linux/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
Thomas Zimmermann 6034d9d48e drm/vmwgfx: Replace ttm_bo_unref with ttm_bo_put
The function ttm_bo_put releases a reference to a TTM buffer object. The
function's name is more aligned to the Linux kernel convention of naming
ref-counting function _get and _put.

A call to ttm_bo_unref takes the address of the TTM BO object's pointer and
clears the pointer's value to NULL. This is not necessary in most cases and
sometimes even worked around by the calling code. A call to ttm_bo_put only
releases the reference without clearing the pointer.

In places where is might be necessary, the current behaviour of cleaning the
pointer is kept.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-28 11:43:24 -05:00

1392 lines
43 KiB
C

/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/**************************************************************************
*
* Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
*
* 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_validation.h"
#include "vmwgfx_reg.h"
#include <drm/drmP.h>
#include <drm/vmwgfx_drm.h>
#include <drm/drm_hashtab.h>
#include <drm/drm_auth.h>
#include <linux/suspend.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_execbuf_util.h>
#include <drm/ttm/ttm_module.h>
#include "vmwgfx_fence.h"
#include "ttm_object.h"
#include "ttm_lock.h"
#include <linux/sync_file.h>
#define VMWGFX_DRIVER_NAME "vmwgfx"
#define VMWGFX_DRIVER_DATE "20180704"
#define VMWGFX_DRIVER_MAJOR 2
#define VMWGFX_DRIVER_MINOR 15
#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 VMWGFX_ENABLE_SCREEN_TARGET_OTABLE 1
/*
* Perhaps we should have sysfs entries for these.
*/
#define VMWGFX_NUM_GB_CONTEXT 256
#define VMWGFX_NUM_GB_SHADER 20000
#define VMWGFX_NUM_GB_SURFACE 32768
#define VMWGFX_NUM_GB_SCREEN_TARGET VMWGFX_MAX_DISPLAYS
#define VMWGFX_NUM_DXCONTEXT 256
#define VMWGFX_NUM_DXQUERY 512
#define VMWGFX_NUM_MOB (VMWGFX_NUM_GB_CONTEXT +\
VMWGFX_NUM_GB_SHADER +\
VMWGFX_NUM_GB_SURFACE +\
VMWGFX_NUM_GB_SCREEN_TARGET)
#define VMW_PL_GMR (TTM_PL_PRIV + 0)
#define VMW_PL_FLAG_GMR (TTM_PL_FLAG_PRIV << 0)
#define VMW_PL_MOB (TTM_PL_PRIV + 1)
#define VMW_PL_FLAG_MOB (TTM_PL_FLAG_PRIV << 1)
#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
#define VMW_RES_SHADER ttm_driver_type4
struct vmw_fpriv {
struct drm_master *locked_master;
struct ttm_object_file *tfile;
bool gb_aware; /* user-space is guest-backed aware */
};
struct vmw_buffer_object {
struct ttm_buffer_object base;
struct list_head res_list;
s32 pin_count;
/* Not ref-counted. Protected by binding_mutex */
struct vmw_resource *dx_query_ctx;
/* Protected by reservation */
struct ttm_bo_kmap_obj map;
};
/**
* struct vmw_validate_buffer - Carries validation info about buffers.
*
* @base: Validation info for TTM.
* @hash: Hash entry for quick lookup of the TTM buffer object.
*
* This structure contains also driver private validation info
* on top of the info needed by TTM.
*/
struct vmw_validate_buffer {
struct ttm_validate_buffer base;
struct drm_hash_item hash;
bool validate_as_mob;
};
struct vmw_res_func;
/**
* struct vmw-resource - base class for hardware resources
*
* @kref: For refcounting.
* @dev_priv: Pointer to the device private for this resource. Immutable.
* @id: Device id. Protected by @dev_priv::resource_lock.
* @backup_size: Backup buffer size. Immutable.
* @res_dirty: Resource contains data not yet in the backup buffer. Protected
* by resource reserved.
* @backup_dirty: Backup buffer contains data not yet in the HW resource.
* Protecte by resource reserved.
* @backup: The backup buffer if any. Protected by resource reserved.
