2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
18 #include <linux/string.h>
28 #include <pcie_core.h>
34 sbpcieregs_t *pcieregs;
36 } regs; /* Memory mapped register to the core */
38 si_t *sih; /* System interconnect handle */
39 osl_t *osh; /* OSL handle */
40 uint8 pciecap_lcreg_offset; /* PCIE capability LCreg offset in the config space */
43 uint8 pcie_war_aspm_ovr; /* Override ASPM/Clkreq settings */
45 uint8 pmecap_offset; /* PM Capability offset in the config space */
46 bool pmecap; /* Capable of generating PME */
50 #define PCI_ERROR(args)
51 #define PCIE_PUB(sih) ((BUSTYPE((sih)->bustype) == PCI_BUS) && ((sih)->buscoretype == PCIE_CORE_ID))
53 /* routines to access mdio slave device registers */
54 static bool pcie_mdiosetblock(pcicore_info_t *pi, uint blk);
55 static int pcie_mdioop(pcicore_info_t *pi, uint physmedia, uint regaddr,
56 bool write, uint *val);
57 static int pcie_mdiowrite(pcicore_info_t *pi, uint physmedia, uint readdr,
59 static int pcie_mdioread(pcicore_info_t *pi, uint physmedia, uint readdr,
62 static void pcie_extendL1timer(pcicore_info_t *pi, bool extend);
63 static void pcie_clkreq_upd(pcicore_info_t *pi, uint state);
65 static void pcie_war_aspm_clkreq(pcicore_info_t *pi);
66 static void pcie_war_serdes(pcicore_info_t *pi);
67 static void pcie_war_noplldown(pcicore_info_t *pi);
68 static void pcie_war_polarity(pcicore_info_t *pi);
69 static void pcie_war_pci_setup(pcicore_info_t *pi);
71 static bool pcicore_pmecap(pcicore_info_t *pi);
73 #define PCIE_ASPM(sih) ((PCIE_PUB(sih)) && (((sih)->buscorerev >= 3) && ((sih)->buscorerev <= 5)))
75 #define DWORD_ALIGN(x) (x & ~(0x03))
76 #define BYTE_POS(x) (x & 0x3)
77 #define WORD_POS(x) (x & 0x1)
79 #define BYTE_SHIFT(x) (8 * BYTE_POS(x))
80 #define WORD_SHIFT(x) (16 * WORD_POS(x))
82 #define BYTE_VAL(a, x) ((a >> BYTE_SHIFT(x)) & 0xFF)
83 #define WORD_VAL(a, x) ((a >> WORD_SHIFT(x)) & 0xFFFF)
85 #define read_pci_cfg_byte(a) \
86 (BYTE_VAL(OSL_PCI_READ_CONFIG(osh, DWORD_ALIGN(a), 4), a) & 0xff)
88 #define read_pci_cfg_word(a) \
89 (WORD_VAL(OSL_PCI_READ_CONFIG(osh, DWORD_ALIGN(a), 4), a) & 0xffff)
91 #define write_pci_cfg_byte(a, val) do { \
93 tmpval = (OSL_PCI_READ_CONFIG(osh, DWORD_ALIGN(a), 4) & ~0xFF << BYTE_POS(a)) | \
95 OSL_PCI_WRITE_CONFIG(osh, DWORD_ALIGN(a), 4, tmpval); \
98 #define write_pci_cfg_word(a, val) do { \
100 tmpval = (OSL_PCI_READ_CONFIG(osh, DWORD_ALIGN(a), 4) & ~0xFFFF << WORD_POS(a)) | \
101 val << WORD_POS(a); \
102 OSL_PCI_WRITE_CONFIG(osh, DWORD_ALIGN(a), 4, tmpval); \
105 /* delay needed between the mdio control/ mdiodata register data access */
106 #define PR28829_DELAY() OSL_DELAY(10)
108 /* Initialize the PCI core. It's caller's responsibility to make sure that this is done
