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284 lines
6.0 KiB
284 lines
6.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* viking.S: High speed Viking cache/mmu operations |
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* |
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* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be) |
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* Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz) |
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* Copyright (C) 1999 Pavel Semerad (semerad@ss1000.ms.mff.cuni.cz) |
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*/ |
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#include <asm/ptrace.h> |
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#include <asm/psr.h> |
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#include <asm/asm-offsets.h> |
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#include <asm/asi.h> |
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#include <asm/mxcc.h> |
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#include <asm/page.h> |
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#include <asm/pgtable.h> |
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#include <asm/pgtsrmmu.h> |
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#include <asm/viking.h> |
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#ifdef CONFIG_SMP |
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.data |
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.align 4 |
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sun4dsmp_flush_tlb_spin: |
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.word 0 |
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#endif |
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.text |
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.align 4 |
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.globl viking_flush_cache_all, viking_flush_cache_mm |
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.globl viking_flush_cache_range, viking_flush_cache_page |
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.globl viking_flush_page, viking_mxcc_flush_page |
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.globl viking_flush_page_for_dma, viking_flush_page_to_ram |
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.globl viking_flush_sig_insns |
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.globl viking_flush_tlb_all, viking_flush_tlb_mm |
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.globl viking_flush_tlb_range, viking_flush_tlb_page |
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viking_flush_page: |
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sethi %hi(PAGE_OFFSET), %g2 |
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sub %o0, %g2, %g3 |
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srl %g3, 12, %g1 ! ppage >> 12 |
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clr %o1 ! set counter, 0 - 127 |
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sethi %hi(PAGE_OFFSET + PAGE_SIZE - 0x80000000), %o3 |
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sethi %hi(0x80000000), %o4 |
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sethi %hi(VIKING_PTAG_VALID), %o5 |
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sethi %hi(2*PAGE_SIZE), %o0 |
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sethi %hi(PAGE_SIZE), %g7 |
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clr %o2 ! block counter, 0 - 3 |
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5: |
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sll %o1, 5, %g4 |
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or %g4, %o4, %g4 ! 0x80000000 | (set << 5) |
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sll %o2, 26, %g5 ! block << 26 |
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6: |
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or %g5, %g4, %g5 |
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ldda [%g5] ASI_M_DATAC_TAG, %g2 |
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cmp %g3, %g1 ! ptag == ppage? |
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bne 7f |
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inc %o2 |
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andcc %g2, %o5, %g0 ! ptag VALID? |
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be 7f |
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add %g4, %o3, %g2 ! (PAGE_OFFSET + PAGE_SIZE) | (set << 5) |
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ld [%g2], %g3 |
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ld [%g2 + %g7], %g3 |
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add %g2, %o0, %g2 |
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ld [%g2], %g3 |
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ld [%g2 + %g7], %g3 |
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add %g2, %o0, %g2 |
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ld [%g2], %g3 |
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ld [%g2 + %g7], %g3 |
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add %g2, %o0, %g2 |
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ld [%g2], %g3 |
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b 8f |
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ld [%g2 + %g7], %g3 |
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7: |
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cmp %o2, 3 |
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ble 6b |
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sll %o2, 26, %g5 ! block << 26 |
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8: inc %o1 |
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cmp %o1, 0x7f |
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ble 5b |
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clr %o2 |
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9: retl |
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nop |
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viking_mxcc_flush_page: |
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sethi %hi(PAGE_OFFSET), %g2 |
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sub %o0, %g2, %g3 |
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sub %g3, -PAGE_SIZE, %g3 ! ppage + PAGE_SIZE |
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sethi %hi(MXCC_SRCSTREAM), %o3 ! assume %hi(MXCC_SRCSTREAM) == %hi(MXCC_DESTSTREAM) |
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mov 0x10, %g2 ! set cacheable bit |
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or %o3, %lo(MXCC_SRCSTREAM), %o2 |
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or %o3, %lo(MXCC_DESSTREAM), %o3 |
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sub %g3, MXCC_STREAM_SIZE, %g3 |
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6: |
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stda %g2, [%o2] ASI_M_MXCC |
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stda %g2, [%o3] ASI_M_MXCC |
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andncc %g3, PAGE_MASK, %g0 |
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bne 6b |
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sub %g3, MXCC_STREAM_SIZE, %g3 |
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9: retl |
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nop |
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viking_flush_cache_page: |
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viking_flush_cache_range: |
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#ifndef CONFIG_SMP |
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ld [%o0 + VMA_VM_MM], %o0 |
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#endif |
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viking_flush_cache_mm: |
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#ifndef CONFIG_SMP |
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ld [%o0 + AOFF_mm_context], %g1 |
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cmp %g1, -1 |
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bne viking_flush_cache_all |
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nop |
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b,a viking_flush_cache_out |
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#endif |
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viking_flush_cache_all: |
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WINDOW_FLUSH(%g4, %g5) |
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viking_flush_cache_out: |
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retl |
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nop |
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viking_flush_tlb_all: |
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mov 0x400, %g1 |
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retl |
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sta %g0, [%g1] ASI_M_FLUSH_PROBE |
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viking_flush_tlb_mm: |
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mov SRMMU_CTX_REG, %g1 |
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ld [%o0 + AOFF_mm_context], %o1 |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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#ifndef CONFIG_SMP |
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cmp %o1, -1 |
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be 1f |
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#endif |
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mov 0x300, %g2 |
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sta %o1, [%g1] ASI_M_MMUREGS |
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sta %g0, [%g2] ASI_M_FLUSH_PROBE |
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retl |
