On 8/28/20 3:29 PM, Alex Deucher wrote:
On Fri, Aug 28, 2020 at 12:06 PM Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx> wrote:Wait for HW/PSP initiated ASIC reset to complete before starting the recovery operations. v2: Remove typo Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 9a367a8..06664a9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -4844,14 +4844,32 @@ pci_ers_result_t amdgpu_pci_slot_reset(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); struct amdgpu_device *adev = drm_to_adev(dev); - int r; + int r, i; bool vram_lost; + u32 memsize; DRM_INFO("PCI error: slot reset callback!!\n"); + /* wait for asic to come out of reset */ + msleep(500); +I wonder if other reset paths need this wait as well? Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
They already have this (see psp_v11_0_mode1_reset) Andrey
pci_restore_state(pdev); - adev->in_pci_err_recovery = true; + /* confirm ASIC came out of reset */ + for (i = 0; i < adev->usec_timeout; i++) { + memsize = amdgpu_asic_get_config_memsize(adev); + + if (memsize != 0xffffffff) + break; + udelay(1); + } + if (memsize == 0xffffffff) { + r = -ETIME; + goto out; + } + + /* TODO Call amdgpu_pre_asic_reset instead */ + adev->in_pci_err_recovery = true; r = amdgpu_device_ip_suspend(adev); adev->in_pci_err_recovery = false; if (r) -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=02%7C01%7Candrey.grodzovsky%40amd.com%7Cbcd9cce89b49498ecc9808d84b88ac73%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637342397661929023&sdata=imwQ%2F25z3XUPWlPtnP2UTCfRmv3Ejx04zWvOHn1Re7k%3D&reserved=0
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