struct cons_state
{
- void *tty;
- struct vm_device *frontend_dev;
+ void * tty;
+ struct vm_device * frontend_dev;
};
static int screen_update(uint_t x, uint_t y, uint_t length, void *private_data);
static int cursor_update(uint_t x, uint_t y, void *private_data)
{
- struct vm_device *dev = (struct vm_device *) private_data;
- struct cons_state *state = (struct cons_state *) dev->private_data;
- uint_t offset = (x * BYTES_PER_COL) + (y * BYTES_PER_ROW);
- uint_t last_x, last_y;
-
- /* unfortunately Palacios sometimes misses some writes,
- * but if they are accompanied by a cursor move we may be able to
- * detect this
- */
- if (offset < last_offset) last_offset = 0;
- if (offset > last_offset) {
- last_x = (last_offset % BYTES_PER_ROW) / BYTES_PER_COL;
- last_y = last_offset / BYTES_PER_ROW;
- screen_update(last_x, last_y, offset - last_offset, private_data);
- }
+ struct vm_device *dev = (struct vm_device *) private_data;
+ struct cons_state *state = (struct cons_state *) dev->private_data;
+ uint_t offset = (x * BYTES_PER_COL) + (y * BYTES_PER_ROW);
+ uint_t last_x, last_y;
+
+ /* unfortunately Palacios sometimes misses some writes,
+ * but if they are accompanied by a cursor move we may be able to
+ * detect this
+ */
+ if (offset < last_offset) last_offset = 0;
+
+ if (offset > last_offset) {
+ last_x = (last_offset % BYTES_PER_ROW) / BYTES_PER_COL;
+ last_y = last_offset / BYTES_PER_ROW;
+ screen_update(last_x, last_y, offset - last_offset, private_data);
+ }
+
+ /* adjust cursor */
+ if (V3_TtyCursorSet(state->tty, x, y) < 0) {
+ PrintError("V3_TtyCursorSet(0x%p, %d, %d) failed\n", state->tty, x, y);
+ return -1;
+ }
+
+ /* done with console update */
+ if (V3_TtyUpdate(state->tty) < 0) {
+ PrintError("V3_TtyUpdate(0x%p) failed\n", state->tty);
+ return -1;
+ }
+
+ return 0;
+}
- /* adjust cursor */
- if (V3_TtyCursorSet(state->tty, x, y) < 0) {
- PrintError("V3_TtyCursorSet(0x%p, %d, %d) failed\n", state->tty, x, y);
- return -1;
+static int screen_update(uint_t x, uint_t y, uint_t length, void * private_data) {
+ struct vm_device *dev = (struct vm_device *)private_data;
+ struct cons_state *state = (struct cons_state *)dev->private_data;
+ uint_t offset = (x * BYTES_PER_COL) + (y * BYTES_PER_ROW);
+ uint8_t fb_buf[length];
+ int i;
+ uint_t cur_x = x;
+ uint_t cur_y = y;
+
+ /* grab frame buffer */
+ memset(fb_buf, 0, length);
+ v3_cons_get_fb(state->frontend_dev, fb_buf, offset, length);
+
+ /* update the screen */
+ for (i = 0; i < length; i += 2) {
+ uint_t col_index = i;
+ uint8_t col[2];
+
+ col[0] = fb_buf[col_index]; // Character
+ col[1] = fb_buf[col_index + 1]; // Attribute
+
+ /* update current character */
+ if (V3_TtyCharacterSet(state->tty, cur_x, cur_y, col[0], col[1]) < 0) {
+ PrintError("V3_TtyCursorSet(0x%p, %d, %d, %d, %d) failed\n",
+ state->tty, cur_x, cur_y, col[1], col[0]);
+ return -1;
}
+
+ // CAUTION: the order of these statements is critical
+ // cur_y depends on the previous value of cur_x
+ cur_y = cur_y + ((cur_x + 1) / NUM_COLS);
+ cur_x = (cur_x + 1) % NUM_COLS;
+ }
+
+ /* done with console update */
+ if (V3_TtyUpdate(state->tty) < 0) {
+ PrintError("V3_TtyUpdate(0x%p) failed\n", state->tty);
+ return -1;
+ }
+
+ /* store offset to catch missing notifications */
+ last_offset = offset + length;
+
+ return 0;
+}
- /* done with console update */
- if (V3_TtyUpdate(state->tty) < 0) {
- PrintError("V3_TtyUpdate(0x%p) failed\n", state->tty);
- return -1;
- }
+static int scroll(int rows, void * private_data) {
+ struct vm_device *dev = (struct vm_device *)private_data;
+ struct cons_state *state = (struct cons_state *)dev->private_data;
- return 0;
-}
+ if (rows < 0) {
+ /* simply update the screen */
+ return screen_update(0, 0, SCREEN_SIZE, private_data);
+ }
-static int screen_update(uint_t x, uint_t y, uint_t length, void *private_data)
-{
- struct vm_device *dev = (struct vm_device *)private_data;
- struct cons_state *state = (struct cons_state *)dev->private_data;
- uint_t offset = (x * BYTES_PER_COL) + (y * BYTES_PER_ROW);
- uint8_t fb_buf[length];
- int i;
- uint_t cur_x = x;
- uint_t cur_y = y;
-
- /* grab frame buffer */
- memset(fb_buf, 0, length);
- v3_cons_get_fb(state->frontend_dev, fb_buf, offset, length);
-
- /* update the screen */
- for (i = 0; i < length; i += 2)
- {
- uint_t col_index = i;
