114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
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// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#include "xe_sa.h"
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#include <linux/kernel.h>
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#include <drm/drm_managed.h>
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#include "xe_bo.h"
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#include "xe_device.h"
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#include "xe_map.h"
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static void xe_sa_bo_manager_fini(struct drm_device *drm, void *arg)
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{
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struct xe_sa_manager *sa_manager = arg;
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struct xe_bo *bo = sa_manager->bo;
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if (!bo) {
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drm_err(drm, "no bo for sa manager\n");
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return;
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}
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drm_suballoc_manager_fini(&sa_manager->base);
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if (sa_manager->is_iomem)
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kvfree(sa_manager->cpu_ptr);
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sa_manager->bo = NULL;
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}
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struct xe_sa_manager *xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 align)
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{
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struct xe_device *xe = tile_to_xe(tile);
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u32 managed_size = size - SZ_4K;
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struct xe_bo *bo;
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int ret;
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struct xe_sa_manager *sa_manager = drmm_kzalloc(&tile_to_xe(tile)->drm,
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sizeof(*sa_manager),
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GFP_KERNEL);
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if (!sa_manager)
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return ERR_PTR(-ENOMEM);
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sa_manager->bo = NULL;
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bo = xe_managed_bo_create_pin_map(xe, tile, size,
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XE_BO_FLAG_VRAM_IF_DGFX(tile) |
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XE_BO_FLAG_GGTT |
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XE_BO_FLAG_GGTT_INVALIDATE);
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if (IS_ERR(bo)) {
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drm_err(&xe->drm, "failed to allocate bo for sa manager: %ld\n",
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PTR_ERR(bo));
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return ERR_CAST(bo);
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}
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sa_manager->bo = bo;
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sa_manager->is_iomem = bo->vmap.is_iomem;
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drm_suballoc_manager_init(&sa_manager->base, managed_size, align);
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sa_manager->gpu_addr = xe_bo_ggtt_addr(bo);
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if (bo->vmap.is_iomem) {
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sa_manager->cpu_ptr = kvzalloc(managed_size, GFP_KERNEL);
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if (!sa_manager->cpu_ptr) {
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sa_manager->bo = NULL;
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return ERR_PTR(-ENOMEM);
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}
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} else {
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sa_manager->cpu_ptr = bo->vmap.vaddr;
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memset(sa_manager->cpu_ptr, 0, bo->ttm.base.size);
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}
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ret = drmm_add_action_or_reset(&xe->drm, xe_sa_bo_manager_fini,
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sa_manager);
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if (ret)
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return ERR_PTR(ret);
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return sa_manager;
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}
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struct drm_suballoc *xe_sa_bo_new(struct xe_sa_manager *sa_manager,
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unsigned int size)
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{
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/*
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* BB to large, return -ENOBUFS indicating user should split
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* array of binds into smaller chunks.
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*/
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if (size > sa_manager->base.size)
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return ERR_PTR(-ENOBUFS);
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return drm_suballoc_new(&sa_manager->base, size, GFP_KERNEL, true, 0);
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}
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void xe_sa_bo_flush_write(struct drm_suballoc *sa_bo)
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{
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struct xe_sa_manager *sa_manager = to_xe_sa_manager(sa_bo->manager);
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struct xe_device *xe = tile_to_xe(sa_manager->bo->tile);
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if (!sa_manager->bo->vmap.is_iomem)
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return;
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xe_map_memcpy_to(xe, &sa_manager->bo->vmap, drm_suballoc_soffset(sa_bo),
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xe_sa_bo_cpu_addr(sa_bo),
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drm_suballoc_size(sa_bo));
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}
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void xe_sa_bo_free(struct drm_suballoc *sa_bo,
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struct dma_fence *fence)
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{
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drm_suballoc_free(sa_bo, fence);
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}
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