aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 1 | /* |
| 2 | * xen paravirt framebuffer backend |
| 3 | * |
| 4 | * Copyright IBM, Corp. 2005-2006 |
| 5 | * Copyright Red Hat, Inc. 2006-2008 |
| 6 | * |
| 7 | * Authors: |
| 8 | * Anthony Liguori <aliguori@us.ibm.com>, |
| 9 | * Markus Armbruster <armbru@redhat.com>, |
| 10 | * Daniel P. Berrange <berrange@redhat.com>, |
| 11 | * Pat Campbell <plc@novell.com>, |
| 12 | * Gerd Hoffmann <kraxel@redhat.com> |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; under version 2 of the License. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License along |
Blue Swirl | 8167ee8 | 2009-07-16 20:47:01 +0000 | [diff] [blame] | 24 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 25 | */ |
| 26 | |
| 27 | #include <stdarg.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <sys/types.h> |
| 30 | #include <fcntl.h> |
| 31 | #include <unistd.h> |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 32 | #include <sys/mman.h> |
| 33 | #include <errno.h> |
| 34 | #include <stdio.h> |
| 35 | #include <string.h> |
| 36 | #include <time.h> |
| 37 | |
| 38 | #include <xs.h> |
| 39 | #include <xenctrl.h> |
| 40 | #include <xen/event_channel.h> |
| 41 | #include <xen/io/xenbus.h> |
| 42 | #include <xen/io/fbif.h> |
| 43 | #include <xen/io/kbdif.h> |
| 44 | #include <xen/io/protocols.h> |
| 45 | |
| 46 | #include "hw.h" |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 47 | #include "console.h" |
| 48 | #include "qemu-char.h" |
| 49 | #include "xen_backend.h" |
| 50 | |
| 51 | #ifndef BTN_LEFT |
| 52 | #define BTN_LEFT 0x110 /* from <linux/input.h> */ |
| 53 | #endif |
| 54 | |
| 55 | /* -------------------------------------------------------------------- */ |
| 56 | |
| 57 | struct common { |
| 58 | struct XenDevice xendev; /* must be first */ |
| 59 | void *page; |
| 60 | DisplayState *ds; |
| 61 | }; |
| 62 | |
| 63 | struct XenInput { |
| 64 | struct common c; |
| 65 | int abs_pointer_wanted; /* Whether guest supports absolute pointer */ |
| 66 | int button_state; /* Last seen pointer button state */ |
| 67 | int extended; |
| 68 | QEMUPutMouseEntry *qmouse; |
| 69 | }; |
| 70 | |
| 71 | #define UP_QUEUE 8 |
| 72 | |
| 73 | struct XenFB { |
| 74 | struct common c; |
| 75 | size_t fb_len; |
| 76 | int row_stride; |
| 77 | int depth; |
| 78 | int width; |
| 79 | int height; |
| 80 | int offset; |
| 81 | void *pixels; |
| 82 | int fbpages; |
| 83 | int feature_update; |
| 84 | int refresh_period; |
| 85 | int bug_trigger; |
| 86 | int have_console; |
| 87 | int do_resize; |
| 88 | |
| 89 | struct { |
| 90 | int x,y,w,h; |
| 91 | } up_rects[UP_QUEUE]; |
| 92 | int up_count; |
| 93 | int up_fullscreen; |
| 94 | }; |
| 95 | |
| 96 | /* -------------------------------------------------------------------- */ |
| 97 | |
| 98 | static int common_bind(struct common *c) |
| 99 | { |
| 100 | int mfn; |
| 101 | |
| 102 | if (xenstore_read_fe_int(&c->xendev, "page-ref", &mfn) == -1) |
| 103 | return -1; |
| 104 | if (xenstore_read_fe_int(&c->xendev, "event-channel", &c->xendev.remote_port) == -1) |
| 105 | return -1; |
| 106 | |
| 107 | c->page = xc_map_foreign_range(xen_xc, c->xendev.dom, |
| 108 | XC_PAGE_SIZE, |
| 109 | PROT_READ | PROT_WRITE, mfn); |
| 110 | if (c->page == NULL) |
| 111 | return -1; |
| 112 | |
| 113 | xen_be_bind_evtchn(&c->xendev); |
| 114 | xen_be_printf(&c->xendev, 1, "ring mfn %d, remote-port %d, local-port %d\n", |
| 115 | mfn, c->xendev.remote_port, c->xendev.local_port); |
| 116 | |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static void common_unbind(struct common *c) |
| 121 | { |
| 122 | xen_be_unbind_evtchn(&c->xendev); |
| 123 | if (c->page) { |
| 124 | munmap(c->page, XC_PAGE_SIZE); |
| 125 | c->page = NULL; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /* -------------------------------------------------------------------- */ |
| 130 | |
| 131 | #if 0 |
| 132 | /* |
| 133 | * These two tables are not needed any more, but left in here |
| 134 | * intentionally as documentation, to show how scancode2linux[] |
| 135 | * was generated. |
| 136 | * |
| 137 | * Tables to map from scancode to Linux input layer keycode. |
| 138 | * Scancodes are hardware-specific. These maps assumes a |
| 139 | * standard AT or PS/2 keyboard which is what QEMU feeds us. |
| 140 | */ |
| 141 | const unsigned char atkbd_set2_keycode[512] = { |
| 142 | |
| 143 | 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, |
| 144 | 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, |
| 145 | 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, |
| 146 | 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, |
