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linux/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
Jakob Bornecrantz 551a6697d0 vmwgfx: Add helper function to get surface or dmabuf 
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-19 14:06:02 +00:00

706 lines
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/**************************************************************************
*
* Copyright © 2009 VMware, Inc., Palo Alto, CA., 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.
*
**************************************************************************/
#ifndef _VMWGFX_DRV_H_
#define _VMWGFX_DRV_H_
#include "vmwgfx_reg.h"
#include "drmP.h"
#include "vmwgfx_drm.h"
#include "drm_hashtab.h"
#include "linux/suspend.h"
#include "ttm/ttm_bo_driver.h"
#include "ttm/ttm_object.h"
#include "ttm/ttm_lock.h"
#include "ttm/ttm_execbuf_util.h"
#include "ttm/ttm_module.h"
#include "vmwgfx_fence.h"
#define VMWGFX_DRIVER_DATE "20111025"
#define VMWGFX_DRIVER_MAJOR 2
#define VMWGFX_DRIVER_MINOR 3
#define VMWGFX_DRIVER_PATCHLEVEL 0
#define VMWGFX_FILE_PAGE_OFFSET 0x00100000
#define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
#define VMWGFX_MAX_RELOCATIONS 2048
#define VMWGFX_MAX_VALIDATIONS 2048
#define VMWGFX_MAX_DISPLAYS 16
#define VMWGFX_CMD_BOUNCE_INIT_SIZE 32768
#define VMW_PL_GMR TTM_PL_PRIV0
#define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0
#define VMW_RES_CONTEXT ttm_driver_type0
#define VMW_RES_SURFACE ttm_driver_type1
#define VMW_RES_STREAM ttm_driver_type2
#define VMW_RES_FENCE ttm_driver_type3
struct vmw_fpriv {
struct drm_master *locked_master;
struct ttm_object_file *tfile;
};
struct vmw_dma_buffer {
struct ttm_buffer_object base;
struct list_head validate_list;
bool gmr_bound;
uint32_t cur_validate_node;
bool on_validate_list;
};
struct vmw_resource {
struct kref kref;
struct vmw_private *dev_priv;
struct idr *idr;
int id;
enum ttm_object_type res_type;
bool avail;
void (*remove_from_lists) (struct vmw_resource *res);
void (*hw_destroy) (struct vmw_resource *res);
void (*res_free) (struct vmw_resource *res);
struct list_head validate_head;
struct list_head query_head; /* Protected by the cmdbuf mutex */
/* TODO is a generic snooper needed? */
#if 0
void (*snoop)(struct vmw_resource *res,
struct ttm_object_file *tfile,
SVGA3dCmdHeader *header);
void *snoop_priv;
#endif
};
struct vmw_cursor_snooper {
struct drm_crtc *crtc;
size_t age;
uint32_t *image;
};
struct vmw_framebuffer;
struct vmw_surface_offset;
struct vmw_surface {
struct vmw_resource res;
struct list_head lru_head; /* Protected by the resource lock */
uint32_t flags;
uint32_t format;
uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
struct drm_vmw_size *sizes;
uint32_t num_sizes;
bool scanout;
/* TODO so far just a extra pointer */
struct vmw_cursor_snooper snooper;
struct ttm_buffer_object *backup;
struct vmw_surface_offset *offsets;
uint32_t backup_size;
};
struct vmw_marker_queue {
struct list_head head;
struct timespec lag;
struct timespec lag_time;
spinlock_t lock;
};
struct vmw_fifo_state {
unsigned long reserved_size;
__le32 *dynamic_buffer;
__le32 *static_buffer;
unsigned long static_buffer_size;
bool using_bounce_buffer;
uint32_t capabilities;
struct mutex fifo_mutex;
struct rw_semaphore rwsem;
struct vmw_marker_queue marker_queue;
};
struct vmw_relocation {
SVGAGuestPtr *location;
uint32_t index;
};
struct vmw_sw_context{
struct ida bo_list;
uint32_t last_cid;
bool cid_valid;
bool kernel; /**< is the called made from the kernel */
struct vmw_resource *cur_ctx;
uint32_t last_sid;
uint32_t sid_translation;
bool sid_valid;
struct ttm_object_file *tfile;
struct list_head validate_nodes;
struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
uint32_t cur_reloc;
struct ttm_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
uint32_t cur_val_buf;
uint32_t *cmd_bounce;
uint32_t cmd_bounce_size;
struct list_head resource_list;
uint32_t fence_flags;
struct list_head query_list;
struct ttm_buffer_object *cur_query_bo;
uint32_t cur_query_cid;
bool query_cid_valid;
};
struct vmw_legacy_display;
struct vmw_overlay;
struct vmw_master {
struct ttm_lock lock;
struct mutex fb_surf_mutex;
struct list_head fb_surf;
};
struct vmw_vga_topology_state {
uint32_t width;
uint32_t height;
uint32_t primary;
uint32_t pos_x;
uint32_t pos_y;
};
struct vmw_private {
struct ttm_bo_device bdev;
struct ttm_bo_global_ref bo_global_ref;
struct drm_global_reference mem_global_ref;
struct vmw_fifo_state fifo;
struct drm_device *dev;
unsigned long vmw_chipset;
unsigned int io_start;
uint32_t vram_start;
uint32_t vram_size;
uint32_t mmio_start;
uint32_t mmio_size;
uint32_t fb_max_width;
uint32_t fb_max_height;
__le32 __iomem *mmio_virt;
int mmio_mtrr;
uint32_t capabilities;
uint32_t max_gmr_descriptors;
uint32_t max_gmr_ids;
uint32_t max_gmr_pages;
uint32_t memory_size;
bool has_gmr;
struct mutex hw_mutex;
/*
* VGA registers.