* @backup_offset: Offset into the backup buffer if any. Protected by resource
* reserved. Note that only a few resource types can have a @backup_offset
* different from zero.
* @pin_count: The pin count for this resource. A pinned resource has a
* pin-count greater than zero. It is not on the resource LRU lists and its
* backup buffer is pinned. Hence it can't be evicted.
* @func: Method vtable for this resource. Immutable.
* @lru_head: List head for the LRU list. Protected by @dev_priv::resource_lock.
* @mob_head: List head for the MOB backup list. Protected by @backup reserved.
* @binding_head: List head for the context binding list. Protected by
* the @dev_priv::binding_mutex
* @res_free: The resource destructor.
* @hw_destroy: Callback to destroy the resource on the device, as part of
* resource destruction.
*/
struct vmw_resource {
struct kref kref;
struct vmw_private *dev_priv;
int id;
unsigned long backup_size;
bool res_dirty;
bool backup_dirty;
struct vmw_buffer_object *backup;
unsigned long backup_offset;
unsigned long pin_count;
const struct vmw_res_func *func;
struct list_head lru_head;
struct list_head mob_head;
struct list_head binding_head;
void (*res_free) (struct vmw_resource *res);
void (*hw_destroy) (struct vmw_resource *res);
};
/*
* Resources that are managed using ioctls.
*/
enum vmw_res_type {
vmw_res_context,
vmw_res_surface,
vmw_res_stream,
vmw_res_shader,
vmw_res_dx_context,
vmw_res_cotable,
vmw_res_view,
vmw_res_max
};
/*
* Resources that are managed using command streams.
*/
enum vmw_cmdbuf_res_type {
vmw_cmdbuf_res_shader,
vmw_cmdbuf_res_view
};
struct vmw_cmdbuf_res_manager;
struct vmw_cursor_snooper {
size_t age;
uint32_t *image;
};
struct vmw_framebuffer;
struct vmw_surface_offset;
struct vmw_surface {
struct vmw_resource res;
SVGA3dSurfaceAllFlags flags;
uint32_t format;
uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
struct drm_vmw_size base_size;
struct drm_vmw_size *sizes;
uint32_t num_sizes;
bool scanout;
uint32_t array_size;
/* TODO so far just a extra pointer */
struct vmw_cursor_snooper snooper;
struct vmw_surface_offset *offsets;
SVGA3dTextureFilter autogen_filter;
uint32_t multisample_count;
struct list_head view_list;
SVGA3dMSPattern multisample_pattern;
SVGA3dMSQualityLevel quality_level;
};
struct vmw_marker_queue {
struct list_head head;
u64 lag;
u64 lag_time;
spinlock_t lock;
};
struct vmw_fifo_state {
unsigned long reserved_size;
u32 *dynamic_buffer;
u32 *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;
bool dx;
};
/**
* struct vmw_res_cache_entry - resource information cache entry
* @handle: User-space handle of a resource.
* @res: Non-ref-counted pointer to the resource.
* @valid_handle: Whether the @handle member is valid.
* @valid: Whether the entry is valid, which also implies that the execbuf
* code holds a reference to the resource, and it's placed on the
* validation list.
*
* Used to avoid frequent repeated user-space handle lookups of the
* same resource.
*/
struct vmw_res_cache_entry {
uint32_t handle;
struct vmw_resource *res;
void *private;
unsigned short valid_handle;
unsigned short valid;
};
/**
* enum vmw_dma_map_mode - indicate how to perform TTM page dma mappings.
*/
enum vmw_dma_map_mode {
vmw_dma_phys, /* Use physical page addresses */
vmw_dma_alloc_coherent, /* Use TTM coherent pages */
vmw_dma_map_populate, /* Unmap from DMA just after unpopulate */
vmw_dma_map_bind, /* Unmap from DMA just before unbind */
vmw_dma_map_max
};
/**
* struct vmw_sg_table - Scatter/gather table for binding, with additional
* device-specific information.
*
* @sgt: Pointer to a struct sg_table with binding information
* @num_regions: Number of regions with device-address contiguous pages
*/
struct vmw_sg_table {
enum vmw_dma_map_mode mode;
struct page **pages;
const dma_addr_t *addrs;
struct sg_table *sgt;
unsigned long num_regions;
unsigned long num_pages;
};
/**
* struct vmw_piter - Page iterator that iterates over a list of pages
* and DMA addresses that could be either a scatter-gather list or
* arrays
*
* @pages: Array of page pointers to the pages.
