Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 1 | /* exynos_drm_gem.c |
| 2 | * |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| 4 | * Author: Inki Dae <inki.dae@samsung.com> |
| 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 (including the next |
| 14 | * paragraph) shall be included in all copies or substantial portions of the |
| 15 | * Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 23 | * OTHER DEALINGS IN THE SOFTWARE. |
| 24 | */ |
| 25 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 26 | #include <drm/drmP.h> |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 27 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 28 | #include <linux/shmem_fs.h> |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 29 | #include <drm/exynos_drm.h> |
| 30 | |
| 31 | #include "exynos_drm_drv.h" |
| 32 | #include "exynos_drm_gem.h" |
| 33 | #include "exynos_drm_buf.h" |
| 34 | |
| 35 | static unsigned int convert_to_vm_err_msg(int msg) |
| 36 | { |
| 37 | unsigned int out_msg; |
| 38 | |
| 39 | switch (msg) { |
| 40 | case 0: |
| 41 | case -ERESTARTSYS: |
| 42 | case -EINTR: |
| 43 | out_msg = VM_FAULT_NOPAGE; |
| 44 | break; |
| 45 | |
| 46 | case -ENOMEM: |
| 47 | out_msg = VM_FAULT_OOM; |
| 48 | break; |
| 49 | |
| 50 | default: |
| 51 | out_msg = VM_FAULT_SIGBUS; |
| 52 | break; |
| 53 | } |
| 54 | |
| 55 | return out_msg; |
| 56 | } |
| 57 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 58 | static int check_gem_flags(unsigned int flags) |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 59 | { |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 60 | if (flags & ~(EXYNOS_BO_MASK)) { |
| 61 | DRM_ERROR("invalid flags.\n"); |
| 62 | return -EINVAL; |
| 63 | } |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 68 | static void update_vm_cache_attr(struct exynos_drm_gem_obj *obj, |
| 69 | struct vm_area_struct *vma) |
| 70 | { |
| 71 | DRM_DEBUG_KMS("flags = 0x%x\n", obj->flags); |
| 72 | |
| 73 | /* non-cachable as default. */ |
| 74 | if (obj->flags & EXYNOS_BO_CACHABLE) |
| 75 | vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); |
| 76 | else if (obj->flags & EXYNOS_BO_WC) |
| 77 | vma->vm_page_prot = |
| 78 | pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); |
| 79 | else |
| 80 | vma->vm_page_prot = |
| 81 | pgprot_noncached(vm_get_page_prot(vma->vm_flags)); |
| 82 | } |
| 83 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 84 | static unsigned long roundup_gem_size(unsigned long size, unsigned int flags) |
| 85 | { |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 86 | /* TODO */ |
| 87 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 88 | return roundup(size, PAGE_SIZE); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 89 | } |
| 90 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 91 | static int exynos_drm_gem_map_buf(struct drm_gem_object *obj, |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 92 | struct vm_area_struct *vma, |
| 93 | unsigned long f_vaddr, |
| 94 | pgoff_t page_offset) |
| 95 | { |
| 96 | struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); |
| 97 | struct exynos_drm_gem_buf *buf = exynos_gem_obj->buffer; |
Rahul Sharma | 4ddc404 | 2012-11-05 21:04:29 +0530 | [diff] [blame] | 98 | struct scatterlist *sgl; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 99 | unsigned long pfn; |
Rahul Sharma | 4ddc404 | 2012-11-05 21:04:29 +0530 | [diff] [blame] | 100 | int i; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 101 | |
Prathyush K | 465ed66 | 2012-11-20 19:32:56 +0900 | [diff] [blame^] | 102 | if (!buf->sgt) |
| 103 | return -EINTR; |
Rahul Sharma | 4ddc404 | 2012-11-05 21:04:29 +0530 | [diff] [blame] | 104 | |
Prathyush K | 465ed66 | 2012-11-20 19:32:56 +0900 | [diff] [blame^] | 105 | if (page_offset >= (buf->size >> PAGE_SHIFT)) { |
| 106 | DRM_ERROR("invalid page offset\n"); |
| 107 | return -EINVAL; |
Rahul Sharma | 4ddc404 | 2012-11-05 21:04:29 +0530 | [diff] [blame] | 108 | } |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 109 | |
Prathyush K | 465ed66 | 2012-11-20 19:32:56 +0900 | [diff] [blame^] | 110 | sgl = buf->sgt->sgl; |
| 111 | for_each_sg(buf->sgt->sgl, sgl, buf->sgt->nents, i) { |
