From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8827CECAAD5 for ; Mon, 12 Sep 2022 09:57:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Date:Message-Id:MIME-Version:Subject:Cc :To:From:References:In-Reply-To:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=I9l1ccj7qctn3w2gELcV+OoN4+VPnQUPwRi1b4CdNsk=; b=SX9vZPfaKzg7bv ybNQ2FKDFNgRVMpM2uvzDuIPSE+lDdhYPCl42SFIU+dUTUe/EICZ/m19qcjGQYWr8ESOyOhbVzvu1 D1s7I4cQolnQ0A2BmAhCj+nVMpt+61N4ZnobA3fgkaZrxarnAD5+5lu0K5naM3//4SnK3ROL0VjD/ RTYGkfrd3EYeac9fLTQ4DICaYDyp30uXNypg/sCFH6/2nRJEOrkcdy7Xnc8n0nYa3oQqsoCKp1gxd DN2Q/B3iSXMEkTolL2tiG+TjfWz2y9oTR0oTrYm2vWg7nEh5wxiydreHl11IBd5JUA9TyeFjd3eiR End/uYeL6GwkXoH9669w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oXgB4-008TJR-Qq; Mon, 12 Sep 2022 09:56:32 +0000 Received: from pandora.armlinux.org.uk ([2001:4d48:ad52:32c8:5054:ff:fe00:142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oXg87-008RKF-EF for linux-arm-kernel@lists.infradead.org; Mon, 12 Sep 2022 09:53:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Date:Sender:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References: In-Reply-To:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Nv07mv2MpxUPTETUKi/5pGHsGikcrJct5kZhcHfYHKE=; b=yVG1f1tEceLNv22o8Pi+npFBJM GtDbWKdLQ/f+/ITFCpvzI4pvKNjYv0+uyo3vLaCFuLlvWXBv5A2YpHMpXnNkSj8ejQVmwQhUapev+ n6w/DBX2XjTYXtjiqPQtWZ60pJqo2FXNqz+6BdJ0g3uiX10qbwfiQOx5Be1m9pt44INMO5D1QOPnd +KGPJi5J/VfJ99XdxzBrnIChrtxazTFVWwXe5uDfDpUTf4EXjXLEXlOLazAPxXTVhh09dOD4e6jKk Tpz2WkgS9vBKiaLumbIbqfgrxGyxasCcLfvmQWCtPc8nsAN5Wfr/jbYyWUUeAjbC16iESloiVhG1y CJJxXHeg==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:51554 helo=rmk-PC.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1oXg7y-0001Tp-2e; Mon, 12 Sep 2022 10:53:18 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1oXg7x-0064vN-Cm; Mon, 12 Sep 2022 10:53:17 +0100 In-Reply-To: References: From: Russell King (Oracle) To: Arend van Spriel , Franky Lin , Hante Meuleman Cc: Alyssa Rosenzweig , asahi@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com, "David S. Miller" , devicetree@vger.kernel.org, Eric Dumazet , Hector Martin , Jakub Kicinski , Kalle Valo , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Paolo Abeni , "Rafa__ Mi__ecki" , Rob Herring , SHA-cyfmac-dev-list@infineon.com, Sven Peter Subject: [PATCH wireless-next v2 08/12] brcmfmac: firmware: Allow platform to override macaddr MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Mon, 12 Sep 2022 10:53:17 +0100 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220912_025327_523149_960C20AC X-CRM114-Status: GOOD ( 21.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Hector Martin On Device Tree platforms, it is customary to be able to set the MAC address via the Device Tree, as it is often stored in system firmware. This is particularly relevant for Apple ARM64 platforms, where this information comes from system configuration and passed through by the bootloader into the DT. Implement support for this by fetching the platform MAC address and adding or replacing the macaddr= property in nvram. This becomes the dongle's default MAC address. On platforms with an SROM MAC address, this overrides it. On platforms