diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_ttm.c | 577 |
1 files changed, 577 insertions, 0 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c new file mode 100644 index 000000000000..aa9fb9afca0b --- /dev/null +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -0,0 +1,577 @@ +/* + * 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; + struct qxl_device *qdev; + int r; + + bo = (struct ttm_buffer_object *)vma->vm_private_data; + if (bo == NULL) + return VM_FAULT_NOPAGE; + qdev = qxl_get_qdev(bo->bdev); + 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 drm_mmap(filp, vma); + } + + 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) +{ + struct qxl_device *qdev; + + qdev = qxl_get_qdev(bdev); + + 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 u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; + + if (!qxl_ttm_bo_is_qxl_bo(bo)) { + placement->fpfn = 0; + placement->lpfn = 0; + 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); + *placement = qbo->placement; +} + +static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp) +{ + return 0; +} + +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); +} + +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 int qxl_sync_obj_wait(void *sync_obj, + bool lazy, bool interruptible) +{ + struct qxl_fence *qfence = (struct qxl_fence *)sync_obj; + int count = 0, sc = 0; + struct qxl_bo *bo = container_of(qfence, struct qxl_bo, fence); + + if (qfence->num_active_releases == 0) + return 0; + +retry: + if (sc == 0) { + if (bo->type == QXL_GEM_DOMAIN_SURFACE) + qxl_update_surface(qfence->qdev, bo); + } else if (sc >= 1) { + qxl_io_notify_oom(qfence->qdev); + } + + sc++; + + for (count = 0; count < 10; count++) { + bool ret; + ret = qxl_queue_garbage_collect(qfence->qdev, true); + if (ret == false) + break; + + if (qfence->num_active_releases == 0) + return 0; + } + + if (qfence->num_active_releases) { + bool have_drawable_releases = false; + void **slot; + struct radix_tree_iter iter; + int release_id; + + radix_tree_for_each_slot(slot, &qfence->tree, &iter, 0) { + struct qxl_release *release; + + release_id = iter.index; + release = qxl_release_from_id_locked(qfence->qdev, release_id); + if (release == NULL) + continue; + + if (release->type == QXL_RELEASE_DRAWABLE) + have_drawable_releases = true; + } + + qxl_queue_garbage_collect(qfence->qdev, true); + + if (have_drawable_releases || sc < 4) { + if (sc > 2) + /* back off */ + usleep_range(500, 1000); + if (have_drawable_releases && sc > 300) { + WARN(1, "sync obj %d still has outstanding releases %d %d %d %ld %d\n", sc, bo->surface_id, bo->is_primary, bo->pin_count, (unsigned long)bo->gem_base.size, qfence->num_active_releases); + return -EBUSY; + } + goto retry; + } + } + return 0; +} + +static int qxl_sync_obj_flush(void *sync_obj) +{ + return 0; +} + +static void qxl_sync_obj_unref(void **sync_obj) +{ +} + +static void *qxl_sync_obj_ref(void *sync_obj) +{ + return sync_obj; +} + +static bool qxl_sync_obj_signaled(void *sync_obj) +{ + struct qxl_fence *qfence = (struct qxl_fence *)sync_obj; + return (qfence->num_active_releases == 0); +} + +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, + .sync_obj_signaled = &qxl_sync_obj_signaled, + .sync_obj_wait = &qxl_sync_obj_wait, + .sync_obj_flush = &qxl_sync_obj_flush, + .sync_obj_unref = &qxl_sync_obj_unref, + .sync_obj_ref = &qxl_sync_obj_ref, + .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, 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)); + if (unlikely(qdev->mman.bdev.dev_mapping == NULL)) + qdev->mman.bdev.dev_mapping = qdev->ddev->dev_mapping; + 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) +{ + 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); +} |