| 112 | if (page_offset < (sgl->length >> PAGE_SHIFT)) |
| 113 | break; |
| 114 | page_offset -= (sgl->length >> PAGE_SHIFT); |
| 115 | } |
| 116 | |
| 117 | pfn = __phys_to_pfn(sg_phys(sgl)) + page_offset; |
| 118 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 119 | return vm_insert_mixed(vma, f_vaddr, pfn); |
| 120 | } |
| 121 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 122 | static int exynos_drm_gem_handle_create(struct drm_gem_object *obj, |
| 123 | struct drm_file *file_priv, |
| 124 | unsigned int *handle) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 125 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 126 | int ret; |
| 127 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 128 | /* |
| 129 | * allocate a id of idr table where the obj is registered |
| 130 | * and handle has the id what user can see. |
| 131 | */ |
| 132 | ret = drm_gem_handle_create(file_priv, obj, handle); |
| 133 | if (ret) |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 134 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 135 | |
| 136 | DRM_DEBUG_KMS("gem handle = 0x%x\n", *handle); |
| 137 | |
| 138 | /* drop reference from allocate - handle holds it now. */ |
| 139 | drm_gem_object_unreference_unlocked(obj); |
| 140 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 141 | return 0; |
| 142 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 143 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 144 | void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj) |
| 145 | { |
| 146 | struct drm_gem_object *obj; |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 147 | struct exynos_drm_gem_buf *buf; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 148 | |
| 149 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 150 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 151 | obj = &exynos_gem_obj->base; |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 152 | buf = exynos_gem_obj->buffer; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 153 | |
| 154 | DRM_DEBUG_KMS("handle count = %d\n", atomic_read(&obj->handle_count)); |
| 155 | |
Inki Dae | c374e73 | 2012-06-12 16:52:54 +0900 | [diff] [blame] | 156 | /* |
| 157 | * do not release memory region from exporter. |
| 158 | * |
| 159 | * the region will be released by exporter |
| 160 | * once dmabuf's refcount becomes 0. |
| 161 | */ |
| 162 | if (obj->import_attach) |
| 163 | goto out; |
| 164 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 165 | exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags, buf); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 166 | |
Inki Dae | c374e73 | 2012-06-12 16:52:54 +0900 | [diff] [blame] | 167 | out: |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 168 | exynos_drm_fini_buf(obj->dev, buf); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 169 | exynos_gem_obj->buffer = NULL; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 170 | |
| 171 | if (obj->map_list.map) |
| 172 | drm_gem_free_mmap_offset(obj); |
| 173 | |
| 174 | /* release file pointer to gem object. */ |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 175 | drm_gem_object_release(obj); |
| 176 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 177 | kfree(exynos_gem_obj); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 178 | exynos_gem_obj = NULL; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 179 | } |
| 180 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 181 | struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev, |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 182 | unsigned long size) |
| 183 | { |
| 184 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 185 | struct drm_gem_object *obj; |
| 186 | int ret; |
| 187 | |
| 188 | exynos_gem_obj = kzalloc(sizeof(*exynos_gem_obj), GFP_KERNEL); |
| 189 | if (!exynos_gem_obj) { |
| 190 | DRM_ERROR("failed to allocate exynos gem object\n"); |
| 191 | return NULL; |
| 192 | } |
| 193 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 194 | exynos_gem_obj->size = size; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 195 | obj = &exynos_gem_obj->base; |
| 196 | |
| 197 | ret = drm_gem_object_init(dev, obj, size); |
