src/gallium/winsys/drm/vmware/core/vmw_screen_ioctl.c

   1 /**********************************************************
   2  * Copyright 2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 /**
  27  * @file
  28  *
  29  * Wrappers for DRM ioctl functionlaity used by the rest of the vmw
  30  * drm winsys.
  31  *
  32  * Based on svgaicd_escape.c
  33  */
  34
  35
  36 #include "svga_cmd.h"
  37 #include "util/u_memory.h"
  38 #include "util/u_math.h"
  39 #include "svgadump/svga_dump.h"
  40 #include "vmw_screen.h"
  41 #include "vmw_context.h"
  42 #include "xf86drm.h"
  43 #include "vmwgfx_drm.h"
  44
  45 #include <sys/mman.h>
  46 #include <errno.h>
  47 #include <unistd.h>
  48
  49 struct vmw_region
  50 {
  51    SVGAGuestPtr ptr;
  52    uint32_t handle;
  53    uint64_t map_handle;
  54    void *data;
  55    uint32_t map_count;
  56    int drm_fd;
  57    uint32_t size;
  58 };
  59
  60 /* XXX: This isn't a real hardware flag, but just a hack for kernel to
  61  * know about primary surfaces. In newer versions of the kernel
  62  * interface the driver uses a special field.
  63  */
  64 #define SVGA3D_SURFACE_HINT_SCANOUT (1 << 9)
  65
  66 static void
  67 vmw_check_last_cmd(struct vmw_winsys_screen *vws)
  68 {
  69    static uint32_t buffer[16384];
  70    struct drm_vmw_fifo_debug_arg arg;
  71    int ret;
  72
  73    return;
  74    memset(&arg, 0, sizeof(arg));
  75    arg.debug_buffer = (unsigned long)buffer;
  76    arg.debug_buffer_size = 65536;
  77
  78    ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_FIFO_DEBUG,
  79                              &arg, sizeof(arg));
  80
  81    if (ret) {
  82       debug_printf("%s Ioctl error: \"%s\".\n", __FUNCTION__, strerror(-ret));
  83       return;
  84    }
  85
  86    if (arg.did_not_fit) {
  87       debug_printf("%s Command did not fit completely.\n", __FUNCTION__);
  88    }
  89
  90    svga_dump_commands(buffer, arg.used_size);
  91 }
  92
  93 static void
  94 vmw_ioctl_fifo_unmap(struct vmw_winsys_screen *vws, void *mapping)
  95 {
  96    VMW_FUNC;
  97    (void)munmap(mapping, getpagesize());
  98 }
  99
 100
 101 static void *
 102 vmw_ioctl_fifo_map(struct vmw_winsys_screen *vws,
 103                    uint32_t fifo_offset )
 104 {
 105    void *map;
 106
 107    VMW_FUNC;
 108
 109    map = mmap(NULL, getpagesize(), PROT_READ, MAP_SHARED,
 110               vws->ioctl.drm_fd, fifo_offset);
 111
 112    if (map == MAP_FAILED) {
 113       debug_printf("Map failed %s\n", strerror(errno));
 114       return NULL;
 115    }
 116
 117    vmw_printf("Fifo (min) is 0x%08x\n", ((uint32_t *) map)[SVGA_FIFO_MIN]);
 118
 119    return map;
 120 }
 121
 122 uint32
 123 vmw_ioctl_context_create(struct vmw_winsys_screen *vws)
 124 {
 125    struct drm_vmw_context_arg c_arg;
 126    int ret;
 127
 128    VMW_FUNC;
 129
 130    ret = drmCommandRead(vws->ioctl.drm_fd, DRM_VMW_CREATE_CONTEXT,
 131                         &c_arg, sizeof(c_arg));
 132
 133    if (ret)
 134       return -1;
 135
 136    vmw_check_last_cmd(vws);
 137    vmw_printf("Context id is %d\n", c_arg.cid);
 138
 139    return c_arg.cid;
 140 }
 141
 142 void
 143 vmw_ioctl_context_destroy(struct vmw_winsys_screen *vws, uint32 cid)
 144 {
 145    struct drm_vmw_context_arg c_arg;
 146
 147    VMW_FUNC;
 148
 149    memset(&c_arg, 0, sizeof(c_arg));
 150    c_arg.cid = cid;
 151
 152    (void)drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_UNREF_CONTEXT,
 153                          &c_arg, sizeof(c_arg));
 154
 155    vmw_check_last_cmd(vws);
 156 }
 157
 158 uint32
 159 vmw_ioctl_surface_create(struct vmw_winsys_screen *vws,
 160                               SVGA3dSurfaceFlags flags,
 161                               SVGA3dSurfaceFormat format,
 162                               SVGA3dSize size,
 163                               uint32_t numFaces, uint32_t numMipLevels)
 164 {
 165    union drm_vmw_surface_create_arg s_arg;
 166    struct drm_vmw_surface_create_req *req = &s_arg.req;
