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alistair23-linux/include/linux/cper.h
Luck, Tony 4c62360d75 efi: Handle memory error structures produced based on old versions of standard 
The memory error record structure includes as its first field a
bitmask of which subsequent fields are valid. The allows new fields
to be added to the structure while keeping compatibility with older
software that parses these records. This mechanism was used between
versions 2.2 and 2.3 to add four new fields, growing the size of the
structure from 73 bytes to 80. But Linux just added all the new
fields so this test:
	if (gdata->error_data_length >= sizeof(*mem_err))
		cper_print_mem(newpfx, mem_err);
	else
		goto err_section_too_small;
now make Linux complain about old format records being too short.

Add a definition for the old format of the structure and use that
for the minimum size check. Pass the actual size to cper_print_mem()
so it can sanity check the validation_bits field to ensure that if
a BIOS using the old format sets bits as if it were new, we won't
access fields beyond the end of the structure.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-07-15 13:30:38 +01:00

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/*
* UEFI Common Platform Error Record
*
* Copyright (C) 2010, Intel Corp.
* Author: Huang Ying <ying.huang@intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef LINUX_CPER_H
#define LINUX_CPER_H
#include <linux/uuid.h>
#include <linux/trace_seq.h>
/* CPER record signature and the size */
#define CPER_SIG_RECORD "CPER"
#define CPER_SIG_SIZE 4
/* Used in signature_end field in struct cper_record_header */
#define CPER_SIG_END 0xffffffff
/*
* CPER record header revision, used in revision field in struct
* cper_record_header
*/
#define CPER_RECORD_REV 0x0100
/*
* CPER record length contains the CPER fields which are relevant for further
* handling of a memory error in userspace (we don't carry all the fields
* defined in the UEFI spec because some of them don't make any sense.)
* Currently, a length of 256 should be more than enough.
*/
#define CPER_REC_LEN 256
/*
* Severity difinition for error_severity in struct cper_record_header
* and section_severity in struct cper_section_descriptor
*/
enum {
CPER_SEV_RECOVERABLE,
CPER_SEV_FATAL,
CPER_SEV_CORRECTED,
CPER_SEV_INFORMATIONAL,
};
/*
* Validation bits difinition for validation_bits in struct
* cper_record_header. If set, corresponding fields in struct
* cper_record_header contain valid information.
*
* corresponds platform_id
*/
#define CPER_VALID_PLATFORM_ID 0x0001
/* corresponds timestamp */
#define CPER_VALID_TIMESTAMP 0x0002
/* corresponds partition_id */
#define CPER_VALID_PARTITION_ID 0x0004
/*
* Notification type used to generate error record, used in
* notification_type in struct cper_record_header
*
* Corrected Machine Check
*/
#define CPER_NOTIFY_CMC \
UUID_LE(0x2DCE8BB1, 0xBDD7, 0x450e, 0xB9, 0xAD, 0x9C, 0xF4, \
0xEB, 0xD4, 0xF8, 0x90)
/* Corrected Platform Error */
#define CPER_NOTIFY_CPE \
UUID_LE(0x4E292F96, 0xD843, 0x4a55, 0xA8, 0xC2, 0xD4, 0x81, \
0xF2, 0x7E, 0xBE, 0xEE)
/* Machine Check Exception */
#define CPER_NOTIFY_MCE \
UUID_LE(0xE8F56FFE, 0x919C, 0x4cc5, 0xBA, 0x88, 0x65, 0xAB, \
0xE1, 0x49, 0x13, 0xBB)
/* PCI Express Error */
#define CPER_NOTIFY_PCIE \
UUID_LE(0xCF93C01F, 0x1A16, 0x4dfc, 0xB8, 0xBC, 0x9C, 0x4D, \
0xAF, 0x67, 0xC1, 0x04)
/* INIT Record (for IPF) */
#define CPER_NOTIFY_INIT \
UUID_LE(0xCC5263E8, 0x9308, 0x454a, 0x89, 0xD0, 0x34, 0x0B, \
0xD3, 0x9B, 0xC9, 0x8E)
/* Non-Maskable Interrupt */
#define CPER_NOTIFY_NMI \
UUID_LE(0x5BAD89FF, 0xB7E6, 0x42c9, 0x81, 0x4A, 0xCF, 0x24, \
0x85, 0xD6, 0xE9, 0x8A)
/* BOOT Error Record */
#define CPER_NOTIFY_BOOT \
UUID_LE(0x3D61A466, 0xAB40, 0x409a, 0xA6, 0x98, 0xF3, 0x62, \
0xD4, 0x64, 0xB3, 0x8F)
/* DMA Remapping Error */
#define CPER_NOTIFY_DMAR \
UUID_LE(0x667DD791, 0xC6B3, 0x4c27, 0x8A, 0x6B, 0x0F, 0x8E, \
0x72, 0x2D, 0xEB, 0x41)
/*
* Flags bits definitions for flags in struct cper_record_header
* If set, the error has been recovered
*/
#define CPER_HW_ERROR_FLAGS_RECOVERED 0x1
/* If set, the error is for previous boot */
#define CPER_HW_ERROR_FLAGS_PREVERR 0x2
/* If set, the error is injected for testing */
#define CPER_HW_ERROR_FLAGS_SIMULATED 0x4
/*
* CPER section header revision, used in revision field in struct
* cper_section_descriptor
*/
#define CPER_SEC_REV 0x0100
/*
* Validation bits difinition for validation_bits in struct
* cper_section_descriptor. If set, corresponding fields in struct
* cper_section_descriptor contain valid information.
