From 3d155f8cd0d077938d271225d26ee52f8eb26082 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Thu, 27 Oct 2005 11:03:38 -0700 Subject: [PATCH] [IB] mthca: first pass at catastrophic error reporting Add some initial support for detecting and reporting catastrophic errors reported by Mellanox HCAs. We start a periodic timer which polls the catastrophic error reporting buffer in device memory. If an error is detected, we dump the contents of the buffer for port-mortem debugging, and report a fatal asynchronous error to higher levels. In the future we can try to recover from these errors by resetting the device, but this will require some work in higher-level code as well. Let's get this in now, so that we at least get catastrophic errors reported in logs. Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mthca/Makefile | 3 +- drivers/infiniband/hw/mthca/mthca_catas.c | 153 +++++++++++++++++++ drivers/infiniband/hw/mthca/mthca_cmd.c | 5 + drivers/infiniband/hw/mthca/mthca_dev.h | 13 ++ drivers/infiniband/hw/mthca/mthca_provider.c | 3 + 5 files changed, 176 insertions(+), 1 deletion(-) create mode 100644 drivers/infiniband/hw/mthca/mthca_catas.c diff --git a/drivers/infiniband/hw/mthca/Makefile b/drivers/infiniband/hw/mthca/Makefile index c44f7bae5424..47ec5a7cba0b 100644 --- a/drivers/infiniband/hw/mthca/Makefile +++ b/drivers/infiniband/hw/mthca/Makefile @@ -7,4 +7,5 @@ obj-$(CONFIG_INFINIBAND_MTHCA) += ib_mthca.o ib_mthca-y := mthca_main.o mthca_cmd.o mthca_profile.o mthca_reset.o \ mthca_allocator.o mthca_eq.o mthca_pd.o mthca_cq.o \ mthca_mr.o mthca_qp.o mthca_av.o mthca_mcg.o mthca_mad.o \ - mthca_provider.o mthca_memfree.o mthca_uar.o mthca_srq.o + mthca_provider.o mthca_memfree.o mthca_uar.o mthca_srq.o \ + mthca_catas.o diff --git a/drivers/infiniband/hw/mthca/mthca_catas.c b/drivers/infiniband/hw/mthca/mthca_catas.c new file mode 100644 index 000000000000..7ac52af43b99 --- /dev/null +++ b/drivers/infiniband/hw/mthca/mthca_catas.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 2005 Cisco Systems. 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. + * + * $Id$ + */ + +#include "mthca_dev.h" + +enum { + MTHCA_CATAS_POLL_INTERVAL = 5 * HZ, + + MTHCA_CATAS_TYPE_INTERNAL = 0, + MTHCA_CATAS_TYPE_UPLINK = 3, + MTHCA_CATAS_TYPE_DDR = 4, + MTHCA_CATAS_TYPE_PARITY = 5, +}; + +static DEFINE_SPINLOCK(catas_lock); + +static void handle_catas(struct mthca_dev *dev) +{ + struct ib_event event; + const char *type; + int i; + + event.device = &dev->ib_dev; + event.event = IB_EVENT_DEVICE_FATAL; + event.element.port_num = 0; + + ib_dispatch_event(&event); + + switch (swab32(readl(dev->catas_err.map)) >> 24) { + case MTHCA_CATAS_TYPE_INTERNAL: + type = "internal error"; + break; + case MTHCA_CATAS_TYPE_UPLINK: + type = "uplink bus error"; + break; + case MTHCA_CATAS_TYPE_DDR: + type = "DDR data error"; + break; + case MTHCA_CATAS_TYPE_PARITY: + type = "internal parity error"; + break; + default: + type = "unknown error"; + break; + } + + mthca_err(dev, "Catastrophic error detected: %s\n", type); + for (i = 0; i < dev->catas_err.size; ++i) + mthca_err(dev, " buf[%02x]: %08x\n", + i, swab32(readl(dev->catas_err.map + i))); +} + +static void poll_catas(unsigned long dev_ptr) +{ + struct mthca_dev *dev = (struct mthca_dev *) dev_ptr; + unsigned long flags; + int i; + + for (i = 0; i < dev->catas_err.size; ++i) + if (readl(dev->catas_err.map + i)) { + handle_catas(dev); + return; + } + + spin_lock_irqsave(&catas_lock, flags); + if (dev->catas_err.stop) + mod_timer(&dev->catas_err.timer, + jiffies + MTHCA_CATAS_POLL_INTERVAL); + spin_unlock_irqrestore(&catas_lock, flags); + + return; +} + +void mthca_start_catas_poll(struct mthca_dev *dev) +{ + unsigned long addr; + + init_timer(&dev->catas_err.timer); + dev->catas_err.stop = 0; + dev->catas_err.map = NULL; + + addr = pci_resource_start(dev->pdev, 0) + + ((pci_resource_len(dev->pdev, 0) - 1) & + dev->catas_err.addr); + + if (!request_mem_region(addr, dev->catas_err.size * 4, + DRV_NAME)) { + mthca_warn(dev, "couldn't request catastrophic error region " + "at 0x%lx/0x%x\n", addr, dev->catas_err.size * 4); + return; + } + + dev->catas_err.map = ioremap(addr, dev->catas_err.size * 4); + if (!dev->catas_err.map) { + mthca_warn(dev, "couldn't map catastrophic error region " + "at 0x%lx/0x%x\n", addr, dev->catas_err.size * 4); + release_mem_region(addr, dev->catas_err.size * 4); + return; + } + + dev->catas_err.timer.data = (unsigned long) dev; + dev->catas_err.timer.function = poll_catas; + dev->catas_err.timer.expires = jiffies + MTHCA_CATAS_POLL_INTERVAL; + add_timer(&dev->catas_err.timer); +} + +void mthca_stop_catas_poll(struct mthca_dev *dev) +{ + spin_lock_irq(&catas_lock); + dev->catas_err.stop = 1; + spin_unlock_irq(&catas_lock); + + del_timer_sync(&dev->catas_err.timer); + + if (dev->catas_err.map) { + iounmap(dev->catas_err.map); + release_mem_region(pci_resource_start(dev->pdev, 0) + + ((pci_resource_len(dev->pdev, 0) - 1) & + dev->catas_err.addr), + dev->catas_err.size * 4); + } +} diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c index 1bd7dc8f778c..9220473dbfbd 100644 --- a/drivers/infiniband/hw/mthca/mthca_cmd.c +++ b/drivers/infiniband/hw/mthca/mthca_cmd.c @@ -1,6 +1,7 @@ /* * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. * Copyright (c) 2005 Mellanox Technologies. All rights reserved. + * Copyright (c) 2005 Cisco Systems. 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 @@ -706,9 +707,13 @@ int mthca_QUERY_FW(struct mthca_dev *dev, u8 *status) MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET); dev->cmd.max_cmds = 1 << lg; + MTHCA_GET(dev->catas_err.addr, outbox, QUERY_FW_ERR_START_OFFSET); + MTHCA_GET(dev->catas_err.size, outbox, QUERY_FW_ERR_SIZE_OFFSET); mthca_dbg(dev, "FW version %012llx, max commands %d\n", (unsigned long long) dev->fw_ver, dev->cmd.max_cmds); + mthca_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x\n", + (unsigned long long) dev->catas_err.addr, dev->catas_err.size); if (mthca_is_memfree(dev)) { MTHCA_GET(dev->fw.arbel.fw_pages, outbox, QUERY_FW_SIZE_OFFSET); diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h index f106bac0f925..7e68bd4a3780 100644 --- a/drivers/infiniband/hw/mthca/mthca_dev.h +++ b/drivers/infiniband/hw/mthca/mthca_dev.h @@ -258,6 +258,14 @@ struct mthca_mcg_table { struct mthca_icm_table *table; }; +struct mthca_catas_err { + u64 addr; + u32 __iomem *map; + unsigned long stop; + u32 size; + struct timer_list timer; +}; + struct mthca_dev { struct ib_device ib_dev; struct pci_dev *pdev; @@ -318,6 +326,8 @@ struct mthca_dev { struct mthca_av_table av_table; struct mthca_mcg_table mcg_table; + struct mthca_catas_err catas_err; + struct mthca_uar driver_uar; struct mthca_db_table *db_tab; struct mthca_pd driver_pd; @@ -405,6 +415,9 @@ void mthca_cleanup_mcg_table(struct mthca_dev *dev); int mthca_register_device(struct mthca_dev *dev); void mthca_unregister_device(struct mthca_dev *dev); +void mthca_start_catas_poll(struct mthca_dev *dev); +void mthca_stop_catas_poll(struct mthca_dev *dev); + int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar); void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar); diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index 9e911a1ea415..1b9477edbd7b 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -1175,10 +1175,13 @@ int mthca_register_device(struct mthca_dev *dev) } } + mthca_start_catas_poll(dev); + return 0; } void mthca_unregister_device(struct mthca_dev *dev) { + mthca_stop_catas_poll(dev); ib_unregister_device(&dev->ib_dev); } -- 2.20.1