| 147 | 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, |
| 148 | 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, |
| 149 | 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, |
| 150 | 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, |
| 151 | |
| 152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 153 | 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, |
| 154 | 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, |
| 155 | 159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142, |
| 156 | 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, |
| 157 | 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, |
| 158 | 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, |
| 159 | 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, |
| 160 | |
| 161 | }; |
| 162 | |
| 163 | const unsigned char atkbd_unxlate_table[128] = { |
| 164 | |
| 165 | 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, |
| 166 | 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, |
| 167 | 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, |
| 168 | 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, |
| 169 | 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, |
| 170 | 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, |
| 171 | 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, |
| 172 | 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 |
| 173 | |
| 174 | }; |
| 175 | #endif |
| 176 | |
| 177 | /* |
| 178 | * for (i = 0; i < 128; i++) { |
| 179 | * scancode2linux[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]]; |
| 180 | * scancode2linux[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80]; |
| 181 | * } |
| 182 | */ |
| 183 | static const unsigned char scancode2linux[512] = { |
| 184 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 185 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 186 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 187 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
| 188 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, |
| 189 | 80, 81, 82, 83, 99, 0, 86, 87, 88,117, 0, 0, 95,183,184,185, |
| 190 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 191 | 93, 0, 0, 89, 0, 0, 85, 91, 90, 92, 0, 94, 0,124,121, 0, |
| 192 | |
| 193 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 194 | 165, 0, 0, 0, 0, 0, 0, 0, 0,163, 0, 0, 96, 97, 0, 0, |
| 195 | 113,140,164, 0,166, 0, 0, 0, 0, 0,255, 0, 0, 0,114, 0, |
| 196 | 115, 0,150, 0, 0, 98,255, 99,100, 0, 0, 0, 0, 0, 0, 0, |
| 197 | 0, 0, 0, 0, 0,119,119,102,103,104, 0,105,112,106,118,107, |
| 198 | 108,109,110,111, 0, 0, 0, 0, 0, 0, 0,125,126,127,116,142, |
| 199 | 0, 0, 0,143, 0,217,156,173,128,159,158,157,155,226, 0,112, |
| 200 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 201 | }; |
| 202 | |
| 203 | /* Send an event to the keyboard frontend driver */ |
| 204 | static int xenfb_kbd_event(struct XenInput *xenfb, |
| 205 | union xenkbd_in_event *event) |
| 206 | { |
| 207 | struct xenkbd_page *page = xenfb->c.page; |
| 208 | uint32_t prod; |
| 209 | |
| 210 | if (xenfb->c.xendev.be_state != XenbusStateConnected) |
| 211 | return 0; |
| 212 | if (!page) |
| 213 | return 0; |
| 214 | |
| 215 | prod = page->in_prod; |
| 216 | if (prod - page->in_cons == XENKBD_IN_RING_LEN) { |
| 217 | errno = EAGAIN; |
| 218 | return -1; |
| 219 | } |
| 220 | |
| 221 | xen_mb(); /* ensure ring space available */ |
| 222 | XENKBD_IN_RING_REF(page, prod) = *event; |
| 223 | xen_wmb(); /* ensure ring contents visible */ |
| 224 | page->in_prod = prod + 1; |
| 225 | return xen_be_send_notify(&xenfb->c.xendev); |
| 226 | } |
| 227 | |
| 228 | /* Send a keyboard (or mouse button) event */ |
| 229 | static int xenfb_send_key(struct XenInput *xenfb, bool down, int keycode) |
| 230 | { |
| 231 | union xenkbd_in_event event; |
| 232 | |
| 233 | memset(&event, 0, XENKBD_IN_EVENT_SIZE); |
| 234 | event.type = XENKBD_TYPE_KEY; |
| 235 | event.key.pressed = down ? 1 : 0; |
| 236 | event.key.keycode = keycode; |
| 237 | |
| 238 | return xenfb_kbd_event(xenfb, &event); |
| 239 | } |
| 240 | |
| 241 | /* Send a relative mouse movement event */ |
| 242 | static int xenfb_send_motion(struct XenInput *xenfb, |
| 243 | int rel_x, int rel_y, int rel_z) |
| 244 | { |
| 245 | union xenkbd_in_event event; |
| 246 | |
| 247 | memset(&event, 0, XENKBD_IN_EVENT_SIZE); |
| 248 | event.type = XENKBD_TYPE_MOTION; |
| 249 | event.motion.rel_x = rel_x; |
| 250 | event.motion.rel_y = rel_y; |
| 251 | #if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030207 |
| 252 | event.motion.rel_z = rel_z; |
