/[gxemul]/trunk/src/ps2_bios.c
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Contents of /trunk/src/ps2_bios.c

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Revision 4 - (show annotations)
Mon Oct 8 16:18:00 2007 UTC (12 years, 2 months ago) by dpavlin
File MIME type: text/plain
File size: 7438 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) 2003-2005 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: ps2_bios.c,v 1.30 2005/04/13 20:22:26 debug Exp $
29 *
30 * Playstation 2 SIFBIOS emulation.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <sys/types.h>
37 #include <sys/time.h>
38 #include <sys/resource.h>
39
40 #include "console.h"
41 #include "cpu.h"
42 #include "cpu_mips.h"
43 #include "machine.h"
44 #include "misc.h"
45
46
47 extern int quiet_mode;
48
49
50 /*
51 * playstation2_sifbios_emul():
52 */
53 int playstation2_sifbios_emul(struct cpu *cpu)
54 {
55 int callnr;
56
57 callnr = cpu->cd.mips.gpr[MIPS_GPR_A0];
58
59 switch (callnr) {
60 case 0: /* getver() */
61 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0x200; /* TODO */
62 break;
63 case 1: /* halt(int mode) */
64 debug("[ SIFBIOS halt(0x%llx) ]\n",
65 (long long)cpu->cd.mips.gpr[MIPS_GPR_A1]);
66 cpu->running = 0;
67 cpu->dead = 1;
68 break;
69 case 2: /* setdve(int mode) */
70 debug("[ SIFBIOS setdve(0x%llx) ]\n",
71 (long long)cpu->cd.mips.gpr[MIPS_GPR_A1]);
72 break;
73 case 3: /* putchar(int ch) */
74 /* debug("[ SIFBIOS putchar(0x%x) ]\n",
75 (char)cpu->cd.mips.gpr[MIPS_GPR_A1]); */
76 console_putchar(cpu->machine->main_console_handle,
77 cpu->cd.mips.gpr[MIPS_GPR_A1]);
78 break;
79 case 4: /* getchar() */
80 /* This is untested. TODO */
81 /* debug("[ SIFBIOS getchar() ]\n"; */
82 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0;
83 if (console_charavail(cpu->machine->main_console_handle))
84 cpu->cd.mips.gpr[MIPS_GPR_V0] = console_readchar(
85 cpu->machine->main_console_handle);
86 break;
87 case 16: /* dma_init() */
88 debug("[ SIFBIOS dma_init() ]\n");
89 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */
90 break;
91 case 17: /* dma_exit() */
92 debug("[ SIFBIOS dma_exit() ]\n");
93 break;
94 case 32: /* cmd_init() */
95 debug("[ SIFBIOS cmd_init() ]\n");
96 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */
97 break;
98 case 33: /* cmd_exit() */
99 debug("[ SIFBIOS cmd_exit() ]\n");
100 break;
101 case 48:
102 debug("[ SIFBIOS rpc_init(): TODO ]\n");
103 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */
104 break;
105 case 49:
106 debug("[ SIFBIOS rpc_exit(): TODO ]\n");
107 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */
108 break;
109 case 51:
110 debug("[ SIFBIOS rpc_bind(): TODO ]\n");
111 cpu->cd.mips.gpr[MIPS_GPR_V0] = 1; /* TODO */
112 break;
113 case 64:
114 fatal("[ SIFBIOS SBR_IOPH_INIT(0x%x,0x%x,0x%x): TODO ]\n",
115 (int)cpu->cd.mips.gpr[MIPS_GPR_A1],
116 (int)cpu->cd.mips.gpr[MIPS_GPR_A2],
117 (int)cpu->cd.mips.gpr[MIPS_GPR_A3]);
118
119 /*
120 * This is really really ugly: TODO
121 *
122 * Linux and NetBSD seem to work, but it's an ugly hack.
123 * This should really be a callback thingy...
124 *
125 * NetBSD has a done-word which should be set to 1.
126 * Linux has one done-word which should be set to 1, and
127 * one which should be set to 0.
128 *
129 * The code as it is right now probably overwrites stuff in
130 * memory that shouldn't be touched. Not good.
131 *
132 * Linux: err = sbios_rpc(SBR_IOPH_INIT, NULL, &result);
133 * err should be 0 (just as NetBSD),
134 * and result should be set to 0 as well.
135 */
136 {
137 uint32_t tmpaddr;
138
139 tmpaddr = load_32bit_word(cpu,
140 cpu->cd.mips.gpr[MIPS_GPR_A1] + 0);
141 fatal(" +0: %08x\n", tmpaddr);
142 tmpaddr = load_32bit_word(cpu,
143 cpu->cd.mips.gpr[MIPS_GPR_A1] + 4);
144 fatal(" +4: %08x\n", tmpaddr);
145 tmpaddr = load_32bit_word(cpu,
146 cpu->cd.mips.gpr[MIPS_GPR_A1] + 8);
147 fatal(" +8: %08x\n", tmpaddr);
148 tmpaddr = load_32bit_word(cpu,
149 cpu->cd.mips.gpr[MIPS_GPR_A1] + 12);
150 fatal(" +12: %08x\n", tmpaddr);
151
152 /* TODO: This is probably netbsd specific */
153 tmpaddr = load_32bit_word(cpu,
154 cpu->cd.mips.gpr[MIPS_GPR_A1] + 12);
155 fatal("tmpaddr 1 = 0x%08x\n", tmpaddr);
156
157 /* "done" word for NetBSD: */
158 store_32bit_word(cpu, tmpaddr, 1);
159 /* "done" word A for Linux: */
160 store_32bit_word(cpu, tmpaddr + 4, 1);
161 /* "done" word B for Linux: */
162 store_32bit_word(cpu,
163 cpu->cd.mips.gpr[MIPS_GPR_A1] + 0, 0);
164 }
165 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0;
166 break;
167 case 65:
168 fatal("[ SIFBIOS alloc iop heap(0x%x) ]\n",
169 (int)cpu->cd.mips.gpr[MIPS_GPR_A1]);
170
171 /*
172 * Linux uses this to allocate "heap" for the OHCI USB
173 * controller.
174 *
175 * TODO: This naïve implementation does not allow for a
176 * "free iop heap" function: :-/
177 */
178
179 {
180 uint32_t tmpaddr;
181 static uint32_t return_addr = 0x1000;
182 /* 0xbc000000; */
183 uint32_t size;
184
185 tmpaddr = load_32bit_word(cpu,
186 cpu->cd.mips.gpr[MIPS_GPR_A1] + 0);
187 fatal(" +0: %08x (result should be placed here)\n",
188 tmpaddr);
189 tmpaddr = load_32bit_word(cpu,
190 cpu->cd.mips.gpr[MIPS_GPR_A1] + 4);
191 fatal(" +4: %08x (*arg)\n", tmpaddr);
192 size = load_32bit_word(cpu, tmpaddr + 0);
193 fatal(" size = %08x\n", size);
194 tmpaddr = load_32bit_word(cpu,
195 cpu->cd.mips.gpr[MIPS_GPR_A1] + 8);
196 fatal(" +8: %08x (*func (void *, int))\n", tmpaddr);
197 tmpaddr = load_32bit_word(cpu,
198 cpu->cd.mips.gpr[MIPS_GPR_A1] + 12);
199 fatal(" +12: %08x (*para)\n", tmpaddr);
200
201 /* TODO: This is probably netbsd specific */
202 tmpaddr = load_32bit_word(cpu,
203 cpu->cd.mips.gpr[MIPS_GPR_A1] + 12);
204 fatal("tmpaddr 1 = 0x%08x\n", tmpaddr);
205
206 /* "done" word for NetBSD: */
207 store_32bit_word(cpu, tmpaddr, 1);
208 /* "done" word A for Linux: */
209 store_32bit_word(cpu, tmpaddr + 4, 1);
210
211 /* Result: */
212 store_32bit_word(cpu,
213 cpu->cd.mips.gpr[MIPS_GPR_A1] + 0, return_addr);
214
215 return_addr += size;
216 /* Round up to next page: */
217 return_addr += 4095;
218 return_addr &= ~4095;
219 }
220 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0;
221 break;
222 case 66:
223 debug("[ SIFBIOS iopmem_free(): TODO ]\n");
224 cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */
225 break;
226 default:
227 quiet_mode = 0;
228 cpu_register_dump(cpu->machine, cpu, 1, 0x1);
229 printf("\n");
230 fatal("Playstation 2 SIFBIOS emulation: "
231 "unimplemented call nr 0x%x\n", callnr);
232 cpu->running = 0;
233 cpu->dead = 1;
234 }
235
236 return 1;
237 }
238

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