--- /dev/null
+/*
+ * Copyright 2013 Red Hat Inc.
+ *
+ * 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, sublicense,
+ * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Dave Airlie
+ * Alon Levy
+ */
+
+#include "qxl_drv.h"
+#include "qxl_object.h"
+
+#include <linux/io-mapping.h>
+static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
+{
+ struct qxl_bo *bo;
+ struct qxl_device *qdev;
+
+ bo = container_of(tbo, struct qxl_bo, tbo);
+ qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
+
+ qxl_surface_evict(qdev, bo, false);
+ mutex_lock(&qdev->gem.mutex);
+ list_del_init(&bo->list);
+ mutex_unlock(&qdev->gem.mutex);
+ drm_gem_object_release(&bo->gem_base);
+ kfree(bo);
+}
+
+bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo)
+{
+ if (bo->destroy == &qxl_ttm_bo_destroy)
+ return true;
+ return false;
+}
+
+void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
+{
+ u32 c = 0;
+ u32 pflag = pinned ? TTM_PL_FLAG_NO_EVICT : 0;
+ unsigned i;
+
+ qbo->placement.placement = qbo->placements;
+ qbo->placement.busy_placement = qbo->placements;
+ if (domain == QXL_GEM_DOMAIN_VRAM)
+ qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
+ if (domain == QXL_GEM_DOMAIN_SURFACE)
+ qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV0 | pflag;
+ if (domain == QXL_GEM_DOMAIN_CPU)
+ qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag;
+ if (!c)
+ qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+ qbo->placement.num_placement = c;
+ qbo->placement.num_busy_placement = c;
+ for (i = 0; i < c; ++i) {
+ qbo->placements[i].fpfn = 0;
+ qbo->placements[i].lpfn = 0;
+ }
+}
+
+
+int qxl_bo_create(struct qxl_device *qdev,
+ unsigned long size, bool kernel, bool pinned, u32 domain,
+ struct qxl_surface *surf,
+ struct qxl_bo **bo_ptr)
+{
+ struct qxl_bo *bo;
+ enum ttm_bo_type type;
+ int r;
+
+ if (kernel)
+ type = ttm_bo_type_kernel;
+ else
+ type = ttm_bo_type_device;
+ *bo_ptr = NULL;
+ bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL);
+ if (bo == NULL)
+ return -ENOMEM;
+ size = roundup(size, PAGE_SIZE);
+ r = drm_gem_object_init(qdev->ddev, &bo->gem_base, size);
+ if (unlikely(r)) {
+ kfree(bo);
+ return r;
+ }
+ bo->type = domain;
+ bo->pin_count = pinned ? 1 : 0;
+ bo->surface_id = 0;
+ INIT_LIST_HEAD(&bo->list);
+
+ if (surf)
+ bo->surf = *surf;
+
+ qxl_ttm_placement_from_domain(bo, domain, pinned);
+
+ r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
+ &bo->placement, 0, !kernel, NULL, size,
+ NULL, NULL, &qxl_ttm_bo_destroy);
+ if (unlikely(r != 0)) {
+ if (r != -ERESTARTSYS)
+ dev_err(qdev->dev,
+ "object_init failed for (%lu, 0x%08X)\n",
+ size, domain);
+ return r;
+ }
+ *bo_ptr = bo;
+ return 0;
+}
+
+int qxl_bo_kmap(struct qxl_bo *bo, void **ptr)
+{
+ bool is_iomem;
+ int r;
+
+ if (bo->kptr) {
+ if (ptr)
+ *ptr = bo->kptr;
+ return 0;
+ }
+ r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
+ if (r)
+ return r;
+ bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
+ if (ptr)
+ *ptr = bo->kptr;
+ return 0;
+}
+
+void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
+ struct qxl_bo *bo, int page_offset)
+{
+ struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type];
+ void *rptr;
+ int ret;
+ struct io_mapping *map;
+
+ if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
+ map = qdev->vram_mapping;
+ else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0)
+ map = qdev->surface_mapping;
+ else
+ goto fallback;
+
+ (void) ttm_mem_io_lock(man, false);
+ ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem);
+ ttm_mem_io_unlock(man);
+
+ return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset);
+fallback:
+ if (bo->kptr) {
