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1// SPDX-License-Identifier: GPL-2.0 OR MIT2/**************************************************************************3 *4 * Copyright (c) 2011-2024 Broadcom. All Rights Reserved. The term5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.6 *7 * Permission is hereby granted, free of charge, to any person obtaining a8 * copy of this software and associated documentation files (the9 * "Software"), to deal in the Software without restriction, including10 * without limitation the rights to use, copy, modify, merge, publish,11 * distribute, sub license, and/or sell copies of the Software, and to12 * permit persons to whom the Software is furnished to do so, subject to13 * the following conditions:14 *15 * The above copyright notice and this permission notice (including the16 * next paragraph) shall be included in all copies or substantial portions17 * of the Software.18 *19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE25 * USE OR OTHER DEALINGS IN THE SOFTWARE.26 *27 **************************************************************************/28 29#include "vmwgfx_bo.h"30#include "vmwgfx_drv.h"31#include "vmwgfx_resource_priv.h"32 33#include <drm/ttm/ttm_placement.h>34 35static void vmw_bo_release(struct vmw_bo *vbo)36{37 struct vmw_resource *res;38 39 WARN_ON(vbo->tbo.base.funcs &&40 kref_read(&vbo->tbo.base.refcount) != 0);41 vmw_bo_unmap(vbo);42 43 xa_destroy(&vbo->detached_resources);44 WARN_ON(vbo->is_dumb && !vbo->dumb_surface);45 if (vbo->is_dumb && vbo->dumb_surface) {46 res = &vbo->dumb_surface->res;47 WARN_ON(vbo != res->guest_memory_bo);48 WARN_ON(!res->guest_memory_bo);49 if (res->guest_memory_bo) {50 /* Reserve and switch the backing mob. */51 mutex_lock(&res->dev_priv->cmdbuf_mutex);52 (void)vmw_resource_reserve(res, false, true);53 vmw_resource_mob_detach(res);54 if (res->coherent)55 vmw_bo_dirty_release(res->guest_memory_bo);56 res->guest_memory_bo = NULL;57 res->guest_memory_offset = 0;58 vmw_resource_unreserve(res, false, false, false, NULL,59 0);60 mutex_unlock(&res->dev_priv->cmdbuf_mutex);61 }62 vmw_surface_unreference(&vbo->dumb_surface);63 }64 drm_gem_object_release(&vbo->tbo.base);65}66 67/**68 * vmw_bo_free - vmw_bo destructor69 *70 * @bo: Pointer to the embedded struct ttm_buffer_object71 */72static void vmw_bo_free(struct ttm_buffer_object *bo)73{74 struct vmw_bo *vbo = to_vmw_bo(&bo->base);75 76 WARN_ON(vbo->dirty);77 WARN_ON(!RB_EMPTY_ROOT(&vbo->res_tree));78 vmw_bo_release(vbo);79 kfree(vbo);80}81 82/**83 * vmw_bo_pin_in_placement - Validate a buffer to placement.84 *85 * @dev_priv: Driver private.86 * @buf: DMA buffer to move.87 * @placement: The placement to pin it.88 * @interruptible: Use interruptible wait.89 * Return: Zero on success, Negative error code on failure. In particular90 * -ERESTARTSYS if interrupted by a signal91 */92static int vmw_bo_pin_in_placement(struct vmw_private *dev_priv,93 struct vmw_bo *buf,94 struct ttm_placement *placement,95 bool interruptible)96{97 struct ttm_operation_ctx ctx = {interruptible, false };98 struct ttm_buffer_object *bo = &buf->tbo;99 int ret;100 101 vmw_execbuf_release_pinned_bo(dev_priv);102 103 ret = ttm_bo_reserve(bo, interruptible, false, NULL);104 if (unlikely(ret != 0))105 goto err;106 107 ret = ttm_bo_validate(bo, placement, &ctx);108 if (!ret)109 vmw_bo_pin_reserved(buf, true);110 111 ttm_bo_unreserve(bo);112err:113 return ret;114}115 116 117/**118 * vmw_bo_pin_in_vram_or_gmr - Move a buffer to vram or gmr.119 *120 * This function takes the reservation_sem in write mode.121 * Flushes and unpins the query bo to avoid failures.122 *123 * @dev_priv: Driver private.124 * @buf: DMA buffer to move.125 * @interruptible: Use interruptible wait.126 * Return: Zero on success, Negative error code on failure. In particular127 * -ERESTARTSYS if interrupted by a signal128 */129int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,130 struct vmw_bo *buf,131 bool interruptible)132{133 struct ttm_operation_ctx ctx = {interruptible, false };134 struct ttm_buffer_object *bo = &buf->tbo;135 int ret;136 137 vmw_execbuf_release_pinned_bo(dev_priv);138 139 ret = ttm_bo_reserve(bo, interruptible, false, NULL);140 if (unlikely(ret != 0))141 goto err;142 143 vmw_bo_placement_set(buf,144 VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM,145 VMW_BO_DOMAIN_GMR);146 ret = ttm_bo_validate(bo, &buf->placement, &ctx);147 if (likely(ret == 0) || ret == -ERESTARTSYS)148 goto out_unreserve;149 150 vmw_bo_placement_set(buf,151 VMW_BO_DOMAIN_VRAM,152 VMW_BO_DOMAIN_VRAM);153 ret = ttm_bo_validate(bo, &buf->placement, &ctx);154 155out_unreserve:156 if (!ret)157 vmw_bo_pin_reserved(buf, true);158 159 ttm_bo_unreserve(bo);160err:161 return ret;162}163 164 165/**166 * vmw_bo_pin_in_vram - Move a buffer to vram.167 *168 * This function takes the reservation_sem in write mode.169 * Flushes and unpins the query bo to avoid failures.170 *171 * @dev_priv: Driver private.172 * @buf: DMA buffer to move.173 * @interruptible: Use interruptible wait.174 * Return: Zero on success, Negative error code on failure. In particular175 * -ERESTARTSYS if interrupted by a signal176 */177int vmw_bo_pin_in_vram(struct vmw_private *dev_priv,178 struct vmw_bo *buf,179 bool interruptible)180{181 return vmw_bo_pin_in_placement(dev_priv, buf, &vmw_vram_placement,182 interruptible);183}184 185 186/**187 * vmw_bo_pin_in_start_of_vram - Move a buffer to start of vram.188 *189 * This function takes the reservation_sem in write mode.190 * Flushes and unpins the query bo to avoid failures.191 *192 * @dev_priv: Driver private.193 * @buf: DMA buffer to pin.194 * @interruptible: Use interruptible wait.195 * Return: Zero on success, Negative error code on failure. In particular196 * -ERESTARTSYS if interrupted by a signal197 */198int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,199 struct vmw_bo *buf,200 bool interruptible)201{202 struct ttm_operation_ctx ctx = {interruptible, false };203 struct ttm_buffer_object *bo = &buf->tbo;204 int ret = 0;205 206 vmw_execbuf_release_pinned_bo(dev_priv);207 ret = ttm_bo_reserve(bo, interruptible, false, NULL);208 if (unlikely(ret != 0))209 goto err_unlock;210 211 /*212 * Is this buffer already in vram but not at the start of it?213 * In that case, evict it first because TTM isn't good at handling214 * that situation.215 */216 if (bo->resource->mem_type == TTM_PL_VRAM &&217 bo->resource->start < PFN_UP(bo->resource->size) &&218 bo->resource->start > 0 &&219 buf->tbo.pin_count == 0) {220 ctx.interruptible = false;221 vmw_bo_placement_set(buf,222 VMW_BO_DOMAIN_SYS,223 VMW_BO_DOMAIN_SYS);224 (void)ttm_bo_validate(bo, &buf->placement, &ctx);225 }226 227 vmw_bo_placement_set(buf,228 VMW_BO_DOMAIN_VRAM,229 VMW_BO_DOMAIN_VRAM);230 buf->places[0].lpfn = PFN_UP(bo->resource->size);231 buf->busy_places[0].lpfn = PFN_UP(bo->resource->size);232 ret = ttm_bo_validate(bo, &buf->placement, &ctx);233 234 /* For some reason we didn't end up at the start of vram */235 WARN_ON(ret == 0 && bo->resource->start != 0);236 if (!ret)237 vmw_bo_pin_reserved(buf, true);238 239 ttm_bo_unreserve(bo);240err_unlock:241 242 return ret;243}244 245 246/**247 * vmw_bo_unpin - Unpin the buffer given buffer, does not move the buffer.248 *249 * This function takes the reservation_sem in write mode.250 *251 * @dev_priv: Driver private.252 * @buf: DMA buffer to unpin.253 * @interruptible: Use interruptible wait.254 * Return: Zero on success, Negative error code on failure. In particular255 * -ERESTARTSYS if interrupted by a signal256 */257int vmw_bo_unpin(struct vmw_private *dev_priv,258 struct vmw_bo *buf,259 bool interruptible)260{261 struct ttm_buffer_object *bo = &buf->tbo;262 int ret;263 264 ret = ttm_bo_reserve(bo, interruptible, false, NULL);265 if (unlikely(ret != 0))266 goto err;267 268 vmw_bo_pin_reserved(buf, false);269 270 ttm_bo_unreserve(bo);271 272err:273 return ret;274}275 276/**277 * vmw_bo_get_guest_ptr - Get the guest ptr representing the current placement278 * of a buffer.279 *280 * @bo: Pointer to a struct ttm_buffer_object. Must be pinned or reserved.281 * @ptr: SVGAGuestPtr returning the result.282 */283void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *bo,284 SVGAGuestPtr *ptr)285{286 if (bo->resource->mem_type == TTM_PL_VRAM) {287 ptr->gmrId = SVGA_GMR_FRAMEBUFFER;288 ptr->offset = bo->resource->start << PAGE_SHIFT;289 } else {290 ptr->gmrId = bo->resource->start;291 ptr->offset = 0;292 }293}294 295 296/**297 * vmw_bo_pin_reserved - Pin or unpin a buffer object without moving it.298 *299 * @vbo: The buffer object. Must be reserved.300 * @pin: Whether to pin or unpin.301 *302 */303void vmw_bo_pin_reserved(struct vmw_bo *vbo, bool pin)304{305 struct ttm_operation_ctx ctx = { false, true };306 struct ttm_place pl;307 struct ttm_placement placement;308 struct ttm_buffer_object *bo = &vbo->tbo;309 uint32_t old_mem_type = bo->resource->mem_type;310 int ret;311 312 dma_resv_assert_held(bo->base.resv);313 314 if (pin == !!bo->pin_count)315 return;316 317 pl.fpfn = 0;318 pl.lpfn = 0;319 pl.mem_type = bo->resource->mem_type;320 pl.flags = bo->resource->placement;321 322 memset(&placement, 0, sizeof(placement));323 placement.num_placement = 1;324 placement.placement = &pl;325 326 ret = ttm_bo_validate(bo, &placement, &ctx);327 328 BUG_ON(ret != 0 || bo->resource->mem_type != old_mem_type);329 330 if (pin)331 ttm_bo_pin(bo);332 else333 ttm_bo_unpin(bo);334}335 336/**337 * vmw_bo_map_and_cache - Map a buffer object and cache the map338 *339 * @vbo: The buffer object to map340 * Return: A kernel virtual address or NULL if mapping failed.341 *342 * This function maps a buffer object into the kernel address space, or343 * returns the virtual kernel address of an already existing map. The virtual344 * address remains valid as long as the buffer object is pinned or reserved.345 * The cached map is torn down on either346 * 1) Buffer object move347 * 2) Buffer object swapout348 * 3) Buffer object destruction349 *350 */351void *vmw_bo_map_and_cache(struct vmw_bo *vbo)352{353 return vmw_bo_map_and_cache_size(vbo, vbo->tbo.base.size);354}355 356void *vmw_bo_map_and_cache_size(struct vmw_bo *vbo, size_t size)357{358 struct ttm_buffer_object *bo = &vbo->tbo;359 bool not_used;360 void *virtual;361 int ret;362 363 atomic_inc(&vbo->map_count);364 365 virtual = ttm_kmap_obj_virtual(&vbo->map, ¬_used);366 if (virtual)367 return virtual;368 369 ret = ttm_bo_kmap(bo, 0, PFN_UP(size), &vbo->map);370 if (ret)371 DRM_ERROR("Buffer object map failed: %d (size: bo = %zu, map = %zu).