2009-04-22 23:19:25 +08:00
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/*
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* xen paravirt framebuffer backend
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*
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* Copyright IBM, Corp. 2005-2006
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* Copyright Red Hat, Inc. 2006-2008
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>,
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* Markus Armbruster <armbru@redhat.com>,
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* Daniel P. Berrange <berrange@redhat.com>,
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* Pat Campbell <plc@novell.com>,
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* Gerd Hoffmann <kraxel@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; under version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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2009-07-17 04:47:01 +08:00
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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2009-04-22 23:19:25 +08:00
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <xs.h>
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#include <xenctrl.h>
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#include <xen/event_channel.h>
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#include <xen/io/xenbus.h>
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#include <xen/io/fbif.h>
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#include <xen/io/kbdif.h>
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#include <xen/io/protocols.h>
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#include "hw.h"
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#include "console.h"
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#include "qemu-char.h"
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#include "xen_backend.h"
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#ifndef BTN_LEFT
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#define BTN_LEFT 0x110 /* from <linux/input.h> */
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#endif
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/* -------------------------------------------------------------------- */
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struct common {
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struct XenDevice xendev; /* must be first */
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void *page;
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DisplayState *ds;
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};
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struct XenInput {
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struct common c;
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int abs_pointer_wanted; /* Whether guest supports absolute pointer */
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int button_state; /* Last seen pointer button state */
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int extended;
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QEMUPutMouseEntry *qmouse;
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};
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#define UP_QUEUE 8
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struct XenFB {
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struct common c;
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size_t fb_len;
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int row_stride;
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int depth;
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int width;
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int height;
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int offset;
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void *pixels;
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int fbpages;
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int feature_update;
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int refresh_period;
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int bug_trigger;
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int have_console;
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int do_resize;
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struct {
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int x,y,w,h;
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} up_rects[UP_QUEUE];
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int up_count;
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int up_fullscreen;
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};
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/* -------------------------------------------------------------------- */
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static int common_bind(struct common *c)
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{
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int mfn;
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if (xenstore_read_fe_int(&c->xendev, "page-ref", &mfn) == -1)
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return -1;
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if (xenstore_read_fe_int(&c->xendev, "event-channel", &c->xendev.remote_port) == -1)
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return -1;
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c->page = xc_map_foreign_range(xen_xc, c->xendev.dom,
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XC_PAGE_SIZE,
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PROT_READ | PROT_WRITE, mfn);
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if (c->page == NULL)
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return -1;
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xen_be_bind_evtchn(&c->xendev);
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xen_be_printf(&c->xendev, 1, "ring mfn %d, remote-port %d, local-port %d\n",
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mfn, c->xendev.remote_port, c->xendev.local_port);
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return 0;
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}
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static void common_unbind(struct common *c)
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{
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xen_be_unbind_evtchn(&c->xendev);
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if (c->page) {
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munmap(c->page, XC_PAGE_SIZE);
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c->page = NULL;
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}
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}
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/* -------------------------------------------------------------------- */
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#if 0
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/*
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* These two tables are not needed any more, but left in here
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* intentionally as documentation, to show how scancode2linux[]
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* was generated.
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*
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* Tables to map from scancode to Linux input layer keycode.
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* Scancodes are hardware-specific. These maps assumes a
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* standard AT or PS/2 keyboard which is what QEMU feeds us.
