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/* $Id: tsunami.S,v 1.1 1997/05/03 05:09:09 davem Exp $
* tsunami.S: High speed MicroSparc-I mmu/cache operations.
*
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*/
#include <asm/ptrace.h>
#include <asm/psr.h>
#include <asm/asi.h>
#include <asm/page.h>
#include <asm/pgtsrmmu.h>
#define WINDOW_FLUSH(tmp1, tmp2) \
mov 0, tmp1; \
98: ld [%g6 + AOFF_task_tss + AOFF_thread_uwinmask], tmp2; \
orcc %g0, tmp2, %g0; \
add tmp1, 1, tmp1; \
bne 98b; \
save %sp, -64, %sp; \
99: subcc tmp1, 1, tmp1; \
bne 99b; \
restore %g0, %g0, %g0;
.text
.align 4
.globl tsunami_flush_cache_all, tsunami_flush_cache_mm
.globl tsunami_flush_cache_range, tsunami_flush_cache_page
.globl tsunami_flush_page_to_ram, tsunami_flush_page_for_dma
.globl tsunami_flush_sig_insns, tsunami_flush_chunk
.globl tsunami_flush_tlb_all, tsunami_flush_tlb_mm
.globl tsunami_flush_tlb_range, tsunami_flush_tlb_page
/* Sliiick... */
tsunami_flush_cache_page:
ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
tsunami_flush_cache_mm:
tsunami_flush_cache_range:
ld [%o0 + AOFF_mm_context], %g2
#ifndef __SMP__
cmp %g2, -1
be tsunami_flush_cache_out
#endif
tsunami_flush_cache_all:
WINDOW_FLUSH(%g4, %g5)
tsunami_flush_page_for_dma:
sta %g0, [%g0] ASI_M_DC_FLCLEAR
sta %g0, [%g0] ASI_M_IC_FLCLEAR
tsunami_flush_cache_out:
tsunami_flush_page_to_ram:
tsunami_flush_chunk:
retl
nop
tsunami_flush_sig_insns:
flush %o1
retl
flush %o1 + 4
/* More slick stuff... */
tsunami_flush_tlb_mm:
tsunami_flush_tlb_range:
#ifndef __SMP__
ld [%o0 + AOFF_mm_context], %g2
cmp %g2, -1
be tsunami_flush_tlb_out
#endif
tsunami_flush_tlb_all:
mov 0x400, %o1
sta %g0, [%o1] ASI_M_FLUSH_PROBE
tsunami_flush_tlb_out:
retl
nop
/* This one can be done in a fine grained manner... */
tsunami_flush_tlb_page:
ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
andn %o1, (PAGE_SIZE - 1), %o1
#ifndef __SMP__
cmp %o3, -1
be tsunami_flush_tlb_page_out
#endif
lda [%g1] ASI_M_MMUREGS, %g5
sta %o3, [%g1] ASI_M_MMUREGS
sta %g0, [%o1] ASI_M_FLUSH_PROBE
tsunami_flush_tlb_page_out:
retl
sta %g5, [%g1] ASI_M_MMUREGS
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