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drm/amdgpu: cleanups for vram lost handling 

1)create a routine "handle_vram_lost" to do the vram
recovery, and put it into amdgpu_device_reset/reset_sriov,
this way no need of the extra paramter to hold the
VRAM LOST information and the related macros can be removed.

3)show vram_recover failure if time out, and set TMO equal to
lockup_timeout if vram_recover is under SRIOV runtime mode.

4)report error if any ip reset failed for SR-IOV

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu 2017-12-25 11:59:27 +08:00 committed by Alex Deucher
parent 711826656b
commit c41d1cf62d
2 changed files with 72 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -181,10 +181,6 @@ extern int amdgpu_cik_support;
#define CIK_CURSOR_WIDTH 128
#define CIK_CURSOR_HEIGHT 128
/* GPU RESET flags */
#define AMDGPU_RESET_INFO_VRAM_LOST (1 << 0)
#define AMDGPU_RESET_INFO_FULLRESET (1 << 1)
struct amdgpu_device;
struct amdgpu_ib;
struct amdgpu_cs_parser;

137
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -1591,6 +1591,8 @@ static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev)
r = block->version->funcs->hw_init(adev);
DRM_INFO("RE-INIT: %s %s\n", block->version->funcs->name, r?"failed":"successed");
if (r)
return r;
}
}
@ -1624,6 +1626,8 @@ static int amdgpu_device_ip_reinit_late_sriov(struct amdgpu_device *adev)
r = block->version->funcs->hw_init(adev);
DRM_INFO("RE-INIT: %s %s\n", block->version->funcs->name, r?"failed":"successed");
if (r)
return r;
}
}
@ -2470,17 +2474,71 @@ err:
return r;
}
static int amdgpu_device_handle_vram_lost(struct amdgpu_device *adev)
{
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
struct amdgpu_bo *bo, *tmp;
struct dma_fence *fence = NULL, *next = NULL;
long r = 1;
int i = 0;
long tmo;
if (amdgpu_sriov_runtime(adev))
tmo = msecs_to_jiffies(amdgpu_lockup_timeout);
else
tmo = msecs_to_jiffies(100);
DRM_INFO("recover vram bo from shadow start\n");
mutex_lock(&adev->shadow_list_lock);
list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) {
next = NULL;
amdgpu_device_recover_vram_from_shadow(adev, ring, bo, &next);
if (fence) {
r = dma_fence_wait_timeout(fence, false, tmo);
if (r == 0)
pr_err("wait fence %p[%d] timeout\n", fence, i);
else if (r < 0)
pr_err("wait fence %p[%d] interrupted\n", fence, i);
if (r < 1) {
dma_fence_put(fence);
fence = next;
break;
}
i++;
}
dma_fence_put(fence);
fence = next;
}
mutex_unlock(&adev->shadow_list_lock);
if (fence) {
r = dma_fence_wait_timeout(fence, false, tmo);
if (r == 0)
pr_err("wait fence %p[%d] timeout\n", fence, i);
else if (r < 0)
pr_err("wait fence %p[%d] interrupted\n", fence, i);
}
dma_fence_put(fence);
if (r > 0)
DRM_INFO("recover vram bo from shadow done\n");
else
DRM_ERROR("recover vram bo from shadow failed\n");
return (r > 0?0:1);
}
/*
* amdgpu_device_reset - reset ASIC/GPU for bare-metal or passthrough
*
* @adev: amdgpu device pointer
* @reset_flags: output param tells caller the reset result
*
* attempt to do soft-reset or full-reset and reinitialize Asic
* return 0 means successed otherwise failed
*/
static int amdgpu_device_reset(struct amdgpu_device *adev,
uint64_t* reset_flags)
static int amdgpu_device_reset(struct amdgpu_device *adev)
{
bool need_full_reset, vram_lost = 0;
int r;
@ -2495,7 +2553,6 @@ static int amdgpu_device_reset(struct amdgpu_device *adev,
DRM_INFO("soft reset failed, will fallback to full reset!\n");
need_full_reset = true;
}
}
if (need_full_reset) {
@ -2544,13 +2601,8 @@ out:
}
}
if (reset_flags) {
if (vram_lost)
(*reset_flags) |= AMDGPU_RESET_INFO_VRAM_LOST;
if (need_full_reset)
(*reset_flags) |= AMDGPU_RESET_INFO_FULLRESET;
}
if (!r && ((need_full_reset && !(adev->flags & AMD_IS_APU)) || vram_lost))
r = amdgpu_device_handle_vram_lost(adev);
return r;
}
@ -2559,14 +2611,11 @@ out:
* amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf
*
* @adev: amdgpu device pointer
* @reset_flags: output param tells caller the reset result
*
* do VF FLR and reinitialize Asic
* return 0 means successed otherwise failed
*/
static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
uint64_t *reset_flags,
bool from_hypervisor)
static int amdgpu_device_reset_sriov(struct amdgpu_device *adev, bool from_hypervisor)
{
int r;
@ -2587,27 +2636,19 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
/* now we are okay to resume SMC/CP/SDMA */
r = amdgpu_device_ip_reinit_late_sriov(adev);
amdgpu_virt_release_full_gpu(adev, true);
if (r)
goto error;
amdgpu_irq_gpu_reset_resume_helper(adev);
r = amdgpu_ib_ring_tests(adev);
if (r)
dev_err(adev->dev, "[GPU_RESET] ib ring test failed (%d).\n", r);
if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
atomic_inc(&adev->vram_lost_counter);
r = amdgpu_device_handle_vram_lost(adev);
}
error:
/* release full control of GPU after ib test */
amdgpu_virt_release_full_gpu(adev, true);
if (reset_flags) {
if (adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
(*reset_flags) |= AMDGPU_RESET_INFO_VRAM_LOST;
atomic_inc(&adev->vram_lost_counter);
}
/* VF FLR or hotlink reset is always full-reset */
(*reset_flags) |= AMDGPU_RESET_INFO_FULLRESET;
}
return r;
}
@ -2626,7 +2667,6 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
struct amdgpu_job *job, bool force)
{
struct drm_atomic_state *state = NULL;
uint64_t reset_flags = 0;
int i, r, resched;
if (!force && !amdgpu_device_ip_check_soft_reset(adev)) {
@ -2672,42 +2712,9 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
}
if (amdgpu_sriov_vf(adev))
r = amdgpu_device_reset_sriov(adev, &reset_flags, job ? false : true);
r = amdgpu_device_reset_sriov(adev, job ? false : true);
else
r = amdgpu_device_reset(adev, &reset_flags);
if (!r) {
if (((reset_flags & AMDGPU_RESET_INFO_FULLRESET) && !(adev->flags & AMD_IS_APU)) ||
(reset_flags & AMDGPU_RESET_INFO_VRAM_LOST)) {
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
struct amdgpu_bo *bo, *tmp;
struct dma_fence *fence = NULL, *next = NULL;
DRM_INFO("recover vram bo from shadow\n");
mutex_lock(&adev->shadow_list_lock);
list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) {
next = NULL;
amdgpu_device_recover_vram_from_shadow(adev, ring, bo, &next);
if (fence) {
r = dma_fence_wait(fence, false);
if (r) {
WARN(r, "recovery from shadow isn't completed\n");
break;
}
}
dma_fence_put(fence);
fence = next;
}
mutex_unlock(&adev->shadow_list_lock);
if (fence) {
r = dma_fence_wait(fence, false);
if (r)
WARN(r, "recovery from shadow isn't completed\n");
}
dma_fence_put(fence);
}
}
r = amdgpu_device_reset(adev);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];