// SPDX-License-Identifier: GPL-2.0/* * Copyright (c) 2012-2022, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ #include <linux/export.h>#include <linux/sched.h>#include <linux/wait.h>#include <linux/delay.h> #include <linux/mei.h> #include "mei_dev.h"#include "hbm.h"#include "client.h" const char *mei_dev_state_str(int state){#define MEI_DEV_STATE(state) case MEI_DEV_##state: return #state switch (state) { MEI_DEV_STATE(INITIALIZING); MEI_DEV_STATE(INIT_CLIENTS); MEI_DEV_STATE(ENABLED); MEI_DEV_STATE(RESETTING); MEI_DEV_STATE(DISABLED); MEI_DEV_STATE(POWERING_DOWN); MEI_DEV_STATE(POWER_DOWN); MEI_DEV_STATE(POWER_UP); default: return "unknown"; }#undef MEI_DEV_STATE} const char *mei_pg_state_str(enum mei_pg_state state){#define MEI_PG_STATE(state) case MEI_PG_##state: return #state switch (state) { MEI_PG_STATE(OFF); MEI_PG_STATE(ON); default: return "unknown"; }#undef MEI_PG_STATE} /** * mei_fw_status2str - convert fw status registers to printable string * * @fw_status: firmware status * @buf: string buffer at minimal size MEI_FW_STATUS_STR_SZ * @len: buffer len must be >= MEI_FW_STATUS_STR_SZ * * Return: number of bytes written or -EINVAL if buffer is to small */ssize_t mei_fw_status2str(struct mei_fw_status *fw_status, char *buf, size_t len){ ssize_t cnt = 0; int i; buf[0] = '\0'; if (len < MEI_FW_STATUS_STR_SZ) return -EINVAL; for (i = 0; i < fw_status->count; i++) cnt += scnprintf(buf + cnt, len - cnt, "%08X ", fw_status->status[i]); /* drop last space */ buf[cnt] = '\0'; return cnt;}EXPORT_SYMBOL_GPL(mei_fw_status2str); /** * mei_cancel_work - Cancel mei background jobs * * @dev: the device structure */void mei_cancel_work(struct mei_device *dev){ cancel_work_sync(&dev->reset_work); cancel_work_sync(&dev->bus_rescan_work); cancel_delayed_work_sync(&dev->timer_work);}EXPORT_SYMBOL_GPL(mei_cancel_work); /** * mei_reset - resets host and fw. * * @dev: the device structure * * Return: 0 on success or < 0 if the reset hasn't succeeded */int mei_reset(struct mei_device *dev){ enum mei_dev_state state = dev->dev_state; bool interrupts_enabled; int ret; if (state != MEI_DEV_INITIALIZING && state != MEI_DEV_DISABLED && state != MEI_DEV_POWER_DOWN && state != MEI_DEV_POWER_UP) { char fw_sts_str[MEI_FW_STATUS_STR_SZ]; mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ); if (kind_is_gsc(dev) || kind_is_gscfi(dev)) { dev_dbg(&dev->dev, "unexpected reset: dev_state = %s fw status = %s\n", mei_dev_state_str(state), fw_sts_str); } else { dev_warn(&dev->dev, "unexpected reset: dev_state = %s fw status = %s\n", mei_dev_state_str(state), fw_sts_str); } } mei_clear_interrupts(dev); /* we're already in reset, cancel the init timer * if the reset was called due the hbm protocol error * we need to call it before hw start * so the hbm watchdog won't kick in */ mei_hbm_idle(dev); /* enter reset flow */ interrupts_enabled = state != MEI_DEV_POWER_DOWN; mei_set_devstate(dev, MEI_DEV_RESETTING); dev->reset_count++; if (dev->reset_count > MEI_MAX_CONSEC_RESET) { dev_err(&dev->dev, "reset: reached maximal consecutive resets: disabling the device\n"); mei_set_devstate(dev, MEI_DEV_DISABLED); return -ENODEV; } ret = mei_hw_reset(dev, interrupts_enabled); /* fall through and remove the sw state even if hw reset has failed */ /* no need to clean up software state in case of power up */ if (state != MEI_DEV_INITIALIZING && state != MEI_DEV_POWER_UP) mei_cl_all_disconnect(dev); mei_hbm_reset(dev); /* clean