enic: enic rq extended cq defines

JIRA: https://issues.redhat.com/browse/RHEL-84863

commit 2be2eb7
Author: Satish Kharat <satishkh@cisco.com>
Date:   Tue Mar 4 19:56:39 2025 -0500

    enic: enic rq extended cq defines

    Adds the defines for 32 and 64 byte receive queue completion queue
    descriptors.
    Adds devcmd define to get rq cq descriptor size/s supported by hw.

    Co-developed-by: Nelson Escobar <neescoba@cisco.com>
    Signed-off-by: Nelson Escobar <neescoba@cisco.com>
    Co-developed-by: John Daley <johndale@cisco.com>
    Signed-off-by: John Daley <johndale@cisco.com>
    Signed-off-by: Satish Kharat <satishkh@cisco.com>
    Link: https://patch.msgid.link/20250304-enic_cleanup_and_ext_cq-v2-3-85804263dad8@cisco.com
    Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Signed-off-by: Nelson Escobar <nescobar@redhat.com>

Author: Nelson Escobar

drivers/net/ethernet/cisco/enic/cq_enet_desc.h

@@ -24,6 +24,23 @@ static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
 		color, q_number, completed_index);
 }
 
+/*
+ * Defines and Capabilities for CMD_CQ_ENTRY_SIZE_SET
+ */
+#define VNIC_RQ_ALL (~0ULL)
+
+#define VNIC_RQ_CQ_ENTRY_SIZE_16 0
+#define VNIC_RQ_CQ_ENTRY_SIZE_32 1
+#define VNIC_RQ_CQ_ENTRY_SIZE_64 2
+
+#define VNIC_RQ_CQ_ENTRY_SIZE_16_CAPABLE BIT(VNIC_RQ_CQ_ENTRY_SIZE_16)
+#define VNIC_RQ_CQ_ENTRY_SIZE_32_CAPABLE BIT(VNIC_RQ_CQ_ENTRY_SIZE_32)
+#define VNIC_RQ_CQ_ENTRY_SIZE_64_CAPABLE BIT(VNIC_RQ_CQ_ENTRY_SIZE_64)
+
+#define VNIC_RQ_CQ_ENTRY_SIZE_ALL_BIT  (VNIC_RQ_CQ_ENTRY_SIZE_16_CAPABLE | \
+					VNIC_RQ_CQ_ENTRY_SIZE_32_CAPABLE | \
+					VNIC_RQ_CQ_ENTRY_SIZE_64_CAPABLE)
+
 /* Completion queue descriptor: Ethernet receive queue, 16B */
 struct cq_enet_rq_desc {
 	__le16 completed_index_flags;
@@ -36,6 +53,45 @@ struct cq_enet_rq_desc {
 	u8 type_color;
 };
 
+/* Completion queue descriptor: Ethernet receive queue, 32B */
+struct cq_enet_rq_desc_32 {
+	__le16 completed_index_flags;
+	__le16 q_number_rss_type_flags;
+	__le32 rss_hash;
+	__le16 bytes_written_flags;
+	__le16 vlan;
+	__le16 checksum_fcoe;
+	u8 flags;
+	u8 fetch_index_flags;
+	__le32 time_stamp;
+	__le16 time_stamp2;
+	__le16 pie_info;
+	__le32 pie_info2;
+	__le16 pie_info3;
+	u8 pie_info4;
+	u8 type_color;
+};
+
+/* Completion queue descriptor: Ethernet receive queue, 64B */
+struct cq_enet_rq_desc_64 {
+	__le16 completed_index_flags;
+	__le16 q_number_rss_type_flags;
+	__le32 rss_hash;
+	__le16 bytes_written_flags;
+	__le16 vlan;
+	__le16 checksum_fcoe;
+	u8 flags;
+	u8 fetch_index_flags;
+	__le32 time_stamp;
+	__le16 time_stamp2;
+	__le16 pie_info;
+	__le32 pie_info2;
+	__le16 pie_info3;
+	u8 pie_info4;
+	u8 reserved[32];
+	u8 type_color;
+};
+
 #define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT          (0x1 << 12)
 #define CQ_ENET_RQ_DESC_FLAGS_FCOE                  (0x1 << 13)
 #define CQ_ENET_RQ_DESC_FLAGS_EOP                   (0x1 << 14)

drivers/net/ethernet/cisco/enic/vnic_devcmd.h

@@ -436,6 +436,25 @@ enum vnic_devcmd_cmd {
 	 * in: (u16) a2 = unsigned short int port information
 	 */
 	CMD_OVERLAY_OFFLOAD_CFG = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 73),
+
+	/*
+	 * Set extended CQ field in MREGS of RQ (or all RQs)
+	 * for given vNIC
+	 * in: (u64) a0 = RQ selection (VNIC_RQ_ALL for all RQs)
+	 *     (u32) a1 = CQ entry size
+	 *         VNIC_RQ_CQ_ENTRY_SIZE_16 --> 16 bytes
+	 *         VNIC_RQ_CQ_ENTRY_SIZE_32 --> 32 bytes
+	 *         VNIC_RQ_CQ_ENTRY_SIZE_64 --> 64 bytes
+	 *
+	 * Capability query:
+	 * out: (u32) a0 = errno, 0:valid cmd
+	 *      (u32) a1 = value consisting of supported entries
+	 *         bit 0: 16 bytes
+	 *         bit 1: 32 bytes
+	 *         bit 2: 64 bytes
+	 */
+	CMD_CQ_ENTRY_SIZE_SET = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 90),
+
 };
 
 /* CMD_ENABLE2 flags */