From patchwork Tue Feb 14 08:00:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 653940 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 CBAEFC64ED8 for ; Tue, 14 Feb 2023 08:02:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231799AbjBNICU (ORCPT ); Tue, 14 Feb 2023 03:02:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229575AbjBNIBp (ORCPT ); Tue, 14 Feb 2023 03:01:45 -0500 Received: from mail.marcansoft.com (marcansoft.com [212.63.210.85]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E0819273E; Tue, 14 Feb 2023 00:01:43 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: sendonly@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id B0F874267B; Tue, 14 Feb 2023 08:01:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=marcan.st; s=default; t=1676361702; bh=p6L/0L78DJAiXa0tWZGy/+KT5i43QkswVQmSdbLw7W0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fMeRXy3c57zRowzLprZV33IK3KYYODRGXmi7VeH2aOtOdskSfAIrcAhBfKcrBEjI+ VvJg09GZv4wRPEn9RfU01DWTjXV2j69eYKXyUBHpVTaGRP6IF3fE49Wr8X4+1KNiGK IbiXAZe8nZhE4pjRfSFLxhMMQiHYyYQPQ5GWE1HbiCGl0xb6dA5KO5Dy7aMICJJ+Zh jCOCg1UKZdhjmVZ/pMhyNdZeDhypDDUES4IommwlmAGy3iSYdF+krAecGhULMD4kiL 4PnOxQJb6tK4WYZ5HRQi83u+skkYXNiMKByJeBmctDV8FrAAJOwn5OLD+wQc1fvNE4 7H2QqyFnXGT0Q== From: Hector Martin To: Arend van Spriel , Franky Lin , Hante Meuleman , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Sven Peter , Alyssa Rosenzweig , Linus Walleij , asahi@lists.linux.dev, linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Hector Martin Subject: [PATCH 1/2] brcmfmac: acpi: Add support for fetching Apple ACPI properties Date: Tue, 14 Feb 2023 17:00:33 +0900 Message-Id: <20230214080034.3828-2-marcan@marcan.st> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230214080034.3828-1-marcan@marcan.st> References: <20230214080034.3828-1-marcan@marcan.st> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On DT platforms, the module-instance and antenna-sku-info properties are passed in the DT. On ACPI platforms, module-instance is passed via the analogous Apple device property mechanism, while the antenna SKU info is instead obtained via an ACPI method that grabs it from non-volatile storage. Add support for this, to allow proper firmware selection on Apple platforms. Signed-off-by: Hector Martin Acked-by: Linus Walleij --- .../broadcom/brcm80211/brcmfmac/Makefile | 2 + .../broadcom/brcm80211/brcmfmac/acpi.c | 51 +++++++++++++++++++ .../broadcom/brcm80211/brcmfmac/common.c | 1 + .../broadcom/brcm80211/brcmfmac/common.h | 9 ++++ 4 files changed, 63 insertions(+) create mode 100644 drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile index 0e996cf24f88..dc6d27a36faa 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile @@ -48,6 +48,8 @@ brcmfmac-$(CONFIG_OF) += \ of.o brcmfmac-$(CONFIG_DMI) += \ dmi.o +brcmfmac-$(CONFIG_ACPI) += \ + acpi.o ifeq ($(CONFIG_BRCMFMAC),m) obj-m += wcc/ diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c new file mode 100644 index 000000000000..c4a54861bfb4 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright The Asahi Linux Contributors + */ + +#include +#include "debug.h" +#include "core.h" +#include "common.h" + +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) +{ + acpi_status status; + const union acpi_object *o; + struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; + struct acpi_device *adev = ACPI_COMPANION(dev); + + if (!adev) + return; + + if (!ACPI_FAILURE(acpi_dev_get_property(adev, "module-instance", + ACPI_TYPE_STRING, &o))) { + brcmf_dbg(INFO, "ACPI module-instance=%s\n", o->string.pointer); + settings->board_type = devm_kasprintf(dev, GFP_KERNEL, + "apple,%s", + o->string.pointer); + } else { + brcmf_dbg(INFO, "No ACPI module-instance\n"); + return; + } + + status = acpi_evaluate_object(adev->handle, "RWCV", NULL, &buf); + o = buf.pointer; + if (!ACPI_FAILURE(status) && o && o->type == ACPI_TYPE_BUFFER && + o->buffer.length >= 2) { + char *antenna_sku = devm_kzalloc(dev, 3, GFP_KERNEL); + + if (antenna_sku) { + memcpy(antenna_sku, o->buffer.pointer, 2); + brcmf_dbg(INFO, "ACPI RWCV data=%*phN antenna-sku=%s\n", + (int)o->buffer.length, o->buffer.pointer, + antenna_sku); + settings->antenna_sku = antenna_sku; + } + + kfree(buf.pointer); + } else { + brcmf_dbg(INFO, "No ACPI antenna-sku\n"); + } +} diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index 4a309e5a5707..b977e50137bb 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -484,6 +484,7 @@ struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, /* No platform data for this