RDMA/ionic: Implement device stats ops

JIRA: https://issues.redhat.com/browse/RHEL-121486

commit ea4c399
Author: Abhijit Gangurde <abhijit.gangurde@amd.com>
Date:   Wed Sep 3 11:46:05 2025 +0530

    RDMA/ionic: Implement device stats ops

    Implement device stats operations for hw stats and qp stats.

    Co-developed-by: Allen Hubbe <allen.hubbe@amd.com>
    Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
    Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
    Link: https://patch.msgid.link/20250903061606.4139957-14-abhijit.gangurde@amd.com
    Signed-off-by: Leon Romanovsky <leon@kernel.org>

Signed-off-by: Jakub Ramaseuski <jramaseu@redhat.com>

Author: Jakub Ramaseuski

drivers/infiniband/hw/ionic/ionic_fw.h

@@ -659,6 +659,17 @@ static inline int ionic_v1_use_spec_sge(int min_sge, int spec)
 	return spec;
 }
 
+struct ionic_admin_stats_hdr {
+	__le64		dma_addr;
+	__le32		length;
+	__le32		id_ver;
+	__u8		type_state;
+} __packed;
+
+#define IONIC_ADMIN_STATS_HDRS_IN_V1_LEN 17
+static_assert(sizeof(struct ionic_admin_stats_hdr) ==
+	       IONIC_ADMIN_STATS_HDRS_IN_V1_LEN);
+
 struct ionic_admin_create_ah {
 	__le64		dma_addr;
 	__le32		length;
@@ -837,6 +848,7 @@ struct ionic_v1_admin_wqe {
 	__le16				len;
 
 	union {
+		struct ionic_admin_stats_hdr stats;
 		struct ionic_admin_create_ah create_ah;
 		struct ionic_admin_destroy_ah destroy_ah;
 		struct ionic_admin_query_ah query_ah;
@@ -983,4 +995,35 @@ static inline u32 ionic_v1_eqe_evt_qid(u32 evt)
 	return evt >> IONIC_V1_EQE_QID_SHIFT;
 }
 
+enum ionic_v1_stat_bits {
+	IONIC_V1_STAT_TYPE_SHIFT	= 28,
+	IONIC_V1_STAT_TYPE_NONE		= 0,
+	IONIC_V1_STAT_TYPE_8		= 1,
+	IONIC_V1_STAT_TYPE_LE16		= 2,
+	IONIC_V1_STAT_TYPE_LE32		= 3,
+	IONIC_V1_STAT_TYPE_LE64		= 4,
+	IONIC_V1_STAT_TYPE_BE16		= 5,
+	IONIC_V1_STAT_TYPE_BE32		= 6,
+	IONIC_V1_STAT_TYPE_BE64		= 7,
+	IONIC_V1_STAT_OFF_MASK		= BIT(IONIC_V1_STAT_TYPE_SHIFT) - 1,
+};
+
+struct ionic_v1_stat {
+	union {
+		__be32		be_type_off;
+		u32		type_off;
+	};
+	char			name[28];
+};
+
+static inline int ionic_v1_stat_type(struct ionic_v1_stat *hdr)
+{
+	return hdr->type_off >> IONIC_V1_STAT_TYPE_SHIFT;
+}
+
+static inline unsigned int ionic_v1_stat_off(struct ionic_v1_stat *hdr)
+{
+	return hdr->type_off & IONIC_V1_STAT_OFF_MASK;
+}
+
 #endif /* _IONIC_FW_H_ */