Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
kldir.h
Go to the documentation of this file.
1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License. See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Derived from IRIX <sys/SN/kldir.h>, revision 1.21.
7  *
8  * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
9  * Copyright (C) 1999, 2000 by Ralf Baechle
10  */
11 #ifndef _ASM_SN_KLDIR_H
12 #define _ASM_SN_KLDIR_H
13 
14 
15 /*
16  * The kldir memory area resides at a fixed place in each node's memory and
17  * provides pointers to most other IP27 memory areas. This allows us to
18  * resize and/or relocate memory areas at a later time without breaking all
19  * firmware and kernels that use them. Indices in the array are
20  * permanently dedicated to areas listed below. Some memory areas (marked
21  * below) reside at a permanently fixed location, but are included in the
22  * directory for completeness.
23  */
24 
25 #define KLDIR_MAGIC 0x434d5f53505f5357
26 
27 /*
28  * The upper portion of the memory map applies during boot
29  * only and is overwritten by IRIX/SYMMON.
30  *
31  * MEMORY MAP PER NODE
32  *
33  * 0x2000000 (32M) +-----------------------------------------+
34  * | IO6 BUFFERS FOR FLASH ENET IOC3 |
35  * 0x1F80000 (31.5M) +-----------------------------------------+
36  * | IO6 TEXT/DATA/BSS/stack |
37  * 0x1C00000 (30M) +-----------------------------------------+
38  * | IO6 PROM DEBUG TEXT/DATA/BSS/stack |
39  * 0x0800000 (28M) +-----------------------------------------+
40  * | IP27 PROM TEXT/DATA/BSS/stack |
41  * 0x1B00000 (27M) +-----------------------------------------+
42  * | IP27 CFG |
43  * 0x1A00000 (26M) +-----------------------------------------+
44  * | Graphics PROM |
45  * 0x1800000 (24M) +-----------------------------------------+
46  * | 3rd Party PROM drivers |
47  * 0x1600000 (22M) +-----------------------------------------+
48  * | |
49  * | Free |
50  * | |
51  * +-----------------------------------------+
52  * | UNIX DEBUG Version |
53  * 0x190000 (2M--) +-----------------------------------------+
54  * | SYMMON |
55  * | (For UNIX Debug only) |
56  * 0x34000 (208K) +-----------------------------------------+
57  * | SYMMON STACK [NUM_CPU_PER_NODE] |
58  * | (For UNIX Debug only) |
59  * 0x25000 (148K) +-----------------------------------------+
60  * | KLCONFIG - II (temp) |
61  * | |
62  * | ---------------------------- |
63  * | |
64  * | UNIX NON-DEBUG Version |
65  * 0x19000 (100K) +-----------------------------------------+
66  *
67  *
68  * The lower portion of the memory map contains information that is
69  * permanent and is used by the IP27PROM, IO6PROM and IRIX.
70  *
71  * 0x19000 (100K) +-----------------------------------------+
72  * | |
73  * | PI Error Spools (32K) |
74  * | |
75  * 0x12000 (72K) +-----------------------------------------+
76  * | Unused |
77  * 0x11c00 (71K) +-----------------------------------------+
78  * | CPU 1 NMI Eframe area |
79  * 0x11a00 (70.5K) +-----------------------------------------+
80  * | CPU 0 NMI Eframe area |
81  * 0x11800 (70K) +-----------------------------------------+
82  * | CPU 1 NMI Register save area |
83  * 0x11600 (69.5K) +-----------------------------------------+
84  * | CPU 0 NMI Register save area |
85  * 0x11400 (69K) +-----------------------------------------+
86  * | GDA (1k) |
87  * 0x11000 (68K) +-----------------------------------------+
88  * | Early cache Exception stack |
89  * | and/or |
90  * | kernel/io6prom nmi registers |
91  * 0x10800 (66k) +-----------------------------------------+
92  * | cache error eframe |
93  * 0x10400 (65K) +-----------------------------------------+
94  * | Exception Handlers (UALIAS copy) |
95  * 0x10000 (64K) +-----------------------------------------+
96  * | |
97  * | |
98  * | KLCONFIG - I (permanent) (48K) |
99  * | |
100  * | |
101  * | |
102  * 0x4000 (16K) +-----------------------------------------+
103  * | NMI Handler (Protected Page) |
104  * 0x3000 (12K) +-----------------------------------------+
105  * | ARCS PVECTORS (master node only) |
106  * 0x2c00 (11K) +-----------------------------------------+
107  * | ARCS TVECTORS (master node only) |
108  * 0x2800 (10K) +-----------------------------------------+
109  * | LAUNCH [NUM_CPU] |
110  * 0x2400 (9K) +-----------------------------------------+
111  * | Low memory directory (KLDIR) |
112  * 0x2000 (8K) +-----------------------------------------+
113  * | ARCS SPB (1K) |
114  * 0x1000 (4K) +-----------------------------------------+
115  * | Early cache Exception stack |
116  * | and/or |
117  * | kernel/io6prom nmi registers |
118  * 0x800 (2k) +-----------------------------------------+
119  * | cache error eframe |
120  * 0x400 (1K) +-----------------------------------------+
121  * | Exception Handlers |
122  * 0x0 (0K) +-----------------------------------------+
123  */
124 
125 #ifdef __ASSEMBLY__
126 #define KLDIR_OFF_MAGIC 0x00
127 #define KLDIR_OFF_OFFSET 0x08
128 #define KLDIR_OFF_POINTER 0x10
129 #define KLDIR_OFF_SIZE 0x18
130 #define KLDIR_OFF_COUNT 0x20
131 #define KLDIR_OFF_STRIDE 0x28
132 #endif /* __ASSEMBLY__ */
133 
134 /*
135  * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
136  * we define here. Since it's set up in the prom. We can't redefine it later
137  * and expect more space to be allocated. The way to find out the true size
138  * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
139  * for a particular node.
