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 | |
| 102 | if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { |
Rahul Sharma | 4ddc404 | 2012-11-05 21:04:29 +0530 | [diff] [blame] | 103 | if (!buf->sgt) |
| 104 | return -EINTR; |
| 105 | |
| 106 | sgl = buf->sgt->sgl; |
| 107 | for_each_sg(buf->sgt->sgl, sgl, buf->sgt->nents, i) { |
| 108 | if (!sgl) { |
| 109 | DRM_ERROR("invalid SG table\n"); |
| 110 | return -EINTR; |
| 111 | } |
| 112 | if (page_offset < (sgl->length >> PAGE_SHIFT)) |
| 113 | break; |
| 114 | page_offset -= (sgl->length >> PAGE_SHIFT); |
| 115 | } |
| 116 | |
| 117 | if (i >= buf->sgt->nents) { |
| 118 | DRM_ERROR("invalid page offset\n"); |
| 119 | return -EINVAL; |
| 120 | } |
| 121 | |
| 122 | pfn = __phys_to_pfn(sg_phys(sgl)) + page_offset; |
| 123 | } else { |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 124 | if (!buf->pages) |
| 125 | return -EINTR; |
| 126 | |
Rahul Sharma | 4ddc404 | 2012-11-05 21:04:29 +0530 | [diff] [blame] | 127 | pfn = page_to_pfn(buf->pages[0]) + page_offset; |
| 128 | } |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 129 | |
| 130 | return vm_insert_mixed(vma, f_vaddr, pfn); |
| 131 | } |
| 132 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 133 | static int exynos_drm_gem_handle_create(struct drm_gem_object *obj, |
| 134 | struct drm_file *file_priv, |
| 135 | unsigned int *handle) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 136 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 137 | int ret; |
| 138 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 139 | /* |
| 140 | * allocate a id of idr table where the obj is registered |
| 141 | * and handle has the id what user can see. |
| 142 | */ |
| 143 | ret = drm_gem_handle_create(file_priv, obj, handle); |
| 144 | if (ret) |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 145 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 146 | |
| 147 | DRM_DEBUG_KMS("gem handle = 0x%x\n", *handle); |
| 148 | |
| 149 | /* drop reference from allocate - handle holds it now. */ |
| 150 | drm_gem_object_unreference_unlocked(obj); |
| 151 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 152 | return 0; |
| 153 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 154 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 155 | void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj) |
| 156 | { |
| 157 | struct drm_gem_object *obj; |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 158 | struct exynos_drm_gem_buf *buf; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 159 | |
| 160 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 161 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 162 | obj = &exynos_gem_obj->base; |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 163 | buf = exynos_gem_obj->buffer; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 164 | |
| 165 | DRM_DEBUG_KMS("handle count = %d\n", atomic_read(&obj->handle_count)); |
| 166 | |
Inki Dae | c374e73 | 2012-06-12 16:52:54 +0900 | [diff] [blame] | 167 | /* |
| 168 | * do not release memory region from exporter. |
| 169 | * |
| 170 | * the region will be released by exporter |
| 171 | * once dmabuf's refcount becomes 0. |
| 172 | */ |
| 173 | if (obj->import_attach) |
| 174 | goto out; |
| 175 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 176 | exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags, buf); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 177 | |
Inki Dae | c374e73 | 2012-06-12 16:52:54 +0900 | [diff] [blame] | 178 | out: |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 179 | exynos_drm_fini_buf(obj->dev, buf); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 180 | exynos_gem_obj->buffer = NULL; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 181 | |
| 182 | if (obj->map_list.map) |
| 183 | drm_gem_free_mmap_offset(obj); |
| 184 | |
| 185 | /* release file pointer to gem object. */ |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 186 | drm_gem_object_release(obj); |
| 187 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 188 | kfree(exynos_gem_obj); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 189 | exynos_gem_obj = NULL; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 190 | } |