*/
struct vmw_vga_topology_state vga_save[VMWGFX_MAX_DISPLAYS];
uint32_t vga_width;
uint32_t vga_height;
uint32_t vga_bpp;
uint32_t vga_bpl;
uint32_t vga_pitchlock;
uint32_t num_displays;
/*
* Framebuffer info.
*/
void *fb_info;
struct vmw_legacy_display *ldu_priv;
struct vmw_screen_object_display *sou_priv;
struct vmw_overlay *overlay_priv;
/*
* Context and surface management.
*/
rwlock_t resource_lock;
struct idr context_idr;
struct idr surface_idr;
struct idr stream_idr;
/*
* Block lastclose from racing with firstopen.
*/
struct mutex init_mutex;
/*
* A resource manager for kernel-only surfaces and
* contexts.
*/
struct ttm_object_device *tdev;
/*
* Fencing and IRQs.
*/
atomic_t marker_seq;
wait_queue_head_t fence_queue;
wait_queue_head_t fifo_queue;
int fence_queue_waiters; /* Protected by hw_mutex */
int goal_queue_waiters; /* Protected by hw_mutex */
atomic_t fifo_queue_waiters;
uint32_t last_read_seqno;
spinlock_t irq_lock;
struct vmw_fence_manager *fman;
uint32_t irq_mask;
/*
* Device state
*/
uint32_t traces_state;
uint32_t enable_state;
uint32_t config_done_state;
/**
* Execbuf
*/
/**
* Protected by the cmdbuf mutex.
*/
struct vmw_sw_context ctx;
struct mutex cmdbuf_mutex;
/**
* Operating mode.
*/
bool stealth;
bool is_opened;
bool enable_fb;
/**
* Master management.
*/
struct vmw_master *active_master;
struct vmw_master fbdev_master;
struct notifier_block pm_nb;
bool suspended;
struct mutex release_mutex;
uint32_t num_3d_resources;
/*
* Query processing. These members
* are protected by the cmdbuf mutex.
*/
struct ttm_buffer_object *dummy_query_bo;
struct ttm_buffer_object *pinned_bo;
uint32_t query_cid;
bool dummy_query_bo_pinned;
/*
* Surface swapping. The "surface_lru" list is protected by the
* resource lock in order to be able to destroy a surface and take
* it off the lru atomically. "used_memory_size" is currently
* protected by the cmdbuf mutex for simplicity.
