struct fbfront_dev *fb_open(void *fb, int width, int height, int depth)
{
unsigned long *mfns;
int linesize = width * (depth / 8);
int memsize = linesize * height;
int numpages = (memsize + PAGE_SIZE - 1) / PAGE_SIZE;
int i;
create_thread("kbdfront", kbd_thread, &kbd_sem);
mfns = malloc(numpages * sizeof(*mfns));
for (i = 0; i < numpages; i++) {
memset(fb + i * PAGE_SIZE, 0, PAGE_SIZE);
mfns[i] = virtual_to_mfn(fb + i * PAGE_SIZE);
}
fb_dev = init_fbfront(NULL, mfns, width, height, depth, linesize, numpages);
free(mfns);
if (!fb_dev)
return NULL;
down(&kbd_sem);
if (!kbd_dev)
return NULL;
return fb_dev;
}
int xenfb_pv_display_start(void *data)
{
DisplayState *ds;
struct fbfront_dev *fb_dev;
int kbd_fd, fb_fd;
int offset = 0;
unsigned long *mfns;
int n = VGA_RAM_SIZE / PAGE_SIZE;
int i;
if (!fb_path || !kbd_path)
return 0;
ds = xs->ds;
xs->vga_vram = data;
mfns = malloc(2 * n * sizeof(*mfns));
for (i = 0; i < n; i++)
mfns[i] = virtual_to_mfn(xs->vga_vram + i * PAGE_SIZE);
for (i = 0; i < n; i++)
mfns[n + i] = virtual_to_mfn(xs->nonshared_vram + i * PAGE_SIZE);
fb_dev = init_fbfront(fb_path, mfns, ds->width, ds->height, ds->depth, ds->linesize, 2 * n);
free(mfns);
if (!fb_dev) {
fprintf(stderr,"can't open frame buffer\n");
exit(1);
}
free(fb_path);
if (ds->shared_buf) {
offset = (void*) ds->data - xs->vga_vram;
} else {
offset = VGA_RAM_SIZE;
ds->data = xs->nonshared_vram;
}
if (offset)
fbfront_resize(fb_dev, ds->width, ds->height, ds->linesize, ds->depth, offset);
down(&xs->kbd_sem);
free(kbd_path);
kbd_fd = kbdfront_open(xs->kbd_dev);
qemu_set_fd_handler(kbd_fd, xenfb_kbd_handler, NULL, xs);
fb_fd = fbfront_open(fb_dev);
qemu_set_fd_handler(fb_fd, xenfb_fb_handler, NULL, xs);
xs->fb_dev = fb_dev;
return 0;
}
