write_csr(dd, DC_LCB_CFG_ALLOW_LINK_UP, 0);
write_csr(dd, DC_LCB_CFG_IGNORE_LOST_RCLK, 0);
- /* adjust ppd->statusp, if needed */
- update_statusp(ppd, IB_PORT_DOWN);
-
dd_dev_info(ppd->dd, "logical state forced to LINK_DOWN\n");
}
force_logical_link_state_down(ppd);
ppd->host_link_state = HLS_LINK_COOLDOWN; /* LCB access allowed */
+ update_statusp(ppd, IB_PORT_DOWN);
/*
* The LNI has a mandatory wait time after the physical state
handle_linkup_change(dd, 1);
ppd->host_link_state = HLS_UP_INIT;
+ update_statusp(ppd, IB_PORT_INIT);
break;
case HLS_UP_ARMED:
if (ppd->host_link_state != HLS_UP_INIT)
break;
}
ppd->host_link_state = HLS_UP_ARMED;
+ update_statusp(ppd, IB_PORT_ARMED);
/*
* The simulator does not currently implement SMA messages,
* so neighbor_normal is not set. Set it here when we first
/* tell all engines to go running */
sdma_all_running(dd);
ppd->host_link_state = HLS_UP_ACTIVE;
+ update_statusp(ppd, IB_PORT_ACTIVE);
/* Signal the IB layer that the port has went active */
event.device = &dd->verbs_dev.rdi.ibdev;
return "unknown";
}
+/**
+ * update_statusp - Update userspace status flag
+ * @ppd: Port data structure
+ * @state: port state information
+ *
+ * Actual port status is determined by the host_link_state value
+ * in the ppd.
+ *
+ * host_link_state MUST be updated before updating the user space
+ * statusp.
+ */
static void update_statusp(struct hfi1_pportdata *ppd, u32 state)
{
/*
break;
}
}
+ dd_dev_info(ppd->dd, "logical state changed to %s (0x%x)\n",
+ opa_lstate_name(state), state);
}
-/*
+/**
* wait_logical_linkstate - wait for an IB link state change to occur
* @ppd: port device
* @state: the state to wait for
msleep(20);
}
- update_statusp(ppd, state);
- dd_dev_info(ppd->dd,
- "logical state changed to %s (0x%x)\n",
- opa_lstate_name(state),
- state);
return 0;
}
#include "common.h"
#include "sdma.h"
+#define LINK_UP_DELAY 500 /* in microseconds */
+
/**
* format_hwmsg - format a single hwerror message
* @msg message buffer
ib_dispatch_event(&event);
}
-/*
+/**
+ * handle_linkup_change - finish linkup/down state changes
+ * @dd: valid device
+ * @linkup: link state information
+ *
* Handle a linkup or link down notification.
+ * The HW needs time to finish its link up state change. Give it that chance.
+ *
* This is called outside an interrupt.
+ *
*/
void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup)
{
ppd->neighbor_guid, ppd->neighbor_type,
ppd->neighbor_port_number);
+ /* HW needs LINK_UP_DELAY to settle, give it that chance */
+ udelay(LINK_UP_DELAY);
+
/* physical link went up */
ppd->linkup = 1;
ppd->offline_disabled_reason =