1 /*
2 * Copyright (C) 2004-2009 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * COMMENT: SFB TURBOchannel framebuffer (graphics card)
29 *
30 * See include/sfbreg.h (and NetBSD's arch/pmax/dev/sfb.c) for more info.
31 *
32 *
33 * TODO: This is not really implemented yet. It "happens" to work with
34 * NetBSD and OpenBSD, but not with Ultrix yet.
35 */
36
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40
41 #include "devices.h"
42 #include "memory.h"
43 #include "misc.h"
44
45 #include "thirdparty/sfbreg.h"
46
47
48 #define SFB_XSIZE 1280
49 #define SFB_YSIZE 1024
50
51
52 /* #define debug fatal */
53
54
55 #define SFB_REG_SIZE 0x80
56 #define N_SFB_REGS (SFB_REG_SIZE / 4)
57
58
59 struct sfb_data {
60 struct vfb_data *vfb_data;
61
62 uint32_t reg[N_SFB_REGS];
63 };
64
65
DEVICE_ACCESS(sfb)66 DEVICE_ACCESS(sfb)
67 {
68 uint64_t idata = 0, odata = 0;
69 struct sfb_data *d = (struct sfb_data *) extra;
70
71 if (writeflag == MEM_WRITE)
72 idata = memory_readmax64(cpu, data, len);
73
74 if (writeflag==MEM_READ) {
75 odata = d->reg[(relative_addr >> 2) & (N_SFB_REGS - 1)];
76 debug("[ sfb: read from addr 0x%x: 0x%llx ]\n",
77 (int)relative_addr, (long long)odata);
78 } else {
79 d->reg[(relative_addr >> 2) & (N_SFB_REGS - 1)] = idata;
80 debug("[ sfb: write to addr 0x%x: 0x%llx ]\n",
81 (int)relative_addr, (long long)idata);
82 }
83
84 if (writeflag == MEM_READ)
85 memory_writemax64(cpu, data, len, odata);
86
87 return 1;
88 }
89
90
91 /*
92 * dev_sfb_init():
93 */
dev_sfb_init(struct machine * machine,struct memory * mem,uint64_t baseaddr,struct vfb_data * fb)94 void dev_sfb_init(struct machine *machine, struct memory *mem,
95 uint64_t baseaddr, struct vfb_data *fb)
96 {
97 struct sfb_data *d;
98
99 CHECK_ALLOCATION(d = (struct sfb_data *) malloc(sizeof(struct sfb_data)));
100 memset(d, 0, sizeof(struct sfb_data));
101
102 d->vfb_data = fb;
103
104 d->reg[(SFB_VHORIZONTAL - SFB_ASIC_OFFSET) / 4] = SFB_XSIZE >> 2;
105 d->reg[(SFB_VVERTICAL - SFB_ASIC_OFFSET) / 4] = SFB_YSIZE;
106
107 memory_device_register(mem, "sfb", baseaddr, SFB_REG_SIZE,
108 dev_sfb_access, d, DM_DEFAULT, NULL);
109 }
110
111