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2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 | /*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <bcmdefs.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <bcmutils.h>
#include <aiutils.h>
#include <hndsoc.h>
#include <sbchipc.h>
#include <pcicfg.h>
#include <bcmdevs.h>
/* ********** from siutils.c *********** */
#include <pci_core.h>
#include <pcie_core.h>
#include <nicpci.h>
#include <bcmnvram.h>
#include <bcmsrom.h>
#include <wlc_pmu.h>
#define BCM47162_DMP() ((sih->chip == BCM47162_CHIP_ID) && \
(sih->chiprev == 0) && \
(sii->coreid[sii->curidx] == MIPS74K_CORE_ID))
/* EROM parsing */
static u32
get_erom_ent(si_t *sih, u32 **eromptr, u32 mask, u32 match)
{
u32 ent;
uint inv = 0, nom = 0;
while (true) {
ent = R_REG(*eromptr);
(*eromptr)++;
if (mask == 0)
break;
if ((ent & ER_VALID) == 0) {
inv++;
continue;
}
if (ent == (ER_END | ER_VALID))
break;
if ((ent & mask) == match)
break;
nom++;
}
SI_VMSG(("%s: Returning ent 0x%08x\n", __func__, ent));
if (inv + nom) {
SI_VMSG((" after %d invalid and %d non-matching entries\n",
inv, nom));
}
return ent;
}
static u32
get_asd(si_t *sih, u32 **eromptr, uint sp, uint ad, uint st,
u32 *addrl, u32 *addrh, u32 *sizel, u32 *sizeh)
{
u32 asd, sz, szd;
asd = get_erom_ent(sih, eromptr, ER_VALID, ER_VALID);
if (((asd & ER_TAG1) != ER_ADD) ||
(((asd & AD_SP_MASK) >> AD_SP_SHIFT) != sp) ||
((asd & AD_ST_MASK) != st)) {
/* This is not what we want, "push" it back */
(*eromptr)--;
return 0;
}
*addrl = asd & AD_ADDR_MASK;
if (asd & AD_AG32)
*addrh = get_erom_ent(sih, eromptr, 0, 0);
else
*addrh = 0;
*sizeh = 0;
sz = asd & AD_SZ_MASK;
if (sz == AD_SZ_SZD) {
szd = get_erom_ent(sih, eromptr, 0, 0);
*sizel = szd & SD_SZ_MASK;
if (szd & SD_SG32)
*sizeh = get_erom_ent(sih, eromptr, 0, 0);
} else
*sizel = AD_SZ_BASE << (sz >> AD_SZ_SHIFT);
SI_VMSG((" SP %d, ad %d: st = %d, 0x%08x_0x%08x @ 0x%08x_0x%08x\n",
sp, ad, st, *sizeh, *sizel, *addrh, *addrl));
return asd;
}
static void ai_hwfixup(si_info_t *sii)
{
}
/* parse the enumeration rom to identify all cores */
void ai_scan(si_t *sih, void *regs, uint devid)
{
si_info_t *sii = SI_INFO(sih);
chipcregs_t *cc = (chipcregs_t *) regs;
u32 erombase, *eromptr, *eromlim;
erombase = R_REG(&cc->eromptr);
switch (sih->bustype) {
case SI_BUS:
eromptr = (u32 *) REG_MAP(erombase, SI_CORE_SIZE);
break;
case PCI_BUS:
/* Set wrappers address */
sii->curwrap = (void *)((unsigned long)regs + SI_CORE_SIZE);
/* Now point the window at the erom */
pci_write_config_dword(sii->pbus, PCI_BAR0_WIN, erombase);
eromptr = regs;
break;
case SPI_BUS:
case SDIO_BUS:
eromptr = (u32 *)(unsigned long)erombase;
break;
default:
SI_ERROR(("Don't know how to do AXI enumertion on bus %d\n",
sih->bustype));
return;
}
eromlim = eromptr + (ER_REMAPCONTROL / sizeof(u32));
SI_VMSG(("ai_scan: regs = 0x%p, erombase = 0x%08x, eromptr = 0x%p, eromlim = 0x%p\n", regs, erombase, eromptr, eromlim));
while (eromptr < eromlim) {
u32 cia, cib, cid, mfg, crev, nmw, nsw, nmp, nsp;
u32 mpd, asd, addrl, addrh, sizel, sizeh;
u32 *base;
uint i, j, idx;
bool br;
br = false;
/* Grok a component */
cia = get_erom_ent(sih, &eromptr, ER_TAG, ER_CI);
if (cia == (ER_END | ER_VALID)) {
SI_VMSG(("Found END of erom after %d cores\n",
sii->numcores));
ai_hwfixup(sii);
return;
}
base = eromptr - 1;
cib = get_erom_ent(sih, &eromptr, 0, 0);
if ((cib & ER_TAG) != ER_CI) {
SI_ERROR(("CIA not followed by CIB\n"));
goto error;
}
cid = (cia & CIA_CID_MASK) >> CIA_CID_SHIFT;
mfg = (cia & CIA_MFG_MASK) >> CIA_MFG_SHIFT;
crev = (cib & CIB_REV_MASK) >> CIB_REV_SHIFT;
nmw = (cib & CIB_NMW_MASK) >> CIB_NMW_SHIFT;
nsw = (cib & CIB_NSW_MASK) >> CIB_NSW_SHIFT;
nmp = (cib & CIB_NMP_MASK) >> CIB_NMP_SHIFT;
nsp = (cib & CIB_NSP_MASK) >> CIB_NSP_SHIFT;
SI_VMSG(("Found component 0x%04x/0x%04x rev %d at erom addr 0x%p, with nmw = %d, " "nsw = %d, nmp = %d & nsp = %d\n", mfg, cid, crev, base, nmw, nsw, nmp, nsp));
if (((mfg == MFGID_ARM) && (cid == DEF_AI_COMP)) || (nsp == 0))
continue;
if ((nmw + nsw == 0)) {
/* A component which is not a core */
if (cid == OOB_ROUTER_CORE_ID) {
asd = get_asd(sih, &eromptr, 0, 0, AD_ST_SLAVE,
&addrl, &addrh, &sizel, &sizeh);
if (asd != 0) {
sii->oob_router = addrl;
}
}
continue;
}
idx = sii->numcores;
/* sii->eromptr[idx] = base; */
sii->cia[idx] = cia;
sii->cib[idx] = cib;
sii->coreid[idx] = cid;
for (i = 0; i < nmp; i++) {
mpd = get_erom_ent(sih, &eromptr, ER_VALID, ER_VALID);
if ((mpd & ER_TAG) != ER_MP) {
SI_ERROR(("Not enough MP entries for component 0x%x\n", cid));
goto error;
}
SI_VMSG((" Master port %d, mp: %d id: %d\n", i,
(mpd & MPD_MP_MASK) >> MPD_MP_SHIFT,
(mpd & MPD_MUI_MASK) >> MPD_MUI_SHIFT));
}
/* First Slave Address Descriptor should be port 0:
* the main register space for the core
*/
asd =
get_asd(sih, &eromptr, 0, 0, AD_ST_SLAVE, &addrl, &addrh,
&sizel, &sizeh);
if (asd == 0) {
/* Try again to see if it is a bridge */
asd =
get_asd(sih, &eromptr, 0, 0, AD_ST_BRIDGE, &addrl,
&addrh, &sizel, &sizeh);
if (asd != 0)
br = true;
else if ((addrh != 0) || (sizeh != 0)
|| (sizel != SI_CORE_SIZE)) {
SI_ERROR(("First Slave ASD for core 0x%04x malformed " "(0x%08x)\n", cid, asd));
goto error;
}
}
sii->coresba[idx] = addrl;
sii->coresba_size[idx] = sizel;
/* Get any more ASDs in port 0 */
j = 1;
do {
asd =
get_asd(sih, &eromptr, 0, j, AD_ST_SLAVE, &addrl,
&addrh, &sizel, &sizeh);
if ((asd != 0) && (j == 1) && (sizel == SI_CORE_SIZE)) {
sii->coresba2[idx] = addrl;
sii->coresba2_size[idx] = sizel;
}
j++;
} while (asd != 0);
/* Go through the ASDs for other slave ports */
for (i = 1; i < nsp; i++) {
j = 0;
do {
asd =
get_asd(sih, &eromptr, i, j++, AD_ST_SLAVE,
&addrl, &addrh, &sizel, &sizeh);
} while (asd != 0);
if (j == 0) {
SI_ERROR((" SP %d has no address descriptors\n",
i));
goto error;
}
}
/* Now get master wrappers */
for (i = 0; i < nmw; i++) {
asd =
get_asd(sih, &eromptr, i, 0, AD_ST_MWRAP, &addrl,
&addrh, &sizel, &sizeh);
if (asd == 0) {
SI_ERROR(("Missing descriptor for MW %d\n", i));
goto error;
}
if ((sizeh != 0) || (sizel != SI_CORE_SIZE)) {
SI_ERROR(("Master wrapper %d is not 4KB\n", i));
goto error;
}
if (i == 0)
sii->wrapba[idx] = addrl;
}
/* And finally slave wrappers */
for (i = 0; i < nsw; i++) {
uint fwp = (nsp == 1) ? 0 : 1;
asd =
get_asd(sih, &eromptr, fwp + i, 0, AD_ST_SWRAP,
&addrl, &addrh, &sizel, &sizeh);
if (asd == 0) {
SI_ERROR(("Missing descriptor for SW %d\n", i));
goto error;
}
if ((sizeh != 0) || (sizel != SI_CORE_SIZE)) {
SI_ERROR(("Slave wrapper %d is not 4KB\n", i));
goto error;
}
if ((nmw == 0) && (i == 0))
sii->wrapba[idx] = addrl;
}
/* Don't record bridges */
if (br)
continue;
/* Done with core */
sii->numcores++;
}
SI_ERROR(("Reached end of erom without finding END"));
error:
sii->numcores = 0;
return;
}
/* This function changes the logical "focus" to the indicated core.
