diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/intr.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/intr.c | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hfi1/intr.c b/drivers/infiniband/hw/hfi1/intr.c index 96845dfed5c5..387305b768e9 100644 --- a/drivers/infiniband/hw/hfi1/intr.c +++ b/drivers/infiniband/hw/hfi1/intr.c @@ -53,6 +53,42 @@ #include "common.h" #include "sdma.h" +#define LINK_UP_DELAY 500 /* in microseconds */ + +static void set_mgmt_allowed(struct hfi1_pportdata *ppd) +{ + u32 frame; + struct hfi1_devdata *dd = ppd->dd; + + if (ppd->neighbor_type == NEIGHBOR_TYPE_HFI) { + ppd->mgmt_allowed = 1; + } else { + read_8051_config(dd, REMOTE_LNI_INFO, GENERAL_CONFIG, &frame); + ppd->mgmt_allowed = (frame >> MGMT_ALLOWED_SHIFT) + & MGMT_ALLOWED_MASK; + } +} + +/* + * Our neighbor has indicated that we are allowed to act as a fabric + * manager, so place the full management partition key in the second + * (0-based) pkey array position. Note that we should already have + * the limited management partition key in array element 1, and also + * that the port is not yet up when add_full_mgmt_pkey() is invoked. + */ +static void add_full_mgmt_pkey(struct hfi1_pportdata *ppd) +{ + struct hfi1_devdata *dd = ppd->dd; + + /* Sanity check - ppd->pkeys[2] should be 0, or already initialized */ + if (!((ppd->pkeys[2] == 0) || (ppd->pkeys[2] == FULL_MGMT_P_KEY))) + dd_dev_warn(dd, "%s pkey[2] already set to 0x%x, resetting it to 0x%x\n", + __func__, ppd->pkeys[2], FULL_MGMT_P_KEY); + ppd->pkeys[2] = FULL_MGMT_P_KEY; + (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0); + hfi1_event_pkey_change(ppd->dd, ppd->port); +} + /** * format_hwmsg - format a single hwerror message * @msg message buffer @@ -102,9 +138,16 @@ static void signal_ib_event(struct hfi1_pportdata *ppd, enum ib_event_type ev) 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) { @@ -151,6 +194,18 @@ 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); + + /* + * 'MgmtAllowed' information, which is exchanged during + * LNI, is available at this point. + */ + set_mgmt_allowed(ppd); + + if (ppd->mgmt_allowed) + add_full_mgmt_pkey(ppd); + /* physical link went up */ ppd->linkup = 1; ppd->offline_disabled_reason = |