1 /* 2 * Copyright (c) 2005 Cisco Systems. All rights reserved. 3 * 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: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 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. 22 * 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 30 * SOFTWARE. 31 * 32 * $Id$ 33 */ 34 35 #include "mthca_dev.h" 36 37 enum { 38 MTHCA_CATAS_POLL_INTERVAL = 5 * HZ, 39 40 MTHCA_CATAS_TYPE_INTERNAL = 0, 41 MTHCA_CATAS_TYPE_UPLINK = 3, 42 MTHCA_CATAS_TYPE_DDR = 4, 43 MTHCA_CATAS_TYPE_PARITY = 5, 44 }; 45 46 static DEFINE_SPINLOCK(catas_lock); 47 48 static void handle_catas(struct mthca_dev *dev) 49 { 50 struct ib_event event; 51 const char *type; 52 int i; 53 54 event.device = &dev->ib_dev; 55 event.event = IB_EVENT_DEVICE_FATAL; 56 event.element.port_num = 0; 57 58 ib_dispatch_event(&event); 59 60 switch (swab32(readl(dev->catas_err.map)) >> 24) { 61 case MTHCA_CATAS_TYPE_INTERNAL: 62 type = "internal error"; 63 break; 64 case MTHCA_CATAS_TYPE_UPLINK: 65 type = "uplink bus error"; 66 break; 67 case MTHCA_CATAS_TYPE_DDR: 68 type = "DDR data error"; 69 break; 70 case MTHCA_CATAS_TYPE_PARITY: 71 type = "internal parity error"; 72 break; 73 default: 74 type = "unknown error"; 75 break; 76 } 77 78 mthca_err(dev, "Catastrophic error detected: %s\n", type); 79 for (i = 0; i < dev->catas_err.size; ++i) 80 mthca_err(dev, " buf[%02x]: %08x\n", 81 i, swab32(readl(dev->catas_err.map + i))); 82 } 83 84 static void poll_catas(unsigned long dev_ptr) 85 { 86 struct mthca_dev *dev = (struct mthca_dev *) dev_ptr; 87 unsigned long flags; 88 int i; 89 90 for (i = 0; i < dev->catas_err.size; ++i) 91 if (readl(dev->catas_err.map + i)) { 92 handle_catas(dev); 93 return; 94 } 95 96 spin_lock_irqsave(&catas_lock, flags); 97 if (!dev->catas_err.stop) 98 mod_timer(&dev->catas_err.timer, 99 jiffies + MTHCA_CATAS_POLL_INTERVAL); 100 spin_unlock_irqrestore(&catas_lock, flags); 101 102 return; 103 } 104 105 void mthca_start_catas_poll(struct mthca_dev *dev) 106 { 107 unsigned long addr; 108 109 init_timer(&dev->catas_err.timer); 110 dev->catas_err.stop = 0; 111 dev->catas_err.map = NULL; 112 113 addr = pci_resource_start(dev->pdev, 0) + 114 ((pci_resource_len(dev->pdev, 0) - 1) & 115 dev->catas_err.addr); 116 117 if (!request_mem_region(addr, dev->catas_err.size * 4, 118 DRV_NAME)) { 119 mthca_warn(dev, "couldn't request catastrophic error region " 120 "at 0x%lx/0x%x\n", addr, dev->catas_err.size * 4); 121 return; 122 } 123 124 dev->catas_err.map = ioremap(addr, dev->catas_err.size * 4); 125 if (!dev->catas_err.map) { 126 mthca_warn(dev, "couldn't map catastrophic error region " 127 "at 0x%lx/0x%x\n", addr, dev->catas_err.size * 4); 128 release_mem_region(addr, dev->catas_err.size * 4); 129 return; 130 } 131 132 dev->catas_err.timer.data = (unsigned long) dev; 133 dev->catas_err.timer.function = poll_catas; 134 dev->catas_err.timer.expires = jiffies + MTHCA_CATAS_POLL_INTERVAL; 135 add_timer(&dev->catas_err.timer); 136 } 137 138 void mthca_stop_catas_poll(struct mthca_dev *dev) 139 { 140 spin_lock_irq(&catas_lock); 141 dev->catas_err.stop = 1; 142 spin_unlock_irq(&catas_lock); 143 144 del_timer_sync(&dev->catas_err.timer); 145 146 if (dev->catas_err.map) { 147 iounmap(dev->catas_err.map); 148 release_mem_region(pci_resource_start(dev->pdev, 0) + 149 ((pci_resource_len(dev->pdev, 0) - 1) & 150 dev->catas_err.addr), 151 dev->catas_err.size * 4); 152 } 153 } 154