| /* $Id: blockops.S,v 1.41 2001/12/05 06:05:35 davem Exp $ |
| * blockops.S: UltraSparc block zero optimized routines. |
| * |
| * Copyright (C) 1996, 1998, 1999, 2000 David S. Miller (davem@redhat.com) |
| * Copyright (C) 1997 Jakub Jelinek (jakub@redhat.com) |
| */ |
| |
| #include "VIS.h" |
| #include <asm/visasm.h> |
| #include <asm/page.h> |
| #include <asm/pgtable.h> |
| #include <asm/asm_offsets.h> |
| |
| #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; |
| |
| #define DCACHE_SIZE (PAGE_SIZE * 2) |
| #define TLBTEMP_ENT1 (60 << 3) |
| #define TLBTEMP_ENT2 (61 << 3) |
| #define TLBTEMP_ENTSZ (1 << 3) |
| |
| #if (PAGE_SHIFT == 13) || (PAGE_SHIFT == 19) |
| #define PAGE_SIZE_REM 0x80 |
| #elif (PAGE_SHIFT == 16) || (PAGE_SHIFT == 22) |
| #define PAGE_SIZE_REM 0x100 |
| #else |
| #error Wrong PAGE_SHIFT specified |
| #endif |
| |
| .text |
| |
| .align 32 |
| .globl copy_user_page |
| .type copy_user_page,@function |
| copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */ |
| VISEntry |
| sethi %hi(PAGE_SIZE), %g3 |
| sub %o0, %g4, %g1 |
| and %o2, %g3, %o0 |
| sethi %hi(TLBTEMP_BASE), %o3 |
| sethi %uhi(_PAGE_VALID | _PAGE_SZBITS), %g3 |
| sub %o1, %g4, %g2 |
| sllx %g3, 32, %g3 |
| mov TLB_TAG_ACCESS, %o2 |
| or %g3, (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W), %g3 |
| sethi %hi(DCACHE_SIZE), %o1 |
| or %g1, %g3, %g1 |
| or %g2, %g3, %g2 |
| add %o0, %o3, %o0 |
| add %o0, %o1, %o1 |
| #define FIX_INSN_1 0x96102060 /* mov (12 << 3), %o3 */ |
| cheetah_patch_1: |
| mov TLBTEMP_ENT1, %o3 |
| rdpr %pstate, %g3 |
| wrpr %g3, PSTATE_IE, %pstate |
| |
| /* Do this now, before loading the fixed TLB entries for copying, |
| * so we do not risk a multiple TLB match condition later when |
| * restoring those entries. |
| */ |
| ldub [%g6 + AOFF_task_thread + AOFF_thread_use_blkcommit], %g3 |
| |
| /* Spitfire Errata #32 workaround */ |
| mov 0x8, %o4 |
| stxa %g0, [%o4] ASI_DMMU |
| membar #Sync |
| |
| ldxa [%o3] ASI_DTLB_TAG_READ, %o4 |
| |
| /* Spitfire Errata #32 workaround */ |
| mov 0x8, %o5 |
| stxa %g0, [%o5] ASI_DMMU |
| membar #Sync |
| |
| ldxa [%o3] ASI_DTLB_DATA_ACCESS, %g0 |
| ldxa [%o3] ASI_DTLB_DATA_ACCESS, %o5 |
| stxa %o0, [%o2] ASI_DMMU |
| stxa %g1, [%o3] ASI_DTLB_DATA_ACCESS |
| membar #Sync |
| add %o3, (TLBTEMP_ENTSZ), %o3 |
| |
| /* Spitfire Errata #32 workaround */ |
| mov 0x8, %g5 |
| stxa %g0, [%g5] ASI_DMMU |
| membar #Sync |
| |
| ldxa [%o3] ASI_DTLB_TAG_READ, %g5 |
| |
| /* Spitfire Errata #32 workaround */ |
| mov 0x8, %g7 |
| stxa %g0, [%g7] ASI_DMMU |
| membar #Sync |
| |
| ldxa [%o3] ASI_DTLB_DATA_ACCESS, %g0 |
| ldxa [%o3] ASI_DTLB_DATA_ACCESS, %g7 |
| stxa %o1, [%o2] ASI_DMMU |
| stxa %g2, [%o3] ASI_DTLB_DATA_ACCESS |
| membar #Sync |
| |
