1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2 /**************************************************************************
4 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #ifndef _VMWGFX_DRV_H_
29 #define _VMWGFX_DRV_H_
31 #include "vmwgfx_validation.h"
32 #include "vmwgfx_reg.h"
34 #include <drm/vmwgfx_drm.h>
35 #include <drm/drm_hashtab.h>
36 #include <drm/drm_auth.h>
37 #include <linux/suspend.h>
38 #include <drm/ttm/ttm_bo_driver.h>
39 #include <drm/ttm/ttm_execbuf_util.h>
40 #include <drm/ttm/ttm_module.h>
41 #include "vmwgfx_fence.h"
42 #include "ttm_object.h"
44 #include <linux/sync_file.h>
46 #define VMWGFX_DRIVER_NAME "vmwgfx"
47 #define VMWGFX_DRIVER_DATE "20180704"
48 #define VMWGFX_DRIVER_MAJOR 2
49 #define VMWGFX_DRIVER_MINOR 15
50 #define VMWGFX_DRIVER_PATCHLEVEL 0
51 #define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
52 #define VMWGFX_MAX_RELOCATIONS 2048
53 #define VMWGFX_MAX_VALIDATIONS 2048
54 #define VMWGFX_MAX_DISPLAYS 16
55 #define VMWGFX_CMD_BOUNCE_INIT_SIZE 32768
56 #define VMWGFX_ENABLE_SCREEN_TARGET_OTABLE 1
59 * Perhaps we should have sysfs entries for these.
61 #define VMWGFX_NUM_GB_CONTEXT 256
62 #define VMWGFX_NUM_GB_SHADER 20000
63 #define VMWGFX_NUM_GB_SURFACE 32768
64 #define VMWGFX_NUM_GB_SCREEN_TARGET VMWGFX_MAX_DISPLAYS
65 #define VMWGFX_NUM_DXCONTEXT 256
66 #define VMWGFX_NUM_DXQUERY 512
67 #define VMWGFX_NUM_MOB (VMWGFX_NUM_GB_CONTEXT +\
68 VMWGFX_NUM_GB_SHADER +\
69 VMWGFX_NUM_GB_SURFACE +\
70 VMWGFX_NUM_GB_SCREEN_TARGET)
72 #define VMW_PL_GMR (TTM_PL_PRIV + 0)
73 #define VMW_PL_FLAG_GMR (TTM_PL_FLAG_PRIV << 0)
74 #define VMW_PL_MOB (TTM_PL_PRIV + 1)
75 #define VMW_PL_FLAG_MOB (TTM_PL_FLAG_PRIV << 1)
77 #define VMW_RES_CONTEXT ttm_driver_type0
78 #define VMW_RES_SURFACE ttm_driver_type1
79 #define VMW_RES_STREAM ttm_driver_type2
80 #define VMW_RES_FENCE ttm_driver_type3
81 #define VMW_RES_SHADER ttm_driver_type4
84 struct drm_master *locked_master;
85 struct ttm_object_file *tfile;
86 bool gb_aware; /* user-space is guest-backed aware */
89 struct vmw_buffer_object {
90 struct ttm_buffer_object base;
91 struct list_head res_list;
93 /* Not ref-counted. Protected by binding_mutex */
94 struct vmw_resource *dx_query_ctx;
95 /* Protected by reservation */
96 struct ttm_bo_kmap_obj map;
100 * struct vmw_validate_buffer - Carries validation info about buffers.
102 * @base: Validation info for TTM.
103 * @hash: Hash entry for quick lookup of the TTM buffer object.
105 * This structure contains also driver private validation info
106 * on top of the info needed by TTM.
108 struct vmw_validate_buffer {
109 struct ttm_validate_buffer base;
110 struct drm_hash_item hash;
111 bool validate_as_mob;
118 * struct vmw-resource - base class for hardware resources
120 * @kref: For refcounting.
121 * @dev_priv: Pointer to the device private for this resource. Immutable.
122 * @id: Device id. Protected by @dev_priv::resource_lock.
123 * @backup_size: Backup buffer size. Immutable.
124 * @res_dirty: Resource contains data not yet in the backup buffer. Protected
125 * by resource reserved.
126 * @backup_dirty: Backup buffer contains data not yet in the HW resource.
127 * Protecte by resource reserved.
128 * @backup: The backup buffer if any. Protected by resource reserved.
129 * @backup_offset: Offset into the backup buffer if any. Protected by resource
130 * reserved. Note that only a few resource types can have a @backup_offset
131 * different from zero.
132 * @pin_count: The pin count for this resource. A pinned resource has a
133 * pin-count greater than zero. It is not on the resource LRU lists and its
134 * backup buffer is pinned. Hence it can't be evicted.
135 * @func: Method vtable for this resource. Immutable.
136 * @lru_head: List head for the LRU list. Protected by @dev_priv::resource_lock.
137 * @mob_head: List head for the MOB backup list. Protected by @backup reserved.
138 * @binding_head: List head for the context binding list. Protected by
139 * the @dev_priv::binding_mutex
140 * @res_free: The resource destructor.
141 * @hw_destroy: Callback to destroy the resource on the device, as part of
142 * resource destruction.