 167    struct drm_vmw_surface_arg *rep = &s_arg.rep;
 168    struct drm_vmw_size sizes[DRM_VMW_MAX_SURFACE_FACES*
 169                              DRM_VMW_MAX_MIP_LEVELS];
 170    struct drm_vmw_size *cur_size;
 171    uint32_t iFace;
 172    uint32_t iMipLevel;
 173    int ret;
 174
 175    vmw_printf("%s flags %d format %d\n", __FUNCTION__, flags, format);
 176
 177    memset(&s_arg, 0, sizeof(s_arg));
 178    if (vws->use_old_scanout_flag &&
 179        (flags & SVGA3D_SURFACE_HINT_SCANOUT)) {
 180       req->flags = (uint32_t) flags;
 181       req->scanout = false;
 182    } else if (flags & SVGA3D_SURFACE_HINT_SCANOUT) {
 183       req->flags = (uint32_t) (flags & ~SVGA3D_SURFACE_HINT_SCANOUT);
 184       req->scanout = true;
 185    } else {
 186       req->flags = (uint32_t) flags;
 187       req->scanout = false;
 188    }
 189    req->format = (uint32_t) format;
 190    req->shareable = 1;
 191
 192    assert(numFaces * numMipLevels < DRM_VMW_MAX_SURFACE_FACES*
 193           DRM_VMW_MAX_MIP_LEVELS);
 194    cur_size = sizes;
 195    for (iFace = 0; iFace < numFaces; ++iFace) {
 196       SVGA3dSize mipSize = size;
 197
 198       req->mip_levels[iFace] = numMipLevels;
 199       for (iMipLevel = 0; iMipLevel < numMipLevels; ++iMipLevel) {
 200          cur_size->width = mipSize.width;
 201          cur_size->height = mipSize.height;
 202          cur_size->depth = mipSize.depth;
 203          mipSize.width = MAX2(mipSize.width >> 1, 1);
 204          mipSize.height = MAX2(mipSize.height >> 1, 1);
 205          mipSize.depth = MAX2(mipSize.depth >> 1, 1);
 206          cur_size++;
 207       }
 208    }
 209    for (iFace = numFaces; iFace < SVGA3D_MAX_SURFACE_FACES; ++iFace) {
 210       req->mip_levels[iFace] = 0;
 211    }
 212
 213    req->size_addr = (unsigned long)&sizes;
 214
 215    ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_CREATE_SURFACE,
 216                              &s_arg, sizeof(s_arg));
 217
 218    if (ret)
 219       return -1;
 220
 221    vmw_printf("Surface id is %d\n", rep->sid);
 222    vmw_check_last_cmd(vws);
 223
 224    return rep->sid;
 225 }
 226
 227 void
 228 vmw_ioctl_surface_destroy(struct vmw_winsys_screen *vws, uint32 sid)
 229 {
 230    struct drm_vmw_surface_arg s_arg;
 231
 232    VMW_FUNC;
 233
 234    memset(&s_arg, 0, sizeof(s_arg));
 235    s_arg.sid = sid;
 236
 237    (void)drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_UNREF_SURFACE,
 238                          &s_arg, sizeof(s_arg));
 239    vmw_check_last_cmd(vws);
 240
 241 }
 242
 243 void
 244 vmw_ioctl_command(struct vmw_winsys_screen *vws, void *commands, uint32_t size,
 245                        uint32_t * pfence)
 246 {
 247    struct drm_vmw_execbuf_arg arg;
 248    struct drm_vmw_fence_rep rep;
 249    int ret;
 250
 251 #ifdef DEBUG
 252    {
 253       static boolean firsttime = TRUE;
 254       static boolean debug = FALSE;
 255       static boolean skip = FALSE;
 256       if (firsttime) {
 257          debug = debug_get_bool_option("SVGA_DUMP_CMD", FALSE);
 258          skip = debug_get_bool_option("SVGA_SKIP_CMD", FALSE);
 259       }
 260       if (debug) {
 261          VMW_FUNC;
 262          svga_dump_commands(commands, size);
 263       }
 264       firsttime = FALSE;
 265       if (skip) {
 266          size = 0;
 267       }
 268    }
 269 #endif
 270
 271    memset(&arg, 0, sizeof(arg));
 272    memset(&rep, 0, sizeof(rep));
 273
 274    rep.error = -EFAULT;
 275    arg.fence_rep = (unsigned long)&rep;
 276    arg.commands = (unsigned long)commands;
 277    arg.command_size = size;
 278
 279    do {
 280        ret = drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg));
 281    } while(ret == -ERESTART);
 282    if (ret) {
 283       debug_printf("%s error %s.\n", __FUNCTION__, strerror(-ret));
 284    }
 285    if (rep.error) {
 286
 287       /*
 288        * Kernel has synced and put the last fence sequence in the FIFO
 289        * register.