* @addrs: DMA addresses to the pages if coherent pages are used.
* @iter: Scatter-gather page iterator. Current position in SG list.
* @i: Current position in arrays.
* @num_pages: Number of pages total.
* @next: Function to advance the iterator. Returns false if past the list
* of pages, true otherwise.
* @dma_address: Function to return the DMA address of the current page.
*/
struct vmw_piter {
struct page **pages;
const dma_addr_t *addrs;
struct sg_page_iter iter;
unsigned long i;
unsigned long num_pages;
bool (*next)(struct vmw_piter *);
dma_addr_t (*dma_address)(struct vmw_piter *);
struct page *(*page)(struct vmw_piter *);
};
/*
* enum vmw_display_unit_type - Describes the display unit
*/
enum vmw_display_unit_type {
vmw_du_invalid = 0,
vmw_du_legacy,
vmw_du_screen_object,
vmw_du_screen_target
};
struct vmw_validation_context;
struct vmw_ctx_validation_info;
/**
* struct vmw_sw_context - Command submission context
* @res_ht: Pointer hash table used to find validation duplicates
* @kernel: Whether the command buffer originates from kernel code rather
* than from user-space
* @fp: If @kernel is false, points to the file of the client. Otherwise
* NULL
* @cmd_bounce: Command bounce buffer used for command validation before
* copying to fifo space
* @cmd_bounce_size: Current command bounce buffer size
* @cur_query_bo: Current buffer object used as query result buffer
* @bo_relocations: List of buffer object relocations
* @res_relocations: List of resource relocations
* @buf_start: Pointer to start of memory where command validation takes
* place
* @res_cache: Cache of recently looked up resources
* @last_query_ctx: Last context that submitted a query
* @needs_post_query_barrier: Whether a query barrier is needed after
* command submission
* @staged_bindings: Cached per-context binding tracker
* @staged_bindings_inuse: Whether the cached per-context binding tracker
* is in use
* @staged_cmd_res: List of staged command buffer managed resources in this
* command buffer
* @ctx_list: List of context resources referenced in this command buffer
* @dx_ctx_node: Validation metadata of the current DX context
* @dx_query_mob: The MOB used for DX queries
* @dx_query_ctx: The DX context used for the last DX query
* @man: Pointer to the command buffer managed resource manager
* @ctx: The validation context
*/
struct vmw_sw_context{
struct drm_open_hash res_ht;
bool res_ht_initialized;
bool kernel;
struct vmw_fpriv *fp;
uint32_t *cmd_bounce;
uint32_t cmd_bounce_size;
struct vmw_buffer_object *cur_query_bo;
struct list_head bo_relocations;
struct list_head res_relocations;
uint32_t *buf_start;
struct vmw_res_cache_entry res_cache[vmw_res_max];
struct vmw_resource *last_query_ctx;
bool needs_post_query_barrier;
struct vmw_ctx_binding_state *staged_bindings;
bool staged_bindings_inuse;
struct list_head staged_cmd_res;
struct list_head ctx_list;
struct vmw_ctx_validation_info *dx_ctx_node;
struct vmw_buffer_object *dx_query_mob;
struct vmw_resource *dx_query_ctx;
struct vmw_cmdbuf_res_manager *man;
struct vmw_validation_context *ctx;
};
struct vmw_legacy_display;
struct vmw_overlay;
struct vmw_master {
struct ttm_lock lock;
};
struct vmw_vga_topology_state {
uint32_t width;
uint32_t height;
uint32_t primary;
uint32_t pos_x;
uint32_t pos_y;
};
/*
* struct vmw_otable - Guest Memory OBject table metadata
*
* @size: Size of the table (page-aligned).
* @page_table: Pointer to a struct vmw_mob holding the page table.
