/* * Copyright 2016 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Christian König
*/
/** * DOC: mem_info_gtt_total * * The amdgpu driver provides a sysfs API for reporting current total size of * the GTT. * The file mem_info_gtt_total is used for this, and returns the total size of * the GTT block, in bytes
*/ static ssize_t amdgpu_mem_info_gtt_total_show(struct device *dev, struct device_attribute *attr, char *buf)
{ struct drm_device *ddev = dev_get_drvdata(dev); struct amdgpu_device *adev = drm_to_adev(ddev); struct ttm_resource_manager *man;
man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT); return sysfs_emit(buf, "%llu\n", man->size);
}
/** * DOC: mem_info_gtt_used * * The amdgpu driver provides a sysfs API for reporting current total amount of * used GTT. * The file mem_info_gtt_used is used for this, and returns the current used * size of the GTT block, in bytes
*/ static ssize_t amdgpu_mem_info_gtt_used_show(struct device *dev, struct device_attribute *attr, char *buf)
{ struct drm_device *ddev = dev_get_drvdata(dev); struct amdgpu_device *adev = drm_to_adev(ddev); struct ttm_resource_manager *man = &adev->mman.gtt_mgr.manager;
/** * amdgpu_gtt_mgr_has_gart_addr - Check if mem has address space * * @res: the mem object to check * * Check if a mem object has already address space allocated.
*/ bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *res)
{ struct ttm_range_mgr_node *node = to_ttm_range_mgr_node(res);
/** * amdgpu_gtt_mgr_new - allocate a new node * * @man: TTM memory type manager * @tbo: TTM BO we need this range for * @place: placement flags and restrictions * @res: the resulting mem object * * Dummy, allocate the node but no space for it yet.
*/ staticint amdgpu_gtt_mgr_new(struct ttm_resource_manager *man, struct ttm_buffer_object *tbo, conststruct ttm_place *place, struct ttm_resource **res)
{ struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man);
uint32_t num_pages = PFN_UP(tbo->base.size); struct ttm_range_mgr_node *node; int r;
node = kzalloc(struct_size(node, mm_nodes, 1), GFP_KERNEL); if (!node) return -ENOMEM;
ttm_resource_init(tbo, place, &node->base); if (!(place->flags & TTM_PL_FLAG_TEMPORARY) &&
ttm_resource_manager_usage(man) > man->size) {
r = -ENOSPC; goto err_free;
}
if (place->lpfn) {
spin_lock(&mgr->lock);
r = drm_mm_insert_node_in_range(&mgr->mm, &node->mm_nodes[0],
num_pages, tbo->page_alignment,
0, place->fpfn, place->lpfn,
DRM_MM_INSERT_BEST);
spin_unlock(&mgr->lock); if (unlikely(r)) goto err_free;
/** * amdgpu_gtt_mgr_intersects - test for intersection * * @man: Our manager object * @res: The resource to test * @place: The place for the new allocation * @size: The size of the new allocation * * Simplified intersection test, only interesting if we need GART or not.
*/ staticbool amdgpu_gtt_mgr_intersects(struct ttm_resource_manager *man, struct ttm_resource *res, conststruct ttm_place *place,
size_t size)
{ return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res);
}
/** * amdgpu_gtt_mgr_compatible - test for compatibility * * @man: Our manager object * @res: The resource to test * @place: The place for the new allocation * @size: The size of the new allocation * * Simplified compatibility test.
*/ staticbool amdgpu_gtt_mgr_compatible(struct ttm_resource_manager *man, struct ttm_resource *res, conststruct ttm_place *place,
size_t size)
{ return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res);
}
/** * amdgpu_gtt_mgr_debug - dump VRAM table * * @man: TTM memory type manager * @printer: DRM printer to use * * Dump the table content using printk.
*/ staticvoid amdgpu_gtt_mgr_debug(struct ttm_resource_manager *man, struct drm_printer *printer)
{ struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man);
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