtal on */
1202 if (what & XTAL) {
1203 out |= PCI_CFG_GPIO_XTAL;
1204 if (what & PLL)
1205 out |= PCI_CFG_GPIO_PLL;
1206 pci_write_config_dword(sii->pbus,
1207 PCI_GPIO_OUT, out);
1208 pci_write_config_dword(sii->pbus,
1209 PCI_GPIO_OUTEN, outen);
1210 udelay(XTAL_ON_DELAY);
1211 }
1212
1213 /* turn pll on */
1214 if (what & PLL) {
1215 out &= ~PCI_CFG_GPIO_PLL;
1216 pci_write_config_dword(sii->pbus,
1217 PCI_GPIO_OUT, out);
1218 mdelay(2);
1219 }
1220 } else {
1221 if (what & XTAL)
1222 out &= ~PCI_CFG_GPIO_XTAL;
1223 if (what & PLL)
1224 out |= PCI_CFG_GPIO_PLL;
1225 pci_write_config_dword(sii->pbus,
1226 PCI_GPIO_OUT, out);
1227 pci_write_config_dword(sii->pbus,
1228 PCI_GPIO_OUTEN, outen);
1229 }
1230
1231 default:
1232 return -1;
1233 }
1234
1235 return 0;
1236 }
1237
1238 /*
1239 * clock control policy function through chipcommon
1240 *
1241 * set dynamic clk control mode (forceslow, forcefast, dynamic)
1242 * returns true if we are forcing fast clock
1243 * this is a wrapper over the next internal function
1244 * to allow flexible policy settings for outside caller
1245 */
1246 bool si_clkctl_cc(si_t *sih, uint mode)
1247 {
1248 si_info_t *sii;
1249
1250 sii = SI_INFO(sih);
1251
1252 /* chipcommon cores prior to rev6 don't support dynamic clock control */
1253 if (sih->ccrev < 6)
1254 return false;
1255
1256 if (PCI_FORCEHT(sii))
1257 return mode == CLK_FAST;
1258
1259 return _si_clkctl_cc(sii, mode);
1260 }
1261
1262 /* clk control mechanism through chipcommon, no policy checking */
1263 static bool _si_clkctl_cc(si_info_t *sii, uint mode)
1264 {
1265 uint origidx = 0;
1266 chipcregs_t *cc;
1267 u32 scc;
1268 uint intr_val = 0;
1269 bool fast = SI_FAST(sii);
1270
1271 /* chipcommon cores prior to rev6 don't support dynamic clock control */
1272 if (sii->pub.ccrev < 6)
1273 return false;
1274
1275 if (!fast) {
1276 INTR_OFF(sii, intr_val);
1277 origidx = sii->curidx;
1278
1279 if ((sii->pub.bustype == SI_BUS) &&
1280 si_setcore(&sii->pub, MIPS33_CORE_ID, 0) &&
1281 (si_corerev(&sii->pub) <= 7) && (sii->pub.ccrev >= 10))
1282 goto done;
1283
1284 cc = (chipcregs_t *) si_setcore(&sii->pub, CC_CORE_ID, 0);
1285 } else {
1286 cc = (chipcregs_t *) CCREGS_FAST(sii);
1287 if (cc == NULL)
1288 goto done;
1289 }
1290
1291 if (!CCCTL_ENAB(&sii->pub) && (sii->pub.ccrev < 20))
1292 goto done;
1293
1294 switch (mode) {
1295 case CLK_FAST: /* FORCEHT, fast (pll) clock */
1296 if (sii->pub.ccrev < 10) {
1297 /* don't forget to force xtal back on before we clear SCC_DYN_XTAL.. */
1298 si_clkctl_xtal(&sii->pub, XTAL, ON);
1299 SET_REG(&cc->slow_clk_ctl,
1300 (SCC_XC | SCC_FS | SCC_IP), SCC_IP);
1301 } else if (sii->pub.ccrev < 20) {
1302 OR_REG(&cc->system_clk_ctl, SYCC_HR);
1303 } else {
1304 OR_REG(&cc->clk_ctl_st, CCS_FORCEHT);
1305 }
1306
1307 /* wait for the PLL */
