xnu-1699.22.81.tar.gz

[apple/xnu.git] / iokit / Kernel / IOMapper.cpp

diff --git a/iokit/Kernel/IOMapper.cpp b/iokit/Kernel/IOMapper.cpp
index f9be2591553576e46775a756bb992a8aa6572bb2..23b0db10e25b21e54afd1e93f5b65a83fe473d4c 100644 (file)
--- a/iokit/Kernel/IOMapper.cpp
+++ b/iokit/Kernel/IOMapper.cpp
@@ -1,34 +1,45 @@
 /*
  * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
  *
 /*
  * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_OSREFERENCE_LICENSE_HEADER_END@

  */
 #include <IOKit/IOLib.h>
 #include <IOKit/IOMapper.h>
  */
 #include <IOKit/IOLib.h>
 #include <IOKit/IOMapper.h>

+#include <IOKit/IODMACommand.h>

 #include <libkern/c++/OSData.h>
 
 #include <libkern/c++/OSData.h>
 

+__BEGIN_DECLS
+extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
+__END_DECLS
+

 #define super IOService
 OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
 
 #define super IOService
 OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
 

-OSMetaClassDefineReservedUnused(IOMapper, 0);
-OSMetaClassDefineReservedUnused(IOMapper, 1);
-OSMetaClassDefineReservedUnused(IOMapper, 2);
+OSMetaClassDefineReservedUsed(IOMapper, 0);
+OSMetaClassDefineReservedUsed(IOMapper, 1);
+OSMetaClassDefineReservedUsed(IOMapper, 2);

 OSMetaClassDefineReservedUnused(IOMapper, 3);
 OSMetaClassDefineReservedUnused(IOMapper, 4);
 OSMetaClassDefineReservedUnused(IOMapper, 5);
 OSMetaClassDefineReservedUnused(IOMapper, 3);
 OSMetaClassDefineReservedUnused(IOMapper, 4);
 OSMetaClassDefineReservedUnused(IOMapper, 5);


@@ -61,6 +72,7 @@ static IOMapperLock sMapperLock;
 
 bool IOMapper::start(IOService *provider)
 {
 
 bool IOMapper::start(IOService *provider)
 {

+    OSObject * obj;

     if (!super::start(provider))
         return false;
 
     if (!super::start(provider))
         return false;
 


@@ -74,6 +86,14 @@ bool IOMapper::start(IOService *provider)
         sMapperLock.unlock();
     }
 
         sMapperLock.unlock();
     }
 

+    if (provider)
+    {
+       obj = provider->getProperty("iommu-id");
+       if (!obj)
+           obj = provider->getProperty("AAPL,phandle");
+       if (obj)
+           setProperty(gIOMapperIDKey, obj);
+    }

     return true;
 }
 
     return true;
 }
 


@@ -111,11 +131,48 @@ void IOMapper::setMapperRequired(bool hasMapper)
 void IOMapper::waitForSystemMapper()
 {
     sMapperLock.lock();
 void IOMapper::waitForSystemMapper()
 {
     sMapperLock.lock();

-    while ((vm_address_t) IOMapper::gSystem & kWaitMask)
+    while ((uintptr_t) IOMapper::gSystem & kWaitMask)

         sMapperLock.sleep(&IOMapper::gSystem);
     sMapperLock.unlock();
 }
 
         sMapperLock.sleep(&IOMapper::gSystem);
     sMapperLock.unlock();
 }
 

+IOMapper * IOMapper::copyMapperForDevice(IOService * device)
+{
+    OSObject * obj;
+    IOMapper * mapper;
+    OSDictionary * matching;
+    
+    obj = device->copyProperty("iommu-parent");
+    if (!obj)
+       return (NULL);
+
+    if ((mapper = OSDynamicCast(IOMapper, obj)))
+       return (mapper);
+
+    matching = IOService::propertyMatching(gIOMapperIDKey, obj);
+    if (matching)
+    {
+       mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
+       matching->release();
+    }
+    if (mapper)
+       device->setProperty("iommu-parent", mapper);
+    else
+       obj->release();
+    
+    return (mapper);
+}
+
+ppnum_t IOMapper::iovmAllocDMACommand(IODMACommand * command, IOItemCount pageCount)
+{
+       return (0);
+}
+
+void IOMapper::iovmFreeDMACommand(IODMACommand * command,
+                                 ppnum_t addr, IOItemCount pageCount)
+{
+}
+

 void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
                             ppnum_t *pageList, IOItemCount pageCount)
 {
 void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
                             ppnum_t *pageList, IOItemCount pageCount)
 {


