| /* |
| * Copyright 2008 Jerome Glisse. |
| * All Rights Reserved. |
| * |
| * 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 (including the next |
| * paragraph) 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 |
| * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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: |
| * Jerome Glisse <glisse@freedesktop.org> |
| */ |
| #include <linux/pagemap.h> |
| #include <drm/drmP.h> |
| #include <drm/amdgpu_drm.h> |
| #include <drm/drm_syncobj.h> |
| #include "amdgpu.h" |
| #include "amdgpu_trace.h" |
| |
| static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p, |
| struct drm_amdgpu_cs_chunk_fence *data, |
| uint32_t *offset) |
| { |
| struct drm_gem_object *gobj; |
| unsigned long size; |
| |
| gobj = drm_gem_object_lookup(p->filp, data->handle); |
| if (gobj == NULL) |
| return -EINVAL; |
| |
| p->uf_entry.robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj)); |
| p->uf_entry.priority = 0; |
| p->uf_entry.tv.bo = &p->uf_entry.robj->tbo; |
| p->uf_entry.tv.shared = true; |
| p->uf_entry.user_pages = NULL; |
| |
| size = amdgpu_bo_size(p->uf_entry.robj); |
| if (size != PAGE_SIZE || (data->offset + 8) > size) |
| return -EINVAL; |
| |
| *offset = data->offset; |
| |
| drm_gem_object_put_unlocked(gobj); |
| |
| if (amdgpu_ttm_tt_get_usermm(p->uf_entry.robj->tbo.ttm)) { |
| amdgpu_bo_unref(&p->uf_entry.robj); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data) |
| { |
| struct amdgpu_fpriv *fpriv = p->filp->driver_priv; |
| struct amdgpu_vm *vm = &fpriv->vm; |
| union drm_amdgpu_cs *cs = data; |
| uint64_t *chunk_array_user; |
| uint64_t *chunk_array; |
| unsigned size, num_ibs = 0; |
| uint32_t uf_offset = 0; |
| int i; |
| int ret; |
| |
| if (cs->in.num_chunks == 0) |
| return 0; |
| |
| chunk_array = kmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL); |
| if (!chunk_array) |
| return -ENOMEM; |
| |
| p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id); |
| if (!p->ctx) { |
| ret = -EINVAL; |
| goto free_chunk; |
| } |
| |
| /* get chunks */ |
| chunk_array_user = u64_to_user_ptr(cs->in.chunks); |
| if (copy_from_user(chunk_array, chunk_array_user, |
| sizeof(uint64_t)*cs->in.num_chunks)) { |
| ret = -EFAULT; |
| goto put_ctx; |
| } |
| |
| p->nchunks = cs->in.num_chunks; |
| p->chunks = kmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk), |
| GFP_KERNEL); |
| if (!p->chunks) { |
| ret = -ENOMEM; |
| goto put_ctx; |
| } |
| |
| for (i = 0; i < p->nchunks; i++) { |
| struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL; |
| struct drm_amdgpu_cs_chunk user_chunk; |
| uint32_t __user *cdata; |
| |
| chunk_ptr = u64_to_user_ptr(chunk_array[i]); |
| if (copy_from_user(&user_chunk, chunk_ptr, |
| sizeof(struct drm_amdgpu_cs_chunk))) { |
| ret = -EFAULT; |
| i--; |
| goto free_partial_kdata; |
| } |
| p->chunks[i].chunk_id = user_chunk.chunk_id; |
| p->chunks[i].length_dw = user_chunk.length_dw; |
| |
| size = p->chunks[i].length_dw; |
| cdata = u64_to_user_ptr(user_chunk.chunk_data); |
| |
| p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL); |
| if (p->chunks[i].kdata == NULL) { |
| ret = -ENOMEM; |
| i--; |
| goto free_partial_kdata; |
| } |
| size *= sizeof(uint32_t); |
| if (copy_from_user(p->chunks[i].kdata, cdata, size)) { |
| ret = -EFAULT; |
| goto free_partial_kdata; |
| } |
| |
| switch (p->chunks[i].chunk_id) { |
| case AMDGPU_CHUNK_ID_IB: |
| ++num_ibs; |
| break; |
| |
| case AMDGPU_CHUNK_ID_FENCE: |
| size = sizeof(struct drm_amdgpu_cs_chunk_fence); |
| if (p->chunks[i].length_dw * sizeof(uint32_t) < size) { |
| ret = -EINVAL; |
| goto free_partial_kdata; |
| } |
| |
| ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata, |
| &uf_offset); |
| if (ret) |
| goto free_partial_kdata; |
| |
| break; |
| |
| case AMDGPU_CHUNK_ID_DEPENDENCIES: |
| case AMDGPU_CHUNK_ID_SYNCOBJ_IN: |
| case AMDGPU_CHUNK_ID_SYNCOBJ_OUT: |
| break; |
| |
| default: |
| ret = -EINVAL; |
| goto free_partial_kdata; |
| } |
| } |
| |
| ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm); |
| if (ret) |
| goto free_all_kdata; |
| |
| if (p->uf_entry.robj) |
| p->job->uf_addr = uf_offset; |
| kfree(chunk_array); |
| return 0; |
| |
| free_all_kdata: |
| i = p->nchunks - 1; |
| free_partial_kdata: |
| for (; i >= 0; i--) |
| kvfree(p->chunks[i].kdata); |
| kfree(p->chunks); |
| p->chunks = NULL; |
| p->nchunks = 0; |
| put_ctx: |
| amdgpu_ctx_put(p->ctx); |
| free_chunk: |
| kfree(chunk_array); |
| |
| return ret; |
| } |
| |
| /* Convert microseconds to bytes. */ |
| static u64 us_to_bytes(struct amdgpu_device *adev, s64 us) |
| { |
| if (us <= 0 || !adev->mm_stats.log2_max_MBps) |
| return 0; |
| |
| /* Since accum_us is incremented by a million per second, just |
| * multiply it by the number of MB/s to get the number of bytes. |
| */ |
| return us << adev->mm_stats.log2_max_MBps; |
| } |
| |
| static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes) |
| { |
| if (!adev->mm_stats.log2_max_MBps) |
| return 0; |
| |
| return bytes >> adev->mm_stats.log2_max_MBps; |
