diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_intr.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_intr.c | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/drivers/infiniband/hw/qib/qib_intr.c b/drivers/infiniband/hw/qib/qib_intr.c deleted file mode 100644 index 93357823c6c0..000000000000 --- a/drivers/infiniband/hw/qib/qib_intr.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. - * All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * 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. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include <linux/pci.h> -#include <linux/delay.h> - -#include "qib.h" -#include "qib_common.h" - -/** - * qib_format_hwmsg - format a single hwerror message - * @msg: message buffer - * @msgl: length of message buffer - * @hwmsg: message to add to message buffer - */ -static void qib_format_hwmsg(char *msg, size_t msgl, const char *hwmsg) -{ - strlcat(msg, "[", msgl); - strlcat(msg, hwmsg, msgl); - strlcat(msg, "]", msgl); -} - -/** - * qib_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 qib_format_hwerrors(u64 hwerrs, const struct qib_hwerror_msgs *hwerrmsgs, - size_t nhwerrmsgs, char *msg, size_t msgl) -{ - int i; - - for (i = 0; i < nhwerrmsgs; i++) - if (hwerrs & hwerrmsgs[i].mask) - qib_format_hwmsg(msg, msgl, hwerrmsgs[i].msg); -} - -static void signal_ib_event(struct qib_pportdata *ppd, enum ib_event_type ev) -{ - struct ib_event event; - struct qib_devdata *dd = ppd->dd; - - event.device = &dd->verbs_dev.rdi.ibdev; - event.element.port_num = ppd->port; - event.event = ev; - ib_dispatch_event(&event); -} - -void qib_handle_e_ibstatuschanged(struct qib_pportdata *ppd, u64 ibcs) -{ - struct qib_devdata *dd = ppd->dd; - unsigned long flags; - u32 lstate; - u8 ltstate; - enum ib_event_type ev = 0; - - lstate = dd->f_iblink_state(ibcs); /* linkstate */ - ltstate = dd->f_ibphys_portstate(ibcs); - - /* - * If linkstate transitions into INIT from any of the various down - * states, or if it transitions from any of the up (INIT or better) - * states into any of the down states (except link recovery), then - * call the chip-specific code to take appropriate actions. - * - * ppd->lflags could be 0 if this is the first time the interrupt - * handlers has been called but the link is already up. - */ - if (lstate >= IB_PORT_INIT && - (!ppd->lflags || (ppd->lflags & QIBL_LINKDOWN)) && - ltstate == IB_PHYSPORTSTATE_LINKUP) { - /* transitioned to UP */ - if (dd->f_ib_updown(ppd, 1, ibcs)) - goto skip_ibchange; /* chip-code handled */ - } else if (ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED | - QIBL_LINKACTIVE | QIBL_IB_FORCE_NOTIFY)) { - if (ltstate != IB_PHYSPORTSTATE_LINKUP && - ltstate <= IB_PHYSPORTSTATE_CFG_TRAIN && - dd->f_ib_updown(ppd, 0, ibcs)) - goto skip_ibchange; /* chip-code handled */ - qib_set_uevent_bits(ppd, _QIB_EVENT_LINKDOWN_BIT); - } - - if (lstate != IB_PORT_DOWN) { - /* lstate is INIT, ARMED, or ACTIVE */ - if (lstate != IB_PORT_ACTIVE) { - *ppd->statusp &= ~QIB_STATUS_IB_READY; - if (ppd->lflags & QIBL_LINKACTIVE) - ev = IB_EVENT_PORT_ERR; - spin_lock_irqsave(&ppd->lflags_lock, flags); - if (lstate == IB_PORT_ARMED) { - ppd->lflags |= QIBL_LINKARMED | QIBL_LINKV; - ppd->lflags &= ~(QIBL_LINKINIT | - QIBL_LINKDOWN | QIBL_LINKACTIVE); - } else { - ppd->lflags |= QIBL_LINKINIT | QIBL_LINKV; - ppd->lflags &= ~(QIBL_LINKARMED | - QIBL_LINKDOWN | QIBL_LINKACTIVE); - } - spin_unlock_irqrestore(&ppd->lflags_lock, flags); - /* start a 75msec timer to clear symbol errors */ - mod_timer(&ppd->symerr_clear_timer, - msecs_to_jiffies(75)); - } else if (ltstate == IB_PHYSPORTSTATE_LINKUP && - !