![Christian König](/assets/img/avatar_default.png)
The additional housekeeping had too much CPU overhead, let's use the BO priorities instead. agd: also revert hibmc changes Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-and-Tested-by: Roger.He <Hongbo.He@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
536 lines
12 KiB
C
536 lines
12 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include "bochs.h"
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static void bochs_ttm_placement(struct bochs_bo *bo, int domain);
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/* ---------------------------------------------------------------------- */
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static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd)
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{
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return container_of(bd, struct bochs_device, ttm.bdev);
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}
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static int bochs_ttm_mem_global_init(struct drm_global_reference *ref)
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{
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return ttm_mem_global_init(ref->object);
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}
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static void bochs_ttm_mem_global_release(struct drm_global_reference *ref)
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{
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ttm_mem_global_release(ref->object);
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}
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static int bochs_ttm_global_init(struct bochs_device *bochs)
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{
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struct drm_global_reference *global_ref;
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int r;
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global_ref = &bochs->ttm.mem_global_ref;
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global_ref->global_type = DRM_GLOBAL_TTM_MEM;
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global_ref->size = sizeof(struct ttm_mem_global);
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global_ref->init = &bochs_ttm_mem_global_init;
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global_ref->release = &bochs_ttm_mem_global_release;
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r = drm_global_item_ref(global_ref);
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if (r != 0) {
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DRM_ERROR("Failed setting up TTM memory accounting "
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"subsystem.\n");
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return r;
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}
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bochs->ttm.bo_global_ref.mem_glob =
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bochs->ttm.mem_global_ref.object;
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global_ref = &bochs->ttm.bo_global_ref.ref;
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global_ref->global_type = DRM_GLOBAL_TTM_BO;
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global_ref->size = sizeof(struct ttm_bo_global);
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global_ref->init = &ttm_bo_global_init;
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global_ref->release = &ttm_bo_global_release;
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r = drm_global_item_ref(global_ref);
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if (r != 0) {
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DRM_ERROR("Failed setting up TTM BO subsystem.\n");
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drm_global_item_unref(&bochs->ttm.mem_global_ref);
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return r;
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}
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return 0;
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}
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static void bochs_ttm_global_release(struct bochs_device *bochs)
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{
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if (bochs->ttm.mem_global_ref.release == NULL)
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return;
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drm_global_item_unref(&bochs->ttm.bo_global_ref.ref);
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drm_global_item_unref(&bochs->ttm.mem_global_ref);
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bochs->ttm.mem_global_ref.release = NULL;
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}
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static void bochs_bo_ttm_destroy(struct ttm_buffer_object *tbo)
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{
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struct bochs_bo *bo;
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bo = container_of(tbo, struct bochs_bo, bo);
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drm_gem_object_release(&bo->gem);
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kfree(bo);
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}
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static bool bochs_ttm_bo_is_bochs_bo(struct ttm_buffer_object *bo)
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{
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if (bo->destroy == &bochs_bo_ttm_destroy)
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return true;
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return false;
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}
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static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
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struct ttm_mem_type_manager *man)
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{
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switch (type) {
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case TTM_PL_SYSTEM:
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man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_MASK_CACHING;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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case TTM_PL_VRAM:
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man->func = &ttm_bo_manager_func;
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man->flags = TTM_MEMTYPE_FLAG_FIXED |
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TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_FLAG_UNCACHED |
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TTM_PL_FLAG_WC;
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man->default_caching = TTM_PL_FLAG_WC;
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break;
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default:
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DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
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return -EINVAL;
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}
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return 0;
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}
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static void
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bochs_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
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{
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struct bochs_bo *bochsbo = bochs_bo(bo);
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if (!bochs_ttm_bo_is_bochs_bo(bo))
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return;
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bochs_ttm_placement(bochsbo, TTM_PL_FLAG_SYSTEM);
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*pl = bochsbo->placement;
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}
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static int bochs_bo_verify_access(struct ttm_buffer_object *bo,
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struct file *filp)