| } |
| |
| /* Returns how many bytes TTM can move right now. If no bytes can be moved, |
| * it returns 0. If it returns non-zero, it's OK to move at least one buffer, |
| * which means it can go over the threshold once. If that happens, the driver |
| * will be in debt and no other buffer migrations can be done until that debt |
| * is repaid. |
| * |
| * This approach allows moving a buffer of any size (it's important to allow |
| * that). |
| * |
| * The currency is simply time in microseconds and it increases as the clock |
| * ticks. The accumulated microseconds (us) are converted to bytes and |
| * returned. |
| */ |
| static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev, |
| u64 *max_bytes, |
| u64 *max_vis_bytes) |
| { |
| s64 time_us, increment_us; |
| u64 free_vram, total_vram, used_vram; |
| |
| /* Allow a maximum of 200 accumulated ms. This is basically per-IB |
| * throttling. |
| * |
| * It means that in order to get full max MBps, at least 5 IBs per |
| * second must be submitted and not more than 200ms apart from each |
| * other. |
| */ |
| const s64 us_upper_bound = 200000; |
| |
| if (!adev->mm_stats.log2_max_MBps) { |
| *max_bytes = 0; |
| *max_vis_bytes = 0; |
| return; |
| } |
| |
| total_vram = adev->mc.real_vram_size - adev->vram_pin_size; |
| used_vram = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]); |
| free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram; |
| |
| spin_lock(&adev->mm_stats.lock); |
| |
| /* Increase the amount of accumulated us. */ |
| time_us = ktime_to_us(ktime_get()); |
| increment_us = time_us - adev->mm_stats.last_update_us; |
| adev->mm_stats.last_update_us = time_us; |
| adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us, |
| us_upper_bound); |
| |
| /* This prevents the short period of low performance when the VRAM |
| * usage is low and the driver is in debt or doesn't have enough |
| * accumulated us to fill VRAM quickly. |
| * |
| * The situation can occur in these cases: |
| * - a lot of VRAM is freed by userspace |
| * - the presence of a big buffer causes a lot of evictions |
| * (solution: split buffers into smaller ones) |
| * |
| * If 128 MB or 1/8th of VRAM is free, start filling it now by setting |
| * accum_us to a positive number. |
| */ |
| if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) { |
| s64 min_us; |
| |
| /* Be more aggresive on dGPUs. Try to fill a portion of free |
| * VRAM now. |
| */ |
| if (!(adev->flags & AMD_IS_APU)) |
| min_us = bytes_to_us(adev, free_vram / 4); |
| else |
| min_us = 0; /* Reset accum_us on APUs. */ |
| |
| adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us); |
| } |
| |
| /* This is set to 0 if the driver is in debt to disallow (optional) |
| * buffer moves. |
| */ |
| *max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us); |
| |
| /* Do the same for visible VRAM if half of it is free */ |
| if (adev->mc.visible_vram_size < adev->mc.real_vram_size) { |
| u64 total_vis_vram = adev->mc.visible_vram_size; |
| u64 used_vis_vram = |
| amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]); |
| |
| if (used_vis_vram < total_vis_vram) { |
| u64 free_vis_vram = total_vis_vram - used_vis_vram; |
| adev->mm_stats.accum_us_vis = min(adev->mm_stats.accum_us_vis + |
| increment_us, us_upper_bound); |
| |
| if (free_vis_vram >= total_vis_vram / 2) |
| adev->mm_stats.accum_us_vis = |
| max(bytes_to_us(adev, free_vis_vram / 2), |
| adev->mm_stats.accum_us_vis); |
| } |
| |
| *max_vis_bytes = us_to_bytes(adev, adev->mm_stats.accum_us_vis); |
| } else { |
| *max_vis_bytes = 0; |
| } |
| |
| spin_unlock(&adev->mm_stats.lock); |
| } |
| |
| /* Report how many bytes have really been moved for the last command |
| * submission. This can result in a debt that can stop buffer migrations |
| * temporarily. |
| */ |
| void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes, |
| u64 num_vis_bytes) |
| { |
| spin_lock(&adev->mm_stats.lock); |
| adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes); |
| adev->mm_stats.accum_us_vis -= bytes_to_us(adev, num_vis_bytes); |
| spin_unlock(&adev->mm_stats.lock); |
| } |
| |
| static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p, |
| struct amdgpu_bo *bo) |
| { |
| struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); |
| u64 initial_bytes_moved, bytes_moved; |
| uint32_t domain; |
| int r; |
| |
| if (bo->pin_count) |
| return 0; |
| |
| /* Don't move this buffer if we have depleted our allowance |
| * to move it. Don't move anything if the threshold is zero. |
| */ |
| if (p->bytes_moved < p->bytes_moved_threshold) { |
| if (adev->mc.visible_vram_size < adev->mc.real_vram_size && |
| (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) { |
| /* And don't move a CPU_ACCESS_REQUIRED BO to limited |
| * visible VRAM if we've depleted our allowance to do |
| * that. |
| */ |
| if (p->bytes_moved_vis < p->bytes_moved_vis_threshold) |
| domain = bo->preferred_domains; |
| else |
| domain = bo->allowed_domains; |
| } else { |
| domain = bo->preferred_domains; |
| } |
| } else { |
