blob: 3edafc8d3ad49aac9aac9ae884c2a20856ff691f [file] [log] [blame]
Oren Weil91f01c62011-05-15 13:43:44 +03001/*
2 *
3 * Intel Management Engine Interface (Intel MEI) Linux driver
Tomas Winkler733ba912012-02-09 19:25:53 +02004 * Copyright (c) 2003-2012, Intel Corporation.
Oren Weil91f01c62011-05-15 13:43:44 +03005 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 */
16
Tomas Winkler40e0b672013-03-27 16:58:30 +020017#include <linux/export.h>
Oren Weil91f01c62011-05-15 13:43:44 +030018#include <linux/sched.h>
19#include <linux/wait.h>
20#include <linux/delay.h>
21
Tomas Winkler4f3afe12012-05-09 16:38:59 +030022#include <linux/mei.h>
Oren Weil91f01c62011-05-15 13:43:44 +030023
Tomas Winkler47a73802012-12-25 19:06:03 +020024#include "mei_dev.h"
Tomas Winkleraafae7e2013-03-11 18:27:03 +020025#include "hbm.h"
Tomas Winkler90e0b5f2013-01-08 23:07:14 +020026#include "client.h"
Tomas Winkler47a73802012-12-25 19:06:03 +020027
Tomas Winklerb210d752012-08-07 00:03:56 +030028const char *mei_dev_state_str(int state)
29{
30#define MEI_DEV_STATE(state) case MEI_DEV_##state: return #state
31 switch (state) {
32 MEI_DEV_STATE(INITIALIZING);
33 MEI_DEV_STATE(INIT_CLIENTS);
34 MEI_DEV_STATE(ENABLED);
Bill Nottingham0cfee512013-04-19 22:01:36 +030035 MEI_DEV_STATE(RESETTING);
Tomas Winklerb210d752012-08-07 00:03:56 +030036 MEI_DEV_STATE(DISABLED);
Tomas Winklerb210d752012-08-07 00:03:56 +030037 MEI_DEV_STATE(POWER_DOWN);
38 MEI_DEV_STATE(POWER_UP);
39 default:
Masanari Iida8b513d02013-05-21 23:13:12 +090040 return "unknown";
Tomas Winklerb210d752012-08-07 00:03:56 +030041 }
42#undef MEI_DEV_STATE
43}
44
Alexander Usyskin1beeb4b2014-09-29 16:31:33 +030045const char *mei_pg_state_str(enum mei_pg_state state)
46{
47#define MEI_PG_STATE(state) case MEI_PG_##state: return #state
48 switch (state) {
49 MEI_PG_STATE(OFF);
50 MEI_PG_STATE(ON);
51 default:
52 return "unknown";
53 }
54#undef MEI_PG_STATE
55}
56
Alexander Usyskinedca5ea2014-11-19 17:01:38 +020057/**
58 * mei_fw_status2str - convert fw status registers to printable string
59 *
60 * @fw_status: firmware status
61 * @buf: string buffer at minimal size MEI_FW_STATUS_STR_SZ
62 * @len: buffer len must be >= MEI_FW_STATUS_STR_SZ
63 *
64 * Return: number of bytes written or -EINVAL if buffer is to small
65 */
66ssize_t mei_fw_status2str(struct mei_fw_status *fw_status,
67 char *buf, size_t len)
68{
69 ssize_t cnt = 0;
70 int i;
71
72 buf[0] = '\0';
73
74 if (len < MEI_FW_STATUS_STR_SZ)
75 return -EINVAL;
76
77 for (i = 0; i < fw_status->count; i++)
78 cnt += scnprintf(buf + cnt, len - cnt, "%08X ",
79 fw_status->status[i]);
80
81 /* drop last space */
82 buf[cnt] = '\0';
83 return cnt;
84}
85EXPORT_SYMBOL_GPL(mei_fw_status2str);
Tomas Winkler33ec0822014-01-12 00:36:09 +020086
87/**
Alexander Usyskina8605ea2014-09-29 16:31:49 +030088 * mei_cancel_work - Cancel mei background jobs
Tomas Winkler33ec0822014-01-12 00:36:09 +020089 *
90 * @dev: the device structure
Tomas Winkler33ec0822014-01-12 00:36:09 +020091 */
92void mei_cancel_work(struct mei_device *dev)
93{
94 cancel_work_sync(&dev->init_work);
95 cancel_work_sync(&dev->reset_work);
96
97 cancel_delayed_work(&dev->timer_work);
98}
99EXPORT_SYMBOL_GPL(mei_cancel_work);
100
101/**
102 * mei_reset - resets host and fw.
