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; |
| 98 | unsigned long pfn; |
| 99 | |
| 100 | if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 101 | if (!buf->pages) |
| 102 | return -EINTR; |
| 103 | |
Inki Dae | f6ead8d | 2012-04-23 19:41:14 +0900 | [diff] [blame] | 104 | pfn = page_to_pfn(buf->pages[page_offset++]); |
| 105 | } else |
| 106 | pfn = (buf->dma_addr >> PAGE_SHIFT) + page_offset; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 107 | |
| 108 | return vm_insert_mixed(vma, f_vaddr, pfn); |
| 109 | } |
| 110 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 111 | static int exynos_drm_gem_handle_create(struct drm_gem_object *obj, |
| 112 | struct drm_file *file_priv, |
| 113 | unsigned int *handle) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 114 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 115 | int ret; |
| 116 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 117 | /* |
| 118 | * allocate a id of idr table where the obj is registered |
| 119 | * and handle has the id what user can see. |
| 120 | */ |
| 121 | ret = drm_gem_handle_create(file_priv, obj, handle); |
| 122 | if (ret) |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 123 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 124 | |
| 125 | DRM_DEBUG_KMS("gem handle = 0x%x\n", *handle); |
| 126 | |
| 127 | /* drop reference from allocate - handle holds it now. */ |
| 128 | drm_gem_object_unreference_unlocked(obj); |
| 129 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 130 | return 0; |
| 131 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 132 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 133 | void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj) |
| 134 | { |
| 135 | struct drm_gem_object *obj; |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 136 | struct exynos_drm_gem_buf *buf; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 137 | |
| 138 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 139 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 140 | obj = &exynos_gem_obj->base; |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 141 | buf = exynos_gem_obj->buffer; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 142 | |
| 143 | DRM_DEBUG_KMS("handle count = %d\n", atomic_read(&obj->handle_count)); |
| 144 | |
Inki Dae | c374e73 | 2012-06-12 16:52:54 +0900 | [diff] [blame] | 145 | /* |
| 146 | * do not release memory region from exporter. |
| 147 | * |
| 148 | * the region will be released by exporter |
| 149 | * once dmabuf's refcount becomes 0. |
| 150 | */ |
| 151 | if (obj->import_attach) |
| 152 | goto out; |
| 153 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 154 | exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags, buf); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 155 | |
Inki Dae | c374e73 | 2012-06-12 16:52:54 +0900 | [diff] [blame] | 156 | out: |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 157 | exynos_drm_fini_buf(obj->dev, buf); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 158 | exynos_gem_obj->buffer = NULL; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 159 | |
| 160 | if (obj->map_list.map) |
| 161 | drm_gem_free_mmap_offset(obj); |
| 162 | |
| 163 | /* release file pointer to gem object. */ |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 164 | drm_gem_object_release(obj); |
| 165 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 166 | kfree(exynos_gem_obj); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 167 | exynos_gem_obj = NULL; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 168 | } |
| 169 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 170 | 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] | 171 | unsigned long size) |
| 172 | { |
| 173 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 174 | struct drm_gem_object *obj; |
| 175 | int ret; |
| 176 | |
| 177 | exynos_gem_obj = kzalloc(sizeof(*exynos_gem_obj), GFP_KERNEL); |
| 178 | if (!exynos_gem_obj) { |
| 179 | DRM_ERROR("failed to allocate exynos gem object\n"); |
| 180 | return NULL; |
| 181 | } |
| 182 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 183 | exynos_gem_obj->size = size; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 184 | obj = &exynos_gem_obj->base; |
| 185 | |
| 186 | ret = drm_gem_object_init(dev, obj, size); |
| 187 | if (ret < 0) { |
| 188 | DRM_ERROR("failed to initialize gem object\n"); |
| 189 | kfree(exynos_gem_obj); |
| 190 | return NULL; |
| 191 | } |
| 192 | |
| 193 | DRM_DEBUG_KMS("created file object = 0x%x\n", (unsigned int)obj->filp); |
| 194 | |
| 195 | return exynos_gem_obj; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 196 | } |
