[PATCH 4/4] amdgpu: make vamgr per device v2

[Jammy Zhou]

Each device can have its own vamgr, so make it per device now.
This can fix the failure with multiple GPUs used in one single
process.

v2: rebase

Signed-off-by: Jammy Zhou <Jammy.Zhou at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
---
 amdgpu/amdgpu_device.c   | 13 +++++++++++--
 amdgpu/amdgpu_internal.h |  5 -----
 amdgpu/amdgpu_vamgr.c    | 24 +-----------------------
 3 files changed, 12 insertions(+), 30 deletions(-)

diff --git a/amdgpu/amdgpu_device.c b/amdgpu/amdgpu_device.c
index 0ef1d31..d5f65e5 100644
--- a/amdgpu/amdgpu_device.c
+++ b/amdgpu/amdgpu_device.c
@@ -131,7 +131,8 @@ static int amdgpu_get_auth(int fd, int *auth)
 
 static void amdgpu_device_free_internal(amdgpu_device_handle dev)
 {
-	amdgpu_vamgr_reference(&dev->vamgr, NULL);
+	amdgpu_vamgr_deinit(dev->vamgr);
+	free(dev->vamgr);
 	util_hash_table_destroy(dev->bo_flink_names);
 	util_hash_table_destroy(dev->bo_handles);
 	pthread_mutex_destroy(&dev->bo_table_mutex);
@@ -252,7 +253,13 @@ int amdgpu_device_initialize(int fd,
 	if (r)
 		goto cleanup;
 
-	dev->vamgr = amdgpu_vamgr_get_global(dev);
+	dev->vamgr = calloc(1, sizeof(struct amdgpu_bo_va_mgr));
+	if (dev->vamgr == NULL)
+		goto cleanup;
+
+	amdgpu_vamgr_init(dev->vamgr, dev->dev_info.virtual_address_offset,
+			  dev->dev_info.virtual_address_max,
+			  dev->dev_info.virtual_address_alignment);
 
 	max = MIN2(dev->dev_info.virtual_address_max, 0xffffffff);
 	start = amdgpu_vamgr_find_va(dev->vamgr,
@@ -279,6 +286,8 @@ free_va:
 	r = -ENOMEM;
 	amdgpu_vamgr_free_va(dev->vamgr, start,
 			     max - dev->dev_info.virtual_address_offset);
+	amdgpu_vamgr_deinit(dev->vamgr);
+	free(dev->vamgr);
 
 cleanup:
 	if (dev->fd >= 0)
diff --git a/amdgpu/amdgpu_internal.h b/amdgpu/amdgpu_internal.h
index ca155be..cb06dbf 100644
--- a/amdgpu/amdgpu_internal.h
+++ b/amdgpu/amdgpu_internal.h
@@ -51,7 +51,6 @@ struct amdgpu_bo_va_hole {
 };
 
 struct amdgpu_bo_va_mgr {
-	atomic_t refcount;
 	/* the start virtual address */
 	uint64_t va_offset;
 	uint64_t va_max;
@@ -124,10 +123,6 @@ struct amdgpu_context {
 
 drm_private void amdgpu_bo_free_internal(amdgpu_bo_handle bo);
 
-drm_private struct amdgpu_bo_va_mgr* amdgpu_vamgr_get_global(struct amdgpu_device *dev);
-
-drm_private void amdgpu_vamgr_reference(struct amdgpu_bo_va_mgr **dst, struct amdgpu_bo_va_mgr *src);
-
 drm_private void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
 		       uint64_t max, uint64_t alignment);
 
diff --git a/amdgpu/amdgpu_vamgr.c b/amdgpu/amdgpu_vamgr.c
index 698826d..659e6c8 100644
--- a/amdgpu/amdgpu_vamgr.c
+++ b/amdgpu/amdgpu_vamgr.c
@@ -33,8 +33,6 @@
 #include "amdgpu_internal.h"
 #include "util_math.h"
 
-static struct amdgpu_bo_va_mgr vamgr = {{0}};
-
 int amdgpu_va_range_query(amdgpu_device_handle dev,
 			  enum amdgpu_gpu_va_range type, uint64_t *start, uint64_t *end)
 {
@@ -67,26 +65,6 @@ drm_private void amdgpu_vamgr_deinit(struct amdgpu_bo_va_mgr *mgr)
 	pthread_mutex_destroy(&mgr->bo_va_mutex);
 }
 
-drm_private struct amdgpu_bo_va_mgr * amdgpu_vamgr_get_global(struct amdgpu_device *dev)
-{
-	int ref;
-	ref = atomic_inc_return(&vamgr.refcount);
-
-	if (ref == 1)
-		amdgpu_vamgr_init(&vamgr, dev->dev_info.virtual_address_offset,
-				  dev->dev_info.virtual_address_max,
-				  dev->dev_info.virtual_address_alignment);
-	return &vamgr;
-}
-
-drm_private void amdgpu_vamgr_reference(struct amdgpu_bo_va_mgr **dst,
-				struct amdgpu_bo_va_mgr *src)
-{
-	if (update_references(&(*dst)->refcount, NULL))
-		amdgpu_vamgr_deinit(*dst);
-	*dst = src;
-}
-
 drm_private uint64_t amdgpu_vamgr_find_va(struct amdgpu_bo_va_mgr *mgr, uint64_t size,
 				uint64_t alignment, uint64_t base_required)
 {
@@ -102,7 +80,7 @@ drm_private uint64_t amdgpu_vamgr_find_va(struct amdgpu_bo_va_mgr *mgr, uint64_t
 	pthread_mutex_lock(&mgr->bo_va_mutex);
 	/* TODO: using more appropriate way to track the holes */
 	/* first look for a hole */
-	LIST_FOR_EACH_ENTRY_SAFE(hole, n, &vamgr.va_holes, list) {
+	LIST_FOR_EACH_ENTRY_SAFE(hole, n, &mgr->va_holes, list) {
 		if (base_required) {
 			if(hole->offset > base_required ||
 				(hole->offset + hole->size) < (base_required + size))
-- 
1.9.1