1308 if (PMUCTL_ENAB(&sii->pub)) {
1309 u32 htavail = CCS_HTAVAIL;
1310 SPINWAIT(((R_REG(&cc->clk_ctl_st) & htavail)
1311 == 0), PMU_MAX_TRANSITION_DLY);
1312 } else {
1313 udelay(PLL_DELAY);
1314 }
1315 break;
1316
1317 case CLK_DYNAMIC: /* enable dynamic clock control */
1318 if (sii->pub.ccrev < 10) {
1319 scc = R_REG(&cc->slow_clk_ctl);
1320 scc &= ~(SCC_FS | SCC_IP | SCC_XC);
1321 if ((scc & SCC_SS_MASK) != SCC_SS_XTAL)
1322 scc |= SCC_XC;
1323 W_REG(&cc->slow_clk_ctl, scc);
1324
1325 /* for dynamic control, we have to release our xtal_pu "force on" */
1326 if (scc & SCC_XC)
1327 si_clkctl_xtal(&sii->pub, XTAL, OFF);
1328 } else if (sii->pub.ccrev < 20) {
1329 /* Instaclock */
1330 AND_REG(&cc->system_clk_ctl, ~SYCC_HR);
1331 } else {
1332 AND_REG(&cc->clk_ctl_st, ~CCS_FORCEHT);
1333 }
1334 break;
1335
1336 default:
1337 break;
1338 }
1339
1340 done:
1341 if (!fast) {
1342 si_setcoreidx(&sii->pub, origidx);
1343 INTR_RESTORE(sii, intr_val);
1344 }
1345 return mode == CLK_FAST;
1346 }
1347
1348 /* Build device path. Support SI, PCI, and JTAG for now. */
1349 int si_devpath(si_t *sih, char *path, int size)
1350 {
1351 int slen;
1352
1353 if (!path || size <= 0)
1354 return -1;
1355
1356 switch (sih->bustype) {
1357 case SI_BUS:
1358 case JTAG_BUS:
1359 slen = snprintf(path, (size_t) size, "sb/%u/", si_coreidx(sih));
1360 break;
1361 case PCI_BUS:
1362 slen = snprintf(path, (size_t) size, "pci/%u/%u/",
1363 ((struct pci_dev *)((SI_INFO(sih))->pbus))->bus->number,
1364 PCI_SLOT(
1365 ((struct pci_dev *)((SI_INFO(sih))->pbus))->devfn));
1366 break;
1367
1368 #ifdef BCMSDIO
1369 case SDIO_BUS:
1370 SI_ERROR(("si_devpath: device 0 assumed\n"));
1371 slen = snprintf(path, (size_t) size, "sd/%u/", si_coreidx(sih));
1372 break;
1373 #endif
1374 default:
1375 slen = -1;
1376 break;
1377 }
1378
1379 if (slen < 0 || slen >= size) {
1380 path[0] = '\0';
1381 return -1;
1382 }
1383
1384 return 0;
1385 }
1386
1387 /* Get a variable, but only if it has a devpath prefix */
1388 char *si_getdevpathvar(si_t *sih, const char *name)
1389 {
1390 char varname[SI_DEVPATH_BUFSZ + 32];
1391
1392 si_devpathvar(sih, varname, sizeof(varname), name);
1393
1394 return getvar(NULL, varname);
1395 }
1396
1397 /* Get a variable, but only if it has a devpath prefix */
1398 int si_getdevpathintvar(si_t *sih, const char *name)
1399 {
1400 #if defined(BCMBUSTYPE) && (BCMBUSTYPE == SI_BUS)
1401 return getintvar(NULL, name);
1402 #else
1403 char varname[SI_DEVPATH_BUFSZ + 32];
1404
1405 si_devpathvar(sih, varname, sizeof(varname), name);
1406
1407 return getintvar(NULL, varname);
1408 #endif
1409 }
1410
1411 char *si_getnvramflvar(si_t *sih, const char *name)
1412 {
1413 return getvar(NULL, name);
1414 }
1415
1416 /* Concatenate the dev path with a varname into the given 'var' buffer
1417 * and return the 'var' pointer.
