From: Ahmad Fatoum <[email protected]> Now that we have the resource_iter_* functions, add helpers for conveniently traversing requested regions and the gaps between them.
Signed-off-by: Ahmad Fatoum <[email protected]> --- include/linux/ioport.h | 18 ++++++++++++++++++ include/memory.h | 6 ++++++ 2 files changed, 24 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 1b5dfdcb373d..1d8686d51e81 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -272,5 +272,23 @@ struct resource *resource_iter_last(struct resource *current, struct resource *g struct resource *resource_iter_prev(struct resource *current, struct resource *gap); struct resource *resource_iter_next(struct resource *current, struct resource *gap); +/** + * for_each_resource_region - Iterate over child resources and gaps between them + * @parent: parent resource + * @region: pointer to child resource or gap + */ +#define for_each_resource_region(parent, region) \ + for (struct resource gap, *region = resource_iter_first((parent), &gap); \ + region; region = resource_iter_next(region, &gap)) + +/** + * for_each_resource_region_reverse - Reverse iterate over child resources and gaps between them + * @parent: parent resource + * @region: pointer to child resource or gap + */ +#define for_each_resource_region_reverse(parent, region) \ + for (struct resource gap, *region = resource_iter_last((parent), &gap); \ + region; region = resource_iter_prev(region, &gap)) + #endif /* __ASSEMBLY__ */ #endif /* _LINUX_IOPORT_H */ diff --git a/include/memory.h b/include/memory.h index dea76dd2b1f7..65614b97ec8b 100644 --- a/include/memory.h +++ b/include/memory.h @@ -30,6 +30,12 @@ int barebox_add_memory_bank(const char *name, resource_size_t start, list_for_each_entry(rsv, &(mem)->res->children, sibling) \ if (is_reserved_resource(rsv)) +#define for_each_memory_bank_region(bank, region) \ + for_each_resource_region((bank)->res, region) + +#define for_each_memory_bank_region_reverse(bank, region) \ + for_each_resource_region_reverse((bank)->res, region) + struct resource *__request_sdram_region(const char *name, resource_size_t start, resource_size_t size); -- 2.47.3