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{
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struct bochs_bo *bochsbo = bochs_bo(bo);
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return drm_vma_node_verify_access(&bochsbo->gem.vma_node,
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filp->private_data);
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}
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static int bochs_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
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struct ttm_mem_reg *mem)
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{
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struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
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struct bochs_device *bochs = bochs_bdev(bdev);
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mem->bus.addr = NULL;
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mem->bus.offset = 0;
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mem->bus.size = mem->num_pages << PAGE_SHIFT;
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mem->bus.base = 0;
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mem->bus.is_iomem = false;
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if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
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return -EINVAL;
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switch (mem->mem_type) {
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case TTM_PL_SYSTEM:
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/* system memory */
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return 0;
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case TTM_PL_VRAM:
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mem->bus.offset = mem->start << PAGE_SHIFT;
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mem->bus.base = bochs->fb_base;
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mem->bus.is_iomem = true;
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break;
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default:
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return -EINVAL;
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break;
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}
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return 0;
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}
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static void bochs_ttm_io_mem_free(struct ttm_bo_device *bdev,
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struct ttm_mem_reg *mem)
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{
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}
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static void bochs_ttm_backend_destroy(struct ttm_tt *tt)
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{
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ttm_tt_fini(tt);
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kfree(tt);
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}
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static struct ttm_backend_func bochs_tt_backend_func = {
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.destroy = &bochs_ttm_backend_destroy,
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};
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static struct ttm_tt *bochs_ttm_tt_create(struct ttm_bo_device *bdev,
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unsigned long size,
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uint32_t page_flags,
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struct page *dummy_read_page)
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{
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struct ttm_tt *tt;
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tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
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if (tt == NULL)
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return NULL;
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tt->func = &bochs_tt_backend_func;
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if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
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kfree(tt);
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return NULL;
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}
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return tt;
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}
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struct ttm_bo_driver bochs_bo_driver = {
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.ttm_tt_create = bochs_ttm_tt_create,
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.ttm_tt_populate = ttm_pool_populate,
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.ttm_tt_unpopulate = ttm_pool_unpopulate,
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.init_mem_type = bochs_bo_init_mem_type,
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.eviction_valuable = ttm_bo_eviction_valuable,
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.evict_flags = bochs_bo_evict_flags,
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.move = NULL,
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.verify_access = bochs_bo_verify_access,
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.io_mem_reserve = &bochs_ttm_io_mem_reserve,
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.io_mem_free = &bochs_ttm_io_mem_free,
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};
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int bochs_mm_init(struct bochs_device *bochs)
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{
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struct ttm_bo_device *bdev = &bochs->ttm.bdev;
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int ret;
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ret = bochs_ttm_global_init(bochs);
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if (ret)
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return ret;
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ret = ttm_bo_device_init(&bochs->ttm.bdev,
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bochs->ttm.bo_global_ref.ref.object,
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&bochs_bo_driver,
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bochs->dev->anon_inode->i_mapping,
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DRM_FILE_PAGE_OFFSET,
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true);
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if (ret) {
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DRM_ERROR("Error initialising bo driver; %d\n", ret);
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return ret;
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}
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ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
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bochs->fb_size >> PAGE_SHIFT);
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if (ret) {
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DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
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return ret;
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}
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bochs->ttm.initialized = true;
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return 0;
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}
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void bochs_mm_fini(struct bochs_device *bochs)
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{
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if (!bochs->ttm.initialized)
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return;
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ttm_bo_device_release(&bochs->ttm.bdev);
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bochs_ttm_global_release(bochs);
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bochs->ttm.initialized = false;
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}
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static void bochs_ttm_placement(struct bochs_bo *bo, int domain)
