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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/qxl/qxl_ttm.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_ttm.c')
-rw-r--r-- | drivers/gpu/drm/qxl/qxl_ttm.c | 246 |
1 files changed, 246 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 0000000000..1a82629bce --- /dev/null +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -0,0 +1,246 @@ +/* + * 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.h> +#include <drm/ttm/ttm_placement.h> +#include <drm/ttm/ttm_range_manager.h> +#include <drm/ttm/ttm_tt.h> + +#include "qxl_drv.h" +#include "qxl_object.h" + +static struct qxl_device *qxl_get_qdev(struct ttm_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 = 0 + }; + + 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); + *placement = qbo->placement; +} + +int qxl_ttm_io_mem_reserve(struct ttm_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; + mem->bus.caching = ttm_write_combined; + break; + case TTM_PL_PRIV: + mem->bus.is_iomem = true; + mem->bus.offset = (mem->start << PAGE_SHIFT) + + qdev->surfaceram_base; + mem->bus.caching = ttm_write_combined; + break; + default: + return -EINVAL; + } + return 0; +} + +/* + * TTM backend functions. + */ +static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) +{ + ttm_tt_fini(ttm); + kfree(ttm); +} + +static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, + uint32_t page_flags) +{ + struct ttm_tt *ttm; + + ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); + if (ttm == NULL) + return NULL; + if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) { + kfree(ttm); + return NULL; + } + return ttm; +} + +static void qxl_bo_move_notify(struct ttm_buffer_object *bo, + struct ttm_resource *new_mem) +{ + struct qxl_bo *qbo; + struct qxl_device *qdev; + + if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource) + return; + qbo = to_qxl_bo(bo); + qdev = to_qxl(qbo->tbo.base.dev); + + if (bo->resource->mem_type == TTM_PL_PRIV && qbo->surface_id) + qxl_surface_evict(qdev, qbo, new_mem ? true : false); +} + +static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, + struct ttm_operation_ctx *ctx, + struct ttm_resource *new_mem, + struct ttm_place *hop) +{ + struct ttm_resource *old_mem = bo->resource; + int ret; + + if (!old_mem) { + if (new_mem->mem_type != TTM_PL_SYSTEM) { + hop->mem_type = TTM_PL_SYSTEM; + hop->flags = TTM_PL_FLAG_TEMPORARY; + return -EMULTIHOP; + } + + ttm_bo_move_null(bo, new_mem); + return 0; + } + + qxl_bo_move_notify(bo, new_mem); + + ret = ttm_bo_wait_ctx(bo, ctx); + 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_delete_mem_notify(struct ttm_buffer_object *bo) +{ + qxl_bo_move_notify(bo, NULL); +} + +static struct ttm_device_funcs qxl_bo_driver = { + .ttm_tt_create = &qxl_ttm_tt_create, + .ttm_tt_destroy = &qxl_ttm_backend_destroy, + .eviction_valuable = ttm_bo_eviction_valuable, + .evict_flags = &qxl_evict_flags, + .move = &qxl_bo_move, + .io_mem_reserve = &qxl_ttm_io_mem_reserve, + .delete_mem_notify = &qxl_bo_delete_mem_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_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL, + qdev->ddev.anon_inode->i_mapping, + qdev->ddev.vma_offset_manager, + false, 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_device_fini(&qdev->mman.bdev); + DRM_INFO("qxl: ttm finalized\n"); +} + +void qxl_ttm_debugfs_init(struct qxl_device *qdev) +{ +#if defined(CONFIG_DEBUG_FS) + ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev, + TTM_PL_VRAM), + qdev->ddev.primary->debugfs_root, "qxl_mem_mm"); + ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev, + TTM_PL_PRIV), + qdev->ddev.primary->debugfs_root, "qxl_surf_mm"); +#endif +} |