vmw_screen_dri.c revision 3f28dbd9bb78f03681005cafa115008595b3c27d 
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
43struct dri1_api_version {
44   int major;
45   int minor;
46   int patch_level;
47};
48
49static struct svga_winsys_surface *
50vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
51			    struct winsys_handle *whandle,
52			    SVGA3dSurfaceFormat *format);
53static boolean
54vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
55			   struct svga_winsys_surface *surface,
56			   unsigned stride,
57			   struct winsys_handle *whandle);
58
59static struct dri1_api_version drm_required = { 1, 0, 0 };
60static struct dri1_api_version drm_compat = { 1, 0, 0 };
61static struct dri1_api_version drm_scanout = { 0, 9, 0 };
62
63static boolean
64vmw_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 */
87struct svga_winsys_screen *
88svga_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
123out_no_vws:
124   return NULL;
125}
126
127static INLINE boolean
128vmw_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
159static struct svga_winsys_surface *
160vmw_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
220out_mip:
221    vmw_ioctl_surface_destroy(vws, whandle->handle);
222    return NULL;
223}
224
225static boolean
226vmw_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}
242