pc, pc64: use 64-bit physical addresses for vmap() and upaalloc()

sys/src/9/pc/fns.h

@@ -192,10 +192,10 @@ int	tas(void*);
 uvlong	tscticks(uvlong*);
 ulong	umballoc(ulong, ulong, ulong);
 void	umbfree(ulong, ulong);
-ulong	upaalloc(ulong, ulong, ulong);
+uvlong	upaalloc(uvlong, ulong, ulong);
-void	upafree(ulong, ulong);
+void	upafree(uvlong, ulong);
 void	vectortable(void);
-void*	vmap(ulong, int);
+void*	vmap(uvlong, int);
 int	vmapsync(ulong);
 void	vmxprocrestore(Proc *);
 void	vmxshutdown(void);

sys/src/9/pc/memory.c

@@ -244,14 +244,14 @@ rsdsearch(void)
  * does not map the physical address into virtual memory.
  * Call vmap to do that.
  */
-ulong
+uvlong
-upaalloc(ulong pa, ulong size, ulong align)
+upaalloc(uvlong pa, ulong size, ulong align)
 {
-	return (ulong)memmapalloc(pa == -1UL ? -1ULL : (uvlong)pa, size, align, MemUPA);
+	return memmapalloc(pa, size, align, MemUPA);
 }
 
 void
-upafree(ulong pa, ulong size)
+upafree(uvlong pa, ulong size)
 {
 	memmapfree(pa, size, MemUPA);
 }

sys/src/9/pc/mmu.c

@@ -71,7 +71,6 @@ mmuinit(void)
 {
 	ulong x, *p;
 	ushort ptr[3];
-	vlong v;
 
 	if(0) print("vpt=%#.8ux vpd=%#p kmap=%#.8ux\n",
 		VPT, vpd, KMAP);
@@ -537,11 +536,16 @@ static void pdbunmap(ulong*, ulong, int);
  * Add a device mapping to the vmap range.
  */
 void*
-vmap(ulong pa, int size)
+vmap(uvlong pa, int size)
 {
 	int osize;
 	ulong o, va;
 	
+	if(pa < BY2PG || size <= 0 || ((pa+size) >> 32) != 0 || size > VMAPSIZE){
+		print("vmap pa=%llux size=%d pc=%#p\n", pa, size, getcallerpc(&pa));
+		return nil;
+	}
+
 	/*
 	 * might be asking for less than a page.
 	 */
@@ -549,17 +553,12 @@ vmap(ulong pa, int size)
 	o = pa & (BY2PG-1);
 	pa -= o;
 	size += o;
-
 	size = ROUND(size, BY2PG);
-	if(pa == 0){
-		print("vmap pa=0 pc=%#p\n", getcallerpc(&pa));
-		return nil;
-	}
 	ilock(&vmaplock);
 	if((va = vmapalloc(size)) == 0 
 	|| pdbmap(MACHP(0)->pdb, pa|PTEUNCACHED|PTEWRITE, va, size) < 0){
 		iunlock(&vmaplock);
-		return 0;
+		return nil;
 	}
 	iunlock(&vmaplock);
 	/* avoid trap on local processor

sys/src/9/pc64/fns.h

@@ -191,12 +191,12 @@ int	tas(void*);
 uvlong	tscticks(uvlong*);
 ulong	umballoc(ulong, ulong, ulong);
 void	umbfree(ulong, ulong);
-ulong	upaalloc(ulong, ulong, ulong);
+uvlong	upaalloc(uvlong, ulong, ulong);
-void	upafree(ulong, ulong);
+void	upafree(uvlong, ulong);
 void	vectortable(void);
 void	vmxprocrestore(Proc *);
 void	vmxshutdown(void);
-void*	vmap(uintptr, int);
+void*	vmap(uvlong, int);
 void	vunmap(void*, int);
 void	wbinvd(void);
 void	writeconf(void);

sys/src/9/pc64/mmu.c

@@ -579,14 +579,17 @@ kunmap(KMap *k)
  * synchronization is being done.
  */
 void*
-vmap(uintptr pa, int size)
+vmap(uvlong pa, int size)
 {
 	uintptr va;
 	int o;
 
-	if(pa+size > VMAPSIZE)
+	if(pa < BY2PG || size <= 0 || -pa < size || pa+size > VMAPSIZE){
-		return 0;
+		print("vmap pa=%llux size=%d pc=%#p\n", pa, size, getcallerpc(&pa));
+		return nil;
+	}
 	va = pa+VMAP;
+
 	/*
 	 * might be asking for less than a page.
 	 */