/[gxemul]/trunk/src/devices/dev_kn220.c
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Contents of /trunk/src/devices/dev_kn220.c

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Revision 4 - (show annotations)
Mon Oct 8 16:18:00 2007 UTC (12 years, 3 months ago) by dpavlin
File MIME type: text/plain
File size: 5212 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.707 2005/04/27 16:37:33 debug Exp $
20050408	Some minor updates to the wdc. Linux now doesn't complain
		anymore if a disk is non-present.
20050409	Various minor fixes (a bintrans bug, and some other things).
		The wdc seems to work with Playstation2 emulation, but there
		is a _long_ annoying delay when disks are detected.
		Fixing a really important bintrans bug (when devices and RAM
		are mixed within 4KB pages), which was triggered with
		NetBSD/playstation2 kernels.
20050410	Adding a dummy dev_ps2_ether (just so that NetBSD doesn't
		complain as much during bootup).
		Symbols starting with '$' are now ignored.
		Renaming dev_ps2_ohci.c to dev_ohci.c, etc.
20050411	Moving the bintrans-cache-isolation check from cpu_mips.c to
		cpu_mips_coproc.c. (I thought this would give a speedup, but
		it's not noticable.)
		Better playstation2 sbus interrupt code.
		Skip ahead many ticks if the count register is read manually.
		(This increases the speed of delay-loops that simply read
		the count register.)
20050412	Updates to the playstation2 timer/interrupt code.
		Some other minor updates.
20050413	NetBSD/cobalt runs from a disk image :-) including userland;
		updating the documentation on how to install NetBSD/cobalt
		using NetBSD/pmax (!).
		Some minor bintrans updates (no real speed improvement) and
		other minor updates (playstation2 now uses the -o options).
20050414	Adding a dummy x86 (and AMD64) mode.
20050415	Adding some (32-bit and 16-bit) x86 instructions.
		Adding some initial support for non-SCSI, non-IDE floppy
		images. (The x86 mode can boot from these, more or less.)
		Moving the devices/ and include/ directories to src/devices/
		and src/include/, respectively.
20050416	Continuing on the x86 stuff. (Adding pc_bios.c and some simple
		support for software interrupts in 16-bit mode.)
20050417	Ripping out most of the x86 instruction decoding stuff, trying
		to rewrite it in a cleaner way.
		Disabling some of the least working CPU families in the
		configure script (sparc, x86, alpha, hppa), so that they are
		not enabled by default.
20050418	Trying to fix the bug which caused problems when turning on
		and off bintrans interactively, by flushing the bintrans cache
		whenever bintrans is manually (re)enabled.
20050419	Adding the 'lswi' ppc instruction.
		Minor updates to the x86 instruction decoding.
20050420	Renaming x86 register name indices from R_xx to X86_R_xx (this
		makes building on Tru64 nicer).
20050422	Adding a check for duplicate MIPS TLB entries on tlbwr/tlbwi.
20050427	Adding screenshots to guestoses.html.
		Some minor fixes and testing for the next release.

