lib: memory_alloc: Support 64-bit physical addresses
The current memory allocation code does not support physical
addresses above 32-bits, meaning that LPAE is not supported.
Change the types of the code internally to support 64-bit
physical addresses. Full 64-bit virtual addresses may not be
fully supported so this code will still need an update when
that happens.
Change-Id: I0c4a7b76784981ffcd7f4776d51e05f3592bb7b8
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
diff --git a/include/linux/memory_alloc.h b/include/linux/memory_alloc.h
index b649451..8097949 100644
--- a/include/linux/memory_alloc.h
+++ b/include/linux/memory_alloc.h
@@ -20,7 +20,7 @@
struct mem_pool {
struct mutex pool_mutex;
struct gen_pool *gpool;
- unsigned long paddr;
+ phys_addr_t paddr;
unsigned long size;
unsigned long free;
unsigned int id;
@@ -28,29 +28,34 @@
struct alloc {
struct rb_node rb_node;
- void *vaddr;
- unsigned long paddr;
+ /*
+ * The physical address may be used for lookup in the tree so the
+ * 'virtual address' needs to be able to accomodate larger physical
+ * addresses.
+ */
+ phys_addr_t vaddr;
+ phys_addr_t paddr;
struct mem_pool *mpool;
unsigned long len;
void *caller;
};
-struct mem_pool *initialize_memory_pool(unsigned long start,
+struct mem_pool *initialize_memory_pool(phys_addr_t start,
unsigned long size, int mem_type);
void *allocate_contiguous_memory(unsigned long size,
int mem_type, unsigned long align, int cached);
-unsigned long _allocate_contiguous_memory_nomap(unsigned long size,
+phys_addr_t _allocate_contiguous_memory_nomap(unsigned long size,
int mem_type, unsigned long align, void *caller);
-unsigned long allocate_contiguous_memory_nomap(unsigned long size,
+phys_addr_t allocate_contiguous_memory_nomap(unsigned long size,
int mem_type, unsigned long align);
void free_contiguous_memory(void *addr);
-void free_contiguous_memory_by_paddr(unsigned long paddr);
+void free_contiguous_memory_by_paddr(phys_addr_t paddr);
-unsigned long memory_pool_node_paddr(void *vaddr);
+phys_addr_t memory_pool_node_paddr(void *vaddr);
unsigned long memory_pool_node_len(void *vaddr);