diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_bo.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 897 |
1 files changed, 897 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c new file mode 100644 index 000000000000..f031a312c783 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c @@ -0,0 +1,897 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/************************************************************************** + * + * Copyright (c) 2011-2024 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "vmwgfx_bo.h" +#include "vmwgfx_drv.h" +#include "vmwgfx_resource_priv.h" + +#include <drm/ttm/ttm_placement.h> + +static void vmw_bo_release(struct vmw_bo *vbo) +{ + struct vmw_resource *res; + + WARN_ON(kref_read(&vbo->tbo.base.refcount) != 0); + vmw_bo_unmap(vbo); + + xa_destroy(&vbo->detached_resources); + WARN_ON(vbo->is_dumb && !vbo->dumb_surface); + if (vbo->is_dumb && vbo->dumb_surface) { + res = &vbo->dumb_surface->res; + WARN_ON(vbo != res->guest_memory_bo); + WARN_ON(!res->guest_memory_bo); + if (res->guest_memory_bo) { + /* Reserve and switch the backing mob. */ + mutex_lock(&res->dev_priv->cmdbuf_mutex); + (void)vmw_resource_reserve(res, false, true); + vmw_resource_mob_detach(res); + if (res->dirty) + res->func->dirty_free(res); + if (res->coherent) + vmw_bo_dirty_release(res->guest_memory_bo); + res->guest_memory_bo = NULL; + res->guest_memory_offset = 0; + vmw_resource_unreserve(res, true, false, false, NULL, + 0); + mutex_unlock(&res->dev_priv->cmdbuf_mutex); + } + vmw_surface_unreference(&vbo->dumb_surface); + } + drm_gem_object_release(&vbo->tbo.base); +} + +/** + * vmw_bo_free - vmw_bo destructor + * + * @bo: Pointer to the embedded struct ttm_buffer_object + */ +static void vmw_bo_free(struct ttm_buffer_object *bo) +{ + struct vmw_bo *vbo = to_vmw_bo(&bo->base); + + WARN_ON(!RB_EMPTY_ROOT(&vbo->res_tree)); + vmw_bo_release(vbo); + WARN_ON(vbo->dirty); + kfree(vbo); +} + +/** + * vmw_bo_pin_in_placement - Validate a buffer to placement. + * + * @dev_priv: Driver private. + * @buf: DMA buffer to move. + * @placement: The placement to pin it. + * @interruptible: Use interruptible wait. + * Return: Zero on success, Negative error code on failure. In particular + * -ERESTARTSYS if interrupted by a signal + */ +static int vmw_bo_pin_in_placement(struct vmw_private *dev_priv, + struct vmw_bo *buf, + struct ttm_placement *placement, + bool interruptible) +{ + struct ttm_operation_ctx ctx = {interruptible, false }; + struct ttm_buffer_object *bo = &buf->tbo; + int ret; + + vmw_execbuf_release_pinned_bo(dev_priv); + + ret = ttm_bo_reserve(bo, interruptible, false, NULL); + if (unlikely(ret != 0)) + goto err; + + ret = ttm_bo_validate(bo, placement, &ctx); + if (!ret) + vmw_bo_pin_reserved(buf, true); + + ttm_bo_unreserve(bo); +err: + return ret; +} + + +/** + * vmw_bo_pin_in_vram_or_gmr - Move a buffer to vram or gmr. + * + * This function takes the reservation_sem in write mode. + * Flushes and unpins the query bo to avoid failures. + * + * @dev_priv: Driver private. + * @buf: DMA buffer to move. + * @interruptible: Use interruptible wait. + * Return: Zero on success, Negative error code on failure. In particular + * -ERESTARTSYS if interrupted by a signal + */ +int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv, + struct