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-rw-r--r--arch/s390/include/asm/Kbuild1
-rw-r--r--arch/s390/include/asm/cpcmd.h7
-rw-r--r--arch/s390/include/asm/ebcdic.h4
-rw-r--r--arch/s390/include/asm/elf.h2
-rw-r--r--arch/s390/include/asm/ipl.h2
-rw-r--r--arch/s390/include/asm/lowcore.h48
-rw-r--r--arch/s390/include/asm/mman.h11
-rw-r--r--arch/s390/include/asm/mmu_context.h33
-rw-r--r--arch/s390/include/asm/nmi.h2
-rw-r--r--arch/s390/include/asm/page-states.h1
-rw-r--r--arch/s390/include/asm/page.h37
-rw-r--r--arch/s390/include/asm/pgalloc.h18
-rw-r--r--arch/s390/include/asm/pgtable.h197
-rw-r--r--arch/s390/include/asm/qdio.h2
-rw-r--r--arch/s390/include/asm/setup.h17
-rw-r--r--arch/s390/include/asm/spinlock.h9
-rw-r--r--arch/s390/include/asm/timex.h40
-rw-r--r--arch/s390/include/asm/tlb.h6
-rw-r--r--arch/s390/include/asm/tlbflush.h7
-rw-r--r--arch/s390/include/asm/topology.h6
-rw-r--r--arch/s390/include/asm/types.h11
-rw-r--r--arch/s390/include/asm/unaligned.h13
-rw-r--r--arch/s390/include/uapi/asm/Kbuild1
-rw-r--r--arch/s390/include/uapi/asm/dasd.h6
-rw-r--r--arch/s390/include/uapi/asm/swab.h89
-rw-r--r--arch/s390/include/uapi/asm/vmcp.h24
26 files changed, 290 insertions, 304 deletions
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild
index b3c88479feba..6e2c9f7e47fa 100644
--- a/arch/s390/include/asm/Kbuild
+++ b/arch/s390/include/asm/Kbuild
@@ -16,4 +16,5 @@ generic-y += mcs_spinlock.h
generic-y += mm-arch-hooks.h
generic-y += preempt.h
generic-y += trace_clock.h
+generic-y += unaligned.h
generic-y += word-at-a-time.h
diff --git a/arch/s390/include/asm/cpcmd.h b/arch/s390/include/asm/cpcmd.h
index 3dfadb5d648f..ca2b0624ad46 100644
--- a/arch/s390/include/asm/cpcmd.h
+++ b/arch/s390/include/asm/cpcmd.h
@@ -10,9 +10,8 @@
/*
* the lowlevel function for cpcmd
- * the caller of __cpcmd has to ensure that the response buffer is below 2 GB
*/
-extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
+int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
/*
* cpcmd is the in-kernel interface for issuing CP commands
@@ -25,8 +24,8 @@ extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code
* response_code: return pointer for VM's error code
* return value: the size of the response. The caller can check if the buffer
* was large enough by comparing the return value and rlen
- * NOTE: If the response buffer is not below 2 GB, cpcmd can sleep
+ * NOTE: If the response buffer is not in real storage, cpcmd can sleep
*/
-extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
+int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
#endif /* _ASM_S390_CPCMD_H */
diff --git a/arch/s390/include/asm/ebcdic.h b/arch/s390/include/asm/ebcdic.h
index c5befc5a3bf5..b71735eab23f 100644
--- a/arch/s390/include/asm/ebcdic.h
+++ b/arch/s390/include/asm/ebcdic.h
@@ -9,9 +9,7 @@
#ifndef _EBCDIC_H
#define _EBCDIC_H
-#ifndef _S390_TYPES_H
-#include <types.h>
-#endif
+#include <linux/types.h>
extern __u8 _ascebc_500[256]; /* ASCII -> EBCDIC 500 conversion table */
extern __u8 _ebcasc_500[256]; /* EBCDIC 500 -> ASCII conversion table */
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index c92ed0170be2..65998a1f5d43 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -191,7 +191,7 @@ struct arch_elf_state {
} while (0)
#define CORE_DUMP_USE_REGSET
-#define ELF_EXEC_PAGESIZE 4096
+#define ELF_EXEC_PAGESIZE PAGE_SIZE
/*
* This is the base location for PIE (ET_DYN with INTERP) loads. On
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index edb5161df7e2..6810bd757312 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -81,7 +81,7 @@ struct ipl_parameter_block {
struct ipl_block_fcp fcp;
struct ipl_block_ccw ccw;
} ipl_info;
-} __attribute__((packed,aligned(4096)));
+} __packed __aligned(PAGE_SIZE);
/*
* IPL validity flags
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 8a5b082797f8..a6870ea6ea8b 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -95,46 +95,46 @@ struct lowcore {
__u64 int_clock; /* 0x0310 */
__u64 mcck_clock; /* 0x0318 */
__u64 clock_comparator; /* 0x0320 */
+ __u64 boot_clock[2]; /* 0x0328 */
/* Current process. */
- __u64 current_task; /* 0x0328 */
- __u8 pad_0x318[0x320-0x318]; /* 0x0330 */
- __u64 kernel_stack; /* 0x0338 */
+ __u64 current_task; /* 0x0338 */
+ __u64 kernel_stack; /* 0x0340 */
/* Interrupt, panic and restart stack. */
- __u64 async_stack; /* 0x0340 */
- __u64 panic_stack; /* 0x0348 */
- __u64 restart_stack; /* 0x0350 */
+ __u64 async_stack; /* 0x0348 */
+ __u64 panic_stack; /* 0x0350 */
+ __u64 restart_stack; /* 0x0358 */
/* Restart function and parameter. */
- __u64 restart_fn; /* 0x0358 */
- __u64 restart_data; /* 0x0360 */
- __u64 restart_source; /* 0x0368 */
+ __u64 restart_fn; /* 0x0360 */
+ __u64 restart_data; /* 0x0368 */
+ __u64 restart_source; /* 0x0370 */
/* Address space pointer. */
- __u64 kernel_asce; /* 0x0370 */
- __u64 user_asce; /* 0x0378 */
+ __u64 kernel_asce; /* 0x0378 */
+ __u64 user_asce; /* 0x0380 */
/*
* The lpp and current_pid fields form a
* 64-bit value that is set as program
* parameter with the LPP instruction.