144 struct vmw_resource {
146 struct vmw_private *dev_priv;
148 unsigned long backup_size;
151 struct vmw_buffer_object *backup;
152 unsigned long backup_offset;
153 unsigned long pin_count;
154 const struct vmw_res_func *func;
155 struct list_head lru_head;
156 struct list_head mob_head;
157 struct list_head binding_head;
158 void (*res_free) (struct vmw_resource *res);
159 void (*hw_destroy) (struct vmw_resource *res);
164 * Resources that are managed using ioctls.
178 * Resources that are managed using command streams.
180 enum vmw_cmdbuf_res_type {
181 vmw_cmdbuf_res_shader,
185 struct vmw_cmdbuf_res_manager;
187 struct vmw_cursor_snooper {
192 struct vmw_framebuffer;
193 struct vmw_surface_offset;
196 struct vmw_resource res;
197 SVGA3dSurfaceAllFlags flags;
199 uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
200 struct drm_vmw_size base_size;
201 struct drm_vmw_size *sizes;
205 /* TODO so far just a extra pointer */
206 struct vmw_cursor_snooper snooper;
207 struct vmw_surface_offset *offsets;
208 SVGA3dTextureFilter autogen_filter;
209 uint32_t multisample_count;
210 struct list_head view_list;
211 SVGA3dMSPattern multisample_pattern;
212 SVGA3dMSQualityLevel quality_level;
215 struct vmw_marker_queue {
216 struct list_head head;
222 struct vmw_fifo_state {
223 unsigned long reserved_size;
226 unsigned long static_buffer_size;
227 bool using_bounce_buffer;
228 uint32_t capabilities;
229 struct mutex fifo_mutex;
230 struct rw_semaphore rwsem;
231 struct vmw_marker_queue marker_queue;
236 * struct vmw_res_cache_entry - resource information cache entry
237 * @handle: User-space handle of a resource.
238 * @res: Non-ref-counted pointer to the resource.
239 * @valid_handle: Whether the @handle member is valid.
240 * @valid: Whether the entry is valid, which also implies that the execbuf
241 * code holds a reference to the resource, and it's placed on the
244 * Used to avoid frequent repeated user-space handle lookups of the
247 struct vmw_res_cache_entry {
249 struct vmw_resource *res;
251 unsigned short valid_handle;
252 unsigned short valid;
256 * enum vmw_dma_map_mode - indicate how to perform TTM page dma mappings.
258 enum vmw_dma_map_mode {
259 vmw_dma_phys, /* Use physical page addresses */
260 vmw_dma_alloc_coherent, /* Use TTM coherent pages */
261 vmw_dma_map_populate, /* Unmap from DMA just after unpopulate */
262 vmw_dma_map_bind, /* Unmap from DMA just before unbind */
267 * struct vmw_sg_table - Scatter/gather table for binding, with additional
268 * device-specific information.
270 * @sgt: Pointer to a struct sg_table with binding information
271 * @num_regions: Number of regions with device-address contiguous pages
273 struct vmw_sg_table {
274 enum vmw_dma_map_mode mode;
276 const dma_addr_t *addrs;
277 struct sg_table *sgt;
278 unsigned long num_regions;
279 unsigned long num_pages;
283 * struct vmw_piter - Page iterator that iterates over a list of pages
284 * and DMA addresses that could be either a scatter-gather list or
287 * @pages: Array of page pointers to the pages.
288 * @addrs: DMA addresses to the pages if coherent pages are used.
289 * @iter: Scatter-gather page iterator. Current position in SG list.
290 * @i: Current position in arrays.
291 * @num_pages: Number of pages total.
292 * @next: Function to advance the iterator. Returns false if past the list
293 * of pages, true otherwise.
294 * @dma_address: Function to return the DMA address of the current page.
298 const dma_addr_t *addrs;
299 struct sg_dma_page_iter iter;
301 unsigned long num_pages;
302 bool (*next)(struct vmw_piter *);
303 dma_addr_t (*dma_address)(struct vmw_piter *);
304 struct page *(*page)(struct vmw_piter *);
308 * enum vmw_display_unit_type - Describes the display unit
310 enum vmw_display_unit_type {
313 vmw_du_screen_object,
317 struct vmw_validation_context;
318 struct vmw_ctx_validation_info;
321 * struct vmw_sw_context - Command submission context
322 * @res_ht: Pointer hash table used to find validation duplicates
323 * @kernel: Whether the command buffer originates from kernel code rather
324 * than from user-space
325 * @fp: If @kernel is false, points to the file of the client. Otherwise
327 * @cmd_bounce: Command bounce buffer used for command validation before
328 * copying to fifo space
329 * @cmd_bounce_size: Current command bounce buffer size
330 * @cur_query_bo: Current buffer object used as query result buffer
331 * @bo_relocations: List of buffer object relocations
332 * @res_relocations: List of resource relocations
333 * @buf_start: Pointer to start of memory where command validation takes
335 * @res_cache: Cache of recently looked up resources
336 * @last_query_ctx: Last context that submitted a query
337 * @needs_post_query_barrier: Whether a query barrier is needed after
339 * @staged_bindings: Cached per-context binding tracker
340 * @staged_bindings_inuse: Whether the cached per-context binding tracker
342 * @staged_cmd_res: List of staged command buffer managed resources in this
344 * @ctx_list: List of context resources referenced in this command buffer
345 * @dx_ctx_node: Validation metadata of the current DX context
346 * @dx_query_mob: The MOB used for DX queries
347 * @dx_query_ctx: The DX context used for the last DX query
348 * @man: Pointer to the command buffer managed resource manager
349 * @ctx: The validation context
351 struct vmw_sw_context{
352 struct drm_open_hash res_ht;
353 bool res_ht_initialized;
355 struct vmw_fpriv *fp;
356 uint32_t *cmd_bounce;
357 uint32_t cmd_bounce_size;
358 struct vmw_buffer_object *cur_query_bo;
359 struct list_head bo_relocations;
360 struct list_head res_relocations;
362 struct vmw_res_cache_entry res_cache[vmw_res_max];
363 struct vmw_resource *last_query_ctx;
364 bool needs_post_query_barrier;
365 struct vmw_ctx_binding_state *staged_bindings;
366 bool staged_bindings_inuse;
367 struct list_head staged_cmd_res;
368 struct list_head ctx_list;
369 struct vmw_ctx_validation_info *dx_ctx_node;
370 struct vmw_buffer_object *dx_query_mob;
371 struct vmw_resource *dx_query_ctx;
372 struct vmw_cmdbuf_res_manager *man;
373 struct vmw_validation_context *ctx;
376 struct vmw_legacy_display;
380 struct ttm_lock lock;
383 struct vmw_vga_topology_state {
393 * struct vmw_otable - Guest Memory OBject table metadata
395 * @size: Size of the table (page-aligned).