1418 * Nothing is done to the arguments if len == 0 or var is NULL, var is still returned.
1419 * On overflow, the first char will be set to '\0'.
1420 */
1421 static char *si_devpathvar(si_t *sih, char *var, int len, const char *name)
1422 {
1423 uint path_len;
1424
1425 if (!var || len <= 0)
1426 return var;
1427
1428 if (si_devpath(sih, var, len) == 0) {
1429 path_len = strlen(var);
1430
1431 if (strlen(name) + 1 > (uint) (len - path_len))
1432 var[0] = '\0';
1433 else
1434 strncpy(var + path_len, name, len - path_len - 1);
1435 }
1436
1437 return var;
1438 }
1439
1440 /* return true if PCIE capability exists in the pci config space */
1441 static __used bool si_ispcie(si_info_t *sii)
1442 {
1443 u8 cap_ptr;
1444
1445 if (sii->pub.bustype != PCI_BUS)
1446 return false;
1447
1448 cap_ptr = pcicore_find_pci_capability(sii->pbus, PCI_CAP_ID_EXP, NULL,
1449 NULL);
1450 if (!cap_ptr)
1451 return false;
1452
1453 return true;
1454 }
1455
1456 #ifdef BCMSDIO
1457 /* initialize the sdio core */
1458 void si_sdio_init(si_t *sih)
1459 {
1460 si_info_t *sii = SI_INFO(sih);
1461
1462 if (((sih->buscoretype == PCMCIA_CORE_ID) && (sih->buscorerev >= 8)) ||
1463 (sih->buscoretype == SDIOD_CORE_ID)) {
1464 uint idx;
1465 sdpcmd_regs_t *sdpregs;
1466
1467 /* get the current core index */
1468 idx = sii->curidx;
1469
1470 /* switch to sdio core */
1471 sdpregs = (sdpcmd_regs_t *) si_setcore(sih, PCMCIA_CORE_ID, 0);
1472 if (!sdpregs)
1473 sdpregs =
1474 (sdpcmd_regs_t *) si_setcore(sih, SDIOD_CORE_ID, 0);
1475
1476 SI_MSG(("si_sdio_init: For PCMCIA/SDIO Corerev %d, enable ints from core %d " "through SD core %d (%p)\n", sih->buscorerev, idx, sii->curidx, sdpregs));
1477
1478 /* enable backplane error and core interrupts */
1479 W_REG(&sdpregs->hostintmask, I_SBINT);
1480 W_REG(&sdpregs->sbintmask,
1481 (I_SB_SERR | I_SB_RESPERR | (1 << idx)));
1482
1483 /* switch back to previous core */
1484 si_setcoreidx(sih, idx);
1485 }
1486
1487 /* enable interrupts */
1488 bcmsdh_intr_enable(sii->pbus);
1489
1490 }
1491 #endif /* BCMSDIO */
1492
1493 bool si_pci_war16165(si_t *sih)
1494 {
1495 si_info_t *sii;
1496
1497 sii = SI_INFO(sih);
1498
1499 return PCI(sii) && (sih->buscorerev <= 10);
1500 }
1501
1502 void si_pci_up(si_t *sih)
1503 {
1504 si_info_t *sii;
1505
1506 sii = SI_INFO(sih);
1507
1508 /* if not pci bus, we're done */
1509 if (sih->bustype != PCI_BUS)
1510 return;
1511
1512 if (PCI_FORCEHT(sii))
1513 _si_clkctl_cc(sii, CLK_FAST);
