[deliverable/linux.git] / drivers / infiniband / hw / mthca / mthca_catas.c

/*
 * 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);
	}
}
Commit	Line	Data
3d155f8c RD	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	}