patch-1.3.93 linux/arch/sparc/mm/srmmu_mp.S

• Lines: 53
• Date: Sun Apr 21 12:30:31 1996
• Orig file: v1.3.92/linux/arch/sparc/mm/srmmu_mp.S
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.92/linux/arch/sparc/mm/srmmu_mp.S linux/arch/sparc/mm/srmmu_mp.S
@@ -0,0 +1,52 @@
+/* srmmu_mp.S:	Low level invalidates for MP SRMMU modules.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+#include <asm/cprefix.h>
+#include <asm/asi.h>
+
+	/* Protocol is:
+	 *
+	 * %l0 --> %l3  NO TOUCH
+	 * %l7          NO TOUCH
+	 * %l6		return address - 0x8
+	 * %l4, %l5     what we can use
+	 */
+
+	.globl	C_LABEL(hyper_invalidate_low)
+C_LABEL(hyper_invalidate_low):
+	/* First the on-chip cache. */
+	set	C_LABEL(hyper_cache_size), %l5
+	ld	[%l5], %l5
+1:
+	subcc	%l5, 32, %l5
+	bne	1b
+	 sta	%g0, [%l5] ASI_M_FLUSH_CTX
+
+	/* Now the on-chip ICACHE. */
+	sta	%g0, [%g0] ASI_M_FLUSH_IWHOLE
+
+	/* Flush the TLB and return. */
+	mov	0x400, %l4
+	sta	%g0, [%l4] ASI_M_FLUSH_PROBE
+
+	jmpl	%l6 + 0x8, %g0
+	 nop
+
+	.globl	C_LABEL(viking_invalidate_low)
+C_LABEL(viking_invalidate_low):
+	/* Flash clear the I/D caches. */
+	sta	%g0, [%g0] ASI_M_IC_FLCLEAR
+	sta	%g0, [%g0] ASI_M_DC_FLCLEAR
+
+	/* Flush the TLB and return. */
+	mov	0x400, %l4
+	sta	%g0, [%l4] ASI_M_FLUSH_PROBE
+
+	jmpl	%l6 + 0x8, %g0
+	 nop
+
+	/* XXX Write the Cypress when I get access to
+	 * XXX some modules, poke mossip real hard until
+	 * XXX he takes care of the Nubis upgrade.
+	 */