diff options
| -rw-r--r-- | drivers/staging/mei/iorw.c | 604 | ||||
| -rw-r--r-- | drivers/staging/mei/main.c | 1349 | ||||
| -rw-r--r-- | drivers/staging/mei/mei_dev.h | 422 | ||||
| -rw-r--r-- | drivers/staging/mei/mei_version.h | 31 |
4 files changed, 2406 insertions, 0 deletions
diff --git a/drivers/staging/mei/iorw.c b/drivers/staging/mei/iorw.c new file mode 100644 index 0000000..697a277 --- /dev/null +++ b/drivers/staging/mei/iorw.c @@ -0,0 +1,604 @@ +/* + * + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2003-2011, 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 "mei_dev.h" +#include "hw.h" +#include "mei.h" +#include "interface.h" +#include "mei_version.h" + + + +/** + * 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; + struct mei_cl *cl_pos = NULL; + struct mei_cl *cl_next = NULL; + long timeout = 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 = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); + if (!cb) { + rets = -ENOMEM; + goto end; + } + INIT_LIST_HEAD(&cb->cb_list); + + cb->major_file_operations = MEI_IOCTL; + + if (dev->mei_state != MEI_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_find_me_client_index(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 so we will use the exist + * 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); + list_for_each_entry_safe(cl_pos, cl_next, + &dev->file_list, link) { + if (mei_fe_same_id(cl, cl_pos)) { + dev_dbg(&dev->pdev->dev, + "remove file private data node host" + " client = %d, ME client = %d.\n", + cl_pos->host_client_id, + cl_pos->me_client_id); + list_del(&cl_pos->link); + } + + } + dev_dbg(&dev->pdev->dev, "free file private data memory.\n"); + 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 = 0; + if (!mei_connect(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; + cb->file_private = cl; + list_add_tail(&cb->cb_list, + &dev->ctrl_rd_list.mei_cb. + cb_list); + } + + + } else { + dev_dbg(&dev->pdev->dev, "Queuing the connect request due to device busy\n"); + cb->file_private = cl; + dev_dbg(&dev->pdev->dev, "add connect cb to control write list.\n"); + list_add_tail(&cb->cb_list, + &dev->ctrl_wr_list.mei_cb.cb_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 * HZ); + + 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_flush_list(&dev->ctrl_rd_list, cl); + mei_flush_list(&dev->ctrl_wr_list, cl); + goto end; + } + rets = 0; +end: + dev_dbg(&dev->pdev->dev, "free connect cb memory."); + kfree(cb); + return rets; +} + +/** + * find_amthi_read_list_entry - finds a amthilist entry for current file + * + * @dev: the device structure + * @file: pointer to file object + * + * returns returned a list entry on success, NULL on failure. + */ +struct mei_cl_cb *find_amthi_read_list_entry( + struct mei_device *dev, + struct file *file) +{ + struct mei_cl *cl_temp; + struct mei_cl_cb *cb_pos = NULL; + struct mei_cl_cb *cb_next = NULL; + + if (!dev->amthi_read_complete_list.status && + !list_empty(&dev->amthi_read_complete_list.mei_cb.cb_list)) { + list_for_each_entry_safe(cb_pos, cb_next, + &dev->amthi_read_complete_list.mei_cb.cb_list, cb_list) { + cl_temp = (struct mei_cl *)cb_pos->file_private; + if (cl_temp && cl_temp == &dev->iamthif_cl && + cb_pos->file_object == file) + return cb_pos; + } + } + return NULL; +} + +/** + * amthi_read - read data from AMTHI client + * + * @dev: the device structure + * @if_num: minor number + * @file: pointer to file object + * @*ubuf: pointer to user data in user space + * @length: data length to read + * @offset: data read offset + * + * Locking: called under "dev->device_lock" lock + * + * returns + * returned data length on success, + * zero if no data to read, + * negative on failure. + */ +int amthi_read(struct mei_device *dev, struct file *file, + char __user *ubuf, size_t length, loff_t *offset) +{ + int rets; + int wait_ret; + struct mei_cl_cb *cb = NULL; + struct mei_cl *cl = file->private_data; + unsigned long timeout; + int i; + + /* Only Posible if we are in timeout */ + if (!cl || cl != &dev->iamthif_cl) { + dev_dbg(&dev->pdev->dev, "bad file ext.\n"); + return -ETIMEDOUT; + } + + for (i = 0; i < dev->num_mei_me_clients; i++) { + if (dev->me_clients[i].client_id == + dev->iamthif_cl.me_client_id) + break; + } + + if (i == dev->num_mei_me_clients) { + dev_dbg(&dev->pdev->dev, "amthi client not found.\n"); + return -ENODEV; + } + if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) + return -ENODEV; + + dev_dbg(&dev->pdev->dev, "checking amthi data\n"); + cb = find_amthi_read_list_entry(dev, file); + + /* Check for if we can block or not*/ + if (cb == NULL && file->f_flags & O_NONBLOCK) + return -EAGAIN; + + + dev_dbg(&dev->pdev->dev, "waiting for amthi data\n"); + while (cb == NULL) { + /* unlock the Mutex */ + mutex_unlock(&dev->device_lock); + + wait_ret = wait_event_interruptible(dev->iamthif_cl.wait, + (cb = find_amthi_read_list_entry(dev, file))); + + if (wait_ret) + return -ERESTARTSYS; + + dev_dbg(&dev->pdev->dev, "woke up from sleep\n"); + + /* Locking again the Mutex */ + mutex_lock(&dev->device_lock); + } + + + dev_dbg(&dev->pdev->dev, "Got amthi data\n"); + dev->iamthif_timer = 0; + + if (cb) { + timeout = cb->read_time + + msecs_to_jiffies(IAMTHIF_READ_TIMER); + dev_dbg(&dev->pdev->dev, "amthi timeout = %lud\n", + timeout); + + if (time_after(jiffies, timeout)) { + dev_dbg(&dev->pdev->dev, "amthi Time out\n"); + /* 15 sec for the message has expired */ + list_del(&cb->cb_list); + rets = -ETIMEDOUT; + goto free; + } + } + /* if the whole message will fit remove it from the list */ + if (cb->information >= *offset && + length >= (cb->information - *offset)) + list_del(&cb->cb_list); + else if (cb->information > 0 && cb->information <= *offset) { + /* end of the message has been reached */ + list_del(&cb->cb_list); + rets = 0; + goto free; + } + /* else means that not full buffer will be read and do not + * remove message from deletion list + */ + + dev_dbg(&dev->pdev->dev, "amthi cb->response_buffer size - %d\n", + cb->response_buffer.size); + dev_dbg(&dev->pdev->dev, "amthi cb->information - %lu\n", + cb->information); + + /* length is being turncated to PAGE_SIZE, however, + * the information may be longer */ + length = min_t(size_t, length, (cb->information - *offset)); + + if (copy_to_user(ubuf, + cb->response_buffer.data + *offset, + length)) + rets = -EFAULT; + else { + rets = length; + if ((*offset + length) < cb->information) { + *offset += length; + goto out; + } + } +free: + dev_dbg(&dev->pdev->dev, "free amthi cb memory.\n"); + *offset = 0; + mei_free_cb_private(cb); +out: + 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 = 0; + int i; + + if (cl->state != MEI_FILE_CONNECTED) + return -ENODEV; + + if (dev->mei_state != MEI_ENABLED) + return -ENODEV; + + dev_dbg(&dev->pdev->dev, "check if read is pending.\n"); + if (cl->read_pending || cl->read_cb) { + dev_dbg(&dev->pdev->dev, "read is pending.