 290        */
 291
 292       if (rep.error == -EFAULT)
 293          rep.fence_seq = vws->ioctl.fifo_map[SVGA_FIFO_FENCE];
 294
 295       debug_printf("%s Fence error %s.\n", __FUNCTION__,
 296                    strerror(-rep.error));
 297    }
 298
 299    vws->ioctl.last_fence = rep.fence_seq;
 300
 301    if (pfence)
 302       *pfence = rep.fence_seq;
 303    vmw_check_last_cmd(vws);
 304
 305 }
 306
 307
 308 struct vmw_region *
 309 vmw_ioctl_region_create(struct vmw_winsys_screen *vws, uint32_t size)
 310 {
 311    struct vmw_region *region;
 312    union drm_vmw_alloc_dmabuf_arg arg;
 313    struct drm_vmw_alloc_dmabuf_req *req = &arg.req;
 314    struct drm_vmw_dmabuf_rep *rep = &arg.rep;
 315    int ret;
 316
 317    vmw_printf("%s: size = %u\n", __FUNCTION__, size);
 318
 319    region = CALLOC_STRUCT(vmw_region);
 320    if (!region)
 321       goto out_err1;
 322
 323    memset(&arg, 0, sizeof(arg));
 324    req->size = size;
 325    do {
 326       ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_ALLOC_DMABUF, &arg,
 327                                 sizeof(arg));
 328    } while (ret == -ERESTART);
 329
 330    if (ret) {
 331       debug_printf("IOCTL failed %d: %s\n", ret, strerror(-ret));
 332       goto out_err1;
 333    }
 334
 335    region->ptr.gmrId = rep->cur_gmr_id;
 336    region->ptr.offset = rep->cur_gmr_offset;
 337    region->data = NULL;
 338    region->handle = rep->handle;
 339    region->map_handle = rep->map_handle;
 340    region->map_count = 0;
 341    region->size = size;
 342    region->drm_fd = vws->ioctl.drm_fd;
 343
 344    vmw_printf("   gmrId = %u, offset = %u\n",
 345               region->ptr.gmrId, region->ptr.offset);
 346
 347    return region;
 348
 349  out_err1:
 350    FREE(region);
 351    return NULL;
 352 }
 353
 354 void
 355 vmw_ioctl_region_destroy(struct vmw_region *region)
 356 {
 357    struct drm_vmw_unref_dmabuf_arg arg;
 358
 359    vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
 360               region->ptr.gmrId, region->ptr.offset);
 361
 362    if (region->data) {
 363       munmap(region->data, region->size);
 364       region->data = NULL;
 365    }
 366
 367    memset(&arg, 0, sizeof(arg));
 368    arg.handle = region->handle;
 369    drmCommandWrite(region->drm_fd, DRM_VMW_UNREF_DMABUF, &arg, sizeof(arg));
 370
 371    FREE(region);
 372 }
 373
 374 SVGAGuestPtr
 375 vmw_ioctl_region_ptr(struct vmw_region *region)
 376 {
 377    return region->ptr;
 378 }
 379
 380 void *
 381 vmw_ioctl_region_map(struct vmw_region *region)
 382 {
 383    void *map;
 384
 385    vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
 386               region->ptr.gmrId, region->ptr.offset);
 387
 388    if (region->data == NULL) {
 389       map = mmap(NULL, region->size, PROT_READ | PROT_WRITE, MAP_SHARED,
 390                  region->drm_fd, region->map_handle);
 391       if (map == MAP_FAILED) {
 392          debug_printf("%s: Map failed.\n", __FUNCTION__);
 393          return NULL;
 394       }
 395
 396       region->data = map;
 397    }
 398
 399    ++region->map_count;
 400
 401    return region->data;
 402 }
 403
 404 void
 405 vmw_ioctl_region_unmap(struct vmw_region *region)
 406 {
 407    vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
