mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
mei: implement mei_cl_connect function
Implement mei_cl_connect that warps host client parts of the connection and leave the ioctl specifics in the mei_ioctl_connect_client function. Move mei_ioctl_connect_client to main.c where it belongs Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler
Greg Kroah-Hartman
parent
90e0b5f185
commit
9f81abdac3
@ -460,6 +460,71 @@ bool mei_cl_is_other_connecting(struct mei_cl *cl)
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_cl_connect - connect host clinet to the me one
|
||||
*
|
||||
* @cl: host client
|
||||
*
|
||||
* Locking: called under "dev->device_lock" lock
|
||||
*
|
||||
* returns 0 on success, <0 on failure.
|
||||
*/
|
||||
int mei_cl_connect(struct mei_cl *cl, struct file *file)
|
||||
{
|
||||
struct mei_device *dev;
|
||||
struct mei_cl_cb *cb;
|
||||
long timeout = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT);
|
||||
int rets;
|
||||
|
||||
if (WARN_ON(!cl || !cl->dev))
|
||||
return -ENODEV;
|
||||
|
||||
dev = cl->dev;
|
||||
|
||||
cb = mei_io_cb_init(cl, file);
|
||||
if (!cb) {
|
||||
rets = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
cb->fop_type = MEI_FOP_IOCTL;
|
||||
|
||||
if (dev->mei_host_buffer_is_empty &&
|
||||
!mei_cl_is_other_connecting(cl)) {
|
||||
dev->mei_host_buffer_is_empty = false;
|
||||
|
||||
if (mei_hbm_cl_connect_req(dev, cl)) {
|
||||
rets = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
cl->timer_count = MEI_CONNECT_TIMEOUT;
|
||||
list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
|
||||
} else {
|
||||
list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
|
||||
}
|
||||
|
||||
mutex_unlock(&dev->device_lock);
|
||||
rets = wait_event_timeout(dev->wait_recvd_msg,
|
||||
(cl->state == MEI_FILE_CONNECTED ||
|
||||
cl->state == MEI_FILE_DISCONNECTED),
|
||||
timeout * HZ);
|
||||
mutex_lock(&dev->device_lock);
|
||||
|
||||
if (cl->state != MEI_FILE_CONNECTED) {
|
||||
rets = -EFAULT;
|
||||
|
||||
mei_io_list_flush(&dev->ctrl_rd_list, cl);
|
||||
mei_io_list_flush(&dev->ctrl_wr_list, cl);
|
||||
goto out;
|
||||
}
|
||||
|
||||
rets = cl->status;
|
||||
|
||||
out:
|
||||
mei_io_cb_free(cb);
|
||||
return rets;
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_cl_flow_ctrl_creds - checks flow_control credits for cl.
|
||||
*
|
||||
@ -542,160 +607,6 @@ int mei_cl_flow_ctrl_reduce(struct mei_cl *cl)
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* mei_ioctl_connect_client - the connect to fw client IOCTL function
|
||||
*
|
||||
* @dev: the device structure
|
||||
* @data: IOCTL connect data, input and output parameters
|
||||
* @file: private data of the file object
|
||||
*
|
||||
* Locking: called under "dev->device_lock" lock
|
||||
*
|
||||
* returns 0 on success, <0 on failure.
