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"
43 MLX5_HEALTH_POLL_INTERVAL = 2 * HZ,
48 MLX5_HEALTH_SYNDR_FW_ERR = 0x1,
49 MLX5_HEALTH_SYNDR_IRISC_ERR = 0x7,
50 MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR = 0x8,
51 MLX5_HEALTH_SYNDR_CRC_ERR = 0x9,
52 MLX5_HEALTH_SYNDR_FETCH_PCI_ERR = 0xa,
53 MLX5_HEALTH_SYNDR_HW_FTL_ERR = 0xb,
54 MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR = 0xc,
55 MLX5_HEALTH_SYNDR_EQ_ERR = 0xd,
56 MLX5_HEALTH_SYNDR_EQ_INV = 0xe,
57 MLX5_HEALTH_SYNDR_FFSER_ERR = 0xf,
58 MLX5_HEALTH_SYNDR_HIGH_TEMP = 0x10
62 MLX5_NIC_IFC_FULL = 0,
63 MLX5_NIC_IFC_DISABLED = 1,
64 MLX5_NIC_IFC_NO_DRAM_NIC = 2
67 static u8 get_nic_interface(struct mlx5_core_dev *dev)
69 return (ioread32be(&dev->iseg->cmdq_addr_l_sz) >> 8) & 3;
72 static void trigger_cmd_completions(struct mlx5_core_dev *dev)
77 /* wait for pending handlers to complete */
78 synchronize_irq(dev->priv.msix_arr[MLX5_EQ_VEC_CMD].vector);
79 spin_lock_irqsave(&dev->cmd.alloc_lock, flags);
80 vector = ~dev->cmd.bitmask & ((1ul << (1 << dev->cmd.log_sz)) - 1);
84 vector |= MLX5_TRIGGERED_CMD_COMP;
85 spin_unlock_irqrestore(&dev->cmd.alloc_lock, flags);
87 mlx5_core_dbg(dev, "vector 0x%llx\n", vector);
88 mlx5_cmd_comp_handler(dev, vector);
92 spin_unlock_irqrestore(&dev->cmd.alloc_lock, flags);
95 static int in_fatal(struct mlx5_core_dev *dev)
97 struct mlx5_core_health *health = &dev->priv.health;
98 struct health_buffer __iomem *h = health->health;
100 if (get_nic_interface(dev) == MLX5_NIC_IFC_DISABLED)
103 if (ioread32be(&h->fw_ver) == 0xffffffff)
109 void mlx5_enter_error_state(struct mlx5_core_dev *dev)
111 mutex_lock(&dev->intf_state_mutex);
112 if (dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
115 mlx5_core_err(dev, "start\n");
116 if (pci_channel_offline(dev->pdev) || in_fatal(dev)) {
117 dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
118 trigger_cmd_completions(dev);
121 mlx5_core_event(dev, MLX5_DEV_EVENT_SYS_ERROR, 0);
122 mlx5_core_err(dev, "end\n");
125 mutex_unlock(&dev->intf_state_mutex);
128 static void mlx5_handle_bad_state(struct mlx5_core_dev *dev)
130 u8 nic_interface = get_nic_interface(dev);
132 switch (nic_interface) {
133 case MLX5_NIC_IFC_FULL:
134 mlx5_core_warn(dev, "Expected to see disabled NIC but it is full driver\n");
137 case MLX5_NIC_IFC_DISABLED:
138 mlx5_core_warn(dev, "starting teardown\n");
141 case MLX5_NIC_IFC_NO_DRAM_NIC:
142 mlx5_core_warn(dev, "Expected to see disabled NIC but it is no dram nic\n");
145 mlx5_core_warn(dev, "Expected to see disabled NIC but it is has invalid value %d\n",
149 mlx5_disable_device(dev);
152 static void health_care(struct work_struct *work)
154 struct mlx5_core_health *health;
155 struct mlx5_core_dev *dev;
156 struct mlx5_priv *priv;
158 health = container_of(work, struct mlx5_core_health, work);
159 priv = container_of(health, struct mlx5_priv, health);
160 dev = container_of(priv, struct mlx5_core_dev, priv);
161 mlx5_core_warn(dev, "handling bad device here\n");
162 mlx5_handle_bad_state(dev);
165 static const char *hsynd_str(u8 synd)
168 case MLX5_HEALTH_SYNDR_FW_ERR:
169 return "firmware internal error";
170 case MLX5_HEALTH_SYNDR_IRISC_ERR:
171 return "irisc not responding";
172 case MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR:
173 return "unrecoverable hardware error";
174 case MLX5_HEALTH_SYNDR_CRC_ERR:
175 return "firmware CRC error";
176 case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR:
177 return "ICM fetch PCI error";
178 case MLX5_HEALTH_SYNDR_HW_FTL_ERR:
179 return "HW fatal error\n";
180 case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR:
181 return "async EQ buffer overrun";
182 case MLX5_HEALTH_SYNDR_EQ_ERR:
184 case MLX5_HEALTH_SYNDR_EQ_INV:
185 return "Invalid EQ referenced";
186 case MLX5_HEALTH_SYNDR_FFSER_ERR:
187 return "FFSER error";
188 case MLX5_HEALTH_SYNDR_HIGH_TEMP:
189 return "High temperature";
191 return "unrecognized error";
195 static u16 get_maj(u32 fw)
200 static u16 get_min(u32 fw)
202 return fw >> 16 & 0xfff;
205 static u16 get_sub(u32 fw)
210 static void print_health_info(struct mlx5_core_dev *dev)
212 struct mlx5_core_health *health = &dev->priv.health;
213 struct health_buffer __iomem *h = health->health;
218 /* If the syndrom is 0, the device is OK and no need to print buffer */
219 if (!ioread8(&h->synd))
222 for (i = 0; i < ARRAY_SIZE(h->assert_var); i++)
223 dev_err(&dev->pdev->dev, "assert_var[%d] 0x%08x\n", i, ioread32be(h->assert_var + i));
225 dev_err(&dev->pdev->dev, "assert_exit_ptr 0x%08x\n", ioread32be(&h->assert_exit_ptr));
226 dev_err(&dev->pdev->dev, "assert_callra 0x%08x\n", ioread32be(&h->assert_callra));
227 fw = ioread32be(&h->fw_ver);
228 sprintf(fw_str, "%d.%d.%d", get_maj(fw), get_min(fw), get_sub(fw));
229 dev_err(&dev->pdev->dev, "fw_ver %s\n", fw_str);
230 dev_err(&dev->pdev->dev, "hw_id 0x%08x\n", ioread32be(&h->hw_id));
231 dev_err(&dev->pdev->dev, "irisc_index %d\n", ioread8(&h->irisc_index));
232 dev_err(&dev->pdev->dev, "synd 0x%x: %s\n", ioread8(&h->synd), hsynd_str(ioread8(&h->synd)));
233 dev_err(&dev->pdev->dev, "ext_synd 0x%04x\n", ioread16be(&h->ext_synd));
236 static unsigned long get_next_poll_jiffies(void)
240 get_random_bytes(&next, sizeof(next));
242 next += jiffies + MLX5_HEALTH_POLL_INTERVAL;
247 static void poll_health(unsigned long data)
249 struct mlx5_core_dev *dev = (struct mlx5_core_dev *)data;
250 struct mlx5_core_health *health = &dev->priv.health;
253 if (dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
254 mod_timer(&health->timer, get_next_poll_jiffies());
258 count = ioread32be(health->health_counter);
259 if (count == health->prev)
260 ++health->miss_counter;
262 health->miss_counter = 0;
264 health->prev = count;
265 if (health->miss_counter == MAX_MISSES) {
266 dev_err(&dev->pdev->dev, "device's health compromised - reached miss count\n");
267 print_health_info(dev);
269 mod_timer(&health->timer, get_next_poll_jiffies());
272 if (in_fatal(dev) && !health->sick) {
274 print_health_info(dev);
275 schedule_work(&health->work);
279 void mlx5_start_health_poll(struct mlx5_core_dev *dev)
281 struct mlx5_core_health *health = &dev->priv.health;
283 init_timer(&health->timer);
284 health->health = &dev->iseg->health;
285 health->health_counter = &dev->iseg->health_counter;
287 health->timer.data = (unsigned long)dev;
288 health->timer.function = poll_health;
289 health->timer.expires = round_jiffies(jiffies + MLX5_HEALTH_POLL_INTERVAL);
290 add_timer(&health->timer);
293 void mlx5_stop_health_poll(struct mlx5_core_dev *dev)
295 struct mlx5_core_health *health = &dev->priv.health;
297 del_timer_sync(&health->timer);
300 void mlx5_health_cleanup(struct mlx5_core_dev *dev)
302 struct mlx5_core_health *health = &dev->priv.health;
304 flush_work(&health->work);
307 int mlx5_health_init(struct mlx5_core_dev *dev)
309 struct mlx5_core_health *health;
312 health = &dev->priv.health;
313 name = kmalloc(64, GFP_KERNEL);
317 strcpy(name, "mlx5_health");
318 strcat(name, dev_name(&dev->pdev->dev));
321 INIT_WORK(&health->work, health_care);