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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
[deliverable/linux.git] / drivers / gpu / drm / vmwgfx / vmwgfx_drv.h
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1/**************************************************************************
2 *
3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 **************************************************************************/
27
28#ifndef _VMWGFX_DRV_H_
29#define _VMWGFX_DRV_H_
30
31#include "vmwgfx_reg.h"
32#include <drm/drmP.h>
33#include <drm/vmwgfx_drm.h>
34#include <drm/drm_hashtab.h>
35#include <drm/drm_auth.h>
36#include <linux/suspend.h>
37#include <drm/ttm/ttm_bo_driver.h>
38#include <drm/ttm/ttm_object.h>
39#include <drm/ttm/ttm_lock.h>
40#include <drm/ttm/ttm_execbuf_util.h>
41#include <drm/ttm/ttm_module.h>
42#include "vmwgfx_fence.h"
43
44#define VMWGFX_DRIVER_DATE "20160210"
45#define VMWGFX_DRIVER_MAJOR 2
46#define VMWGFX_DRIVER_MINOR 10
47#define VMWGFX_DRIVER_PATCHLEVEL 0
48#define VMWGFX_FILE_PAGE_OFFSET 0x00100000
49#define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
50#define VMWGFX_MAX_RELOCATIONS 2048
51#define VMWGFX_MAX_VALIDATIONS 2048
52#define VMWGFX_MAX_DISPLAYS 16
53#define VMWGFX_CMD_BOUNCE_INIT_SIZE 32768
54#define VMWGFX_ENABLE_SCREEN_TARGET_OTABLE 1
55
56/*
57 * Perhaps we should have sysfs entries for these.
58 */
59#define VMWGFX_NUM_GB_CONTEXT 256
60#define VMWGFX_NUM_GB_SHADER 20000
61#define VMWGFX_NUM_GB_SURFACE 32768
62#define VMWGFX_NUM_GB_SCREEN_TARGET VMWGFX_MAX_DISPLAYS
63#define VMWGFX_NUM_DXCONTEXT 256
64#define VMWGFX_NUM_DXQUERY 512
65#define VMWGFX_NUM_MOB (VMWGFX_NUM_GB_CONTEXT +\
66 VMWGFX_NUM_GB_SHADER +\
67 VMWGFX_NUM_GB_SURFACE +\
68 VMWGFX_NUM_GB_SCREEN_TARGET)
69
70#define VMW_PL_GMR TTM_PL_PRIV0
71#define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0
72#define VMW_PL_MOB TTM_PL_PRIV1
73#define VMW_PL_FLAG_MOB TTM_PL_FLAG_PRIV1
74
75#define VMW_RES_CONTEXT ttm_driver_type0
76#define VMW_RES_SURFACE ttm_driver_type1
77#define VMW_RES_STREAM ttm_driver_type2
78#define VMW_RES_FENCE ttm_driver_type3
79#define VMW_RES_SHADER ttm_driver_type4
80
81struct vmw_fpriv {
82 struct drm_master *locked_master;
83 struct ttm_object_file *tfile;
84 bool gb_aware;
85};
86
87struct vmw_dma_buffer {
88 struct ttm_buffer_object base;
89 struct list_head res_list;
90 s32 pin_count;
91 /* Not ref-counted. Protected by binding_mutex */
92 struct vmw_resource *dx_query_ctx;
93};
94
95/**
96 * struct vmw_validate_buffer - Carries validation info about buffers.
97 *
98 * @base: Validation info for TTM.
99 * @hash: Hash entry for quick lookup of the TTM buffer object.
100 *
101 * This structure contains also driver private validation info
102 * on top of the info needed by TTM.
103 */
104struct vmw_validate_buffer {
105 struct ttm_validate_buffer base;
106 struct drm_hash_item hash;
107 bool validate_as_mob;
108};
109
110struct vmw_res_func;
111struct vmw_resource {
112 struct kref kref;
113 struct vmw_private *dev_priv;
114 int id;
115 bool avail;
116 unsigned long backup_size;
117 bool res_dirty; /* Protected by backup buffer reserved */
118 bool backup_dirty; /* Protected by backup buffer reserved */
119 struct vmw_dma_buffer *backup;
120 unsigned long backup_offset;
121 unsigned long pin_count; /* Protected by resource reserved */
122 const struct vmw_res_func *func;
123 struct list_head lru_head; /* Protected by the resource lock */
124 struct list_head mob_head; /* Protected by @backup reserved */
125 struct list_head binding_head; /* Protected by binding_mutex */
126 void (*res_free) (struct vmw_resource *res);
127 void (*hw_destroy) (struct vmw_resource *res);
128};
129
130
131/*
132 * Resources that are managed using ioctls.
133 */
134enum vmw_res_type {
135 vmw_res_context,
136 vmw_res_surface,
137 vmw_res_stream,
138 vmw_res_shader,
139 vmw_res_dx_context,
140 vmw_res_cotable,
141 vmw_res_view,
142 vmw_res_max
143};
144
145/*
146 * Resources that are managed using command streams.