|
||||
*/
|
||||
int mei_ioctl_connect_client(struct file *file,
|
||||
struct mei_connect_client_data *data)
|
||||
{
|
||||
struct mei_device *dev;
|
||||
struct mei_cl_cb *cb;
|
||||
struct mei_client *client;
|
||||
struct mei_cl *cl;
|
||||
long timeout = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT);
|
||||
int i;
|
||||
int err;
|
||||
int rets;
|
||||
|
||||
cl = file->private_data;
|
||||
if (WARN_ON(!cl || !cl->dev))
|
||||
return -ENODEV;
|
||||
|
||||
dev = cl->dev;
|
||||
|
||||
dev_dbg(&dev->pdev->dev, "mei_ioctl_connect_client() Entry\n");
|
||||
|
||||
/* buffered ioctl cb */
|
||||
cb = mei_io_cb_init(cl, file);
|
||||
if (!cb) {
|
||||
rets = -ENOMEM;
|
||||
goto end;
|
||||
}
|
||||
|
||||
cb->fop_type = MEI_FOP_IOCTL;
|
||||
|
||||
if (dev->dev_state != MEI_DEV_ENABLED) {
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
if (cl->state != MEI_FILE_INITIALIZING &&
|
||||
cl->state != MEI_FILE_DISCONNECTED) {
|
||||
rets = -EBUSY;
|
||||
goto end;
|
||||
}
|
||||
|
||||
/* find ME client we're trying to connect to */
|
||||
i = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
|
||||
if (i >= 0 && !dev->me_clients[i].props.fixed_address) {
|
||||
cl->me_client_id = dev->me_clients[i].client_id;
|
||||
cl->state = MEI_FILE_CONNECTING;
|
||||
}
|
||||
|
||||
dev_dbg(&dev->pdev->dev, "Connect to FW Client ID = %d\n",
|
||||
cl->me_client_id);
|
||||
dev_dbg(&dev->pdev->dev, "FW Client - Protocol Version = %d\n",
|
||||
dev->me_clients[i].props.protocol_version);
|
||||
dev_dbg(&dev->pdev->dev, "FW Client - Max Msg Len = %d\n",
|
||||
dev->me_clients[i].props.max_msg_length);
|
||||
|
||||
/* if we're connecting to amthi client then we will use the
|
||||
* existing connection
|
||||
*/
|
||||
if (uuid_le_cmp(data->in_client_uuid, mei_amthi_guid) == 0) {
|
||||
dev_dbg(&dev->pdev->dev, "FW Client is amthi\n");
|
||||
if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) {
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
clear_bit(cl->host_client_id, dev->host_clients_map);
|
||||
mei_cl_unlink(cl);
|
||||
|
||||
kfree(cl);
|
||||
cl = NULL;
|
||||
file->private_data = &dev->iamthif_cl;
|
||||
|
||||
client = &data->out_client_properties;
|
||||
client->max_msg_length =
|
||||
dev->me_clients[i].props.max_msg_length;
|
||||
client->protocol_version =
|
||||
dev->me_clients[i].props.protocol_version;
|
||||
rets = dev->iamthif_cl.status;
|
||||
|
||||
goto end;
|
||||
}
|
||||
|
||||
if (cl->state != MEI_FILE_CONNECTING) {
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
|
||||
|
||||
/* prepare the output buffer */
|
||||
client = &data->out_client_properties;
|
||||
client->max_msg_length = dev->me_clients[i].props.max_msg_length;
|
||||
client->protocol_version = dev->me_clients[i].props.protocol_version;
|
||||
dev_dbg(&dev->pdev->dev, "Can connect?\n");
|
||||
if (dev->mei_host_buffer_is_empty &&
|
||||
!mei_cl_is_other_connecting(cl)) {
|
||||
dev_dbg(&dev->pdev->dev, "Sending Connect Message\n");
|
||||
dev->mei_host_buffer_is_empty = false;
|
||||
if (mei_hbm_cl_connect_req(dev, cl)) {
|
||||
dev_dbg(&dev->pdev->dev, "Sending connect message - failed\n");
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
} else {
|
||||
dev_dbg(&dev->pdev->dev, "Sending connect message - succeeded\n");
|
||||
cl->timer_count = MEI_CONNECT_TIMEOUT;
|
||||
list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
|
||||
}
|
||||
|
||||
|
||||
} else {
|
||||
dev_dbg(&dev->pdev->dev, "Queuing the connect request due to device busy\n");
|
||||
dev_dbg(&dev->pdev->dev, "add connect cb to control write list.\n");
|
||||
list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
|
||||
}
|
||||
mutex_unlock(&dev->device_lock);
|
||||
err = wait_event_timeout(dev->wait_recvd_msg,
|
||||
(MEI_FILE_CONNECTED == cl->state ||
|
||||
MEI_FILE_DISCONNECTED == cl->state), timeout);
|
||||
|
||||
mutex_lock(&dev->device_lock);
|
||||
if (MEI_FILE_CONNECTED == cl->state) {
|
||||
dev_dbg(&dev->pdev->dev, "successfully connected to FW client.\n");
|
||||
rets = cl->status;
|
||||
goto end;
|
||||
} else {
|
||||
dev_dbg(&dev->pdev->dev, "failed to connect to FW client.cl->state = %d.\n",
|
||||
cl->state);
|
||||
if (!err) {
|
||||
dev_dbg(&dev->pdev->dev,
|
||||
"wait_event_interruptible_timeout failed on client"
|
||||
" connect message fw response message.\n");
|
||||
}
|
||||
rets = -EFAULT;
|
||||
|
||||
mei_io_list_flush(&dev->ctrl_rd_list, cl);
|
||||
mei_io_list_flush(&dev->ctrl_wr_list, cl);
|
||||
goto end;
|
||||
}
|
||||
rets = 0;
|
||||
end:
|
||||
dev_dbg(&dev->pdev->dev, "free connect cb memory.");
|
||||
mei_io_cb_free(cb);
|
||||
return rets;
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_cl_start_read - the start read client message function.