vmw_bo *buf, + bool interruptible) +{ + struct ttm_operation_ctx ctx = {interruptible, false }; + struct ttm_buffer_object *bo = &buf->tbo; + int ret; + + vmw_execbuf_release_pinned_bo(dev_priv); + + ret = ttm_bo_reserve(bo, interruptible, false, NULL); + if (unlikely(ret != 0)) + goto err; + + vmw_bo_placement_set(buf, + VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM, + VMW_BO_DOMAIN_GMR); + ret = ttm_bo_validate(bo, &buf->placement, &ctx); + if (likely(ret == 0) || ret == -ERESTARTSYS) + goto out_unreserve; + + vmw_bo_placement_set(buf, + VMW_BO_DOMAIN_VRAM, + VMW_BO_DOMAIN_VRAM); + ret = ttm_bo_validate(bo, &buf->placement, &ctx); + +out_unreserve: + if (!ret) + vmw_bo_pin_reserved(buf, true); + + ttm_bo_unreserve(bo); +err: + return ret; +} + + +/** + * vmw_bo_pin_in_vram - Move a buffer to vram. + * + * This function takes the reservation_sem in write mode. + * Flushes and unpins the query bo to avoid failures. + * + * @dev_priv: Driver private. + * @buf: DMA buffer to move. + * @interruptible: Use interruptible wait. + * Return: Zero on success, Negative error code on failure. In particular + * -ERESTARTSYS if interrupted by a signal + */ +int vmw_bo_pin_in_vram(struct vmw_private *dev_priv, + struct vmw_bo *buf, + bool interruptible) +{ + return vmw_bo_pin_in_placement(dev_priv, buf, &vmw_vram_placement, + interruptible); +} + + +/** + * vmw_bo_pin_in_start_of_vram - Move a buffer to start of vram. + * + * This function takes the reservation_sem in write mode. + * Flushes and unpins the query bo to avoid failures. + * + * @dev_priv: Driver private. + * @buf: DMA buffer to pin. + * @interruptible: Use interruptible wait. + * Return: Zero on success, Negative error code on failure. In particular + * -ERESTARTSYS if interrupted by a signal + */ +int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv, + struct vmw_bo *buf, + bool interruptible) +{ + struct ttm_operation_ctx ctx = {interruptible, false }; + struct ttm_buffer_object *bo = &buf->tbo; + int ret = 0; + + vmw_execbuf_release_pinned_bo(dev_priv); + ret = ttm_bo_reserve(bo, interruptible, false, NULL); + if (unlikely(ret != 0)) + goto err_unlock; + + /* + * Is this buffer already in vram but not at the start of it? + * In that case, evict it first because TTM isn't good at handling + * that situation. + */ + if (bo->resource->mem_type == TTM_PL_VRAM && + bo->resource->start < PFN_UP(bo->resource->size) && + bo->resource->start > 0 && + buf->tbo.pin_count == 0) { + ctx.interruptible = false; + vmw_bo_placement_set(buf, + VMW_BO_DOMAIN_SYS, + VMW_BO_DOMAIN_SYS); + (void)ttm_bo_validate(bo, &buf->placement, &ctx); + } + + vmw_bo_placement_set(buf, + VMW_BO_DOMAIN_VRAM, + VMW_BO_DOMAIN_VRAM); + buf->places[0].lpfn = PFN_UP(bo->resource->size); + ret = ttm_bo_validate(bo, &buf->placement, &ctx); + + /* For some reason we didn't end up at the start of vram */ + WARN_ON(ret == 0 && bo->resource->start != 0); + if (!ret) + vmw_bo_pin_reserved(buf, true); + + ttm_bo_unreserve(bo); +err_unlock: + + return ret; +} + + +/** + * vmw_bo_unpin - Unpin the buffer given buffer, does not move the buffer. + * + * This function takes the reservation_sem in write mode. + * + * @dev_priv: Driver private. + * @buf: DMA buffer to unpin. + * @interruptible: Use interruptible wait. + * Return: Zero on