147 */
148enum vmw_cmdbuf_res_type {
149 vmw_cmdbuf_res_shader,
150 vmw_cmdbuf_res_view
151};
152
153struct vmw_cmdbuf_res_manager;
154
155struct vmw_cursor_snooper {
156 struct drm_crtc *crtc;
157 size_t age;
158 uint32_t *image;
159};
160
161struct vmw_framebuffer;
162struct vmw_surface_offset;
163
164struct vmw_surface {
165 struct vmw_resource res;
166 uint32_t flags;
167 uint32_t format;
168 uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
169 struct drm_vmw_size base_size;
170 struct drm_vmw_size *sizes;
171 uint32_t num_sizes;
172 bool scanout;
173 uint32_t array_size;
174 /* TODO so far just a extra pointer */
175 struct vmw_cursor_snooper snooper;
176 struct vmw_surface_offset *offsets;
177 SVGA3dTextureFilter autogen_filter;
178 uint32_t multisample_count;
179 struct list_head view_list;
180};
181
182struct vmw_marker_queue {
183 struct list_head head;
184 u64 lag;
185 u64 lag_time;
186 spinlock_t lock;
187};
188
189struct vmw_fifo_state {
190 unsigned long reserved_size;
191 u32 *dynamic_buffer;
192 u32 *static_buffer;
193 unsigned long static_buffer_size;
194 bool using_bounce_buffer;
195 uint32_t capabilities;
196 struct mutex fifo_mutex;
197 struct rw_semaphore rwsem;
198 struct vmw_marker_queue marker_queue;
199 bool dx;
200};
201
202struct vmw_relocation {
203 SVGAMobId *mob_loc;
204 SVGAGuestPtr *location;
205 uint32_t index;
206};
207
208/**
209 * struct vmw_res_cache_entry - resource information cache entry
210 *
211 * @valid: Whether the entry is valid, which also implies that the execbuf
212 * code holds a reference to the resource, and it's placed on the
213 * validation list.
214 * @handle: User-space handle of a resource.
215 * @res: Non-ref-counted pointer to the resource.
216 *
217 * Used to avoid frequent repeated user-space handle lookups of the
218 * same resource.
219 */
220struct vmw_res_cache_entry {
221 bool valid;
222 uint32_t handle;
223 struct vmw_resource *res;
224 struct vmw_resource_val_node *node;
225};
226
227/**
228 * enum vmw_dma_map_mode - indicate how to perform TTM page dma mappings.
229 */
230enum vmw_dma_map_mode {
231 vmw_dma_phys, /* Use physical page addresses */
232 vmw_dma_alloc_coherent, /* Use TTM coherent pages */
233 vmw_dma_map_populate, /* Unmap from DMA just after unpopulate */
234 vmw_dma_map_bind, /* Unmap from DMA just before unbind */
235 vmw_dma_map_max
236};
237
238/**
239 * struct vmw_sg_table - Scatter/gather table for binding, with additional
240 * device-specific information.
241 *
242 * @sgt: Pointer to a struct sg_table with binding information
243 * @num_regions: Number of regions with device-address contiguous pages
244 */
245struct vmw_sg_table {
246 enum vmw_dma_map_mode mode;
247 struct page **pages;
248 const dma_addr_t *addrs;
249 struct sg_table *sgt;
250 unsigned long num_regions;
251 unsigned long num_pages;
252};
253
254/**
255 * struct vmw_piter - Page iterator that iterates over a list of pages
256 * and DMA addresses that could be either a scatter-gather list or
257 * arrays
258 *
259 * @pages: Array of page pointers to the pages.
260 * @addrs: DMA addresses to the pages if coherent pages are used.
261 * @iter: Scatter-gather page iterator. Current position in SG list.
262 * @i: Current position in arrays.
263 * @num_pages: Number of pages total.
264 * @next: Function to advance the iterator. Returns false if past the list
265 * of pages, true otherwise.
266 * @dma_address: Function to return the DMA address of the current page.
267 */
268struct vmw_piter {
269 struct page **pages;
270 const dma_addr_t *addrs;
271 struct sg_page_iter iter;
272 unsigned long i;
273 unsigned long num_pages;
274 bool (*next)(struct vmw_piter *);
275 dma_addr_t (*dma_address)(struct vmw_piter *);
276 struct page *(*page)(struct vmw_piter *);
277};
278
279/*
280 * enum vmw_display_unit_type - Describes the display unit
281 */
282enum vmw_display_unit_type {
283 vmw_du_invalid = 0,
284 vmw_du_legacy,
285 vmw_du_screen_object,
286 vmw_du_screen_target
287};
288
289
290struct vmw_sw_context{
291 struct drm_open_hash res_ht;
292 bool res_ht_initialized;
293 bool kernel; /**< is the called made from the kernel */
294 struct vmw_fpriv *fp;
295 struct list_head validate_nodes;
296 struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
297 uint32_t cur_reloc;
298 struct vmw_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
299 uint32_t cur_val_buf;
300 uint32_t *cmd_bounce;
301 uint32_t cmd_bounce_size;
302 struct list_head resource_list;
303 struct list_head ctx_resource_list; /* For contexts and cotables */
304 struct vmw_dma_buffer *cur_query_bo;
305 struct list_head res_relocations;
306 uint32_t *buf_start;
307 struct vmw_res_cache_entry res_cache[vmw_res_max];
308 struct vmw_resource *last_query_ctx;
309 bool needs_post_query_barrier;
310 struct vmw_resource *error_resource;
311 struct vmw_ctx_binding_state *staged_bindings;
312 bool staged_bindings_inuse;
313 struct list_head staged_cmd_res;
314 struct vmw_resource_val_node *dx_ctx_node;
315 struct vmw_dma_buffer *dx_query_mob;
316 struct vmw_resource *dx_query_ctx;
317 struct vmw_cmdbuf_res_manager *man;
318};
319
320struct vmw_legacy_display;
321struct vmw_overlay;
322
323struct vmw_master {
324 struct ttm_lock lock;
325};
326
327struct vmw_vga_topology_state {
328 uint32_t width;
329 uint32_t height;
330 uint32_t primary;
331 uint32_t pos_x;
332 uint32_t pos_y;
333};
334
335
336/*
337 * struct vmw_otable - Guest Memory OBject table metadata
338 *
339 * @size: Size of the table (page-aligned).
