diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/diag.c | 102 | ||||
| -rw-r--r-- | arch/s390/kernel/s390_ksyms.c | 1 | ||||
| -rw-r--r-- | arch/s390/mm/cmm.c | 1 | ||||
| -rw-r--r-- | arch/s390/mm/init.c | 17 |
5 files changed, 104 insertions, 19 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 3195d375bd51..56cb71007cd9 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -6,7 +6,7 @@ EXTRA_AFLAGS := -traditional obj-y := bitmap.o traps.o time.o process.o base.o early.o \ setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \ - semaphore.o s390_ext.o debug.o irq.o ipl.o dis.o + semaphore.o s390_ext.o debug.o irq.o ipl.o dis.o diag.o obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o) obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o) diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c new file mode 100644 index 000000000000..c032d11da8a1 --- /dev/null +++ b/arch/s390/kernel/diag.c @@ -0,0 +1,102 @@ +/* + * Implementation of s390 diagnose codes + * + * Copyright IBM Corp. 2007 + * Author(s): Michael Holzheu <holzheu@de.ibm.com> + */ + +#include <linux/module.h> +#include <asm/diag.h> + +/* + * Diagnose 10: Release pages + */ +void diag10(unsigned long addr) +{ + if (addr >= 0x7ff00000) + return; + asm volatile( +#ifdef CONFIG_64BIT + " sam31\n" + " diag %0,%0,0x10\n" + "0: sam64\n" +#else + " diag %0,%0,0x10\n" + "0:\n" +#endif + EX_TABLE(0b, 0b) + : : "a" (addr)); +} +EXPORT_SYMBOL(diag10); + +/* + * Diagnose 14: Input spool file manipulation + */ +int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) +{ + register unsigned long _ry1 asm("2") = ry1; + register unsigned long _ry2 asm("3") = subcode; + int rc = 0; + + asm volatile( +#ifdef CONFIG_64BIT + " sam31\n" + " diag %2,2,0x14\n" + " sam64\n" +#else + " diag %2,2,0x14\n" +#endif + " ipm %0\n" + " srl %0,28\n" + : "=d" (rc), "+d" (_ry2) + : "d" (rx), "d" (_ry1) + : "cc"); + + return rc; +} +EXPORT_SYMBOL(diag14); + +/* + * Diagnose 210: Get information about a virtual device + */ +int diag210(struct diag210 *addr) +{ + /* + * diag 210 needs its data below the 2GB border, so we + * use a static data area to be sure + */ + static struct diag210 diag210_tmp; + static DEFINE_SPINLOCK(diag210_lock); + unsigned long flags; + int ccode; + + spin_lock_irqsave(&diag210_lock, flags); + diag210_tmp = *addr; + +#ifdef CONFIG_64BIT + asm volatile( + " lhi %0,-1\n" + " sam31\n" + " diag %1,0,0x210\n" + "0: ipm %0\n" + " srl %0,28\n" + "1: sam64\n" + EX_TABLE(0b, 1b) + : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); +#else + asm volatile( + " lhi %0,-1\n" + " diag %1,0,0x210\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + EX_TABLE(0b, 1b) + : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); +#endif + + *addr = diag210_tmp; + spin_unlock_irqrestore(&diag210_lock, flags); + + return ccode; +} +EXPORT_SYMBOL(diag210); diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c index 90b5ef529eb7..7234c737f825 100644 --- a/arch/s390/kernel/s390_ksyms.c +++ b/arch/s390/kernel/s390_ksyms.c @@ -25,7 +25,6 @@ EXPORT_SYMBOL(_oi_bitmap); EXPORT_SYMBOL(_ni_bitmap); EXPORT_SYMBOL(_zb_findmap); EXPORT_SYMBOL(_sb_findmap); -EXPORT_SYMBOL(diag10); /* * semaphore ops diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c index c5b2f4f078bc..fabc50adc46a 100644 --- a/arch/s390/mm/cmm.c +++ b/arch/s390/mm/cmm.c @@ -20,6 +20,7 @@ #include <asm/pgalloc.h> #include <asm/uaccess.h> +#include <asm/diag.h> static char *sender = "VMRMSVM"; module_param(sender, charp, 0400); diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 9098531a2671..3a25bbf2eb0a 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -42,23 +42,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE))); char empty_zero_page[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE))); -void diag10(unsigned long addr) -{ - if (addr >= 0x7ff00000) - return; - asm volatile( -#ifdef CONFIG_64BIT - " sam31\n" - " diag %0,%0,0x10\n" - "0: sam64\n" -#else - " diag %0,%0,0x10\n" - "0:\n" -#endif - EX_TABLE(0b,0b) - : : "a" (addr)); -} - void show_mem(void) { int i, total = 0, reserved = 0; |
