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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 <linux/delay.h>
- #include <drm/drm.h>
- #include <drm/drm_file.h>
- #include <drm/drm_debugfs.h>
- #include <drm/qxl_drm.h>
- #include <drm/ttm/ttm_bo_api.h>
- #include <drm/ttm/ttm_bo_driver.h>
- #include <drm/ttm/ttm_module.h>
- #include <drm/ttm/ttm_page_alloc.h>
- #include <drm/ttm/ttm_placement.h>
- #include "qxl_drv.h"
- #include "qxl_object.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 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,
- .mem_type = TTM_PL_SYSTEM,
- .flags = TTM_PL_MASK_CACHING
- };
- 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;
- }
- int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
- struct ttm_resource *mem)
- {
- struct qxl_device *qdev = qxl_get_qdev(bdev);
- switch (mem->mem_type) {
- case TTM_PL_SYSTEM:
- /* system memory */
- return 0;
- case TTM_PL_VRAM:
- mem->bus.is_iomem = true;
- mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;
- break;
- case TTM_PL_PRIV:
- mem->bus.is_iomem = true;
- mem->bus.offset = (mem->start << PAGE_SHIFT) +
- qdev->surfaceram_base;
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- /*
- * TTM backend functions.
- */
- struct qxl_ttm_tt {
- struct ttm_tt ttm;
- struct qxl_device *qdev;
- u64 offset;
- };
- static int qxl_ttm_backend_bind(struct ttm_bo_device *bdev,
- struct ttm_tt *ttm,
- struct ttm_resource *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 void qxl_ttm_backend_unbind(struct ttm_bo_device *bdev,
- struct ttm_tt *ttm)
- {
- /* Not implemented */
- }
- static void qxl_ttm_backend_destroy(struct ttm_bo_device *bdev,
- struct ttm_tt *ttm)
- {
- struct qxl_ttm_tt *gtt = (void *)ttm;
- ttm_tt_destroy_common(bdev, ttm);
- ttm_tt_fini(>t->ttm);
- kfree(gtt);
- }
- 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->qdev = qdev;
- if (ttm_tt_init(>t->ttm, bo, page_flags)) {
- kfree(gtt);
- return NULL;
- }
- return >t->ttm;
- }
- static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
- struct ttm_operation_ctx *ctx,
- struct ttm_resource *new_mem)
- {
- struct ttm_resource *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) {
- ttm_bo_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_resource *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 = to_qxl(qbo->tbo.base.dev);
- 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,
- .ttm_tt_bind = &qxl_ttm_backend_bind,
- .ttm_tt_destroy = &qxl_ttm_backend_destroy,
- .ttm_tt_unbind = &qxl_ttm_backend_unbind,
- .eviction_valuable = ttm_bo_eviction_valuable,
- .evict_flags = &qxl_evict_flags,
- .move = &qxl_bo_move,
- .io_mem_reserve = &qxl_ttm_io_mem_reserve,
- .move_notify = &qxl_bo_move_notify,
- };
- static int qxl_ttm_init_mem_type(struct qxl_device *qdev,
- unsigned int type,
- uint64_t size)
- {
- return ttm_range_man_init(&qdev->mman.bdev, type, false, size);
- }
- 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,
- qdev->ddev.vma_offset_manager,
- false);
- 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 = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages);
- if (r) {
- DRM_ERROR("Failed initializing VRAM heap.\n");
- return r;
- }
- r = qxl_ttm_init_mem_type(qdev, 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_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM);
- ttm_range_man_fini(&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 ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data;
- struct drm_printer p = drm_seq_file_printer(m);
- ttm_resource_manager_debug(man, &p);
- return 0;
- }
- #endif
- void 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 = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM);
- else
- qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV);
- }
- qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
- #endif
- }
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