stale FW version */ dev->fw_ver_received = 0; memset(dev->rd_msg_hdr, 0, sizeof(dev->rd_msg_hdr)); if (ret) { dev_err(&dev->dev, "hw_reset failed ret = %d\n", ret); return ret; } if (state == MEI_DEV_POWER_DOWN) { dev_dbg(&dev->dev, "powering down: end of reset\n"); mei_set_devstate(dev, MEI_DEV_DISABLED); return 0; } ret = mei_hw_start(dev); if (ret) { char fw_sts_str[MEI_FW_STATUS_STR_SZ]; mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ); dev_err(&dev->dev, "hw_start failed ret = %d fw status = %s\n", ret, fw_sts_str); return ret; } if (dev->dev_state != MEI_DEV_RESETTING) { dev_dbg(&dev->dev, "wrong state = %d on link start\n", dev->dev_state); return 0; } dev_dbg(&dev->dev, "link is established start sending messages.\n"); mei_set_devstate(dev, MEI_DEV_INIT_CLIENTS); ret = mei_hbm_start_req(dev); if (ret) { dev_err(&dev->dev, "hbm_start failed ret = %d\n", ret); mei_set_devstate(dev, MEI_DEV_RESETTING); return ret; } return 0;}EXPORT_SYMBOL_GPL(mei_reset); /** * mei_start - initializes host and fw to start work. * * @dev: the device structure * * Return: 0 on success, <0 on failure. */int mei_start(struct mei_device *dev){ int ret; mutex_lock(&dev->device_lock); /* acknowledge interrupt and stop interrupts */ mei_clear_interrupts(dev); ret = mei_hw_config(dev); if (ret) goto err; dev_dbg(&dev->dev, "reset in start the mei device.\n"); dev->reset_count = 0; do { mei_set_devstate(dev, MEI_DEV_INITIALIZING); ret = mei_reset(dev); if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) { dev_err(&dev->dev, "reset failed ret = %d", ret); goto err; } } while (ret); if (mei_hbm_start_wait(dev)) { dev_err(&dev->dev, "HBM haven't started"); goto err; } if (!mei_hbm_version_is_supported(dev)) { dev_dbg(&dev->dev, "MEI start failed.\n"); goto err; } dev_dbg(&dev->dev, "link layer has been established.\n"); mutex_unlock(&dev->device_lock); return 0;err: dev_err(&dev->dev, "link layer initialization failed.\n"); mei_set_devstate(dev, MEI_DEV_DISABLED); mutex_unlock(&dev->device_lock); return -ENODEV;}EXPORT_SYMBOL_GPL(mei_start); /** * mei_restart - restart device after suspend * * @dev: the device structure * * Return: 0 on success or -ENODEV if the restart hasn't succeeded */int mei_restart(struct mei_device *dev){ int err; mutex_lock(&dev->device_lock); mei_set_devstate(dev, MEI_DEV_POWER_UP); dev->reset_count = 0; err = mei_reset(dev); mutex_unlock(&dev->device_lock); if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) { dev_err(&dev->dev, "device disabled = %d\n", err); return -ENODEV; } /* try to start again */ if (err) schedule_work(&dev->reset_work); return 0;}EXPORT_SYMBOL_GPL(mei_restart); static void mei_reset_work(struct work_struct *work){ struct mei_device *dev = container_of(work, struct mei_device, reset_work); int ret; mei_clear_interrupts(dev); mei_synchronize_irq(dev); mutex_lock(&dev->device_lock); ret = mei_reset(dev); mutex_unlock(&dev->device_lock); if (dev->dev_state == MEI_DEV_DISABLED) { dev_err(&dev->dev, "device disabled = %d\n", ret); return; } /* retry reset in case of failure */ if (ret) schedule_work(&dev->reset_work);} void mei_stop(struct mei_device *dev){ dev_dbg(&dev->dev, "stopping the device.