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- /*
- * 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 <ttm/ttm_bo_api.h>
- #include <ttm/ttm_bo_driver.h>
- #include <ttm/ttm_placement.h>
- #include <ttm/ttm_page_alloc.h>
- #include <ttm/ttm_module.h>
- #include <drm/drmP.h>
- #include <drm/drm.h>
- #include <drm/qxl_drm.h>
- #include "qxl_drv.h"
- #include "qxl_object.h"
- #include <linux/delay.h>
- static int qxl_ttm_debugfs_init(struct qxl_device *qdev);
- static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
- {
- struct qxl_mman *mman;
- struct qxl_device *qdev;
- mman = container_of(bdev, struct qxl_mman, bdev);
- qdev = container_of(mman, struct qxl_device, mman);
- return qdev;
- }
- static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
- {
- return ttm_mem_global_init(ref->object);
- }
- static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
- {
- ttm_mem_global_release(ref->object);
- }
- static int qxl_ttm_global_init(struct qxl_device *qdev)
- {
- struct drm_global_reference *global_ref;
- int r;
- qdev->mman.mem_global_referenced = false;
- global_ref = &qdev->mman.mem_global_ref;
- global_ref->global_type = DRM_GLOBAL_TTM_MEM;
- global_ref->size = sizeof(struct ttm_mem_global);
- global_ref->init = &qxl_ttm_mem_global_init;
- global_ref->release = &qxl_ttm_mem_global_release;
- r = drm_global_item_ref(global_ref);
- if (r != 0) {
- DRM_ERROR("Failed setting up TTM memory accounting "
- "subsystem.\n");
- return r;
- }
- qdev->mman.bo_global_ref.mem_glob =
- qdev->mman.mem_global_ref.object;
- global_ref = &qdev->mman.bo_global_ref.ref;
- global_ref->global_type = DRM_GLOBAL_TTM_BO;
- global_ref->size = sizeof(struct ttm_bo_global);
- global_ref->init = &ttm_bo_global_init;
- global_ref->release = &ttm_bo_global_release;
- r = drm_global_item_ref(global_ref);
- if (r != 0) {
- DRM_ERROR("Failed setting up TTM BO subsystem.\n");
- drm_global_item_unref(&qdev->mman.mem_global_ref);
- return r;
- }
- qdev->mman.mem_global_referenced = true;
- return 0;
- }
- static void qxl_ttm_global_fini(struct qxl_device *qdev)
- {
- if (qdev->mman.mem_global_referenced) {
- drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
- drm_global_item_unref(&qdev->mman.mem_global_ref);
- qdev->mman.mem_global_referenced = false;
- }
- }
- static struct vm_operations_struct qxl_ttm_vm_ops;
- static const struct vm_operations_struct *ttm_vm_ops;
- static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
- {
- struct ttm_buffer_object *bo;
- int r;
- bo = (struct ttm_buffer_object *)vma->vm_private_data;
- if (bo == NULL)
- return VM_FAULT_NOPAGE;
- r = ttm_vm_ops->fault(vma, vmf);
- return r;
- }
- int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
- {
- struct drm_file *file_priv;
- struct qxl_device *qdev;
- int r;
- if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
- pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
- __func__, vma->vm_pgoff);
- return -EINVAL;
- }
- file_priv = filp->private_data;
- qdev = file_priv->minor->dev->dev_private;
- if (qdev == NULL) {
- DRM_ERROR(
- "filp->private_data->minor->dev->dev_private == NULL\n");
- return -EINVAL;
- }
- QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
- __func__, filp->private_data, vma->vm_pgoff);
- r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
- if (unlikely(r != 0))
- return r;
- if (unlikely(ttm_vm_ops == NULL)) {
- ttm_vm_ops = vma->vm_ops;
- qxl_ttm_vm_ops = *ttm_vm_ops;
- qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
- }
- vma->vm_ops = &qxl_ttm_vm_ops;
- return 0;
- }
- static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
- {
- return 0;
- }
- static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
- struct ttm_mem_type_manager *man)
- {
- switch (type) {
- case TTM_PL_SYSTEM:
- /* System memory */
- man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- case TTM_PL_VRAM:
- case TTM_PL_PRIV0:
- /* "On-card" video ram */
- man->func = &ttm_bo_manager_func;
