diff options
author | Tomas Winkler <tomas.winkler@intel.com> | 2013-01-08 21:07:13 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-09 00:40:44 (GMT) |
commit | 9ca9050b3df690d9d44e39424ab2a531120af936 (patch) | |
tree | 06664064214caea9635e66025ad342f60cfc9662 /drivers/misc/mei/iorw.c | |
parent | 0edb23fc3451c84350edcc999c023d225a49530d (diff) | |
download | linux-fsl-qoriq-9ca9050b3df690d9d44e39424ab2a531120af936.tar.xz |
mei: move client functions to client.c
This file now contains me and host client functions
and also io callback helpers
We also kill iorw.c which is no longer needed
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/iorw.c')
-rw-r--r-- | drivers/misc/mei/iorw.c | 367 |
1 files changed, 0 insertions, 367 deletions
diff --git a/drivers/misc/mei/iorw.c b/drivers/misc/mei/iorw.c deleted file mode 100644 index 4328c2d..0000000 --- a/drivers/misc/mei/iorw.c +++ /dev/null @@ -1,367 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - - -#include <linux/kernel.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/aio.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <linux/ioctl.h> -#include <linux/cdev.h> -#include <linux/list.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/uuid.h> -#include <linux/jiffies.h> -#include <linux/uaccess.h> - - -#include <linux/mei.h> - -#include "mei_dev.h" -#include "hbm.h" -#include "interface.h" - -/** - * mei_io_cb_free - free mei_cb_private related memory - * - * @cb: mei callback struct - */ -void mei_io_cb_free(struct mei_cl_cb *cb) -{ - if (cb == NULL) - return; - - kfree(cb->request_buffer.data); - kfree(cb->response_buffer.data); - kfree(cb); -} -/** - * mei_io_cb_init - allocate and initialize io callback - * - * @cl - mei client - * @file: pointer to file structure - * - * returns mei_cl_cb pointer or NULL; - */ -struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, struct file *fp) -{ - struct mei_cl_cb *cb; - - cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); - if (!cb) - return NULL; - - mei_io_list_init(cb); - - cb->file_object = fp; - cb->cl = cl; - cb->buf_idx = 0; - return cb; -} - - -/** - * mei_io_cb_alloc_req_buf - allocate request buffer - * - * @cb - io callback structure - * @size: size of the buffer - * - * returns 0 on success - * -EINVAL if cb is NULL - * -ENOMEM if allocation failed - */ -int mei_io_cb_alloc_req_buf(struct mei_cl_cb *cb, size_t length) -{ - if (!cb) - return -EINVAL; - - if (length == 0) - return 0; - - cb->request_buffer.data = kmalloc(length, GFP_KERNEL); - if (!cb->request_buffer.data) - return -ENOMEM; - cb->request_buffer.size = length; - return 0; -} -/** - * mei_io_cb_alloc_req_buf - allocate respose buffer - * - * @cb - io callback structure - * @size: size of the buffer - * - * returns 0 on success - * -EINVAL if cb is NULL - * -ENOMEM if allocation failed - */ -int mei_io_cb_alloc_resp_buf(struct mei_cl_cb *cb, size_t length) -{ - if (!cb) - return -EINVAL; - - if (length == 0) - return 0; - - cb->response_buffer.data = kmalloc(length, GFP_KERNEL); - if (!cb->response_buffer.data) - return -ENOMEM; - cb->response_buffer.size = length; - return 0; -} - - -/** - * mei_me_cl_by_id return index to me_clients for client_id - * - * @dev: the device structure - * @client_id: me client id - * - * Locking: called under "dev->device_lock" lock - * - * returns index on success, -ENOENT on failure. - */ - -int mei_me_cl_by_id(struct mei_device *dev, u8 client_id) -{ - int i; - for (i = 0; i < dev->me_clients_num; i++) - if (dev->me_clients[i].client_id == client_id) - break; - if (WARN_ON(dev->me_clients[i].client_id != client_id)) - return -ENOENT; - - if (i == dev->me_clients_num) - return -ENOENT; - - return i; -} - -/** - * 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_me_cl_unlink(dev, 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_other_client_is_connecting(dev, 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_start_read - the start read client message function. - * - * @dev: the device structure - * @if_num: minor number - * @cl: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int mei_start_read(struct mei_device *dev, struct mei_cl *cl) -{ - struct mei_cl_cb *cb; - int rets; - int i; - - if (cl->state != MEI_FILE_CONNECTED) - return -ENODEV; - - if (dev->dev_state != MEI_DEV_ENABLED) - return -ENODEV; - - if (cl->read_pending || cl->read_cb) { - dev_dbg(&dev->pdev->dev, "read is pending.\n"); - return -EBUSY; - } - i = mei_me_cl_by_id(dev, cl->me_client_id); - if (i < 0) { - dev_err(&dev->pdev->dev, "no such me client %d\n", - cl->me_client_id); - return -ENODEV; - } - - cb = mei_io_cb_init(cl, NULL); - if (!cb) - return -ENOMEM; - - rets = mei_io_cb_alloc_resp_buf(cb, - dev->me_clients[i].props.max_msg_length); - if (rets) - goto err; - - cb->fop_type = MEI_FOP_READ; - cl->read_cb = cb; - if (dev->mei_host_buffer_is_empty) { - dev->mei_host_buffer_is_empty = false; - if (mei_hbm_cl_flow_control_req(dev, cl)) { - rets = -ENODEV; - goto err; - } - list_add_tail(&cb->list, &dev->read_list.list); - } else { - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); - } - return rets; -err: - mei_io_cb_free(cb); - return rets; -} - |