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*/
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const unsigned char atkbd_set2_keycode[512] = {
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0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
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0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
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0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
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0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
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0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
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0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
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0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
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82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
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173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
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159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142,
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157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
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226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
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110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
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};
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const unsigned char atkbd_unxlate_table[128] = {
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0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
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21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
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35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
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50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
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11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
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114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
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71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
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19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
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};
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#endif
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/*
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* for (i = 0; i < 128; i++) {
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* scancode2linux[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
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* scancode2linux[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
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* }
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*/
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static const unsigned char scancode2linux[512] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 99, 0, 86, 87, 88,117, 0, 0, 95,183,184,185,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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93, 0, 0, 89, 0, 0, 85, 91, 90, 92, 0, 94, 0,124,121, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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165, 0, 0, 0, 0, 0, 0, 0, 0,163, 0, 0, 96, 97, 0, 0,
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113,140,164, 0,166, 0, 0, 0, 0, 0,255, 0, 0, 0,114, 0,
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115, 0,150, 0, 0, 98,255, 99,100, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,119,119,102,103,104, 0,105,112,106,118,107,
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108,109,110,111, 0, 0, 0, 0, 0, 0, 0,125,126,127,116,142,
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0, 0, 0,143, 0,217,156,173,128,159,158,157,155,226, 0,112,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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/* Send an event to the keyboard frontend driver */
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static int xenfb_kbd_event(struct XenInput *xenfb,
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union xenkbd_in_event *event)
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{
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struct xenkbd_page *page = xenfb->c.page;
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uint32_t prod;
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if (xenfb->c.xendev.be_state != XenbusStateConnected)
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return 0;
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if (!page)
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return 0;
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prod = page->in_prod;
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if (prod - page->in_cons == XENKBD_IN_RING_LEN) {
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errno = EAGAIN;
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return -1;
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}
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xen_mb(); /* ensure ring space available */
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XENKBD_IN_RING_REF(page, prod) = *event;
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xen_wmb(); /* ensure ring contents visible */
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page->in_prod = prod + 1;
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return xen_be_send_notify(&xenfb->c.xendev);
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}
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/* Send a keyboard (or mouse button) event */
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static int xenfb_send_key(struct XenInput *xenfb, bool down, int keycode)
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{
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union xenkbd_in_event event;
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memset(&event, 0, XENKBD_IN_EVENT_SIZE);
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event.type = XENKBD_TYPE_KEY;
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event.key.pressed = down ? 1 : 0;
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event.key.keycode = keycode;
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return xenfb_kbd_event(xenfb, &event);
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}
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/* Send a relative mouse movement event */
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static int xenfb_send_motion(struct XenInput *xenfb,
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int rel_x, int rel_y, int rel_z)
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{
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union xenkbd_in_event event;
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memset(&event, 0, XENKBD_IN_EVENT_SIZE);
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event.type = XENKBD_TYPE_MOTION;
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event.motion.rel_x = rel_x;
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event.motion.rel_y = rel_y;
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#if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030207
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event.motion.rel_z = rel_z;
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#endif
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return xenfb_kbd_event(xenfb, &event);
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}
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/* Send an absolute mouse movement event */
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static int xenfb_send_position(struct XenInput *xenfb,
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int abs_x, int abs_y, int z)
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{
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union xenkbd_in_event event;
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memset(&event, 0, XENKBD_IN_EVENT_SIZE);
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event.type = XENKBD_TYPE_POS;
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event.pos.abs_x = abs_x;
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event.pos.abs_y = abs_y;
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#if __XEN_LATEST_INTERFACE_VERSION__ == 0x00030207
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event.pos.abs_z = z;
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#endif
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#if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030208
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event.pos.rel_z = z;
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#endif
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return xenfb_kbd_event(xenfb, &event);
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}
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/*
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* Send a key event from the client to the guest OS
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* QEMU gives us a raw scancode from an AT / PS/2 style keyboard.
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* We have to turn this into a Linux Input layer keycode.
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*
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* Extra complexity from the fact that with extended scancodes
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* (like those produced by arrow keys) this method gets called
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* twice, but we only want to send a single event. So we have to
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* track the '0xe0' scancode state & collapse the extended keys
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* as needed.
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*
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* Wish we could just send scancodes straight to the guest which
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* already has code for dealing with this...
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*/
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static void xenfb_key_event(void *opaque, int scancode)
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{
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struct XenInput *xenfb = opaque;
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int down = 1;
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if (scancode == 0xe0) {
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xenfb->extended = 1;
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return;
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} else if (scancode & 0x80) {
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scancode &= 0x7f;
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down = 0;
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}
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if (xenfb->extended) {
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scancode |= 0x80;
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xenfb->extended = 0;
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}
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xenfb_send_key(xenfb, down, scancode2linux[scancode]);
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}
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/*
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* Send a mouse event from the client to the guest OS
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*
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* The QEMU mouse can be in either relative, or absolute mode.
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* Movement is sent separately from button state, which has to
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* be encoded as virtual key events. We also don't actually get
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* given any button up/down events, so have to track changes in
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* the button state.