*/
struct vmw_otable {
unsigned long size;
struct vmw_mob *page_table;
bool enabled;
};
struct vmw_otable_batch {
unsigned num_otables;
struct vmw_otable *otables;
struct vmw_resource *context;
struct ttm_buffer_object *otable_bo;
};
enum {
VMW_IRQTHREAD_FENCE,
VMW_IRQTHREAD_CMDBUF,
VMW_IRQTHREAD_MAX
};
struct vmw_private {
struct ttm_bo_device bdev;
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 prim_bb_mem;
uint32_t mmio_start;
uint32_t mmio_size;
uint32_t fb_max_width;
uint32_t fb_max_height;
uint32_t texture_max_width;
uint32_t texture_max_height;
uint32_t stdu_max_width;
uint32_t stdu_max_height;
uint32_t initial_width;
uint32_t initial_height;
u32 *mmio_virt;
uint32_t capabilities;
uint32_t capabilities2;
uint32_t max_gmr_ids;
uint32_t max_gmr_pages;
uint32_t max_mob_pages;
uint32_t max_mob_size;
uint32_t memory_size;
bool has_gmr;
bool has_mob;
spinlock_t hw_lock;
spinlock_t cap_lock;
bool has_dx;
bool assume_16bpp;
bool has_sm4_1;
/*
* 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;
enum vmw_display_unit_type active_display_unit;
struct vmw_legacy_display *ldu_priv;
struct vmw_overlay *overlay_priv;
struct drm_property *hotplug_mode_update_property;
struct drm_property *implicit_placement_property;
struct mutex global_kms_state_mutex;
spinlock_t cursor_lock;
struct drm_atomic_state *suspend_state;
/*
* Context and surface management.
*/
spinlock_t resource_lock;
struct idr res_idr[vmw_res_max];
/*
* 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;
spinlock_t waiter_lock;
int fence_queue_waiters; /* Protected by waiter_lock */
int goal_queue_waiters; /* Protected by waiter_lock */
int cmdbuf_waiters; /* Protected by waiter_lock */
int error_waiters; /* Protected by waiter_lock */
int fifo_queue_waiters; /* Protected by waiter_lock */
uint32_t last_read_seqno;
struct vmw_fence_manager *fman;
uint32_t irq_mask; /* Updates protected by waiter_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;
struct mutex binding_mutex;
/**
* Operating mode.
*/
bool stealth;
bool enable_fb;
spinlock_t svga_lock;
/**
* Master management.
*/
struct vmw_master *active_master;
struct vmw_master fbdev_master;
struct notifier_block pm_nb;
bool refuse_hibernation;
bool suspend_locked;
struct mutex release_mutex;
atomic_t num_fifo_resources;
/*
* Replace this with an rwsem as soon as we have down_xx_interruptible()
*/
struct ttm_lock reservation_sem;
/*
* Query processing. These members
* are protected by the cmdbuf mutex.
*/
struct vmw_buffer_object *dummy_query_bo;
struct vmw_buffer_object *pinned_bo;
uint32_t query_cid;
uint32_t query_cid_valid;
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 res_lru[vmw_res_max];
uint32_t used_memory_size;
/*
* DMA mapping stuff.
*/
enum vmw_dma_map_mode map_mode;
/*
* Guest Backed stuff
*/
struct vmw_otable_batch otable_batch;
struct vmw_cmdbuf_man *cman;
DECLARE_BITMAP(irqthread_pending, VMW_IRQTHREAD_MAX);
/* Validation memory reservation */
struct vmw_validation_mem vvm;
};
static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res)
{
return container_of(res, struct vmw_surface, res);
}
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;
}
/*
* The locking here is fine-grained, so that it is performed once
* for every read- and write operation. This is of course costly, but we
* don't perform much register access in the timing critical paths anyway.
* Instead we have the extra benefit of being sure that we don't forget
* the hw lock around register accesses.