1514
1515 if (PCIE(sii))
1516 pcicore_up(sii->pch, SI_PCIUP);
1517
1518 }
1519
1520 /* Unconfigure and/or apply various WARs when system is going to sleep mode */
1521 void si_pci_sleep(si_t *sih)
1522 {
1523 si_info_t *sii;
1524
1525 sii = SI_INFO(sih);
1526
1527 pcicore_sleep(sii->pch);
1528 }
1529
1530 /* Unconfigure and/or apply various WARs when going down */
1531 void si_pci_down(si_t *sih)
1532 {
1533 si_info_t *sii;
1534
1535 sii = SI_INFO(sih);
1536
1537 /* if not pci bus, we're done */
1538 if (sih->bustype != PCI_BUS)
1539 return;
1540
1541 /* release FORCEHT since chip is going to "down" state */
1542 if (PCI_FORCEHT(sii))
1543 _si_clkctl_cc(sii, CLK_DYNAMIC);
1544
1545 pcicore_down(sii->pch, SI_PCIDOWN);
1546 }
1547
1548 /*
1549 * Configure the pci core for pci client (NIC) action
1550 * coremask is the bitvec of cores by index to be enabled.
1551 */
1552 void si_pci_setup(si_t *sih, uint coremask)
1553 {
1554 si_info_t *sii;
1555 struct sbpciregs *pciregs = NULL;
1556 u32 siflag = 0, w;
1557 uint idx = 0;
1558
1559 sii = SI_INFO(sih);
1560
1561 if (sii->pub.bustype != PCI_BUS)
1562 return;
1563
1564 if (PCI(sii)) {
1565 /* get current core index */
1566 idx = sii->curidx;
1567
1568 /* we interrupt on this backplane flag number */
1569 siflag = si_flag(sih);
1570
1571 /* switch over to pci core */
1572 pciregs = (struct sbpciregs *)si_setcoreidx(sih, sii->pub.buscoreidx);
1573 }
1574
1575 /*
1576 * Enable sb->pci interrupts. Assume
1577 * PCI rev 2.3 support was added in pci core rev 6 and things changed..
1578 */
1579 if (PCIE(sii) || (PCI(sii) && ((sii->pub.buscorerev) >= 6))) {
1580 /* pci config write to set this core bit in PCIIntMask */
1581 pci_read_config_dword(sii->pbus, PCI_INT_MASK, &w);
1582 w |= (coremask << PCI_SBIM_SHIFT);
1583 pci_write_config_dword(sii->pbus, PCI_INT_MASK, w);
1584 } else {
1585 /* set sbintvec bit for our flag number */
1586 si_setint(sih, siflag);
1587 }
1588
1589 if (PCI(sii)) {
1590 OR_REG(&pciregs->sbtopci2,
1591 (SBTOPCI_PREF | SBTOPCI_BURST));
1592 if (sii->pub.buscorerev >= 11) {
1593 OR_REG(&pciregs->sbtopci2,
1594 SBTOPCI_RC_READMULTI);
1595 w = R_REG(&pciregs->clkrun);
1596 W_REG(&pciregs->clkrun,
1597 (w | PCI_CLKRUN_DSBL));
1598 w = R_REG(&pciregs->clkrun);
1599 }
1600
1601 /* switch back to previous core */
1602 si_setcoreidx(sih, idx);
1603 }
1604 }
1605
1606 /*
1607 * Fixup SROMless PCI device's configuration.
1608 * The current core may be changed upon return.
