[haiku-commits] r35815 - haiku/trunk/src/system/boot/platform/bios_ia32
- From: ingo_weinhold@xxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Thu, 11 Mar 2010 18:42:00 +0100 (CET)
Author: bonefish
Date: 2010-03-11 18:42:00 +0100 (Thu, 11 Mar 2010)
New Revision: 35815
Changeset: http://dev.haiku-os.org/changeset/35815/haiku
Modified:
haiku/trunk/src/system/boot/platform/bios_ia32/mmu.cpp
haiku/trunk/src/system/boot/platform/bios_ia32/mmu.h
Log:
Added mmu_allocate_physical(), which allocates a specified physical memory
range.
Modified: haiku/trunk/src/system/boot/platform/bios_ia32/mmu.cpp
===================================================================
--- haiku/trunk/src/system/boot/platform/bios_ia32/mmu.cpp 2010-03-11
17:13:12 UTC (rev 35814)
+++ haiku/trunk/src/system/boot/platform/bios_ia32/mmu.cpp 2010-03-11
17:42:00 UTC (rev 35815)
@@ -444,6 +444,23 @@
}
+/*! Allocates the given physical range.
+ \return \c true, if the range could be allocated, \c false otherwise.
+*/
+bool
+mmu_allocate_physical(addr_t base, size_t size)
+{
+ addr_t foundBase;
+ if (!get_free_address_range(gKernelArgs.physical_allocated_range,
+ gKernelArgs.num_physical_allocated_ranges,
sNextPhysicalAddress,
+ size, &foundBase)) {
+ return B_BAD_VALUE;
+ }
+
+ return insert_physical_allocated_range(base, size) == B_OK;
+}
+
+
/*! This will unmap the allocated chunk of memory from the virtual
address space. It might not actually free memory (as its implementation
is very simple), but it might.
Modified: haiku/trunk/src/system/boot/platform/bios_ia32/mmu.h
===================================================================
--- haiku/trunk/src/system/boot/platform/bios_ia32/mmu.h 2010-03-11
17:13:12 UTC (rev 35814)
+++ haiku/trunk/src/system/boot/platform/bios_ia32/mmu.h 2010-03-11
17:42:00 UTC (rev 35815)
@@ -20,6 +20,7 @@
extern void mmu_init_for_kernel(void);
extern addr_t mmu_map_physical_memory(addr_t physicalAddress, size_t size,
uint32 flags);
extern void *mmu_allocate(void *virtualAddress, size_t size);
+extern bool mmu_allocate_physical(addr_t base, size_t size);
extern void mmu_free(void *virtualAddress, size_t size);
#ifdef __cplusplus
Other related posts:
- » [haiku-commits] r35815 - haiku/trunk/src/system/boot/platform/bios_ia32 - ingo_weinhold
