/*
|
* This file is subject to the terms and conditions of the GNU General Public
|
* License. See the file "COPYING" in the main directory of this archive
|
* for more details.
|
*
|
* Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
|
*/
|
#ifndef _ASM_IA64_SN_IOERROR_H
|
#define _ASM_IA64_SN_IOERROR_H
|
|
/*
|
* IO error structure.
|
*
|
* This structure would expand to hold the information retrieved from
|
* all IO related error registers.
|
*
|
* This structure is defined to hold all system specific
|
* information related to a single error.
|
*
|
* This serves a couple of purpose.
|
* - Error handling often involves translating one form of address to other
|
* form. So, instead of having different data structures at each level,
|
* we have a single structure, and the appropriate fields get filled in
|
* at each layer.
|
* - This provides a way to dump all error related information in any layer
|
* of erorr handling (debugging aid).
|
*
|
* A second possibility is to allow each layer to define its own error
|
* data structure, and fill in the proper fields. This has the advantage
|
* of isolating the layers.
|
* A big concern is the potential stack usage (and overflow), if each layer
|
* defines these structures on stack (assuming we don't want to do kmalloc.
|
*
|
* Any layer wishing to pass extra information to a layer next to it in
|
* error handling hierarchy, can do so as a separate parameter.
|
*/
|
|
typedef struct io_error_s {
|
/* Bit fields indicating which structure fields are valid */
|
union {
|
struct {
|
unsigned ievb_errortype:1;
|
unsigned ievb_widgetnum:1;
|
unsigned ievb_widgetdev:1;
|
unsigned ievb_srccpu:1;
|
unsigned ievb_srcnode:1;
|
unsigned ievb_errnode:1;
|
unsigned ievb_sysioaddr:1;
|
unsigned ievb_xtalkaddr:1;
|
unsigned ievb_busspace:1;
|
unsigned ievb_busaddr:1;
|
unsigned ievb_vaddr:1;
|
unsigned ievb_memaddr:1;
|
unsigned ievb_epc:1;
|
unsigned ievb_ef:1;
|
unsigned ievb_tnum:1;
|
} iev_b;
|
unsigned iev_a;
|
} ie_v;
|
|
short ie_errortype; /* error type: extra info about error */
|
short ie_widgetnum; /* Widget number that's in error */
|
short ie_widgetdev; /* Device within widget in error */
|
cpuid_t ie_srccpu; /* CPU on srcnode generating error */
|
cnodeid_t ie_srcnode; /* Node which caused the error */
|
cnodeid_t ie_errnode; /* Node where error was noticed */
|
iopaddr_t ie_sysioaddr; /* Sys specific IO address */
|
iopaddr_t ie_xtalkaddr; /* Xtalk (48bit) addr of Error */
|
iopaddr_t ie_busspace; /* Bus specific address space */
|
iopaddr_t ie_busaddr; /* Bus specific address */
|
caddr_t ie_vaddr; /* Virtual address of error */
|
iopaddr_t ie_memaddr; /* Physical memory address */
|
caddr_t ie_epc; /* pc when error reported */
|
caddr_t ie_ef; /* eframe when error reported */
|
short ie_tnum; /* Xtalk TNUM field */
|
} ioerror_t;
|
|
#define IOERROR_INIT(e) do { (e)->ie_v.iev_a = 0; } while (0)
|
#define IOERROR_SETVALUE(e,f,v) do { (e)->ie_ ## f = (v); (e)->ie_v.iev_b.ievb_ ## f = 1; } while (0)
|
|
#endif /* _ASM_IA64_SN_IOERROR_H */
|