*
* corresponds fru_id
*/
#define CPER_SEC_VALID_FRU_ID 0x1
/* corresponds fru_text */
#define CPER_SEC_VALID_FRU_TEXT 0x2
/*
* Flags bits definitions for flags in struct cper_section_descriptor
*
* If set, the section is associated with the error condition
* directly, and should be focused on
*/
#define CPER_SEC_PRIMARY 0x0001
/*
* If set, the error was not contained within the processor or memory
* hierarchy and the error may have propagated to persistent storage
* or network
*/
#define CPER_SEC_CONTAINMENT_WARNING 0x0002
/* If set, the component must be re-initialized or re-enabled prior to use */
#define CPER_SEC_RESET 0x0004
/* If set, Linux may choose to discontinue use of the resource */
#define CPER_SEC_ERROR_THRESHOLD_EXCEEDED 0x0008
/*
* If set, resource could not be queried for error information due to
* conflicts with other system software or resources. Some fields of
* the section will be invalid
*/
#define CPER_SEC_RESOURCE_NOT_ACCESSIBLE 0x0010
/*
* If set, action has been taken to ensure error containment (such as
* poisoning data), but the error has not been fully corrected and the
* data has not been consumed. Linux may choose to take further
* corrective action before the data is consumed
*/
#define CPER_SEC_LATENT_ERROR 0x0020
/*
* Section type definitions, used in section_type field in struct
* cper_section_descriptor
*
* Processor Generic
*/
#define CPER_SEC_PROC_GENERIC \
UUID_LE(0x9876CCAD, 0x47B4, 0x4bdb, 0xB6, 0x5E, 0x16, 0xF1, \
0x93, 0xC4, 0xF3, 0xDB)
/* Processor Specific: X86/X86_64 */
#define CPER_SEC_PROC_IA \
UUID_LE(0xDC3EA0B0, 0xA144, 0x4797, 0xB9, 0x5B, 0x53, 0xFA, \
0x24, 0x2B, 0x6E, 0x1D)
/* Processor Specific: IA64 */
#define CPER_SEC_PROC_IPF \
UUID_LE(0xE429FAF1, 0x3CB7, 0x11D4, 0x0B, 0xCA, 0x07, 0x00, \
0x80, 0xC7, 0x3C, 0x88, 0x81)
/* Platform Memory */
#define CPER_SEC_PLATFORM_MEM \
UUID_LE(0xA5BC1114, 0x6F64, 0x4EDE, 0xB8, 0x63, 0x3E, 0x83, \
0xED, 0x7C, 0x83, 0xB1)
#define CPER_SEC_PCIE \
UUID_LE(0xD995E954, 0xBBC1, 0x430F, 0xAD, 0x91, 0xB4, 0x4D, \
0xCB, 0x3C, 0x6F, 0x35)
/* Firmware Error Record Reference */
#define CPER_SEC_FW_ERR_REC_REF \
UUID_LE(0x81212A96, 0x09ED, 0x4996, 0x94, 0x71, 0x8D, 0x72, \
0x9C, 0x8E, 0x69, 0xED)
/* PCI/PCI-X Bus */
#define CPER_SEC_PCI_X_BUS \
UUID_LE(0xC5753963, 0x3B84, 0x4095, 0xBF, 0x78, 0xED, 0xDA, \
0xD3, 0xF9, 0xC9, 0xDD)
/* PCI Component/Device */
#define CPER_SEC_PCI_DEV \
UUID_LE(0xEB5E4685, 0xCA66, 0x4769, 0xB6, 0xA2, 0x26, 0x06, \
0x8B, 0x00, 0x13, 0x26)
#define CPER_SEC_DMAR_GENERIC \
UUID_LE(0x5B51FEF7, 0xC79D, 0x4434, 0x8F, 0x1B, 0xAA, 0x62, \
0xDE, 0x3E, 0x2C, 0x64)
/* Intel VT for Directed I/O specific DMAr */
#define CPER_SEC_DMAR_VT \
UUID_LE(0x71761D37, 0x32B2, 0x45cd, 0xA7, 0xD0, 0xB0, 0xFE, \
0xDD, 0x93, 0xE8, 0xCF)
/* IOMMU specific DMAr */
#define CPER_SEC_DMAR_IOMMU \
