Changeset 4136 in vbox for trunk/src/VBox/Runtime/include/internal

Timestamp:

Aug 14, 2007 1:59:36 AM (17 years ago)

Author:

vboxsync

Message:

Added RTR0MemObjAllocPhysNC. Changed the two APIs taking ring-3 addresses to use RTR3PTR.

File:

• trunk/src/VBox/Runtime/include/internal/memobj.h (modified) (6 diffs)

trunk/src/VBox/Runtime/include/internal/memobj.h

@@ -54 +54 @@
     RTR0MEMOBJTYPE_LOCK,
     /** RTR0MemObjAllocPhys, RTR0MemObjEnterPhys.
+     * This memory is physical memory, page aligned, contiguous and doesn't need to have a mapping. */
+    RTR0MEMOBJTYPE_PHYS,
+    /** RTR0MemObjAllocPhysNC.
      * This memory is physical memory, page aligned and doesn't need to have a mapping. */
-    RTR0MEMOBJTYPE_PHYS,
+    RTR0MEMOBJTYPE_PHYS_NC,
     /** RTR0MemObjReserveKernel, RTR0MemObjReserveUser.
      * This memory is page aligned and has no backing. */
@@ -161 +164 @@
         struct
         {
-            /** The base address of the physical memory that's being mapped. */
+            /** The base address of the physical memory. */
             RTHCPHYS    PhysBase;
-            /** If set this object was created by RTR0MemPhysAlloc, otherwise by RTR0MemPhysEnter. */
+            /** If set this object was created by RTR0MemPhysAlloc, otherwise it was
+             * created by RTR0MemPhysEnter. */
             bool        fAllocated;
         } Phys;
+
+        /** RTR0MEMTYPE_PHYS_NC. */
+        struct
+        {
+            unsigned iDummy;
+        } PhysNC;
 
         /** RTR0MEMOBJTYPE_RES_VIRT */
@@ -274 +284 @@
 
 /**
- * Allocates page aligned physical memory without (necessarily) any kernel mapping.
+ * Allocates contiguous page aligned physical memory without (necessarily) any kernel mapping.
  *
  * @returns IPRT status code.
@@ -283 +293 @@
  */
 int rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest);
+
+/**
+ * Allocates non-contiguous page aligned physical memory without (necessarily) any kernel mapping.
+ *
+ * @returns IPRT status code.
+ * @param   ppMem           Where to store the ring-0 memory object handle.
+ * @param   cb              Number of bytes to allocate, page aligned.
+ * @param   PhysHighest     The highest permittable address (inclusive).
+ *                          NIL_RTHCPHYS if any address is acceptable.
+ */
+int rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest);
 
 /**
@@ -310 +331 @@
  * @returns IPRT status code.
  * @param   ppMem           Where to store the ring-0 memory object handle.
- * @param   pvFixed         Requested address. (void *)-1 means any address. This matches uAlignment if specified.
+ * @param   R3PtrFixed      Requested address. (RTR3PTR)-1 means any address. This matches uAlignment if specified.
  * @param   cb              The number of bytes to reserve, page aligned.
  * @param   uAlignment      The alignment of the reserved memory; PAGE_SIZE, _2M or _4M.
  * @param   R0Process       The process to reserve the memory in.
  */
-int rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process);
+int rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process);
 
 /**
@@ -335 +356 @@
  * @param   ppMem           Where to store the ring-0 memory object handle of the mapping object.
  * @param   pMemToMap       The object to be map.
- * @param   pvFixed         Requested address. (void *)-1 means any address. This matches uAlignment if specified.
+ * @param   R3PtrFixed      Requested address. (RTR3PTR)-1 means any address. This matches uAlignment if specified.
  * @param   uAlignment      The alignment of the reserved memory; PAGE_SIZE, _2M or _4M.
  * @param   fProt           Combination of RTMEM_PROT_* flags (except RTMEM_PROT_NONE).
  * @param   R0Process       The process to map the memory into.
  */
-int rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, PRTR0MEMOBJINTERNAL pMemToMap, void *pvFixed, size_t uAlignment, unsigned fProt, RTR0PROCESS R0Process);
+int rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, PRTR0MEMOBJINTERNAL pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment, unsigned fProt, RTR0PROCESS R0Process);
 
 /**