\n",372 ret, bo->base.size, size);373 374 return ttm_kmap_obj_virtual(&vbo->map, ¬_used);375}376 377 378/**379 * vmw_bo_unmap - Tear down a cached buffer object map.380 *381 * @vbo: The buffer object whose map we are tearing down.382 *383 * This function tears down a cached map set up using384 * vmw_bo_map_and_cache().385 */386void vmw_bo_unmap(struct vmw_bo *vbo)387{388 int map_count;389 390 if (vbo->map.bo == NULL)391 return;392 393 map_count = atomic_dec_return(&vbo->map_count);394 395 if (!map_count) {396 ttm_bo_kunmap(&vbo->map);397 vbo->map.bo = NULL;398 }399}400 401 402/**403 * vmw_bo_init - Initialize a vmw buffer object404 *405 * @dev_priv: Pointer to the device private struct406 * @vmw_bo: Buffer object to initialize407 * @params: Parameters used to initialize the buffer object408 * @destroy: The function used to delete the buffer object409 * Returns: Zero on success, negative error code on error.410 *411 */412static int vmw_bo_init(struct vmw_private *dev_priv,413 struct vmw_bo *vmw_bo,414 struct vmw_bo_params *params,415 void (*destroy)(struct ttm_buffer_object *))416{417 struct ttm_operation_ctx ctx = {418 .interruptible = params->bo_type != ttm_bo_type_kernel,419 .no_wait_gpu = false,420 .resv = params->resv,421 };422 struct ttm_device *bdev = &dev_priv->bdev;423 struct drm_device *vdev = &dev_priv->drm;424 int ret;425 426 memset(vmw_bo, 0, sizeof(*vmw_bo));427 428 BUILD_BUG_ON(TTM_MAX_BO_PRIORITY <= 3);429 vmw_bo->tbo.priority = 3;430 vmw_bo->res_tree = RB_ROOT;431 xa_init(&vmw_bo->detached_resources);432 atomic_set(&vmw_bo->map_count, 0);433 434 params->size = ALIGN(params->size, PAGE_SIZE);435 drm_gem_private_object_init(vdev, &vmw_bo->tbo.base, params->size);436 437 vmw_bo_placement_set(vmw_bo, params->domain, params->busy_domain);438 ret = ttm_bo_init_reserved(bdev, &vmw_bo->tbo, params->bo_type,439 &vmw_bo->placement, 0, &ctx,440 params->sg, params->resv, destroy);441 if (unlikely(ret))442 return ret;443 444 if (params->pin)445 ttm_bo_pin(&vmw_bo->tbo);446 ttm_bo_unreserve(&vmw_bo->tbo);447 448 return 0;449}450 451int vmw_bo_create(struct vmw_private *vmw,452 struct vmw_bo_params *params,453 struct vmw_bo **p_bo)454{455 int ret;456 457 *p_bo = kmalloc(sizeof(**p_bo), GFP_KERNEL);458 if (unlikely(!*p_bo)) {459 DRM_ERROR("Failed to allocate a buffer.\n");460 return -ENOMEM;461 }462 463 /*464 * vmw_bo_init will delete the *p_bo object if it fails465 */466 ret = vmw_bo_init(vmw, *p_bo, params, vmw_bo_free);467 if (unlikely(ret != 0))468 goto out_error;469 470 return ret;471out_error:472 *p_bo = NULL;473 return ret;474}475 476/**477 * vmw_user_bo_synccpu_grab - Grab a struct vmw_bo for cpu478 * access, idling previous GPU operations on the buffer and optionally479 * blocking it for further command submissions.480 *481 * @vmw_bo: Pointer to the buffer object being grabbed for CPU access482 * @flags: Flags indicating how the grab should be performed.483 * Return: Zero on success, Negative error code on error. In particular,484 * -EBUSY will be returned if a dontblock operation is requested and the485 * buffer object is busy, and -ERESTARTSYS will be returned if a wait is486 * interrupted by a signal.487 *488 * A blocking grab will be automatically released when @tfile is closed.489 */490static int vmw_user_bo_synccpu_grab(struct vmw_bo *vmw_bo,491 uint32_t flags)492{493 bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);494 struct ttm_buffer_object *bo = &vmw_bo->tbo;495 int ret;496 497 if (flags & drm_vmw_synccpu_allow_cs) {498 long lret;499 500 lret = dma_resv_wait_timeout(bo->base.resv, DMA_RESV_USAGE_READ,501 true, nonblock ? 