*/
- __u32 lpp; /* 0x0380 */
- __u32 current_pid; /* 0x0384 */
+ __u32 lpp; /* 0x0388 */
+ __u32 current_pid; /* 0x038c */
/* SMP info area */
- __u32 cpu_nr; /* 0x0388 */
- __u32 softirq_pending; /* 0x038c */
- __u64 percpu_offset; /* 0x0390 */
- __u64 vdso_per_cpu_data; /* 0x0398 */
- __u64 machine_flags; /* 0x03a0 */
- __u32 preempt_count; /* 0x03a8 */
- __u8 pad_0x03ac[0x03b0-0x03ac]; /* 0x03ac */
- __u64 gmap; /* 0x03b0 */
- __u32 spinlock_lockval; /* 0x03b8 */
- __u32 fpu_flags; /* 0x03bc */
- __u8 pad_0x03c0[0x0400-0x03c0]; /* 0x03c0 */
+ __u32 cpu_nr; /* 0x0390 */
+ __u32 softirq_pending; /* 0x0394 */
+ __u64 percpu_offset; /* 0x0398 */
+ __u64 vdso_per_cpu_data; /* 0x03a0 */
+ __u64 machine_flags; /* 0x03a8 */
+ __u32 preempt_count; /* 0x03b0 */
+ __u8 pad_0x03b4[0x03b8-0x03b4]; /* 0x03b4 */
+ __u64 gmap; /* 0x03b8 */
+ __u32 spinlock_lockval; /* 0x03c0 */
+ __u32 fpu_flags; /* 0x03c4 */
+ __u8 pad_0x03c8[0x0400-0x03c8]; /* 0x03c8 */
/* Per cpu primary space access list */
__u32 paste[16]; /* 0x0400 */
diff --git a/arch/s390/include/asm/mman.h b/arch/s390/include/asm/mman.h
deleted file mode 100644
index b79813d9cf68..000000000000
--- a/arch/s390/include/asm/mman.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * S390 version
- *
- * Derived from "include/asm-i386/mman.h"
- */
-#ifndef __S390_MMAN_H__
-#define __S390_MMAN_H__
-
-#include <uapi/asm/mman.h>
-
-#endif /* __S390_MMAN_H__ */
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 24bc41622a98..72e9ca83a668 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -12,6 +12,7 @@
#include <linux/mm_types.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,
struct mm_struct *mm)
@@ -33,7 +34,7 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.use_cmma = 0;
#endif
switch (mm->context.asce_limit) {
- case 1UL << 42:
+ case _REGION2_SIZE:
/*
* forked 3-level task, fall through to set new asce with new
* mm->pgd
@@ -49,12 +50,12 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
_ASCE_USER_BITS | _ASCE_TYPE_REGION1;
break;
- case 1UL << 53:
+ case _REGION1_SIZE:
/* forked 4-level task, set new asce with new mm->pgd */
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
_ASCE_USER_BITS | _ASCE_TYPE_REGION2;
break;
- case 1UL << 31:
+ case _REGION3_SIZE:
/* forked 2-level compat task, set new asce with new mm->pgd */
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
_ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
@@ -138,30 +139,4 @@ static inline void activate_mm(struct mm_struct *prev,
set_user_asce(next);
}
-static inline void arch_dup_mmap(struct mm_struct *oldmm,
- struct mm_struct *mm)
-{
-}
-
-static inline void arch_exit_mmap(struct mm_struct *mm)
-{
-}
-
-static inline void arch_unmap(struct mm_struct *mm,
- struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
-}
-
-static inline void arch_bprm_mm_init(struct mm_struct *mm,
- struct vm_area_struct *vma)
-{
-}
-
-static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
- bool write, bool execute, bool foreign)
-{
- /* by default, allow everything */
- return true;
-}
#endif /* __S390_MMU_CONTEXT_H */
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
index 9d91cf3e427f..c8e211b9a002 100644
--- a/arch/s390/include/asm/nmi.h
+++ b/arch/s390/include/asm/nmi.h
@@ -72,7 +72,7 @@ union mci {
u64 ar : 1; /* 33 access register validity */
u64 da : 1; /* 34 delayed access exception */
u64 : 1; /* 35 */
- u64 gs : 1; /* 36 guarded storage registers */
+ u64 gs : 1; /* 36 guarded storage registers validity */
u64 : 5; /* 37-41 */
u64 pr : 1; /* 42 tod programmable register validity */
u64 fc : 1; /* 43 fp control register validity */
diff --git a/arch/s390/include/asm/page-states.h b/arch/s390/include/asm/page-states.h
index 42267a2fe29e..ca21b28a7b17 100644
--- a/arch/s390/include/asm/page-states.h
+++ b/arch/s390/include/asm/page-states.h
@@ -13,6 +13,7 @@
#define ESSA_SET_POT_VOLATILE 4
#define ESSA_SET_STABLE_RESIDENT 5
#define ESSA_SET_STABLE_IF_RESIDENT 6
+#define ESSA_SET_STABLE_NODAT 7
#define ESSA_MAX ESSA_SET_STABLE_IF_RESIDENT
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 624deaa44230..5d5c2b3500a4 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -10,10 +10,14 @@