UUID_LE(0x036F84E1, 0x7F37, 0x428c, 0xA7, 0x9E, 0x57, 0x5F, \
0xDF, 0xAA, 0x84, 0xEC)
#define CPER_PROC_VALID_TYPE 0x0001
#define CPER_PROC_VALID_ISA 0x0002
#define CPER_PROC_VALID_ERROR_TYPE 0x0004
#define CPER_PROC_VALID_OPERATION 0x0008
#define CPER_PROC_VALID_FLAGS 0x0010
#define CPER_PROC_VALID_LEVEL 0x0020
#define CPER_PROC_VALID_VERSION 0x0040
#define CPER_PROC_VALID_BRAND_INFO 0x0080
#define CPER_PROC_VALID_ID 0x0100
#define CPER_PROC_VALID_TARGET_ADDRESS 0x0200
#define CPER_PROC_VALID_REQUESTOR_ID 0x0400
#define CPER_PROC_VALID_RESPONDER_ID 0x0800
#define CPER_PROC_VALID_IP 0x1000
#define CPER_MEM_VALID_ERROR_STATUS 0x0001
#define CPER_MEM_VALID_PA 0x0002
#define CPER_MEM_VALID_PA_MASK 0x0004
#define CPER_MEM_VALID_NODE 0x0008
#define CPER_MEM_VALID_CARD 0x0010
#define CPER_MEM_VALID_MODULE 0x0020
#define CPER_MEM_VALID_BANK 0x0040
#define CPER_MEM_VALID_DEVICE 0x0080
#define CPER_MEM_VALID_ROW 0x0100
#define CPER_MEM_VALID_COLUMN 0x0200
#define CPER_MEM_VALID_BIT_POSITION 0x0400
#define CPER_MEM_VALID_REQUESTOR_ID 0x0800
#define CPER_MEM_VALID_RESPONDER_ID 0x1000
#define CPER_MEM_VALID_TARGET_ID 0x2000
#define CPER_MEM_VALID_ERROR_TYPE 0x4000
#define CPER_MEM_VALID_RANK_NUMBER 0x8000
#define CPER_MEM_VALID_CARD_HANDLE 0x10000
#define CPER_MEM_VALID_MODULE_HANDLE 0x20000
#define CPER_PCIE_VALID_PORT_TYPE 0x0001
#define CPER_PCIE_VALID_VERSION 0x0002
#define CPER_PCIE_VALID_COMMAND_STATUS 0x0004
#define CPER_PCIE_VALID_DEVICE_ID 0x0008
#define CPER_PCIE_VALID_SERIAL_NUMBER 0x0010
#define CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS 0x0020
#define CPER_PCIE_VALID_CAPABILITY 0x0040
#define CPER_PCIE_VALID_AER_INFO 0x0080
#define CPER_PCIE_SLOT_SHIFT 3
/*
* All tables and structs must be byte-packed to match CPER
* specification, since the tables are provided by the system BIOS
*/
#pragma pack(1)
struct cper_record_header {
char signature[CPER_SIG_SIZE]; /* must be CPER_SIG_RECORD */
__u16 revision; /* must be CPER_RECORD_REV */
__u32 signature_end; /* must be CPER_SIG_END */
__u16 section_count;
__u32 error_severity;
__u32 validation_bits;
__u32 record_length;
__u64 timestamp;
uuid_le platform_id;
uuid_le partition_id;
uuid_le creator_id;
uuid_le notification_type;
__u64 record_id;
__u32 flags;
__u64 persistence_information;
__u8 reserved[12]; /* must be zero */
};
struct cper_section_descriptor {
__u32 section_offset; /* Offset in bytes of the
* section body from the base
* of the record header */
__u32 section_length;
__u16 revision; /* must be CPER_RECORD_REV */
__u8 validation_bits;
__u8 reserved; /* must be zero */
__u32 flags;
uuid_le section_type;
uuid_le fru_id;
__u32 section_severity;
__u8 fru_text[20];
};
/* Generic Processor Error Section */
struct cper_sec_proc_generic {