0 :502 MAX_SCHEDULE_TIMEOUT);503 if (!lret)504 return -EBUSY;505 else if (lret < 0)506 return lret;507 return 0;508 }509 510 ret = ttm_bo_reserve(bo, true, nonblock, NULL);511 if (unlikely(ret != 0))512 return ret;513 514 ret = ttm_bo_wait(bo, true, nonblock);515 if (likely(ret == 0))516 atomic_inc(&vmw_bo->cpu_writers);517 518 ttm_bo_unreserve(bo);519 if (unlikely(ret != 0))520 return ret;521 522 return ret;523}524 525/**526 * vmw_user_bo_synccpu_release - Release a previous grab for CPU access,527 * and unblock command submission on the buffer if blocked.528 *529 * @filp: Identifying the caller.530 * @handle: Handle identifying the buffer object.531 * @flags: Flags indicating the type of release.532 */533static int vmw_user_bo_synccpu_release(struct drm_file *filp,534 uint32_t handle,535 uint32_t flags)536{537 struct vmw_bo *vmw_bo;538 int ret = vmw_user_bo_lookup(filp, handle, &vmw_bo);539 540 if (!ret) {541 if (!(flags & drm_vmw_synccpu_allow_cs)) {542 atomic_dec(&vmw_bo->cpu_writers);543 }544 vmw_user_bo_unref(&vmw_bo);545 }546 547 return ret;548}549 550 551/**552 * vmw_user_bo_synccpu_ioctl - ioctl function implementing the synccpu553 * functionality.554 *555 * @dev: Identifies the drm device.556 * @data: Pointer to the ioctl argument.557 * @file_priv: Identifies the caller.558 * Return: Zero on success, negative error code on error.559 *560 * This function checks the ioctl arguments for validity and calls the561 * relevant synccpu functions.562 */563int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,564 struct drm_file *file_priv)565{566 struct drm_vmw_synccpu_arg *arg =567 (struct drm_vmw_synccpu_arg *) data;568 struct vmw_bo *vbo;569 int ret;570 571 if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0572 || (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write |573 drm_vmw_synccpu_dontblock |574 drm_vmw_synccpu_allow_cs)) != 0) {575 DRM_ERROR("Illegal synccpu flags.\n");576 return -EINVAL;577 }578 579 switch (arg->op) {580 case drm_vmw_synccpu_grab:581 ret = vmw_user_bo_lookup(file_priv, arg->handle, &vbo);582 if (unlikely(ret != 0))583 return ret;584 585 ret = vmw_user_bo_synccpu_grab(vbo, arg->flags);586 vmw_user_bo_unref(&vbo);587 if (unlikely(ret != 0)) {588 if (ret == -ERESTARTSYS || ret == -EBUSY)589 return -EBUSY;590 DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n",591 (unsigned int) arg->handle);592 return ret;593 }594 break;595 case drm_vmw_synccpu_release:596 ret = vmw_user_bo_synccpu_release(file_priv,597 arg->handle,598 arg->flags);599 if (unlikely(ret != 0)) {600 DRM_ERROR("Failed synccpu release on handle 0x%08x.\n",601 (unsigned int) arg->handle);602 return ret;603 }604 break;605 default:606 DRM_ERROR("Invalid synccpu operation.\n");607 return -EINVAL;608 }609 610 return 0;611}612 613/**614 * vmw_bo_unref_ioctl - Generic handle close ioctl.615 *616 * @dev: Identifies the drm device.617 * @data: Pointer to the ioctl argument.618 * @file_priv: Identifies the caller.619 * Return: Zero on success, negative error code on error.620 *621 * This function checks the ioctl arguments for validity and closes a622 * handle to a TTM base object, optionally freeing the object.623 */624int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,625 struct drm_file *file_priv)626{627 struct drm_vmw_unref_dmabuf_arg *arg =628 (struct drm_vmw_unref_dmabuf_arg *)data;629 630 return drm_gem_handle_delete(file_priv, arg->handle);631}632 