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drm/amdgpu: add debugfs amdgpu_reset_level

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Introduce amdgpu_reset_level debugfs in order to help debug and
test specific type of reset. Also helps blocking unwanted type of
resets.

By default, mode2 reset will not be enabled

v2: make this debugfs in adev and use debugfs_create_u32

Signed-off-by: Victor Zhao <Victor.Zhao@amd.com>
Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Victor Zhao 2022-06-14 10:48:11 +08:00 committed by Alex Deucher
parent dac6b80818
commit 5bd8d53f6f
4 changed files with 18 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -274,6 +274,9 @@ extern int amdgpu_vcnfw_log;
#define AMDGPU_RESET_VCE (1 << 13)
#define AMDGPU_RESET_VCE1 (1 << 14)
#define AMDGPU_RESET_LEVEL_SOFT_RECOVERY (1 << 0)
#define AMDGPU_RESET_LEVEL_MODE2 (1 << 1)
/* max cursor sizes (in pixels) */
#define CIK_CURSOR_WIDTH 128
#define CIK_CURSOR_HEIGHT 128
@ -1060,6 +1063,8 @@ struct amdgpu_device {
uint32_t scpm_status;
struct work_struct reset_work;
uint32_t amdgpu_reset_level_mask;
};
static inline struct amdgpu_device *drm_to_adev(struct drm_device *ddev)

2
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
View file

@ -1786,6 +1786,8 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
return PTR_ERR(ent);
}
debugfs_create_u32("amdgpu_reset_level", 0600, root, &adev->amdgpu_reset_level_mask);
/* Register debugfs entries for amdgpu_ttm */
amdgpu_ttm_debugfs_init(adev);
amdgpu_debugfs_pm_init(adev);

8
drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
View file

@ -37,6 +37,8 @@ int amdgpu_reset_init(struct amdgpu_device *adev)
{
int ret = 0;
adev->amdgpu_reset_level_mask = 0x1;
switch (adev->ip_versions[MP1_HWIP][0]) {
case IP_VERSION(13, 0, 2):
ret = aldebaran_reset_init(adev);
@ -74,6 +76,9 @@ int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
{
struct amdgpu_reset_handler *reset_handler = NULL;
if (!(adev->amdgpu_reset_level_mask & AMDGPU_RESET_LEVEL_MODE2))
return -ENOSYS;
if (test_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context->flags))
return -ENOSYS;
@ -93,6 +98,9 @@ int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
int ret;
struct amdgpu_reset_handler *reset_handler = NULL;
if (!(adev->amdgpu_reset_level_mask & AMDGPU_RESET_LEVEL_MODE2))
return -ENOSYS;
if (test_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context->flags))
return -ENOSYS;

3
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
View file

@ -405,6 +405,9 @@ bool amdgpu_ring_soft_recovery(struct amdgpu_ring *ring, unsigned int vmid,
{
ktime_t deadline = ktime_add_us(ktime_get(), 10000);
if (!(ring->adev->amdgpu_reset_level_mask & AMDGPU_RESET_LEVEL_SOFT_RECOVERY))
return false;
if (amdgpu_sriov_vf(ring->adev) || !ring->funcs->soft_recovery || !fence)
return false;