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*/
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static void xenfb_mouse_event(void *opaque,
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int dx, int dy, int dz, int button_state)
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{
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struct XenInput *xenfb = opaque;
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int dw = ds_get_width(xenfb->c.ds);
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int dh = ds_get_height(xenfb->c.ds);
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int i;
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if (xenfb->abs_pointer_wanted)
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xenfb_send_position(xenfb,
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dx * (dw - 1) / 0x7fff,
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dy * (dh - 1) / 0x7fff,
|
|
|
|
dz);
|
|
|
|
else
|
|
|
|
xenfb_send_motion(xenfb, dx, dy, dz);
|
|
|
|
|
|
|
|
for (i = 0 ; i < 8 ; i++) {
|
|
|
|
int lastDown = xenfb->button_state & (1 << i);
|
|
|
|
int down = button_state & (1 << i);
|
|
|
|
if (down == lastDown)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (xenfb_send_key(xenfb, down, BTN_LEFT+i) < 0)
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
xenfb->button_state = button_state;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int input_init(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
xenstore_write_be_int(xendev, "feature-abs-pointer", 1);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-06-17 20:15:35 +08:00
|
|
|
static int input_initialise(struct XenDevice *xendev)
|
2009-04-22 23:19:25 +08:00
|
|
|
{
|
|
|
|
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
|
|
|
|
int rc;
|
|
|
|
|
2011-06-25 00:36:11 +08:00
|
|
|
if (!in->c.ds) {
|
|
|
|
char *vfb = xenstore_read_str(NULL, "device/vfb");
|
|
|
|
if (vfb == NULL) {
|
|
|
|
/* there is no vfb, run vkbd on its own */
|
|
|
|
in->c.ds = get_displaystate();
|
|
|
|
} else {
|
2011-08-21 11:09:37 +08:00
|
|
|
g_free(vfb);
|
2011-06-25 00:36:11 +08:00
|
|
|
xen_be_printf(xendev, 1, "ds not set (yet)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-04-22 23:19:25 +08:00
|
|
|
rc = common_bind(&in->c);
|
|
|
|
if (rc != 0)
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
qemu_add_kbd_event_handler(xenfb_key_event, in);
|
2011-06-17 20:16:00 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void input_connected(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
|
|
|
|
|
|
|
|
if (xenstore_read_fe_int(xendev, "request-abs-pointer",
|
|
|
|
&in->abs_pointer_wanted) == -1) {
|
|
|
|
in->abs_pointer_wanted = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (in->qmouse) {
|
|
|
|
qemu_remove_mouse_event_handler(in->qmouse);
|
|
|
|
}
|
2009-04-22 23:19:25 +08:00
|
|
|
in->qmouse = qemu_add_mouse_event_handler(xenfb_mouse_event, in,
|
|
|
|
in->abs_pointer_wanted,
|
|
|
|
"Xen PVFB Mouse");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void input_disconnect(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
|
|
|
|
|
|
|
|
if (in->qmouse) {
|
|
|
|
qemu_remove_mouse_event_handler(in->qmouse);
|
|
|
|
in->qmouse = NULL;
|
|
|
|
}
|
|
|
|
qemu_add_kbd_event_handler(NULL, NULL);
|
|
|
|
common_unbind(&in->c);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void input_event(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
struct XenInput *xenfb = container_of(xendev, struct XenInput, c.xendev);
|
|
|
|
struct xenkbd_page *page = xenfb->c.page;
|
|
|
|
|
|
|
|
/* We don't understand any keyboard events, so just ignore them. */
|
|
|
|
if (page->out_prod == page->out_cons)
|
|
|
|
return;
|
|
|
|
page->out_cons = page->out_prod;
|
|
|
|
xen_be_send_notify(&xenfb->c.xendev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
static void xenfb_copy_mfns(int mode, int count, unsigned long *dst, void *src)
|
|
|
|
{
|
|
|
|
uint32_t *src32 = src;
|
|
|
|
uint64_t *src64 = src;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < count; i++)
|
|
|
|
dst[i] = (mode == 32) ? src32[i] : src64[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
static int xenfb_map_fb(struct XenFB *xenfb)
|
|
|
|
{
|
|
|
|
struct xenfb_page *page = xenfb->c.page;
|
|
|
|
char *protocol = xenfb->c.xendev.protocol;
|
|
|
|
int n_fbdirs;
|
|
|
|
unsigned long *pgmfns = NULL;
|
|
|
|
unsigned long *fbmfns = NULL;
|
|
|
|
void *map, *pd;
|
|
|
|
int mode, ret = -1;
|
|
|
|
|
|
|
|
/* default to native */
|
|
|
|
pd = page->pd;
|
|
|
|
mode = sizeof(unsigned long) * 8;
|
|
|
|
|
|
|
|
if (!protocol) {
|
|
|
|
/*
|
|
|
|
* Undefined protocol, some guesswork needed.
|
|
|
|
*
|
|
|
|
* Old frontends which don't set the protocol use
|
|
|
|
* one page directory only, thus pd[1] must be zero.
|
|
|
|
* pd[1] of the 32bit struct layout and the lower
|
|
|
|
* 32 bits of pd[0] of the 64bit struct layout have
|
|
|
|
* the same location, so we can check that ...