| domain = bo->allowed_domains; |
| } |
| |
| retry: |
| amdgpu_ttm_placement_from_domain(bo, domain); |
| initial_bytes_moved = atomic64_read(&adev->num_bytes_moved); |
| r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); |
| bytes_moved = atomic64_read(&adev->num_bytes_moved) - |
| initial_bytes_moved; |
| p->bytes_moved += bytes_moved; |
| if (adev->mc.visible_vram_size < adev->mc.real_vram_size && |
| bo->tbo.mem.mem_type == TTM_PL_VRAM && |
| bo->tbo.mem.start < adev->mc.visible_vram_size >> PAGE_SHIFT) |
| p->bytes_moved_vis += bytes_moved; |
| |
| if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) { |
| domain = bo->allowed_domains; |
| goto retry; |
| } |
| |
| return r; |
| } |
| |
| /* Last resort, try to evict something from the current working set */ |
| static bool amdgpu_cs_try_evict(struct amdgpu_cs_parser *p, |
| struct amdgpu_bo *validated) |
| { |
| uint32_t domain = validated->allowed_domains; |
| int r; |
| |
| if (!p->evictable) |
| return false; |
| |
| for (;&p->evictable->tv.head != &p->validated; |
| p->evictable = list_prev_entry(p->evictable, tv.head)) { |
| |
| struct amdgpu_bo_list_entry *candidate = p->evictable; |
| struct amdgpu_bo *bo = candidate->robj; |
| struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); |
| u64 initial_bytes_moved, bytes_moved; |
| bool update_bytes_moved_vis; |
| uint32_t other; |
| |
| /* If we reached our current BO we can forget it */ |
| if (candidate->robj == validated) |
| break; |
| |
| other = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type); |
| |
| /* Check if this BO is in one of the domains we need space for */ |
| if (!(other & domain)) |
| continue; |
| |
| /* Check if we can move this BO somewhere else */ |
| other = bo->allowed_domains & ~domain; |
| if (!other) |
| continue; |
| |
| /* Good we can try to move this BO somewhere else */ |
| amdgpu_ttm_placement_from_domain(bo, other); |
| update_bytes_moved_vis = |
| adev->mc.visible_vram_size < adev->mc.real_vram_size && |
| bo->tbo.mem.mem_type == TTM_PL_VRAM && |
| bo->tbo.mem.start < adev->mc.visible_vram_size >> PAGE_SHIFT; |
| initial_bytes_moved = atomic64_read(&adev->num_bytes_moved); |
| r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); |
| bytes_moved = atomic64_read(&adev->num_bytes_moved) - |
| initial_bytes_moved; |
| p->bytes_moved += bytes_moved; |
| if (update_bytes_moved_vis) |
| p->bytes_moved_vis += bytes_moved; |
| |
| if (unlikely(r)) |
| break; |
| |
| p->evictable = list_prev_entry(p->evictable, tv.head); |
| list_move(&candidate->tv.head, &p->validated); |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static int amdgpu_cs_validate(void *param, struct amdgpu_bo *bo) |
| { |
| struct amdgpu_cs_parser *p = param; |
| int r; |
| |
| do { |
| r = amdgpu_cs_bo_validate(p, bo); |
| } while (r == -ENOMEM && amdgpu_cs_try_evict(p, bo)); |
| if (r) |
| return r; |
| |
| if (bo->shadow) |
| r = amdgpu_cs_bo_validate(p, bo->shadow); |
| |
| return r; |
| } |
| |
| static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p, |
| struct list_head *validated) |
| { |
| struct amdgpu_bo_list_entry *lobj; |
| int r; |
| |
| list_for_each_entry(lobj, validated, tv.head) { |
| struct amdgpu_bo *bo = lobj->robj; |
| bool binding_userptr = false; |
| struct mm_struct *usermm; |
| |
| usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm); |
| if (usermm && usermm != current->mm) |
| return -EPERM; |
| |
| /* Check if we have user pages and nobody bound the BO already */ |
| if (lobj->user_pages && bo->tbo.ttm->state != tt_bound) { |
| size_t size = sizeof(struct page *); |
| |
| size *= bo->tbo.ttm->num_pages; |
| memcpy(bo->tbo.ttm->pages, lobj->user_pages, size); |
| binding_userptr = true; |
| } |
| |
| if (p->evictable == lobj) |
| p->evictable = NULL; |
| |
| r = amdgpu_cs_validate(p, bo); |
| if (r) |
| return r; |
| |
| if (binding_userptr) { |
| kvfree(lobj->user_pages); |
| lobj->user_pages = NULL; |
| } |
| } |
| return 0; |
| } |
| |
| static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, |
| union drm_amdgpu_cs *cs) |
| { |
| struct amdgpu_fpriv *fpriv = p->filp->driver_priv; |
| struct amdgpu_bo_list_entry *e; |
| struct list_head duplicates; |
| bool need_mmap_lock = false; |
| unsigned i, tries = 10; |
| int r; |
| |
| INIT_LIST_HEAD(&p->validated); |
| |
| p->bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle); |
| if (p->bo_list) { |
| need_mmap_lock = p->bo_list->first_userptr != |
| p->bo_list->num_entries; |
| amdgpu_bo_list_get_list(p->bo_list, &p->validated); |
| } |
| |
| INIT_LIST_HEAD(&duplicates); |
| amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd); |
| |
| if (p->uf_entry.robj) |
| list_add(&p->uf_entry.tv.head, &p->validated); |
| |
| if (need_mmap_lock) |
| down_read(¤t->mm->mmap_sem); |
| |
| while (1) { |
| struct list_head need_pages; |
| unsigned i; |
| |
| r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true, |
| &duplicates); |
| if (unlikely(r != 0)) { |
| if (r != -ERESTARTSYS) |
| DRM_ERROR("ttm_eu_reserve_buffers failed.\n"); |
