1 /* $NetBSD: gdium_genfb.c,v 1.7 2023/12/20 14:12:25 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
22 * School of Computer Science
23 * Carnegie Mellon University
24 * Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: gdium_genfb.c,v 1.7 2023/12/20 14:12:25 thorpej Exp $");
32
33 #include <sys/param.h>
34 #include <sys/buf.h>
35 #include <sys/bus.h>
36 #include <sys/conf.h>
37 #include <sys/device.h>
38 #include <sys/ioctl.h>
39 #include <sys/kernel.h>
40 #include <sys/systm.h>
41
42 #include <dev/wscons/wsconsio.h>
43 #include <dev/wscons/wsdisplayvar.h>
44 #include <dev/rasops/rasops.h>
45 #include <dev/wsfont/wsfont.h>
46 #include <dev/wscons/wsdisplay_vconsvar.h>
47
48 #include <mips/bonito/bonitoreg.h>
49 #include <evbmips/gdium/gdiumvar.h>
50 #include <dev/pci/pcireg.h>
51 #include <dev/pci/pcivar.h>
52
53 #include "wsdisplay.h"
54
55 /* we need a wsdisplay to do anything halfway useful */
56 #if NWSDISPLAY > 0
57
58 static struct vcons_screen gdium_console_screen;
59
60 static struct wsscreen_descr gdium_stdscreen = {
61 .name = "std",
62 };
63
64 int
gdium_cnattach(struct gdium_config * gc)65 gdium_cnattach(struct gdium_config *gc)
66 {
67 struct rasops_info * const ri = &gdium_console_screen.scr_ri;
68 long defattr;
69 pcireg_t reg;
70
71 wsfont_init();
72
73 /* set up rasops */
74 ri->ri_width = 1024;
75 ri->ri_height = 600;
76 ri->ri_depth = 16;
77 ri->ri_stride = 0x800;
78
79 /* read the mapping register for the frame buffer */
80 reg = pci_conf_read(&gc->gc_pc, pci_make_tag(&gc->gc_pc, 0, 14, 0),
81 PCI_MAPREG_START);
82
83 ri->ri_bits = (char *)MIPS_PHYS_TO_KSEG1(BONITO_PCILO_BASE + reg);
84 ri->ri_flg = RI_CENTER | RI_NO_AUTO;
85
86 memset(ri->ri_bits, 0, 0x200000);
87
88 /* use as much of the screen as the font permits */
89 rasops_init(ri, 30, 80);
90
91 rasops_reconfig(ri, ri->ri_height / ri->ri_font->fontheight,
92 ri->ri_width / ri->ri_font->fontwidth);
93
94 gdium_stdscreen.nrows = ri->ri_rows;
95 gdium_stdscreen.ncols = ri->ri_cols;
96 gdium_stdscreen.textops = &ri->ri_ops;
97 gdium_stdscreen.capabilities = ri->ri_caps;
98
99 ri->ri_ops.allocattr(ri, 0, ri->ri_rows - 1, 0, &defattr);
100
101 wsdisplay_preattach(&gdium_stdscreen, ri, 0, 0, defattr);
102
103 return 0;
104 }
105 #else /* NWSDISPLAY > 0 */
106 int
gdium_cnattach(struct gdium_config * gc)107 gdium_cnattach(struct gdium_config *gc)
108 {
109 return -1;
110 }
111 #endif
112