mac80211: backport today's brcmfmac changes

This adds support for SR400ac NVRAM and fixes
/sys/class/ieee80211/*/macaddress

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45928 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/kernel/mac80211/patches/380-brcmfmac-support-NVRAMs-containing-pci-devpaths-inst.patch

+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 28 May 2015 14:19:21 +0200
+Subject: [PATCH] brcmfmac: support NVRAMs containing pci devpaths (instead of
+ pcie)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Recently Broadcom added support for NVRAMs with entries for multiple
+PCIe devices. One of the supported formats is based on prefixes defined
+like: devpath0=pcie/1/4/ and entries like 0:foo=bar 0:baz=qux etc.
+
+Unfortunately there are also a bit older devices using different way of
+defining prefixes, e.g. SmartRG SR400ac (2 x BCM43602) with entries:
+devpath0=pci/1/1/
+devpath1=pci/2/1
+Broadcom stated this old format will never be used/supported by brcmfmac
+but given the simplicity of this patch I'll insist on supporting it.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+
+--- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
+@@ -232,6 +232,8 @@ static void brcmf_fw_strip_multi_v1(stru
+ 				    u16 bus_nr)
+ {
+ 	/* Device path with a leading '=' key-value separator */
++	char pci_path[] = "=pci/?/?";
++	size_t pci_len;
+ 	char pcie_path[] = "=pcie/?/?";
+ 	size_t pcie_len;
+ 
+@@ -251,6 +253,9 @@ static void brcmf_fw_strip_multi_v1(stru
+ 	/* First search for the devpathX and see if it is the configuration
+ 	 * for domain_nr/bus_nr. Search complete nvp
+ 	 */
++	snprintf(pci_path, sizeof(pci_path), "=pci/%d/%d", domain_nr,
++		 bus_nr);
++	pci_len = strlen(pci_path);
+ 	snprintf(pcie_path, sizeof(pcie_path), "=pcie/%d/%d", domain_nr,
+ 		 bus_nr);
+ 	pcie_len = strlen(pcie_path);
+@@ -260,8 +265,9 @@ static void brcmf_fw_strip_multi_v1(stru
+ 		/* Format: devpathX=pcie/Y/Z/
+ 		 * Y = domain_nr, Z = bus_nr, X = virtual ID
+ 		 */
+-		if ((strncmp(&nvp->nvram[i], "devpath", 7) == 0) &&
+-		    (strncmp(&nvp->nvram[i + 8], pcie_path, pcie_len) == 0)) {
++		if (strncmp(&nvp->nvram[i], "devpath", 7) == 0 &&
++		    (!strncmp(&nvp->nvram[i + 8], pci_path, pci_len) ||
++		     !strncmp(&nvp->nvram[i + 8], pcie_path, pcie_len))) {
+ 			id = nvp->nvram[i + 7] - '0';
+ 			found = true;
+ 			break;

package/kernel/mac80211/patches/381-brcmfmac-set-wiphy-perm_addr-to-hardware-MAC-address.patch

+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sun, 31 May 2015 02:52:26 +0200
+Subject: [PATCH] brcmfmac: set wiphy perm_addr to hardware MAC address
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This allows e.g. user space to use /sys/class/ieee80211/*/macaddress
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+
+--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+@@ -6070,6 +6070,7 @@ struct brcmf_cfg80211_info *brcmf_cfg802
+ 		brcmf_err("Could not allocate wiphy device\n");
+ 		return NULL;
+ 	}
++	memcpy(wiphy->perm_addr, drvr->mac, ETH_ALEN);
+ 	set_wiphy_dev(wiphy, busdev);
+ 
+ 	cfg = wiphy_priv(wiphy);

package/kernel/mac80211/patches/382-brcmfmac-use-direct-data-pointer-in-NVRAM-parser-str.patch