\n"); mutex_lock(&dev->device_lock); mei_set_devstate(dev, MEI_DEV_POWERING_DOWN); mutex_unlock(&dev->device_lock); mei_cl_bus_remove_devices(dev); mutex_lock(&dev->device_lock); mei_set_devstate(dev, MEI_DEV_POWER_DOWN); mutex_unlock(&dev->device_lock); mei_cancel_work(dev); mei_clear_interrupts(dev); mei_synchronize_irq(dev); /* to catch HW-initiated reset */ mei_cancel_work(dev); mutex_lock(&dev->device_lock); mei_reset(dev); /* move device to disabled state unconditionally */ mei_set_devstate(dev, MEI_DEV_DISABLED); mutex_unlock(&dev->device_lock);}EXPORT_SYMBOL_GPL(mei_stop); /** * mei_write_is_idle - check if the write queues are idle * * @dev: the device structure * * Return: true of there is no pending write */bool mei_write_is_idle(struct mei_device *dev){ bool idle = (dev->dev_state == MEI_DEV_ENABLED && !dev->pg_blocked && list_empty(&dev->ctrl_wr_list) && list_empty(&dev->write_list) && list_empty(&dev->write_waiting_list)); dev_dbg(&dev->dev, "write pg: is idle[%d] state=%s blocked=%d ctrl=%d write=%d wwait=%d\n", idle, mei_dev_state_str(dev->dev_state), dev->pg_blocked, list_empty(&dev->ctrl_wr_list), list_empty(&dev->write_list), list_empty(&dev->write_waiting_list)); return idle;}EXPORT_SYMBOL_GPL(mei_write_is_idle); /** * mei_device_init - initialize mei_device structure * * @dev: the mei device * @parent: the parent device * @slow_fw: configure longer timeouts as FW is slow * @hw_ops: hw operations */void mei_device_init(struct mei_device *dev, struct device *parent, bool slow_fw, const struct mei_hw_ops *hw_ops){ /* setup our list array */ INIT_LIST_HEAD(&dev->file_list); INIT_LIST_HEAD(&dev->device_list); INIT_LIST_HEAD(&dev->me_clients); mutex_init(&dev->device_lock); init_rwsem(&dev->me_clients_rwsem); mutex_init(&dev->cl_bus_lock); init_waitqueue_head(&dev->wait_hw_ready); init_waitqueue_head(&dev->wait_pg); init_waitqueue_head(&dev->wait_hbm_start); dev->dev_state = MEI_DEV_UNINITIALIZED; init_waitqueue_head(&dev->wait_dev_state); dev->reset_count = 0; INIT_LIST_HEAD(&dev->write_list); INIT_LIST_HEAD(&dev->write_waiting_list); INIT_LIST_HEAD(&dev->ctrl_wr_list); INIT_LIST_HEAD(&dev->ctrl_rd_list); dev->tx_queue_limit = MEI_TX_QUEUE_LIMIT_DEFAULT; INIT_DELAYED_WORK(&dev->timer_work, mei_timer); INIT_WORK(&dev->reset_work, mei_reset_work); INIT_WORK(&dev->bus_rescan_work, mei_cl_bus_rescan_work); bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX); dev->open_handle_count = 0; dev->pxp_mode = MEI_DEV_PXP_DEFAULT; dev->gsc_reset_to_pxp = MEI_DEV_RESET_TO_PXP_DEFAULT; /* * Reserving the first client ID * 0: Reserved for MEI Bus Message communications */ bitmap_set(dev->host_clients_map, 0, 1); dev->pg_event = MEI_PG_EVENT_IDLE; dev->ops = hw_ops; dev->parent = parent; dev->timeouts.hw_ready = mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT); dev->timeouts.connect = MEI_CONNECT_TIMEOUT; dev->timeouts.client_init = MEI_CLIENTS_INIT_TIMEOUT; dev->timeouts.pgi = mei_secs_to_jiffies(MEI_PGI_TIMEOUT); dev->timeouts.d0i3 = mei_secs_to_jiffies(MEI_D0I3_TIMEOUT); if (slow_fw) { dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT_SLOW); dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT_SLOW); dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT_SLOW); } else { dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT); dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT); dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT); } dev->timeouts.link_reset_wait = msecs_to_jiffies(MEI_LINK_RESET_WAIT_TIMEOUT_MSEC);}EXPORT_SYMBOL_GPL(mei_device_init);
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2012-2022, Intel Corporation. All rights reserved.