* Return the current core's virtual address.
*/
void *ai_setcoreidx(si_t *sih, uint coreidx)
{
si_info_t *sii = SI_INFO(sih);
u32 addr = sii->coresba[coreidx];
u32 wrap = sii->wrapba[coreidx];
void *regs;
if (coreidx >= sii->numcores)
return NULL;
switch (sih->bustype) {
case SI_BUS:
/* map new one */
if (!sii->regs[coreidx]) {
sii->regs[coreidx] = REG_MAP(addr, SI_CORE_SIZE);
}
sii->curmap = regs = sii->regs[coreidx];
if (!sii->wrappers[coreidx]) {
sii->wrappers[coreidx] = REG_MAP(wrap, SI_CORE_SIZE);
}
sii->curwrap = sii->wrappers[coreidx];
break;
case PCI_BUS:
/* point bar0 window */
pci_write_config_dword(sii->pbus, PCI_BAR0_WIN, addr);
regs = sii->curmap;
/* point bar0 2nd 4KB window */
pci_write_config_dword(sii->pbus, PCI_BAR0_WIN2, wrap);
break;
case SPI_BUS:
case SDIO_BUS:
sii->curmap = regs = (void *)(unsigned long)addr;
sii->curwrap = (void *)(unsigned long)wrap;
break;
default:
regs = NULL;
break;
}
sii->curmap = regs;
sii->curidx = coreidx;
return regs;
}
/* Return the number of address spaces in current core */
int ai_numaddrspaces(si_t *sih)
{
return 2;
}
/* Return the address of the nth address space in the current core */
u32 ai_addrspace(si_t *sih, uint asidx)
{
si_info_t *sii;
uint cidx;
sii = SI_INFO(sih);
cidx = sii->curidx;
if (asidx == 0)
return sii->coresba[cidx];
else if (asidx == 1)
return sii->coresba2[cidx];
else {
SI_ERROR(("%s: Need to parse the erom again to find addr space %d\n", __func__, asidx));
return 0;
}
}
/* Return the size of the nth address space in the current core */
u32 ai_addrspacesize(si_t *sih, uint asidx)
{
si_info_t *sii;
uint cidx;
sii = SI_INFO(sih);
cidx = sii->curidx;
if (asidx == 0)
return sii->coresba_size[cidx];
else if (asidx == 1)
return sii->coresba2_size[cidx];
else {
SI_ERROR(("%s: Need to parse the erom again to find addr space %d\n", __func__, asidx));
return 0;
}
}
uint ai_flag(si_t *sih)
{
si_info_t *sii;
aidmp_t *ai;
sii = SI_INFO(sih);
if (BCM47162_DMP()) {
SI_ERROR(("%s: Attempting to read MIPS DMP registers on 47162a0", __func__));
return sii->curidx;
}
ai = sii->curwrap;
return R_REG(&ai->oobselouta30) & 0x1f;
}
void ai_setint(si_t *sih, int siflag)
{
}
uint ai_corevendor(si_t *sih)
{
si_info_t *sii;
u32 cia;
sii = SI_INFO(sih);
cia = sii->cia[sii->curidx];
return (cia & CIA_MFG_MASK) >> CIA_MFG_SHIFT;
}
uint ai_corerev(si_t *sih)
{
si_info_t *sii;
u32 cib;
sii = SI_INFO(sih);
cib = sii->cib[sii->curidx];
return (cib & CIB_REV_MASK) >> CIB_REV_SHIFT;
}
bool ai_iscoreup(si_t *sih)
{
si_info_t *sii;
aidmp_t *ai;
sii = SI_INFO(sih);
ai = sii->curwrap;
return (((R_REG(&ai->ioctrl) & (SICF_FGC | SICF_CLOCK_EN)) ==
SICF_CLOCK_EN)
&& ((R_REG(&ai->resetctrl) & AIRC_RESET) == 0));
}
void ai_core_cflags_wo(si_t *sih, u32 mask, u32 val)
{
si_info_t *sii;
aidmp_t *ai;
u32 w;
sii = SI_INFO(sih);
if (BCM47162_DMP()) {
SI_ERROR(("%s: Accessing MIPS DMP register (ioctrl) on 47162a0",
__func__));
return;
}
ai = sii->curwrap;
if (mask || val) {
w = ((R_REG(&ai->ioctrl) & ~mask) | val);
W_REG(&ai->ioctrl, w);
}
}
u32 ai_core_cflags(si_t *sih, u32 mask, u32 val)
{
si_info_t *sii;
aidmp_t *ai;
u32 w;
sii = SI_INFO(sih);
if (BCM47162_DMP()) {
SI_ERROR(("%s: Accessing MIPS DMP register (ioctrl) on 47162a0",
__func__));
return 0;
}
ai = sii->curwrap;
if (mask || val) {
w = ((R_REG(&ai->ioctrl) & ~mask) | val);
W_REG(&ai->ioctrl, w);
}
return R_REG(&ai->ioctrl);
}
u32 ai_core_sflags(si_t *sih, u32 mask, u32 val)
{
si_info_t *sii;
aidmp_t *ai;
u32 w;
sii = SI_INFO(sih);
if (BCM47162_DMP()) {
SI_ERROR(("%s: Accessing MIPS DMP register (iostatus) on 47162a0", __func__));
return 0;
}
ai = sii->curwrap;
if (mask || val) {
w = ((R_REG(&ai->iostatus) & ~mask) | val);
W_REG(&ai->iostatus, w);
}
return R_REG(&ai->iostatus);
}
/* *************** from siutils.c ************** */
/* local prototypes */
static si_info_t *ai_doattach(si_info_t *sii, uint devid, void *regs,
uint bustype, void *sdh, char **vars,
uint *varsz);
static bool ai_buscore_prep(si_info_t *sii, uint bustype, uint devid,
void *sdh);
static bool ai_buscore_setup(si_info_t *sii, chipcregs_t *cc, uint bustype,
u32 savewin, uint *origidx, void *regs);
static void ai_nvram_process(si_info_t *sii, char *pvars);
/* dev path concatenation util */
static char *ai_devpathvar(si_t *sih, char *var, int len, const char *name);
static bool _ai_clkctl_cc(si_info_t *sii, uint mode);
static bool ai_ispcie(si_info_t *sii);
/* global variable to indicate reservation/release of gpio's */
static u32 ai_gpioreservation;
/*
* Allocate a si handle.
