forked from Minki/linux
f63f6a59d3
Since we don't allow user-space to map the fifo anymore, add a parameter to get fifo hw version and an ioctl to copy the 3D capabilities. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Jakob Bornecranz <jakob@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
576 lines
16 KiB
C
576 lines
16 KiB
C
/**************************************************************************
|
|
*
|
|
* 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"
|
|
|
|
#define VMWGFX_DRIVER_DATE "20100927"
|
|
#define VMWGFX_DRIVER_MAJOR 1
|
|
#define VMWGFX_DRIVER_MINOR 4
|
|
#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
|
|
|
|
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 (*hw_destroy) (struct vmw_resource *res);
|
|
void (*res_free) (struct vmw_resource *res);
|
|
bool on_validate_list;
|
|
/* 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_surface {
|
|
struct vmw_resource res;
|
|
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 vmw_fence_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_fence_queue fence_queue;
|
|
};
|
|
|
|
struct vmw_relocation {
|
|
SVGAGuestPtr *location;
|
|
uint32_t index;
|
|
};
|
|
|
|
struct vmw_sw_context{
|
|
struct ida bo_list;
|
|
uint32_t last_cid;
|
|
bool cid_valid;
|
|
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 vmw_resource *resources[VMWGFX_MAX_VALIDATIONS];
|
|
uint32_t num_ref_resources;
|
|
};
|
|
|
|
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_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 fence_seq;
|
|
wait_queue_head_t fence_queue;
|
|
wait_queue_head_t fifo_queue;
|
|
atomic_t fence_queue_waiters;
|
|
atomic_t fifo_queue_waiters;
|
|
uint32_t last_read_sequence;
|
|
spinlock_t irq_lock;
|
|
|
|
/*
|
|
* 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;
|
|
};
|
|
|
|
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 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 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_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
|
|
struct vmw_dma_buffer *bo);
|
|
extern int vmw_dmabuf_from_vram(struct vmw_private *vmw_priv,
|
|
struct vmw_dma_buffer *bo);
|
|
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);
|
|
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* 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 *sequence);
|
|
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);
|
|
|
|
/**
|
|
* 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_sys_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);
|
|
|
|
/**
|
|
* IRQs and wating - vmwgfx_irq.c
|
|
*/
|
|
|
|
extern irqreturn_t vmw_irq_handler(DRM_IRQ_ARGS);
|
|
extern int vmw_wait_fence(struct vmw_private *dev_priv, bool lazy,
|
|
uint32_t sequence, 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_fence_signaled(struct vmw_private *dev_priv,
|
|
uint32_t sequence);
|
|
extern int vmw_fence_wait_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv);
|
|
extern int vmw_fallback_wait(struct vmw_private *dev_priv,
|
|
bool lazy,
|
|
bool fifo_idle,
|
|
uint32_t sequence,
|
|
bool interruptible,
|
|
unsigned long timeout);
|
|
extern void vmw_update_sequence(struct vmw_private *dev_priv,
|
|
struct vmw_fifo_state *fifo_state);
|
|
|
|
|
|
/**
|
|
* Rudimentary fence objects currently used only for throttling -
|
|
* vmwgfx_fence.c
|
|
*/
|
|
|
|
extern void vmw_fence_queue_init(struct vmw_fence_queue *queue);
|
|
extern void vmw_fence_queue_takedown(struct vmw_fence_queue *queue);
|
|
extern int vmw_fence_push(struct vmw_fence_queue *queue,
|
|
uint32_t sequence);
|
|
extern int vmw_fence_pull(struct vmw_fence_queue *queue,
|
|
uint32_t signaled_sequence);
|
|
extern int vmw_wait_lag(struct vmw_private *dev_priv,
|
|
struct vmw_fence_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);
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
#endif
|