2 * Copyright (c) 2005 Cisco Systems. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include <linux/jiffies.h>
36 #include <linux/timer.h>
38 #include "mthca_dev.h"
41 MTHCA_CATAS_POLL_INTERVAL = 5 * HZ,
43 MTHCA_CATAS_TYPE_INTERNAL = 0,
44 MTHCA_CATAS_TYPE_UPLINK = 3,
45 MTHCA_CATAS_TYPE_DDR = 4,
46 MTHCA_CATAS_TYPE_PARITY = 5,
49 static DEFINE_SPINLOCK(catas_lock);
51 static void handle_catas(struct mthca_dev *dev)
53 struct ib_event event;
57 event.device = &dev->ib_dev;
58 event.event = IB_EVENT_DEVICE_FATAL;
59 event.element.port_num = 0;
61 ib_dispatch_event(&event);
63 switch (swab32(readl(dev->catas_err.map)) >> 24) {
64 case MTHCA_CATAS_TYPE_INTERNAL:
65 type = "internal error";
67 case MTHCA_CATAS_TYPE_UPLINK:
68 type = "uplink bus error";
70 case MTHCA_CATAS_TYPE_DDR:
71 type = "DDR data error";
73 case MTHCA_CATAS_TYPE_PARITY:
74 type = "internal parity error";
77 type = "unknown error";
81 mthca_err(dev, "Catastrophic error detected: %s\n", type);
82 for (i = 0; i < dev->catas_err.size; ++i)
83 mthca_err(dev, " buf[%02x]: %08x\n",
84 i, swab32(readl(dev->catas_err.map + i)));
87 static void poll_catas(unsigned long dev_ptr)
89 struct mthca_dev *dev = (struct mthca_dev *) dev_ptr;
93 for (i = 0; i < dev->catas_err.size; ++i)
94 if (readl(dev->catas_err.map + i)) {
99 spin_lock_irqsave(&catas_lock, flags);
100 if (!dev->catas_err.stop)
101 mod_timer(&dev->catas_err.timer,
102 jiffies + MTHCA_CATAS_POLL_INTERVAL);
103 spin_unlock_irqrestore(&catas_lock, flags);
108 void mthca_start_catas_poll(struct mthca_dev *dev)
112 init_timer(&dev->catas_err.timer);
113 dev->catas_err.stop = 0;
114 dev->catas_err.map = NULL;
116 addr = pci_resource_start(dev->pdev, 0) +
117 ((pci_resource_len(dev->pdev, 0) - 1) &
118 dev->catas_err.addr);
120 if (!request_mem_region(addr, dev->catas_err.size * 4,
122 mthca_warn(dev, "couldn't request catastrophic error region "
123 "at 0x%lx/0x%x\n", addr, dev->catas_err.size * 4);
127 dev->catas_err.map = ioremap(addr, dev->catas_err.size * 4);
128 if (!dev->catas_err.map) {
129 mthca_warn(dev, "couldn't map catastrophic error region "
130 "at 0x%lx/0x%x\n", addr, dev->catas_err.size * 4);
131 release_mem_region(addr, dev->catas_err.size * 4);
135 dev->catas_err.timer.data = (unsigned long) dev;
136 dev->catas_err.timer.function = poll_catas;
137 dev->catas_err.timer.expires = jiffies + MTHCA_CATAS_POLL_INTERVAL;
138 add_timer(&dev->catas_err.timer);
141 void mthca_stop_catas_poll(struct mthca_dev *dev)
143 spin_lock_irq(&catas_lock);
144 dev->catas_err.stop = 1;
145 spin_unlock_irq(&catas_lock);
147 del_timer_sync(&dev->catas_err.timer);
149 if (dev->catas_err.map) {
150 iounmap(dev->catas_err.map);
151 release_mem_region(pci_resource_start(dev->pdev, 0) +
152 ((pci_resource_len(dev->pdev, 0) - 1) &
153 dev->catas_err.addr),
154 dev->catas_err.size * 4);