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{
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unsigned i;
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u32 c = 0;
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bo->placement.placement = bo->placements;
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bo->placement.busy_placement = bo->placements;
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if (domain & TTM_PL_FLAG_VRAM) {
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bo->placements[c++].flags = TTM_PL_FLAG_WC
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| TTM_PL_FLAG_UNCACHED
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| TTM_PL_FLAG_VRAM;
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}
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if (domain & TTM_PL_FLAG_SYSTEM) {
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bo->placements[c++].flags = TTM_PL_MASK_CACHING
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| TTM_PL_FLAG_SYSTEM;
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}
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if (!c) {
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bo->placements[c++].flags = TTM_PL_MASK_CACHING
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| TTM_PL_FLAG_SYSTEM;
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}
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for (i = 0; i < c; ++i) {
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bo->placements[i].fpfn = 0;
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bo->placements[i].lpfn = 0;
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}
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bo->placement.num_placement = c;
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bo->placement.num_busy_placement = c;
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}
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static inline u64 bochs_bo_gpu_offset(struct bochs_bo *bo)
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{
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return bo->bo.offset;
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}
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int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr)
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{
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int i, ret;
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if (bo->pin_count) {
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bo->pin_count++;
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if (gpu_addr)
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*gpu_addr = bochs_bo_gpu_offset(bo);
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return 0;
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}
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bochs_ttm_placement(bo, pl_flag);
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for (i = 0; i < bo->placement.num_placement; i++)
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bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
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ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
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if (ret)
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return ret;
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bo->pin_count = 1;
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if (gpu_addr)
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*gpu_addr = bochs_bo_gpu_offset(bo);
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return 0;
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}
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int bochs_bo_unpin(struct bochs_bo *bo)
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{
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int i, ret;
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if (!bo->pin_count) {
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DRM_ERROR("unpin bad %p\n", bo);
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return 0;
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}
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bo->pin_count--;
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if (bo->pin_count)
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return 0;
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for (i = 0; i < bo->placement.num_placement; i++)
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bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
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ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
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if (ret)
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return ret;
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return 0;
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}
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int bochs_mmap(struct file *filp, struct vm_area_struct *vma)
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{
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struct drm_file *file_priv;
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struct bochs_device *bochs;
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if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
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return -EINVAL;
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file_priv = filp->private_data;
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bochs = file_priv->minor->dev->dev_private;
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return ttm_bo_mmap(filp, vma, &bochs->ttm.bdev);
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}
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/* ---------------------------------------------------------------------- */
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static int bochs_bo_create(struct drm_device *dev, int size, int align,
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uint32_t flags, struct bochs_bo **pbochsbo)
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{
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struct bochs_device *bochs = dev->dev_private;
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struct bochs_bo *bochsbo;
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size_t acc_size;
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int ret;
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bochsbo = kzalloc(sizeof(struct bochs_bo), GFP_KERNEL);
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if (!bochsbo)
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return -ENOMEM;
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ret = drm_gem_object_init(dev, &bochsbo->gem, size);
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if (ret) {
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kfree(bochsbo);
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return ret;
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}
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bochsbo->bo.bdev = &bochs->ttm.bdev;
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bochsbo->bo.bdev->dev_mapping = dev->anon_inode->i_mapping;
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bochs_ttm_placement(bochsbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
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acc_size = ttm_bo_dma_acc_size(&bochs->ttm.bdev, size,
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sizeof(struct bochs_bo));
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ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size,
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ttm_bo_type_device, &bochsbo->placement,
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align >> PAGE_SHIFT, false, NULL, acc_size,
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NULL, NULL, bochs_bo_ttm_destroy);
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if (ret)
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return ret;
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*pbochsbo = bochsbo;
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return 0;
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}