success, Negative error code on failure. In particular + * -ERESTARTSYS if interrupted by a signal + */ +int vmw_bo_unpin(struct vmw_private *dev_priv, + struct vmw_bo *buf, + bool interruptible) +{ + struct ttm_buffer_object *bo = &buf->tbo; + int ret; + + ret = ttm_bo_reserve(bo, interruptible, false, NULL); + if (unlikely(ret != 0)) + goto err; + + vmw_bo_pin_reserved(buf, false); + + ttm_bo_unreserve(bo); + +err: + return ret; +} + +/** + * vmw_bo_get_guest_ptr - Get the guest ptr representing the current placement + * of a buffer. + * + * @bo: Pointer to a struct ttm_buffer_object. Must be pinned or reserved. + * @ptr: SVGAGuestPtr returning the result. + */ +void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *bo, + SVGAGuestPtr *ptr) +{ + if (bo->resource->mem_type == TTM_PL_VRAM) { + ptr->gmrId = SVGA_GMR_FRAMEBUFFER; + ptr->offset = bo->resource->start << PAGE_SHIFT; + } else { + ptr->gmrId = bo->resource->start; + ptr->offset = 0; + } +} + + +/** + * vmw_bo_pin_reserved - Pin or unpin a buffer object without moving it. + * + * @vbo: The buffer object. Must be reserved. + * @pin: Whether to pin or unpin. + * + */ +void vmw_bo_pin_reserved(struct vmw_bo *vbo, bool pin) +{ + struct ttm_operation_ctx ctx = { false, true }; + struct ttm_place pl; + struct ttm_placement placement; + struct ttm_buffer_object *bo = &vbo->tbo; + uint32_t old_mem_type = bo->resource->mem_type; + int ret; + + dma_resv_assert_held(bo->base.resv); + + if (pin == !!bo->pin_count) + return; + + pl.fpfn = 0; + pl.lpfn = 0; + pl.mem_type = bo->resource->mem_type; + pl.flags = bo->resource->placement; + + memset(&placement, 0, sizeof(placement)); + placement.num_placement = 1; + placement.placement = &pl; + + ret = ttm_bo_validate(bo, &placement, &ctx); + + BUG_ON(ret != 0 || bo->resource->mem_type != old_mem_type); + + if (pin) + ttm_bo_pin(bo); + else + ttm_bo_unpin(bo); +} + +/** + * vmw_bo_map_and_cache - Map a buffer object and cache the map + * + * @vbo: The buffer object to map + * Return: A kernel virtual address or NULL if mapping failed. + * + * This function maps a buffer object into the kernel address space, or + * returns the virtual kernel address of an already existing map. The virtual + * address remains valid as long as the buffer object is pinned or reserved. + * The cached map is torn down on either + * 1) Buffer object move + * 2) Buffer object swapout + * 3) Buffer object destruction + * + */ +void *vmw_bo_map_and_cache(struct vmw_bo *vbo) +{ + return vmw_bo_map_and_cache_size(vbo, vbo->tbo.base.size); +} + +void *vmw_bo_map_and_cache_size(struct vmw_bo *vbo, size_t size) +{ + struct ttm_buffer_object *bo = &vbo->tbo; + bool not_used; + void *virtual; + int ret; + + atomic_inc(&vbo->map_count); + + virtual = ttm_kmap_obj_virtual(&vbo->map, ¬_used); + if (virtual) + return virtual; + + ret = ttm_bo_kmap(bo, 0, PFN_UP(size), &vbo->map); + if (ret) + DRM_ERROR("Buffer object map failed: %d (size: bo = %zu, map = %zu).