| 253 | #endif |
| 254 | |
| 255 | return xenfb_kbd_event(xenfb, &event); |
| 256 | } |
| 257 | |
| 258 | /* Send an absolute mouse movement event */ |
| 259 | static int xenfb_send_position(struct XenInput *xenfb, |
| 260 | int abs_x, int abs_y, int z) |
| 261 | { |
| 262 | union xenkbd_in_event event; |
| 263 | |
| 264 | memset(&event, 0, XENKBD_IN_EVENT_SIZE); |
| 265 | event.type = XENKBD_TYPE_POS; |
| 266 | event.pos.abs_x = abs_x; |
| 267 | event.pos.abs_y = abs_y; |
| 268 | #if __XEN_LATEST_INTERFACE_VERSION__ == 0x00030207 |
| 269 | event.pos.abs_z = z; |
| 270 | #endif |
| 271 | #if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030208 |
| 272 | event.pos.rel_z = z; |
| 273 | #endif |
| 274 | |
| 275 | return xenfb_kbd_event(xenfb, &event); |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * Send a key event from the client to the guest OS |
| 280 | * QEMU gives us a raw scancode from an AT / PS/2 style keyboard. |
| 281 | * We have to turn this into a Linux Input layer keycode. |
| 282 | * |
| 283 | * Extra complexity from the fact that with extended scancodes |
| 284 | * (like those produced by arrow keys) this method gets called |
| 285 | * twice, but we only want to send a single event. So we have to |
| 286 | * track the '0xe0' scancode state & collapse the extended keys |
| 287 | * as needed. |
| 288 | * |
| 289 | * Wish we could just send scancodes straight to the guest which |
| 290 | * already has code for dealing with this... |
| 291 | */ |
| 292 | static void xenfb_key_event(void *opaque, int scancode) |
| 293 | { |
| 294 | struct XenInput *xenfb = opaque; |
| 295 | int down = 1; |
| 296 | |
| 297 | if (scancode == 0xe0) { |
| 298 | xenfb->extended = 1; |
| 299 | return; |
| 300 | } else if (scancode & 0x80) { |
| 301 | scancode &= 0x7f; |
| 302 | down = 0; |
| 303 | } |
| 304 | if (xenfb->extended) { |
| 305 | scancode |= 0x80; |
| 306 | xenfb->extended = 0; |
| 307 | } |
| 308 | xenfb_send_key(xenfb, down, scancode2linux[scancode]); |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * Send a mouse event from the client to the guest OS |
| 313 | * |
| 314 | * The QEMU mouse can be in either relative, or absolute mode. |
| 315 | * Movement is sent separately from button state, which has to |
| 316 | * be encoded as virtual key events. We also don't actually get |
| 317 | * given any button up/down events, so have to track changes in |
| 318 | * the button state. |
| 319 | */ |
| 320 | static void xenfb_mouse_event(void *opaque, |
| 321 | int dx, int dy, int dz, int button_state) |
| 322 | { |
| 323 | struct XenInput *xenfb = opaque; |
| 324 | int dw = ds_get_width(xenfb->c.ds); |
| 325 | int dh = ds_get_height(xenfb->c.ds); |
| 326 | int i; |
| 327 | |
| 328 | if (xenfb->abs_pointer_wanted) |
| 329 | xenfb_send_position(xenfb, |
| 330 | dx * (dw - 1) / 0x7fff, |
| 331 | dy * (dh - 1) / 0x7fff, |
| 332 | dz); |
| 333 | else |
| 334 | xenfb_send_motion(xenfb, dx, dy, dz); |
| 335 | |
| 336 | for (i = 0 ; i < 8 ; i++) { |
| 337 | int lastDown = xenfb->button_state & (1 << i); |
| 338 | int down = button_state & (1 << i); |
| 339 | if (down == lastDown) |
| 340 | continue; |
| 341 | |
| 342 | if (xenfb_send_key(xenfb, down, BTN_LEFT+i) < 0) |
| 343 | return; |
| 344 | } |
| 345 | xenfb->button_state = button_state; |
| 346 | } |
| 347 | |
| 348 | static int input_init(struct XenDevice *xendev) |
| 349 | { |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 350 | xenstore_write_be_int(xendev, "feature-abs-pointer", 1); |
| 351 | return 0; |
| 352 | } |
| 353 | |
| 354 | static int input_connect(struct XenDevice *xendev) |
| 355 | { |
| 356 | struct XenInput *in = container_of(xendev, struct XenInput, c.xendev); |
| 357 | int rc; |
| 358 | |
| 359 | if (xenstore_read_fe_int(xendev, "request-abs-pointer", |
| 360 | &in->abs_pointer_wanted) == -1) |
| 361 | in->abs_pointer_wanted = 0; |
| 362 | |
Stefano Stabellini | 37cdfcf | 2011-06-24 17:36:11 +0100 | [diff] [blame] | 363 | if (!in->c.ds) { |
| 364 | char *vfb = xenstore_read_str(NULL, "device/vfb"); |
| 365 | if (vfb == NULL) { |
| 366 | /* there is no vfb, run vkbd on its own */ |
| 367 | in->c.ds = get_displaystate(); |
| 368 | } else { |
| 369 | qemu_free(vfb); |
| 370 | xen_be_printf(xendev, 1, "ds not set (yet)\n"); |
| 371 | return -1; |
| 372 | } |
| 373 | } |
| 374 | |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 375 | rc = common_bind(&in->c); |
| 376 | if (rc != 0) |
| 377 | return rc; |
| 378 | |
| 379 | qemu_add_kbd_event_handler(xenfb_key_event, in); |
| 380 | in->qmouse = qemu_add_mouse_event_handler(xenfb_mouse_event, in, |
| 381 | in->abs_pointer_wanted, |
