| /* |
| * 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 <drm/ttm/ttm_bo_api.h> |
| #include <drm/ttm/ttm_bo_driver.h> |
| #include <drm/ttm/ttm_placement.h> |
| #include <drm/ttm/ttm_page_alloc.h> |
| #include <drm/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 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 struct vm_operations_struct qxl_ttm_vm_ops; |
| static const struct vm_operations_struct *ttm_vm_ops; |
| |
| static vm_fault_t qxl_ttm_fault(struct vm_fault *vmf) |
| { |
| struct ttm_buffer_object *bo; |
| vm_fault_t ret; |
| |
| bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data; |
| if (bo == NULL) |
| return VM_FAULT_NOPAGE; |
| ret = ttm_vm_ops->fault(vmf); |
| return ret; |
| } |
| |
| 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)) |
| 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; |
| } |
| DRM_DEBUG_DRIVER("filp->private_data = 0x%p, vma->vm_pgoff = %lx\n", |
| 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_PRIV: |
| /* "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 int)type); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static void qxl_evict_flags(struct ttm_buffer_object *bo, |
| struct ttm_placement *placement) |
| { |
| struct qxl_bo *qbo; |
| static const 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 = to_qxl_bo(bo); |
| 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->private_data); |
| } |
| |
| 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_PRIV: |
| 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 struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, |
| uint32_t page_flags) |
| { |
| struct qxl_device *qdev; |
| struct qxl_ttm_tt *gtt; |
| |
| qdev = qxl_get_qdev(bo->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, bo, page_flags)) { |
| 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, |
| struct ttm_operation_ctx *ctx, |
| struct ttm_mem_reg *new_mem) |
| { |
| struct ttm_mem_reg *old_mem = &bo->mem; |
| int ret; |
| |
| ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu); |
| if (ret) |
| return ret; |
| |
| 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, ctx, new_mem); |
| } |
| |
| static void qxl_bo_move_notify(struct ttm_buffer_object *bo, |
| bool evict, |
| struct ttm_mem_reg *new_mem) |
| { |
| struct qxl_bo *qbo; |
| struct qxl_device *qdev; |
| |
| if (!qxl_ttm_bo_is_qxl_bo(bo)) |
| return; |
| qbo = to_qxl_bo(bo); |
| qdev = qbo->gem_base.dev->dev_private; |
| |
| if (bo->mem.mem_type == TTM_PL_PRIV && 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, |
| .invalidate_caches = &qxl_invalidate_caches, |
| .init_mem_type = &qxl_init_mem_type, |
| .eviction_valuable = ttm_bo_eviction_valuable, |
| .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 */ |
| |
| /* No others user of address space so set it to 0 */ |
| r = ttm_bo_device_init(&qdev->mman.bdev, |
| &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_PRIV, |
| 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 int)qdev->vram_size / (1024 * 1024)); |
| DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n", |
| ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); |
| DRM_INFO("qxl: %uM of Surface memory size\n", |
| (unsigned int)qdev->surfaceram_size / (1024 * 1024)); |
| 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_PRIV); |
| ttm_bo_device_release(&qdev->mman.bdev); |
| 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; |
| struct ttm_bo_global *glob = rdev->mman.bdev.glob; |
| struct drm_printer p = drm_seq_file_printer(m); |
| |
| spin_lock(&glob->lru_lock); |
| drm_mm_print(mm, &p); |
| spin_unlock(&glob->lru_lock); |
| return 0; |
| } |
| #endif |
| |
| 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 int 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_PRIV].priv; |
| |
| } |
| return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); |
| #else |
| return 0; |
| #endif |
| } |