[PATCH 1/2] drm/amdgpu: add invalidate semaphore limit for SRIOV and picasso in gmc9

[Changfeng.Zhu]

From: changzhu <Changfeng.Zhu at amd.com>

It may fail to load guest driver in round 2 or cause Xstart problem
when using invalidate semaphore for SRIOV or picasso. So it needs avoid
using invalidate semaphore for SRIOV and picasso.

Change-Id: I806f8e99ec97be84e6aed0f5c499a53b1931b490
Signed-off-by: changzhu <Changfeng.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 44 +++++++++++++++------------
 1 file changed, 24 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 601667246a1c..efa55e9676be 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -412,6 +412,24 @@ static uint32_t gmc_v9_0_get_invalidate_req(unsigned int vmid,
 	return req;
 }
 
+/**
+ * gmc_v9_0_use_invalidate_semaphore - judge whether to use semaphore
+ *
+ * @adev: amdgpu_device pointer
+ * @vmhub: vmhub type
+ *
+ */
+static bool gmc_v9_0_use_invalidate_semaphore(struct amdgpu_device *adev,
+				       uint32_t vmhub)
+{
+	return ((vmhub == AMDGPU_MMHUB_0 ||
+		 vmhub == AMDGPU_MMHUB_1) &&
+		(!amdgpu_sriov_vf(adev)) &&
+		(!(adev->asic_type == CHIP_RAVEN &&
+		   adev->rev_id < 0x8 &&
+		   adev->pdev->device == 0x15d8)));
+}
+
 /*
  * GART
  * VMID 0 is the physical GPU addresses as used by the kernel.
@@ -431,6 +449,7 @@ static uint32_t gmc_v9_0_get_invalidate_req(unsigned int vmid,
 static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 					uint32_t vmhub, uint32_t flush_type)
 {
+	bool use_semaphore = gmc_v9_0_use_invalidate_semaphore(adev, vmhub);
 	const unsigned eng = 17;
 	u32 j, tmp;
 	struct amdgpu_vmhub *hub;
@@ -464,11 +483,7 @@ static void gmc_v9_0_flush_gpu_tlb(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) &&
-	    (!(adev->asic_type == CHIP_RAVEN &&
-	       adev->rev_id < 0x8 &&
-	       adev->pdev->device == 0x15d8))) {
+	if (use_semaphore) {
 		for (j = 0; j < adev->usec_timeout; j++) {
 			/* a read return value of 1 means semaphore acuqire */
 			tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng);
@@ -498,11 +513,7 @@ static void gmc_v9_0_flush_gpu_tlb(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) &&
-	    (!(adev->asic_type == CHIP_RAVEN &&
-	       adev->rev_id < 0x8 &&
-	       adev->pdev->device == 0x15d8)))
+	if (use_semaphore)
 		/*
 		 * add semaphore release after invalidation,
 		 * write with 0 means semaphore release
@@ -520,6 +531,7 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
 					    unsigned vmid, uint64_t pd_addr)
 {
+	bool use_semaphore = gmc_v9_0_use_invalidate_semaphore(ring->adev, ring->funcs->vmhub);
 	struct amdgpu_device *adev = ring->adev;
 	struct amdgpu_vmhub *hub = &adev->vmhub[ring->funcs->vmhub];
 	uint32_t req = gmc_v9_0_get_invalidate_req(vmid, 0);
@@ -533,11 +545,7 @@ static uint64_t gmc_v9_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) &&
-	    (!(adev->asic_type == CHIP_RAVEN &&
-	       adev->rev_id < 0x8 &&
-	       adev->pdev->device == 0x15d8)))
+	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);
@@ -553,11 +561,7 @@ static uint64_t gmc_v9_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) &&
-	    (!(adev->asic_type == CHIP_RAVEN &&
-	       adev->rev_id < 0x8 &&
-	       adev->pdev->device == 0x15d8)))
+	if (use_semaphore)
 		/*
 		 * add semaphore release after invalidation,
 		 * write with 0 means semaphore release
-- 
2.17.1