340 * @page_table: Pointer to a struct vmw_mob holding the page table.
341 */
342struct vmw_otable {
343 unsigned long size;
344 struct vmw_mob *page_table;
345 bool enabled;
346};
347
348struct vmw_otable_batch {
349 unsigned num_otables;
350 struct vmw_otable *otables;
351 struct vmw_resource *context;
352 struct ttm_buffer_object *otable_bo;
353};
354
355struct vmw_private {
356 struct ttm_bo_device bdev;
357 struct ttm_bo_global_ref bo_global_ref;
358 struct drm_global_reference mem_global_ref;
359
360 struct vmw_fifo_state fifo;
361
362 struct drm_device *dev;
363 unsigned long vmw_chipset;
364 unsigned int io_start;
365 uint32_t vram_start;
366 uint32_t vram_size;
367 uint32_t prim_bb_mem;
368 uint32_t mmio_start;
369 uint32_t mmio_size;
370 uint32_t fb_max_width;
371 uint32_t fb_max_height;
372 uint32_t texture_max_width;
373 uint32_t texture_max_height;
374 uint32_t stdu_max_width;
375 uint32_t stdu_max_height;
376 uint32_t initial_width;
377 uint32_t initial_height;
378 u32 *mmio_virt;
379 uint32_t capabilities;
380 uint32_t max_gmr_ids;
381 uint32_t max_gmr_pages;
382 uint32_t max_mob_pages;
383 uint32_t max_mob_size;
384 uint32_t memory_size;
385 bool has_gmr;
386 bool has_mob;
387 spinlock_t hw_lock;
388 spinlock_t cap_lock;
389 bool has_dx;
390 bool assume_16bpp;
391
392 /*
393 * VGA registers.
394 */
395
396 struct vmw_vga_topology_state vga_save[VMWGFX_MAX_DISPLAYS];
397 uint32_t vga_width;
398 uint32_t vga_height;
399 uint32_t vga_bpp;
400 uint32_t vga_bpl;
401 uint32_t vga_pitchlock;
402
403 uint32_t num_displays;
404
405 /*
406 * Framebuffer info.
407 */
408
409 void *fb_info;
410 enum vmw_display_unit_type active_display_unit;
411 struct vmw_legacy_display *ldu_priv;
412 struct vmw_overlay *overlay_priv;
413 struct drm_property *hotplug_mode_update_property;
414 struct drm_property *implicit_placement_property;
415 unsigned num_implicit;
416 struct vmw_framebuffer *implicit_fb;
417 struct mutex global_kms_state_mutex;
418
419 /*
420 * Context and surface management.
421 */
422
423 rwlock_t resource_lock;
424 struct idr res_idr[vmw_res_max];
425 /*
426 * Block lastclose from racing with firstopen.
427 */
428
429 struct mutex init_mutex;
430
431 /*
432 * A resource manager for kernel-only surfaces and
433 * contexts.
434 */
435
436 struct ttm_object_device *tdev;
437
438 /*
439 * Fencing and IRQs.
440 */
441
442 atomic_t marker_seq;
443 wait_queue_head_t fence_queue;
444 wait_queue_head_t fifo_queue;
445 spinlock_t waiter_lock;
446 int fence_queue_waiters; /* Protected by waiter_lock */
447 int goal_queue_waiters; /* Protected by waiter_lock */
448 int cmdbuf_waiters; /* Protected by waiter_lock */
449 int error_waiters; /* Protected by waiter_lock */
450 int fifo_queue_waiters; /* Protected by waiter_lock */
451 uint32_t last_read_seqno;
452 struct vmw_fence_manager *fman;
453 uint32_t irq_mask; /* Updates protected by waiter_lock */
454
455 /*
456 * Device state
457 */
458
459 uint32_t traces_state;
460 uint32_t enable_state;
461 uint32_t config_done_state;
462
463 /**
464 * Execbuf
465 */
466 /**
467 * Protected by the cmdbuf mutex.
468 */
469
470 struct vmw_sw_context ctx;
471 struct mutex cmdbuf_mutex;
472 struct mutex binding_mutex;
473
474 /**
475 * Operating mode.
476 */
477
478 bool stealth;
479 bool enable_fb;
480 spinlock_t svga_lock;
481
482 /**
483 * Master management.
484 */
485
486 struct vmw_master *active_master;
487 struct vmw_master fbdev_master;
488 struct notifier_block pm_nb;
489 bool suspended;
490 bool refuse_hibernation;
491
492 struct mutex release_mutex;
493 atomic_t num_fifo_resources;
494
495 /*
496 * Replace this with an rwsem as soon as we have down_xx_interruptible()
497 */
498 struct ttm_lock reservation_sem;
499
500 /*
501 * Query processing. These members
502 * are protected by the cmdbuf mutex.