|
||||
*
|
||||
|
||||
@ -562,6 +562,103 @@ err:
|
||||
return rets;
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_ioctl_connect_client - the connect to fw client IOCTL function
|
||||
*
|
||||
* @dev: the device structure
|
||||
* @data: IOCTL connect data, input and output parameters
|
||||
* @file: private data of the file object
|
||||
*
|
||||
* Locking: called under "dev->device_lock" lock
|
||||
*
|
||||
* returns 0 on success, <0 on failure.
|
||||
*/
|
||||
static int mei_ioctl_connect_client(struct file *file,
|
||||
struct mei_connect_client_data *data)
|
||||
{
|
||||
struct mei_device *dev;
|
||||
struct mei_client *client;
|
||||
struct mei_cl *cl;
|
||||
int i;
|
||||
int rets;
|
||||
|
||||
cl = file->private_data;
|
||||
if (WARN_ON(!cl || !cl->dev))
|
||||
return -ENODEV;
|
||||
|
||||
dev = cl->dev;
|
||||
|
||||
if (dev->dev_state != MEI_DEV_ENABLED) {
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
|
||||
if (cl->state != MEI_FILE_INITIALIZING &&
|
||||
cl->state != MEI_FILE_DISCONNECTED) {
|
||||
rets = -EBUSY;
|
||||
goto end;
|
||||
}
|
||||
|
||||
/* find ME client we're trying to connect to */
|
||||
i = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
|
||||
if (i >= 0 && !dev->me_clients[i].props.fixed_address) {
|
||||
cl->me_client_id = dev->me_clients[i].client_id;
|
||||
cl->state = MEI_FILE_CONNECTING;
|
||||
}
|
||||
|
||||
dev_dbg(&dev->pdev->dev, "Connect to FW Client ID = %d\n",
|
||||
cl->me_client_id);
|
||||
dev_dbg(&dev->pdev->dev, "FW Client - Protocol Version = %d\n",
|
||||
dev->me_clients[i].props.protocol_version);
|
||||
dev_dbg(&dev->pdev->dev, "FW Client - Max Msg Len = %d\n",
|
||||
dev->me_clients[i].props.max_msg_length);
|
||||
|
||||
/* if we're connecting to amthi client then we will use the
|
||||
* existing connection
|
||||
*/
|
||||
if (uuid_le_cmp(data->in_client_uuid, mei_amthi_guid) == 0) {
|
||||
dev_dbg(&dev->pdev->dev, "FW Client is amthi\n");
|
||||
if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) {
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
clear_bit(cl->host_client_id, dev->host_clients_map);
|
||||
mei_cl_unlink(cl);
|
||||
|
||||
kfree(cl);
|
||||
cl = NULL;
|
||||
file->private_data = &dev->iamthif_cl;
|
||||
|
||||
client = &data->out_client_properties;
|
||||
client->max_msg_length =
|
||||
dev->me_clients[i].props.max_msg_length;
|
||||
client->protocol_version =
|
||||
dev->me_clients[i].props.protocol_version;
|
||||
rets = dev->iamthif_cl.status;
|
||||
|
||||
goto end;
|
||||
}
|
||||
|
||||
if (cl->state != MEI_FILE_CONNECTING) {
|
||||
rets = -ENODEV;
|
||||
goto end;
|
||||
}
|
||||
|
||||
|
||||
/* prepare the output buffer */
|
||||
client = &data->out_client_properties;
|
||||
client->max_msg_length = dev->me_clients[i].props.max_msg_length;
|
||||
client->protocol_version = dev->me_clients[i].props.protocol_version;
|
||||
dev_dbg(&dev->pdev->dev, "Can connect?\n");
|
||||
|
||||
|
||||
rets = mei_cl_connect(cl, file);
|
||||
|
||||
end:
|
||||
dev_dbg(&dev->pdev->dev, "free connect cb memory.");
|
||||
return rets;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* mei_ioctl - the IOCTL function
|
||||
@ -610,6 +707,7 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
|
||||
rets = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
|
||||
rets = mei_ioctl_connect_client(file, connect_data);
|
||||
|
||||
/* if all is ok, copying the data back to user. */
|
||||
|
||||
@ -340,11 +340,6 @@ irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id);
|
||||
irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id);
|
||||
void mei_timer(struct work_struct *work);
|
||||
|
||||
/*
|
||||
* MEI input output function prototype
|
||||
*/
|
||||
int mei_ioctl_connect_client(struct file *file,
|
||||
struct mei_connect_client_data *data);
|
||||
/*
|
||||
* AMTHIF - AMT Host Interface Functions
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user