| 382 | "Xen PVFB Mouse"); |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | static void input_disconnect(struct XenDevice *xendev) |
| 387 | { |
| 388 | struct XenInput *in = container_of(xendev, struct XenInput, c.xendev); |
| 389 | |
| 390 | if (in->qmouse) { |
| 391 | qemu_remove_mouse_event_handler(in->qmouse); |
| 392 | in->qmouse = NULL; |
| 393 | } |
| 394 | qemu_add_kbd_event_handler(NULL, NULL); |
| 395 | common_unbind(&in->c); |
| 396 | } |
| 397 | |
| 398 | static void input_event(struct XenDevice *xendev) |
| 399 | { |
| 400 | struct XenInput *xenfb = container_of(xendev, struct XenInput, c.xendev); |
| 401 | struct xenkbd_page *page = xenfb->c.page; |
| 402 | |
| 403 | /* We don't understand any keyboard events, so just ignore them. */ |
| 404 | if (page->out_prod == page->out_cons) |
| 405 | return; |
| 406 | page->out_cons = page->out_prod; |
| 407 | xen_be_send_notify(&xenfb->c.xendev); |
| 408 | } |
| 409 | |
| 410 | /* -------------------------------------------------------------------- */ |
| 411 | |
| 412 | static void xenfb_copy_mfns(int mode, int count, unsigned long *dst, void *src) |
| 413 | { |
| 414 | uint32_t *src32 = src; |
| 415 | uint64_t *src64 = src; |
| 416 | int i; |
| 417 | |
| 418 | for (i = 0; i < count; i++) |
| 419 | dst[i] = (mode == 32) ? src32[i] : src64[i]; |
| 420 | } |
| 421 | |
| 422 | static int xenfb_map_fb(struct XenFB *xenfb) |
| 423 | { |
| 424 | struct xenfb_page *page = xenfb->c.page; |
| 425 | char *protocol = xenfb->c.xendev.protocol; |
| 426 | int n_fbdirs; |
| 427 | unsigned long *pgmfns = NULL; |
| 428 | unsigned long *fbmfns = NULL; |
| 429 | void *map, *pd; |
| 430 | int mode, ret = -1; |
| 431 | |
| 432 | /* default to native */ |
| 433 | pd = page->pd; |
| 434 | mode = sizeof(unsigned long) * 8; |
| 435 | |
| 436 | if (!protocol) { |
| 437 | /* |
| 438 | * Undefined protocol, some guesswork needed. |
| 439 | * |
| 440 | * Old frontends which don't set the protocol use |
| 441 | * one page directory only, thus pd[1] must be zero. |
| 442 | * pd[1] of the 32bit struct layout and the lower |
| 443 | * 32 bits of pd[0] of the 64bit struct layout have |
| 444 | * the same location, so we can check that ... |
| 445 | */ |
| 446 | uint32_t *ptr32 = NULL; |
| 447 | uint32_t *ptr64 = NULL; |
| 448 | #if defined(__i386__) |
| 449 | ptr32 = (void*)page->pd; |
| 450 | ptr64 = ((void*)page->pd) + 4; |
| 451 | #elif defined(__x86_64__) |
| 452 | ptr32 = ((void*)page->pd) - 4; |
| 453 | ptr64 = (void*)page->pd; |
| 454 | #endif |
| 455 | if (ptr32) { |
| 456 | if (ptr32[1] == 0) { |
| 457 | mode = 32; |
| 458 | pd = ptr32; |
| 459 | } else { |
| 460 | mode = 64; |
| 461 | pd = ptr64; |
| 462 | } |
| 463 | } |
| 464 | #if defined(__x86_64__) |
| 465 | } else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_32) == 0) { |
| 466 | /* 64bit dom0, 32bit domU */ |
| 467 | mode = 32; |
| 468 | pd = ((void*)page->pd) - 4; |
| 469 | #elif defined(__i386__) |
| 470 | } else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_64) == 0) { |
| 471 | /* 32bit dom0, 64bit domU */ |
| 472 | mode = 64; |
| 473 | pd = ((void*)page->pd) + 4; |
| 474 | #endif |
| 475 | } |
| 476 | |
| 477 | if (xenfb->pixels) { |
| 478 | munmap(xenfb->pixels, xenfb->fbpages * XC_PAGE_SIZE); |
| 479 | xenfb->pixels = NULL; |
| 480 | } |
| 481 | |
| 482 | xenfb->fbpages = (xenfb->fb_len + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE; |
| 483 | n_fbdirs = xenfb->fbpages * mode / 8; |
| 484 | n_fbdirs = (n_fbdirs + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE; |
| 485 | |
| 486 | pgmfns = qemu_mallocz(sizeof(unsigned long) * n_fbdirs); |
| 487 | fbmfns = qemu_mallocz(sizeof(unsigned long) * xenfb->fbpages); |
| 488 | |
| 489 | xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd); |
| 490 | map = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom, |
| 491 | PROT_READ, pgmfns, n_fbdirs); |
| 492 | if (map == NULL) |
| 493 | goto out; |
| 494 | xenfb_copy_mfns(mode, xenfb->fbpages, fbmfns, map); |
| 495 | munmap(map, n_fbdirs * XC_PAGE_SIZE); |
| 496 | |
| 497 | xenfb->pixels = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom, |
| 498 | PROT_READ | PROT_WRITE, fbmfns, xenfb->fbpages); |
| 499 | if (xenfb->pixels == NULL) |
| 500 | goto out; |
| 501 | |
| 502 | ret = 0; /* all is fine */ |
| 503 | |
| 504 | out: |
| 505 | qemu_free(pgmfns); |
| 506 | qemu_free(fbmfns); |
| 507 | return ret; |
| 508 | } |
| 509 | |
| 510 | static int xenfb_configure_fb(struct XenFB *xenfb, size_t fb_len_lim, |
| 511 | int width, int height, int depth, |
| 512 | size_t fb_len, int offset, int row_stride) |