* devid - pci device id (used to determine chip#)
* osh - opaque OS handle
* regs - virtual address of initial core registers
* bustype - pci/sb/sdio/etc
* vars - pointer to a pointer area for "environment" variables
* varsz - pointer to int to return the size of the vars
*/
si_t *ai_attach(uint devid, void *regs, uint bustype,
void *sdh, char **vars, uint *varsz)
{
si_info_t *sii;
/* alloc si_info_t */
sii = kmalloc(sizeof(si_info_t), GFP_ATOMIC);
if (sii == NULL) {
SI_ERROR(("si_attach: malloc failed!\n"));
return NULL;
}
if (ai_doattach(sii, devid, regs, bustype, sdh, vars, varsz) ==
NULL) {
kfree(sii);
return NULL;
}
sii->vars = vars ? *vars : NULL;
sii->varsz = varsz ? *varsz : 0;
return (si_t *) sii;
}
/* global kernel resource */
static si_info_t ksii;
static bool ai_buscore_prep(si_info_t *sii, uint bustype, uint devid,
void *sdh)
{
/* kludge to enable the clock on the 4306 which lacks a slowclock */
if (bustype == PCI_BUS && !ai_ispcie(sii))
ai_clkctl_xtal(&sii->pub, XTAL | PLL, ON);
return true;
}
static bool ai_buscore_setup(si_info_t *sii, chipcregs_t *cc, uint bustype,
u32 savewin, uint *origidx, void *regs)
{
bool pci, pcie;
uint i;
uint pciidx, pcieidx, pcirev, pcierev;
cc = ai_setcoreidx(&sii->pub, SI_CC_IDX);
/* get chipcommon rev */
sii->pub.ccrev = (int)ai_corerev(&sii->pub);
/* get chipcommon chipstatus */
if (sii->pub.ccrev >= 11)
sii->pub.chipst = R_REG(&cc->chipstatus);
/* get chipcommon capabilites */
sii->pub.cccaps = R_REG(&cc->capabilities);
/* get chipcommon extended capabilities */
if (sii->pub.ccrev >= 35)
sii->pub.cccaps_ext = R_REG(&cc->capabilities_ext);
/* get pmu rev and caps */
if (sii->pub.cccaps & CC_CAP_PMU) {
sii->pub.pmucaps = R_REG(&cc->pmucapabilities);
sii->pub.pmurev = sii->pub.pmucaps & PCAP_REV_MASK;
}
/* figure out bus/orignal core idx */
sii->pub.buscoretype = NODEV_CORE_ID;
sii->pub.buscorerev = NOREV;
sii->pub.buscoreidx = BADIDX;
pci = pcie = false;
pcirev = pcierev = NOREV;
pciidx = pcieidx = BADIDX;
for (i = 0; i < sii->numcores; i++) {
uint cid, crev;
ai_setcoreidx(&sii->pub, i);
cid = ai_coreid(&sii->pub);
crev = ai_corerev(&sii->pub);
/* Display cores found */
SI_VMSG(("CORE[%d]: id 0x%x rev %d base 0x%x regs 0x%p\n",
i, cid, crev, sii->coresba[i], sii->regs[i]));
if (bustype == PCI_BUS) {
if (cid == PCI_CORE_ID) {
pciidx = i;
pcirev = crev;
pci = true;
} else if (cid == PCIE_CORE_ID) {
pcieidx = i;
pcierev = crev;
pcie = true;
}
}
/* find the core idx before entering this func. */
if ((savewin && (savewin == sii->coresba[i])) ||
(regs == sii->regs[i]))
*origidx = i;
}
if (pci && pcie) {
if (ai_ispcie(sii))
pci = false;
else
pcie = false;
}
if (pci) {
sii->pub.buscoretype = PCI_CORE_ID;
sii->pub.buscorerev = pcirev;
sii->pub.buscoreidx = pciidx;
} else if (pcie) {
sii->pub.buscoretype = PCIE_CORE_ID;
sii->pub.buscorerev = pcierev;
sii->pub.buscoreidx = pcieidx;
}
SI_VMSG(("Buscore id/type/rev %d/0x%x/%d\n", sii->pub.buscoreidx,
sii->pub.buscoretype, sii->pub.buscorerev));
/* fixup necessary chip/core configurations */
if (sii->pub.bustype == PCI_BUS) {
if (SI_FAST(sii)) {
if (!sii->pch) {
sii->pch = (void *)pcicore_init(
&sii->pub, sii->pbus,
(void *)PCIEREGS(sii));
if (sii->pch == NULL)
return false;
}
}
if (ai_pci_fixcfg(&sii->pub)) {
SI_ERROR(("si_doattach: si_pci_fixcfg failed\n"));
return false;
}
}
/* return to the original core */
ai_setcoreidx(&sii->pub, *origidx);
return true;
}
static __used void ai_nvram_process(si_info_t *sii, char *pvars)
{
uint w = 0;
/* get boardtype and boardrev */
switch (sii->pub.bustype) {
case PCI_BUS:
/* do a pci config read to get subsystem id and subvendor id */
pci_read_config_dword(sii->pbus, PCI_SUBSYSTEM_VENDOR_ID, &w);
/* Let nvram variables override subsystem Vend/ID */
sii->pub.boardvendor = (u16)ai_getdevpathintvar(&sii->pub,
"boardvendor");
if (sii->pub.boardvendor == 0)
sii->pub.boardvendor = w & 0xffff;
else
SI_ERROR(("Overriding boardvendor: 0x%x instead of "
"0x%x\n", sii->pub.boardvendor, w & 0xffff));
sii->pub.boardtype = (u16)ai_getdevpathintvar(&sii->pub,
"boardtype");
if (sii->pub.boardtype == 0)
sii->pub.boardtype = (w >> 16) & 0xffff;
else
SI_ERROR(("Overriding boardtype: 0x%x instead of 0x%x\n"
, sii->pub.boardtype, (w >> 16) & 0xffff));
break;
sii->pub.boardvendor = getintvar(pvars, "manfid");
sii->pub.boardtype = getintvar(pvars, "prodid");
break;
case SI_BUS:
case JTAG_BUS:
sii->pub.boardvendor = PCI_VENDOR_ID_BROADCOM;
sii->pub.boardtype = getintvar(pvars, "prodid");
if (pvars == NULL || (sii->pub.boardtype == 0)) {
sii->pub.boardtype = getintvar(NULL, "boardtype");
if (sii->pub.boardtype == 0)
sii->pub.boardtype = 0xffff;
}
break;
}
if (sii->pub.boardtype == 0) {
SI_ERROR(("si_doattach: unknown board type\n"));
}
sii->pub.boardflags = getintvar(pvars, "boardflags");
}
static si_info_t *ai_doattach(si_info_t *sii, uint devid,
void *regs, uint bustype, void *pbus,
char **vars, uint *varsz)
{
struct si_pub *sih = &sii->pub;
u32 w, savewin;
chipcregs_t *cc;
char *pvars = NULL;
uint socitype;
uint origidx;
memset((unsigned char *) sii, 0, sizeof(si_info_t));
savewin = 0;
sih->buscoreidx = BADIDX;
sii->curmap = regs;
sii->pbus = pbus;
/* check to see if we are a si core mimic'ing a pci core */
if (bustype == PCI_BUS) {
pci_read_config_dword(sii->pbus, PCI_SPROM_CONTROL, &w);
if (w == 0xffffffff) {
SI_ERROR(("%s: incoming bus is PCI but it's a lie, "
" switching to SI devid:0x%x\n",
__func__, devid));
bustype = SI_BUS;
}
}
/* find Chipcommon address */
if (bustype == PCI_BUS) {
pci_read_config_dword(sii->pbus, PCI_BAR0_WIN, &savewin);
if (!GOODCOREADDR(savewin, SI_ENUM_BASE))
savewin = SI_ENUM_BASE;
pci_write_config_dword(sii->pbus, PCI_BAR0_WIN,
SI_ENUM_BASE);
cc = (chipcregs_t *) regs;
} else {
cc = (chipcregs_t *) REG_MAP(SI_ENUM_BASE, SI_CORE_SIZE);
}
sih->bustype = bustype;
/* bus/core/clk setup for register access */
if (!ai_buscore_prep(sii, bustype, devid, pbus)) {
SI_ERROR(("si_doattach: si_core_clk_prep failed %d\n",
bustype));
return NULL;
}
/*
* ChipID recognition.