140  */
141 #define SYMMON_STACK_SIZE 0x8000
142 
143 #if defined(PROM)
144 
145 /*
146  * These defines are prom version dependent. No code other than the IP27
147  * prom should attempt to use these values.
148  */
149 #define IP27_LAUNCH_OFFSET 0x2400
150 #define IP27_LAUNCH_SIZE 0x400
151 #define IP27_LAUNCH_COUNT 2
152 #define IP27_LAUNCH_STRIDE 0x200
153 
154 #define IP27_KLCONFIG_OFFSET 0x4000
155 #define IP27_KLCONFIG_SIZE 0xc000
156 #define IP27_KLCONFIG_COUNT 1
157 #define IP27_KLCONFIG_STRIDE 0
158 
159 #define IP27_NMI_OFFSET 0x3000
160 #define IP27_NMI_SIZE 0x40
161 #define IP27_NMI_COUNT 2
162 #define IP27_NMI_STRIDE 0x40
163 
164 #define IP27_PI_ERROR_OFFSET 0x12000
165 #define IP27_PI_ERROR_SIZE 0x4000
166 #define IP27_PI_ERROR_COUNT 1
167 #define IP27_PI_ERROR_STRIDE 0
168 
169 #define IP27_SYMMON_STK_OFFSET 0x25000
170 #define IP27_SYMMON_STK_SIZE 0xe000
171 #define IP27_SYMMON_STK_COUNT 2
172 /* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
173 #define IP27_SYMMON_STK_STRIDE 0x7000
174 
175 #define IP27_FREEMEM_OFFSET 0x19000
176 #define IP27_FREEMEM_SIZE -1
177 #define IP27_FREEMEM_COUNT 1
178 #define IP27_FREEMEM_STRIDE 0
179 
180 #endif /* PROM */
181 /*
182  * There will be only one of these in a partition so the IO6 must set it up.
183  */
184 #define IO6_GDA_OFFSET 0x11000
185 #define IO6_GDA_SIZE 0x400
186 #define IO6_GDA_COUNT 1
187 #define IO6_GDA_STRIDE 0
188 
189 /*
190  * save area of kernel nmi regs in the prom format
191  */
192 #define IP27_NMI_KREGS_OFFSET 0x11400
193 #define IP27_NMI_KREGS_CPU_SIZE 0x200
194 /*
195  * save area of kernel nmi regs in eframe format
196  */
197 #define IP27_NMI_EFRAME_OFFSET 0x11800
198 #define IP27_NMI_EFRAME_SIZE 0x200
199 
200 #define KLDIR_ENT_SIZE 0x40
201 #define KLDIR_MAX_ENTRIES (0x400 / 0x40)
202 
203 #ifndef __ASSEMBLY__
204 typedef struct kldir_ent_s {
205  u64 magic; /* Indicates validity of entry */
206  off_t offset; /* Offset from start of node space */
207  unsigned long pointer; /* Pointer to area in some cases */
208  size_t size; /* Size in bytes */
209  u64 count; /* Repeat count if array, 1 if not */
210  size_t stride; /* Stride if array, 0 if not */
211  char rsvd[16]; /* Pad entry to 0x40 bytes */
212  /* NOTE: These 16 bytes are used in the Partition KLDIR
213  entry to store partition info. Refer to klpart.h for this. */
214 } kldir_ent_t;
215 #endif /* !__ASSEMBLY__ */
216 
217 #endif /* _ASM_SN_KLDIR_H */
Generated on Thu Jan 10 2013 13:10:53 for Linux Kernel by   doxygen 1.8.2