[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3] xenfb: remove xen_init_display "temporary" hack
> -----Original Message----- > From: Stefano Stabellini [mailto:sstabellini@xxxxxxxxxx] > Sent: 07 July 2017 00:48 > To: xen-devel@xxxxxxxxxxxxxxxxxxxx; qemu-devel@xxxxxxxxxx > Cc: sstabellini@xxxxxxxxxx; peter.maydell@xxxxxxxxxx; Anthony Perard > <anthony.perard@xxxxxxxxxx>; kraxel@xxxxxxxxxx; Paul Durrant > <Paul.Durrant@xxxxxxxxxx>; Owen Smith <owen.smith@xxxxxxxxxx> > Subject: [PATCH v3] xenfb: remove xen_init_display "temporary" hack > > Initialize xenfb properly, as all other backends, from its own > "initialise" function. > > Remove the dependency of vkbd on vfb: use > qemu_console_lookup_by_index > to find the principal console (to get the size of the screen) instead of > relying on a vfb backend to be available (which adds a dependency > between the two). > > Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> > > --- > Note that this patch conflicts with Owen's series > (http://secure-web.cisco.com/1jP- > CKLunauJRBQedgDNfgct9mtg_pNYLJWNBDT- > zM4mg5Am27ioYBmyUMxhbMGM-97- > en9LEKERq7K7PwzK4kZBJPu8kasnucJpwQLHGLR1ZwG8yq6QbP- > RZeThfWp42NwZdDfCV4gMKbZJgmcMEA9Vh4i3YlDjFbj8UtWwVNBCFiVYwpL > iMtPnfwwfoPhs0Ejm-ylu-jvLn6qqqxntDe1wQ8OXB2Q- > PvqCLVV55pmM3cgmnYKy2curl0CpByIQe0JtMcKS8aReLRVAFPGLMMw/http > %3A%2F%2Fmarc.info%2F%3Fl%3Dqemu- > devel%26m%3D149908803419893%26w%3D2). However it > should be very easy to rebase one on top of the other. > > Changes in v3: > - use qemu_console_lookup_by_index to find the console from > xenfb_mouse_event > - remove con from struct common and add it to struct XenFB > - remove in->c.con check from input_initialise Thanks. All looks good now :-) Reviewed-by: Paul Durrant <paul.durrant@xxxxxxxxxx> > > Changes in v2: > - remove xen_init_display from xen_backend.h > - handle cases where vkbd is missing > > diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c > index e76c0d8..df8b78f 100644 > --- a/hw/display/xenfb.c > +++ b/hw/display/xenfb.c > @@ -46,7 +46,6 @@ > struct common { > struct XenDevice xendev; /* must be first */ > void *page; > - QemuConsole *con; > }; > > struct XenInput { > @@ -61,6 +60,7 @@ struct XenInput { > > struct XenFB { > struct common c; > + QemuConsole *con; > size_t fb_len; > int row_stride; > int depth; > @@ -71,7 +71,6 @@ struct XenFB { > int fbpages; > int feature_update; > int bug_trigger; > - int have_console; > int do_resize; > > struct { > @@ -80,6 +79,7 @@ struct XenFB { > int up_count; > int up_fullscreen; > }; > +static const GraphicHwOps xenfb_ops; > > /* -------------------------------------------------------------------- */ > > @@ -306,10 +306,18 @@ static void xenfb_mouse_event(void *opaque, > int dx, int dy, int dz, int button_state) > { > struct XenInput *xenfb = opaque; > - DisplaySurface *surface = qemu_console_surface(xenfb->c.con); > - int dw = surface_width(surface); > - int dh = surface_height(surface); > - int i; > + QemuConsole *con = qemu_console_lookup_by_index(0); > + DisplaySurface *surface; > + int dw, dh, i; > + > + if (!con) { > + xen_pv_printf(&xenfb->c.xendev, 0, "No QEMU console available"); > + return; > + } > + > + surface = qemu_console_surface(con); > + dw = surface_width(surface); > + dh = surface_height(surface); > > trace_xenfb_mouse_event(opaque, dx, dy, dz, button_state, > xenfb->abs_pointer_wanted); > @@ -344,11 +352,6 @@ static int input_initialise(struct XenDevice *xendev) > struct XenInput *in = container_of(xendev, struct XenInput, c.xendev); > int rc; > > - if (!in->c.con) { > - xen_pv_printf(xendev, 1, "ds