| /* | |
| * 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 */ |