src/gallium/winsys/svga/drm/vmw_screen_dri.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 #include "pipe/p_compiler.h"
  28 #include "util/u_inlines.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_format.h"
  31 #include "vmw_screen.h"
  32
  33 #include "vmw_surface.h"
  34 #include "svga_drm_public.h"
  35
  36 #include "state_tracker/drm_driver.h"
  37
  38 #include "vmwgfx_drm.h"
  39 #include <xf86drm.h>
  40
  41 #include <stdio.h>
  42
  43 struct dri1_api_version {
  44    int major;
  45    int minor;
  46    int patch_level;
  47 };
  48
  49 static struct svga_winsys_surface *
  50 vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
  51                             struct winsys_handle *whandle,
  52                             SVGA3dSurfaceFormat *format);
  53 static boolean
  54 vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
  55                            struct svga_winsys_surface *surface,
  56                            unsigned stride,
  57                            struct winsys_handle *whandle);
  58
  59 static struct dri1_api_version drm_required = { 1, 0, 0 };
  60 static struct dri1_api_version drm_compat = { 1, 0, 0 };
  61 static struct dri1_api_version drm_scanout = { 0, 9, 0 };
  62
  63 static boolean
  64 vmw_dri1_check_version(const struct dri1_api_version *cur,
  65                        const struct dri1_api_version *required,
  66                        const struct dri1_api_version *compat,
  67                        const char component[])
  68 {
  69    if (cur->major > required->major && cur->major <= compat->major)
  70       return TRUE;
  71    if (cur->major == required->major && cur->minor >= required->minor)
  72       return TRUE;
  73
  74    fprintf(stderr, "%s version failure.\n", component);
  75    fprintf(stderr, "%s version is %d.%d.%d and this driver can only work\n"
  76            "with versions %d.%d.x through %d.x.x.\n",
  77            component,
  78            cur->major,
  79            cur->minor,
  80            cur->patch_level, required->major, required->minor, compat->major);
  81    return FALSE;
  82 }
  83
  84 /* This is actually the entrypoint to the entire driver,
  85  * called by the target bootstrap code.
  86  */
  87 struct svga_winsys_screen *
  88 svga_drm_winsys_screen_create(int fd)
  89 {
  90    struct vmw_winsys_screen *vws;
  91    boolean use_old_scanout_flag = FALSE;
  92
  93    struct dri1_api_version drm_ver;
  94    drmVersionPtr ver;
  95
  96    ver = drmGetVersion(fd);
  97    if (ver == NULL)
  98       return NULL;
  99
 100    drm_ver.major = ver->version_major;
 101    drm_ver.minor = ver->version_minor;
 102    drm_ver.patch_level = 0; /* ??? */
 103
 104    drmFreeVersion(ver);
 105    if (!vmw_dri1_check_version(&drm_ver, &drm_required,
 106                                &drm_compat, "vmwgfx drm driver"))
 107       return NULL;
 108
 109    if (!vmw_dri1_check_version(&drm_ver, &drm_scanout,
 110                                &drm_compat, "use old scanout field (not a error)"))
 111       use_old_scanout_flag = TRUE;
 112
 113    vws = vmw_winsys_create( fd, use_old_scanout_flag );
 114    if (!vws)
 115       goto out_no_vws;
 116
 117    /* XXX do this properly */
 118    vws->base.surface_from_handle = vmw_drm_surface_from_handle;
 119    vws->base.surface_get_handle = vmw_drm_surface_get_handle;
 120
 121    return &vws->base;
 122
 123 out_no_vws:
 124    return NULL;
 125 }
 126
 127 static INLINE boolean
 128 vmw_dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 129                             int dst_x,
 130                             int dst_y,
 131                             const struct drm_clip_rect *src,
 132                             const struct drm_clip_rect *bbox)
 133 {
 134    int xy1;
 135    int xy2;
 136
 137    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 138       (int)bbox->x1 + dst_x;
 139    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 140       (int)bbox->x2 + dst_x;
 141    if (xy1 >= xy2 || xy1 < 0)
 142       return FALSE;
 143
 144    dst->x1 = xy1;
 145    dst->x2 = xy2;
 146
 147    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 148       (int)bbox->y1 + dst_y;
 149    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 150       (int)bbox->y2 + dst_y;
 151    if (xy1 >= xy2 || xy1 < 0)
 152       return FALSE;
 153
 154    dst->y1 = xy1;
 155    dst->y2 = xy2;
 156    return TRUE;
 157 }
 158
 159 static struct svga_winsys_surface *
 160 vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
 161                             struct winsys_handle *whandle,
 162                             SVGA3dSurfaceFormat *format)
 163 {
 164     struct vmw_svga_winsys_surface *vsrf;
 165     struct svga_winsys_surface *ssrf;
 166     struct vmw_winsys_screen *vws = vmw_winsys_screen(sws);
 167     union drm_vmw_surface_reference_arg arg;
 168     struct drm_vmw_surface_arg *req = &arg.req;
 169     struct drm_vmw_surface_create_req *rep = &arg.rep;
 170     int ret;
 171     int i;
 172
 173     /**
 174      * The vmware device specific handle is the hardware SID.
 175      * FIXME: We probably want to move this to the ioctl implementations.
 176      */
 177
 178     memset(&arg, 0, sizeof(arg));
 179     req->sid = whandle->handle;
 180
 181     ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_REF_SURFACE,
 182                               &arg, sizeof(arg));
 183
 184     if (ret) {
 185         fprintf(stderr, "Failed referencing shared surface. SID %d.\n"
 186                 "Error %d (%s).\n",
 187                 whandle->handle, ret, strerror(-ret));
 188         return NULL;
 189     }
 190
 191     if (rep->mip_levels[0] != 1) {
 192         fprintf(stderr, "Incorrect number of mipmap levels on shared surface."
 193                 " SID %d, levels %d\n",
 194                 whandle->handle, rep->mip_levels[0]);
 195         goto out_mip;
 196     }
 197
 198     for (i=1; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
 199         if (rep->mip_levels[i] != 0) {
 200             fprintf(stderr, "Incorrect number of faces levels on shared surface."
 201                     " SID %d, face %d present.\n",
 202                     whandle->handle, i);
 203             goto out_mip;
 204         }
 205    }
 206
 207     vsrf = CALLOC_STRUCT(vmw_svga_winsys_surface);
 208     if (!vsrf)
 209         goto out_mip;
 210
 211     pipe_reference_init(&vsrf->refcnt, 1);
 212     p_atomic_set(&vsrf->validated, 0);
 213     vsrf->screen = vws;
 214     vsrf->sid = whandle->handle;
 215     ssrf = svga_winsys_surface(vsrf);
 216     *format = rep->format;
 217
 218     return ssrf;
 219
 220 out_mip:
 221     vmw_ioctl_surface_destroy(vws, whandle->handle);
 222     return NULL;
 223 }
 224
 225 static boolean
 226 vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
 227                            struct svga_winsys_surface *surface,
 228                            unsigned stride,
 229                            struct winsys_handle *whandle)
 230 {
 231     struct vmw_svga_winsys_surface *vsrf;
 232
 233     if (!surface)
 234         return FALSE;
 235
 236     vsrf = vmw_svga_winsys_surface(surface);
 237     whandle->handle = vsrf->sid;
 238     whandle->stride = stride;
 239
 240     return TRUE;
 241 }