| 197 | |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 198 | 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] | 199 | unsigned int flags, |
| 200 | unsigned long size) |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 201 | { |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 202 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 203 | struct exynos_drm_gem_buf *buf; |
| 204 | int ret; |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 205 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 206 | if (!size) { |
| 207 | DRM_ERROR("invalid size.\n"); |
| 208 | return ERR_PTR(-EINVAL); |
| 209 | } |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 210 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 211 | size = roundup_gem_size(size, flags); |
| 212 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 213 | |
| 214 | ret = check_gem_flags(flags); |
| 215 | if (ret) |
| 216 | return ERR_PTR(ret); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 217 | |
| 218 | buf = exynos_drm_init_buf(dev, size); |
| 219 | if (!buf) |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 220 | return ERR_PTR(-ENOMEM); |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 221 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 222 | exynos_gem_obj = exynos_drm_gem_init(dev, size); |
| 223 | if (!exynos_gem_obj) { |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 224 | ret = -ENOMEM; |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 225 | goto err_fini_buf; |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 226 | } |
| 227 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 228 | exynos_gem_obj->buffer = buf; |
| 229 | |
| 230 | /* set memory type and cache attribute from user side. */ |
| 231 | exynos_gem_obj->flags = flags; |
| 232 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 233 | ret = exynos_drm_alloc_buf(dev, buf, flags); |
| 234 | if (ret < 0) { |
| 235 | drm_gem_object_release(&exynos_gem_obj->base); |
| 236 | goto err_fini_buf; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 237 | } |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 238 | |
| 239 | return exynos_gem_obj; |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 240 | |
| 241 | err_fini_buf: |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 242 | exynos_drm_fini_buf(dev, buf); |
| 243 | return ERR_PTR(ret); |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 244 | } |
| 245 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 246 | int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 247 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 248 | { |
| 249 | struct drm_exynos_gem_create *args = data; |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 250 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 251 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 252 | |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 253 | DRM_DEBUG_KMS("%s\n", __FILE__); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 254 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 255 | exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 256 | if (IS_ERR(exynos_gem_obj)) |
| 257 | return PTR_ERR(exynos_gem_obj); |
| 258 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 259 | ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, |
| 260 | &args->handle); |
| 261 | if (ret) { |
| 262 | exynos_drm_gem_destroy(exynos_gem_obj); |
| 263 | return ret; |
| 264 | } |
| 265 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 266 | return 0; |
| 267 | } |
| 268 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame^] | 269 | 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] | 270 | unsigned int gem_handle, |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame^] | 271 | struct drm_file *filp) |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 272 | { |
| 273 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 274 | struct drm_gem_object *obj; |
| 275 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame^] | 276 | obj = drm_gem_object_lookup(dev, filp, gem_handle); |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 277 | if (!obj) { |
| 278 | DRM_ERROR("failed to lookup gem object.\n"); |
| 279 | return ERR_PTR(-EINVAL); |
| 280 | } |
| 281 | |
| 282 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 283 | |
| 284 | if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { |
| 285 | DRM_DEBUG_KMS("not support NONCONTIG type.\n"); |
| 286 | drm_gem_object_unreference_unlocked(obj); |
| 287 | |
| 288 | /* TODO */ |
| 289 | return ERR_PTR(-EINVAL); |
| 290 | } |
| 291 | |
| 292 | return &exynos_gem_obj->buffer->dma_addr; |
| 293 | } |
| 294 | |
| 295 | void exynos_drm_gem_put_dma_addr(struct drm_device *dev, |
