1/*- 2 *Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 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 "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 * Authors: 26 * Rickard E. (Rik) Faith <faith@valinux.com> 27 * Gareth Hughes <gareth@valinux.com> 28 * 29 */ 30 31/** @file drm_memory.c 32 * Wrappers for kernel memory allocation routines, and MTRR management support. 33 * 34 * This file previously implemented a memory consumption tracking system using 35 * the "area" argument for various different types of allocations, but that 36 * has been stripped out for now. 37 */ 38 39#include "drmP.h" 40 41#if defined(__NetBSD__) 42# ifdef DRM_NO_AGP 43# define NAGP_I810 0 44# else 45# if defined(_KERNEL_OPT) 46# include "agp_i810.h" 47# include "genfb.h" 48# else 49# define NAGP_I810 1 50# define NGENFB 0 51# endif 52# endif 53# if NAGP_I810 > 0 54# include <dev/pci/agpvar.h> 55# endif 56# if NGENFB > 0 57# include <dev/wsfb/genfbvar.h> 58# endif 59#endif 60 61MALLOC_DEFINE(DRM_MEM_DMA, "drm_dma", "DRM DMA Data Structures"); 62MALLOC_DEFINE(DRM_MEM_SAREA, "drm_sarea", "DRM SAREA Data Structures"); 63MALLOC_DEFINE(DRM_MEM_DRIVER, "drm_driver", "DRM DRIVER Data Structures"); 64MALLOC_DEFINE(DRM_MEM_MAGIC, "drm_magic", "DRM MAGIC Data Structures"); 65MALLOC_DEFINE(DRM_MEM_IOCTLS, "drm_ioctls", "DRM IOCTL Data Structures"); 66MALLOC_DEFINE(DRM_MEM_MAPS, "drm_maps", "DRM MAP Data Structures"); 67MALLOC_DEFINE(DRM_MEM_BUFS, "drm_bufs", "DRM BUFFER Data Structures"); 68MALLOC_DEFINE(DRM_MEM_SEGS, "drm_segs", "DRM SEGMENTS Data Structures"); 69MALLOC_DEFINE(DRM_MEM_PAGES, "drm_pages", "DRM PAGES Data Structures"); 70MALLOC_DEFINE(DRM_MEM_FILES, "drm_files", "DRM FILE Data Structures"); 71MALLOC_DEFINE(DRM_MEM_QUEUES, "drm_queues", "DRM QUEUE Data Structures"); 72MALLOC_DEFINE(DRM_MEM_CMDS, "drm_cmds", "DRM COMMAND Data Structures"); 73MALLOC_DEFINE(DRM_MEM_MAPPINGS, "drm_mapping", "DRM MAPPING Data Structures"); 74MALLOC_DEFINE(DRM_MEM_BUFLISTS, "drm_buflists", "DRM BUFLISTS Data Structures"); 75MALLOC_DEFINE(DRM_MEM_AGPLISTS, "drm_agplists", "DRM AGPLISTS Data Structures"); 76MALLOC_DEFINE(DRM_MEM_CTXBITMAP, "drm_ctxbitmap", 77 "DRM CTXBITMAP Data Structures"); 78MALLOC_DEFINE(DRM_MEM_SGLISTS, "drm_sglists", "DRM SGLISTS Data Structures"); 79MALLOC_DEFINE(DRM_MEM_DRAWABLE, "drm_drawable", "DRM DRAWABLE Data Structures"); 80MALLOC_DEFINE(DRM_MEM_MM, "drm_mm", "DRM MM Data Structures"); 81 82void drm_mem_init(void) 83{ 84} 85 86void drm_mem_uninit(void) 87{ 88} 89 90#if defined(__NetBSD__) 91static void * 92drm_netbsd_ioremap(struct drm_device *dev, drm_local_map_t *map, int wc) 93{ 94 bus_space_handle_t h; 95 int i, reg, reason; 96 for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) { 97 reg = PCI_MAPREG_START + i*4; 98 99 /* Does the requested mapping lie within this resource? */ 100 if ((dev->pci_map_data[i].maptype == PCI_MAPREG_TYPE_MEM || 101 dev->pci_map_data[i].maptype == 102 (PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT)) && 103 map->offset >= dev->pci_map_data[i].base && 104 map->offset + map->size <= dev->pci_map_data[i].base + 105 dev->pci_map_data[i].size) 106 { 107 map->bst = dev->pa.pa_memt; 108 map->fullmap = &(dev->pci_map_data[i]); 109 map->mapsize = map->size; 110 dev->pci_map_data[i].mapped++; 111 112 /* If we've already mapped this resource in, handle 113 * submapping if needed, give caller a bus_space handle 114 * and pointer for the offest they asked for */ 115 if (dev->pci_map_data[i].mapped > 1) 116 { 117 if ((reason = bus_space_subregion( 118 dev->pa.pa_memt, 119 dev->pci_map_data[i].bsh, 120 map->offset - dev->pci_map_data[i].base, 121 map->size, &h)) != 0) { 122 DRM_DEBUG("ioremap failed to " 123 "bus_space_subregion: %d\n", 124 reason); 125 return NULL; 126 } 127 map->bsh = h; 128 map->handle = bus_space_vaddr(dev->pa.pa_memt, 129 h); 130 return map->handle; 131 } 132 133 /* Map in entirety of resource - full size and handle 134 * go in pci_map_data, specific mapping in callers 135 * drm_local_map_t */ 136 DRM_DEBUG("ioremap%s: flags %d\n", wc ? "_wc" : "", 137 dev->pci_map_data[i].flags); 138 if ((reason = bus_space_map(map->bst, 139 dev->pci_map_data[i].base, 140 dev->pci_map_data[i].size, 141 dev->pci_map_data[i].flags, 142 &dev->pci_map_data[i].bsh))) 143 { 144 dev->pci_map_data[i].mapped--; 145#if NAGP_I810 > 0 /* XXX horrible kludge: agp might have mapped it */ 146 if (agp_i810_borrow(map->offset, &map->bsh)) 147 return bus_space_vaddr(map->bst, map->bsh); 148#endif 149#if NGENFB > 0 150 if (genfb_borrow(map->offset, &map->bsh)) 151 return bus_space_vaddr(map->bst, map->bsh); 152#endif 153 DRM_DEBUG("ioremap: failed to map (%d)\n", 154 reason); 155 return NULL; 156 } 157 158 dev->pci_map_data[i].vaddr = bus_space_vaddr(map->bst, 159 dev->pci_map_data[i].bsh); 160 161 /* Caller might have requested a submapping of that */ 162 if ((reason = bus_space_subregion( 163 dev->pa.pa_memt, 164 dev->pci_map_data[i].bsh, 165 map->offset - dev->pci_map_data[i].base, 166 map->size, &h)) != 0) { 167 DRM_DEBUG("ioremap failed to " 168 "bus_space_subregion: %d\n", 169 reason); 170 return NULL; 171 } 172 173 DRM_DEBUG("ioremap mem found for %lx, %lx: %p\n", 174 map->offset, map->size, 175 dev->agp_map_data[i].vaddr); 176 177 map->bsh = h; 178 map->handle = bus_space_vaddr(dev->pa.pa_memt, h); 179 return map->handle; 180 } 181 } 182 /* failed to find a valid mapping; all hope isn't lost though */ 183 for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) { 184 if (dev->agp_map_data[i].mapped > 0 && 185 dev->agp_map_data[i].base == map->offset && 186 dev->agp_map_data[i].size >= map->size) { 187 map->bst = dev->pa.pa_memt; 188 map->fullmap = &(dev->agp_map_data[i]); 189 map->mapsize = dev->agp_map_data[i].size; 190 dev->agp_map_data[i].mapped++; 191 map->bsh = dev->agp_map_data[i].bsh; 192 return dev->agp_map_data[i].vaddr; 193 } 194 if (dev->agp_map_data[i].mapped == 0) { 195 int rv; 196 197 map->bst = dev->pa.pa_memt; 198 dev->agp_map_data[i].mapped++; 199 dev->agp_map_data[i].base = map->offset; 200 dev->agp_map_data[i].size = map->size; 201 dev->agp_map_data[i].flags = BUS_SPACE_MAP_LINEAR | 202 BUS_SPACE_MAP_PREFETCHABLE; 203 dev->agp_map_data[i].maptype = PCI_MAPREG_TYPE_MEM; 204 map->fullmap = &(dev->agp_map_data[i]); 205 map->mapsize = dev->agp_map_data[i].size; 206 207 DRM_DEBUG("ioremap%s: flags %d\n", wc ? "_wc" : "", 208 