ice: Add code for DCB initialization part 2/4

This patch introduces a new top level function ice_init_dcb (and
related lower level helper functions) which continues the DCB init
flow.

This function uses ice_get_dcb_cfg to get, parse and store the DCB
configuration. Once this is done, it sets itself up to be notified
by the firmware on LLDP MIB change events.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 4809e5ac55f4..bbceaca11541 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -1132,6 +1132,48 @@ struct ice_aqc_pf_vf_msg {
         __le32 addr_low;
 };
 
+/* Get LLDP MIB (indirect 0x0A00)
+ * Note: This is also used by the LLDP MIB Change Event (0x0A01)
+ * as the format is the same.
+ */
+struct ice_aqc_lldp_get_mib {
+        u8 type;
+#define ICE_AQ_LLDP_MIB_TYPE_S                  0
+#define ICE_AQ_LLDP_MIB_TYPE_M                  (0x3 << ICE_AQ_LLDP_MIB_TYPE_S)
+#define ICE_AQ_LLDP_MIB_LOCAL                   0
+#define ICE_AQ_LLDP_MIB_REMOTE                  1
+#define ICE_AQ_LLDP_MIB_LOCAL_AND_REMOTE        2
+#define ICE_AQ_LLDP_BRID_TYPE_S                 2
+#define ICE_AQ_LLDP_BRID_TYPE_M                 (0x3 << ICE_AQ_LLDP_BRID_TYPE_S)
+#define ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID      0
+#define ICE_AQ_LLDP_BRID_TYPE_NON_TPMR          1
+/* Tx pause flags in the 0xA01 event use ICE_AQ_LLDP_TX_* */
+#define ICE_AQ_LLDP_TX_S                        0x4
+#define ICE_AQ_LLDP_TX_M                        (0x03 << ICE_AQ_LLDP_TX_S)
+#define ICE_AQ_LLDP_TX_ACTIVE                   0
+#define ICE_AQ_LLDP_TX_SUSPENDED                1
+#define ICE_AQ_LLDP_TX_FLUSHED                  3
+/* The following bytes are reserved for the Get LLDP MIB command (0x0A00)
+ * and in the LLDP MIB Change Event (0x0A01). They are valid for the
+ * Get LLDP MIB (0x0A00) response only.
+ */
+        u8 reserved1;
+        __le16 local_len;
+        __le16 remote_len;
+        u8 reserved2[2];
+        __le32 addr_high;
+        __le32 addr_low;
+};
+
+/* Configure LLDP MIB Change Event (direct 0x0A01) */
+/* For MIB Change Event use ice_aqc_lldp_get_mib structure above */
+struct ice_aqc_lldp_set_mib_change {
+        u8 command;
+#define ICE_AQ_LLDP_MIB_UPDATE_ENABLE           0x0
+#define ICE_AQ_LLDP_MIB_UPDATE_DIS              0x1
+        u8 reserved[15];
+};
+
 /* Start LLDP (direct 0x0A06) */
 struct ice_aqc_lldp_start {
         u8 command;
@@ -1140,6 +1182,36 @@ struct ice_aqc_lldp_start {
         u8 reserved[15];
 };
 
+/* Get CEE DCBX Oper Config (0x0A07)
+ * The command uses the generic descriptor struct and
+ * returns the struct below as an indirect response.
+ */
+struct ice_aqc_get_cee_dcb_cfg_resp {
+        u8 oper_num_tc;
+        u8 oper_prio_tc[4];
+        u8 oper_tc_bw[8];
+        u8 oper_pfc_en;
+        __le16 oper_app_prio;
+#define ICE_AQC_CEE_APP_FCOE_S          0
+#define ICE_AQC_CEE_APP_FCOE_M          (0x7 << ICE_AQC_CEE_APP_FCOE_S)
+#define ICE_AQC_CEE_APP_ISCSI_S         3
+#define ICE_AQC_CEE_APP_ISCSI_M         (0x7 << ICE_AQC_CEE_APP_ISCSI_S)
+#define ICE_AQC_CEE_APP_FIP_S           8
+#define ICE_AQC_CEE_APP_FIP_M           (0x7 << ICE_AQC_CEE_APP_FIP_S)
+        __le32 tlv_status;
+#define ICE_AQC_CEE_PG_STATUS_S         0
+#define ICE_AQC_CEE_PG_STATUS_M         (0x7 << ICE_AQC_CEE_PG_STATUS_S)
+#define ICE_AQC_CEE_PFC_STATUS_S        3
+#define ICE_AQC_CEE_PFC_STATUS_M        (0x7 << ICE_AQC_CEE_PFC_STATUS_S)
+#define ICE_AQC_CEE_FCOE_STATUS_S       8
+#define ICE_AQC_CEE_FCOE_STATUS_M       (0x7 << ICE_AQC_CEE_FCOE_STATUS_S)
+#define ICE_AQC_CEE_ISCSI_STATUS_S      11
+#define ICE_AQC_CEE_ISCSI_STATUS_M      (0x7 << ICE_AQC_CEE_ISCSI_STATUS_S)
+#define ICE_AQC_CEE_FIP_STATUS_S        16
+#define ICE_AQC_CEE_FIP_STATUS_M        (0x7 << ICE_AQC_CEE_FIP_STATUS_S)
+        u8 reserved[12];
+};
+
 /* Stop/Start LLDP Agent (direct 0x0A09)
  * Used for stopping/starting specific LLDP agent. e.g. DCBx.
  * The same structure is used for the response, with the command field
@@ -1411,6 +1483,8 @@ struct ice_aq_desc {
                 struct ice_aqc_query_txsched_res query_sched_res;
                 struct ice_aqc_nvm nvm;
                 struct ice_aqc_pf_vf_msg virt;
+                struct ice_aqc_lldp_get_mib lldp_get_mib;
+                struct ice_aqc_lldp_set_mib_change lldp_set_event;
                 struct ice_aqc_lldp_start lldp_start;
                 struct ice_aqc_lldp_stop_start_specific_agent lldp_agent_ctrl;
                 struct ice_aqc_get_set_rss_lut get_set_rss_lut;
@@ -1445,6 +1519,8 @@ struct ice_aq_desc {
 /* error codes */
 enum ice_aq_err {
         ICE_AQ_RC_OK            = 0,  /* Success */
+        ICE_AQ_RC_EPERM         = 1,  /* Operation not permitted */
+        ICE_AQ_RC_ENOENT        = 2,  /* No such element */
         ICE_AQ_RC_ENOMEM        = 9,  /* Out of memory */
         ICE_AQ_RC_EBUSY         = 12, /* Device or resource busy */
         ICE_AQ_RC_EEXIST        = 13, /* Object already exists */
@@ -1515,7 +1591,10 @@ enum ice_adminq_opc {
         ice_mbx_opc_send_msg_to_pf                      = 0x0801,
         ice_mbx_opc_send_msg_to_vf                      = 0x0802,
         /* LLDP commands */
+        ice_aqc_opc_lldp_get_mib                        = 0x0A00,
+        ice_aqc_opc_lldp_set_mib_change                 = 0x0A01,
         ice_aqc_opc_lldp_start                          = 0x0A06,
+        ice_aqc_opc_get_cee_dcb_cfg                     = 0x0A07,
         ice_aqc_opc_lldp_stop_start_specific_agent      = 0x0A09,
 
         /* RSS commands */