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brcmfmac: add support for dongle ARM CR4 core 

Newer WiFi chip use ARM CR4 core to achieve higher performance. Add necessary
code for host driver in order to support CR4 core.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
hifive-unleashed-5.1
Franky Lin 2013-04-11 13:28:51 +02:00 committed by John W. Linville
parent 83cf17aa80
commit 1640f28f6b
5 changed files with 148 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
View File

@ -2652,7 +2652,7 @@ static int brcmf_sdio_readshared(struct brcmf_sdio *bus,
struct sdpcm_shared_le sh_le;
__le32 addr_le;
shaddr = bus->ramsize - 4;
shaddr = bus->ci->rambase + bus->ramsize - 4;
/*
* Read last word in socram to determine
@ -3030,10 +3030,11 @@ static int brcmf_sdbrcm_get_image(char *buf, int len, struct brcmf_sdio *bus)
static int brcmf_sdbrcm_download_code_file(struct brcmf_sdio *bus)
{
int offset = 0;
int offset;
uint len;
u8 *memblock = NULL, *memptr;
int ret;
u8 idx;
brcmf_dbg(INFO, "Enter\n");
@ -3054,9 +3055,14 @@ static int brcmf_sdbrcm_download_code_file(struct brcmf_sdio *bus)
memptr += (BRCMF_SDALIGN -
((u32)(unsigned long)memblock % BRCMF_SDALIGN));
offset = bus->ci->rambase;
/* Download image */
while ((len =
brcmf_sdbrcm_get_image((char *)memptr, MEMBLOCK, bus))) {
len = brcmf_sdbrcm_get_image((char *)memptr, MEMBLOCK, bus);
idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_ARM_CR4);
if (BRCMF_MAX_CORENUM != idx)
memcpy(&bus->ci->rst_vec, memptr, sizeof(bus->ci->rst_vec));
while (len) {
ret = brcmf_sdio_ramrw(bus->sdiodev, true, offset, memptr, len);
if (ret) {
brcmf_err("error %d on writing %d membytes at 0x%08x\n",
@ -3065,6 +3071,7 @@ static int brcmf_sdbrcm_download_code_file(struct brcmf_sdio *bus)
}
offset += MEMBLOCK;
len = brcmf_sdbrcm_get_image((char *)memptr, MEMBLOCK, bus);
}
err:

150
drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c
View File

@ -52,6 +52,9 @@
#define CIB_REV_MASK 0xff000000
#define CIB_REV_SHIFT 24
/* ARM CR4 core specific control flag bits */
#define ARMCR4_BCMA_IOCTL_CPUHALT 0x0020
#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
/* SDIO Pad drive strength to select value mappings */
struct sdiod_drive_str {
@ -149,7 +152,7 @@ brcmf_sdio_ai_iscoreup(struct brcmf_sdio_dev *sdiodev,
static void
brcmf_sdio_sb_coredisable(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u16 coreid)
struct chip_info *ci, u16 coreid, u32 core_bits)
{
u32 regdata, base;
u8 idx;
@ -235,7 +238,7 @@ brcmf_sdio_sb_coredisable(struct brcmf_sdio_dev *sdiodev,
static void
brcmf_sdio_ai_coredisable(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u16 coreid)
struct chip_info *ci, u16 coreid, u32 core_bits)
{
u8 idx;
u32 regdata;
@ -249,19 +252,36 @@ brcmf_sdio_ai_coredisable(struct brcmf_sdio_dev *sdiodev,
if ((regdata & BCMA_RESET_CTL_RESET) != 0)
return;
brcmf_sdio_regwl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL, 0, NULL);
regdata = brcmf_sdio_regrl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
/* ensure no pending backplane operation
* 300uc should be sufficient for backplane ops to be finish
* extra 10ms is taken into account for firmware load stage
* after 10300us carry on disabling the core anyway
*/
SPINWAIT(brcmf_sdio_regrl(sdiodev,
ci->c_inf[idx].wrapbase+BCMA_RESET_ST,
NULL), 10300);
regdata = brcmf_sdio_regrl(sdiodev,
ci->c_inf[idx].wrapbase+BCMA_RESET_ST,
NULL);
udelay(10);
if (regdata)
brcmf_err("disabling core 0x%x with reset status %x\n",
coreid, regdata);
brcmf_sdio_regwl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_RESET_CTL,
BCMA_RESET_CTL_RESET, NULL);
udelay(1);
brcmf_sdio_regwl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
core_bits, NULL);
regdata = brcmf_sdio_regrl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
NULL);
usleep_range(10, 20);
}
static void
brcmf_sdio_sb_resetcore(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u16 coreid)
struct chip_info *ci, u16 coreid, u32 core_bits)
{
u32 regdata;
u8 idx;
@ -272,7 +292,7 @@ brcmf_sdio_sb_resetcore(struct brcmf_sdio_dev *sdiodev,
* Must do the disable sequence first to work for
* arbitrary current core state.
*/
brcmf_sdio_sb_coredisable(sdiodev, ci, coreid);
brcmf_sdio_sb_coredisable(sdiodev, ci, coreid, 0);
/*
* Now do the initialization sequence.
@ -325,7 +345,7 @@ brcmf_sdio_sb_resetcore(struct brcmf_sdio_dev *sdiodev,
static void
brcmf_sdio_ai_resetcore(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u16 coreid)
struct chip_info *ci, u16 coreid, u32 core_bits)
{
u8 idx;
u32 regdata;
@ -333,28 +353,67 @@ brcmf_sdio_ai_resetcore(struct brcmf_sdio_dev *sdiodev,
idx = brcmf_sdio_chip_getinfidx(ci, coreid);
/* must disable first to work for arbitrary current core state */
brcmf_sdio_ai_coredisable(sdiodev, ci, coreid);
brcmf_sdio_ai_coredisable(sdiodev, ci, coreid, core_bits);
/* now do initialization sequence */
brcmf_sdio_regwl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
BCMA_IOCTL_FGC | BCMA_IOCTL_CLK, NULL);
core_bits | BCMA_IOCTL_FGC | BCMA_IOCTL_CLK, NULL);
regdata = brcmf_sdio_regrl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
NULL);
brcmf_sdio_regwl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_RESET_CTL,
0, NULL);
regdata = brcmf_sdio_regrl(sdiodev,
ci->c_inf[idx].wrapbase+BCMA_RESET_CTL,
NULL);
udelay(1);
brcmf_sdio_regwl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
BCMA_IOCTL_CLK, NULL);
core_bits | BCMA_IOCTL_CLK, NULL);
regdata = brcmf_sdio_regrl(sdiodev, ci->c_inf[idx].wrapbase+BCMA_IOCTL,
NULL);
udelay(1);
}
#ifdef DEBUG
/* safety check for chipinfo */
static int brcmf_sdio_chip_cichk(struct chip_info *ci)
{
u8 core_idx;
/* check RAM core presence for ARM CM3 core */
core_idx = brcmf_sdio_chip_getinfidx(ci, BCMA_CORE_ARM_CM3);
if (BRCMF_MAX_CORENUM != core_idx) {
core_idx = brcmf_sdio_chip_getinfidx(ci,
BCMA_CORE_INTERNAL_MEM);
if (BRCMF_MAX_CORENUM == core_idx) {
brcmf_err("RAM core not provided with ARM CM3 core\n");
return -ENODEV;
}
}
/* check RAM base for ARM CR4 core */
core_idx = brcmf_sdio_chip_getinfidx(ci, BCMA_CORE_ARM_CR4);
if (BRCMF_MAX_CORENUM != core_idx) {
if (ci->rambase == 0) {
brcmf_err("RAM base not provided with ARM CR4 core\n");
return -ENOMEM;
}
}
return 0;
}
#else /* DEBUG */
static inline int brcmf_sdio_chip_cichk(struct chip_info *ci)
{
return 0;
}
#endif
static int brcmf_sdio_chip_recognition(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u32 regs)
{
u32 regdata;
int ret;
/* Get CC core rev
* Chipid is assume to be at offset 0 from regs arg
@ -439,6 +498,10 @@ static int brcmf_sdio_chip_recognition(struct brcmf_sdio_dev *sdiodev,
return -ENODEV;
}
ret = brcmf_sdio_chip_cichk(ci);
if (ret)
return ret;
switch (ci->socitype) {
case SOCI_SB:
ci->iscoreup = brcmf_sdio_sb_iscoreup;
@ -538,7 +601,7 @@ brcmf_sdio_chip_buscoresetup(struct brcmf_sdio_dev *sdiodev,
* Make sure any on-chip ARM is off (in case strapping is wrong),
* or downloaded code was already running.
*/
ci->coredisable(sdiodev, ci, BCMA_CORE_ARM_CM3);
ci->coredisable(sdiodev, ci, BCMA_CORE_ARM_CM3, 0);
}
int brcmf_sdio_chip_attach(struct brcmf_sdio_dev *sdiodev,
@ -701,7 +764,7 @@ static bool brcmf_sdio_chip_writenvram(struct brcmf_sdio_dev *sdiodev,
u32 token;
__le32 token_le;
nvram_addr = (ci->ramsize - 4) - nvram_sz;
nvram_addr = (ci->ramsize - 4) - nvram_sz + ci->rambase;
/* Write the vars list */
err = brcmf_sdio_ramrw(sdiodev, true, nvram_addr, nvram_dat, nvram_sz);
@ -728,7 +791,7 @@ static bool brcmf_sdio_chip_writenvram(struct brcmf_sdio_dev *sdiodev,
nvram_addr, nvram_sz, token);
/* Write the length token to the last word */
if (brcmf_sdio_ramrw(sdiodev, true, (ci->ramsize - 4),
if (brcmf_sdio_ramrw(sdiodev, true, (ci->ramsize - 4 + ci->rambase),
(u8 *)&token_le, 4))
return false;
@ -741,8 +804,8 @@ brcmf_sdio_chip_cm3_enterdl(struct brcmf_sdio_dev *sdiodev,
{
u32 zeros = 0;
ci->coredisable(sdiodev, ci, BCMA_CORE_ARM_CM3);
ci->resetcore(sdiodev, ci, BCMA_CORE_INTERNAL_MEM);
ci->coredisable(sdiodev, ci, BCMA_CORE_ARM_CM3, 0);
ci->resetcore(sdiodev, ci, BCMA_CORE_INTERNAL_MEM, 0);
/* clear length token */
brcmf_sdio_ramrw(sdiodev, true, ci->ramsize - 4, (u8 *)&zeros, 4);
@ -769,7 +832,41 @@ brcmf_sdio_chip_cm3_exitdl(struct brcmf_sdio_dev *sdiodev, struct chip_info *ci,
reg_addr += offsetof(struct sdpcmd_regs, intstatus);
brcmf_sdio_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL);
ci->resetcore(sdiodev, ci, BCMA_CORE_ARM_CM3);
ci->resetcore(sdiodev, ci, BCMA_CORE_ARM_CM3, 0);
return true;
}
static inline void
brcmf_sdio_chip_cr4_enterdl(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci)
{
ci->resetcore(sdiodev, ci, BCMA_CORE_ARM_CR4,
ARMCR4_BCMA_IOCTL_CPUHALT);
}
static bool
brcmf_sdio_chip_cr4_exitdl(struct brcmf_sdio_dev *sdiodev, struct chip_info *ci,
char *nvram_dat, uint nvram_sz)
{
u8 core_idx;
u32 reg_addr;
if (!brcmf_sdio_chip_writenvram(sdiodev, ci, nvram_dat, nvram_sz))
return false;
/* clear all interrupts */
core_idx = brcmf_sdio_chip_getinfidx(ci, BCMA_CORE_SDIO_DEV);
reg_addr = ci->c_inf[core_idx].base;
reg_addr += offsetof(struct sdpcmd_regs, intstatus);
brcmf_sdio_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL);
/* Write reset vector to address 0 */
brcmf_sdio_ramrw(sdiodev, true, 0, (void *)&ci->rst_vec,
sizeof(ci->rst_vec));
/* restore ARM */
ci->resetcore(sdiodev, ci, BCMA_CORE_ARM_CR4, 0);
return true;
}
@ -777,12 +874,27 @@ brcmf_sdio_chip_cm3_exitdl(struct brcmf_sdio_dev *sdiodev, struct chip_info *ci,
void brcmf_sdio_chip_enter_download(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci)
{
brcmf_sdio_chip_cm3_enterdl(sdiodev, ci);
u8 arm_core_idx;
arm_core_idx = brcmf_sdio_chip_getinfidx(ci, BCMA_CORE_ARM_CM3);
if (BRCMF_MAX_CORENUM != arm_core_idx) {
brcmf_sdio_chip_cm3_enterdl(sdiodev, ci);
return;
}
brcmf_sdio_chip_cr4_enterdl(sdiodev, ci);
}
bool brcmf_sdio_chip_exit_download(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, char *nvram_dat,
uint nvram_sz)
{
return brcmf_sdio_chip_cm3_exitdl(sdiodev, ci, nvram_dat, nvram_sz);
u8 arm_core_idx;
arm_core_idx = brcmf_sdio_chip_getinfidx(ci, BCMA_CORE_ARM_CM3);
if (BRCMF_MAX_CORENUM != arm_core_idx)
return brcmf_sdio_chip_cm3_exitdl(sdiodev, ci, nvram_dat,
nvram_sz);
return brcmf_sdio_chip_cr4_exitdl(sdiodev, ci, nvram_dat, nvram_sz);
}

