diff options
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/atomic.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/barrier.h | 35 | ||||
| -rw-r--r-- | arch/s390/include/asm/cpu_mf.h | 97 | ||||
| -rw-r--r-- | arch/s390/include/asm/ctl_reg.h | 76 | ||||
| -rw-r--r-- | arch/s390/include/asm/elf.h | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/exec.h | 12 | ||||
| -rw-r--r-- | arch/s390/include/asm/facility.h | 63 | ||||
| -rw-r--r-- | arch/s390/include/asm/irq.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/kvm.h | 11 | ||||
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 12 | ||||
| -rw-r--r-- | arch/s390/include/asm/mmu.h | 16 | ||||
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/perf_event.h | 12 | ||||
| -rw-r--r-- | arch/s390/include/asm/posix_types.h | 70 | ||||
| -rw-r--r-- | arch/s390/include/asm/processor.h | 24 | ||||
| -rw-r--r-- | arch/s390/include/asm/setup.h | 14 | ||||
| -rw-r--r-- | arch/s390/include/asm/smp.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/switch_to.h | 100 | ||||
| -rw-r--r-- | arch/s390/include/asm/system.h | 315 | ||||
| -rw-r--r-- | arch/s390/include/asm/uaccess.h | 6 |
20 files changed, 486 insertions, 385 deletions
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h index 8517d2ae3b5..748347baecb 100644 --- a/arch/s390/include/asm/atomic.h +++ b/arch/s390/include/asm/atomic.h @@ -15,7 +15,7 @@ #include <linux/compiler.h> #include <linux/types.h> -#include <asm/system.h> +#include <asm/cmpxchg.h> #define ATOMIC_INIT(i) { (i) } diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h new file mode 100644 index 00000000000..451273ad4d3 --- /dev/null +++ b/arch/s390/include/asm/barrier.h @@ -0,0 +1,35 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_BARRIER_H +#define __ASM_BARRIER_H + +/* + * Force strict CPU ordering. + * And yes, this is required on UP too when we're talking + * to devices. + * + * This is very similar to the ppc eieio/sync instruction in that is + * does a checkpoint syncronisation & makes sure that + * all memory ops have completed wrt other CPU's ( see 7-15 POP DJB ). + */ + +#define eieio() asm volatile("bcr 15,0" : : : "memory") +#define SYNC_OTHER_CORES(x) eieio() +#define mb() eieio() +#define rmb() eieio() +#define wmb() eieio() +#define read_barrier_depends() do { } while(0) +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() +#define smp_read_barrier_depends() read_barrier_depends() +#define smp_mb__before_clear_bit() smp_mb() +#define smp_mb__after_clear_bit() smp_mb() + +#define set_mb(var, value) do { var = value; mb(); } while (0) + +#endif /* __ASM_BARRIER_H */ diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h new file mode 100644 index 00000000000..a3afecdae14 --- /dev/null +++ b/arch/s390/include/asm/cpu_mf.h @@ -0,0 +1,97 @@ +/* + * CPU-measurement facilities + * + * Copyright IBM Corp. 2012 + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + * Jan Glauber <jang@linux.vnet.ibm.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 only) + * as published by the Free Software Foundation. + */ +#ifndef _ASM_S390_CPU_MF_H +#define _ASM_S390_CPU_MF_H + +#include <asm/facility.h> + +#define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ +#define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ +#define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ +#define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ +#define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ +#define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ +#define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ + +#define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) +#define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ + CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ + CPU_MF_INT_SF_LSDA) + +/* CPU measurement facility support */ +static inline int cpum_cf_avail(void) +{ + return MACHINE_HAS_SPP && test_facility(67); +} + +static inline int cpum_sf_avail(void) +{ + return MACHINE_HAS_SPP && test_facility(68); +} + + +struct cpumf_ctr_info { + u16 cfvn; + u16 auth_ctl; + u16 enable_ctl; + u16 act_ctl; + u16 max_cpu; + u16 csvn; + u16 max_cg; + u16 reserved1; + u32 reserved2[12]; +} __packed; + +/* Query counter information */ +static inline int qctri(struct cpumf_ctr_info *info) +{ + int rc = -EINVAL; + + asm volatile ( + "0: .insn s,0xb28e0000,%1\n" + "1: lhi %0,0\n" + "2:\n" + EX_TABLE(1b, 2b) + : "+d" (rc), "=Q" (*info)); + return rc; +} + +/* Load CPU-counter-set controls */ +static inline int lcctl(u64 ctl) +{ + int cc; + + asm volatile ( + " .insn s,0xb2840000,%1\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (cc) : "m" (ctl) : "cc"); + return cc; +} + +/* Extract CPU counter */ +static inline int ecctr(u64 ctr, u64 *val) +{ + register u64 content asm("4") = 0; + int cc; + + asm volatile ( + " .insn rre,0xb2e40000,%0,%2\n" + " ipm %1\n" + " srl %1,28\n" + : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); + if (!cc) + *val = content; + return cc; +} + +#endif /* _ASM_S390_CPU_MF_H */ diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h new file mode 100644 index 00000000000..ecde9417d66 --- /dev/null +++ b/arch/s390/include/asm/ctl_reg.h @@ -0,0 +1,76 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_CTL_REG_H +#define __ASM_CTL_REG_H + +#ifdef __s390x__ + +#define __ctl_load(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " lctlg %1,%2,%0\n" \ + : : "Q" (*(addrtype *)(&array)), \ + "i" (low), "i" (high)); \ + }) + +#define __ctl_store(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " stctg %1,%2,%0\n" \ + : "=Q" (*(addrtype *)(&array)) \ + : "i" (low), "i" (high)); \ + }) + +#else /* __s390x__ */ + +#define __ctl_load(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " lctl %1,%2,%0\n" \ + : : "Q" (*(addrtype *)(&array)), \ + "i" (low), "i" (high)); \ +}) + +#define __ctl_store(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " stctl %1,%2,%0\n" \ + : "=Q" (*(addrtype *)(&array)) \ + : "i" (low), "i" (high)); \ + }) + +#endif /* __s390x__ */ + +#define __ctl_set_bit(cr, bit) ({ \ + unsigned long __dummy; \ + __ctl_store(__dummy, cr, cr); \ + __dummy |= 1UL << (bit); \ + __ctl_load(__dummy, cr, cr); \ +}) + +#define __ctl_clear_bit(cr, bit) ({ \ + unsigned long __dummy; \ + __ctl_store(__dummy, cr, cr); \ + __dummy &= ~(1UL << (bit)); \ + __ctl_load(__dummy, cr, cr); \ +}) + +#ifdef CONFIG_SMP + +extern void smp_ctl_set_bit(int cr, int bit); +extern void smp_ctl_clear_bit(int cr, int bit); +#define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit) +#define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit) + +#else + +#define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit) +#define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit) + +#endif /* CONFIG_SMP */ + +#endif /* __ASM_CTL_REG_H */ diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index 547f1a6a35d..c4ee39f7a4d 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -129,7 +129,6 @@ typedef s390_fp_regs compat_elf_fpregset_t; typedef s390_compat_regs compat_elf_gregset_t; #include <linux/sched.h> /* for task_struct */ -#include <asm/system.h> /* for save_access_regs */ #include <asm/mmu_context.h> #include <asm/vdso.h> diff --git a/arch/s390/include/asm/exec.h b/arch/s390/include/asm/exec.h new file mode 100644 index 00000000000..c4a93d6327f --- /dev/null +++ b/arch/s390/include/asm/exec.h @@ -0,0 +1,12 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_EXEC_H +#define __ASM_EXEC_H + +extern unsigned long arch_align_stack(unsigned long sp); + +#endif /* __ASM_EXEC_H */ diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h new file mode 100644 index 00000000000..1e5b27edc0c --- /dev/null +++ b/arch/s390/include/asm/facility.h @@ -0,0 +1,63 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_FACILITY_H +#define __ASM_FACILITY_H + +#include <linux/string.h> +#include <linux/preempt.h> +#include <asm/lowcore.h> + +#define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */ + +/* + * The test_facility function uses the bit odering where the MSB is bit 0. + * That makes it easier to query facility bits with the bit number as + * documented in the Principles of Operation. + */ +static inline int test_facility(unsigned long nr) +{ + unsigned char *ptr; + + if (nr >= MAX_FACILITY_BIT) + return 0; + ptr = (unsigned char *) &S390_lowcore.stfle_fac_list + (nr >> 3); + return (*ptr & (0x80 >> (nr & 7))) != 0; +} + +/** + * stfle - Store facility list extended + * @stfle_fac_list: array where facility list can be stored + * @size: size of passed in array in double words + */ +static inline void stfle(u64 *stfle_fac_list, int size) +{ + unsigned long nr; + + preempt_disable(); + S390_lowcore.stfl_fac_list = 0; + asm volatile( + " .insn s,0xb2b10000,0(0)\n" /* stfl */ + "0:\n" + EX_TABLE(0b, 0b) + : "=m" (S390_lowcore.stfl_fac_list)); + nr = 4; /* bytes stored by stfl */ + memcpy(stfle_fac_list, &S390_lowcore.stfl_fac_list, 4); + if (S390_lowcore.stfl_fac_list & 0x01000000) { + /* More facility bits available with stfle */ + register unsigned long reg0 asm("0") = size - 1; + + asm volatile(".insn s,0xb2b00000,0(%1)" /* stfle */ + : "+d" (reg0) + : "a" (stfle_fac_list) + : "memory", "cc"); + nr = (reg0 + 1) * 8; /* # bytes stored by stfle */ + } + memset((char *) stfle_fac_list + nr, 0, size * 8 - nr); + preempt_enable(); +} + +#endif /* __ASM_FACILITY_H */ diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index acee1806f61..5289cacd486 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -45,5 +45,7 @@ int register_external_interrupt(u16 code, ext_int_handler_t handler); int unregister_external_interrupt(u16 code, ext_int_handler_t handler); void service_subclass_irq_register(void); void service_subclass_irq_unregister(void); +void measurement_alert_subclass_register(void); +void measurement_alert_subclass_unregister(void); #endif /* _ASM_IRQ_H */ diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h index 82b32a100c7..96076676e22 100644 --- a/arch/s390/include/asm/kvm.h +++ b/arch/s390/include/asm/kvm.h @@ -41,4 +41,15 @@ struct kvm_debug_exit_arch { struct kvm_guest_debug_arch { }; +#define KVM_SYNC_PREFIX (1UL << 0) +#define KVM_SYNC_GPRS (1UL << 1) +#define KVM_SYNC_ACRS (1UL << 2) +#define KVM_SYNC_CRS (1UL << 3) +/* definition of registers in kvm_run */ +struct kvm_sync_regs { + __u64 prefix; /* prefix register */ + __u64 gprs[16]; /* general purpose registers */ + __u32 acrs[16]; /* access registers */ + __u64 crs[16]; /* control registers */ +}; #endif diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index b0c235cb6ad..7343872890a 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -220,18 +220,17 @@ struct kvm_s390_float_interrupt { struct list_head list; atomic_t active; int next_rr_cpu; - unsigned long idle_mask [(64 + sizeof(long) - 1) / sizeof(long)]; - struct kvm_s390_local_interrupt *local_int[64]; + unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1) + / sizeof(long)]; + struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS]; }; struct kvm_vcpu_arch { struct kvm_s390_sie_block *sie_block; - unsigned long guest_gprs[16]; s390_fp_regs host_fpregs; unsigned int host_acrs[NUM_ACRS]; s390_fp_regs