*/
static inline void vmw_write(struct vmw_private *dev_priv,
unsigned int offset, uint32_t value)
{
spin_lock(&dev_priv->hw_lock);
outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
spin_unlock(&dev_priv->hw_lock);
}
static inline uint32_t vmw_read(struct vmw_private *dev_priv,
unsigned int offset)
{
u32 val;
spin_lock(&dev_priv->hw_lock);
outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
spin_unlock(&dev_priv->hw_lock);
return val;
}
extern void vmw_svga_enable(struct vmw_private *dev_priv);
extern void vmw_svga_disable(struct vmw_private *dev_priv);
/**
* GMR utilities - vmwgfx_gmr.c
*/
extern int vmw_gmr_bind(struct vmw_private *dev_priv,
const struct vmw_sg_table *vsgt,
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
*/
struct vmw_user_resource_conv;
extern void vmw_resource_unreference(struct vmw_resource **p_res);
extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
extern struct vmw_resource *
vmw_resource_reference_unless_doomed(struct vmw_resource *res);
extern int vmw_resource_validate(struct vmw_resource *res, bool intr);
extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
bool no_backup);
extern bool vmw_resource_needs_backup(const struct vmw_resource *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_buffer_object **out_buf);
extern int vmw_user_resource_lookup_handle(
struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle,
const struct vmw_user_resource_conv *converter,
struct vmw_resource **p_res);
extern struct vmw_resource *
vmw_user_resource_noref_lookup_handle(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle,
const struct vmw_user_resource_conv *
converter);
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 vmw_resource *res,
bool switch_backup,
struct vmw_buffer_object *new_backup,
unsigned long new_backup_offset);
extern void vmw_query_move_notify(struct ttm_buffer_object *bo,
struct ttm_mem_reg *mem);
extern int vmw_query_readback_all(struct vmw_buffer_object *dx_query_mob);
extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
extern void vmw_resource_unbind_list(struct vmw_buffer_object *vbo);
/**
* vmw_user_resource_noref_release - release a user resource pointer looked up
* without reference
*/
static inline void vmw_user_resource_noref_release(void)
{
ttm_base_object_noref_release();
}
/**
* Buffer object helper functions - vmwgfx_bo.c
*/
extern int vmw_bo_pin_in_placement(struct vmw_private *vmw_priv,
struct vmw_buffer_object *bo,
struct ttm_placement *placement,
bool interruptible);
extern int vmw_bo_pin_in_vram(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
bool interruptible);
extern int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
bool interruptible);
extern int vmw_bo_pin_in_start_of_vram(struct vmw_private *vmw_priv,
struct vmw_buffer_object *bo,
bool interruptible);
extern int vmw_bo_unpin(struct vmw_private *vmw_priv,
struct vmw_buffer_object *bo,
bool interruptible);
extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
SVGAGuestPtr *ptr);
extern void vmw_bo_pin_reserved(struct vmw_buffer_object *bo, bool pin);
extern void vmw_bo_bo_free(struct ttm_buffer_object *bo);
extern int vmw_bo_init(struct vmw_private *dev_priv,
struct vmw_buffer_object *vmw_bo,
size_t size, struct ttm_placement *placement,
bool interuptable,
void (*bo_free)(struct ttm_buffer_object *bo));
extern int vmw_user_bo_verify_access(struct ttm_buffer_object *bo,
struct ttm_object_file *tfile);
extern int vmw_user_bo_alloc(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t size,
bool shareable,
uint32_t *handle,
struct vmw_buffer_object **p_dma_buf,
struct ttm_base_object **p_base);
extern int vmw_user_bo_reference(struct ttm_object_file *tfile,
struct vmw_buffer_object *dma_buf,
uint32_t *handle);
extern int vmw_bo_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_user_bo_lookup(struct ttm_object_file *tfile,
uint32_t id, struct vmw_buffer_object **out,
struct ttm_base_object **base);
extern void vmw_bo_fence_single(struct ttm_buffer_object *bo,
struct vmw_fence_obj *fence);
extern void *vmw_bo_map_and_cache(struct vmw_buffer_object *vbo);
extern void vmw_bo_unmap(struct vmw_buffer_object *vbo);
extern void vmw_bo_move_notify(struct ttm_buffer_object *bo,
struct ttm_mem_reg *mem);
extern void vmw_bo_swap_notify(struct ttm_buffer_object *bo);
extern struct vmw_buffer_object *