\n", + ret, bo->base.size, size); + + return ttm_kmap_obj_virtual(&vbo->map, ¬_used); +} + + +/** + * vmw_bo_unmap - Tear down a cached buffer object map. + * + * @vbo: The buffer object whose map we are tearing down. + * + * This function tears down a cached map set up using + * vmw_bo_map_and_cache(). + */ +void vmw_bo_unmap(struct vmw_bo *vbo) +{ + int map_count; + + if (vbo->map.bo == NULL) + return; + + map_count = atomic_dec_return(&vbo->map_count); + + if (!map_count) { + ttm_bo_kunmap(&vbo->map); + vbo->map.bo = NULL; + } +} + + +/** + * vmw_bo_init - Initialize a vmw buffer object + * + * @dev_priv: Pointer to the device private struct + * @vmw_bo: Buffer object to initialize + * @params: Parameters used to initialize the buffer object + * @destroy: The function used to delete the buffer object + * Returns: Zero on success, negative error code on error. + * + */ +static int vmw_bo_init(struct vmw_private *dev_priv, + struct vmw_bo *vmw_bo, + struct vmw_bo_params *params, + void (*destroy)(struct ttm_buffer_object *)) +{ + struct ttm_operation_ctx ctx = { + .interruptible = params->bo_type != ttm_bo_type_kernel, + .no_wait_gpu = false, + .resv = params->resv, + }; + struct ttm_device *bdev = &dev_priv->bdev; + struct drm_device *vdev = &dev_priv->drm; + int ret; + + memset(vmw_bo, 0, sizeof(*vmw_bo)); + + BUILD_BUG_ON(TTM_MAX_BO_PRIORITY <= 3); + vmw_bo->tbo.priority = 3; + vmw_bo->res_tree = RB_ROOT; + xa_init(&vmw_bo->detached_resources); + atomic_set(&vmw_bo->map_count, 0); + + params->size = ALIGN(params->size, PAGE_SIZE); + drm_gem_private_object_init(vdev, &vmw_bo->tbo.base, params->size); + + vmw_bo_placement_set(vmw_bo, params->domain, params->busy_domain); + ret = ttm_bo_init_reserved(bdev, &vmw_bo->tbo, params->bo_type, + &vmw_bo->placement, 0, &ctx, + params->sg, params->resv, destroy); + if (unlikely(ret)) + return ret; + + if (params->pin) + ttm_bo_pin(&vmw_bo->tbo); + if (!params->keep_resv) + ttm_bo_unreserve(&vmw_bo->tbo); + + return 0; +} + +int vmw_bo_create(struct vmw_private *vmw, + struct vmw_bo_params *params, + struct vmw_bo **p_bo) +{ + int ret; + + *p_bo = kmalloc(sizeof(**p_bo), GFP_KERNEL); + if (unlikely(!*p_bo)) { + DRM_ERROR("Failed to allocate a buffer.\n"); + return -ENOMEM; + } + + /* + * vmw_bo_init will delete the *p_bo object if it fails + */ + ret = vmw_bo_init(vmw, *p_bo, params, vmw_bo_free); + if (unlikely(ret != 0)) + goto out_error; + + (*p_bo)->tbo.base.funcs = &vmw_gem_object_funcs; + return ret; +out_error: + *p_bo = NULL; + return ret; +} + +/** + * vmw_user_bo_synccpu_grab - Grab a struct vmw_bo for cpu + * access, idling previous GPU operations on the buffer and optionally + * blocking it for further command submissions. + * + * @vmw_bo: Pointer to the buffer object being grabbed for CPU access + * @flags: Flags indicating how the grab should be performed. + * Return: Zero on success, Negative error code on error. In particular, + * -EBUSY will be returned if a dontblock operation is requested and the + * buffer object is busy, and -ERESTARTSYS will be returned if a wait is + * interrupted by a signal. + * + * A blocking grab will be automatically released when @tfile is closed. + */ +static int vmw_user_bo_synccpu_grab(struct vmw_bo *vmw_bo, + uint32_t flags) +{ + bool nonblock = !!(flags & drm_vmw_synccpu_dontblock); + struct ttm_buffer_object *bo = &vmw_bo->tbo; + int ret; + + if (flags & drm_vmw_synccpu_allow_cs) { + long lret; + + lret = dma_resv_wait_timeout(bo->base.resv, DMA_RESV_USAGE_READ, + true, nonblock ? 