1 files changed, 365 insertions, 0 deletions

diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
new file mode 100644
index 000000000000..d9b12e7bc6e1
--- /dev/null
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -0,0 +1,365 @@
+/*
+ * 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);
+        qxl_fence_fini(&bo->fence);
+        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)
+{
+        u32 c = 0;
+
+        qbo->placement.fpfn = 0;
+        qbo->placement.lpfn = 0;
+        qbo->placement.placement = qbo->placements;
+        qbo->placement.busy_placement = qbo->placements;
+        if (domain == QXL_GEM_DOMAIN_VRAM)
+                qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM;
+        if (domain == QXL_GEM_DOMAIN_SURFACE)
+                qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV0;
+        if (domain == QXL_GEM_DOMAIN_CPU)
+                qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+        if (!c)
+                qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+        qbo->placement.num_placement = c;
+        qbo->placement.num_busy_placement = c;
+}
+
+
+int qxl_bo_create(struct qxl_device *qdev,
+                  unsigned long size, bool kernel, u32 domain,
+                  struct qxl_surface *surf,
+                  struct qxl_bo **bo_ptr)
+{
+        struct qxl_bo *bo;
+        enum ttm_bo_type type;
+        int r;
+
+        if (unlikely(qdev->mman.bdev.dev_mapping == NULL))
+                qdev->mman.bdev.dev_mapping = qdev->ddev->dev_mapping;
+        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->gem_base.driver_private = NULL;
+        bo->type = domain;
+        bo->pin_count = 0;
+        bo->surface_id = 0;
+        qxl_fence_init(qdev, &bo->fence);
+        INIT_LIST_HEAD(&bo->list);
+        atomic_set(&bo->reserve_count, 0);
+        if (surf)
+                bo->surf = *surf;
+
+        qxl_ttm_placement_from_domain(bo, domain);
+
+        r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
+                        &bo->placement, 0, !kernel, NULL, size,
+                        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, i;
+
+        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);
+        for (i = 0; i < bo->placement.num_placement; i++)
+                bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
+        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] &= ~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;
+}
+
+void qxl_bo_list_unreserve(struct qxl_reloc_list *reloc_list, bool failed)
+{
+        struct qxl_bo_list *entry, *sf;
+
+        list_for_each_entry_safe(entry, sf, &reloc_list->bos, lhead) {
+                qxl_bo_unreserve(entry->bo);
+                list_del(&entry->lhead);
+                kfree(entry);
+        }
+}
+
+int qxl_bo_list_add(struct qxl_reloc_list *reloc_list, struct qxl_bo *bo)
+{
+        struct qxl_bo_list *entry;
+        int ret;
+
+        list_for_each_entry(entry, &reloc_list->bos, lhead) {
+                if (entry->bo == bo)
+                        return 0;
+        }
+
+        entry = kmalloc(sizeof(struct qxl_bo_list), GFP_KERNEL);
+        if (!entry)
+                return -ENOMEM;
+
+        entry->bo = bo;
+        list_add(&entry->lhead, &reloc_list->bos);
+
+        ret = qxl_bo_reserve(bo, false);
+        if (ret)
+                return ret;
+
+        if (!bo->pin_count) {
+                qxl_ttm_placement_from_domain(bo, bo->type);
+                ret = ttm_bo_validate(&bo->tbo, &bo->placement,
+                                      true, false);
+                if (ret)
+                        return ret;
+        }
+
+        /* allocate a surface for reserved + validated buffers */
+        ret = qxl_bo_check_id(bo->gem_base.dev->dev_private, bo);
+        if (ret)
+                return ret;
+        return 0;
+}