| 191 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 192 | 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] | 193 | unsigned long size) |
| 194 | { |
| 195 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 196 | struct drm_gem_object *obj; |
| 197 | int ret; |
| 198 | |
| 199 | exynos_gem_obj = kzalloc(sizeof(*exynos_gem_obj), GFP_KERNEL); |
| 200 | if (!exynos_gem_obj) { |
| 201 | DRM_ERROR("failed to allocate exynos gem object\n"); |
| 202 | return NULL; |
| 203 | } |
| 204 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 205 | exynos_gem_obj->size = size; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 206 | obj = &exynos_gem_obj->base; |
| 207 | |
| 208 | ret = drm_gem_object_init(dev, obj, size); |
| 209 | if (ret < 0) { |
| 210 | DRM_ERROR("failed to initialize gem object\n"); |
| 211 | kfree(exynos_gem_obj); |
| 212 | return NULL; |
| 213 | } |
| 214 | |
| 215 | DRM_DEBUG_KMS("created file object = 0x%x\n", (unsigned int)obj->filp); |
| 216 | |
| 217 | return exynos_gem_obj; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 218 | } |
| 219 | |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 220 | 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] | 221 | unsigned int flags, |
| 222 | unsigned long size) |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 223 | { |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 224 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 225 | struct exynos_drm_gem_buf *buf; |
| 226 | int ret; |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 227 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 228 | if (!size) { |
| 229 | DRM_ERROR("invalid size.\n"); |
| 230 | return ERR_PTR(-EINVAL); |
| 231 | } |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 232 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 233 | size = roundup_gem_size(size, flags); |
| 234 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 235 | |
| 236 | ret = check_gem_flags(flags); |
| 237 | if (ret) |
| 238 | return ERR_PTR(ret); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 239 | |
| 240 | buf = exynos_drm_init_buf(dev, size); |
| 241 | if (!buf) |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 242 | return ERR_PTR(-ENOMEM); |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 243 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 244 | exynos_gem_obj = exynos_drm_gem_init(dev, size); |
| 245 | if (!exynos_gem_obj) { |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 246 | ret = -ENOMEM; |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 247 | goto err_fini_buf; |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 248 | } |
| 249 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 250 | exynos_gem_obj->buffer = buf; |
| 251 | |
| 252 | /* set memory type and cache attribute from user side. */ |
| 253 | exynos_gem_obj->flags = flags; |
| 254 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 255 | ret = exynos_drm_alloc_buf(dev, buf, flags); |
| 256 | if (ret < 0) { |
| 257 | drm_gem_object_release(&exynos_gem_obj->base); |
| 258 | goto err_fini_buf; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 259 | } |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 260 | |
| 261 | return exynos_gem_obj; |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 262 | |
| 263 | err_fini_buf: |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 264 | exynos_drm_fini_buf(dev, buf); |
| 265 | return ERR_PTR(ret); |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 266 | } |
| 267 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 268 | int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 269 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 270 | { |
| 271 | struct drm_exynos_gem_create *args = data; |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 272 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 273 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 274 | |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 275 | DRM_DEBUG_KMS("%s\n", __FILE__); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 276 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 277 | exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 278 | if (IS_ERR(exynos_gem_obj)) |
| 279 | return PTR_ERR(exynos_gem_obj); |
| 280 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 281 | ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, |