@@ -130,98 +187,44 @@ void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
         iovmInsert(addr, offset + i, pageList[i].phys_addr);
 }
 
         iovmInsert(addr, offset + i, pageList[i].phys_addr);
 }
 

-struct ARTTableData {
-    void *v;
-    upl_t u[0];
-};
-#define getARTDataP(data) ((ARTTableData *) (data)->getBytesNoCopy())
-
-OSData *
-IOMapper::NewARTTable(IOByteCount size,
-                      void ** virtAddrP, ppnum_t *physAddrP)
+OSData * IOMapper::
+NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)

 {
 {

-    OSData *ret;
-    kern_return_t kr;
-    vm_address_t startUpl;
-    ARTTableData *dataP;
-    unsigned int dataSize;
-    upl_page_info_t *pl = 0;
-
-    // Each UPL can deal with about one meg at the moment
-    size = round_page_32(size);
-    dataSize = sizeof(ARTTableData) + sizeof(upl_t) * size / (1024 * 1024);
-    ret = OSData::withCapacity(dataSize);
-    if (!ret)
-        return 0;
+    if (!virtAddrP || !physAddrP)
+       return 0;

 
 

-    // Append 0's to the buffer, in-other-words reset to nulls.
-    ret->appendBytes(NULL, sizeof(ARTTableData));
-    dataP = getARTDataP(ret);
+    kern_return_t kr;
+    vm_address_t address;

 
 

-    kr = kmem_alloc_contig(kernel_map, &startUpl, size, PAGE_MASK, 0);
+    size = round_page(size);
+    kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0 /*max_pnum*/, 0 /*pnum_mask*/, false);

     if (kr)
         return 0;
 
     if (kr)
         return 0;
 

-    dataP->v = (void *) startUpl;
-
-    do {
-        upl_t iopl;
-        int upl_flags = UPL_SET_INTERNAL | UPL_SET_LITE
-                      | UPL_SET_IO_WIRE | UPL_COPYOUT_FROM;
-        vm_size_t iopl_size = size;
-
-        kr = vm_map_get_upl(kernel_map,
-                            (vm_map_offset_t)startUpl,
-                            &iopl_size,
-                            &iopl,
-                            0,
-                            0,
-                            &upl_flags,
-                            0);
-        if (kr) {
-            panic("IOMapper:vm_map_get_upl returned 0x%x\n");
-            goto bail;
-        }
-
-        if (!ret->appendBytes(&iopl, sizeof(upl_t)))
-            goto bail;
-            
-        startUpl += iopl_size;
-        size -= iopl_size;
-    } while(size);
-
-    // Need to re-establish the dataP as the OSData may have grown.
-    dataP = getARTDataP(ret);
-
-    // Now grab the page entry of the first page and get its phys addr
-    pl = UPL_GET_INTERNAL_PAGE_LIST(dataP->u[0]);
-    *physAddrP = pl->phys_addr;
-    *virtAddrP = dataP->v;
-
-    return ret;
-
-bail:
-    FreeARTTable(ret, size);
-    return 0;
+    ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
+    if (pagenum)
+       *physAddrP = pagenum;
+    else {
+       FreeARTTable((OSData *) address, size);
+       address = 0;
+    }
+
+    *virtAddrP = (void *) address;
+
+    return (OSData *) address;

 }
 
 void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
 {
 }
 
 void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
 {

-    assert(artHandle);
+    vm_address_t address = (vm_address_t) artHandle;

 
 

-    ARTTableData *dataP = getARTDataP(artHandle);
-
-    int numupls = ((artHandle->getLength() - sizeof(*dataP)) / sizeof(upl_t));
-    for (int i = 0; i < numupls; i++) {
-        upl_abort(dataP->u[i], 0);
-        upl_deallocate(dataP->u[i]);
-    }
+    size = round_page(size);
+    kmem_free(kernel_map, address, size);      // Just panic if address is 0
+}

 
 

-    if (dataP->v) {
-        size = round_page_32(size);
-        kmem_free(kernel_map, (vm_address_t) dataP->v, size);
-    }
-    artHandle->release();
+bool IOMapper::getBypassMask(addr64_t *maskP) const
+{
+    return false;

 }
 
 __BEGIN_DECLS
 }
 
 __BEGIN_DECLS