83abeffbd5
Various functions in entry.S perform test-under-mask instructions to test for particular bits in memory. Because test-under-mask uses a mask value of one byte, the mask value and the offset into the memory must be calculated manually. This easily introduces errors and is hard to review and read. Introduce the TSTMSK assembler macro to specify a mask constant and let the macro calculate the offset and the byte mask to generate a test-under-mask instruction. The benefit is that existing symbolic constants can now be used for tests. Also the macro checks for zero mask values and mask values that consist of multiple bytes. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
/*
|
|
* Machine check handler definitions
|
|
*
|
|
* Copyright IBM Corp. 2000, 2009
|
|
* Author(s): Ingo Adlung <adlung@de.ibm.com>,
|
|
* Martin Schwidefsky <schwidefsky@de.ibm.com>,
|
|
* Cornelia Huck <cornelia.huck@de.ibm.com>,
|
|
* Heiko Carstens <heiko.carstens@de.ibm.com>,
|
|
*/
|
|
|
|
#ifndef _ASM_S390_NMI_H
|
|
#define _ASM_S390_NMI_H
|
|
|
|
#include <linux/const.h>
|
|
#include <linux/types.h>
|
|
|
|
#define MCCK_CODE_SYSTEM_DAMAGE _BITUL(63)
|
|
#define MCCK_CODE_CPU_TIMER_VALID _BITUL(63 - 46)
|
|
#define MCCK_CODE_PSW_MWP_VALID _BITUL(63 - 20)
|
|
#define MCCK_CODE_PSW_IA_VALID _BITUL(63 - 23)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct mci {
|
|
__u32 sd : 1; /* 00 system damage */
|
|
__u32 pd : 1; /* 01 instruction-processing damage */
|
|
__u32 sr : 1; /* 02 system recovery */
|
|
__u32 : 1; /* 03 */
|
|
__u32 cd : 1; /* 04 timing-facility damage */
|
|
__u32 ed : 1; /* 05 external damage */
|
|
__u32 : 1; /* 06 */
|
|
__u32 dg : 1; /* 07 degradation */
|
|
__u32 w : 1; /* 08 warning pending */
|
|
__u32 cp : 1; /* 09 channel-report pending */
|
|
__u32 sp : 1; /* 10 service-processor damage */
|
|
__u32 ck : 1; /* 11 channel-subsystem damage */
|
|
__u32 : 2; /* 12-13 */
|
|
__u32 b : 1; /* 14 backed up */
|
|
__u32 : 1; /* 15 */
|
|
__u32 se : 1; /* 16 storage error uncorrected */
|
|
__u32 sc : 1; /* 17 storage error corrected */
|
|
__u32 ke : 1; /* 18 storage-key error uncorrected */
|
|
__u32 ds : 1; /* 19 storage degradation */
|
|
__u32 wp : 1; /* 20 psw mwp validity */
|
|
__u32 ms : 1; /* 21 psw mask and key validity */
|
|
__u32 pm : 1; /* 22 psw program mask and cc validity */
|
|
__u32 ia : 1; /* 23 psw instruction address validity */
|
|
__u32 fa : 1; /* 24 failing storage address validity */
|
|
__u32 vr : 1; /* 25 vector register validity */
|
|
__u32 ec : 1; /* 26 external damage code validity */
|
|
__u32 fp : 1; /* 27 floating point register validity */
|
|
__u32 gr : 1; /* 28 general register validity */
|
|
__u32 cr : 1; /* 29 control register validity */
|
|
__u32 : 1; /* 30 */
|
|
__u32 st : 1; /* 31 storage logical validity */
|
|
__u32 ie : 1; /* 32 indirect storage error */
|
|
__u32 ar : 1; /* 33 access register validity */
|
|
__u32 da : 1; /* 34 delayed access exception */
|
|
__u32 : 7; /* 35-41 */
|
|
__u32 pr : 1; /* 42 tod programmable register validity */
|
|
__u32 fc : 1; /* 43 fp control register validity */
|
|
__u32 ap : 1; /* 44 ancillary report */
|
|
__u32 : 1; /* 45 */
|
|
__u32 ct : 1; /* 46 cpu timer validity */
|
|
__u32 cc : 1; /* 47 clock comparator validity */
|
|
__u32 : 16; /* 47-63 */
|
|
};
|
|
|
|
struct pt_regs;
|
|
|
|
extern void s390_handle_mcck(void);
|
|
extern void s390_do_machine_check(struct pt_regs *regs);
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* _ASM_S390_NMI_H */
|