|
|
|
|
*/
|
|
|
|
uint32_t *ptr32 = NULL;
|
|
|
|
uint32_t *ptr64 = NULL;
|
|
|
|
#if defined(__i386__)
|
|
|
|
ptr32 = (void*)page->pd;
|
|
|
|
ptr64 = ((void*)page->pd) + 4;
|
|
|
|
#elif defined(__x86_64__)
|
|
|
|
ptr32 = ((void*)page->pd) - 4;
|
|
|
|
ptr64 = (void*)page->pd;
|
|
|
|
#endif
|
|
|
|
if (ptr32) {
|
|
|
|
if (ptr32[1] == 0) {
|
|
|
|
mode = 32;
|
|
|
|
pd = ptr32;
|
|
|
|
} else {
|
|
|
|
mode = 64;
|
|
|
|
pd = ptr64;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#if defined(__x86_64__)
|
|
|
|
} else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_32) == 0) {
|
|
|
|
/* 64bit dom0, 32bit domU */
|
|
|
|
mode = 32;
|
|
|
|
pd = ((void*)page->pd) - 4;
|
|
|
|
#elif defined(__i386__)
|
|
|
|
} else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_64) == 0) {
|
|
|
|
/* 32bit dom0, 64bit domU */
|
|
|
|
mode = 64;
|
|
|
|
pd = ((void*)page->pd) + 4;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
if (xenfb->pixels) {
|
|
|
|
munmap(xenfb->pixels, xenfb->fbpages * XC_PAGE_SIZE);
|
|
|
|
xenfb->pixels = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
xenfb->fbpages = (xenfb->fb_len + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE;
|
|
|
|
n_fbdirs = xenfb->fbpages * mode / 8;
|
|
|
|
n_fbdirs = (n_fbdirs + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE;
|
|
|
|
|
2011-08-21 11:09:37 +08:00
|
|
|
pgmfns = g_malloc0(sizeof(unsigned long) * n_fbdirs);
|
|
|
|
fbmfns = g_malloc0(sizeof(unsigned long) * xenfb->fbpages);
|
2009-04-22 23:19:25 +08:00
|
|
|
|
|
|
|
xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd);
|
|
|
|
map = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
|
|
|
|
PROT_READ, pgmfns, n_fbdirs);
|
|
|
|
if (map == NULL)
|
|
|
|
goto out;
|
|
|
|
xenfb_copy_mfns(mode, xenfb->fbpages, fbmfns, map);
|
|
|
|
munmap(map, n_fbdirs * XC_PAGE_SIZE);
|
|
|
|
|
|
|
|
xenfb->pixels = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
|
|
|
|
PROT_READ | PROT_WRITE, fbmfns, xenfb->fbpages);
|
|
|
|
if (xenfb->pixels == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
ret = 0; /* all is fine */
|
|
|
|
|
|
|
|
out:
|
2011-08-21 11:09:37 +08:00
|
|
|
g_free(pgmfns);
|
|
|
|
g_free(fbmfns);
|
2009-04-22 23:19:25 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int xenfb_configure_fb(struct XenFB *xenfb, size_t fb_len_lim,
|
|
|
|
int width, int height, int depth,
|
|
|
|
size_t fb_len, int offset, int row_stride)
|
|
|
|
{
|
|
|
|
size_t mfn_sz = sizeof(*((struct xenfb_page *)0)->pd);
|
|
|
|
size_t pd_len = sizeof(((struct xenfb_page *)0)->pd) / mfn_sz;
|
|
|
|
size_t fb_pages = pd_len * XC_PAGE_SIZE / mfn_sz;
|
|
|
|
size_t fb_len_max = fb_pages * XC_PAGE_SIZE;
|
|
|
|
int max_width, max_height;
|
|
|
|
|
|
|
|
if (fb_len_lim > fb_len_max) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "fb size limit %zu exceeds %zu, corrected\n",
|
|
|
|
fb_len_lim, fb_len_max);
|
|
|
|
fb_len_lim = fb_len_max;
|
|
|
|
}
|
|
|
|
if (fb_len_lim && fb_len > fb_len_lim) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "frontend fb size %zu limited to %zu\n",
|
|
|
|
fb_len, fb_len_lim);
|
|
|
|
fb_len = fb_len_lim;
|
|
|
|
}
|
|
|
|
if (depth != 8 && depth != 16 && depth != 24 && depth != 32) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "can't handle frontend fb depth %d\n",
|
|
|
|
depth);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (row_stride <= 0 || row_stride > fb_len) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend stride %d\n", row_stride);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
max_width = row_stride / (depth / 8);
|
|
|
|
if (width < 0 || width > max_width) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend width %d limited to %d\n",
|
|
|
|
width, max_width);
|
|
|
|
width = max_width;
|
|
|
|
}
|
|
|
|
if (offset < 0 || offset >= fb_len) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend offset %d (max %zu)\n",