111 void *pcicore_init(si_t *sih, osl_t *osh, void *regs)
115 ASSERT(sih->bustype == PCI_BUS);
117 /* alloc pcicore_info_t */
118 pi = MALLOC(osh, sizeof(pcicore_info_t));
120 PCI_ERROR(("pci_attach: malloc failed! malloced %d bytes\n",
125 bzero(pi, sizeof(pcicore_info_t));
130 if (sih->buscoretype == PCIE_CORE_ID) {
132 pi->regs.pcieregs = (sbpcieregs_t *) regs;
134 pcicore_find_pci_capability(pi->osh, PCI_CAP_PCIECAP_ID,
137 pi->pciecap_lcreg_offset = cap_ptr + PCIE_CAP_LINKCTRL_OFFSET;
139 pi->regs.pciregs = (sbpciregs_t *) regs;
144 void pcicore_deinit(void *pch)
146 pcicore_info_t *pi = (pcicore_info_t *) pch;
150 MFREE(pi->osh, pi, sizeof(pcicore_info_t));
153 /* return cap_offset if requested capability exists in the PCI config space */
154 /* Note that it's caller's responsibility to make sure it's a pci bus */
156 pcicore_find_pci_capability(osl_t *osh, uint8 req_cap_id, uchar *buf,
164 /* check for Header type 0 */
165 byte_val = read_pci_cfg_byte(PCI_CFG_HDR);
166 if ((byte_val & 0x7f) != PCI_HEADER_NORMAL)
169 /* check if the capability pointer field exists */
170 byte_val = read_pci_cfg_byte(PCI_CFG_STAT);
171 if (!(byte_val & PCI_CAPPTR_PRESENT))
174 cap_ptr = read_pci_cfg_byte(PCI_CFG_CAPPTR);
175 /* check if the capability pointer is 0x00 */
179 /* loop thr'u the capability list and see if the pcie capabilty exists */
181 cap_id = read_pci_cfg_byte(cap_ptr);
183 while (cap_id != req_cap_id) {
184 cap_ptr = read_pci_cfg_byte((cap_ptr + 1));
187 cap_id = read_pci_cfg_byte(cap_ptr);
189 if (cap_id != req_cap_id) {
192 /* found the caller requested capability */
193 if ((buf != NULL) && (buflen != NULL)) {
200 /* copy the cpability data excluding cap ID and next ptr */
201 cap_data = cap_ptr + 2;
202 if ((bufsize + cap_data) > SZPCR)
203 bufsize = SZPCR - cap_data;
206 *buf = read_pci_cfg_byte(cap_data);
215 /* ***** Register Access API */
217 pcie_readreg(osl_t *osh, sbpcieregs_t *pcieregs, uint addrtype, uint offset)
219 uint retval = 0xFFFFFFFF;
221 ASSERT(pcieregs != NULL);
224 case PCIE_CONFIGREGS:
225 W_REG(osh, (&pcieregs->configaddr), offset);
226 (void)R_REG(osh, (&pcieregs->configaddr));
227 retval = R_REG(osh, &(pcieregs->configdata));
230 W_REG(osh, &(pcieregs->pcieindaddr), offset);
231 (void)R_REG(osh, (&pcieregs->pcieindaddr));
232 retval = R_REG(osh, &(pcieregs->pcieinddata));
243 pcie_writereg(osl_t *osh, sbpcieregs_t *pcieregs, uint addrtype, uint offset,
246 ASSERT(pcieregs != NULL);
249 case PCIE_CONFIGREGS:
250 W_REG(osh, (&pcieregs->configaddr), offset);
251 W_REG(osh, (&pcieregs->configdata), val);
254 W_REG(osh, (&pcieregs->pcieindaddr), offset);
255 W_REG(osh, (&pcieregs->pcieinddata), val);
264 static bool pcie_mdiosetblock(pcicore_info_t *pi, uint blk)
