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Diffstat (limited to 'include/linux/memblock.h')
-rw-r--r--include/linux/memblock.h67
1 files changed, 52 insertions, 15 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 9497ec7c77ea..cc4b01972060 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -21,7 +21,11 @@
#define INIT_PHYSMEM_REGIONS 4
/* Definition of memblock flags. */
-#define MEMBLOCK_HOTPLUG 0x1 /* hotpluggable region */
+enum {
+ MEMBLOCK_NONE = 0x0, /* No special request */
+ MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */
+ MEMBLOCK_MIRROR = 0x2, /* mirrored region */
+};
struct memblock_region {
phys_addr_t base;
@@ -61,7 +65,7 @@ extern bool movable_node_enabled;
phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align,
phys_addr_t start, phys_addr_t end,
- int nid);
+ int nid, ulong flags);
phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
phys_addr_t size, phys_addr_t align);
phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr);
@@ -75,6 +79,8 @@ int memblock_reserve(phys_addr_t base, phys_addr_t size);
void memblock_trim_memory(phys_addr_t align);
int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
+int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
+ulong choose_memblock_flags(void);
/* Low level functions */
int memblock_add_range(struct memblock_type *type,
@@ -85,14 +91,19 @@ int memblock_remove_range(struct memblock_type *type,
phys_addr_t base,
phys_addr_t size);
-void __next_mem_range(u64 *idx, int nid, struct memblock_type *type_a,
+void __next_mem_range(u64 *idx, int nid, ulong flags,
+ struct memblock_type *type_a,
struct memblock_type *type_b, phys_addr_t *out_start,
phys_addr_t *out_end, int *out_nid);
-void __next_mem_range_rev(u64 *idx, int nid, struct memblock_type *type_a,
+void __next_mem_range_rev(u64 *idx, int nid, ulong flags,
+ struct memblock_type *type_a,
struct memblock_type *type_b, phys_addr_t *out_start,
phys_addr_t *out_end, int *out_nid);
+void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start,
+ phys_addr_t *out_end);
+
/**
* for_each_mem_range - iterate through memblock areas from type_a and not
* included in type_b. Or just type_a if type_b is NULL.
@@ -100,16 +111,17 @@ void __next_mem_range_rev(u64 *idx, int nid, struct memblock_type *type_a,
* @type_a: ptr to memblock_type to iterate
* @type_b: ptr to memblock_type which excludes from the iteration
* @nid: node selector, %NUMA_NO_NODE for all nodes
+ * @flags: pick from blocks based on memory attributes
* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
* @p_nid: ptr to int for nid of the range, can be %NULL
*/
-#define for_each_mem_range(i, type_a, type_b, nid, \
+#define for_each_mem_range(i, type_a, type_b, nid, flags, \
p_start, p_end, p_nid) \
- for (i = 0, __next_mem_range(&i, nid, type_a, type_b, \
+ for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \
p_start, p_end, p_nid); \
i != (u64)ULLONG_MAX; \
- __next_mem_range(&i, nid, type_a, type_b, \
+ __next_mem_range(&i, nid, flags, type_a, type_b, \
p_start, p_end, p_nid))
/**
@@ -119,19 +131,35 @@ void __next_mem_range_rev(u64 *idx, int nid, struct memblock_type *type_a,
* @type_a: ptr to memblock_type to iterate
* @type_b: ptr to memblock_type which excludes from the iteration
* @nid: node selector, %NUMA_NO_NODE for all nodes
+ * @flags: pick from blocks based on memory attributes
* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
* @p_nid: ptr to int for nid of the range, can be %NULL
*/
-#define for_each_mem_range_rev(i, type_a, type_b, nid, \
+#define for_each_mem_range_rev(i, type_a, type_b, nid, flags, \
p_start, p_end, p_nid) \
for (i = (u64)ULLONG_MAX, \
- __next_mem_range_rev(&i, nid, type_a, type_b, \
+ __next_mem_range_rev(&i, nid, flags, type_a, type_b,\
p_start, p_end, p_nid); \
i != (u64)ULLONG_MAX; \
- __next_mem_range_rev(&i, nid, type_a, type_b, \
+ __next_mem_range_rev(&i, nid, flags, type_a, type_b, \
p_start, p_end, p_nid))
+/**
+ * for_each_reserved_mem_region - iterate over all reserved memblock areas
+ * @i: u64 used as loop variable
+ * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
+ * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
+ *
+ * Walks over reserved areas of memblock. Available as soon as memblock
+ * is initialized.
+ */
+#define for_each_reserved_mem_region(i, p_start, p_end) \
+ for (i = 0UL, \
+ __next_reserved_mem_region(&i, p_start, p_end); \
+ i != (u64)ULLONG_MAX; \
+ __next_reserved_mem_region(&i, p_start, p_end))
+
#ifdef CONFIG_MOVABLE_NODE
static inline bool memblock_is_hotpluggable(struct memblock_region *m)
{
@@ -153,6 +181,11 @@ static inline bool movable_node_is_enabled(void)
}
#endif
+static inline bool memblock_is_mirror(struct memblock_region *m)
+{
+ return m->flags & MEMBLOCK_MIRROR;
+}
+
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
unsigned long *end_pfn);
@@ -181,13 +214,14 @@ void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
* @p_nid: ptr to int for nid of the range, can be %NULL
+ * @flags: pick from blocks based on memory attributes
*
* Walks over free (memory && !reserved) areas of memblock. Available as
* soon as memblock is initialized.
*/
-#define for_each_free_mem_range(i, nid, p_start, p_end, p_nid) \
+#define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \
for_each_mem_range(i, &memblock.memory, &memblock.reserved, \
- nid, p_start, p_end, p_nid)
+ nid, flags, p_start, p_end, p_nid)
/**
* for_each_free_mem_range_reverse - rev-iterate through free memblock areas
@@ -196,13 +230,15 @@ void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
* @p_nid: ptr to int for nid of the range, can be %NULL
+ * @flags: pick from blocks based on memory attributes
*
* Walks over free (memory && !reserved) areas of memblock in reverse
* order. Available as soon as memblock is initialized.
*/
-#define for_each_free_mem_range_reverse(i, nid, p_start, p_end, p_nid) \
+#define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \
+ p_nid) \
for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \
- nid, p_start, p_end, p_nid)
+ nid, flags, p_start, p_end, p_nid)
static inline void memblock_set_region_flags(struct memblock_region *r,
unsigned long flags)
@@ -273,7 +309,8 @@ static inline bool memblock_bottom_up(void) { return false; }
#define MEMBLOCK_ALLOC_ACCESSIBLE 0
phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
- phys_addr_t start, phys_addr_t end);
+ phys_addr_t start, phys_addr_t end,
+ ulong flags);
phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
phys_addr_t max_addr);
phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,