419 lines
9.3 KiB
C
419 lines
9.3 KiB
C
/*
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* Copyright 2013 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie
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* Alon Levy
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*/
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#include <linux/iosys-map.h>
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#include <linux/io-mapping.h>
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#include "qxl_drv.h"
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#include "qxl_object.h"
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static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
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{
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struct qxl_bo *bo;
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struct qxl_device *qdev;
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bo = to_qxl_bo(tbo);
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qdev = to_qxl(bo->tbo.base.dev);
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qxl_surface_evict(qdev, bo, false);
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WARN_ON_ONCE(bo->map_count > 0);
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mutex_lock(&qdev->gem.mutex);
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list_del_init(&bo->list);
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mutex_unlock(&qdev->gem.mutex);
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drm_gem_object_release(&bo->tbo.base);
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kfree(bo);
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}
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bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo)
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{
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if (bo->destroy == &qxl_ttm_bo_destroy)
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return true;
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return false;
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}
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void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain)
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{
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u32 c = 0;
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u32 pflag = 0;
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unsigned int i;
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if (qbo->tbo.base.size <= PAGE_SIZE)
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pflag |= TTM_PL_FLAG_TOPDOWN;
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qbo->placement.placement = qbo->placements;
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if (domain == QXL_GEM_DOMAIN_VRAM) {
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qbo->placements[c].mem_type = TTM_PL_VRAM;
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qbo->placements[c++].flags = pflag;
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}
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if (domain == QXL_GEM_DOMAIN_SURFACE) {
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qbo->placements[c].mem_type = TTM_PL_PRIV;
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qbo->placements[c++].flags = pflag;
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qbo->placements[c].mem_type = TTM_PL_VRAM;
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qbo->placements[c++].flags = pflag;
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}
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if (domain == QXL_GEM_DOMAIN_CPU) {
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qbo->placements[c].mem_type = TTM_PL_SYSTEM;
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qbo->placements[c++].flags = pflag;
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}
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if (!c) {
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qbo->placements[c].mem_type = TTM_PL_SYSTEM;
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qbo->placements[c++].flags = 0;
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}
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qbo->placement.num_placement = c;
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for (i = 0; i < c; ++i) {
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qbo->placements[i].fpfn = 0;
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qbo->placements[i].lpfn = 0;
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}
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}
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static const struct drm_gem_object_funcs qxl_object_funcs = {
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.free = qxl_gem_object_free,
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.open = qxl_gem_object_open,
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.close = qxl_gem_object_close,
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.pin = qxl_gem_prime_pin,
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.unpin = qxl_gem_prime_unpin,
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.get_sg_table = qxl_gem_prime_get_sg_table,
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.vmap = qxl_gem_prime_vmap,
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.vunmap = qxl_gem_prime_vunmap,
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.mmap = drm_gem_ttm_mmap,
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.print_info = drm_gem_ttm_print_info,
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};
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int qxl_bo_create(struct qxl_device *qdev, unsigned long size,
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bool kernel, bool pinned, u32 domain, u32 priority,
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struct qxl_surface *surf,
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struct qxl_bo **bo_ptr)
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{
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struct ttm_operation_ctx ctx = { !kernel, false };
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struct qxl_bo *bo;
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enum ttm_bo_type type;
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int r;
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if (kernel)
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type = ttm_bo_type_kernel;
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else
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type = ttm_bo_type_device;
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*bo_ptr = NULL;
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bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL);
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if (bo == NULL)
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return -ENOMEM;
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size = roundup(size, PAGE_SIZE);
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r = drm_gem_object_init(&qdev->ddev, &bo->tbo.base, size);
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if (unlikely(r)) {
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kfree(bo);
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return r;
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}
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bo->tbo.base.funcs = &qxl_object_funcs;
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bo->type = domain;
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bo->surface_id = 0;
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INIT_LIST_HEAD(&bo->list);
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if (surf)
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bo->surf = *surf;
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qxl_ttm_placement_from_domain(bo, domain);
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bo->tbo.priority = priority;
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r = ttm_bo_init_reserved(&qdev->mman.bdev, &bo->tbo, type,
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&bo->placement, 0, &ctx, NULL, NULL,
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&qxl_ttm_bo_destroy);
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if (unlikely(r != 0)) {
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if (r != -ERESTARTSYS)