266 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
267 uint mdiodata, i = 0;
268 uint pcie_serdes_spinwait = 200;
271 MDIODATA_START | MDIODATA_WRITE | (MDIODATA_DEV_ADDR <<
272 MDIODATA_DEVADDR_SHF) |
273 (MDIODATA_BLK_ADDR << MDIODATA_REGADDR_SHF) | MDIODATA_TA | (blk <<
275 W_REG(pi->osh, &pcieregs->mdiodata, mdiodata);
278 /* retry till the transaction is complete */
279 while (i < pcie_serdes_spinwait) {
280 if (R_REG(pi->osh, &(pcieregs->mdiocontrol)) &
281 MDIOCTL_ACCESS_DONE) {
288 if (i >= pcie_serdes_spinwait) {
289 PCI_ERROR(("pcie_mdiosetblock: timed out\n"));
297 pcie_mdioop(pcicore_info_t *pi, uint physmedia, uint regaddr, bool write,
300 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
303 uint pcie_serdes_spinwait = 10;
305 /* enable mdio access to SERDES */
306 W_REG(pi->osh, (&pcieregs->mdiocontrol),
307 MDIOCTL_PREAM_EN | MDIOCTL_DIVISOR_VAL);
309 if (pi->sih->buscorerev >= 10) {
310 /* new serdes is slower in rw, using two layers of reg address mapping */
311 if (!pcie_mdiosetblock(pi, physmedia))
313 mdiodata = (MDIODATA_DEV_ADDR << MDIODATA_DEVADDR_SHF) |
314 (regaddr << MDIODATA_REGADDR_SHF);
315 pcie_serdes_spinwait *= 20;
317 mdiodata = (physmedia << MDIODATA_DEVADDR_SHF_OLD) |
318 (regaddr << MDIODATA_REGADDR_SHF_OLD);
322 mdiodata |= (MDIODATA_START | MDIODATA_READ | MDIODATA_TA);
325 (MDIODATA_START | MDIODATA_WRITE | MDIODATA_TA | *val);
327 W_REG(pi->osh, &pcieregs->mdiodata, mdiodata);
331 /* retry till the transaction is complete */
332 while (i < pcie_serdes_spinwait) {
333 if (R_REG(pi->osh, &(pcieregs->mdiocontrol)) &
334 MDIOCTL_ACCESS_DONE) {
338 (R_REG(pi->osh, &(pcieregs->mdiodata)) &
341 /* Disable mdio access to SERDES */
342 W_REG(pi->osh, (&pcieregs->mdiocontrol), 0);
349 PCI_ERROR(("pcie_mdioop: timed out op: %d\n", write));
350 /* Disable mdio access to SERDES */
351 W_REG(pi->osh, (&pcieregs->mdiocontrol), 0);
355 /* use the mdio interface to read from mdio slaves */
357 pcie_mdioread(pcicore_info_t *pi, uint physmedia, uint regaddr, uint *regval)
359 return pcie_mdioop(pi, physmedia, regaddr, FALSE, regval);
362 /* use the mdio interface to write to mdio slaves */
364 pcie_mdiowrite(pcicore_info_t *pi, uint physmedia, uint regaddr, uint val)
366 return pcie_mdioop(pi, physmedia, regaddr, TRUE, &val);
369 /* ***** Support functions ***** */
370 uint8 pcie_clkreq(void *pch, uint32 mask, uint32 val)
372 pcicore_info_t *pi = (pcicore_info_t *) pch;
376 offset = pi->pciecap_lcreg_offset;
380 reg_val = OSL_PCI_READ_CONFIG(pi->osh, offset, sizeof(uint32));
384 reg_val |= PCIE_CLKREQ_ENAB;
386 reg_val &= ~PCIE_CLKREQ_ENAB;
387 OSL_PCI_WRITE_CONFIG(pi->osh, offset, sizeof(uint32), reg_val);
388 reg_val = OSL_PCI_READ_CONFIG(pi->osh, offset, sizeof(uint32));
390 if (reg_val & PCIE_CLKREQ_ENAB)