103 *
104 * @dev: the device structure
Alexander Usyskince231392014-09-29 16:31:50 +0300105 *
106 * Return: 0 on success or < 0 if the reset hasn't succeeded
Tomas Winkler33ec0822014-01-12 00:36:09 +0200107 */
108int mei_reset(struct mei_device *dev)
109{
110 enum mei_dev_state state = dev->dev_state;
111 bool interrupts_enabled;
112 int ret;
113
114 if (state != MEI_DEV_INITIALIZING &&
115 state != MEI_DEV_DISABLED &&
116 state != MEI_DEV_POWER_DOWN &&
Alexander Usyskin04dd3662014-03-31 17:59:23 +0300117 state != MEI_DEV_POWER_UP) {
Alexander Usyskinedca5ea2014-11-19 17:01:38 +0200118 char fw_sts_str[MEI_FW_STATUS_STR_SZ];
Tomas Winkler92db1552014-09-29 16:31:37 +0300119
Alexander Usyskinedca5ea2014-11-19 17:01:38 +0200120 mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ);
121 dev_warn(dev->dev, "unexpected reset: dev_state = %s fw status = %s\n",
122 mei_dev_state_str(state), fw_sts_str);
Alexander Usyskin04dd3662014-03-31 17:59:23 +0300123 }
Tomas Winkler33ec0822014-01-12 00:36:09 +0200124
125 /* we're already in reset, cancel the init timer
126 * if the reset was called due the hbm protocol error
127 * we need to call it before hw start
128 * so the hbm watchdog won't kick in
129 */
130 mei_hbm_idle(dev);
131
132 /* enter reset flow */
133 interrupts_enabled = state != MEI_DEV_POWER_DOWN;
134 dev->dev_state = MEI_DEV_RESETTING;
135
Tomas Winkler6adb8ef2014-01-12 00:36:10 +0200136 dev->reset_count++;
137 if (dev->reset_count > MEI_MAX_CONSEC_RESET) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300138 dev_err(dev->dev, "reset: reached maximal consecutive resets: disabling the device\n");
Tomas Winkler6adb8ef2014-01-12 00:36:10 +0200139 dev->dev_state = MEI_DEV_DISABLED;
140 return -ENODEV;
141 }
142
Tomas Winkler33ec0822014-01-12 00:36:09 +0200143 ret = mei_hw_reset(dev, interrupts_enabled);
144 /* fall through and remove the sw state even if hw reset has failed */
145
146 /* no need to clean up software state in case of power up */
147 if (state != MEI_DEV_INITIALIZING &&
148 state != MEI_DEV_POWER_UP) {
149
150 /* remove all waiting requests */
151 mei_cl_all_write_clear(dev);
152
153 mei_cl_all_disconnect(dev);
154
155 /* wake up all readers and writers so they can be interrupted */
156 mei_cl_all_wakeup(dev);
157
158 /* remove entry if already in list */
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300159 dev_dbg(dev->dev, "remove iamthif and wd from the file list.\n");
Tomas Winkler33ec0822014-01-12 00:36:09 +0200160 mei_cl_unlink(&dev->wd_cl);
161 mei_cl_unlink(&dev->iamthif_cl);
162 mei_amthif_reset_params(dev);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200163 }
164
Tomas Winkler84b32942014-05-07 16:51:28 +0300165 mei_hbm_reset(dev);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200166
Tomas Winkler33ec0822014-01-12 00:36:09 +0200167 dev->rd_msg_hdr = 0;
168 dev->wd_pending = false;
169
170 if (ret) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300171 dev_err(dev->dev, "hw_reset failed ret = %d\n", ret);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200172 return ret;
173 }
174
175 if (state == MEI_DEV_POWER_DOWN) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300176 dev_dbg(dev->dev, "powering down: end of reset\n");
