Make copypage() and zeropage() per-cpu function pointers, and use a

different version on 88110, which does load allocate of
to-be-completely-overwritten cache lines.

4 files changed, 73 insertions, 10 deletions

diff --git a/sys/arch/m88k/include/cpu.h b/sys/arch/m88k/include/cpu.h
index aecac92f45b..e14afe7f851 100644
--- a/sys/arch/m88k/include/cpu.h
+++ b/sys/arch/m88k/include/cpu.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.h,v 1.51 2010/12/23 20:05:08 miod Exp $ */
+/*	$OpenBSD: cpu.h,v 1.52 2011/01/05 22:16:14 miod Exp $ */
 /*
  * Copyright (c) 1996 Nivas Madhur
  * Copyright (c) 1992, 1993
@@ -106,6 +106,12 @@ struct cpu_info {
 			    (uint32_t psr, __cpu_simple_lock_t *lock, uint csr);
 
 	/*
+	 * Other processor-dependent routines
+	 */
+	void		(*ci_zeropage)(vaddr_t);
+	void		(*ci_copypage)(vaddr_t, vaddr_t);
+
+	/*
 	 * The following fields are used differently depending on
 	 * the processor type.  Think of them as an anonymous union
 	 * of two anonymous structs.
diff --git a/sys/arch/m88k/m88k/m8820x_machdep.c b/sys/arch/m88k/m88k/m8820x_machdep.c
index a7e6a6fe082..7e8f58a925d 100644
--- a/sys/arch/m88k/m88k/m8820x_machdep.c
+++ b/sys/arch/m88k/m88k/m8820x_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: m8820x_machdep.c,v 1.46 2011/01/05 22:14:29 miod Exp $	*/
+/*	$OpenBSD: m8820x_machdep.c,v 1.47 2011/01/05 22:16:16 miod Exp $	*/
 /*
  * Copyright (c) 2004, 2007, 2010, 2011, Miodrag Vallat.
  *
@@ -84,6 +84,9 @@
 #include <machine/m8820x.h>
 #include <machine/psl.h>
 
+extern	void m8820x_zeropage(vaddr_t);
+extern	void m8820x_copypage(vaddr_t, vaddr_t);
+
 cpuid_t	m8820x_init(void);
 void	m8820x_cpu_configuration_print(int);
 void	m8820x_shutdown(void);
@@ -481,6 +484,9 @@ m8820x_initialize_cpu(cpuid_t cpu)
 	 */
 	apr &= ~CACHE_INH;
 	m8820x_cmmu_set_reg(CMMU_SAPR, apr, MODE_VAL, cpu, INST_CMMU);
+
+	ci->ci_zeropage = m8820x_zeropage;
+	ci->ci_copypage = m8820x_copypage;
 }
 
 /*
diff --git a/sys/arch/m88k/m88k/pmap.c b/sys/arch/m88k/m88k/pmap.c
index f5990b034c2..927ae6fb2b9 100644
--- a/sys/arch/m88k/m88k/pmap.c
+++ b/sys/arch/m88k/m88k/pmap.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pmap.c,v 1.60 2011/01/05 22:14:29 miod Exp $	*/
+/*	$OpenBSD: pmap.c,v 1.61 2011/01/05 22:16:16 miod Exp $	*/
 
 /*
  * Copyright (c) 2001-2004, 2010, Miodrag Vallat.
@@ -1417,7 +1417,6 @@ pmap_copy_page(struct vm_page *srcpg, struct vm_page *dstpg)
 {
 	paddr_t src = VM_PAGE_TO_PHYS(srcpg);
 	paddr_t dst = VM_PAGE_TO_PHYS(dstpg);
-	extern void copypage(vaddr_t, vaddr_t);
 
 	DPRINTF(CD_COPY, ("pmap_copy_page(%p,%p) pa %p %p\n",
 	    srcpg, dstpg, src, dst));
@@ -1426,7 +1425,7 @@ pmap_copy_page(struct vm_page *srcpg, struct vm_page *dstpg)
 	    kernel_apr_cmode != userland_apr_cmode)
 		cmmu_dcache_wb(cpu_number(), src, PAGE_SIZE);
 #endif
-	copypage((vaddr_t)src, (vaddr_t)dst);
+	curcpu()->ci_copypage((vaddr_t)src, (vaddr_t)dst);
 }
 
