patch-2.1.38 linux/arch/sparc/mm/tsunami.S

• Lines: 91
• Date: Wed May 14 15:01:20 1997
• Orig file: v2.1.37/linux/arch/sparc/mm/tsunami.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.37/linux/arch/sparc/mm/tsunami.S linux/arch/sparc/mm/tsunami.S
@@ -0,0 +1,90 @@
+/* $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