| goto error_free_pages; |
| } |
| |
| /* Without a BO list we don't have userptr BOs */ |
| if (!p->bo_list) |
| break; |
| |
| INIT_LIST_HEAD(&need_pages); |
| for (i = p->bo_list->first_userptr; |
| i < p->bo_list->num_entries; ++i) { |
| |
| e = &p->bo_list->array[i]; |
| |
| if (amdgpu_ttm_tt_userptr_invalidated(e->robj->tbo.ttm, |
| &e->user_invalidated) && e->user_pages) { |
| |
| /* We acquired a page array, but somebody |
| * invalidated it. Free it and try again |
| */ |
| release_pages(e->user_pages, |
| e->robj->tbo.ttm->num_pages); |
| kvfree(e->user_pages); |
| e->user_pages = NULL; |
| } |
| |
| if (e->robj->tbo.ttm->state != tt_bound && |
| !e->user_pages) { |
| list_del(&e->tv.head); |
| list_add(&e->tv.head, &need_pages); |
| |
| amdgpu_bo_unreserve(e->robj); |
| } |
| } |
| |
| if (list_empty(&need_pages)) |
| break; |
| |
| /* Unreserve everything again. */ |
| ttm_eu_backoff_reservation(&p->ticket, &p->validated); |
| |
| /* We tried too many times, just abort */ |
| if (!--tries) { |
| r = -EDEADLK; |
| DRM_ERROR("deadlock in %s\n", __func__); |
| goto error_free_pages; |
| } |
| |
| /* Fill the page arrays for all userptrs. */ |
| list_for_each_entry(e, &need_pages, tv.head) { |
| struct ttm_tt *ttm = e->robj->tbo.ttm; |
| |
| e->user_pages = kvmalloc_array(ttm->num_pages, |
| sizeof(struct page*), |
| GFP_KERNEL | __GFP_ZERO); |
| if (!e->user_pages) { |
| r = -ENOMEM; |
| DRM_ERROR("calloc failure in %s\n", __func__); |
| goto error_free_pages; |
| } |
| |
| r = amdgpu_ttm_tt_get_user_pages(ttm, e->user_pages); |
| if (r) { |
| DRM_ERROR("amdgpu_ttm_tt_get_user_pages failed.\n"); |
| kvfree(e->user_pages); |
| e->user_pages = NULL; |
| goto error_free_pages; |
| } |
| } |
| |
| /* And try again. */ |
| list_splice(&need_pages, &p->validated); |
| } |
| |
| amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold, |
| &p->bytes_moved_vis_threshold); |
| p->bytes_moved = 0; |
| p->bytes_moved_vis = 0; |
| p->evictable = list_last_entry(&p->validated, |
| struct amdgpu_bo_list_entry, |
| tv.head); |
| |
| r = amdgpu_vm_validate_pt_bos(p->adev, &fpriv->vm, |
| amdgpu_cs_validate, p); |
| if (r) { |
| DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n"); |
| goto error_validate; |
| } |
| |
| r = amdgpu_cs_list_validate(p, &duplicates); |
| if (r) { |
| DRM_ERROR("amdgpu_cs_list_validate(duplicates) failed.\n"); |
| goto error_validate; |
| } |
| |
| r = amdgpu_cs_list_validate(p, &p->validated); |
| if (r) { |
| DRM_ERROR("amdgpu_cs_list_validate(validated) failed.\n"); |
| goto error_validate; |
| } |
| |
| amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved, |
| p->bytes_moved_vis); |
| fpriv->vm.last_eviction_counter = |
| atomic64_read(&p->adev->num_evictions); |
| |
| if (p->bo_list) { |
| struct amdgpu_bo *gds = p->bo_list->gds_obj; |
| struct amdgpu_bo *gws = p->bo_list->gws_obj; |
| struct amdgpu_bo *oa = p->bo_list->oa_obj; |
| struct amdgpu_vm *vm = &fpriv->vm; |
| unsigned i; |
| |
| for (i = 0; i < p->bo_list->num_entries; i++) { |
| struct amdgpu_bo *bo = p->bo_list->array[i].robj; |
| |
| p->bo_list->array[i].bo_va = amdgpu_vm_bo_find(vm, bo); |
| } |
| |
| if (gds) { |
| p->job->gds_base = amdgpu_bo_gpu_offset(gds); |
| p->job->gds_size = amdgpu_bo_size(gds); |
| } |
| if (gws) { |
| p->job->gws_base = amdgpu_bo_gpu_offset(gws); |
| p->job->gws_size = amdgpu_bo_size(gws); |
| } |
| if (oa) { |
| p->job->oa_base = amdgpu_bo_gpu_offset(oa); |
| p->job->oa_size = amdgpu_bo_size(oa); |
| } |
| } |
| |
| if (!r && p->uf_entry.robj) { |
| struct amdgpu_bo *uf = p->uf_entry.robj; |
| |
| r = amdgpu_ttm_bind(&uf->tbo, &uf->tbo.mem); |
| p->job->uf_addr += amdgpu_bo_gpu_offset(uf); |
| } |
| |
| error_validate: |
| if (r) |
| ttm_eu_backoff_reservation(&p->ticket, &p->validated); |
| |
| error_free_pages: |
| |
| if (need_mmap_lock) |
| up_read(¤t->mm->mmap_sem); |
| |
| if (p->bo_list) { |
| for (i = p->bo_list->first_userptr; |
| i < p->bo_list->num_entries; ++i) { |
| e = &p->bo_list->array[i]; |
| |
| if (!e->user_pages) |
| continue; |
| |
| release_pages(e->user_pages, |
| e->robj->tbo.ttm->num_pages); |
| kvfree(e->user_pages); |
| } |
| } |
| |
| return r; |
| } |
| |
| static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p) |
| { |
| struct amdgpu_bo_list_entry *e; |
| int r; |
| |
| list_for_each_entry(e, &p->validated, tv.head) { |
| struct reservation_object *resv = e->robj->tbo.resv; |
| r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, p->filp); |
| |
| if (r) |
| return r; |
| } |
| return 0; |
| } |
| |
| /** |
| * cs_parser_fini() - clean parser states |
| * @parser: parser structure holding parsing context. |
| * @error: error number |
| * |
| * If error is set than unvalidate buffer, otherwise just free memory |
| * used by parsing context. |
| **/ |
| static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, |
| bool backoff) |
| { |
| unsigned i; |
| |
| if (!error) |
| ttm_eu_fence_buffer_objects(&parser->ticket, |
| &parser->validated, |
| parser->fence); |
| else if (backoff) |
