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spice: allow to specify drm rendernode 

When multiple GPU are available, picking the first one isn't always the
best choice. Learn to specify a device rendernode.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20170212112118.16044-1-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-02-12 15:21:18 +04:00 committed by Gerd Hoffmann
parent ad584d37f2
commit 7b5255083b
4 changed files with 17 additions and 7 deletions
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3
include/ui/egl-helpers.h
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@ -14,8 +14,7 @@ extern int qemu_egl_rn_fd;
extern struct gbm_device *qemu_egl_rn_gbm_dev; extern struct gbm_device *qemu_egl_rn_gbm_dev;
extern EGLContext qemu_egl_rn_ctx; extern EGLContext qemu_egl_rn_ctx;
int qemu_egl_rendernode_open(void); int egl_rendernode_init(const char *rendernode);
int egl_rendernode_init(void);
int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc); int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc);
#endif #endif

6
qemu-options.hx
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@ -1066,7 +1066,7 @@ DEF("spice", HAS_ARG, QEMU_OPTION_spice,
" [,streaming-video=[off|all|filter]][,disable-copy-paste]\n" " [,streaming-video=[off|all|filter]][,disable-copy-paste]\n"
" [,disable-agent-file-xfer][,agent-mouse=[on|off]]\n" " [,disable-agent-file-xfer][,agent-mouse=[on|off]]\n"
" [,playback-compression=[on|off]][,seamless-migration=[on|off]]\n" " [,playback-compression=[on|off]][,seamless-migration=[on|off]]\n"
" [,gl=[on|off]]\n" " [,gl=[on|off]][,rendernode=<file>]\n"
" enable spice\n" " enable spice\n"
" at least one of {port, tls-port} is mandatory\n", " at least one of {port, tls-port} is mandatory\n",
QEMU_ARCH_ALL) QEMU_ARCH_ALL)
@ -1161,6 +1161,10 @@ Enable/disable spice seamless migration. Default is off.
@item gl=[on|off] @item gl=[on|off]
Enable/disable OpenGL context. Default is off. Enable/disable OpenGL context. Default is off.
@item rendernode=<file>
DRM render node for OpenGL rendering. If not specified, it will pick
the first available. (Since 2.9)
@end table @end table
ETEXI ETEXI

10
ui/egl-helpers.c
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@ -44,13 +44,17 @@ int qemu_egl_rn_fd;
struct gbm_device *qemu_egl_rn_gbm_dev; struct gbm_device *qemu_egl_rn_gbm_dev;
EGLContext qemu_egl_rn_ctx; EGLContext qemu_egl_rn_ctx;
int qemu_egl_rendernode_open(void) static int qemu_egl_rendernode_open(const char *rendernode)
{ {
DIR *dir; DIR *dir;
struct dirent *e; struct dirent *e;
int r, fd; int r, fd;
char *p; char *p;
if (rendernode) {
return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
}
dir = opendir("/dev/dri"); dir = opendir("/dev/dri");
if (!dir) { if (!dir) {
return -1; return -1;
@ -85,11 +89,11 @@ int qemu_egl_rendernode_open(void)
return fd; return fd;
} }
int egl_rendernode_init(void) int egl_rendernode_init(const char *rendernode)
{ {
qemu_egl_rn_fd = -1; qemu_egl_rn_fd = -1;
qemu_egl_rn_fd = qemu_egl_rendernode_open(); qemu_egl_rn_fd = qemu_egl_rendernode_open(rendernode);
if (qemu_egl_rn_fd == -1) { if (qemu_egl_rn_fd == -1) {
error_report("egl: no drm render node available"); error_report("egl: no drm render node available");
goto err; goto err;

5
ui/spice-core.c
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@ -501,6 +501,9 @@ static QemuOptsList qemu_spice_opts = {
},{ },{
.name = "gl", .name = "gl",
.type = QEMU_OPT_BOOL, .type = QEMU_OPT_BOOL,
},{
.name = "rendernode",
.type = QEMU_OPT_STRING,
#endif #endif
}, },
{ /* end of list */ } { /* end of list */ }
@ -833,7 +836,7 @@ void qemu_spice_init(void)
"incompatible with -spice port/tls-port"); "incompatible with -spice port/tls-port");
exit(1); exit(1);
} }
if (egl_rendernode_init() != 0) { if (egl_rendernode_init(qemu_opt_get(opts, "rendernode")) != 0) {
error_report("Failed to initialize EGL render node for SPICE GL"); error_report("Failed to initialize EGL render node for SPICE GL");
exit(1); exit(1);
} }