\n"); + return -EBUSY; + } + + cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); + if (!cb) + return -ENOMEM; + + dev_dbg(&dev->pdev->dev, "allocation call back successful. host client = %d, ME client = %d\n", + cl->host_client_id, cl->me_client_id); + + for (i = 0; i < dev->num_mei_me_clients; i++) { + if (dev->me_clients[i].client_id == cl->me_client_id) + break; + + } + + if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) { + rets = -ENODEV; + goto unlock; + } + + if (i == dev->num_mei_me_clients) { + rets = -ENODEV; + goto unlock; + } + + cb->response_buffer.size = dev->me_clients[i].props.max_msg_length; + cb->response_buffer.data = + kmalloc(cb->response_buffer.size, GFP_KERNEL); + if (!cb->response_buffer.data) { + rets = -ENOMEM; + goto unlock; + } + dev_dbg(&dev->pdev->dev, "allocation call back data success.\n"); + cb->major_file_operations = MEI_READ; + /* make sure information is zero before we start */ + cb->information = 0; + cb->file_private = (void *) cl; + cl->read_cb = cb; + if (dev->mei_host_buffer_is_empty) { + dev->mei_host_buffer_is_empty = 0; + if (!mei_send_flow_control(dev, cl)) { + rets = -ENODEV; + goto unlock; + } else { + list_add_tail(&cb->cb_list, + &dev->read_list.mei_cb.cb_list); + } + } else { + list_add_tail(&cb->cb_list, + &dev->ctrl_wr_list.mei_cb.cb_list); + } + return rets; +unlock: + mei_free_cb_private(cb); + return rets; +} + +/** + * amthi_write - write iamthif data to amthi client + * + * @dev: the device structure + * @cb: mei call back struct + * + * returns 0 on success, <0 on failure. + */ +int amthi_write(struct mei_device *dev, struct mei_cl_cb *cb) +{ + struct mei_msg_hdr mei_hdr; + int ret; + + if (!dev || !cb) + return -ENODEV; + + dev_dbg(&dev->pdev->dev, "write data to amthi client.\n"); + + dev->iamthif_state = MEI_IAMTHIF_WRITING; + dev->iamthif_current_cb = cb; + dev->iamthif_file_object = cb->file_object; + dev->iamthif_canceled = 0; + dev->iamthif_ioctl = 1; + dev->iamthif_msg_buf_size = cb->request_buffer.size; + memcpy(dev->iamthif_msg_buf, cb->request_buffer.data, + cb->request_buffer.size); + + ret = mei_flow_ctrl_creds(dev, &dev->iamthif_cl); + if (ret < 0) + return ret; + + if (ret && dev->mei_host_buffer_is_empty) { + ret = 0; + dev->mei_host_buffer_is_empty = 0; + if (cb->request_buffer.size > + (((dev->host_hw_state & H_CBD) >> 24) * sizeof(u32)) + -sizeof(struct mei_msg_hdr)) { + mei_hdr.length = + (((dev->host_hw_state & H_CBD) >> 24) * + sizeof(u32)) - sizeof(struct mei_msg_hdr); + mei_hdr.msg_complete = 0; + } else { + mei_hdr.length = cb->request_buffer.size; + mei_hdr.msg_complete = 1; + } + + mei_hdr.host_addr = dev->iamthif_cl.host_client_id; + mei_hdr.me_addr = dev->iamthif_cl.me_client_id; + mei_hdr.reserved = 0; + dev->iamthif_msg_buf_index += mei_hdr.length; + if (!mei_write_message(dev, &mei_hdr, + (unsigned char *)(dev->iamthif_msg_buf), + mei_hdr.length)) + return -ENODEV; + + if (mei_hdr.msg_complete) { + if (mei_flow_ctrl_reduce(dev, &dev->iamthif_cl)) + return -ENODEV; + dev->iamthif_flow_control_pending = 1; + dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL; + dev_dbg(&dev->pdev->dev, "add amthi cb to write waiting list\n"); + dev->iamthif_current_cb = cb; + dev->iamthif_file_object = cb->file_object; + list_add_tail(&cb->cb_list, + &dev->write_waiting_list.mei_cb.cb_list); + } else { + dev_dbg(&dev->pdev->dev, "message does not complete, " + "so add amthi cb to write list.\n"); + list_add_tail(&cb->cb_list, + &dev->write_list.mei_cb.cb_list); + } + } else { + if (!(dev->mei_host_buffer_is_empty)) + dev_dbg(&dev->pdev->dev, "host buffer is not empty"); + + dev_dbg(&dev->pdev->dev, "No flow control credentials, " + "so add iamthif cb to write list.\n"); + list_add_tail(&cb->cb_list, + &dev->write_list.mei_cb.cb_list); + } + return 0; +} + +/** + * iamthif_ioctl_send_msg - send cmd data to amthi client + * + * @dev: the device structure + * + * returns 0 on success, <0 on failure. + */ +void run_next_iamthif_cmd(struct mei_device *dev) +{ + struct mei_cl *cl_tmp; + struct mei_cl_cb *cb_pos = NULL; + struct mei_cl_cb *cb_next = NULL; + int status; + + if (!dev) + return; + + dev->iamthif_msg_buf_size = 0; + dev->iamthif_msg_buf_index = 0; + dev->iamthif_canceled = 0; + dev->iamthif_ioctl = 1; + dev->iamthif_state = MEI_IAMTHIF_IDLE; + dev->iamthif_timer = 0; + dev->iamthif_file_object = NULL; + + if (dev->amthi_cmd_list.status == 0 && + !list_empty(&dev->amthi_cmd_list.mei_cb.cb_list)) { + dev_dbg(&dev->pdev->dev, "complete amthi cmd_list cb.\n"); + + list_for_each_entry_safe(cb_pos, cb_next, + &dev->amthi_cmd_list.mei_cb.cb_list, cb_list) { + list_del(&cb_pos->cb_list); + cl_tmp = (struct mei_cl *)cb_pos->file_private; + + if (cl_tmp && cl_tmp == &dev->iamthif_cl) { + status = amthi_write(dev, cb_pos); + if (status) { + dev_dbg(&dev->pdev->dev, + "amthi write failed status = %d\n", + status); + return; + } + break; + } + } + } +} + +/** + * mei_free_cb_private - free mei_cb_private related memory + * + * @cb: mei callback struct + */ +void mei_free_cb_private(struct mei_cl_cb *cb) +{ + if (cb == NULL) + return; + + kfree(cb->request_buffer.data); + kfree(cb->response_buffer.data); + kfree(cb); +} diff --git a/drivers/staging/mei/main.c b/drivers/staging/mei/main.c new file mode 100644 index 0000000..16ae1a8 --- /dev/null +++ b/drivers/staging/mei/main.c @@ -0,0 +1,1349 @@ +/* + * + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2003-2011, 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/module.h> +#include <linux/moduleparam.h> +#include <linux/kernel.h> +#include <linux/device.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/poll.h> +#include <linux/init.h> +#include <linux/ioctl.h> +#include <linux/cdev.h> +#include <linux/version.h> +#include <linux/sched.h> +#include <linux/uuid.h> +#include <linux/compat.h> +#include <linux/jiffies.h> +#include <linux/interrupt.h> + +#include "mei_dev.h" +#include "mei.h" +#include "interface.h" +#include "mei_version.h" + + +#define MEI_READ_TIMEOUT 45 +#define MEI_DRIVER_NAME "mei" +#define MEI_DEV_NAME "mei" + +/* + * mei driver strings + */ +static char mei_driver_name[] = MEI_DRIVER_NAME; +static const char mei_driver_string[] = "Intel(R) Management Engine Interface"; +static const char mei_driver_version[] = MEI_DRIVER_VERSION; + +/* mei char device for registration */ +static struct cdev mei_cdev; + +/* major number for device */ +static int mei_major; +/* The device pointer */ +/* Currently this driver works as long as there is only a single AMT device. */ +static struct pci_dev *mei_device; + +static struct class *mei_class; + + +/* mei_pci_tbl - PCI Device ID Table */ +static