tty/vt/vc_screen.c

88 	struct vc_data *vc = param->vc;
109 	if (currcons != vc->vc_num)
202  * vcs_size - return size for a VC in @vc
203  * @vc: which VC
209 static int vcs_size(const struct vc_data *vc, bool attr, bool unicode)
215 	size = vc->vc_rows * vc->vc_cols;
231 	struct vc_data *vc;
235 	vc = vcs_vc(inode, NULL);
236 	if (!vc) {
241 	size = vcs_size(vc, use_attributes(inode), use_unicode(inode));
248 static int vcs_read_buf_uni(struct vc_data *vc, char *con_buf,
251 	unsigned int nr, row, col, maxcol = vc->vc_cols;
254 	ret = vc_uniscr_check(vc);
265 		vc_uniscr_copy_line(vc, con_buf, viewed, row, col, nr);
276 static void vcs_read_buf_noattr(const struct vc_data *vc, char *con_buf,
280 	unsigned int col, maxcol = vc->vc_cols;
282 	org = screen_pos(vc, pos, viewed);
287 		*con_buf++ = (vcs_scr_readw(vc, org++) & 0xff);
289 			org = screen_pos(vc, pos, viewed);
296 static unsigned int vcs_read_buf(const struct vc_data *vc, char *con_buf,
301 	unsigned int col, maxcol = vc->vc_cols;
306 		con_buf[0] = min(vc->vc_rows, 0xFFu);
307 		con_buf[1] = min(vc->vc_cols, 0xFFu);
308 		getconsxy(vc, con_buf + 2);
341 	org = screen_pos(vc, pos, viewed);
352 		*con_buf16++ = vcs_scr_readw(vc, org++);
355 			org = screen_pos(vc, pos, viewed);
368 	struct vc_data *vc;
406 		vc = vcs_vc(inode, &viewed);
407 		if (!vc) {
416 		size = vcs_size(vc, attr, uni_mode);
436 			ret = vcs_read_buf_uni(vc, con_buf, pos, this_round,
441 			vcs_read_buf_noattr(vc, con_buf, pos, this_round,
444 			this_round = vcs_read_buf(vc, con_buf, pos, this_round,
478 static u16 *vcs_write_buf_noattr(struct vc_data *vc, const char *con_buf,
482 	unsigned int col, maxcol = vc->vc_cols;
484 	*org0 = org = screen_pos(vc, pos, viewed);
492 		vcs_scr_writew(vc,
493 			       (vcs_scr_readw(vc, org) & 0xff00) | c, org);
496 			org = screen_pos(vc, pos, viewed);
518 static u16 *vcs_write_buf(struct vc_data *vc, const char *con_buf,
522 	unsigned int col, maxcol = vc->vc_cols;
529 		getconsxy(vc, header + 2);
535 			putconsxy(vc, header + 2);
544 	*org0 = org = screen_pos(vc, pos/2, viewed);
550 		vcs_scr_writew(vc, vc_compile_le16(c, vcs_scr_readw(vc, org)),
555 			org = screen_pos(vc, pos/2, viewed);
568 		vcs_scr_writew(vc, w, org++);
572 			org = screen_pos(vc, pos, viewed);
583 	vcs_scr_writew(vc, vc_compile_le16(vcs_scr_readw(vc, org) >> 8, c),
593 	struct vc_data *vc;
618 	vc = vcs_vc(inode, &viewed);
619 	if (!vc)
622 	size = vcs_size(vc, attr, false);
659 		/* The vc might have been freed or vcs_size might have changed
663 		vc = vcs_vc(inode, &viewed);
664 		if (!vc) {
670 		size = vcs_size(vc, attr, false);
687 			org = vcs_write_buf(vc, con_buf, pos, this_round,
690 			org = vcs_write_buf_noattr(vc, con_buf, pos, this_round,
698 			update_region(vc, (unsigned long)(org0), org - org0);
703 		vcs_scr_updated(vc);
790 	.name = "vc",