503 */
504
505 struct vmw_dma_buffer *dummy_query_bo;
506 struct vmw_dma_buffer *pinned_bo;
507 uint32_t query_cid;
508 uint32_t query_cid_valid;
509 bool dummy_query_bo_pinned;
510
511 /*
512 * Surface swapping. The "surface_lru" list is protected by the
513 * resource lock in order to be able to destroy a surface and take
514 * it off the lru atomically. "used_memory_size" is currently
515 * protected by the cmdbuf mutex for simplicity.
516 */
517
518 struct list_head res_lru[vmw_res_max];
519 uint32_t used_memory_size;
520
521 /*
522 * DMA mapping stuff.
523 */
524 enum vmw_dma_map_mode map_mode;
525
526 /*
527 * Guest Backed stuff
528 */
529 struct vmw_otable_batch otable_batch;
530
531 struct vmw_cmdbuf_man *cman;
532};
533
534static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res)
535{
536 return container_of(res, struct vmw_surface, res);
537}
538
539static inline struct vmw_private *vmw_priv(struct drm_device *dev)
540{
541 return (struct vmw_private *)dev->dev_private;
542}
543
544static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv)
545{
546 return (struct vmw_fpriv *)file_priv->driver_priv;
547}
548
549static inline struct vmw_master *vmw_master(struct drm_master *master)
550{
551 return (struct vmw_master *) master->driver_priv;
552}
553
554/*
555 * The locking here is fine-grained, so that it is performed once
556 * for every read- and write operation. This is of course costly, but we
557 * don't perform much register access in the timing critical paths anyway.
558 * Instead we have the extra benefit of being sure that we don't forget
559 * the hw lock around register accesses.
560 */
561static inline void vmw_write(struct vmw_private *dev_priv,
562 unsigned int offset, uint32_t value)
563{
564 unsigned long irq_flags;
565
566 spin_lock_irqsave(&dev_priv->hw_lock, irq_flags);
567 outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
568 outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
569 spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags);
570}
571
572static inline uint32_t vmw_read(struct vmw_private *dev_priv,
573 unsigned int offset)
574{
575 unsigned long irq_flags;
576 u32 val;
577
578 spin_lock_irqsave(&dev_priv->hw_lock, irq_flags);
579 outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
580 val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
581 spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags);
582
583 return val;
584}
585
586extern void vmw_svga_enable(struct vmw_private *dev_priv);
587extern void vmw_svga_disable(struct vmw_private *dev_priv);
588
589
590/**
591 * GMR utilities - vmwgfx_gmr.c
592 */
593
594extern int vmw_gmr_bind(struct vmw_private *dev_priv,
595 const struct vmw_sg_table *vsgt,
596 unsigned long num_pages,
597 int gmr_id);
598extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id);
599
600/**
601 * Resource utilities - vmwgfx_resource.c
602 */
603struct vmw_user_resource_conv;
604
605extern void vmw_resource_unreference(struct vmw_resource **p_res);
606extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
607extern struct vmw_resource *
608vmw_resource_reference_unless_doomed(struct vmw_resource *res);
609extern int vmw_resource_validate(struct vmw_resource *res);
610extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
611 bool no_backup);
612extern bool vmw_resource_needs_backup(const struct vmw_resource *res);
613extern int vmw_user_lookup_handle(struct vmw_private *dev_priv,
614 struct ttm_object_file *tfile,
615 uint32_t handle,
616 struct vmw_surface **out_surf,
617 struct vmw_dma_buffer **out_buf);
618extern int vmw_user_resource_lookup_handle(
619 struct vmw_private *dev_priv,
620 struct ttm_object_file *tfile,
621 uint32_t handle,
622 const struct vmw_user_resource_conv *converter,
623 struct vmw_resource **p_res);
624extern void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo);
625extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
626 struct vmw_dma_buffer *vmw_bo,
627 size_t size, struct ttm_placement *placement,
628 bool interuptable,
629 void (*bo_free) (struct ttm_buffer_object *bo));
630extern int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
631 struct ttm_object_file *tfile);
632extern int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
633 struct ttm_object_file *tfile,
634 uint32_t size,
635 bool shareable,
636 uint32_t *handle,
637 struct vmw_dma_buffer **p_dma_buf,
638 struct ttm_base_object **p_base);
639extern int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
640 struct vmw_dma_buffer *dma_buf,
641 uint32_t *handle);
642extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
643 struct drm_file *file_priv);
644extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
645 struct drm_file *file_priv);
646extern int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
647 struct drm_file *file_priv);
648extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
649 uint32_t cur_validate_node);
650extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
651extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
652 uint32_t id, struct vmw_dma_buffer **out,
653 struct ttm_base_object **base);
654extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
655 struct drm_file *file_priv);
656extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
657 struct drm_file *file_priv);
658extern int vmw_user_stream_lookup(struct vmw_private *dev_priv,
659 struct ttm_object_file *tfile,