DEFINE_PCI_DEVICE_TABLE(mei_pci_tbl) = { + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82946GZ)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G35)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82Q965)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G965)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82GM965)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82GME965)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82Q35)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82G33)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82Q33)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82X38)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_3200)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_6)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_7)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_8)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_9)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_10)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_2)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_3)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_4)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_2)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_3)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_4)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_IBXPK_1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_IBXPK_2)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_CPT_1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PBG_1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_2)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_3)}, + + /* required last entry */ + {0, } +}; + +MODULE_DEVICE_TABLE(pci, mei_pci_tbl); + +static DEFINE_MUTEX(mei_mutex); + +/** + * mei_probe - Device Initialization Routine + * + * @pdev: PCI device structure + * @ent: entry in kcs_pci_tbl + * + * returns 0 on success, <0 on failure. + */ +static int __devinit mei_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct mei_device *dev; + int err; + + mutex_lock(&mei_mutex); + if (mei_device) { + err = -EEXIST; + goto end; + } + /* enable pci dev */ + err = pci_enable_device(pdev); + if (err) { + printk(KERN_ERR "mei: Failed to enable pci device.\n"); + goto end; + } + /* set PCI host mastering */ + pci_set_master(pdev); + /* pci request regions for mei driver */ + err = pci_request_regions(pdev, mei_driver_name); + if (err) { + printk(KERN_ERR "mei: Failed to get pci regions.\n"); + goto disable_device; + } + /* allocates and initializes the mei dev structure */ + dev = init_mei_device(pdev); + if (!dev) { + err = -ENOMEM; + goto release_regions; + } + /* mapping IO device memory */ + dev->mem_addr = pci_iomap(pdev, 0, 0); + if (!dev->mem_addr) { + printk(KERN_ERR "mei: mapping I/O device memory failure.\n"); + err = -ENOMEM; + goto free_device; + } + /* request and enable interrupt */ + err = request_threaded_irq(pdev->irq, + mei_interrupt_quick_handler, + mei_interrupt_thread_handler, + IRQF_SHARED, mei_driver_name, dev); + if (err) { + printk(KERN_ERR "mei: request_threaded_irq failure. irq = %d\n", + pdev->irq); + goto unmap_memory; + } + INIT_DELAYED_WORK(&dev->wd_work, mei_wd_timer); + if (mei_hw_init(dev)) { + printk(KERN_ERR "mei: Init hw failure.\n"); + err = -ENODEV; + goto release_irq; + } + mei_device = pdev; + pci_set_drvdata(pdev, dev); + schedule_delayed_work(&dev->wd_work, HZ); + + mutex_unlock(&mei_mutex); + + pr_debug("mei: Driver initialization successful.\n"); + + return 0; + +release_irq: + /* disable interrupts */ + dev->host_hw_state = mei_hcsr_read(dev); + mei_disable_interrupts(dev); + flush_scheduled_work(); + free_irq(pdev->irq, dev); +unmap_memory: + pci_iounmap(pdev, dev->mem_addr); +free_device: + kfree(dev); +release_regions: + pci_release_regions(pdev); +disable_device: + pci_disable_device(pdev); +end: + mutex_unlock(&mei_mutex); + printk(KERN_ERR "mei: Driver initialization failed.\n"); + return err; +} + +/** + * mei_remove - Device Removal Routine + * + * @pdev: PCI device structure + * + * mei_remove is called by the PCI subsystem to alert the driver + * that it should release a PCI device. + */ +static void __devexit mei_remove(struct pci_dev *pdev) +{ + struct mei_device *dev; + + if (mei_device != pdev) + return; + + dev = pci_get_drvdata(pdev); + if (!dev) + return; + + mutex_lock(&dev->device_lock); + + mei_wd_stop(dev, false); + + mei_device = NULL; + + if (dev->iamthif_cl.state == MEI_FILE_CONNECTED) { + dev->iamthif_cl.state = MEI_FILE_DISCONNECTING; + mei_disconnect_host_client(dev, &dev->iamthif_cl); + } + if (dev->wd_cl.state == MEI_FILE_CONNECTED) { + dev->wd_cl.state = MEI_FILE_DISCONNECTING; + mei_disconnect_host_client(dev, &dev->wd_cl); + } + + /* remove entry if already in list */ + dev_dbg(&pdev->dev, "list del iamthif and wd file list.\n"); + mei_remove_client_from_file_list(dev, dev->wd_cl.host_client_id); + mei_remove_client_from_file_list(dev, dev->iamthif_cl.host_client_id); + + dev->iamthif_current_cb = NULL; + dev->num_mei_me_clients = 0; + + mutex_unlock(&dev->device_lock); + + flush_scheduled_work(); + + /* disable interrupts */ + mei_disable_interrupts(dev); + + free_irq(pdev->irq, dev); + pci_set_drvdata(pdev, NULL); + + if (dev->mem_addr) + pci_iounmap(pdev, dev->mem_addr); + + kfree(dev); + + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +/** + * mei_clear_list - removes all callbacks associated with file + * from mei_cb_list + * + * @dev: device structure. + * @file: file structure + * @mei_cb_list: callbacks list + * + * mei_clear_list is called to clear resources associated with file + * when application calls close function or Ctrl-C was pressed + * + * returns true if callback removed from the list, false otherwise + */ +static bool mei_clear_list(struct mei_device *dev, + struct file *file, struct list_head *mei_cb_list) +{ + struct mei_cl_cb *cb_pos = NULL; + struct mei_cl_cb *cb_next = NULL; + struct file *file_temp; + bool removed = false; + + /* list all list member */ + list_for_each_entry_safe(cb_pos, cb_next, mei_cb_list, cb_list) { + file_temp = (struct file *)cb_pos->file_object; + /* check if list member associated with a file */ + if (file_temp == file) { + /* remove member from the list */ + list_del(&cb_pos->cb_list); + /* check if cb equal to current iamthif cb */ + if (dev->iamthif_current_cb == cb_pos) { + dev->iamthif_current_cb = NULL; + /* send flow control to iamthif client */ + mei_send_flow_control(dev, &dev->iamthif_cl); + } + /* free all allocated buffers */ + mei_free_cb_private(cb_pos); + cb_pos = NULL; + removed = true; + } + } + return removed; +} + +/** + * mei_clear_lists - removes all callbacks associated with file + * + * @dev: device structure + * @file: file structure + * + * mei_clear_lists is called to clear resources associated with file + * when application calls close function or Ctrl-C was pressed + * + * returns true if callback removed from the list, false otherwise + */ +static bool mei_clear_lists(struct mei_device *dev, struct file *file) +{ + bool removed = false; + + /* remove callbacks associated with a file */ + mei_clear_list(dev, file, &dev->amthi_cmd_list.mei_cb.cb_list); + if (mei_clear_list(dev, file, + &dev->amthi_read_complete_list.mei_cb.cb_list)) + removed = true; + + mei_clear_list(dev, file, &dev->ctrl_rd_list.mei_cb.cb_list); + + if (mei_clear_list(dev, file, &dev->ctrl_wr_list.mei_cb.cb_list)) + removed = true; + + if (mei_clear_list(dev, file, &dev->write_waiting_list.mei_cb.cb_list)) + removed = true; + + if (mei_clear_list(dev, file, &dev->write_list.mei_cb.cb_list)) + removed = true; + + /* check if iamthif_current_cb not NULL */ + if (dev->iamthif_current_cb && !removed) { + /* check file and iamthif current cb association */ + if (dev->iamthif_current_cb->file_object == file) { + /* remove cb */ + mei_free_cb_private(dev->iamthif_current_cb); + dev->iamthif_current_cb = NULL; + removed = true; + } + } + return removed; +} +/** + * find_read_list_entry - find read list entry + * + * @dev: device structure + * @file: pointer to file structure + * + * returns cb on success, NULL on error + */ +static struct mei_cl_cb *find_read_list_entry( + struct mei_device *dev, + struct mei_cl *cl) +{ + struct mei_cl_cb *cb_pos = NULL; + struct mei_cl_cb *cb_next = NULL; + struct mei_cl *cl_list_temp; + + if (!dev->read_list.status && + !list_empty(&dev->read_list.mei_cb.cb_list)) { + + dev_dbg(&dev->pdev->dev, "remove read_list CB\n"); + list_for_each_entry_safe(cb_pos, cb_next, + &dev->read_list.mei_cb.cb_list, cb_list) { + + cl_list_temp = (struct mei_cl *) + cb_pos->file_private; + + if (cl_list_temp && + mei_fe_same_id(cl, cl_list_temp)) + return cb_pos; + + } + } + return NULL; +} + +/** + * mei_open - the open function + * + * @inode: pointer to inode structure + * @file: pointer to file structure + * + * returns 0 on success, <0 on error + */ +static int mei_open(struct inode *inode, struct file *file) +{ + struct mei_cl *cl; + int if_num = iminor(inode), err; + struct mei_device *dev; + + err = -ENODEV; + if (!mei_device) + goto out; + + dev = pci_get_drvdata(mei_device); + if (if_num != MEI_MINOR_NUMBER || !dev) + goto out; + + mutex_lock(&dev->device_lock); + err = -ENOMEM; + cl = mei_alloc_file_private(dev); + if (!cl) + goto out; + + err = -ENODEV; + if (dev->mei_state != MEI_ENABLED) { + dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED mei_state= %d\n", + dev->mei_state); + goto out_unlock; + } + err = -EMFILE; + if (dev->open_handle_count >= MEI_MAX_OPEN_HANDLE_COUNT) + goto out_unlock; + + cl->host_client_id = find_first_zero_bit(dev->host_clients_map, + MEI_CLIENTS_MAX); + if (cl->host_client_id > MEI_CLIENTS_MAX) + goto out_unlock; + + dev_dbg(&dev->pdev->dev, "client_id = %d\n", cl->host_client_id); + + dev->open_handle_count++; + list_add_tail(&cl->link, &dev->file_list); + + set_bit(cl->host_client_id, dev->host_clients_map); + cl->state = MEI_FILE_INITIALIZING; + cl->sm_state = 0; + + file->private_data = cl; + mutex_unlock(&dev->device_lock); + + return 0; + +out_unlock: + mutex_unlock(&dev->device_lock); + kfree(cl); +out: + return err; +} + +/** + * mei_release - the release function + * + * @inode: pointer to inode structure + * @file: pointer to file structure + * + * returns 0 on success, <0 on error + */ +static int mei_release(struct inode *inode, struct file *file) +{ + struct mei_cl *cl = file->private_data; + struct mei_cl_cb *cb; + struct mei_device *dev; + int rets = 0; + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + if (cl != &dev->iamthif_cl) { + if (cl->state == MEI_FILE_CONNECTED) { + cl->state = MEI_FILE_DISCONNECTING; + dev_dbg(&dev->pdev->dev, + "disconnecting client host client = %d, " + "ME client = %d\n", + cl->host_client_id, + cl->me_client_id); + rets = mei_disconnect_host_client(dev, cl); + } + mei_flush_queues(dev, cl); + dev_dbg(&dev->pdev->dev, "remove client host client = %d, ME client = %d\n", + cl->host_client_id, + cl->me_client_id); + + if (dev->open_handle_count > 0) { + clear_bit(cl->host_client_id, + dev->host_clients_map); + dev->open_handle_count--; + } + mei_remove_client_from_file_list(dev, cl->host_client_id); + + /* free read cb */ + cb = NULL; + if (cl->read_cb) { + cb = find_read_list_entry(dev, cl); + /* Remove entry from read list */ + if (cb) + list_del(&cb->cb_list); + + cb = cl->read_cb; + cl->read_cb = NULL; + } + + file->private_data = NULL; + + if (cb) { + mei_free_cb_private(cb); + cb = NULL; + } + + kfree(cl); + } else { + if (dev->open_handle_count > 0) + dev->open_handle_count--; + + if (dev->iamthif_file_object == file && + dev->iamthif_state != MEI_IAMTHIF_IDLE) { + + dev_dbg(&dev->pdev->dev, "amthi canceled iamthif state %d\n", + dev->iamthif_state); + dev->iamthif_canceled = 1; + if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) { + dev_dbg(&dev->pdev->dev, "run next amthi iamthif cb\n"); + run_next_iamthif_cmd(dev); + } + } + + if (mei_clear_lists(dev, file)) + dev->iamthif_state = MEI_IAMTHIF_IDLE; + + } + mutex_unlock(&dev->device_lock); + return rets; +} + + +/** + * mei_read - the read function. + * + * @file: pointer to file structure + * @ubuf: pointer to user buffer + * @length: buffer length + * @offset: data offset in buffer + * + * returns >=0 data length on success , <0 on error + */ +static ssize_t mei_read(struct file *file, char __user *ubuf, + size_t length, loff_t *offset) +{ + struct mei_cl *cl = file->private_data; + struct mei_cl_cb *cb_pos = NULL; + struct mei_cl_cb *cb = NULL; + struct mei_device *dev; + int i; + int rets; + int err; + + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + if (dev->mei_state != MEI_ENABLED) { + rets = -ENODEV; + goto out; + } + + if ((cl->sm_state & MEI_WD_STATE_INDEPENDENCE_MSG_SENT) == 0) { + /* Do not allow to read watchdog client */ + i = mei_find_me_client_index(dev, mei_wd_guid); + if (i >= 0) { + struct mei_me_client *me_client = &dev->me_clients[i]; + + if (cl->me_client_id == me_client->client_id) { + rets = -EBADF; + goto out; + } + } + } else { + cl->sm_state &= ~MEI_WD_STATE_INDEPENDENCE_MSG_SENT; + } + + if (cl == &dev->iamthif_cl) { + rets = amthi_read(dev, file, ubuf, length, offset); + goto out; + } + + if (cl->read_cb && cl->read_cb->information > *offset) { + cb = cl->read_cb; + goto copy_buffer; + } else if (cl->read_cb && cl->read_cb->information > 0 && + cl->read_cb->information <= *offset) { + cb = cl->read_cb; + rets = 0; + goto free; + } else if ((!cl->read_cb || !cl->read_cb->information) && + *offset > 0) { + /*Offset needs to be cleaned for contingous reads*/ + *offset = 0; + rets = 0; + goto out; + } + + err = mei_start_read(dev, cl); + if (err && err != -EBUSY) { + dev_dbg(&dev->pdev->dev, + "mei start read failure with status = %d\n", err); + rets = err; + goto out; + } + + if (MEI_READ_COMPLETE != cl->reading_state && + !waitqueue_active(&cl->rx_wait)) { + if (file->f_flags & O_NONBLOCK) { + rets = -EAGAIN; + goto out; + } + + mutex_unlock(&dev->device_lock); + + if (wait_event_interruptible(cl->rx_wait, + (MEI_READ_COMPLETE == cl->reading_state || + MEI_FILE_INITIALIZING == cl->state || + MEI_FILE_DISCONNECTED == cl->state || + MEI_FILE_DISCONNECTING == cl->state))) { + if (signal_pending(current)) + return -EINTR; + return -ERESTARTSYS; + } + + mutex_lock(&dev->device_lock); + if (MEI_FILE_INITIALIZING == cl->state || + MEI_FILE_DISCONNECTED == cl->state || + MEI_FILE_DISCONNECTING == cl->state) { + rets = -EBUSY; + goto out; + } + } + + cb = cl->read_cb; + + if (!cb) { + rets = -ENODEV; + goto out; + } + if (cl->reading_state != MEI_READ_COMPLETE) { + rets = 0; + goto out; + } + /* now copy the data to user space */ +copy_buffer: + dev_dbg(&dev->pdev->dev, "cb->response_buffer size - %d\n", + cb->response_buffer.size); + dev_dbg(&dev->pdev->dev, "cb->information - %lu\n", + cb->information); + if (length == 0 || ubuf == NULL || *offset > cb->information) { + rets = -EMSGSIZE; + goto free; + } + + /* length is being turncated to PAGE_SIZE, however, */ + /* information size may be longer */ + length = min_t(size_t, length, (cb->information - *offset)); + + if (copy_to_user(ubuf, + cb->response_buffer.data + *offset, + length)) { + rets = -EFAULT; + goto free; + } + + rets = length; + *offset += length; + if ((unsigned long)*offset < cb->information) + goto out; + +free: + cb_pos = find_read_list_entry(dev, cl); + /* Remove entry from read list */ + if (cb_pos) + list_del(&cb_pos->cb_list); + mei_free_cb_private(cb); + cl->reading_state = MEI_IDLE; + cl->read_cb = NULL; + cl->read_pending = 0; +out: + dev_dbg(&dev->pdev->dev, "end mei read rets= %d\n", rets); + mutex_unlock(&dev->device_lock); + return rets; +} + +/** + * mei_write - the write function. + * + * @file: pointer to file structure + * @ubuf: pointer to user buffer + * @length: buffer length + * @offset: data offset in buffer + * + * returns >=0 data length on success , <0 on error + */ +static ssize_t mei_write(struct file *file, const char __user *ubuf, + size_t length, loff_t *offset) +{ + struct mei_cl *cl = file->private_data; + struct mei_cl_cb *write_cb = NULL; + struct mei_msg_hdr mei_hdr; + struct mei_device *dev; + unsigned long timeout = 0; + int rets; + int i; + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + + if (dev->mei_state != MEI_ENABLED) { + mutex_unlock(&dev->device_lock); + return -ENODEV; + } + + if (cl == &dev->iamthif_cl) { + write_cb = find_amthi_read_list_entry(dev, file); + + if (write_cb) { + timeout = write_cb->read_time + + msecs_to_jiffies(IAMTHIF_READ_TIMER); + + if (time_after(jiffies, timeout) || + cl->reading_state == MEI_READ_COMPLETE) { + *offset = 0; + list_del(&write_cb->cb_list); + mei_free_cb_private(write_cb); + write_cb = NULL; + } + } + } + + /* free entry used in read */ + if (cl->reading_state == MEI_READ_COMPLETE) { + *offset = 0; + write_cb = find_read_list_entry(dev, cl); + if (write_cb) { + list_del(&write_cb->cb_list); + mei_free_cb_private(write_cb); + write_cb = NULL; + cl->reading_state = MEI_IDLE; + cl->read_cb = NULL; + cl->read_pending = 0; + } + } else if (cl->reading_state == MEI_IDLE && + !cl->read_pending) + *offset = 0; + + + write_cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); + if (!write_cb) { + mutex_unlock(&dev->device_lock); + return -ENOMEM; + } + + write_cb->file_object = file; + write_cb->file_private = cl; + write_cb->request_buffer.data = kmalloc(length, GFP_KERNEL); + rets = -ENOMEM; + if (!write_cb->request_buffer.data) + goto unlock_dev; + + dev_dbg(&dev->pdev->dev, "length =%d\n", (int) length); + + rets = -EFAULT; + if (copy_from_user(write_cb->request_buffer.data, ubuf, length)) + goto unlock_dev; + + cl->sm_state = 0; + if (length == 4 && + ((memcmp(mei_wd_state_independence_msg[0], + write_cb->request_buffer.data, 4) == 0) || + (memcmp(mei_wd_state_independence_msg[1], + write_cb->request_buffer.data, 4) == 0) || + (memcmp(mei_wd_state_independence_msg[2], + write_cb->request_buffer.data, 4) == 0))) + cl->sm_state |= MEI_WD_STATE_INDEPENDENCE_MSG_SENT; + + INIT_LIST_HEAD(&write_cb->cb_list); + if (cl == &dev->iamthif_cl) { + write_cb->response_buffer.data = + kmalloc(dev->iamthif_mtu, GFP_KERNEL); + if (!write_cb->response_buffer.data) { + rets = -ENOMEM; + goto unlock_dev; + } + if (dev->mei_state != MEI_ENABLED) { + rets = -ENODEV; + goto unlock_dev; + } + for (i = 0; i < dev->num_mei_me_clients; i++) { + if (dev->me_clients[i].client_id == + dev->iamthif_cl.me_client_id) + break; + } + + if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) { + rets = -ENODEV; + goto unlock_dev; + } + if (i == dev->num_mei_me_clients || + (dev->me_clients[i].client_id != + dev->iamthif_cl.me_client_id)) { + rets = -ENODEV; + goto unlock_dev; + } else if (length > dev->me_clients[i].props.max_msg_length || + length <= 0) { + rets = -EMSGSIZE; + goto unlock_dev; + } + + write_cb->response_buffer.size = dev->iamthif_mtu; + write_cb->major_file_operations = MEI_IOCTL; + write_cb->information = 0; + write_cb->request_buffer.size = length; + if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) { + rets = -ENODEV; + goto unlock_dev; + } + + if (!list_empty(&dev->amthi_cmd_list.mei_cb.cb_list) || + dev->iamthif_state != MEI_IAMTHIF_IDLE) { + dev_dbg(&dev->pdev->dev, "amthi_state = %d\n", + (int) dev->iamthif_state); + dev_dbg(&dev->pdev->dev, "add amthi cb to amthi cmd waiting list\n"); + list_add_tail(&write_cb->cb_list, + &dev->amthi_cmd_list.mei_cb.cb_list); + rets = length; + } else { + dev_dbg(&dev->pdev->dev, "call amthi write\n"); + rets = amthi_write(dev, write_cb); + + if (rets) { + dev_dbg(&dev->pdev->dev, "amthi write failed with status = %d\n", + rets); + goto unlock_dev; + } + rets = length; + } + mutex_unlock(&dev->device_lock); + return rets; + } + + write_cb->major_file_operations = MEI_WRITE; + /* make sure information is zero before we start */ + + write_cb->information = 0; + write_cb->request_buffer.size = length; + + dev_dbg(&dev->pdev->dev, "host client = %d, ME client = %d\n", + cl->host_client_id, cl->me_client_id); + if (cl->state != MEI_FILE_CONNECTED) { + rets = -ENODEV; + dev_dbg(&dev->pdev->dev, "host client = %d, is not connected to ME client = %d", + cl->host_client_id, + cl->me_client_id); + goto unlock_dev; + } + for (i = 0; i < dev->num_mei_me_clients; i++) { + if (dev->me_clients[i].client_id == + cl->me_client_id) + break; + } + if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) { + rets = -ENODEV; + goto unlock_dev; + } + if (i == dev->num_mei_me_clients) { + rets = -ENODEV; + goto unlock_dev; + } + if (length > dev->me_clients[i].props.max_msg_length || length <= 0) { + rets = -EINVAL; + goto unlock_dev; + } + write_cb->file_private = cl; + + rets = mei_flow_ctrl_creds(dev, cl); + if (rets < 0) + goto unlock_dev; + + if (rets && dev->mei_host_buffer_is_empty) { + rets = 0; + dev->mei_host_buffer_is_empty = 0; + if (length > ((((dev->host_hw_state & H_CBD) >> 24) * + sizeof(u32)) - sizeof(struct mei_msg_hdr))) { + + mei_hdr.length = + (((dev->host_hw_state & H_CBD) >> 24) * + sizeof(u32)) - + sizeof(struct mei_msg_hdr); + mei_hdr.msg_complete = 0; + } else { + mei_hdr.length = length; + mei_hdr.msg_complete = 1; + } + mei_hdr.host_addr = cl->host_client_id; + mei_hdr.me_addr = cl->me_client_id; + mei_hdr.reserved = 0; + dev_dbg(&dev->pdev->dev, "call mei_write_message header=%08x.