396 * @page_table: Pointer to a struct vmw_mob holding the page table.
400 struct vmw_mob *page_table;
404 struct vmw_otable_batch {
405 unsigned num_otables;
406 struct vmw_otable *otables;
407 struct vmw_resource *context;
408 struct ttm_buffer_object *otable_bo;
413 VMW_IRQTHREAD_CMDBUF,
418 struct ttm_bo_device bdev;
420 struct vmw_fifo_state fifo;
422 struct drm_device *dev;
423 unsigned long vmw_chipset;
424 unsigned int io_start;
427 uint32_t prim_bb_mem;
430 uint32_t fb_max_width;
431 uint32_t fb_max_height;
432 uint32_t texture_max_width;
433 uint32_t texture_max_height;
434 uint32_t stdu_max_width;
435 uint32_t stdu_max_height;
436 uint32_t initial_width;
437 uint32_t initial_height;
439 uint32_t capabilities;
440 uint32_t capabilities2;
441 uint32_t max_gmr_ids;
442 uint32_t max_gmr_pages;
443 uint32_t max_mob_pages;
444 uint32_t max_mob_size;
445 uint32_t memory_size;
458 struct vmw_vga_topology_state vga_save[VMWGFX_MAX_DISPLAYS];
463 uint32_t vga_pitchlock;
465 uint32_t num_displays;
472 enum vmw_display_unit_type active_display_unit;
473 struct vmw_legacy_display *ldu_priv;
474 struct vmw_overlay *overlay_priv;
475 struct drm_property *hotplug_mode_update_property;
476 struct drm_property *implicit_placement_property;
477 struct mutex global_kms_state_mutex;
478 spinlock_t cursor_lock;
479 struct drm_atomic_state *suspend_state;
482 * Context and surface management.
485 spinlock_t resource_lock;
486 struct idr res_idr[vmw_res_max];
488 * Block lastclose from racing with firstopen.
491 struct mutex init_mutex;
494 * A resource manager for kernel-only surfaces and
498 struct ttm_object_device *tdev;
505 wait_queue_head_t fence_queue;
506 wait_queue_head_t fifo_queue;
507 spinlock_t waiter_lock;
508 int fence_queue_waiters; /* Protected by waiter_lock */
509 int goal_queue_waiters; /* Protected by waiter_lock */
510 int cmdbuf_waiters; /* Protected by waiter_lock */
511 int error_waiters; /* Protected by waiter_lock */
512 int fifo_queue_waiters; /* Protected by waiter_lock */
513 uint32_t last_read_seqno;
514 struct vmw_fence_manager *fman;
515 uint32_t irq_mask; /* Updates protected by waiter_lock */
521 uint32_t traces_state;
522 uint32_t enable_state;
523 uint32_t config_done_state;
529 * Protected by the cmdbuf mutex.
532 struct vmw_sw_context ctx;
533 struct mutex cmdbuf_mutex;
534 struct mutex binding_mutex;
542 spinlock_t svga_lock;
548 struct vmw_master *active_master;
549 struct vmw_master fbdev_master;
550 struct notifier_block pm_nb;
551 bool refuse_hibernation;
554 struct mutex release_mutex;
555 atomic_t num_fifo_resources;
558 * Replace this with an rwsem as soon as we have down_xx_interruptible()
560 struct ttm_lock reservation_sem;
563 * Query processing. These members
564 * are protected by the cmdbuf mutex.
567 struct vmw_buffer_object *dummy_query_bo;
568 struct vmw_buffer_object *pinned_bo;
570 uint32_t query_cid_valid;
571 bool dummy_query_bo_pinned;
574 * Surface swapping. The "surface_lru" list is protected by the
575 * resource lock in order to be able to destroy a surface and take
576 * it off the lru atomically. "used_memory_size" is currently
577 * protected by the cmdbuf mutex for simplicity.
