Flesh out the sparc64 port considerably. This contains:

- mostly complete kernel pmap support, and tested but currently turned
  off userland pmap support
- low level assembly language trap, context switching and support code
- fully implemented atomic.h and supporting cpufunc.h
- some support for kernel debugging with ddb
- various header tweaks and filling out of machine dependent structures

1 files changed, 175 insertions, 0 deletions

diff --git a/sys/sparc64/include/pv.h b/sys/sparc64/include/pv.h
new file mode 100644
index 0000000..e36d3f8
--- /dev/null
+++ b/sys/sparc64/include/pv.h
@@ -0,0 +1,175 @@
+/*-
+ * Copyright (c) 2001 Jake Burkholder.
+ * All rights reserved.
+ *
+ * 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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_MACHINE_PV_H_
+#define	_MACHINE_PV_H_
+
+#define	PV_LOCK()
+#define	PV_UNLOCK()
+
+#define	ST_TTE			offsetof(struct stte, st_tte)
+#define	ST_NEXT			offsetof(struct stte, st_next)
+#define	ST_PREV			offsetof(struct stte, st_prev)
+
+#define	TTE_DATA		offsetof(struct tte, tte_data)
+#define	TTE_TAG			offsetof(struct tte, tte_tag)
+
+#define	PV_OFF(pa)		((vm_offset_t)(pa) - avail_start)
+#define	PV_INDEX(pa)		(PV_OFF(pa) >> PAGE_SHIFT)
+#define	PV_SHIFT		(3)
+
+#define	casxp(pa, exp, src) \
+	casxa((vm_offset_t *)pa, exp, src, ASI_PHYS_USE_EC)
+#define	ldxp(pa)		ldxa(pa, ASI_PHYS_USE_EC)
+#define	stxp(pa, val)		stxa(pa, ASI_PHYS_USE_EC, val)
+
+extern vm_offset_t pv_table;
+extern u_long pv_generation;
+
+static __inline vm_offset_t
+pv_lookup(vm_offset_t pa)
+{
+	return (pv_table + (PV_INDEX(pa) << PV_SHIFT));
+}
+
+static __inline vm_offset_t
+pv_get_first(vm_offset_t pvh)
+{
+	return (ldxp(pvh));
+}
+
+static __inline vm_offset_t
+pv_get_next(vm_offset_t pstp)
+{
+	return (ldxp(pstp + ST_NEXT));
+}
+
+static __inline vm_offset_t
+pv_get_prev(vm_offset_t pstp)
+{
+	return (ldxp(pstp + ST_PREV));
+}
+
+static __inline u_long
+pv_get_tte_data(vm_offset_t pstp)
+{
+	return (ldxp(pstp + ST_TTE + TTE_DATA));
+}
+
+static __inline u_long
+pv_get_tte_tag(vm_offset_t pstp)
+{
+	return (ldxp(pstp + ST_TTE + TTE_TAG));
+}
+
+#define	pv_get_tte(pstp) ({ \
+	struct tte __tte; \
+	__tte.tte_tag = pv_get_tte_tag(pstp); \
+	__tte.tte_data = pv_get_tte_data(pstp); \
+	__tte; \
+})
+
+static __inline void
+pv_set_first(vm_offset_t pvh, vm_offset_t first)
+{
+	stxp(pvh, first);
+}
+
+static __inline void
+pv_set_next(vm_offset_t pstp, vm_offset_t next)
+{
+	stxp(pstp + ST_NEXT, next);
+}
+
+static __inline void
+pv_set_prev(vm_offset_t pstp, vm_offset_t prev)
+{
+	stxp(pstp + ST_PREV, prev);
+}
+
+static __inline void
+pv_remove_phys(vm_offset_t pstp)
+{
+	vm_offset_t pv_next;
+	vm_offset_t pv_prev;
+
+	pv_next = pv_get_next(pstp);
+	pv_prev = pv_get_prev(pstp);
+	if (pv_next != 0)
+		pv_set_prev(pv_next, pv_prev);
+	stxp(pv_prev, pv_next);
+}
+
+static __inline void
+pv_bit_clear(vm_offset_t pstp, u_long bits)
+{
+	vm_offset_t dp;
+	vm_offset_t d1;
+	vm_offset_t d2;
+	vm_offset_t d3;
+
+	dp = pstp + ST_TTE + TTE_DATA;
+	for (d1 = ldxp(dp);; d1 = d3) {
+		d2 = d1 & ~bits;
+		d3 = casxp(dp, d1, d2);
+		if (d1 == d3)
+			break;
+	}
+}
+
+static __inline void
+pv_bit_set(vm_offset_t pstp, u_long bits)
+{
+	vm_offset_t dp;
+	vm_offset_t d1;
+	vm_offset_t d2;
+	vm_offset_t d3;
+
+	dp = pstp + ST_TTE + TTE_DATA;
+	for (d1 = ldxp(dp);; d1 = d3) {
+		d2 = d1 | bits;
+		d3 = casxp(dp, d1, d2);
+		if (d1 == d3)
+			break;
+	}
+}
+
+static __inline int
+pv_bit_test(vm_offset_t pstp, u_long bits)
+{
+	vm_offset_t dp;
+
+	dp = pstp + ST_TTE + TTE_DATA;
+	return ((casxp(dp, 0, 0) & bits) != 0);
+}
+
+void pv_dump(vm_offset_t pvh);
+void pv_insert(pmap_t pm, vm_offset_t pa, vm_offset_t va, struct stte *stp);
+void pv_remove_virt(struct stte *stp);
+
+#endif /* !_MACHINE_PV_H_ */