[PATCH 04/11] lib: sbi_domain: Introduce sbi_domain_find_by_name() function

[Anup Patel]

Add sbi_domain_find_by_name() to allow driver locate domain instance
using domain name. This also means domain names must be unique.

Signed-off-by: Anup Patel <anup.patel at oss.qualcomm.com>
---
 include/sbi/sbi_domain.h |  7 +++++++
 lib/sbi/sbi_domain.c     | 19 ++++++++++++++++++-
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/include/sbi/sbi_domain.h b/include/sbi/sbi_domain.h
index 1f773e41..394e7ddf 100644
--- a/include/sbi/sbi_domain.h
+++ b/include/sbi/sbi_domain.h
@@ -323,6 +323,13 @@ bool sbi_domain_check_addr_range(const struct sbi_domain *dom,
 				 unsigned long mode,
 				 unsigned long access_flags);
 
+/**
+ * Find a domain by name
+ * @param name Name of the domain
+ * @return pointer to the domain or NULL upon failure
+ */
+struct sbi_domain *sbi_domain_find_by_name(const char *name);
+
 /** Dump domain details on the console */
 void sbi_domain_dump(const struct sbi_domain *dom, const char *suffix);
 
diff --git a/lib/sbi/sbi_domain.c b/lib/sbi/sbi_domain.c
index b3f5892d..f5c62509 100644
--- a/lib/sbi/sbi_domain.c
+++ b/lib/sbi/sbi_domain.c
@@ -531,6 +531,21 @@ bool sbi_domain_check_addr_range(const struct sbi_domain *dom,
 	return true;
 }
 
+struct sbi_domain *sbi_domain_find_by_name(const char *name)
+{
+	struct sbi_domain *dom;
+
+	if (!name)
+		return NULL;
+
+	sbi_domain_for_each(dom) {
+		if (!sbi_strcmp(dom->name, name))
+			return dom;
+	}
+
+	return NULL;
+}
+
 void sbi_domain_dump(const struct sbi_domain *dom, const char *suffix)
 {
 	u32 i, j, k;
@@ -645,11 +660,13 @@ int sbi_domain_register(struct sbi_domain *dom)
 	/*
 	 * Ensure that:
 	 *  1) Domain not already registered
+	 *  2) Domain name is unique
 	 *  2) Initialization order is unique
 	 */
 	sbi_domain_for_each(tdom) {
 		if (tdom == dom ||
-		    tdom->init_order == dom->init_order)
+		    tdom->init_order == dom->init_order ||
+		    !sbi_strcmp(tdom->name, dom->name))
 			return SBI_EALREADY;
 	}
 
-- 
2.43.0