580 struct list_head res_lru[vmw_res_max];
581 uint32_t used_memory_size;
586 enum vmw_dma_map_mode map_mode;
591 struct vmw_otable_batch otable_batch;
593 struct vmw_cmdbuf_man *cman;
594 DECLARE_BITMAP(irqthread_pending, VMW_IRQTHREAD_MAX);
596 /* Validation memory reservation */
597 struct vmw_validation_mem vvm;
600 static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res)
602 return container_of(res, struct vmw_surface, res);
605 static inline struct vmw_private *vmw_priv(struct drm_device *dev)
607 return (struct vmw_private *)dev->dev_private;
610 static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv)
612 return (struct vmw_fpriv *)file_priv->driver_priv;
615 static inline struct vmw_master *vmw_master(struct drm_master *master)
617 return (struct vmw_master *) master->driver_priv;
621 * The locking here is fine-grained, so that it is performed once
622 * for every read- and write operation. This is of course costly, but we
623 * don't perform much register access in the timing critical paths anyway.
624 * Instead we have the extra benefit of being sure that we don't forget
625 * the hw lock around register accesses.
627 static inline void vmw_write(struct vmw_private *dev_priv,
628 unsigned int offset, uint32_t value)
630 spin_lock(&dev_priv->hw_lock);
631 outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
632 outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
633 spin_unlock(&dev_priv->hw_lock);
636 static inline uint32_t vmw_read(struct vmw_private *dev_priv,
641 spin_lock(&dev_priv->hw_lock);
642 outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
643 val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
644 spin_unlock(&dev_priv->hw_lock);
649 extern void vmw_svga_enable(struct vmw_private *dev_priv);
650 extern void vmw_svga_disable(struct vmw_private *dev_priv);
654 * GMR utilities - vmwgfx_gmr.c
657 extern int vmw_gmr_bind(struct vmw_private *dev_priv,
658 const struct vmw_sg_table *vsgt,
659 unsigned long num_pages,
661 extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id);
664 * Resource utilities - vmwgfx_resource.c
666 struct vmw_user_resource_conv;
668 extern void vmw_resource_unreference(struct vmw_resource **p_res);
669 extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
670 extern struct vmw_resource *
671 vmw_resource_reference_unless_doomed(struct vmw_resource *res);
672 extern int vmw_resource_validate(struct vmw_resource *res, bool intr);
673 extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
675 extern bool vmw_resource_needs_backup(const struct vmw_resource *res);
676 extern int vmw_user_lookup_handle(struct vmw_private *dev_priv,
677 struct ttm_object_file *tfile,
679 struct vmw_surface **out_surf,
680 struct vmw_buffer_object **out_buf);
681 extern int vmw_user_resource_lookup_handle(
682 struct vmw_private *dev_priv,
683 struct ttm_object_file *tfile,
685 const struct vmw_user_resource_conv *converter,
686 struct vmw_resource **p_res);
687 extern struct vmw_resource *
688 vmw_user_resource_noref_lookup_handle(struct vmw_private *dev_priv,
689 struct ttm_object_file *tfile,
691 const struct vmw_user_resource_conv *
693 extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
694 struct drm_file *file_priv);
695 extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
696 struct drm_file *file_priv);
697 extern int vmw_user_stream_lookup(struct vmw_private *dev_priv,
698 struct ttm_object_file *tfile,
700 struct vmw_resource **out);
701 extern void vmw_resource_unreserve(struct vmw_resource *res,
705 struct vmw_buffer_object *new_backup,
706 unsigned long new_backup_offset);
707 extern void vmw_query_move_notify(struct ttm_buffer_object *bo,
708 struct ttm_mem_reg *mem);
709 extern int vmw_query_readback_all(struct vmw_buffer_object *dx_query_mob);
710 extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
711 extern void vmw_resource_unbind_list(struct vmw_buffer_object *vbo);
714 * vmw_user_resource_noref_release - release a user resource pointer looked up
717 static inline void vmw_user_resource_noref_release(void)
719 ttm_base_object_noref_release();
723 * Buffer object helper functions - vmwgfx_bo.c
725 extern int vmw_bo_pin_in_placement(struct vmw_private *vmw_priv,
726 struct vmw_buffer_object *bo,
727 struct ttm_placement *placement,
729 extern int vmw_bo_pin_in_vram(struct vmw_private *dev_priv,
730 struct vmw_buffer_object *buf,
732 extern int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
733 struct vmw_buffer_object *buf,
735 extern int vmw_bo_pin_in_start_of_vram(struct vmw_private *vmw_priv,
736 struct vmw_buffer_object *bo,
738 extern int vmw_bo_unpin(struct vmw_private *vmw_priv,
739 struct vmw_buffer_object *bo,
741 extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
743 extern void vmw_bo_pin_reserved(struct vmw_buffer_object *bo, bool pin);
744 extern void vmw_bo_bo_free(struct ttm_buffer_object *bo);
745 extern int vmw_bo_init(struct vmw_private *dev_priv,
746 struct vmw_buffer_object *vmw_bo,
747 size_t size, struct ttm_placement *placement,
749 void (*bo_free)(struct ttm_buffer_object *bo));
750 extern int vmw_user_bo_verify_access(struct ttm_buffer_object *bo,
751 struct ttm_object_file *tfile);
752 extern int vmw_user_bo_alloc(struct vmw_private *dev_priv,
