char *svga_rcall(uint64_t source, struct vfs_obj *file, const char *args) {
char *rets = NULL;
int x, y, d, w, h;
int mode;
if (!strcmp(args, "getmode")) {
rets = malloc(16);
sprintf(rets, "%d %d %d", svga.w, svga.h, svga.d);
return rets;
}
if (!strcmp(args, "listmodes")) {
return strdup(modesstr);
}
if (!strcmp(args, "unshare")) {
mutex_spin(&file->mutex);
page_free(buffer, msize(buffer));
free(buffer);
buffer = valloc(svga.w * svga.h * 4);
mutex_free(&file->mutex);
return strdup("T");
}
if (!strncmp(args, "setmode ", 8)) {
if (sscanf(args + 8, "%i %i %i", &x, &y, &d) != 3) {
return strdup("");
}
mutex_spin(&file->mutex);
mode = svga_find_mode(x, y, d);
if (svga_set_mode(mode)) {
return strdup("");
}
page_free(buffer, msize(buffer));
free(buffer);
buffer = valloc(svga.w * svga.h * 4);
mutex_free(&file->mutex);
return strdup("T");
}
if (!strncmp(args, "syncrect ", 9)) {
if (sscanf(args + 9, "%i %i %i %i", &x, &y, &w, &h) != 4) {
return strdup("");
}
mutex_spin(&file->mutex);
svga_fliprect(buffer, x, y, w, h);
mutex_free(&file->mutex);
return strdup("T");
}
return NULL;
}
int main(int argc, char **argv) {
struct vfs_obj *root;
char *modesstr0;
char *modestr;
int i;
root = calloc(sizeof(struct vfs_obj), 1);
root->type = RP_TYPE_FILE;
root->size = 0;
root->acl = acl_set_default(root->acl, PERM_READ | PERM_WRITE);
vfs_set_index(0, root);
svga_init();
// generate list of modes
modesstr = strdup("");
for (i = 0; i < modelist_count; i++) {
modesstr0 = modesstr;
modestr = malloc(16);
sprintf(modestr, "%d:%d:%d ", modelist[i].w, modelist[i].h, modelist[i].d);
modesstr = strvcat(modesstr, modestr, NULL);
free(modesstr0);
}
svga_set_mode(svga_find_mode(640, 480, 24));
buffer = malloc(svga.w * svga.h * 4);
/* set up driver interface */
di_wrap_sync (svga_sync);
di_wrap_share(svga_share);
di_wrap_rcall(svga_rcall);
di_wrap_read (svga_read);
di_wrap_write(svga_write);
vfs_wrap_init();
/* register the driver as /dev/svga0 */
io_link("/dev/svga0", RP_CONS(getpid(), 0));
msendb(RP_CONS(getppid(), 0), PORT_CHILD);
_done();
return 0;
}
int main(int argc, char **argv) {
struct robject *canvas;
char *modesstr0;
char *modestr;
int i;
rdi_init();
canvas = rdi_file_cons(robject_new_index(), ACCS_READ | ACCS_WRITE | ACCS_EVENT);
robject_set_data(canvas, "type", (void*) "canvas share");
svga_init();
// generate list of modes
modesstr = strdup("");
for (i = 0; i < modelist_count; i++) {
modesstr0 = modesstr;
modestr = malloc(16);
sprintf(modestr, "%d:%d:%d ", modelist[i].w, modelist[i].h, modelist[i].d);
modesstr = strvcat(modesstr, modestr, NULL);
free(modesstr0);
}
svga_set_mode(svga_find_mode(640, 480, 24));
buffer = malloc(svga.w * svga.h * 4);
/* set up driver interface */
robject_set_call(canvas, "getmode", svga_rcall_getmode, STAT_READER);
robject_set_call(canvas, "listmodes", svga_rcall_listmodes, STAT_READER);
robject_set_call(canvas, "unshare", svga_rcall_unshare, STAT_WRITER);
robject_set_call(canvas, "setmode", svga_rcall_setmode, STAT_WRITER);
robject_set_call(canvas, "syncrect", svga_rcall_syncrect, STAT_WRITER);
robject_set_call(canvas, "sync", svga_rcall_sync, STAT_WRITER);
rdi_global_share_hook = svga_share;
/* register the driver as /dev/svga0 */
fs_plink("/dev/svga0", RP_CONS(getpid(), canvas->index), NULL);
msendb(RP_CONS(getppid(), 0), PORT_CHILD);
_done();
return 0;
}
char *svga_rcall_setmode(struct robject *self, rp_t source, int argc, char **argv) {
int x, y, d;
int mode;
if (argc != 4) return NULL;
x = atoi(argv[1]);
y = atoi(argv[2]);
d = atoi(argv[3]);
mutex_spin(&self->driver_mutex);
mode = svga_find_mode(x, y, d);
if (svga_set_mode(mode)) return NULL;
page_free(buffer, msize(buffer));
free(buffer);
buffer = valloc(svga.w * svga.h * 4);
mutex_free(&self->driver_mutex);
return strdup("T");
}