[PATCH 05/10] lib: sbi: domain: add domain lookup by name

[Raymond Mao <raymondmaoca@gmail.com>]

From: Raymond Mao <raymond.mao@riscstar.com>

Provide a helper to resolve a domain by its DT node name, used by
sysirq DT parsing.

Signed-off-by: Raymond Mao <raymond.mao@riscstar.com>
---
 include/sbi/sbi_domain.h |  3 +++
 lib/sbi/sbi_domain.c     | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/sbi/sbi_domain.h b/include/sbi/sbi_domain.h
index 7e288cd8..b7267da8 100644
--- a/include/sbi/sbi_domain.h
+++ b/include/sbi/sbi_domain.h
@@ -232,6 +232,9 @@ struct sbi_domain *sbi_hartindex_to_domain(u32 hartindex);
 /** Update HART local pointer to point to specified domain */
 void sbi_update_hartindex_to_domain(u32 hartindex, struct sbi_domain *dom);
 
+/** Find domain by DT node name (domain name) */
+struct sbi_domain *sbi_domain_find_by_name(const char *name);
+
 /** Get pointer to sbi_domain for current HART */
 #define sbi_domain_thishart_ptr() \
 	sbi_hartindex_to_domain(current_hartindex())
diff --git a/lib/sbi/sbi_domain.c b/lib/sbi/sbi_domain.c
index 2a846eea..c33f2b3c 100644
--- a/lib/sbi/sbi_domain.c
+++ b/lib/sbi/sbi_domain.c
@@ -60,6 +60,21 @@ void sbi_update_hartindex_to_domain(u32 hartindex, struct sbi_domain *dom)
 	sbi_scratch_write_type(scratch, void *, domain_hart_ptr_offset, dom);
 }
 
+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_strncmp(dom->name, name, sizeof(dom->name)))
+			return dom;
+	}
+
+	return NULL;
+}
+
 bool sbi_domain_is_assigned_hart(const struct sbi_domain *dom, u32 hartindex)
 {
 	bool ret;
-- 
2.25.1


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