+++ /dev/null
-/*
- * 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/types.h>
-#include <bcmdefs.h>
-#ifdef BRCM_FULLMAC
-#include <linux/netdevice.h>
-#endif
-#include <bcmutils.h>
-#include <siutils.h>
-#include <bcmdevs.h>
-#include <hndsoc.h>
-#include <sbchipc.h>
-#include <pci_core.h>
-#include <pcicfg.h>
-#include <sbpcmcia.h>
-#include "siutils_priv.h"
-
-/* local prototypes */
-static uint _sb_coreidx(si_info_t *sii, u32 sba);
-static uint _sb_scan(si_info_t *sii, u32 sba, void *regs, uint bus,
- u32 sbba, uint ncores);
-static u32 _sb_coresba(si_info_t *sii);
-static void *_sb_setcoreidx(si_info_t *sii, uint coreidx);
-
-#define SET_SBREG(sii, r, mask, val) \
- W_SBREG((sii), (r), ((R_SBREG((sii), (r)) & ~(mask)) | (val)))
-#define REGS2SB(va) (sbconfig_t *) ((s8 *)(va) + SBCONFIGOFF)
-
-/* sonicsrev */
-#define SONICS_2_2 (SBIDL_RV_2_2 >> SBIDL_RV_SHIFT)
-#define SONICS_2_3 (SBIDL_RV_2_3 >> SBIDL_RV_SHIFT)
-
-#define R_SBREG(sii, sbr) sb_read_sbreg((sii), (sbr))
-#define W_SBREG(sii, sbr, v) sb_write_sbreg((sii), (sbr), (v))
-#define AND_SBREG(sii, sbr, v) \
- W_SBREG((sii), (sbr), (R_SBREG((sii), (sbr)) & (v)))
-#define OR_SBREG(sii, sbr, v) \
- W_SBREG((sii), (sbr), (R_SBREG((sii), (sbr)) | (v)))
-
-static u32 sb_read_sbreg(si_info_t *sii, volatile u32 *sbr)
-{
- return R_REG(sbr);
-}
-
-static void sb_write_sbreg(si_info_t *sii, volatile u32 *sbr, u32 v)
-{
- W_REG(sbr, v);
-}
-
-uint sb_coreid(si_t *sih)
-{
- si_info_t *sii;
- sbconfig_t *sb;
-
- sii = SI_INFO(sih);
- sb = REGS2SB(sii->curmap);
-
- return (R_SBREG(sii, &sb->sbidhigh) & SBIDH_CC_MASK) >>
- SBIDH_CC_SHIFT;
-}
-
-/* return core index of the core with address 'sba' */
-static uint _sb_coreidx(si_info_t *sii, u32 sba)
-{
- uint i;
-
- for (i = 0; i < sii->numcores; i++)
- if (sba == sii->coresba[i])
- return i;
- return BADIDX;
-}
-
-/* return core address of the current core */
-static u32 _sb_coresba(si_info_t *sii)
-{
- u32 sbaddr = 0;
-
- switch (sii->pub.bustype) {
- case SPI_BUS:
- case SDIO_BUS:
- sbaddr = (u32)(unsigned long)sii->curmap;
- break;
- default:
- ASSERT(0);
- break;
- }
-
- return sbaddr;
-}
-
-uint sb_corerev(si_t *sih)
-{
- si_info_t *sii;
- sbconfig_t *sb;
- uint sbidh;
-
- sii = SI_INFO(sih);
- sb = REGS2SB(sii->curmap);
- sbidh = R_SBREG(sii, &sb->sbidhigh);
-
- return SBCOREREV(sbidh);
-}
-
-bool sb_iscoreup(si_t *sih)
-{
- si_info_t *sii;
- sbconfig_t *sb;
-
- sii = SI_INFO(sih);
- sb = REGS2SB(sii->curmap);
-
- return (R_SBREG(sii, &sb->sbtmstatelow) &
- (SBTML_RESET | SBTML_REJ_MASK |
- (SICF_CLOCK_EN << SBTML_SICF_SHIFT))) ==
- (SICF_CLOCK_EN << SBTML_SICF_SHIFT);
-}
-
-/*
- * 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 fidleing with interrupts
- * or core switches are needed.