|
|
|
|
offset, fb_len - 1);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
max_height = (fb_len - offset) / row_stride;
|
|
|
|
if (height < 0 || height > max_height) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend height %d limited to %d\n",
|
|
|
|
height, max_height);
|
|
|
|
height = max_height;
|
|
|
|
}
|
|
|
|
xenfb->fb_len = fb_len;
|
|
|
|
xenfb->row_stride = row_stride;
|
|
|
|
xenfb->depth = depth;
|
|
|
|
xenfb->width = width;
|
|
|
|
xenfb->height = height;
|
|
|
|
xenfb->offset = offset;
|
|
|
|
xenfb->up_fullscreen = 1;
|
|
|
|
xenfb->do_resize = 1;
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 1, "framebuffer %dx%dx%d offset %d stride %d\n",
|
|
|
|
width, height, depth, offset, row_stride);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* A convenient function for munging pixels between different depths */
|
|
|
|
#define BLT(SRC_T,DST_T,RSB,GSB,BSB,RDB,GDB,BDB) \
|
|
|
|
for (line = y ; line < (y+h) ; line++) { \
|
|
|
|
SRC_T *src = (SRC_T *)(xenfb->pixels \
|
|
|
|
+ xenfb->offset \
|
|
|
|
+ (line * xenfb->row_stride) \
|
|
|
|
+ (x * xenfb->depth / 8)); \
|
|
|
|
DST_T *dst = (DST_T *)(data \
|
|
|
|
+ (line * linesize) \
|
|
|
|
+ (x * bpp / 8)); \
|
|
|
|
int col; \
|
|
|
|
const int RSS = 32 - (RSB + GSB + BSB); \
|
|
|
|
const int GSS = 32 - (GSB + BSB); \
|
|
|
|
const int BSS = 32 - (BSB); \
|
|
|
|
const uint32_t RSM = (~0U) << (32 - RSB); \
|
|
|
|
const uint32_t GSM = (~0U) << (32 - GSB); \
|
|
|
|
const uint32_t BSM = (~0U) << (32 - BSB); \
|
|
|
|
const int RDS = 32 - (RDB + GDB + BDB); \
|
|
|
|
const int GDS = 32 - (GDB + BDB); \
|
|
|
|
const int BDS = 32 - (BDB); \
|
|
|
|
const uint32_t RDM = (~0U) << (32 - RDB); \
|
|
|
|
const uint32_t GDM = (~0U) << (32 - GDB); \
|
|
|
|
const uint32_t BDM = (~0U) << (32 - BDB); \
|
|
|
|
for (col = x ; col < (x+w) ; col++) { \
|
|
|
|
uint32_t spix = *src; \
|
|
|
|
*dst = (((spix << RSS) & RSM & RDM) >> RDS) | \
|
|
|
|
(((spix << GSS) & GSM & GDM) >> GDS) | \
|
|
|
|
(((spix << BSS) & BSM & BDM) >> BDS); \
|
|
|
|
src = (SRC_T *) ((unsigned long) src + xenfb->depth / 8); \
|
|
|
|
dst = (DST_T *) ((unsigned long) dst + bpp / 8); \
|
|
|
|
} \
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This copies data from the guest framebuffer region, into QEMU's
|
|
|
|
* displaysurface. qemu uses 16 or 32 bpp. In case the pv framebuffer
|
|
|
|
* uses something else we must convert and copy, otherwise we can
|
|
|
|
* supply the buffer directly and no thing here.
|
|
|
|
*/
|
|
|
|
static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h)
|
|
|
|
{
|
|
|
|
int line, oops = 0;
|
|
|
|
int bpp = ds_get_bits_per_pixel(xenfb->c.ds);
|
|
|
|
int linesize = ds_get_linesize(xenfb->c.ds);
|
|
|
|
uint8_t *data = ds_get_data(xenfb->c.ds);
|
|
|
|
|
|
|
|
if (!is_buffer_shared(xenfb->c.ds->surface)) {
|
|
|
|
switch (xenfb->depth) {
|
|
|
|
case 8:
|
|
|
|
if (bpp == 16) {
|
|
|
|
BLT(uint8_t, uint16_t, 3, 3, 2, 5, 6, 5);
|
|
|
|
} else if (bpp == 32) {
|
|
|
|
BLT(uint8_t, uint32_t, 3, 3, 2, 8, 8, 8);
|
|
|
|
} else {
|
|
|
|
oops = 1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 24:
|
|
|
|
if (bpp == 16) {
|
|
|
|
BLT(uint32_t, uint16_t, 8, 8, 8, 5, 6, 5);
|
|
|
|
} else if (bpp == 32) {
|
|
|
|
BLT(uint32_t, uint32_t, 8, 8, 8, 8, 8, 8);
|
|
|
|
} else {
|
|
|
|
oops = 1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
oops = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (oops) /* should not happen */
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d bpp?\n",
|
|
|
|
__FUNCTION__, xenfb->depth, bpp);
|
|
|
|
|
|
|
|
dpy_update(xenfb->c.ds, x, y, w, h);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef XENFB_TYPE_REFRESH_PERIOD
|
|
|
|
static int xenfb_queue_full(struct XenFB *xenfb)
|
|
|
|
{
|
|
|
|