* We assume we can read chipid at offset 0 from the regs arg.
* If we add other chiptypes (or if we need to support old sdio
* hosts w/o chipcommon), some way of recognizing them needs to
* be added here.
*/
w = R_REG(&cc->chipid);
socitype = (w & CID_TYPE_MASK) >> CID_TYPE_SHIFT;
/* Might as wll fill in chip id rev & pkg */
sih->chip = w & CID_ID_MASK;
sih->chiprev = (w & CID_REV_MASK) >> CID_REV_SHIFT;
sih->chippkg = (w & CID_PKG_MASK) >> CID_PKG_SHIFT;
sih->issim = IS_SIM(sih->chippkg);
/* scan for cores */
if (socitype == SOCI_AI) {
SI_MSG(("Found chip type AI (0x%08x)\n", w));
/* pass chipc address instead of original core base */
ai_scan(&sii->pub, (void *)cc, devid);
} else {
SI_ERROR(("Found chip of unknown type (0x%08x)\n", w));
return NULL;
}
/* no cores found, bail out */
if (sii->numcores == 0) {
SI_ERROR(("si_doattach: could not find any cores\n"));
return NULL;
}
/* bus/core/clk setup */
origidx = SI_CC_IDX;
if (!ai_buscore_setup(sii, cc, bustype, savewin, &origidx, regs)) {
SI_ERROR(("si_doattach: si_buscore_setup failed\n"));
goto exit;
}
/* assume current core is CC */
if ((sii->pub.ccrev == 0x25)
&&
((sih->chip == BCM43236_CHIP_ID
|| sih->chip == BCM43235_CHIP_ID
|| sih->chip == BCM43238_CHIP_ID)
&& (sii->pub.chiprev <= 2))) {
if ((cc->chipstatus & CST43236_BP_CLK) != 0) {
uint clkdiv;
clkdiv = R_REG(&cc->clkdiv);
/* otp_clk_div is even number, 120/14 < 9mhz */
clkdiv = (clkdiv & ~CLKD_OTP) | (14 << CLKD_OTP_SHIFT);
W_REG(&cc->clkdiv, clkdiv);
SI_ERROR(("%s: set clkdiv to %x\n", __func__, clkdiv));
}
udelay(10);
}
/* Init nvram from flash if it exists */
nvram_init();
/* Init nvram from sprom/otp if they exist */
if (srom_var_init
(&sii->pub, bustype, regs, vars, varsz)) {
SI_ERROR(("si_doattach: srom_var_init failed: bad srom\n"));
goto exit;
}
pvars = vars ? *vars : NULL;
ai_nvram_process(sii, pvars);
/* === NVRAM, clock is ready === */
cc = (chipcregs_t *) ai_setcore(sih, CC_CORE_ID, 0);
W_REG(&cc->gpiopullup, 0);
W_REG(&cc->gpiopulldown, 0);
ai_setcoreidx(sih, origidx);
/* PMU specific initializations */
if (PMUCTL_ENAB(sih)) {
u32 xtalfreq;
si_pmu_init(sih);
si_pmu_chip_init(sih);
xtalfreq = getintvar(pvars, "xtalfreq");
/* If xtalfreq var not available, try to measure it */
if (xtalfreq == 0)
xtalfreq = si_pmu_measure_alpclk(sih);
si_pmu_pll_init(sih, xtalfreq);
si_pmu_res_init(sih);
si_pmu_swreg_init(sih);
}
/* setup the GPIO based LED powersave register */
w = getintvar(pvars, "leddc");
if (w == 0)
w = DEFAULT_GPIOTIMERVAL;
ai_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, gpiotimerval), ~0, w);
if (PCIE(sii)) {
pcicore_attach(sii->pch, pvars, SI_DOATTACH);
}
if ((sih->chip == BCM43224_CHIP_ID) ||
(sih->chip == BCM43421_CHIP_ID)) {
/*
* enable 12 mA drive strenth for 43224 and
* set chipControl register bit 15
*/
if (sih->chiprev == 0) {
SI_MSG(("Applying 43224A0 WARs\n"));
ai_corereg(sih, SI_CC_IDX,
offsetof(chipcregs_t, chipcontrol),
CCTRL43224_GPIO_TOGGLE,
CCTRL43224_GPIO_TOGGLE);
si_pmu_chipcontrol(sih, 0, CCTRL_43224A0_12MA_LED_DRIVE,
CCTRL_43224A0_12MA_LED_DRIVE);
}
if (sih->chiprev >= 1) {
SI_MSG(("Applying 43224B0+ WARs\n"));
si_pmu_chipcontrol(sih, 0, CCTRL_43224B0_12MA_LED_DRIVE,
CCTRL_43224B0_12MA_LED_DRIVE);
}
}
if (sih->chip == BCM4313_CHIP_ID) {
/*
* enable 12 mA drive strenth for 4313 and
* set chipControl register bit 1
*/
SI_MSG(("Applying 4313 WARs\n"));
si_pmu_chipcontrol(sih, 0, CCTRL_4313_12MA_LED_DRIVE,
CCTRL_4313_12MA_LED_DRIVE);
}
if (sih->chip == BCM4331_CHIP_ID) {
/* Enable Ext PA lines depending on chip package option */
ai_chipcontrl_epa4331(sih, true);
}
return sii;
exit:
if (sih->bustype == PCI_BUS) {
if (sii->pch)
pcicore_deinit(sii->pch);
sii->pch = NULL;
}
return NULL;
}
/* may be called with core in reset */
void ai_detach(si_t *sih)
{
si_info_t *sii;
uint idx;
struct si_pub *si_local = NULL;
bcopy(&sih, &si_local, sizeof(si_t **));
sii = SI_INFO(sih);
if (sii == NULL)
return;
if (sih->bustype == SI_BUS)
for (idx = 0; idx < SI_MAXCORES; idx++)
if (sii->regs[idx]) {
iounmap(sii->regs[idx]);
sii->regs[idx] = NULL;
}
nvram_exit(); /* free up nvram buffers */
if (sih->bustype == PCI_BUS) {
if (sii->pch)
pcicore_deinit(sii->pch);
sii->pch = NULL;
}
if (sii != &ksii)
kfree(sii);
}
/* register driver interrupt disabling and restoring callback functions */
void
ai_register_intr_callback(si_t *sih, void *intrsoff_fn, void *intrsrestore_fn,
void *intrsenabled_fn, void *intr_arg)
{
si_info_t *sii;
sii = SI_INFO(sih);
sii->intr_arg = intr_arg;
sii->intrsoff_fn = (si_intrsoff_t) intrsoff_fn;
sii->intrsrestore_fn = (si_intrsrestore_t) intrsrestore_fn;
sii->intrsenabled_fn = (si_intrsenabled_t) intrsenabled_fn;
/* save current core id. when this function called, the current core
* must be the core which provides driver functions(il, et, wl, etc.)