660 uint32_t *inout_id,
661 struct vmw_resource **out);
662extern void vmw_resource_unreserve(struct vmw_resource *res,
663 bool switch_backup,
664 struct vmw_dma_buffer *new_backup,
665 unsigned long new_backup_offset);
666extern void vmw_resource_move_notify(struct ttm_buffer_object *bo,
667 struct ttm_mem_reg *mem);
668extern void vmw_query_move_notify(struct ttm_buffer_object *bo,
669 struct ttm_mem_reg *mem);
670extern int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob);
671extern void vmw_fence_single_bo(struct ttm_buffer_object *bo,
672 struct vmw_fence_obj *fence);
673extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
674
675/**
676 * DMA buffer helper routines - vmwgfx_dmabuf.c
677 */
678extern int vmw_dmabuf_pin_in_placement(struct vmw_private *vmw_priv,
679 struct vmw_dma_buffer *bo,
680 struct ttm_placement *placement,
681 bool interruptible);
682extern int vmw_dmabuf_pin_in_vram(struct vmw_private *dev_priv,
683 struct vmw_dma_buffer *buf,
684 bool interruptible);
685extern int vmw_dmabuf_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
686 struct vmw_dma_buffer *buf,
687 bool interruptible);
688extern int vmw_dmabuf_pin_in_start_of_vram(struct vmw_private *vmw_priv,
689 struct vmw_dma_buffer *bo,
690 bool interruptible);
691extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv,
692 struct vmw_dma_buffer *bo,
693 bool interruptible);
694extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
695 SVGAGuestPtr *ptr);
696extern void vmw_bo_pin_reserved(struct vmw_dma_buffer *bo, bool pin);
697
698/**
699 * Misc Ioctl functionality - vmwgfx_ioctl.c
700 */
701
702extern int vmw_getparam_ioctl(struct drm_device *dev, void *data,
703 struct drm_file *file_priv);
704extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
705 struct drm_file *file_priv);
706extern int vmw_present_ioctl(struct drm_device *dev, void *data,
707 struct drm_file *file_priv);
708extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
709 struct drm_file *file_priv);
710extern unsigned int vmw_fops_poll(struct file *filp,
711 struct poll_table_struct *wait);
712extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
713 size_t count, loff_t *offset);
714
715/**
716 * Fifo utilities - vmwgfx_fifo.c
717 */
718
719extern int vmw_fifo_init(struct vmw_private *dev_priv,
720 struct vmw_fifo_state *fifo);
721extern void vmw_fifo_release(struct vmw_private *dev_priv,
722 struct vmw_fifo_state *fifo);
723extern void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes);
724extern void *
725vmw_fifo_reserve_dx(struct vmw_private *dev_priv, uint32_t bytes, int ctx_id);
726extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
727extern void vmw_fifo_commit_flush(struct vmw_private *dev_priv, uint32_t bytes);
728extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
729 uint32_t *seqno);
730extern void vmw_fifo_ping_host_locked(struct vmw_private *, uint32_t reason);
731extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
732extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
733extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
734extern int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
735 uint32_t cid);
736extern int vmw_fifo_flush(struct vmw_private *dev_priv,
737 bool interruptible);
738
739/**
740 * TTM glue - vmwgfx_ttm_glue.c
741 */
742
743extern int vmw_ttm_global_init(struct vmw_private *dev_priv);
744extern void vmw_ttm_global_release(struct vmw_private *dev_priv);
745extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
746
747/**
748 * TTM buffer object driver - vmwgfx_buffer.c
749 */
750
751extern const size_t vmw_tt_size;
752extern struct ttm_placement vmw_vram_placement;
753extern struct ttm_placement vmw_vram_ne_placement;
754extern struct ttm_placement vmw_vram_sys_placement;
755extern struct ttm_placement vmw_vram_gmr_placement;
756extern struct ttm_placement vmw_vram_gmr_ne_placement;
757extern struct ttm_placement vmw_sys_placement;
758extern struct ttm_placement vmw_sys_ne_placement;
759extern struct ttm_placement vmw_evictable_placement;
760extern struct ttm_placement vmw_srf_placement;
761extern struct ttm_placement vmw_mob_placement;
762extern struct ttm_placement vmw_mob_ne_placement;
763extern struct ttm_bo_driver vmw_bo_driver;
764extern int vmw_dma_quiescent(struct drm_device *dev);
765extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
766extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
767extern const struct vmw_sg_table *
768vmw_bo_sg_table(struct ttm_buffer_object *bo);
769extern void vmw_piter_start(struct vmw_piter *viter,
770 const struct vmw_sg_table *vsgt,
771 unsigned long p_offs);
772
773/**
774 * vmw_piter_next - Advance the iterator one page.
775 *
776 * @viter: Pointer to the iterator to advance.
777 *
778 * Returns false if past the list of pages, true otherwise.
779 */
780static inline bool vmw_piter_next(struct vmw_piter *viter)
781{
782 return viter->next(viter);
783}
784
785/**
786 * vmw_piter_dma_addr - Return the DMA address of the current page.
787 *
788 * @viter: Pointer to the iterator
789 *
790 * Returns the DMA address of the page pointed to by @viter.
791 */
792static inline dma_addr_t vmw_piter_dma_addr(struct vmw_piter *viter)
793{
794 return viter->dma_address(viter);
795}
796
797/**
798 * vmw_piter_page - Return a pointer to the current page.
799 *
800 * @viter: Pointer to the iterator
801 *
802 * Returns the DMA address of the page pointed to by @viter.