 408               region->ptr.gmrId, region->ptr.offset);
 409    --region->map_count;
 410 }
 411
 412
 413 int
 414 vmw_ioctl_fence_signalled(struct vmw_winsys_screen *vws,
 415                           uint32_t fence)
 416 {
 417    uint32_t expected;
 418    uint32_t current;
 419
 420    assert(fence);
 421    if(!fence)
 422       return 0;
 423
 424    expected = fence;
 425    current = vws->ioctl.fifo_map[SVGA_FIFO_FENCE];
 426
 427    if ((int32)(current - expected) >= 0)
 428       return 0; /* fence passed */
 429    else
 430       return -1;
 431 }
 432
 433
 434 static void
 435 vmw_ioctl_sync(struct vmw_winsys_screen *vws,
 436                     uint32_t fence)
 437 {
 438    uint32_t cur_fence;
 439    struct drm_vmw_fence_wait_arg arg;
 440    int ret;
 441
 442    vmw_printf("%s: fence = %lu\n", __FUNCTION__,
 443               (unsigned long)fence);
 444
 445    cur_fence = vws->ioctl.fifo_map[SVGA_FIFO_FENCE];
 446    vmw_printf("%s: Fence id read is 0x%08x\n", __FUNCTION__,
 447               (unsigned int)cur_fence);
 448
 449    if ((cur_fence - fence) < (1 << 24))
 450       return;
 451
 452    memset(&arg, 0, sizeof(arg));
 453    arg.sequence = fence;
 454
 455    do {
 456        ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_FENCE_WAIT, &arg,
 457                                  sizeof(arg));
 458    } while (ret == -ERESTART);
 459 }
 460
 461
 462 int
 463 vmw_ioctl_fence_finish(struct vmw_winsys_screen *vws,
 464                        uint32_t fence)
 465 {
 466    assert(fence);
 467
 468    if(fence) {
 469       if(vmw_ioctl_fence_signalled(vws, fence) != 0) {
 470          vmw_ioctl_sync(vws, fence);
 471       }
 472    }
 473
 474    return 0;
 475 }
 476
 477
 478 boolean
 479 vmw_ioctl_init(struct vmw_winsys_screen *vws)
 480 {
 481    struct drm_vmw_getparam_arg gp_arg;
 482    int ret;
 483
 484    VMW_FUNC;
 485
 486    memset(&gp_arg, 0, sizeof(gp_arg));
 487    gp_arg.param = DRM_VMW_PARAM_3D;
 488    ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_GET_PARAM,
 489                              &gp_arg, sizeof(gp_arg));
 490    if (ret || gp_arg.value == 0) {
 491       debug_printf("No 3D enabled (%i, %s)\n", ret, strerror(-ret));
 492       goto out_err1;
 493    }
 494
 495    memset(&gp_arg, 0, sizeof(gp_arg));
 496    gp_arg.param = DRM_VMW_PARAM_FIFO_OFFSET;
 497    ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_GET_PARAM,
 498                              &gp_arg, sizeof(gp_arg));
 499
 500    if (ret) {
 501       debug_printf("GET_PARAM on %d returned %d: %s\n",
 502                    vws->ioctl.drm_fd, ret, strerror(-ret));
 503       goto out_err1;
 504    }
 505
 506    vmw_printf("Offset to map is 0x%08llx\n",
 507               (unsigned long long)gp_arg.value);
 508
 509    vws->ioctl.fifo_map = vmw_ioctl_fifo_map(vws, gp_arg.value);
 510    if (vws->ioctl.fifo_map == NULL)
 511       goto out_err1;
 512
 513    vmw_printf("%s OK\n", __FUNCTION__);
 514    return TRUE;
 515
 516  out_err1:
 517    debug_printf("%s Failed\n", __FUNCTION__);
 518    return FALSE;
 519 }
 520
 521
 522
 523 void
 524 vmw_ioctl_cleanup(struct vmw_winsys_screen *vws)
 525 {
 526    VMW_FUNC;
 527
 528    vmw_ioctl_fifo_unmap(vws, (void *)vws->ioctl.fifo_map);
 529 }