From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Subject: [PATCH] brcmfmac: get RAM info right before downloading PCIe firmware MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It's important as brcmf_chip_get_raminfo() also makes sure that memory is properly setup. Without it the firmware could report invalid RAM address like 0x04000001. During a normal brcmfmac lifetime brcmf_chip_get_raminfo() is called on probe by the brcmf_chip_recognition(). This change allows implementing further improvements like handling errors by resetting a device with the brcmf_pcie_reset_device() and redownloading a firmware afterwards. Signed-off-by: Rafał Miłecki --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c | 6 ++++-- drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h | 1 + drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 6 ++++++ 3 files changed, 11 insertions(+), 2 deletions(-) --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c @@ -700,8 +700,10 @@ static u32 brcmf_chip_tcm_rambase(struct return 0; } -static int brcmf_chip_get_raminfo(struct brcmf_chip_priv *ci) +int brcmf_chip_get_raminfo(struct brcmf_chip *pub) { + struct brcmf_chip_priv *ci = container_of(pub, struct brcmf_chip_priv, + pub); struct brcmf_core_priv *mem_core; struct brcmf_core *mem; @@ -981,7 +983,7 @@ static int brcmf_chip_recognition(struct brcmf_chip_set_passive(&ci->pub); } - return brcmf_chip_get_raminfo(ci); + return brcmf_chip_get_raminfo(&ci->pub); } static void brcmf_chip_disable_arm(struct brcmf_chip_priv *chip, u16 id) --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h @@ -80,6 +80,7 @@ struct brcmf_buscore_ops { void (*activate)(void *ctx, struct brcmf_chip *chip, u32 rstvec); }; +int brcmf_chip_get_raminfo(struct brcmf_chip *pub); struct brcmf_chip *brcmf_chip_attach(void *ctx, const struct brcmf_buscore_ops *ops); void brcmf_chip_detach(struct brcmf_chip *chip); --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c @@ -1762,6 +1762,12 @@ static void brcmf_pcie_setup(struct devi brcmf_pcie_attach(devinfo); + ret = brcmf_chip_get_raminfo(devinfo->ci); + if (ret) { + brcmf_err(bus, "Failed to get RAM info\n"); + goto fail; + } + /* Some of the firmwares have the size of the memory of the device * defined inside the firmware. This is because part of the memory in * the device is shared and the devision is determined by FW. Parse