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kn02xa.h
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1 /*
2  * Hardware info common to DECstation 5000/1xx systems (otherwise
3  * known as 3min or kn02ba) and Personal DECstations 5000/xx ones
4  * (otherwise known as maxine or kn02ca).
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License. See the file "COPYING" in the main directory of this archive
8  * for more details.
9  *
10  * Copyright (C) 1995,1996 by Paul M. Antoine, some code and definitions
11  * are by courtesy of Chris Fraser.
12  * Copyright (C) 2000, 2002, 2003, 2005 Maciej W. Rozycki
13  *
14  * These are addresses which have to be known early in the boot process.
15  * For other addresses refer to tc.h, ioasic_addrs.h and friends.
16  */
17 #ifndef __ASM_MIPS_DEC_KN02XA_H
18 #define __ASM_MIPS_DEC_KN02XA_H
19 
20 #include <asm/dec/ioasic_addrs.h>
21 
22 #define KN02XA_SLOT_BASE 0x1c000000
23 
24 /*
25  * Memory control ASIC registers.
26  */
27 #define KN02XA_MER 0x0c400000 /* memory error register */
28 #define KN02XA_MSR 0x0c800000 /* memory size register */
29 
30 /*
31  * CPU control ASIC registers.
32  */
33 #define KN02XA_MEM_CONF 0x0e000000 /* write timeout config */
34 #define KN02XA_EAR 0x0e000004 /* error address register */
35 #define KN02XA_BOOT0 0x0e000008 /* boot 0 register */
36 #define KN02XA_MEM_INTR 0x0e00000c /* write err IRQ stat & ack */
37 
38 /*
39  * Memory Error Register bits, common definitions.
40  * The rest is defined in system-specific headers.
41  */
42 #define KN02XA_MER_RES_28 (0xf<<28) /* unused */
43 #define KN02XA_MER_RES_17 (0x3ff<<17) /* unused */
44 #define KN02XA_MER_PAGERR (1<<16) /* 2k page boundary error */
45 #define KN02XA_MER_TRANSERR (1<<15) /* transfer length error */
46 #define KN02XA_MER_PARDIS (1<<14) /* parity error disable */
47 #define KN02XA_MER_SIZE (1<<13) /* r/o mirror of MSR_SIZE */
48 #define KN02XA_MER_RES_12 (1<<12) /* unused */
49 #define KN02XA_MER_BYTERR (0xf<<8) /* byte lane error bitmask: */
50 #define KN02XA_MER_BYTERR_3 (0x8<<8) /* byte lane #3 */
51 #define KN02XA_MER_BYTERR_2 (0x4<<8) /* byte lane #2 */
52 #define KN02XA_MER_BYTERR_1 (0x2<<8) /* byte lane #1 */
53 #define KN02XA_MER_BYTERR_0 (0x1<<8) /* byte lane #0 */
54 #define KN02XA_MER_RES_0 (0xff<<0) /* unused */
55 
56 /*
57  * Memory Size Register bits, common definitions.
58  * The rest is defined in system-specific headers.
59  */
60 #define KN02XA_MSR_RES_27 (0x1f<<27) /* unused */
61 #define KN02XA_MSR_RES_14 (0x7<<14) /* unused */
62 #define KN02XA_MSR_SIZE (1<<13) /* 16M/4M stride */
63 #define KN02XA_MSR_RES_0 (0x1fff<<0) /* unused */
64 
65 /*
66  * Error Address Register bits.
67  */
68 #define KN02XA_EAR_RES_29 (0x7<<29) /* unused */
69 #define KN02XA_EAR_ADDRESS (0x7ffffff<<2) /* address involved */
70 #define KN02XA_EAR_RES_0 (0x3<<0) /* unused */
71 
72 
73 #ifndef __ASSEMBLY__
74 
75 #include <linux/interrupt.h>
76 
77 struct pt_regs;
78 
79 extern void dec_kn02xa_be_init(void);
80 extern int dec_kn02xa_be_handler(struct pt_regs *regs, int is_fixup);
81 extern irqreturn_t dec_kn02xa_be_interrupt(int irq, void *dev_id);
82 #endif
83 
84 #endif /* __ASM_MIPS_DEC_KN02XA_H */