Staging: remove heci driver

Intel has officially abandoned this project and does not want to
maintian it or have it included in the main kernel tree, as no one
should use the code, it's not needed anymore.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 498 deletions

diff --git a/drivers/staging/heci/heci_interface.c b/drivers/staging/heci/heci_interface.c
deleted file mode 100644
index 03e1df1a88a..00000000000
--- a/drivers/staging/heci/heci_interface.c
+++ /dev/null
@@ -1,498 +0,0 @@
-/*
- * Part of Intel(R) Manageability Engine Interface Linux driver
- *
- * Copyright (c) 2003 - 2008 Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- *
- */
-
-
-#include "heci.h"
-#include "heci_interface.h"
-
-
-/**
- * heci_set_csr_register - write H_CSR register to the heci device,
- * and ignore the H_IS bit for it is write-one-to-zero.
- *
- * @dev: device object for our driver
- */
-void heci_set_csr_register(struct iamt_heci_device *dev)
-{
-	if ((dev->host_hw_state & H_IS) == H_IS)
-		dev->host_hw_state &= ~H_IS;
-	write_heci_register(dev, H_CSR, dev->host_hw_state);
-	dev->host_hw_state = read_heci_register(dev, H_CSR);
-}
-
-/**
- * heci_csr_enable_interrupts - enable heci device interrupts
- *
- * @dev: device object for our driver
- */
-void heci_csr_enable_interrupts(struct iamt_heci_device *dev)
-{
-	dev->host_hw_state |= H_IE;
-	heci_set_csr_register(dev);
-}
-
-/**
- * heci_csr_disable_interrupts - disable heci device interrupts
- *
- * @dev: device object for our driver
- */
-void heci_csr_disable_interrupts(struct iamt_heci_device *dev)
-{
-	dev->host_hw_state &= ~H_IE;
-	heci_set_csr_register(dev);
-}
-
-/**
- * heci_csr_clear_his - clear H_IS bit in H_CSR
- *
- * @dev: device object for our driver
- */
-void heci_csr_clear_his(struct iamt_heci_device *dev)
-{
-	write_heci_register(dev, H_CSR, dev->host_hw_state);
-	dev->host_hw_state = read_heci_register(dev, H_CSR);
-}
-
-/**
- * _host_get_filled_slots - get number of device filled buffer slots
- *
- * @device: the device structure
- *
- * returns numer of filled slots
- */
-static unsigned char _host_get_filled_slots(const struct iamt_heci_device *dev)
-{
-	char read_ptr, write_ptr;
-
-	read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8);
-	write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16);
-
-	return (unsigned char) (write_ptr - read_ptr);
-}
-
-/**
- * host_buffer_is_empty  - check if host buffer is empty.
- *
- * @dev: device object for our driver
- *
- * returns  1 if empty, 0 - otherwise.
- */
-int host_buffer_is_empty(struct iamt_heci_device *dev)
-{
-	unsigned char filled_slots;
-
-	dev->host_hw_state = read_heci_register(dev, H_CSR);
-	filled_slots = _host_get_filled_slots(dev);
-
-	if (filled_slots > 0)
-		return 0;
-
-	return 1;
-}
-
-/**
- * count_empty_write_slots  - count write empty slots.
- *
- * @dev: device object for our driver
- *
- * returns -1(ESLOTS_OVERFLOW) if overflow, otherwise empty slots count
- */
-__s32 count_empty_write_slots(const struct iamt_heci_device *dev)
-{
-	unsigned char buffer_depth, filled_slots, empty_slots;
-
-	buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24);
-	filled_slots = _host_get_filled_slots(dev);
-	empty_slots = buffer_depth - filled_slots;
-
-	if (filled_slots > buffer_depth) {
-		/* overflow */
-		return -ESLOTS_OVERFLOW;
-	}
-
-	return (__s32) empty_slots;
-}
-
-/**
- * heci_write_message  - write a message to heci device.
