diff options
Diffstat (limited to 'package/kernel/mac80211/patches/344-brcmfmac-take-save-restore-memory-into-account-for-S.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/344-brcmfmac-take-save-restore-memory-into-account-for-S.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/344-brcmfmac-take-save-restore-memory-into-account-for-S.patch b/package/kernel/mac80211/patches/344-brcmfmac-take-save-restore-memory-into-account-for-S.patch new file mode 100644 index 0000000000..69618a7aa7 --- /dev/null +++ b/package/kernel/mac80211/patches/344-brcmfmac-take-save-restore-memory-into-account-for-S.patch @@ -0,0 +1,96 @@ +From: Arend van Spriel <arend@broadcom.com> +Date: Wed, 11 Mar 2015 16:11:32 +0100 +Subject: [PATCH] brcmfmac: take save&restore memory into account for SDIO + shared info + +The firmware provides pointer to SDIO shared information at end of +RAM during firmware initialization. End of RAM is obviously determined +by the actual ram size, but part of that may be used for save&restore +memory. In that case another location in RAM will hold the pointer. + +Reviewed-by: Hante Meuleman <meuleman@broadcom.com> +Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> +Signed-off-by: Arend van Spriel <arend@broadcom.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + +--- a/drivers/net/wireless/brcm80211/brcmfmac/sdio.c ++++ b/drivers/net/wireless/brcm80211/brcmfmac/sdio.c +@@ -1067,44 +1067,47 @@ static inline bool brcmf_sdio_valid_shar + static int brcmf_sdio_readshared(struct brcmf_sdio *bus, + struct sdpcm_shared *sh) + { +- u32 addr; ++ u32 addr = 0; + int rv; + u32 shaddr = 0; + struct sdpcm_shared_le sh_le; + __le32 addr_le; + +- shaddr = bus->ci->rambase + bus->ci->ramsize - 4; ++ sdio_claim_host(bus->sdiodev->func[1]); ++ brcmf_sdio_bus_sleep(bus, false, false); + + /* + * Read last word in socram to determine + * address of sdpcm_shared structure + */ +- sdio_claim_host(bus->sdiodev->func[1]); +- brcmf_sdio_bus_sleep(bus, false, false); +- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4); +- sdio_release_host(bus->sdiodev->func[1]); ++ shaddr = bus->ci->rambase + bus->ci->ramsize - 4; ++ if (!bus->ci->rambase && brcmf_chip_sr_capable(bus->ci)) ++ shaddr -= bus->ci->srsize; ++ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, ++ (u8 *)&addr_le, 4); + if (rv < 0) +- return rv; +- +- addr = le32_to_cpu(addr_le); +- +- brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr); ++ goto fail; + + /* + * Check if addr is valid. + * NVRAM length at the end of memory should have been overwritten. + */ ++ addr = le32_to_cpu(addr_le); + if (!brcmf_sdio_valid_shared_address(addr)) { +- brcmf_err("invalid sdpcm_shared address 0x%08X\n", +- addr); +- return -EINVAL; ++ brcmf_err("invalid sdpcm_shared address 0x%08X\n", addr); ++ rv = -EINVAL; ++ goto fail; + } + ++ brcmf_dbg(INFO, "sdpcm_shared address 0x%08X\n", addr); ++ + /* Read hndrte_shared structure */ + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le, + sizeof(struct sdpcm_shared_le)); + if (rv < 0) +- return rv; ++ goto fail; ++ ++ sdio_release_host(bus->sdiodev->func[1]); + + /* Endianness */ + sh->flags = le32_to_cpu(sh_le.flags); +@@ -1121,8 +1124,13 @@ static int brcmf_sdio_readshared(struct + sh->flags & SDPCM_SHARED_VERSION_MASK); + return -EPROTO; + } +- + return 0; ++ ++fail: ++ brcmf_err("unable to obtain sdpcm_shared info: rv=%d (addr=0x%x)\n", ++ rv, addr); ++ sdio_release_host(bus->sdiodev->func[1]); ++ return rv; + } + + static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus) |