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 |
|