| /* |
| * Copyright 2015 Advanced Micro Devices, Inc. |
| * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS 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. |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| */ |
| /* |
| * Authors: |
| * Christian König <deathsimple@vodafone.de> |
| */ |
| |
| #include <drm/drmP.h> |
| #include "amdgpu.h" |
| #include "amdgpu_trace.h" |
| |
| #define AMDGPU_BO_LIST_MAX_PRIORITY 32u |
| #define AMDGPU_BO_LIST_NUM_BUCKETS (AMDGPU_BO_LIST_MAX_PRIORITY + 1) |
| |
| static int amdgpu_bo_list_create(struct amdgpu_fpriv *fpriv, |
| struct amdgpu_bo_list **result, |
| int *id) |
| { |
| int r; |
| |
| *result = kzalloc(sizeof(struct amdgpu_bo_list), GFP_KERNEL); |
| if (!*result) |
| return -ENOMEM; |
| |
| mutex_lock(&fpriv->bo_list_lock); |
| r = idr_alloc(&fpriv->bo_list_handles, *result, |
| 1, 0, GFP_KERNEL); |
| if (r < 0) { |
| mutex_unlock(&fpriv->bo_list_lock); |
| kfree(*result); |
| return r; |
| } |
| *id = r; |
| |
| mutex_init(&(*result)->lock); |
| (*result)->num_entries = 0; |
| (*result)->array = NULL; |
| |
| mutex_lock(&(*result)->lock); |
| mutex_unlock(&fpriv->bo_list_lock); |
| |
| return 0; |
| } |
| |
| static void amdgpu_bo_list_destroy(struct amdgpu_fpriv *fpriv, int id) |
| { |
| struct amdgpu_bo_list *list; |
| |
| mutex_lock(&fpriv->bo_list_lock); |
| list = idr_find(&fpriv->bo_list_handles, id); |
| if (list) { |
| mutex_lock(&list->lock); |
| idr_remove(&fpriv->bo_list_handles, id); |
| mutex_unlock(&list->lock); |
| amdgpu_bo_list_free(list); |
| } |
| mutex_unlock(&fpriv->bo_list_lock); |
| } |
| |
| static int amdgpu_bo_list_set(struct amdgpu_device *adev, |
| struct drm_file *filp, |
| struct amdgpu_bo_list *list, |
| struct drm_amdgpu_bo_list_entry *info, |
| unsigned num_entries) |
| { |
| struct amdgpu_bo_list_entry *array; |
| struct amdgpu_bo *gds_obj = adev->gds.gds_gfx_bo; |
| struct amdgpu_bo *gws_obj = adev->gds.gws_gfx_bo; |
| struct amdgpu_bo *oa_obj = adev->gds.oa_gfx_bo; |
| |
| bool has_userptr = false; |
| unsigned i; |
| |
| array = drm_malloc_ab(num_entries, sizeof(struct amdgpu_bo_list_entry)); |
| if (!array) |
| return -ENOMEM; |
| memset(array, 0, num_entries * sizeof(struct amdgpu_bo_list_entry)); |
| |
| for (i = 0; i < num_entries; ++i) { |
| struct amdgpu_bo_list_entry *entry = &array[i]; |
| struct drm_gem_object *gobj; |
| |
| gobj = drm_gem_object_lookup(adev->ddev, filp, info[i].bo_handle); |
| if (!gobj) |
| goto error_free; |
| |
| entry->robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj)); |
| drm_gem_object_unreference_unlocked(gobj); |
| entry->priority = min(info[i].bo_priority, |
| AMDGPU_BO_LIST_MAX_PRIORITY); |
| if (amdgpu_ttm_tt_has_userptr(entry->robj->tbo.ttm)) |
| has_userptr = true; |
| entry->tv.bo = &entry->robj->tbo; |
| entry->tv.shared = true; |
| |
| if (entry->robj->prefered_domains == AMDGPU_GEM_DOMAIN_GDS) |
| gds_obj = entry->robj; |
| if (entry->robj->prefered_domains == AMDGPU_GEM_DOMAIN_GWS) |
| gws_obj = entry->robj; |
| if (entry->robj->prefered_domains == AMDGPU_GEM_DOMAIN_OA) |
| oa_obj = entry->robj; |
| |
| trace_amdgpu_bo_list_set(list, entry->robj); |
| } |
| |
| for (i = 0; i < list->num_entries; ++i) |
| amdgpu_bo_unref(&list->array[i].robj); |
| |
| drm_free_large(list->array); |
| |
| list->gds_obj = gds_obj; |
| list->gws_obj = gws_obj; |
| list->oa_obj = oa_obj; |
| list->has_userptr = has_userptr; |
| list->array = array; |
| list->num_entries = num_entries; |
| |
| return 0; |
| |
| error_free: |
| drm_free_large(array); |
| return -ENOENT; |
| } |
| |
| struct amdgpu_bo_list * |
| amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id) |
| { |
| struct amdgpu_bo_list *result; |
| |
| mutex_lock(&fpriv->bo_list_lock); |
| result = idr_find(&fpriv->bo_list_handles, id); |