*/
sii->dev_coreid = sii->coreid[sii->curidx];
}
void ai_deregister_intr_callback(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
sii->intrsoff_fn = NULL;
}
uint ai_coreid(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
return sii->coreid[sii->curidx];
}
uint ai_coreidx(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
return sii->curidx;
}
bool ai_backplane64(si_t *sih)
{
return (sih->cccaps & CC_CAP_BKPLN64) != 0;
}
/* return index of coreid or BADIDX if not found */
uint ai_findcoreidx(si_t *sih, uint coreid, uint coreunit)
{
si_info_t *sii;
uint found;
uint i;
sii = SI_INFO(sih);
found = 0;
for (i = 0; i < sii->numcores; i++)
if (sii->coreid[i] == coreid) {
if (found == coreunit)
return i;
found++;
}
return BADIDX;
}
/*
* This function changes logical "focus" to the indicated core;
* must be called with interrupts off.
* Moreover, callers should keep interrupts off during switching
* out of and back to d11 core.
*/
void *ai_setcore(si_t *sih, uint coreid, uint coreunit)
{
uint idx;
idx = ai_findcoreidx(sih, coreid, coreunit);
if (!GOODIDX(idx))
return NULL;
return ai_setcoreidx(sih, idx);
}
/* Turn off interrupt as required by ai_setcore, before switch core */
void *ai_switch_core(si_t *sih, uint coreid, uint *origidx, uint *intr_val)
{
void *cc;
si_info_t *sii;
sii = SI_INFO(sih);
if (SI_FAST(sii)) {
/* Overloading the origidx variable to remember the coreid,
* this works because the core ids cannot be confused with
* core indices.
*/
*origidx = coreid;
if (coreid == CC_CORE_ID)
return (void *)CCREGS_FAST(sii);
else if (coreid == sih->buscoretype)
return (void *)PCIEREGS(sii);
}
INTR_OFF(sii, *intr_val);
*origidx = sii->curidx;
cc = ai_setcore(sih, coreid, 0);
return cc;
}
/* restore coreidx and restore interrupt */
void ai_restore_core(si_t *sih, uint coreid, uint intr_val)
{
si_info_t *sii;
sii = SI_INFO(sih);
if (SI_FAST(sii)
&& ((coreid == CC_CORE_ID) || (coreid == sih->buscoretype)))
return;
ai_setcoreidx(sih, coreid);
INTR_RESTORE(sii, intr_val);
}
void ai_write_wrapperreg(si_t *sih, u32 offset, u32 val)
{
si_info_t *sii = SI_INFO(sih);
u32 *w = (u32 *) sii->curwrap;
W_REG(w + (offset / 4), val);
return;
}
/*
* Switch to 'coreidx', issue a single arbitrary 32bit register mask&set
* operation, switch back to the original core, and return the new value.
*
* When using the silicon backplane, no fiddling with interrupts or core
* switches is needed.
*
* Also, when using pci/pcie, we can optimize away the core switching for pci
* registers and (on newer pci cores) chipcommon registers.
*/
uint ai_corereg(si_t *sih, uint coreidx, uint regoff, uint mask, uint val)
{
uint origidx = 0;
u32 *r = NULL;
uint w;
uint intr_val = 0;
bool fast = false;
si_info_t *sii;
sii = SI_INFO(sih);
if (coreidx >= SI_MAXCORES)
return 0;
if (sih->bustype == SI_BUS) {
/* If internal bus, we can always get at everything */
fast = true;
/* map if does not exist */
if (!sii->regs[coreidx]) {
sii->regs[coreidx] = REG_MAP(sii->coresba[coreidx],
SI_CORE_SIZE);
}
r = (u32 *) ((unsigned char *) sii->regs[coreidx] + regoff);
} else if (sih->bustype == PCI_BUS) {
/*
* If pci/pcie, we can get at pci/pcie regs
* and on newer cores to chipc
*/
if ((sii->coreid[coreidx] == CC_CORE_ID) && SI_FAST(sii)) {
/* Chipc registers are mapped at 12KB */
fast = true;
r = (u32 *) ((char *)sii->curmap +
PCI_16KB0_CCREGS_OFFSET + regoff);
} else if (sii->pub.buscoreidx == coreidx) {
/*
* pci registers are at either in the last 2KB of
* an 8KB window or, in pcie and pci rev 13 at 8KB
*/
fast = true;
if (SI_FAST(sii))
r = (u32 *) ((char *)sii->curmap +
PCI_16KB0_PCIREGS_OFFSET +
regoff);
else
r = (u32 *) ((char *)sii->curmap +
((regoff >= SBCONFIGOFF) ?
PCI_BAR0_PCISBR_OFFSET :
PCI_BAR0_PCIREGS_OFFSET) +
regoff);
}
}
if (!fast) {
INTR_OFF(sii, intr_val);
/* save current core index */
origidx = ai_coreidx(&sii->pub);
/* switch core */
r = (u32 *) ((unsigned char *) ai_setcoreidx(&sii->pub, coreidx)
+ regoff);
}
/* mask and set */
if (mask || val) {
w = (R_REG(r) & ~mask) | val;
W_REG(r, w);
}
/* readback */
w = R_REG(r);
if (!fast) {
/* restore core index */
if (origidx != coreidx)
ai_setcoreidx(&sii->pub, origidx);
INTR_RESTORE(sii, intr_val);
}
return w;
}
void ai_core_disable(si_t *sih, u32 bits)
{
si_info_t *sii;
u32 dummy;
aidmp_t *ai;
sii = SI_INFO(sih);
ai = sii->curwrap;
/* if core is already in reset, just return */
if (R_REG(&ai->resetctrl) & AIRC_RESET)
return;
W_REG(&ai->ioctrl, bits);
dummy = R_REG(&ai->ioctrl);
udelay(10);
W_REG(&ai->resetctrl, AIRC_RESET);
udelay(1);
}
/* reset and re-enable a core
* inputs:
* bits - core specific bits that are set during and after reset sequence
* resetbits - core specific bits that are set only during reset sequence
*/
void ai_core_reset(si_t *sih, u32 bits, u32 resetbits)
{
si_info_t *sii;
aidmp_t *ai;
u32 dummy;
sii = SI_INFO(sih);
ai = sii->curwrap;
/*
* Must do the disable sequence first to work
* for arbitrary current core state.
*/
ai_core_disable(sih, (bits | resetbits));
/*
* Now do the initialization sequence.
