add scrollback support
This commit is contained in:
macallan
parent
bf32d3c292
commit
75a9d6c832
@ -1,4 +1,4 @@
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# $NetBSD: files.wscons,v 1.39 2006/10/09 10:33:42 peter Exp $
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# $NetBSD: files.wscons,v 1.40 2007/08/06 03:11:32 macallan Exp $
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#
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# "Workstation Console" glue; attaches frame buffer to emulator & keyboard,
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@ -33,6 +33,7 @@ defflag opt_wsdisplay_compat.h WSDISPLAY_COMPAT_USL
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WSKBD_EVENT_AUTOREPEAT
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defparam opt_wsdisplay_compat.h WSCOMPAT_USL_SYNCTIMEOUT
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WSDISPLAY_DEFAULTSCREENS
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defparam opt_wsdisplay_compat.h WSDISPLAY_SCROLLBACK_LINES=100
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# this loses, but there's no way to define attributes which have attributes
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device wsdisplay #tty?
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@ -73,3 +74,4 @@ defflag opt_tpcalib.h TPCALIBDEBUG
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# generic virtual console support on bitmapped framebuffers
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file dev/wscons/wsdisplay_vcons.c vcons
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defflag opt_vcons.h VCONS_SWITCH_ASYNC
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@ -1,4 +1,4 @@
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/* $NetBSD: wsdisplay_vcons.c,v 1.13 2007/07/28 22:35:56 rumble Exp $ */
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/* $NetBSD: wsdisplay_vcons.c,v 1.14 2007/08/06 03:11:32 macallan Exp $ */
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/*-
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* Copyright (c) 2005, 2006 Michael Lorenz
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@ -34,7 +34,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wsdisplay_vcons.c,v 1.13 2007/07/28 22:35:56 rumble Exp $");
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__KERNEL_RCSID(0, "$NetBSD: wsdisplay_vcons.c,v 1.14 2007/08/06 03:11:32 macallan Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -57,6 +57,10 @@ __KERNEL_RCSID(0, "$NetBSD: wsdisplay_vcons.c,v 1.13 2007/07/28 22:35:56 rumble
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#include <dev/wscons/wsdisplay_vconsvar.h>
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#include "opt_wsemul.h"
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#include "opt_wsdisplay_compat.h"
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#include "opt_vcons.h"
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static void vcons_dummy_init_screen(void *, struct vcons_screen *, int,
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long *);
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@ -67,6 +71,11 @@ static void vcons_free_screen(void *, void *);
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static int vcons_show_screen(void *, void *, int, void (*)(void *, int, int),
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void *);
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#ifdef WSDISPLAY_SCROLLSUPPORT
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static void vcons_scroll(void *, void *, int);
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static void vcons_do_scroll(struct vcons_screen *);
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#endif
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static void vcons_do_switch(struct vcons_data *);
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/* methods that work only on text buffers */
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@ -87,13 +96,16 @@ static void vcons_eraserows(void *, int, int, long);
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static void vcons_putchar(void *, int, int, u_int, long);
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static void vcons_cursor(void *, int, int, int);
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/* support for readin/writing text buffers. For wsmoused */
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/* support for reading/writing text buffers. For wsmoused */
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static int vcons_putwschar(struct vcons_screen *, struct wsdisplay_char *);
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static int vcons_getwschar(struct vcons_screen *, struct wsdisplay_char *);
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static void vcons_lock(struct vcons_screen *);
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static void vcons_unlock(struct vcons_screen *);
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#ifdef VCONS_SWITCH_ASYNC
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static void vcons_kthread(void *);
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#endif
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int
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vcons_init(struct vcons_data *vd, void *cookie, struct wsscreen_descr *def,
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@ -117,6 +129,9 @@ vcons_init(struct vcons_data *vd, void *cookie, struct wsscreen_descr *def,
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ao->alloc_screen = vcons_alloc_screen;
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ao->free_screen = vcons_free_screen;
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ao->show_screen = vcons_show_screen;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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ao->scroll = vcons_scroll;
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#endif
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LIST_INIT(&vd->screens);
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vd->active = NULL;
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@ -131,6 +146,10 @@ vcons_init(struct vcons_data *vd, void *cookie, struct wsscreen_descr *def,
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*/
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#ifdef DIAGNOSTIC
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vd->switch_poll_count = 0;
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#endif
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#ifdef VCONS_SWITCH_ASYNC
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kthread_create(PRI_NONE, 0, NULL, vcons_kthread, vd,
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&vd->redraw_thread, "vcons_draw");
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#endif
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return 0;
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}
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@ -161,6 +180,9 @@ vcons_unlock(struct vcons_screen *scr)
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#ifdef VCONS_PARANOIA
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splx(s);
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#endif
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#ifdef VCONS_SWITCH_ASYNC
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wakeup(&scr->scr_vd->done_drawing);
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#endif
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}
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static void
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@ -187,7 +209,7 @@ vcons_init_screen(struct vcons_data *vd, struct vcons_screen *scr,