struct xenfb_page *page = xenfb->c.page;
|
|
|
|
uint32_t cons, prod;
|
|
|
|
|
|
|
|
if (!page)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
prod = page->in_prod;
|
|
|
|
cons = page->in_cons;
|
|
|
|
return prod - cons == XENFB_IN_RING_LEN;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void xenfb_send_event(struct XenFB *xenfb, union xenfb_in_event *event)
|
|
|
|
{
|
|
|
|
uint32_t prod;
|
|
|
|
struct xenfb_page *page = xenfb->c.page;
|
|
|
|
|
|
|
|
prod = page->in_prod;
|
|
|
|
/* caller ensures !xenfb_queue_full() */
|
|
|
|
xen_mb(); /* ensure ring space available */
|
|
|
|
XENFB_IN_RING_REF(page, prod) = *event;
|
|
|
|
xen_wmb(); /* ensure ring contents visible */
|
|
|
|
page->in_prod = prod + 1;
|
|
|
|
|
|
|
|
xen_be_send_notify(&xenfb->c.xendev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void xenfb_send_refresh_period(struct XenFB *xenfb, int period)
|
|
|
|
{
|
|
|
|
union xenfb_in_event event;
|
|
|
|
|
|
|
|
memset(&event, 0, sizeof(event));
|
|
|
|
event.type = XENFB_TYPE_REFRESH_PERIOD;
|
|
|
|
event.refresh_period.period = period;
|
|
|
|
xenfb_send_event(xenfb, &event);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Periodic update of display.
|
|
|
|
* Also transmit the refresh interval to the frontend.
|
|
|
|
*
|
|
|
|
* Never ever do any qemu display operations
|
|
|
|
* (resize, screen update) outside this function.
|
|
|
|
* Our screen might be inactive. When asked for
|
|
|
|
* an update we know it is active.
|
|
|
|
*/
|
|
|
|
static void xenfb_update(void *opaque)
|
|
|
|
{
|
|
|
|
struct XenFB *xenfb = opaque;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (xenfb->c.xendev.be_state != XenbusStateConnected)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (xenfb->feature_update) {
|
|
|
|
#ifdef XENFB_TYPE_REFRESH_PERIOD
|
2009-04-25 15:31:43 +08:00
|
|
|
struct DisplayChangeListener *l;
|
2009-04-22 23:19:25 +08:00
|
|
|
int period = 99999999;
|
|
|
|
int idle = 1;
|
|
|
|
|
|
|
|
if (xenfb_queue_full(xenfb))
|
|
|
|
return;
|
|
|
|
|
|
|
|
for (l = xenfb->c.ds->listeners; l != NULL; l = l->next) {
|
|
|
|
if (l->idle)
|
|
|
|
continue;
|
|
|
|
idle = 0;
|
|
|
|
if (!l->gui_timer_interval) {
|
|
|
|
if (period > GUI_REFRESH_INTERVAL)
|
|
|
|
period = GUI_REFRESH_INTERVAL;
|
|
|
|
} else {
|
|
|
|
if (period > l->gui_timer_interval)
|
|
|
|
period = l->gui_timer_interval;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (idle)
|
|
|
|
period = XENFB_NO_REFRESH;
|
|
|
|
|
|
|
|
if (xenfb->refresh_period != period) {
|
|
|
|
xenfb_send_refresh_period(xenfb, period);
|
|
|
|
xenfb->refresh_period = period;
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 1, "refresh period: %d\n", period);
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
; /* nothing */
|
|
|
|
#endif
|
|
|
|
} else {
|
|
|
|
/* we don't get update notifications, thus use the
|
|
|
|
* sledge hammer approach ... */
|
|
|
|
xenfb->up_fullscreen = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* resize if needed */
|
|
|
|
if (xenfb->do_resize) {
|
|
|
|
xenfb->do_resize = 0;
|
|
|
|
switch (xenfb->depth) {
|
|
|
|
case 16:
|
|
|
|
case 32:
|
|
|
|
/* console.c supported depth -> buffer can be used directly */
|
|
|
|
qemu_free_displaysurface(xenfb->c.ds);
|
|
|
|
xenfb->c.ds->surface = qemu_create_displaysurface_from
|
|
|
|
(xenfb->width, xenfb->height, xenfb->depth,
|
|
|
|
xenfb->row_stride, xenfb->pixels + xenfb->offset);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* we must convert stuff */
|
|
|
|
qemu_resize_displaysurface(xenfb->c.ds, xenfb->width, xenfb->height);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 1, "update: resizing: %dx%d @ %d bpp%s\n",
|
|
|
|
xenfb->width, xenfb->height, xenfb->depth,
|
|
|
|
is_buffer_shared(xenfb->c.ds->surface) ? " (shared)" : "");
|
|
|
|
dpy_resize(xenfb->c.ds);
|
|
|
|