vmw_user_bo_noref_lookup(struct ttm_object_file *tfile, u32 handle);
/**
* vmw_user_bo_noref_release - release a buffer object pointer looked up
* without reference
*/
static inline void vmw_user_bo_noref_release(void)
{
ttm_base_object_noref_release();
}
/**
* 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 __poll_t 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_reserve_dx(struct vmw_private *dev_priv, uint32_t bytes, int ctx_id);
extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
extern void vmw_fifo_commit_flush(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_locked(struct vmw_private *, uint32_t reason);
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);
extern int vmw_fifo_flush(struct vmw_private *dev_priv,
bool interruptible);
/**
* TTM glue - vmwgfx_ttm_glue.c
*/
extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
extern void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv,
size_t gran);
/**
* TTM buffer object driver - vmwgfx_ttm_buffer.c
*/
extern const size_t vmw_tt_size;
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_sys_ne_placement;
extern struct ttm_placement vmw_evictable_placement;
extern struct ttm_placement vmw_srf_placement;
extern struct ttm_placement vmw_mob_placement;
extern struct ttm_placement vmw_mob_ne_placement;
extern struct ttm_placement vmw_nonfixed_placement;
extern struct ttm_bo_driver vmw_bo_driver;
extern int vmw_dma_quiescent(struct drm_device *dev);
extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
extern const struct vmw_sg_table *
vmw_bo_sg_table(struct ttm_buffer_object *bo);
extern void vmw_piter_start(struct vmw_piter *viter,
const struct vmw_sg_table *vsgt,
unsigned long p_offs);
/**
* vmw_piter_next - Advance the iterator one page.
*
* @viter: Pointer to the iterator to advance.
*
* Returns false if past the list of pages, true otherwise.
*/
static inline bool vmw_piter_next(struct vmw_piter *viter)
{
return viter->next(viter);
}
/**
* vmw_piter_dma_addr - Return the DMA address of the current page.
*
* @viter: Pointer to the iterator
*
* Returns the DMA address of the page pointed to by @viter.
*/
static inline dma_addr_t vmw_piter_dma_addr(struct vmw_piter *viter)
{
return viter->dma_address(viter);
}
/**
* vmw_piter_page - Return a pointer to the current page.
*
* @viter: Pointer to the iterator
*
* Returns the DMA address of the page pointed to by @viter.
*/
static inline struct page *vmw_piter_page(struct vmw_piter *viter)
{
return viter->page(viter);
}
/**
* Command submission - vmwgfx_execbuf.c
*/
extern int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
struct drm_file *file_priv, size_t size);
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,
uint32_t dx_context_handle,
struct drm_vmw_fence_rep __user
*user_fence_rep,
struct vmw_fence_obj **out_fence,
uint32_t flags);
extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
struct vmw_fence_obj *fence);
extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv);
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,
int32_t out_fence_fd,
struct sync_file *sync_file);
bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd);
/**
* IRQs and wating - vmwgfx_irq.c
*/
extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
uint32_t seqno, bool interruptible,
unsigned long timeout);
extern int vmw_irq_install(struct drm_device *dev, int irq);
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);
extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag,
int *waiter_count);
extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
u32 flag, int *waiter_count);
/**
* 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, unsigned int pipe);
int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe);
void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe);
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_update_layout_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv);
int vmw_kms_suspend(struct drm_device *dev);
int vmw_kms_resume(struct drm_device *dev);
void vmw_kms_lost_device(struct drm_device *dev);
int vmw_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args);
int vmw_dumb_map_offset(struct drm_file *file_priv,
struct drm_device *dev, uint32_t handle,
uint64_t *offset);
int vmw_dumb_destroy(struct drm_file *file_priv,
struct drm_device *dev,
uint32_t handle);
extern int vmw_resource_pin(struct vmw_resource *res, bool interruptible);