| 513 | { |
| 514 | size_t mfn_sz = sizeof(*((struct xenfb_page *)0)->pd); |
| 515 | size_t pd_len = sizeof(((struct xenfb_page *)0)->pd) / mfn_sz; |
| 516 | size_t fb_pages = pd_len * XC_PAGE_SIZE / mfn_sz; |
| 517 | size_t fb_len_max = fb_pages * XC_PAGE_SIZE; |
| 518 | int max_width, max_height; |
| 519 | |
| 520 | if (fb_len_lim > fb_len_max) { |
| 521 | xen_be_printf(&xenfb->c.xendev, 0, "fb size limit %zu exceeds %zu, corrected\n", |
| 522 | fb_len_lim, fb_len_max); |
| 523 | fb_len_lim = fb_len_max; |
| 524 | } |
| 525 | if (fb_len_lim && fb_len > fb_len_lim) { |
| 526 | xen_be_printf(&xenfb->c.xendev, 0, "frontend fb size %zu limited to %zu\n", |
| 527 | fb_len, fb_len_lim); |
| 528 | fb_len = fb_len_lim; |
| 529 | } |
| 530 | if (depth != 8 && depth != 16 && depth != 24 && depth != 32) { |
| 531 | xen_be_printf(&xenfb->c.xendev, 0, "can't handle frontend fb depth %d\n", |
| 532 | depth); |
| 533 | return -1; |
| 534 | } |
| 535 | if (row_stride <= 0 || row_stride > fb_len) { |
| 536 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend stride %d\n", row_stride); |
| 537 | return -1; |
| 538 | } |
| 539 | max_width = row_stride / (depth / 8); |
| 540 | if (width < 0 || width > max_width) { |
| 541 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend width %d limited to %d\n", |
| 542 | width, max_width); |
| 543 | width = max_width; |
| 544 | } |
| 545 | if (offset < 0 || offset >= fb_len) { |
| 546 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend offset %d (max %zu)\n", |
| 547 | offset, fb_len - 1); |
| 548 | return -1; |
| 549 | } |
| 550 | max_height = (fb_len - offset) / row_stride; |
| 551 | if (height < 0 || height > max_height) { |
| 552 | xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend height %d limited to %d\n", |
| 553 | height, max_height); |
| 554 | height = max_height; |
| 555 | } |
| 556 | xenfb->fb_len = fb_len; |
| 557 | xenfb->row_stride = row_stride; |
| 558 | xenfb->depth = depth; |
| 559 | xenfb->width = width; |
| 560 | xenfb->height = height; |
| 561 | xenfb->offset = offset; |
| 562 | xenfb->up_fullscreen = 1; |
| 563 | xenfb->do_resize = 1; |
| 564 | xen_be_printf(&xenfb->c.xendev, 1, "framebuffer %dx%dx%d offset %d stride %d\n", |
| 565 | width, height, depth, offset, row_stride); |
| 566 | return 0; |
| 567 | } |
| 568 | |
| 569 | /* A convenient function for munging pixels between different depths */ |
| 570 | #define BLT(SRC_T,DST_T,RSB,GSB,BSB,RDB,GDB,BDB) \ |
| 571 | for (line = y ; line < (y+h) ; line++) { \ |
| 572 | SRC_T *src = (SRC_T *)(xenfb->pixels \ |
| 573 | + xenfb->offset \ |
| 574 | + (line * xenfb->row_stride) \ |
| 575 | + (x * xenfb->depth / 8)); \ |
| 576 | DST_T *dst = (DST_T *)(data \ |
| 577 | + (line * linesize) \ |
| 578 | + (x * bpp / 8)); \ |
| 579 | int col; \ |
| 580 | const int RSS = 32 - (RSB + GSB + BSB); \ |
| 581 | const int GSS = 32 - (GSB + BSB); \ |
| 582 | const int BSS = 32 - (BSB); \ |
| 583 | const uint32_t RSM = (~0U) << (32 - RSB); \ |
| 584 | const uint32_t GSM = (~0U) << (32 - GSB); \ |
| 585 | const uint32_t BSM = (~0U) << (32 - BSB); \ |
| 586 | const int RDS = 32 - (RDB + GDB + BDB); \ |
| 587 | const int GDS = 32 - (GDB + BDB); \ |
| 588 | const int BDS = 32 - (BDB); \ |
| 589 | const uint32_t RDM = (~0U) << (32 - RDB); \ |
| 590 | const uint32_t GDM = (~0U) << (32 - GDB); \ |
| 591 | const uint32_t BDM = (~0U) << (32 - BDB); \ |
| 592 | for (col = x ; col < (x+w) ; col++) { \ |
| 593 | uint32_t spix = *src; \ |
| 594 | *dst = (((spix << RSS) & RSM & RDM) >> RDS) | \ |
| 595 | (((spix << GSS) & GSM & GDM) >> GDS) | \ |
| 596 | (((spix << BSS) & BSM & BDM) >> BDS); \ |
| 597 | src = (SRC_T *) ((unsigned long) src + xenfb->depth / 8); \ |
| 598 | dst = (DST_T *) ((unsigned long) dst + bpp / 8); \ |
| 599 | } \ |
| 600 | } |
| 601 | |
| 602 | |
| 603 | /* |
| 604 | * This copies data from the guest framebuffer region, into QEMU's |
| 605 | * displaysurface. qemu uses 16 or 32 bpp. In case the pv framebuffer |
| 606 | * uses something else we must convert and copy, otherwise we can |
| 607 | * supply the buffer directly and no thing here. |
| 608 | */ |
| 609 | static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h) |
| 610 | { |
| 611 | int line, oops = 0; |
| 612 | int bpp = ds_get_bits_per_pixel(xenfb->c.ds); |
| 613 | int linesize = ds_get_linesize(xenfb->c.ds); |
| 614 | uint8_t *data = ds_get_data(xenfb->c.ds); |
| 615 | |
| 616 | if (!is_buffer_shared(xenfb->c.ds->surface)) { |
| 617 | switch (xenfb->depth) { |
| 618 | case 8: |
| 619 | if (bpp == 16) { |
| 620 | BLT(uint8_t, uint16_t, 3, 3, 2, 5, 6, 5); |
| 621 | } else if (bpp == 32) { |
