[coreboot-gerrit] Patch set updated for coreboot: 2b0853a memrange: add 2 new range_entry routines

Aaron Durbin (adurbin@google.com) gerrit at coreboot.org
Fri Mar 29 14:31:45 CET 2013

Aaron Durbin (adurbin at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2924


commit 2b0853afddd2a2f5166012c05cff05fbacb0cbb4
Author: Aaron Durbin <adurbin at chromium.org>
Date:   Tue Mar 26 21:22:42 2013 -0500

    memrange: add 2 new range_entry routines
    Two convenience functions are added to operate on a range_entry:
    - range_entry_update_tag() - update the entry's tag
    - memranges_next_entry() - get the next entry after the one provide
    These functions will be used by a follow on patch to the MTRR code
    to allow hole punching in WB region when the default MTRR type is
    Change-Id: I3c2be19c8ea1bbbdf7736c867e4a2aa82df2d611
    Signed-off-by: Aaron Durbin <adurbin at chromium.org>
 src/include/memrange.h | 9 +++++++++
 src/lib/memrange.c     | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/src/include/memrange.h b/src/include/memrange.h
index 23dae6a..0e69b2f 100644
--- a/src/include/memrange.h
+++ b/src/include/memrange.h
@@ -61,6 +61,12 @@ static inline unsigned long range_entry_tag(const struct range_entry *r)
 	return r->tag;
+static inline void range_entry_update_tag(struct range_entry *r,
+                                          unsigned long new_tag)
+	r->tag = new_tag;
 /* Iterate over each entry in a memranges structure. Ranges cannot
  * be deleted while processing each entry as the list cannot be safely
  * traversed after such an operation.
@@ -104,4 +110,7 @@ void memranges_create_hole(struct memranges *ranges,
 void memranges_insert(struct memranges *ranges,
                       resource_t base, resource_t size, unsigned long 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);
 #endif /* MEMRANGE_H_ */
diff --git a/src/lib/memrange.c b/src/lib/memrange.c
index c376d52..1a16ef7 100644
--- a/src/lib/memrange.c
+++ b/src/lib/memrange.c
@@ -321,3 +321,9 @@ void memranges_fill_holes_up_to(struct memranges *ranges,
 	/* Merge all entries that were newly added. */
+struct range_entry *memranges_next_entry(struct memranges *ranges,
+                                         const struct range_entry *r)
+	return r->next;

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