X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..d1ecb069dfe24481e4a83f44cb5217a2b06746d7:/osfmk/i386/phys.c?ds=sidebyside

diff --git a/osfmk/i386/phys.c b/osfmk/i386/phys.c
index 62ccfe5da..c8a2f5206 100644
--- a/osfmk/i386/phys.c
+++ b/osfmk/i386/phys.c
@@ -1,16 +1,19 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
@@ -50,23 +53,51 @@
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
-#include <string.h>
 
+#include <mach_rt.h>
+#include <mach_debug.h>
+#include <mach_ldebug.h>
+
+#include <sys/kdebug.h>
+
+#include <mach/kern_return.h>
+#include <mach/thread_status.h>
 #include <mach/vm_param.h>
-#include <mach/boolean.h>
-#include <vm/pmap.h>
-#include <vm/vm_page.h>
+
+#include <kern/counters.h>
+#include <kern/mach_param.h>
+#include <kern/task.h>
+#include <kern/thread.h>
+#include <kern/sched_prim.h>
 #include <kern/misc_protos.h>
+#include <kern/assert.h>
+#include <kern/spl.h>
+#include <ipc/ipc_port.h>
+#include <vm/vm_kern.h>
+#include <vm/vm_map.h>
+#include <vm/pmap.h>
+
+#include <i386/cpu_data.h>
+#include <i386/cpu_number.h>
+#include <i386/thread.h>
+#include <i386/eflags.h>
+#include <i386/proc_reg.h>
+#include <i386/seg.h>
+#include <i386/tss.h>
+#include <i386/user_ldt.h>
+#include <i386/fpu.h>
+#include <i386/misc_protos.h>
 
 /*
  *	pmap_zero_page zeros the specified (machine independent) page.
  */
 void
 pmap_zero_page(
-	vm_offset_t p)
+       ppnum_t pn)
 {
-	assert(p != vm_page_fictitious_addr);
-	bzero((char *)phystokv(p), PAGE_SIZE);
+	assert(pn != vm_page_fictitious_addr);
+	assert(pn != vm_page_guard_addr);
+	bzero_phys((addr64_t)i386_ptob(pn), PAGE_SIZE);
 }
 
 /*
@@ -75,28 +106,14 @@ pmap_zero_page(
  */
 void
 pmap_zero_part_page(
-	vm_offset_t	p,
+	ppnum_t         pn,
 	vm_offset_t     offset,
 	vm_size_t       len)
 {
-	assert(p != vm_page_fictitious_addr);
+	assert(pn != vm_page_fictitious_addr);
+	assert(pn != vm_page_guard_addr);
 	assert(offset + len <= PAGE_SIZE);
-
-	bzero((char *)phystokv(p) + offset, len);
-}
-
-/*
- *	pmap_copy_page copies the specified (machine independent) pages.
- */
-void
-pmap_copy_page(
-	vm_offset_t src,
-	vm_offset_t dst)
-{
-	assert(src != vm_page_fictitious_addr);
-	assert(dst != vm_page_fictitious_addr);
-
-	memcpy((void *)phystokv(dst), (void *)phystokv(src), PAGE_SIZE);
+	bzero_phys((addr64_t)(i386_ptob(pn) + offset), (uint32_t)len);
 }
 
 /*
@@ -104,19 +121,28 @@ pmap_copy_page(
  */
 void
 pmap_copy_part_page(
-	vm_offset_t	src,
+	ppnum_t 	psrc,
 	vm_offset_t	src_offset,
-	vm_offset_t	dst,
+	ppnum_t	        pdst,
 	vm_offset_t	dst_offset,
 	vm_size_t	len)
 {
-	assert(src != vm_page_fictitious_addr);
-	assert(dst != vm_page_fictitious_addr);
-	assert(((dst & PAGE_MASK) + dst_offset + len) <= PAGE_SIZE);
-	assert(((src & PAGE_MASK) + src_offset + len) <= PAGE_SIZE);
+        pmap_paddr_t src, dst;
+
+	assert(psrc != vm_page_fictitious_addr);
+	assert(pdst != vm_page_fictitious_addr);
+	assert(psrc != vm_page_guard_addr);
+	assert(pdst != vm_page_guard_addr);
+
+	src = i386_ptob(psrc);
+	dst = i386_ptob(pdst);
+
+	assert((((uintptr_t)dst & PAGE_MASK) + dst_offset + len) <= PAGE_SIZE);
+	assert((((uintptr_t)src & PAGE_MASK) + src_offset + len) <= PAGE_SIZE);
 
-        memcpy((void *)(phystokv(dst) + dst_offset),
-	       (void *)(phystokv(src) + src_offset), len);
+	bcopy_phys((addr64_t)src + (src_offset & INTEL_OFFMASK),
+		   (addr64_t)dst + (dst_offset & INTEL_OFFMASK),
+		   len);
 }
 