*/
struct list_head surface_lru;
uint32_t used_memory_size;
};
static inline struct vmw_private *vmw_priv(struct drm_device *dev)
{
return (struct vmw_private *)dev->dev_private;
}
static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv)
{
return (struct vmw_fpriv *)file_priv->driver_priv;
}
static inline struct vmw_master *vmw_master(struct drm_master *master)
{
return (struct vmw_master *) master->driver_priv;
}
static inline void vmw_write(struct vmw_private *dev_priv,
unsigned int offset, uint32_t value)
{
outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
}
static inline uint32_t vmw_read(struct vmw_private *dev_priv,
unsigned int offset)
{
uint32_t val;
outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
return val;
}
int vmw_3d_resource_inc(struct vmw_private *dev_priv, bool unhide_svga);
void vmw_3d_resource_dec(struct vmw_private *dev_priv, bool hide_svga);
/**
* GMR utilities - vmwgfx_gmr.c
*/
extern int vmw_gmr_bind(struct vmw_private *dev_priv,
struct page *pages[],
unsigned long num_pages,
int gmr_id);
extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id);
/**
* Resource utilities - vmwgfx_resource.c
*/
extern struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv);
extern void vmw_resource_unreference(struct vmw_resource **p_res);
extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_context_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
int id,
struct vmw_resource **p_res);
extern int vmw_user_lookup_handle(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle,
struct vmw_surface **out_surf,
struct vmw_dma_buffer **out_buf);
extern void vmw_surface_res_free(struct vmw_resource *res);
extern int vmw_surface_init(struct vmw_private *dev_priv,
struct vmw_surface *srf,
void (*res_free) (struct vmw_resource *res));
extern int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle,
struct vmw_surface **out);
extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_surface_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle, int *id);
extern int vmw_surface_validate(struct vmw_private *dev_priv,
struct vmw_surface *srf);
extern void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo);
extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
struct vmw_dma_buffer *vmw_bo,
size_t size, struct ttm_placement *placement,
bool interuptable,
void (*bo_free) (struct ttm_buffer_object *bo));
extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
uint32_t cur_validate_node);
extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
uint32_t id, struct vmw_dma_buffer **out);
extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_user_stream_lookup(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t *inout_id,
struct vmw_resource **out);
extern void vmw_resource_unreserve(struct list_head *list);
/**
* DMA buffer helper routines - vmwgfx_dmabuf.c
*/
extern int vmw_dmabuf_to_placement(struct vmw_private *vmw_priv,
struct vmw_dma_buffer *bo,
struct ttm_placement *placement,
bool interruptible);
extern int vmw_dmabuf_to_vram(struct vmw_private *dev_priv,
struct vmw_dma_buffer *buf,
bool pin, bool interruptible);
extern int vmw_dmabuf_to_vram_or_gmr(struct vmw_private *dev_priv,
struct vmw_dma_buffer *buf,
bool pin, bool interruptible);
extern int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
struct vmw_dma_buffer *bo,
bool pin, bool interruptible);
extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv,
struct vmw_dma_buffer *bo,
bool interruptible);
extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
SVGAGuestPtr *ptr);
extern void vmw_bo_pin(struct ttm_buffer_object *bo, bool pin);
/**
* Misc Ioctl functionality - vmwgfx_ioctl.c
*/
extern int vmw_getparam_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_present_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern unsigned int vmw_fops_poll(struct file *filp,
struct poll_table_struct *wait);
extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
size_t count, loff_t *offset);
/**
* Fifo utilities - vmwgfx_fifo.c
*/
extern int vmw_fifo_init(struct vmw_private *dev_priv,
struct vmw_fifo_state *fifo);
extern void vmw_fifo_release(struct vmw_private *dev_priv,
struct vmw_fifo_state *fifo);
extern void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes);
extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
uint32_t *seqno);
extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
extern int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
uint32_t cid);
/**
* TTM glue - vmwgfx_ttm_glue.c
*/
extern int vmw_ttm_global_init(struct vmw_private *dev_priv);
extern void vmw_ttm_global_release(struct vmw_private *dev_priv);
extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
/**
* TTM buffer object driver - vmwgfx_buffer.c
*/
extern struct ttm_placement vmw_vram_placement;
extern struct ttm_placement vmw_vram_ne_placement;
extern struct ttm_placement vmw_vram_sys_placement;
extern struct ttm_placement vmw_vram_gmr_placement;
extern struct ttm_placement vmw_vram_gmr_ne_placement;
extern struct ttm_placement vmw_sys_placement;
extern struct ttm_placement vmw_evictable_placement;
extern struct ttm_placement vmw_srf_placement;
extern struct ttm_bo_driver vmw_bo_driver;
