From 2b57691ce0dcb06d6d8677393f76006c363d5856 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Sun, 19 Jun 2016 23:16:45 -0700 Subject: commonlib/region: Add helpers for dynamic initialization of region dev This allows initialization of runtime region devices and xlate region devices where all parameters cannot be statically determined. BUG=chrome-os-partner:54563 Change-Id: Ia6e1b695fed3bbfa08598d1593e650fc1465d41f Signed-off-by: Furquan Shaikh Reviewed-on: https://review.coreboot.org/15267 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/commonlib/include/commonlib/region.h | 11 +++++++++++ src/commonlib/region.c | 23 +++++++++++++++++++++++ 2 files changed, 34 insertions(+) (limited to 'src') diff --git a/src/commonlib/include/commonlib/region.h b/src/commonlib/include/commonlib/region.h index 4e32b09be0..634132a695 100644 --- a/src/commonlib/include/commonlib/region.h +++ b/src/commonlib/include/commonlib/region.h @@ -90,6 +90,11 @@ struct region_device { }, \ } +/* Helper to dynamically initialize region device. */ +void region_device_init(struct region_device *rdev, + const struct region_device_ops *ops, size_t offset, + size_t size); + static inline size_t region_offset(const struct region *r) { return r->offset; @@ -187,4 +192,10 @@ extern const struct region_device_ops xlate_rdev_ops; .rdev = REGION_DEV_INIT(&xlate_rdev_ops, 0, (parent_sz_)),\ } +/* Helper to dynamically initialize xlate region device. */ +void xlate_region_device_init(struct xlate_region_device *xdev, + const struct region_device *access_dev, + size_t sub_offset, size_t sub_size, + size_t parent_size); + #endif /* _REGION_H_ */ diff --git a/src/commonlib/region.c b/src/commonlib/region.c index bfc5fc8471..6f710746ca 100644 --- a/src/commonlib/region.c +++ b/src/commonlib/region.c @@ -133,6 +133,29 @@ void mem_region_device_init(struct mem_region_device *mdev, void *base, mdev->rdev.region.size = size; } +void region_device_init(struct region_device *rdev, + const struct region_device_ops *ops, size_t offset, + size_t size) +{ + memset(rdev, 0, sizeof(*rdev)); + rdev->root = NULL; + rdev->ops = ops; + rdev->region.offset = offset; + rdev->region.size = size; +} + +void xlate_region_device_init(struct xlate_region_device *xdev, + const struct region_device *access_dev, + size_t sub_offset, size_t sub_size, + size_t parent_size) +{ + memset(xdev, 0, sizeof(*xdev)); + xdev->access_dev = access_dev; + xdev->sub_region.offset = sub_offset; + xdev->sub_region.size = sub_size; + region_device_init(&xdev->rdev, &xlate_rdev_ops, 0, parent_size); +} + static void *mdev_mmap(const struct region_device *rd, size_t offset, size_t size __unused) { -- cgit v1.2.3