 /*
@@ -125,16 +151,31 @@ pmap_copy_part_page(
  */
 void
 pmap_copy_part_lpage(
-	vm_offset_t	src,
-	vm_offset_t	dst,
-	vm_offset_t	dst_offset,
-	vm_size_t	len)
+	__unused vm_offset_t 	src,
+	__unused ppnum_t 	pdst,
+	__unused vm_offset_t	dst_offset,
+	__unused vm_size_t	len)
 {
-	assert(src != vm_page_fictitious_addr);
-	assert(dst != vm_page_fictitious_addr);
-	assert(((dst & PAGE_MASK) + dst_offset + len) <= PAGE_SIZE);
+#ifdef __i386__
+        mapwindow_t *map;
+#endif
+
+	assert(pdst != vm_page_fictitious_addr);
+	assert(pdst != vm_page_guard_addr);
+	assert((dst_offset + len) <= PAGE_SIZE);
+
+#ifdef __i386__
+        mp_disable_preemption();
+
+        map = pmap_get_mapwindow(INTEL_PTE_VALID | INTEL_PTE_RW | (i386_ptob(pdst) & PG_FRAME) | 
+                                 INTEL_PTE_REF | INTEL_PTE_MOD);
 
-        memcpy((void *)(phystokv(dst) + dst_offset), (void *)src, len);
+	memcpy((void *) (map->prv_CADDR + (dst_offset & INTEL_OFFMASK)), (void *) src, len);
+
+	pmap_put_mapwindow(map);
+
+	mp_enable_preemption();
+#endif
 }
 
 /*
@@ -143,16 +184,31 @@ pmap_copy_part_lpage(
  */
 void
 pmap_copy_part_rpage(
-	vm_offset_t	src,
-	vm_offset_t	src_offset,
-	vm_offset_t	dst,
-	vm_size_t	len)
+	__unused ppnum_t	        psrc,
+	__unused vm_offset_t	src_offset,
+	__unused vm_offset_t	dst,
+	__unused vm_size_t	len)
 {
-	assert(src != vm_page_fictitious_addr);
-	assert(dst != vm_page_fictitious_addr);
-	assert(((src & PAGE_MASK) + src_offset + len) <= PAGE_SIZE);
+#ifdef __i386__
+        mapwindow_t *map;
+#endif
+
+	assert(psrc != vm_page_fictitious_addr);
+	assert(psrc != vm_page_guard_addr);
+	assert((src_offset + len) <= PAGE_SIZE);
 
-        memcpy((void *)dst, (void *)(phystokv(src) + src_offset), len);
+#ifdef __i386__
+        mp_disable_preemption();
+
+        map = pmap_get_mapwindow(INTEL_PTE_VALID | INTEL_PTE_RW | (i386_ptob(psrc) & PG_FRAME) | 
+                                 INTEL_PTE_REF);
+
+	memcpy((void *) dst, (void *) (map->prv_CADDR + (src_offset & INTEL_OFFMASK)), len);
+
+	pmap_put_mapwindow(map);
+
+	mp_enable_preemption();
+#endif
 }
 
 /*
@@ -160,13 +216,60 @@ pmap_copy_part_rpage(
  *
  *	Convert a kernel virtual address to a physical address
  */
-vm_offset_t
+addr64_t
 kvtophys(
 	vm_offset_t addr)
 {
-	pt_entry_t *pte;
+	pmap_paddr_t pa;
+
+	pa = ((pmap_paddr_t)pmap_find_phys(kernel_pmap, addr)) << INTEL_PGSHIFT;
+	if (pa)
+		pa |= (addr & INTEL_OFFMASK);
+
+	return ((addr64_t)pa);
+}
+
+__private_extern__ void ml_copy_phys(addr64_t src64, addr64_t dst64, vm_size_t bytes) {
+	void *src, *dst;
+
+	mp_disable_preemption();
+#if NCOPY_WINDOWS > 0
+	mapwindow_t *src_map, *dst_map;
+	/* We rely on MTRRs here */
+	src_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | ((pmap_paddr_t)src64 & PG_FRAME) | INTEL_PTE_REF));
+	dst_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | ((pmap_paddr_t)dst64 & PG_FRAME) | INTEL_PTE_REF | INTEL_PTE_MOD));
+	src = (void *) ((uintptr_t)src_map->prv_CADDR | ((uint32_t)src64 & INTEL_OFFMASK));
+	dst = (void *) ((uintptr_t)dst_map->prv_CADDR | ((uint32_t)dst64 & INTEL_OFFMASK));
+#elif defined(__x86_64__)
+	src = PHYSMAP_PTOV(src64);
+	dst = PHYSMAP_PTOV(dst64);
+#endif
+	/* ensure we stay within a page */
+	if (((((uint32_t)src64 & (I386_PGBYTES-1)) + bytes) > I386_PGBYTES) || ((((uint32_t)dst64 & (I386_PGBYTES-1)) + bytes) > I386_PGBYTES) ) {
+	        panic("ml_copy_phys spans pages, src: 0x%llx, dst: 0x%llx", src64, dst64);
+	}
 
-	if ((pte = pmap_pte(kernel_pmap, addr)) == PT_ENTRY_NULL)
-		return 0;
-	return i386_trunc_page(*pte) | (addr & INTEL_OFFMASK);
+	switch (bytes) {
+	case 1:
+		*((uint8_t *) dst) = *((uint8_t *) src);
+		break;
+	case 2:
+		*((uint16_t *) dst) = *((uint16_t *) src);
+		break;
+	case 4:
+		*((uint32_t *) dst) = *((uint32_t *) src);
+		break;
+		/* Should perform two 32-bit reads */
+	case 8:
+		*((uint64_t *) dst) = *((uint64_t *) src);
+		break;
+	default:
+		bcopy(src, dst, bytes);
+		break;
+	}
+#if NCOPY_WINDOWS > 0
+	pmap_put_mapwindow(src_map);
+	pmap_put_mapwindow(dst_map);
+#endif
+	mp_enable_preemption();
 }