*/
W_REG(&ai->ioctrl, (bits | SICF_FGC | SICF_CLOCK_EN));
dummy = R_REG(&ai->ioctrl);
W_REG(&ai->resetctrl, 0);
udelay(1);
W_REG(&ai->ioctrl, (bits | SICF_CLOCK_EN));
dummy = R_REG(&ai->ioctrl);
udelay(1);
}
/* return the slow clock source - LPO, XTAL, or PCI */
static uint ai_slowclk_src(si_info_t *sii)
{
chipcregs_t *cc;
u32 val;
if (sii->pub.ccrev < 6) {
if (sii->pub.bustype == PCI_BUS) {
pci_read_config_dword(sii->pbus, PCI_GPIO_OUT,
&val);
if (val & PCI_CFG_GPIO_SCS)
return SCC_SS_PCI;
}
return SCC_SS_XTAL;
} else if (sii->pub.ccrev < 10) {
cc = (chipcregs_t *) ai_setcoreidx(&sii->pub, sii->curidx);
return R_REG(&cc->slow_clk_ctl) & SCC_SS_MASK;
} else /* Insta-clock */
return SCC_SS_XTAL;
}
/*
* return the ILP (slowclock) min or max frequency
* precondition: we've established the chip has dynamic clk control
*/
static uint ai_slowclk_freq(si_info_t *sii, bool max_freq, chipcregs_t *cc)
{
u32 slowclk;
uint div;
slowclk = ai_slowclk_src(sii);
if (sii->pub.ccrev < 6) {
if (slowclk == SCC_SS_PCI)
return max_freq ? (PCIMAXFREQ / 64)
: (PCIMINFREQ / 64);
else
return max_freq ? (XTALMAXFREQ / 32)
: (XTALMINFREQ / 32);
} else if (sii->pub.ccrev < 10) {
div = 4 *
(((R_REG(&cc->slow_clk_ctl) & SCC_CD_MASK) >>
SCC_CD_SHIFT) + 1);
if (slowclk == SCC_SS_LPO)
return max_freq ? LPOMAXFREQ : LPOMINFREQ;
else if (slowclk == SCC_SS_XTAL)
return max_freq ? (XTALMAXFREQ / div)
: (XTALMINFREQ / div);
else if (slowclk == SCC_SS_PCI)
return max_freq ? (PCIMAXFREQ / div)
: (PCIMINFREQ / div);
} else {
/* Chipc rev 10 is InstaClock */
div = R_REG(&cc->system_clk_ctl) >> SYCC_CD_SHIFT;
div = 4 * (div + 1);
return max_freq ? XTALMAXFREQ : (XTALMINFREQ / div);
}
return 0;
}
static void ai_clkctl_setdelay(si_info_t *sii, void *chipcregs)
{
chipcregs_t *cc = (chipcregs_t *) chipcregs;
uint slowmaxfreq, pll_delay, slowclk;
uint pll_on_delay, fref_sel_delay;
pll_delay = PLL_DELAY;
/*
* If the slow clock is not sourced by the xtal then
* add the xtal_on_delay since the xtal will also be
* powered down by dynamic clk control logic.
*/
slowclk = ai_slowclk_src(sii);
if (slowclk != SCC_SS_XTAL)
pll_delay += XTAL_ON_DELAY;
/* Starting with 4318 it is ILP that is used for the delays */
slowmaxfreq =
ai_slowclk_freq(sii, (sii->pub.ccrev >= 10) ? false : true, cc);
pll_on_delay = ((slowmaxfreq * pll_delay) + 999999) / 1000000;
fref_sel_delay = ((slowmaxfreq * FREF_DELAY) + 999999) / 1000000;
W_REG(&cc->pll_on_delay, pll_on_delay);
W_REG(&cc->fref_sel_delay, fref_sel_delay);
}
/* initialize power control delay registers */
void ai_clkctl_init(si_t *sih)
{
si_info_t *sii;
uint origidx = 0;
chipcregs_t *cc;
bool fast;
if (!CCCTL_ENAB(sih))
return;
sii = SI_INFO(sih);
fast = SI_FAST(sii);
if (!fast) {
origidx = sii->curidx;
cc = (chipcregs_t *) ai_setcore(sih, CC_CORE_ID, 0);
if (cc == NULL)
return;
} else {
cc = (chipcregs_t *) CCREGS_FAST(sii);
if (cc == NULL)
return;
}
/* set all Instaclk chip ILP to 1 MHz */
if (sih->ccrev >= 10)
SET_REG(&cc->system_clk_ctl, SYCC_CD_MASK,
(ILP_DIV_1MHZ << SYCC_CD_SHIFT));
ai_clkctl_setdelay(sii, (void *)cc);
if (!fast)
ai_setcoreidx(sih, origidx);
}
/*
* return the value suitable for writing to the
* dot11 core FAST_PWRUP_DELAY register
*/
u16 ai_clkctl_fast_pwrup_delay(si_t *sih)
{
si_info_t *sii;
uint origidx = 0;
chipcregs_t *cc;
uint slowminfreq;
u16 fpdelay;
uint intr_val = 0;
bool fast;
sii = SI_INFO(sih);
if (PMUCTL_ENAB(sih)) {
INTR_OFF(sii, intr_val);
fpdelay = si_pmu_fast_pwrup_delay(sih);
INTR_RESTORE(sii, intr_val);
return fpdelay;
}
if (!CCCTL_ENAB(sih))
return 0;
fast = SI_FAST(sii);
fpdelay = 0;
if (!fast) {
origidx = sii->curidx;
INTR_OFF(sii, intr_val);
cc = (chipcregs_t *) ai_setcore(sih, CC_CORE_ID, 0);
if (cc == NULL)
goto done;
} else {
cc = (chipcregs_t *) CCREGS_FAST(sii);
if (cc == NULL)
goto done;
}
slowminfreq = ai_slowclk_freq(sii, false, cc);
fpdelay = (((R_REG(&cc->pll_on_delay) + 2) * 1000000) +
(slowminfreq - 1)) / slowminfreq;
done:
if (!fast) {
ai_setcoreidx(sih, origidx);
INTR_RESTORE(sii, intr_val);
}
return fpdelay;
}
/* turn primary xtal and/or pll off/on */
int ai_clkctl_xtal(si_t *sih, uint what, bool on)
{
si_info_t *sii;
u32 in, out, outen;
sii = SI_INFO(sih);
switch (sih->bustype) {
case PCI_BUS:
/* pcie core doesn't have any mapping to control the xtal pu */
if (PCIE(sii))
return -1;
pci_read_config_dword(sii->pbus, PCI_GPIO_IN, &in);
pci_read_config_dword(sii->pbus, PCI_GPIO_OUT, &out);
pci_read_config_dword(sii->pbus, PCI_GPIO_OUTEN, &outen);
/*
* Avoid glitching the clock if GPRS is already using it.
* We can't actually read the state of the PLLPD so we infer it
* by the value of XTAL_PU which *is* readable via gpioin.
*/
if (on && (in & PCI_CFG_GPIO_XTAL))
return 0;
if (what & XTAL)
outen |= PCI_CFG_GPIO_XTAL;
if (what & PLL)
outen |= PCI_CFG_GPIO_PLL;
if (on) {
/* turn primary xtal on */
if (what & XTAL) {
out |= PCI_CFG_GPIO_XTAL;
if (what & PLL)
out |= PCI_CFG_GPIO_PLL;
pci_write_config_dword(sii->pbus,
PCI_GPIO_OUT, out);
pci_write_config_dword(sii->pbus,
PCI_GPIO_OUTEN, outen);
udelay(XTAL_ON_DELAY);
}
/* turn pll on */
if (what & PLL) {
out &= ~PCI_CFG_GPIO_PLL;
pci_write_config_dword(sii->pbus,
PCI_GPIO_OUT, out);
mdelay(2);
}
} else {
if (what & XTAL)
out &= ~PCI_CFG_GPIO_XTAL;
if (what & PLL)
out |= PCI_CFG_GPIO_PLL;
pci_write_config_dword(sii->pbus,
PCI_GPIO_OUT, out);
pci_write_config_dword(sii->pbus,
PCI_GPIO_OUTEN, outen);
}
default:
return -1;
}
return 0;
}
/*
* clock control policy function throught chipcommon
*
* set dynamic clk control mode (forceslow, forcefast, dynamic)
* returns true if we are forcing fast clock
* this is a wrapper over the next internal function
* to allow flexible policy settings for outside caller
*/
bool ai_clkctl_cc(si_t *sih, uint mode)
{
si_info_t *sii;
sii = SI_INFO(sih);
/* chipcommon cores prior to rev6 don't support dynamic clock control */
if (sih->ccrev < 6)
return false;
if (PCI_FORCEHT(sii))
return mode == CLK_FAST;
return _ai_clkctl_cc(sii, mode);
}
/* clk control mechanism through chipcommon, no policy checking */
static bool _ai_clkctl_cc(si_info_t *sii, uint mode)
{
uint origidx = 0;
chipcregs_t *cc;
u32 scc;
uint intr_val = 0;
bool fast = SI_FAST(sii);
/* chipcommon cores prior to rev6 don't support dynamic clock control */
if (sii->pub.ccrev < 6)
return false;
if (!fast) {
INTR_OFF(sii, intr_val);
origidx = sii->curidx;
if ((sii->pub.bustype == SI_BUS) &&
ai_setcore(&sii->pub, MIPS33_CORE_ID, 0) &&
(ai_corerev(&sii->pub) <= 7) && (sii->pub.ccrev >= 10))
goto done;
cc = (chipcregs_t *) ai_setcore(&sii->pub, CC_CORE_ID, 0);
} else {
cc = (chipcregs_t *) CCREGS_FAST(sii);
if (cc == NULL)
goto done;
}
if (!CCCTL_ENAB(&sii->pub) && (sii->pub.ccrev < 20))
goto done;
switch (mode) {
case CLK_FAST: /* FORCEHT, fast (pll) clock */
if (sii->pub.ccrev < 10) {
/*
* don't forget to force xtal back
* on before we clear SCC_DYN_XTAL..
