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drm/linux-core/drm_objects.h

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/**************************************************************************
*
* Copyright (c) 2006-2007 Tungsten Graphics, Inc., Cedar Park, TX., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
*/
#ifndef _DRM_OBJECTS_H
#define _DRM_OJBECTS_H
#define DRM_HAS_TTM
struct drm_device;
/***************************************************
* User space objects. (drm_object.c)
*/
#define drm_user_object_entry(_ptr, _type, _member) container_of(_ptr, _type, _member)
typedef enum {
drm_fence_type,
drm_buffer_type,
drm_ttm_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;
/**
* Must be called with the struct_mutex held.
*/
extern int drm_add_user_object(drm_file_t * priv, drm_user_object_t * item,
int shareable);
/**
* Must be called with the struct_mutex held.
*/
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);
/***************************************************
* Fence objects. (drm_fence.c)
*/
typedef struct drm_fence_object {
drm_user_object_t base;
atomic_t usage;
/*
* The below three fields are protected by the fence manager spinlock.
*/
struct list_head ring;
int class;
uint32_t native_type;
uint32_t type;
uint32_t signaled;
uint32_t sequence;
uint32_t flush_mask;
uint32_t submitted_flush;
} drm_fence_object_t;
#define _DRM_FENCE_CLASSES 8
#define _DRM_FENCE_TYPE_EXE 0x00
typedef struct drm_fence_class_manager {
struct list_head ring;
uint32_t pending_flush;
wait_queue_head_t fence_queue;
int pending_exe_flush;
uint32_t last_exe_flush;
uint32_t exe_flush_sequence;
} drm_fence_class_manager_t;
typedef struct drm_fence_manager {
int initialized;
rwlock_t lock;
drm_fence_class_manager_t class[_DRM_FENCE_CLASSES];
uint32_t num_classes;
atomic_t count;
} drm_fence_manager_t;
typedef struct drm_fence_driver {
uint32_t num_classes;
uint32_t wrap_diff;
uint32_t flush_diff;
uint32_t sequence_mask;
int lazy_capable;
int (*has_irq) (struct drm_device * dev, uint32_t class,
uint32_t flags);
int (*emit) (struct drm_device * dev, uint32_t class, uint32_t flags,
uint32_t * breadcrumb, uint32_t * native_type);
void (*poke_flush) (struct drm_device * dev, uint32_t class);
} drm_fence_driver_t;
extern void drm_fence_handler(struct drm_device *dev, uint32_t class,
uint32_t sequence, uint32_t type);
extern void drm_fence_manager_init(struct drm_device *dev);
extern void drm_fence_manager_takedown(struct drm_device *dev);
extern void drm_fence_flush_old(struct drm_device *dev, uint32_t class,
uint32_t sequence);
extern int drm_fence_object_flush(struct drm_device *dev,
drm_fence_object_t * fence, uint32_t type);
extern int drm_fence_object_signaled(drm_fence_object_t * fence, uint32_t type);
extern void drm_fence_usage_deref_locked(struct drm_device *dev,
drm_fence_object_t * fence);
extern void drm_fence_usage_deref_unlocked(struct drm_device *dev,
drm_fence_object_t * fence);
extern int drm_fence_object_wait(struct drm_device *dev,
drm_fence_object_t * fence,
int lazy, int ignore_signals, uint32_t mask);
extern int drm_fence_object_create(struct drm_device *dev, uint32_t type,
uint32_t fence_flags, uint32_t class,
drm_fence_object_t ** c_fence);
extern int drm_fence_add_user_object(drm_file_t * priv,
drm_fence_object_t * fence, int shareable);
extern int drm_fence_ioctl(DRM_IOCTL_ARGS);
/**************************************************
*TTMs
*/
/*
* The ttm backend GTT interface. (In our case AGP).
* Any similar type of device (PCIE?)
* needs only to implement these functions to be usable with the "TTM" interface.
* The AGP backend implementation lives in drm_agpsupport.c
* basically maps these calls to available functions in agpgart.
* Each drm device driver gets an
* additional function pointer that creates these types,
* so that the device can choose the correct aperture.
* (Multiple AGP apertures, etc.)
* Most device drivers will let this point to the standard AGP implementation.
