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60f56dfc KM |
1 | /* |
2 | * Copyright (c) 1988 University of Utah. | |
3 | * Copyright (c) 1990 The Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * the Systems Programming Group of the University of Utah Computer | |
8 | * Science Department. | |
9 | * | |
1c15e888 C |
10 | * Redistribution is only permitted until one year after the first shipment |
11 | * of 4.4BSD by the Regents. Otherwise, redistribution and use in source and | |
12 | * binary forms are permitted provided that: (1) source distributions retain | |
13 | * this entire copyright notice and comment, and (2) distributions including | |
14 | * binaries display the following acknowledgement: This product includes | |
15 | * software developed by the University of California, Berkeley and its | |
16 | * contributors'' in the documentation or other materials provided with the | |
17 | * distribution and in all advertising materials mentioning features or use | |
18 | * of this software. Neither the name of the University nor the names of | |
19 | * its contributors may be used to endorse or promote products derived from | |
20 | * this software without specific prior written permission. | |
21 | * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED | |
22 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF | |
23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
60f56dfc KM |
24 | * |
25 | * from: Utah $Hdr: grf_tc.c 1.13 89/08/25$ | |
26 | * | |
1c15e888 | 27 | * @(#)grf_tc.c 7.1 (Berkeley) 5/8/90 |
60f56dfc KM |
28 | */ |
29 | ||
30 | #include "grf.h" | |
31 | #if NGRF > 0 | |
32 | ||
33 | /* | |
34 | * Graphics routines for TOPCAT frame buffer | |
35 | */ | |
1c15e888 C |
36 | #include "param.h" |
37 | #include "errno.h" | |
60f56dfc KM |
38 | |
39 | #include "grfioctl.h" | |
40 | #include "grfvar.h" | |
41 | #include "grf_tcreg.h" | |
42 | ||
1c15e888 | 43 | #include "machine/cpu.h" |
60f56dfc KM |
44 | |
45 | /* | |
46 | * Initialize hardware. | |
47 | * Must fill in the grfinfo structure in g_softc. | |
48 | * Returns 0 if hardware not present, non-zero ow. | |
49 | */ | |
50 | tc_init(gp, addr) | |
51 | struct grf_softc *gp; | |
52 | u_char *addr; | |
53 | { | |
54 | register struct tcboxfb *tp = (struct tcboxfb *) addr; | |
55 | struct grfinfo *gi = &gp->g_display; | |
56 | volatile u_char *fbp; | |
57 | u_char save; | |
58 | int fboff; | |
59 | ||
1c15e888 C |
60 | #if defined(HP360) || defined(HP370) |
61 | extern char grfregs[]; | |
62 | if (addr == (u_char *)grfregs) | |
63 | gi->gd_regaddr = (caddr_t) DIOIIBASE; | |
64 | else | |
65 | #endif | |
60f56dfc KM |
66 | gi->gd_regaddr = (caddr_t) UNIOV(addr); |
67 | gi->gd_regsize = 0x10000; | |
68 | gi->gd_fbwidth = (tp->fbwmsb << 8) | tp->fbwlsb; | |
69 | gi->gd_fbheight = (tp->fbhmsb << 8) | tp->fbhlsb; | |
70 | fboff = (tp->fbomsb << 8) | tp->fbolsb; | |
71 | gi->gd_fbaddr = (caddr_t) (*(addr + fboff) << 16); | |
1c15e888 C |
72 | #if defined(HP360) || defined(HP370) |
73 | /* | |
74 | * For DIO II space addresses offset is relative to the DIO II space. | |
75 | * XXX: this should apply to all frame buffer types. | |
76 | */ | |
77 | if (gi->gd_regaddr >= (caddr_t)DIOIIBASE) | |
78 | gi->gd_fbaddr += (int) gi->gd_regaddr; | |
79 | #endif | |
60f56dfc KM |
80 | gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; |
81 | gi->gd_dwidth = (tp->dwmsb << 8) | tp->dwlsb; | |
82 | gi->gd_dheight = (tp->dhmsb << 8) | tp->dhlsb; | |
83 | gi->gd_planes = tp->num_planes; | |
84 | gi->gd_colors = 1 << gi->gd_planes; | |
85 | if (gi->gd_colors == 1) { | |
86 | fbp = (u_char *) IOV(gi->gd_fbaddr); | |
87 | tp->wen = ~0; | |
88 | tp->prr = 0x3; | |
89 | tp->fben = ~0; | |
90 | save = *fbp; | |
91 | *fbp = 0xFF; | |
92 | gi->gd_colors = *fbp + 1; | |
93 | *fbp = save; | |
94 | } | |
95 | return(1); | |
96 | } | |
97 | ||
98 | /* | |
99 | * Change the mode of the display. | |
100 | * Right now all we can do is grfon/grfoff. | |
101 | * Return a UNIX error number or 0 for success. | |
102 | * Function may not be needed anymore. | |
103 | */ | |
104 | /*ARGSUSED*/ | |
105 | tc_mode(gp, cmd) | |
106 | struct grf_softc *gp; | |
107 | { | |
108 | int error = 0; | |
109 | ||
110 | switch (cmd) { | |
111 | case GM_GRFON: | |
112 | case GM_GRFOFF: | |
113 | break; | |
114 | default: | |
115 | error = EINVAL; | |
116 | break; | |
117 | } | |
118 | return(error); | |
119 | } | |
120 | #endif |