| 622 | BLT(uint8_t, uint32_t, 3, 3, 2, 8, 8, 8); |
| 623 | } else { |
| 624 | oops = 1; |
| 625 | } |
| 626 | break; |
| 627 | case 24: |
| 628 | if (bpp == 16) { |
| 629 | BLT(uint32_t, uint16_t, 8, 8, 8, 5, 6, 5); |
| 630 | } else if (bpp == 32) { |
| 631 | BLT(uint32_t, uint32_t, 8, 8, 8, 8, 8, 8); |
| 632 | } else { |
| 633 | oops = 1; |
| 634 | } |
| 635 | break; |
| 636 | default: |
| 637 | oops = 1; |
| 638 | } |
| 639 | } |
| 640 | if (oops) /* should not happen */ |
| 641 | xen_be_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d bpp?\n", |
| 642 | __FUNCTION__, xenfb->depth, bpp); |
| 643 | |
| 644 | dpy_update(xenfb->c.ds, x, y, w, h); |
| 645 | } |
| 646 | |
| 647 | #ifdef XENFB_TYPE_REFRESH_PERIOD |
| 648 | static int xenfb_queue_full(struct XenFB *xenfb) |
| 649 | { |
| 650 | struct xenfb_page *page = xenfb->c.page; |
| 651 | uint32_t cons, prod; |
| 652 | |
| 653 | if (!page) |
| 654 | return 1; |
| 655 | |
| 656 | prod = page->in_prod; |
| 657 | cons = page->in_cons; |
| 658 | return prod - cons == XENFB_IN_RING_LEN; |
| 659 | } |
| 660 | |
| 661 | static void xenfb_send_event(struct XenFB *xenfb, union xenfb_in_event *event) |
| 662 | { |
| 663 | uint32_t prod; |
| 664 | struct xenfb_page *page = xenfb->c.page; |
| 665 | |
| 666 | prod = page->in_prod; |
| 667 | /* caller ensures !xenfb_queue_full() */ |
| 668 | xen_mb(); /* ensure ring space available */ |
| 669 | XENFB_IN_RING_REF(page, prod) = *event; |
| 670 | xen_wmb(); /* ensure ring contents visible */ |
| 671 | page->in_prod = prod + 1; |
| 672 | |
| 673 | xen_be_send_notify(&xenfb->c.xendev); |
| 674 | } |
| 675 | |
| 676 | static void xenfb_send_refresh_period(struct XenFB *xenfb, int period) |
| 677 | { |
| 678 | union xenfb_in_event event; |
| 679 | |
| 680 | memset(&event, 0, sizeof(event)); |
| 681 | event.type = XENFB_TYPE_REFRESH_PERIOD; |
| 682 | event.refresh_period.period = period; |
| 683 | xenfb_send_event(xenfb, &event); |
| 684 | } |
| 685 | #endif |
| 686 | |
| 687 | /* |
| 688 | * Periodic update of display. |
| 689 | * Also transmit the refresh interval to the frontend. |
| 690 | * |
| 691 | * Never ever do any qemu display operations |
| 692 | * (resize, screen update) outside this function. |
| 693 | * Our screen might be inactive. When asked for |
| 694 | * an update we know it is active. |
| 695 | */ |
| 696 | static void xenfb_update(void *opaque) |
| 697 | { |
| 698 | struct XenFB *xenfb = opaque; |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 699 | int i; |
| 700 | |
| 701 | if (xenfb->c.xendev.be_state != XenbusStateConnected) |
| 702 | return; |
| 703 | |
| 704 | if (xenfb->feature_update) { |
| 705 | #ifdef XENFB_TYPE_REFRESH_PERIOD |
Blue Swirl | c433bed | 2009-04-25 07:31:43 +0000 | [diff] [blame] | 706 | struct DisplayChangeListener *l; |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 707 | int period = 99999999; |
| 708 | int idle = 1; |
| 709 | |
| 710 | if (xenfb_queue_full(xenfb)) |
| 711 | return; |
| 712 | |
| 713 | for (l = xenfb->c.ds->listeners; l != NULL; l = l->next) { |
| 714 | if (l->idle) |
| 715 | continue; |
| 716 | idle = 0; |
| 717 | if (!l->gui_timer_interval) { |
| 718 | if (period > GUI_REFRESH_INTERVAL) |
| 719 | period = GUI_REFRESH_INTERVAL; |
| 720 | } else { |
| 721 | if (period > l->gui_timer_interval) |
| 722 | period = l->gui_timer_interval; |
| 723 | } |
| 724 | } |
| 725 | if (idle) |
| 726 | period = XENFB_NO_REFRESH; |
| 727 | |
| 728 | if (xenfb->refresh_period != period) { |
| 729 | xenfb_send_refresh_period(xenfb, period); |
| 730 | xenfb->refresh_period = period; |
| 731 | xen_be_printf(&xenfb->c.xendev, 1, "refresh period: %d\n", period); |
| 732 | } |
| 733 | #else |
| 734 | ; /* nothing */ |
| 735 | #endif |
| 736 | } else { |
| 737 | /* we don't get update notifications, thus use the |
| 738 | * sledge hammer approach ... */ |
| 739 | xenfb->up_fullscreen = 1; |
| 740 | } |
| 741 | |
| 742 | /* resize if needed */ |
| 743 | if (xenfb->do_resize) { |
| 744 | xenfb->do_resize = 0; |
| 745 | switch (xenfb->depth) { |
| 746 | case 16: |
| 747 | case 32: |
| 748 | /* console.c supported depth -> buffer can be used directly */ |
| 749 | qemu_free_displaysurface(xenfb->c.ds); |
| 750 | xenfb->c.ds->surface = qemu_create_displaysurface_from |
| 751 | (xenfb->width, xenfb->height, xenfb->depth, |
| 752 | xenfb->row_stride, xenfb->pixels + xenfb->offset); |
| 753 | break; |
| 754 | default: |
| 755 | /* we must convert stuff */ |
| 756 | qemu_resize_displaysurface(xenfb->c.ds, xenfb->width, xenfb->height); |
| 757 | break; |
| 758 | } |