__u64 validation_bits;
__u8 proc_type;
__u8 proc_isa;
__u8 proc_error_type;
__u8 operation;
__u8 flags;
__u8 level;
__u16 reserved;
__u64 cpu_version;
char cpu_brand[128];
__u64 proc_id;
__u64 target_addr;
__u64 requestor_id;
__u64 responder_id;
__u64 ip;
};
/* IA32/X64 Processor Error Section */
struct cper_sec_proc_ia {
__u64 validation_bits;
__u8 lapic_id;
__u8 cpuid[48];
};
/* IA32/X64 Processor Error Information Structure */
struct cper_ia_err_info {
uuid_le err_type;
__u64 validation_bits;
__u64 check_info;
__u64 target_id;
__u64 requestor_id;
__u64 responder_id;
__u64 ip;
};
/* IA32/X64 Processor Context Information Structure */
struct cper_ia_proc_ctx {
__u16 reg_ctx_type;
__u16 reg_arr_size;
__u32 msr_addr;
__u64 mm_reg_addr;
};
/* Old Memory Error Section UEFI 2.1, 2.2 */
struct cper_sec_mem_err_old {
__u64 validation_bits;
__u64 error_status;
__u64 physical_addr;
__u64 physical_addr_mask;
__u16 node;
__u16 card;
__u16 module;
__u16 bank;
__u16 device;
__u16 row;
__u16 column;
__u16 bit_pos;
__u64 requestor_id;
__u64 responder_id;
__u64 target_id;
__u8 error_type;
};
/* Memory Error Section UEFI >= 2.3 */
struct cper_sec_mem_err {
__u64 validation_bits;
__u64 error_status;
__u64 physical_addr;
__u64 physical_addr_mask;
__u16 node;
__u16 card;
__u16 module;
__u16 bank;
__u16 device;
__u16 row;
__u16 column;
__u16 bit_pos;
__u64 requestor_id;
__u64 responder_id;
__u64 target_id;
__u8 error_type;
__u8 reserved;
__u16 rank;
__u16 mem_array_handle; /* card handle in UEFI 2.4 */
__u16 mem_dev_handle; /* module handle in UEFI 2.4 */
};
struct cper_mem_err_compact {
__u64 validation_bits;
__u16 node;
__u16 card;
__u16 module;
__u16 bank;
__u16 device;
__u16 row;
__u16 column;
__u16 bit_pos;
__u64 requestor_id;
__u64 responder_id;
__u64 target_id;
__u16 rank;
__u16 mem_array_handle;
__u16 mem_dev_handle;
};
struct cper_sec_pcie {
__u64 validation_bits;
__u32 port_type;
struct {
__u8 minor;
__u8 major;
__u8 reserved[2];
} version;
__u16 command;
__u16 status;
__u32 reserved;
struct {
__u16 vendor_id;
__u16 device_id;
__u8 class_code[3];
__u8 function;
__u8 device;
__u16 segment;
__u8 bus;
__u8 secondary_bus;
__u16 slot;
__u8 reserved;
} device_id;
struct {
__u32 lower;
__u32 upper;
} serial_number;
struct {
__u16 secondary_status;
__u16 control;
} bridge;
__u8 capability[60];
__u8 aer_info[96];
};
/* Reset to default packing */
#pragma pack()
u64 cper_next_record_id(void);
const char *cper_severity_str(unsigned int);
const char *cper_mem_err_type_str(unsigned int);
void cper_print_bits(const char *prefix, unsigned int bits,
const char * const strs[], unsigned int strs_size);
void cper_mem_err_pack(const struct cper_sec_mem_err *,
struct cper_mem_err_compact *);
const char *cper_mem_err_unpack(struct trace_seq *,
struct cper_mem_err_compact *);
#endif
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