Schedule a workqueue for VM fault handler on GMC V8.0 for SRIOV
support.
Signed-off-by: shaoyunl <shaoyun....@amd.com>
Signed-off-by: Xiangliang Yu <xiangliang...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 40 ++++++++++++++++++++++++++++++++++-
1 file changed, 39 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 0daac3a..e4a628c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1219,7 +1219,7 @@ static int gmc_v8_0_vm_fault_interrupt_state(struct
amdgpu_device *adev,
return 0;
}
-static int gmc_v8_0_process_interrupt(struct amdgpu_device *adev,
+static int gmc_v8_0_process_vm_fault(struct amdgpu_device *adev,
struct amdgpu_irq_src *source,
struct amdgpu_iv_entry *entry)
{
@@ -1250,6 +1250,44 @@ static int gmc_v8_0_process_interrupt(struct
amdgpu_device *adev,
return 0;
}
+struct gmc_vm_fault_work {
+ struct work_struct base;
+ struct amdgpu_device *adev;
+ struct amdgpu_irq_src *source;
+ struct amdgpu_iv_entry *entry;
+};
+
+static void gmc_v8_0_vm_fault_sched(struct work_struct *work)
+{
+ struct gmc_vm_fault_work *vm_work =
+ container_of(work, struct gmc_vm_fault_work, base);
+ struct amdgpu_device *adev = vm_work->adev;
+ struct amdgpu_irq_src *source = vm_work->source;
+ struct amdgpu_iv_entry *entry = vm_work->entry;
+
+ gmc_v8_0_process_vm_fault(adev, source, entry);
+ kfree(vm_work);
+}
+
+static int gmc_v8_0_process_interrupt(struct amdgpu_device *adev,
+ struct amdgpu_irq_src *source,
+ struct amdgpu_iv_entry *entry)
+{
+ struct gmc_vm_fault_work *work = NULL;
+
+ if (amdgpu_sriov_vf(adev)) {
+ work = kmalloc(sizeof(struct gmc_vm_fault_work), GFP_ATOMIC);
+ if (!work)
+ return -ENOMEM;
+ INIT_WORK(&work->base, gmc_v8_0_vm_fault_sched);
+ work->adev = adev;
+ work->source = source;
+ work->entry = entry;
+ return schedule_work(&work->base);
+ }
+ return gmc_v8_0_process_vm_fault(adev, source, entry);
+}
+
static void fiji_update_mc_medium_grain_clock_gating(struct amdgpu_device
*adev,
bool enable)
{
--
2.7.4
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