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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 | 24 | * |
1c15e888 | 25 | * from: Utah $Hdr: grf_rb.c 1.10 89/04/11$ |
60f56dfc | 26 | * |
1c15e888 | 27 | * @(#)grf_rb.c 7.2 (Berkeley) 5/25/90 |
60f56dfc KM |
28 | */ |
29 | ||
30 | #include "grf.h" | |
31 | #if NGRF > 0 | |
32 | ||
33 | /* | |
34 | * Graphics routines for the Renaissance, HP98720 Graphics system. | |
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_rbreg.h" | |
42 | ||
1c15e888 | 43 | #include "machine/cpu.h" |
60f56dfc | 44 | |
60f56dfc KM |
45 | /* |
46 | * Initialize hardware. | |
47 | * Must point g_display at a grfinfo structure describing the hardware. | |
48 | * Returns 0 if hardware not present, non-zero ow. | |
49 | */ | |
50 | rb_init(gp, addr) | |
51 | struct grf_softc *gp; | |
52 | u_char *addr; | |
53 | { | |
54 | register struct rboxfb *rbp; | |
55 | struct grfinfo *gi = &gp->g_display; | |
56 | int fboff; | |
57 | ||
58 | rbp = (struct rboxfb *) addr; | |
59 | gi->gd_regaddr = (caddr_t) UNIOV(addr); | |
60 | gi->gd_regsize = 0x20000; | |
61 | gi->gd_fbwidth = (rbp->fbwmsb << 8) | rbp->fbwlsb; | |
62 | gi->gd_fbheight = (rbp->fbhmsb << 8) | rbp->fbhlsb; | |
63 | fboff = (rbp->fbomsb << 8) | rbp->fbolsb; | |
64 | gi->gd_fbaddr = (caddr_t) (*(addr + fboff) << 16); | |
65 | gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; | |
66 | gi->gd_dwidth = (rbp->dwmsb << 8) | rbp->dwlsb; | |
67 | gi->gd_dheight = (rbp->dwmsb << 8) | rbp->dwlsb; | |
68 | gi->gd_planes = 0; /* ?? */ | |
69 | gi->gd_colors = 256; | |
70 | return(1); | |
71 | } | |
72 | ||
60f56dfc KM |
73 | /* |
74 | * Change the mode of the display. | |
75 | * Right now all we can do is grfon/grfoff. | |
76 | * Return a UNIX error number or 0 for success. | |
77 | */ | |
78 | rb_mode(gp, cmd) | |
79 | register struct grf_softc *gp; | |
80 | { | |
81 | register struct rboxfb *rbp; | |
82 | int error = 0; | |
83 | ||
84 | rbp = (struct rboxfb *) IOV(gp->g_display.gd_regaddr); | |
85 | switch (cmd) { | |
86 | /* | |
87 | * The minimal register info here is from the Renaissance X driver. | |
88 | */ | |
89 | case GM_GRFON: | |
90 | case GM_GRFOFF: | |
91 | break; | |
92 | case GM_GRFOVON: | |
93 | rbp->write_enable = 0; | |
94 | rbp->opwen = 0xF; | |
95 | rbp->drive = 0x10; | |
96 | break; | |
97 | case GM_GRFOVOFF: | |
98 | rbp->opwen = 0; | |
99 | rbp->write_enable = 0xffffffff; | |
100 | rbp->drive = 0x01; | |
101 | break; | |
102 | default: | |
103 | error = EINVAL; | |
104 | break; | |
105 | } | |
106 | return(error); | |
107 | } | |
108 | ||
109 | #endif |