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scr->scr_cookie = vd->cookie;
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scr->scr_vd = scr->scr_origvd = vd;
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SCREEN_IDLE(scr);
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scr->scr_busy = 0;
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/*
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* call the driver-supplied init_screen function which is expected
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@ -218,7 +240,16 @@ vcons_init_screen(struct vcons_data *vd, struct vcons_screen *scr,
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* we allocate both chars and attributes in one chunk, attributes first
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* because they have the (potentially) bigger alignment
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*/
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#ifdef WSDISPLAY_SCROLLSUPPORT
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cnt = (ri->ri_rows + WSDISPLAY_SCROLLBACK_LINES) * ri->ri_cols;
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scr->scr_lines_in_buffer = WSDISPLAY_SCROLLBACK_LINES;
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scr->scr_current_line = 0;
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scr->scr_line_wanted = 0;
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scr->scr_offset_to_zero = ri->ri_cols * WSDISPLAY_SCROLLBACK_LINES;
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scr->scr_current_offset = scr->scr_offset_to_zero;
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#else
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cnt = ri->ri_rows * ri->ri_cols;
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#endif
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scr->scr_attrs = (long *)malloc(cnt * (sizeof(long) +
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sizeof(uint16_t)), M_DEVBUF, M_WAITOK);
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if (scr->scr_attrs == NULL)
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@ -301,7 +332,7 @@ vcons_do_switch(struct vcons_data *vd)
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#ifdef DIAGNOSTIC
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if (SCREEN_IS_VISIBLE(scr))
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panic("vcons_switch_screen: already active");
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printf("vcons_switch_screen: already active");
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#endif
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#ifdef notyet
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@ -346,7 +377,11 @@ vcons_redraw_screen(struct vcons_screen *scr)
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}
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/* redraw the screen */
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#ifdef WSDISPLAY_SCROLLSUPPORT
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offset = scr->scr_current_offset;
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#else
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offset = 0;
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#endif
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for (i = 0; i < ri->ri_rows; i++) {
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for (j = 0; j < ri->ri_cols; j++) {
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/*
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@ -473,6 +508,10 @@ vcons_show_screen(void *v, void *cookie, int waitok,
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vd->wanted = scr;
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vd->switch_cb = cb;
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vd->switch_cb_arg = cb_arg;
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#ifdef VCONS_SWITCH_ASYNC
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wakeup(&vd->start_drawing);
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return EAGAIN;
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#else
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if (cb) {
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callout_reset(&vd->switch_callout, 0,
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(void(*)(void *))vcons_do_switch, vd);
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@ -481,6 +520,7 @@ vcons_show_screen(void *v, void *cookie, int waitok,
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vcons_do_switch(vd);
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return 0;
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#endif
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}
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/* wrappers for rasops_info methods */
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@ -493,10 +533,20 @@ vcons_copycols_buffer(void *cookie, int row, int srccol, int dstcol, int ncols)
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int from = srccol + row * ri->ri_cols;
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int to = dstcol + row * ri->ri_cols;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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int offset;
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offset = scr->scr_offset_to_zero;
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memmove(&scr->scr_attrs[offset + to], &scr->scr_attrs[offset + from],
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ncols * sizeof(long));
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memmove(&scr->scr_chars[offset + to], &scr->scr_chars[offset + from],
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ncols * sizeof(uint16_t));
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#else
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memmove(&scr->scr_attrs[to], &scr->scr_attrs[from],
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ncols * sizeof(long));
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memmove(&scr->scr_chars[to], &scr->scr_chars[from],
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ncols * sizeof(uint16_t));
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#endif
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}
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static void
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@ -522,10 +572,20 @@ vcons_erasecols_buffer(void *cookie, int row, int startcol, int ncols, long fill
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int start = startcol + row * ri->ri_cols;
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int end = start + ncols, i;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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int offset;
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offset = scr->scr_offset_to_zero;
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for (i = start; i < end; i++) {
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scr->scr_attrs[offset + i] = fillattr;
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scr->scr_chars[offset + i] = 0x20;
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}
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#else
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for (i = start; i < end; i++) {
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scr->scr_attrs[i] = fillattr;
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scr->scr_chars[i] = 0x20;
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}
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#endif
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}
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static void
