[PATCH v3 1/3] common/iavf: support Rx timestamp in virtual channel

[Simei Su <simei.su@intel.com>]

Add new ops and structures to support VF to support Rx timestamp
on flex descriptor.

"VIRTCHNL_OP_1588_PTP_GET_CAPS" ops is sent by the VF to request PTP
capabilities and responded by the PF with capabilities enabled for
that VF.

"VIRTCHNL_OP_1588_PTP_GET_TIME" ops is sent by the VF to request
the current time of the PHC. The PF will respond by reading the
device time and reporting it back to the VF.

Signed-off-by: Simei Su <simei.su@intel.com>
---
 drivers/common/iavf/virtchnl.h | 62 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 60 insertions(+), 2 deletions(-)

diff --git a/drivers/common/iavf/virtchnl.h b/drivers/common/iavf/virtchnl.h
index 249ae6e..2d49f95 100644
--- a/drivers/common/iavf/virtchnl.h
+++ b/drivers/common/iavf/virtchnl.h
@@ -159,6 +159,8 @@ enum virtchnl_ops {
 	VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2 = 57,
 	VIRTCHNL_OP_ENABLE_VLAN_FILTERING_V2 = 58,
 	VIRTCHNL_OP_DISABLE_VLAN_FILTERING_V2 = 59,
+	VIRTCHNL_OP_1588_PTP_GET_CAPS = 60,
+	VIRTCHNL_OP_1588_PTP_GET_TIME = 61,
 	VIRTCHNL_OP_GET_QOS_CAPS = 66,
 	VIRTCHNL_OP_CONFIG_QUEUE_TC_MAP = 67,
 	VIRTCHNL_OP_ENABLE_QUEUES_V2 = 107,
@@ -276,6 +278,10 @@ static inline const char *virtchnl_op_str(enum virtchnl_ops v_opcode)
 		return "VIRTCHNL_OP_ENABLE_VLAN_FILTERING_V2";
 	case VIRTCHNL_OP_DISABLE_VLAN_FILTERING_V2:
 		return "VIRTCHNL_OP_DISABLE_VLAN_FILTERING_V2";
+	case VIRTCHNL_OP_1588_PTP_GET_CAPS:
+		return "VIRTCHNL_OP_1588_PTP_GET_CAPS";
+	case VIRTCHNL_OP_1588_PTP_GET_TIME:
+		return "VIRTCHNL_OP_1588_PTP_GET_TIME";
 	case VIRTCHNL_OP_MAX:
 		return "VIRTCHNL_OP_MAX";
 	default:
@@ -411,7 +417,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
 #define VIRTCHNL_VF_OFFLOAD_FDIR_PF		BIT(28)
 #define VIRTCHNL_VF_OFFLOAD_QOS		BIT(29)
 #define VIRTCHNL_VF_CAP_DCF			BIT(30)
-	/* BIT(31) is reserved */
+#define VIRTCHNL_VF_CAP_PTP			BIT(31)
 
 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
 			       VIRTCHNL_VF_OFFLOAD_VLAN | \
@@ -498,6 +504,18 @@ enum virtchnl_rx_desc_id_bitmasks {
 	/* 22 through 63 are reserved */
 };
 
+/* virtchnl_rxq_info_flags
+ *
+ * Definition of bits in the flags field of the virtchnl_rxq_info structure.
+ */
+enum virtchnl_rxq_info_flags {
+	/* If the VIRTCHNL_PTP_RX_TSTAMP bit of the flag field is set, this is
+	 * a request to enable Rx timestamp. Other flag bits are currently
+	 * reserved and they may be extended in the future.
+	 */
+	VIRTCHNL_PTP_RX_TSTAMP = BIT(0),
+};
+
 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
  * VF sends this message to set up parameters for one RX queue.
  * External data buffer contains one instance of virtchnl_rxq_info.
@@ -526,7 +544,8 @@ struct virtchnl_rxq_info {
 	 * with VIRTCHNL_RXDID_1_32B_BASE.
 	 */
 	u8 rxdid;
-	u8 pad1[2];
+	u8 flags; /* see virtchnl_rxq_info_flags */
+	u8 pad1;
 	u64 dma_ring_addr;
 
 	/* see enum virtchnl_rx_hsplit; deprecated with AVF 1.0 */
@@ -2004,6 +2023,39 @@ struct virtchnl_quanta_cfg {
 
 VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_quanta_cfg);
 
+#define VIRTCHNL_1588_PTP_CAP_RX_TSTAMP		BIT(1)
+#define VIRTCHNL_1588_PTP_CAP_READ_PHC		BIT(2)
+
+struct virtchnl_phc_regs {
+	u32 clock_hi;
+	u32 clock_lo;
+	u8 pcie_region;
+	u8 rsvd[15];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_phc_regs);
+
+struct virtchnl_ptp_caps {
+	struct virtchnl_phc_regs phc_regs;
+	u32 caps;
+	s32 max_adj;
+	u8 tx_tstamp_idx;
+	u8 n_ext_ts;
+	u8 n_per_out;
+	u8 n_pins;
+	u8 tx_tstamp_format;
+	u8 rsvd[11];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(48, virtchnl_ptp_caps);
+
+struct virtchnl_phc_time {
+	u64 time;
+	u8 rsvd[8];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_phc_time);
+
 /* Since VF messages are limited by u16 size, precalculate the maximum possible
  * values of nested elements in virtchnl structures that virtual channel can
  * possibly handle in a single message.
@@ -2321,6 +2373,12 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
 	case VIRTCHNL_OP_DISABLE_VLAN_FILTERING_V2:
 		valid_len = sizeof(struct virtchnl_vlan_setting);
 		break;
+	case VIRTCHNL_OP_1588_PTP_GET_CAPS:
+		valid_len = sizeof(struct virtchnl_ptp_caps);
+		break;
+	case VIRTCHNL_OP_1588_PTP_GET_TIME:
+		valid_len = sizeof(struct virtchnl_phc_time);
+		break;
 	case VIRTCHNL_OP_ENABLE_QUEUES_V2:
 	case VIRTCHNL_OP_DISABLE_QUEUES_V2:
 		valid_len = sizeof(struct virtchnl_del_ena_dis_queues);
-- 
2.9.5