753 struct ttm_object_file *tfile,
757 struct vmw_buffer_object **p_dma_buf,
758 struct ttm_base_object **p_base);
759 extern int vmw_user_bo_reference(struct ttm_object_file *tfile,
760 struct vmw_buffer_object *dma_buf,
762 extern int vmw_bo_alloc_ioctl(struct drm_device *dev, void *data,
763 struct drm_file *file_priv);
764 extern int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
765 struct drm_file *file_priv);
766 extern int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
767 struct drm_file *file_priv);
768 extern int vmw_user_bo_lookup(struct ttm_object_file *tfile,
769 uint32_t id, struct vmw_buffer_object **out,
770 struct ttm_base_object **base);
771 extern void vmw_bo_fence_single(struct ttm_buffer_object *bo,
772 struct vmw_fence_obj *fence);
773 extern void *vmw_bo_map_and_cache(struct vmw_buffer_object *vbo);
774 extern void vmw_bo_unmap(struct vmw_buffer_object *vbo);
775 extern void vmw_bo_move_notify(struct ttm_buffer_object *bo,
776 struct ttm_mem_reg *mem);
777 extern void vmw_bo_swap_notify(struct ttm_buffer_object *bo);
778 extern struct vmw_buffer_object *
779 vmw_user_bo_noref_lookup(struct ttm_object_file *tfile, u32 handle);
782 * vmw_user_bo_noref_release - release a buffer object pointer looked up
785 static inline void vmw_user_bo_noref_release(void)
787 ttm_base_object_noref_release();
792 * Misc Ioctl functionality - vmwgfx_ioctl.c
795 extern int vmw_getparam_ioctl(struct drm_device *dev, void *data,
796 struct drm_file *file_priv);
797 extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
798 struct drm_file *file_priv);
799 extern int vmw_present_ioctl(struct drm_device *dev, void *data,
800 struct drm_file *file_priv);
801 extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
802 struct drm_file *file_priv);
803 extern __poll_t vmw_fops_poll(struct file *filp,
804 struct poll_table_struct *wait);
805 extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
806 size_t count, loff_t *offset);
809 * Fifo utilities - vmwgfx_fifo.c
812 extern int vmw_fifo_init(struct vmw_private *dev_priv,
813 struct vmw_fifo_state *fifo);
814 extern void vmw_fifo_release(struct vmw_private *dev_priv,
815 struct vmw_fifo_state *fifo);
817 vmw_fifo_reserve_dx(struct vmw_private *dev_priv, uint32_t bytes, int ctx_id);
818 extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
819 extern void vmw_fifo_commit_flush(struct vmw_private *dev_priv, uint32_t bytes);
820 extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
822 extern void vmw_fifo_ping_host_locked(struct vmw_private *, uint32_t reason);
823 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
824 extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
825 extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
826 extern int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
828 extern int vmw_fifo_flush(struct vmw_private *dev_priv,
831 #define VMW_FIFO_RESERVE_DX(__priv, __bytes, __ctx_id) \
833 vmw_fifo_reserve_dx(__priv, __bytes, __ctx_id) ? : ({ \
834 DRM_ERROR("FIFO reserve failed at %s for %u bytes\n", \
835 __func__, (unsigned int) __bytes); \
840 #define VMW_FIFO_RESERVE(__priv, __bytes) \
841 VMW_FIFO_RESERVE_DX(__priv, __bytes, SVGA3D_INVALID_ID)
844 * TTM glue - vmwgfx_ttm_glue.c
847 extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
849 extern void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv,
852 * TTM buffer object driver - vmwgfx_ttm_buffer.c
855 extern const size_t vmw_tt_size;
856 extern struct ttm_placement vmw_vram_placement;
857 extern struct ttm_placement vmw_vram_ne_placement;
858 extern struct ttm_placement vmw_vram_sys_placement;
859 extern struct ttm_placement vmw_vram_gmr_placement;
860 extern struct ttm_placement vmw_vram_gmr_ne_placement;
861 extern struct ttm_placement vmw_sys_placement;
862 extern struct ttm_placement vmw_sys_ne_placement;
863 extern struct ttm_placement vmw_evictable_placement;
864 extern struct ttm_placement vmw_srf_placement;
865 extern struct ttm_placement vmw_mob_placement;
866 extern struct ttm_placement vmw_mob_ne_placement;
867 extern struct ttm_placement vmw_nonfixed_placement;
868 extern struct ttm_bo_driver vmw_bo_driver;
869 extern int vmw_dma_quiescent(struct drm_device *dev);
870 extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
871 extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
872 extern const struct vmw_sg_table *
873 vmw_bo_sg_table(struct ttm_buffer_object *bo);
874 extern void vmw_piter_start(struct vmw_piter *viter,
875 const struct vmw_sg_table *vsgt,
876 unsigned long p_offs);
879 * vmw_piter_next - Advance the iterator one page.
881 * @viter: Pointer to the iterator to advance.
883 * Returns false if past the list of pages, true otherwise.
885 static inline bool vmw_piter_next(struct vmw_piter *viter)
887 return viter->next(viter);
891 * vmw_piter_dma_addr - Return the DMA address of the current page.
893 * @viter: Pointer to the iterator
895 * Returns the DMA address of the page pointed to by @viter.
897 static inline dma_addr_t vmw_piter_dma_addr(struct vmw_piter *viter)
899 return viter->dma_address(viter);
903 * vmw_piter_page - Return a pointer to the current page.
905 * @viter: Pointer to the iterator
907 * Returns the DMA address of the page pointed to by @viter.