*/
#define DRM_BE_FLAG_NEEDS_FREE 0x00000001
#define DRM_BE_FLAG_BOUND_CACHED 0x00000002
struct drm_ttm_backend;
typedef struct drm_ttm_backend_func {
int (*needs_ub_cache_adjust) (struct drm_ttm_backend * backend);
int (*populate) (struct drm_ttm_backend * backend,
unsigned long num_pages, struct page ** pages);
void (*clear) (struct drm_ttm_backend * backend);
int (*bind) (struct drm_ttm_backend * backend,
unsigned long offset, int cached);
int (*unbind) (struct drm_ttm_backend * backend);
void (*destroy) (struct drm_ttm_backend * backend);
} drm_ttm_backend_func_t;
typedef struct drm_ttm_backend {
uint32_t flags;
int mem_type;
drm_ttm_backend_func_t *func;
} drm_ttm_backend_t;
typedef struct drm_ttm {
struct page **pages;
uint32_t page_flags;
unsigned long num_pages;
unsigned long aper_offset;
atomic_t vma_count;
struct drm_device *dev;
int destroy;
uint32_t mapping_offset;
drm_ttm_backend_t *be;
enum {
ttm_bound,
ttm_evicted,
ttm_unbound,
ttm_unpopulated,
} state;
} drm_ttm_t;
extern drm_ttm_t *drm_ttm_init(struct drm_device *dev, unsigned long size);
extern int drm_bind_ttm(drm_ttm_t * ttm, int cached, unsigned long aper_offset);
extern void drm_ttm_unbind(drm_ttm_t * ttm);
extern void drm_ttm_evict(drm_ttm_t * ttm);
extern void drm_ttm_fixup_caching(drm_ttm_t * ttm);
extern struct page *drm_ttm_get_page(drm_ttm_t * ttm, int index);
/*
* Destroy a ttm. The user normally calls drmRmMap or a similar IOCTL to do this,
* which calls this function iff there are no vmas referencing it anymore. Otherwise it is called
* when the last vma exits.
*/
extern int drm_destroy_ttm(drm_ttm_t * ttm);
#define DRM_FLAG_MASKED(_old, _new, _mask) {\
(_old) ^= (((_old) ^ (_new)) & (_mask)); \
}
#define DRM_TTM_MASK_FLAGS ((1 << PAGE_SHIFT) - 1)
#define DRM_TTM_MASK_PFN (0xFFFFFFFFU - DRM_TTM_MASK_FLAGS)
/*
* Page flags.
*/
#define DRM_TTM_PAGE_UNCACHED 0x01
#define DRM_TTM_PAGE_USED 0x02
#define DRM_TTM_PAGE_BOUND 0x04
#define DRM_TTM_PAGE_PRESENT 0x08
#define DRM_TTM_PAGE_VMALLOC 0x10
/***************************************************
* Buffer objects. (drm_bo.c, drm_bo_move.c)
*/
typedef struct drm_bo_mem_reg {
drm_mm_node_t *mm_node;
unsigned long size;
unsigned long num_pages;
uint32_t page_alignment;
uint32_t mem_type;
uint32_t flags;
uint32_t mask;
} drm_bo_mem_reg_t;
typedef struct drm_buffer_object {
struct drm_device *dev;
drm_user_object_t base;
/*
* If there is a possibility that the usage variable is zero,
* then dev->struct_mutext should be locked before incrementing it.