- uint8_t col[2];
-
- col[0] = fb_buf[col_index]; // Character
- col[1] = fb_buf[col_index + 1]; // Attribute
-
- /* update current character */
- if (V3_TtyCharacterSet(state->tty, cur_x, cur_y, col[0], col[1]) < 0) {
- PrintError("V3_TtyCursorSet(0x%p, %d, %d, %d, %d) failed\n",
- state->tty, cur_x, cur_y, col[1], col[0]);
- return -1;
- }
-
- // CAUTION: the order of these statements is critical
- // cur_y depends on the previous value of cur_x
- cur_y = cur_y + ((cur_x + 1) / NUM_COLS);
- cur_x = (cur_x + 1) % NUM_COLS;
+ if (rows > 0) {
+ /* scroll requested number of lines*/
+ if (V3_TtyScroll(state->tty, rows) < 0) {
+ PrintError("V3_TtyScroll(0x%p, %u) failed\n", state->tty, rows);
+ return -1;
}
/* done with console update */
if (V3_TtyUpdate(state->tty) < 0) {
- PrintError("V3_TtyUpdate(0x%p) failed\n", state->tty);
- return -1;
+ PrintError("V3_TtyUpdate(0x%p) failed\n", state->tty);
+ return -1;
}
-
- /* store offset to catch missing notifications */
- last_offset = offset + length;
-
- return 0;
-}
-
-static int scroll(int rows, void *private_data)
-{
- struct vm_device *dev = (struct vm_device *)private_data;
- struct cons_state *state = (struct cons_state *)dev->private_data;
-
- if (rows < 0) {
- /* simply update the screen */
- return screen_update(0, 0, SCREEN_SIZE, private_data);
- }
-
- if (rows > 0) {
- /* scroll requested number of lines*/
- if (V3_TtyScroll(state->tty, rows) < 0) {
- PrintError("V3_TtyScroll(0x%p, %u) failed\n", state->tty, rows);
- return -1;
- }
-
- /* done with console update */
- if (V3_TtyUpdate(state->tty) < 0) {
- PrintError("V3_TtyUpdate(0x%p) failed\n", state->tty);
- return -1;
- }
- last_offset = BYTES_PER_ROW * (NUM_ROWS - 1);
- }
+ last_offset = BYTES_PER_ROW * (NUM_ROWS - 1);
+ }
- return 0;
+ return 0;
}
static struct v3_console_ops cons_ops = {
static int cons_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg)
{
- struct cons_state * state = NULL;
- v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
- const char * frontend_tag = v3_cfg_val(frontend_cfg, "tag");
- struct vm_device * frontend = v3_find_dev(vm, frontend_tag);
- char * dev_id = v3_cfg_val(cfg, "ID");
- char * ttypath = v3_cfg_val(cfg, "tty");
-
- /* read configuration */
- V3_ASSERT(frontend_cfg);
- V3_ASSERT(frontend_tag);
- V3_ASSERT(frontend);
-
-
- /* allocate state */
- state = (struct cons_state *)V3_Malloc(sizeof(struct cons_state));
- V3_ASSERT(state);
- state->frontend_dev = frontend;
- V3_ASSERT(ttypath);
-
- /* open tty for screen display */
- state->tty = V3_TtyOpen(ttypath, TTY_OPEN_MODE_READ | TTY_OPEN_MODE_WRITE);
- if (!state->tty) {
- PrintError("Could not open tty %s\n", ttypath);
- V3_Free(state);
- return -1;
- }
-
- /* allocate device */
- struct vm_device *dev = v3_allocate_device(dev_id, &dev_ops, state);
- V3_ASSERT(dev);
-
- /* attach device to virtual machine */
- if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", dev_id);
- V3_Free(state);
- return -1;
- }
-
- /* attach to front-end display adapter */
- v3_console_register_cga(frontend, &cons_ops, dev);
-
- return 0;
+ struct cons_state * state = NULL;
+ v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
+ const char * frontend_tag = v3_cfg_val(frontend_cfg, "tag");
+ struct vm_device * frontend = v3_find_dev(vm, frontend_tag);
+ char * dev_id = v3_cfg_val(cfg, "ID");
+ char * ttypath = v3_cfg_val(cfg, "tty");
+
+ /* read configuration */
+ V3_ASSERT(frontend_cfg);
+ V3_ASSERT(frontend_tag);
+ V3_ASSERT(frontend);
+
+
+ /* allocate state */
+ state = (struct cons_state *)V3_Malloc(sizeof(struct cons_state));
+ V3_ASSERT(state);
+ state->frontend_dev = frontend;
+ V3_ASSERT(ttypath);
+
+ /* open tty for screen display */
+ state->tty = V3_TtyOpen(vm, ttypath, TTY_OPEN_MODE_READ | TTY_OPEN_MODE_WRITE);
+
+ if (!state->tty) {
+ PrintError("Could not open tty %s\n", ttypath);
+ V3_Free(state);
+ return -1;
+ }
+
+ /* allocate device */
+ struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, state);
+ V3_ASSERT(dev);
+
+ /* attach device to virtual machine */
+ if (v3_attach_device(vm, dev) == -1) {
+ PrintError("Could not attach device %s\n", dev_id);
+ V3_Free(state);
+ return -1;
+ }
+
+ /* attach to front-end display adapter */
+ v3_console_register_cga(frontend, &cons_ops, dev);
+
+ return 0;
}
device_register("CURSES_CONSOLE", cons_init)