396 static void pcie_extendL1timer(pcicore_info_t *pi, bool extend)
400 osl_t *osh = pi->osh;
401 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
403 if (!PCIE_PUB(sih) || sih->buscorerev < 7)
406 w = pcie_readreg(osh, pcieregs, PCIE_PCIEREGS, PCIE_DLLP_PMTHRESHREG);
408 w |= PCIE_ASPMTIMER_EXTEND;
410 w &= ~PCIE_ASPMTIMER_EXTEND;
411 pcie_writereg(osh, pcieregs, PCIE_PCIEREGS, PCIE_DLLP_PMTHRESHREG, w);
412 w = pcie_readreg(osh, pcieregs, PCIE_PCIEREGS, PCIE_DLLP_PMTHRESHREG);
415 /* centralized clkreq control policy */
416 static void pcie_clkreq_upd(pcicore_info_t *pi, uint state)
419 ASSERT(PCIE_PUB(sih));
424 pcie_clkreq((void *)pi, 1, 0);
427 if (sih->buscorerev == 6) { /* turn on serdes PLL down */
428 si_corereg(sih, SI_CC_IDX,
429 OFFSETOF(chipcregs_t, chipcontrol_addr), ~0,
431 si_corereg(sih, SI_CC_IDX,
432 OFFSETOF(chipcregs_t, chipcontrol_data),
434 } else if (pi->pcie_pr42767) {
435 pcie_clkreq((void *)pi, 1, 1);
439 if (sih->buscorerev == 6) { /* turn off serdes PLL down */
440 si_corereg(sih, SI_CC_IDX,
441 OFFSETOF(chipcregs_t, chipcontrol_addr), ~0,
443 si_corereg(sih, SI_CC_IDX,
444 OFFSETOF(chipcregs_t, chipcontrol_data),
446 } else if (PCIE_ASPM(sih)) { /* disable clkreq */
447 pcie_clkreq((void *)pi, 1, 0);
456 /* ***** PCI core WARs ***** */
457 /* Done only once at attach time */
458 static void pcie_war_polarity(pcicore_info_t *pi)
462 if (pi->pcie_polarity != 0)
465 w = pcie_readreg(pi->osh, pi->regs.pcieregs, PCIE_PCIEREGS,
468 /* Detect the current polarity at attach and force that polarity and
469 * disable changing the polarity
471 if ((w & PCIE_PLP_POLARITYINV_STAT) == 0)
472 pi->pcie_polarity = (SERDES_RX_CTRL_FORCE);
475 (SERDES_RX_CTRL_FORCE | SERDES_RX_CTRL_POLARITY);
478 /* enable ASPM and CLKREQ if srom doesn't have it */
479 /* Needs to happen when update to shadow SROM is needed
480 * : Coming out of 'standby'/'hibernate'
481 * : If pcie_war_aspm_ovr state changed
483 static void pcie_war_aspm_clkreq(pcicore_info_t *pi)
485 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
487 uint16 val16, *reg16;
493 /* bypass this on QT or VSIM */
494 if (!ISSIM_ENAB(sih)) {
496 reg16 = &pcieregs->sprom[SRSH_ASPM_OFFSET];
497 val16 = R_REG(pi->osh, reg16);
499 val16 &= ~SRSH_ASPM_ENB;
500 if (pi->pcie_war_aspm_ovr == PCIE_ASPM_ENAB)
501 val16 |= SRSH_ASPM_ENB;
502 else if (pi->pcie_war_aspm_ovr == PCIE_ASPM_L1_ENAB)
503 val16 |= SRSH_ASPM_L1_ENB;
504 else if (pi->pcie_war_aspm_ovr == PCIE_ASPM_L0s_ENAB)
505 val16 |= SRSH_ASPM_L0s_ENB;
507 W_REG(pi->osh, reg16, val16);
509 w = OSL_PCI_READ_CONFIG(pi->osh, pi->pciecap_lcreg_offset,
511 w &= ~PCIE_ASPM_ENAB;
512 w |= pi->pcie_war_aspm_ovr;
513 OSL_PCI_WRITE_CONFIG(pi->osh, pi->pciecap_lcreg_offset,