*/
atomic_t usage;
unsigned long buffer_start;
drm_bo_type_t type;
unsigned long offset;
atomic_t mapped;
drm_bo_mem_reg_t mem;
struct list_head lru;
struct list_head ddestroy;
uint32_t fence_type;
uint32_t fence_class;
drm_fence_object_t *fence;
uint32_t priv_flags;
wait_queue_head_t event_queue;
struct mutex mutex;
/* For pinned buffers */
drm_mm_node_t *pinned_node;
uint32_t pinned_mem_type;
struct list_head pinned_lru;
/* For vm */
drm_ttm_t *ttm;
drm_map_list_t map_list;
uint32_t memory_type;
unsigned long bus_offset;
uint32_t vm_flags;
void *iomap;
#ifdef DRM_ODD_MM_COMPAT
/* dev->struct_mutex only protected. */
struct list_head vma_list;
struct list_head p_mm_list;
#endif
} drm_buffer_object_t;
#define _DRM_BO_FLAG_UNFENCED 0x00000001
#define _DRM_BO_FLAG_EVICTED 0x00000002
typedef struct drm_mem_type_manager {
int has_type;
int use_type;
drm_mm_t manager;
struct list_head lru;
struct list_head pinned;
uint32_t flags;
uint32_t drm_bus_maptype;
unsigned long io_offset;
unsigned long io_size;
void *io_addr;
} drm_mem_type_manager_t;
#define _DRM_FLAG_MEMTYPE_FIXED 0x00000001 /* Fixed (on-card) PCI memory */
#define _DRM_FLAG_MEMTYPE_MAPPABLE 0x00000002 /* Memory mappable */
#define _DRM_FLAG_MEMTYPE_CACHED 0x00000004 /* Cached binding */
#define _DRM_FLAG_NEEDS_IOREMAP 0x00000008 /* Fixed memory needs ioremap
before kernel access. */
#define _DRM_FLAG_MEMTYPE_CMA 0x00000010 /* Can't map aperture */
#define _DRM_FLAG_MEMTYPE_CSELECT 0x00000020 /* Select caching */
typedef struct drm_buffer_manager {
struct mutex init_mutex;
struct mutex evict_mutex;
int nice_mode;
int initialized;
drm_file_t *last_to_validate;
drm_mem_type_manager_t man[DRM_BO_MEM_TYPES];
struct list_head unfenced;
struct list_head ddestroy;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
struct work_struct wq;
#else
struct delayed_work wq;
#endif
uint32_t fence_type;
unsigned long cur_pages;
atomic_t count;
} drm_buffer_manager_t;
typedef struct drm_bo_driver {
const uint32_t *mem_type_prio;
const uint32_t *mem_busy_prio;
uint32_t num_mem_type_prio;
uint32_t num_mem_busy_prio;
drm_ttm_backend_t *(*create_ttm_backend_entry)
(struct drm_device * dev);
int (*fence_type) (struct drm_buffer_object *bo, uint32_t * class, uint32_t * type);
int (*invalidate_caches) (struct drm_device * dev, uint32_t flags);
int (*init_mem_type) (struct drm_device * dev, uint32_t type,
drm_mem_type_manager_t * man);
uint32_t(*evict_mask) (struct drm_buffer_object *bo);
int (*move) (struct drm_buffer_object * bo,
int evict, int no_wait, struct drm_bo_mem_reg * new_mem);
} drm_bo_driver_t;
/*
* buffer objects (drm_bo.c)
*/
extern int drm_bo_ioctl(DRM_IOCTL_ARGS);
extern int drm_mm_init_ioctl(DRM_IOCTL_ARGS);
extern int drm_bo_driver_finish(struct drm_device *dev);
extern int drm_bo_driver_init(struct drm_device *dev);
extern int drm_bo_pci_offset(struct drm_device *dev,
drm_bo_mem_reg_t * mem,
unsigned long *bus_base,
unsigned long *bus_offset,
unsigned long *bus_size);
extern int drm_mem_reg_is_pci(struct drm_device *dev, drm_bo_mem_reg_t * mem);
extern void drm_bo_usage_deref_locked(drm_buffer_object_t * bo);
extern int drm_fence_buffer_objects(drm_file_t * priv,
struct list_head *list,
uint32_t fence_flags,
drm_fence_object_t * fence,
drm_fence_object_t ** used_fence);
extern void drm_bo_add_to_lru(drm_buffer_object_t * bo);
extern int drm_bo_wait(drm_buffer_object_t * bo, int lazy, int ignore_signals,
int no_wait);
extern int drm_bo_mem_space(drm_buffer_object_t * bo,
drm_bo_mem_reg_t * mem, int no_wait);
extern int drm_bo_move_buffer(drm_buffer_object_t * bo, uint32_t new_mem_flags,
int no_wait, int move_unfenced);
/*
* Buffer object memory move helpers.
* drm_bo_move.c
*/
extern int drm_bo_move_ttm(drm_buffer_object_t * bo,
int evict, int no_wait, drm_bo_mem_reg_t * new_mem);
extern int drm_bo_move_memcpy(drm_buffer_object_t * bo,
int evict,
int no_wait, drm_bo_mem_reg_t * new_mem);
extern int drm_bo_move_accel_cleanup(drm_buffer_object_t * bo,
int evict,
int no_wait,
uint32_t fence_class,
uint32_t fence_type,
uint32_t fence_flags,
drm_bo_mem_reg_t * new_mem);
#endif
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