not set (yet)\n"); > - return -1; > - } > - > rc = common_bind(&in->c); > if (rc != 0) > return rc; > @@ -608,7 +611,7 @@ static int xenfb_configure_fb(struct XenFB *xenfb, > size_t fb_len_lim, > */ > static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h) > { > - DisplaySurface *surface = qemu_console_surface(xenfb->c.con); > + DisplaySurface *surface = qemu_console_surface(xenfb->con); > int line, oops = 0; > int bpp = surface_bits_per_pixel(surface); > int linesize = surface_stride(surface); > @@ -642,7 +645,7 @@ static void xenfb_guest_copy(struct XenFB *xenfb, > int x, int y, int w, int h) > xen_pv_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d > bpp?\n", > __FUNCTION__, xenfb->depth, bpp); > > - dpy_gfx_update(xenfb->c.con, x, y, w, h); > + dpy_gfx_update(xenfb->con, x, y, w, h); > } > > #ifdef XENFB_TYPE_REFRESH_PERIOD > @@ -728,7 +731,7 @@ static void xenfb_update(void *opaque) > surface = qemu_create_displaysurface(xenfb->width, > xenfb->height); > break; > } > - dpy_gfx_replace_surface(xenfb->c.con, surface); > + dpy_gfx_replace_surface(xenfb->con, surface); > xen_pv_printf(&xenfb->c.xendev, 1, > "update: resizing: %dx%d @ %d bpp%s\n", > xenfb->width, xenfb->height, xenfb->depth, > @@ -877,16 +880,7 @@ static int fb_initialise(struct XenDevice *xendev) > 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 > + fb->con = graphic_console_init(NULL, 0, &xenfb_ops, fb); > > if (xenstore_read_fe_int(xendev, "feature-update", &fb- > >feature_update) == -1) > fb->feature_update = 0; > @@ -972,42 +966,3 @@ static const GraphicHwOps xenfb_ops = { > .gfx_update = xenfb_update, > .update_interval = xenfb_update_interval, > }; > - > -/* > - * FIXME/TODO: Kill this. > - * Temporary needed while DisplayState reorganization is in flight. > - */ > -void xen_init_display(int domid) > -{ > - struct XenDevice *xfb, *xin; > - struct XenFB *fb; > - struct XenInput *in; > - int i = 0; > - > -wait_more: > - i++; > - main_loop_wait(true); > - xfb = xen_pv_find_xendev("vfb", domid, 0); > - xin = xen_pv_find_xendev("vkbd", domid, 0); > - if (!xfb || !xin) { > - if (i < 256) { > - usleep(10000); > - goto wait_more; > - } > - xen_pv_printf(NULL, 1, "displaystate setup failed\n"); > - return; > - } > - > - /* vfb */ > - fb = container_of(xfb, struct XenFB, c.xendev); > - fb->c.con = graphic_console_init(NULL, 0, &xenfb_ops, fb); > - fb->have_console = 1; > - > - /* vkbd */ > - in = container_of(xin, struct XenInput, c.xendev); > - in->c.con = fb->c.con; > - > - /* retry ->init() */ > - xen_be_check_state(xin); > - xen_be_check_state(xfb); > -} > diff --git a/hw/xenpv/xen_machine_pv.c b/hw/xenpv/xen_machine_pv.c > index 79aef4e..31d2f25 100644 > --- a/hw/xenpv/xen_machine_pv.c > +++ b/hw/xenpv/xen_machine_pv.c > @@ -94,9 +94,6 @@ static void xen_init_pv(MachineState *machine) > > /* config cleanup hook */ > atexit(xen_config_cleanup); > - > - /* setup framebuffer */ > - xen_init_display(xen_domid); > } > > static void xenpv_machine_init(MachineClass *mc) > diff --git a/include/hw/xen/xen_backend.h > b/include/hw/xen/xen_backend.h > index 852c2ea..8a6fbcb 100644 > --- a/include/hw/xen/xen_backend.h > +++ b/include/hw/xen/xen_backend.h > @@ -55,8 +55,6 @@ extern struct XenDevOps xen_netdev_ops; /* > xen_nic.c */ > extern struct XenDevOps xen_usb_ops; /* xen-usb.c */ > #endif > > -void xen_init_display(int domid); > - > /* configuration (aka xenbus setup) */ > void xen_config_cleanup(void); > int xen_config_dev_blk(DriveInfo *disk); _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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