Tomas Winkler33ec0822014-01-12 00:36:09 +0200177 dev->dev_state = MEI_DEV_DISABLED;
178 return 0;
179 }
180
181 ret = mei_hw_start(dev);
182 if (ret) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300183 dev_err(dev->dev, "hw_start failed ret = %d\n", ret);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200184 return ret;
185 }
186
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300187 dev_dbg(dev->dev, "link is established start sending messages.\n");
Tomas Winkler33ec0822014-01-12 00:36:09 +0200188
189 dev->dev_state = MEI_DEV_INIT_CLIENTS;
190 ret = mei_hbm_start_req(dev);
191 if (ret) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300192 dev_err(dev->dev, "hbm_start failed ret = %d\n", ret);
Tomas Winkler7d93e582014-01-14 23:10:10 +0200193 dev->dev_state = MEI_DEV_RESETTING;
Tomas Winkler33ec0822014-01-12 00:36:09 +0200194 return ret;
195 }
196
197 return 0;
198}
199EXPORT_SYMBOL_GPL(mei_reset);
200
Oren Weil91f01c62011-05-15 13:43:44 +0300201/**
Tomas Winklerc4d589b2013-03-27 16:58:28 +0200202 * mei_start - initializes host and fw to start work.
Oren Weil91f01c62011-05-15 13:43:44 +0300203 *
204 * @dev: the device structure
205 *
Alexander Usyskina8605ea2014-09-29 16:31:49 +0300206 * Return: 0 on success, <0 on failure.
Oren Weil91f01c62011-05-15 13:43:44 +0300207 */
Tomas Winklerc4d589b2013-03-27 16:58:28 +0200208int mei_start(struct mei_device *dev)
Oren Weil91f01c62011-05-15 13:43:44 +0300209{
Tomas Winkler7d93e582014-01-14 23:10:10 +0200210 int ret;
Tomas Winkler92db1552014-09-29 16:31:37 +0300211
Oren Weil91f01c62011-05-15 13:43:44 +0300212 mutex_lock(&dev->device_lock);
213
Tomas Winkler33ec0822014-01-12 00:36:09 +0200214 /* acknowledge interrupt and stop interrupts */
Tomas Winkler3a65dd42012-12-25 19:06:06 +0200215 mei_clear_interrupts(dev);
Oren Weil91f01c62011-05-15 13:43:44 +0300216
Tomas Winklere7e0c232013-01-08 23:07:31 +0200217 mei_hw_config(dev);
Tomas Winkler24aadc82012-06-25 23:46:27 +0300218
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300219 dev_dbg(dev->dev, "reset in start the mei device.\n");
Oren Weil91f01c62011-05-15 13:43:44 +0300220
Tomas Winkler6adb8ef2014-01-12 00:36:10 +0200221 dev->reset_count = 0;
Tomas Winkler7d93e582014-01-14 23:10:10 +0200222 do {
223 dev->dev_state = MEI_DEV_INITIALIZING;
224 ret = mei_reset(dev);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200225
Tomas Winkler7d93e582014-01-14 23:10:10 +0200226 if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300227 dev_err(dev->dev, "reset failed ret = %d", ret);
Tomas Winkler7d93e582014-01-14 23:10:10 +0200228 goto err;
229 }
230 } while (ret);
231
232 /* we cannot start the device w/o hbm start message completed */
Tomas Winkler33ec0822014-01-12 00:36:09 +0200233 if (dev->dev_state == MEI_DEV_DISABLED) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300234 dev_err(dev->dev, "reset failed");
Tomas Winkler33ec0822014-01-12 00:36:09 +0200235 goto err;
236 }
Oren Weil91f01c62011-05-15 13:43:44 +0300237
Tomas Winkler9b0d5ef2013-04-18 23:03:48 +0300238 if (mei_hbm_start_wait(dev)) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300239 dev_err(dev->dev, "HBM haven't started");