without one, such as Apple ARM64 devices, this is required for the firmware to boot (it will fail if it does not have a valid MAC at all). Reviewed-by: Linus Walleij Signed-off-by: Hector Martin Signed-off-by: Russell King (Oracle) --- .../broadcom/brcm80211/brcmfmac/firmware.c | 31 +++++++++++++++++-- 1 file changed, 29 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c index 371c086d1f48..c109e20fc5c6 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c @@ -21,6 +21,8 @@ #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" +#define BRCMF_FW_MACADDR_FMT "macaddr=%pM" +#define BRCMF_FW_MACADDR_LEN (7 + ETH_ALEN * 3) enum nvram_parser_state { IDLE, @@ -57,6 +59,7 @@ struct nvram_parser { bool multi_dev_v1; bool multi_dev_v2; bool boardrev_found; + bool strip_mac; }; /* @@ -121,6 +124,10 @@ static enum nvram_parser_state brcmf_nvram_handle_key(struct nvram_parser *nvp) nvp->multi_dev_v2 = true; if (strncmp(&nvp->data[nvp->entry], "boardrev", 8) == 0) nvp->boardrev_found = true; + /* strip macaddr if platform MAC overrides */ + if (nvp->strip_mac && + strncmp(&nvp->data[nvp->entry], "macaddr", 7) == 0) + st = COMMENT; } 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); @@ -209,6 +216,7 @@ static int brcmf_init_nvram_parser(struct nvram_parser *nvp, size = data_len; /* Add space for properties we may add */ size += strlen(BRCMF_FW_DEFAULT_BOARDREV) + 1; + size += BRCMF_FW_MACADDR_LEN + 1; /* Alloc for extra 0 byte + roundup by 4 + length field */ size += 1 + 3 + sizeof(u32); nvp->nvram = kzalloc(size, GFP_KERNEL); @@ -368,22 +376,37 @@ static void brcmf_fw_add_defaults(struct nvram_parser *nvp) nvp->nvram_len++; } +static void brcmf_fw_add_macaddr(struct nvram_parser *nvp, u8 *mac) +{ + int len; + + len = scnprintf(&nvp->nvram[nvp->nvram_len], BRCMF_FW_MACADDR_LEN + 1, + BRCMF_FW_MACADDR_FMT, mac); + WARN_ON(len != BRCMF_FW_MACADDR_LEN); + nvp->nvram_len += len + 1; +} + /* 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. * End of buffer is completed with token identifying length of buffer. */ static void *brcmf_fw_nvram_strip(const u8 *data, size_t data_len, - u32 *new_length, u16 domain_nr, u16 bus_nr) + u32 *new_length, u16 domain_nr, u16 bus_nr, + struct device *dev) { struct nvram_parser nvp; u32 pad; u32 token; __le32 token_le; + u8 mac[ETH_ALEN]; if (brcmf_init_nvram_parser(&nvp, data, data_len) < 0) return NULL; + if (eth_platform_get_mac_address(dev, mac) == 0) + nvp.strip_mac = true; + while (nvp.pos < data_len) { nvp.state = nv_parser_states[nvp.state](&nvp); if (nvp.state == END) @@ -404,6 +427,9 @@ static void *brcmf_fw_nvram_strip(const u8 *data, size_t data_len, brcmf_fw_add_defaults(&nvp); + if (nvp.strip_mac) + brcmf_fw_add_macaddr(&nvp, mac); + pad = nvp.nvram_len; *new_length = roundup(nvp.nvram_len + 1, 4); while (pad != *new_length) { @@ -538,7 +564,8 @@ static int brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx) if (data) nvram = brcmf_fw_nvram_strip(data, data_len, &nvram_length, fwctx->req->domain_nr, - fwctx->req->bus_nr); + fwctx->req->bus_nr, + fwctx->dev); if (free_bcm47xx_nvram) bcm47xx_nvram_release_contents(data); -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel