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4.4.0-1128-aws
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ioerror.h
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/* * 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 */