/[gxemul]/trunk/src/include/memory.h
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Contents of /trunk/src/include/memory.h

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Revision 26 - (show annotations)
Mon Oct 8 16:20:10 2007 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 4944 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1264 2006/06/25 11:08:04 debug Exp $
20060624	Replacing the error-prone machine type initialization stuff
		with something more reasonable.
		Finally removing the old "cpu_run" kludge; moving around stuff
		in machine.c and emul.c to better suit the dyntrans system.
		Various minor dyntrans cleanups (renaming translate_address to
		translate_v2p, and experimenting with template physpages).
20060625	Removing the speed hack which separated the vph entries into
		two halves (code vs data); things seem a lot more stable now.
		Minor performance hack: R2000/R3000 cache isolation now only
		clears address translations when going into isolation, not
		when going out of it.
		Fixing the MIPS interrupt problems by letting mtc0 immediately
		cause interrupts.

==============  RELEASE 0.4.0.1  ==============


1 #ifndef MEMORY_H
2 #define MEMORY_H
3
4 /*
5 * Copyright (C) 2004-2006 Anders Gavare. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *
31 * $Id: memory.h,v 1.50 2006/06/24 21:47:24 debug Exp $
32 *
33 * Memory controller related functions.
34 */
35
36 #include <sys/types.h>
37 #include <inttypes.h>
38
39 #include "misc.h"
40
41
42 #define DEFAULT_RAM_IN_MB 32
43 #define MAX_DEVICES 26
44
45 struct cpu;
46 struct translation_page_entry;
47
48 struct memory {
49 uint64_t physical_max;
50 void *pagetable;
51
52 int n_mmapped_devices;
53 int last_accessed_device;
54 /* The following two might speed up things a little bit. */
55 /* (actually maxaddr is the addr after the last address) */
56 uint64_t mmap_dev_minaddr;
57 uint64_t mmap_dev_maxaddr;
58
59 const char *dev_name[MAX_DEVICES];
60 uint64_t dev_baseaddr[MAX_DEVICES];
61 uint64_t dev_endaddr[MAX_DEVICES]; /* after the end! */
62 uint64_t dev_length[MAX_DEVICES];
63 int dev_flags[MAX_DEVICES];
64 void *dev_extra[MAX_DEVICES];
65 int (*dev_f[MAX_DEVICES])(struct cpu *,struct memory *,
66 uint64_t,unsigned char *,size_t,int,void *);
67 unsigned char *dev_dyntrans_data[MAX_DEVICES];
68
69 uint64_t dev_dyntrans_write_low[MAX_DEVICES];
70 uint64_t dev_dyntrans_write_high[MAX_DEVICES];
71
72 int dev_dyntrans_alignment;
73 };
74
75 #define BITS_PER_PAGETABLE 20
76 #define BITS_PER_MEMBLOCK 20
77 #define MAX_BITS 40
78
79
80 /* memory.c: */
81 #define MEM_PCI_LITTLE_ENDIAN 128
82 uint64_t memory_readmax64(struct cpu *cpu, unsigned char *buf, int len);
83 void memory_writemax64(struct cpu *cpu, unsigned char *buf, int len,
84 uint64_t data);
85
86 void *zeroed_alloc(size_t s);
87
88 struct memory *memory_new(uint64_t physical_max, int arch);
89
90 int memory_points_to_string(struct cpu *cpu, struct memory *mem,
91 uint64_t addr, int min_string_length);
92 char *memory_conv_to_string(struct cpu *cpu, struct memory *mem,
93 uint64_t addr, char *buf, int bufsize);
94
95 unsigned char *memory_paddr_to_hostaddr(struct memory *mem,
96 uint64_t paddr, int writeflag);
97
98
99 /* Writeflag: */
100 #define MEM_READ 0
101 #define MEM_WRITE 1
102 #define MEM_DOWNGRADE 128
103
104 /* Misc. flags: */
105 #define CACHE_DATA 0
106 #define CACHE_INSTRUCTION 1
107 #define CACHE_NONE 2
108 #define CACHE_FLAGS_MASK 0x3
109 #define NO_EXCEPTIONS 16
110 #define PHYSICAL 32
111 #define NO_SEGMENTATION 64 /* for X86 */
112 #define MEMORY_USER_ACCESS 128 /* for ARM, at least */
113
114 /* Dyntrans Memory flags: */
115 #define DM_DEFAULT 0
116 #define DM_DYNTRANS_OK 1
117 #define DM_DYNTRANS_WRITE_OK 2
118 #define DM_READS_HAVE_NO_SIDE_EFFECTS 4
119 #define DM_EMULATED_RAM 8
120
121 #define FLAG_WRITEFLAG 1
122 #define FLAG_NOEXCEPTIONS 2
123 #define FLAG_INSTR 4
124
125 int userland_memory_rw(struct cpu *cpu, struct memory *mem, uint64_t vaddr,
126 unsigned char *data, size_t len, int writeflag, int cache);
127 #define MEMORY_ACCESS_FAILED 0
128 #define MEMORY_ACCESS_OK 1
129 #define MEMORY_ACCESS_OK_WRITE 2
130 #define MEMORY_NOT_FULL_PAGE 256
131
132 void memory_device_dyntrans_access(struct cpu *, struct memory *mem,
133 void *extra, uint64_t *low, uint64_t *high);
134
135 #define DEVICE_ACCESS(x) int dev_ ## x ## _access(struct cpu *cpu, \
136 struct memory *mem, uint64_t relative_addr, unsigned char *data, \
137 size_t len, int writeflag, void *extra)
138
139 void memory_device_register(struct memory *mem, const char *,
140 uint64_t baseaddr, uint64_t len, int (*f)(struct cpu *,
141 struct memory *,uint64_t,unsigned char *,size_t,int,void *),
142 void *extra, int flags, unsigned char *dyntrans_data);
143 void memory_device_remove(struct memory *mem, int i);
144
145 uint64_t memory_checksum(struct memory *mem);
146
147
148 #endif /* MEMORY_H */

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