803 */
804static inline struct page *vmw_piter_page(struct vmw_piter *viter)
805{
806 return viter->page(viter);
807}
808
809/**
810 * Command submission - vmwgfx_execbuf.c
811 */
812
813extern int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
814 struct drm_file *file_priv, size_t size);
815extern int vmw_execbuf_process(struct drm_file *file_priv,
816 struct vmw_private *dev_priv,
817 void __user *user_commands,
818 void *kernel_commands,
819 uint32_t command_size,
820 uint64_t throttle_us,
821 uint32_t dx_context_handle,
822 struct drm_vmw_fence_rep __user
823 *user_fence_rep,
824 struct vmw_fence_obj **out_fence);
825extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
826 struct vmw_fence_obj *fence);
827extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv);
828
829extern int vmw_execbuf_fence_commands(struct drm_file *file_priv,
830 struct vmw_private *dev_priv,
831 struct vmw_fence_obj **p_fence,
832 uint32_t *p_handle);
833extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
834 struct vmw_fpriv *vmw_fp,
835 int ret,
836 struct drm_vmw_fence_rep __user
837 *user_fence_rep,
838 struct vmw_fence_obj *fence,
839 uint32_t fence_handle);
840extern int vmw_validate_single_buffer(struct vmw_private *dev_priv,
841 struct ttm_buffer_object *bo,
842 bool interruptible,
843 bool validate_as_mob);
844
845
846/**
847 * IRQs and wating - vmwgfx_irq.c
848 */
849
850extern irqreturn_t vmw_irq_handler(int irq, void *arg);
851extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
852 uint32_t seqno, bool interruptible,
853 unsigned long timeout);
854extern void vmw_irq_preinstall(struct drm_device *dev);
855extern int vmw_irq_postinstall(struct drm_device *dev);
856extern void vmw_irq_uninstall(struct drm_device *dev);
857extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
858 uint32_t seqno);
859extern int vmw_fallback_wait(struct vmw_private *dev_priv,
860 bool lazy,
861 bool fifo_idle,
862 uint32_t seqno,
863 bool interruptible,
864 unsigned long timeout);
865extern void vmw_update_seqno(struct vmw_private *dev_priv,
866 struct vmw_fifo_state *fifo_state);
867extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
868extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
869extern void vmw_goal_waiter_add(struct vmw_private *dev_priv);
870extern void vmw_goal_waiter_remove(struct vmw_private *dev_priv);
871extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag,
872 int *waiter_count);
873extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
874 u32 flag, int *waiter_count);
875
876/**
877 * Rudimentary fence-like objects currently used only for throttling -
878 * vmwgfx_marker.c
879 */
880
881extern void vmw_marker_queue_init(struct vmw_marker_queue *queue);
882extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue);
883extern int vmw_marker_push(struct vmw_marker_queue *queue,
884 uint32_t seqno);
885extern int vmw_marker_pull(struct vmw_marker_queue *queue,
886 uint32_t signaled_seqno);
887extern int vmw_wait_lag(struct vmw_private *dev_priv,
888 struct vmw_marker_queue *queue, uint32_t us);
889
890/**
891 * Kernel framebuffer - vmwgfx_fb.c
892 */
893
894int vmw_fb_init(struct vmw_private *vmw_priv);
895int vmw_fb_close(struct vmw_private *dev_priv);
896int vmw_fb_off(struct vmw_private *vmw_priv);
897int vmw_fb_on(struct vmw_private *vmw_priv);
898
899/**
900 * Kernel modesetting - vmwgfx_kms.c
901 */
902
903int vmw_kms_init(struct vmw_private *dev_priv);
904int vmw_kms_close(struct vmw_private *dev_priv);
905int vmw_kms_save_vga(struct vmw_private *vmw_priv);
906int vmw_kms_restore_vga(struct vmw_private *vmw_priv);
907int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
908 struct drm_file *file_priv);
909void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv);
910void vmw_kms_cursor_snoop(struct vmw_surface *srf,
911 struct ttm_object_file *tfile,
912 struct ttm_buffer_object *bo,
913 SVGA3dCmdHeader *header);
914int vmw_kms_write_svga(struct vmw_private *vmw_priv,
915 unsigned width, unsigned height, unsigned pitch,
916 unsigned bpp, unsigned depth);
917void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
918bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
919 uint32_t pitch,
920 uint32_t height);
921u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
922int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe);
923void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe);
924int vmw_kms_present(struct vmw_private *dev_priv,
925 struct drm_file *file_priv,
926 struct vmw_framebuffer *vfb,
927 struct vmw_surface *surface,
928 uint32_t sid, int32_t destX, int32_t destY,
929 struct drm_vmw_rect *clips,
930 uint32_t num_clips);
931int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
932 struct drm_file *file_priv);
933void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv);
934
935int vmw_dumb_create(struct drm_file *file_priv,
936 struct drm_device *dev,
937 struct drm_mode_create_dumb *args);
938
939int vmw_dumb_map_offset(struct drm_file *file_priv,
940 struct drm_device *dev, uint32_t handle,
941 uint64_t *offset);
942int vmw_dumb_destroy(struct drm_file *file_priv,
943 struct drm_device *dev,
944 uint32_t handle);
945extern int vmw_resource_pin(struct vmw_resource *res, bool interruptible);