#include <linux/const.h>
#include <asm/types.h>
+#define _PAGE_SHIFT 12
+#define _PAGE_SIZE (_AC(1, UL) << _PAGE_SHIFT)
+#define _PAGE_MASK (~(_PAGE_SIZE - 1))
+
/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
+#define PAGE_SHIFT _PAGE_SHIFT
+#define PAGE_SIZE _PAGE_SIZE
+#define PAGE_MASK _PAGE_MASK
#define PAGE_DEFAULT_ACC 0
#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4)
@@ -133,6 +137,9 @@ static inline int page_reset_referenced(unsigned long addr)
struct page;
void arch_free_page(struct page *page, int order);
void arch_alloc_page(struct page *page, int order);
+void arch_set_page_dat(struct page *page, int order);
+void arch_set_page_nodat(struct page *page, int order);
+int arch_test_page_nodat(struct page *page);
void arch_set_page_states(int make_stable);
static inline int devmem_is_allowed(unsigned long pfn)
@@ -145,16 +152,26 @@ static inline int devmem_is_allowed(unsigned long pfn)
#endif /* !__ASSEMBLY__ */
-#define __PAGE_OFFSET 0x0UL
-#define PAGE_OFFSET 0x0UL
-#define __pa(x) (unsigned long)(x)
-#define __va(x) (void *)(unsigned long)(x)
-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define __PAGE_OFFSET 0x0UL
+#define PAGE_OFFSET 0x0UL
+
+#define __pa(x) ((unsigned long)(x))
+#define __va(x) ((void *)(unsigned long)(x))
+
+#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
+
+#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
#define page_to_virt(page) pfn_to_virt(page_to_pfn(page))
+#define phys_to_pfn(kaddr) ((kaddr) >> PAGE_SHIFT)
+#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
+
+#define phys_to_page(kaddr) pfn_to_page(phys_to_pfn(kaddr))
+#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
+
+#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index bb0ff1bb0c4a..a0d9167519b1 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -15,6 +15,8 @@
#include <linux/gfp.h>
#include <linux/mm.h>
+#define CRST_ALLOC_ORDER 2
+
unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);
@@ -42,16 +44,16 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
static inline void crst_table_init(unsigned long *crst, unsigned long entry)
{
- clear_table(crst, entry, sizeof(unsigned long)*2048);
+ clear_table(crst, entry, _CRST_TABLE_SIZE);
}
static inline unsigned long pgd_entry_type(struct mm_struct *mm)
{
- if (mm->context.asce_limit <= (1UL << 31))
+ if (mm->context.asce_limit <= _REGION3_SIZE)
return _SEGMENT_ENTRY_EMPTY;
- if (mm->context.asce_limit <= (1UL << 42))
+ if (mm->context.asce_limit <= _REGION2_SIZE)
return _REGION3_ENTRY_EMPTY;
- if (mm->context.asce_limit <= (1UL << 53))
+ if (mm->context.asce_limit <= _REGION1_SIZE)
return _REGION2_ENTRY_EMPTY;
return _REGION1_ENTRY_EMPTY;
}
@@ -119,7 +121,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
if (!table)
return NULL;
- if (mm->context.asce_limit == (1UL << 31)) {
+ if (mm->context.asce_limit == _REGION3_SIZE) {
/* Forking a compat process with 2 page table levels */
if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
crst_table_free(mm, table);
@@ -131,7 +133,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
- if (mm->context.asce_limit == (1UL << 31))
+ if (mm->context.asce_limit == _REGION3_SIZE)
pgtable_pmd_page_dtor(virt_to_page(pgd));
crst_table_free(mm, (unsigned long *) pgd);
}
@@ -158,4 +160,8 @@ static inline void pmd_populate(struct mm_struct *mm,
extern void rcu_table_freelist_finish(void);
+void vmem_map_init(void);
+void *vmem_crst_alloc(unsigned long val);
+pte_t *vmem_pte_alloc(void);
+
#endif /* _S390_PGALLOC_H */
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 57057fb1cc07..dce708e061ea 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -11,19 +11,6 @@
#ifndef _ASM_S390_PGTABLE_H
#define _ASM_S390_PGTABLE_H
-/*
- * The Linux memory management assumes a three-level page table setup.
- * For s390 64 bit we use up to four of the five levels the hardware
- * provides (region first tables are not used).
- *
- * The "pgd_xxx()" functions are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- *
- * This file contains the functions and defines necessary to modify and use
- * the S390 page table tree.
