From: changzhu <changfeng....@amd.com>
It may fail to load guest driver in round 2 when using invalidate
semaphore for SRIOV. So it needs to avoid using invalidate semaphore
for SRIOV.
Change-Id: I2719671cf86a1755b05c5f2ac7420a901abbe916
Signed-off-by: changzhu <changfeng....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 29 +++++++++++++++++++-------
1 file changed, 21 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 381bb709f021..5c5ced29fde2 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -218,6 +218,21 @@ static uint32_t gmc_v10_0_get_invalidate_req(unsigned int
vmid,
return req;
}
+/**
+ * gmc_v10_0_use_invalidate_semaphore - judge whether to use semaphore
+ *
+ * @adev: amdgpu_device pointer
+ * @vmhub: vmhub type
+ *
+ */
+static bool gmc_v10_0_use_invalidate_semaphore(struct amdgpu_device *adev,
+ uint32_t vmhub)
+{
+ return ((vmhub == AMDGPU_MMHUB_0 ||
+ vmhub == AMDGPU_MMHUB_1) &&
+ (!amdgpu_sriov_vf(adev)));
+}
+
/*
* GART
* VMID 0 is the physical GPU addresses as used by the kernel.
@@ -228,6 +243,7 @@ static uint32_t gmc_v10_0_get_invalidate_req(unsigned int
vmid,
static void gmc_v10_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid,
unsigned int vmhub, uint32_t flush_type)
{
+ bool use_semaphore = gmc_v10_0_use_invalidate_semaphore(adev, vmhub);
struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
u32 tmp = gmc_v10_0_get_invalidate_req(vmid, flush_type);
/* Use register 17 for GART */
@@ -243,8 +259,7 @@ static void gmc_v10_0_flush_vm_hub(struct amdgpu_device
*adev, uint32_t vmid,
*/
/* TODO: It needs to continue working on debugging with semaphore for
GFXHUB as well. */
- if (vmhub == AMDGPU_MMHUB_0 ||
- vmhub == AMDGPU_MMHUB_1) {
+ if (use_semaphore) {
for (i = 0; i < adev->usec_timeout; i++) {
/* a read return value of 1 means semaphore acuqire */
tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng);
@@ -277,8 +292,7 @@ static void gmc_v10_0_flush_vm_hub(struct amdgpu_device
*adev, uint32_t vmid,
}
/* TODO: It needs to continue working on debugging with semaphore for
GFXHUB as well. */
- if (vmhub == AMDGPU_MMHUB_0 ||
- vmhub == AMDGPU_MMHUB_1)
+ if (use_semaphore)
/*
* add semaphore release after invalidation,
* write with 0 means semaphore release
@@ -369,6 +383,7 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device
*adev, uint32_t vmid,
static uint64_t gmc_v10_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
unsigned vmid, uint64_t pd_addr)
{
+ bool use_semaphore = gmc_v10_0_use_invalidate_semaphore(ring->adev,
ring->funcs->vmhub);
struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
uint32_t req = gmc_v10_0_get_invalidate_req(vmid, 0);
unsigned eng = ring->vm_inv_eng;
@@ -381,8 +396,7 @@ static uint64_t gmc_v10_0_emit_flush_gpu_tlb(struct
amdgpu_ring *ring,
*/
/* TODO: It needs to continue working on debugging with semaphore for
GFXHUB as well. */
- if (ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
- ring->funcs->vmhub == AMDGPU_MMHUB_1)
+ if (use_semaphore)
/* a read return value of 1 means semaphore acuqire */
amdgpu_ring_emit_reg_wait(ring,
hub->vm_inv_eng0_sem + eng, 0x1, 0x1);
@@ -398,8 +412,7 @@ static uint64_t gmc_v10_0_emit_flush_gpu_tlb(struct
amdgpu_ring *ring,
req, 1 << vmid);
/* TODO: It needs to continue working on debugging with semaphore for
GFXHUB as well. */
- if (ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
- ring->funcs->vmhub == AMDGPU_MMHUB_1)
+ if (use_semaphore)
/*
* add semaphore release after invalidation,
* write with 0 means semaphore release
--
2.17.1
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