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-rw-r--r--src/glx/x11/glxext.c70
1 files changed, 67 insertions, 3 deletions
diff --git a/src/glx/x11/glxext.c b/src/glx/x11/glxext.c
index d386436396..bad09ce4cc 100644
--- a/src/glx/x11/glxext.c
+++ b/src/glx/x11/glxext.c
@@ -722,6 +722,69 @@ static const __DRIinterfaceMethods interface_methods = {
__glXGetMscRateOML,
};
+#define DRM_MAX_FDS 16
+static struct {
+ char *BusID;
+ int fd;
+ int refcount;
+} connection[DRM_MAX_FDS];
+
+static int nr_fds = 0;
+
+int drmOpenOnce(void *unused,
+ const char *BusID,
+ int *newlyopened)
+{
+ int i;
+ int fd;
+
+ for (i = 0; i < nr_fds; i++)
+ if (strcmp(BusID, connection[i].BusID) == 0) {
+ connection[i].refcount++;
+ *newlyopened = 0;
+ return connection[i].fd;
+ }
+
+ fd = drmOpen(unused, BusID);
+ if (fd <= 0 || nr_fds == DRM_MAX_FDS)
+ return fd;
+
+ connection[nr_fds].BusID = strdup(BusID);
+ connection[nr_fds].fd = fd;
+ connection[nr_fds].refcount = 1;
+ *newlyopened = 1;
+
+ if (0)
+ fprintf(stderr, "saved connection %d for %s %d\n",
+ nr_fds, connection[nr_fds].BusID,
+ strcmp(BusID, connection[nr_fds].BusID));
+
+ nr_fds++;
+
+ return fd;
+}
+
+void drmCloseOnce(int fd)
+{
+ int i;
+
+
+
+ for (i = 0; i < nr_fds; i++) {
+ if (fd == connection[i].fd) {
+ if (--connection[i].refcount == 0) {
+ drmClose(connection[i].fd);
+ free(connection[i].BusID);
+
+ if (i < --nr_fds)
+ connection[i] = connection[nr_fds];
+
+ return;
+ }
+ }
+ }
+}
+
/**
* Perform the required libGL-side initialization and call the client-side
@@ -773,7 +836,8 @@ CallCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc,
framebuffer.dev_priv = NULL;
if (XF86DRIOpenConnection(dpy, scrn, &hSAREA, &BusID)) {
- fd = drmOpen(NULL,BusID);
+ int newlyopened;
+ fd = drmOpenOnce(NULL,BusID, &newlyopened);
Xfree(BusID); /* No longer needed */
err_msg = "open DRM";
@@ -800,7 +864,7 @@ CallCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc,
}
err_msg = "XF86DRIAuthConnection";
- if (XF86DRIAuthConnection(dpy, scrn, magic)) {
+ if (!newlyopened || XF86DRIAuthConnection(dpy, scrn, magic)) {
char *driverName;
/*
@@ -904,7 +968,7 @@ CallCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc,
}
if ( fd >= 0 ) {
- (void)drmClose(fd);
+ (void)drmCloseOnce(fd);
}
(void)XF86DRICloseConnection(dpy, scrn);