diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/intr.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/intr.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/drivers/staging/rdma/hfi1/intr.c b/drivers/staging/rdma/hfi1/intr.c deleted file mode 100644 index 65348d16ab2f..000000000000 --- a/drivers/staging/rdma/hfi1/intr.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * 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> -#include <linux/delay.h> - -#include "hfi.h" -#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) -{ - strlcat(msg, "[", msgl); - strlcat(msg, hwmsg, msgl); - strlcat(msg, "]", msgl); -} - -/** - * 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 - */ -void hfi1_format_hwerrors(u64 hwerrs, const struct hfi1_hwerror_msgs *hwerrmsgs, - size_t nhwerrmsgs, char *msg, size_t msgl) -{ - int i; - - for (i = 0; i < nhwerrmsgs; i++) - if (hwerrs & hwerrmsgs[i].mask) - format_hwmsg(msg, msgl, hwerrmsgs[i].msg); -} - -static void signal_ib_event(struct hfi1_pportdata *ppd, enum ib_event_type ev) -{ - struct ib_event event; - struct hfi1_devdata *dd = ppd->dd; - - /* - * Only call ib_dispatch_event() if the IB device has been - * registered. HFI1_INITED is set iff the driver has successfully - * registered with the IB core. - */ - if (!(dd->flags & HFI1_INITTED)) - return; - event.device = &dd->verbs_dev.rdi.ibdev; - event.element.port_num = ppd->port; - event.event = ev; - ib_dispatch_event(&event); -} - -/* - * Handle a linkup or link down notification. - * This is called outside an interrupt. - */ -void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup) -{ - struct hfi1_pportdata *ppd = &dd->pport[0]; - enum ib_event_type ev; - - if (!(ppd->linkup ^ !!linkup)) - return; /* no change, nothing to do */ - - if (linkup) { - /* - * Quick linkup and all link up on the simulator does not - * trigger or implement: - * - VerifyCap interrupt - * - VerifyCap frames - * But rather moves directly to LinkUp. - * - * Do the work of the VerifyCap interrupt handler, - * handle_verify_cap(), but do not try moving the state to - * LinkUp as we are already there. - * - * NOTE: This uses this device's vAU, vCU, and vl15_init for - * the remote values. Both sides must be using the values. - */ - if (quick_linkup || dd->icode == ICODE_FUNCTIONAL_SIMULATOR) { - set_up_vl15(dd, dd->vau, dd->vl15_init); - assign_remote_cm_au_table(dd, dd->vcu); - ppd->neighbor_guid = - read_csr(dd, DC_DC8051_STS_REMOTE_GUID); - ppd->neighbor_type = - read_csr(dd, DC_DC8051_STS_REMOTE_NODE_TYPE) & - DC_DC8051_STS_REMOTE_NODE_TYPE_VAL_MASK; - ppd->neighbor_port_number = - read_csr(dd, DC_DC8051_STS_REMOTE_PORT_NO) & - DC_DC8051_STS_REMOTE_PORT_NO_VAL_SMASK; - dd_dev_info(dd, "Neighbor GUID: %llx Neighbor type %d\n", - ppd->neighbor_guid, - ppd->neighbor_type); - } - - /* physical link went up */ - ppd->linkup = 1; - ppd->offline_disabled_reason = - HFI1_ODR_MASK(OPA_LINKDOWN_REASON_NONE); - - /* link widths are not available until the link is fully up */ - get_linkup_link_widths(ppd); - - } else { - /* physical link went down */ - ppd->linkup = 0; - - /* clear HW details of the previous connection */ - reset_link_credits(dd); - - /* freeze after a link down to guarantee a clean egress */ - start_freeze_handling(ppd, FREEZE_SELF | FREEZE_LINK_DOWN); - - ev = IB_EVENT_PORT_ERR; - - hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LINKDOWN_BIT); - - /* if we are down, the neighbor is down */ - ppd->neighbor_normal = 0; - - /* notify IB of the link change */ - signal_ib_event(ppd, ev); - } -} - -/* - * Handle receive or urgent interrupts for user contexts. This means a user - * process was waiting for a packet to arrive, and didn't want to poll. - */ -void handle_user_interrupt(struct hfi1_ctxtdata *rcd) -{ - struct hfi1_devdata *dd = rcd->dd; - unsigned long flags; - - spin_lock_irqsave(&dd->uctxt_lock, flags); - if (!rcd->cnt) - goto done; - - 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); - } else if (test_and_clear_bit(HFI1_CTXT_WAITING_URG, - &rcd->event_flags)) { - rcd->urgent++; - wake_up_interruptible(&rcd->wait); - } -done: - spin_unlock_irqrestore(&dd->uctxt_lock, flags); -} |