dev->agp_map_data[i].flags); 209 rv = bus_space_map(map->bst, map->offset, 210 dev->agp_map_data[i].size, 211 dev->agp_map_data[i].flags, &map->bsh); 212 if (rv) { 213 dev->agp_map_data[i].mapped--; 214 DRM_DEBUG("ioremap: failed to map (%d)\n", rv); 215 return NULL; 216 } 217 dev->agp_map_data[i].bsh = map->bsh; 218 dev->agp_map_data[i].vaddr = 219 bus_space_vaddr(map->bst, map->bsh); 220 DRM_DEBUG("ioremap agp mem found for %lx, %lx: %p\n", 221 map->offset, map->size, 222 dev->agp_map_data[i].vaddr); 223 return dev->agp_map_data[i].vaddr; 224 } 225 } 226 227 /* now we can give up... */ 228 DRM_DEBUG("drm_ioremap failed: offset=%lx size=%lu\n", 229 map->offset, map->size); 230 return NULL; 231} 232#endif 233 234void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map) 235{ 236#if defined(__FreeBSD__) 237 return pmap_mapdev_attr(map->offset, map->size, PAT_WRITE_COMBINING); 238#elif defined(__NetBSD__) 239 return drm_netbsd_ioremap(dev, map, 1); 240#endif 241} 242 243void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map) 244{ 245#if defined(__FreeBSD__) 246 return pmap_mapdev(map->offset, map->size); 247#elif defined(__NetBSD__) 248 return drm_netbsd_ioremap(dev, map, 0); 249#endif 250} 251 252void drm_ioremapfree(drm_local_map_t *map) 253{ 254#if defined(__FreeBSD__) 255 pmap_unmapdev((vm_offset_t) map->handle, map->size); 256#elif defined(__NetBSD__) 257 if (map->fullmap == NULL) { 258 DRM_INFO("drm_ioremapfree called for unknown map\n"); 259 return; 260 } 261 262 if (map->fullmap->mapped > 0) { 263 map->fullmap->mapped--; 264 if(map->fullmap->mapped == 0) 265 bus_space_unmap(map->bst, map->fullmap->bsh, 266 map->fullmap->size); 267 } 268#endif 269} 270 271#if defined(__FreeBSD__) 272int 273drm_mtrr_add(unsigned long offset, size_t size, int flags) 274{ 275 int act; 276 struct mem_range_desc mrdesc; 277 278 mrdesc.mr_base = offset; 279 mrdesc.mr_len = size; 280 mrdesc.mr_flags = flags; 281 act = MEMRANGE_SET_UPDATE; 282 strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner)); 283 return mem_range_attr_set(&mrdesc, &act); 284} 285 286int 287drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags) 288{ 289 int act; 290 struct mem_range_desc mrdesc; 291 292 mrdesc.mr_base = offset; 293 mrdesc.mr_len = size; 294 mrdesc.mr_flags = flags; 295 act = MEMRANGE_SET_REMOVE; 296 strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner)); 297 return mem_range_attr_set(&mrdesc, &act); 298} 299#elif defined(__NetBSD__) 300int 301drm_mtrr_add(unsigned long offset, size_t size, int flags) 302{ 303#ifdef MTRR_GETSET_KERNEL 304 struct mtrr mtrrmap; 305 int one = 1; 306 307 mtrrmap.base = offset; 308 mtrrmap.len = size; 309 mtrrmap.type = flags; 310 mtrrmap.flags = MTRR_VALID; 311 return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); 312#else 313 return 0; 314#endif 315} 316 317int 318drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags) 319{ 320#ifdef MTRR_GETSET_KERNEL 321 struct mtrr mtrrmap; 322 int one = 1; 323 324 mtrrmap.base = offset; 325 mtrrmap.len = size; 326 mtrrmap.type = flags; 327 mtrrmap.flags = 0; 328 return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); 329#else 330 return 0; 331#endif 332} 333#endif 334