946extern void vmw_resource_unpin(struct vmw_resource *res);
947extern enum vmw_res_type vmw_res_type(const struct vmw_resource *res);
948
949/**
950 * Overlay control - vmwgfx_overlay.c
951 */
952
953int vmw_overlay_init(struct vmw_private *dev_priv);
954int vmw_overlay_close(struct vmw_private *dev_priv);
955int vmw_overlay_ioctl(struct drm_device *dev, void *data,
956 struct drm_file *file_priv);
957int vmw_overlay_stop_all(struct vmw_private *dev_priv);
958int vmw_overlay_resume_all(struct vmw_private *dev_priv);
959int vmw_overlay_pause_all(struct vmw_private *dev_priv);
960int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out);
961int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
962int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
963int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
964
965/**
966 * GMR Id manager
967 */
968
969extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func;
970
971/**
972 * Prime - vmwgfx_prime.c
973 */
974
975extern const struct dma_buf_ops vmw_prime_dmabuf_ops;
976extern int vmw_prime_fd_to_handle(struct drm_device *dev,
977 struct drm_file *file_priv,
978 int fd, u32 *handle);
979extern int vmw_prime_handle_to_fd(struct drm_device *dev,
980 struct drm_file *file_priv,
981 uint32_t handle, uint32_t flags,
982 int *prime_fd);
983
984/*
985 * MemoryOBject management - vmwgfx_mob.c
986 */
987struct vmw_mob;
988extern int vmw_mob_bind(struct vmw_private *dev_priv, struct vmw_mob *mob,
989 const struct vmw_sg_table *vsgt,
990 unsigned long num_data_pages, int32_t mob_id);
991extern void vmw_mob_unbind(struct vmw_private *dev_priv,
992 struct vmw_mob *mob);
993extern void vmw_mob_destroy(struct vmw_mob *mob);
994extern struct vmw_mob *vmw_mob_create(unsigned long data_pages);
995extern int vmw_otables_setup(struct vmw_private *dev_priv);
996extern void vmw_otables_takedown(struct vmw_private *dev_priv);
997
998/*
999 * Context management - vmwgfx_context.c
1000 */
1001
1002extern const struct vmw_user_resource_conv *user_context_converter;
1003
1004extern int vmw_context_check(struct vmw_private *dev_priv,
1005 struct ttm_object_file *tfile,
1006 int id,
1007 struct vmw_resource **p_res);
1008extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
1009 struct drm_file *file_priv);
1010extern int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
1011 struct drm_file *file_priv);
1012extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
1013 struct drm_file *file_priv);
1014extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1015extern struct vmw_cmdbuf_res_manager *
1016vmw_context_res_man(struct vmw_resource *ctx);
1017extern struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
1018 SVGACOTableType cotable_type);
1019extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1020struct vmw_ctx_binding_state;
1021extern struct vmw_ctx_binding_state *
1022vmw_context_binding_state(struct vmw_resource *ctx);
1023extern void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
1024 bool readback);
1025extern int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
1026 struct vmw_dma_buffer *mob);
1027extern struct vmw_dma_buffer *
1028vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res);
1029
1030
1031/*
1032 * Surface management - vmwgfx_surface.c
1033 */
1034
1035extern const struct vmw_user_resource_conv *user_surface_converter;
1036
1037extern void vmw_surface_res_free(struct vmw_resource *res);
1038extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
1039 struct drm_file *file_priv);
1040extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
1041 struct drm_file *file_priv);
1042extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
1043 struct drm_file *file_priv);
1044extern int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1045 struct drm_file *file_priv);
1046extern int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1047 struct drm_file *file_priv);
1048extern int vmw_surface_check(struct vmw_private *dev_priv,
1049 struct ttm_object_file *tfile,
1050 uint32_t handle, int *id);
1051extern int vmw_surface_validate(struct vmw_private *dev_priv,
1052 struct vmw_surface *srf);
1053int vmw_surface_gb_priv_define(struct drm_device *dev,
1054 uint32_t user_accounting_size,
1055 uint32_t svga3d_flags,
1056 SVGA3dSurfaceFormat format,
1057 bool for_scanout,
1058 uint32_t num_mip_levels,
1059 uint32_t multisample_count,
1060 uint32_t array_size,
1061 struct drm_vmw_size size,
1062 struct vmw_surface **srf_out);
1063
1064/*
1065 * Shader management - vmwgfx_shader.c
1066 */
1067
1068extern const struct vmw_user_resource_conv *user_shader_converter;
1069
1070extern int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
1071 struct drm_file *file_priv);
1072extern int vmw_shader_destroy_ioctl(struct drm_device *dev, void *data,
1073 struct drm_file *file_priv);
1074extern int vmw_compat_shader_add(struct vmw_private *dev_priv,
1075 struct vmw_cmdbuf_res_manager *man,
1076 u32 user_key, const void *bytecode,
1077 SVGA3dShaderType shader_type,
1078 size_t size,
1079 struct list_head *list);
1080extern int vmw_shader_remove(struct vmw_cmdbuf_res_manager *man,
1081 u32 user_key, SVGA3dShaderType shader_type,
1082 struct list_head *list);
1083extern int vmw_dx_shader_add(struct vmw_cmdbuf_res_manager *man,