| 296 | unsigned int gem_handle, |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame^] | 297 | struct drm_file *filp) |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 298 | { |
| 299 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 300 | struct drm_gem_object *obj; |
| 301 | |
Inki Dae | d87342c | 2012-11-03 21:53:24 -0700 | [diff] [blame^] | 302 | obj = drm_gem_object_lookup(dev, filp, gem_handle); |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 303 | if (!obj) { |
| 304 | DRM_ERROR("failed to lookup gem object.\n"); |
| 305 | return; |
| 306 | } |
| 307 | |
| 308 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 309 | |
| 310 | if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { |
| 311 | DRM_DEBUG_KMS("not support NONCONTIG type.\n"); |
| 312 | drm_gem_object_unreference_unlocked(obj); |
| 313 | |
| 314 | /* TODO */ |
| 315 | return; |
| 316 | } |
| 317 | |
| 318 | drm_gem_object_unreference_unlocked(obj); |
| 319 | |
| 320 | /* |
| 321 | * decrease obj->refcount one more time because we has already |
| 322 | * increased it at exynos_drm_gem_get_dma_addr(). |
| 323 | */ |
| 324 | drm_gem_object_unreference_unlocked(obj); |
| 325 | } |
| 326 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 327 | 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] | 328 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 329 | { |
| 330 | struct drm_exynos_gem_map_off *args = data; |
| 331 | |
| 332 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 333 | |
| 334 | DRM_DEBUG_KMS("handle = 0x%x, offset = 0x%lx\n", |
| 335 | args->handle, (unsigned long)args->offset); |
| 336 | |
| 337 | if (!(dev->driver->driver_features & DRIVER_GEM)) { |
| 338 | DRM_ERROR("does not support GEM.\n"); |
| 339 | return -ENODEV; |
| 340 | } |
| 341 | |
| 342 | return exynos_drm_gem_dumb_map_offset(file_priv, dev, args->handle, |
| 343 | &args->offset); |
| 344 | } |
| 345 | |
| 346 | static int exynos_drm_gem_mmap_buffer(struct file *filp, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 347 | struct vm_area_struct *vma) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 348 | { |
| 349 | struct drm_gem_object *obj = filp->private_data; |
| 350 | struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 351 | struct exynos_drm_gem_buf *buffer; |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 352 | unsigned long vm_size; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 353 | |
| 354 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 355 | |
Konstantin Khlebnikov | 314e51b | 2012-10-08 16:29:02 -0700 | [diff] [blame] | 356 | vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 357 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 358 | update_vm_cache_attr(exynos_gem_obj, vma); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 359 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 360 | vm_size = vma->vm_end - vma->vm_start; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 361 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 362 | /* |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 363 | * a buffer contains information to physically continuous memory |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 364 | * allocated by user request or at framebuffer creation. |
| 365 | */ |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 366 | buffer = exynos_gem_obj->buffer; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 367 | |
| 368 | /* check if user-requested size is valid. */ |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 369 | if (vm_size > buffer->size) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 370 | return -EINVAL; |
| 371 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 372 | return dma_mmap_attrs(obj->dev->dev, vma, buffer->kvaddr, |
| 373 | buffer->dma_addr, buffer->size, |
| 374 | &buffer->dma_attrs); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | static const struct file_operations exynos_drm_gem_fops = { |
| 378 | .mmap = exynos_drm_gem_mmap_buffer, |
| 379 | }; |
| 380 | |
| 381 | int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 382 | struct drm_file *file_priv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 383 | { |
| 384 | struct drm_exynos_gem_mmap *args = data; |
| 385 | struct drm_gem_object *obj; |
| 386 | unsigned int addr; |
| 387 | |
| 388 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 389 | |
| 390 | if (!(dev->driver->driver_features & DRIVER_GEM)) { |
| 391 | DRM_ERROR("does not support GEM.\n"); |
| 392 | return -ENODEV; |
| 393 | } |
| 394 | |
| 395 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 396 | if (!obj) { |
| 397 | DRM_ERROR("failed to lookup gem object.\n"); |
