Adding helper function to acquire the physical base address of the
ND region.
Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
ndctl/lib/libndctl.c | 21 +++++++++++++++++++++
ndctl/lib/libndctl.sym | 1 +
ndctl/libndctl.h.in | 1 +
3 files changed, 23 insertions(+)
diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c
index 565c969..3a2530d 100644
--- a/ndctl/lib/libndctl.c
+++ b/ndctl/lib/libndctl.c
@@ -1053,6 +1053,27 @@ NDCTL_EXPORT int ndctl_region_set_ro(struct ndctl_region
*region, int ro)
return ro;
}
+NDCTL_EXPORT unsigned long long ndctl_region_get_resource(struct ndctl_region
*region)
+{
+ struct ndctl_ctx *ctx = ndctl_region_get_ctx(region);
+ char *path = region->region_buf;
+ int len = region->buf_len;
+ char buf[SYSFS_ATTR_SIZE];
+ int rc;
+
+ if (snprintf(path, len, "%s/resource", region->region_path) >= len) {
+ err(ctx, "%s: buffer too small!\n",
+ ndctl_region_get_devname(region));
+ return ULLONG_MAX;
+ }
+
+ rc = sysfs_read_attr(ctx, path, buf);
+ if (rc < 0)
+ return ULLONG_MAX;
+
+ return strtoull(buf, NULL, 0);
+}
+
NDCTL_EXPORT const char *ndctl_bus_get_cmd_name(struct ndctl_bus *bus, int cmd)
{
return nvdimm_bus_cmd_name(cmd);
diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym
index be2e368..ca5165a 100644
--- a/ndctl/lib/libndctl.sym
+++ b/ndctl/lib/libndctl.sym
@@ -137,6 +137,7 @@ global:
ndctl_region_get_interleave_set;
ndctl_region_get_ro;
ndctl_region_set_ro;
+ ndctl_region_get_resource;
ndctl_interleave_set_get_first;
ndctl_interleave_set_get_next;
ndctl_interleave_set_is_active;
diff --git a/ndctl/libndctl.h.in b/ndctl/libndctl.h.in
index c27581d..d38aa45 100644
--- a/ndctl/libndctl.h.in
+++ b/ndctl/libndctl.h.in
@@ -388,6 +388,7 @@ struct ndctl_namespace *ndctl_region_get_namespace_seed(
struct ndctl_region *region);
int ndctl_region_get_ro(struct ndctl_region *region);
int ndctl_region_set_ro(struct ndctl_region *region, int ro);
+unsigned long long ndctl_region_get_resource(struct ndctl_region *region);
struct ndctl_btt *ndctl_region_get_btt_seed(struct ndctl_region *region);
struct ndctl_pfn *ndctl_region_get_pfn_seed(struct ndctl_region *region);
unsigned int ndctl_region_get_nstype(struct ndctl_region *region);
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