diff options
Diffstat (limited to 'include/asm-s390/page.h')
| -rw-r--r-- | include/asm-s390/page.h | 112 |
1 files changed, 34 insertions, 78 deletions
diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h index b2628dc5c490..363ea761d5ee 100644 --- a/include/asm-s390/page.h +++ b/include/asm-s390/page.h @@ -22,89 +22,45 @@ #include <asm/setup.h> #ifndef __ASSEMBLY__ -#ifndef __s390x__ - -static inline void clear_page(void *page) -{ - register_pair rp; - - rp.subreg.even = (unsigned long) page; - rp.subreg.odd = (unsigned long) 4096; - asm volatile (" slr 1,1\n" - " mvcl %0,0" - : "+&a" (rp) : : "memory", "cc", "1" ); -} - -static inline void copy_page(void *to, void *from) -{ - if (MACHINE_HAS_MVPG) - asm volatile (" sr 0,0\n" - " mvpg %0,%1" - : : "a" ((void *)(to)), "a" ((void *)(from)) - : "memory", "cc", "0" ); - else - asm volatile (" mvc 0(256,%0),0(%1)\n" - " mvc 256(256,%0),256(%1)\n" - " mvc 512(256,%0),512(%1)\n" - " mvc 768(256,%0),768(%1)\n" - " mvc 1024(256,%0),1024(%1)\n" - " mvc 1280(256,%0),1280(%1)\n" - " mvc 1536(256,%0),1536(%1)\n" - " mvc 1792(256,%0),1792(%1)\n" - " mvc 2048(256,%0),2048(%1)\n" - " mvc 2304(256,%0),2304(%1)\n" - " mvc 2560(256,%0),2560(%1)\n" - " mvc 2816(256,%0),2816(%1)\n" - " mvc 3072(256,%0),3072(%1)\n" - " mvc 3328(256,%0),3328(%1)\n" - " mvc 3584(256,%0),3584(%1)\n" - " mvc 3840(256,%0),3840(%1)\n" - : : "a"((void *)(to)),"a"((void *)(from)) - : "memory" ); -} - -#else /* __s390x__ */ - static inline void clear_page(void *page) { - asm volatile (" lgr 2,%0\n" - " lghi 3,4096\n" - " slgr 1,1\n" - " mvcl 2,0" - : : "a" ((void *) (page)) - : "memory", "cc", "1", "2", "3" ); + register unsigned long reg1 asm ("1") = 0; + register void *reg2 asm ("2") = page; + register unsigned long reg3 asm ("3") = 4096; + asm volatile( + " mvcl 2,0" + : "+d" (reg2), "+d" (reg3) : "d" (reg1) : "memory", "cc"); } static inline void copy_page(void *to, void *from) { - if (MACHINE_HAS_MVPG) - asm volatile (" sgr 0,0\n" - " mvpg %0,%1" - : : "a" ((void *)(to)), "a" ((void *)(from)) - : "memory", "cc", "0" ); - else - asm volatile (" mvc 0(256,%0),0(%1)\n" - " mvc 256(256,%0),256(%1)\n" - " mvc 512(256,%0),512(%1)\n" - " mvc 768(256,%0),768(%1)\n" - " mvc 1024(256,%0),1024(%1)\n" - " mvc 1280(256,%0),1280(%1)\n" - " mvc 1536(256,%0),1536(%1)\n" - " mvc 1792(256,%0),1792(%1)\n" - " mvc 2048(256,%0),2048(%1)\n" - " mvc 2304(256,%0),2304(%1)\n" - " mvc 2560(256,%0),2560(%1)\n" - " mvc 2816(256,%0),2816(%1)\n" - " mvc 3072(256,%0),3072(%1)\n" - " mvc 3328(256,%0),3328(%1)\n" - " mvc 3584(256,%0),3584(%1)\n" - " mvc 3840(256,%0),3840(%1)\n" - : : "a"((void *)(to)),"a"((void *)(from)) - : "memory" ); + if (MACHINE_HAS_MVPG) { + register unsigned long reg0 asm ("0") = 0; + asm volatile( + " mvpg %0,%1" + : : "a" (to), "a" (from), "d" (reg0) + : "memory", "cc"); + } else + asm volatile( + " mvc 0(256,%0),0(%1)\n" + " mvc 256(256,%0),256(%1)\n" + " mvc 512(256,%0),512(%1)\n" + " mvc 768(256,%0),768(%1)\n" + " mvc 1024(256,%0),1024(%1)\n" + " mvc 1280(256,%0),1280(%1)\n" + " mvc 1536(256,%0),1536(%1)\n" + " mvc 1792(256,%0),1792(%1)\n" + " mvc 2048(256,%0),2048(%1)\n" + " mvc 2304(256,%0),2304(%1)\n" + " mvc 2560(256,%0),2560(%1)\n" + " mvc 2816(256,%0),2816(%1)\n" + " mvc 3072(256,%0),3072(%1)\n" + " mvc 3328(256,%0),3328(%1)\n" + " mvc 3584(256,%0),3584(%1)\n" + " mvc 3840(256,%0),3840(%1)\n" + : : "a" (to), "a" (from) : "memory"); } -#endif /* __s390x__ */ - #define clear_user_page(page, vaddr, pg) clear_page(page) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) @@ -159,7 +115,7 @@ extern unsigned int default_storage_key; static inline void page_set_storage_key(unsigned long addr, unsigned int skey) { - asm volatile ( "sske %0,%1" : : "d" (skey), "a" (addr) ); + asm volatile("sske %0,%1" : : "d" (skey), "a" (addr)); } static inline unsigned int @@ -167,8 +123,7 @@ page_get_storage_key(unsigned long addr) { unsigned int skey; - asm volatile ( "iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0) ); - + asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0)); return skey; } @@ -182,6 +137,7 @@ page_get_storage_key(unsigned long addr) #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 pfn_valid(pfn) ((pfn) < max_mapnr) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) |