Module Name: src
Committed By: thorpej
Date: Tue Jan 9 07:21:48 UTC 2024
Added Files:
src/sys/arch/m68k/m68k: mmu_subr.s
Log Message:
Remove duplicated / slightly-tweaked loadustp() (load user segment table)
routines from all of the m68k ports using the shared pmap. Instead, in
pmap_init(), set up a function pointer to the appropriate mmu_load_urp*()
function in mmu_subr.s.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/arch/m68k/m68k/mmu_subr.s
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/arch/m68k/m68k/mmu_subr.s
diff -u /dev/null src/sys/arch/m68k/m68k/mmu_subr.s:1.1
--- /dev/null Tue Jan 9 07:21:48 2024
+++ src/sys/arch/m68k/m68k/mmu_subr.s Tue Jan 9 07:21:48 2024
@@ -0,0 +1,141 @@
+/* $NetBSD: mmu_subr.s,v 1.1 2024/01/09 07:21:48 thorpej Exp $ */
+
+/*-
+ * Copyright (c) 2023 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 1980, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: Utah $Hdr: locore.s 1.66 92/12/22$
+ *
+ * @(#)locore.s 8.6 (Berkeley) 5/27/94
+ */
+
+/*
+ * void mmu_load_urp(paddr_t urp);
+ *
+ * Load the user root pointer into the MMU. A version is provided
+ * for each supported MMU type.
+ *
+ * We keep the HP MMU versions of these routines here, as well,
+ * even though they'll only ever be used on the hp300.
+ */
+
+#include "opt_m68k_arch.h"
+
+#include <machine/asm.h>
+
+#include "assym.h"
+
+ .file "mmu_subr.s"
+ .text
+
+#if defined(M68K_MMU_MOTOROLA)
+#if defined(M68020) || defined(M68030)
+ .data
+/*
+ * protorp is set up to initialize the Supervisor Root Pointer.
+ * pmap_init() will re-configure it to load the CPU Root Pointer.
+ */
+GLOBAL(protorp)
+ .long MMU51_CRP_BITS,0 | prototype CPU root pointer
+
+ .text
+ENTRY_NOPROFILE(mmu_load_urp51)
+ movl %sp@(4),%d0 | get root table PA argument
+ lea _C_LABEL(protorp),%a0 | CRP prototype
+ movl %d0,%a0@(4) | set new root table PA
+ pflusha | flush ATC
+ pmove %a0@,%crp | load CRP register
+ movl #CACHE_CLR,%d0
+ movc %d0,%cacr | invalidate caches
+ rts
+#endif /* M68020 || M68030 */
+
+#if defined(M68040) || defined(M68060)
+#if defined(M68060)
+ENTRY_NOPROFILE(mmu_load_urp60)
+ movc %cacr,%d0
+ orl #IC60_CUBC,%d0 | clear user branch cache entries
+ movc %d0,%cacr
+ /* FALLTHROUGH */
+#endif /* M68060 */
+ENTRY_NOPROFILE(mmu_load_urp40)
+ movl %sp@(4),%d0 | get root table PA argument
+ .word 0xf518 |pflusha | flush ATC
+ .long 0x4e7b0806 |movc %d0,%urp | load the URP register
+ rts
+#endif /* M68040 || M68060 */
+#endif /* M68K_MMU_MOTOROLA */
+
+#if defined(M68K_MMU_HP)
+ENTRY_NOPROFILE(mmu_load_urp20hp)
+ movl #CACHE_CLR,%d0
+ movc %d0,%cacr | invalidate caches
+ movl _C_LABEL(MMUbase),%a0
+ movl %a0@(MMUTBINVAL),%d1 | invalidate TLB
+ tstl _C_LABEL(ectype) | have an external VAC?
+ jle 1f | no, skip
+ andl #~MMU_CEN,%a0@(MMUCMD) | toggle cache enable
+ orl #MMU_CEN,%a0@(MMUCMD) | to clear data cache
+1: movl %sp@(4),%d0 | get root table PA argument
+ moveq #PGSHIFT,%d1
+ lsrl %d1,%d0 | convert to page frame number
+ movl %d0,%a0@(MMUUSTP) | load to USTP register
+ rts
+#endif /* M68K_MMU_HP */