guest_fpregs; - unsigned int guest_acrs[NUM_ACRS]; struct kvm_s390_local_interrupt local_int; struct hrtimer ckc_timer; struct tasklet_struct tasklet; @@ -246,6 +245,9 @@ struct kvm_vm_stat { u32 remote_tlb_flush; }; +struct kvm_arch_memory_slot { +}; + struct kvm_arch{ struct sca_block *sca; debug_info_t *dbf; @@ -253,5 +255,5 @@ struct kvm_arch{ struct gmap *gmap; }; -extern int sie64a(struct kvm_s390_sie_block *, unsigned long *); +extern int sie64a(struct kvm_s390_sie_block *, u64 *); #endif diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index 4506791adcd..6340178748b 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -1,6 +1,8 @@ #ifndef __MMU_H #define __MMU_H +#include <linux/errno.h> + typedef struct { atomic_t attach_count; unsigned int flush_mm; @@ -21,4 +23,18 @@ typedef struct { .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \ .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list), +static inline int tprot(unsigned long addr) +{ + int rc = -EFAULT; + + asm volatile( + " tprot 0(%1),0\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) : "a" (addr) : "cc"); + return rc; +} + #endif diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index 5682f160ff8..5d09e405c54 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -12,6 +12,7 @@ #include <asm/pgalloc.h> #include <asm/uaccess.h> #include <asm/tlbflush.h> +#include <asm/ctl_reg.h> #include <asm-generic/mm_hooks.h> static inline int init_new_context(struct task_struct *tsk, diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h index 4eb444edbe4..7941968e12b 100644 --- a/arch/s390/include/asm/perf_event.h +++ b/arch/s390/include/asm/perf_event.h @@ -1,8 +1,16 @@ /* * Performance event support - s390 specific definitions. * - * Copyright 2009 Martin Schwidefsky, IBM Corporation. + * Copyright IBM Corp. 2009, 2012 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ -/* Empty, just to avoid compiling error */ +#include <asm/cpu_mf.h> +/* CPU-measurement counter facility */ +#define PERF_CPUM_CF_MAX_CTR 160 + +/* Per-CPU flags for PMU states */ +#define PMU_F_RESERVED 0x1000 +#define PMU_F_ENABLED 0x2000 diff --git a/arch/s390/include/asm/posix_types.h b/arch/s390/include/asm/posix_types.h index 8cc113f9252..edf8527ff08 100644 --- a/arch/s390/include/asm/posix_types.h +++ b/arch/s390/include/asm/posix_types.h @@ -3,7 +3,6 @@ * * S390 version * - * Derived from "include/asm-i386/posix_types.h" */ #ifndef __ARCH_S390_POSIX_TYPES_H @@ -15,22 +14,11 @@ * assume GCC is being used. */ -typedef long __kernel_off_t; -typedef int __kernel_pid_t; typedef unsigned long __kernel_size_t; -typedef long __kernel_time_t; -typedef long __kernel_suseconds_t; -typedef long __kernel_clock_t; -typedef int __kernel_timer_t; -typedef int __kernel_clockid_t; -typedef int __kernel_daddr_t; -typedef char * __kernel_caddr_t; -typedef unsigned short __kernel_uid16_t; -typedef unsigned short __kernel_gid16_t; +#define __kernel_size_t __kernel_size_t -#ifdef __GNUC__ -typedef long long __kernel_loff_t; -#endif +typedef unsigned short __kernel_old_dev_t; +#define __kernel_old_dev_t __kernel_old_dev_t #ifndef __s390x__ @@ -42,11 +30,6 @@ typedef unsigned short __kernel_uid_t; typedef unsigned short __kernel_gid_t; typedef int __kernel_ssize_t; typedef int __kernel_ptrdiff_t; -typedef unsigned int __kernel_uid32_t; -typedef unsigned int __kernel_gid32_t; -typedef unsigned short __kernel_old_uid_t; -typedef unsigned short __kernel_old_gid_t; -typedef unsigned short __kernel_old_dev_t; #else /* __s390x__ */ @@ -59,49 +42,16 @@ typedef unsigned int __kernel_gid_t; typedef long __kernel_ssize_t; typedef long __kernel_ptrdiff_t; typedef unsigned long __kernel_sigset_t; /* at least 32 bits */ -typedef __kernel_uid_t __kernel_old_uid_t; -typedef __kernel_gid_t __kernel_old_gid_t; -typedef __kernel_uid_t __kernel_uid32_t; -typedef __kernel_gid_t __kernel_gid32_t; -typedef unsigned short __kernel_old_dev_t; #endif /* __s390x__ */ -typedef struct { - int val[2]; -} __kernel_fsid_t; - - -#ifdef __KERNEL__ - -#undef __FD_SET -static inline void __FD_SET(unsigned long fd, __kernel_fd_set *fdsetp) -{ - unsigned long _tmp = fd / __NFDBITS; - unsigned long _rem = fd % __NFDBITS; - fdsetp->fds_bits[_tmp] |= (1UL<<_rem); -} - -#undef __FD_CLR -static inline void __FD_CLR(unsigned long fd, __kernel_fd_set *fdsetp) -{ - unsigned long _tmp = fd / __NFDBITS; - unsigned long _rem = fd % __NFDBITS; - fdsetp->fds_bits[_tmp] &= ~(1UL<<_rem); -} - -#undef __FD_ISSET -static inline int __FD_ISSET(unsigned long fd, const __kernel_fd_set *fdsetp) -{ - unsigned long _tmp = fd / __NFDBITS; - unsigned long _rem = fd % __NFDBITS; - return (fdsetp->fds_bits[_tmp] & (1UL<<_rem)) != 0; -} - -#undef __FD_ZERO -#define __FD_ZERO(fdsetp) \ - ((void) memset ((void *) (fdsetp), 0, sizeof (__kernel_fd_set))) +#define __kernel_ino_t __kernel_ino_t +#define __kernel_mode_t __kernel_mode_t +#define __kernel_nlink_t __kernel_nlink_t +#define __kernel_ipc_pid_t __kernel_ipc_pid_t +#define __kernel_uid_t __kernel_uid_t +#define __kernel_gid_t __kernel_gid_t -#endif /* __KERNEL__ */ +#include <asm-generic/posix_types.h> #endif diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index d25843a6a91..d499b30ea48 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -14,6 +14,7 @@ #define __ASM_S390_PROCESSOR_H #include <linux/linkage.h> +#include <linux/irqflags.h> #include <asm/cpu.h> #include <asm/page.h> #include <asm/ptrace.h> @@ -156,6 +157,14 @@ unsigned long get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr) #define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15]) +static inline unsigned short stap(void) +{ + unsigned short cpu_address; + + asm volatile("stap %0" : "=m" (cpu_address)); + return cpu_address; +} + /* * Give up the time slice of the virtual PU. */ @@ -304,6 +313,21 @@ static inline void __noreturn disabled_wait(unsigned long code) } /* + * Use to set psw mask except for the first byte which + * won't be changed by this function. + */ +static inline void +__set_psw_mask(unsigned long mask) +{ + __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8))); +} + +#define local_mcck_enable() \ + __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK) +#define local_mcck_disable() \ + __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT) + +/* * Basic Machine Check/Program Check Handler. */ diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index 097183c7040..b21e46e5d4b 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -140,6 +140,20 @@ extern char vmpoff_cmd[]; #define NSS_NAME_SIZE 8 extern char kernel_nss_name[]; +#ifdef CONFIG_PFAULT +extern int pfault_init(void); +extern void pfault_fini(void); +#else /* CONFIG_PFAULT */ +#define pfault_init() ({-1;}) +#define pfault_fini() do { } while (0) +#endif /* CONFIG_PFAULT */ + +extern void cmma_init(void); + +extern void (*_machine_restart)(char *command); +extern void (*_machine_halt)(void); +extern void (*_machine_power_off)(void); + #else /* __ASSEMBLY__ */ #ifndef __s390x__ diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index 797f7872968..c77c6de6f6c 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -9,7 +9,7 @@ #ifdef CONFIG_SMP -#include <asm/system.h> +#include <asm/lowcore.h> #define raw_smp_processor_id() (S390_lowcore.cpu_nr) diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h new file mode 100644 index 00000000000..f223068b782 --- /dev/null +++ b/arch/s390/include/asm/switch_to.h @@ -0,0 +1,100 