drm/radeon: remove vm_unbind

It actually isn't very useful.
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>

drivers/gpu/drm/radeon/ni.c

@@ -1509,17 +1509,6 @@ int cayman_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm, int id)
 	return 0;
 }
 
-void cayman_vm_unbind(struct radeon_device *rdev, struct radeon_vm *vm)
-{
-	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR + (vm->id << 2), 0);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR + (vm->id << 2), 0);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2), 0);
-	/* flush hdp cache */
-	WREG32(HDP_MEM_COHERENCY_FLUSH_CNTL, 0x1);
-	/* bits 0-7 are the VM contexts0-7 */
-	WREG32(VM_INVALIDATE_REQUEST, 1 << vm->id);
-}
-
 void cayman_vm_tlb_flush(struct radeon_device *rdev, struct radeon_vm *vm)
 {
 	if (vm->id == -1)

drivers/gpu/drm/radeon/radeon.h

@@ -1116,7 +1116,6 @@ struct radeon_asic {
 		int (*init)(struct radeon_device *rdev);
 		void (*fini)(struct radeon_device *rdev);
 		int (*bind)(struct radeon_device *rdev, struct radeon_vm *vm, int id);
-		void (*unbind)(struct radeon_device *rdev, struct radeon_vm *vm);
 		void (*tlb_flush)(struct radeon_device *rdev, struct radeon_vm *vm);
 		uint32_t (*page_flags)(struct radeon_device *rdev,
 				       struct radeon_vm *vm,
@@ -1734,7 +1733,6 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v);
 #define radeon_asic_vm_init(rdev) (rdev)->asic->vm.init((rdev))
 #define radeon_asic_vm_fini(rdev) (rdev)->asic->vm.fini((rdev))
 #define radeon_asic_vm_bind(rdev, v, id) (rdev)->asic->vm.bind((rdev), (v), (id))
-#define radeon_asic_vm_unbind(rdev, v) (rdev)->asic->vm.unbind((rdev), (v))
 #define radeon_asic_vm_tlb_flush(rdev, v) (rdev)->asic->vm.tlb_flush((rdev), (v))
 #define radeon_asic_vm_page_flags(rdev, v, flags) (rdev)->asic->vm.page_flags((rdev), (v), (flags))
 #define radeon_asic_vm_set_page(rdev, v, pfn, addr, flags) (rdev)->asic->vm.set_page((rdev), (v), (pfn), (addr), (flags))

drivers/gpu/drm/radeon/radeon_asic.c

@@ -1376,7 +1376,6 @@ static struct radeon_asic cayman_asic = {
 		.init = &cayman_vm_init,
 		.fini = &cayman_vm_fini,
 		.bind = &cayman_vm_bind,
-		.unbind = &cayman_vm_unbind,
 		.tlb_flush = &cayman_vm_tlb_flush,
 		.page_flags = &cayman_vm_page_flags,
 		.set_page = &cayman_vm_set_page,
@@ -1480,7 +1479,6 @@ static struct radeon_asic trinity_asic = {
 		.init = &cayman_vm_init,
 		.fini = &cayman_vm_fini,
 		.bind = &cayman_vm_bind,
-		.unbind = &cayman_vm_unbind,
 		.tlb_flush = &cayman_vm_tlb_flush,
 		.page_flags = &cayman_vm_page_flags,
 		.set_page = &cayman_vm_set_page,
@@ -1584,7 +1582,6 @@ static struct radeon_asic si_asic = {
 		.init = &si_vm_init,
 		.fini = &si_vm_fini,
 		.bind = &si_vm_bind,
-		.unbind = &si_vm_unbind,
 		.tlb_flush = &si_vm_tlb_flush,
 		.page_flags = &cayman_vm_page_flags,
 		.set_page = &cayman_vm_set_page,

drivers/gpu/drm/radeon/radeon_gart.c

@@ -522,7 +522,6 @@ static void radeon_vm_unbind_locked(struct radeon_device *rdev,
 	radeon_fence_unref(&vm->fence);
 
 	/* hw unbind */
-	radeon_asic_vm_unbind(rdev, vm);
 	rdev->vm_manager.use_bitmap &= ~(1 << vm->id);
 	list_del_init(&vm->list);
 	vm->id = -1;

drivers/gpu/drm/radeon/si.c

@@ -2803,18 +2803,6 @@ int si_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm, int id)
 	return 0;
 }
 
-void si_vm_unbind(struct radeon_device *rdev, struct radeon_vm *vm)
-{
-	if (vm->id < 8)
-		WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2), 0);
-	else
-		WREG32(VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2), 0);
-	/* flush hdp cache */
-	WREG32(HDP_MEM_COHERENCY_FLUSH_CNTL, 0x1);
-	/* bits 0-15 are the VM contexts0-15 */
-	WREG32(VM_INVALIDATE_REQUEST, 1 << vm->id);
-}
-
 void si_vm_tlb_flush(struct radeon_device *rdev, struct radeon_vm *vm)
 {
 	if (vm->id == -1)