| if (result) |
| mutex_lock(&result->lock); |
| mutex_unlock(&fpriv->bo_list_lock); |
| return result; |
| } |
| |
| void amdgpu_bo_list_get_list(struct amdgpu_bo_list *list, |
| struct list_head *validated) |
| { |
| /* This is based on the bucket sort with O(n) time complexity. |
| * An item with priority "i" is added to bucket[i]. The lists are then |
| * concatenated in descending order. |
| */ |
| struct list_head bucket[AMDGPU_BO_LIST_NUM_BUCKETS]; |
| unsigned i; |
| |
| for (i = 0; i < AMDGPU_BO_LIST_NUM_BUCKETS; i++) |
| INIT_LIST_HEAD(&bucket[i]); |
| |
| /* Since buffers which appear sooner in the relocation list are |
| * likely to be used more often than buffers which appear later |
| * in the list, the sort mustn't change the ordering of buffers |
| * with the same priority, i.e. it must be stable. |
| */ |
| for (i = 0; i < list->num_entries; i++) { |
| unsigned priority = list->array[i].priority; |
| |
| list_add_tail(&list->array[i].tv.head, |
| &bucket[priority]); |
| } |
| |
| /* Connect the sorted buckets in the output list. */ |
| for (i = 0; i < AMDGPU_BO_LIST_NUM_BUCKETS; i++) |
| list_splice(&bucket[i], validated); |
| } |
| |
| void amdgpu_bo_list_put(struct amdgpu_bo_list *list) |
| { |
| mutex_unlock(&list->lock); |
| } |
| |
| void amdgpu_bo_list_free(struct amdgpu_bo_list *list) |
| { |
| unsigned i; |
| |
| for (i = 0; i < list->num_entries; ++i) |
| amdgpu_bo_unref(&list->array[i].robj); |
| |
| mutex_destroy(&list->lock); |
| drm_free_large(list->array); |
| kfree(list); |
| } |
| |
| int amdgpu_bo_list_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *filp) |
| { |
| const uint32_t info_size = sizeof(struct drm_amdgpu_bo_list_entry); |
| |
| struct amdgpu_device *adev = dev->dev_private; |
| struct amdgpu_fpriv *fpriv = filp->driver_priv; |
| union drm_amdgpu_bo_list *args = data; |
| uint32_t handle = args->in.list_handle; |
| const void __user *uptr = (const void*)(long)args->in.bo_info_ptr; |
| |
| struct drm_amdgpu_bo_list_entry *info; |
| struct amdgpu_bo_list *list; |
| |
| int r; |
| |
| info = drm_malloc_ab(args->in.bo_number, |
| sizeof(struct drm_amdgpu_bo_list_entry)); |
| if (!info) |
| return -ENOMEM; |
| |
| /* copy the handle array from userspace to a kernel buffer */ |
| r = -EFAULT; |
| if (likely(info_size == args->in.bo_info_size)) { |
| unsigned long bytes = args->in.bo_number * |
| args->in.bo_info_size; |
| |
| if (copy_from_user(info, uptr, bytes)) |
| goto error_free; |
| |
| } else { |
| unsigned long bytes = min(args->in.bo_info_size, info_size); |
| unsigned i; |
| |
| memset(info, 0, args->in.bo_number * info_size); |
| for (i = 0; i < args->in.bo_number; ++i) { |
| if (copy_from_user(&info[i], uptr, bytes)) |
| goto error_free; |
| |
| uptr += args->in.bo_info_size; |
| } |
| } |
| |
| switch (args->in.operation) { |
| case AMDGPU_BO_LIST_OP_CREATE: |
| r = amdgpu_bo_list_create(fpriv, &list, &handle); |
| if (r) |
| goto error_free; |
| |
| r = amdgpu_bo_list_set(adev, filp, list, info, |
| args->in.bo_number); |
| amdgpu_bo_list_put(list); |
| if (r) |
| goto error_free; |
| |
| break; |
| |
| case AMDGPU_BO_LIST_OP_DESTROY: |
| amdgpu_bo_list_destroy(fpriv, handle); |
| handle = 0; |
| break; |
| |
| case AMDGPU_BO_LIST_OP_UPDATE: |
| r = -ENOENT; |
| list = amdgpu_bo_list_get(fpriv, handle); |
| if (!list) |
| goto error_free; |
| |
| r = amdgpu_bo_list_set(adev, filp, list, info, |
| args->in.bo_number); |
| amdgpu_bo_list_put(list); |
| if (r) |
| goto error_free; |
| |
| break; |
| |
| default: |
| r = -EINVAL; |
| goto error_free; |
| } |
| |
| memset(args, 0, sizeof(*args)); |
| args->out.list_handle = handle; |
| drm_free_large(info); |
| |
| return 0; |
| |
| error_free: |
| drm_free_large(info); |
| return r; |
| } |