- */
-#ifndef __ASSEMBLY__
#include <linux/sched.h>
#include <linux/mm_types.h>
#include <linux/page-flags.h>
@@ -34,9 +21,6 @@
extern pgd_t swapper_pg_dir[];
extern void paging_init(void);
-extern void vmem_map_init(void);
-pmd_t *vmem_pmd_alloc(void);
-pte_t *vmem_pte_alloc(void);
enum {
PG_DIRECT_MAP_4K = 0,
@@ -77,38 +61,6 @@ extern unsigned long zero_page_mask;
#define __HAVE_COLOR_ZERO_PAGE
/* TODO: s390 cannot support io_remap_pfn_range... */
-#endif /* !__ASSEMBLY__ */
-
-/*
- * PMD_SHIFT determines the size of the area a second-level page
- * table can map
- * PGDIR_SHIFT determines what a third-level page table entry can map
- */
-#define PMD_SHIFT 20
-#define PUD_SHIFT 31
-#define P4D_SHIFT 42
-#define PGDIR_SHIFT 53
-
-#define PMD_SIZE (1UL << PMD_SHIFT)
-#define PMD_MASK (~(PMD_SIZE-1))
-#define PUD_SIZE (1UL << PUD_SHIFT)
-#define PUD_MASK (~(PUD_SIZE-1))
-#define P4D_SIZE (1UL << P4D_SHIFT)
-#define P4D_MASK (~(P4D_SIZE-1))
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE-1))
-
-/*
- * entries per page directory level: the S390 is two-level, so
- * we don't really have any PMD directory physically.
- * for S390 segment-table entries are combined to one PGD
- * that leads to 1024 pte per pgd
- */
-#define PTRS_PER_PTE 256
-#define PTRS_PER_PMD 2048
-#define PTRS_PER_PUD 2048
-#define PTRS_PER_P4D 2048
-#define PTRS_PER_PGD 2048
#define FIRST_USER_ADDRESS 0UL
@@ -123,7 +75,6 @@ extern unsigned long zero_page_mask;
#define pgd_ERROR(e) \
printk("%s:%d: bad pgd %p.\n", __FILE__, __LINE__, (void *) pgd_val(e))
-#ifndef __ASSEMBLY__
/*
* The vmalloc and module area will always be on the topmost area of the
* kernel mapping. We reserve 128GB (64bit) for vmalloc and modules.
@@ -269,7 +220,7 @@ static inline int is_module_addr(void *addr)
*/
/* Bits in the segment/region table address-space-control-element */
-#define _ASCE_ORIGIN ~0xfffUL/* segment table origin */
+#define _ASCE_ORIGIN ~0xfffUL/* region/segment table origin */
#define _ASCE_PRIVATE_SPACE 0x100 /* private space control */
#define _ASCE_ALT_EVENT 0x80 /* storage alteration event control */
#define _ASCE_SPACE_SWITCH 0x40 /* space switch event */
@@ -320,9 +271,9 @@ static inline int is_module_addr(void *addr)
#define _SEGMENT_ENTRY_BITS 0xfffffffffffffe33UL
#define _SEGMENT_ENTRY_BITS_LARGE 0xfffffffffff0ff33UL
#define _SEGMENT_ENTRY_ORIGIN_LARGE ~0xfffffUL /* large page address */
-#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL/* segment table origin */
-#define _SEGMENT_ENTRY_PROTECT 0x200 /* page protection bit */
-#define _SEGMENT_ENTRY_NOEXEC 0x100 /* region no-execute bit */
+#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL/* page table origin */
+#define _SEGMENT_ENTRY_PROTECT 0x200 /* segment protection bit */
+#define _SEGMENT_ENTRY_NOEXEC 0x100 /* segment no-execute bit */
#define _SEGMENT_ENTRY_INVALID 0x20 /* invalid segment table entry */
#define _SEGMENT_ENTRY (0)
@@ -340,6 +291,54 @@ static inline int is_module_addr(void *addr)
#define _SEGMENT_ENTRY_SOFT_DIRTY 0x0000 /* SW segment soft dirty bit */
#endif
+#define _CRST_ENTRIES 2048 /* number of region/segment table entries */
+#define _PAGE_ENTRIES 256 /* number of page table entries */
+
+#define _CRST_TABLE_SIZE (_CRST_ENTRIES * 8)
+#define _PAGE_TABLE_SIZE (_PAGE_ENTRIES * 8)
+
+#define _REGION1_SHIFT 53
+#define _REGION2_SHIFT 42
+#define _REGION3_SHIFT 31
+#define _SEGMENT_SHIFT 20
+
+#define _REGION1_INDEX (0x7ffUL << _REGION1_SHIFT)
+#define _REGION2_INDEX (0x7ffUL << _REGION2_SHIFT)
+#define _REGION3_INDEX (0x7ffUL << _REGION3_SHIFT)
+#define _SEGMENT_INDEX (0x7ffUL << _SEGMENT_SHIFT)
+#define _PAGE_INDEX (0xffUL << _PAGE_SHIFT)
+
+#define _REGION1_SIZE (1UL << _REGION1_SHIFT)
+#define _REGION2_SIZE (1UL << _REGION2_SHIFT)
+#define _REGION3_SIZE (1UL << _REGION3_SHIFT)
+#define _SEGMENT_SIZE (1UL << _SEGMENT_SHIFT)
+
+#define _REGION1_MASK (~(_REGION1_SIZE - 1))
+#define _REGION2_MASK (~(_REGION2_SIZE - 1))
+#define _REGION3_MASK (~(_REGION3_SIZE - 1))
+#define _SEGMENT_MASK (~(_SEGMENT_SIZE - 1))
+
+#define PMD_SHIFT _SEGMENT_SHIFT
+#define PUD_SHIFT _REGION3_SHIFT
+#define P4D_SHIFT _REGION2_SHIFT
+#define PGDIR_SHIFT _REGION1_SHIFT
+