- *
- * Also, when using pci/pcie, we can optimize away the core switching
- * for pci registers
- * and (on newer pci cores) chipcommon registers.
- */
-uint sb_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);
-
- ASSERT(GOODIDX(coreidx));
- ASSERT(regoff < SI_CORE_SIZE);
- ASSERT((val & ~mask) == 0);
-
- if (coreidx >= SI_MAXCORES)
- return 0;
-
- if (!fast) {
- INTR_OFF(sii, intr_val);
-
- /* save current core index */
- origidx = si_coreidx(&sii->pub);
-
- /* switch core */
- r = (u32 *) ((unsigned char *) sb_setcoreidx(&sii->pub, coreidx) +
- regoff);
- }
- ASSERT(r != NULL);
-
- /* mask and set */
- if (mask || val) {
- if (regoff >= SBCONFIGOFF) {
- w = (R_SBREG(sii, r) & ~mask) | val;
- W_SBREG(sii, r, w);
- } else {
- w = (R_REG(r) & ~mask) | val;
- W_REG(r, w);
- }
- }
-
- /* readback */
- if (regoff >= SBCONFIGOFF)
- w = R_SBREG(sii, r);
- else
- w = R_REG(r);
-
- if (!fast) {
- /* restore core index */
- if (origidx != coreidx)
- sb_setcoreidx(&sii->pub, origidx);
-
- INTR_RESTORE(sii, intr_val);
- }
-
- return w;
-}
-
-/* Scan the enumeration space to find all cores starting from the given
- * bus 'sbba'. Append coreid and other info to the lists in 'si'. 'sba'
- * is the default core address at chip POR time and 'regs' is the virtual
- * address that the default core is mapped at. 'ncores' is the number of
- * cores expected on bus 'sbba'. It returns the total number of cores
- * starting from bus 'sbba', inclusive.
- */
-#define SB_MAXBUSES 2
-static uint _sb_scan(si_info_t *sii, u32 sba, void *regs, uint bus, u32 sbba,
- uint numcores)
-{
- uint next;
- uint ncc = 0;
- uint i;
-
- if (bus >= SB_MAXBUSES) {
- SI_ERROR(("_sb_scan: bus 0x%08x at level %d is too deep to "
- "scan\n", sbba, bus));
- return 0;
- }
- SI_MSG(("_sb_scan: scan bus 0x%08x assume %u cores\n",
- sbba, numcores));
-
- /* Scan all cores on the bus starting from core 0.
- * Core addresses must be contiguous on each bus.
