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Message-ID: <CADnq5_OkFhONSKn2DbGhxaXyaSjzu0RBnydd99wgsVudxW3kxQ@mail.gmail.com>
Date: Tue, 14 Mar 2023 11:22:56 -0400
From: Alex Deucher <alexdeucher@...il.com>
To: Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc: alexander.deucher@....com, christian.koenig@....com,
Xinhui.Pan@....com, Lijo Lazar <lijo.lazar@....com>,
dri-devel@...ts.freedesktop.org, YiPeng Chai <YiPeng.Chai@....com>,
Mario Limonciello <mario.limonciello@....com>,
Likun Gao <Likun.Gao@....com>, amd-gfx@...ts.freedesktop.org,
Jiansong Chen <Jiansong.Chen@....com>,
Kenneth Feng <kenneth.feng@....com>,
Andrey Grodzovsky <andrey.grodzovsky@....com>,
Victor Zhao <Victor.Zhao@....com>,
Bokun Zhang <Bokun.Zhang@....com>,
Veerabadhran Gopalakrishnan <veerabadhran.gopalakrishnan@....com>,
Evan Quan <evan.quan@....com>, Jack Xiao <Jack.Xiao@....com>,
Richard Gong <richard.gong@....com>,
Felix Kuehling <Felix.Kuehling@....com>,
Somalapuram Amaranath <Amaranath.Somalapuram@....com>,
linux-kernel@...r.kernel.org, Leo Liu <leo.liu@....com>,
Hawking Zhang <Hawking.Zhang@....com>
Subject: Re: [PATCH] drm/amdgpu/nv: Apply ASPM quirk on Intel ADL + AMD Navi
On Tue, Mar 14, 2023 at 12:35 AM Kai-Heng Feng
<kai.heng.feng@...onical.com> wrote:
>
> S2idle resume freeze can be observed on Intel ADL + AMD WX5500. This is
> caused by commit 0064b0ce85bb ("drm/amd/pm: enable ASPM by default").
>
> The root cause is still not clear for now.
>
> So extend and apply the ASPM quirk from commit e02fe3bc7aba
> ("drm/amdgpu: vi: disable ASPM on Intel Alder Lake based systems"), to
> workaround the issue on Navi cards too.
>
> Fixes: 0064b0ce85bb ("drm/amd/pm: enable ASPM by default")
> Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2458
> 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 | 15 ---------------
> 4 files changed, 17 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 164141bc8b4a..c697580f1ee4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -1272,6 +1272,7 @@ 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 aspm_support_quirk_check(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 c4a4e2fe6681..c09f19385628 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -80,6 +80,10 @@
>
> #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");
> @@ -1356,6 +1360,17 @@ bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev)
> return pcie_aspm_enabled(adev->pdev);
> }
>
> +bool aspm_support_quirk_check(void)
For consistency with naming, rename this
amdgpu_device_aspm_support_quirk(). Other than that, looks good to
me. With that fixed:
Reviewed-by: Alex Deucher <alexander.deucher@....com>
Alex
> +{
> +#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 855d390c41de..921adf66e3c4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nv.c
> @@ -578,7 +578,7 @@ static void nv_pcie_gen3_enable(struct amdgpu_device *adev)
>
> static void nv_program_aspm(struct amdgpu_device *adev)
> {
> - if (!amdgpu_device_should_use_aspm(adev))
> + if (!amdgpu_device_should_use_aspm(adev) || !aspm_support_quirk_check())
> 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 12ef782eb478..e61ae372d674 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vi.c
> @@ -81,10 +81,6 @@
> #include "mxgpu_vi.h"
> #include "amdgpu_dm.h"
>
> -#if IS_ENABLED(CONFIG_X86)
> -#include <asm/intel-family.h>
> -#endif
> -
> #define ixPCIE_LC_L1_PM_SUBSTATE 0x100100C6
> #define PCIE_LC_L1_PM_SUBSTATE__LC_L1_SUBSTATES_OVERRIDE_EN_MASK 0x00000001L
> #define PCIE_LC_L1_PM_SUBSTATE__LC_PCI_PM_L1_2_OVERRIDE_MASK 0x00000002L
> @@ -1138,17 +1134,6 @@ static void vi_enable_aspm(struct amdgpu_device *adev)
> WREG32_PCIE(ixPCIE_LC_CNTL, data);
> }
>
> -static bool aspm_support_quirk_check(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
> -}
> -
> static void vi_program_aspm(struct amdgpu_device *adev)
> {
> u32 data, data1, orig;
> --
> 2.34.1
>
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