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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D88BC0015E for ; Tue, 1 Aug 2023 09:31:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232034AbjHAJbs (ORCPT ); Tue, 1 Aug 2023 05:31:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232960AbjHAJbc (ORCPT ); Tue, 1 Aug 2023 05:31:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4336359B for ; Tue, 1 Aug 2023 02:30:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E5AF4614B2 for ; Tue, 1 Aug 2023 09:30:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3647C433C8; Tue, 1 Aug 2023 09:30:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690882208; bh=hw6JS4fcj4nptFVARt+WCMmcChQXms9A/uQTfnGfl5I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MV976uLMpfBvAxORXyeGaGqDk/LunOSe2GHqnr5y0uDpLj6OhvNhYJPZqRSJeqX+l r1skLkwDlqPz/HS13A1Re6M6LtilcuIPiVWVX/mYGlI0PsifF6WaDQC7mkebqtX0Jq FQ40l5Gz4vtGnBnCwR6wRzs3tiy1wP2IpmDGgmcU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mario Limonciello , Evan Quan , Alex Deucher Subject: [PATCH 6.1 007/228] drm/amd: Move helper for dynamic speed switch check out of smu13 Date: Tue, 1 Aug 2023 11:17:45 +0200 Message-ID: <20230801091923.087337470@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230801091922.799813980@linuxfoundation.org> References: <20230801091922.799813980@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mario Limonciello commit 188623076d0f1a500583d392b6187056bf7cc71a upstream. This helper is used for checking if the connected host supports the feature, it can be moved into generic code to be used by other smu implementations as well. Signed-off-by: Mario Limonciello Reviewed-by: Evan Quan Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org # 6.1.x Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 19 +++++++++++++++++++ drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c | 21 +-------------------- 3 files changed, 21 insertions(+), 20 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1262,6 +1262,7 @@ int amdgpu_device_gpu_recover(struct amd void amdgpu_device_pci_config_reset(struct amdgpu_device *adev); int amdgpu_device_pci_reset(struct amdgpu_device *adev); bool amdgpu_device_need_post(struct amdgpu_device *adev); +bool amdgpu_device_pcie_dynamic_switching_supported(void); bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev); bool amdgpu_device_aspm_support_quirk(void); --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1333,6 +1333,25 @@ bool amdgpu_device_need_post(struct amdg return true; } +/* + * Intel hosts such as Raptor Lake and Sapphire Rapids don't support dynamic + * speed switching. Until we have confirmation from Intel that a specific host + * supports it, it's safer that we keep it disabled for all. + * + * https://edc.intel.com/content/www/us/en/design/products/platforms/details/raptor-lake-s/13th-generation-core-processors-datasheet-volume-1-of-2/005/pci-express-support/ + * https://gitlab.freedesktop.org/drm/amd/-/issues/2663 + */ +bool amdgpu_device_pcie_dynamic_switching_supported(void) +{ +#if IS_ENABLED(CONFIG_X86) + struct cpuinfo_x86 *c = &cpu_data(0); + + if (c->x86_vendor == X86_VENDOR_INTEL) + return false; +#endif + return true; +} + /** * amdgpu_device_should_use_aspm - check if the device should program ASPM * --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c @@ -2490,25 +2490,6 @@ int smu_v13_0_mode1_reset(struct smu_con return ret; } -/* - * Intel hosts such as Raptor Lake and Sapphire Rapids don't support dynamic - * speed switching. Until we have confirmation from Intel that a specific host - * supports it, it's safer that we keep it disabled for all. - * - * https://edc.intel.com/content/www/us/en/design/products/platforms/details/raptor-lake-s/13th-generation-core-processors-datasheet-volume-1-of-2/005/pci-express-support/ - * https://gitlab.freedesktop.org/drm/amd/-/issues/2663 - */ -static bool smu_v13_0_is_pcie_dynamic_switching_supported(void) -{ -#if IS_ENABLED(CONFIG_X86) - struct cpuinfo_x86 *c = &cpu_data(0); - - if (c->x86_vendor == X86_VENDOR_INTEL) - return false; -#endif - return true; -} - int smu_v13_0_update_pcie_parameters(struct smu_context *smu, uint32_t pcie_gen_cap, uint32_t pcie_width_cap) @@ -2520,7 +2501,7 @@ int smu_v13_0_update_pcie_parameters(str uint32_t smu_pcie_arg; int ret, i; - if (!smu_v13_0_is_pcie_dynamic_switching_supported()) { + if (!amdgpu_device_pcie_dynamic_switching_supported()) { if (pcie_table->pcie_gen[num_of_levels - 1] < pcie_gen_cap) pcie_gen_cap = pcie_table->pcie_gen[num_of_levels - 1];