extern int vmw_dma_quiescent(struct drm_device *dev);
/**
* Command submission - vmwgfx_execbuf.c
*/
extern int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_execbuf_process(struct drm_file *file_priv,
struct vmw_private *dev_priv,
void __user *user_commands,
void *kernel_commands,
uint32_t command_size,
uint64_t throttle_us,
struct drm_vmw_fence_rep __user
*user_fence_rep);
extern void
vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
bool only_on_cid_match, uint32_t cid);
extern int vmw_execbuf_fence_commands(struct drm_file *file_priv,
struct vmw_private *dev_priv,
struct vmw_fence_obj **p_fence,
uint32_t *p_handle);
extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
struct vmw_fpriv *vmw_fp,
int ret,
struct drm_vmw_fence_rep __user
*user_fence_rep,
struct vmw_fence_obj *fence,
uint32_t fence_handle);
/**
* IRQs and wating - vmwgfx_irq.c
*/
extern irqreturn_t vmw_irq_handler(DRM_IRQ_ARGS);
extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
uint32_t seqno, bool interruptible,
unsigned long timeout);
extern void vmw_irq_preinstall(struct drm_device *dev);
extern int vmw_irq_postinstall(struct drm_device *dev);
extern void vmw_irq_uninstall(struct drm_device *dev);
extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
uint32_t seqno);
extern int vmw_fallback_wait(struct vmw_private *dev_priv,
bool lazy,
bool fifo_idle,
uint32_t seqno,
bool interruptible,
unsigned long timeout);
extern void vmw_update_seqno(struct vmw_private *dev_priv,
struct vmw_fifo_state *fifo_state);
extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
extern void vmw_goal_waiter_add(struct vmw_private *dev_priv);
extern void vmw_goal_waiter_remove(struct vmw_private *dev_priv);
/**
* Rudimentary fence-like objects currently used only for throttling -
* vmwgfx_marker.c
*/
extern void vmw_marker_queue_init(struct vmw_marker_queue *queue);
extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue);
extern int vmw_marker_push(struct vmw_marker_queue *queue,
uint32_t seqno);
extern int vmw_marker_pull(struct vmw_marker_queue *queue,
uint32_t signaled_seqno);
extern int vmw_wait_lag(struct vmw_private *dev_priv,
struct vmw_marker_queue *queue, uint32_t us);
/**
* Kernel framebuffer - vmwgfx_fb.c
*/
int vmw_fb_init(struct vmw_private *vmw_priv);
int vmw_fb_close(struct vmw_private *dev_priv);
int vmw_fb_off(struct vmw_private *vmw_priv);
int vmw_fb_on(struct vmw_private *vmw_priv);
/**
* Kernel modesetting - vmwgfx_kms.c
*/
int vmw_kms_init(struct vmw_private *dev_priv);
int vmw_kms_close(struct vmw_private *dev_priv);
int vmw_kms_save_vga(struct vmw_private *vmw_priv);
int vmw_kms_restore_vga(struct vmw_private *vmw_priv);
int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv);
void vmw_kms_cursor_snoop(struct vmw_surface *srf,
struct ttm_object_file *tfile,
struct ttm_buffer_object *bo,
SVGA3dCmdHeader *header);
int vmw_kms_write_svga(struct vmw_private *vmw_priv,
unsigned width, unsigned height, unsigned pitch,
unsigned bpp, unsigned depth);
void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
uint32_t pitch,
uint32_t height);
u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc);
int vmw_enable_vblank(struct drm_device *dev, int crtc);
void vmw_disable_vblank(struct drm_device *dev, int crtc);
int vmw_kms_present(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct vmw_surface *surface,
uint32_t sid, int32_t destX, int32_t destY,
struct drm_vmw_rect *clips,
uint32_t num_clips);
int vmw_kms_readback(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct drm_vmw_fence_rep __user *user_fence_rep,
struct drm_vmw_rect *clips,
uint32_t num_clips);
int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
/**
* Overlay control - vmwgfx_overlay.c
*/
int vmw_overlay_init(struct vmw_private *dev_priv);
int vmw_overlay_close(struct vmw_private *dev_priv);
int vmw_overlay_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int vmw_overlay_stop_all(struct vmw_private *dev_priv);
int vmw_overlay_resume_all(struct vmw_private *dev_priv);
int vmw_overlay_pause_all(struct vmw_private *dev_priv);
int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out);
int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
/**
* GMR Id manager
*/
extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func;
/**
* Inline helper functions
*/
static inline void vmw_surface_unreference(struct vmw_surface **srf)
{
struct vmw_surface *tmp_srf = *srf;
struct vmw_resource *res = &tmp_srf->res;
*srf = NULL;
vmw_resource_unreference(&res);
}
static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf)
{
(void) vmw_resource_reference(&srf->res);
return srf;
}
static inline void vmw_dmabuf_unreference(struct vmw_dma_buffer **buf)
{
struct vmw_dma_buffer *tmp_buf = *buf;
struct ttm_buffer_object *bo = &tmp_buf->base;
*buf = NULL;
ttm_bo_unref(&bo);
}
static inline struct vmw_dma_buffer *vmw_dmabuf_reference(struct vmw_dma_buffer *buf)
{
if (ttm_bo_reference(&buf->base))
return buf;
return NULL;
}
static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
{
return (struct ttm_mem_global *) dev_priv->mem_global_ref.object;
}
#endif
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