+ rptr = bo->kptr + (page_offset * PAGE_SIZE);
+ return rptr;
+ }
+
+ ret = qxl_bo_kmap(bo, &rptr);
+ if (ret)
+ return NULL;
+
+ rptr += page_offset * PAGE_SIZE;
+ return rptr;
+}
+
+void qxl_bo_kunmap(struct qxl_bo *bo)
+{
+ if (bo->kptr == NULL)
+ return;
+ bo->kptr = NULL;
+ ttm_bo_kunmap(&bo->kmap);
+}
+
+void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
+ struct qxl_bo *bo, void *pmap)
+{
+ struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type];
+ struct io_mapping *map;
+
+ if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
+ map = qdev->vram_mapping;
+ else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0)
+ map = qdev->surface_mapping;
+ else
+ goto fallback;
+
+ io_mapping_unmap_atomic(pmap);
+
+ (void) ttm_mem_io_lock(man, false);
+ ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem);
+ ttm_mem_io_unlock(man);
+ return ;
+ fallback:
+ qxl_bo_kunmap(bo);
+}
+
+void qxl_bo_unref(struct qxl_bo **bo)
+{
+ struct ttm_buffer_object *tbo;
+
+ if ((*bo) == NULL)
+ return;
+ tbo = &((*bo)->tbo);
+ ttm_bo_unref(&tbo);
+ if (tbo == NULL)
+ *bo = NULL;
+}
+
+struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo)
+{
+ ttm_bo_reference(&bo->tbo);
+ return bo;
+}
+
+int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr)
+{
+ struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
+ int r;
+
+ if (bo->pin_count) {
+ bo->pin_count++;
+ if (gpu_addr)
+ *gpu_addr = qxl_bo_gpu_offset(bo);
+ return 0;
+ }
+ qxl_ttm_placement_from_domain(bo, domain, true);
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
+ if (likely(r == 0)) {
+ bo->pin_count = 1;
+ if (gpu_addr != NULL)
+ *gpu_addr = qxl_bo_gpu_offset(bo);
+ }
+ if (unlikely(r != 0))
+ dev_err(qdev->dev, "%p pin failed\n", bo);
+ return r;
+}
+
+int qxl_bo_unpin(struct qxl_bo *bo)
+{
+ struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
+ int r, i;
+
+ if (!bo->pin_count) {
+ dev_warn(qdev->dev, "%p unpin not necessary\n", bo);
+ return 0;
+ }
+ bo->pin_count--;
+ if (bo->pin_count)
+ return 0;
+ for (i = 0; i < bo->placement.num_placement; i++)
+ bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
+ if (unlikely(r != 0))
+ dev_err(qdev->dev, "%p validate failed for unpin\n", bo);
+ return r;
+}
+
+void qxl_bo_force_delete(struct qxl_device *qdev)
+{
+ struct qxl_bo *bo, *n;
+
+ if (list_empty(&qdev->gem.objects))
+ return;
+ dev_err(qdev->dev, "Userspace still has active objects !\n");
+ list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) {
+ mutex_lock(&qdev->ddev->struct_mutex);
+ dev_err(qdev->dev, "%p %p %lu %lu force free\n",
+ &bo->gem_base, bo, (unsigned long)bo->gem_base.size,
+ *((unsigned long *)&bo->gem_base.refcount));
+ mutex_lock(&qdev->gem.mutex);
+ list_del_init(&bo->list);
+ mutex_unlock(&qdev->gem.mutex);
+ /* this should unref the ttm bo */
+ drm_gem_object_unreference(&bo->gem_base);
+ mutex_unlock(&qdev->ddev->struct_mutex);
+ }
+}
+
+int qxl_bo_init(struct qxl_device *qdev)
+{
+ return qxl_ttm_init(qdev);
+}
+
+void qxl_bo_fini(struct qxl_device *qdev)
+{
+ qxl_ttm_fini(qdev);
+}
+
+int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo)
+{
+ int ret;
+ if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) {
+ /* allocate a surface id for this surface now */
+ ret = qxl_surface_id_alloc(qdev, bo);
+ if (ret)
+ return ret;
+
+ ret = qxl_hw_surface_alloc(qdev, bo, NULL);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+int qxl_surf_evict(struct qxl_device *qdev)
+{
+ return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
+}
+
+int qxl_vram_evict(struct qxl_device *qdev)
+{
+ return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM);
+}
Code Review / kvmfornfv.git / blobdiff