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path: root/drivers/misc/mei/amthif.c
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-rw-r--r--drivers/misc/mei/amthif.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
deleted file mode 100644
index 0e7406ccb6dd..000000000000
--- a/drivers/misc/mei/amthif.c
+++ /dev/null
@@ -1,340 +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/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/slab.h>
-
-#include <linux/mei.h>
-
-#include "mei_dev.h"
-#include "hbm.h"
-#include "client.h"
-
-const uuid_le mei_amthif_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d,
- 0xac, 0xa8, 0x46, 0xe0,
- 0xff, 0x65, 0x81, 0x4c);
-
-/**
- * mei_amthif_reset_params - initializes mei device iamthif
- *
- * @dev: the device structure
- */
-void mei_amthif_reset_params(struct mei_device *dev)
-{
- /* reset iamthif parameters. */
- dev->iamthif_canceled = false;
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- dev->iamthif_stall_timer = 0;
- dev->iamthif_open_count = 0;
-}
-
-/**
- * mei_amthif_host_init - mei initialization amthif client.
- *
- * @dev: the device structure
- * @me_cl: me client
- *
- * Return: 0 on success, <0 on failure.
- */
-int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl)
-{
- struct mei_cl *cl = &dev->iamthif_cl;
- int ret;
-
- mutex_lock(&dev->device_lock);
-
- if (mei_cl_is_connected(cl)) {
- ret = 0;
- goto out;
- }
-
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
-
- mei_cl_init(cl, dev);
-
- ret = mei_cl_link(cl);
- if (ret < 0) {
- dev_err(dev->dev, "amthif: failed cl_link %d\n", ret);
- goto out;
- }
-
- ret = mei_cl_connect(cl, me_cl, NULL);
-
-out:
- mutex_unlock(&dev->device_lock);
- return ret;
-}
-
-/**
- * mei_amthif_read_start - queue message for sending read credential
- *
- * @cl: host client
- * @fp: file pointer of message recipient
- *
- * Return: 0 on success, <0 on failure.
- */
-static int mei_amthif_read_start(struct mei_cl *cl, const struct file *fp)
-{
- struct mei_device *dev = cl->dev;
- struct mei_cl_cb *cb;
-
- cb = mei_cl_enqueue_ctrl_wr_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, fp);
- if (!cb)
- return -ENOMEM;
-
- cl->rx_flow_ctrl_creds++;
-
- dev->iamthif_state = MEI_IAMTHIF_READING;
- cl->fp = cb->fp;
-
- return 0;
-}
-
-/**
- * mei_amthif_run_next_cmd - send next amt command from queue
- *
- * @dev: the device structure
- *
- * Return: 0 on success, <0 on failure.
- */
-int mei_amthif_run_next_cmd(struct mei_device *dev)
-{
- struct mei_cl *cl = &dev->iamthif_cl;
- struct mei_cl_cb *cb;
- int ret;
-
- dev->iamthif_canceled = false;
-
- dev_dbg(dev->dev, "complete amthif cmd_list cb.\n");
-
- cb = list_first_entry_or_null(&dev->amthif_cmd_list, typeof(*cb), list);
- if (!cb) {
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- cl->fp = NULL;
- return 0;
- }
-
- list_del_init(&cb->list);
- dev->iamthif_state = MEI_IAMTHIF_WRITING;
- cl->fp = cb->fp;
-
- ret = mei_cl_write(cl, cb);
- if (ret < 0)
- return ret;
-
- if (cb->completed)
- cb->status = mei_amthif_read_start(cl, cb->fp);
-
- return 0;
-}
-
-/**
- * mei_amthif_write - write amthif data to amthif client
- *
- * @cl: host client
- * @cb: mei call back struct
- *
- * Return: 0 on success, <0 on failure.
- */
-int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb)
-{
-
- struct mei_device *dev = cl->dev;
-
- list_add_tail(&cb->list, &dev->amthif_cmd_list);
-
- /*
- * The previous request is still in processing, queue this one.
- */
- if (dev->iamthif_state != MEI_IAMTHIF_IDLE)
- return 0;
-
- return mei_amthif_run_next_cmd(dev);
-}
-
-/**
- * mei_amthif_poll - the amthif poll function
- *
- * @file: pointer to file structure
- * @wait: pointer to poll_table structure
- *
- * Return: poll mask
- *
- * Locking: called under "dev->device_lock" lock
- */
-unsigned int mei_amthif_poll(struct file *file, poll_table *wait)
-{
- struct mei_cl *cl = file->private_data;
- struct mei_cl_cb *cb = mei_cl_read_cb(cl, file);
- unsigned int mask = 0;
-
- poll_wait(file, &cl->rx_wait, wait);
- if (cb)
- mask |= POLLIN | POLLRDNORM;
-
- return mask;
-}
-
-/**
- * mei_amthif_irq_write - write iamthif command in irq thread context.