- */
- for (i = 0, next = sii->numcores;
- i < numcores && next < SB_BUS_MAXCORES; i++, next++) {
- sii->coresba[next] = sbba + (i * SI_CORE_SIZE);
-
- /* change core to 'next' and read its coreid */
- sii->curmap = _sb_setcoreidx(sii, next);
- sii->curidx = next;
-
- sii->coreid[next] = sb_coreid(&sii->pub);
-
- /* core specific processing... */
- /* chipc provides # cores */
- if (sii->coreid[next] == CC_CORE_ID) {
- chipcregs_t *cc = (chipcregs_t *) sii->curmap;
- u32 ccrev = sb_corerev(&sii->pub);
-
- /* determine numcores - this is the
- total # cores in the chip */
- if (((ccrev == 4) || (ccrev >= 6)))
- numcores =
- (R_REG(&cc->chipid) & CID_CC_MASK)
- >> CID_CC_SHIFT;
- else {
- /* Older chips */
- SI_ERROR(("sb_chip2numcores: unsupported chip "
- "0x%x\n", sii->pub.chip));
- ASSERT(0);
- numcores = 1;
- }
-
- SI_VMSG(("_sb_scan: %u cores in the chip %s\n",
- numcores, sii->pub.issim ? "QT" : ""));
- }
- /* scan bridged SB(s) and add results to the end of the list */
- else if (sii->coreid[next] == OCP_CORE_ID) {
- sbconfig_t *sb = REGS2SB(sii->curmap);
- u32 nsbba = R_SBREG(sii, &sb->sbadmatch1);
- uint nsbcc;
-
- sii->numcores = next + 1;
-
- if ((nsbba & 0xfff00000) != SI_ENUM_BASE)
- continue;
- nsbba &= 0xfffff000;
- if (_sb_coreidx(sii, nsbba) != BADIDX)
- continue;
-
- nsbcc =
- (R_SBREG(sii, &sb->sbtmstatehigh) & 0x000f0000) >>
- 16;
- nsbcc = _sb_scan(sii, sba, regs, bus + 1, nsbba, nsbcc);
- if (sbba == SI_ENUM_BASE)
- numcores -= nsbcc;
- ncc += nsbcc;
- }
- }
-
- SI_MSG(("_sb_scan: found %u cores on bus 0x%08x\n", i, sbba));
-
- sii->numcores = i + ncc;
- return sii->numcores;
-}
-
-/* scan the sb enumerated space to identify all cores */
-void sb_scan(si_t *sih, void *regs, uint devid)
-{
- si_info_t *sii;
- u32 origsba;
- sbconfig_t *sb;
-
- sii = SI_INFO(sih);
- sb = REGS2SB(sii->curmap);
-
- sii->pub.socirev =
- (R_SBREG(sii, &sb->sbidlow) & SBIDL_RV_MASK) >> SBIDL_RV_SHIFT;
-
- /* Save the current core info and validate it later till we know
- * for sure what is good and what is bad.
- */
- origsba = _sb_coresba(sii);
-
- /* scan all SB(s) starting from SI_ENUM_BASE */
- sii->numcores = _sb_scan(sii, origsba, regs, 0, SI_ENUM_BASE, 1);
-}
-
-/*
- * 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 *sb_setcoreidx(si_t *sih, uint coreidx)
-{
- si_info_t *sii;
-
- sii = SI_INFO(sih);
-
- if (coreidx >= sii->numcores)
- return NULL;
-
- /*
- * If the user has provided an interrupt mask enabled function,
- * then assert interrupts are disabled before switching the core.
- */
- ASSERT((sii->intrsenabled_fn == NULL)
- || !(*(sii)->intrsenabled_fn) ((sii)->intr_arg));
-
- sii->curmap = _sb_setcoreidx(sii, coreidx);
- sii->curidx = coreidx;
-
- return sii->curmap;
-}
-
-/* This function changes the logical "focus" to the indicated core.
- * Return the current core's virtual address.