0 : + MAX_SCHEDULE_TIMEOUT); + if (!lret) + return -EBUSY; + else if (lret < 0) + return lret; + return 0; + } + + ret = ttm_bo_reserve(bo, true, nonblock, NULL); + if (unlikely(ret != 0)) + return ret; + + ret = ttm_bo_wait(bo, true, nonblock); + if (likely(ret == 0)) + atomic_inc(&vmw_bo->cpu_writers); + + ttm_bo_unreserve(bo); + if (unlikely(ret != 0)) + return ret; + + return ret; +} + +/** + * vmw_user_bo_synccpu_release - Release a previous grab for CPU access, + * and unblock command submission on the buffer if blocked. + * + * @filp: Identifying the caller. + * @handle: Handle identifying the buffer object. + * @flags: Flags indicating the type of release. + */ +static int vmw_user_bo_synccpu_release(struct drm_file *filp, + uint32_t handle, + uint32_t flags) +{ + struct vmw_bo *vmw_bo; + int ret = vmw_user_bo_lookup(filp, handle, &vmw_bo); + + if (!ret) { + if (!(flags & drm_vmw_synccpu_allow_cs)) { + atomic_dec(&vmw_bo->cpu_writers); + } + vmw_user_bo_unref(&vmw_bo); + } + + return ret; +} + + +/** + * vmw_user_bo_synccpu_ioctl - ioctl function implementing the synccpu + * functionality. + * + * @dev: Identifies the drm device. + * @data: Pointer to the ioctl argument. + * @file_priv: Identifies the caller. + * Return: Zero on success, negative error code on error. + * + * This function checks the ioctl arguments for validity and calls the + * relevant synccpu functions. + */ +int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_vmw_synccpu_arg *arg = + (struct drm_vmw_synccpu_arg *) data; + struct vmw_bo *vbo; + int ret; + + if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0 + || (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write | + drm_vmw_synccpu_dontblock | + drm_vmw_synccpu_allow_cs)) != 0) { + DRM_ERROR("Illegal synccpu flags.\n"); + return -EINVAL; + } + + switch (arg->op) { + case drm_vmw_synccpu_grab: + ret = vmw_user_bo_lookup(file_priv, arg->handle, &vbo); + if (unlikely(ret != 0)) + return ret; + + ret = vmw_user_bo_synccpu_grab(vbo, arg->flags); + vmw_user_bo_unref(&vbo); + if (unlikely(ret != 0)) { + if (ret == -ERESTARTSYS || ret == -EBUSY) + return -EBUSY; + DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n", + (unsigned int) arg->handle); + return ret; + } + break; + case drm_vmw_synccpu_release: + ret = vmw_user_bo_synccpu_release(file_priv, + arg->handle, + arg->flags); + if (unlikely(ret != 0)) { + DRM_ERROR("Failed synccpu release on handle 0x%08x.\n", + (unsigned int) arg->handle); + return ret; + } + break; + default: + DRM_ERROR("Invalid synccpu operation.\n"); + return -EINVAL; + } + + return 0; +} + +/** + * vmw_bo_unref_ioctl - Generic handle close ioctl. + * + * @dev: Identifies the drm device. + * @data: Pointer to the ioctl argument. + * @file_priv: Identifies the caller. + * Return: Zero on success, negative error code on error. + * + * This function checks the ioctl arguments for validity and closes a + * handle to a TTM base object, optionally freeing the object. + */ +int vmw_bo_unref_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_vmw_unref_dmabuf_arg *arg = + (struct drm_vmw_unref_dmabuf_arg *)data; + + return drm_gem_handle_delete(file_priv, arg->handle); +} + + +/** + * vmw_user_bo_lookup - Look up a vmw user buffer object from a handle. + * + * @filp: The file the handle is registered with. + * @handle: The user buffer object handle + * @out: Pointer to a where a pointer to the embedded + * struct vmw_bo should be placed. + * Return: Zero on success, Negative error code on error. + * + * The vmw buffer object pointer will be refcounted (both ttm and gem) + */ +int vmw_user_bo_lookup(struct drm_file *filp, + u32 handle, + struct vmw_bo **out) +{ + struct drm_gem_object *gobj; + + gobj = drm_gem_object_lookup(filp, handle); + if (!gobj) { + DRM_ERROR("Invalid buffer object handle 0x%08lx.