\n", + *((u32 *) &mei_hdr)); + if (!mei_write_message(dev, &mei_hdr, + (unsigned char *) (write_cb->request_buffer.data), + mei_hdr.length)) { + rets = -ENODEV; + goto unlock_dev; + } + cl->writing_state = MEI_WRITING; + write_cb->information = mei_hdr.length; + if (mei_hdr.msg_complete) { + if (mei_flow_ctrl_reduce(dev, cl)) { + rets = -ENODEV; + goto unlock_dev; + } + list_add_tail(&write_cb->cb_list, + &dev->write_waiting_list.mei_cb.cb_list); + } else { + list_add_tail(&write_cb->cb_list, + &dev->write_list.mei_cb.cb_list); + } + + } else { + + write_cb->information = 0; + cl->writing_state = MEI_WRITING; + list_add_tail(&write_cb->cb_list, + &dev->write_list.mei_cb.cb_list); + } + mutex_unlock(&dev->device_lock); + return length; + +unlock_dev: + mutex_unlock(&dev->device_lock); + mei_free_cb_private(write_cb); + return rets; +} + + +/** + * mei_ioctl - the IOCTL function + * + * @file: pointer to file structure + * @cmd: ioctl command + * @data: pointer to mei message structure + * + * returns 0 on success , <0 on error + */ +static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) +{ + struct mei_device *dev; + struct mei_cl *cl = file->private_data; + struct mei_connect_client_data *connect_data = NULL; + int rets; + + if (cmd != IOCTL_MEI_CONNECT_CLIENT) + return -EINVAL; + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + dev = cl->dev; + + dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd); + + mutex_lock(&dev->device_lock); + if (dev->mei_state != MEI_ENABLED) { + rets = -ENODEV; + goto out; + } + + dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n"); + + connect_data = kzalloc(sizeof(struct mei_connect_client_data), + GFP_KERNEL); + if (!connect_data) { + rets = -ENOMEM; + goto out; + } + dev_dbg(&dev->pdev->dev, "copy connect data from user\n"); + if (copy_from_user(connect_data, (char __user *)data, + sizeof(struct mei_connect_client_data))) { + dev_dbg(&dev->pdev->dev, "failed to copy data from userland\n"); + rets = -EFAULT; + goto out; + } + rets = mei_ioctl_connect_client(file, connect_data); + + /* if all is ok, copying the data back to user. */ + if (rets) + goto out; + + dev_dbg(&dev->pdev->dev, "copy connect data to user\n"); + if (copy_to_user((char __user *)data, connect_data, + sizeof(struct mei_connect_client_data))) { + dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n"); + rets = -EFAULT; + goto out; + } + +out: + kfree(connect_data); + mutex_unlock(&dev->device_lock); + return rets; +} + +/** + * mei_compat_ioctl - the compat IOCTL function + * + * @file: pointer to file structure + * @cmd: ioctl command + * @data: pointer to mei message structure + * + * returns 0 on success , <0 on error + */ +#ifdef CONFIG_COMPAT +static long mei_compat_ioctl(struct file *file, + unsigned int cmd, unsigned long data) +{ + return mei_ioctl(file, cmd, (unsigned long)compat_ptr(data)); +} +#endif + + +/** + * mei_poll - the poll function + * + * @file: pointer to file structure + * @wait: pointer to poll_table structure + * + * returns poll mask + */ +static unsigned int mei_poll(struct file *file, poll_table *wait) +{ + struct mei_cl *cl = file->private_data; + struct mei_device *dev; + unsigned int mask = 0; + + if (WARN_ON(!cl || !cl->dev)) + return mask; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + + if (dev->mei_state != MEI_ENABLED) + goto out; + + + if (cl == &dev->iamthif_cl) { + mutex_unlock(&dev->device_lock); + poll_wait(file, &dev->iamthif_cl.wait, wait); + mutex_lock(&dev->device_lock); + if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE && + dev->iamthif_file_object == file) { + mask |= (POLLIN | POLLRDNORM); + dev_dbg(&dev->pdev->dev, "run next amthi cb\n"); + run_next_iamthif_cmd(dev); + } + goto out; + } + + mutex_unlock(&dev->device_lock); + poll_wait(file, &cl->tx_wait, wait); + mutex_lock(&dev->device_lock); + if (MEI_WRITE_COMPLETE == cl->writing_state) + mask |= (POLLIN | POLLRDNORM); + +out: + mutex_unlock(&dev->device_lock); + return mask; +} + +#ifdef CONFIG_PM +static int mei_pci_suspend(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct mei_device *dev = pci_get_drvdata(pdev); + int err; + + if (!dev) + return -ENODEV; + mutex_lock(&dev->device_lock); + /* Stop watchdog if exists */ + err = mei_wd_stop(dev, true); + /* Set new mei state */ + if (dev->mei_state == MEI_ENABLED || + dev->mei_state == MEI_RECOVERING_FROM_RESET) { + dev->mei_state = MEI_POWER_DOWN; + mei_reset(dev, 0); + } + mutex_unlock(&dev->device_lock); + + free_irq(pdev->irq, dev); + + + return err; +} + +static int mei_pci_resume(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct mei_device *dev; + int err; + + dev = pci_get_drvdata(pdev); + if (!dev) + return -ENODEV; + + /* request and enable interrupt */ + err = request_threaded_irq(pdev->irq, + mei_interrupt_quick_handler, + mei_interrupt_thread_handler, + IRQF_SHARED, mei_driver_name, dev); + if (err) { + printk(KERN_ERR "mei: Request_irq failure. irq = %d\n", + pdev->irq); + return err; + } + + mutex_lock(&dev->device_lock); + dev->mei_state = MEI_POWER_UP; + mei_reset(dev, 1); + mutex_unlock(&dev->device_lock); + + /* Start watchdog if stopped in suspend */ + if (dev->wd_timeout) { + mei_wd_start_setup(dev); + dev->wd_due_counter = 1; + schedule_delayed_work(&dev->wd_work, HZ); + } + return err; +} +static SIMPLE_DEV_PM_OPS(mei_pm_ops, mei_pci_suspend, mei_pci_resume); +#define MEI_PM_OPS (&mei_pm_ops) +#else +#define MIE_PM_OPS NULL +#endif /* CONFIG_PM */ +/* + * PCI driver structure + */ +static struct pci_driver mei_driver = { + .name = mei_driver_name, + .id_table = mei_pci_tbl, + .probe = mei_probe, + .remove = __devexit_p(mei_remove), + .shutdown = __devexit_p(mei_remove), + .driver.pm = MEI_PM_OPS, +}; + +/* + * file operations structure will be used for mei char device. + */ +static const struct file_operations mei_fops = { + .owner = THIS_MODULE, + .read = mei_read, + .unlocked_ioctl = mei_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = mei_compat_ioctl, +#endif + .open = mei_open, + .release = mei_release, + .write = mei_write, + .poll = mei_poll, +}; + +/** + * mei_registration_cdev - sets up the cdev structure for mei device. + * + * @dev: char device struct + * @hminor: minor number for registration char device + * @fops: file operations structure + * + * returns 0 on success, <0 on failure. + */ +static int mei_registration_cdev(struct cdev *dev, int hminor, + const struct file_operations *fops) +{ + int ret, devno = MKDEV(mei_major, hminor); + + cdev_init(dev, fops); + dev->owner = THIS_MODULE; + ret = cdev_add(dev, devno, 1); + /* Fail gracefully if need be */ + if (ret) + printk(KERN_ERR "mei: Error %d registering mei device %d\n", + ret, hminor); + return ret; +} + +/** + * mei_register_cdev - registers mei char device + * + * returns 0 on success, <0 on failure. + */ +static int mei_register_cdev(void) +{ + int ret; + dev_t dev; + + /* registration of char devices */ + ret = alloc_chrdev_region(&dev, MEI_MINORS_BASE, MEI_MINORS_COUNT, + MEI_DRIVER_NAME); + if (ret) { + printk(KERN_ERR "mei: Error allocating char device region.