xenfb->up_fullscreen = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* run queued updates */
|
|
|
|
if (xenfb->up_fullscreen) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 3, "update: fullscreen\n");
|
|
|
|
xenfb_guest_copy(xenfb, 0, 0, xenfb->width, xenfb->height);
|
|
|
|
} else if (xenfb->up_count) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 3, "update: %d rects\n", xenfb->up_count);
|
|
|
|
for (i = 0; i < xenfb->up_count; i++)
|
|
|
|
xenfb_guest_copy(xenfb,
|
|
|
|
xenfb->up_rects[i].x,
|
|
|
|
xenfb->up_rects[i].y,
|
|
|
|
xenfb->up_rects[i].w,
|
|
|
|
xenfb->up_rects[i].h);
|
|
|
|
} else {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 3, "update: nothing\n");
|
|
|
|
}
|
|
|
|
xenfb->up_count = 0;
|
|
|
|
xenfb->up_fullscreen = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* QEMU display state changed, so refresh the framebuffer copy */
|
|
|
|
static void xenfb_invalidate(void *opaque)
|
|
|
|
{
|
|
|
|
struct XenFB *xenfb = opaque;
|
|
|
|
xenfb->up_fullscreen = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void xenfb_handle_events(struct XenFB *xenfb)
|
|
|
|
{
|
|
|
|
uint32_t prod, cons;
|
|
|
|
struct xenfb_page *page = xenfb->c.page;
|
|
|
|
|
|
|
|
prod = page->out_prod;
|
|
|
|
if (prod == page->out_cons)
|
|
|
|
return;
|
|
|
|
xen_rmb(); /* ensure we see ring contents up to prod */
|
|
|
|
for (cons = page->out_cons; cons != prod; cons++) {
|
|
|
|
union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons);
|
|
|
|
int x, y, w, h;
|
|
|
|
|
|
|
|
switch (event->type) {
|
|
|
|
case XENFB_TYPE_UPDATE:
|
|
|
|
if (xenfb->up_count == UP_QUEUE)
|
|
|
|
xenfb->up_fullscreen = 1;
|
|
|
|
if (xenfb->up_fullscreen)
|
|
|
|
break;
|
|
|
|
x = MAX(event->update.x, 0);
|
|
|
|
y = MAX(event->update.y, 0);
|
|
|
|
w = MIN(event->update.width, xenfb->width - x);
|
|
|
|
h = MIN(event->update.height, xenfb->height - y);
|
|
|
|
if (w < 0 || h < 0) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 1, "bogus update ignored\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (x != event->update.x ||
|
|
|
|
y != event->update.y ||
|
|
|
|
w != event->update.width ||
|
|
|
|
h != event->update.height) {
|
|
|
|
xen_be_printf(&xenfb->c.xendev, 1, "bogus update clipped\n");
|
|
|
|
}
|
|
|
|
if (w == xenfb->width && h > xenfb->height / 2) {
|
|
|
|
/* scroll detector: updated more than 50% of the lines,
|
|
|
|
* don't bother keeping track of the rectangles then */
|
|
|
|
xenfb->up_fullscreen = 1;
|
|
|
|
} else {
|
|
|
|
xenfb->up_rects[xenfb->up_count].x = x;
|
|
|
|
xenfb->up_rects[xenfb->up_count].y = y;
|
|
|
|
xenfb->up_rects[xenfb->up_count].w = w;
|
|
|
|
xenfb->up_rects[xenfb->up_count].h = h;
|
|
|
|
xenfb->up_count++;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
#ifdef XENFB_TYPE_RESIZE
|
|
|
|
case XENFB_TYPE_RESIZE:
|
|
|
|
if (xenfb_configure_fb(xenfb, xenfb->fb_len,
|
|
|
|
event->resize.width,
|
|
|
|
event->resize.height,
|
|
|
|
event->resize.depth,
|
|
|
|
xenfb->fb_len,
|
|
|
|
event->resize.offset,
|
|
|
|
event->resize.stride) < 0)
|
|
|
|
break;
|
|
|
|
xenfb_invalidate(xenfb);
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
xen_mb(); /* ensure we're done with ring contents */
|
|
|
|
page->out_cons = cons;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int fb_init(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
|
|
|
|
|
|
|
|
fb->refresh_period = -1;
|
|
|
|
|
|
|
|
#ifdef XENFB_TYPE_RESIZE
|
|
|
|
xenstore_write_be_int(xendev, "feature-resize", 1);
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-06-17 20:15:35 +08:00
|
|
|
static int fb_initialise(struct XenDevice *xendev)
|
2009-04-22 23:19:25 +08:00
|
|
|
{
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void fb_disconnect(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* FIXME: qemu can't un-init gfx display (yet?).
