small batch early bottling hppa64 port

matured in mighty ukrainian oak for 23 months

1 files changed, 117 insertions, 0 deletions

diff --git a/sys/arch/hppa64/include/pmap.h b/sys/arch/hppa64/include/pmap.h
new file mode 100644
index 00000000000..1014076b7e2
--- /dev/null
+++ b/sys/arch/hppa64/include/pmap.h
@@ -0,0 +1,117 @@
+/*	$OpenBSD: pmap.h,v 1.1 2005/04/01 10:40:48 mickey Exp $	*/
+
+/*
+ * Copyright (c) 2005 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _MACHINE_PMAP_H_
+#define _MACHINE_PMAP_H_
+
+#include <machine/pte.h>
+#include <uvm/uvm_pglist.h>
+#include <uvm/uvm_object.h>
+
+struct pmap {
+	simple_lock_data_t pm_lock;
+	int		pm_refcount;
+	struct vm_page	*pm_ptphint;
+	struct pglist	pm_pglist;
+	volatile u_int32_t *pm_pdir;	/* page dir (read-only after create) */
+	pa_space_t	pm_space;	/* space id (read-only after create) */
+
+	struct pmap_statistics	pm_stats;
+};
+typedef struct pmap *pmap_t;
+
+struct pv_entry {			/* locked by its list's pvh_lock */
+	struct pv_entry	*pv_next;
+	struct pmap	*pv_pmap;	/* the pmap */
+	vaddr_t		pv_va;		/* the virtual address */
+	struct vm_page	*pv_ptp;	/* the vm_page of the PTP */
+};
+
+#ifdef	_KERNEL
+
+extern struct pmap kernel_pmap_store;
+
+/*
+ * pool quickmaps
+ */
+#define	pmap_map_direct(pg)	((vaddr_t)VM_PAGE_TO_PHYS(pg))
+#define	pmap_unmap_direct(va) PHYS_TO_VM_PAGE((paddr_t)(va))
+#define	__HAVE_PMAP_DIRECT
+
+/*
+ * according to the parisc manual aliased va's should be
+ * different by high 12 bits only.
+ */
+#define	PMAP_PREFER(o,h)	do {					\
+	vaddr_t pmap_prefer_hint;					\
+	pmap_prefer_hint = (*(h) & HPPA_PGAMASK) | ((o) & HPPA_PGAOFF);	\
+	if (pmap_prefer_hint < *(h))					\
+		pmap_prefer_hint += HPPA_PGALIAS;			\
+	*(h) = pmap_prefer_hint;					\
+} while(0)
+
+#define	PMAP_GROWKERNEL
+#define	PMAP_STEAL_MEMORY
+
+#define	pmap_sid2pid(s)			(((s) + 1) << 1)
+#define pmap_kernel()			(&kernel_pmap_store)
+#define	pmap_resident_count(pmap)	((pmap)->pm_stats.resident_count)
+#define	pmap_update(pm)			(void)(pm)
+#define pmap_copy(dpmap,spmap,da,len,sa)
+
+#define pmap_clear_modify(pg)	pmap_changebit(pg, 0, PTE_DIRTY)
+#define pmap_clear_reference(pg) pmap_changebit(pg, PTE_REFTRAP, 0)
+#define pmap_is_modified(pg)	pmap_testbit(pg, PTE_DIRTY)
+#define pmap_is_referenced(pg)	pmap_testbit(pg, PTE_REFTRAP)
+#define pmap_phys_address(ppn)	((ppn) << PAGE_SHIFT)
+
+#define pmap_proc_iflush(p,va,len)	/* nothing */
+#define pmap_unuse_final(p)		/* nothing */
+
+void pmap_bootstrap(vaddr_t);
+boolean_t pmap_changebit(struct vm_page *, pt_entry_t, pt_entry_t);
+boolean_t pmap_testbit(struct vm_page *, pt_entry_t);
+void pmap_write_protect(struct pmap *, vaddr_t, vaddr_t, vm_prot_t);
+void pmap_remove(struct pmap *pmap, vaddr_t sva, vaddr_t eva);
+void pmap_page_remove(struct vm_page *pg);
+
+static __inline void
+pmap_page_protect(struct vm_page *pg, vm_prot_t prot)
+{
+	if ((prot & UVM_PROT_WRITE) == 0) {
+		if (prot & (UVM_PROT_RX))
+			pmap_changebit(pg, 0, PTE_WRITE);
+		else
+			pmap_page_remove(pg);
+	}
+}
+
+static __inline void
+pmap_protect(struct pmap *pmap, vaddr_t sva, vaddr_t eva, vm_prot_t prot)
+{
+	if ((prot & UVM_PROT_WRITE) == 0) {
+		if (prot & (UVM_PROT_RX))
+			pmap_write_protect(pmap, sva, eva, prot);
+		else
+			pmap_remove(pmap, sva, eva);
+	}
+}
+
+#endif /* _KERNEL */
+#endif /* _MACHINE_PMAP_H_ */