| 282 | &args->handle); |
| 283 | if (ret) { |
| 284 | exynos_drm_gem_destroy(exynos_gem_obj); |
| 285 | return ret; |
| 286 | } |
| 287 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 288 | return 0; |
| 289 | } |
| 290 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 291 | 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] | 292 | unsigned int gem_handle, |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 293 | struct drm_file *filp) |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 294 | { |
| 295 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 296 | struct drm_gem_object *obj; |
| 297 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 298 | obj = drm_gem_object_lookup(dev, filp, gem_handle); |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 299 | if (!obj) { |
| 300 | DRM_ERROR("failed to lookup gem object.\n"); |
| 301 | return ERR_PTR(-EINVAL); |
| 302 | } |
| 303 | |
| 304 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 305 | |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 306 | return &exynos_gem_obj->buffer->dma_addr; |
| 307 | } |
| 308 | |
| 309 | void exynos_drm_gem_put_dma_addr(struct drm_device *dev, |
| 310 | unsigned int gem_handle, |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 311 | struct drm_file *filp) |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 312 | { |
| 313 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 314 | struct drm_gem_object *obj; |
| 315 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame] | 316 | obj = drm_gem_object_lookup(dev, filp, gem_handle); |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 317 | if (!obj) { |
| 318 | DRM_ERROR("failed to lookup gem object.\n"); |
| 319 | return; |
| 320 | } |
| 321 | |
| 322 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 323 | |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 324 | drm_gem_object_unreference_unlocked(obj); |
| 325 | |
| 326 | /* |
| 327 | * decrease obj->refcount one more time because we has already |
| 328 | * increased it at exynos_drm_gem_get_dma_addr(). |
| 329 | */ |
| 330 | drm_gem_object_unreference_unlocked(obj); |
| 331 | } |
| 332 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 333 | 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] | 334 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 335 | { |
| 336 | struct drm_exynos_gem_map_off *args = data; |
| 337 | |
| 338 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 339 | |
| 340 | DRM_DEBUG_KMS("handle = 0x%x, offset = 0x%lx\n", |
| 341 | args->handle, (unsigned long)args->offset); |
| 342 | |
| 343 | if (!(dev->driver->driver_features & DRIVER_GEM)) { |
| 344 | DRM_ERROR("does not support GEM.\n"); |
| 345 | return -ENODEV; |
| 346 | } |
| 347 | |
| 348 | return exynos_drm_gem_dumb_map_offset(file_priv, dev, args->handle, |
| 349 | &args->offset); |
| 350 | } |
| 351 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 352 | static struct drm_file *exynos_drm_find_drm_file(struct drm_device *drm_dev, |
| 353 | struct file *filp) |
| 354 | { |
| 355 | struct drm_file *file_priv; |
| 356 | |
| 357 | mutex_lock(&drm_dev->struct_mutex); |
| 358 | |
| 359 | /* find current process's drm_file from filelist. */ |
| 360 | list_for_each_entry(file_priv, &drm_dev->filelist, lhead) { |
| 361 | if (file_priv->filp == filp) { |
| 362 | mutex_unlock(&drm_dev->struct_mutex); |
| 363 | return file_priv; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | mutex_unlock(&drm_dev->struct_mutex); |
| 368 | WARN_ON(1); |
| 369 | |
| 370 | return ERR_PTR(-EFAULT); |
| 371 | } |
| 372 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 373 | static int exynos_drm_gem_mmap_buffer(struct file *filp, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 374 | struct vm_area_struct *vma) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 375 | { |
| 376 | struct drm_gem_object *obj = filp->private_data; |
| 377 | 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^] | 378 | struct drm_device *drm_dev = obj->dev; |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 379 | struct exynos_drm_gem_buf *buffer; |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 380 | struct drm_file *file_priv; |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 381 | unsigned long vm_size; |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 382 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 383 | |
