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brcmfmac: insert default boardrev in nvram data if missing

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Some nvram files/stores come without the boardrev information,
but firmware requires this to be set. When not found in nvram then
add a default boardrev string to the nvram data.

Reported-by: Rafal Milecki <zajec5@gmail.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <franky.lin@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Signed-off-by: Hante Meuleman <hante.meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Hante Meuleman 2016-04-11 11:35:23 +02:00 committed by Kalle Valo
parent 28b285a612
commit 46f2b38a91
1 changed files with 28 additions and 2 deletions
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30
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
View File

@ -29,6 +29,7 @@
#define BRCMF_FW_MAX_NVRAM_SIZE 64000
#define BRCMF_FW_NVRAM_DEVPATH_LEN 19 /* devpath0=pcie/1/4/ */
#define BRCMF_FW_NVRAM_PCIEDEV_LEN 10 /* pcie/1/4/ + \0 */
#define BRCMF_FW_DEFAULT_BOARDREV "boardrev=0xff"
enum nvram_parser_state {
IDLE,
@ -51,6 +52,7 @@ enum nvram_parser_state {
* @entry: start position of key,value entry.
* @multi_dev_v1: detect pcie multi device v1 (compressed).
* @multi_dev_v2: detect pcie multi device v2.
* @boardrev_found: nvram contains boardrev information.
*/
struct nvram_parser {
enum nvram_parser_state state;
@ -63,6 +65,7 @@ struct nvram_parser {
u32 entry;
bool multi_dev_v1;
bool multi_dev_v2;
bool boardrev_found;
};
/**
@ -125,6 +128,8 @@ static enum nvram_parser_state brcmf_nvram_handle_key(struct nvram_parser *nvp)
nvp->multi_dev_v1 = true;
if (strncmp(&nvp->data[nvp->entry], "pcie/", 5) == 0)
nvp->multi_dev_v2 = true;
if (strncmp(&nvp->data[nvp->entry], "boardrev", 8) == 0)
nvp->boardrev_found = true;
} else if (!is_nvram_char(c) || c == ' ') {
brcmf_dbg(INFO, "warning: ln=%d:col=%d: '=' expected, skip invalid key entry\n",
nvp->line, nvp->column);
@ -284,6 +289,8 @@ static void brcmf_fw_strip_multi_v1(struct nvram_parser *nvp, u16 domain_nr,
while (i < nvp->nvram_len) {
if ((nvp->nvram[i] - '0' == id) && (nvp->nvram[i + 1] == ':')) {
i += 2;
if (strncmp(&nvp->nvram[i], "boardrev", 8) == 0)
nvp->boardrev_found = true;
while (nvp->nvram[i] != 0) {
nvram[j] = nvp->nvram[i];
i++;
@ -335,6 +342,8 @@ static void brcmf_fw_strip_multi_v2(struct nvram_parser *nvp, u16 domain_nr,
while (i < nvp->nvram_len - len) {
if (strncmp(&nvp->nvram[i], prefix, len) == 0) {
i += len;
if (strncmp(&nvp->nvram[i], "boardrev", 8) == 0)
nvp->boardrev_found = true;
while (nvp->nvram[i] != 0) {
nvram[j] = nvp->nvram[i];
i++;
@ -356,6 +365,18 @@ static void brcmf_fw_strip_multi_v2(struct nvram_parser *nvp, u16 domain_nr,
nvp->nvram_len = 0;
}
static void brcmf_fw_add_defaults(struct nvram_parser *nvp)
{
if (nvp->boardrev_found)
return;
memcpy(&nvp->nvram[nvp->nvram_len], &BRCMF_FW_DEFAULT_BOARDREV,
strlen(BRCMF_FW_DEFAULT_BOARDREV));
nvp->nvram_len += strlen(BRCMF_FW_DEFAULT_BOARDREV);
nvp->nvram[nvp->nvram_len] = '\0';
nvp->nvram_len++;
}
/* brcmf_nvram_strip :Takes a buffer of "<var>=<value>\n" lines read from a fil
* and ending in a NUL. Removes carriage returns, empty lines, comment lines,
* and converts newlines to NULs. Shortens buffer as needed and pads with NULs.
@ -377,16 +398,21 @@ static void *brcmf_fw_nvram_strip(const u8 *data, size_t data_len,
if (nvp.state == END)
break;
}
if (nvp.multi_dev_v1)
if (nvp.multi_dev_v1) {
nvp.boardrev_found = false;
brcmf_fw_strip_multi_v1(&nvp, domain_nr, bus_nr);
else if (nvp.multi_dev_v2)
} else if (nvp.multi_dev_v2) {
nvp.boardrev_found = false;
brcmf_fw_strip_multi_v2(&nvp, domain_nr, bus_nr);
}
if (nvp.nvram_len == 0) {
kfree(nvp.nvram);
return NULL;
}
brcmf_fw_add_defaults(&nvp);
pad = nvp.nvram_len;
*new_length = roundup(nvp.nvram_len + 1, 4);
while (pad != *new_length) {