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_screen.h"
  34 #include "vmw_surface.h"
  35 #include "vmw_fence.h"
  36 #include "vmw_context.h"
  37 #include "svga_drm_public.h"
  38
  39 #include "state_tracker/drm_driver.h"
  40
  41 #include "vmwgfx_drm.h"
  42 #include <xf86drm.h>
  43
  44 #include <stdio.h>
  45
  46 struct dri1_api_version {
  47    int major;
  48    int minor;
  49    int patch_level;
  50 };
  51
  52 static struct svga_winsys_surface *
  53 vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
  54                             struct winsys_handle *whandle,
  55                             SVGA3dSurfaceFormat *format);
  56 static boolean
  57 vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
  58                            struct svga_winsys_surface *surface,
  59                            unsigned stride,
  60                            struct winsys_handle *whandle);
  61
  62 static struct dri1_api_version drm_required = { 1, 0, 0 };
  63 static struct dri1_api_version drm_compat = { 1, 0, 0 };
  64 static struct dri1_api_version drm_scanout = { 0, 9, 0 };
  65
  66 static boolean
  67 vmw_dri1_check_version(const struct dri1_api_version *cur,
  68                        const struct dri1_api_version *required,
  69                        const struct dri1_api_version *compat,
  70                        const char component[])
  71 {
  72    if (cur->major > required->major && cur->major <= compat->major)
  73       return TRUE;
  74    if (cur->major == required->major && cur->minor >= required->minor)
  75       return TRUE;
  76
  77    fprintf(stderr, "%s version failure.\n", component);
  78    fprintf(stderr, "%s version is %d.%d.%d and this driver can only work\n"
  79            "with versions %d.%d.x through %d.x.x.\n",
  80            component,
  81            cur->major,
  82            cur->minor,
  83            cur->patch_level, required->major, required->minor, compat->major);
  84    return FALSE;
  85 }
  86
  87 /* This is actually the entrypoint to the entire driver,
  88  * called by the target bootstrap code.
  89  */
  90 struct svga_winsys_screen *
  91 svga_drm_winsys_screen_create(int fd)
  92 {
  93    struct vmw_winsys_screen *vws;
  94    boolean use_old_scanout_flag = FALSE;
  95
  96    struct dri1_api_version drm_ver;
  97    drmVersionPtr ver;
  98
  99    ver = drmGetVersion(fd);
 100    if (ver == NULL)
 101       return NULL;
 102
 103    drm_ver.major = ver->version_major;
 104    drm_ver.minor = ver->version_minor;
 105    drm_ver.patch_level = 0; /* ??? */
 106
 107    drmFreeVersion(ver);
 108    if (!vmw_dri1_check_version(&drm_ver, &drm_required,
 109                                &drm_compat, "vmwgfx drm driver"))
 110       return NULL;
 111
 112    if (!vmw_dri1_check_version(&drm_ver, &drm_scanout,
 113                                &drm_compat, "use old scanout field (not a error)"))
 114       use_old_scanout_flag = TRUE;
 115
 116    vws = vmw_winsys_create( fd, use_old_scanout_flag );
 117    if (!vws)
 118       goto out_no_vws;
 119
 120    /* XXX do this properly */
 121    vws->base.surface_from_handle = vmw_drm_surface_from_handle;
 122    vws->base.surface_get_handle = vmw_drm_surface_get_handle;
 123
 124    return &vws->base;
 125
 126 out_no_vws:
 127    return NULL;
 128 }
 129
 130 static INLINE boolean
 131 vmw_dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 132                             int dst_x,
 133                             int dst_y,
 134                             const struct drm_clip_rect *src,
 135                             const struct drm_clip_rect *bbox)
 136 {
 137    int xy1;
 138    int xy2;
 139
 140    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 141       (int)bbox->x1 + dst_x;
 142    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 143       (int)bbox->x2 + dst_x;
 144    if (xy1 >= xy2 || xy1 < 0)
 145       return FALSE;
 146
 147    dst->x1 = xy1;
 148    dst->x2 = xy2;
 149
 150    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 151       (int)bbox->y1 + dst_y;
 152    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 153       (int)bbox->y2 + dst_y;
 154    if (xy1 >= xy2 || xy1 < 0)
 155       return FALSE;
 156
 157    dst->y1 = xy1;
 158    dst->y2 = xy2;
 159    return TRUE;
 160 }
 161
 162 static struct svga_winsys_surface *
 163 vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
 164                             struct winsys_handle *whandle,
 165                             SVGA3dSurfaceFormat *format)
 166 {
 167     struct vmw_svga_winsys_surface *vsrf;
 168     struct svga_winsys_surface *ssrf;
 169     struct vmw_winsys_screen *vws = vmw_winsys_screen(sws);
 170     union drm_vmw_surface_reference_arg arg;
 171     struct drm_vmw_surface_arg *req = &arg.req;
 172     struct drm_vmw_surface_create_req *rep = &arg.rep;
 173     int ret;
 174     int i;
 175
 176     /**
 177      * The vmware device specific handle is the hardware SID.
 178      * FIXME: We probably want to move this to the ioctl implementations.
 179      */
 180
 181     memset(&arg, 0, sizeof(arg));
 182     req->sid = whandle->handle;
 183
 184     ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_REF_SURFACE,
 185                               &arg, sizeof(arg));
 186
 187     if (ret) {
 188         fprintf(stderr, "Failed referencing shared surface. SID %d.\n"
 189                 "Error %d (%s).\n",
 190                 whandle->handle, ret, strerror(-ret));
 191         return NULL;
 192     }
 193
 194     if (rep->mip_levels[0] != 1) {
 195         fprintf(stderr, "Incorrect number of mipmap levels on shared surface."
 196                 " SID %d, levels %d\n",
 197                 whandle->handle, rep->mip_levels[0]);
 198         goto out_mip;
 199     }
 200
 201     for (i=1; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
 202         if (rep->mip_levels[i] != 0) {
 203             fprintf(stderr, "Incorrect number of faces levels on shared surface."
 204                     " SID %d, face %d present.\n",
 205                     whandle->handle, i);
 206             goto out_mip;
 207         }
 208    }
 209
 210     vsrf = CALLOC_STRUCT(vmw_svga_winsys_surface);
 211     if (!vsrf)
 212         goto out_mip;
 213
 214     pipe_reference_init(&vsrf->refcnt, 1);
 215     p_atomic_set(&vsrf->validated, 0);
 216     vsrf->screen = vws;
 217     vsrf->sid = whandle->handle;
 218     ssrf = svga_winsys_surface(vsrf);
 219     *format = rep->format;
 220
 221     return ssrf;
 222
 223 out_mip:
 224     vmw_ioctl_surface_destroy(vws, whandle->handle);
 225     return NULL;
 226 }
 227
 228 static boolean
 229 vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
 230                            struct svga_winsys_surface *surface,
 231                            unsigned stride,
 232                            struct winsys_handle *whandle)
 233 {
 234     struct vmw_svga_winsys_surface *vsrf;
 235
 236     if (!surface)
 237         return FALSE;
 238
 239     vsrf = vmw_svga_winsys_surface(surface);
 240     whandle->handle = vsrf->sid;
 241     whandle->stride = stride;
 242
 243     return TRUE;
 244 }