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#include <linux/config.h>
15
16#if defined(CONFIG_SGI_IO)
17#include <asm/hack.h>
18#endif
19
20/*
21 * The kldir memory area resides at a fixed place in each node's memory and
22 * provides pointers to most other IP27 memory areas.  This allows us to
23 * resize and/or relocate memory areas at a later time without breaking all
24 * firmware and kernels that use them.  Indices in the array are
25 * permanently dedicated to areas listed below.  Some memory areas (marked
26 * below) reside at a permanently fixed location, but are included in the
27 * directory for completeness.
28 */
29
30#define KLDIR_MAGIC		0x434d5f53505f5357
31
32/*
33 * The upper portion of the memory map applies during boot
34 * only and is overwritten by IRIX/SYMMON.
35 *
36 *                                    MEMORY MAP PER NODE
37 *
38 * 0x2000000 (32M)         +-----------------------------------------+
39 *                         |      IO6 BUFFERS FOR FLASH ENET IOC3    |
40 * 0x1F80000 (31.5M)       +-----------------------------------------+
41 *                         |      IO6 TEXT/DATA/BSS/stack            |
42 * 0x1C00000 (30M)         +-----------------------------------------+
43 *                         |      IO6 PROM DEBUG TEXT/DATA/BSS/stack |
44 * 0x0800000 (28M)         +-----------------------------------------+
45 *                         |      IP27 PROM TEXT/DATA/BSS/stack      |
46 * 0x1B00000 (27M)         +-----------------------------------------+
47 *                         |      IP27 CFG                           |
48 * 0x1A00000 (26M)         +-----------------------------------------+
49 *                         |      Graphics PROM                      |
50 * 0x1800000 (24M)         +-----------------------------------------+
51 *                         |      3rd Party PROM drivers             |
52 * 0x1600000 (22M)         +-----------------------------------------+
53 *                         |                                         |
54 *                         |      Free                               |
55 *                         |                                         |
56 *                         +-----------------------------------------+
57 *                         |      UNIX DEBUG Version                 |
58 * 0x190000 (2M--)         +-----------------------------------------+
59 *                         |      SYMMON                             |
60 *                         |      (For UNIX Debug only)              |
61 * 0x34000 (208K)          +-----------------------------------------+
62 *                         |      SYMMON STACK [NUM_CPU_PER_NODE]    |
63 *                         |      (For UNIX Debug only)              |
64 * 0x25000 (148K)          +-----------------------------------------+
65 *                         |      KLCONFIG - II (temp)               |
66 *                         |                                         |
67 *                         |    ----------------------------         |
68 *                         |                                         |
69 *                         |      UNIX NON-DEBUG Version             |
70 * 0x19000 (100K)          +-----------------------------------------+
71 *
72 *
73 * The lower portion of the memory map contains information that is
74 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
75 *
76 * 0x19000 (100K)          +-----------------------------------------+
77 *                         |                                         |
78 *                         |      PI Error Spools (32K)              |
79 *                         |                                         |
80 * 0x12000 (72K)           +-----------------------------------------+
81 *                         |      Unused                             |
82 * 0x11c00 (71K)           +-----------------------------------------+
83 *                         |      CPU 1 NMI Eframe area       	     |
84 * 0x11a00 (70.5K)         +-----------------------------------------+
85 *                         |      CPU 0 NMI Eframe area       	     |
86 * 0x11800 (70K)           +-----------------------------------------+
87 *                         |      CPU 1 NMI Register save area       |
88 * 0x11600 (69.5K)         +-----------------------------------------+
89 *                         |      CPU 0 NMI Register save area       |
90 * 0x11400 (69K)           +-----------------------------------------+
91 *                         |      GDA (1k)                           |
92 * 0x11000 (68K)           +-----------------------------------------+
93 *                         |      Early cache Exception stack        |
94 *                         |             and/or                      |
95 *			   |      kernel/io6prom nmi registers	     |
96 * 0x10800  (66k)	   +-----------------------------------------+
97 *			   |      cache error eframe   	 	     |
98 * 0x10400 (65K)           +-----------------------------------------+
99 *                         |      Exception Handlers (UALIAS copy)   |
100 * 0x10000 (64K)           +-----------------------------------------+
101 *                         |                                         |
102 *                         |                                         |
103 *                         |      KLCONFIG - I (permanent) (48K)     |
104 *                         |                                         |
105 *                         |                                         |
106 *                         |                                         |
107 * 0x4000 (16K)            +-----------------------------------------+
108 *                         |      NMI Handler (Protected Page)       |
109 * 0x3000 (12K)            +-----------------------------------------+
110 *                         |      ARCS PVECTORS (master node only)   |
111 * 0x2c00 (11K)            +-----------------------------------------+
112 *                         |      ARCS TVECTORS (master node only)   |
113 * 0x2800 (10K)            +-----------------------------------------+
114 *                         |      LAUNCH [NUM_CPU]                   |
115 * 0x2400 (9K)             +-----------------------------------------+
116 *                         |      Low memory directory (KLDIR)       |
117 * 0x2000 (8K)             +-----------------------------------------+
118 *                         |      ARCS SPB (1K)                      |
119 * 0x1000 (4K)             +-----------------------------------------+
120 *                         |      Early cache Exception stack        |
121 *                         |             and/or                      |
122 *			   |      kernel/io6prom nmi registers	     |
123 * 0x800  (2k)	           +-----------------------------------------+
124 *			   |      cache error eframe   	 	     |
125 * 0x400 (1K)              +-----------------------------------------+
126 *                         |      Exception Handlers                 |
127 * 0x0   (0K)              +-----------------------------------------+
128 */
129
130#ifdef __ASSEMBLY__
131#define KLDIR_OFF_MAGIC			0x00
132#define KLDIR_OFF_OFFSET		0x08
133#define KLDIR_OFF_POINTER		0x10
134#define KLDIR_OFF_SIZE			0x18
135#define KLDIR_OFF_COUNT			0x20
136#define KLDIR_OFF_STRIDE		0x28
137#endif /* __ASSEMBLY__ */
138
139#if !defined(CONFIG_SGI_IO)
140
141/*
142 * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
143 * we define here.  Since it's set up in the prom.  We can't redefine it later
144 * and expect more space to be allocated.  The way to find out the true size
145 * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
146 * for a particular node.