Tomas Winklere7e0c232013-01-08 23:07:31 +0200240 goto err;
Oren Weil91f01c62011-05-15 13:43:44 +0300241 }
242
Tomas Winklere7e0c232013-01-08 23:07:31 +0200243 if (!mei_host_is_ready(dev)) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300244 dev_err(dev->dev, "host is not ready.\n");
Tomas Winklere7e0c232013-01-08 23:07:31 +0200245 goto err;
246 }
Oren Weil91f01c62011-05-15 13:43:44 +0300247
Tomas Winkler827eef52013-02-06 14:06:41 +0200248 if (!mei_hw_is_ready(dev)) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300249 dev_err(dev->dev, "ME is not ready.\n");
Tomas Winklere7e0c232013-01-08 23:07:31 +0200250 goto err;
Oren Weil91f01c62011-05-15 13:43:44 +0300251 }
252
Tomas Winkler2c9b48a2013-06-16 09:16:31 +0300253 if (!mei_hbm_version_is_supported(dev)) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300254 dev_dbg(dev->dev, "MEI start failed.\n");
Tomas Winklere7e0c232013-01-08 23:07:31 +0200255 goto err;
Oren Weil91f01c62011-05-15 13:43:44 +0300256 }
257
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300258 dev_dbg(dev->dev, "link layer has been established.\n");
Oren Weil91f01c62011-05-15 13:43:44 +0300259
Oren Weil91f01c62011-05-15 13:43:44 +0300260 mutex_unlock(&dev->device_lock);
Tomas Winklere7e0c232013-01-08 23:07:31 +0200261 return 0;
262err:
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300263 dev_err(dev->dev, "link layer initialization failed.\n");
Tomas Winklere7e0c232013-01-08 23:07:31 +0200264 dev->dev_state = MEI_DEV_DISABLED;
265 mutex_unlock(&dev->device_lock);
266 return -ENODEV;
Oren Weil91f01c62011-05-15 13:43:44 +0300267}
Tomas Winkler40e0b672013-03-27 16:58:30 +0200268EXPORT_SYMBOL_GPL(mei_start);
Oren Weil91f01c62011-05-15 13:43:44 +0300269
Tomas Winkler544f9462014-01-08 20:19:21 +0200270/**
Tomas Winkler33ec0822014-01-12 00:36:09 +0200271 * mei_restart - restart device after suspend
Tomas Winkler544f9462014-01-08 20:19:21 +0200272 *
273 * @dev: the device structure
Oren Weil91f01c62011-05-15 13:43:44 +0300274 *
Alexander Usyskina8605ea2014-09-29 16:31:49 +0300275 * Return: 0 on success or -ENODEV if the restart hasn't succeeded
Oren Weil91f01c62011-05-15 13:43:44 +0300276 */
Tomas Winkler33ec0822014-01-12 00:36:09 +0200277int mei_restart(struct mei_device *dev)
Oren Weil91f01c62011-05-15 13:43:44 +0300278{
Tomas Winkler33ec0822014-01-12 00:36:09 +0200279 int err;
Oren Weil91f01c62011-05-15 13:43:44 +0300280
Tomas Winkler33ec0822014-01-12 00:36:09 +0200281 mutex_lock(&dev->device_lock);
Oren Weil91f01c62011-05-15 13:43:44 +0300282
Tomas Winkler33ec0822014-01-12 00:36:09 +0200283 mei_clear_interrupts(dev);
Alexander Usyskinf931f4f2013-10-21 22:05:43 +0300284
Tomas Winkler33ec0822014-01-12 00:36:09 +0200285 dev->dev_state = MEI_DEV_POWER_UP;
Tomas Winkler6adb8ef2014-01-12 00:36:10 +0200286 dev->reset_count = 0;
Tomas Winkler66ae4602014-01-08 20:19:22 +0200287
Tomas Winkler33ec0822014-01-12 00:36:09 +0200288 err = mei_reset(dev);
Oren Weil91f01c62011-05-15 13:43:44 +0300289
Tomas Winkler33ec0822014-01-12 00:36:09 +0200290 mutex_unlock(&dev->device_lock);
Oren Weil91f01c62011-05-15 13:43:44 +0300291