| cmp %g3, 0 |
| bne,pn %xcc, copy_page_using_blkcommit |
| nop |
| |
| rdpr %ver, %g3 |
| sllx %g3, 16, %g3 |
| srlx %g3, 32 + 16, %g3 |
| cmp %g3, 0x14 |
| bne,pt %icc, spitfire_copy_user_page |
| nop |
| |
| cheetah_copy_user_page: |
| sethi %hi((PAGE_SIZE/64)-7), %o2 ! A0 Group |
| prefetch [%o1 + 0x000], #one_read ! MS |
| or %o2, %lo((PAGE_SIZE/64)-7), %o2 ! A1 Group |
| prefetch [%o1 + 0x040], #one_read ! MS |
| prefetch [%o1 + 0x080], #one_read ! MS Group |
| prefetch [%o1 + 0x0c0], #one_read ! MS Group |
| ldd [%o1 + 0x000], %f0 ! MS Group |
| prefetch [%o1 + 0x100], #one_read ! MS Group |
| ldd [%o1 + 0x008], %f2 ! AX |
| prefetch [%o1 + 0x140], #one_read ! MS Group |
| ldd [%o1 + 0x010], %f4 ! AX |
| prefetch [%o1 + 0x180], #one_read ! MS Group |
| fmovd %f0, %f32 ! FGA Group |
| ldd [%o1 + 0x018], %f6 ! AX |
| fmovd %f2, %f34 ! FGA Group |
| ldd [%o1 + 0x020], %f8 ! MS |
| fmovd %f4, %f36 ! FGA Group |
| ldd [%o1 + 0x028], %f10 ! AX |
| membar #StoreStore ! MS |
| fmovd %f6, %f38 ! FGA Group |
| ldd [%o1 + 0x030], %f12 ! MS |
| fmovd %f8, %f40 ! FGA Group |
| ldd [%o1 + 0x038], %f14 ! AX |
| fmovd %f10, %f42 ! FGA Group |
| ldd [%o1 + 0x040], %f16 ! MS |
| 1: ldd [%o1 + 0x048], %f2 ! AX (Group) |
| fmovd %f12, %f44 ! FGA |
| ldd [%o1 + 0x050], %f4 ! MS |
| fmovd %f14, %f46 ! FGA Group |
| stda %f32, [%o0] ASI_BLK_P ! MS |
| ldd [%o1 + 0x058], %f6 ! AX |
| fmovd %f16, %f32 ! FGA Group (8-cycle stall) |
| ldd [%o1 + 0x060], %f8 ! MS |
| fmovd %f2, %f34 ! FGA Group |
| ldd [%o1 + 0x068], %f10 ! AX |
| fmovd %f4, %f36 ! FGA Group |
| ldd [%o1 + 0x070], %f12 ! MS |
| fmovd %f6, %f38 ! FGA Group |
| ldd [%o1 + 0x078], %f14 ! AX |
| fmovd %f8, %f40 ! FGA Group |
| ldd [%o1 + 0x080], %f16 ! AX |
| prefetch [%o1 + 0x180], #one_read ! MS |
| fmovd %f10, %f42 ! FGA Group |
| subcc %o2, 1, %o2 ! A0 |
| add %o0, 0x40, %o0 ! A1 |
| bne,pt %xcc, 1b ! BR |
| add %o1, 0x40, %o1 ! A0 Group |
| |
| mov 5, %o2 ! A0 Group |
| 1: ldd [%o1 + 0x048], %f2 ! AX |
| fmovd %f12, %f44 ! FGA |
| ldd [%o1 + 0x050], %f4 ! MS |
| fmovd %f14, %f46 ! FGA Group |
| stda %f32, [%o0] ASI_BLK_P ! MS |
| ldd [%o1 + 0x058], %f6 ! AX |
| fmovd %f16, %f32 ! FGA Group (8-cycle stall) |
| ldd [%o1 + 0x060], %f8 ! MS |
| fmovd %f2, %f34 ! FGA Group |
| ldd [%o1 + 0x068], %f10 ! AX |
| fmovd %f4, %f36 ! FGA Group |
| ldd [%o1 + 0x070], %f12 ! MS |
| fmovd %f6, %f38 ! FGA Group |
| ldd [%o1 + 0x078], %f14 ! AX |
| fmovd %f8, %f40 ! FGA Group |
| ldd [%o1 + 0x080], %f16 ! MS |
| fmovd %f10, %f42 ! FGA Group |
| subcc %o2, 1, %o2 ! A0 |
| add %o0, 0x40, %o0 ! A1 |
| bne,pt %xcc, 1b ! BR |
| add %o1, 0x40, %o1 ! A0 Group |
| |
| ldd [%o1 + 0x048], %f2 ! AX |
| fmovd %f12, %f44 ! FGA |
| ldd [%o1 + 0x050], %f4 ! MS |
| fmovd %f14, %f46 ! FGA Group |