- *
- * @cl: private data of the file object.
- * @cb: callback block.
- * @cmpl_list: complete list.
- *
- * Return: 0, OK; otherwise, error.
- */
-int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
- struct list_head *cmpl_list)
-{
- int ret;
-
- ret = mei_cl_irq_write(cl, cb, cmpl_list);
- if (ret)
- return ret;
-
- if (cb->completed)
- cb->status = mei_amthif_read_start(cl, cb->fp);
-
- return 0;
-}
-
-/**
- * mei_amthif_irq_read_msg - read routine after ISR to
- * handle the read amthif message
- *
- * @cl: mei client
- * @mei_hdr: header of amthif message
- * @cmpl_list: completed callbacks list
- *
- * Return: -ENODEV if cb is NULL 0 otherwise; error message is in cb->status
- */
-int mei_amthif_irq_read_msg(struct mei_cl *cl,
- struct mei_msg_hdr *mei_hdr,
- struct list_head *cmpl_list)
-{
- struct mei_device *dev;
- int ret;
-
- dev = cl->dev;
-
- if (dev->iamthif_state != MEI_IAMTHIF_READING) {
- mei_irq_discard_msg(dev, mei_hdr);
- return 0;
- }
-
- ret = mei_cl_irq_read_msg(cl, mei_hdr, cmpl_list);
- if (ret)
- return ret;
-
- if (!mei_hdr->msg_complete)
- return 0;
-
- dev_dbg(dev->dev, "completed amthif read.\n ");
- dev->iamthif_stall_timer = 0;
-
- return 0;
-}
-
-/**
- * mei_amthif_complete - complete amthif callback.
- *
- * @cl: host client
- * @cb: callback block.
- */
-void mei_amthif_complete(struct mei_cl *cl, struct mei_cl_cb *cb)
-{
- struct mei_device *dev = cl->dev;
-
- dev_dbg(dev->dev, "completing amthif call back.\n");
- switch (cb->fop_type) {
- case MEI_FOP_WRITE:
- if (!cb->status) {
- dev->iamthif_stall_timer = MEI_IAMTHIF_STALL_TIMER;
- mei_schedule_stall_timer(dev);
- mei_io_cb_free(cb);
- return;
- }
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- cl->fp = NULL;
- if (!dev->iamthif_canceled) {
- /*
- * in case of error enqueue the write cb to complete
- * read list so it can be propagated to the reader
- */
- list_add_tail(&cb->list, &cl->rd_completed);
- wake_up_interruptible(&cl->rx_wait);
- } else {
- mei_io_cb_free(cb);
- }
- break;
- case MEI_FOP_READ:
- if (!dev->iamthif_canceled) {
- list_add_tail(&cb->list, &cl->rd_completed);
- dev_dbg(dev->dev, "amthif read completed\n");
- wake_up_interruptible(&cl->rx_wait);
- } else {
- mei_io_cb_free(cb);
- }
-
- dev->iamthif_stall_timer = 0;
- mei_amthif_run_next_cmd(dev);
- break;
- default:
- WARN_ON(1);
- }
-}
-
-/**
-* mei_amthif_release - the release function
-*
-* @dev: device structure
-* @fp: pointer to file structure
-*
-* Return: 0 on success, <0 on error
-*/
-int mei_amthif_release(struct mei_device *dev, struct file *fp)
-{
- struct mei_cl *cl = fp->private_data;
-
- if (dev->iamthif_open_count > 0)
- dev->iamthif_open_count--;
-
- if (cl->fp == fp && dev->iamthif_state != MEI_IAMTHIF_IDLE) {
-
- dev_dbg(dev->dev, "amthif canceled iamthif state %d\n",
- dev->iamthif_state);
- dev->iamthif_canceled = true;
- }
-
- /* Don't clean ctrl_rd_list here, the reads has to be completed */
- mei_io_list_free_fp(&dev->amthif_cmd_list, fp);
- mei_io_list_free_fp(&cl->rd_completed, fp);
-
- return 0;
-}

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