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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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 <rafal@milecki.pl>
---
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
@@ -1780,6 +1780,12 @@ static void brcmf_pcie_setup(struct devi
nvram_len = fwreq->items[BRCMF_PCIE_FW_NVRAM].nv_data.len;
kfree(fwreq);
+ 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
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