909 static inline struct page *vmw_piter_page(struct vmw_piter *viter)
911 return viter->page(viter);
915 * Command submission - vmwgfx_execbuf.c
918 extern int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
919 struct drm_file *file_priv, size_t size);
920 extern int vmw_execbuf_process(struct drm_file *file_priv,
921 struct vmw_private *dev_priv,
922 void __user *user_commands,
923 void *kernel_commands,
924 uint32_t command_size,
925 uint64_t throttle_us,
926 uint32_t dx_context_handle,
927 struct drm_vmw_fence_rep __user
929 struct vmw_fence_obj **out_fence,
931 extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
932 struct vmw_fence_obj *fence);
933 extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv);
935 extern int vmw_execbuf_fence_commands(struct drm_file *file_priv,
936 struct vmw_private *dev_priv,
937 struct vmw_fence_obj **p_fence,
939 extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
940 struct vmw_fpriv *vmw_fp,
942 struct drm_vmw_fence_rep __user
944 struct vmw_fence_obj *fence,
945 uint32_t fence_handle,
946 int32_t out_fence_fd,
947 struct sync_file *sync_file);
948 bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd);
951 * IRQs and wating - vmwgfx_irq.c
954 extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
955 uint32_t seqno, bool interruptible,
956 unsigned long timeout);
957 extern int vmw_irq_install(struct drm_device *dev, int irq);
958 extern void vmw_irq_uninstall(struct drm_device *dev);
959 extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
961 extern int vmw_fallback_wait(struct vmw_private *dev_priv,
966 unsigned long timeout);
967 extern void vmw_update_seqno(struct vmw_private *dev_priv,
968 struct vmw_fifo_state *fifo_state);
969 extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
970 extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
971 extern void vmw_goal_waiter_add(struct vmw_private *dev_priv);
972 extern void vmw_goal_waiter_remove(struct vmw_private *dev_priv);
973 extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag,
975 extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
976 u32 flag, int *waiter_count);
979 * Rudimentary fence-like objects currently used only for throttling -
983 extern void vmw_marker_queue_init(struct vmw_marker_queue *queue);
984 extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue);
985 extern int vmw_marker_push(struct vmw_marker_queue *queue,
987 extern int vmw_marker_pull(struct vmw_marker_queue *queue,
988 uint32_t signaled_seqno);
989 extern int vmw_wait_lag(struct vmw_private *dev_priv,
990 struct vmw_marker_queue *queue, uint32_t us);
993 * Kernel framebuffer - vmwgfx_fb.c
996 int vmw_fb_init(struct vmw_private *vmw_priv);
997 int vmw_fb_close(struct vmw_private *dev_priv);
998 int vmw_fb_off(struct vmw_private *vmw_priv);
999 int vmw_fb_on(struct vmw_private *vmw_priv);
1002 * Kernel modesetting - vmwgfx_kms.c
1005 int vmw_kms_init(struct vmw_private *dev_priv);
1006 int vmw_kms_close(struct vmw_private *dev_priv);
1007 int vmw_kms_save_vga(struct vmw_private *vmw_priv);
1008 int vmw_kms_restore_vga(struct vmw_private *vmw_priv);
1009 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1010 struct drm_file *file_priv);
1011 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv);
1012 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
1013 struct ttm_object_file *tfile,
1014 struct ttm_buffer_object *bo,
1015 SVGA3dCmdHeader *header);
1016 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1017 unsigned width, unsigned height, unsigned pitch,
1018 unsigned bpp, unsigned depth);
1019 void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
1020 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1023 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
1024 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe);
1025 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe);
1026 int vmw_kms_present(struct vmw_private *dev_priv,
1027 struct drm_file *file_priv,
1028 struct vmw_framebuffer *vfb,
1029 struct vmw_surface *surface,
1030 uint32_t sid, int32_t destX, int32_t destY,
1031 struct drm_vmw_rect *clips,
1032 uint32_t num_clips);
1033 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1034 struct drm_file *file_priv);
1035 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv);
1036 int vmw_kms_suspend(struct drm_device *dev);
1037 int vmw_kms_resume(struct drm_device *dev);
1038 void vmw_kms_lost_device(struct drm_device *dev);
1040 int vmw_dumb_create(struct drm_file *file_priv,
1041 struct drm_device *dev,
1042 struct drm_mode_create_dumb *args);
1044 int vmw_dumb_map_offset(struct drm_file *file_priv,
1045 struct drm_device *dev, uint32_t handle,
1047 int vmw_dumb_destroy(struct drm_file *file_priv,
1048 struct drm_device *dev,
1050 extern int vmw_resource_pin(struct vmw_resource *res, bool interruptible);
1051 extern void vmw_resource_unpin(struct vmw_resource *res);
1052 extern enum vmw_res_type vmw_res_type(const struct vmw_resource *res);
1055 * Overlay control - vmwgfx_overlay.c
1058 int vmw_overlay_init(struct vmw_private *dev_priv);
1059 int vmw_overlay_close(struct vmw_private *dev_priv);
1060 int vmw_overlay_ioctl(struct drm_device *dev, void *data,
1061 struct drm_file *file_priv);
1062 int vmw_overlay_stop_all(struct vmw_private *dev_priv);
1063 int vmw_overlay_resume_all(struct vmw_private *dev_priv);
1064 int vmw_overlay_pause_all(struct vmw_private *dev_priv);
