From patchwork Tue May 24 22:52:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Wu X-Patchwork-Id: 9134537 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8A04A607D8 for ; Wed, 25 May 2016 00:56:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7BB9728176 for ; Wed, 25 May 2016 00:56:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 709B8281E3; Wed, 25 May 2016 00:56:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 209112822B for ; Wed, 25 May 2016 00:56:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1116F6E859; Wed, 25 May 2016 00:56:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.lekensteyn.nl (mail.lekensteyn.nl [IPv6:2a02:2308::360:1:25]) by gabe.freedesktop.org (Postfix) with ESMTPS id EECF56E6E6; Tue, 24 May 2016 22:53:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lekensteyn.nl; s=s2048-2015-q1; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=CzmNhA2fZqaREjThbw8CK3TkQwhf0xPsUF6/ZzDHB8M=; b=n21K71yFkA589LpAOUUFfaPborGOWpxb9gzDXHVlSd4Lt8ZKeON2Aux+oMSpdCuK4tNk/9k5+jk58/TPTgeLa850b4gZEa96c5id5cyhbguceWK6AExcChfdAmefIoVPlqLmees7mnstK2ht2wGbLinM5aeSa04DGJHik9M45ksowJtVgnoN36CFynVG2U7W/ECjbMqa8F9lddNu8HwKx09YdQti9a7AkSbJiyf14MwpG+qBPOFHk2UcF3jHeQQJGB50Db9JSB+8yAoom+RJKg7fitqX5f6VfrV+LNc/gTJ9v0zSFTsN1WSMfUkmfyfqDvPCeaWgqB5ou1tyos2/jw==; Received: by lekensteyn.nl with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_CBC_SHA256:128) (Exim 4.84_2) (envelope-from ) id 1b5LCp-0008Q6-Cj; Wed, 25 May 2016 00:53:44 +0200 From: Peter Wu To: nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 1/4] drm/nouveau/acpi: ensure matching ACPI handle and supported functions Date: Wed, 25 May 2016 00:52:58 +0200 Message-Id: <1464130381-4797-2-git-send-email-peter@lekensteyn.nl> X-Mailer: git-send-email 2.8.2 In-Reply-To: <1464130381-4797-1-git-send-email-peter@lekensteyn.nl> References: <1464130381-4797-1-git-send-email-peter@lekensteyn.nl> X-Mailman-Approved-At: Wed, 25 May 2016 00:56:08 +0000 Cc: Dave Airlie X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Ensure that the returned set of supported DSM functions (MUX, Optimus) match the ACPI handle that is set in nouveau_dsm_pci_probe. As there are no machines with a MUX function on just one PCI device and an Optimus on another, there should not be a functional impact. This change however makes this implicit assumption more obvious. Convert int to bool and rename has_dsm to has_mux while at it. Signed-off-by: Peter Wu --- drivers/gpu/drm/nouveau/nouveau_acpi.c | 55 ++++++++++++++-------------------- 1 file changed, 23 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index cdf5227..45fa9b2 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -57,9 +57,6 @@ bool nouveau_is_v1_dsm(void) { return nouveau_dsm_priv.dsm_detected; } -#define NOUVEAU_DSM_HAS_MUX 0x1 -#define NOUVEAU_DSM_HAS_OPT 0x2 - #ifdef CONFIG_VGA_SWITCHEROO static const char nouveau_dsm_muid[] = { 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D, @@ -212,26 +209,33 @@ static const struct vga_switcheroo_handler nouveau_dsm_handler = { .get_client_id = nouveau_dsm_get_client_id, }; -static int nouveau_dsm_pci_probe(struct pci_dev *pdev) +static void nouveau_dsm_pci_probe(struct pci_dev *pdev, bool *has_mux, + bool *has_opt) { acpi_handle dhandle; - int retval = 0; + bool supports_mux; + bool supports_opt; dhandle = ACPI_HANDLE(&pdev->dev); if (!dhandle) - return false; + return; if (!acpi_has_method(dhandle, "_DSM")) - return false; + return; + + supports_mux = acpi_check_dsm(dhandle, nouveau_dsm_muid, 0x00000102, + 1 << NOUVEAU_DSM_POWER); + supports_opt = nouveau_check_optimus_dsm(dhandle); - if (acpi_check_dsm(dhandle, nouveau_dsm_muid, 0x00000102, - 1 << NOUVEAU_DSM_POWER)) - retval |= NOUVEAU_DSM_HAS_MUX; + /* Does not look like a Nvidia device. */ + if (!supports_mux && !supports_opt) + return; - if (nouveau_check_optimus_dsm(dhandle)) - retval |= NOUVEAU_DSM_HAS_OPT; + nouveau_dsm_priv.dhandle = dhandle; + *has_mux = supports_mux; + *has_opt = supports_opt; - if (retval & NOUVEAU_DSM_HAS_OPT) { + if (supports_opt) { uint32_t result; nouveau_optimus_dsm(dhandle, NOUVEAU_DSM_OPTIMUS_CAPS, 0, &result); @@ -240,10 +244,6 @@ static int nouveau_dsm_pci_probe(struct pci_dev *pdev) (result & OPTIMUS_DYNAMIC_PWR_CAP) ? "dynamic power, " : "", (result & OPTIMUS_HDA_CODEC_MASK) ? "hda bios codec supported" : ""); } - if (retval) - nouveau_dsm_priv.dhandle = dhandle; - - return retval; } static bool nouveau_dsm_detect(void) @@ -251,11 +251,10 @@ static bool nouveau_dsm_detect(void) char acpi_method_name[255] = { 0 }; struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; struct pci_dev *pdev = NULL; - int has_dsm = 0; - int has_optimus = 0; + bool has_mux = false; + bool has_optimus = false; int vga_count = 0; bool guid_valid; - int retval; bool ret = false; /* lookup the MXM GUID */ @@ -268,32 +267,24 @@ static bool nouveau_dsm_detect(void) while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { vga_count++; - retval = nouveau_dsm_pci_probe(pdev); - if (retval & NOUVEAU_DSM_HAS_MUX) - has_dsm |= 1; - if (retval & NOUVEAU_DSM_HAS_OPT) - has_optimus = 1; + nouveau_dsm_pci_probe(pdev, &has_mux, &has_optimus); } while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_3D << 8, pdev)) != NULL) { vga_count++; - retval = nouveau_dsm_pci_probe(pdev); - if (retval & NOUVEAU_DSM_HAS_MUX) - has_dsm |= 1; - if (retval & NOUVEAU_DSM_HAS_OPT) - has_optimus = 1; + nouveau_dsm_pci_probe(pdev, &has_mux, &has_optimus); } /* find the optimus DSM or the old v1 DSM */ - if (has_optimus == 1) { + if (has_optimus) { acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, &buffer); printk(KERN_INFO "VGA switcheroo: detected Optimus DSM method %s handle\n", acpi_method_name); nouveau_dsm_priv.optimus_detected = true; ret = true; - } else if (vga_count == 2 && has_dsm && guid_valid) { + } else if (vga_count == 2 && has_mux && guid_valid) { acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, &buffer); printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n",