+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 4 Jun 2015 22:11:07 +0200
+Subject: [PATCH] brcmfmac: use direct data pointer in NVRAM parser struct
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+As we plan to add support for platform NVRAM we should store direct
+data pointer without the extra struct firmware layer. This will allow
+us to support other sources with the only requirement being u8 buffer.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Acked-by: Arend van Spriel <arend@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+
+--- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
+@@ -43,7 +43,7 @@ enum nvram_parser_state {
+  * struct nvram_parser - internal info for parser.
+  *
+  * @state: current parser state.
+- * @fwnv: input buffer being parsed.
++ * @data: input buffer being parsed.
+  * @nvram: output buffer with parse result.
+  * @nvram_len: lenght of parse result.
+  * @line: current line.
+@@ -55,7 +55,7 @@ enum nvram_parser_state {
+  */
+ struct nvram_parser {
+ 	enum nvram_parser_state state;
+-	const struct firmware *fwnv;
++	const u8 *data;
+ 	u8 *nvram;
+ 	u32 nvram_len;
+ 	u32 line;
+@@ -91,7 +91,7 @@ static enum nvram_parser_state brcmf_nvr
+ {
+ 	char c;
+ 
+-	c = nvp->fwnv->data[nvp->pos];
++	c = nvp->data[nvp->pos];
+ 	if (c == '\n')
+ 		return COMMENT;
+ 	if (is_whitespace(c))
+@@ -115,16 +115,16 @@ static enum nvram_parser_state brcmf_nvr
+ 	enum nvram_parser_state st = nvp->state;
+ 	char c;
+ 
+-	c = nvp->fwnv->data[nvp->pos];
++	c = nvp->data[nvp->pos];
+ 	if (c == '=') {
+ 		/* ignore RAW1 by treating as comment */
+-		if (strncmp(&nvp->fwnv->data[nvp->entry], "RAW1", 4) == 0)
++		if (strncmp(&nvp->data[nvp->entry], "RAW1", 4) == 0)
+ 			st = COMMENT;
+ 		else
+ 			st = VALUE;
+-		if (strncmp(&nvp->fwnv->data[nvp->entry], "devpath", 7) == 0)
++		if (strncmp(&nvp->data[nvp->entry], "devpath", 7) == 0)
+ 			nvp->multi_dev_v1 = true;
+-		if (strncmp(&nvp->fwnv->data[nvp->entry], "pcie/", 5) == 0)
++		if (strncmp(&nvp->data[nvp->entry], "pcie/", 5) == 0)
+ 			nvp->multi_dev_v2 = true;
+ 	} else if (!is_nvram_char(c) || c == ' ') {
+ 		brcmf_dbg(INFO, "warning: ln=%d:col=%d: '=' expected, skip invalid key entry\n",
+@@ -145,11 +145,11 @@ brcmf_nvram_handle_value(struct nvram_pa
+ 	char *ekv;
+ 	u32 cplen;
+ 
+-	c = nvp->fwnv->data[nvp->pos];
++	c = nvp->data[nvp->pos];
+ 	if (!is_nvram_char(c)) {
+ 		/* key,value pair complete */
+-		ekv = (u8 *)&nvp->fwnv->data[nvp->pos];
+-		skv = (u8 *)&nvp->fwnv->data[nvp->entry];
++		ekv = (u8 *)&nvp->data[nvp->pos];
++		skv = (u8 *)&nvp->data[nvp->entry];
+ 		cplen = ekv - skv;
+ 		if (nvp->nvram_len + cplen + 1 >= BRCMF_FW_MAX_NVRAM_SIZE)
+ 			return END;
+@@ -170,7 +170,7 @@ brcmf_nvram_handle_comment(struct nvram_
+ {
+ 	char *eoc, *sol;
+ 
+-	sol = (char *)&nvp->fwnv->data[nvp->pos];
++	sol = (char *)&nvp->data[nvp->pos];
+ 	eoc = strchr(sol, '\n');
+ 	if (!eoc) {
+ 		eoc = strchr(sol, '\0');
+@@ -201,17 +201,17 @@ static enum nvram_parser_state
+ };
+ 
+ static int brcmf_init_nvram_parser(struct nvram_parser *nvp,
+-				   const struct firmware *nv)
++				   const u8 *data, size_t data_len)
+ {
+ 	size_t size;
+ 
+ 	memset(nvp, 0, sizeof(*nvp));
+-	nvp->fwnv = nv;
++	nvp->data = data;
+ 	/* Limit size to MAX_NVRAM_SIZE, some files contain lot of comment */
+-	if (nv->size > BRCMF_FW_MAX_NVRAM_SIZE)
++	if (data_len > BRCMF_FW_MAX_NVRAM_SIZE)
+ 		size = BRCMF_FW_MAX_NVRAM_SIZE;
+ 	else
+-		size = nv->size;
++		size = data_len;
+ 	/* Alloc for extra 0 byte + roundup by 4 + length field */
+ 	size += 1 + 3 + sizeof(u32);
+ 	nvp->nvram = kzalloc(size, GFP_KERNEL);
+@@ -362,18 +362,18 @@ fail:
+  * and converts newlines to NULs. Shortens buffer as needed and pads with NULs.
+  * End of buffer is completed with token identifying length of buffer.
+  */
+-static void *brcmf_fw_nvram_strip(const struct firmware *nv, u32 *new_length,
+-				  u16 domain_nr, u16 bus_nr)
++static void *brcmf_fw_nvram_strip(const u8 *data, size_t data_len,
++				  u32 *new_length, u16 domain_nr, u16 bus_nr)
+ {
+ 	struct nvram_parser nvp;
+ 	u32 pad;
+ 	u32 token;
+ 	__le32 token_le;
+ 
+-	if (brcmf_init_nvram_parser(&nvp, nv) < 0)
++	if (brcmf_init_nvram_parser(&nvp, data, data_len) < 0)
+ 		return NULL;
+ 
+-	while (nvp.pos < nv->size) {
++	while (nvp.pos < data_len) {
+ 		nvp.state = nv_parser_states[nvp.state](&nvp);
+ 		if (nvp.state == END)
+ 			break;
+@@ -432,7 +432,7 @@ static void brcmf_fw_request_nvram_done(
+ 		goto fail;
+ 
+ 	if (fw) {
+-		nvram = brcmf_fw_nvram_strip(fw, &nvram_length,
++		nvram = brcmf_fw_nvram_strip(fw->data, fw->size, &nvram_length,
+ 					     fwctx->domain_nr, fwctx->bus_nr);
+ 		release_firmware(fw);
+ 		if (!nvram && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))