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1/*
2 * File: arch/blackfin/include/asm/pda.h
3 * Author: Philippe Gerum <rpm@xenomai.org>
4 *
5 * Copyright 2007 Analog Devices Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see the file COPYING, or write
19 * to the Free Software Foundation, Inc.,
20 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#ifndef _ASM_BLACKFIN_PDA_H
24#define _ASM_BLACKFIN_PDA_H
25
26#include <mach/anomaly.h>
27
28#ifndef __ASSEMBLY__
29
30struct blackfin_pda { /* Per-processor Data Area */
31 struct blackfin_pda *next;
32
33 unsigned long syscfg;
34#ifdef CONFIG_SMP
35 unsigned long imask; /* Current IMASK value */
36#endif
37
38 unsigned long *ipdt; /* Start of switchable I-CPLB table */
39 unsigned long *ipdt_swapcount; /* Number of swaps in ipdt */
40 unsigned long *dpdt; /* Start of switchable D-CPLB table */
41 unsigned long *dpdt_swapcount; /* Number of swaps in dpdt */
42
43 /*
44 * Single instructions can have multiple faults, which
45 * need to be handled by traps.c, in irq5. We store
46 * the exception cause to ensure we don't miss a
47 * double fault condition
48 */
49 unsigned long ex_iptr;
50 unsigned long ex_optr;
51 unsigned long ex_buf[4];
52 unsigned long ex_imask; /* Saved imask from exception */
53 unsigned long *ex_stack; /* Exception stack space */
54
55#ifdef ANOMALY_05000261
56 unsigned long last_cplb_fault_retx;
57#endif
58 unsigned long dcplb_fault_addr;
59 unsigned long icplb_fault_addr;
60 unsigned long retx;
61 unsigned long seqstat;
62};
63
64extern struct blackfin_pda cpu_pda[];
65
66void reserve_pda(void);
67
68#endif /* __ASSEMBLY__ */
69
70#endif /* _ASM_BLACKFIN_PDA_H */