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drm/amdgpu: Add init level for post reset reinit

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When device needs to be reset before initialization, it's not required
for all IPs to be initialized before a reset. In such cases, it needs to
identify whether the IP/feature is initialized for the first time or
whether it's reinitialized after a reset.

Add RESET_RECOVERY init level to identify post reset reinitialization
phase. This only provides a device level identification, IP/features may
choose to track their state independently also.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar
2024-11-15 11:08:02 +05:30
committed by Alex Deucher
parent 6719ab8234
commit a86e0c0e94
7 changed files with 38 additions and 3 deletions
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25
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -156,6 +156,11 @@ struct amdgpu_init_level amdgpu_init_default = {
.hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL,
};
struct amdgpu_init_level amdgpu_init_recovery = {
.level = AMDGPU_INIT_LEVEL_RESET_RECOVERY,
.hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL,
};
/*
* Minimal blocks needed to be initialized before a XGMI hive can be reset. This
* is used for cases like reset on initialization where the entire hive needs to
@@ -182,6 +187,9 @@ void amdgpu_set_init_level(struct amdgpu_device *adev,
case AMDGPU_INIT_LEVEL_MINIMAL_XGMI:
adev->init_lvl = &amdgpu_init_minimal_xgmi;
break;
case AMDGPU_INIT_LEVEL_RESET_RECOVERY:
adev->init_lvl = &amdgpu_init_recovery;
break;
case AMDGPU_INIT_LEVEL_DEFAULT:
fallthrough;
default:
@@ -5419,7 +5427,7 @@ int amdgpu_device_reinit_after_reset(struct amdgpu_reset_context *reset_context)
struct list_head *device_list_handle;
bool full_reset, vram_lost = false;
struct amdgpu_device *tmp_adev;
int r;
int r, init_level;
device_list_handle = reset_context->reset_device_list;
@@ -5428,10 +5436,18 @@ int amdgpu_device_reinit_after_reset(struct amdgpu_reset_context *reset_context)
full_reset = test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
/**
* If it's reset on init, it's default init level, otherwise keep level
* as recovery level.
*/
if (reset_context->method == AMD_RESET_METHOD_ON_INIT)
init_level = AMDGPU_INIT_LEVEL_DEFAULT;
else
init_level = AMDGPU_INIT_LEVEL_RESET_RECOVERY;
r = 0;
list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
/* After reset, it's default init level */
amdgpu_set_init_level(tmp_adev, AMDGPU_INIT_LEVEL_DEFAULT);
amdgpu_set_init_level(tmp_adev, init_level);
if (full_reset) {
/* post card */
amdgpu_ras_set_fed(tmp_adev, false);
@@ -5518,6 +5534,9 @@ int amdgpu_device_reinit_after_reset(struct amdgpu_reset_context *reset_context)
out:
if (!r) {
/* IP init is complete now, set level as default */
amdgpu_set_init_level(tmp_adev,
AMDGPU_INIT_LEVEL_DEFAULT);
amdgpu_irq_gpu_reset_resume_helper(tmp_adev);
r = amdgpu_ib_ring_tests(tmp_adev);
if (r) {