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_SWITCH_TO_H +#define __ASM_SWITCH_TO_H + +#include <linux/thread_info.h> + +extern struct task_struct *__switch_to(void *, void *); +extern void update_per_regs(struct task_struct *task); + +static inline void save_fp_regs(s390_fp_regs *fpregs) +{ + asm volatile( + " std 0,%O0+8(%R0)\n" + " std 2,%O0+24(%R0)\n" + " std 4,%O0+40(%R0)\n" + " std 6,%O0+56(%R0)" + : "=Q" (*fpregs) : "Q" (*fpregs)); + if (!MACHINE_HAS_IEEE) + return; + asm volatile( + " stfpc %0\n" + " std 1,%O0+16(%R0)\n" + " std 3,%O0+32(%R0)\n" + " std 5,%O0+48(%R0)\n" + " std 7,%O0+64(%R0)\n" + " std 8,%O0+72(%R0)\n" + " std 9,%O0+80(%R0)\n" + " std 10,%O0+88(%R0)\n" + " std 11,%O0+96(%R0)\n" + " std 12,%O0+104(%R0)\n" + " std 13,%O0+112(%R0)\n" + " std 14,%O0+120(%R0)\n" + " std 15,%O0+128(%R0)\n" + : "=Q" (*fpregs) : "Q" (*fpregs)); +} + +static inline void restore_fp_regs(s390_fp_regs *fpregs) +{ + asm volatile( + " ld 0,%O0+8(%R0)\n" + " ld 2,%O0+24(%R0)\n" + " ld 4,%O0+40(%R0)\n" + " ld 6,%O0+56(%R0)" + : : "Q" (*fpregs)); + if (!MACHINE_HAS_IEEE) + return; + asm volatile( + " lfpc %0\n" + " ld 1,%O0+16(%R0)\n" + " ld 3,%O0+32(%R0)\n" + " ld 5,%O0+48(%R0)\n" + " ld 7,%O0+64(%R0)\n" + " ld 8,%O0+72(%R0)\n" + " ld 9,%O0+80(%R0)\n" + " ld 10,%O0+88(%R0)\n" + " ld 11,%O0+96(%R0)\n" + " ld 12,%O0+104(%R0)\n" + " ld 13,%O0+112(%R0)\n" + " ld 14,%O0+120(%R0)\n" + " ld 15,%O0+128(%R0)\n" + : : "Q" (*fpregs)); +} + +static inline void save_access_regs(unsigned int *acrs) +{ + asm volatile("stam 0,15,%0" : "=Q" (*acrs)); +} + +static inline void restore_access_regs(unsigned int *acrs) +{ + asm volatile("lam 0,15,%0" : : "Q" (*acrs)); +} + +#define switch_to(prev,next,last) do { \ + if (prev->mm) { \ + save_fp_regs(&prev->thread.fp_regs); \ + save_access_regs(&prev->thread.acrs[0]); \ + } \ + if (next->mm) { \ + restore_fp_regs(&next->thread.fp_regs); \ + restore_access_regs(&next->thread.acrs[0]); \ + update_per_regs(next); \ + } \ + prev = __switch_to(prev,next); \ +} while (0) + +extern void account_vtime(struct task_struct *, struct task_struct *); +extern void account_tick_vtime(struct task_struct *); + +#define finish_arch_switch(prev) do { \ + set_fs(current->thread.mm_segment); \ + account_vtime(prev, current); \ +} while (0) + +#endif /* __ASM_SWITCH_TO_H */ diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h deleted file mode 100644 index 2e0bb7f0f9b..00000000000 --- a/arch/s390/include/asm/system.h +++ /dev/null @@ -1,315 +0,0 @@ -/* - * Copyright IBM Corp. 1999, 2009 - * - * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> - */ - -#ifndef __ASM_SYSTEM_H -#define __ASM_SYSTEM_H - -#include <linux/preempt.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <asm/types.h> -#include <asm/ptrace.h> -#include <asm/setup.h> -#include <asm/processor.h> -#include <asm/lowcore.h> -#include <asm/cmpxchg.h> - -#ifdef __KERNEL__ - -struct task_struct; - -extern struct task_struct *__switch_to(void *, void *); -extern void update_per_regs(struct task_struct *task); - -static inline void save_fp_regs(s390_fp_regs *fpregs) -{ - asm volatile( - " std 0,%O0+8(%R0)\n" - " std 2,%O0+24(%R0)\n" - " std 4,%O0+40(%R0)\n" - " std 6,%O0+56(%R0)" - : "=Q" (*fpregs) : "Q" (*fpregs)); - if (!MACHINE_HAS_IEEE) - return; - asm volatile( - " stfpc %0\n" - " std 1,%O0+16(%R0)\n" - " std 3,%O0+32(%R0)\n" - " std 5,%O0+48(%R0)\n" - " std 7,%O0+64(%R0)\n" - " std 8,%O0+72(%R0)\n" - " std 9,%O0+80(%R0)\n" - " std 10,%O0+88(%R0)\n" - " std 11,%O0+96(%R0)\n" - " std 12,%O0+104(%R0)\n" - " std 13,%O0+112(%R0)\n" - " std 14,%O0+120(%R0)\n" - " std 15,%O0+128(%R0)\n" - : "=Q" (*fpregs) : "Q" (*fpregs)); -} - -static inline void restore_fp_regs(s390_fp_regs *fpregs) -{ - asm volatile( - " ld 