[hermon] Add support for port management event

Inspired by Flexboot, the function hermon_event_port_mgmnt_change() is
added to handle the HERMON_EV_PORT_MGMNT_CHANGE event type, which
updates the Infiniband subsystem.

Signed-off-by: Christian Iversen <ci@iversenit.dk>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/drivers/infiniband/hermon.c b/src/drivers/infiniband/hermon.c
index 061ee81c7efbc9d7986d13db4704a9849fc3c5b7..68ce5d4a0fcf83fd549b0d2b4aeb4fae380d9c77 100644 (file)
--- a/src/drivers/infiniband/hermon.c
+++ b/src/drivers/infiniband/hermon.c
@@ -2120,6 +2120,32 @@ static void hermon_event_port_state_change ( struct hermon *hermon,
                                                link_up );
 }
 
+/**
+ * Handle port management event
+ *
+ * @v hermon           Hermon device
+ * @v eqe              Port management change event queue entry
+ */
+static void hermon_event_port_mgmnt_change ( struct hermon *hermon,
+                                            union hermonprm_event_entry *eqe){
+       unsigned int port;
+
+       /* Get port */
+       port = ( MLX_GET ( &eqe->port_mgmnt_change, port ) - 1 );
+       DBGC ( hermon, "Hermon %p port %d management change\n",
+              hermon, ( port + 1 ) );
+
+       /* Sanity check */
+       if ( port >= hermon->cap.num_ports ) {
+               DBGC ( hermon, "Hermon %p port %d does not exist!\n",
+                      hermon, ( port + 1 ) );
+               return;
+       }
+
+       /* Update MAD parameters */
+       ib_smc_update ( hermon->port[port].ibdev, hermon_mad );
+}
+
 /**
  * Poll event queue
  *
@@ -2169,6 +2195,9 @@ static void hermon_poll_eq ( struct ib_device *ibdev ) {
                case HERMON_EV_PORT_STATE_CHANGE:
                        hermon_event_port_state_change ( hermon, eqe );
                        break;
+               case HERMON_EV_PORT_MGMNT_CHANGE:
+                       hermon_event_port_mgmnt_change ( hermon, eqe );
+                       break;
                default:
                        DBGC ( hermon, "Hermon %p EQN %#lx unrecognised event "
                               "type %#02x:%#02x\n",

diff --git a/src/drivers/infiniband/hermon.h b/src/drivers/infiniband/hermon.h
index b4d95d23e706e6472d799fa4cc6b857d3da74f6c..fddd7fd416fad2e28cbbe6ef95e8336bdcfdbd4e 100644 (file)
--- a/src/drivers/infiniband/hermon.h
+++ b/src/drivers/infiniband/hermon.h
@@ -123,6 +123,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #define HERMON_SET_PORT_GID_TABLE      0x0500
 
 #define HERMON_EV_PORT_STATE_CHANGE    0x09
+#define HERMON_EV_PORT_MGMNT_CHANGE    0x1d
 
 #define HERMON_SCHED_QP0               0x3f
 #define HERMON_SCHED_DEFAULT           0x83
@@ -217,6 +218,13 @@ struct hermonprm_port_state_change_event_st {
        struct hermonprm_port_state_change_st data;
 } __attribute__ (( packed ));
 
+struct hermonprm_port_mgmnt_change_event_st {
+       pseudo_bit_t reserved[0x00020];
+/* -------------- */
+       pseudo_bit_t port[0x00008];
+       pseudo_bit_t reserved0[0x00018];
+} __attribute__ (( packed ));
+
 struct hermonprm_sense_port_st {
        pseudo_bit_t reserved0[0x00020];
 /* -------------- */
@@ -460,6 +468,7 @@ struct MLX_DECLARE_STRUCT ( hermonprm_mod_stat_cfg_input_mod );
 struct MLX_DECLARE_STRUCT ( hermonprm_mpt );
 struct MLX_DECLARE_STRUCT ( hermonprm_mtt );
 struct MLX_DECLARE_STRUCT ( hermonprm_port_state_change_event );
+struct MLX_DECLARE_STRUCT ( hermonprm_port_mgmnt_change_event );
 struct MLX_DECLARE_STRUCT ( hermonprm_qp_db_record );
 struct MLX_DECLARE_STRUCT ( hermonprm_qp_ee_state_transitions );
 struct MLX_DECLARE_STRUCT ( hermonprm_query_dev_cap );
@@ -530,6 +539,7 @@ union hermonprm_completion_entry {
 union hermonprm_event_entry {
        struct hermonprm_event_queue_entry generic;
        struct hermonprm_port_state_change_event port_state_change;
+       struct hermonprm_port_mgmnt_change_event port_mgmnt_change;
 } __attribute__ (( packed ));
 
 union hermonprm_doorbell_register {