| ttm_eu_backoff_reservation(&parser->ticket, |
| &parser->validated); |
| |
| for (i = 0; i < parser->num_post_dep_syncobjs; i++) |
| drm_syncobj_put(parser->post_dep_syncobjs[i]); |
| kfree(parser->post_dep_syncobjs); |
| |
| dma_fence_put(parser->fence); |
| |
| if (parser->ctx) |
| amdgpu_ctx_put(parser->ctx); |
| if (parser->bo_list) |
| amdgpu_bo_list_put(parser->bo_list); |
| |
| for (i = 0; i < parser->nchunks; i++) |
| kvfree(parser->chunks[i].kdata); |
| kfree(parser->chunks); |
| if (parser->job) |
| amdgpu_job_free(parser->job); |
| amdgpu_bo_unref(&parser->uf_entry.robj); |
| } |
| |
| static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p) |
| { |
| struct amdgpu_device *adev = p->adev; |
| struct amdgpu_fpriv *fpriv = p->filp->driver_priv; |
| struct amdgpu_vm *vm = &fpriv->vm; |
| struct amdgpu_bo_va *bo_va; |
| struct amdgpu_bo *bo; |
| int i, r; |
| |
| r = amdgpu_vm_update_directories(adev, vm); |
| if (r) |
| return r; |
| |
| r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_dir_update); |
| if (r) |
| return r; |
| |
| r = amdgpu_vm_clear_freed(adev, vm, NULL); |
| if (r) |
| return r; |
| |
| r = amdgpu_vm_bo_update(adev, fpriv->prt_va, false); |
| if (r) |
| return r; |
| |
| r = amdgpu_sync_fence(adev, &p->job->sync, |
| fpriv->prt_va->last_pt_update); |
| if (r) |
| return r; |
| |
| if (amdgpu_sriov_vf(adev)) { |
| struct dma_fence *f; |
| |
| bo_va = fpriv->csa_va; |
| BUG_ON(!bo_va); |
| r = amdgpu_vm_bo_update(adev, bo_va, false); |
| if (r) |
| return r; |
| |
| f = bo_va->last_pt_update; |
| r = amdgpu_sync_fence(adev, &p->job->sync, f); |
| if (r) |
| return r; |
| } |
| |
| if (p->bo_list) { |
| for (i = 0; i < p->bo_list->num_entries; i++) { |
| struct dma_fence *f; |
| |
| /* ignore duplicates */ |
| bo = p->bo_list->array[i].robj; |
| if (!bo) |
| continue; |
| |
| bo_va = p->bo_list->array[i].bo_va; |
| if (bo_va == NULL) |
| continue; |
| |
| r = amdgpu_vm_bo_update(adev, bo_va, false); |
| if (r) |
| return r; |
| |
| f = bo_va->last_pt_update; |
| r = amdgpu_sync_fence(adev, &p->job->sync, f); |
| if (r) |
| return r; |
| } |
| |
| } |
| |
| r = amdgpu_vm_clear_moved(adev, vm, &p->job->sync); |
| |
| if (amdgpu_vm_debug && p->bo_list) { |
| /* Invalidate all BOs to test for userspace bugs */ |
| for (i = 0; i < p->bo_list->num_entries; i++) { |
| /* ignore duplicates */ |
| bo = p->bo_list->array[i].robj; |
| if (!bo) |
| continue; |
| |
| amdgpu_vm_bo_invalidate(adev, bo); |
| } |
| } |
| |
| return r; |
| } |
| |
| static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev, |
| struct amdgpu_cs_parser *p) |
| { |
| struct amdgpu_fpriv *fpriv = p->filp->driver_priv; |
| struct amdgpu_vm *vm = &fpriv->vm; |
| struct amdgpu_ring *ring = p->job->ring; |
| int i, r; |
| |
| /* Only for UVD/VCE VM emulation */ |
| if (ring->funcs->parse_cs) { |
| for (i = 0; i < p->job->num_ibs; i++) { |
| r = amdgpu_ring_parse_cs(ring, p, i); |
| if (r) |
| return r; |
| } |
| } |
| |
| if (p->job->vm) { |
| p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->root.bo); |
| |
| r = amdgpu_bo_vm_update_pte(p); |
| if (r) |
| return r; |
| } |
| |
| return amdgpu_cs_sync_rings(p); |
| } |
| |
| static int amdgpu_cs_ib_fill(struct amdgpu_device *adev, |
| struct amdgpu_cs_parser *parser) |
| { |
| struct amdgpu_fpriv *fpriv = parser->filp->driver_priv; |
| struct amdgpu_vm *vm = &fpriv->vm; |
| int i, j; |
| int r, ce_preempt = 0, de_preempt = 0; |
| |
| for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) { |
| struct amdgpu_cs_chunk *chunk; |
| struct amdgpu_ib *ib; |
| struct drm_amdgpu_cs_chunk_ib *chunk_ib; |
| struct amdgpu_ring *ring; |
| |
| chunk = &parser->chunks[i]; |
| ib = &parser->job->ibs[j]; |
| chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata; |
| |
| if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB) |
| continue; |
| |
| if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX && amdgpu_sriov_vf(adev)) { |
| if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) { |
| if (chunk_ib->flags & AMDGPU_IB_FLAG_CE) |
| ce_preempt++; |
| else |
| de_preempt++; |
| } |
| |
| /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */ |
| if (ce_preempt > 1 || de_preempt > 1) |
| return -EINVAL; |
| } |
| |
| r = amdgpu_queue_mgr_map(adev, &parser->ctx->queue_mgr, chunk_ib->ip_type, |
| chunk_ib->ip_instance, chunk_ib->ring, &ring); |
| if (r) |
| return r; |
| |
| if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE) { |
| parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT; |
| if (!parser->ctx->preamble_presented) { |
| parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST; |
| parser->ctx->preamble_presented = true; |
| } |
| } |
| |
| if (parser->job->ring && parser->job->ring != ring) |
| return -EINVAL; |
| |
| parser->job->ring = ring; |
| |
| if (ring->funcs->parse_cs) { |
| struct amdgpu_bo_va_mapping *m; |
| struct amdgpu_bo *aobj = NULL; |
| uint64_t offset; |
| uint8_t *kptr; |
| |
| m = amdgpu_cs_find_mapping(parser, chunk_ib->va_start, |
| &aobj); |
| if (!aobj) { |
