From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Tue, 12 Dec 2017 14:09:30 -0500
Subject: drm/amdgpu: Add gpu_recovery parameter
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Git-commit: dcebf026e6f69fb79e7f88d10681faf4f8a985ba
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Add new parameter to control GPU recovery procedure.
v2:
Add auto logic where reset is disabled for bare metal and enabled
for SR-IOV.
Allow forced reset from debugfs.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 9 ++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ++++
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 2 +-
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 2 +-
drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c | 2 +-
8 files changed, 19 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -126,6 +126,7 @@ extern int amdgpu_param_buf_per_se;
extern int amdgpu_job_hang_limit;
extern int amdgpu_lbpw;
extern int amdgpu_compute_multipipe;
+extern int amdgpu_gpu_recovery;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;
@@ -1910,7 +1911,7 @@ amdgpu_get_sdma_instance(struct amdgpu_r
#define amdgpu_psp_check_fw_loading_status(adev, i) (adev)->firmware.funcs->check_fw_loading_status((adev), (i))
/* Common functions */
-int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job* job);
+int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job* job, bool force);
bool amdgpu_need_backup(struct amdgpu_device *adev);
void amdgpu_pci_config_reset(struct amdgpu_device *adev);
bool amdgpu_need_post(struct amdgpu_device *adev);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3009,11 +3009,12 @@ error:
*
* @adev: amdgpu device pointer
* @job: which job trigger hang
+ * @force forces reset regardless of amdgpu_gpu_recovery
*
* Attempt to reset the GPU if it has hung (all asics).
* Returns 0 for success or an error on failure.
*/
-int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job *job)
+int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job *job, bool force)
{
struct drm_atomic_state *state = NULL;
uint64_t reset_flags = 0;
@@ -3024,6 +3025,12 @@ int amdgpu_gpu_recover(struct amdgpu_dev
return 0;
}
+ if (!force && (amdgpu_gpu_recovery == 0 ||
+ (amdgpu_gpu_recovery == -1 && !amdgpu_sriov_vf(adev)))) {
+ DRM_INFO("GPU recovery disabled.\n");
+ return 0;
+ }
+
dev_info(adev->dev, "GPU reset begin!\n");
mutex_lock(&adev->lock_reset);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -128,6 +128,7 @@ int amdgpu_param_buf_per_se = 0;
int amdgpu_job_hang_limit = 0;
int amdgpu_lbpw = -1;
int amdgpu_compute_multipipe = -1;
+int amdgpu_gpu_recovery = -1; /* auto */
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
@@ -280,6 +281,9 @@ module_param_named(lbpw, amdgpu_lbpw, in
MODULE_PARM_DESC(compute_multipipe, "Force compute queues to be spread across pipes (1 = enable, 0 = disable, -1 = auto)");
module_param_named(compute_multipipe, amdgpu_compute_multipipe, int, 0444);
+MODULE_PARM_DESC(gpu_recovery, "Enable GPU recovery mechanism, (1 = enable, 0 = disable, -1 = auto");
+module_param_named(gpu_recovery, amdgpu_gpu_recovery, int, 0444);
+
#ifdef CONFIG_DRM_AMDGPU_SI
#if defined(CONFIG_DRM_RADEON) || defined(CONFIG_DRM_RADEON_MODULE)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -705,7 +705,7 @@ static int amdgpu_debugfs_gpu_recover(st
struct amdgpu_device *adev = dev->dev_private;
seq_printf(m, "gpu recover\n");
- amdgpu_gpu_recover(adev, NULL);
+ amdgpu_gpu_recover(adev, NULL, true);
return 0;
}
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -88,7 +88,7 @@ static void amdgpu_irq_reset_work_func(s
reset_work);
if (!amdgpu_sriov_vf(adev))
- amdgpu_gpu_recover(adev, NULL);
+ amdgpu_gpu_recover(adev, NULL, false);
}
/* Disable *all* interrupts */
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -37,7 +37,7 @@ static void amdgpu_job_timedout(struct d
atomic_read(&job->ring->fence_drv.last_seq),
job->ring->fence_drv.sync_seq);
- amdgpu_gpu_recover(job->adev, job);
+ amdgpu_gpu_recover(job->adev, job, false);
}
int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
@@ -253,7 +253,7 @@ static void xgpu_ai_mailbox_flr_work(str
}
/* Trigger recovery due to world switch failure */
- amdgpu_gpu_recover(adev, NULL);
+ amdgpu_gpu_recover(adev, NULL, false);
}
static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev,
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
@@ -521,7 +521,7 @@ static void xgpu_vi_mailbox_flr_work(str
}
/* Trigger recovery due to world switch failure */
- amdgpu_gpu_recover(adev, NULL);
+ amdgpu_gpu_recover(adev, NULL, false);
}
static int xgpu_vi_set_mailbox_rcv_irq(struct amdgpu_device *adev,