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From e94d1b9dc4a2d57d84c30b2662120ce4b8577e68 Mon Sep 17 00:00:00 2001
From: Jim Qu <Jim.Qu@amd.com>
Date: Wed, 7 Nov 2018 12:29:39 +0800
Subject: [PATCH 1097/2940] drm/amdgpu: use BACO reset if platform support (v2)
It will fall back to use mode1 reset if platform does not support BACO
feature.
v2: squash in warning fix (Alex)
Signed-off-by: Jim Qu <Jim.Qu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/soc15.c | 61 ++++++++++++++++++++++++++++--
1 file changed, 58 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 4e560593859f..41a4455e2c98 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -389,14 +389,13 @@ void soc15_program_register_sequence(struct amdgpu_device *adev,
}
-
-static int soc15_asic_reset(struct amdgpu_device *adev)
+static int soc15_asic_mode1_reset(struct amdgpu_device *adev)
{
u32 i;
amdgpu_atombios_scratch_regs_engine_hung(adev, true);
- dev_info(adev->dev, "GPU reset\n");
+ dev_info(adev->dev, "GPU mode1 reset\n");
/* disable BM */
pci_clear_master(adev->pdev);
@@ -421,6 +420,62 @@ static int soc15_asic_reset(struct amdgpu_device *adev)
return 0;
}
+static int soc15_asic_get_baco_capability(struct amdgpu_device *adev, bool *cap)
+{
+ void *pp_handle = adev->powerplay.pp_handle;
+ const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+
+ if (!pp_funcs || !pp_funcs->get_asic_baco_capability) {
+ *cap = false;
+ return -1;
+ }
+
+ return pp_funcs->get_asic_baco_capability(pp_handle, cap);
+}
+
+static int soc15_asic_baco_reset(struct amdgpu_device *adev)
+{
+ void *pp_handle = adev->powerplay.pp_handle;
+ const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+
+ if (!pp_funcs ||!pp_funcs->get_asic_baco_state ||!pp_funcs->set_asic_baco_state)
+ return -1;
+
+ /* enter BACO state */
+ if (pp_funcs->set_asic_baco_state(pp_handle, 1))
+ return -1;
+
+ /* exit BACO state */
+ if (pp_funcs->set_asic_baco_state(pp_handle, 0))
+ return -1;
+
+ dev_info(adev->dev, "GPU BACO reset\n");
+
+ return 0;
+}
+
+static int soc15_asic_reset(struct amdgpu_device *adev)
+{
+ int ret;
+ bool baco_reset;
+
+ switch (adev->asic_type) {
+ case CHIP_VEGA10:
+ soc15_asic_get_baco_capability(adev, &baco_reset);
+ break;
+ default:
+ baco_reset = false;
+ break;
+ }
+
+ if (baco_reset)
+ ret = soc15_asic_baco_reset(adev);
+ else
+ ret = soc15_asic_mode1_reset(adev);
+
+ return ret;
+}
+
/*static int soc15_set_uvd_clock(struct amdgpu_device *adev, u32 clock,
u32 cntl_reg, u32 status_reg)
{
--
2.17.1
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