\n"); + return ret; + } + + mei_major = MAJOR(dev); + + ret = mei_registration_cdev(&mei_cdev, MEI_MINOR_NUMBER, + &mei_fops); + if (ret) + unregister_chrdev_region(MKDEV(mei_major, MEI_MINORS_BASE), + MEI_MINORS_COUNT); + + return ret; +} + +/** + * mei_unregister_cdev - unregisters mei char device + */ +static void mei_unregister_cdev(void) +{ + cdev_del(&mei_cdev); + unregister_chrdev_region(MKDEV(mei_major, MEI_MINORS_BASE), + MEI_MINORS_COUNT); +} + +/** + * mei_sysfs_device_create - adds device entry to sysfs + * + * returns 0 on success, <0 on failure. + */ +static int mei_sysfs_device_create(void) +{ + struct class *class; + void *tmphdev; + int err; + + class = class_create(THIS_MODULE, MEI_DRIVER_NAME); + if (IS_ERR(class)) { + err = PTR_ERR(class); + printk(KERN_ERR "mei: Error creating mei class.\n"); + goto err_out; + } + + tmphdev = device_create(class, NULL, mei_cdev.dev, NULL, + MEI_DEV_NAME); + if (IS_ERR(tmphdev)) { + err = PTR_ERR(tmphdev); + goto err_destroy; + } + + mei_class = class; + return 0; + +err_destroy: + class_destroy(class); +err_out: + return err; +} + +/** + * mei_sysfs_device_remove - unregisters the device entry on sysfs + */ +static void mei_sysfs_device_remove(void) +{ + if (IS_ERR_OR_NULL(mei_class)) + return; + + device_destroy(mei_class, mei_cdev.dev); + class_destroy(mei_class); +} + +/** + * mei_init_module - Driver Registration Routine + * + * mei_init_module is the first routine called when the driver is + * loaded. All it does is to register with the PCI subsystem. + * + * returns 0 on success, <0 on failure. + */ +static int __init mei_init_module(void) +{ + int ret; + + pr_debug("mei: %s - version %s\n", + mei_driver_string, mei_driver_version); + /* init pci module */ + ret = pci_register_driver(&mei_driver); + if (ret < 0) { + printk(KERN_ERR "mei: Error registering driver.\n"); + goto end; + } + + ret = mei_register_cdev(); + if (ret) + goto unregister_pci; + + ret = mei_sysfs_device_create(); + if (ret) + goto unregister_cdev; + + return ret; + +unregister_cdev: + mei_unregister_cdev(); +unregister_pci: + pci_unregister_driver(&mei_driver); +end: + return ret; +} + +module_init(mei_init_module); + +/** + * mei_exit_module - Driver Exit Cleanup Routine + * + * mei_exit_module is called just before the driver is removed + * from memory. + */ +static void __exit mei_exit_module(void) +{ + pci_unregister_driver(&mei_driver); + mei_sysfs_device_remove(); + mei_unregister_cdev(); + + pr_debug("mei: Driver unloaded successfully.\n"); +} + +module_exit(mei_exit_module); + + +MODULE_AUTHOR("Intel Corporation"); +MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(MEI_DRIVER_VERSION); diff --git a/drivers/staging/mei/mei_dev.h b/drivers/staging/mei/mei_dev.h new file mode 100644 index 0000000..6f3ec068 --- /dev/null +++ b/drivers/staging/mei/mei_dev.h @@ -0,0 +1,422 @@ +/* + * + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2003-2011, 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. + * + */ + +#ifndef _MEI_DEV_H_ +#define _MEI_DEV_H_ + +#include <linux/types.h> +#include "mei.h" +#include "hw.h" + +/* + * MEI Char Driver Minors + */ +#define MEI_MINORS_BASE 1 +#define MEI_MINORS_COUNT 1 +#define MEI_MINOR_NUMBER 1 + +/* + * watch dog definition + */ +#define MEI_WATCHDOG_DATA_SIZE 16 +#define MEI_START_WD_DATA_SIZE 20 +#define MEI_WD_PARAMS_SIZE 4 +#define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0) + +/* + * AMTHI Client UUID + */ +extern const uuid_le mei_amthi_guid; + +/* + * Watchdog Client UUID + */ +extern const uuid_le mei_wd_guid; + +/* + * Watchdog independence state message + */ +extern const u8 mei_wd_state_independence_msg[3][4]; + +/* + * Number of File descriptors/handles + * that can be opened to the driver. + * + * Limit to 253: 255 Total Clients + * minus internal client for AMTHI + * minus internal client for Watchdog + */ +#define MEI_MAX_OPEN_HANDLE_COUNT 253 + +/* + * Number of queue lists used by this driver + */ +#define MEI_IO_LISTS_NUMBER 7 + +/* + * Number of Maximum MEI Clients + */ +#define MEI_CLIENTS_MAX 255 + +/* File state */ +enum file_state { + MEI_FILE_INITIALIZING = 0, + MEI_FILE_CONNECTING, + MEI_FILE_CONNECTED, + MEI_FILE_DISCONNECTING, + MEI_FILE_DISCONNECTED +}; + +/* MEI device states */ +enum mei_states { + MEI_INITIALIZING = 0, + MEI_INIT_CLIENTS, + MEI_ENABLED, + MEI_RESETING, + MEI_DISABLED, + MEI_RECOVERING_FROM_RESET, + MEI_POWER_DOWN, + MEI_POWER_UP +}; + +/* init clients states*/ +enum mei_init_clients_states { + MEI_START_MESSAGE = 0, + MEI_ENUM_CLIENTS_MESSAGE, + MEI_CLIENT_PROPERTIES_MESSAGE +}; + +enum iamthif_states { + MEI_IAMTHIF_IDLE, + MEI_IAMTHIF_WRITING, + MEI_IAMTHIF_FLOW_CONTROL, + MEI_IAMTHIF_READING, + MEI_IAMTHIF_READ_COMPLETE +}; + +enum mei_file_transaction_states { + MEI_IDLE, + MEI_WRITING, + MEI_WRITE_COMPLETE, + MEI_FLOW_CONTROL, + MEI_READING, + MEI_READ_COMPLETE +}; + +/* MEI CB */ +enum mei_cb_major_types { + MEI_READ = 0, + MEI_WRITE, + MEI_IOCTL, + MEI_OPEN, + MEI_CLOSE +}; + +/* + * Intel MEI message data struct + */ +struct mei_message_data { + u32 size; + char *data; +} __packed; + + +struct mei_cl_cb { + struct list_head cb_list; + enum mei_cb_major_types major_file_operations; + void *file_private; + struct mei_message_data request_buffer; + struct mei_message_data response_buffer; + unsigned long information; + unsigned long read_time; + struct file *file_object; +}; + +/* MEI client instance carried as file->pirvate_data*/ +struct mei_cl { + struct list_head link; + struct mei_device *dev; + enum file_state state; + wait_queue_head_t tx_wait; + wait_queue_head_t rx_wait; + wait_queue_head_t wait; + int read_pending; + int status; + /* ID of client connected */ + u8 host_client_id; + u8 me_client_id; + u8 mei_flow_ctrl_creds; + u8 timer_count; + enum mei_file_transaction_states reading_state; + enum mei_file_transaction_states writing_state; + int sm_state; + struct mei_cl_cb *read_cb; +}; + +struct mei_io_list { + struct mei_cl_cb mei_cb; + int status; + struct mei_device *device_extension; +}; + +/* MEI private device struct */ +struct mei_device { + struct pci_dev *pdev; /* pointer to pci device struct */ + /* + * lists of queues + */ + /* array of pointers to aio lists */ + struct mei_io_list *io_list_array[MEI_IO_LISTS_NUMBER]; + struct mei_io_list read_list; /* driver read queue */ + struct mei_io_list write_list; /* driver write queue */ + struct mei_io_list write_waiting_list; /* write waiting queue */ + struct mei_io_list ctrl_wr_list; /* managed write IOCTL list */ + struct mei_io_list ctrl_rd_list; /* managed read IOCTL list */ + struct mei_io_list amthi_cmd_list; /* amthi list for cmd waiting */ + + /* driver managed amthi list for