| 198 | if (ret < 0) { |
| 199 | DRM_ERROR("failed to initialize gem object\n"); |
| 200 | kfree(exynos_gem_obj); |
| 201 | return NULL; |
| 202 | } |
| 203 | |
| 204 | DRM_DEBUG_KMS("created file object = 0x%x\n", (unsigned int)obj->filp); |
| 205 | |
| 206 | return exynos_gem_obj; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 207 | } |
| 208 | |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 209 | struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev, |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 210 | unsigned int flags, |
| 211 | unsigned long size) |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 212 | { |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 213 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 214 | struct exynos_drm_gem_buf *buf; |
| 215 | int ret; |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 216 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 217 | if (!size) { |
| 218 | DRM_ERROR("invalid size.\n"); |
| 219 | return ERR_PTR(-EINVAL); |
| 220 | } |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 221 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 222 | size = roundup_gem_size(size, flags); |
| 223 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 224 | |
| 225 | ret = check_gem_flags(flags); |
| 226 | if (ret) |
| 227 | return ERR_PTR(ret); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 228 | |
| 229 | buf = exynos_drm_init_buf(dev, size); |
| 230 | if (!buf) |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 231 | return ERR_PTR(-ENOMEM); |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 232 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 233 | exynos_gem_obj = exynos_drm_gem_init(dev, size); |
| 234 | if (!exynos_gem_obj) { |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 235 | ret = -ENOMEM; |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 236 | goto err_fini_buf; |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 237 | } |
| 238 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 239 | exynos_gem_obj->buffer = buf; |
| 240 | |
| 241 | /* set memory type and cache attribute from user side. */ |
| 242 | exynos_gem_obj->flags = flags; |
| 243 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 244 | ret = exynos_drm_alloc_buf(dev, buf, flags); |
| 245 | if (ret < 0) { |
| 246 | drm_gem_object_release(&exynos_gem_obj->base); |
| 247 | goto err_fini_buf; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 248 | } |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 249 | |
| 250 | return exynos_gem_obj; |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 251 | |
| 252 | err_fini_buf: |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 253 | exynos_drm_fini_buf(dev, buf); |
| 254 | return ERR_PTR(ret); |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 255 | } |
| 256 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 257 | int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 258 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 259 | { |
| 260 | struct drm_exynos_gem_create *args = data; |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 261 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 262 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 263 | |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 264 | DRM_DEBUG_KMS("%s\n", __FILE__); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 265 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 266 | exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 267 | if (IS_ERR(exynos_gem_obj)) |
| 268 | return PTR_ERR(exynos_gem_obj); |
| 269 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 270 | ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, |
| 271 | &args->handle); |
| 272 | if (ret) { |
| 273 | exynos_drm_gem_destroy(exynos_gem_obj); |
| 274 | return ret; |
| 275 | } |
| 276 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 277 | return 0; |
| 278 | } |
| 279 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 280 | dma_addr_t *exynos_drm_gem_get_dma_addr(struct drm_device *dev, |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 281 | unsigned int gem_handle, |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 282 | struct drm_file *filp) |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 283 | { |