| 384 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 385 | |
Konstantin Khlebnikov | 314e51b | 2012-10-08 16:29:02 -0700 | [diff] [blame] | 386 | vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 387 | vma->vm_private_data = obj; |
| 388 | vma->vm_ops = drm_dev->driver->gem_vm_ops; |
| 389 | |
| 390 | /* restore it to driver's fops. */ |
| 391 | filp->f_op = fops_get(drm_dev->driver->fops); |
| 392 | |
| 393 | file_priv = exynos_drm_find_drm_file(drm_dev, filp); |
| 394 | if (IS_ERR(file_priv)) |
| 395 | return PTR_ERR(file_priv); |
| 396 | |
| 397 | /* restore it to drm_file. */ |
| 398 | filp->private_data = file_priv; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 399 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 400 | update_vm_cache_attr(exynos_gem_obj, vma); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 401 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 402 | vm_size = vma->vm_end - vma->vm_start; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 403 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 404 | /* |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 405 | * a buffer contains information to physically continuous memory |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 406 | * allocated by user request or at framebuffer creation. |
| 407 | */ |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 408 | buffer = exynos_gem_obj->buffer; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 409 | |
| 410 | /* check if user-requested size is valid. */ |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 411 | if (vm_size > buffer->size) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 412 | return -EINVAL; |
| 413 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 414 | ret = dma_mmap_attrs(drm_dev->dev, vma, buffer->kvaddr, |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 415 | buffer->dma_addr, buffer->size, |
| 416 | &buffer->dma_attrs); |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 417 | if (ret < 0) { |
| 418 | DRM_ERROR("failed to mmap.\n"); |
| 419 | return ret; |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * take a reference to this mapping of the object. And this reference |
| 424 | * is unreferenced by the corresponding vm_close call. |
| 425 | */ |
| 426 | drm_gem_object_reference(obj); |
| 427 | |
| 428 | mutex_lock(&drm_dev->struct_mutex); |
| 429 | drm_vm_open_locked(drm_dev, vma); |
| 430 | mutex_unlock(&drm_dev->struct_mutex); |
| 431 | |
| 432 | return 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | static const struct file_operations exynos_drm_gem_fops = { |
| 436 | .mmap = exynos_drm_gem_mmap_buffer, |
| 437 | }; |
| 438 | |
| 439 | int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 440 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 441 | { |
| 442 | struct drm_exynos_gem_mmap *args = data; |
| 443 | struct drm_gem_object *obj; |
| 444 | unsigned int addr; |
| 445 | |
| 446 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 447 | |
| 448 | if (!(dev->driver->driver_features & DRIVER_GEM)) { |
| 449 | DRM_ERROR("does not support GEM.\n"); |
| 450 | return -ENODEV; |
| 451 | } |
| 452 | |
| 453 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 454 | if (!obj) { |
| 455 | DRM_ERROR("failed to lookup gem object.\n"); |
| 456 | return -EINVAL; |
| 457 | } |
| 458 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 459 | /* |
| 460 | * Set specific mmper's fops. And it will be restored by |
| 461 | * exynos_drm_gem_mmap_buffer to dev->driver->fops. |
| 462 | * This is used to call specific mapper temporarily. |
| 463 | */ |
| 464 | file_priv->filp->f_op = &exynos_drm_gem_fops; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 465 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 466 | /* |
| 467 | * Set gem object to private_data so that specific mmaper |
| 468 | * can get the gem object. And it will be restored by |
| 469 | * exynos_drm_gem_mmap_buffer to drm_file. |
| 470 | */ |
| 471 | file_priv->filp->private_data = obj; |
| 472 | |
