2 * Copyright (c) 2013-2015, Mellanox Technologies. 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
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/random.h>
36 #include <linux/vmalloc.h>
37 #include <linux/hardirq.h>
38 #include <linux/mlx5/driver.h>
39 #include <linux/mlx5/cmd.h>
40 #include "mlx5_core.h"
45 MLX5_HEALTH_POLL_INTERVAL
= 2 * HZ
,
50 MLX5_HEALTH_SYNDR_FW_ERR
= 0x1,
51 MLX5_HEALTH_SYNDR_IRISC_ERR
= 0x7,
52 MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR
= 0x8,
53 MLX5_HEALTH_SYNDR_CRC_ERR
= 0x9,
54 MLX5_HEALTH_SYNDR_FETCH_PCI_ERR
= 0xa,
55 MLX5_HEALTH_SYNDR_HW_FTL_ERR
= 0xb,
56 MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR
= 0xc,
57 MLX5_HEALTH_SYNDR_EQ_ERR
= 0xd,
58 MLX5_HEALTH_SYNDR_EQ_INV
= 0xe,
59 MLX5_HEALTH_SYNDR_FFSER_ERR
= 0xf,
60 MLX5_HEALTH_SYNDR_HIGH_TEMP
= 0x10
64 MLX5_DROP_NEW_HEALTH_WORK
,
65 MLX5_DROP_NEW_RECOVERY_WORK
,
68 u8
mlx5_get_nic_state(struct mlx5_core_dev
*dev
)
70 return (ioread32be(&dev
->iseg
->cmdq_addr_l_sz
) >> 8) & 3;
73 void mlx5_set_nic_state(struct mlx5_core_dev
*dev
, u8 state
)
75 u32 cur_cmdq_addr_l_sz
;
77 cur_cmdq_addr_l_sz
= ioread32be(&dev
->iseg
->cmdq_addr_l_sz
);
78 iowrite32be((cur_cmdq_addr_l_sz
& 0xFFFFF000) |
79 state
<< MLX5_NIC_IFC_OFFSET
,
80 &dev
->iseg
->cmdq_addr_l_sz
);
83 static int in_fatal(struct mlx5_core_dev
*dev
)
85 struct mlx5_core_health
*health
= &dev
->priv
.health
;
86 struct health_buffer __iomem
*h
= health
->health
;
88 if (mlx5_get_nic_state(dev
) == MLX5_NIC_IFC_DISABLED
)
91 if (ioread32be(&h
->fw_ver
) == 0xffffffff)
97 void mlx5_enter_error_state(struct mlx5_core_dev
*dev
, bool force
)
99 mutex_lock(&dev
->intf_state_mutex
);
100 if (dev
->state
== MLX5_DEVICE_STATE_INTERNAL_ERROR
)
103 mlx5_core_err(dev
, "start\n");
104 if (pci_channel_offline(dev
->pdev
) || in_fatal(dev
) || force
) {
105 dev
->state
= MLX5_DEVICE_STATE_INTERNAL_ERROR
;
109 mlx5_notifier_call_chain(dev
->priv
.events
, MLX5_DEV_EVENT_SYS_ERROR
, (void *)1);
110 mlx5_core_err(dev
, "end\n");
113 mutex_unlock(&dev
->intf_state_mutex
);
116 static void mlx5_handle_bad_state(struct mlx5_core_dev
*dev
)
118 u8 nic_interface
= mlx5_get_nic_state(dev
);
120 switch (nic_interface
) {
121 case MLX5_NIC_IFC_FULL
:
122 mlx5_core_warn(dev
, "Expected to see disabled NIC but it is full driver\n");
125 case MLX5_NIC_IFC_DISABLED
:
126 mlx5_core_warn(dev
, "starting teardown\n");
129 case MLX5_NIC_IFC_NO_DRAM_NIC
:
130 mlx5_core_warn(dev
, "Expected to see disabled NIC but it is no dram nic\n");
133 mlx5_core_warn(dev
, "Expected to see disabled NIC but it is has invalid value %d\n",
137 mlx5_disable_device(dev
);
140 static void health_recover(struct work_struct
*work
)
142 struct mlx5_core_health
*health
;
143 struct delayed_work
*dwork
;
144 struct mlx5_core_dev
*dev
;
145 struct mlx5_priv
*priv
;
148 dwork
= container_of(work
, struct delayed_work
, work
);
149 health
= container_of(dwork
, struct mlx5_core_health
, recover_work
);
150 priv
= container_of(health
, struct mlx5_priv
, health
);
151 dev
= container_of(priv
, struct mlx5_core_dev
, priv
);
153 nic_state
= mlx5_get_nic_state(dev
);
154 if (nic_state
== MLX5_NIC_IFC_INVALID
) {
155 dev_err(&dev
->pdev
->dev
, "health recovery flow aborted since the nic state is invalid\n");
159 dev_err(&dev
->pdev
->dev
, "starting health recovery flow\n");
160 mlx5_recover_device(dev
);