| 284 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 285 | struct drm_gem_object *obj; |
| 286 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 287 | obj = drm_gem_object_lookup(dev, filp, gem_handle); |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 288 | if (!obj) { |
| 289 | DRM_ERROR("failed to lookup gem object.\n"); |
| 290 | return ERR_PTR(-EINVAL); |
| 291 | } |
| 292 | |
| 293 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 294 | |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 295 | return &exynos_gem_obj->buffer->dma_addr; |
| 296 | } |
| 297 | |
| 298 | void exynos_drm_gem_put_dma_addr(struct drm_device *dev, |
| 299 | unsigned int gem_handle, |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 300 | struct drm_file *filp) |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 301 | { |
| 302 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 303 | struct drm_gem_object *obj; |
| 304 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 305 | obj = drm_gem_object_lookup(dev, filp, gem_handle); |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 306 | if (!obj) { |
| 307 | DRM_ERROR("failed to lookup gem object.\n"); |
| 308 | return; |
| 309 | } |
| 310 | |
| 311 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 312 | |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 313 | drm_gem_object_unreference_unlocked(obj); |
| 314 | |
| 315 | /* |
| 316 | * decrease obj->refcount one more time because we has already |
| 317 | * increased it at exynos_drm_gem_get_dma_addr(). |
| 318 | */ |
| 319 | drm_gem_object_unreference_unlocked(obj); |
| 320 | } |
| 321 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 322 | int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 323 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 324 | { |
| 325 | struct drm_exynos_gem_map_off *args = data; |
| 326 | |
| 327 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 328 | |
| 329 | DRM_DEBUG_KMS("handle = 0x%x, offset = 0x%lx\n", |
| 330 | args->handle, (unsigned long)args->offset); |
| 331 | |
| 332 | if (!(dev->driver->driver_features & DRIVER_GEM)) { |
| 333 | DRM_ERROR("does not support GEM.\n"); |
| 334 | return -ENODEV; |
| 335 | } |
| 336 | |
| 337 | return exynos_drm_gem_dumb_map_offset(file_priv, dev, args->handle, |
| 338 | &args->offset); |
| 339 | } |
| 340 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 341 | static struct drm_file *exynos_drm_find_drm_file(struct drm_device *drm_dev, |
| 342 | struct file *filp) |
| 343 | { |
| 344 | struct drm_file *file_priv; |
| 345 | |
| 346 | mutex_lock(&drm_dev->struct_mutex); |
| 347 | |
| 348 | /* find current process's drm_file from filelist. */ |
| 349 | list_for_each_entry(file_priv, &drm_dev->filelist, lhead) { |
| 350 | if (file_priv->filp == filp) { |
| 351 | mutex_unlock(&drm_dev->struct_mutex); |
| 352 | return file_priv; |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | mutex_unlock(&drm_dev->struct_mutex); |
| 357 | WARN_ON(1); |
| 358 | |
| 359 | return ERR_PTR(-EFAULT); |
| 360 | } |
| 361 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 362 | static int exynos_drm_gem_mmap_buffer(struct file *filp, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 363 | struct vm_area_struct *vma) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 364 | { |
| 365 | struct drm_gem_object *obj = filp->private_data; |
| 366 | struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 367 | struct drm_device *drm_dev = obj->dev; |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 368 | struct exynos_drm_gem_buf *buffer; |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 369 | struct drm_file *file_priv; |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 370 | unsigned long vm_size; |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 371 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 372 | |
| 373 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 374 | |
Konstantin Khlebnikov | 314e51b | 2012-10-08 16:29:02 -0700 | [diff] [blame] | 375 | vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 376 | vma->vm_private_data = obj; |