+#define PMD_SIZE _SEGMENT_SIZE
+#define PUD_SIZE _REGION3_SIZE
+#define P4D_SIZE _REGION2_SIZE
+#define PGDIR_SIZE _REGION1_SIZE
+
+#define PMD_MASK _SEGMENT_MASK
+#define PUD_MASK _REGION3_MASK
+#define P4D_MASK _REGION2_MASK
+#define PGDIR_MASK _REGION1_MASK
+
+#define PTRS_PER_PTE _PAGE_ENTRIES
+#define PTRS_PER_PMD _CRST_ENTRIES
+#define PTRS_PER_PUD _CRST_ENTRIES
+#define PTRS_PER_P4D _CRST_ENTRIES
+#define PTRS_PER_PGD _CRST_ENTRIES
+
/*
* Segment table and region3 table entry encoding
* (R = read-only, I = invalid, y = young bit):
@@ -376,6 +375,7 @@ static inline int is_module_addr(void *addr)
/* Guest Page State used for virtualization */
#define _PGSTE_GPS_ZERO 0x0000000080000000UL
+#define _PGSTE_GPS_NODAT 0x0000000040000000UL
#define _PGSTE_GPS_USAGE_MASK 0x0000000003000000UL
#define _PGSTE_GPS_USAGE_STABLE 0x0000000000000000UL
#define _PGSTE_GPS_USAGE_UNUSED 0x0000000001000000UL
@@ -505,7 +505,7 @@ static inline int mm_alloc_pgste(struct mm_struct *mm)
* In the case that a guest uses storage keys
* faults should no longer be backed by zero pages
*/
-#define mm_forbids_zeropage mm_use_skey
+#define mm_forbids_zeropage mm_has_pgste
static inline int mm_use_skey(struct mm_struct *mm)
{
#ifdef CONFIG_PGSTE
@@ -952,15 +952,30 @@ static inline pte_t pte_mkhuge(pte_t pte)
#define IPTE_GLOBAL 0
#define IPTE_LOCAL 1
-static inline void __ptep_ipte(unsigned long address, pte_t *ptep, int local)
+#define IPTE_NODAT 0x400
+#define IPTE_GUEST_ASCE 0x800
+
+static inline void __ptep_ipte(unsigned long address, pte_t *ptep,
+ unsigned long opt, unsigned long asce,
+ int local)
{
unsigned long pto = (unsigned long) ptep;
- /* Invalidation + TLB flush for the pte */
+ if (__builtin_constant_p(opt) && opt == 0) {
+ /* Invalidation + TLB flush for the pte */
+ asm volatile(
+ " .insn rrf,0xb2210000,%[r1],%[r2],0,%[m4]"
+ : "+m" (*ptep) : [r1] "a" (pto), [r2] "a" (address),
+ [m4] "i" (local));
+ return;
+ }
+
+ /* Invalidate ptes with options + TLB flush of the ptes */
+ opt = opt | (asce & _ASCE_ORIGIN);
asm volatile(
- " .insn rrf,0xb2210000,%[r1],%[r2],0,%[m4]"
- : "+m" (*ptep) : [r1] "a" (pto), [r2] "a" (address),
- [m4] "i" (local));
+ " .insn rrf,0xb2210000,%[r1],%[r2],%[r3],%[m4]"
+ : [r2] "+a" (address), [r3] "+a" (opt)
+ : [r1] "a" (pto), [m4] "i" (local) : "memory");
}
static inline void __ptep_ipte_range(unsigned long address, int nr,
@@ -1341,31 +1356,61 @@ static inline void __pmdp_csp(pmd_t *pmdp)
#define IDTE_GLOBAL 0
#define IDTE_LOCAL 1
-static inline void __pmdp_idte(unsigned long address, pmd_t *pmdp, int local)
+#define IDTE_PTOA 0x0800
+#define IDTE_NODAT 0x1000
+#define IDTE_GUEST_ASCE 0x2000
+
+static inline void __pmdp_idte(unsigned long addr, pmd_t *pmdp,
+ unsigned long opt, unsigned long asce,
+ int local)
{
unsigned long sto;
- sto = (unsigned long) pmdp - pmd_index(address) * sizeof(pmd_t);
- asm volatile(
- " .insn rrf,0xb98e0000,%[r1],%[r2],0,%[m4]"
- : "+m" (*pmdp)
- : [r1] "a" (sto), [r2] "a" ((address & HPAGE_MASK)),
- [m4] "i" (local)
- : "cc" );
+ sto = (unsigned long) pmdp - pmd_index(addr) * sizeof(pmd_t);
+ if (__builtin_constant_p(opt) && opt == 0) {
+ /* flush without guest asce */
+ asm volatile(
+ " .insn rrf,0xb98e0000,%[r1],%[r2],0,%[m4]"
+ : "+m" (*pmdp)
+ : [r1] "a" (sto), [r2] "a" ((addr & HPAGE_MASK)),
+ [m4] "i" (local)
+ : "cc" );
+ } else {
+ /* flush with guest asce */
+ asm volatile(
+ " .insn rrf,0xb98e0000,%[r1],%[r2],%[r3],%[m4]"
+ : "+m" (*pmdp)
+ : [r1] "a" (sto), [r2] "a" ((addr & HPAGE_MASK) | opt),
+ [r3] "a" (asce), [m4] "i" (local)
+ : "cc" );
+ }
}
-static inline void __pudp_idte(unsigned long address, pud_t *pudp, int local)
+static inline void __pudp_idte(unsigned long addr, pud_t *pudp,
+ unsigned long opt, unsigned long asce,
+ int local)
{
unsigned long r3o;
- r3o = (unsigned long) pudp - pud_index(address) * sizeof(pud_t);
+ r3o = (unsigned long) pudp - pud_index(addr) * sizeof(pud_t);
r3o |= _ASCE_TYPE_REGION3;
- asm volatile(
- " .insn rrf,0xb98e0000,%[r1],%[r2],0,%[m4]"
- : "+m" (*pudp)
- : [r1] "a" (r3o), [r2] "a" ((address & PUD_MASK)),
- [m4] "i" (local)
- : "cc");
+ if (__builtin_constant_p(opt) && opt == 0) {
+ /* flush without guest asce */
+ asm volatile(
