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Diffstat (limited to 'include/drm/ttm/ttm_bo_driver.h')
-rw-r--r--include/drm/ttm/ttm_bo_driver.h94
1 files changed, 68 insertions, 26 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index a68829db381a..e8cd6d20aed2 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -32,6 +32,7 @@
#include "ttm/ttm_bo_api.h"
#include "ttm/ttm_memory.h"
+#include "ttm/ttm_module.h"
#include "drm_mm.h"
#include "linux/workqueue.h"
#include "linux/fs.h"
@@ -161,7 +162,7 @@ struct ttm_tt {
long last_lomem_page;
uint32_t page_flags;
unsigned long num_pages;
- struct ttm_bo_device *bdev;
+ struct ttm_bo_global *glob;
struct ttm_backend *be;
struct task_struct *tsk;
unsigned long start;
@@ -364,24 +365,73 @@ struct ttm_bo_driver {
void (*fault_reserve_notify)(struct ttm_buffer_object *bo);
};
-#define TTM_NUM_MEM_TYPES 8
+/**
+ * struct ttm_bo_global_ref - Argument to initialize a struct ttm_bo_global.
+ */
+
+struct ttm_bo_global_ref {
+ struct ttm_global_reference ref;
+ struct ttm_mem_global *mem_glob;
+};
-#define TTM_BO_PRIV_FLAG_MOVING 0 /* Buffer object is moving and needs
- idling before CPU mapping */
-#define TTM_BO_PRIV_FLAG_MAX 1
/**
- * struct ttm_bo_device - Buffer object driver device-specific data.
+ * struct ttm_bo_global - Buffer object driver global data.
*
* @mem_glob: Pointer to a struct ttm_mem_global object for accounting.
- * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver.
- * @count: Current number of buffer object.
- * @pages: Current number of pinned pages.
* @dummy_read_page: Pointer to a dummy page used for mapping requests
* of unpopulated pages.
- * @shrink: A shrink callback object used for buffre object swap.
+ * @shrink: A shrink callback object used for buffer object swap.
* @ttm_bo_extra_size: Extra size (sizeof(struct ttm_buffer_object) excluded)
* used by a buffer object. This is excluding page arrays and backing pages.
* @ttm_bo_size: This is @ttm_bo_extra_size + sizeof(struct ttm_buffer_object).
+ * @device_list_mutex: Mutex protecting the device list.
+ * This mutex is held while traversing the device list for pm options.
+ * @lru_lock: Spinlock protecting the bo subsystem lru lists.
+ * @device_list: List of buffer object devices.
+ * @swap_lru: Lru list of buffer objects used for swapping.
+ */
+
+struct ttm_bo_global {
+
+ /**
+ * Constant after init.
+ */
+
+ struct kobject kobj;
+ struct ttm_mem_global *mem_glob;
+ struct page *dummy_read_page;
+ struct ttm_mem_shrink shrink;
+ size_t ttm_bo_extra_size;
+ size_t ttm_bo_size;
+ struct mutex device_list_mutex;
+ spinlock_t lru_lock;
+
+ /**
+ * Protected by device_list_mutex.
+ */
+ struct list_head device_list;
+
+ /**
+ * Protected by the lru_lock.
+ */
+ struct list_head swap_lru;
+
+ /**
+ * Internal protection.
+ */
+ atomic_t bo_count;
+};
+
+
+#define TTM_NUM_MEM_TYPES 8
+
+#define TTM_BO_PRIV_FLAG_MOVING 0 /* Buffer object is moving and needs
+ idling before CPU mapping */
+#define TTM_BO_PRIV_FLAG_MAX 1
+/**
+ * struct ttm_bo_device - Buffer object driver device-specific data.
+ *
+ * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver.
* @man: An array of mem_type_managers.
* @addr_space_mm: Range manager for the device address space.
* lru_lock: Spinlock that protects the buffer+device lru lists and
@@ -399,32 +449,21 @@ struct ttm_bo_device {
/*
* Constant after bo device init / atomic.
*/
-
- struct ttm_mem_global *mem_glob;
+ struct list_head device_list;
+ struct ttm_bo_global *glob;
struct ttm_bo_driver *driver;
- struct page *dummy_read_page;
- struct ttm_mem_shrink shrink;
-
- size_t ttm_bo_extra_size;
- size_t ttm_bo_size;
-
rwlock_t vm_lock;
+ struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
/*
* Protected by the vm lock.
*/
- struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
struct rb_root addr_space_rb;
struct drm_mm addr_space_mm;
/*
- * Might want to change this to one lock per manager.
- */
- spinlock_t lru_lock;
- /*
- * Protected by the lru lock.
+ * Protected by the global:lru lock.
*/
struct list_head ddestroy;
- struct list_head swap_lru;
/*
* Protected by load / firstopen / lastclose /unload sync.
@@ -640,6 +679,9 @@ extern int ttm_bo_pci_offset(struct ttm_bo_device *bdev,
unsigned long *bus_offset,
unsigned long *bus_size);
+extern void ttm_bo_global_release(struct ttm_global_reference *ref);
+extern int ttm_bo_global_init(struct ttm_global_reference *ref);
+
extern int ttm_bo_device_release(struct ttm_bo_device *bdev);
/**
@@ -657,7 +699,7 @@ extern int ttm_bo_device_release(struct ttm_bo_device *bdev);
* !0: Failure.
*/
extern int ttm_bo_device_init(struct ttm_bo_device *bdev,
- struct ttm_mem_global *mem_glob,
+ struct ttm_bo_global *glob,
struct ttm_bo_driver *driver,
uint64_t file_page_offset, bool need_dma32);