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dev_err(qdev->ddev.dev,
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"object_init failed for (%lu, 0x%08X)\n",
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size, domain);
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return r;
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}
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if (pinned)
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ttm_bo_pin(&bo->tbo);
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ttm_bo_unreserve(&bo->tbo);
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*bo_ptr = bo;
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return 0;
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}
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int qxl_bo_vmap_locked(struct qxl_bo *bo, struct iosys_map *map)
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{
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int r;
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dma_resv_assert_held(bo->tbo.base.resv);
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if (bo->kptr) {
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bo->map_count++;
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goto out;
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}
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r = ttm_bo_vmap(&bo->tbo, &bo->map);
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if (r) {
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qxl_bo_unpin_locked(bo);
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return r;
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}
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bo->map_count = 1;
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/* TODO: Remove kptr in favor of map everywhere. */
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if (bo->map.is_iomem)
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bo->kptr = (void *)bo->map.vaddr_iomem;
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else
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bo->kptr = bo->map.vaddr;
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out:
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*map = bo->map;
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return 0;
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}
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int qxl_bo_pin_and_vmap(struct qxl_bo *bo, struct iosys_map *map)
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{
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int r;
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r = qxl_bo_reserve(bo);
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if (r)
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return r;
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r = qxl_bo_pin_locked(bo);
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if (r) {
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qxl_bo_unreserve(bo);
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return r;
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}
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r = qxl_bo_vmap_locked(bo, map);
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if (r)
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qxl_bo_unpin_locked(bo);
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qxl_bo_unreserve(bo);
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return r;
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}
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void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
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struct qxl_bo *bo, int page_offset)
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{
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unsigned long offset;
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void *rptr;
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int ret;
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struct io_mapping *map;
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struct iosys_map bo_map;
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if (bo->tbo.resource->mem_type == TTM_PL_VRAM)
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map = qdev->vram_mapping;
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else if (bo->tbo.resource->mem_type == TTM_PL_PRIV)
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map = qdev->surface_mapping;
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else
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goto fallback;
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offset = bo->tbo.resource->start << PAGE_SHIFT;
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return io_mapping_map_atomic_wc(map, offset + page_offset);
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fallback:
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if (bo->kptr) {
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rptr = bo->kptr + (page_offset * PAGE_SIZE);
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return rptr;
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}
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ret = qxl_bo_vmap_locked(bo, &bo_map);
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if (ret)
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return NULL;
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rptr = bo_map.vaddr; /* TODO: Use mapping abstraction properly */
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rptr += page_offset * PAGE_SIZE;
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return rptr;
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}
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void qxl_bo_vunmap_locked(struct qxl_bo *bo)
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{
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dma_resv_assert_held(bo->tbo.base.resv);
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if (bo->kptr == NULL)
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return;
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bo->map_count--;
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if (bo->map_count > 0)
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return;
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bo->kptr = NULL;
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ttm_bo_vunmap(&bo->tbo, &bo->map);
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}
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int qxl_bo_vunmap_and_unpin(struct qxl_bo *bo)
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{
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int r;
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r = qxl_bo_reserve(bo);
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if (r)
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return r;
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qxl_bo_vunmap_locked(bo);
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qxl_bo_unpin_locked(bo);
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qxl_bo_unreserve(bo);
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return 0;
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}
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void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
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struct qxl_bo *bo, void *pmap)
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{
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if ((bo->tbo.resource->mem_type != TTM_PL_VRAM) &&
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(bo->tbo.resource->mem_type != TTM_PL_PRIV))
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goto fallback;
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io_mapping_unmap_atomic(pmap);
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return;
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fallback:
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qxl_bo_vunmap_locked(bo);
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}
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void qxl_bo_unref(struct qxl_bo **bo)
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{
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if ((*bo) == NULL)
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return;
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drm_gem_object_put(&(*bo)->tbo.base);