633 634/**635 * vmw_user_bo_lookup - Look up a vmw user buffer object from a handle.636 *637 * @filp: The file the handle is registered with.638 * @handle: The user buffer object handle639 * @out: Pointer to a where a pointer to the embedded640 * struct vmw_bo should be placed.641 * Return: Zero on success, Negative error code on error.642 *643 * The vmw buffer object pointer will be refcounted (both ttm and gem)644 */645int vmw_user_bo_lookup(struct drm_file *filp,646 u32 handle,647 struct vmw_bo **out)648{649 struct drm_gem_object *gobj;650 651 gobj = drm_gem_object_lookup(filp, handle);652 if (!gobj) {653 DRM_ERROR("Invalid buffer object handle 0x%08lx.\n",654 (unsigned long)handle);655 return -ESRCH;656 }657 658 *out = to_vmw_bo(gobj);659 660 return 0;661}662 663/**664 * vmw_bo_fence_single - Utility function to fence a single TTM buffer665 * object without unreserving it.666 *667 * @bo: Pointer to the struct ttm_buffer_object to fence.668 * @fence: Pointer to the fence. If NULL, this function will669 * insert a fence into the command stream..670 *671 * Contrary to the ttm_eu version of this function, it takes only672 * a single buffer object instead of a list, and it also doesn't673 * unreserve the buffer object, which needs to be done separately.674 */675void vmw_bo_fence_single(struct ttm_buffer_object *bo,676 struct vmw_fence_obj *fence)677{678 struct ttm_device *bdev = bo->bdev;679 struct vmw_private *dev_priv = vmw_priv_from_ttm(bdev);680 int ret;681 682 if (fence == NULL)683 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);684 else685 dma_fence_get(&fence->base);686 687 ret = dma_resv_reserve_fences(bo->base.resv, 1);688 if (!ret)689 dma_resv_add_fence(bo->base.resv, &fence->base,690 DMA_RESV_USAGE_KERNEL);691 else692 /* Last resort fallback when we are OOM */693 dma_fence_wait(&fence->base, false);694 dma_fence_put(&fence->base);695}696 697/**698 * vmw_bo_swap_notify - swapout notify callback.699 *700 * @bo: The buffer object to be swapped out.701 */702void vmw_bo_swap_notify(struct ttm_buffer_object *bo)703{704 /* Kill any cached kernel maps before swapout */705 vmw_bo_unmap(to_vmw_bo(&bo->base));706}707 708 709/**710 * vmw_bo_move_notify - TTM move_notify_callback711 *712 * @bo: The TTM buffer object about to move.713 * @mem: The struct ttm_resource indicating to what memory714 * region the move is taking place.715 *716 * Detaches cached maps and device bindings that require that the717 * buffer doesn't move.718 */719void vmw_bo_move_notify(struct ttm_buffer_object *bo,720 struct ttm_resource *mem)721{722 struct vmw_bo *vbo = to_vmw_bo(&bo->base);723 724 /*725 * Kill any cached kernel maps before move to or from VRAM.726 * With other types of moves, the underlying pages stay the same,727 * and the map can be kept.728 */729 if (mem->mem_type == TTM_PL_VRAM || bo->resource->mem_type == TTM_PL_VRAM)730 vmw_bo_unmap(vbo);731 732 /*733 * If we're moving a backup MOB out of MOB placement, then make sure we734 * read back all resource content first, and unbind the MOB from735 * the resource.736 */737 if (mem->mem_type != VMW_PL_MOB && bo->resource->mem_type == VMW_PL_MOB)738 vmw_resource_unbind_list(vbo);739}740 741static u32 placement_flags(u32 domain, u32 desired, u32 fallback)742{743 if (desired & fallback & domain)744 return 0;745 746 if (desired & domain)747 return TTM_PL_FLAG_DESIRED;748 749 return TTM_PL_FLAG_FALLBACK;750}751 752static u32753set_placement_list(struct ttm_place *pl, u32 desired, u32 fallback)754{755 u32 