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@ -551,10 +611,29 @@ vcons_copyrows_buffer(void *cookie, int srcrow, int dstrow, int nrows)
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struct vcons_screen *scr = ri->ri_hw;
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int from, to, len;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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int offset;
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offset = scr->scr_offset_to_zero;
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/* do we need to scroll the back buffer? */
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if (dstrow == 0) {
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from = ri->ri_cols * srcrow;
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to = ri->ri_cols * dstrow;
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memmove(&scr->scr_attrs[to], &scr->scr_attrs[from],
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scr->scr_offset_to_zero * sizeof(long));
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memmove(&scr->scr_chars[to], &scr->scr_chars[from],
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scr->scr_offset_to_zero * sizeof(uint16_t));
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}
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from = ri->ri_cols * srcrow + offset;
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to = ri->ri_cols * dstrow + offset;
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len = ri->ri_cols * nrows;
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#else
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from = ri->ri_cols * srcrow;
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to = ri->ri_cols * dstrow;
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len = ri->ri_cols * nrows;
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#endif
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memmove(&scr->scr_attrs[to], &scr->scr_attrs[from],
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len * sizeof(long));
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memmove(&scr->scr_chars[to], &scr->scr_chars[from],
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@ -583,8 +662,16 @@ vcons_eraserows_buffer(void *cookie, int row, int nrows, long fillattr)
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struct vcons_screen *scr = ri->ri_hw;
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int start, end, i;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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int offset;
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offset = scr->scr_offset_to_zero;
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start = ri->ri_cols * row + offset;
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end = ri->ri_cols * (row + nrows) + offset;
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#else
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start = ri->ri_cols * row;
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end = ri->ri_cols * (row + nrows);
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#endif
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for (i = start; i < end; i++) {
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scr->scr_attrs[i] = fillattr;
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@ -614,12 +701,24 @@ vcons_putchar_buffer(void *cookie, int row, int col, u_int c, long attr)
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struct vcons_screen *scr = ri->ri_hw;
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int pos;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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int offset;
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offset = scr->scr_offset_to_zero;
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if ((row >= 0) && (row < ri->ri_rows) && (col >= 0) &&
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(col < ri->ri_cols)) {
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pos = col + row * ri->ri_cols;
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scr->scr_attrs[pos + offset] = attr;
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scr->scr_chars[pos + offset] = c;
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}
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#else
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if ((row >= 0) && (row < ri->ri_rows) && (col >= 0) &&
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(col < ri->ri_cols)) {
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pos = col + row * ri->ri_cols;
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scr->scr_attrs[pos] = attr;
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scr->scr_chars[pos] = c;
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}
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#endif
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}
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static void
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@ -669,10 +768,19 @@ vcons_putwschar(struct vcons_screen *scr, struct wsdisplay_char *wsc)
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(unsigned int)wsc->row > ri->ri_rows))
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return (EINVAL);
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ri->ri_ops.allocattr(ri, wsc->foreground, wsc->background,
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wsc->flags, &attr);
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vcons_putchar(ri, wsc->row, wsc->col, wsc->letter, attr);
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return 0;
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if ((wsc->row >= 0) && (wsc->row < ri->ri_rows) && (wsc->col >= 0) &&
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(wsc->col < ri->ri_cols)) {
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ri->ri_ops.allocattr(ri, wsc->foreground, wsc->background,
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wsc->flags, &attr);
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vcons_putchar(ri, wsc->row, wsc->col, wsc->letter, attr);
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#ifdef VCONS_DEBUG
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printf("vcons_putwschar(%d, %d, %x, %lx\n", wsc->row, wsc->col,
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wsc->letter, attr);
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#endif
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return 0;
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} else
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return EINVAL;
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}
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static int
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@ -685,17 +793,153 @@ vcons_getwschar(struct vcons_screen *scr, struct wsdisplay_char *wsc)
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KASSERT(scr != NULL && wsc != NULL);
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ri = &scr->scr_ri;
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offset = ri->ri_cols * wsc->row + wsc->col;
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wsc->letter = scr->scr_chars[offset];
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attr = scr->scr_attrs[offset];
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/*
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* this is ugly. We need to break up an attribute into colours and
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* flags but there's no rasops method to do that so we must rely on
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* the 'canonical' encoding.