| 473 | addr = vm_mmap(file_priv->filp, 0, args->size, |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 474 | PROT_READ | PROT_WRITE, MAP_SHARED, 0); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 475 | |
| 476 | drm_gem_object_unreference_unlocked(obj); |
| 477 | |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 478 | if (IS_ERR((void *)addr)) { |
| 479 | file_priv->filp->private_data = file_priv; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 480 | return PTR_ERR((void *)addr); |
Inki Dae | 5b07c66 | 2012-11-08 21:52:54 +0900 | [diff] [blame^] | 481 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 482 | |
| 483 | args->mapped = addr; |
| 484 | |
| 485 | DRM_DEBUG_KMS("mapped = 0x%lx\n", (unsigned long)args->mapped); |
| 486 | |
| 487 | return 0; |
| 488 | } |
| 489 | |
Inki Dae | 40cd7e0 | 2012-05-04 15:51:17 +0900 | [diff] [blame] | 490 | int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, |
| 491 | struct drm_file *file_priv) |
| 492 | { struct exynos_drm_gem_obj *exynos_gem_obj; |
| 493 | struct drm_exynos_gem_info *args = data; |
| 494 | struct drm_gem_object *obj; |
| 495 | |
| 496 | mutex_lock(&dev->struct_mutex); |
| 497 | |
| 498 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 499 | if (!obj) { |
| 500 | DRM_ERROR("failed to lookup gem object.\n"); |
| 501 | mutex_unlock(&dev->struct_mutex); |
| 502 | return -EINVAL; |
| 503 | } |
| 504 | |
| 505 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 506 | |
| 507 | args->flags = exynos_gem_obj->flags; |
| 508 | args->size = exynos_gem_obj->size; |
| 509 | |
| 510 | drm_gem_object_unreference(obj); |
| 511 | mutex_unlock(&dev->struct_mutex); |
| 512 | |
| 513 | return 0; |
| 514 | } |
| 515 | |
Inki Dae | 2a3098f | 2012-11-04 05:48:52 -0800 | [diff] [blame] | 516 | struct vm_area_struct *exynos_gem_get_vma(struct vm_area_struct *vma) |
| 517 | { |
| 518 | struct vm_area_struct *vma_copy; |
| 519 | |
| 520 | vma_copy = kmalloc(sizeof(*vma_copy), GFP_KERNEL); |
| 521 | if (!vma_copy) |
| 522 | return NULL; |
| 523 | |
| 524 | if (vma->vm_ops && vma->vm_ops->open) |
| 525 | vma->vm_ops->open(vma); |
| 526 | |
| 527 | if (vma->vm_file) |
| 528 | get_file(vma->vm_file); |
| 529 | |
| 530 | memcpy(vma_copy, vma, sizeof(*vma)); |
| 531 | |
| 532 | vma_copy->vm_mm = NULL; |
| 533 | vma_copy->vm_next = NULL; |
| 534 | vma_copy->vm_prev = NULL; |
| 535 | |
| 536 | return vma_copy; |
| 537 | } |
| 538 | |
| 539 | void exynos_gem_put_vma(struct vm_area_struct *vma) |
| 540 | { |
| 541 | if (!vma) |
| 542 | return; |
| 543 | |
| 544 | if (vma->vm_ops && vma->vm_ops->close) |
| 545 | vma->vm_ops->close(vma); |
| 546 | |
| 547 | if (vma->vm_file) |
| 548 | fput(vma->vm_file); |
| 549 | |
| 550 | kfree(vma); |
| 551 | } |
| 552 | |
| 553 | int exynos_gem_get_pages_from_userptr(unsigned long start, |
| 554 | unsigned int npages, |
| 555 | struct page **pages, |
| 556 | struct vm_area_struct *vma) |
| 557 | { |
| 558 | int get_npages; |
| 559 | |
| 560 | /* the memory region mmaped with VM_PFNMAP. */ |
| 561 | if (vma_is_io(vma)) { |
| 562 | unsigned int i; |
| 563 | |
| 564 | for (i = 0; i < npages; ++i, start += PAGE_SIZE) { |
| 565 | unsigned long pfn; |
| 566 | int ret = follow_pfn(vma, start, &pfn); |
| 567 | if (ret) |
| 568 | return ret; |
| 569 | |
| 570 | pages[i] = pfn_to_page(pfn); |
| 571 | } |
| 572 | |
| 573 | if (i != npages) { |
| 574 | DRM_ERROR("failed to get user_pages.\n"); |
| 575 | return -EINVAL; |
| 576 | } |
| 577 | |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | get_npages = get_user_pages(current, current->mm, start, |
| 582 | npages, 1, 1, pages, NULL); |
| 583 | get_npages = max(get_npages, 0); |
| 584 | if (get_npages != npages) { |
| 585 | DRM_ERROR("failed to get user_pages.\n"); |
| 586 | while (get_npages) |
| 587 | put_page(pages[--get_npages]); |
| 588 | return -EFAULT; |
| 589 | } |
| 590 | |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | void exynos_gem_put_pages_to_userptr(struct page **pages, |
| 595 | unsigned int npages, |
| 596 | struct vm_area_struct *vma) |
| 597 | { |
| 598 | if (!vma_is_io(vma)) { |
| 599 | unsigned int i; |
| 600 | |
| 601 | for (i = 0; i < npages; i++) { |
| 602 | set_page_dirty_lock(pages[i]); |
| 603 | |
| 604 | /* |
| 605 | * undo the reference we took when populating |
| 606 | * the table. |
| 607 | */ |