147 */
148#define SYMMON_STACK_SIZE		0x8000
149
150#if defined(PROM) || defined(SABLE)
151
152/*
153 * These defines are prom version dependent.  No code other than the IP27
154 * prom should attempt to use these values.
155 */
156#define IP27_LAUNCH_OFFSET		0x2400
157#define IP27_LAUNCH_SIZE		0x400
158#define IP27_LAUNCH_COUNT		2
159#define IP27_LAUNCH_STRIDE		0x200
160
161#define IP27_KLCONFIG_OFFSET		0x4000
162#define IP27_KLCONFIG_SIZE		0xc000
163#define IP27_KLCONFIG_COUNT		1
164#define IP27_KLCONFIG_STRIDE		0
165
166#define IP27_NMI_OFFSET			0x3000
167#define IP27_NMI_SIZE			0x40
168#define IP27_NMI_COUNT			2
169#define IP27_NMI_STRIDE			0x40
170
171#define IP27_PI_ERROR_OFFSET		0x12000
172#define IP27_PI_ERROR_SIZE		0x4000
173#define IP27_PI_ERROR_COUNT		1
174#define IP27_PI_ERROR_STRIDE		0
175
176#define IP27_SYMMON_STK_OFFSET		0x25000
177#define IP27_SYMMON_STK_SIZE		0xe000
178#define IP27_SYMMON_STK_COUNT		2
179/* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
180#define IP27_SYMMON_STK_STRIDE		0x7000
181
182#define IP27_FREEMEM_OFFSET		0x19000
183#define IP27_FREEMEM_SIZE		-1
184#define IP27_FREEMEM_COUNT		1
185#define IP27_FREEMEM_STRIDE		0
186
187#endif /* PROM || SABLE*/
188/*
189 * There will be only one of these in a partition so the IO6 must set it up.
190 */
191#define IO6_GDA_OFFSET			0x11000
192#define IO6_GDA_SIZE			0x400
193#define IO6_GDA_COUNT			1
194#define IO6_GDA_STRIDE			0
195
196/*
197 * save area of kernel nmi regs in the prom format
198 */
199#define IP27_NMI_KREGS_OFFSET		0x11400
200#define IP27_NMI_KREGS_CPU_SIZE		0x200
201/*
202 * save area of kernel nmi regs in eframe format
203 */
204#define IP27_NMI_EFRAME_OFFSET		0x11800
205#define IP27_NMI_EFRAME_SIZE		0x200
206
207#define KLDIR_ENT_SIZE			0x40
208#define KLDIR_MAX_ENTRIES		(0x400 / 0x40)
209
210#endif	/* !CONFIG_SGI_IO */
211
212#ifndef __ASSEMBLY__
213typedef struct kldir_ent_s {
214	u64		magic;		/* Indicates validity of entry      */
215	off_t		offset;		/* Offset from start of node space  */
216#if defined(CONFIG_SGI_IO)
217	__psunsigned_t	pointer;	/* Pointer to area in some cases    */
218#else
219	unsigned long	pointer;	/* Pointer to area in some cases    */
220#endif
221	size_t		size;		/* Size in bytes 		    */
222	u64		count;		/* Repeat count if array, 1 if not  */
223	size_t		stride;		/* Stride if array, 0 if not        */
224	char		rsvd[16];	/* Pad entry to 0x40 bytes          */
225	/* NOTE: These 16 bytes are used in the Partition KLDIR
226	   entry to store partition info. Refer to klpart.h for this. */
227} kldir_ent_t;
228#endif /* !__ASSEMBLY__ */
229
230#if defined(CONFIG_SGI_IO)
231
232#define KLDIR_ENT_SIZE			0x40
233#define KLDIR_MAX_ENTRIES		(0x400 / 0x40)
234
235/*
236 * The actual offsets of each memory area are machine-dependent
237 */
238#ifdef CONFIG_SGI_IP27
239// Not yet #include <asm/sn/sn0/kldir.h>
240#elif defined(CONFIG_SGI_IP35)
241#include <asm/sn/sn1/kldir.h>
242#else
243#error "kldir.h is currently defined for IP27 and IP35 platforms only"
244#endif
245
246#endif	/* CONFIG_SGI_IO */
247
248#endif /* _ASM_SN_KLDIR_H */
249