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[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 <rolandd@cisco.com>
hifive-unleashed-5.1
Roland Dreier 2005-10-27 11:03:38 -07:00
parent 7cc656efb5
commit 3d155f8cd0
5 changed files with 176 additions and 1 deletions
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3
drivers/infiniband/hw/mthca/Makefile
View File

@ -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

153
drivers/infiniband/hw/mthca/mthca_catas.c 100644
View File

@ -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);
}
}

5
drivers/infiniband/hw/mthca/mthca_cmd.c
View File

@ -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);

13
drivers/infiniband/hw/mthca/mthca_dev.h
View File

@ -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);

3
drivers/infiniband/hw/mthca/mthca_provider.c
View File

@ -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);
}