|
|
|
|
* Replacing the framebuffer with anonymous shared memory
|
|
|
|
* instead. This releases the guest pages and keeps qemu happy.
|
|
|
|
*/
|
|
|
|
fb->pixels = mmap(fb->pixels, fb->fbpages * XC_PAGE_SIZE,
|
|
|
|
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON,
|
|
|
|
-1, 0);
|
|
|
|
common_unbind(&fb->c);
|
|
|
|
fb->feature_update = 0;
|
|
|
|
fb->bug_trigger = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void fb_frontend_changed(struct XenDevice *xendev, const char *node)
|
|
|
|
{
|
|
|
|
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set state to Connected *again* once the frontend switched
|
|
|
|
* to connected. We must trigger the watch a second time to
|
|
|
|
* workaround a frontend bug.
|
|
|
|
*/
|
|
|
|
if (fb->bug_trigger == 0 && strcmp(node, "state") == 0 &&
|
|
|
|
xendev->fe_state == XenbusStateConnected &&
|
|
|
|
xendev->be_state == XenbusStateConnected) {
|
|
|
|
xen_be_printf(xendev, 2, "re-trigger connected (frontend bug)\n");
|
|
|
|
xen_be_set_state(xendev, XenbusStateConnected);
|
|
|
|
fb->bug_trigger = 1; /* only once */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void fb_event(struct XenDevice *xendev)
|
|
|
|
{
|
|
|
|
struct XenFB *xenfb = container_of(xendev, struct XenFB, c.xendev);
|
|
|
|
|
|
|
|
xenfb_handle_events(xenfb);
|
|
|
|
xen_be_send_notify(&xenfb->c.xendev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
struct XenDevOps xen_kbdmouse_ops = {
|
|
|
|
.size = sizeof(struct XenInput),
|
|
|
|
.init = input_init,
|
2011-06-17 20:15:35 +08:00
|
|
|
.initialise = input_initialise,
|
2011-06-17 20:16:00 +08:00
|
|
|
.connected = input_connected,
|
2009-04-22 23:19:25 +08:00
|
|
|
.disconnect = input_disconnect,
|
|
|
|
.event = input_event,
|
|
|
|
};
|
|
|
|
|
|
|
|
struct XenDevOps xen_framebuffer_ops = {
|
|
|
|
.size = sizeof(struct XenFB),
|
|
|
|
.init = fb_init,
|
2011-06-17 20:15:35 +08:00
|
|
|
.initialise = fb_initialise,
|
2009-04-22 23:19:25 +08:00
|
|
|
.disconnect = fb_disconnect,
|
|
|
|
.event = fb_event,
|
|
|
|
.frontend_changed = fb_frontend_changed,
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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++;
|
2010-03-10 18:38:54 +08:00
|
|
|
main_loop_wait(true);
|
2009-04-22 23:19:25 +08:00
|
|
|
xfb = xen_be_find_xendev("vfb", domid, 0);
|
|
|
|
xin = xen_be_find_xendev("vkbd", domid, 0);
|
|
|
|
if (!xfb || !xin) {
|
2010-03-10 18:38:54 +08:00
|
|
|
if (i < 256) {
|
|
|
|
usleep(10000);
|
2009-04-22 23:19:25 +08:00
|
|
|
goto wait_more;
|
2010-03-10 18:38:54 +08:00
|
|
|
}
|
2009-04-22 23:19:25 +08:00
|
|
|
xen_be_printf(NULL, 1, "displaystate setup failed\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vfb */
|
|
|
|
fb = container_of(xfb, struct XenFB, c.xendev);
|
|
|
|
fb->c.ds = graphic_console_init(xenfb_update,
|
|
|
|
xenfb_invalidate,
|
|
|
|
NULL,
|
|
|
|
NULL,
|
|
|
|
fb);
|
|
|
|
fb->have_console = 1;
|
|
|
|
|
|
|
|
/* vkbd */
|
|
|
|
in = container_of(xin, struct XenInput, c.xendev);
|
|
|
|
in->c.ds = fb->c.ds;
|
|
|
|
|
|
|
|
/* retry ->init() */
|
|
|
|
xen_be_check_state(xin);
|
|
|
|
xen_be_check_state(xfb);
|
|
|
|
}
|