1/************************************************************************** 2 * 3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "vmwgfx_drv.h" 29#include "ttm/ttm_bo_driver.h" 30#include "ttm/ttm_placement.h" 31#include "ttm/ttm_page_alloc.h" 32 33static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM | 34 TTM_PL_FLAG_CACHED; 35 36static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM | 37 TTM_PL_FLAG_CACHED | 38 TTM_PL_FLAG_NO_EVICT; 39 40static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM | 41 TTM_PL_FLAG_CACHED; 42 43static uint32_t gmr_placement_flags = VMW_PL_FLAG_GMR | 44 TTM_PL_FLAG_CACHED; 45 46static uint32_t gmr_ne_placement_flags = VMW_PL_FLAG_GMR | 47 TTM_PL_FLAG_CACHED | 48 TTM_PL_FLAG_NO_EVICT; 49 50struct ttm_placement vmw_vram_placement = { 51 .fpfn = 0, 52 .lpfn = 0, 53 .num_placement = 1, 54 .placement = &vram_placement_flags, 55 .num_busy_placement = 1, 56 .busy_placement = &vram_placement_flags 57}; 58 59static uint32_t vram_gmr_placement_flags[] = { 60 TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED, 61 VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED 62}; 63 64static uint32_t gmr_vram_placement_flags[] = { 65 VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED, 66 TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED 67}; 68 69struct ttm_placement vmw_vram_gmr_placement = { 70 .fpfn = 0, 71 .lpfn = 0, 72 .num_placement = 2, 73 .placement = vram_gmr_placement_flags, 74 .num_busy_placement = 1, 75 .busy_placement = &gmr_placement_flags 76}; 77 78static uint32_t vram_gmr_ne_placement_flags[] = { 79 TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT, 80 VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT 81}; 82 83struct ttm_placement vmw_vram_gmr_ne_placement = { 84 .fpfn = 0, 85 .lpfn = 0, 86 .num_placement = 2, 87 .placement = vram_gmr_ne_placement_flags, 88 .num_busy_placement = 1, 89 .busy_placement = &gmr_ne_placement_flags 90}; 91 92struct ttm_placement vmw_vram_sys_placement = { 93 .fpfn = 0, 94 .lpfn = 0, 95 .num_placement = 1, 96 .placement = &vram_placement_flags, 97 .num_busy_placement = 1, 98 .busy_placement = &sys_placement_flags 99}; 100 101struct ttm_placement vmw_vram_ne_placement = { 102 .fpfn = 0, 103 .lpfn = 0, 104 .num_placement = 1, 105 .placement = &vram_ne_placement_flags, 106 .num_busy_placement = 1, 107 .busy_placement = &vram_ne_placement_flags 108}; 109 110struct ttm_placement vmw_sys_placement = { 111 .fpfn = 0, 112 .lpfn = 0, 113 .num_placement = 1, 114 .placement = &sys_placement_flags, 115 .num_busy_placement = 1, 116 .busy_placement = &sys_placement_flags 117}; 118 119static uint32_t evictable_placement_flags[] = { 120 TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED, 121 TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED, 122 VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED 123}; 124 125struct ttm_placement vmw_evictable_placement = { 126 .fpfn = 0, 127 .lpfn = 0, 128 .num_placement = 3, 129 .placement = evictable_placement_flags, 130 .num_busy_placement = 1, 131 .busy_placement = &sys_placement_flags 132}; 133 134struct ttm_placement vmw_srf_placement = { 135 .fpfn = 0, 136 .lpfn = 0, 137 .num_placement = 1, 138 .num_busy_placement = 2, 139 .placement = &gmr_placement_flags, 140 .busy_placement = gmr_vram_placement_flags 141}; 142 143struct vmw_ttm_tt { 144 struct ttm_tt ttm; 145 struct vmw_private *dev_priv; 146 int gmr_id; 147}; 148 149static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) 150{ 151 struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, ttm); 152 153 vmw_be->gmr_id = bo_mem->start; 154 155 return vmw_gmr_bind(vmw_be->dev_priv, ttm->pages, 156 ttm->num_pages, vmw_be->gmr_id); 157} 158 159static int vmw_ttm_unbind(struct ttm_tt *ttm) 160{ 161 struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, ttm); 162 163 vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id); 164 return 0; 165} 166 167static void vmw_ttm_destroy(struct ttm_tt *ttm) 168{ 169 struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, ttm); 170 171 ttm_tt_fini(ttm); 172 kfree(vmw_be); 173} 174 175static struct ttm_backend_func vmw_ttm_func = { 176 .bind = vmw_ttm_bind, 177 .unbind = vmw_ttm_unbind, 178 .destroy = vmw_ttm_destroy, 179}; 180 181struct ttm_tt *vmw_ttm_tt_create(struct ttm_bo_device *bdev, 182 unsigned long size, uint32_t page_flags, 183 struct page *dummy_read_page) 184{ 185 struct vmw_ttm_tt *vmw_be; 186 187 vmw_be = kmalloc(sizeof(*vmw_be), GFP_KERNEL); 188 if (!vmw_be) 189 return NULL; 190 191 vmw_be->ttm.func = &vmw_ttm_func; 192 