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*/
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wsc->foreground = (attr & 0xff000000) >> 24;
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wsc->background = (attr & 0x00ff0000) >> 16;
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wsc->flags = (attr & 0x0000ff00) >> 8;
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return 0;
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if ((wsc->row >= 0) && (wsc->row < ri->ri_rows) && (wsc->col >= 0) &&
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(wsc->col < ri->ri_cols)) {
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offset = ri->ri_cols * wsc->row + wsc->col;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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offset += scr->scr_offset_to_zero;
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#endif
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wsc->letter = scr->scr_chars[offset];
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attr = scr->scr_attrs[offset];
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/*
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* this is ugly. We need to break up an attribute into colours and
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* flags but there's no rasops method to do that so we must rely on
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* the 'canonical' encoding.
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*/
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#ifdef VCONS_DEBUG
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printf("vcons_getwschar: %d, %d, %x, %lx\n", wsc->row,
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wsc->col, wsc->letter, attr);
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#endif
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wsc->foreground = (attr >> 24) & 0xff;
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wsc->background = (attr >> 16) & 0xff;
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wsc->flags = attr & 0xff;
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return 0;
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} else
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return EINVAL;
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}
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#ifdef WSDISPLAY_SCROLLSUPPORT
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static void
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vcons_scroll(void *cookie, void *vs, int where)
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{
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struct vcons_screen *scr = vs;
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if (where == 0) {
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scr->scr_line_wanted = 0;
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} else {
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scr->scr_line_wanted = scr->scr_line_wanted - where;
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if (scr->scr_line_wanted < 0)
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scr->scr_line_wanted = 0;
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if (scr->scr_line_wanted > scr->scr_lines_in_buffer)
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scr->scr_line_wanted = scr->scr_lines_in_buffer;
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}
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if (scr->scr_line_wanted != scr->scr_current_line) {
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vcons_do_scroll(scr);
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}
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}
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static void
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vcons_do_scroll(struct vcons_screen *scr)
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{
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int dist, from, to, num;
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int r_offset, r_start;
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int i, j;
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if (scr->scr_line_wanted == scr->scr_current_line)
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return;
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dist = scr->scr_line_wanted - scr->scr_current_line;
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scr->scr_current_line = scr->scr_line_wanted;
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scr->scr_current_offset = scr->scr_ri.ri_cols *
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(scr->scr_lines_in_buffer - scr->scr_current_line);
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if (abs(dist) >= scr->scr_ri.ri_rows) {
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vcons_redraw_screen(scr);
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return;
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}
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/* scroll and redraw only what we really have to */
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if (dist > 0) {
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/* we scroll down */
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from = 0;
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to = dist;
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num = scr->scr_ri.ri_rows - dist;
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/* now the redraw parameters */