1065 int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out);
1066 int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
1067 int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
1068 int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
1074 extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func;
1077 * Prime - vmwgfx_prime.c
1080 extern const struct dma_buf_ops vmw_prime_dmabuf_ops;
1081 extern int vmw_prime_fd_to_handle(struct drm_device *dev,
1082 struct drm_file *file_priv,
1083 int fd, u32 *handle);
1084 extern int vmw_prime_handle_to_fd(struct drm_device *dev,
1085 struct drm_file *file_priv,
1086 uint32_t handle, uint32_t flags,
1090 * MemoryOBject management - vmwgfx_mob.c
1093 extern int vmw_mob_bind(struct vmw_private *dev_priv, struct vmw_mob *mob,
1094 const struct vmw_sg_table *vsgt,
1095 unsigned long num_data_pages, int32_t mob_id);
1096 extern void vmw_mob_unbind(struct vmw_private *dev_priv,
1097 struct vmw_mob *mob);
1098 extern void vmw_mob_destroy(struct vmw_mob *mob);
1099 extern struct vmw_mob *vmw_mob_create(unsigned long data_pages);
1100 extern int vmw_otables_setup(struct vmw_private *dev_priv);
1101 extern void vmw_otables_takedown(struct vmw_private *dev_priv);
1104 * Context management - vmwgfx_context.c
1107 extern const struct vmw_user_resource_conv *user_context_converter;
1109 extern int vmw_context_check(struct vmw_private *dev_priv,
1110 struct ttm_object_file *tfile,
1112 struct vmw_resource **p_res);
1113 extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
1114 struct drm_file *file_priv);
1115 extern int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
1116 struct drm_file *file_priv);
1117 extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
1118 struct drm_file *file_priv);
1119 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1120 extern struct vmw_cmdbuf_res_manager *
1121 vmw_context_res_man(struct vmw_resource *ctx);
1122 extern struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
1123 SVGACOTableType cotable_type);
1124 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1125 struct vmw_ctx_binding_state;
1126 extern struct vmw_ctx_binding_state *
1127 vmw_context_binding_state(struct vmw_resource *ctx);
1128 extern void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
1130 extern int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
1131 struct vmw_buffer_object *mob);
1132 extern struct vmw_buffer_object *
1133 vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res);
1137 * Surface management - vmwgfx_surface.c
1140 extern const struct vmw_user_resource_conv *user_surface_converter;
1142 extern void vmw_surface_res_free(struct vmw_resource *res);
1143 extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
1144 struct drm_file *file_priv);
1145 extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
1146 struct drm_file *file_priv);
1147 extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
1148 struct drm_file *file_priv);
1149 extern int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1150 struct drm_file *file_priv);
1151 extern int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1152 struct drm_file *file_priv);
1153 extern int vmw_surface_check(struct vmw_private *dev_priv,
1154 struct ttm_object_file *tfile,
1155 uint32_t handle, int *id);
1156 extern int vmw_surface_validate(struct vmw_private *dev_priv,
1157 struct vmw_surface *srf);
1158 int vmw_surface_gb_priv_define(struct drm_device *dev,
1159 uint32_t user_accounting_size,
1160 SVGA3dSurfaceAllFlags svga3d_flags,
1161 SVGA3dSurfaceFormat format,
1163 uint32_t num_mip_levels,
1164 uint32_t multisample_count,
1165 uint32_t array_size,
1166 struct drm_vmw_size size,
1167 SVGA3dMSPattern multisample_pattern,
1168 SVGA3dMSQualityLevel quality_level,
1169 struct vmw_surface **srf_out);
1170 extern int vmw_gb_surface_define_ext_ioctl(struct drm_device *dev,
1172 struct drm_file *file_priv);
1173 extern int vmw_gb_surface_reference_ext_ioctl(struct drm_device *dev,
1175 struct drm_file *file_priv);
1178 * Shader management - vmwgfx_shader.c
1181 extern const struct vmw_user_resource_conv *user_shader_converter;
1183 extern int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
1184 struct drm_file *file_priv);
1185 extern int vmw_shader_destroy_ioctl(struct drm_device *dev, void *data,
1186 struct drm_file *file_priv);
1187 extern int vmw_compat_shader_add(struct vmw_private *dev_priv,
1188 struct vmw_cmdbuf_res_manager *man,
1189 u32 user_key, const void *bytecode,
1190 SVGA3dShaderType shader_type,
1192 struct list_head *list);
1193 extern int vmw_shader_remove(struct vmw_cmdbuf_res_manager *man,
1194 u32 user_key, SVGA3dShaderType shader_type,
1195 struct list_head *list);
1196 extern int vmw_dx_shader_add(struct vmw_cmdbuf_res_manager *man,
1197 struct vmw_resource *ctx,
1199 SVGA3dShaderType shader_type,
1200 struct list_head *list);
1201 extern void vmw_dx_shader_cotable_list_scrub(struct vmw_private *dev_priv,
1202 struct list_head *list,
1205 extern struct vmw_resource *
1206 vmw_shader_lookup(struct vmw_cmdbuf_res_manager *man,
1207 u32 user_key, SVGA3dShaderType shader_type);
1210 * Command buffer managed resources - vmwgfx_cmdbuf_res.c
1213 extern struct vmw_cmdbuf_res_manager *
1214 vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv);
1215 extern void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man);
1216 extern size_t vmw_cmdbuf_res_man_size(void);