| DRM_ERROR("IB va_start is invalid\n"); |
| return -EINVAL; |
| } |
| |
| if ((chunk_ib->va_start + chunk_ib->ib_bytes) > |
| (m->last + 1) * AMDGPU_GPU_PAGE_SIZE) { |
| DRM_ERROR("IB va_start+ib_bytes is invalid\n"); |
| return -EINVAL; |
| } |
| |
| /* the IB should be reserved at this point */ |
| r = amdgpu_bo_kmap(aobj, (void **)&kptr); |
| if (r) { |
| return r; |
| } |
| |
| offset = m->start * AMDGPU_GPU_PAGE_SIZE; |
| kptr += chunk_ib->va_start - offset; |
| |
| r = amdgpu_ib_get(adev, vm, chunk_ib->ib_bytes, ib); |
| if (r) { |
| DRM_ERROR("Failed to get ib !\n"); |
| return r; |
| } |
| |
| memcpy(ib->ptr, kptr, chunk_ib->ib_bytes); |
| amdgpu_bo_kunmap(aobj); |
| } else { |
| r = amdgpu_ib_get(adev, vm, 0, ib); |
| if (r) { |
| DRM_ERROR("Failed to get ib !\n"); |
| return r; |
| } |
| |
| } |
| |
| ib->gpu_addr = chunk_ib->va_start; |
| ib->length_dw = chunk_ib->ib_bytes / 4; |
| ib->flags = chunk_ib->flags; |
| j++; |
| } |
| |
| /* UVD & VCE fw doesn't support user fences */ |
| if (parser->job->uf_addr && ( |
| parser->job->ring->funcs->type == AMDGPU_RING_TYPE_UVD || |
| parser->job->ring->funcs->type == AMDGPU_RING_TYPE_VCE)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p, |
| struct amdgpu_cs_chunk *chunk) |
| { |
| struct amdgpu_fpriv *fpriv = p->filp->driver_priv; |
| unsigned num_deps; |
| int i, r; |
| struct drm_amdgpu_cs_chunk_dep *deps; |
| |
| deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata; |
| num_deps = chunk->length_dw * 4 / |
| sizeof(struct drm_amdgpu_cs_chunk_dep); |
| |
| for (i = 0; i < num_deps; ++i) { |
| struct amdgpu_ring *ring; |
| struct amdgpu_ctx *ctx; |
| struct dma_fence *fence; |
| |
| ctx = amdgpu_ctx_get(fpriv, deps[i].ctx_id); |
| if (ctx == NULL) |
| return -EINVAL; |
| |
| r = amdgpu_queue_mgr_map(p->adev, &ctx->queue_mgr, |
| deps[i].ip_type, |
| deps[i].ip_instance, |
| deps[i].ring, &ring); |
| if (r) { |
| amdgpu_ctx_put(ctx); |
| return r; |
| } |
| |
| fence = amdgpu_ctx_get_fence(ctx, ring, |
| deps[i].handle); |
| if (IS_ERR(fence)) { |
| r = PTR_ERR(fence); |
| amdgpu_ctx_put(ctx); |
| return r; |
| } else if (fence) { |
| r = amdgpu_sync_fence(p->adev, &p->job->sync, |
| fence); |
| dma_fence_put(fence); |
| amdgpu_ctx_put(ctx); |
| if (r) |
| return r; |
| } |
| } |
| return 0; |
| } |
| |
| static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p, |
| uint32_t handle) |
| { |
| int r; |
| struct dma_fence *fence; |
| r = drm_syncobj_find_fence(p->filp, handle, &fence); |
| if (r) |
| return r; |
| |
| r = amdgpu_sync_fence(p->adev, &p->job->sync, fence); |
| dma_fence_put(fence); |
| |
| return r; |
| } |
| |
| static int amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser *p, |
| struct amdgpu_cs_chunk *chunk) |
| { |
| unsigned num_deps; |
| int i, r; |
| struct drm_amdgpu_cs_chunk_sem *deps; |
| |
| deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata; |
| num_deps = chunk->length_dw * 4 / |
| sizeof(struct drm_amdgpu_cs_chunk_sem); |
| |
| for (i = 0; i < num_deps; ++i) { |
| r = amdgpu_syncobj_lookup_and_add_to_sync(p, deps[i].handle); |
| if (r) |
| return r; |
| } |
| return 0; |
| } |
| |
| static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p, |
| struct amdgpu_cs_chunk *chunk) |
| { |
| unsigned num_deps; |
| int i; |
| struct drm_amdgpu_cs_chunk_sem *deps; |
| deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata; |
| num_deps = chunk->length_dw * 4 / |
| sizeof(struct drm_amdgpu_cs_chunk_sem); |
| |
| p->post_dep_syncobjs = kmalloc_array(num_deps, |
| sizeof(struct drm_syncobj *), |
| GFP_KERNEL); |
| p->num_post_dep_syncobjs = 0; |
| |
| if (!p->post_dep_syncobjs) |
| return -ENOMEM; |
| |
| for (i = 0; i < num_deps; ++i) { |
| p->post_dep_syncobjs[i] = drm_syncobj_find(p->filp, deps[i].handle); |
| if (!p->post_dep_syncobjs[i]) |
| return -EINVAL; |
| p->num_post_dep_syncobjs++; |
| } |
| return 0; |
| } |
| |
| static int amdgpu_cs_dependencies(struct amdgpu_device *adev, |
| struct amdgpu_cs_parser *p) |
| { |
| int i, r; |
| |
| for (i = 0; i < p->nchunks; ++i) { |
| struct amdgpu_cs_chunk *chunk; |
| |
| chunk = &p->chunks[i]; |
| |
| if (chunk->chunk_id == AMDGPU_CHUNK_ID_DEPENDENCIES) { |
| r = amdgpu_cs_process_fence_dep(p, chunk); |
| if (r) |
| return r; |
| } else if (chunk->chunk_id == AMDGPU_CHUNK_ID_SYNCOBJ_IN) { |
| r = amdgpu_cs_process_syncobj_in_dep(p, chunk); |
| if (r) |
| return r; |
| } else if (chunk->chunk_id == AMDGPU_CHUNK_ID_SYNCOBJ_OUT) { |
| r = amdgpu_cs_process_syncobj_out_dep(p, chunk); |
| if (r) |
| return r; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p) |
| { |
| int i; |
| |
| for (i = 0; i < p->num_post_dep_syncobjs; ++i) |
| drm_syncobj_replace_fence(p->post_dep_syncobjs[i], p->fence); |
| } |
| |
| static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, |
| union drm_amdgpu_cs *cs) |
| { |
| struct amdgpu_ring *ring = p->job->ring; |
| struct amd_sched_entity *entity = &p->ctx->rings[ring->idx].entity; |
| struct amdgpu_job *job; |
| int r; |
| |
| job = p->job; |
| p->job = NULL; |
| |