extern void vmw_resource_unpin(struct vmw_resource *res);
extern enum vmw_res_type vmw_res_type(const struct vmw_resource *res);
/**
* 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;
/**
* Prime - vmwgfx_prime.c
*/
extern const struct dma_buf_ops vmw_prime_dmabuf_ops;
extern int vmw_prime_fd_to_handle(struct drm_device *dev,
struct drm_file *file_priv,
int fd, u32 *handle);
extern int vmw_prime_handle_to_fd(struct drm_device *dev,
struct drm_file *file_priv,
uint32_t handle, uint32_t flags,
int *prime_fd);
/*
* MemoryOBject management - vmwgfx_mob.c
*/
struct vmw_mob;
extern int vmw_mob_bind(struct vmw_private *dev_priv, struct vmw_mob *mob,
const struct vmw_sg_table *vsgt,
unsigned long num_data_pages, int32_t mob_id);
extern void vmw_mob_unbind(struct vmw_private *dev_priv,
struct vmw_mob *mob);
extern void vmw_mob_destroy(struct vmw_mob *mob);
extern struct vmw_mob *vmw_mob_create(unsigned long data_pages);
extern int vmw_otables_setup(struct vmw_private *dev_priv);
extern void vmw_otables_takedown(struct vmw_private *dev_priv);
/*
* Context management - vmwgfx_context.c
*/
extern const struct vmw_user_resource_conv *user_context_converter;
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_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
extern struct vmw_cmdbuf_res_manager *
vmw_context_res_man(struct vmw_resource *ctx);
extern struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
SVGACOTableType cotable_type);
extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
struct vmw_ctx_binding_state;
extern struct vmw_ctx_binding_state *
vmw_context_binding_state(struct vmw_resource *ctx);
extern void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
bool readback);
extern int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
struct vmw_buffer_object *mob);
extern struct vmw_buffer_object *
vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res);
/*
* Surface management - vmwgfx_surface.c
*/
extern const struct vmw_user_resource_conv *user_surface_converter;
extern void vmw_surface_res_free(struct vmw_resource *res);
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_gb_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_gb_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);
int vmw_surface_gb_priv_define(struct drm_device *dev,
uint32_t user_accounting_size,
SVGA3dSurfaceAllFlags svga3d_flags,
SVGA3dSurfaceFormat format,
bool for_scanout,
uint32_t num_mip_levels,
uint32_t multisample_count,
uint32_t array_size,
struct drm_vmw_size size,
SVGA3dMSPattern multisample_pattern,
SVGA3dMSQualityLevel quality_level,
struct vmw_surface **srf_out);
extern int vmw_gb_surface_define_ext_ioctl(struct drm_device *dev,
void *data,
struct drm_file *file_priv);
extern int vmw_gb_surface_reference_ext_ioctl(struct drm_device *dev,
void *data,
struct drm_file *file_priv);
/*
* Shader management - vmwgfx_shader.c
*/
extern const struct vmw_user_resource_conv *user_shader_converter;
extern int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_shader_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_compat_shader_add(struct vmw_private *dev_priv,
struct vmw_cmdbuf_res_manager *man,
u32 user_key, const void *bytecode,
SVGA3dShaderType shader_type,
size_t size,
struct list_head *list);
extern int vmw_shader_remove(struct vmw_cmdbuf_res_manager *man,
u32 user_key, SVGA3dShaderType shader_type,
struct list_head *list);
extern int vmw_dx_shader_add(struct vmw_cmdbuf_res_manager *man,
struct vmw_resource *ctx,
u32 user_key,
SVGA3dShaderType shader_type,
struct list_head *list);
extern void vmw_dx_shader_cotable_list_scrub(struct vmw_private *dev_priv,
struct list_head *list,
bool readback);
extern struct vmw_resource *
vmw_shader_lookup(struct vmw_cmdbuf_res_manager *man,
u32 user_key, SVGA3dShaderType shader_type);
/*
* Command buffer managed resources - vmwgfx_cmdbuf_res.c
*/
extern struct vmw_cmdbuf_res_manager *
vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv);
extern void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man);
extern size_t vmw_cmdbuf_res_man_size(void);
extern struct vmw_resource *
vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
enum vmw_cmdbuf_res_type res_type,
u32 user_key);
extern void vmw_cmdbuf_res_revert(struct list_head *list);
extern void vmw_cmdbuf_res_commit(struct list_head *list);
extern int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