+ " .insn rrf,0xb98e0000,%[r1],%[r2],0,%[m4]"
+ : "+m" (*pudp)
+ : [r1] "a" (r3o), [r2] "a" ((addr & PUD_MASK)),
+ [m4] "i" (local)
+ : "cc");
+ } else {
+ /* flush with guest asce */
+ asm volatile(
+ " .insn rrf,0xb98e0000,%[r1],%[r2],%[r3],%[m4]"
+ : "+m" (*pudp)
+ : [r1] "a" (r3o), [r2] "a" ((addr & PUD_MASK) | opt),
+ [r3] "a" (asce), [m4] "i" (local)
+ : "cc" );
+ }
}
pmd_t pmdp_xchg_direct(struct mm_struct *, unsigned long, pmd_t *, pmd_t);
@@ -1548,8 +1593,6 @@ static inline swp_entry_t __swp_entry(unsigned long type, unsigned long offset)
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-#endif /* !__ASSEMBLY__ */
-
#define kern_addr_valid(addr) (1)
extern int vmem_add_mapping(unsigned long start, unsigned long size);
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 998b61cd0e56..eaee69e7c42a 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -80,7 +80,7 @@ struct qdr {
u32 qkey : 4;
u32 : 28;
struct qdesfmt0 qdf0[126];
-} __attribute__ ((packed, aligned(4096)));
+} __packed __aligned(PAGE_SIZE);
#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
#define QIB_RFLAGS_ENABLE_QEBSM 0x80
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index cd78155b1829..490e035b3716 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -29,8 +29,10 @@
#define MACHINE_FLAG_TE _BITUL(11)
#define MACHINE_FLAG_TLB_LC _BITUL(12)
#define MACHINE_FLAG_VX _BITUL(13)
-#define MACHINE_FLAG_NX _BITUL(14)
-#define MACHINE_FLAG_GS _BITUL(15)
+#define MACHINE_FLAG_TLB_GUEST _BITUL(14)
+#define MACHINE_FLAG_NX _BITUL(15)
+#define MACHINE_FLAG_GS _BITUL(16)
+#define MACHINE_FLAG_SCC _BITUL(17)
#define LPP_MAGIC _BITUL(31)
#define LPP_PFAULT_PID_MASK _AC(0xffffffff, UL)
@@ -68,8 +70,10 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
+#define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
#define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
#define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
+#define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
/*
* Console mode. Override with conmode=
@@ -104,9 +108,16 @@ extern void pfault_fini(void);
#define pfault_fini() do { } while (0)
#endif /* CONFIG_PFAULT */
+#ifdef CONFIG_VMCP
+void vmcp_cma_reserve(void);
+#else
+static inline void vmcp_cma_reserve(void) { }
+#endif
+
void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
-extern void cmma_init(void);
+void cmma_init(void);
+void cmma_init_nodat(void);
extern void (*_machine_restart)(char *command);
extern void (*_machine_halt)(void);
diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h
index 217ee5210c32..8182b521c42f 100644
--- a/arch/s390/include/asm/spinlock.h
+++ b/arch/s390/include/asm/spinlock.h
@@ -92,10 +92,11 @@ static inline void arch_spin_unlock(arch_spinlock_t *lp)
{
typecheck(int, lp->lock);
asm volatile(
- "st %1,%0\n"
- : "+Q" (lp->lock)
- : "d" (0)
- : "cc", "memory");
+#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
+ " .long 0xb2fa0070\n" /* NIAI 7 */
+#endif
+ " st %1,%0\n"
+ : "=Q" (lp->lock) : "d" (0) : "cc", "memory");
}
/*
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 118535123f34..93f2eb3f277c 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -15,6 +15,8 @@
/* The value of the TOD clock for 1.1.1970. */
#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
+extern u64 clock_comparator_max;
+
/* Inline functions for clock register access. */
static inline int set_tod_clock(__u64 time)
{
@@ -126,7 +128,7 @@ static inline unsigned long long local_tick_disable(void)
unsigned long long old;
old = S390_lowcore.clock_comparator;
- S390_lowcore.clock_comparator = -1ULL;
+ S390_lowcore.clock_comparator = clock_comparator_max;
set_clock_comparator(S390_lowcore.clock_comparator);
return old;
}
@@ -174,24 +176,24 @@ static inline cycles_t get_cycles(void)
return (cycles_t) get_tod_clock() >> 2;
}
-int get_phys_clock(unsigned long long *clock);
+int get_phys_clock(unsigned long *clock);
void init_cpu_timer(void);
unsigned long long monotonic_clock(void);
-extern u64 sched_clock_base_cc;
+extern unsigned char tod_clock_base[16] __aligned(8);
/**
* get_clock_monotonic - returns current time in clock rate units
*
* The caller must ensure that preemption is disabled.