*/
ai_clkctl_xtal(&sii->pub, XTAL, ON);
SET_REG(&cc->slow_clk_ctl,
(SCC_XC | SCC_FS | SCC_IP), SCC_IP);
} else if (sii->pub.ccrev < 20) {
OR_REG(&cc->system_clk_ctl, SYCC_HR);
} else {
OR_REG(&cc->clk_ctl_st, CCS_FORCEHT);
}
/* wait for the PLL */
if (PMUCTL_ENAB(&sii->pub)) {
u32 htavail = CCS_HTAVAIL;
SPINWAIT(((R_REG(&cc->clk_ctl_st) & htavail)
== 0), PMU_MAX_TRANSITION_DLY);
} else {
udelay(PLL_DELAY);
}
break;
case CLK_DYNAMIC: /* enable dynamic clock control */
if (sii->pub.ccrev < 10) {
scc = R_REG(&cc->slow_clk_ctl);
scc &= ~(SCC_FS | SCC_IP | SCC_XC);
if ((scc & SCC_SS_MASK) != SCC_SS_XTAL)
scc |= SCC_XC;
W_REG(&cc->slow_clk_ctl, scc);
/*
* for dynamic control, we have to
* release our xtal_pu "force on"
*/
if (scc & SCC_XC)
ai_clkctl_xtal(&sii->pub, XTAL, OFF);
} else if (sii->pub.ccrev < 20) {
/* Instaclock */
AND_REG(&cc->system_clk_ctl, ~SYCC_HR);
} else {
AND_REG(&cc->clk_ctl_st, ~CCS_FORCEHT);
}
break;
default:
break;
}
done:
if (!fast) {
ai_setcoreidx(&sii->pub, origidx);
INTR_RESTORE(sii, intr_val);
}
return mode == CLK_FAST;
}
/* Build device path. Support SI, PCI, and JTAG for now. */
int ai_devpath(si_t *sih, char *path, int size)
{
int slen;
if (!path || size <= 0)
return -1;
switch (sih->bustype) {
case SI_BUS:
case JTAG_BUS:
slen = snprintf(path, (size_t) size, "sb/%u/", ai_coreidx(sih));
break;
case PCI_BUS:
slen = snprintf(path, (size_t) size, "pci/%u/%u/",
((struct pci_dev *)((SI_INFO(sih))->pbus))->bus->number,
PCI_SLOT(
((struct pci_dev *)((SI_INFO(sih))->pbus))->devfn));
break;
default:
slen = -1;
break;
}
if (slen < 0 || slen >= size) {
path[0] = '\0';
return -1;
}
return 0;
}
/* Get a variable, but only if it has a devpath prefix */
char *ai_getdevpathvar(si_t *sih, const char *name)
{
char varname[SI_DEVPATH_BUFSZ + 32];
ai_devpathvar(sih, varname, sizeof(varname), name);
return getvar(NULL, varname);
}
/* Get a variable, but only if it has a devpath prefix */
int ai_getdevpathintvar(si_t *sih, const char *name)
{
#if defined(BCMBUSTYPE) && (BCMBUSTYPE == SI_BUS)
return getintvar(NULL, name);
#else
char varname[SI_DEVPATH_BUFSZ + 32];
ai_devpathvar(sih, varname, sizeof(varname), name);
return getintvar(NULL, varname);
#endif
}
char *ai_getnvramflvar(si_t *sih, const char *name)
{
return getvar(NULL, name);
}
/* Concatenate the dev path with a varname into the given 'var' buffer
* and return the 'var' pointer. Nothing is done to the arguments if
* len == 0 or var is NULL, var is still returned. On overflow, the
* first char will be set to '\0'.
*/
static char *ai_devpathvar(si_t *sih, char *var, int len, const char *name)
{
uint path_len;
if (!var || len <= 0)
return var;
if (ai_devpath(sih, var, len) == 0) {
path_len = strlen(var);
if (strlen(name) + 1 > (uint) (len - path_len))
var[0] = '\0';
else
strncpy(var + path_len, name, len - path_len - 1);
}
return var;
}
/* return true if PCIE capability exists in the pci config space */
static __used bool ai_ispcie(si_info_t *sii)
{
u8 cap_ptr;
if (sii->pub.bustype != PCI_BUS)
return false;
cap_ptr =
pcicore_find_pci_capability(sii->pbus, PCI_CAP_ID_EXP, NULL,
NULL);
if (!cap_ptr)
return false;
return true;
}
bool ai_pci_war16165(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
return PCI(sii) && (sih->buscorerev <= 10);
}
void ai_pci_up(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
/* if not pci bus, we're done */
if (sih->bustype != PCI_BUS)
return;
if (PCI_FORCEHT(sii))
_ai_clkctl_cc(sii, CLK_FAST);
if (PCIE(sii))
pcicore_up(sii->pch, SI_PCIUP);
}
/* Unconfigure and/or apply various WARs when system is going to sleep mode */
void ai_pci_sleep(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
pcicore_sleep(sii->pch);
}
/* Unconfigure and/or apply various WARs when going down */
void ai_pci_down(si_t *sih)
{
si_info_t *sii;
sii = SI_INFO(sih);
/* if not pci bus, we're done */
if (sih->bustype != PCI_BUS)
return;
/* release FORCEHT since chip is going to "down" state */
if (PCI_FORCEHT(sii))
_ai_clkctl_cc(sii, CLK_DYNAMIC);
pcicore_down(sii->pch, SI_PCIDOWN);
}
/*
* Configure the pci core for pci client (NIC) action
* coremask is the bitvec of cores by index to be enabled.
*/
void ai_pci_setup(si_t *sih, uint coremask)
{
si_info_t *sii;
struct sbpciregs *pciregs = NULL;
u32 siflag = 0, w;
uint idx = 0;
sii = SI_INFO(sih);
if (sii->pub.bustype != PCI_BUS)
return;
if (PCI(sii)) {
/* get current core index */
idx = sii->curidx;
/* we interrupt on this backplane flag number */
siflag = ai_flag(sih);
/* switch over to pci core */
pciregs = ai_setcoreidx(sih, sii->pub.buscoreidx);
}
/*
* Enable sb->pci interrupts. Assume
* PCI rev 2.3 support was added in pci core rev 6 and things changed..