| stda %f32, [%o0] ASI_BLK_P ! MS |
| ldd [%o1 + 0x058], %f6 ! AX |
| fmovd %f16, %f32 ! FGA Group (8-cycle stall) |
| ldd [%o1 + 0x060], %f8 ! MS |
| fmovd %f2, %f34 ! FGA Group |
| ldd [%o1 + 0x068], %f10 ! AX |
| fmovd %f4, %f36 ! FGA Group |
| ldd [%o1 + 0x070], %f12 ! MS |
| fmovd %f6, %f38 ! FGA Group |
| add %o0, 0x40, %o0 ! A0 |
| ldd [%o1 + 0x078], %f14 ! AX |
| fmovd %f8, %f40 ! FGA Group |
| fmovd %f10, %f42 ! FGA Group |
| fmovd %f12, %f44 ! FGA Group |
| fmovd %f14, %f46 ! FGA Group |
| stda %f32, [%o0] ASI_BLK_P ! MS |
| ba,a,pt %xcc, copy_user_page_continue |
| |
| spitfire_copy_user_page: |
| 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_BLK_P |
| 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_BLK_P |
| 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_BLK_P |
| 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) || (PAGE_SHIFT == 22) |
| TOUCH(f0, f2, f4, f6, f8, f10, f12, f14) |
| ldda [%o1] ASI_BLK_P, %f32 |
| stda %f48, [%o0] ASI_BLK_P |
| 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_BLK_P |
| add %o1, 0x40, %o1 |
| sub %o2, 0x40, %o2 |
| add %o0, 0x40, %o0 |
| membar #Sync |
| stda %f32, [%o0] ASI_BLK_P |
| add %o0, 0x40, %o0 |
| stda %f0, [%o0] ASI_BLK_P |
| #else |
| membar #Sync |
| stda %f0, [%o0] ASI_BLK_P |
| add %o0, 0x40, %o0 |
| stda %f16, [%o0] ASI_BLK_P |
| #endif |
| copy_user_page_continue: |
| membar #Sync |
| VISExit |
| |
| mov TLB_TAG_ACCESS, %o2 |
| stxa %g5, [%o2] ASI_DMMU |
| stxa %g7, [%o3] ASI_DTLB_DATA_ACCESS |
| membar #Sync |
| sub %o3, (TLBTEMP_ENTSZ), %o3 |
| stxa %o4, [%o2] ASI_DMMU |
| stxa %o5, [%o3] ASI_DTLB_DATA_ACCESS |
| membar #Sync |
| rdpr %pstate, %g3 |
| jmpl %o7 + 0x8, %g0 |
| wrpr %g3, PSTATE_IE, %pstate |
| |
| copy_page_using_blkcommit: |
| membar #LoadStore | #StoreStore | #StoreLoad |
| 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_BLK_COMMIT_P |
| 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_BLK_COMMIT_P |
| 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_BLK_COMMIT_P |
| 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) || (PAGE_SHIFT == 22) |
| TOUCH(f0, f2, f4, f6, f8, f10, f12, f14) |
| ldda [%o1] ASI_BLK_P, %f32 |
| stda %f48, [%o0] ASI_BLK_COMMIT_P |
| 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_BLK_COMMIT_P |
| add %o1, 0x40, %o1 |
| sub %o2, 0x40, %o2 |
| add %o0, 0x40, %o0 |
| membar #Sync |
| stda %f32, [%o0] ASI_BLK_COMMIT_P |
| add %o0, 0x40, %o0 |
| ba,pt %xcc, copy_user_page_continue |
| stda %f0, [%o0] ASI_BLK_COMMIT_P |
| #else |
| membar #Sync |
| stda %f0, [%o0] ASI_BLK_COMMIT_P |
| add %o0, 0x40, %o0 |
| ba,pt %xcc, copy_user_page_continue |
| stda %f16, [%o0] ASI_BLK_COMMIT_P |
| #endif |
| |
| .align 32 |
| .globl _clear_page |
| .type _clear_page,@function |
