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-rw-r--r--linux-core/drmP.h147
1 files changed, 147 insertions, 0 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 6cbb810f..81ca6aec 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -154,6 +154,8 @@
#define DRM_MEM_CTXLIST 21
#define DRM_MEM_MM 22
#define DRM_MEM_HASHTAB 23
+#define DRM_MEM_OBJECTS 24
+
#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
#define DRM_MAP_HASH_OFFSET 0x10000000
@@ -387,6 +389,19 @@ typedef struct drm_buf_entry {
drm_freelist_t freelist;
} drm_buf_entry_t;
+/*
+ * This should be small enough to allow the use of kmalloc for hash tables
+ * instead of vmalloc.
+ */
+
+#define DRM_FILE_HASH_ORDER 8
+typedef enum{
+ _DRM_REF_USE=0,
+ _DRM_REF_TYPE1,
+ _DRM_NO_REF_TYPES
+} drm_ref_t;
+
+
/** File private data */
typedef struct drm_file {
int authenticated;
@@ -401,6 +416,18 @@ typedef struct drm_file {
struct drm_head *head;
int remove_auth_on_close;
unsigned long lock_count;
+
+ /*
+ * The user object hash table is global and resides in the
+ * drm_device structure. We protect the lists and hash tables with the
+ * device struct_mutex. A bit coarse-grained but probably the best
+ * option.
+ */
+
+ struct list_head refd_objects;
+ struct list_head user_objects;
+
+ drm_open_hash_t refd_object_hash[_DRM_NO_REF_TYPES];
void *driver_priv;
} drm_file_t;
@@ -564,6 +591,7 @@ typedef struct drm_mm {
* a family of cards. There will one drm_device for each card present
* in this family
*/
+
struct drm_device;
struct drm_driver {
int (*load) (struct drm_device *, unsigned long flags);
@@ -638,6 +666,7 @@ typedef struct drm_head {
struct class_device *dev_class;
} drm_head_t;
+
/**
* DRM device structure. This structure represent a complete card that
* may contain multiple heads.
@@ -685,6 +714,7 @@ typedef struct drm_device {
drm_map_list_t *maplist; /**< Linked list of regions */
int map_count; /**< Number of mappable regions */
drm_open_hash_t map_hash; /**< User token hash table for maps */
+ drm_open_hash_t object_hash; /**< User token hash table for objects */
/** \name Context handle management */
/*@{ */
@@ -809,6 +839,63 @@ static inline int drm_mtrr_del(int handle, unsigned long offset,
#define drm_core_has_MTRR(dev) (0)
#endif
+/*
+ * User space objects and their references.
+ */
+
+#define drm_user_object_entry(_ptr, _type, _member) container_of(_ptr, _type, _member)
+
+typedef enum {
+ drm_fence_type,
+ drm_buffer_type
+
+ /*
+ * Add other user space object types here.
+ */
+
+} drm_object_type_t;
+
+
+
+
+/*
+ * A user object is a structure that helps the drm give out user handles
+ * to kernel internal objects and to keep track of these objects so that
+ * they can be destroyed, for example when the user space process exits.
+ * Designed to be accessible using a user space 32-bit handle.
+ */
+
+typedef struct drm_user_object{
+ drm_hash_item_t hash;
+ struct list_head list;
+ drm_object_type_t type;
+ atomic_t refcount;
+ int shareable;
+ drm_file_t *owner;
+ void (*ref_struct_locked) (drm_file_t *priv, struct drm_user_object *obj,
+ drm_ref_t ref_action);
+ void (*unref)(drm_file_t *priv, struct drm_user_object *obj,
+ drm_ref_t unref_action);
+ void (*remove)(drm_file_t *priv, struct drm_user_object *obj);
+} drm_user_object_t;
+
+/*
+ * A ref object is a structure which is used to
+ * keep track of references to user objects and to keep track of these
+ * references so that they can be destroyed for example when the user space
+ * process exits. Designed to be accessible using a pointer to the _user_ object.
+ */
+
+
+typedef struct drm_ref_object {
+ drm_hash_item_t hash;
+ struct list_head list;
+ atomic_t refcount;
+ drm_ref_t unref_action;
+} drm_ref_object_t;
+
+
+
/******************************************************************/
/** \name Internal function definitions */
/*@{*/
@@ -837,6 +924,7 @@ unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
extern unsigned long drm_core_get_map_ofs(drm_map_t * map);
extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
+extern pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma);
/* Memory management support (drm_memory.h) */
#include "drm_memory.h"
@@ -915,6 +1003,13 @@ extern int drm_unlock(struct inode *inode, struct file *filp,
extern int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context);
extern int drm_lock_free(drm_device_t * dev,
__volatile__ unsigned int *lock, unsigned int context);
+/*
+ * These are exported to drivers so that they can implement fencing using
+ * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
+ */
+
+extern int drm_i_have_hw_lock(struct file *filp);
+extern int drm_kernel_take_hw_lock(struct file *filp);
/* Buffer management support (drm_bufs.h) */
extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request);
@@ -1058,6 +1153,58 @@ extern int drm_mm_init(drm_mm_t *mm, unsigned long start, unsigned long size);
extern void drm_mm_takedown(drm_mm_t *mm);
+/*
+ * User space object bookkeeping (drm_object.c)
+ */
+
+/*
+ * Must be called with the struct_mutex held.
+ */
+
+extern int drm_add_user_object(drm_file_t *priv, drm_user_object_t *item,
+
+/*
+ * Must be called with the struct_mutex held.
+ */
+ int shareable);
+extern drm_user_object_t *drm_lookup_user_object(drm_file_t *priv, uint32_t key);
+
+/*
+ * Must be called with the struct_mutex held.
+ * If "item" has been obtained by a call to drm_lookup_user_object. You may not
+ * release the struct_mutex before calling drm_remove_ref_object.
+ * This function may temporarily release the struct_mutex.
+ */
+
+extern int drm_remove_user_object(drm_file_t *priv, drm_user_object_t *item);
+
+/*
+ * Must be called with the struct_mutex held. May temporarily release it.
+ */
+
+extern int drm_add_ref_object(drm_file_t *priv, drm_user_object_t *referenced_object,
+ drm_ref_t ref_action);
+
+/*
+ * Must be called with the struct_mutex held.
+ */
+
+drm_ref_object_t *drm_lookup_ref_object(drm_file_t *priv,
+ drm_user_object_t *referenced_object,
+ drm_ref_t ref_action);
+/*
+ * Must be called with the struct_mutex held.
+ * If "item" has been obtained by a call to drm_lookup_ref_object. You may not
+ * release the struct_mutex before calling drm_remove_ref_object.
+ * This function may temporarily release the struct_mutex.
+ */
+
+extern void drm_remove_ref_object(drm_file_t *priv, drm_ref_object_t *item);
+extern int drm_user_object_ref(drm_file_t *priv, uint32_t user_token, drm_object_type_t type,
+ drm_user_object_t **object);
+extern int drm_user_object_unref(drm_file_t *priv, uint32_t user_token, drm_object_type_t type);
+
+
/* Inline replacements for DRM_IOREMAP macros */
static __inline__ void drm_core_ioremap(struct drm_map *map,
struct drm_device *dev)