]> git.saurik.com Git - apple/xnu.git/blobdiff - iokit/Kernel/IOMapper.cpp
xnu-2422.115.4.tar.gz
[apple/xnu.git] / iokit / Kernel / IOMapper.cpp
index 56d412bf3e7c02c30f8363a3def1890dd8308265..294e1382205fced90097059ddf53f1bfa51d9f47 100644 (file)
@@ -27,9 +27,9 @@
  */
 #include <IOKit/IOLib.h>
 #include <IOKit/IOMapper.h>
+#include <IOKit/IODMACommand.h>
 #include <libkern/c++/OSData.h>
-
-#include "IOCopyMapper.h"
+#include <libkern/OSDebug.h>
 
 __BEGIN_DECLS
 extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
@@ -39,9 +39,9 @@ __END_DECLS
 OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
 
 OSMetaClassDefineReservedUsed(IOMapper, 0);
-OSMetaClassDefineReservedUnused(IOMapper, 1);
-OSMetaClassDefineReservedUnused(IOMapper, 2);
-OSMetaClassDefineReservedUnused(IOMapper, 3);
+OSMetaClassDefineReservedUsed(IOMapper, 1);
+OSMetaClassDefineReservedUsed(IOMapper, 2);
+OSMetaClassDefineReservedUsed(IOMapper, 3);
 OSMetaClassDefineReservedUnused(IOMapper, 4);
 OSMetaClassDefineReservedUnused(IOMapper, 5);
 OSMetaClassDefineReservedUnused(IOMapper, 6);
@@ -73,6 +73,7 @@ static IOMapperLock sMapperLock;
 
 bool IOMapper::start(IOService *provider)
 {
+    OSObject * obj;
     if (!super::start(provider))
         return false;
 
@@ -86,6 +87,14 @@ bool IOMapper::start(IOService *provider)
         sMapperLock.unlock();
     }
 
+    if (provider)
+    {
+       obj = provider->getProperty("iommu-id");
+       if (!obj)
+           obj = provider->getProperty("AAPL,phandle");
+       if (obj)
+           setProperty(gIOMapperIDKey, obj);
+    }
     return true;
 }
 
@@ -123,11 +132,81 @@ void IOMapper::setMapperRequired(bool hasMapper)
 void IOMapper::waitForSystemMapper()
 {
     sMapperLock.lock();
-    while ((vm_address_t) IOMapper::gSystem & kWaitMask)
+    while ((uintptr_t) IOMapper::gSystem & kWaitMask)
+    {
+               OSReportWithBacktrace("waitForSystemMapper");
         sMapperLock.sleep(&IOMapper::gSystem);
+    }
     sMapperLock.unlock();
 }
 
+IOMapper * IOMapper::copyMapperForDevice(IOService * device)
+{
+    return copyMapperForDeviceWithIndex(device, 0);
+}
+
+IOMapper * IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
+{
+    OSData *data;
+    OSObject * obj;
+    IOMapper * mapper = NULL;
+    OSDictionary * matching;
+    
+    obj = device->copyProperty("iommu-parent");
+    if (!obj)
+        return (NULL);
+
+    if ((mapper = OSDynamicCast(IOMapper, obj)))
+        return (mapper);
+
+    if ((data = OSDynamicCast(OSData, obj)))
+    {
+        if (index >= data->getLength() / sizeof(UInt32))
+            goto done;
+        
+        data = OSData::withBytesNoCopy((UInt32 *)data->getBytesNoCopy() + index, sizeof(UInt32));
+        if (!data)
+            goto done;
+
+        matching = IOService::propertyMatching(gIOMapperIDKey, data);
+        data->release();
+    }
+    else
+        matching = IOService::propertyMatching(gIOMapperIDKey, obj);
+
+    if (matching)
+    {
+        mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
+            matching->release();
+    }
+
+done:
+    if (obj)
+            obj->release();
+    return (mapper);
+}
+
+ppnum_t IOMapper::iovmAllocDMACommand(IODMACommand * command, IOItemCount pageCount)
+{
+    return (0);
+}
+
+void IOMapper::iovmFreeDMACommand(IODMACommand * command,
+                                 ppnum_t addr, IOItemCount pageCount)
+{
+}
+
+ppnum_t IOMapper::iovmMapMemory(
+                         OSObject                    * memory,   // dma command or iomd
+                         ppnum_t                       offsetPage,
+                         ppnum_t                       pageCount,
+                         uint32_t                      options,
+                         upl_page_info_t             * pageList,
+                         const IODMAMapSpecification * mapSpecification)
+{
+    return (0);
+}
+
 void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
                             ppnum_t *pageList, IOItemCount pageCount)
 {
@@ -151,8 +230,8 @@ NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
     kern_return_t kr;
     vm_address_t address;
 
-    size = round_page_32(size);
-    kr = kmem_alloc_contig(kernel_map, &address, 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;
 
@@ -173,7 +252,7 @@ void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
 {
     vm_address_t address = (vm_address_t) artHandle;
 
-    size = round_page_32(size);
+    size = round_page(size);
     kmem_free(kernel_map, address, size);      // Just panic if address is 0
 }
 
@@ -204,6 +283,7 @@ void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
 ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
 {
     if (IOMapper::gSystem) {
+               if (!addr) panic("!addr");
         IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
         return addr + offset;
     }
@@ -343,24 +423,4 @@ void IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
         ml_phys_write_double((vm_offset_t) address, value);
 }
 
-mach_vm_address_t IOMallocPhysical(mach_vm_size_t size, mach_vm_address_t mask)
-{
-    mach_vm_address_t address = 0;
-    if (gIOCopyMapper)
-    {
-       address = ptoa_64(gIOCopyMapper->iovmAlloc(atop_64(round_page(size))));
-    }
-
-    return (address);
-}
-
-void IOFreePhysical(mach_vm_address_t address, mach_vm_size_t size)
-{
-    if (gIOCopyMapper)
-    {
-       gIOCopyMapper->iovmFree(atop_64(address), atop_64(round_page(size)));
-    }
-}
-
-
 __END_DECLS