domain = desired | fallback;756 u32 n = 0;757 758 /*759 * The placements are ordered according to our preferences760 */761 if (domain & VMW_BO_DOMAIN_MOB) {762 pl[n].mem_type = VMW_PL_MOB;763 pl[n].flags = placement_flags(VMW_BO_DOMAIN_MOB, desired,764 fallback);765 pl[n].fpfn = 0;766 pl[n].lpfn = 0;767 n++;768 }769 if (domain & VMW_BO_DOMAIN_GMR) {770 pl[n].mem_type = VMW_PL_GMR;771 pl[n].flags = placement_flags(VMW_BO_DOMAIN_GMR, desired,772 fallback);773 pl[n].fpfn = 0;774 pl[n].lpfn = 0;775 n++;776 }777 if (domain & VMW_BO_DOMAIN_VRAM) {778 pl[n].mem_type = TTM_PL_VRAM;779 pl[n].flags = placement_flags(VMW_BO_DOMAIN_VRAM, desired,780 fallback);781 pl[n].fpfn = 0;782 pl[n].lpfn = 0;783 n++;784 }785 if (domain & VMW_BO_DOMAIN_WAITABLE_SYS) {786 pl[n].mem_type = VMW_PL_SYSTEM;787 pl[n].flags = placement_flags(VMW_BO_DOMAIN_WAITABLE_SYS,788 desired, fallback);789 pl[n].fpfn = 0;790 pl[n].lpfn = 0;791 n++;792 }793 if (domain & VMW_BO_DOMAIN_SYS) {794 pl[n].mem_type = TTM_PL_SYSTEM;795 pl[n].flags = placement_flags(VMW_BO_DOMAIN_SYS, desired,796 fallback);797 pl[n].fpfn = 0;798 pl[n].lpfn = 0;799 n++;800 }801 802 WARN_ON(!n);803 if (!n) {804 pl[n].mem_type = TTM_PL_SYSTEM;805 pl[n].flags = 0;806 pl[n].fpfn = 0;807 pl[n].lpfn = 0;808 n++;809 }810 return n;811}812 813void vmw_bo_placement_set(struct vmw_bo *bo, u32 domain, u32 busy_domain)814{815 struct ttm_device *bdev = bo->tbo.bdev;816 struct vmw_private *vmw = vmw_priv_from_ttm(bdev);817 struct ttm_placement *pl = &bo->placement;818 bool mem_compatible = false;819 u32 i;820 821 pl->placement = bo->places;822 pl->num_placement = set_placement_list(bo->places, domain, busy_domain);823 824 if (drm_debug_enabled(DRM_UT_DRIVER) && bo->tbo.resource) {825 for (i = 0; i < pl->num_placement; ++i) {826 if (bo->tbo.resource->mem_type == TTM_PL_SYSTEM ||827 bo->tbo.resource->mem_type == pl->placement[i].mem_type)828 mem_compatible = true;829 }830 if (!mem_compatible)831 drm_warn(&vmw->drm,832 "%s: Incompatible transition from "833 "bo->base.resource->mem_type = %u to domain = %u\n",834 __func__, bo->tbo.resource->mem_type, domain);835 }836 837}838 839void vmw_bo_placement_set_default_accelerated(struct vmw_bo *bo)840{841 struct ttm_device *bdev = bo->tbo.bdev;842 struct vmw_private *vmw = vmw_priv_from_ttm(bdev);843 u32 domain = VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM;844 845 if (vmw->has_mob)846 domain = VMW_BO_DOMAIN_MOB;847 848 vmw_bo_placement_set(bo, domain, domain);849}850 851void vmw_bo_add_detached_resource(struct vmw_bo *vbo, struct vmw_resource *res)852{853 xa_store(&vbo->detached_resources, (unsigned long)res, res, GFP_KERNEL);854}855 856void vmw_bo_del_detached_resource(struct vmw_bo *vbo, struct vmw_resource *res)857{858 xa_erase(&vbo->detached_resources, (unsigned long)res);859}860 861struct vmw_surface *vmw_bo_surface(struct vmw_bo *vbo)862{863 unsigned long index;864 struct vmw_resource *res = NULL;865 struct vmw_surface *surf = NULL;866 struct rb_node *rb_itr = vbo->res_tree.rb_node;867 868 if (vbo->is_dumb && vbo->dumb_surface) {869 res = &vbo->dumb_surface->res;870 goto out;871 }872 873 xa_for_each(&vbo->detached_resources, index, res) {874 if (res->func->res_type == vmw_res_surface)875 goto out;876 }877 878 for (rb_itr = rb_first(&vbo->res_tree); rb_itr;879 rb_itr = rb_next(rb_itr)) {880 res = rb_entry(rb_itr, struct vmw_resource, mob_node);881 if (res->func->res_type == vmw_res_surface)882 goto out;883 }884 885out:886 if (res)887 surf = vmw_res_to_srf(res);888 return surf;889}890