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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3c1fcfe229
Use the new diagnose 0x9c in the spinlock implementation for s390. It yields the remaining timeslice of the virtual cpu that tries to acquire a lock to the virtual cpu that is the current holder of the lock. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
161 lines
3.8 KiB
C
161 lines
3.8 KiB
C
/*
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* include/asm-s390/setup.h
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*
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* S390 version
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* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
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*/
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#ifndef _ASM_S390_SETUP_H
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#define _ASM_S390_SETUP_H
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#ifdef __KERNEL__
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#include <asm/types.h>
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#define PARMAREA 0x10400
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#define COMMAND_LINE_SIZE 896
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#define MEMORY_CHUNKS 16 /* max 0x7fff */
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#define IPL_PARMBLOCK_ORIGIN 0x2000
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#ifndef __ASSEMBLY__
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#ifndef __s390x__
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#define IPL_DEVICE (*(unsigned long *) (0x10404))
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#define INITRD_START (*(unsigned long *) (0x1040C))
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#define INITRD_SIZE (*(unsigned long *) (0x10414))
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#else /* __s390x__ */
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#define IPL_DEVICE (*(unsigned long *) (0x10400))
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#define INITRD_START (*(unsigned long *) (0x10408))
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#define INITRD_SIZE (*(unsigned long *) (0x10410))
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#endif /* __s390x__ */
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#define COMMAND_LINE ((char *) (0x10480))
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/*
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* Machine features detected in head.S
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*/
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extern unsigned long machine_flags;
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#define MACHINE_IS_VM (machine_flags & 1)
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#define MACHINE_IS_P390 (machine_flags & 4)
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#define MACHINE_HAS_MVPG (machine_flags & 16)
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#define MACHINE_HAS_IDTE (machine_flags & 128)
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#define MACHINE_HAS_DIAG9C (machine_flags & 256)
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#ifndef __s390x__
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#define MACHINE_HAS_IEEE (machine_flags & 2)
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#define MACHINE_HAS_CSP (machine_flags & 8)
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#define MACHINE_HAS_DIAG44 (1)
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#define MACHINE_HAS_MVCOS (0)
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#else /* __s390x__ */
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#define MACHINE_HAS_IEEE (1)
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#define MACHINE_HAS_CSP (1)
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#define MACHINE_HAS_DIAG44 (machine_flags & 32)
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#define MACHINE_HAS_MVCOS (machine_flags & 512)
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#endif /* __s390x__ */
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#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
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/*
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* Console mode. Override with conmode=
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*/
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extern unsigned int console_mode;
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extern unsigned int console_devno;
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extern unsigned int console_irq;
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#define CONSOLE_IS_UNDEFINED (console_mode == 0)
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#define CONSOLE_IS_SCLP (console_mode == 1)
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#define CONSOLE_IS_3215 (console_mode == 2)
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#define CONSOLE_IS_3270 (console_mode == 3)
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#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
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#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
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#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
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struct ipl_list_hdr {
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u32 len;
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u8 reserved1[3];
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u8 version;
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u32 blk0_len;
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u8 pbt;
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u8 flags;
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u16 reserved2;
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} __attribute__((packed));
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struct ipl_block_fcp {
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u8 reserved1[313-1];
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u8 opt;
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u8 reserved2[3];
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u16 reserved3;
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u16 devno;
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u8 reserved4[4];
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u64 wwpn;
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u64 lun;
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u32 bootprog;
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u8 reserved5[12];
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u64 br_lba;
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u32 scp_data_len;
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u8 reserved6[260];
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u8 scp_data[];
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} __attribute__((packed));
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struct ipl_block_ccw {
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u8 load_param[8];
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u8 reserved1[84];
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u8 reserved2[2];
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u16 devno;
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u8 vm_flags;
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u8 reserved3[3];
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u32 vm_parm_len;
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} __attribute__((packed));
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struct ipl_parameter_block {
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struct ipl_list_hdr hdr;
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union {
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struct ipl_block_fcp fcp;
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struct ipl_block_ccw ccw;
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} ipl_info;
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} __attribute__((packed));
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#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
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sizeof(struct ipl_block_fcp))
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#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
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sizeof(struct ipl_block_ccw))
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#define IPL_MAX_SUPPORTED_VERSION (0)
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/*
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* IPL validity flags and parameters as detected in head.S
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*/
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extern u32 ipl_flags;
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extern u16 ipl_devno;
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void do_reipl(void);
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enum {
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IPL_DEVNO_VALID = 1,
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IPL_PARMBLOCK_VALID = 2,
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};
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#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
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IPL_PARMBLOCK_ORIGIN)
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#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
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#else /* __ASSEMBLY__ */
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#ifndef __s390x__
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#define IPL_DEVICE 0x10404
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#define INITRD_START 0x1040C
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#define INITRD_SIZE 0x10414
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#else /* __s390x__ */
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#define IPL_DEVICE 0x10400
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#define INITRD_START 0x10408
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#define INITRD_SIZE 0x10410
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#endif /* __s390x__ */
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#define COMMAND_LINE 0x10480
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* _ASM_S390_SETUP_H */
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