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int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
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struct drm_gem_object **obj)
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{
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struct bochs_bo *bochsbo;
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int ret;
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*obj = NULL;
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size = PAGE_ALIGN(size);
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if (size == 0)
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return -EINVAL;
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ret = bochs_bo_create(dev, size, 0, 0, &bochsbo);
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if (ret) {
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if (ret != -ERESTARTSYS)
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DRM_ERROR("failed to allocate GEM object\n");
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return ret;
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}
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*obj = &bochsbo->gem;
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return 0;
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}
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int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
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struct drm_mode_create_dumb *args)
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{
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struct drm_gem_object *gobj;
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u32 handle;
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int ret;
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args->pitch = args->width * ((args->bpp + 7) / 8);
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args->size = args->pitch * args->height;
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ret = bochs_gem_create(dev, args->size, false,
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&gobj);
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if (ret)
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return ret;
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ret = drm_gem_handle_create(file, gobj, &handle);
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drm_gem_object_unreference_unlocked(gobj);
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if (ret)
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return ret;
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args->handle = handle;
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return 0;
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}
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static void bochs_bo_unref(struct bochs_bo **bo)
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{
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struct ttm_buffer_object *tbo;
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if ((*bo) == NULL)
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return;
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tbo = &((*bo)->bo);
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ttm_bo_unref(&tbo);
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*bo = NULL;
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}
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void bochs_gem_free_object(struct drm_gem_object *obj)
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{
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struct bochs_bo *bochs_bo = gem_to_bochs_bo(obj);
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bochs_bo_unref(&bochs_bo);
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}
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int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
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uint32_t handle, uint64_t *offset)
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{
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struct drm_gem_object *obj;
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struct bochs_bo *bo;
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obj = drm_gem_object_lookup(file, handle);
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if (obj == NULL)
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return -ENOENT;
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bo = gem_to_bochs_bo(obj);
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*offset = bochs_bo_mmap_offset(bo);
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drm_gem_object_unreference_unlocked(obj);
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return 0;
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}
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/* ---------------------------------------------------------------------- */
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static void bochs_user_framebuffer_destroy(struct drm_framebuffer *fb)
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{
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struct bochs_framebuffer *bochs_fb = to_bochs_framebuffer(fb);
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drm_gem_object_unreference_unlocked(bochs_fb->obj);
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drm_framebuffer_cleanup(fb);
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kfree(fb);
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}
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static const struct drm_framebuffer_funcs bochs_fb_funcs = {
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.destroy = bochs_user_framebuffer_destroy,
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};
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int bochs_framebuffer_init(struct drm_device *dev,
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struct bochs_framebuffer *gfb,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object *obj)
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{
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int ret;
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drm_helper_mode_fill_fb_struct(dev, &gfb->base, mode_cmd);
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gfb->obj = obj;
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ret = drm_framebuffer_init(dev, &gfb->base, &bochs_fb_funcs);
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if (ret) {
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DRM_ERROR("drm_framebuffer_init failed: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static struct drm_framebuffer *
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bochs_user_framebuffer_create(struct drm_device *dev,
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struct drm_file *filp,
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const struct drm_mode_fb_cmd2 *mode_cmd)
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{
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struct drm_gem_object *obj;
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struct bochs_framebuffer *bochs_fb;
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int ret;
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DRM_DEBUG_DRIVER("%dx%d, format %c%c%c%c\n",
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mode_cmd->width, mode_cmd->height,
|
|
(mode_cmd->pixel_format) & 0xff,
|
|
(mode_cmd->pixel_format >> 8) & 0xff,
|
|
(mode_cmd->pixel_format >> 16) & 0xff,
|
|
(mode_cmd->pixel_format >> 24) & 0xff);
|
|
|
|
if (mode_cmd->pixel_format != DRM_FORMAT_XRGB8888)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
|
|
if (obj == NULL)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
bochs_fb = kzalloc(sizeof(*bochs_fb), GFP_KERNEL);
|
|
if (!bochs_fb) {
|
|
drm_gem_object_unreference_unlocked(obj);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
ret = bochs_framebuffer_init(dev, bochs_fb, mode_cmd, obj);
|
|
if (ret) {
|
|
drm_gem_object_unreference_unlocked(obj);
|
|
kfree(bochs_fb);
|
|
return ERR_PTR(ret);
|
|
}
|
|
return &bochs_fb->base;
|
|
}
|
|
|
|
const struct drm_mode_config_funcs bochs_mode_funcs = {
|
|
.fb_create = bochs_user_framebuffer_create,
|
|
};
|