Annotation of sys/arch/hp300/dev/tvrx.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: tvrx.c,v 1.1 2006/04/14 21:05:43 miod Exp $ */
2:
3: /*
4: * Copyright (c) 2006, Miodrag Vallat.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26: * POSSIBILITY OF SUCH DAMAGE.
27: *
28: */
29:
30: /*
31: * Graphics routines for the TurboVRX frame buffer
32: */
33:
34: #include <sys/param.h>
35: #include <sys/systm.h>
36: #include <sys/conf.h>
37: #include <sys/device.h>
38: #include <sys/proc.h>
39: #include <sys/ioctl.h>
40:
41: #include <machine/autoconf.h>
42: #include <machine/bus.h>
43: #include <machine/cpu.h>
44:
45: #include <hp300/dev/dioreg.h>
46: #include <hp300/dev/diovar.h>
47: #include <hp300/dev/diodevs.h>
48:
49: #include <dev/cons.h>
50:
51: #include <dev/wscons/wsconsio.h>
52: #include <dev/wscons/wsdisplayvar.h>
53: #include <dev/rasops/rasops.h>
54:
55: #include <hp300/dev/diofbreg.h>
56: #include <hp300/dev/diofbvar.h>
57:
58: struct tvrx_softc {
59: struct device sc_dev;
60: struct diofb *sc_fb;
61: struct diofb sc_fb_store;
62: int sc_scode;
63: };
64:
65: int tvrx_match(struct device *, void *, void *);
66: void tvrx_attach(struct device *, struct device *, void *);
67:
68: struct cfattach tvrx_ca = {
69: sizeof(struct tvrx_softc), tvrx_match, tvrx_attach
70: };
71:
72: struct cfdriver tvrx_cd = {
73: NULL, "tvrx", DV_DULL
74: };
75:
76: int tvrx_reset(struct diofb *, int, struct diofbreg *);
77:
78: int tvrx_ioctl(void *, u_long, caddr_t, int, struct proc *);
79:
80: struct wsdisplay_accessops tvrx_accessops = {
81: tvrx_ioctl,
82: diofb_mmap,
83: diofb_alloc_screen,
84: diofb_free_screen,
85: diofb_show_screen,
86: NULL, /* load_font */
87: NULL, /* scrollback */
88: NULL, /* getchar */
89: NULL /* burner */
90: };
91:
92: /*
93: * Attachment glue
94: */
95:
96: int
97: tvrx_match(struct device *parent, void *match, void *aux)
98: {
99: struct dio_attach_args *da = aux;
100:
101: if (da->da_id != DIO_DEVICE_ID_FRAMEBUFFER ||
102: da->da_secid != DIO_DEVICE_SECID_TIGERSHARK)
103: return (0);
104:
105: return (1);
106: }
107:
108: void
109: tvrx_attach(struct device *parent, struct device *self, void *aux)
110: {
111: struct tvrx_softc *sc = (struct tvrx_softc *)self;
112: struct dio_attach_args *da = aux;
113: struct diofbreg *fbr;
114:
115: sc->sc_scode = da->da_scode;
116: if (sc->sc_scode == conscode) {
117: fbr = (struct diofbreg *)conaddr; /* already mapped */
118: sc->sc_fb = &diofb_cn;
119: } else {
120: sc->sc_fb = &sc->sc_fb_store;
121: fbr = (struct diofbreg *)
122: iomap(dio_scodetopa(sc->sc_scode), da->da_size);
123: if (fbr == NULL ||
124: tvrx_reset(sc->sc_fb, sc->sc_scode, fbr) != 0) {
125: printf(": can't map framebuffer\n");
126: return;
127: }
128: }
129:
130: diofb_end_attach(sc, &tvrx_accessops, sc->sc_fb,
131: sc->sc_scode == conscode, NULL);
132: }
133:
134: /*
135: * Initialize hardware and display routines.
136: */
137: int
138: tvrx_reset(struct diofb *fb, int scode, struct diofbreg *fbr)
139: {
140: int rc;
141:
142: if ((rc = diofb_fbinquire(fb, scode, fbr)) != 0)
143: return (rc);
144:
145: /*
146: * We rely on the PROM to initialize the frame buffer in the mode
147: * we expect it: cleared, overlay plane enabled and accessible
148: * at the beginning of the video memory.
149: *
150: * This is NOT the mode we would end up by simply resetting the
151: * board.
152: */
153:
154: fb->ri.ri_depth = 1;
155: fb->bmv = diofb_mono_windowmove;
156: diofb_fbsetup(fb);
157:
158: return (0);
159: }
160:
161: int
162: tvrx_ioctl(void *v, u_long cmd, caddr_t data, int flags, struct proc *p)
163: {
164: struct diofb *fb = v;
165: struct wsdisplay_fbinfo *wdf;
166:
167: switch (cmd) {
168: case WSDISPLAYIO_GTYPE:
169: *(u_int *)data = WSDISPLAY_TYPE_TVRX;
170: break;
171: case WSDISPLAYIO_SMODE:
172: fb->mapmode = *(u_int *)data;
173: break;
174: case WSDISPLAYIO_GINFO:
175: wdf = (void *)data;
176: wdf->width = fb->ri.ri_width;
177: wdf->height = fb->ri.ri_height;
178: wdf->depth = fb->ri.ri_depth;
179: wdf->cmsize = 0;
180: break;
181: case WSDISPLAYIO_LINEBYTES:
182: *(u_int *)data = fb->ri.ri_stride;
183: break;
184: case WSDISPLAYIO_GETCMAP:
185: case WSDISPLAYIO_PUTCMAP:
186: break; /* until color support is implemented */
187: case WSDISPLAYIO_GVIDEO:
188: case WSDISPLAYIO_SVIDEO:
189: /* unsupported */
190: return (-1);
191: default:
192: return (-1);
193: }
194:
195: return (0);
196: }
197:
198: /*
199: * Console support
200: */
201:
202: void
203: tvrxcninit()
204: {
205: tvrx_reset(&diofb_cn, conscode, (struct diofbreg *)conaddr);
206: diofb_cnattach(&diofb_cn);
207: }
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