| 377 | vma->vm_ops = drm_dev->driver->gem_vm_ops; |
| 378 | |
| 379 | /* restore it to driver's fops. */ |
| 380 | filp->f_op = fops_get(drm_dev->driver->fops); |
| 381 | |
| 382 | file_priv = exynos_drm_find_drm_file(drm_dev, filp); |
| 383 | if (IS_ERR(file_priv)) |
| 384 | return PTR_ERR(file_priv); |
| 385 | |
| 386 | /* restore it to drm_file. */ |
| 387 | filp->private_data = file_priv; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 388 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 389 | update_vm_cache_attr(exynos_gem_obj, vma); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 390 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 391 | vm_size = vma->vm_end - vma->vm_start; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 392 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 393 | /* |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 394 | * a buffer contains information to physically continuous memory |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 395 | * allocated by user request or at framebuffer creation. |
| 396 | */ |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 397 | buffer = exynos_gem_obj->buffer; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 398 | |
| 399 | /* check if user-requested size is valid. */ |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 400 | if (vm_size > buffer->size) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 401 | return -EINVAL; |
| 402 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 403 | ret = dma_mmap_attrs(drm_dev->dev, vma, buffer->kvaddr, |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 404 | buffer->dma_addr, buffer->size, |
| 405 | &buffer->dma_attrs); |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 406 | if (ret < 0) { |
| 407 | DRM_ERROR("failed to mmap.\n"); |
| 408 | return ret; |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * take a reference to this mapping of the object. And this reference |
| 413 | * is unreferenced by the corresponding vm_close call. |
| 414 | */ |
| 415 | drm_gem_object_reference(obj); |
| 416 | |
| 417 | mutex_lock(&drm_dev->struct_mutex); |
| 418 | drm_vm_open_locked(drm_dev, vma); |
| 419 | mutex_unlock(&drm_dev->struct_mutex); |
| 420 | |
| 421 | return 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | static const struct file_operations exynos_drm_gem_fops = { |
| 425 | .mmap = exynos_drm_gem_mmap_buffer, |
| 426 | }; |
| 427 | |
| 428 | int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 429 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 430 | { |
| 431 | struct drm_exynos_gem_mmap *args = data; |
| 432 | struct drm_gem_object *obj; |
| 433 | unsigned int addr; |
| 434 | |
| 435 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 436 | |
| 437 | if (!(dev->driver->driver_features & DRIVER_GEM)) { |
| 438 | DRM_ERROR("does not support GEM.\n"); |
| 439 | return -ENODEV; |
| 440 | } |
| 441 | |
| 442 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 443 | if (!obj) { |
| 444 | DRM_ERROR("failed to lookup gem object.\n"); |
| 445 | return -EINVAL; |
| 446 | } |
| 447 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 448 | /* |
| 449 | * Set specific mmper's fops. And it will be restored by |
| 450 | * exynos_drm_gem_mmap_buffer to dev->driver->fops. |
| 451 | * This is used to call specific mapper temporarily. |
| 452 | */ |
| 453 | file_priv->filp->f_op = &exynos_drm_gem_fops; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 454 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 455 | /* |
| 456 | * Set gem object to private_data so that specific mmaper |
| 457 | * can get the gem object. And it will be restored by |
| 458 | * exynos_drm_gem_mmap_buffer to drm_file. |
| 459 | */ |
| 460 | file_priv->filp->private_data = obj; |
| 461 | |
| 462 | addr = vm_mmap(file_priv->filp, 0, args->size, |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 463 | PROT_READ | PROT_WRITE, MAP_SHARED, 0); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 464 | |
| 465 | drm_gem_object_unreference_unlocked(obj); |
