diff options
Diffstat (limited to 'arch/sparc64/lib/copy_page.S')
-rw-r--r-- | arch/sparc64/lib/copy_page.S | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/arch/sparc64/lib/copy_page.S b/arch/sparc64/lib/copy_page.S deleted file mode 100644 index b243d3b..0000000 --- a/arch/sparc64/lib/copy_page.S +++ /dev/null @@ -1,250 +0,0 @@ -/* clear_page.S: UltraSparc optimized copy page. - * - * Copyright (C) 1996, 1998, 1999, 2000, 2004 David S. Miller (davem@redhat.com) - * Copyright (C) 1997 Jakub Jelinek (jakub@redhat.com) - */ - -#include <asm/visasm.h> -#include <asm/thread_info.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/spitfire.h> -#include <asm/head.h> - - /* What we used to do was lock a TLB entry into a specific - * TLB slot, clear the page with interrupts disabled, then - * restore the original TLB entry. This was great for - * disturbing the TLB as little as possible, but it meant - * we had to keep interrupts disabled for a long time. - * - * Now, we simply use the normal TLB loading mechanism, - * and this makes the cpu choose a slot all by itself. - * Then we do a normal TLB flush on exit. We need only - * disable preemption during the clear. - */ - -#define DCACHE_SIZE (PAGE_SIZE * 2) - -#if (PAGE_SHIFT == 13) -#define PAGE_SIZE_REM 0x80 -#elif (PAGE_SHIFT == 16) -#define PAGE_SIZE_REM 0x100 -#else -#error Wrong PAGE_SHIFT specified -#endif - -#define TOUCH(reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7) \ - fmovd %reg0, %f48; fmovd %reg1, %f50; \ - fmovd %reg2, %f52; fmovd %reg3, %f54; \ - fmovd %reg4, %f56; fmovd %reg5, %f58; \ - fmovd %reg6, %f60; fmovd %reg7, %f62; - - .text - - .align 32 - .globl copy_user_page - .type copy_user_page,#function -copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */ - lduw [%g6 + TI_PRE_COUNT], %o4 - sethi %uhi(PAGE_OFFSET), %g2 - sethi %hi(PAGE_SIZE), %o3 - - sllx %g2, 32, %g2 - sethi %hi(PAGE_KERNEL_LOCKED), %g3 - - ldx [%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3 - sub %o0, %g2, %g1 ! dest paddr - - sub %o1, %g2, %g2 ! src paddr - - and %o2, %o3, %o0 ! vaddr D-cache alias bit - or %g1, %g3, %g1 ! dest TTE data - - or %g2, %g3, %g2 ! src TTE data - sethi %hi(TLBTEMP_BASE), %o3 - - sethi %hi(DCACHE_SIZE), %o1 - add %o0, %o3, %o0 ! dest TTE vaddr - - add %o4, 1, %o2 - add %o0, %o1, %o1 ! src TTE vaddr - - /* Disable preemption. */ - mov TLB_TAG_ACCESS, %g3 - stw %o2, [%g6 + TI_PRE_COUNT] - - /* Load TLB entries. */ - rdpr %pstate, %o2 - wrpr %o2, PSTATE_IE, %pstate - stxa %o0, [%g3] ASI_DMMU - stxa %g1, [%g0] ASI_DTLB_DATA_IN - membar #Sync - stxa %o1, [%g3] ASI_DMMU - stxa %g2, [%g0] ASI_DTLB_DATA_IN - membar #Sync - wrpr %o2, 0x0, %pstate - -cheetah_copy_page_insn: - ba,pt %xcc, 9f - nop - -1: - VISEntryHalf - membar #StoreLoad | #StoreStore | #LoadStore - sethi %hi((PAGE_SIZE/64)-2), %o2 - mov %o0, %g1 - prefetch [%o1 + 0x000], #one_read - or %o2, %lo((PAGE_SIZE/64)-2), %o2 - prefetch [%o1 + 0x040], #one_read - prefetch [%o1 + 0x080], #one_read - prefetch [%o1 + 0x0c0], #one_read - ldd [%o1 + 0x000], %f0 - prefetch [%o1 + 0x100], #one_read - ldd [%o1 + 0x008], %f2 - prefetch [%o1 + 0x140], #one_read - ldd [%o1 + 0x010], %f4 - prefetch [%o1 + 0x180], #one_read - fmovd %f0, %f16 - ldd [%o1 + 0x018], %f6 - fmovd %f2, %f18 - ldd [%o1 + 0x020], %f8 - fmovd %f4, %f20 - ldd [%o1 + 0x028], %f10 - fmovd %f6, %f22 - ldd [%o1 + 0x030], %f12 - fmovd %f8, %f24 - ldd [%o1 + 0x038], %f14 - fmovd %f10, %f26 - ldd [%o1 + 0x040], %f0 -1: ldd [%o1 + 0x048], %f2 - fmovd %f12, %f28 - ldd [%o1 + 0x050], %f4 - fmovd %f14, %f30 - stda %f16, [%o0] ASI_BLK_P - ldd [%o1 + 0x058], %f6 - fmovd %f0, %f16 - ldd [%o1 + 0x060], %f8 - fmovd %f2, %f18 - ldd [%o1 + 0x068], %f10 - fmovd %f4, %f20 - ldd [%o1 + 0x070], %f12 - fmovd %f6, %f22 - ldd [%o1 + 0x078], %f14 - fmovd %f8, %f24 - ldd [%o1 + 0x080], %f0 - prefetch [%o1 + 0x180], #one_read - fmovd %f10, %f26 - subcc %o2, 1, %o2 - add %o0, 0x40, %o0 - bne,pt %xcc, 1b - add %o1, 0x40, %o1 - - ldd [%o1 + 0x048], %f2 - fmovd %f12, %f28 - ldd [%o1 + 0x050], %f4 - fmovd %f14, %f30 - stda %f16, [%o0] ASI_BLK_P - ldd [%o1 + 0x058], %f6 - fmovd %f0, %f16 - ldd [%o1 + 0x060], %f8 - fmovd %f2, %f18 - ldd [%o1 + 0x068], %f10 - fmovd %f4, %f20 - ldd [%o1 + 0x070], %f12 - fmovd %f6, %f22 - add %o0, 0x40, %o0 - ldd [%o1 + 0x078], %f14 - fmovd %f8, %f24 - fmovd %f10, %f26 - fmovd %f12, %f28 - fmovd %f14, %f30 - stda %f16, [%o0] ASI_BLK_P - membar #Sync - VISExitHalf - ba,pt %xcc, 5f - nop - -9: - VISEntry - ldub [%g6 + TI_FAULT_CODE], %g3 - mov %o0, %g1 - cmp %g3, 0 - rd %asi, %g3 - be,a,pt %icc, 1f - wr %g0, ASI_BLK_P, %asi - wr %g0, ASI_BLK_COMMIT_P, %asi -1: ldda [%o1] ASI_BLK_P, %f0 - add %o1, 0x40, %o1 - ldda [%o1] ASI_BLK_P, %f16 - add %o1, 0x40, %o1 - sethi %hi(PAGE_SIZE), %o2 -1: TOUCH(f0, f2, f4, f6, f8, f10, f12, f14) - ldda [%o1] ASI_BLK_P, %f32 - stda %f48, [%o0] %asi - add %o1, 0x40, %o1 - sub %o2, 0x40, %o2 - add %o0, 0x40, %o0 - TOUCH(f16, f18, f20, f22, f24, f26, f28, f30) - ldda [%o1] ASI_BLK_P, %f0 - stda %f48, [%o0] %asi - add %o1, 0x40, %o1 - sub %o2, 0x40, %o2 - add %o0, 0x40, %o0 - TOUCH(f32, f34, f36, f38, f40, f42, f44, f46) - ldda [%o1] ASI_BLK_P, %f16 - stda %f48, [%o0] %asi - sub %o2, 0x40, %o2 - add %o1, 0x40, %o1 - cmp %o2, PAGE_SIZE_REM - bne,pt %xcc, 1b - add %o0, 0x40, %o0 -#if (PAGE_SHIFT == 16) - TOUCH(f0, f2, f4, f6, f8, f10, f12, f14) - ldda [%o1] ASI_BLK_P, %f32 - stda %f48, [%o0] %asi - add %o1, 0x40, %o1 - sub %o2, 0x40, %o2 - add %o0, 0x40, %o0 - TOUCH(f16, f18, f20, f22, f24, f26, f28, f30) - ldda [%o1] ASI_BLK_P, %f0 - stda %f48, [%o0] %asi - add %o1, 0x40, %o1 - sub %o2, 0x40, %o2 - add %o0, 0x40, %o0 - membar #Sync - stda %f32, [%o0] %asi - add %o0, 0x40, %o0 - stda %f0, [%o0] %asi -#else - membar #Sync - stda %f0, [%o0] %asi - add %o0, 0x40, %o0 - stda %f16, [%o0] %asi -#endif - membar #Sync - wr %g3, 0x0, %asi - VISExit - -5: - stxa %g0, [%g1] ASI_DMMU_DEMAP - membar #Sync - - sethi %hi(DCACHE_SIZE), %g2 - stxa %g0, [%g1 + %g2] ASI_DMMU_DEMAP - membar #Sync - - retl - stw %o4, [%g6 + TI_PRE_COUNT] - - .size copy_user_page, .-copy_user_page - - .globl cheetah_patch_copy_page -cheetah_patch_copy_page: - sethi %hi(0x01000000), %o1 ! NOP - sethi %hi(cheetah_copy_page_insn), %o0 - or %o0, %lo(cheetah_copy_page_insn), %o0 - stw %o1, [%o0] - membar #StoreStore - flush %o0 - retl - nop |