| 608 | put_page(pages[i]); |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | int exynos_gem_map_sgt_with_dma(struct drm_device *drm_dev, |
| 614 | struct sg_table *sgt, |
| 615 | enum dma_data_direction dir) |
| 616 | { |
| 617 | int nents; |
| 618 | |
| 619 | mutex_lock(&drm_dev->struct_mutex); |
| 620 | |
| 621 | nents = dma_map_sg(drm_dev->dev, sgt->sgl, sgt->nents, dir); |
| 622 | if (!nents) { |
| 623 | DRM_ERROR("failed to map sgl with dma.\n"); |
| 624 | mutex_unlock(&drm_dev->struct_mutex); |
| 625 | return nents; |
| 626 | } |
| 627 | |
| 628 | mutex_unlock(&drm_dev->struct_mutex); |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | void exynos_gem_unmap_sgt_from_dma(struct drm_device *drm_dev, |
| 633 | struct sg_table *sgt, |
| 634 | enum dma_data_direction dir) |
| 635 | { |
| 636 | dma_unmap_sg(drm_dev->dev, sgt->sgl, sgt->nents, dir); |
| 637 | } |
| 638 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 639 | int exynos_drm_gem_init_object(struct drm_gem_object *obj) |
| 640 | { |
| 641 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 642 | |
| 643 | return 0; |
| 644 | } |
| 645 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 646 | void exynos_drm_gem_free_object(struct drm_gem_object *obj) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 647 | { |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 648 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 649 | struct exynos_drm_gem_buf *buf; |
| 650 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 651 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 652 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 653 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 654 | buf = exynos_gem_obj->buffer; |
| 655 | |
| 656 | if (obj->import_attach) |
| 657 | drm_prime_gem_destroy(obj, buf->sgt); |
| 658 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 659 | exynos_drm_gem_destroy(to_exynos_gem_obj(obj)); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 660 | } |
| 661 | |
| 662 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 663 | struct drm_device *dev, |
| 664 | struct drm_mode_create_dumb *args) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 665 | { |
| 666 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 667 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 668 | |
| 669 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 670 | |
| 671 | /* |
| 672 | * alocate memory to be used for framebuffer. |
| 673 | * - this callback would be called by user application |
| 674 | * with DRM_IOCTL_MODE_CREATE_DUMB command. |
| 675 | */ |
| 676 | |
Cooper Yuan | 3fd6b69 | 2012-06-29 11:49:45 +0900 | [diff] [blame] | 677 | args->pitch = args->width * ((args->bpp + 7) / 8); |
Inki Dae | 7da5907 | 2012-08-17 15:24:03 +0900 | [diff] [blame] | 678 | args->size = args->pitch * args->height; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 679 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 680 | exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 681 | if (IS_ERR(exynos_gem_obj)) |
| 682 | return PTR_ERR(exynos_gem_obj); |
| 683 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 684 | ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, |
| 685 | &args->handle); |
| 686 | if (ret) { |
| 687 | exynos_drm_gem_destroy(exynos_gem_obj); |
| 688 | return ret; |
| 689 | } |
| 690 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 691 | return 0; |
| 692 | } |
| 693 | |
| 694 | int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 695 | struct drm_device *dev, uint32_t handle, |
| 696 | uint64_t *offset) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 697 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 698 | struct drm_gem_object *obj; |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 699 | int ret = 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 700 | |
| 701 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 702 | |
| 703 | mutex_lock(&dev->struct_mutex); |
| 704 | |
| 705 | /* |
| 706 | * get offset of memory allocated for drm framebuffer. |
| 707 | * - this callback would be called by user application |
| 708 | * with DRM_IOCTL_MODE_MAP_DUMB command. |
| 709 | */ |
| 710 | |
| 711 | obj = drm_gem_object_lookup(dev, file_priv, handle); |
| 712 | if (!obj) { |
| 713 | DRM_ERROR("failed to lookup gem object.\n"); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 714 | ret = -EINVAL; |
