1 /* $NetBSD: nouveau_prime.c,v 1.1.1.2 2014/08/06 12:36:23 riastradh Exp $ */ 2 3 /* 4 * Copyright 2011 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 */ 26 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: nouveau_prime.c,v 1.1.1.2 2014/08/06 12:36:23 riastradh Exp $"); 29 30 #include <drm/drmP.h> 31 32 #include "nouveau_drm.h" 33 #include "nouveau_gem.h" 34 35 struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj) 36 { 37 struct nouveau_bo *nvbo = nouveau_gem_object(obj); 38 int npages = nvbo->bo.num_pages; 39 40 return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages); 41 } 42 43 void *nouveau_gem_prime_vmap(struct drm_gem_object *obj) 44 { 45 struct nouveau_bo *nvbo = nouveau_gem_object(obj); 46 int ret; 47 48 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages, 49 &nvbo->dma_buf_vmap); 50 if (ret) 51 return ERR_PTR(ret); 52 53 return nvbo->dma_buf_vmap.virtual; 54 } 55 56 void nouveau_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) 57 { 58 struct nouveau_bo *nvbo = nouveau_gem_object(obj); 59 60 ttm_bo_kunmap(&nvbo->dma_buf_vmap); 61 } 62 63 struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev, 64 size_t size, 65 struct sg_table *sg) 66 { 67 struct nouveau_bo *nvbo; 68 u32 flags = 0; 69 int ret; 70 71 flags = TTM_PL_FLAG_TT; 72 73 ret = nouveau_bo_new(dev, size, 0, flags, 0, 0, 74 sg, &nvbo); 75 if (ret) 76 return ERR_PTR(ret); 77 78 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART; 79 80 /* Initialize the embedded gem-object. We return a single gem-reference 81 * to the caller, instead of a normal nouveau_bo ttm reference. */ 82 ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size); 83 if (ret) { 84 nouveau_bo_ref(NULL, &nvbo); 85 return ERR_PTR(-ENOMEM); 86 } 87 88 return &nvbo->gem; 89 } 90 91 int nouveau_gem_prime_pin(struct drm_gem_object *obj) 92 { 93 struct nouveau_bo *nvbo = nouveau_gem_object(obj); 94 int ret; 95 96 /* pin buffer into GTT */ 97 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_TT); 98 if (ret) 99 return -EINVAL; 100 101 return 0; 102 } 103 104 void nouveau_gem_prime_unpin(struct drm_gem_object *obj) 105 { 106 struct nouveau_bo *nvbo = nouveau_gem_object(obj); 107 108 nouveau_bo_unpin(nvbo); 109 } 110