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132 lines
3.1 KiB
132 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* tsunami.S: High speed MicroSparc-I mmu/cache operations. |
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* |
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* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) |
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*/ |
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#include <asm/ptrace.h> |
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#include <asm/asm-offsets.h> |
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#include <asm/psr.h> |
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#include <asm/asi.h> |
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#include <asm/page.h> |
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#include <asm/pgtsrmmu.h> |
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.text |
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.align 4 |
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.globl tsunami_flush_cache_all, tsunami_flush_cache_mm |
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.globl tsunami_flush_cache_range, tsunami_flush_cache_page |
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.globl tsunami_flush_page_to_ram, tsunami_flush_page_for_dma |
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.globl tsunami_flush_sig_insns |
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.globl tsunami_flush_tlb_all, tsunami_flush_tlb_mm |
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.globl tsunami_flush_tlb_range, tsunami_flush_tlb_page |
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/* Sliiick... */ |
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tsunami_flush_cache_page: |
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tsunami_flush_cache_range: |
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ld [%o0 + VMA_VM_MM], %o0 |
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tsunami_flush_cache_mm: |
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ld [%o0 + AOFF_mm_context], %g2 |
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cmp %g2, -1 |
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be tsunami_flush_cache_out |
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tsunami_flush_cache_all: |
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WINDOW_FLUSH(%g4, %g5) |
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tsunami_flush_page_for_dma: |
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sta %g0, [%g0] ASI_M_IC_FLCLEAR |
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sta %g0, [%g0] ASI_M_DC_FLCLEAR |
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tsunami_flush_cache_out: |
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tsunami_flush_page_to_ram: |
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retl |
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nop |
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tsunami_flush_sig_insns: |
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flush %o1 |
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retl |
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flush %o1 + 4 |
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/* More slick stuff... */ |
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tsunami_flush_tlb_range: |
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ld [%o0 + VMA_VM_MM], %o0 |
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tsunami_flush_tlb_mm: |
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ld [%o0 + AOFF_mm_context], %g2 |
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cmp %g2, -1 |
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be tsunami_flush_tlb_out |
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tsunami_flush_tlb_all: |
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mov 0x400, %o1 |
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sta %g0, [%o1] ASI_M_FLUSH_PROBE |
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nop |
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nop |
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nop |
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nop |
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nop |
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tsunami_flush_tlb_out: |
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retl |
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nop |
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/* This one can be done in a fine grained manner... */ |
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tsunami_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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andn %o1, (PAGE_SIZE - 1), %o1 |
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cmp %o3, -1 |
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be tsunami_flush_tlb_page_out |
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lda [%g1] ASI_M_MMUREGS, %g5 |
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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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nop |
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nop |
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nop |
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nop |
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nop |
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tsunami_flush_tlb_page_out: |
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retl |
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sta %g5, [%g1] ASI_M_MMUREGS |
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#define MIRROR_BLOCK(dst, src, offset, t0, t1, t2, t3) \ |
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ldd [src + offset + 0x18], t0; \ |
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std t0, [dst + offset + 0x18]; \ |
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ldd [src + offset + 0x10], t2; \ |
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std t2, [dst + offset + 0x10]; \ |
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ldd [src + offset + 0x08], t0; \ |
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std t0, [dst + offset + 0x08]; \ |
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ldd [src + offset + 0x00], t2; \ |
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std t2, [dst + offset + 0x00]; |
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tsunami_copy_1page: |
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/* NOTE: This routine has to be shorter than 70insns --jj */ |
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or %g0, (PAGE_SIZE >> 8), %g1 |
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1: |
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MIRROR_BLOCK(%o0, %o1, 0x00, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0x20, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0x40, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0x60, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0x80, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0xa0, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0xc0, %o2, %o3, %o4, %o5) |
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MIRROR_BLOCK(%o0, %o1, 0xe0, %o2, %o3, %o4, %o5) |
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subcc %g1, 1, %g1 |
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add %o0, 0x100, %o0 |
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bne 1b |
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add %o1, 0x100, %o1 |
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.globl tsunami_setup_blockops |
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tsunami_setup_blockops: |
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sethi %hi(__copy_1page), %o0 |
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or %o0, %lo(__copy_1page), %o0 |
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sethi %hi(tsunami_copy_1page), %o1 |
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or %o1, %lo(tsunami_copy_1page), %o1 |
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sethi %hi(tsunami_setup_blockops), %o2 |
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or %o2, %lo(tsunami_setup_blockops), %o2 |
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ld [%o1], %o4 |
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1: add %o1, 4, %o1 |
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st %o4, [%o0] |
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add %o0, 4, %o0 |
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cmp %o1, %o2 |
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bne 1b |
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ld [%o1], %o4 |
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sta %g0, [%g0] ASI_M_IC_FLCLEAR |
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sta %g0, [%g0] ASI_M_DC_FLCLEAR |
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retl |
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nop
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