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