 /*
@@ -1437,10 +1436,9 @@ void
 pmap_zero_page(struct vm_page *pg)
 {
 	paddr_t pa = VM_PAGE_TO_PHYS(pg);
-	extern void zeropage(vaddr_t);
 
 	DPRINTF(CD_ZERO, ("pmap_zero_page(%p) pa %p\n", pg, pa));
-	zeropage((vaddr_t)pa);
+	curcpu()->ci_zeropage((vaddr_t)pa);
 }
 
 /*
diff --git a/sys/arch/m88k/m88k/subr.S b/sys/arch/m88k/m88k/subr.S
index 98c5733911b..bca43ad73a5 100644
--- a/sys/arch/m88k/m88k/subr.S
+++ b/sys/arch/m88k/m88k/subr.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: subr.S,v 1.19 2010/12/23 20:05:08 miod Exp $	*/
+/* $OpenBSD: subr.S,v 1.20 2011/01/05 22:16:16 miod Exp $	*/
 /*
  * Mach Operating System
  * Copyright (c) 1993-1992 Carnegie Mellon University
@@ -1103,12 +1103,15 @@ GLOBAL(esigcode)
 /*
  * Helper functions for pmap_copy_page() and pmap_zero_page().
  */
+
+#ifdef M88100
+
 /*
  * void copypage(vaddr_t src, vaddr_t dst);
  *
  * This copies PAGE_SIZE bytes from src to dst in 32 byte chunks.
  */
-ENTRY(copypage)
+ENTRY(m8820x_copypage)
 	addu	r12, r2, PAGE_SIZE
 1:
 	ld.d	r4,  r2, 0x00
@@ -1130,7 +1133,7 @@ ENTRY(copypage)
  *
  * This zeroes PAGE_SIZE bytes from src to dst in 64 byte chunks.
  */
-ENTRY(zeropage)
+ENTRY(m8820x_zeropage)
 	addu	r12, r2, PAGE_SIZE
 	or	r3,  r1, r0
 	or	r1,  r0, r0
@@ -1148,6 +1151,56 @@ ENTRY(zeropage)
 	bb1	ne,  r4, 1b
 	jmp	r3
 
+#endif	/* M88100 */
+
+#ifdef M88110
+
+/*
+ * void copypage(vaddr_t src, vaddr_t dst);
+ *
+ * This copies PAGE_SIZE bytes from src to dst in 32 byte chunks (one
+ * cache line).
+ */
+ENTRY(m88110_copypage)
+	addu	r12, r2, PAGE_SIZE
+1:
+	ld.h	r0,  r2, 0x00	# load allocate
+	ld.d	r4,  r2, 0x00
+	ld.d	r6,  r2, 0x08
+	st.d	r4,  r3, 0x00
+	ld.d	r8,  r2, 0x10
+	st.d	r6,  r3, 0x08
+	ld.d	r10, r2, 0x18
+	st.d	r8,  r3, 0x10
+	addu	r2,  r2, 0x20
+	st.d	r10, r3, 0x18
+	cmp	r4,  r2, r12
+	addu	r3,  r3, 0x20
+	bb1	ne,  r4, 1b
+	jmp	r1
+
+/*
+ * void zeropage(vaddr_t dst);
+ *
+ * This zeroes PAGE_SIZE bytes from src to dst in 32 byte chunks.
+ */
+ENTRY(m88110_zeropage)
+	addu	r12, r2, PAGE_SIZE
+	or	r3,  r1, r0
+	or	r1,  r0, r0
+1:
+	ld.h	r0,  r2, 0x00	# load allocate
+	st.d	r0,  r2, 0x00
+	st.d	r0,  r2, 0x08
+	st.d	r0,  r2, 0x10
+	st.d	r0,  r2, 0x18
+	addu	r2,  r2, 0x20
+	cmp	r4,  r2, r12
+	bb1	ne,  r4, 1b
+	jmp	r3
+
+#endif	/* M88110 */
+
 /*
  * PSR initialization code, invoked from locore on every processor startup.
  */