- * The clock and sched_clock_base get changed via stop_machine.
+ * The clock and tod_clock_base get changed via stop_machine.
* Therefore preemption must be disabled when calling this
* function, otherwise the returned value is not guaranteed to
* be monotonic.
*/
static inline unsigned long long get_tod_clock_monotonic(void)
{
- return get_tod_clock() - sched_clock_base_cc;
+ return get_tod_clock() - *(unsigned long long *) &tod_clock_base[1];
}
/**
@@ -218,4 +220,32 @@ static inline unsigned long long tod_to_ns(unsigned long long todval)
return ((todval >> 9) * 125) + (((todval & 0x1ff) * 125) >> 9);
}
+/**
+ * tod_after - compare two 64 bit TOD values
+ * @a: first 64 bit TOD timestamp
+ * @b: second 64 bit TOD timestamp
+ *
+ * Returns: true if a is later than b
+ */
+static inline int tod_after(unsigned long long a, unsigned long long b)
+{
+ if (MACHINE_HAS_SCC)
+ return (long long) a > (long long) b;
+ return a > b;
+}
+
+/**
+ * tod_after_eq - compare two 64 bit TOD values
+ * @a: first 64 bit TOD timestamp
+ * @b: second 64 bit TOD timestamp
+ *
+ * Returns: true if a is later than b
+ */
+static inline int tod_after_eq(unsigned long long a, unsigned long long b)
+{
+ if (MACHINE_HAS_SCC)
+ return (long long) a >= (long long) b;
+ return a >= b;
+}
+
#endif
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h
index 2eb8ff0d6fca..3a14b864b2e3 100644
--- a/arch/s390/include/asm/tlb.h
+++ b/arch/s390/include/asm/tlb.h
@@ -135,7 +135,7 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
unsigned long address)
{
- if (tlb->mm->context.asce_limit <= (1UL << 31))
+ if (tlb->mm->context.asce_limit <= _REGION3_SIZE)
return;
pgtable_pmd_page_dtor(virt_to_page(pmd));
tlb_remove_table(tlb, pmd);
@@ -151,7 +151,7 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
static inline void p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d,
unsigned long address)
{
- if (tlb->mm->context.asce_limit <= (1UL << 53))
+ if (tlb->mm->context.asce_limit <= _REGION1_SIZE)
return;
tlb_remove_table(tlb, p4d);
}
@@ -166,7 +166,7 @@ static inline void p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d,
static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
unsigned long address)
{
- if (tlb->mm->context.asce_limit <= (1UL << 42))
+ if (tlb->mm->context.asce_limit <= _REGION2_SIZE)
return;
tlb_remove_table(tlb, pud);
}
diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
index 39846100682a..4d759f8f4bc7 100644
--- a/arch/s390/include/asm/tlbflush.h
+++ b/arch/s390/include/asm/tlbflush.h
@@ -20,10 +20,15 @@ static inline void __tlb_flush_local(void)
*/
static inline void __tlb_flush_idte(unsigned long asce)
{
+ unsigned long opt;
+
+ opt = IDTE_PTOA;
+ if (MACHINE_HAS_TLB_GUEST)
+ opt |= IDTE_GUEST_ASCE;
/* Global TLB flush for the mm */
asm volatile(
" .insn rrf,0xb98e0000,0,%0,%1,0"
- : : "a" (2048), "a" (asce) : "cc");
+ : : "a" (opt), "a" (asce) : "cc");
}
#ifdef CONFIG_SMP
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index fa1bfce10370..5222da162b69 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -77,12 +77,6 @@ static inline const struct cpumask *cpumask_of_node(int node)
return &node_to_cpumask_map[node];
}
-/*
- * Returns the number of the node containing node 'node'. This
- * architecture is flat, so it is a pretty simple function!
- */
-#define parent_node(node) (node)
-
#define pcibus_to_node(bus) __pcibus_to_node(bus)
#define node_distance(a, b) __node_distance(a, b)
diff --git a/arch/s390/include/asm/types.h b/arch/s390/include/asm/types.h
deleted file mode 100644
index 6740f4f9781f..000000000000
--- a/arch/s390/include/asm/types.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * S390 version
- *
- * Derived from "include/asm-i386/types.h"
- */
-#ifndef _S390_TYPES_H
-#define _S390_TYPES_H
-
-#include <uapi/asm/types.h>
-
-#endif /* _S390_TYPES_H */
diff --git a/arch/s390/include/asm/unaligned.h b/arch/s390/include/asm/unaligned.h
deleted file mode 100644
index da9627afe5d8..000000000000
--- a/arch/s390/include/asm/unaligned.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef _ASM_S390_UNALIGNED_H
-#define _ASM_S390_UNALIGNED_H
-
-/*
- * The S390 can do unaligned accesses itself.