6
drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.h
View File

@ -73,15 +73,17 @@ struct chip_info {
u32 pmurev;
u32 pmucaps;
u32 ramsize;
u32 rambase;
u32 rst_vec; /* reset vertor for ARM CR4 core */
bool (*iscoreup)(struct brcmf_sdio_dev *sdiodev, struct chip_info *ci,
u16 coreid);
u32 (*corerev)(struct brcmf_sdio_dev *sdiodev, struct chip_info *ci,
u16 coreid);
void (*coredisable)(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u16 coreid);
struct chip_info *ci, u16 coreid, u32 core_bits);
void (*resetcore)(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u16 coreid);
struct chip_info *ci, u16 coreid, u32 core_bits);
};
struct sbconfig {

1
include/linux/bcma/bcma.h
View File

@ -134,6 +134,7 @@ struct bcma_host_ops {
#define BCMA_CORE_I2S 0x834
#define BCMA_CORE_SDR_DDR1_MEM_CTL 0x835 /* SDR/DDR1 memory controller core */
#define BCMA_CORE_SHIM 0x837 /* SHIM component in ubus/6362 */
#define BCMA_CORE_ARM_CR4 0x83e
#define BCMA_CORE_DEFAULT 0xFFF
#define BCMA_MAX_NR_CORES 16

1
include/linux/bcma/bcma_regs.h
View File

@ -37,6 +37,7 @@
#define BCMA_IOST_BIST_DONE 0x8000
#define BCMA_RESET_CTL 0x0800
#define BCMA_RESET_CTL_RESET 0x0001
#define BCMA_RESET_ST 0x0804
/* BCMA PCI config space registers. */
#define BCMA_PCI_PMCSR 0x44