vmw_be->dev_priv = container_of(bdev, struct vmw_private, bdev); 193 194 if (ttm_tt_init(&vmw_be->ttm, bdev, size, page_flags, dummy_read_page)) { 195 kfree(vmw_be); 196 return NULL; 197 } 198 199 return &vmw_be->ttm; 200} 201 202int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) 203{ 204 return 0; 205} 206 207int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, 208 struct ttm_mem_type_manager *man) 209{ 210 switch (type) { 211 case TTM_PL_SYSTEM: 212 /* System memory */ 213 214 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; 215 man->available_caching = TTM_PL_FLAG_CACHED; 216 man->default_caching = TTM_PL_FLAG_CACHED; 217 break; 218 case TTM_PL_VRAM: 219 /* "On-card" video ram */ 220 man->func = &ttm_bo_manager_func; 221 man->gpu_offset = 0; 222 man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE; 223 man->available_caching = TTM_PL_FLAG_CACHED; 224 man->default_caching = TTM_PL_FLAG_CACHED; 225 break; 226 case VMW_PL_GMR: 227 /* 228 * "Guest Memory Regions" is an aperture like feature with 229 * one slot per bo. There is an upper limit of the number of 230 * slots as well as the bo size. 231 */ 232 man->func = &vmw_gmrid_manager_func; 233 man->gpu_offset = 0; 234 man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE; 235 man->available_caching = TTM_PL_FLAG_CACHED; 236 man->default_caching = TTM_PL_FLAG_CACHED; 237 break; 238 default: 239 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); 240 return -EINVAL; 241 } 242 return 0; 243} 244 245void vmw_evict_flags(struct ttm_buffer_object *bo, 246 struct ttm_placement *placement) 247{ 248 *placement = vmw_sys_placement; 249} 250 251/** 252 * FIXME: Proper access checks on buffers. 253 */ 254 255static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp) 256{ 257 return 0; 258} 259 260static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) 261{ 262 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; 263 struct vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev); 264 265 mem->bus.addr = NULL; 266 mem->bus.is_iomem = false; 267 mem->bus.offset = 0; 268 mem->bus.size = mem->num_pages << PAGE_SHIFT; 269 mem->bus.base = 0; 270 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) 271 return -EINVAL; 272 switch (mem->mem_type) { 273 case TTM_PL_SYSTEM: 274 case VMW_PL_GMR: 275 return 0; 276 case TTM_PL_VRAM: 277 mem->bus.offset = mem->start << PAGE_SHIFT; 278 mem->bus.base = dev_priv->vram_start; 279 mem->bus.is_iomem = true; 280 break; 281 default: 282 return -EINVAL; 283 } 284 return 0; 285} 286 287static void vmw_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) 288{ 289} 290 291static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo) 292{ 293 return 0; 294} 295 296/** 297 * FIXME: We're using the old vmware polling method to sync. 298 * Do this with fences instead. 299 */ 300 301static void *vmw_sync_obj_ref(void *sync_obj) 302{ 303 304 return (void *) 305 vmw_fence_obj_reference((struct vmw_fence_obj *) sync_obj); 306} 307 308static void vmw_sync_obj_unref(void **sync_obj) 309{ 310 vmw_fence_obj_unreference((struct vmw_fence_obj **) sync_obj); 311} 312 313static int vmw_sync_obj_flush(void *sync_obj, void *sync_arg) 314{ 315 vmw_fence_obj_flush((struct vmw_fence_obj *) sync_obj); 316 return 0; 317} 318 319static bool vmw_sync_obj_signaled(void *sync_obj, void *sync_arg) 320{ 321 unsigned long flags = (unsigned long) sync_arg; 322 return vmw_fence_obj_signaled((struct vmw_fence_obj *) sync_obj, 323 (uint32_t) flags); 324 325} 326 327static int vmw_sync_obj_wait(void *sync_obj, void *sync_arg, 328 bool lazy, bool interruptible) 329{ 330 unsigned long flags = (unsigned long) sync_arg; 331 332 return vmw_fence_obj_wait((struct vmw_fence_obj *) sync_obj, 333 (uint32_t) flags, 334 lazy, interruptible, 335 VMW_FENCE_WAIT_TIMEOUT); 336} 337 338struct ttm_bo_driver vmw_bo_driver = { 339 .ttm_tt_create = &vmw_ttm_tt_create, 340 .ttm_tt_populate = &ttm_pool_populate, 341 .ttm_tt_unpopulate = &ttm_pool_unpopulate, 342 .invalidate_caches = vmw_invalidate_caches, 343 .init_mem_type = vmw_init_mem_type, 344 .evict_flags = vmw_evict_flags, 345 .move = NULL, 346 .verify_access = vmw_verify_access, 347 .sync_obj_signaled = vmw_sync_obj_signaled, 348 .sync_obj_wait = vmw_sync_obj_wait, 349 .sync_obj_flush = vmw_sync_obj_flush, 350 .sync_obj_unref = vmw_sync_obj_unref, 351 .sync_obj_ref = vmw_sync_obj_ref, 352 .move_notify = NULL, 353 .swap_notify = NULL, 354 .fault_reserve_notify = &vmw_ttm_fault_reserve_notify, 355 .io_mem_reserve = &vmw_ttm_io_mem_reserve, 356 .io_mem_free = &vmw_ttm_io_mem_free, 357}; 358