| 466 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 467 | if (IS_ERR((void *)addr)) { |
| 468 | file_priv->filp->private_data = file_priv; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 469 | return PTR_ERR((void *)addr); |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame] | 470 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 471 | |
| 472 | args->mapped = addr; |
| 473 | |
| 474 | DRM_DEBUG_KMS("mapped = 0x%lx\n", (unsigned long)args->mapped); |
| 475 | |
| 476 | return 0; |
| 477 | } |
| 478 | |
Inki Dae | 40cd7e0 | 2012-05-04 15:51:17 +0900 | [diff] [blame] | 479 | int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, |
| 480 | struct drm_file *file_priv) |
| 481 | { struct exynos_drm_gem_obj *exynos_gem_obj; |
| 482 | struct drm_exynos_gem_info *args = data; |
| 483 | struct drm_gem_object *obj; |
| 484 | |
| 485 | mutex_lock(&dev->struct_mutex); |
| 486 | |
| 487 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 488 | if (!obj) { |
| 489 | DRM_ERROR("failed to lookup gem object.\n"); |
| 490 | mutex_unlock(&dev->struct_mutex); |
| 491 | return -EINVAL; |
| 492 | } |
| 493 | |
| 494 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 495 | |
| 496 | args->flags = exynos_gem_obj->flags; |
| 497 | args->size = exynos_gem_obj->size; |
| 498 | |
| 499 | drm_gem_object_unreference(obj); |
| 500 | mutex_unlock(&dev->struct_mutex); |
| 501 | |
| 502 | return 0; |
| 503 | } |
| 504 | |
Inki Dae | 2a3098f | 2012-11-04 05:48:52 -0800 | [diff] [blame] | 505 | struct vm_area_struct *exynos_gem_get_vma(struct vm_area_struct *vma) |
| 506 | { |
| 507 | struct vm_area_struct *vma_copy; |
| 508 | |
| 509 | vma_copy = kmalloc(sizeof(*vma_copy), GFP_KERNEL); |
| 510 | if (!vma_copy) |
| 511 | return NULL; |
| 512 | |
| 513 | if (vma->vm_ops && vma->vm_ops->open) |
| 514 | vma->vm_ops->open(vma); |
| 515 | |
| 516 | if (vma->vm_file) |
| 517 | get_file(vma->vm_file); |
| 518 | |
| 519 | memcpy(vma_copy, vma, sizeof(*vma)); |
| 520 | |
| 521 | vma_copy->vm_mm = NULL; |
| 522 | vma_copy->vm_next = NULL; |
| 523 | vma_copy->vm_prev = NULL; |
| 524 | |
| 525 | return vma_copy; |
| 526 | } |
| 527 | |
| 528 | void exynos_gem_put_vma(struct vm_area_struct *vma) |
| 529 | { |
| 530 | if (!vma) |
| 531 | return; |
| 532 | |
| 533 | if (vma->vm_ops && vma->vm_ops->close) |
| 534 | vma->vm_ops->close(vma); |
| 535 | |
| 536 | if (vma->vm_file) |
| 537 | fput(vma->vm_file); |
| 538 | |
| 539 | kfree(vma); |
| 540 | } |
| 541 | |
| 542 | int exynos_gem_get_pages_from_userptr(unsigned long start, |
| 543 | unsigned int npages, |
| 544 | struct page **pages, |
| 545 | struct vm_area_struct *vma) |
| 546 | { |
| 547 | int get_npages; |
| 548 | |
| 549 | /* the memory region mmaped with VM_PFNMAP. */ |
| 550 | if (vma_is_io(vma)) { |
| 551 | unsigned int i; |
| 552 | |
| 553 | for (i = 0; i < npages; ++i, start += PAGE_SIZE) { |
| 554 | unsigned long pfn; |
| 555 | int ret = follow_pfn(vma, start, &pfn); |
| 556 | if (ret) |
| 557 | return ret; |
| 558 | |
| 559 | pages[i] = pfn_to_page(pfn); |
| 560 | } |
| 561 | |
| 562 | if (i != npages) { |
| 563 | DRM_ERROR("failed to get user_pages.\n"); |
| 564 | return -EINVAL; |
| 565 | } |
| 566 | |
| 567 | return 0; |
| 568 | } |
| 569 | |
| 570 | get_npages = get_user_pages(current, current->mm, start, |
| 571 | npages, 1, 1, pages, NULL); |
| 572 | get_npages = max(get_npages, 0); |
| 573 | if (get_npages != npages) { |
| 574 | DRM_ERROR("failed to get user_pages.\n"); |
| 575 | while (get_npages) |
| 576 | put_page(pages[--get_npages]); |
| 577 | return -EFAULT; |
| 578 | } |
| 579 | |
| 580 | return 0; |
| 581 | } |
| 582 | |
| 583 | void exynos_gem_put_pages_to_userptr(struct page **pages, |
| 584 | unsigned int npages, |
| 585 | struct vm_area_struct *vma) |
| 586 | { |
| 587 | if (!vma_is_io(vma)) { |
| 588 | unsigned int i; |
| 589 | |
| 590 | for (i = 0; i < npages; i++) { |
| 591 | set_page_dirty_lock(pages[i]); |
| 592 | |
| 593 | /* |
| 594 | * undo the reference we took when populating |
| 595 | * the table. |
| 596 | */ |
| 597 | put_page(pages[i]); |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | int exynos_gem_map_sgt_with_dma(struct drm_device *drm_dev, |
| 603 | struct sg_table *sgt, |
