[SeaBIOS] [PATCH v2 2/5] pmm: add a way to test whether memory is in FSEG
Michael S. Tsirkin
mst at redhat.com
Sun Jul 7 17:42:38 CEST 2013
Will be handy for looking for RSDP.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
src/pmm.c | 24 ++++++++++++++++++------
src/util.h | 1 +
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/src/pmm.c b/src/pmm.c
index 8f993fd..8bd8983 100644
--- a/src/pmm.c
+++ b/src/pmm.c
@@ -120,15 +120,23 @@ addSpace(struct zone_s *zone, void *start, void *end)
// Search all zones for an allocation obtained from allocSpace()
static struct allocinfo_s *
+findAllocInZone(struct zone_s *zone, void *data)
+{
+ struct allocinfo_s *info;
+ hlist_for_each_entry(info, &zone->head, node)
+ if (info->data == data)
+ return info;
+ return NULL;
+}
+
+static struct allocinfo_s *
findAlloc(void *data)
{
int i;
- for (i=0; i<ARRAY_SIZE(Zones); i++) {
- struct allocinfo_s *info;
- hlist_for_each_entry(info, &Zones[i]->head, node) {
- if (info->data == data)
- return info;
- }
+ for (i = 0; i < ARRAY_SIZE(Zones); i++) {
+ struct allocinfo_s *info = findAllocInZone(Zones[i], data);
+ if (info)
+ return info;
}
return NULL;
}
@@ -241,6 +249,10 @@ pmm_find(u32 handle)
return NULL;
}
+int pmm_test_fseg(void *data)
+{
+ return !!findAllocInZone(&ZoneFSeg, data);
+}
/****************************************************************
* 0xc0000-0xf0000 management
diff --git a/src/util.h b/src/util.h
index 7b50c38..44e1c1a 100644
--- a/src/util.h
+++ b/src/util.h
@@ -378,6 +378,7 @@ void malloc_init(void);
void malloc_prepboot(void);
void *pmm_malloc(struct zone_s *zone, u32 handle, u32 size, u32 align);
int pmm_free(void *data);
+int pmm_test_fseg(void *data);
void pmm_init(void);
void pmm_prepboot(void);
#define PMM_DEFAULT_HANDLE 0xFFFFFFFF
--
MST
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