1609 */
1610 int si_pci_fixcfg(si_t *sih)
1611 {
1612 uint origidx, pciidx;
1613 struct sbpciregs *pciregs = NULL;
1614 sbpcieregs_t *pcieregs = NULL;
1615 void *regs = NULL;
1616 u16 val16, *reg16 = NULL;
1617
1618 si_info_t *sii = SI_INFO(sih);
1619
1620 /* Fixup PI in SROM shadow area to enable the correct PCI core access */
1621 /* save the current index */
1622 origidx = si_coreidx(&sii->pub);
1623
1624 /* check 'pi' is correct and fix it if not */
1625 if (sii->pub.buscoretype == PCIE_CORE_ID) {
1626 pcieregs =
1627 (sbpcieregs_t *) si_setcore(&sii->pub, PCIE_CORE_ID, 0);
1628 regs = pcieregs;
1629 reg16 = &pcieregs->sprom[SRSH_PI_OFFSET];
1630 } else if (sii->pub.buscoretype == PCI_CORE_ID) {
1631 pciregs = (struct sbpciregs *)si_setcore(&sii->pub, PCI_CORE_ID, 0);
1632 regs = pciregs;
1633 reg16 = &pciregs->sprom[SRSH_PI_OFFSET];
1634 }
1635 pciidx = si_coreidx(&sii->pub);
1636 val16 = R_REG(reg16);
1637 if (((val16 & SRSH_PI_MASK) >> SRSH_PI_SHIFT) != (u16) pciidx) {
1638 val16 =
1639 (u16) (pciidx << SRSH_PI_SHIFT) | (val16 &
1640 ~SRSH_PI_MASK);
1641 W_REG(reg16, val16);
1642 }
1643
1644 /* restore the original index */
1645 si_setcoreidx(&sii->pub, origidx);
1646
1647 pcicore_hwup(sii->pch);
1648 return 0;
1649 }
1650
1651 /* mask&set gpiocontrol bits */
1652 u32 si_gpiocontrol(si_t *sih, u32 mask, u32 val, u8 priority)
1653 {
1654 uint regoff;
1655
1656 regoff = 0;
1657
1658 /* gpios could be shared on router platforms
1659 * ignore reservation if it's high priority (e.g., test apps)
1660 */
1661 if ((priority != GPIO_HI_PRIORITY) &&
1662 (sih->bustype == SI_BUS) && (val || mask)) {
1663 mask = priority ? (si_gpioreservation & mask) :
1664 ((si_gpioreservation | mask) & ~(si_gpioreservation));
1665 val &= mask;
1666 }
1667
1668 regoff = offsetof(chipcregs_t, gpiocontrol);
1669 return si_corereg(sih, SI_CC_IDX, regoff, mask, val);
1670 }
1671
1672 /* Return the size of the specified SOCRAM bank */
1673 static uint
1674 socram_banksize(si_info_t *sii, sbsocramregs_t *regs, u8 index,
1675 u8 mem_type)
1676 {
1677 uint banksize, bankinfo;
1678 uint bankidx = index | (mem_type << SOCRAM_BANKIDX_MEMTYPE_SHIFT);
1679
1680 W_REG(&regs->bankidx, bankidx);
1681 bankinfo = R_REG(&regs->bankinfo);
1682 banksize =
1683 SOCRAM_BANKINFO_SZBASE * ((bankinfo & SOCRAM_BANKINFO_SZMASK) + 1);
1684 return banksize;
1685 }
1686
1687 /* Return the RAM size of the SOCRAM core */
1688 u32 si_socram_size(si_t *sih)
1689 {
1690 si_info_t *sii;
1691 uint origidx;
1692 uint intr_val = 0;
1693
1694 sbsocramregs_t *regs;
1695 bool wasup;
1696 uint corerev;
1697 u32 coreinfo;
1698 uint memsize = 0;
1699