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sta %g5, [%g1] ASI_M_MMUREGS |
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#ifndef CONFIG_SMP |
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1: retl |
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nop |
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#endif |
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viking_flush_tlb_range: |
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ld [%o0 + VMA_VM_MM], %o0 |
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mov SRMMU_CTX_REG, %g1 |
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ld [%o0 + AOFF_mm_context], %o3 |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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#ifndef CONFIG_SMP |
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cmp %o3, -1 |
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be 2f |
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#endif |
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sethi %hi(~((1 << PGDIR_SHIFT) - 1)), %o4 |
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sta %o3, [%g1] ASI_M_MMUREGS |
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and %o1, %o4, %o1 |
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add %o1, 0x200, %o1 |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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1: sub %o1, %o4, %o1 |
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cmp %o1, %o2 |
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blu,a 1b |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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retl |
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sta %g5, [%g1] ASI_M_MMUREGS |
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#ifndef CONFIG_SMP |
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2: retl |
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nop |
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#endif |
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viking_flush_tlb_page: |
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ld [%o0 + VMA_VM_MM], %o0 |
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mov SRMMU_CTX_REG, %g1 |
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ld [%o0 + AOFF_mm_context], %o3 |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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#ifndef CONFIG_SMP |
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cmp %o3, -1 |
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be 1f |
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#endif |
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and %o1, PAGE_MASK, %o1 |
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sta %o3, [%g1] ASI_M_MMUREGS |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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retl |
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sta %g5, [%g1] ASI_M_MMUREGS |
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#ifndef CONFIG_SMP |
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1: retl |
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nop |
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#endif |
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viking_flush_page_to_ram: |
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viking_flush_page_for_dma: |
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viking_flush_sig_insns: |
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retl |
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nop |
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#ifdef CONFIG_SMP |
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.globl sun4dsmp_flush_tlb_all, sun4dsmp_flush_tlb_mm |
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.globl sun4dsmp_flush_tlb_range, sun4dsmp_flush_tlb_page |
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sun4dsmp_flush_tlb_all: |
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sethi %hi(sun4dsmp_flush_tlb_spin), %g3 |
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1: ldstub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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tst %g5 |
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bne 2f |
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mov 0x400, %g1 |
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sta %g0, [%g1] ASI_M_FLUSH_PROBE |
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retl |
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stb %g0, [%g3 + %lo(sun4dsmp_flush_tlb_spin)] |
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2: tst %g5 |
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bne,a 2b |
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ldub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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b,a 1b |
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sun4dsmp_flush_tlb_mm: |
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sethi %hi(sun4dsmp_flush_tlb_spin), %g3 |
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1: ldstub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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tst %g5 |
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bne 2f |
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mov SRMMU_CTX_REG, %g1 |
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ld [%o0 + AOFF_mm_context], %o1 |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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mov 0x300, %g2 |
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sta %o1, [%g1] ASI_M_MMUREGS |
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sta %g0, [%g2] ASI_M_FLUSH_PROBE |
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sta %g5, [%g1] ASI_M_MMUREGS |
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retl |
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stb %g0, [%g3 + %lo(sun4dsmp_flush_tlb_spin)] |
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2: tst %g5 |
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bne,a 2b |
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ldub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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b,a 1b |
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sun4dsmp_flush_tlb_range: |
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sethi %hi(sun4dsmp_flush_tlb_spin), %g3 |
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1: ldstub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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tst %g5 |
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bne 3f |
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mov SRMMU_CTX_REG, %g1 |
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ld [%o0 + VMA_VM_MM], %o0 |
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ld [%o0 + AOFF_mm_context], %o3 |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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sethi %hi(~((1 << PGDIR_SHIFT) - 1)), %o4 |
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sta %o3, [%g1] ASI_M_MMUREGS |
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and %o1, %o4, %o1 |
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add %o1, 0x200, %o1 |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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2: sub %o1, %o4, %o1 |
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cmp %o1, %o2 |
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blu,a 2b |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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sta %g5, [%g1] ASI_M_MMUREGS |
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retl |
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stb %g0, [%g3 + %lo(sun4dsmp_flush_tlb_spin)] |
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3: tst %g5 |
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bne,a 3b |
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ldub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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b,a 1b |
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sun4dsmp_flush_tlb_page: |
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sethi %hi(sun4dsmp_flush_tlb_spin), %g3 |
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1: ldstub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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tst %g5 |
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bne 2f |
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mov SRMMU_CTX_REG, %g1 |
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ld [%o0 + VMA_VM_MM], %o0 |
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ld [%o0 + AOFF_mm_context], %o3 |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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and %o1, PAGE_MASK, %o1 |
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sta %o3, [%g1] ASI_M_MMUREGS |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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sta %g5, [%g1] ASI_M_MMUREGS |
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retl |
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stb %g0, [%g3 + %lo(sun4dsmp_flush_tlb_spin)] |
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2: tst %g5 |
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bne,a 2b |
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ldub [%g3 + %lo(sun4dsmp_flush_tlb_spin)], %g5 |
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b,a 1b |
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nop |
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#endif
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