Avoid the forward define, fix coding style, add documentation.
No functional change.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 169 +++++++++++---------
1 file changed, 90 insertions(+), 79 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
index 540c01052b21..8860545344c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -24,7 +24,8 @@
#include "amdgpu.h"
-static inline struct amdgpu_gtt_mgr *to_gtt_mgr(struct ttm_resource_manager *man)
+static inline struct amdgpu_gtt_mgr *
+to_gtt_mgr(struct ttm_resource_manager *man)
{
return container_of(man, struct amdgpu_gtt_mgr, manager);
}
@@ -43,12 +44,14 @@ struct amdgpu_gtt_node {
* the GTT block, in bytes
*/
static ssize_t amdgpu_mem_info_gtt_total_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
- struct ttm_resource_manager *man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
+ struct ttm_resource_manager *man;
+ man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
return sysfs_emit(buf, "%llu\n", man->size * PAGE_SIZE);
}
@@ -61,12 +64,14 @@ static ssize_t amdgpu_mem_info_gtt_total_show(struct device *dev,
* size of the GTT block, in bytes
*/
static ssize_t amdgpu_mem_info_gtt_used_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
- struct ttm_resource_manager *man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
+ struct ttm_resource_manager *man;
+ man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
return sysfs_emit(buf, "%llu\n", amdgpu_gtt_mgr_usage(man));
}
@@ -75,80 +80,6 @@ static DEVICE_ATTR(mem_info_gtt_total, S_IRUGO,
static DEVICE_ATTR(mem_info_gtt_used, S_IRUGO,
amdgpu_mem_info_gtt_used_show, NULL);
-static const struct ttm_resource_manager_func amdgpu_gtt_mgr_func;
-/**
- * amdgpu_gtt_mgr_init - init GTT manager and DRM MM
- *
- * @adev: amdgpu_device pointer
- * @gtt_size: maximum size of GTT
- *
- * Allocate and initialize the GTT manager.
- */
-int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size)
-{
- struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr;
- struct ttm_resource_manager *man = &mgr->manager;
- uint64_t start, size;
- int ret;
-
- man->use_tt = true;
- man->func = &amdgpu_gtt_mgr_func;
-
- ttm_resource_manager_init(man, gtt_size >> PAGE_SHIFT);
-
- start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;
- size = (adev->gmc.gart_size >> PAGE_SHIFT) - start;
- drm_mm_init(&mgr->mm, start, size);
- spin_lock_init(&mgr->lock);
- atomic64_set(&mgr->available, gtt_size >> PAGE_SHIFT);
-
- ret = device_create_file(adev->dev, &dev_attr_mem_info_gtt_total);
- if (ret) {
- DRM_ERROR("Failed to create device file mem_info_gtt_total\n");
- return ret;
- }
- ret = device_create_file(adev->dev, &dev_attr_mem_info_gtt_used);
- if (ret) {
- DRM_ERROR("Failed to create device file mem_info_gtt_used\n");
- return ret;
- }
-
- ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, &mgr->manager);
- ttm_resource_manager_set_used(man, true);
- return 0;
-}
-
-/**
- * amdgpu_gtt_mgr_fini - free and destroy GTT manager
- *
- * @adev: amdgpu_device pointer
- *
- * Destroy and free the GTT manager, returns -EBUSY if ranges are still
- * allocated inside it.
- */
-void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev)
-{
- struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr;
- struct ttm_resource_manager *man = &mgr->manager;
- int ret;
-
- ttm_resource_manager_set_used(man, false);
-
- ret = ttm_resource_manager_evict_all(&adev->mman.bdev, man);
- if (ret)
- return;
-
- spin_lock(&mgr->lock);
- drm_mm_takedown(&mgr->mm);
- spin_unlock(&mgr->lock);
-
- device_remove_file(adev->dev, &dev_attr_mem_info_gtt_total);
- device_remove_file(adev->dev, &dev_attr_mem_info_gtt_used);
-
- ttm_resource_manager_cleanup(man);
- ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, NULL);
-}
-
/**
* amdgpu_gtt_mgr_has_gart_addr - Check if mem has address space
*
@@ -265,6 +196,13 @@ uint64_t amdgpu_gtt_mgr_usage(struct ttm_resource_manager *man)
return (result > 0 ? result : 0) * PAGE_SIZE;
}
+/**
+ * amdgpu_gtt_mgr_recover - re-init gart
+ *
+ * @man: TTM memory type manager
+ *
+ * Re-init the gart for each known BO in the GTT.
+ */
int amdgpu_gtt_mgr_recover(struct ttm_resource_manager *man)
{
struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man);
@@ -311,3 +249,76 @@ static const struct ttm_resource_manager_func amdgpu_gtt_mgr_func = {
.free = amdgpu_gtt_mgr_del,
.debug = amdgpu_gtt_mgr_debug
};
+
+/**
+ * amdgpu_gtt_mgr_init - init GTT manager and DRM MM
+ *
+ * @adev: amdgpu_device pointer
+ * @gtt_size: maximum size of GTT
+ *
+ * Allocate and initialize the GTT manager.
+ */
+int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size)
+{
+ struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr;
+ struct ttm_resource_manager *man = &mgr->manager;
+ uint64_t start, size;
+ int ret;
+
+ man->use_tt = true;
+ man->func = &amdgpu_gtt_mgr_func;
+
+ ttm_resource_manager_init(man, gtt_size >> PAGE_SHIFT);
+
+ start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;
+ size = (adev->gmc.gart_size >> PAGE_SHIFT) - start;
+ drm_mm_init(&mgr->mm, start, size);
+ spin_lock_init(&mgr->lock);
+ atomic64_set(&mgr->available, gtt_size >> PAGE_SHIFT);
+
+ ret = device_create_file(adev->dev, &dev_attr_mem_info_gtt_total);
+ if (ret) {
+ DRM_ERROR("Failed to create device file mem_info_gtt_total\n");
+ return ret;
+ }
+ ret = device_create_file(adev->dev, &dev_attr_mem_info_gtt_used);
+ if (ret) {
+ DRM_ERROR("Failed to create device file mem_info_gtt_used\n");
+ return ret;
+ }
+
+ ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, &mgr->manager);
+ ttm_resource_manager_set_used(man, true);
+ return 0;
+}
+
+/**
+ * amdgpu_gtt_mgr_fini - free and destroy GTT manager
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Destroy and free the GTT manager, returns -EBUSY if ranges are still
+ * allocated inside it.
+ */
+void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev)
+{
+ struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr;
+ struct ttm_resource_manager *man = &mgr->manager;
+ int ret;
+
+ ttm_resource_manager_set_used(man, false);
+
+ ret = ttm_resource_manager_evict_all(&adev->mman.bdev, man);
+ if (ret)
+ return;
+
+ spin_lock(&mgr->lock);
+ drm_mm_takedown(&mgr->mm);
+ spin_unlock(&mgr->lock);
+
+ device_remove_file(adev->dev, &dev_attr_mem_info_gtt_total);
+ device_remove_file(adev->dev, &dev_attr_mem_info_gtt_used);
+
+ ttm_resource_manager_cleanup(man);
+ ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, NULL);
+}
--
2.25.1
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