device, try OF and DMI data */ brcmf_dmi_probe(settings, chip, chiprev); brcmf_of_probe(dev, bus_type, settings); + brcmf_acpi_probe(dev, bus_type, settings); } return settings; } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h index aa25abffcc7d..7167fd4f8c63 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h @@ -77,6 +77,15 @@ static inline void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev) {} #endif +#ifdef CONFIG_ACPI +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings); +#else +static inline void brcmf_acpi_probe(struct device *dev, + enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) {} +#endif + u8 brcmf_map_prio_to_prec(void *cfg, u8 prio); u8 brcmf_map_prio_to_aci(void *cfg, u8 prio); From patchwork Tue Feb 14 08:00:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 653683 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 2E000C64EC7 for ; Tue, 14 Feb 2023 08:02:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231761AbjBNICR (ORCPT ); Tue, 14 Feb 2023 03:02:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229623AbjBNIBu (ORCPT ); Tue, 14 Feb 2023 03:01:50 -0500 Received: from mail.marcansoft.com (marcansoft.com [212.63.210.85]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 215FF3584; Tue, 14 Feb 2023 00:01:49 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: sendonly@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 021AA4267F; Tue, 14 Feb 2023 08:01:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=marcan.st; s=default; t=1676361707; bh=aKnwARwXd9Y7kXM6JWwg7MoyGvJiNp/PyCpUc6DQNog=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=IxuZaZcPAXWh+4LM80B8l4CJl7M594WmlV+Yf1P036e5gCPRAwzuG+GoZP+sD/Ilh tiYISzhqdBmtnNfglg6yXlrG1c6i6cFvZ8P54SkPw5So2c8cE5LZyzG3DgB5ztgGg6 T0+SUuDTUlpKKRWwjSd6XTE6tG8KQvHVLyLmSvvHtdQk32p4+1dGOQwQUw31g0mL2G ihHTQScAJ8viYuAsAtJsX9ktqisXH6j5YVpg3KldeFkkVrhMsfN0NhkiQdPBozXDoa ivN2WPjB8inCg+PTv8OGZGlRndYvWTM79e+/3Z0yJ4qxKnAljdTLLtTj6XBM2B3wTv +kO9YiQlhX7mw== From: Hector Martin To: Arend van Spriel , Franky Lin , Hante Meuleman , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Sven Peter , Alyssa Rosenzweig , Linus Walleij , asahi@lists.linux.dev, linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Hector Martin Subject: [PATCH 2/2] brcmfmac: pcie: Provide a buffer of random bytes to the device Date: Tue, 14 Feb 2023 17:00:34 +0900 Message-Id: <20230214080034.3828-3-marcan@marcan.st> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230214080034.3828-1-marcan@marcan.st> References: <20230214080034.3828-1-marcan@marcan.st> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Newer Apple firmwares on chipsets without a hardware RNG require the host to provide a buffer of 256 random bytes to the device on initialization. This buffer is present immediately before NVRAM, suffixed by a footer containing a magic number and the buffer length. This won't affect chips/firmwares that do not use this feature, so do it unconditionally for all Apple platforms (those with an Apple OTP). Reviewed-by: Linus Walleij Signed-off-by: Hector Martin --- .../broadcom/brcm80211/brcmfmac/pcie.c | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c index f320b6ce8bff..a7b88ab609c2 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -1653,6 +1654,13 @@ brcmf_pcie_init_share_ram_info(struct brcmf_pciedev_info *devinfo, return 0; } +struct brcmf_random_seed_footer { + __le32 length; + __le32 magic; +}; + +#define BRCMF_RANDOM_SEED_MAGIC 0xfeedc0de +#define BRCMF_RANDOM_SEED_LENGTH 0x100 static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo, const struct firmware *fw, void *nvram, @@ -1689,6 +1697,30 @@ static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo, nvram_len; memcpy_toio(devinfo->tcm + address, nvram, nvram_len); brcmf_fw_nvram_free(nvram); + + if (devinfo->otp.valid) { + size_t rand_len = BRCMF_RANDOM_SEED_LENGTH; + struct brcmf_random_seed_footer footer = { + .length = cpu_to_le32(rand_len), + .magic = cpu_to_le32(BRCMF_RANDOM_SEED_MAGIC), + }; + void *randbuf; + + /* Some Apple chips/firmwares expect a buffer of random + * data to be present before NVRAM + */ + brcmf_dbg(PCIE, "Download random seed\n"); + + address -= sizeof(footer); + memcpy_toio(devinfo->tcm + address, &footer, + sizeof(footer)); + + address -= rand_len; + randbuf = kzalloc(rand_len, GFP_KERNEL); + get_random_bytes(randbuf, rand_len); + memcpy_toio(devinfo->tcm + address, randbuf, rand_len); + kfree(randbuf); + } } else { brcmf_dbg(PCIE, "No matching NVRAM file found %s\n", devinfo->nvram_name);