(ppd->lflags & QIBL_LINKACTIVE)) { - /* active, but not active defered */ - qib_hol_up(ppd); /* useful only for 6120 now */ - *ppd->statusp |= - QIB_STATUS_IB_READY | QIB_STATUS_IB_CONF; - qib_clear_symerror_on_linkup(&ppd->symerr_clear_timer); - spin_lock_irqsave(&ppd->lflags_lock, flags); - ppd->lflags |= QIBL_LINKACTIVE | QIBL_LINKV; - ppd->lflags &= ~(QIBL_LINKINIT | - QIBL_LINKDOWN | QIBL_LINKARMED); - spin_unlock_irqrestore(&ppd->lflags_lock, flags); - if (dd->flags & QIB_HAS_SEND_DMA) - qib_sdma_process_event(ppd, - qib_sdma_event_e30_go_running); - ev = IB_EVENT_PORT_ACTIVE; - dd->f_setextled(ppd, 1); - } - } else { /* down */ - if (ppd->lflags & QIBL_LINKACTIVE) - ev = IB_EVENT_PORT_ERR; - spin_lock_irqsave(&ppd->lflags_lock, flags); - ppd->lflags |= QIBL_LINKDOWN | QIBL_LINKV; - ppd->lflags &= ~(QIBL_LINKINIT | - QIBL_LINKACTIVE | QIBL_LINKARMED); - spin_unlock_irqrestore(&ppd->lflags_lock, flags); - *ppd->statusp &= ~QIB_STATUS_IB_READY; - } - -skip_ibchange: - ppd->lastibcstat = ibcs; - if (ev) - signal_ib_event(ppd, ev); -} - -void qib_clear_symerror_on_linkup(struct timer_list *t) -{ - struct qib_pportdata *ppd = timer_container_of(ppd, t, - symerr_clear_timer); - - if (ppd->lflags & QIBL_LINKACTIVE) - return; - - ppd->ibport_data.z_symbol_error_counter = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBSYMBOLERR); -} - -/* - * Handle receive interrupts for user ctxts; this means a user - * process was waiting for a packet to arrive, and didn't want - * to poll. - */ -void qib_handle_urcv(struct qib_devdata *dd, u64 ctxtr) -{ - struct qib_ctxtdata *rcd; - unsigned long flags; - int i; - - spin_lock_irqsave(&dd->uctxt_lock, flags); - for (i = dd->first_user_ctxt; dd->rcd && i < dd->cfgctxts; i++) { - if (!(ctxtr & (1ULL << i))) - continue; - rcd = dd->rcd[i]; - if (!rcd || !rcd->cnt) - continue; - - if (test_and_clear_bit(QIB_CTXT_WAITING_RCV, &rcd->flag)) { - wake_up_interruptible(&rcd->wait); - dd->f_rcvctrl(rcd->ppd, QIB_RCVCTRL_INTRAVAIL_DIS, - rcd->ctxt); - } else if (test_and_clear_bit(QIB_CTXT_WAITING_URG, - &rcd->flag)) { - rcd->urgent++; - wake_up_interruptible(&rcd->wait); - } - } - spin_unlock_irqrestore(&dd->uctxt_lock, flags); -} - -void qib_bad_intrstatus(struct qib_devdata *dd) -{ - static int allbits; - - /* separate routine, for better optimization of qib_intr() */ - - /* - * We print the message and disable interrupts, in hope of - * having a better chance of debugging the problem. - */ - qib_dev_err(dd, - "Read of chip interrupt status failed disabling interrupts\n"); - if (allbits++) { - /* disable interrupt delivery, something is very wrong */ - if (allbits == 2) - dd->f_set_intr_state(dd, 0); - if (allbits == 3) { - qib_dev_err(dd, - "2nd bad interrupt status, unregistering interrupts\n"); - dd->flags |= QIB_BADINTR; - dd->flags &= ~QIB_INITTED; - dd->f_free_irq(dd); - } - } -} |