| 604 | enum dma_data_direction dir) |
| 605 | { |
| 606 | int nents; |
| 607 | |
| 608 | mutex_lock(&drm_dev->struct_mutex); |
| 609 | |
| 610 | nents = dma_map_sg(drm_dev->dev, sgt->sgl, sgt->nents, dir); |
| 611 | if (!nents) { |
| 612 | DRM_ERROR("failed to map sgl with dma.\n"); |
| 613 | mutex_unlock(&drm_dev->struct_mutex); |
| 614 | return nents; |
| 615 | } |
| 616 | |
| 617 | mutex_unlock(&drm_dev->struct_mutex); |
| 618 | return 0; |
| 619 | } |
| 620 | |
| 621 | void exynos_gem_unmap_sgt_from_dma(struct drm_device *drm_dev, |
| 622 | struct sg_table *sgt, |
| 623 | enum dma_data_direction dir) |
| 624 | { |
| 625 | dma_unmap_sg(drm_dev->dev, sgt->sgl, sgt->nents, dir); |
| 626 | } |
| 627 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 628 | int exynos_drm_gem_init_object(struct drm_gem_object *obj) |
| 629 | { |
| 630 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 631 | |
| 632 | return 0; |
| 633 | } |
| 634 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 635 | void exynos_drm_gem_free_object(struct drm_gem_object *obj) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 636 | { |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 637 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 638 | struct exynos_drm_gem_buf *buf; |
| 639 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 640 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 641 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 642 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 643 | buf = exynos_gem_obj->buffer; |
| 644 | |
| 645 | if (obj->import_attach) |
| 646 | drm_prime_gem_destroy(obj, buf->sgt); |
| 647 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 648 | exynos_drm_gem_destroy(to_exynos_gem_obj(obj)); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 649 | } |
| 650 | |
| 651 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 652 | struct drm_device *dev, |
| 653 | struct drm_mode_create_dumb *args) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 654 | { |
| 655 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 656 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 657 | |
| 658 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 659 | |
| 660 | /* |
| 661 | * alocate memory to be used for framebuffer. |
| 662 | * - this callback would be called by user application |
| 663 | * with DRM_IOCTL_MODE_CREATE_DUMB command. |
| 664 | */ |
| 665 | |
Cooper Yuan | 3fd6b69 | 2012-06-29 11:49:45 +0900 | [diff] [blame] | 666 | args->pitch = args->width * ((args->bpp + 7) / 8); |
Inki Dae | 7da5907 | 2012-08-17 15:24:03 +0900 | [diff] [blame] | 667 | args->size = args->pitch * args->height; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 668 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 669 | exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 670 | if (IS_ERR(exynos_gem_obj)) |
| 671 | return PTR_ERR(exynos_gem_obj); |
| 672 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 673 | ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, |
| 674 | &args->handle); |
| 675 | if (ret) { |
| 676 | exynos_drm_gem_destroy(exynos_gem_obj); |
| 677 | return ret; |
| 678 | } |
| 679 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 684 | struct drm_device *dev, uint32_t handle, |
| 685 | uint64_t *offset) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 686 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 687 | struct drm_gem_object *obj; |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 688 | int ret = 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 689 | |
| 690 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 691 | |
| 692 | mutex_lock(&dev->struct_mutex); |
| 693 | |
| 694 | /* |
| 695 | * get offset of memory allocated for drm framebuffer. |
| 696 | * - this callback would be called by user application |
| 697 | * with DRM_IOCTL_MODE_MAP_DUMB command. |
| 698 | */ |
| 699 | |
| 700 | obj = drm_gem_object_lookup(dev, file_priv, handle); |
| 701 | if (!obj) { |
| 702 | DRM_ERROR("failed to lookup gem object.\n"); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 703 | ret = -EINVAL; |
| 704 | goto unlock; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 705 | } |