enum vmw_cmdbuf_res_type res_type,
u32 user_key,
struct vmw_resource *res,
struct list_head *list);
extern int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
enum vmw_cmdbuf_res_type res_type,
u32 user_key,
struct list_head *list,
struct vmw_resource **res);
/*
* COTable management - vmwgfx_cotable.c
*/
extern const SVGACOTableType vmw_cotable_scrub_order[];
extern struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
struct vmw_resource *ctx,
u32 type);
extern int vmw_cotable_notify(struct vmw_resource *res, int id);
extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback);
extern void vmw_cotable_add_resource(struct vmw_resource *ctx,
struct list_head *head);
/*
* Command buffer managerment vmwgfx_cmdbuf.c
*/
struct vmw_cmdbuf_man;
struct vmw_cmdbuf_header;
extern struct vmw_cmdbuf_man *
vmw_cmdbuf_man_create(struct vmw_private *dev_priv);
extern int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
size_t size, size_t default_size);
extern void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man);
extern void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man);
extern int vmw_cmdbuf_idle(struct vmw_cmdbuf_man *man, bool interruptible,
unsigned long timeout);
extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size,
int ctx_id, bool interruptible,
struct vmw_cmdbuf_header *header);
extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size,
struct vmw_cmdbuf_header *header,
bool flush);
extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man,
size_t size, bool interruptible,
struct vmw_cmdbuf_header **p_header);
extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header);
extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man,
bool interruptible);
extern void vmw_cmdbuf_irqthread(struct vmw_cmdbuf_man *man);
/* CPU blit utilities - vmwgfx_blit.c */
/**
* struct vmw_diff_cpy - CPU blit information structure
*
* @rect: The output bounding box rectangle.
* @line: The current line of the blit.
* @line_offset: Offset of the current line segment.
* @cpp: Bytes per pixel (granularity information).
* @memcpy: Which memcpy function to use.
*/
struct vmw_diff_cpy {
struct drm_rect rect;
size_t line;
size_t line_offset;
int cpp;
void (*do_cpy)(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src,
size_t n);
};
#define VMW_CPU_BLIT_INITIALIZER { \
.do_cpy = vmw_memcpy, \
}
#define VMW_CPU_BLIT_DIFF_INITIALIZER(_cpp) { \
.line = 0, \
.line_offset = 0, \
.rect = { .x1 = INT_MAX/2, \
.y1 = INT_MAX/2, \
.x2 = INT_MIN/2, \
.y2 = INT_MIN/2 \
}, \
.cpp = _cpp, \
.do_cpy = vmw_diff_memcpy, \
}
void vmw_diff_memcpy(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src,
size_t n);
void vmw_memcpy(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src, size_t n);
int vmw_bo_cpu_blit(struct ttm_buffer_object *dst,
u32 dst_offset, u32 dst_stride,
struct ttm_buffer_object *src,
u32 src_offset, u32 src_stride,
u32 w, u32 h,
struct vmw_diff_cpy *diff);
/* Host messaging -vmwgfx_msg.c: */
int vmw_host_get_guestinfo(const char *guest_info_param,
char *buffer, size_t *length);
int vmw_host_log(const char *log);
/**
* 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_bo_unreference(struct vmw_buffer_object **buf)
{
struct vmw_buffer_object *tmp_buf = *buf;
*buf = NULL;
if (tmp_buf != NULL) {
ttm_bo_put(&tmp_buf->base);
}
}
static inline struct vmw_buffer_object *
vmw_bo_reference(struct vmw_buffer_object *buf)
{
ttm_bo_get(&buf->base);
return buf;
}
static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
{
return &ttm_mem_glob;
}
static inline void vmw_fifo_resource_inc(struct vmw_private *dev_priv)
{
atomic_inc(&dev_priv->num_fifo_resources);
}
static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv)
{
atomic_dec(&dev_priv->num_fifo_resources);
}
/**
* vmw_mmio_read - Perform a MMIO read from volatile memory
*
* @addr: The address to read from
*
* This function is intended to be equivalent to ioread32() on
* memremap'd memory, but without byteswapping.
*/
static inline u32 vmw_mmio_read(u32 *addr)
{
return READ_ONCE(*addr);
}
/**
* vmw_mmio_write - Perform a MMIO write to volatile memory
*
* @addr: The address to write to
*
* This function is intended to be equivalent to iowrite32 on
* memremap'd memory, but without byteswapping.
*/
static inline void vmw_mmio_write(u32 value, u32 *addr)
{
WRITE_ONCE(*addr, value);
}
#endif