| 759 | xen_be_printf(&xenfb->c.xendev, 1, "update: resizing: %dx%d @ %d bpp%s\n", |
| 760 | xenfb->width, xenfb->height, xenfb->depth, |
| 761 | is_buffer_shared(xenfb->c.ds->surface) ? " (shared)" : ""); |
| 762 | dpy_resize(xenfb->c.ds); |
| 763 | xenfb->up_fullscreen = 1; |
| 764 | } |
| 765 | |
| 766 | /* run queued updates */ |
| 767 | if (xenfb->up_fullscreen) { |
| 768 | xen_be_printf(&xenfb->c.xendev, 3, "update: fullscreen\n"); |
| 769 | xenfb_guest_copy(xenfb, 0, 0, xenfb->width, xenfb->height); |
| 770 | } else if (xenfb->up_count) { |
| 771 | xen_be_printf(&xenfb->c.xendev, 3, "update: %d rects\n", xenfb->up_count); |
| 772 | for (i = 0; i < xenfb->up_count; i++) |
| 773 | xenfb_guest_copy(xenfb, |
| 774 | xenfb->up_rects[i].x, |
| 775 | xenfb->up_rects[i].y, |
| 776 | xenfb->up_rects[i].w, |
| 777 | xenfb->up_rects[i].h); |
| 778 | } else { |
| 779 | xen_be_printf(&xenfb->c.xendev, 3, "update: nothing\n"); |
| 780 | } |
| 781 | xenfb->up_count = 0; |
| 782 | xenfb->up_fullscreen = 0; |
| 783 | } |
| 784 | |
| 785 | /* QEMU display state changed, so refresh the framebuffer copy */ |
| 786 | static void xenfb_invalidate(void *opaque) |
| 787 | { |
| 788 | struct XenFB *xenfb = opaque; |
| 789 | xenfb->up_fullscreen = 1; |
| 790 | } |
| 791 | |
| 792 | static void xenfb_handle_events(struct XenFB *xenfb) |
| 793 | { |
| 794 | uint32_t prod, cons; |
| 795 | struct xenfb_page *page = xenfb->c.page; |
| 796 | |
| 797 | prod = page->out_prod; |
| 798 | if (prod == page->out_cons) |
| 799 | return; |
| 800 | xen_rmb(); /* ensure we see ring contents up to prod */ |
| 801 | for (cons = page->out_cons; cons != prod; cons++) { |
| 802 | union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons); |
| 803 | int x, y, w, h; |
| 804 | |
| 805 | switch (event->type) { |
| 806 | case XENFB_TYPE_UPDATE: |
| 807 | if (xenfb->up_count == UP_QUEUE) |
| 808 | xenfb->up_fullscreen = 1; |
| 809 | if (xenfb->up_fullscreen) |
| 810 | break; |
| 811 | x = MAX(event->update.x, 0); |
| 812 | y = MAX(event->update.y, 0); |
| 813 | w = MIN(event->update.width, xenfb->width - x); |
| 814 | h = MIN(event->update.height, xenfb->height - y); |
| 815 | if (w < 0 || h < 0) { |
| 816 | xen_be_printf(&xenfb->c.xendev, 1, "bogus update ignored\n"); |
| 817 | break; |
| 818 | } |
| 819 | if (x != event->update.x || |
| 820 | y != event->update.y || |
| 821 | w != event->update.width || |
| 822 | h != event->update.height) { |
| 823 | xen_be_printf(&xenfb->c.xendev, 1, "bogus update clipped\n"); |
| 824 | } |
| 825 | if (w == xenfb->width && h > xenfb->height / 2) { |
| 826 | /* scroll detector: updated more than 50% of the lines, |
| 827 | * don't bother keeping track of the rectangles then */ |
| 828 | xenfb->up_fullscreen = 1; |
| 829 | } else { |
| 830 | xenfb->up_rects[xenfb->up_count].x = x; |
| 831 | xenfb->up_rects[xenfb->up_count].y = y; |
| 832 | xenfb->up_rects[xenfb->up_count].w = w; |
| 833 | xenfb->up_rects[xenfb->up_count].h = h; |
| 834 | xenfb->up_count++; |
| 835 | } |
| 836 | break; |
| 837 | #ifdef XENFB_TYPE_RESIZE |
| 838 | case XENFB_TYPE_RESIZE: |
| 839 | if (xenfb_configure_fb(xenfb, xenfb->fb_len, |
| 840 | event->resize.width, |
| 841 | event->resize.height, |
| 842 | event->resize.depth, |
| 843 | xenfb->fb_len, |
| 844 | event->resize.offset, |
| 845 | event->resize.stride) < 0) |
| 846 | break; |
| 847 | xenfb_invalidate(xenfb); |
| 848 | break; |
| 849 | #endif |
| 850 | } |
| 851 | } |
| 852 | xen_mb(); /* ensure we're done with ring contents */ |
| 853 | page->out_cons = cons; |
| 854 | } |
| 855 | |
| 856 | static int fb_init(struct XenDevice *xendev) |
| 857 | { |
| 858 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); |
| 859 | |
| 860 | fb->refresh_period = -1; |
| 861 | |
| 862 | #ifdef XENFB_TYPE_RESIZE |
| 863 | xenstore_write_be_int(xendev, "feature-resize", 1); |
| 864 | #endif |
| 865 | return 0; |
| 866 | } |
| 867 | |
| 868 | static int fb_connect(struct XenDevice *xendev) |
| 869 | { |
| 870 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); |
| 871 | struct xenfb_page *fb_page; |
| 872 | int videoram; |
| 873 | int rc; |
| 874 | |
| 875 | if (xenstore_read_fe_int(xendev, "videoram", &videoram) == -1) |
| 876 | videoram = 0; |
| 877 | |
| 878 | rc = common_bind(&fb->c); |
| 879 | if (rc != 0) |
| 880 | return rc; |
| 881 | |
| 882 | fb_page = fb->c.page; |
| 883 | rc = xenfb_configure_fb(fb, videoram * 1024 * 1024U, |
| 884 | fb_page->width, fb_page->height, fb_page->depth, |
| 885 | fb_page->mem_length, 0, fb_page->line_length); |
| 886 | if (rc != 0) |
| 887 | return rc; |
| 888 | |
| 889 | rc = xenfb_map_fb(fb); |
| 890 | if (rc != 0) |
| 891 | return rc; |