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r_offset = scr->scr_current_offset;
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r_start = 0;
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} else {
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/* scrolling up */
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to = 0;
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from = -dist;
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num = scr->scr_ri.ri_rows + dist;
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r_offset = scr->scr_current_offset + num * scr->scr_ri.ri_cols;
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r_start = num;
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}
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scr->scr_vd->copyrows(scr, from, to, num);
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for (i = 0; i < abs(dist); i++) {
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for (j = 0; j < scr->scr_ri.ri_cols; j++) {
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scr->scr_vd->putchar(scr, i + r_start, j,
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scr->scr_chars[r_offset],
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scr->scr_attrs[r_offset]);
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r_offset++;
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}
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}
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if (scr->scr_line_wanted == 0) {
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/* this was a reset - need to draw the cursor */
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scr->scr_ri.ri_flg &= ~RI_CURSOR;
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scr->scr_vd->cursor(scr, 1, scr->scr_ri.ri_crow,
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scr->scr_ri.ri_ccol);
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}
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}
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#endif /* WSDISPLAY_SCROLLSUPPORT */
|
||||
|
||||
/* async drawing using a kernel thread */
|
||||
|
||||
#ifdef VCONS_SWITCH_ASYNC
|
||||
static void
|
||||
vcons_kthread(void *cookie)
|
||||
{
|
||||
struct vcons_data *vd = cookie;
|
||||
struct vcons_screen *scr;
|
||||
int sec = hz;
|
||||
|
||||
while (1) {
|
||||
|
||||
tsleep(&vd->start_drawing, 0, "vc_idle", sec);
|
||||
if ((vd->wanted != vd->active) && (vd->wanted != NULL)) {
|
||||
/*
|
||||
* we need to switch screens
|
||||
* so first we mark the active screen as invisible
|
||||
* and wait until it's idle
|
||||
*/
|
||||
scr = vd->wanted;
|
||||
SCREEN_INVISIBLE(vd->active);
|
||||
while (SCREEN_IS_BUSY(vd->active)) {
|
||||
|
||||
tsleep(&vd->done_drawing, 0, "vc_wait", sec);
|
||||
}
|
||||
/*
|
||||
* now we mark the wanted screen busy so nobody
|
||||
* messes around while we redraw it
|
||||
*/
|
||||
vd->active = scr;
|
||||
vd->wanted = NULL;
|
||||
SCREEN_VISIBLE(scr);
|
||||
|
||||
if (vd->show_screen_cb != NULL)
|
||||
vd->show_screen_cb(scr);
|
||||
|
||||
if ((scr->scr_flags & VCONS_NO_REDRAW) == 0)
|
||||
vcons_redraw_screen(scr);
|
||||
|
||||
if (vd->switch_cb)
|
||||
vd->switch_cb(vd->switch_cb_arg, 0, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif /* VCONS_SWITCH_ASYNC */
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: wsdisplay_vconsvar.h,v 1.7 2007/07/09 21:01:26 ad Exp $ */
|
||||
/* $NetBSD: wsdisplay_vconsvar.h,v 1.8 2007/08/06 03:11:32 macallan Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2005, 2006 Michael Lorenz
|
||||
@ -36,6 +36,9 @@
|
||||
#ifndef _WSDISPLAY_VCONS_H_
|
||||
#define _WSDISPLAY_VCONS_H_
|
||||
|
||||
#include "opt_wsdisplay_compat.h"
|
||||
#include "opt_vcons.h"
|
||||
|
||||
struct vcons_data;
|
||||
|
||||
struct vcons_screen {
|
||||
@ -62,6 +65,13 @@ struct vcons_screen {
|
||||
#define VCONS_IS_VISIBLE 1 /* this screen is currently visible */
|
||||
/* non zero when some rasops operation is in progress */
|
||||
int scr_busy;
|
||||
#ifdef WSDISPLAY_SCROLLSUPPORT
|
||||
int scr_lines_in_buffer;
|
||||
int scr_current_line;
|
||||
int scr_line_wanted;
|
||||
int scr_offset_to_zero;
|
||||
int scr_current_offset;
|
||||
#endif
|
||||
};
|
||||
|
||||
#define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0)
|
||||
@ -73,6 +83,7 @@ struct vcons_screen {
|
||||
#define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE)
|
||||
#define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW)
|
||||
#define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW)
|
||||
|
||||
struct vcons_data {
|
||||
/* usually the drivers softc */
|
||||
void *cookie;
|
||||
@ -95,12 +106,16 @@ struct vcons_data {
|
||||
void (*eraserows)(void *, int, int, long);
|
||||
void (*putchar)(void *, int, int, u_int, long);
|
||||
void (*cursor)(void *, int, int, int);
|
||||
/* called before cvons_redraw_screen */
|
||||
/* called before vcons_redraw_screen */
|
||||
void (*show_screen_cb)(struct vcons_screen *);
|
||||
/* virtual screen management stuff */
|
||||
void (*switch_cb)(void *, int, int);
|
||||
void *switch_cb_arg;
|
||||
callout_t switch_callout;
|
||||
#ifdef VCONS_SWITCH_ASYNC
|
||||
lwp_t *redraw_thread;
|
||||
int start_drawing, done_drawing; /* for the drawing thread */
|
||||
#endif
|
||||
struct callout switch_callout;
|
||||
uint32_t switch_pending;
|
||||
LIST_HEAD(, vcons_screen) screens;
|
||||
struct vcons_screen *active, *wanted;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user