| 398 | return -EINVAL; |
| 399 | } |
| 400 | |
| 401 | obj->filp->f_op = &exynos_drm_gem_fops; |
| 402 | obj->filp->private_data = obj; |
| 403 | |
Linus Torvalds | 6be5ceb | 2012-04-20 17:13:58 -0700 | [diff] [blame] | 404 | addr = vm_mmap(obj->filp, 0, args->size, |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 405 | PROT_READ | PROT_WRITE, MAP_SHARED, 0); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 406 | |
| 407 | drm_gem_object_unreference_unlocked(obj); |
| 408 | |
| 409 | if (IS_ERR((void *)addr)) |
| 410 | return PTR_ERR((void *)addr); |
| 411 | |
| 412 | args->mapped = addr; |
| 413 | |
| 414 | DRM_DEBUG_KMS("mapped = 0x%lx\n", (unsigned long)args->mapped); |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
Inki Dae | 40cd7e0 | 2012-05-04 15:51:17 +0900 | [diff] [blame] | 419 | int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, |
| 420 | struct drm_file *file_priv) |
| 421 | { struct exynos_drm_gem_obj *exynos_gem_obj; |
| 422 | struct drm_exynos_gem_info *args = data; |
| 423 | struct drm_gem_object *obj; |
| 424 | |
| 425 | mutex_lock(&dev->struct_mutex); |
| 426 | |
| 427 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 428 | if (!obj) { |
| 429 | DRM_ERROR("failed to lookup gem object.\n"); |
| 430 | mutex_unlock(&dev->struct_mutex); |
| 431 | return -EINVAL; |
| 432 | } |
| 433 | |
| 434 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 435 | |
| 436 | args->flags = exynos_gem_obj->flags; |
| 437 | args->size = exynos_gem_obj->size; |
| 438 | |
| 439 | drm_gem_object_unreference(obj); |
| 440 | mutex_unlock(&dev->struct_mutex); |
| 441 | |
| 442 | return 0; |
| 443 | } |
| 444 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 445 | int exynos_drm_gem_init_object(struct drm_gem_object *obj) |
| 446 | { |
| 447 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 448 | |
| 449 | return 0; |
| 450 | } |
| 451 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 452 | void exynos_drm_gem_free_object(struct drm_gem_object *obj) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 453 | { |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 454 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 455 | struct exynos_drm_gem_buf *buf; |
| 456 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 457 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 458 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 459 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 460 | buf = exynos_gem_obj->buffer; |
| 461 | |
| 462 | if (obj->import_attach) |
| 463 | drm_prime_gem_destroy(obj, buf->sgt); |
| 464 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 465 | exynos_drm_gem_destroy(to_exynos_gem_obj(obj)); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 469 | struct drm_device *dev, |
| 470 | struct drm_mode_create_dumb *args) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 471 | { |
| 472 | struct exynos_drm_gem_obj *exynos_gem_obj; |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 473 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 474 | |
| 475 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 476 | |
| 477 | /* |
| 478 | * alocate memory to be used for framebuffer. |
| 479 | * - this callback would be called by user application |
| 480 | * with DRM_IOCTL_MODE_CREATE_DUMB command. |
| 481 | */ |
| 482 | |
Cooper Yuan | 3fd6b69 | 2012-06-29 11:49:45 +0900 | [diff] [blame] | 483 | args->pitch = args->width * ((args->bpp + 7) / 8); |
Inki Dae | 7da5907 | 2012-08-17 15:24:03 +0900 | [diff] [blame] | 484 | args->size = args->pitch * args->height; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 485 | |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 486 | exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 487 | if (IS_ERR(exynos_gem_obj)) |
| 488 | return PTR_ERR(exynos_gem_obj); |
| 489 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 490 | ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, |
| 491 | &args->handle); |
| 492 | if (ret) { |
| 493 | exynos_drm_gem_destroy(exynos_gem_obj); |
| 494 | return ret; |
| 495 | } |
| 496 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 497 | return 0; |
| 498 | } |
| 499 | |
| 500 | int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 501 | struct drm_device *dev, uint32_t handle, |
| 502 | uint64_t *offset) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 503 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 504 | struct drm_gem_object *obj; |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 505 | int ret = 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 506 | |
| 507 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 508 | |
| 509 | mutex_lock(&dev->struct_mutex); |
| 510 | |
