diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/intr.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/intr.c | 119 |
1 files changed, 51 insertions, 68 deletions
diff --git a/drivers/infiniband/hw/hfi1/intr.c b/drivers/infiniband/hw/hfi1/intr.c index 04a5082d5ac5..d8dd1a599631 100644 --- a/drivers/infiniband/hw/hfi1/intr.c +++ b/drivers/infiniband/hw/hfi1/intr.c @@ -1,48 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright(c) 2015, 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * */ #include <linux/pci.h> @@ -53,35 +11,40 @@ #include "common.h" #include "sdma.h" -/** - * format_hwmsg - format a single hwerror message - * @msg message buffer - * @msgl length of message buffer - * @hwmsg message to add to message buffer - */ -static void format_hwmsg(char *msg, size_t msgl, const char *hwmsg) +#define LINK_UP_DELAY 500 /* in microseconds */ + +static void set_mgmt_allowed(struct hfi1_pportdata *ppd) { - strlcat(msg, "[", msgl); - strlcat(msg, hwmsg, msgl); - strlcat(msg, "]", msgl); + 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; + } } -/** - * hfi1_format_hwerrors - format hardware error messages for display - * @hwerrs hardware errors bit vector - * @hwerrmsgs hardware error descriptions - * @nhwerrmsgs number of hwerrmsgs - * @msg message buffer - * @msgl message buffer length +/* + * 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. */ -void hfi1_format_hwerrors(u64 hwerrs, const struct hfi1_hwerror_msgs *hwerrmsgs, - size_t nhwerrmsgs, char *msg, size_t msgl) +static void add_full_mgmt_pkey(struct hfi1_pportdata *ppd) { - int i; + struct hfi1_devdata *dd = ppd->dd; - for (i = 0; i < nhwerrmsgs; i++) - if (hwerrs & hwerrmsgs[i].mask) - format_hwmsg(msg, msgl, hwerrmsgs[i].msg); + /* 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); } static void signal_ib_event(struct hfi1_pportdata *ppd, enum ib_event_type ev) @@ -102,9 +65,16 @@ 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 +121,18 @@ 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 = @@ -164,6 +146,7 @@ void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup) ppd->linkup = 0; /* clear HW details of the previous connection */ + ppd->actual_vls_operational = 0; reset_link_credits(dd); /* freeze after a link down to guarantee a clean egress */ @@ -196,7 +179,7 @@ void handle_user_interrupt(struct hfi1_ctxtdata *rcd) if (test_and_clear_bit(HFI1_CTXT_WAITING_RCV, &rcd->event_flags)) { wake_up_interruptible(&rcd->wait); - hfi1_rcvctrl(dd, HFI1_RCVCTRL_INTRAVAIL_DIS, rcd->ctxt); + hfi1_rcvctrl(dd, HFI1_RCVCTRL_INTRAVAIL_DIS, rcd); } else if (test_and_clear_bit(HFI1_CTXT_WAITING_URG, &rcd->event_flags)) { rcd->urgent++; |