X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..5d5c5d0d5b79ade9a973d55186ffda2638ba2b6e:/bsd/dev/i386/mem.c
diff --git a/bsd/dev/i386/mem.c b/bsd/dev/i386/mem.c
index 233b59643..257435321 100644
--- a/bsd/dev/i386/mem.c
+++ b/bsd/dev/i386/mem.c
@@ -1,26 +1,31 @@
/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
- * 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
+ * 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. 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
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
*/
/*-
* Copyright (c) 1988 University of Utah.
@@ -73,52 +78,74 @@
#include <sys/param.h>
#include <sys/dir.h>
#include <sys/proc.h>
-#include <sys/buf.h>
#include <sys/systm.h>
#include <sys/vm.h>
-#include <sys/uio.h>
+#include <sys/uio_internal.h>
#include <sys/malloc.h>
#include <mach/vm_types.h>
#include <mach/vm_param.h>
#include <vm/vm_kern.h> /* for kernel_map */
+extern addr64_t kvtophys(vm_offset_t va);
+extern boolean_t kernacc(off_t, size_t );
+extern int setup_kmem;
+
static caddr_t devzerobuf;
-mmread(dev, uio)
- dev_t dev;
- struct uio *uio;
+int mmread(dev_t dev, struct uio *uio);
+int mmwrite(dev_t dev, struct uio *uio);
+int mmioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p);
+int mmrw(dev_t dev, struct uio *uio, enum uio_rw rw);
+
+int
+mmread(dev_t dev, struct uio *uio)
{
return (mmrw(dev, uio, UIO_READ));
}
-mmwrite(dev, uio)
- dev_t dev;
- struct uio *uio;
+int
+mmwrite(dev_t dev, struct uio *uio)
{
return (mmrw(dev, uio, UIO_WRITE));
}
-mmrw(dev, uio, rw)
- dev_t dev;
- struct uio *uio;
- enum uio_rw rw;
+int
+mmioctl(dev_t dev, u_long cmd, __unused caddr_t data,
+ __unused int flag, __unused struct proc *p)
+{
+ int minnum = minor(dev);
+
+ if ((setup_kmem == 0) && ((minnum == 0) || (minnum == 1)))
+ return(EINVAL);
+
+ switch (cmd) {
+ case FIONBIO:
+ case FIOASYNC:
+ /* OK to do nothing: we always return immediately */
+ break;
+ default:
+ return ENODEV;
+ }
+
+ return (0);
+}
+
+int
+mmrw(dev_t dev, struct uio *uio, enum uio_rw rw)
{
register int o;
register u_int c, v;
- register struct iovec *iov;
int error = 0;
vm_offset_t where;
- int spl;
vm_size_t size;
- extern boolean_t kernacc(off_t, size_t );
- while (uio->uio_resid > 0 && error == 0) {
- iov = uio->uio_iov;
- if (iov->iov_len == 0) {
- uio->uio_iov++;
+
+ while (uio_resid(uio) > 0 && error == 0) {
+ if (uio_iov_len(uio) == 0) {
+ uio_next_iov(uio);
uio->uio_iovcnt--;
if (uio->uio_iovcnt < 0)
panic("mmrw");
@@ -128,6 +155,9 @@ mmrw(dev, uio, rw)
/* minor device 0 is physical memory */
case 0:
+ if (setup_kmem == 0)
+ return(ENODEV);
+
v = trunc_page(uio->uio_offset);
if (uio->uio_offset >= mem_size)
goto fault;
@@ -138,28 +168,32 @@ mmrw(dev, uio, rw)
goto fault;
}
o = uio->uio_offset - v;
- c = min(PAGE_SIZE - o, (u_int)iov->iov_len);
+ // LP64todo - fix this!
+ c = min(PAGE_SIZE - o, (u_int)uio_iov_len(uio));
error = uiomove((caddr_t) (where + o), c, uio);
kmem_free(kernel_map, where, PAGE_SIZE);
continue;
/* minor device 1 is kernel memory */
case 1:
+ if (setup_kmem == 0)
+ return(ENODEV);
/* Do some sanity checking */
if (((vm_address_t)uio->uio_offset >= VM_MAX_KERNEL_ADDRESS) ||
((vm_address_t)uio->uio_offset <= VM_MIN_KERNEL_ADDRESS))
goto fault;
- c = iov->iov_len;
+ c = uio_iov_len(uio);
if (!kernacc(uio->uio_offset, c))
goto fault;
- error = uiomove((caddr_t)uio->uio_offset, (int)c, uio);
+ error = uiomove((caddr_t)(uintptr_t)uio->uio_offset,
+ (int)c, uio);
continue;
/* minor device 2 is EOF/RATHOLE */
case 2:
if (rw == UIO_READ)
return (0);
- c = iov->iov_len;
+ c = uio_iov_len(uio);
break;
case 3:
if(devzerobuf == NULL) {
@@ -167,10 +201,11 @@ mmrw(dev, uio, rw)
bzero(devzerobuf, PAGE_SIZE);
}
if(uio->uio_rw == UIO_WRITE) {
- c = iov->iov_len;
+ c = uio_iov_len(uio);
break;
}
- c = min(iov->iov_len, PAGE_SIZE);
+ // LP64todo - fix this!
+ c = min(uio_iov_len(uio), PAGE_SIZE);
error = uiomove(devzerobuf, (int)c, uio);
continue;
default:
@@ -180,10 +215,10 @@ mmrw(dev, uio, rw)
if (error)
break;
- iov->iov_base += c;
- iov->iov_len -= c;
+ uio_iov_base_add(uio, c);
+ uio_iov_len_add(uio, -((int)c));
uio->uio_offset += c;
- uio->uio_resid -= c;
+ uio_setresid(uio, (uio_resid(uio) - c));
}
return (error);
fault:
@@ -204,7 +239,7 @@ kernacc(
end = start + len;
while (base < end) {
- if(kvtophys((vm_offset_t)base) == NULL)
+ if(kvtophys((vm_offset_t)base) == 0ULL)
return(FALSE);
base += page_size;
}