*/
if (PCIE(sii) || (PCI(sii) && ((sii->pub.buscorerev) >= 6))) {
/* pci config write to set this core bit in PCIIntMask */
pci_read_config_dword(sii->pbus, PCI_INT_MASK, &w);
w |= (coremask << PCI_SBIM_SHIFT);
pci_write_config_dword(sii->pbus, PCI_INT_MASK, w);
} else {
/* set sbintvec bit for our flag number */
ai_setint(sih, siflag);
}
if (PCI(sii)) {
OR_REG(&pciregs->sbtopci2,
(SBTOPCI_PREF | SBTOPCI_BURST));
if (sii->pub.buscorerev >= 11) {
OR_REG(&pciregs->sbtopci2,
SBTOPCI_RC_READMULTI);
w = R_REG(&pciregs->clkrun);
W_REG(&pciregs->clkrun,
(w | PCI_CLKRUN_DSBL));
w = R_REG(&pciregs->clkrun);
}
/* switch back to previous core */
ai_setcoreidx(sih, idx);
}
}
/*
* Fixup SROMless PCI device's configuration.
* The current core may be changed upon return.
*/
int ai_pci_fixcfg(si_t *sih)
{
uint origidx, pciidx;
struct sbpciregs *pciregs = NULL;
sbpcieregs_t *pcieregs = NULL;
void *regs = NULL;
u16 val16, *reg16 = NULL;
si_info_t *sii = SI_INFO(sih);
/* Fixup PI in SROM shadow area to enable the correct PCI core access */
/* save the current index */
origidx = ai_coreidx(&sii->pub);
/* check 'pi' is correct and fix it if not */
if (sii->pub.buscoretype == PCIE_CORE_ID) {
pcieregs = ai_setcore(&sii->pub, PCIE_CORE_ID, 0);
regs = pcieregs;
reg16 = &pcieregs->sprom[SRSH_PI_OFFSET];
} else if (sii->pub.buscoretype == PCI_CORE_ID) {
pciregs = ai_setcore(&sii->pub, PCI_CORE_ID, 0);
regs = pciregs;
reg16 = &pciregs->sprom[SRSH_PI_OFFSET];
}
pciidx = ai_coreidx(&sii->pub);
val16 = R_REG(reg16);
if (((val16 & SRSH_PI_MASK) >> SRSH_PI_SHIFT) != (u16) pciidx) {
val16 =
(u16) (pciidx << SRSH_PI_SHIFT) | (val16 &
~SRSH_PI_MASK);
W_REG(reg16, val16);
}
/* restore the original index */
ai_setcoreidx(&sii->pub, origidx);
pcicore_hwup(sii->pch);
return 0;
}
/* mask&set gpiocontrol bits */
u32 ai_gpiocontrol(si_t *sih, u32 mask, u32 val, u8 priority)
{
uint regoff;
regoff = 0;
/* gpios could be shared on router platforms
* ignore reservation if it's high priority (e.g., test apps)
*/
if ((priority != GPIO_HI_PRIORITY) &&
(sih->bustype == SI_BUS) && (val || mask)) {
mask = priority ? (ai_gpioreservation & mask) :
((ai_gpioreservation | mask) & ~(ai_gpioreservation));
val &= mask;
}
regoff = offsetof(chipcregs_t, gpiocontrol);
return ai_corereg(sih, SI_CC_IDX, regoff, mask, val);
}
void ai_chipcontrl_epa4331(si_t *sih, bool on)
{
si_info_t *sii;
chipcregs_t *cc;
uint origidx;
u32 val;
sii = SI_INFO(sih);
origidx = ai_coreidx(sih);
cc = (chipcregs_t *) ai_setcore(sih, CC_CORE_ID, 0);
val = R_REG(&cc->chipcontrol);
if (on) {
if (sih->chippkg == 9 || sih->chippkg == 0xb) {
/* Ext PA Controls for 4331 12x9 Package */
W_REG(&cc->chipcontrol, val |
(CCTRL4331_EXTPA_EN |
CCTRL4331_EXTPA_ON_GPIO2_5));
} else {
/* Ext PA Controls for 4331 12x12 Package */
W_REG(&cc->chipcontrol,
val | (CCTRL4331_EXTPA_EN));
}
} else {
val &= ~(CCTRL4331_EXTPA_EN | CCTRL4331_EXTPA_ON_GPIO2_5);
W_REG(&cc->chipcontrol, val);
}
ai_setcoreidx(sih, origidx);
}
/* Enable BT-COEX & Ex-PA for 4313 */
void ai_epa_4313war(si_t *sih)
{
si_info_t *sii;
chipcregs_t *cc;
uint origidx;
sii = SI_INFO(sih);
origidx = ai_coreidx(sih);
cc = (chipcregs_t *) ai_setcore(sih, CC_CORE_ID, 0);
/* EPA Fix */
W_REG(&cc->gpiocontrol,
R_REG(&cc->gpiocontrol) | GPIO_CTRL_EPA_EN_MASK);
ai_setcoreidx(sih, origidx);
}
/* check if the device is removed */
bool ai_deviceremoved(si_t *sih)
{
u32 w;
si_info_t *sii;
sii = SI_INFO(sih);
switch (sih->bustype) {
case PCI_BUS:
pci_read_config_dword(sii->pbus, PCI_VENDOR_ID, &w);
if ((w & 0xFFFF) != PCI_VENDOR_ID_BROADCOM)
return true;
break;
}
return false;
}
bool ai_is_sprom_available(si_t *sih)
{
if (sih->ccrev >= 31) {
si_info_t *sii;
uint origidx;
chipcregs_t *cc;
u32 sromctrl;
if ((sih->cccaps & CC_CAP_SROM) == 0)
return false;
sii = SI_INFO(sih);
origidx = sii->curidx;
cc = ai_setcoreidx(sih, SI_CC_IDX);
sromctrl = R_REG(&cc->sromcontrol);
ai_setcoreidx(sih, origidx);
return sromctrl & SRC_PRESENT;
}
switch (sih->chip) {
case BCM4329_CHIP_ID:
return (sih->chipst & CST4329_SPROM_SEL) != 0;
case BCM4319_CHIP_ID:
return (sih->chipst & CST4319_SPROM_SEL) != 0;
case BCM4336_CHIP_ID:
return (sih->chipst & CST4336_SPROM_PRESENT) != 0;
case BCM4330_CHIP_ID:
return (sih->chipst & CST4330_SPROM_PRESENT) != 0;
case BCM4313_CHIP_ID:
return (sih->chipst & CST4313_SPROM_PRESENT) != 0;
case BCM4331_CHIP_ID:
return (sih->chipst & CST4331_SPROM_PRESENT) != 0;
default:
return true;
}
}
bool ai_is_otp_disabled(si_t *sih)
{
switch (sih->chip) {
case BCM4329_CHIP_ID:
return (sih->chipst & CST4329_SPROM_OTP_SEL_MASK) ==
CST4329_OTP_PWRDN;
case BCM4319_CHIP_ID:
return (sih->chipst & CST4319_SPROM_OTP_SEL_MASK) ==
CST4319_OTP_PWRDN;
case BCM4336_CHIP_ID:
return (sih->chipst & CST4336_OTP_PRESENT) == 0;
case BCM4330_CHIP_ID:
return (sih->chipst & CST4330_OTP_PRESENT) == 0;
case BCM4313_CHIP_ID:
return (sih->chipst & CST4313_OTP_PRESENT) == 0;
/* These chips always have their OTP on */
case BCM43224_CHIP_ID:
case BCM43225_CHIP_ID:
case BCM43421_CHIP_ID:
case BCM43235_CHIP_ID:
case BCM43236_CHIP_ID:
case BCM43238_CHIP_ID:
case BCM4331_CHIP_ID:
default:
return false;
}
}
bool ai_is_otp_powered(si_t *sih)
{
if (PMUCTL_ENAB(sih))
return si_pmu_is_otp_powered(sih);
return true;
}
void ai_otp_power(si_t *sih, bool on)
{
if (PMUCTL_ENAB(sih))
si_pmu_otp_power(sih, on);
udelay(1000);
}
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