| 715 | goto unlock; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 716 | } |
| 717 | |
Laurent Pinchart | 6037baf | 2012-05-16 17:08:55 +0200 | [diff] [blame] | 718 | if (!obj->map_list.map) { |
| 719 | ret = drm_gem_create_mmap_offset(obj); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 720 | if (ret) |
| 721 | goto out; |
| 722 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 723 | |
Laurent Pinchart | 6037baf | 2012-05-16 17:08:55 +0200 | [diff] [blame] | 724 | *offset = (u64)obj->map_list.hash.key << PAGE_SHIFT; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 725 | DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset); |
| 726 | |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 727 | out: |
| 728 | drm_gem_object_unreference(obj); |
| 729 | unlock: |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 730 | mutex_unlock(&dev->struct_mutex); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 731 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 732 | } |
| 733 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 734 | int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, |
| 735 | struct drm_device *dev, |
| 736 | unsigned int handle) |
| 737 | { |
| 738 | int ret; |
| 739 | |
| 740 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 741 | |
| 742 | /* |
| 743 | * obj->refcount and obj->handle_count are decreased and |
| 744 | * if both them are 0 then exynos_drm_gem_free_object() |
| 745 | * would be called by callback to release resources. |
| 746 | */ |
| 747 | ret = drm_gem_handle_delete(file_priv, handle); |
| 748 | if (ret < 0) { |
| 749 | DRM_ERROR("failed to delete drm_gem_handle.\n"); |
| 750 | return ret; |
| 751 | } |
| 752 | |
| 753 | return 0; |
| 754 | } |
| 755 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 756 | int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 757 | { |
| 758 | struct drm_gem_object *obj = vma->vm_private_data; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 759 | struct drm_device *dev = obj->dev; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 760 | unsigned long f_vaddr; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 761 | pgoff_t page_offset; |
| 762 | int ret; |
| 763 | |
| 764 | page_offset = ((unsigned long)vmf->virtual_address - |
| 765 | vma->vm_start) >> PAGE_SHIFT; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 766 | f_vaddr = (unsigned long)vmf->virtual_address; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 767 | |
| 768 | mutex_lock(&dev->struct_mutex); |
| 769 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 770 | ret = exynos_drm_gem_map_buf(obj, vma, f_vaddr, page_offset); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 771 | if (ret < 0) |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 772 | DRM_ERROR("failed to map a buffer with user.\n"); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 773 | |
| 774 | mutex_unlock(&dev->struct_mutex); |
| 775 | |
| 776 | return convert_to_vm_err_msg(ret); |
| 777 | } |
| 778 | |
| 779 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) |
| 780 | { |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 781 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 782 | struct drm_gem_object *obj; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 783 | int ret; |
| 784 | |
| 785 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 786 | |
| 787 | /* set vm_area_struct. */ |
| 788 | ret = drm_gem_mmap(filp, vma); |
| 789 | if (ret < 0) { |
| 790 | DRM_ERROR("failed to mmap.\n"); |
| 791 | return ret; |
| 792 | } |
| 793 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 794 | obj = vma->vm_private_data; |
| 795 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 796 | |
| 797 | ret = check_gem_flags(exynos_gem_obj->flags); |
| 798 | if (ret) { |
| 799 | drm_gem_vm_close(vma); |
| 800 | drm_gem_free_mmap_offset(obj); |
| 801 | return ret; |
| 802 | } |
| 803 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 804 | vma->vm_flags &= ~VM_PFNMAP; |
| 805 | vma->vm_flags |= VM_MIXEDMAP; |
| 806 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 807 | update_vm_cache_attr(exynos_gem_obj, vma); |
| 808 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 809 | return ret; |
| 810 | } |