517 reg16 = &pcieregs->sprom[SRSH_CLKREQ_OFFSET_REV5];
518 val16 = R_REG(pi->osh, reg16);
520 if (pi->pcie_war_aspm_ovr != PCIE_ASPM_DISAB) {
521 val16 |= SRSH_CLKREQ_ENB;
522 pi->pcie_pr42767 = TRUE;
524 val16 &= ~SRSH_CLKREQ_ENB;
526 W_REG(pi->osh, reg16, val16);
529 /* Apply the polarity determined at the start */
530 /* Needs to happen when coming out of 'standby'/'hibernate' */
531 static void pcie_war_serdes(pcicore_info_t *pi)
535 if (pi->pcie_polarity != 0)
536 pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_CTRL,
539 pcie_mdioread(pi, MDIODATA_DEV_PLL, SERDES_PLL_CTRL, &w);
540 if (w & PLL_CTRL_FREQDET_EN) {
541 w &= ~PLL_CTRL_FREQDET_EN;
542 pcie_mdiowrite(pi, MDIODATA_DEV_PLL, SERDES_PLL_CTRL, w);
546 /* Fix MISC config to allow coming out of L2/L3-Ready state w/o PRST */
547 /* Needs to happen when coming out of 'standby'/'hibernate' */
548 static void BCMINITFN(pcie_misc_config_fixup) (pcicore_info_t *pi)
550 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
551 uint16 val16, *reg16;
553 reg16 = &pcieregs->sprom[SRSH_PCIE_MISC_CONFIG];
554 val16 = R_REG(pi->osh, reg16);
556 if ((val16 & SRSH_L23READY_EXIT_NOPERST) == 0) {
557 val16 |= SRSH_L23READY_EXIT_NOPERST;
558 W_REG(pi->osh, reg16, val16);
562 /* quick hack for testing */
563 /* Needs to happen when coming out of 'standby'/'hibernate' */
564 static void pcie_war_noplldown(pcicore_info_t *pi)
566 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
569 ASSERT(pi->sih->buscorerev == 7);
571 /* turn off serdes PLL down */
572 si_corereg(pi->sih, SI_CC_IDX, OFFSETOF(chipcregs_t, chipcontrol),
573 CHIPCTRL_4321_PLL_DOWN, CHIPCTRL_4321_PLL_DOWN);
575 /* clear srom shadow backdoor */
576 reg16 = &pcieregs->sprom[SRSH_BD_OFFSET];
577 W_REG(pi->osh, reg16, 0);
580 /* Needs to happen when coming out of 'standby'/'hibernate' */
581 static void pcie_war_pci_setup(pcicore_info_t *pi)
584 osl_t *osh = pi->osh;
585 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
588 if ((sih->buscorerev == 0) || (sih->buscorerev == 1)) {
589 w = pcie_readreg(osh, pcieregs, PCIE_PCIEREGS,
590 PCIE_TLP_WORKAROUNDSREG);
592 pcie_writereg(osh, pcieregs, PCIE_PCIEREGS,
593 PCIE_TLP_WORKAROUNDSREG, w);
596 if (sih->buscorerev == 1) {
597 w = pcie_readreg(osh, pcieregs, PCIE_PCIEREGS, PCIE_DLLP_LCREG);
599 pcie_writereg(osh, pcieregs, PCIE_PCIEREGS, PCIE_DLLP_LCREG, w);
602 if (sih->buscorerev == 0) {
603 pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_TIMER1, 0x8128);
604 pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_CDR, 0x0100);
605 pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_CDRBW, 0x1466);
606 } else if (PCIE_ASPM(sih)) {
607 /* Change the L1 threshold for better performance */
608 w = pcie_readreg(osh, pcieregs, PCIE_PCIEREGS,
