/* Process the frontend framebuffer config */
static int xenfb_read_frontend_fb_config(struct xenfb *xenfb) {
struct xenfb_page *fb_page;
int val;
int videoram;
if (xenfb_xs_scanf1(xenfb->xsh, xenfb->fb.otherend, "feature-update",
"%d", &val) < 0)
val = 0;
if (!val) {
fprintf(stderr, "feature-update not supported\n");
errno = ENOTSUP;
return -1;
}
if (xenfb_xs_scanf1(xenfb->xsh, xenfb->fb.otherend, "protocol", "%63s",
xenfb->protocol) < 0)
xenfb->protocol[0] = '\0';
xenfb_xs_printf(xenfb->xsh, xenfb->fb.nodename, "request-update", "1");
xenfb->refresh_period = -1;
if (xenfb_xs_scanf1(xenfb->xsh, xenfb->fb.nodename, "videoram", "%d",
&videoram) < 0)
videoram = 0;
fb_page = xenfb->fb.page;
if (xenfb_configure_fb(xenfb, videoram * 1024 * 1024U,
fb_page->width, fb_page->height, fb_page->depth,
fb_page->mem_length, 0, fb_page->line_length)
< 0) {
errno = EINVAL;
return -1;
}
if (xenfb_map_fb(xenfb, xenfb->fb.otherend_id) < 0)
return -1;
/* Indicate we have the frame buffer resize feature */
xenfb_xs_printf(xenfb->xsh, xenfb->fb.nodename, "feature-resize", "1");
/* Tell kbd pointer the screen geometry */
xenfb_xs_printf(xenfb->xsh, xenfb->kbd.nodename, "width", "%d", xenfb->width);
xenfb_xs_printf(xenfb->xsh, xenfb->kbd.nodename, "height", "%d", xenfb->height);
if (xenfb_switch_state(&xenfb->fb, XenbusStateConnected))
return -1;
if (xenfb_switch_state(&xenfb->kbd, XenbusStateConnected))
return -1;
return 0;
}
static int fb_connect(struct XenDevice *xendev)
{
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
struct xenfb_page *fb_page;
int videoram;
int rc;
if (xenstore_read_fe_int(xendev, "videoram", &videoram) == -1)
videoram = 0;
rc = common_bind(&fb->c);
if (rc != 0)
return rc;
fb_page = fb->c.page;
rc = xenfb_configure_fb(fb, videoram * 1024 * 1024U,
fb_page->width, fb_page->height, fb_page->depth,
fb_page->mem_length, 0, fb_page->line_length);
if (rc != 0)
return rc;
rc = xenfb_map_fb(fb);
if (rc != 0)
return rc;
#if 0 /* handled in xen_init_display() for now */
if (!fb->have_console) {
fb->c.ds = graphic_console_init(xenfb_update,
xenfb_invalidate,
NULL,
NULL,
fb);
fb->have_console = 1;
}
#endif
if (xenstore_read_fe_int(xendev, "feature-update", &fb->feature_update) == -1)
fb->feature_update = 0;
if (fb->feature_update)
xenstore_write_be_int(xendev, "request-update", 1);
xen_be_printf(xendev, 1, "feature-update=%d, videoram=%d\n",
fb->feature_update, videoram);
return 0;
}
/* Process the frontend framebuffer config */
static int xenfb_read_frontend_fb_config(struct xenfb *xenfb) {
struct xenfb_page *fb_page;
int val;
if (xenfb_xs_scanf1(xenfb->xsh, xenfb->fb.otherend, "feature-update",
"%d", &val) < 0)
val = 0;
if (!val) {
fprintf(stderr, "feature-update not supported\n");
errno = ENOTSUP;
return -1;
}
if (xenfb_xs_scanf1(xenfb->xsh, xenfb->fb.otherend, "protocol", "%63s",
xenfb->protocol) < 0)
xenfb->protocol[0] = '\0';
xenfb_xs_printf(xenfb->xsh, xenfb->fb.nodename, "request-update", "1");
/* TODO check for permitted ranges */
fb_page = xenfb->fb.page;
xenfb->depth = fb_page->depth;
xenfb->width = fb_page->width;
xenfb->height = fb_page->height;
/* TODO check for consistency with the above */
xenfb->fb_len = fb_page->mem_length;
xenfb->row_stride = fb_page->line_length;
fprintf(stderr, "Framebuffer depth %d width %d height %d line %d\n",
fb_page->depth, fb_page->width, fb_page->height, fb_page->line_length);
if (xenfb_map_fb(xenfb, xenfb->fb.otherend_id) < 0)
return -1;
if (xenfb_switch_state(&xenfb->fb, XenbusStateConnected))
return -1;
if (xenfb_switch_state(&xenfb->kbd, XenbusStateConnected))
return -1;
return 0;
}
