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

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Revision 4 - (hide annotations)
Mon Oct 8 16:18:00 2007 UTC (16 years, 6 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 dpavlin 2 /*
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 dpavlin 4 * $Id: ps2_bios.c,v 1.30 2005/04/13 20:22:26 debug Exp $
29 dpavlin 2 *
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 dpavlin 4 case 51:
110     debug("[ SIFBIOS rpc_bind(): TODO ]\n");
111     cpu->cd.mips.gpr[MIPS_GPR_V0] = 1; /* TODO */
112     break;
113 dpavlin 2 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 dpavlin 4 case 66:
223     debug("[ SIFBIOS iopmem_free(): TODO ]\n");
224     cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */
225     break;
226 dpavlin 2 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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