/* $OpenBSD: pcdisplay_subr.c,v 1.4 2001/04/14 04:44:01 aaron Exp $ */ /* $NetBSD: pcdisplay_subr.c,v 1.16 2000/06/08 07:01:19 cgd Exp $ */ /* * Copyright (c) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include #include #include #include #include #include #include #include #include void pcdisplay_cursor_init(scr, existing) struct pcdisplayscreen *scr; int existing; { #ifdef PCDISPLAY_SOFTCURSOR bus_space_tag_t memt; bus_space_handle_t memh; int off; pcdisplay_6845_write(scr->hdl, curstart, 0x10); pcdisplay_6845_write(scr->hdl, curend, 0x10); if (existing) { /* * This is the first screen. At this point, scr->active is * false and scr->mem is NULL (no backing store), so we * can't use pcdisplay_cursor() to do this. */ memt = scr->hdl->ph_memt; memh = scr->hdl->ph_memh; off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol) * 2 + scr->dispoffset; scr->cursortmp = bus_space_read_2(memt, memh, off); bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); } else scr->cursortmp = 0; #endif scr->cursoron = 1; } void pcdisplay_cursor(id, on, row, col) void *id; int on, row, col; { #ifdef PCDISPLAY_SOFTCURSOR struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; int off; /* Remove old cursor image */ if (scr->cursoron) { off = scr->vc_crow * scr->type->ncols + scr->vc_ccol; if (scr->active) bus_space_write_2(memt, memh, scr->dispoffset + off * 2, scr->cursortmp); else scr->mem[off] = scr->cursortmp; } scr->vc_crow = row; scr->vc_ccol = col; if ((scr->cursoron = on) == 0) return; off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol); if (scr->active) { off = off * 2 + scr->dispoffset; scr->cursortmp = bus_space_read_2(memt, memh, off); bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); } else { scr->cursortmp = scr->mem[off]; scr->mem[off] = scr->cursortmp ^ 0x7700; } #else /* PCDISPLAY_SOFTCURSOR */ struct pcdisplayscreen *scr = id; int pos; scr->vc_crow = row; scr->vc_ccol = col; scr->cursoron = on; if (scr->active) { if (!on) pos = 0x1010; else pos = scr->dispoffset / 2 + row * scr->type->ncols + col; pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8); pcdisplay_6845_write(scr->hdl, cursorl, pos); } #endif /* PCDISPLAY_SOFTCURSOR */ } #if 0 unsigned int pcdisplay_mapchar_simple(id, uni) void *id; int uni; { if (uni < 128) return (uni); return (1); /* XXX ??? smiley */ } #endif void pcdisplay_putchar(id, row, col, c, attr) void *id; int row, col; u_int c; long attr; { struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; int off; off = row * scr->type->ncols + col; if (scr->active) bus_space_write_2(memt, memh, scr->dispoffset + off * 2, c | (attr << 8)); else scr->mem[off] = c | (attr << 8); } u_int16_t pcdisplay_getchar(id, row, col) void *id; int row, col; { struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; int off; off = row * scr->type->ncols + col; if (scr->active) return (bus_space_read_2(memt, memh, scr->dispoffset + off * 2)); else return (scr->mem[off]); } void pcdisplay_copycols(id, row, srccol, dstcol, ncols) void *id; int row, srccol, dstcol, ncols; { struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; bus_size_t srcoff, dstoff; srcoff = dstoff = row * scr->type->ncols; srcoff += srccol; dstoff += dstcol; if (scr->active) bus_space_copy_2(memt, memh, scr->dispoffset + srcoff * 2, memh, scr->dispoffset + dstoff * 2, ncols); else bcopy(&scr->mem[srcoff], &scr->mem[dstoff], ncols * 2); } void pcdisplay_erasecols(id, row, startcol, ncols, fillattr) void *id; int row, startcol, ncols; long fillattr; { struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; bus_size_t off; u_int16_t val; int i; off = row * scr->type->ncols + startcol; val = (fillattr << 8) | ' '; if (scr->active) bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, val, ncols); else for (i = 0; i < ncols; i++) scr->mem[off + i] = val; } void pcdisplay_copyrows(id, srcrow, dstrow, nrows) void *id; int srcrow, dstrow, nrows; { struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; int ncols = scr->type->ncols; bus_size_t srcoff, dstoff; srcoff = srcrow * ncols + 0; dstoff = dstrow * ncols + 0; if (scr->active) bus_space_copy_2(memt, memh, scr->dispoffset + srcoff * 2, memh, scr->dispoffset + dstoff * 2, nrows * ncols); else bcopy(&scr->mem[srcoff], &scr->mem[dstoff], nrows * ncols * 2); } void pcdisplay_eraserows(id, startrow, nrows, fillattr) void *id; int startrow, nrows; long fillattr; { struct pcdisplayscreen *scr = id; bus_space_tag_t memt = scr->hdl->ph_memt; bus_space_handle_t memh = scr->hdl->ph_memh; bus_size_t off, count; u_int16_t val; int i; off = startrow * scr->type->ncols; count = nrows * scr->type->ncols; val = (fillattr << 8) | ' '; if (scr->active) bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, val, count); else for (i = 0; i < count; i++) scr->mem[off + i] = val; }