- */
-#include <linux/unaligned/access_ok.h>
-#include <linux/unaligned/generic.h>
-
-#define get_unaligned __get_unaligned_be
-#define put_unaligned __put_unaligned_be
-
-#endif /* _ASM_S390_UNALIGNED_H */
diff --git a/arch/s390/include/uapi/asm/Kbuild b/arch/s390/include/uapi/asm/Kbuild
index ca62066895e0..098f28778a13 100644
--- a/arch/s390/include/uapi/asm/Kbuild
+++ b/arch/s390/include/uapi/asm/Kbuild
@@ -9,4 +9,5 @@ generic-y += param.h
generic-y += poll.h
generic-y += resource.h
generic-y += sockios.h
+generic-y += swab.h
generic-y += termbits.h
diff --git a/arch/s390/include/uapi/asm/dasd.h b/arch/s390/include/uapi/asm/dasd.h
index 1340311dab77..ab5797cdc1b7 100644
--- a/arch/s390/include/uapi/asm/dasd.h
+++ b/arch/s390/include/uapi/asm/dasd.h
@@ -72,7 +72,10 @@ typedef struct dasd_information2_t {
* 0x02: use diag discipline (diag)
* 0x04: set the device initially online (internal use only)
* 0x08: enable ERP related logging
- * 0x20: give access to raw eckd data
+ * 0x10: allow I/O to fail on lost paths
+ * 0x20: allow I/O to fail when a lock was stolen
+ * 0x40: give access to raw eckd data
+ * 0x80: enable discard support
*/
#define DASD_FEATURE_DEFAULT 0x00
#define DASD_FEATURE_READONLY 0x01
@@ -82,6 +85,7 @@ typedef struct dasd_information2_t {
#define DASD_FEATURE_FAILFAST 0x10
#define DASD_FEATURE_FAILONSLCK 0x20
#define DASD_FEATURE_USERAW 0x40
+#define DASD_FEATURE_DISCARD 0x80
#define DASD_PARTN_BITS 2
diff --git a/arch/s390/include/uapi/asm/swab.h b/arch/s390/include/uapi/asm/swab.h
deleted file mode 100644
index da3bfe5cc161..000000000000
--- a/arch/s390/include/uapi/asm/swab.h
+++ /dev/null
@@ -1,89 +0,0 @@
-#ifndef _S390_SWAB_H
-#define _S390_SWAB_H
-
-/*
- * S390 version
- * Copyright IBM Corp. 1999
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- */
-
-#include <linux/types.h>
-
-#ifndef __s390x__
-# define __SWAB_64_THRU_32__
-#endif
-
-#ifdef __s390x__
-static inline __u64 __arch_swab64p(const __u64 *x)
-{
- __u64 result;
-
- asm volatile("lrvg %0,%1" : "=d" (result) : "m" (*x));
- return result;
-}
-#define __arch_swab64p __arch_swab64p
-
-static inline __u64 __arch_swab64(__u64 x)
-{
- __u64 result;
-
- asm volatile("lrvgr %0,%1" : "=d" (result) : "d" (x));
- return result;
-}
-#define __arch_swab64 __arch_swab64
-
-static inline void __arch_swab64s(__u64 *x)
-{
- *x = __arch_swab64p(x);
-}
-#define __arch_swab64s __arch_swab64s
-#endif /* __s390x__ */
-
-static inline __u32 __arch_swab32p(const __u32 *x)
-{
- __u32 result;
-
- asm volatile(
-#ifndef __s390x__
- " icm %0,8,%O1+3(%R1)\n"
- " icm %0,4,%O1+2(%R1)\n"
- " icm %0,2,%O1+1(%R1)\n"
- " ic %0,%1"
- : "=&d" (result) : "Q" (*x) : "cc");
-#else /* __s390x__ */
- " lrv %0,%1"
- : "=d" (result) : "m" (*x));
-#endif /* __s390x__ */
- return result;
-}
-#define __arch_swab32p __arch_swab32p
-
-#ifdef __s390x__
-static inline __u32 __arch_swab32(__u32 x)
-{
- __u32 result;
-
- asm volatile("lrvr %0,%1" : "=d" (result) : "d" (x));
- return result;
-}
-#define __arch_swab32 __arch_swab32
-#endif /* __s390x__ */
-
-static inline __u16 __arch_swab16p(const __u16 *x)
-{
- __u16 result;
-
- asm volatile(
-#ifndef __s390x__
- " icm %0,2,%O1+1(%R1)\n"
- " ic %0,%1\n"
- : "=&d" (result) : "Q" (*x) : "cc");
-#else /* __s390x__ */
- " lrvh %0,%1"
- : "=d" (result) : "m" (*x));
-#endif /* __s390x__ */
- return result;
-}
-#define __arch_swab16p __arch_swab16p
-
-#endif /* _S390_SWAB_H */
diff --git a/arch/s390/include/uapi/asm/vmcp.h b/arch/s390/include/uapi/asm/vmcp.h
new file mode 100644
index 000000000000..4caf71714a55
--- /dev/null
+++ b/arch/s390/include/uapi/asm/vmcp.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright IBM Corp. 2004, 2005
+ * Interface implementation for communication with the z/VM control program
+ * Version 1.0
+ * Author(s): Christian Borntraeger <cborntra@de.ibm.com>
+ *
+ *
+ * z/VMs CP offers the possibility to issue commands via the diagnose code 8
+ * this driver implements a character device that issues these commands and
+ * returns the answer of CP.
+ *
+ * The idea of this driver is based on cpint from Neale Ferguson
+ */
+
+#ifndef _UAPI_ASM_VMCP_H
+#define _UAPI_ASM_VMCP_H
+
+#include <linux/ioctl.h>
+
+#define VMCP_GETCODE _IOR(0x10, 1, int)
+#define VMCP_SETBUF _IOW(0x10, 2, int)
+#define VMCP_GETSIZE _IOR(0x10, 3, int)
+
+#endif /* _UAPI_ASM_VMCP_H */