| 511 | /* |
| 512 | * get offset of memory allocated for drm framebuffer. |
| 513 | * - this callback would be called by user application |
| 514 | * with DRM_IOCTL_MODE_MAP_DUMB command. |
| 515 | */ |
| 516 | |
| 517 | obj = drm_gem_object_lookup(dev, file_priv, handle); |
| 518 | if (!obj) { |
| 519 | DRM_ERROR("failed to lookup gem object.\n"); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 520 | ret = -EINVAL; |
| 521 | goto unlock; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 522 | } |
| 523 | |
Laurent Pinchart | 6037baf | 2012-05-16 17:08:55 +0200 | [diff] [blame] | 524 | if (!obj->map_list.map) { |
| 525 | ret = drm_gem_create_mmap_offset(obj); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 526 | if (ret) |
| 527 | goto out; |
| 528 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 529 | |
Laurent Pinchart | 6037baf | 2012-05-16 17:08:55 +0200 | [diff] [blame] | 530 | *offset = (u64)obj->map_list.hash.key << PAGE_SHIFT; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 531 | DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset); |
| 532 | |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 533 | out: |
| 534 | drm_gem_object_unreference(obj); |
| 535 | unlock: |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 536 | mutex_unlock(&dev->struct_mutex); |
Joonyoung Shim | 2d91cf1 | 2011-12-13 14:32:24 +0900 | [diff] [blame] | 537 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 538 | } |
| 539 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 540 | int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, |
| 541 | struct drm_device *dev, |
| 542 | unsigned int handle) |
| 543 | { |
| 544 | int ret; |
| 545 | |
| 546 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 547 | |
| 548 | /* |
| 549 | * obj->refcount and obj->handle_count are decreased and |
| 550 | * if both them are 0 then exynos_drm_gem_free_object() |
| 551 | * would be called by callback to release resources. |
| 552 | */ |
| 553 | ret = drm_gem_handle_delete(file_priv, handle); |
| 554 | if (ret < 0) { |
| 555 | DRM_ERROR("failed to delete drm_gem_handle.\n"); |
| 556 | return ret; |
| 557 | } |
| 558 | |
| 559 | return 0; |
| 560 | } |
| 561 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 562 | int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 563 | { |
| 564 | struct drm_gem_object *obj = vma->vm_private_data; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 565 | struct drm_device *dev = obj->dev; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 566 | unsigned long f_vaddr; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 567 | pgoff_t page_offset; |
| 568 | int ret; |
| 569 | |
| 570 | page_offset = ((unsigned long)vmf->virtual_address - |
| 571 | vma->vm_start) >> PAGE_SHIFT; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 572 | f_vaddr = (unsigned long)vmf->virtual_address; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 573 | |
| 574 | mutex_lock(&dev->struct_mutex); |
| 575 | |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 576 | ret = exynos_drm_gem_map_buf(obj, vma, f_vaddr, page_offset); |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 577 | if (ret < 0) |
Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 578 | DRM_ERROR("failed to map a buffer with user.\n"); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 579 | |
| 580 | mutex_unlock(&dev->struct_mutex); |
| 581 | |
| 582 | return convert_to_vm_err_msg(ret); |
| 583 | } |
| 584 | |
| 585 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) |
| 586 | { |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 587 | struct exynos_drm_gem_obj *exynos_gem_obj; |
| 588 | struct drm_gem_object *obj; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 589 | int ret; |
| 590 | |
| 591 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 592 | |
| 593 | /* set vm_area_struct. */ |
| 594 | ret = drm_gem_mmap(filp, vma); |
| 595 | if (ret < 0) { |
| 596 | DRM_ERROR("failed to mmap.\n"); |
| 597 | return ret; |
| 598 | } |
| 599 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 600 | obj = vma->vm_private_data; |
| 601 | exynos_gem_obj = to_exynos_gem_obj(obj); |
| 602 | |
| 603 | ret = check_gem_flags(exynos_gem_obj->flags); |
| 604 | if (ret) { |
| 605 | drm_gem_vm_close(vma); |
| 606 | drm_gem_free_mmap_offset(obj); |
| 607 | return ret; |
| 608 | } |
| 609 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 610 | vma->vm_flags &= ~VM_PFNMAP; |
| 611 | vma->vm_flags |= VM_MIXEDMAP; |
| 612 | |
Inki Dae | c01d73fa | 2012-04-23 19:26:34 +0900 | [diff] [blame] | 613 | update_vm_cache_attr(exynos_gem_obj, vma); |
| 614 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 615 | return ret; |
| 616 | } |