- */
-static void *_sb_setcoreidx(si_info_t *sii, uint coreidx)
-{
- u32 sbaddr = sii->coresba[coreidx];
- void *regs;
-
- switch (sii->pub.bustype) {
-#ifdef BCMSDIO
- case SPI_BUS:
- case SDIO_BUS:
- /* map new one */
- if (!sii->regs[coreidx]) {
- sii->regs[coreidx] = (void *)sbaddr;
- ASSERT(GOODREGS(sii->regs[coreidx]));
- }
- regs = sii->regs[coreidx];
- break;
-#endif /* BCMSDIO */
- default:
- ASSERT(0);
- regs = NULL;
- break;
- }
-
- return regs;
-}
-
-void sb_core_disable(si_t *sih, u32 bits)
-{
- si_info_t *sii;
- volatile u32 dummy;
- sbconfig_t *sb;
-
- sii = SI_INFO(sih);
-
- ASSERT(GOODREGS(sii->curmap));
- sb = REGS2SB(sii->curmap);
-
- /* if core is already in reset, just return */
- if (R_SBREG(sii, &sb->sbtmstatelow) & SBTML_RESET)
- return;
-
- /* if clocks are not enabled, put into reset and return */
- if ((R_SBREG(sii, &sb->sbtmstatelow) &
- (SICF_CLOCK_EN << SBTML_SICF_SHIFT)) == 0)
- goto disable;
-
- /* set target reject and spin until busy is clear
- (preserve core-specific bits) */
- OR_SBREG(sii, &sb->sbtmstatelow, SBTML_REJ);
- dummy = R_SBREG(sii, &sb->sbtmstatelow);
- udelay(1);
- SPINWAIT((R_SBREG(sii, &sb->sbtmstatehigh) & SBTMH_BUSY), 100000);
- if (R_SBREG(sii, &sb->sbtmstatehigh) & SBTMH_BUSY)
- SI_ERROR(("%s: target state still busy\n", __func__));
-
- if (R_SBREG(sii, &sb->sbidlow) & SBIDL_INIT) {
- OR_SBREG(sii, &sb->sbimstate, SBIM_RJ);
- dummy = R_SBREG(sii, &sb->sbimstate);
- udelay(1);
- SPINWAIT((R_SBREG(sii, &sb->sbimstate) & SBIM_BY), 100000);
- }
-
- /* set reset and reject while enabling the clocks */
- W_SBREG(sii, &sb->sbtmstatelow,
- (((bits | SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) |
- SBTML_REJ | SBTML_RESET));
- dummy = R_SBREG(sii, &sb->sbtmstatelow);
- udelay(10);
-
- /* don't forget to clear the initiator reject bit */
- if (R_SBREG(sii, &sb->sbidlow) & SBIDL_INIT)
- AND_SBREG(sii, &sb->sbimstate, ~SBIM_RJ);
-
-disable:
- /* leave reset and reject asserted */
- W_SBREG(sii, &sb->sbtmstatelow,
- ((bits << SBTML_SICF_SHIFT) | SBTML_REJ | SBTML_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 sb_core_reset(si_t *sih, u32 bits, u32 resetbits)
-{
- si_info_t *sii;
- sbconfig_t *sb;
- volatile u32 dummy;
-
- sii = SI_INFO(sih);
- ASSERT(GOODREGS(sii->curmap));
- sb = REGS2SB(sii->curmap);
-
- /*
- * Must do the disable sequence first to work for
- * arbitrary current core state.
- */
- sb_core_disable(sih, (bits | resetbits));
-
- /*
- * Now do the initialization sequence.
- */
-
- /* set reset while enabling the clock and
- forcing them on throughout the core */
- W_SBREG(sii, &sb->sbtmstatelow,
- (((bits | resetbits | SICF_FGC | SICF_CLOCK_EN) <<
- SBTML_SICF_SHIFT) | SBTML_RESET));
- dummy = R_SBREG(sii, &sb->sbtmstatelow);
- udelay(1);
-
- if (R_SBREG(sii, &sb->sbtmstatehigh) & SBTMH_SERR)
- W_SBREG(sii, &sb->sbtmstatehigh, 0);
-
- dummy = R_SBREG(sii, &sb->sbimstate);
- if (dummy & (SBIM_IBE | SBIM_TO))
- AND_SBREG(sii, &sb->sbimstate, ~(SBIM_IBE | SBIM_TO));
-
- /* clear reset and allow it to propagate throughout the core */
- W_SBREG(sii, &sb->sbtmstatelow,
- ((bits | resetbits | SICF_FGC | SICF_CLOCK_EN) <<
- SBTML_SICF_SHIFT));
- dummy = R_SBREG(sii, &sb->sbtmstatelow);
- udelay(1);
-
- /* leave clock enabled */
- W_SBREG(sii, &sb->sbtmstatelow,
- ((bits | SICF_CLOCK_EN) << SBTML_SICF_SHIFT));
- dummy = R_SBREG(sii, &sb->sbtmstatelow);
- udelay(1);
-}
projects / platform / upstream / kernel-adaptation-pc.git / commitdiff