163 /* How much time to wait until health resetting the driver (in msecs) */
164 #define MLX5_RECOVERY_DELAY_MSECS 60000
165 static void health_care(struct work_struct
*work
)
167 unsigned long recover_delay
= msecs_to_jiffies(MLX5_RECOVERY_DELAY_MSECS
);
168 struct mlx5_core_health
*health
;
169 struct mlx5_core_dev
*dev
;
170 struct mlx5_priv
*priv
;
173 health
= container_of(work
, struct mlx5_core_health
, work
);
174 priv
= container_of(health
, struct mlx5_priv
, health
);
175 dev
= container_of(priv
, struct mlx5_core_dev
, priv
);
176 mlx5_core_warn(dev
, "handling bad device here\n");
177 mlx5_handle_bad_state(dev
);
179 spin_lock_irqsave(&health
->wq_lock
, flags
);
180 if (!test_bit(MLX5_DROP_NEW_RECOVERY_WORK
, &health
->flags
))
181 schedule_delayed_work(&health
->recover_work
, recover_delay
);
183 dev_err(&dev
->pdev
->dev
,
184 "new health works are not permitted at this stage\n");
185 spin_unlock_irqrestore(&health
->wq_lock
, flags
);
188 static const char *hsynd_str(u8 synd
)
191 case MLX5_HEALTH_SYNDR_FW_ERR
:
192 return "firmware internal error";
193 case MLX5_HEALTH_SYNDR_IRISC_ERR
:
194 return "irisc not responding";
195 case MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR
:
196 return "unrecoverable hardware error";
197 case MLX5_HEALTH_SYNDR_CRC_ERR
:
198 return "firmware CRC error";
199 case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR
:
200 return "ICM fetch PCI error";
201 case MLX5_HEALTH_SYNDR_HW_FTL_ERR
:
202 return "HW fatal error\n";
203 case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR
:
204 return "async EQ buffer overrun";
205 case MLX5_HEALTH_SYNDR_EQ_ERR
:
207 case MLX5_HEALTH_SYNDR_EQ_INV
:
208 return "Invalid EQ referenced";
209 case MLX5_HEALTH_SYNDR_FFSER_ERR
:
210 return "FFSER error";
211 case MLX5_HEALTH_SYNDR_HIGH_TEMP
:
212 return "High temperature";
214 return "unrecognized error";
218 static void print_health_info(struct mlx5_core_dev
*dev
)
220 struct mlx5_core_health
*health
= &dev
->priv
.health
;
221 struct health_buffer __iomem
*h
= health
->health
;
226 /* If the syndrome is 0, the device is OK and no need to print buffer */
227 if (!ioread8(&h
->synd
))
230 for (i
= 0; i
< ARRAY_SIZE(h
->assert_var
); i
++)
231 dev_err(&dev
->pdev
->dev
, "assert_var[%d] 0x%08x\n", i
, ioread32be(h
->assert_var
+ i
));
233 dev_err(&dev
->pdev
->dev
, "assert_exit_ptr 0x%08x\n", ioread32be(&h
->assert_exit_ptr
));
234 dev_err(&dev
->pdev
->dev
, "assert_callra 0x%08x\n", ioread32be(&h
->assert_callra
));
235 sprintf(fw_str
, "%d.%d.%d", fw_rev_maj(dev
), fw_rev_min(dev
), fw_rev_sub(dev
));
236 dev_err(&dev
->pdev
->dev
, "fw_ver %s\n", fw_str
);
237 dev_err(&dev
->pdev
->dev
, "hw_id 0x%08x\n", ioread32be(&h
->hw_id
));
238 dev_err(&dev
->pdev
->dev
, "irisc_index %d\n", ioread8(&h
->irisc_index
));
239 dev_err(&dev
->pdev
->dev
, "synd 0x%x: %s\n", ioread8(&h
->synd
), hsynd_str(ioread8(&h
->synd
)));
240 dev_err(&dev
->pdev
->dev
, "ext_synd 0x%04x\n", ioread16be(&h
->ext_synd
));
241 fw
= ioread32be(&h
->fw_ver
);
242 dev_err(&dev
->pdev
->dev
, "raw fw_ver 0x%08x\n", fw
);
245 static unsigned long get_next_poll_jiffies(void)
249 get_random_bytes(&next
, sizeof(next
));
251 next
+= jiffies
+ MLX5_HEALTH_POLL_INTERVAL
;
256 void mlx5_trigger_health_work(struct mlx5_core_dev
*dev
)
258 struct mlx5_core_health
*health
= &dev
->priv
.health
;
261 spin_lock_irqsave(&health