Tomas Winkler7d93e582014-01-14 23:10:10 +0200292 if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300293 dev_err(dev->dev, "device disabled = %d\n", err);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200294 return -ENODEV;
Tomas Winkler7d93e582014-01-14 23:10:10 +0200295 }
296
297 /* try to start again */
298 if (err)
299 schedule_work(&dev->reset_work);
300
Oren Weil91f01c62011-05-15 13:43:44 +0300301
Tomas Winkler33ec0822014-01-12 00:36:09 +0200302 return 0;
Oren Weil91f01c62011-05-15 13:43:44 +0300303}
Tomas Winkler33ec0822014-01-12 00:36:09 +0200304EXPORT_SYMBOL_GPL(mei_restart);
305
Tomas Winkler544f9462014-01-08 20:19:21 +0200306static void mei_reset_work(struct work_struct *work)
307{
308 struct mei_device *dev =
309 container_of(work, struct mei_device, reset_work);
Tomas Winkler7d93e582014-01-14 23:10:10 +0200310 int ret;
Tomas Winkler544f9462014-01-08 20:19:21 +0200311
312 mutex_lock(&dev->device_lock);
313
Tomas Winkler7d93e582014-01-14 23:10:10 +0200314 ret = mei_reset(dev);
Tomas Winkler544f9462014-01-08 20:19:21 +0200315
316 mutex_unlock(&dev->device_lock);
Tomas Winkler33ec0822014-01-12 00:36:09 +0200317
Tomas Winkler7d93e582014-01-14 23:10:10 +0200318 if (dev->dev_state == MEI_DEV_DISABLED) {
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300319 dev_err(dev->dev, "device disabled = %d\n", ret);
Tomas Winkler7d93e582014-01-14 23:10:10 +0200320 return;
321 }
322
323 /* retry reset in case of failure */
324 if (ret)
325 schedule_work(&dev->reset_work);
Tomas Winkler544f9462014-01-08 20:19:21 +0200326}
327
Tomas Winkler7cb035d2013-03-10 13:56:08 +0200328void mei_stop(struct mei_device *dev)
329{
Tomas Winkler2bf94cab2014-09-29 16:31:42 +0300330 dev_dbg(dev->dev, "stopping the device.\n");
Tomas Winkler7cb035d2013-03-10 13:56:08 +0200331
Tomas Winkler60095952015-07-23 15:08:47 +0300332 mei_cl_bus_remove_devices(dev);
Samuel Ortiz5e85b362013-06-10 10:10:25 +0300333
Tomas Winkler97ccf632015-10-13 15:02:37 +0300334 mei_cancel_work(dev);
335
Tomas Winkler7cb035d2013-03-10 13:56:08 +0200336 mutex_lock(&dev->device_lock);
337
Tomas Winkler7cb035d2013-03-10 13:56:08 +0200338 mei_wd_stop(dev);
339
340 dev->dev_state = MEI_DEV_POWER_DOWN;
Tomas Winkler33ec0822014-01-12 00:36:09 +0200341 mei_reset(dev);
Alexander Usyskin6c15a852015-02-10 10:36:36 +0200342 /* move device to disabled state unconditionally */
343 dev->dev_state = MEI_DEV_DISABLED;
Tomas Winkler7cb035d2013-03-10 13:56:08 +0200344
345 mutex_unlock(&dev->device_lock);
346
Tomas Winkler2e647122013-03-27 16:58:26 +0200347 mei_watchdog_unregister(dev);
Tomas Winkler7cb035d2013-03-10 13:56:08 +0200348}
Tomas Winkler40e0b672013-03-27 16:58:30 +0200349EXPORT_SYMBOL_GPL(mei_stop);
Oren Weil91f01c62011-05-15 13:43:44 +0300350
Tomas Winklera532bbe2014-03-18 22:52:01 +0200351/**
352 * mei_write_is_idle - check if the write queues are idle
353 *
354 * @dev: the device structure
355 *
Alexander Usyskina8605ea2014-09-29 16:31:49 +0300356 * Return: true of there is no pending write
Tomas Winklera532bbe2014-03-18 22:52:01 +0200357 */
358bool mei_write_is_idle(struct mei_device *dev)
359{
360 bool idle = (dev->dev_state == MEI_DEV_ENABLED &&
361 list_empty(&dev->ctrl_wr_list.list) &&