* Intel Management Engine Interface (Intel MEI) Linux driver
*/
#include <linux/export.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/delay.h>
#include <linux/mei.h>
#include "mei_dev.h"
#include "hbm.h"
#include "client.h"
const char *mei_dev_state_str(int state)
{
#define MEI_DEV_STATE(state) case MEI_DEV_##state: return #state
switch (state) {
MEI_DEV_STATE(INITIALIZING);
MEI_DEV_STATE(INIT_CLIENTS);
MEI_DEV_STATE(ENABLED);
MEI_DEV_STATE(RESETTING);
MEI_DEV_STATE(DISABLED);
MEI_DEV_STATE(POWERING_DOWN);
MEI_DEV_STATE(POWER_DOWN);
MEI_DEV_STATE(POWER_UP);
default:
return "unknown";
}
#undef MEI_DEV_STATE
}
const char *mei_pg_state_str(enum mei_pg_state state)
{
#define MEI_PG_STATE(state) case MEI_PG_##state: return #state
switch (state) {
MEI_PG_STATE(OFF);
MEI_PG_STATE(ON);
default:
return "unknown";
}
#undef MEI_PG_STATE
}
/**
* mei_fw_status2str - convert fw status registers to printable string
*
* @fw_status: firmware status
* @buf: string buffer at minimal size MEI_FW_STATUS_STR_SZ
* @len: buffer len must be >= MEI_FW_STATUS_STR_SZ
*
* Return: number of bytes written or -EINVAL if buffer is to small
*/
ssize_t mei_fw_status2str(struct mei_fw_status *fw_status,
char *buf, size_t len)
{
ssize_t cnt = 0;
int i;
buf[0] = '\0';
if (len < MEI_FW_STATUS_STR_SZ)
return -EINVAL;
for (i = 0; i < fw_status->count; i++)
cnt += scnprintf(buf + cnt, len - cnt, "%08X ",
fw_status->status[i]);
/* drop last space */
buf[cnt] = '\0';
return cnt;
}
EXPORT_SYMBOL_GPL(mei_fw_status2str);
/**
* mei_cancel_work - Cancel mei background jobs
*
* @dev: the device structure
*/
void mei_cancel_work(struct mei_device *dev)
{
cancel_work_sync(&dev->reset_work);
cancel_work_sync(&dev->bus_rescan_work);
cancel_delayed_work_sync(&dev->timer_work);
}
EXPORT_SYMBOL_GPL(mei_cancel_work);
/**
* mei_reset - resets host and fw.
*
* @dev: the device structure
*
* Return: 0 on success or < 0 if the reset hasn't succeeded
*/
int mei_reset(struct mei_device *dev)
{
enum mei_dev_state state = dev->dev_state;
bool interrupts_enabled;
int ret;
if (state != MEI_DEV_INITIALIZING &&
state != MEI_DEV_DISABLED &&
state != MEI_DEV_POWER_DOWN &&
state != MEI_DEV_POWER_UP) {
char fw_sts_str[MEI_FW_STATUS_STR_SZ];
mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ);
if (kind_is_gsc(dev) || kind_is_gscfi(dev)) {
dev_dbg(&dev->dev, "unexpected reset: dev_state = %s fw status = %s\n",
mei_dev_state_str(state), fw_sts_str);
} else {
dev_warn(&dev->dev, "unexpected reset: dev_state = %s fw status = %s\n",
mei_dev_state_str(state), fw_sts_str);
}
}
mei_clear_interrupts(dev);
/* we're already in reset, cancel the init timer
* if the reset was called due the hbm protocol error
* we need to call it before hw start
* so the hbm watchdog won't kick in
*/
mei_hbm_idle(dev);
/* enter reset flow */
interrupts_enabled = state != MEI_DEV_POWER_DOWN;
mei_set_devstate(dev, MEI_DEV_RESETTING);
dev->reset_count++;
if (dev->reset_count > MEI_MAX_CONSEC_RESET) {
dev_err(&dev->dev, "reset: reached maximal consecutive resets: disabling the device\n");
mei_set_devstate(dev, MEI_DEV_DISABLED);
return -ENODEV;
}
ret = mei_hw_reset(dev, interrupts_enabled);
/* fall through and remove the sw state even if hw reset has failed */
/* no need to clean up software state in case of power up */
if (state != MEI_DEV_INITIALIZING && state != MEI_DEV_POWER_UP)
mei_cl_all_disconnect(dev);
mei_hbm_reset(dev);