==============  RELEASE 0.3.2  ==============


1 /*
2 * Copyright (C) 2004-2005 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 * $Id: dev_kn220.c,v 1.3 2005/02/21 07:01:08 debug Exp $
29 *
30 * DEC KN220 (DECsystem 5500) devices.
31 *
32 * o) I/O board
33 * o) SGEC (ethernet) (Called "ne" in Ultrix.)
34 *
35 * TODO: Study docs.
36 */
37
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41
42 #include "devices.h"
43 #include "memory.h"
44 #include "misc.h"
45
46 #define IOBOARD_DEBUG
47
48 struct dec5500_ioboard_data {
49 int dummy;
50 };
51
52 #define SGEC_DEBUG
53
54 struct sgec_data {
55 int irq_nr;
56 };
57
58
59 /*
60 * dev_dec5500_ioboard_access():
61 */
62 int dev_dec5500_ioboard_access(struct cpu *cpu, struct memory *mem,
63 uint64_t relative_addr, unsigned char *data, size_t len,
64 int writeflag, void *extra)
65 {
66 /* struct dec5500_ioboard_data *d =
67 (struct dec5500_ioboard_data *) extra; */
68 uint64_t idata = 0, odata = 0;
69
70 idata = memory_readmax64(cpu, data, len);
71
72 #ifdef IOBOARD_DEBUG
73 if (writeflag == MEM_WRITE)
74 debug("[ dec5500_ioboard: write to address 0x%llx, "
75 "data=0x%016llx ]\n", (long long)relative_addr,
76 (long long)idata);
77 else
78 debug("[ dec5500_ioboard: read from address 0x%llx ]\n",
79 (long long)relative_addr);
80 #endif
81
82 switch (relative_addr) {
83 case 0:
84 if (writeflag == MEM_READ)
85 /*
86 * TODO: One of these bits indicate I/O board
87 * present.
88 */
89 odata = 0xffffffffULL;
90 break;
91
92 default:
93 if (writeflag == MEM_WRITE)
94 debug("[ dec5500_ioboard: unimplemented write to "
95 "address 0x%llx, data=0x%016llx ]\n",
96 (long long)relative_addr, (long long)idata);
97 else
98 debug("[ dec5500_ioboard: unimplemented read from"
99 " address 0x%llx ]\n", (long long)relative_addr);
100 }
101
102 if (writeflag == MEM_READ)
103 memory_writemax64(cpu, data, len, odata);
104
105 return 1;
106 }
107
108
109 /*
110 * dev_sgec_access():
111 */
112 int dev_sgec_access(struct cpu *cpu, struct memory *mem,
113 uint64_t relative_addr, unsigned char *data, size_t len,
114 int writeflag, void *extra)
115 {
116 /* struct sgec_data *d = (struct sgec_data *) extra; */
117 uint64_t idata = 0, odata = 0;
118
119 idata = memory_readmax64(cpu, data, len);
120
121 #ifdef SGEC_DEBUG
122 if (writeflag == MEM_WRITE)
123 debug("[ sgec: write to address 0x%llx, data=0x%016llx ]\n",
124 (long long)relative_addr, (long long)idata);
125 else
126 debug("[ sgec: read from address 0x%llx ]\n",
127 (long long)relative_addr);
128 #endif
129
130 switch (relative_addr) {
131 case 0x14:
132 if (writeflag == MEM_READ)
133 odata = 0x80000000;
134 break;
135
136 default:
137 if (writeflag == MEM_WRITE)
138 debug("[ sgec: unimplemented write to address 0x%llx,"
139 " data=0x%016llx ]\n", (long long)relative_addr,
140 (long long)idata);
141 else
142 debug("[ sgec: unimplemented read from address "
143 "0x%llx ]\n", (long long)relative_addr);
144 }
145
146 if (writeflag == MEM_READ)
147 memory_writemax64(cpu, data, len, odata);
148
149 return 1;
150 }
151
152
153 /*
154 * dev_sgec_init():
155 */
156 void dev_sgec_init(struct memory *mem, uint64_t baseaddr, int irq_nr)
157 {
158 struct sgec_data *d = malloc(sizeof(struct sgec_data));
159 if (d == NULL) {
160 fprintf(stderr, "out of memory\n");
161 exit(1);
162 }
163 memset(d, 0, sizeof(struct sgec_data));
164 d->irq_nr = irq_nr;
165
166 memory_device_register(mem, "sgec", baseaddr, DEV_SGEC_LENGTH,
167 dev_sgec_access, (void *)d, MEM_DEFAULT, NULL);
168 }
169
170
171 /*
172 * dev_dec5500_ioboard_init():
173 */
174 struct dec5500_ioboard_data *dev_dec5500_ioboard_init(struct cpu *cpu,
175 struct memory *mem, uint64_t baseaddr)
176 {
177 struct dec5500_ioboard_data *d =
178 malloc(sizeof(struct dec5500_ioboard_data));
179 if (d == NULL) {
180 fprintf(stderr, "out of memory\n");
181 exit(1);
182 }
183 memset(d, 0, sizeof(struct dec5500_ioboard_data));
184
185 memory_device_register(mem, "dec5500_ioboard", baseaddr,
186 DEV_DEC5500_IOBOARD_LENGTH, dev_dec5500_ioboard_access,
187 (void *)d, MEM_DEFAULT, NULL);
188
189 return d;
190 }
191

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