1084 struct vmw_resource *ctx,
1085 u32 user_key,
1086 SVGA3dShaderType shader_type,
1087 struct list_head *list);
1088extern void vmw_dx_shader_cotable_list_scrub(struct vmw_private *dev_priv,
1089 struct list_head *list,
1090 bool readback);
1091
1092extern struct vmw_resource *
1093vmw_shader_lookup(struct vmw_cmdbuf_res_manager *man,
1094 u32 user_key, SVGA3dShaderType shader_type);
1095
1096/*
1097 * Command buffer managed resources - vmwgfx_cmdbuf_res.c
1098 */
1099
1100extern struct vmw_cmdbuf_res_manager *
1101vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv);
1102extern void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man);
1103extern size_t vmw_cmdbuf_res_man_size(void);
1104extern struct vmw_resource *
1105vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
1106 enum vmw_cmdbuf_res_type res_type,
1107 u32 user_key);
1108extern void vmw_cmdbuf_res_revert(struct list_head *list);
1109extern void vmw_cmdbuf_res_commit(struct list_head *list);
1110extern int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
1111 enum vmw_cmdbuf_res_type res_type,
1112 u32 user_key,
1113 struct vmw_resource *res,
1114 struct list_head *list);
1115extern int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
1116 enum vmw_cmdbuf_res_type res_type,
1117 u32 user_key,
1118 struct list_head *list,
1119 struct vmw_resource **res);
1120
1121/*
1122 * COTable management - vmwgfx_cotable.c
1123 */
1124extern const SVGACOTableType vmw_cotable_scrub_order[];
1125extern struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
1126 struct vmw_resource *ctx,
1127 u32 type);
1128extern int vmw_cotable_notify(struct vmw_resource *res, int id);
1129extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback);
1130extern void vmw_cotable_add_resource(struct vmw_resource *ctx,
1131 struct list_head *head);
1132
1133/*
1134 * Command buffer managerment vmwgfx_cmdbuf.c
1135 */
1136struct vmw_cmdbuf_man;
1137struct vmw_cmdbuf_header;
1138
1139extern struct vmw_cmdbuf_man *
1140vmw_cmdbuf_man_create(struct vmw_private *dev_priv);
1141extern int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
1142 size_t size, size_t default_size);
1143extern void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man);
1144extern void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man);
1145extern int vmw_cmdbuf_idle(struct vmw_cmdbuf_man *man, bool interruptible,
1146 unsigned long timeout);
1147extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size,
1148 int ctx_id, bool interruptible,
1149 struct vmw_cmdbuf_header *header);
1150extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size,
1151 struct vmw_cmdbuf_header *header,
1152 bool flush);
1153extern void vmw_cmdbuf_tasklet_schedule(struct vmw_cmdbuf_man *man);
1154extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man,
1155 size_t size, bool interruptible,
1156 struct vmw_cmdbuf_header **p_header);
1157extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header);
1158extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man,
1159 bool interruptible);
1160
1161
1162/**
1163 * Inline helper functions
1164 */
1165
1166static inline void vmw_surface_unreference(struct vmw_surface **srf)
1167{
1168 struct vmw_surface *tmp_srf = *srf;
1169 struct vmw_resource *res = &tmp_srf->res;
1170 *srf = NULL;
1171
1172 vmw_resource_unreference(&res);
1173}
1174
1175static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf)
1176{
1177 (void) vmw_resource_reference(&srf->res);
1178 return srf;
1179}
1180
1181static inline void vmw_dmabuf_unreference(struct vmw_dma_buffer **buf)
1182{
1183 struct vmw_dma_buffer *tmp_buf = *buf;
1184
1185 *buf = NULL;
1186 if (tmp_buf != NULL) {
1187 struct ttm_buffer_object *bo = &tmp_buf->base;
1188
1189 ttm_bo_unref(&bo);
1190 }
1191}
1192
1193static inline struct vmw_dma_buffer *vmw_dmabuf_reference(struct vmw_dma_buffer *buf)
1194{
1195 if (ttm_bo_reference(&buf->base))
1196 return buf;
1197 return NULL;
1198}
1199
1200static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
1201{
1202 return (struct ttm_mem_global *) dev_priv->mem_global_ref.object;
1203}
1204
1205static inline void vmw_fifo_resource_inc(struct vmw_private *dev_priv)
1206{
1207 atomic_inc(&dev_priv->num_fifo_resources);
1208}
1209
1210static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv)
1211{
1212 atomic_dec(&dev_priv->num_fifo_resources);
1213}
1214
1215/**
1216 * vmw_mmio_read - Perform a MMIO read from volatile memory
1217 *
1218 * @addr: The address to read from
1219 *
1220 * This function is intended to be equivalent to ioread32() on
1221 * memremap'd memory, but without byteswapping.
1222 */
1223static inline u32 vmw_mmio_read(u32 *addr)
1224{
1225 return READ_ONCE(*addr);
1226}
1227
1228/**
1229 * vmw_mmio_write - Perform a MMIO write to volatile memory
1230 *
1231 * @addr: The address to write to
1232 *
1233 * This function is intended to be equivalent to iowrite32 on
1234 * memremap'd memory, but without byteswapping.
1235 */
1236static inline void vmw_mmio_write(u32 value, u32 *addr)
1237{
1238 WRITE_ONCE(*addr, value);
1239}
1240
1241/**
1242 * Add vmw_msg module function
1243 */
1244extern int vmw_host_log(const char *log);
1245
1246#endif
Linux kernel - Deliverables
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