609 PCIE_DLLP_PMTHRESHREG);
610 w &= ~(PCIE_L1THRESHOLDTIME_MASK);
611 w |= (PCIE_L1THRESHOLD_WARVAL << PCIE_L1THRESHOLDTIME_SHIFT);
612 pcie_writereg(osh, pcieregs, PCIE_PCIEREGS,
613 PCIE_DLLP_PMTHRESHREG, w);
617 pcie_war_aspm_clkreq(pi);
618 } else if (pi->sih->buscorerev == 7)
619 pcie_war_noplldown(pi);
621 /* Note that the fix is actually in the SROM, that's why this is open-ended */
622 if (pi->sih->buscorerev >= 6)
623 pcie_misc_config_fixup(pi);
626 void pcie_war_ovr_aspm_update(void *pch, uint8 aspm)
628 pcicore_info_t *pi = (pcicore_info_t *) pch;
630 if (!PCIE_ASPM(pi->sih))
634 if (aspm > PCIE_ASPM_ENAB)
637 pi->pcie_war_aspm_ovr = aspm;
639 /* Update the current state */
640 pcie_war_aspm_clkreq(pi);
643 /* ***** Functions called during driver state changes ***** */
644 void BCMATTACHFN(pcicore_attach) (void *pch, char *pvars, int state)
646 pcicore_info_t *pi = (pcicore_info_t *) pch;
649 /* Determine if this board needs override */
650 if (PCIE_ASPM(sih)) {
651 if ((uint32) getintvar(pvars, "boardflags2") & BFL2_PCIEWAR_OVR) {
652 pi->pcie_war_aspm_ovr = PCIE_ASPM_DISAB;
654 pi->pcie_war_aspm_ovr = PCIE_ASPM_ENAB;
658 /* These need to happen in this order only */
659 pcie_war_polarity(pi);
663 pcie_war_aspm_clkreq(pi);
665 pcie_clkreq_upd(pi, state);
669 void pcicore_hwup(void *pch)
671 pcicore_info_t *pi = (pcicore_info_t *) pch;
673 if (!pi || !PCIE_PUB(pi->sih))
676 pcie_war_pci_setup(pi);
679 void pcicore_up(void *pch, int state)
681 pcicore_info_t *pi = (pcicore_info_t *) pch;
683 if (!pi || !PCIE_PUB(pi->sih))
686 /* Restore L1 timer for better performance */
687 pcie_extendL1timer(pi, TRUE);
689 pcie_clkreq_upd(pi, state);
692 /* When the device is going to enter D3 state (or the system is going to enter S3/S4 states */
693 void pcicore_sleep(void *pch)
695 pcicore_info_t *pi = (pcicore_info_t *) pch;
698 if (!pi || !PCIE_ASPM(pi->sih))
701 w = OSL_PCI_READ_CONFIG(pi->osh, pi->pciecap_lcreg_offset,
703 w &= ~PCIE_CAP_LCREG_ASPML1;
704 OSL_PCI_WRITE_CONFIG(pi->osh, pi->pciecap_lcreg_offset, sizeof(uint32),
707 pi->pcie_pr42767 = FALSE;
710 void pcicore_down(void *pch, int state)
712 pcicore_info_t *pi = (pcicore_info_t *) pch;
714 if (!pi || !PCIE_PUB(pi->sih))
717 pcie_clkreq_upd(pi, state);
719 /* Reduce L1 timer for better power savings */
720 pcie_extendL1timer(pi, FALSE);
723 /* ***** Wake-on-wireless-LAN (WOWL) support functions ***** */
724 /* Just uses PCI config accesses to find out, when needed before sb_attach is done */
725 bool pcicore_pmecap_fast(osl_t *osh)
731 pcicore_find_pci_capability(osh, PCI_CAP_POWERMGMTCAP_ID, NULL,
737 pmecap = OSL_PCI_READ_CONFIG(osh, cap_ptr, sizeof(uint32));
739 return (pmecap & PME_CAP_PM_STATES) != 0;
742 /* return TRUE if PM capability exists in the pci config space
