Revert "drm/amdgpu: rework lock handling for flush_tlb v2"

This reverts commit 7273ce5.
This patch causes a gpu_reset failure on navi3x.

Signed-off-by: Asher Song <[email protected]>

Author: Asher Song

Diff for: drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

@@ -624,13 +624,6 @@ void amdgpu_gmc_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 	    !adev->ib_pool_ready || amdgpu_in_reset(adev) ||
 	    !ring->sched.ready) {
 
-		/*
-		 * A GPU reset should flush all TLBs anyway, so no need to do
-		 * this while one is ongoing.
-		 */
-		if (!down_read_trylock(&adev->reset_domain->sem))
-			return;
-
 		if (adev->gmc.flush_tlb_needs_extra_type_2)
 			adev->gmc.gmc_funcs->flush_gpu_tlb(adev, vmid,
 							   vmhub, 2);
@@ -641,7 +634,6 @@ void amdgpu_gmc_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 
 		adev->gmc.gmc_funcs->flush_gpu_tlb(adev, vmid, vmhub,
 						   flush_type);
-		up_read(&adev->reset_domain->sem);
 		return;
 	}
 

Diff for: drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

@@ -51,6 +51,8 @@
 #include "athub_v2_0.h"
 #include "athub_v2_1.h"
 
+#include "amdgpu_reset.h"
+
 static int gmc_v10_0_ecc_interrupt_state(struct amdgpu_device *adev,
 					 struct amdgpu_irq_src *src,
 					 unsigned int type,

Diff for: drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

@@ -33,6 +33,7 @@
 #include "amdgpu_ucode.h"
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_gem.h"
+#include "amdgpu_reset.h"
 
 #include "bif/bif_4_1_d.h"
 #include "bif/bif_4_1_sh_mask.h"
@@ -430,6 +431,9 @@ static void gmc_v7_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 	u32 mask = 0x0;
 	int vmid;
 
+	if (!down_read_trylock(&adev->reset_domain->sem))
+		return;
+
 	for (vmid = 1; vmid < 16; vmid++) {
 		u32 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
 
@@ -440,6 +444,7 @@ static void gmc_v7_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 
 	WREG32(mmVM_INVALIDATE_REQUEST, mask);
 	RREG32(mmVM_INVALIDATE_RESPONSE);
+	up_read(&adev->reset_domain->sem);
 }
 
 /*

Diff for: drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

@@ -31,6 +31,7 @@
 #include "amdgpu_ucode.h"
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_gem.h"
+#include "amdgpu_reset.h"
 
 #include "gmc/gmc_8_1_d.h"
 #include "gmc/gmc_8_1_sh_mask.h"
@@ -625,6 +626,9 @@ static void gmc_v8_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 	u32 mask = 0x0;
 	int vmid;
 
+	if (!down_read_trylock(&adev->reset_domain->sem))
+		return;
+
 	for (vmid = 1; vmid < 16; vmid++) {
 		u32 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
 
@@ -635,6 +639,7 @@ static void gmc_v8_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 
 	WREG32(mmVM_INVALIDATE_REQUEST, mask);
 	RREG32(mmVM_INVALIDATE_RESPONSE);
+	up_read(&adev->reset_domain->sem);
 }
 
 /*

Diff for: drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -65,6 +65,8 @@
 #include "amdgpu_ras.h"
 #include "amdgpu_xgmi.h"
 
+#include "amdgpu_reset.h"
+
 /* add these here since we already include dce12 headers and these are for DCN */
 #define mmHUBP0_DCSURF_PRI_VIEWPORT_DIMENSION                                                          0x055d
 #define mmHUBP0_DCSURF_PRI_VIEWPORT_DIMENSION_BASE_IDX                                                 2