diff options
Diffstat (limited to 'src/include/memrange.h')
| -rw-r--r-- | src/include/memrange.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/include/memrange.h b/src/include/memrange.h index 0d20236d61..f8fa033cee 100644 --- a/src/include/memrange.h +++ b/src/include/memrange.h @@ -16,6 +16,7 @@ #define MEMRANGE_H_ #include <device/resource.h> +#include <stdbool.h> /* A memranges structure consists of a list of range_entry(s). The structure * is exposed so that a memranges can be used on the stack if needed. */ @@ -166,4 +167,18 @@ void memranges_update_tag(struct memranges *ranges, unsigned long old_tag, /* Returns next entry after the provided entry. NULL if r is last. */ struct range_entry *memranges_next_entry(struct memranges *ranges, const struct range_entry *r); + +/* Steals memory from the available list in given ranges as per the constraints: + * limit = Upper bound for the memory range to steal. + * size = Requested size for the stolen memory. + * align = Alignment requirements for the starting address of the stolen memory. + * (Alignment must be a power of 2). + * tag = Use a range that matches the given tag. + * + * If the constraints can be satisfied, this function creates a hole in the memrange, + * writes the base address of that hole to stolen_base and returns true. Otherwise it returns + * false. */ +bool memranges_steal(struct memranges *ranges, resource_t limit, resource_t size, size_t align, + unsigned long tag, resource_t *stolen_base); + #endif /* MEMRANGE_H_ */ |