/* clean stale FW version */
dev->fw_ver_received = 0;
memset(dev->rd_msg_hdr, 0, sizeof(dev->rd_msg_hdr));
if (ret) {
dev_err(&dev->dev, "hw_reset failed ret = %d\n", ret);
return ret;
}
if (state == MEI_DEV_POWER_DOWN) {
dev_dbg(&dev->dev, "powering down: end of reset\n");
mei_set_devstate(dev, MEI_DEV_DISABLED);
return 0;
}
ret = mei_hw_start(dev);
if (ret) {
char fw_sts_str[MEI_FW_STATUS_STR_SZ];
mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ);
dev_err(&dev->dev, "hw_start failed ret = %d fw status = %s\n", ret, fw_sts_str);
return ret;
}
if (dev->dev_state != MEI_DEV_RESETTING) {
dev_dbg(&dev->dev, "wrong state = %d on link start\n", dev->dev_state);
return 0;
}
dev_dbg(&dev->dev, "link is established start sending messages.\n");
mei_set_devstate(dev, MEI_DEV_INIT_CLIENTS);
ret = mei_hbm_start_req(dev);
if (ret) {
dev_err(&dev->dev, "hbm_start failed ret = %d\n", ret);
mei_set_devstate(dev, MEI_DEV_RESETTING);
return ret;
}
return 0;
}
EXPORT_SYMBOL_GPL(mei_reset);
/**
* mei_start - initializes host and fw to start work.
*
* @dev: the device structure
*
* Return: 0 on success, <0 on failure.
*/
int mei_start(struct mei_device *dev)
{
int ret;
mutex_lock(&dev->device_lock);
/* acknowledge interrupt and stop interrupts */
mei_clear_interrupts(dev);
ret = mei_hw_config(dev);
if (ret)
goto err;
dev_dbg(&dev->dev, "reset in start the mei device.\n");
dev->reset_count = 0;
do {
mei_set_devstate(dev, MEI_DEV_INITIALIZING);
ret = mei_reset(dev);
if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
dev_err(&dev->dev, "reset failed ret = %d", ret);
goto err;
}
} while (ret);
if (mei_hbm_start_wait(dev)) {
dev_err(&dev->dev, "HBM haven't started");
goto err;
}
if (!mei_hbm_version_is_supported(dev)) {
dev_dbg(&dev->dev, "MEI start failed.\n");
goto err;
}
dev_dbg(&dev->dev, "link layer has been established.\n");
mutex_unlock(&dev->device_lock);
return 0;
err:
dev_err(&dev->dev, "link layer initialization failed.\n");
mei_set_devstate(dev, MEI_DEV_DISABLED);
mutex_unlock(&dev->device_lock);
return -ENODEV;
}
EXPORT_SYMBOL_GPL(mei_start);
/**
* mei_restart - restart device after suspend
*
* @dev: the device structure
*
* Return: 0 on success or -ENODEV if the restart hasn't succeeded
*/
int mei_restart(struct mei_device *dev)
{
int err;
mutex_lock(&dev->device_lock);
mei_set_devstate(dev, MEI_DEV_POWER_UP);
dev->reset_count = 0;
err = mei_reset(dev);
mutex_unlock(&dev->device_lock);
if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
dev_err(&dev->dev, "device disabled = %d\n", err);
return -ENODEV;
}
/* try to start again */
if (err)
schedule_work(&dev->reset_work);
return 0;
}
EXPORT_SYMBOL_GPL(mei_restart);
static void mei_reset_work(struct work_struct *work)
{
struct mei_device *dev =
container_of(work, struct mei_device, reset_work);
int ret;
mei_clear_interrupts(dev);
mei_synchronize_irq(dev);
mutex_lock(&dev->device_lock);
ret = mei_reset(dev);
mutex_unlock(&dev->device_lock);
if (dev->dev_state == MEI_DEV_DISABLED) {
dev_err(&dev->dev, "device disabled = %d\n", ret);
return;
}
/* retry reset in case of failure */
if (ret)
schedule_work(&dev->reset_work);
}
void mei_stop(struct mei_device *dev)
{
dev_dbg(&dev->dev, "stopping the device.\n");
mutex_lock(&dev->device_lock);
mei_set_devstate(dev, MEI_DEV_POWERING_DOWN);
mutex_unlock(&dev->device_lock);
mei_cl_bus_remove_devices(dev);
mutex_lock(&dev->device_lock);
mei_set_devstate(dev, MEI_DEV_POWER_DOWN);
mutex_unlock(&dev->device_lock);
mei_cancel_work(dev);
mei_clear_interrupts(dev);
mei_synchronize_irq(dev);
/* to catch HW-initiated reset */
mei_cancel_work(dev);
mutex_lock(&dev->device_lock);
mei_reset(dev);
/* move device to disabled state unconditionally */
mei_set_devstate(dev, MEI_DEV_DISABLED);
mutex_unlock(&dev->device_lock);
}
EXPORT_SYMBOL_GPL(mei_stop);
/**
* mei_write_is_idle - check if the write queues are idle
*
* @dev: the device structure
*
* Return: true of there is no pending write
*/
bool mei_write_is_idle(struct mei_device *dev)
{
bool idle = (dev->dev_state == MEI_DEV_ENABLED &&
!dev->pg_blocked &&
list_empty(&dev->ctrl_wr_list) &&
list_empty(&dev->write_list) &&
list_empty(&dev->write_waiting_list));
dev_dbg(&dev->dev, "write pg: is idle[%d] state=%s blocked=%d ctrl=%d write=%d wwait=%d\n",
idle,
mei_dev_state_str(dev->dev_state),
dev->pg_blocked,
list_empty(&dev->ctrl_wr_list),
list_empty(&dev->write_list),
list_empty(&dev->write_waiting_list));
return idle;
}
EXPORT_SYMBOL_GPL(mei_write_is_idle);
/**
* mei_device_init - initialize mei_device structure
*
* @dev: the mei device
* @parent: the parent device
* @slow_fw: configure longer timeouts as FW is slow
* @hw_ops: hw operations
*/
void mei_device_init(struct mei_device *dev,
struct device *parent,
bool slow_fw,
const struct mei_hw_ops *hw_ops)
{
/* setup our list array */
INIT_LIST_HEAD(&dev->file_list);
INIT_LIST_HEAD(&dev->device_list);
INIT_LIST_HEAD(&dev->me_clients);
mutex_init(&dev->device_lock);
init_rwsem(&dev->me_clients_rwsem);
mutex_init(&dev->cl_bus_lock);
init_waitqueue_head(&dev->wait_hw_ready);
init_waitqueue_head(&dev->wait_pg);
init_waitqueue_head(&dev->wait_hbm_start);
dev->dev_state = MEI_DEV_UNINITIALIZED;
init_waitqueue_head(&dev->wait_dev_state);
dev->reset_count = 0;
INIT_LIST_HEAD(&dev->write_list);
INIT_LIST_HEAD(&dev->write_waiting_list);
INIT_LIST_HEAD(&dev->ctrl_wr_list);
INIT_LIST_HEAD(&dev->ctrl_rd_list);
dev->tx_queue_limit = MEI_TX_QUEUE_LIMIT_DEFAULT;
INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
INIT_WORK(&dev->reset_work, mei_reset_work);
INIT_WORK(&dev->bus_rescan_work, mei_cl_bus_rescan_work);
bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
dev->open_handle_count = 0;
dev->pxp_mode = MEI_DEV_PXP_DEFAULT;
dev->gsc_reset_to_pxp = MEI_DEV_RESET_TO_PXP_DEFAULT;
/*
* Reserving the first client ID
* 0: Reserved for MEI Bus Message communications
*/
bitmap_set(dev->host_clients_map, 0, 1);
dev->pg_event = MEI_PG_EVENT_IDLE;
dev->ops = hw_ops;
dev->parent = parent;
dev->timeouts.hw_ready = mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT);
dev->timeouts.connect = MEI_CONNECT_TIMEOUT;
dev->timeouts.client_init = MEI_CLIENTS_INIT_TIMEOUT;
dev->timeouts.pgi = mei_secs_to_jiffies(MEI_PGI_TIMEOUT);
dev->timeouts.d0i3 = mei_secs_to_jiffies(MEI_D0I3_TIMEOUT);
if (slow_fw) {
dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT_SLOW);
dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT_SLOW);
dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT_SLOW);
} else {
dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT);
dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT);
dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT);
}
dev->timeouts.link_reset_wait = msecs_to_jiffies(MEI_LINK_RESET_WAIT_TIMEOUT_MSEC);
}
EXPORT_SYMBOL_GPL(mei_device_init);