743 * Uses and caches the information using core handle
745 static bool pcicore_pmecap(pcicore_info_t *pi)
750 if (!pi->pmecap_offset) {
752 pcicore_find_pci_capability(pi->osh,
753 PCI_CAP_POWERMGMTCAP_ID, NULL,
758 pi->pmecap_offset = cap_ptr;
761 OSL_PCI_READ_CONFIG(pi->osh, pi->pmecap_offset,
764 /* At least one state can generate PME */
765 pi->pmecap = (pmecap & PME_CAP_PM_STATES) != 0;
771 /* Enable PME generation */
772 void pcicore_pmeen(void *pch)
774 pcicore_info_t *pi = (pcicore_info_t *) pch;
777 /* if not pmecapable return */
778 if (!pcicore_pmecap(pi))
781 w = OSL_PCI_READ_CONFIG(pi->osh, pi->pmecap_offset + PME_CSR_OFFSET,
783 w |= (PME_CSR_PME_EN);
784 OSL_PCI_WRITE_CONFIG(pi->osh, pi->pmecap_offset + PME_CSR_OFFSET,
789 * Return TRUE if PME status set
791 bool pcicore_pmestat(void *pch)
793 pcicore_info_t *pi = (pcicore_info_t *) pch;
796 if (!pcicore_pmecap(pi))
799 w = OSL_PCI_READ_CONFIG(pi->osh, pi->pmecap_offset + PME_CSR_OFFSET,
802 return (w & PME_CSR_PME_STAT) == PME_CSR_PME_STAT;
805 /* Disable PME generation, clear the PME status bit if set
807 void pcicore_pmeclr(void *pch)
809 pcicore_info_t *pi = (pcicore_info_t *) pch;
812 if (!pcicore_pmecap(pi))
815 w = OSL_PCI_READ_CONFIG(pi->osh, pi->pmecap_offset + PME_CSR_OFFSET,
818 PCI_ERROR(("pcicore_pci_pmeclr PMECSR : 0x%x\n", w));
820 /* PMESTAT is cleared by writing 1 to it */
821 w &= ~(PME_CSR_PME_EN);
823 OSL_PCI_WRITE_CONFIG(pi->osh, pi->pmecap_offset + PME_CSR_OFFSET,
827 uint32 pcie_lcreg(void *pch, uint32 mask, uint32 val)
829 pcicore_info_t *pi = (pcicore_info_t *) pch;
832 offset = pi->pciecap_lcreg_offset;
838 OSL_PCI_WRITE_CONFIG(pi->osh, offset, sizeof(uint32), val);
840 return OSL_PCI_READ_CONFIG(pi->osh, offset, sizeof(uint32));
844 pcicore_pciereg(void *pch, uint32 offset, uint32 mask, uint32 val, uint type)
847 pcicore_info_t *pi = (pcicore_info_t *) pch;
848 sbpcieregs_t *pcieregs = pi->regs.pcieregs;
849 osl_t *osh = pi->osh;
852 PCI_ERROR(("PCIEREG: 0x%x writeval 0x%x\n", offset, val));
853 pcie_writereg(osh, pcieregs, type, offset, val);
856 /* Should not read register 0x154 */
857 if (pi->sih->buscorerev <= 5 && offset == PCIE_DLLP_PCIE11
858 && type == PCIE_PCIEREGS)
861 reg_val = pcie_readreg(osh, pcieregs, type, offset);
862 PCI_ERROR(("PCIEREG: 0x%x readval is 0x%x\n", offset, reg_val));
868 pcicore_pcieserdesreg(void *pch, uint32 mdioslave, uint32 offset, uint32 mask,
872 pcicore_info_t *pi = (pcicore_info_t *) pch;
875 PCI_ERROR(("PCIEMDIOREG: 0x%x writeval 0x%x\n", offset, val));
876 pcie_mdiowrite(pi, mdioslave, offset, val);
879 if (pcie_mdioread(pi, mdioslave, offset, ®_val))
880 reg_val = 0xFFFFFFFF;
881 PCI_ERROR(("PCIEMDIOREG: dev 0x%x offset 0x%x read 0x%x\n", mdioslave,