| r = amd_sched_job_init(&job->base, &ring->sched, entity, p->filp); |
| if (r) { |
| amdgpu_job_free(job); |
| return r; |
| } |
| |
| job->owner = p->filp; |
| job->fence_ctx = entity->fence_context; |
| p->fence = dma_fence_get(&job->base.s_fence->finished); |
| |
| amdgpu_cs_post_dependencies(p); |
| |
| cs->out.handle = amdgpu_ctx_add_fence(p->ctx, ring, p->fence); |
| job->uf_sequence = cs->out.handle; |
| amdgpu_job_free_resources(job); |
| |
| trace_amdgpu_cs_ioctl(job); |
| amd_sched_entity_push_job(&job->base); |
| return 0; |
| } |
| |
| int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) |
| { |
| struct amdgpu_device *adev = dev->dev_private; |
| struct amdgpu_fpriv *fpriv = filp->driver_priv; |
| union drm_amdgpu_cs *cs = data; |
| struct amdgpu_cs_parser parser = {}; |
| bool reserved_buffers = false; |
| int i, r; |
| |
| if (!adev->accel_working) |
| return -EBUSY; |
| if (amdgpu_kms_vram_lost(adev, fpriv)) |
| return -ENODEV; |
| |
| parser.adev = adev; |
| parser.filp = filp; |
| |
| r = amdgpu_cs_parser_init(&parser, data); |
| if (r) { |
| DRM_ERROR("Failed to initialize parser !\n"); |
| goto out; |
| } |
| |
| r = amdgpu_cs_parser_bos(&parser, data); |
| if (r) { |
| if (r == -ENOMEM) |
| DRM_ERROR("Not enough memory for command submission!\n"); |
| else if (r != -ERESTARTSYS) |
| DRM_ERROR("Failed to process the buffer list %d!\n", r); |
| goto out; |
| } |
| |
| reserved_buffers = true; |
| r = amdgpu_cs_ib_fill(adev, &parser); |
| if (r) |
| goto out; |
| |
| r = amdgpu_cs_dependencies(adev, &parser); |
| if (r) { |
| DRM_ERROR("Failed in the dependencies handling %d!\n", r); |
| goto out; |
| } |
| |
| for (i = 0; i < parser.job->num_ibs; i++) |
| trace_amdgpu_cs(&parser, i); |
| |
| r = amdgpu_cs_ib_vm_chunk(adev, &parser); |
| if (r) |
| goto out; |
| |
| r = amdgpu_cs_submit(&parser, cs); |
| |
| out: |
| amdgpu_cs_parser_fini(&parser, r, reserved_buffers); |
| return r; |
| } |
| |
| /** |
| * amdgpu_cs_wait_ioctl - wait for a command submission to finish |
| * |
| * @dev: drm device |
| * @data: data from userspace |
| * @filp: file private |
| * |
| * Wait for the command submission identified by handle to finish. |
| */ |
| int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *filp) |
| { |
| union drm_amdgpu_wait_cs *wait = data; |
| struct amdgpu_device *adev = dev->dev_private; |
| struct amdgpu_fpriv *fpriv = filp->driver_priv; |
| unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout); |
| struct amdgpu_ring *ring = NULL; |
| struct amdgpu_ctx *ctx; |
| struct dma_fence *fence; |
| long r; |
| |
| if (amdgpu_kms_vram_lost(adev, fpriv)) |
| return -ENODEV; |
| |
| ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id); |
| if (ctx == NULL) |
| return -EINVAL; |
| |
| r = amdgpu_queue_mgr_map(adev, &ctx->queue_mgr, |
| wait->in.ip_type, wait->in.ip_instance, |
| wait->in.ring, &ring); |
| if (r) { |
| amdgpu_ctx_put(ctx); |
| return r; |
| } |
| |
| fence = amdgpu_ctx_get_fence(ctx, ring, wait->in.handle); |
| if (IS_ERR(fence)) |
| r = PTR_ERR(fence); |
| else if (fence) { |
| r = dma_fence_wait_timeout(fence, true, timeout); |
| dma_fence_put(fence); |
| } else |
| r = 1; |
| |
| amdgpu_ctx_put(ctx); |
| if (r < 0) |
| return r; |
| |
| memset(wait, 0, sizeof(*wait)); |
| wait->out.status = (r == 0); |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence |
| * |
| * @adev: amdgpu device |
| * @filp: file private |
| * @user: drm_amdgpu_fence copied from user space |
| */ |
| static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev, |
| struct drm_file *filp, |
| struct drm_amdgpu_fence *user) |
| { |
| struct amdgpu_ring *ring; |
| struct amdgpu_ctx *ctx; |
| struct dma_fence *fence; |
| int r; |
| |
| ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id); |
| if (ctx == NULL) |
| return ERR_PTR(-EINVAL); |
| |
| r = amdgpu_queue_mgr_map(adev, &ctx->queue_mgr, user->ip_type, |
| user->ip_instance, user->ring, &ring); |
| if (r) { |
| amdgpu_ctx_put(ctx); |
| return ERR_PTR(r); |
| } |
| |
| fence = amdgpu_ctx_get_fence(ctx, ring, user->seq_no); |
| amdgpu_ctx_put(ctx); |
| |
| return fence; |
| } |
| |
| /** |
| * amdgpu_cs_wait_all_fence - wait on all fences to signal |
| * |
| * @adev: amdgpu device |
| * @filp: file private |
| * @wait: wait parameters |
| * @fences: array of drm_amdgpu_fence |
| */ |
| static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev, |
| struct drm_file *filp, |
| union drm_amdgpu_wait_fences *wait, |
| struct drm_amdgpu_fence *fences) |
| { |
| uint32_t fence_count = wait->in.fence_count; |
| unsigned int i; |
| long r = 1; |
| |
| for (i = 0; i < fence_count; i++) { |
| struct dma_fence *fence; |
| unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns); |
| |
| fence = amdgpu_cs_get_fence(adev, filp, &fences[i]); |
| if (IS_ERR(fence)) |
| return PTR_ERR(fence); |
| else if (!fence) |
| continue; |
| |
| r = dma_fence_wait_timeout(fence, true, timeout); |
| dma_fence_put(fence); |
| if (r < 0) |
| return r; |
| |
| if (r == 0) |
| break; |
| } |
| |
