drm/amdgpu: Relocate kgd2kfd function declaration

Since amdkfd is merged into amdgpu module and amdgpu can access amdkfd
directly, move declaration of kgd2kfd functions from kfd_priv.h to
amdgpu_amdkfd.h

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

@@ -619,4 +619,47 @@ struct kfd2kgd_calls *amdgpu_amdkfd_gfx_9_0_get_functions(void)
 {
 	return NULL;
 }
+
+struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
+			      const struct kfd2kgd_calls *f2g)
+{
+	return NULL;
+}
+
+bool kgd2kfd_device_init(struct kfd_dev *kfd,
+			 const struct kgd2kfd_shared_resources *gpu_resources)
+{
+	return false;
+}
+
+void kgd2kfd_device_exit(struct kfd_dev *kfd)
+{
+}
+
+void kgd2kfd_exit(void)
+{
+}
+
+void kgd2kfd_suspend(struct kfd_dev *kfd)
+{
+}
+
+int kgd2kfd_resume(struct kfd_dev *kfd)
+{
+	return 0;
+}
+
+int kgd2kfd_pre_reset(struct kfd_dev *kfd)
+{
+	return 0;
+}
+
+int kgd2kfd_post_reset(struct kfd_dev *kfd)
+{
+	return 0;
+}
+
+void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
+{
+}
 #endif

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

@@ -33,7 +33,6 @@
 #include "amdgpu_sync.h"
 #include "amdgpu_vm.h"
 
-extern const struct kgd2kfd_calls *kgd2kfd;
 extern uint64_t amdgpu_amdkfd_total_mem_size;
 
 struct amdgpu_device;
@@ -214,4 +213,23 @@ int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
 
+/* KGD2KFD callbacks */
+int kgd2kfd_init(unsigned interface_version,
+		 const struct kgd2kfd_calls **g2f);
+void kgd2kfd_exit(void);
+struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
+			      const struct kfd2kgd_calls *f2g);
+bool kgd2kfd_device_init(struct kfd_dev *kfd,
+			 const struct kgd2kfd_shared_resources *gpu_resources);
+void kgd2kfd_device_exit(struct kfd_dev *kfd);
+void kgd2kfd_suspend(struct kfd_dev *kfd);
+int kgd2kfd_resume(struct kfd_dev *kfd);
+int kgd2kfd_pre_reset(struct kfd_dev *kfd);
+int kgd2kfd_post_reset(struct kfd_dev *kfd);
+void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
+int kgd2kfd_quiesce_mm(struct mm_struct *mm);
+int kgd2kfd_resume_mm(struct mm_struct *mm);
+int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
+					       struct dma_fence *fence);
+
 #endif /* AMDGPU_AMDKFD_H_INCLUDED */

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c

@@ -31,6 +31,7 @@
 
 static const struct dma_fence_ops amdkfd_fence_ops;
 static atomic_t fence_seq = ATOMIC_INIT(0);
+extern const struct kgd2kfd_calls *kgd2kfd;
 
 /* Eviction Fence
  * Fence helper functions to deal with KFD memory eviction.

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

@@ -44,6 +44,8 @@
  */
 #define AMDGPU_USERPTR_RESTORE_DELAY_MS 1
 
+extern const struct kgd2kfd_calls *kgd2kfd;
+
 /* Impose limit on how much memory KFD can use */
 static struct {
 	uint64_t max_system_mem_limit;

drivers/gpu/drm/amd/amdkfd/kfd_module.c

@@ -23,6 +23,7 @@
 #include <linux/sched.h>
 #include <linux/device.h>
 #include "kfd_priv.h"
+#include "amdgpu_amdkfd.h"
 
 static const struct kgd2kfd_calls kgd2kfd = {
 	.exit		= kgd2kfd_exit,
@@ -104,7 +105,6 @@ int kgd2kfd_init(unsigned int interface_version,
 
 	return 0;
 }
-EXPORT_SYMBOL(kgd2kfd_init);
 
 void kgd2kfd_exit(void)
 {

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

@@ -266,14 +266,6 @@ struct kfd_dev {
 	bool pci_atomic_requested;
 };
 
-/* KGD2KFD callbacks */
-void kgd2kfd_exit(void);
-struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd,
-			struct pci_dev *pdev, const struct kfd2kgd_calls *f2g);
-bool kgd2kfd_device_init(struct kfd_dev *kfd,
-			const struct kgd2kfd_shared_resources *gpu_resources);
-void kgd2kfd_device_exit(struct kfd_dev *kfd);
-
 enum kfd_mempool {
 	KFD_MEMPOOL_SYSTEM_CACHEABLE = 1,
 	KFD_MEMPOOL_SYSTEM_WRITECOMBINE = 2,
@@ -541,11 +533,6 @@ struct qcm_process_device {
 /* Approx. time before evicting the process again */
 #define PROCESS_ACTIVE_TIME_MS 10
 
-int kgd2kfd_quiesce_mm(struct mm_struct *mm);
-int kgd2kfd_resume_mm(struct mm_struct *mm);
-int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
-					       struct dma_fence *fence);
-
 /* 8 byte handle containing GPU ID in the most significant 4 bytes and
  * idr_handle in the least significant 4 bytes
  */
@@ -800,20 +787,11 @@ int kfd_numa_node_to_apic_id(int numa_node_id);
 /* Interrupts */
 int kfd_interrupt_init(struct kfd_dev *dev);
 void kfd_interrupt_exit(struct kfd_dev *dev);
-void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
 bool enqueue_ih_ring_entry(struct kfd_dev *kfd,	const void *ih_ring_entry);
 bool interrupt_is_wanted(struct kfd_dev *dev,
 				const uint32_t *ih_ring_entry,
 				uint32_t *patched_ihre, bool *flag);
 
-/* Power Management */
-void kgd2kfd_suspend(struct kfd_dev *kfd);
-int kgd2kfd_resume(struct kfd_dev *kfd);
-
-/* GPU reset */
-int kgd2kfd_pre_reset(struct kfd_dev *kfd);
-int kgd2kfd_post_reset(struct kfd_dev *kfd);
-
 /* amdkfd Apertures */
 int kfd_init_apertures(struct kfd_process *process);
 

drivers/gpu/drm/amd/include/kgd_kfd_interface.h

@@ -379,7 +379,4 @@ struct kgd2kfd_calls {
 	int  (*post_reset)(struct kfd_dev *kfd);
 };
 
-int kgd2kfd_init(unsigned interface_version,
-		const struct kgd2kfd_calls **g2f);
-
 #endif	/* KGD_KFD_INTERFACE_H_INCLUDED */