0,%O0+8(%R0)\n" - " ld 2,%O0+24(%R0)\n" - " ld 4,%O0+40(%R0)\n" - " ld 6,%O0+56(%R0)" - : : "Q" (*fpregs)); - if (!MACHINE_HAS_IEEE) - return; - asm volatile( - " lfpc %0\n" - " ld 1,%O0+16(%R0)\n" - " ld 3,%O0+32(%R0)\n" - " ld 5,%O0+48(%R0)\n" - " ld 7,%O0+64(%R0)\n" - " ld 8,%O0+72(%R0)\n" - " ld 9,%O0+80(%R0)\n" - " ld 10,%O0+88(%R0)\n" - " ld 11,%O0+96(%R0)\n" - " ld 12,%O0+104(%R0)\n" - " ld 13,%O0+112(%R0)\n" - " ld 14,%O0+120(%R0)\n" - " ld 15,%O0+128(%R0)\n" - : : "Q" (*fpregs)); -} - -static inline void save_access_regs(unsigned int *acrs) -{ - asm volatile("stam 0,15,%0" : "=Q" (*acrs)); -} - -static inline void restore_access_regs(unsigned int *acrs) -{ - asm volatile("lam 0,15,%0" : : "Q" (*acrs)); -} - -#define switch_to(prev,next,last) do { \ - if (prev->mm) { \ - save_fp_regs(&prev->thread.fp_regs); \ - save_access_regs(&prev->thread.acrs[0]); \ - } \ - if (next->mm) { \ - restore_fp_regs(&next->thread.fp_regs); \ - restore_access_regs(&next->thread.acrs[0]); \ - update_per_regs(next); \ - } \ - prev = __switch_to(prev,next); \ -} while (0) - -extern void account_vtime(struct task_struct *, struct task_struct *); -extern void account_tick_vtime(struct task_struct *); - -#ifdef CONFIG_PFAULT -extern int pfault_init(void); -extern void pfault_fini(void); -#else /* CONFIG_PFAULT */ -#define pfault_init() ({-1;}) -#define pfault_fini() do { } while (0) -#endif /* CONFIG_PFAULT */ - -extern void cmma_init(void); -extern int memcpy_real(void *, void *, size_t); -extern void copy_to_absolute_zero(void *dest, void *src, size_t count); -extern int copy_to_user_real(void __user *dest, void *src, size_t count); -extern int copy_from_user_real(void *dest, void __user *src, size_t count); - -#define finish_arch_switch(prev) do { \ - set_fs(current->thread.mm_segment); \ - account_vtime(prev, current); \ -} while (0) - -#define nop() asm volatile("nop") - -/* - * Force strict CPU ordering. - * And yes, this is required on UP too when we're talking - * to devices. - * - * This is very similar to the ppc eieio/sync instruction in that is - * does a checkpoint syncronisation & makes sure that - * all memory ops have completed wrt other CPU's ( see 7-15 POP DJB ). - */ - -#define eieio() asm volatile("bcr 15,0" : : : "memory") -#define SYNC_OTHER_CORES(x) eieio() -#define mb() eieio() -#define rmb() eieio() -#define wmb() eieio() -#define read_barrier_depends() do { } while(0) -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#define smp_read_barrier_depends() read_barrier_depends() -#define smp_mb__before_clear_bit() smp_mb() -#define smp_mb__after_clear_bit() smp_mb() - - -#define set_mb(var, value) do { var = value; mb(); } while (0) - -#ifdef __s390x__ - -#define __ctl_load(array, low, high) ({ \ - typedef struct { char _[sizeof(array)]; } addrtype; \ - asm volatile( \ - " lctlg %1,%2,%0\n" \ - : : "Q" (*(addrtype *)(&array)), \ - "i" (low), "i" (high)); \ - }) - -#define __ctl_store(array, low, high) ({ \ - typedef struct { char _[sizeof(array)]; } addrtype; \ - asm volatile( \ - " stctg %1,%2,%0\n" \ - : "=Q" (*(addrtype *)(&array)) \ - : "i" (low), "i" (high)); \ - }) - -#else /* __s390x__ */ - -#define __ctl_load(array, low, high) ({ \ - typedef struct { char _[sizeof(array)]; } addrtype; \ - asm volatile( \ - " lctl %1,%2,%0\n" \ - : : "Q" (*(addrtype *)(&array)), \ - "i" (low), "i" (high)); \ -}) - -#define __ctl_store(array, low, high) ({ \ - typedef struct { char _[sizeof(array)]; } addrtype; \ - asm volatile( \ - " stctl %1,%2,%0\n" \ - : "=Q" (*(addrtype *)(&array)) \ - : "i" (low), "i" (high)); \ - }) - -#endif /* __s390x__ */ - -#define __ctl_set_bit(cr, bit) ({ \ - unsigned long __dummy; \ - __ctl_store(__dummy, cr, cr); \ - __dummy |= 1UL << (bit); \ - __ctl_load(__dummy, cr, cr); \ -}) - -#define __ctl_clear_bit(cr, bit) ({ \ - unsigned long __dummy; \ - __ctl_store(__dummy, cr, cr); \ - __dummy &= ~(1UL << (bit)); \ - __ctl_load(__dummy, cr, cr); \ -}) - -/* - * Use to set psw mask except for the first byte which - * won't be changed by this function. - */ -static inline void -__set_psw_mask(unsigned long mask) -{ - __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8))); -} - -#define local_mcck_enable() \ - __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK) -#define local_mcck_disable() \ - __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT) - -#ifdef CONFIG_SMP - -extern void smp_ctl_set_bit(int cr, int bit); -extern void smp_ctl_clear_bit(int cr, int bit); -#define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit) -#define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit) - -#else - -#define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit) -#define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit) - -#endif /* CONFIG_SMP */ - -#define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */ - -/* - * The test_facility function uses the bit odering where the MSB is bit 0. - * That makes it easier to query facility bits with the bit number as - * documented in the Principles of Operation. - */ -static inline int test_facility(unsigned long nr) -{ - unsigned char *ptr; - - if (nr >= MAX_FACILITY_BIT) - return 0; - ptr = (unsigned char *) &S390_lowcore.stfle_fac_list + (nr >> 3); - return (*ptr & (0x80 >> (nr & 7))) != 0; -} - -/** - * stfle - Store facility list extended - * @stfle_fac_list: array where facility list can be stored - * @size: size of passed in array in double words - */ -static inline void stfle(u64 *stfle_fac_list, int size) -{ - unsigned long nr; - - preempt_disable(); - S390_lowcore.stfl_fac_list = 0; - asm volatile( - " .insn s,0xb2b10000,0(0)\n" /* stfl */ - "0:\n" - EX_TABLE(0b, 0b) - : "=m" (S390_lowcore.stfl_fac_list)); - nr = 4; /* bytes stored by stfl */ - memcpy(stfle_fac_list, &S390_lowcore.stfl_fac_list, 4); - if (S390_lowcore.stfl_fac_list & 0x01000000) { - /* More facility bits available with stfle */ - register unsigned long reg0 asm("0") = size - 1; - - asm volatile(".insn s,0xb2b00000,0(%1)" /* stfle */ - : "+d" (reg0) - : "a" (stfle_fac_list) - : "memory", "cc"); - nr = (reg0 + 1) * 8; /* # bytes stored by stfle */ - } - memset((char *) stfle_fac_list + nr, 0, size * 8 - nr); - preempt_enable(); -} - -static inline unsigned short stap(void) -{ - unsigned short cpu_address; - - asm volatile("stap %0" : "=m" (cpu_address)); - return cpu_address; -} - -extern void (*_machine_restart)(char *command); -extern void (*_machine_halt)(void); -extern void (*_machine_power_off)(void); - -extern unsigned long arch_align_stack(unsigned long sp); - -static inline int tprot(unsigned long addr) -{ - int rc = -EFAULT; - - asm volatile( - " tprot 0(%1),0\n" - "0: ipm %0\n" - " srl %0,28\n" - "1:\n" - EX_TABLE(0b,1b) - : "+d" (rc) : "a" (addr) : "cc"); - return rc; -} - -#endif /* __KERNEL__ */ - -#endif diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index 2b23885e81e..8f2cada4f7c 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -16,6 +16,7 @@ */ #include <linux/sched.h> #include <linux/errno.h> +#include <asm/ctl_reg.h> #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -375,4 +376,9 @@ clear_user(void __user *to, unsigned long n) return n; } +extern int memcpy_real(void *, void *, size_t); +extern void copy_to_absolute_zero(void *dest, void *src, size_t count); +extern int copy_to_user_real(void __user *dest, void *src, size_t count); +extern int copy_from_user_real(void *dest, void __user *src, size_t count); + #endif /* __S390_UACCESS_H */ |