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*bo = NULL;
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}
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struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo)
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{
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drm_gem_object_get(&bo->tbo.base);
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return bo;
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}
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int qxl_bo_pin_locked(struct qxl_bo *bo)
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{
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struct ttm_operation_ctx ctx = { false, false };
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struct drm_device *ddev = bo->tbo.base.dev;
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int r;
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dma_resv_assert_held(bo->tbo.base.resv);
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if (bo->tbo.pin_count) {
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ttm_bo_pin(&bo->tbo);
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return 0;
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}
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qxl_ttm_placement_from_domain(bo, bo->type);
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r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
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if (likely(r == 0))
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ttm_bo_pin(&bo->tbo);
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if (unlikely(r != 0))
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dev_err(ddev->dev, "%p pin failed\n", bo);
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return r;
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}
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void qxl_bo_unpin_locked(struct qxl_bo *bo)
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{
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dma_resv_assert_held(bo->tbo.base.resv);
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ttm_bo_unpin(&bo->tbo);
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}
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/*
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* Reserve the BO before pinning the object. If the BO was reserved
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* beforehand, use the internal version directly qxl_bo_pin_locked.
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*
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*/
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int qxl_bo_pin(struct qxl_bo *bo)
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{
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int r;
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r = qxl_bo_reserve(bo);
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if (r)
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return r;
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r = qxl_bo_pin_locked(bo);
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qxl_bo_unreserve(bo);
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return r;
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}
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/*
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* Reserve the BO before pinning the object. If the BO was reserved
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* beforehand, use the internal version directly qxl_bo_unpin_locked.
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*
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*/
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int qxl_bo_unpin(struct qxl_bo *bo)
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{
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int r;
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r = qxl_bo_reserve(bo);
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if (r)
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return r;
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qxl_bo_unpin_locked(bo);
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qxl_bo_unreserve(bo);
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return 0;
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}
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void qxl_bo_force_delete(struct qxl_device *qdev)
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{
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struct qxl_bo *bo, *n;
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if (list_empty(&qdev->gem.objects))
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return;
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dev_err(qdev->ddev.dev, "Userspace still has active objects !\n");
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list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) {
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dev_err(qdev->ddev.dev, "%p %p %lu %lu force free\n",
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&bo->tbo.base, bo, (unsigned long)bo->tbo.base.size,
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*((unsigned long *)&bo->tbo.base.refcount));
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mutex_lock(&qdev->gem.mutex);
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list_del_init(&bo->list);
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mutex_unlock(&qdev->gem.mutex);
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/* this should unref the ttm bo */
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drm_gem_object_put(&bo->tbo.base);
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}
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}
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int qxl_bo_init(struct qxl_device *qdev)
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{
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return qxl_ttm_init(qdev);
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}
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void qxl_bo_fini(struct qxl_device *qdev)
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{
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qxl_ttm_fini(qdev);
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}
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int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo)
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{
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int ret;
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if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) {
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/* allocate a surface id for this surface now */
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ret = qxl_surface_id_alloc(qdev, bo);
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if (ret)
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return ret;
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ret = qxl_hw_surface_alloc(qdev, bo);
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if (ret)
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return ret;
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}
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return 0;
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}
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int qxl_surf_evict(struct qxl_device *qdev)
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{
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struct ttm_resource_manager *man;
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man = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV);
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return ttm_resource_manager_evict_all(&qdev->mman.bdev, man);
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}
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int qxl_vram_evict(struct qxl_device *qdev)
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{
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struct ttm_resource_manager *man;
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man = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM);
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return ttm_resource_manager_evict_all(&qdev->mman.bdev, man);
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}
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