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drm/amdgpu: implement retry fault handling for Navi

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Same as gmc9, basically filter the fault, reroute or handle it.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2020-11-03 14:40:57 +01:00 committed by Alex Deucher
parent d4581f7dfb
commit a2a8857cee
1 changed files with 25 additions and 0 deletions
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25
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
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@ -94,6 +94,7 @@ static int gmc_v10_0_process_interrupt(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
struct amdgpu_iv_entry *entry)
{
bool retry_fault = !!(entry->src_data[1] & 0x80);
struct amdgpu_vmhub *hub = &adev->vmhub[entry->vmid_src];
struct amdgpu_task_info task_info;
uint32_t status = 0;
@ -102,6 +103,30 @@ static int gmc_v10_0_process_interrupt(struct amdgpu_device *adev,
addr = (u64)entry->src_data[0] << 12;
addr |= ((u64)entry->src_data[1] & 0xf) << 44;
if (retry_fault) {
/* Returning 1 here also prevents sending the IV to the KFD */
/* Process it onyl if it's the first fault for this address */
if (entry->ih != &adev->irq.ih_soft &&
amdgpu_gmc_filter_faults(adev, addr, entry->pasid,
entry->timestamp))
return 1;
/* Delegate it to a different ring if the hardware hasn't
* already done it.
*/
if (in_interrupt()) {
amdgpu_irq_delegate(adev, entry, 8);
return 1;
}
/* Try to handle the recoverable page faults by filling page
* tables
*/
if (amdgpu_vm_handle_fault(adev, entry->pasid, addr))
return 1;
}
if (!amdgpu_sriov_vf(adev)) {
/*
* Issue a dummy read to wait for the status register to