| _clear_page: /* %o0=dest */ |
| VISEntryHalf |
| ba,pt %xcc, clear_page_common |
| clr %o4 |
| |
| .align 32 |
| .globl clear_user_page |
| .type clear_user_page,@function |
| clear_user_page: /* %o0=dest, %o1=vaddr */ |
| VISEntryHalf |
| sethi %hi(PAGE_SIZE), %g3 |
| sub %o0, %g4, %g1 |
| and %o1, %g3, %o0 |
| mov TLB_TAG_ACCESS, %o2 |
| sethi %uhi(_PAGE_VALID | _PAGE_SZBITS), %g3 |
| sethi %hi(TLBTEMP_BASE), %o3 |
| sllx %g3, 32, %g3 |
| or %g3, (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W), %g3 |
| or %g1, %g3, %g1 |
| add %o0, %o3, %o0 |
| #define FIX_INSN_2 0x96102068 /* mov (13 << 3), %o3 */ |
| cheetah_patch_2: |
| mov TLBTEMP_ENT2, %o3 |
| rdpr %pstate, %g3 |
| wrpr %g3, PSTATE_IE, %pstate |
| |
| /* Spitfire Errata #32 workaround */ |
| mov 0x8, %g5 |
| stxa %g0, [%g5] ASI_DMMU |
| membar #Sync |
| |
| ldxa [%o3] ASI_DTLB_TAG_READ, %g5 |
| |
| /* Spitfire Errata #32 workaround */ |
| mov 0x8, %g7 |
| stxa %g0, [%g7] ASI_DMMU |
| membar #Sync |
| |
| ldxa [%o3] ASI_DTLB_DATA_ACCESS, %g0 |
| ldxa [%o3] ASI_DTLB_DATA_ACCESS, %g7 |
| stxa %o0, [%o2] ASI_DMMU |
| stxa %g1, [%o3] ASI_DTLB_DATA_ACCESS |
| membar #Sync |
| |
| mov 1, %o4 |
| |
| clear_page_common: |
| membar #StoreLoad | #StoreStore | #LoadStore ! LSU Group |
| fzero %f0 ! FPA Group |
| sethi %hi(PAGE_SIZE/256), %o1 ! IEU0 |
| fzero %f2 ! FPA Group |
| or %o1, %lo(PAGE_SIZE/256), %o1 ! IEU0 |
| faddd %f0, %f2, %f4 ! FPA Group |
| fmuld %f0, %f2, %f6 ! FPM |
| faddd %f0, %f2, %f8 ! FPA Group |
| fmuld %f0, %f2, %f10 ! FPM |
| |
| faddd %f0, %f2, %f12 ! FPA Group |
| fmuld %f0, %f2, %f14 ! FPM |
| 1: stda %f0, [%o0 + %g0] ASI_BLK_P ! Store Group |
| add %o0, 0x40, %o0 ! IEU0 |
| stda %f0, [%o0 + %g0] ASI_BLK_P ! Store Group |
| add %o0, 0x40, %o0 ! IEU0 |
| stda %f0, [%o0 + %g0] ASI_BLK_P ! Store Group |
| |
| add %o0, 0x40, %o0 ! IEU0 Group |
| stda %f0, [%o0 + %g0] ASI_BLK_P ! Store Group |
| subcc %o1, 1, %o1 ! IEU1 |
| bne,pt %icc, 1b ! CTI |
| add %o0, 0x40, %o0 ! IEU0 Group |
| membar #Sync ! LSU Group |
| VISExitHalf |
| |
| brnz,pt %o4, 1f |
| nop |
| |
| retl |
| nop |
| |
| 1: stxa %g5, [%o2] ASI_DMMU |
| stxa %g7, [%o3] ASI_DTLB_DATA_ACCESS |
| membar #Sync |
| jmpl %o7 + 0x8, %g0 |
| wrpr %g3, 0x0, %pstate |
| |
| .globl cheetah_patch_pgcopyops |
| cheetah_patch_pgcopyops: |
| sethi %hi(FIX_INSN_1), %g1 |
| or %g1, %lo(FIX_INSN_1), %g1 |
| sethi %hi(cheetah_patch_1), %g2 |
| or %g2, %lo(cheetah_patch_1), %g2 |
| stw %g1, [%g2] |
| flush %g2 |
| sethi %hi(FIX_INSN_2), %g1 |
| or %g1, %lo(FIX_INSN_2), %g1 |
| sethi %hi(cheetah_patch_2), %g2 |
| or %g2, %lo(cheetah_patch_2), %g2 |
| stw %g1, [%g2] |
| flush %g2 |
| retl |
| nop |
| |
| #undef FIX_INSN1 |
| #undef FIX_INSN2 |
| #undef PAGE_SIZE_REM |