1700 sii = SI_INFO(sih);
1701
1702 /* Block ints and save current core */
1703 INTR_OFF(sii, intr_val);
1704 origidx = si_coreidx(sih);
1705
1706 /* Switch to SOCRAM core */
1707 regs = si_setcore(sih, SOCRAM_CORE_ID, 0);
1708 if (!regs)
1709 goto done;
1710
1711 /* Get info for determining size */
1712 wasup = si_iscoreup(sih);
1713 if (!wasup)
1714 si_core_reset(sih, 0, 0);
1715 corerev = si_corerev(sih);
1716 coreinfo = R_REG(&regs->coreinfo);
1717
1718 /* Calculate size from coreinfo based on rev */
1719 if (corerev == 0)
1720 memsize = 1 << (16 + (coreinfo & SRCI_MS0_MASK));
1721 else if (corerev < 3) {
1722 memsize = 1 << (SR_BSZ_BASE + (coreinfo & SRCI_SRBSZ_MASK));
1723 memsize *= (coreinfo & SRCI_SRNB_MASK) >> SRCI_SRNB_SHIFT;
1724 } else if ((corerev <= 7) || (corerev == 12)) {
1725 uint nb = (coreinfo & SRCI_SRNB_MASK) >> SRCI_SRNB_SHIFT;
1726 uint bsz = (coreinfo & SRCI_SRBSZ_MASK);
1727 uint lss = (coreinfo & SRCI_LSS_MASK) >> SRCI_LSS_SHIFT;
1728 if (lss != 0)
1729 nb--;
1730 memsize = nb * (1 << (bsz + SR_BSZ_BASE));
1731 if (lss != 0)
1732 memsize += (1 << ((lss - 1) + SR_BSZ_BASE));
1733 } else {
1734 u8 i;
1735 uint nb = (coreinfo & SRCI_SRNB_MASK) >> SRCI_SRNB_SHIFT;
1736 for (i = 0; i < nb; i++)
1737 memsize +=
1738 socram_banksize(sii, regs, i, SOCRAM_MEMTYPE_RAM);
1739 }
1740
1741 /* Return to previous state and core */
1742 if (!wasup)
1743 si_core_disable(sih, 0);
1744 si_setcoreidx(sih, origidx);
1745
1746 done:
1747 INTR_RESTORE(sii, intr_val);
1748
1749 return memsize;
1750 }
1751
1752 void si_chipcontrl_epa4331(si_t *sih, bool on)
1753 {
1754 si_info_t *sii;
1755 chipcregs_t *cc;
1756 uint origidx;
1757 u32 val;
1758
1759 sii = SI_INFO(sih);
1760 origidx = si_coreidx(sih);
1761
1762 cc = (chipcregs_t *) si_setcore(sih, CC_CORE_ID, 0);
1763
1764 val = R_REG(&cc->chipcontrol);
1765
1766 if (on) {
1767 if (sih->chippkg == 9 || sih->chippkg == 0xb) {
1768 /* Ext PA Controls for 4331 12x9 Package */
1769 W_REG(&cc->chipcontrol, val |
1770 (CCTRL4331_EXTPA_EN |
1771 CCTRL4331_EXTPA_ON_GPIO2_5));
1772 } else {
1773 /* Ext PA Controls for 4331 12x12 Package */
1774 W_REG(&cc->chipcontrol,
1775 val | (CCTRL4331_EXTPA_EN));
1776 }
1777 } else {
1778 val &= ~(CCTRL4331_EXTPA_EN | CCTRL4331_EXTPA_ON_GPIO2_5);
1779 W_REG(&cc->chipcontrol, val);
1780 }
1781
1782 si_setcoreidx(sih, origidx);
1783 }
1784
1785 /* Enable BT-COEX & Ex-PA for 4313 */
1786 void si_epa_4313war(si_t *sih)
1787 {
1788 si_info_t *sii;
1789 chipcregs_t *cc;
1790 uint origidx;
1791
1792 sii = SI_INFO(sih);
1793 origidx = si_coreidx(sih);
1794
1795 cc = (chipcregs_t *) si_setcore(sih, CC_CORE_ID, 0);
1796
1797 /* EPA Fix */