Tomas Winkler41c95b02015-05-07 15:54:00 +0300362 list_empty(&dev->write_list.list) &&
363 list_empty(&dev->write_waiting_list.list));
Samuel Ortizc1174c02012-11-18 15:13:20 +0200364
Tomas Winkler41c95b02015-05-07 15:54:00 +0300365 dev_dbg(dev->dev, "write pg: is idle[%d] state=%s ctrl=%01d write=%01d wwait=%01d\n",
Tomas Winklera532bbe2014-03-18 22:52:01 +0200366 idle,
367 mei_dev_state_str(dev->dev_state),
368 list_empty(&dev->ctrl_wr_list.list),
Tomas Winkler41c95b02015-05-07 15:54:00 +0300369 list_empty(&dev->write_list.list),
370 list_empty(&dev->write_waiting_list.list));
Tomas Winklera532bbe2014-03-18 22:52:01 +0200371
372 return idle;
373}
374EXPORT_SYMBOL_GPL(mei_write_is_idle);
Oren Weil91f01c62011-05-15 13:43:44 +0300375
Tomas Winkler3a7e9b62014-09-29 16:31:41 +0300376/**
377 * mei_device_init -- initialize mei_device structure
378 *
379 * @dev: the mei device
380 * @device: the device structure
381 * @hw_ops: hw operations
382 */
383void mei_device_init(struct mei_device *dev,
384 struct device *device,
385 const struct mei_hw_ops *hw_ops)
Tomas Winkler544f9462014-01-08 20:19:21 +0200386{
387 /* setup our list array */
388 INIT_LIST_HEAD(&dev->file_list);
389 INIT_LIST_HEAD(&dev->device_list);
Tomas Winkler5ca2d382014-08-21 14:29:13 +0300390 INIT_LIST_HEAD(&dev->me_clients);
Tomas Winkler544f9462014-01-08 20:19:21 +0200391 mutex_init(&dev->device_lock);
Tomas Winklerb7d88512015-02-10 10:39:31 +0200392 init_rwsem(&dev->me_clients_rwsem);
Tomas Winkler0ff0a8d2015-07-23 15:08:42 +0300393 mutex_init(&dev->cl_bus_lock);
Tomas Winkler544f9462014-01-08 20:19:21 +0200394 init_waitqueue_head(&dev->wait_hw_ready);
Tomas Winkler4fcbc992014-03-18 22:51:55 +0200395 init_waitqueue_head(&dev->wait_pg);
Alexander Usyskincb02efc2014-08-21 14:29:19 +0300396 init_waitqueue_head(&dev->wait_hbm_start);
Tomas Winkler544f9462014-01-08 20:19:21 +0200397 init_waitqueue_head(&dev->wait_stop_wd);
398 dev->dev_state = MEI_DEV_INITIALIZING;
Tomas Winkler6adb8ef2014-01-12 00:36:10 +0200399 dev->reset_count = 0;
Tomas Winkler544f9462014-01-08 20:19:21 +0200400
Tomas Winkler544f9462014-01-08 20:19:21 +0200401 mei_io_list_init(&dev->write_list);
402 mei_io_list_init(&dev->write_waiting_list);
403 mei_io_list_init(&dev->ctrl_wr_list);
404 mei_io_list_init(&dev->ctrl_rd_list);
405
406 INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
407 INIT_WORK(&dev->init_work, mei_host_client_init);
408 INIT_WORK(&dev->reset_work, mei_reset_work);
409
410 INIT_LIST_HEAD(&dev->wd_cl.link);
411 INIT_LIST_HEAD(&dev->iamthif_cl.link);
412 mei_io_list_init(&dev->amthif_cmd_list);
413 mei_io_list_init(&dev->amthif_rd_complete_list);
414
415 bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
416 dev->open_handle_count = 0;
417
418 /*
419 * Reserving the first client ID
420 * 0: Reserved for MEI Bus Message communications
421 */
422 bitmap_set(dev->host_clients_map, 0, 1);
Tomas Winkler964a2332014-03-18 22:51:59 +0200423
424 dev->pg_event = MEI_PG_EVENT_IDLE;
Tomas Winkler3a7e9b62014-09-29 16:31:41 +0300425 dev->ops = hw_ops;
426 dev->dev = device;
Tomas Winkler544f9462014-01-08 20:19:21 +0200427}
428EXPORT_SYMBOL_GPL(mei_device_init);
429