- man->gpu_offset = 0;
- man->flags = TTM_MEMTYPE_FLAG_FIXED |
- TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- default:
- DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
- return -EINVAL;
- }
- return 0;
- }
- static void qxl_evict_flags(struct ttm_buffer_object *bo,
- struct ttm_placement *placement)
- {
- struct qxl_bo *qbo;
- static struct ttm_place placements = {
- .fpfn = 0,
- .lpfn = 0,
- .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
- };
- if (!qxl_ttm_bo_is_qxl_bo(bo)) {
- placement->placement = &placements;
- placement->busy_placement = &placements;
- placement->num_placement = 1;
- placement->num_busy_placement = 1;
- return;
- }
- qbo = container_of(bo, struct qxl_bo, tbo);
- qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
- *placement = qbo->placement;
- }
- static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
- {
- struct qxl_bo *qbo = to_qxl_bo(bo);
- return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
- }
- static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
- {
- struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
- struct qxl_device *qdev = qxl_get_qdev(bdev);
- mem->bus.addr = NULL;
- mem->bus.offset = 0;
- mem->bus.size = mem->num_pages << PAGE_SHIFT;
- mem->bus.base = 0;
- mem->bus.is_iomem = false;
- if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
- return -EINVAL;
- switch (mem->mem_type) {
- case TTM_PL_SYSTEM:
- /* system memory */
- return 0;
- case TTM_PL_VRAM:
- mem->bus.is_iomem = true;
- mem->bus.base = qdev->vram_base;
- mem->bus.offset = mem->start << PAGE_SHIFT;
- break;
- case TTM_PL_PRIV0:
- mem->bus.is_iomem = true;
- mem->bus.base = qdev->surfaceram_base;
- mem->bus.offset = mem->start << PAGE_SHIFT;
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
- {
- }
- /*
- * TTM backend functions.
- */
- struct qxl_ttm_tt {
- struct ttm_dma_tt ttm;
- struct qxl_device *qdev;
- u64 offset;
- };
- static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
- struct ttm_mem_reg *bo_mem)
- {
- struct qxl_ttm_tt *gtt = (void *)ttm;
- gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
- if (!ttm->num_pages) {
- WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
- ttm->num_pages, bo_mem, ttm);
- }
- /* Not implemented */
- return -1;
- }
- static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
- {
- /* Not implemented */
- return -1;
- }
- static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
- {
- struct qxl_ttm_tt *gtt = (void *)ttm;
- ttm_dma_tt_fini(>t->ttm);
- kfree(gtt);
- }
- static struct ttm_backend_func qxl_backend_func = {
- .bind = &qxl_ttm_backend_bind,
- .unbind = &qxl_ttm_backend_unbind,
- .destroy = &qxl_ttm_backend_destroy,
- };
- static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
- {
- int r;
- if (ttm->state != tt_unpopulated)
- return 0;
- r = ttm_pool_populate(ttm);
- if (r)
- return r;
- return 0;
- }
- static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
- {
- ttm_pool_unpopulate(ttm);
- }
- static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
- unsigned long size, uint32_t page_flags,
- struct page *dummy_read_page)
- {
- struct qxl_device *qdev;
- struct qxl_ttm_tt *gtt;
- qdev = qxl_get_qdev(bdev);
- gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
- if (gtt == NULL)
- return NULL;
- gtt->ttm.ttm.func = &qxl_backend_func;
- gtt->qdev = qdev;
- if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags,
- dummy_read_page)) {
- kfree(gtt);
- return NULL;
- }
- return >t->ttm.ttm;
- }
- static void qxl_move_null(struct ttm_buffer_object *bo,
- struct ttm_mem_reg *new_mem)
- {
- struct ttm_mem_reg *old_mem = &bo->mem;
- BUG_ON(old_mem->mm_node != NULL);
- *old_mem = *new_mem;
- new_mem->mm_node = NULL;
- }
- static int qxl_bo_move(struct ttm_buffer_object *bo,
- bool evict, bool interruptible,
- bool no_wait_gpu,
- struct ttm_mem_reg *new_mem)
- {
- struct ttm_mem_reg *old_mem = &bo->mem;
- if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