| 706 | |
Laurent Pinchart | 6037baf | 2012-05-16 17:08:55 +0200 | [diff] [blame] | 707 | if (!obj->map_list.map) { |
| 708 | ret = drm_gem_create_mmap_offset(obj); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 709 | if (ret) |
| 710 | goto out; |
| 711 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 712 | |
Laurent Pinchart | 6037baf | 2012-05-16 17:08:55 +0200 | [diff] [blame] | 713 | *offset = (u64)obj->map_list.hash.key << PAGE_SHIFT; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 714 | DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset); |
| 715 | |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 716 | out: |
| 717 | drm_gem_object_unreference(obj); |
| 718 | unlock: |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 719 | mutex_unlock(&dev->struct_mutex); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 720 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 721 | } |
| 722 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 723 | int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, |
| 724 | struct drm_device *dev, |
| 725 | unsigned int handle) |
| 726 | { |
| 727 | int ret; |
| 728 | |
| 729 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 730 | |
| 731 | /* |
| 732 | * obj->refcount and obj->handle_count are decreased and |
| 733 | * if both them are 0 then exynos_drm_gem_free_object() |
| 734 | * would be called by callback to release resources. |
| 735 | */ |
| 736 | ret = drm_gem_handle_delete(file_priv, handle); |
| 737 | if (ret < 0) { |
| 738 | DRM_ERROR("failed to delete drm_gem_handle.\n"); |
| 739 | return ret; |
| 740 | } |
| 741 | |
| 742 | return 0; |
| 743 | } |
| 744 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 745 | int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 746 | { |
| 747 | struct drm_gem_object *obj = vma->vm_private_data; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 748 | struct drm_device *dev = obj->dev; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 749 | unsigned long f_vaddr; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 750 | pgoff_t page_offset; |
| 751 | int ret; |
| 752 | |
| 753 | page_offset = ((unsigned long)vmf->virtual_address - |
| 754 | vma->vm_start) >> PAGE_SHIFT; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 755 | f_vaddr = (unsigned long)vmf->virtual_address; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 756 | |
| 757 | mutex_lock(&dev->struct_mutex); |
| 758 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 759 | ret = exynos_drm_gem_map_buf(obj, vma, f_vaddr, page_offset); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 760 | if (ret < 0) |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 761 | DRM_ERROR("failed to map a buffer with user.\n"); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 762 | |
| 763 | mutex_unlock(&dev->struct_mutex); |
| 764 | |
| 765 | return convert_to_vm_err_msg(ret); |
| 766 | } |
| 767 | |
| 768 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) |
| 769 | { |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 770 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 771 | struct drm_gem_object *obj; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 772 | int ret; |
| 773 | |
| 774 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 775 | |
| 776 | /* set vm_area_struct. */ |
| 777 | ret = drm_gem_mmap(filp, vma); |
| 778 | if (ret < 0) { |
| 779 | DRM_ERROR("failed to mmap.\n"); |
| 780 | return ret; |
| 781 | } |
| 782 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 783 | obj = vma->vm_private_data; |
| 784 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 785 | |
| 786 | ret = check_gem_flags(exynos_gem_obj->flags); |
| 787 | if (ret) { |
| 788 | drm_gem_vm_close(vma); |
| 789 | drm_gem_free_mmap_offset(obj); |
| 790 | return ret; |
| 791 | } |
| 792 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 793 | vma->vm_flags &= ~VM_PFNMAP; |
| 794 | vma->vm_flags |= VM_MIXEDMAP; |
| 795 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 796 | update_vm_cache_attr(exynos_gem_obj, vma); |
| 797 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 798 | return ret; |
| 799 | } |