1798 W_REG(&cc->gpiocontrol,
1799 R_REG(&cc->gpiocontrol) | GPIO_CTRL_EPA_EN_MASK);
1800
1801 si_setcoreidx(sih, origidx);
1802 }
1803
1804 /* check if the device is removed */
1805 bool si_deviceremoved(si_t *sih)
1806 {
1807 u32 w;
1808 si_info_t *sii;
1809
1810 sii = SI_INFO(sih);
1811
1812 switch (sih->bustype) {
1813 case PCI_BUS:
1814 pci_read_config_dword(sii->pbus, PCI_VENDOR_ID, &w);
1815 if ((w & 0xFFFF) != PCI_VENDOR_ID_BROADCOM)
1816 return true;
1817 break;
1818 }
1819 return false;
1820 }
1821
1822 bool si_is_sprom_available(si_t *sih)
1823 {
1824 if (sih->ccrev >= 31) {
1825 si_info_t *sii;
1826 uint origidx;
1827 chipcregs_t *cc;
1828 u32 sromctrl;
1829
1830 if ((sih->cccaps & CC_CAP_SROM) == 0)
1831 return false;
1832
1833 sii = SI_INFO(sih);
1834 origidx = sii->curidx;
1835 cc = si_setcoreidx(sih, SI_CC_IDX);
1836 sromctrl = R_REG(&cc->sromcontrol);
1837 si_setcoreidx(sih, origidx);
1838 return sromctrl & SRC_PRESENT;
1839 }
1840
1841 switch (sih->chip) {
1842 case BCM4329_CHIP_ID:
1843 return (sih->chipst & CST4329_SPROM_SEL) != 0;
1844 case BCM4319_CHIP_ID:
1845 return (sih->chipst & CST4319_SPROM_SEL) != 0;
1846 case BCM4336_CHIP_ID:
1847 return (sih->chipst & CST4336_SPROM_PRESENT) != 0;
1848 case BCM4330_CHIP_ID:
1849 return (sih->chipst & CST4330_SPROM_PRESENT) != 0;
1850 case BCM4313_CHIP_ID:
1851 return (sih->chipst & CST4313_SPROM_PRESENT) != 0;
1852 case BCM4331_CHIP_ID:
1853 return (sih->chipst & CST4331_SPROM_PRESENT) != 0;
1854 default:
1855 return true;
1856 }
1857 }
1858
1859 bool si_is_otp_disabled(si_t *sih)
1860 {
1861 switch (sih->chip) {
1862 case BCM4329_CHIP_ID:
1863 return (sih->chipst & CST4329_SPROM_OTP_SEL_MASK) ==
1864 CST4329_OTP_PWRDN;
1865 case BCM4319_CHIP_ID:
1866 return (sih->chipst & CST4319_SPROM_OTP_SEL_MASK) ==
1867 CST4319_OTP_PWRDN;
1868 case BCM4336_CHIP_ID:
1869 return (sih->chipst & CST4336_OTP_PRESENT) == 0;
1870 case BCM4330_CHIP_ID:
1871 return (sih->chipst & CST4330_OTP_PRESENT) == 0;
1872 case BCM4313_CHIP_ID:
1873 return (sih->chipst & CST4313_OTP_PRESENT) == 0;
1874 /* These chips always have their OTP on */
1875 case BCM43224_CHIP_ID:
1876 case BCM43225_CHIP_ID:
1877 case BCM43421_CHIP_ID:
1878 case BCM43235_CHIP_ID:
1879 case BCM43236_CHIP_ID:
1880 case BCM43238_CHIP_ID:
1881 case BCM4331_CHIP_ID:
1882 default:
1883 return false;
1884 }
1885 }
1886
1887 bool si_is_otp_powered(si_t *sih)
1888 {
1889 if (PMUCTL_ENAB(sih))
1890 return si_pmu_is_otp_powered(sih);
1891 return true;
1892 }
1893
1894 void si_otp_power(si_t *sih, bool on)
1895 {
1896 if (PMUCTL_ENAB(sih))
1897 si_pmu_otp_power(sih, on);
1898 udelay(1000);
1899 }
1900