- qxl_move_null(bo, new_mem);
- return 0;
- }
- return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
- }
- static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
- struct ttm_mem_reg *new_mem)
- {
- struct qxl_bo *qbo;
- struct qxl_device *qdev;
- if (!qxl_ttm_bo_is_qxl_bo(bo))
- return;
- qbo = container_of(bo, struct qxl_bo, tbo);
- qdev = qbo->gem_base.dev->dev_private;
- if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
- qxl_surface_evict(qdev, qbo, new_mem ? true : false);
- }
- static struct ttm_bo_driver qxl_bo_driver = {
- .ttm_tt_create = &qxl_ttm_tt_create,
- .ttm_tt_populate = &qxl_ttm_tt_populate,
- .ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
- .invalidate_caches = &qxl_invalidate_caches,
- .init_mem_type = &qxl_init_mem_type,
- .evict_flags = &qxl_evict_flags,
- .move = &qxl_bo_move,
- .verify_access = &qxl_verify_access,
- .io_mem_reserve = &qxl_ttm_io_mem_reserve,
- .io_mem_free = &qxl_ttm_io_mem_free,
- .move_notify = &qxl_bo_move_notify,
- };
- int qxl_ttm_init(struct qxl_device *qdev)
- {
- int r;
- int num_io_pages; /* != rom->num_io_pages, we include surface0 */
- r = qxl_ttm_global_init(qdev);
- if (r)
- return r;
- /* No others user of address space so set it to 0 */
- r = ttm_bo_device_init(&qdev->mman.bdev,
- qdev->mman.bo_global_ref.ref.object,
- &qxl_bo_driver,
- qdev->ddev->anon_inode->i_mapping,
- DRM_FILE_PAGE_OFFSET, 0);
- if (r) {
- DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
- return r;
- }
- /* NOTE: this includes the framebuffer (aka surface 0) */
- num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
- r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
- num_io_pages);
- if (r) {
- DRM_ERROR("Failed initializing VRAM heap.\n");
- return r;
- }
- r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
- qdev->surfaceram_size / PAGE_SIZE);
- if (r) {
- DRM_ERROR("Failed initializing Surfaces heap.\n");
- return r;
- }
- DRM_INFO("qxl: %uM of VRAM memory size\n",
- (unsigned)qdev->vram_size / (1024 * 1024));
- DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
- ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
- DRM_INFO("qxl: %uM of Surface memory size\n",
- (unsigned)qdev->surfaceram_size / (1024 * 1024));
- r = qxl_ttm_debugfs_init(qdev);
- if (r) {
- DRM_ERROR("Failed to init debugfs\n");
- return r;
- }
- return 0;
- }
- void qxl_ttm_fini(struct qxl_device *qdev)
- {
- ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
- ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
- ttm_bo_device_release(&qdev->mman.bdev);
- qxl_ttm_global_fini(qdev);
- DRM_INFO("qxl: ttm finalized\n");
- }
- #define QXL_DEBUGFS_MEM_TYPES 2
- #if defined(CONFIG_DEBUG_FS)
- static int qxl_mm_dump_table(struct seq_file *m, void *data)
- {
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
- struct drm_device *dev = node->minor->dev;
- struct qxl_device *rdev = dev->dev_private;
- int ret;
- struct ttm_bo_global *glob = rdev->mman.bdev.glob;
- spin_lock(&glob->lru_lock);
- ret = drm_mm_dump_table(m, mm);
- spin_unlock(&glob->lru_lock);
- return ret;
- }
- #endif
- static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
- {
- #if defined(CONFIG_DEBUG_FS)
- static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
- static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
- unsigned i;
- for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
- if (i == 0)
- sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
- else
- sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
- qxl_mem_types_list[i].name = qxl_mem_types_names[i];
- qxl_mem_types_list[i].show = &qxl_mm_dump_table;
- qxl_mem_types_list[i].driver_features = 0;
- if (i == 0)
- qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
- else
- qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
- }
- return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
- #else
- return 0;
- #endif
- }
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