From patchwork Mon Sep 12 09:53:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Russell King \(Oracle\)" X-Patchwork-Id: 605521 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6750ECAAA1 for ; Mon, 12 Sep 2022 09:53:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229966AbiILJxq (ORCPT ); Mon, 12 Sep 2022 05:53:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230056AbiILJx1 (ORCPT ); Mon, 12 Sep 2022 05:53:27 -0400 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7626B2229E; Mon, 12 Sep 2022 02:53:15 -0700 (PDT) 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=kdNJYTyopvCDamLY1OUzmD7eDgWbe3h0F6JuVwS1Dx0=; b=PPxRrEh6QTrfpg+c56TrpTSWry CmBLW26w32ha1kWxq2/lSMHgfPDwmhNaeFZD5cQjx0EE2/9tOo59aQh2x67mt0cNSjKyg9Ap8XGUH oo2ea94348SbUB/3CyVEoGXVZnLtOtDGqRiWkLB/sFT+xBkLZ3pZT1Je9h0ED5c3cvVBF80Ab0usK hZeMiLbj+HoBc2T985X4Zfh5w+UmQnByYhFUExo58X/iEFp0H4gw32lgmd7UUJFznzdjIarb6YmHf OUB9gQbQfxcY6oGX/4CEZ728f8Z1MGxHHeKmT+QeGCrX6LCPmmBZ3pC9engAqvWBqNuF2kwBf5ARz R0bgvAIw==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:51544 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 1oXg7s-0001TS-Uv; Mon, 12 Sep 2022 10:53:12 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1oXg7s-0064vH-81; Mon, 12 Sep 2022 10:53:12 +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 07/12] brcmfmac: pcie: Perform firmware selection for Apple platforms MIME-Version: 1.0 Content-Disposition: inline Message-Id: Sender: Russell King Date: Mon, 12 Sep 2022 10:53:12 +0100 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Hector Martin On Apple platforms, firmware selection uses the following elements: Property Example Source ============== ======= ======================== * Chip name 4378 Device ID * Chip revision B1 OTP * Platform shikoku DT (ARM64) or ACPI (x86) * Module type RASP OTP * Module vendor m OTP * Module version 6.11 OTP * Antenna SKU X3 DT (ARM64) or ACPI (x86) In macOS, these firmwares are stored using filenames in this format under /usr/share/firmware/wifi: C-4378__s-B1/P-shikoku-X3_M-RASP_V-m__m-6.11.txt To prepare firmwares for Linux, we rename these to a scheme following the existing brcmfmac convention: brcmfmac-pcie.apple,--\ --.txt The NVRAM uses all the components, while the firmware and CLM blob only use the chip/revision/platform/antenna_sku: brcmfmac-pcie.apple,-.bin e.g. brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP-m-6.11-X3.txt brcm/brcmfmac4378b1-pcie.apple,shikoku-X3.bin In addition, since there are over 1000 files in total, many of which are symlinks or outright duplicates, we deduplicate and prune the firmware tree to reduce firmware filenames to fewer dimensions. For example, the shikoku platform (MacBook Air M1 2020) simplifies to just 4 files: brcm/brcmfmac4378b1-pcie.apple,shikoku.clm_blob brcm/brcmfmac4378b1-pcie.apple,shikoku.bin brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP-m.txt brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP-u.txt This reduces the total file count to around 170, of which 75 are symlinks and 95 are regular files: 7 firmware blobs, 27 CLM blobs, and 61 NVRAM config files. We also slightly process NVRAM files to correct some formatting issues. To handle this, the driver must try the following path formats when looking for firmware files: brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP-m-6.11-X3.txt brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP-m-6.11.txt brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP-m.txt brcm/brcmfmac4378b1-pcie.apple,shikoku-RASP.txt brcm/brcmfmac4378b1-pcie.apple,shikoku-X3.txt * brcm/brcmfmac4378b1-pcie.apple,shikoku.txt * Not relevant for NVRAM, only for firmware/CLM. The chip revision nominally comes from OTP on Apple platforms, but it can be mapped to the PCI revision number, so we ignore the OTP revision and continue to use the existing PCI revision mechanism to identify chip revisions, as the driver already does for other chips. Unfortunately, the mapping is not consistent between different chip types, so this has to be determined experimentally. Reviewed-by: Linus Walleij Signed-off-by: Hector Martin Signed-off-by: Russell King (Oracle) Reviewed-by: Alvin Šipraga --- .../broadcom/brcm80211/brcmfmac/pcie.c | 41 ++++++++++++++++++- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c index 76ca835378bb..3fb590a6e03b 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c @@ -2068,8 +2068,45 @@ brcmf_pcie_prepare_fw_request(struct brcmf_pciedev_info *devinfo) fwreq->domain_nr = pci_domain_nr(devinfo->pdev->bus) + 1; fwreq->bus_nr = devinfo->pdev->bus->number; - brcmf_dbg(PCIE, "Board: %s\n", devinfo->settings->board_type); - fwreq->board_types[0] = devinfo->settings->board_type; + /* Apple platforms with fancy firmware/NVRAM selection */ + if (devinfo->settings->board_type && + devinfo->settings->antenna_sku && + devinfo->otp.valid) { + const struct brcmf_otp_params *otp = &devinfo->otp; + struct device *dev = &devinfo->pdev->dev; + const char **bt = fwreq->board_types; + + brcmf_dbg(PCIE, "Apple board: %s\n", + devinfo->settings->board_type); + + /* Example: apple,shikoku-RASP-m-6.11-X3 */ + bt[0] = devm_kasprintf(dev, GFP_KERNEL, "%s-%s-%s-%s-%s", + devinfo->settings->board_type, + otp->module, otp->vendor, otp->version, + devinfo->settings->antenna_sku); + bt[1] = devm_kasprintf(dev, GFP_KERNEL, "%s-%s-%s-%s", + devinfo->settings->board_type, + otp->module, otp->vendor, otp->version); + bt[2] = devm_kasprintf(dev, GFP_KERNEL, "%s-%s-%s", + devinfo->settings->board_type, + otp->module, otp->vendor); + bt[3] = devm_kasprintf(dev, GFP_KERNEL, "%s-%s", + devinfo->settings->board_type, + otp->module); + bt[4] = devm_kasprintf(dev, GFP_KERNEL, "%s-%s", + devinfo->settings->board_type, + devinfo->settings->antenna_sku); + bt[5] = devinfo->settings->board_type; + + if (!bt[0] || !bt[1] || !bt[2] || !bt[3] || !bt[4]) { + kfree(fwreq); + return NULL; + } + + } else { + brcmf_dbg(PCIE, "Board: %s\n", devinfo->settings->board_type); + fwreq->board_types[0] = devinfo->settings->board_type; + } return fwreq; }