/[gxemul]/trunk/src/devices/dev_ps2_gs.c
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Contents of /trunk/src/devices/dev_ps2_gs.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: 4779 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: dev_ps2_gs.c,v 1.16 2005/02/26 11:40:28 debug Exp $
29 *
30 * Playstation 2 "graphics system".
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 #include "device.h"
38 #include "machine.h"
39 #include "memory.h"
40 #include "misc.h"
41
42
43 #define DEV_PS2_GS_LENGTH 0x2000
44
45 /* NOTE/TODO: This should be the same as in ps2_stuff: */
46 #define DEV_PS2_GIF_FAKE_BASE 0x50000000
47
48 #define N_GS_REGS 0x108
49
50 struct gs_data {
51 uint64_t reg[N_GS_REGS]; /* GS registers */
52 };
53
54 #define GS_S_PMODE_REG 0x00
55 #define GS_S_SMODE1_REG 0x01
56 #define GS_S_SMODE2_REG 0x02
57 #define GS_S_SRFSH_REG 0x03
58 #define GS_S_SYNCH1_REG 0x04
59 #define GS_S_SYNCH2_REG 0x05
60 #define GS_S_SYNCV_REG 0x06
61 #define GS_S_DISPFB1_REG 0x07
62 #define GS_S_DISPLAY1_REG 0x08
63 #define GS_S_DISPFB2_REG 0x09
64 #define GS_S_DISPLAY2_REG 0x0a
65 #define GS_S_EXTBUF_REG0 0x0b
66 #define GS_S_EXTDATA_REG 0x0c
67 #define GS_S_EXTWRITE_REG 0x0d
68 #define GS_S_BGCOLOR_REG 0x0e
69
70 char *gs_reg_names[15] = {
71 "PMODE", "SMODE1", "SMODE2", "SRFSH",
72 "SYNCH1", "SYNCH2", "SYNCV", "DISPFB1",
73 "DISPLAY1", "DISPFB2", "DISPLAY2", "EXTBUF",
74 "EXTDATA", "EXTWRITE", "BGCOLOR"
75 };
76
77 #define GS_S_CSR_REG 0x100
78 #define GS_S_IMR_REG 0x101
79 #define GS_S_BUSDIR_REG 0x104
80 #define GS_S_SIGLBLID_REG 0x108
81
82 char *gs_reg_high_names[4] = {
83 "CSR", "IMR", "BUSDIR", "SIGLBLID"
84 };
85
86
87 /*
88 * dev_ps2_gs_access():
89 */
90 int dev_ps2_gs_access(struct cpu *cpu, struct memory *mem,
91 uint64_t relative_addr, unsigned char *data, size_t len,
92 int writeflag, void *extra)
93 {
94 uint64_t idata = 0, odata = 0;
95 int i, regnr;
96 struct gs_data *d = extra;
97
98 idata = memory_readmax64(cpu, data, len);
99 regnr = relative_addr / 16;
100 if (relative_addr & 0xf) {
101 debug("[ gs unaligned access, addr 0x%x ]\n",
102 (int)relative_addr);
103 return 0;
104 }
105
106 /* Empty the GS FIFO: */
107 d->reg[GS_S_CSR_REG] &= ~(3 << 14);
108 d->reg[GS_S_CSR_REG] |= (1 << 14);
109
110 switch (relative_addr) {
111 default:
112 if (writeflag==MEM_READ) {
113 debug("[ gs read from addr 0x%x ]\n",
114 (int)relative_addr);
115 odata = d->reg[regnr];
116 } else {
117 debug("[ gs write to addr 0x%x:", (int)relative_addr);
118 for (i=0; i<len; i++)
119 debug(" %02x", data[i]);
120 debug(" ]\n");
121 d->reg[regnr] = idata;
122 return 1;
123 }
124 }
125
126 if (writeflag == MEM_READ)
127 memory_writemax64(cpu, data, len, odata);
128
129 return 1;
130 }
131
132
133 /*
134 * devinit_ps2_gs():
135 *
136 * Initialize the Playstation 2 graphics system. This is a bit tricky.
137 * 'gs' is the memory mapped device, as seen by the main processor.
138 * 'gif' is another thing which has its own memory. DMA is used to
139 * transfer stuff to the gif from the main memory.
140 * There is also a framebuffer, which is separated from the main
141 * memory.
142 *
143 * TODO: Make this clearer.
144 */
145 int devinit_ps2_gs(struct devinit *devinit)
146 {
147 struct gs_data *d;
148 char str[100];
149
150 d = malloc(sizeof(struct gs_data));
151 if (d == NULL) {
152 fprintf(stderr, "out of memory\n");
153 exit(1);
154 }
155 memset(d, 0, sizeof(struct gs_data));
156
157 snprintf(str, sizeof(str) - 1, "ps2_gif addr=0x%llx",
158 (long long)DEV_PS2_GIF_FAKE_BASE);
159 device_add(devinit->machine, str);
160
161 memory_device_register(devinit->machine->memory, devinit->name,
162 devinit->addr, DEV_PS2_GS_LENGTH, dev_ps2_gs_access, d,
163 MEM_DEFAULT, NULL);
164
165 return 1;
166 }
167

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