\n", + (unsigned long)handle); + return -ESRCH; + } + + *out = to_vmw_bo(gobj); + + return 0; +} + +/** + * vmw_bo_fence_single - Utility function to fence a single TTM buffer + * object without unreserving it. + * + * @bo: Pointer to the struct ttm_buffer_object to fence. + * @fence: Pointer to the fence. If NULL, this function will + * insert a fence into the command stream.. + * + * Contrary to the ttm_eu version of this function, it takes only + * a single buffer object instead of a list, and it also doesn't + * unreserve the buffer object, which needs to be done separately. + */ +void vmw_bo_fence_single(struct ttm_buffer_object *bo, + struct vmw_fence_obj *fence) +{ + struct ttm_device *bdev = bo->bdev; + struct vmw_private *dev_priv = vmw_priv_from_ttm(bdev); + int ret; + + if (fence == NULL) + vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); + else + dma_fence_get(&fence->base); + + ret = dma_resv_reserve_fences(bo->base.resv, 1); + if (!ret) + dma_resv_add_fence(bo->base.resv, &fence->base, + DMA_RESV_USAGE_KERNEL); + else + /* Last resort fallback when we are OOM */ + dma_fence_wait(&fence->base, false); + dma_fence_put(&fence->base); +} + +/** + * vmw_bo_swap_notify - swapout notify callback. + * + * @bo: The buffer object to be swapped out. + */ +void vmw_bo_swap_notify(struct ttm_buffer_object *bo) +{ + /* Kill any cached kernel maps before swapout */ + vmw_bo_unmap(to_vmw_bo(&bo->base)); +} + + +/** + * vmw_bo_move_notify - TTM move_notify_callback + * + * @bo: The TTM buffer object about to move. + * @mem: The struct ttm_resource indicating to what memory + * region the move is taking place. + * + * Detaches cached maps and device bindings that require that the + * buffer doesn't move. + */ +void vmw_bo_move_notify(struct ttm_buffer_object *bo, + struct ttm_resource *mem) +{ + struct vmw_bo *vbo = to_vmw_bo(&bo->base); + + /* + * Kill any cached kernel maps before move to or from VRAM. + * With other types of moves, the underlying pages stay the same, + * and the map can be kept. + */ + if (mem->mem_type == TTM_PL_VRAM || bo->resource->mem_type == TTM_PL_VRAM) + vmw_bo_unmap(vbo); + + /* + * If we're moving a backup MOB out of MOB placement, then make sure we + * read back all resource content first, and unbind the MOB from + * the resource. + */ + if (mem->mem_type != VMW_PL_MOB && bo->resource->mem_type == VMW_PL_MOB) + vmw_resource_unbind_list(vbo); +} + +static u32 placement_flags(u32 domain, u32 desired, u32 fallback) +{ + if (desired & fallback & domain) + return 0; + + if (desired & domain) + return TTM_PL_FLAG_DESIRED; + + return TTM_PL_FLAG_FALLBACK; +} + +static u32 +set_placement_list(struct ttm_place *pl, u32 desired, u32 fallback) +{ + u32 domain = desired | fallback; + u32 n = 0; + + /* + * The placements are ordered according to our preferences + */ + if (domain & VMW_BO_DOMAIN_MOB) { + pl[n].mem_type = VMW_PL_MOB; + pl[n].flags = placement_flags(VMW_BO_DOMAIN_MOB, desired, + fallback); + pl[n].fpfn = 0; + pl[n].lpfn = 0; + n++; + } + if (domain & VMW_BO_DOMAIN_GMR) { + pl[n].mem_type = VMW_PL_GMR; + pl[n].flags = placement_flags(VMW_BO_DOMAIN_GMR, desired, + fallback); + pl[n].fpfn = 0; + pl[n].lpfn = 0; + n++; + } + if (domain & VMW_BO_DOMAIN_VRAM) { + pl[n].mem_type = TTM_PL_VRAM; + pl[n].flags = placement_flags(VMW_BO_DOMAIN_VRAM, desired, + fallback); + pl[n].fpfn = 0; + pl[n].lpfn = 0; + n++; + } + if (domain & VMW_BO_DOMAIN_WAITABLE_SYS) { + pl[n].mem_type = VMW_PL_SYSTEM; + pl[n].flags = placement_flags(VMW_BO_DOMAIN_WAITABLE_SYS, + desired, fallback); + pl[n].fpfn = 0; + pl[n].lpfn = 0; + n++; + } + if (domain & VMW_BO_DOMAIN_SYS) { + pl[n].mem_type = TTM_PL_SYSTEM; + pl[n].flags = placement_flags(VMW_BO_DOMAIN_SYS, desired, + fallback); + pl[n].fpfn = 0; + pl[n].lpfn = 0; + n++; + } + + WARN_ON(!n); + if (!n) { + pl[n].mem_type = TTM_PL_SYSTEM; + pl[n].flags = 0; + pl[n].fpfn = 0; + pl[n].lpfn = 0; + n++; + } + return n; +} + +void vmw_bo_placement_set(struct vmw_bo *bo, u32 domain, u32 busy_domain) +{ + struct ttm_device *bdev = bo->tbo.bdev; + struct vmw_private *vmw = vmw_priv_from_ttm(bdev); + struct ttm_placement *pl = &bo->placement; + bool mem_compatible = false; + u32 i; + + pl->placement = bo->places; + pl->num_placement = set_placement_list(bo->places, domain, busy_domain); + + if (drm_debug_enabled(DRM_UT_DRIVER) && bo->tbo.resource) { + for (i = 0; i < pl->num_placement; ++i) { + if (bo->tbo.resource->mem_type == TTM_PL_SYSTEM || + bo->tbo.resource->mem_type == pl->placement[i].mem_type) + mem_compatible = true; + } + if (!mem_compatible) + drm_warn(&vmw->drm, + "%s: Incompatible transition from " + "bo->base.resource->mem_type = %u to domain = %u\n", + __func__, bo->tbo.resource->mem_type, domain); + } + +} + +void vmw_bo_placement_set_default_accelerated(struct vmw_bo *bo) +{ + struct ttm_device *bdev = bo->tbo.bdev; + struct vmw_private *vmw = vmw_priv_from_ttm(bdev); + u32 domain = VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM; + + if (vmw->has_mob) + domain = VMW_BO_DOMAIN_MOB; + + vmw_bo_placement_set(bo, domain, domain); +} + +int vmw_bo_add_detached_resource(struct vmw_bo *vbo, struct vmw_resource *res) +{ + return xa_err(xa_store(&vbo->detached_resources, (unsigned long)res, res, GFP_KERNEL)); +} + +void vmw_bo_del_detached_resource(struct vmw_bo *vbo, struct vmw_resource *res) +{ + xa_erase(&vbo->detached_resources, (unsigned long)res); +} + +struct vmw_surface *vmw_bo_surface(struct vmw_bo *vbo) +{ + unsigned long index; + struct vmw_resource *res = NULL; + struct vmw_surface *surf = NULL; + struct rb_node *rb_itr = vbo->res_tree.rb_node; + + if (vbo->is_dumb && vbo->dumb_surface) { + res = &vbo->dumb_surface->res; + goto out; + } + + xa_for_each(&vbo->detached_resources, index, res) { + if (res->func->res_type == vmw_res_surface) + goto out; + } + + for (rb_itr = rb_first(&vbo->res_tree); rb_itr; + rb_itr = rb_next(rb_itr)) { + res = rb_entry(rb_itr, struct vmw_resource, mob_node); + if (res->func->res_type == vmw_res_surface) + goto out; + } + +out: + if (res) + surf = vmw_res_to_srf(res); + return surf; +} + +s32 vmw_bo_mobid(struct vmw_bo *vbo) +{ + WARN_ON(vbo->tbo.resource->mem_type != VMW_PL_MOB); + return (s32)vbo->tbo.resource->start; +} |