| memset(wait, 0, sizeof(*wait)); |
| wait->out.status = (r > 0); |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_cs_wait_any_fence - wait on any fence to signal |
| * |
| * @adev: amdgpu device |
| * @filp: file private |
| * @wait: wait parameters |
| * @fences: array of drm_amdgpu_fence |
| */ |
| static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev, |
| struct drm_file *filp, |
| union drm_amdgpu_wait_fences *wait, |
| struct drm_amdgpu_fence *fences) |
| { |
| unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns); |
| uint32_t fence_count = wait->in.fence_count; |
| uint32_t first = ~0; |
| struct dma_fence **array; |
| unsigned int i; |
| long r; |
| |
| /* Prepare the fence array */ |
| array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL); |
| |
| if (array == NULL) |
| return -ENOMEM; |
| |
| for (i = 0; i < fence_count; i++) { |
| struct dma_fence *fence; |
| |
| fence = amdgpu_cs_get_fence(adev, filp, &fences[i]); |
| if (IS_ERR(fence)) { |
| r = PTR_ERR(fence); |
| goto err_free_fence_array; |
| } else if (fence) { |
| array[i] = fence; |
| } else { /* NULL, the fence has been already signaled */ |
| r = 1; |
| goto out; |
| } |
| } |
| |
| r = dma_fence_wait_any_timeout(array, fence_count, true, timeout, |
| &first); |
| if (r < 0) |
| goto err_free_fence_array; |
| |
| out: |
| memset(wait, 0, sizeof(*wait)); |
| wait->out.status = (r > 0); |
| wait->out.first_signaled = first; |
| /* set return value 0 to indicate success */ |
| r = 0; |
| |
| err_free_fence_array: |
| for (i = 0; i < fence_count; i++) |
| dma_fence_put(array[i]); |
| kfree(array); |
| |
| return r; |
| } |
| |
| /** |
| * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish |
| * |
| * @dev: drm device |
| * @data: data from userspace |
| * @filp: file private |
| */ |
| int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *filp) |
| { |
| struct amdgpu_device *adev = dev->dev_private; |
| struct amdgpu_fpriv *fpriv = filp->driver_priv; |
| union drm_amdgpu_wait_fences *wait = data; |
| uint32_t fence_count = wait->in.fence_count; |
| struct drm_amdgpu_fence *fences_user; |
| struct drm_amdgpu_fence *fences; |
| int r; |
| |
| if (amdgpu_kms_vram_lost(adev, fpriv)) |
| return -ENODEV; |
| /* Get the fences from userspace */ |
| fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence), |
| GFP_KERNEL); |
| if (fences == NULL) |
| return -ENOMEM; |
| |
| fences_user = u64_to_user_ptr(wait->in.fences); |
| if (copy_from_user(fences, fences_user, |
| sizeof(struct drm_amdgpu_fence) * fence_count)) { |
| r = -EFAULT; |
| goto err_free_fences; |
| } |
| |
| if (wait->in.wait_all) |
| r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences); |
| else |
| r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences); |
| |
| err_free_fences: |
| kfree(fences); |
| |
| return r; |
| } |
| |
| /** |
| * amdgpu_cs_find_bo_va - find bo_va for VM address |
| * |
| * @parser: command submission parser context |
| * @addr: VM address |
| * @bo: resulting BO of the mapping found |
| * |
| * Search the buffer objects in the command submission context for a certain |
| * virtual memory address. Returns allocation structure when found, NULL |
| * otherwise. |
| */ |
| struct amdgpu_bo_va_mapping * |
| amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser, |
| uint64_t addr, struct amdgpu_bo **bo) |
| { |
| struct amdgpu_bo_va_mapping *mapping; |
| unsigned i; |
| |
| if (!parser->bo_list) |
| return NULL; |
| |
| addr /= AMDGPU_GPU_PAGE_SIZE; |
| |
| for (i = 0; i < parser->bo_list->num_entries; i++) { |
| struct amdgpu_bo_list_entry *lobj; |
| |
| lobj = &parser->bo_list->array[i]; |
| if (!lobj->bo_va) |
| continue; |
| |
| list_for_each_entry(mapping, &lobj->bo_va->valids, list) { |
| if (mapping->start > addr || |
| addr > mapping->last) |
| continue; |
| |
| *bo = lobj->bo_va->base.bo; |
| return mapping; |
| } |
| |
| list_for_each_entry(mapping, &lobj->bo_va->invalids, list) { |
| if (mapping->start > addr || |
| addr > mapping->last) |
| continue; |
| |
| *bo = lobj->bo_va->base.bo; |
| return mapping; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| /** |
| * amdgpu_cs_sysvm_access_required - make BOs accessible by the system VM |
| * |
| * @parser: command submission parser context |
| * |
| * Helper for UVD/VCE VM emulation, make sure BOs are accessible by the system VM. |
| */ |
| int amdgpu_cs_sysvm_access_required(struct amdgpu_cs_parser *parser) |
| { |
| unsigned i; |
| int r; |
| |
| if (!parser->bo_list) |
| return 0; |
| |
| for (i = 0; i < parser->bo_list->num_entries; i++) { |
| struct amdgpu_bo *bo = parser->bo_list->array[i].robj; |
| |
| r = amdgpu_ttm_bind(&bo->tbo, &bo->tbo.mem); |
| if (unlikely(r)) |
| return r; |
| |
| if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS) |
| continue; |
| |
| bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS; |
| amdgpu_ttm_placement_from_domain(bo, bo->allowed_domains); |
| r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); |
| if (unlikely(r)) |
| return r; |
| } |
| |
| return 0; |
| } |