Return-path: Received: from mail-gw1-out.broadcom.com ([216.31.210.62]:56626 "EHLO mail-gw1-out.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751111AbcDKJpY (ORCPT ); Mon, 11 Apr 2016 05:45:24 -0400 From: Arend van Spriel To: Kalle Valo Cc: linux-wireless , Hante Meuleman , Arend van Spriel Subject: [PATCH 3/8] brcmfmac: insert default boardrev in nvram data if missing Date: Mon, 11 Apr 2016 11:35:23 +0200 Message-Id: <1460367328-12082-4-git-send-email-arend@broadcom.com> (sfid-20160411_114528_329543_B3E23677) In-Reply-To: <1460367328-12082-1-git-send-email-arend@broadcom.com> References: <1460367328-12082-1-git-send-email-arend@broadcom.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Hante Meuleman 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 Reviewed-by: Arend Van Spriel Reviewed-by: Franky (Zhenhui) Lin Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel --- .../broadcom/brcm80211/brcmfmac/firmware.c | 30 ++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c index 7269056..c7c1e99 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c @@ -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 @@ fail: 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 "=\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) { -- 1.9.1