reading completed amthi cmd data */ + struct mei_io_list amthi_read_complete_list; + /* + * list of files + */ + struct list_head file_list; + /* + * memory of device + */ + unsigned int mem_base; + unsigned int mem_length; + void __iomem *mem_addr; + /* + * lock for the device + */ + struct mutex device_lock; /* device lock */ + int recvd_msg; + struct delayed_work wd_work; /* watch dog deleye work */ + /* + * hw states of host and fw(ME) + */ + u32 host_hw_state; + u32 me_hw_state; + /* + * waiting queue for receive message from FW + */ + wait_queue_head_t wait_recvd_msg; + wait_queue_head_t wait_stop_wd; + + /* + * mei device states + */ + enum mei_states mei_state; + enum mei_init_clients_states init_clients_state; + u16 init_clients_timer; + int stop; + + u32 extra_write_index; + u32 rd_msg_buf[128]; /* used for control messages */ + u32 wr_msg_buf[128]; /* used for control messages */ + u32 ext_msg_buf[8]; /* for control responses */ + u32 rd_msg_hdr; + + struct hbm_version version; + + int mei_host_buffer_is_empty; + struct mei_cl wd_cl; + struct mei_me_client *me_clients; /* Note: memory has to be allocated */ + DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX); + DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); + u8 num_mei_me_clients; + u8 me_client_presentation_num; + u8 me_client_index; + + int wd_pending; + int wd_stopped; + u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */ + unsigned char wd_data[MEI_START_WD_DATA_SIZE]; + + + u16 wd_due_counter; + bool wd_bypass; /* if false, don't refresh watchdog ME client */ + + struct file *iamthif_file_object; + struct mei_cl iamthif_cl; + int iamthif_ioctl; + int iamthif_canceled; + int iamthif_mtu; + unsigned long iamthif_timer; + u32 iamthif_stall_timer; + unsigned char *iamthif_msg_buf; /* Note: memory has to be allocated */ + u32 iamthif_msg_buf_size; + u32 iamthif_msg_buf_index; + int iamthif_flow_control_pending; + enum iamthif_states iamthif_state; + struct mei_cl_cb *iamthif_current_cb; + u8 write_hang; + int need_reset; + long open_handle_count; + +}; + + +/* + * mei init function prototypes + */ +struct mei_device *init_mei_device(struct pci_dev *pdev); +void mei_reset(struct mei_device *dev, int interrupts); +int mei_hw_init(struct mei_device *dev); +int mei_task_initialize_clients(void *data); +int mei_initialize_clients(struct mei_device *dev); +struct mei_cl *mei_alloc_file_private(struct mei_device *dev); +int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl); +void mei_initialize_list(struct mei_io_list *list, + struct mei_device *dev); +void mei_flush_list(struct mei_io_list *list, struct mei_cl *cl); +void mei_flush_queues(struct mei_device *dev, struct mei_cl *cl); +void mei_remove_client_from_file_list(struct mei_device *dev, + u8 host_client_id); +void host_init_iamthif(struct mei_device *dev); +void mei_init_file_private(struct mei_cl *priv, struct mei_device *dev); +void allocate_me_clients_storage(struct mei_device *dev); + +void host_start_message(struct mei_device *dev); +void host_enum_clients_message(struct mei_device *dev); +void host_client_properties(struct mei_device *dev); + +u8 mei_find_me_client_update_filext(struct mei_device *dev, + struct mei_cl *priv, + const uuid_le *cguid, u8 client_id); + +/* + * interrupt functions prototype + */ +irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id); +irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id); +void mei_wd_timer(struct work_struct *work); + +/* + * input output function prototype + */ +int mei_ioctl_connect_client(struct file *file, + struct mei_connect_client_data *data); + +int mei_start_read(struct mei_device *dev, struct mei_cl *cl); + +int amthi_write(struct mei_device *dev, struct mei_cl_cb *priv_cb); + +int amthi_read(struct mei_device *dev, struct file *file, + char __user *ubuf, size_t length, loff_t *offset); + +struct mei_cl_cb *find_amthi_read_list_entry(struct mei_device *dev, + struct file *file); + +void run_next_iamthif_cmd(struct mei_device *dev); + +void mei_free_cb_private(struct mei_cl_cb *priv_cb); + +int mei_find_me_client_index(const struct mei_device *dev, uuid_le cuuid); + +/* + * Register Access Function + */ + +/** + * mei_reg_read - Reads 32bit data from the mei device + * + * @dev: the device structure + * @offset: offset from which to read the data + * + * returns the byte read. + */ +static inline u32 mei_reg_read(struct mei_device *dev, + unsigned long offset) +{ + return ioread32(dev->mem_addr + offset); +} + +/** + * mei_reg_write - Writes 32bit data to the mei device + * + * @dev: the device structure + * @offset: offset from which to write the data + * @value: the byte to write + */ +static inline void mei_reg_write(struct mei_device *dev, + unsigned long offset, u32 value) +{ + iowrite32(value, dev->mem_addr + offset); +} + +/** + * mei_hcsr_read - Reads 32bit data from the host CSR + * + * @dev: the device structure + * + * returns the byte read. + */ +static inline u32 mei_hcsr_read(struct mei_device *dev) +{ + return mei_reg_read(dev, H_CSR); +} + +/** + * mei_mecsr_read - Reads 32bit data from the ME CSR + * + * @dev: the device structure + * + * returns ME_CSR_HA register value (u32) + */ +static inline u32 mei_mecsr_read(struct mei_device *dev) +{ + return mei_reg_read(dev, ME_CSR_HA); +} + +/** + * get_me_cb_rw - Reads 32bit data from the mei ME_CB_RW register + * + * @dev: the device structure + * + * returns ME_CB_RW register value (u32) + */ +static inline u32 mei_mecbrw_read(struct mei_device *dev) +{ + return mei_reg_read(dev, ME_CB_RW); +} + + +/* + * mei interface function prototypes + */ +void mei_hcsr_set(struct mei_device *dev); +void mei_csr_clear_his(struct mei_device *dev); + +void mei_enable_interrupts(struct mei_device *dev); +void mei_disable_interrupts(struct mei_device *dev); + +/** + * mei_fe_same_id - tells if file private data have same id + * + * @fe1: private data of 1. file object + * @fe2: private data of 2. file object + * + * returns !=0 - if ids are the same, 0 - if differ. + */ +static inline int mei_fe_same_id(const struct mei_cl *fe1, + const struct mei_cl *fe2) +{ + return ((fe1->host_client_id == fe2->host_client_id) && + (fe1->me_client_id == fe2->me_client_id)); +} + +#endif diff --git a/drivers/staging/mei/mei_version.h b/drivers/staging/mei/mei_version.h new file mode 100644 index 0000000..075bad8 --- /dev/null +++ b/drivers/staging/mei/mei_version.h @@ -0,0 +1,31 @@ +/* + * + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2003-2011, 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. + * + */ + + +#ifndef MEI_VERSION_H +#define MEI_VERSION_H + +#define MAJOR_VERSION 7 +#define MINOR_VERSION 1 +#define QUICK_FIX_NUMBER 20 +#define VER_BUILD 1 + +#define MEI_DRV_VER1 __stringify(MAJOR_VERSION) "." __stringify(MINOR_VERSION) +#define MEI_DRV_VER2 __stringify(QUICK_FIX_NUMBER) "." __stringify(VER_BUILD) + +#define MEI_DRIVER_VERSION MEI_DRV_VER1 "." MEI_DRV_VER2 + +#endif |
