linux-kernel - [PATCH 2/2] drm/amdgpu: Remove ASPM workaround on VI and NV

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Message-Id: <20230329095933.1203559-2-kai.heng.feng@canonical.com>
Date:   Wed, 29 Mar 2023 17:59:30 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     alexander.deucher@....com, christian.koenig@....com,
        Xinhui.Pan@....com
Cc:     Kai-Heng Feng <kai.heng.feng@...onical.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Hawking Zhang <Hawking.Zhang@....com>,
        Likun Gao <Likun.Gao@....com>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Victor Zhao <Victor.Zhao@....com>,
        Jack Xiao <Jack.Xiao@....com>,
        Somalapuram Amaranath <Amaranath.Somalapuram@....com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Mario Limonciello <mario.limonciello@....com>,
        Lijo Lazar <lijo.lazar@....com>,
        YiPeng Chai <YiPeng.Chai@....com>,
        Andrey Grodzovsky <andrey.grodzovsky@....com>,
        Bokun Zhang <Bokun.Zhang@....com>,
        Guchun Chen <guchun.chen@....com>,
        Veerabadhran Gopalakrishnan <veerabadhran.gopalakrishnan@....com>,
        Richard Gong <richard.gong@....com>,
        Evan Quan <evan.quan@....com>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] drm/amdgpu: Remove ASPM workaround on VI and NV

Since the original issue is resolved by a new fix, the ASPM workaround
can be dropped.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  1 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 15 ---------------
 drivers/gpu/drm/amd/amdgpu/nv.c            |  2 +-
 drivers/gpu/drm/amd/amdgpu/vi.c            |  2 +-
 4 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 8cf2cc50b3de..a19a6489b117 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1248,7 +1248,6 @@ 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_should_use_aspm(struct amdgpu_device *adev);
-bool amdgpu_device_aspm_support_quirk(void);
 
 void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
 				  u64 num_vis_bytes);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index d56b7a2bafa6..0cacace2d6c2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -81,10 +81,6 @@
 
 #include <drm/drm_drv.h>
 
-#if IS_ENABLED(CONFIG_X86)
-#include <asm/intel-family.h>
-#endif
-
 MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin");
 MODULE_FIRMWARE("amdgpu/vega12_gpu_info.bin");
 MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin");
@@ -1377,17 +1373,6 @@ bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev)
 	return pcie_aspm_enabled(adev->pdev);
 }
 
-bool amdgpu_device_aspm_support_quirk(void)
-{
-#if IS_ENABLED(CONFIG_X86)
-	struct cpuinfo_x86 *c = &cpu_data(0);
-
-	return !(c->x86 == 6 && c->x86_model == INTEL_FAM6_ALDERLAKE);
-#else
-	return true;
-#endif
-}
-
 /* if we get transitioned to only one device, take VGA back */
 /**
  * amdgpu_device_vga_set_decode - enable/disable vga decode
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index 47420b403871..15f3c6745ea9 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -522,7 +522,7 @@ static int nv_set_vce_clocks(struct amdgpu_device *adev, u32 evclk, u32 ecclk)
 
 static void nv_program_aspm(struct amdgpu_device *adev)
 {
-	if (!amdgpu_device_should_use_aspm(adev) || !amdgpu_device_aspm_support_quirk())
+	if (!amdgpu_device_should_use_aspm(adev))
 		return;
 
 	if (!(adev->flags & AMD_IS_APU) &&
diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c
index 531f173ade2d..81dcb1148a60 100644
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -1122,7 +1122,7 @@ static void vi_program_aspm(struct amdgpu_device *adev)
 	bool bL1SS = false;
 	bool bClkReqSupport = true;
 
-	if (!amdgpu_device_should_use_aspm(adev) || !amdgpu_device_aspm_support_quirk())
+	if (!amdgpu_device_should_use_aspm(adev))
 		return;
 
 	if (adev->flags & AMD_IS_APU ||
-- 
2.34.1