| 892 | |
| 893 | #if 0 /* handled in xen_init_display() for now */ |
| 894 | if (!fb->have_console) { |
| 895 | fb->c.ds = graphic_console_init(xenfb_update, |
| 896 | xenfb_invalidate, |
| 897 | NULL, |
| 898 | NULL, |
| 899 | fb); |
| 900 | fb->have_console = 1; |
| 901 | } |
| 902 | #endif |
| 903 | |
| 904 | if (xenstore_read_fe_int(xendev, "feature-update", &fb->feature_update) == -1) |
| 905 | fb->feature_update = 0; |
| 906 | if (fb->feature_update) |
| 907 | xenstore_write_be_int(xendev, "request-update", 1); |
| 908 | |
| 909 | xen_be_printf(xendev, 1, "feature-update=%d, videoram=%d\n", |
| 910 | fb->feature_update, videoram); |
| 911 | return 0; |
| 912 | } |
| 913 | |
| 914 | static void fb_disconnect(struct XenDevice *xendev) |
| 915 | { |
| 916 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); |
| 917 | |
| 918 | /* |
| 919 | * FIXME: qemu can't un-init gfx display (yet?). |
| 920 | * Replacing the framebuffer with anonymous shared memory |
| 921 | * instead. This releases the guest pages and keeps qemu happy. |
| 922 | */ |
| 923 | fb->pixels = mmap(fb->pixels, fb->fbpages * XC_PAGE_SIZE, |
| 924 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, |
| 925 | -1, 0); |
| 926 | common_unbind(&fb->c); |
| 927 | fb->feature_update = 0; |
| 928 | fb->bug_trigger = 0; |
| 929 | } |
| 930 | |
| 931 | static void fb_frontend_changed(struct XenDevice *xendev, const char *node) |
| 932 | { |
| 933 | struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev); |
| 934 | |
| 935 | /* |
| 936 | * Set state to Connected *again* once the frontend switched |
| 937 | * to connected. We must trigger the watch a second time to |
| 938 | * workaround a frontend bug. |
| 939 | */ |
| 940 | if (fb->bug_trigger == 0 && strcmp(node, "state") == 0 && |
| 941 | xendev->fe_state == XenbusStateConnected && |
| 942 | xendev->be_state == XenbusStateConnected) { |
| 943 | xen_be_printf(xendev, 2, "re-trigger connected (frontend bug)\n"); |
| 944 | xen_be_set_state(xendev, XenbusStateConnected); |
| 945 | fb->bug_trigger = 1; /* only once */ |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | static void fb_event(struct XenDevice *xendev) |
| 950 | { |
| 951 | struct XenFB *xenfb = container_of(xendev, struct XenFB, c.xendev); |
| 952 | |
| 953 | xenfb_handle_events(xenfb); |
| 954 | xen_be_send_notify(&xenfb->c.xendev); |
| 955 | } |
| 956 | |
| 957 | /* -------------------------------------------------------------------- */ |
| 958 | |
| 959 | struct XenDevOps xen_kbdmouse_ops = { |
| 960 | .size = sizeof(struct XenInput), |
| 961 | .init = input_init, |
| 962 | .connect = input_connect, |
| 963 | .disconnect = input_disconnect, |
| 964 | .event = input_event, |
| 965 | }; |
| 966 | |
| 967 | struct XenDevOps xen_framebuffer_ops = { |
| 968 | .size = sizeof(struct XenFB), |
| 969 | .init = fb_init, |
| 970 | .connect = fb_connect, |
| 971 | .disconnect = fb_disconnect, |
| 972 | .event = fb_event, |
| 973 | .frontend_changed = fb_frontend_changed, |
| 974 | }; |
| 975 | |
| 976 | /* |
| 977 | * FIXME/TODO: Kill this. |
| 978 | * Temporary needed while DisplayState reorganization is in flight. |
| 979 | */ |
| 980 | void xen_init_display(int domid) |
| 981 | { |
| 982 | struct XenDevice *xfb, *xin; |
| 983 | struct XenFB *fb; |
| 984 | struct XenInput *in; |
| 985 | int i = 0; |
| 986 | |
| 987 | wait_more: |
| 988 | i++; |
Paolo Bonzini | d6f4ade | 2010-03-10 11:38:54 +0100 | [diff] [blame] | 989 | main_loop_wait(true); |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 990 | xfb = xen_be_find_xendev("vfb", domid, 0); |
| 991 | xin = xen_be_find_xendev("vkbd", domid, 0); |
| 992 | if (!xfb || !xin) { |
Paolo Bonzini | d6f4ade | 2010-03-10 11:38:54 +0100 | [diff] [blame] | 993 | if (i < 256) { |
| 994 | usleep(10000); |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 995 | goto wait_more; |
Paolo Bonzini | d6f4ade | 2010-03-10 11:38:54 +0100 | [diff] [blame] | 996 | } |
aliguori | e7151f8 | 2009-04-22 15:19:25 +0000 | [diff] [blame] | 997 | xen_be_printf(NULL, 1, "displaystate setup failed\n"); |
| 998 | return; |
| 999 | } |
| 1000 | |
| 1001 | /* vfb */ |
| 1002 | fb = container_of(xfb, struct XenFB, c.xendev); |
| 1003 | fb->c.ds = graphic_console_init(xenfb_update, |
| 1004 | xenfb_invalidate, |
| 1005 | NULL, |
| 1006 | NULL, |
| 1007 | fb); |
| 1008 | fb->have_console = 1; |
| 1009 | |
| 1010 | /* vkbd */ |
| 1011 | in = container_of(xin, struct XenInput, c.xendev); |
| 1012 | in->c.ds = fb->c.ds; |
| 1013 | |
| 1014 | /* retry ->init() */ |
| 1015 | xen_be_check_state(xin); |
| 1016 | xen_be_check_state(xfb); |
| 1017 | } |