We need to save and restore PCI config space.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/nv.c | 34 ++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index 221a29cdc0aa..70d6556cd01d 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -336,6 +336,38 @@ static int nv_asic_mode1_reset(struct amdgpu_device *adev)
return ret;
}
+static int nv_asic_mode2_reset(struct amdgpu_device *adev)
+{
+ u32 i;
+ int ret = 0;
+
+ amdgpu_atombios_scratch_regs_engine_hung(adev, true);
+
+ /* disable BM */
+ pci_clear_master(adev->pdev);
+
+ amdgpu_device_cache_pci_state(adev->pdev);
+
+ ret = amdgpu_dpm_mode2_reset(adev);
+ if (ret)
+ dev_err(adev->dev, "GPU mode2 reset failed\n");
+
+ amdgpu_device_load_pci_state(adev->pdev);
+
+ /* wait for asic to come out of reset */
+ for (i = 0; i < adev->usec_timeout; i++) {
+ u32 memsize = adev->nbio.funcs->get_memsize(adev);
+
+ if (memsize != 0xffffffff)
+ break;
+ udelay(1);
+ }
+
+ amdgpu_atombios_scratch_regs_engine_hung(adev, false);
+
+ return ret;
+}
+
static bool nv_asic_supports_baco(struct amdgpu_device *adev)
{
struct smu_context *smu = &adev->smu;
@@ -392,7 +424,7 @@ static int nv_asic_reset(struct amdgpu_device *adev)
break;
case AMD_RESET_METHOD_MODE2:
dev_info(adev->dev, "MODE2 reset\n");
- ret = amdgpu_dpm_mode2_reset(adev);
+ ret = nv_asic_mode2_reset(adev);
break;
default:
dev_info(adev->dev, "MODE1 reset\n");
--
2.25.4
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