->wq_lock
, flags
);
262 if (!test_bit(MLX5_DROP_NEW_HEALTH_WORK
, &health
->flags
))
263 queue_work(health
->wq
, &health
->work
);
265 dev_err(&dev
->pdev
->dev
,
266 "new health works are not permitted at this stage\n");
267 spin_unlock_irqrestore(&health
->wq_lock
, flags
);
270 static void poll_health(struct timer_list
*t
)
272 struct mlx5_core_dev
*dev
= from_timer(dev
, t
, priv
.health
.timer
);
273 struct mlx5_core_health
*health
= &dev
->priv
.health
;
276 if (dev
->state
== MLX5_DEVICE_STATE_INTERNAL_ERROR
)
279 count
= ioread32be(health
->health_counter
);
280 if (count
== health
->prev
)
281 ++health
->miss_counter
;
283 health
->miss_counter
= 0;
285 health
->prev
= count
;
286 if (health
->miss_counter
== MAX_MISSES
) {
287 dev_err(&dev
->pdev
->dev
, "device's health compromised - reached miss count\n");
288 print_health_info(dev
);
291 if (in_fatal(dev
) && !health
->sick
) {
293 print_health_info(dev
);
294 mlx5_trigger_health_work(dev
);
298 mod_timer(&health
->timer
, get_next_poll_jiffies());
301 void mlx5_start_health_poll(struct mlx5_core_dev
*dev
)
303 struct mlx5_core_health
*health
= &dev
->priv
.health
;
305 timer_setup(&health
->timer
, poll_health
, 0);
307 clear_bit(MLX5_DROP_NEW_HEALTH_WORK
, &health
->flags
);
308 clear_bit(MLX5_DROP_NEW_RECOVERY_WORK
, &health
->flags
);
309 health
->health
= &dev
->iseg
->health
;
310 health
->health_counter
= &dev
->iseg
->health_counter
;
312 health
->timer
.expires
= round_jiffies(jiffies
+ MLX5_HEALTH_POLL_INTERVAL
);
313 add_timer(&health
->timer
);
316 void mlx5_stop_health_poll(struct mlx5_core_dev
*dev
, bool disable_health
)
318 struct mlx5_core_health
*health
= &dev
->priv
.health
;
321 if (disable_health
) {
322 spin_lock_irqsave(&health
->wq_lock
, flags
);
323 set_bit(MLX5_DROP_NEW_HEALTH_WORK
, &health
->flags
);
324 set_bit(MLX5_DROP_NEW_RECOVERY_WORK
, &health
->flags
);
325 spin_unlock_irqrestore(&health
->wq_lock
, flags
);
328 del_timer_sync(&health
->timer
);
331 void mlx5_drain_health_wq(struct mlx5_core_dev
*dev
)
333 struct mlx5_core_health
*health
= &dev
->priv
.health
;
336 spin_lock_irqsave(&health
->wq_lock
, flags
);
337 set_bit(MLX5_DROP_NEW_HEALTH_WORK
, &health
->flags
);
338 set_bit(MLX5_DROP_NEW_RECOVERY_WORK
, &health
->flags
);
339 spin_unlock_irqrestore(&health
->wq_lock
, flags
);
340 cancel_delayed_work_sync(&health
->recover_work
);
341 cancel_work_sync(&health
->work
);
344 void mlx5_drain_health_recovery(struct mlx5_core_dev
*dev
)
346 struct mlx5_core_health
*health
= &dev
->priv
.health
;
349 spin_lock_irqsave(&health
->wq_lock
, flags
);
350 set_bit(MLX5_DROP_NEW_RECOVERY_WORK
, &health
->flags
);
351 spin_unlock_irqrestore(&health
->wq_lock
, flags
);
352 cancel_delayed_work_sync(&dev
->priv
.health
.recover_work
);
355 void mlx5_health_cleanup(struct mlx5_core_dev
*dev
)
357 struct mlx5_core_health
*health
= &dev
->priv
.health
;
359 destroy_workqueue(health
->wq
);
362 int mlx5_health_init(struct mlx5_core_dev
*dev
)
364 struct mlx5_core_health
*health
;
367 health
= &dev
->priv
.health
;
368 name
= kmalloc(64, GFP_KERNEL
);
372 strcpy(name
, "mlx5_health");
373 strcat(name
, dev_name(&dev
->pdev
->dev
));
374 health
->wq
= create_singlethread_workqueue(name
);
378 spin_lock_init(&health
->wq_lock
);
379 INIT_WORK(&health
->work
, health_care
);
380 INIT_DELAYED_WORK(&health
->recover_work
, health_recover
);