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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1b948d6cae
The zEC12 machines introduced the local-clearing control for the IDTE and IPTE instruction. If the control is set only the TLB of the local CPU is cleared of entries, either all entries of a single address space for IDTE, or the entry for a single page-table entry for IPTE. Without the local-clearing control the TLB flush is broadcasted to all CPUs in the configuration, which is expensive. The reset of the bit mask of the CPUs that need flushing after a non-local IDTE is tricky. As TLB entries for an address space remain in the TLB even if the address space is detached a new bit field is required to keep track of attached CPUs vs. CPUs in the need of a flush. After a non-local flush with IDTE the bit-field of attached CPUs is copied to the bit-field of CPUs in need of a flush. The ordering of operations on cpu_attach_mask, attach_count and mm_cpumask(mm) is such that an underindication in mm_cpumask(mm) is prevented but an overindication in mm_cpumask(mm) is possible. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
164 lines
5.2 KiB
C
164 lines
5.2 KiB
C
/*
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* S390 version
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* Copyright IBM Corp. 1999, 2010
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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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#include <uapi/asm/setup.h>
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#define PARMAREA 0x10400
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#define MEMORY_CHUNKS 256
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#ifndef __ASSEMBLY__
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#include <asm/lowcore.h>
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#include <asm/types.h>
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#ifndef CONFIG_64BIT
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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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#define OLDMEM_BASE (*(unsigned long *) (0x1041C))
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#define OLDMEM_SIZE (*(unsigned long *) (0x10424))
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#else /* CONFIG_64BIT */
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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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#define OLDMEM_BASE (*(unsigned long *) (0x10418))
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#define OLDMEM_SIZE (*(unsigned long *) (0x10420))
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#endif /* CONFIG_64BIT */
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#define COMMAND_LINE ((char *) (0x10480))
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#define CHUNK_READ_WRITE 0
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#define CHUNK_READ_ONLY 1
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struct mem_chunk {
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unsigned long addr;
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unsigned long size;
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int type;
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};
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extern struct mem_chunk memory_chunk[];
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extern int memory_end_set;
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extern unsigned long memory_end;
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void detect_memory_layout(struct mem_chunk chunk[], unsigned long maxsize);
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void create_mem_hole(struct mem_chunk mem_chunk[], unsigned long addr,
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unsigned long size);
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/*
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* Machine features detected in head.S
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*/
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#define MACHINE_FLAG_VM (1UL << 0)
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#define MACHINE_FLAG_IEEE (1UL << 1)
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#define MACHINE_FLAG_CSP (1UL << 2)
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#define MACHINE_FLAG_MVPG (1UL << 3)
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#define MACHINE_FLAG_DIAG44 (1UL << 4)
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#define MACHINE_FLAG_IDTE (1UL << 5)
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#define MACHINE_FLAG_DIAG9C (1UL << 6)
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#define MACHINE_FLAG_KVM (1UL << 8)
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#define MACHINE_FLAG_ESOP (1UL << 9)
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#define MACHINE_FLAG_EDAT1 (1UL << 10)
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#define MACHINE_FLAG_EDAT2 (1UL << 11)
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#define MACHINE_FLAG_LPAR (1UL << 12)
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#define MACHINE_FLAG_LPP (1UL << 13)
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#define MACHINE_FLAG_TOPOLOGY (1UL << 14)
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#define MACHINE_FLAG_TE (1UL << 15)
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#define MACHINE_FLAG_RRBM (1UL << 16)
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#define MACHINE_FLAG_TLB_LC (1UL << 17)
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#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
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#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
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#define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
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#define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
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#define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
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#define MACHINE_HAS_PFMF MACHINE_HAS_EDAT1
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#define MACHINE_HAS_HPAGE MACHINE_HAS_EDAT1
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#ifndef CONFIG_64BIT
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#define MACHINE_HAS_IEEE (S390_lowcore.machine_flags & MACHINE_FLAG_IEEE)
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#define MACHINE_HAS_CSP (S390_lowcore.machine_flags & MACHINE_FLAG_CSP)
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#define MACHINE_HAS_IDTE (0)
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#define MACHINE_HAS_DIAG44 (1)
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#define MACHINE_HAS_MVPG (S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
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#define MACHINE_HAS_EDAT1 (0)
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#define MACHINE_HAS_EDAT2 (0)
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#define MACHINE_HAS_LPP (0)
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#define MACHINE_HAS_TOPOLOGY (0)
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#define MACHINE_HAS_TE (0)
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#define MACHINE_HAS_RRBM (0)
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#define MACHINE_HAS_TLB_LC (0)
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#else /* CONFIG_64BIT */
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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_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
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#define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
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#define MACHINE_HAS_MVPG (1)
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#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
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#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
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#define MACHINE_HAS_LPP (S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
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#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
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#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
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#define MACHINE_HAS_RRBM (S390_lowcore.machine_flags & MACHINE_FLAG_RRBM)
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#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
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#endif /* CONFIG_64BIT */
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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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extern char vmhalt_cmd[];
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extern char vmpoff_cmd[];
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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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#define NSS_NAME_SIZE 8
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extern char kernel_nss_name[];
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#ifdef CONFIG_PFAULT
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extern int pfault_init(void);
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extern void pfault_fini(void);
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#else /* CONFIG_PFAULT */
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#define pfault_init() ({-1;})
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#define pfault_fini() do { } while (0)
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#endif /* CONFIG_PFAULT */
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extern void cmma_init(void);
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extern void (*_machine_restart)(char *command);
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extern void (*_machine_halt)(void);
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extern void (*_machine_power_off)(void);
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#else /* __ASSEMBLY__ */
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#ifndef CONFIG_64BIT
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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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#define OLDMEM_BASE 0x1041C
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#define OLDMEM_SIZE 0x10424
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#else /* CONFIG_64BIT */
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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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#define OLDMEM_BASE 0x10418
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#define OLDMEM_SIZE 0x10420
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#endif /* CONFIG_64BIT */
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#define COMMAND_LINE 0x10480
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_S390_SETUP_H */
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