1217 extern struct vmw_resource *
1218 vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
1219 enum vmw_cmdbuf_res_type res_type,
1221 extern void vmw_cmdbuf_res_revert(struct list_head *list);
1222 extern void vmw_cmdbuf_res_commit(struct list_head *list);
1223 extern int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
1224 enum vmw_cmdbuf_res_type res_type,
1226 struct vmw_resource *res,
1227 struct list_head *list);
1228 extern int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
1229 enum vmw_cmdbuf_res_type res_type,
1231 struct list_head *list,
1232 struct vmw_resource **res);
1235 * COTable management - vmwgfx_cotable.c
1237 extern const SVGACOTableType vmw_cotable_scrub_order[];
1238 extern struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
1239 struct vmw_resource *ctx,
1241 extern int vmw_cotable_notify(struct vmw_resource *res, int id);
1242 extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback);
1243 extern void vmw_cotable_add_resource(struct vmw_resource *ctx,
1244 struct list_head *head);
1247 * Command buffer managerment vmwgfx_cmdbuf.c
1249 struct vmw_cmdbuf_man;
1250 struct vmw_cmdbuf_header;
1252 extern struct vmw_cmdbuf_man *
1253 vmw_cmdbuf_man_create(struct vmw_private *dev_priv);
1254 extern int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
1255 size_t size, size_t default_size);
1256 extern void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man);
1257 extern void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man);
1258 extern int vmw_cmdbuf_idle(struct vmw_cmdbuf_man *man, bool interruptible,
1259 unsigned long timeout);
1260 extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size,
1261 int ctx_id, bool interruptible,
1262 struct vmw_cmdbuf_header *header);
1263 extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size,
1264 struct vmw_cmdbuf_header *header,
1266 extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man,
1267 size_t size, bool interruptible,
1268 struct vmw_cmdbuf_header **p_header);
1269 extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header);
1270 extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man,
1271 bool interruptible);
1272 extern void vmw_cmdbuf_irqthread(struct vmw_cmdbuf_man *man);
1274 /* CPU blit utilities - vmwgfx_blit.c */
1277 * struct vmw_diff_cpy - CPU blit information structure
1279 * @rect: The output bounding box rectangle.
1280 * @line: The current line of the blit.
1281 * @line_offset: Offset of the current line segment.
1282 * @cpp: Bytes per pixel (granularity information).
1283 * @memcpy: Which memcpy function to use.
1285 struct vmw_diff_cpy {
1286 struct drm_rect rect;
1290 void (*do_cpy)(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src,
1294 #define VMW_CPU_BLIT_INITIALIZER { \
1295 .do_cpy = vmw_memcpy, \
1298 #define VMW_CPU_BLIT_DIFF_INITIALIZER(_cpp) { \
1301 .rect = { .x1 = INT_MAX/2, \
1307 .do_cpy = vmw_diff_memcpy, \
1310 void vmw_diff_memcpy(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src,
1313 void vmw_memcpy(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src, size_t n);
1315 int vmw_bo_cpu_blit(struct ttm_buffer_object *dst,
1316 u32 dst_offset, u32 dst_stride,
1317 struct ttm_buffer_object *src,
1318 u32 src_offset, u32 src_stride,
1320 struct vmw_diff_cpy *diff);
1322 /* Host messaging -vmwgfx_msg.c: */
1323 int vmw_host_get_guestinfo(const char *guest_info_param,
1324 char *buffer, size_t *length);
1325 int vmw_host_log(const char *log);
1330 * VMW_DEBUG_USER - Debug output for user-space debugging.
1332 * @fmt: printf() like format string.
1334 * This macro is for logging user-space error and debugging messages for e.g.
1335 * command buffer execution errors due to malformed commands, invalid context,
1338 #define VMW_DEBUG_USER(fmt, ...) \
1339 DRM_DEBUG_DRIVER(fmt, ##__VA_ARGS__)
1342 * Inline helper functions
1345 static inline void vmw_surface_unreference(struct vmw_surface **srf)
1347 struct vmw_surface *tmp_srf = *srf;
1348 struct vmw_resource *res = &tmp_srf->res;
1351 vmw_resource_unreference(&res);
1354 static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf)
1356 (void) vmw_resource_reference(&srf->res);
1360 static inline void vmw_bo_unreference(struct vmw_buffer_object **buf)
1362 struct vmw_buffer_object *tmp_buf = *buf;
1365 if (tmp_buf != NULL) {
1366 ttm_bo_put(&tmp_buf->base);
1370 static inline struct vmw_buffer_object *
1371 vmw_bo_reference(struct vmw_buffer_object *buf)
1373 ttm_bo_get(&buf->base);
1377 static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
1379 return &ttm_mem_glob;
1382 static inline void vmw_fifo_resource_inc(struct vmw_private *dev_priv)
1384 atomic_inc(&dev_priv->num_fifo_resources);
1387 static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv)
1389 atomic_dec(&dev_priv->num_fifo_resources);
1393 * vmw_mmio_read - Perform a MMIO read from volatile memory
1395 * @addr: The address to read from
1397 * This function is intended to be equivalent to ioread32() on
1398 * memremap'd memory, but without byteswapping.
1400 static inline u32 vmw_mmio_read(u32 *addr)
1402 return READ_ONCE(*addr);
1406 * vmw_mmio_write - Perform a MMIO write to volatile memory
1408 * @addr: The address to write to
1410 * This function is intended to be equivalent to iowrite32 on
1411 * memremap'd memory, but without byteswapping.
1413 static inline void vmw_mmio_write(u32 value, u32 *addr)
1415 WRITE_ONCE(*addr, value);