- *
- * @dev: device object for our driver
- * @heci_hdr: header of  message
- * @write_buffer: message buffer will be write
- * @write_length: message size will be write
- *
- * returns 1 if success, 0 - otherwise.
- */
-int heci_write_message(struct iamt_heci_device *dev,
-			     struct heci_msg_hdr *header,
-			     unsigned char *write_buffer,
-			     unsigned long write_length)
-{
-	__u32 temp_msg = 0;
-	unsigned long bytes_written = 0;
-	unsigned char buffer_depth, filled_slots, empty_slots;
-	unsigned long dw_to_write;
-
-	dev->host_hw_state = read_heci_register(dev, H_CSR);
-	DBG("host_hw_state = 0x%08x.\n", dev->host_hw_state);
-	DBG("heci_write_message header=%08x.\n", *((__u32 *) header));
-	buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24);
-	filled_slots = _host_get_filled_slots(dev);
-	empty_slots = buffer_depth - filled_slots;
-	DBG("filled = %hu, empty = %hu.\n", filled_slots, empty_slots);
-
-	dw_to_write = ((write_length + 3) / 4);
-
-	if (dw_to_write > empty_slots)
-		return 0;
-
-	write_heci_register(dev, H_CB_WW, *((__u32 *) header));
-
-	while (write_length >= 4) {
-		write_heci_register(dev, H_CB_WW,
-				*(__u32 *) (write_buffer + bytes_written));
-		bytes_written += 4;
-		write_length -= 4;
-	}
-
-	if (write_length > 0) {
-		memcpy(&temp_msg, &write_buffer[bytes_written], write_length);
-		write_heci_register(dev, H_CB_WW, temp_msg);
-	}
-
-	dev->host_hw_state |= H_IG;
-	heci_set_csr_register(dev);
-	dev->me_hw_state = read_heci_register(dev, ME_CSR_HA);
-	if ((dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA)
-		return 0;
-
-	dev->write_hang = 0;
-	return 1;
-}
-
-/**
- * count_full_read_slots  - count read full slots.
- *
- * @dev: device object for our driver
- *
- * returns -1(ESLOTS_OVERFLOW) if overflow, otherwise filled slots count
- */
-__s32 count_full_read_slots(struct iamt_heci_device *dev)
-{
-	char read_ptr, write_ptr;
-	unsigned char buffer_depth, filled_slots;
-
-	dev->me_hw_state = read_heci_register(dev, ME_CSR_HA);
-	buffer_depth = (unsigned char)((dev->me_hw_state & ME_CBD_HRA) >> 24);
-	read_ptr = (char) ((dev->me_hw_state & ME_CBRP_HRA) >> 8);
-	write_ptr = (char) ((dev->me_hw_state & ME_CBWP_HRA) >> 16);
-	filled_slots = (unsigned char) (write_ptr - read_ptr);
-
-	if (filled_slots > buffer_depth) {
-		/* overflow */
-		return -ESLOTS_OVERFLOW;
-	}
-
-	DBG("filled_slots =%08x  \n", filled_slots);
-	return (__s32) filled_slots;
-}
-
-/**
- * heci_read_slots  - read a message from heci device.
- *
- * @dev: device object for our driver
- * @buffer: message buffer will be write
- * @buffer_length: message size will be read
- */
-void heci_read_slots(struct iamt_heci_device *dev,
-		     unsigned char *buffer, unsigned long buffer_length)
-{
-	__u32 i = 0;
-	unsigned char temp_buf[sizeof(__u32)];
-
-	while (buffer_length >= sizeof(__u32)) {
-		((__u32 *) buffer)[i] = read_heci_register(dev, ME_CB_RW);
-		DBG("buffer[%d]= %d\n", i, ((__u32 *) buffer)[i]);
-		i++;
-		buffer_length -= sizeof(__u32);
-	}
-
-	if (buffer_length > 0) {
-		*((__u32 *) &temp_buf) = read_heci_register(dev, ME_CB_RW);
-		memcpy(&buffer[i * 4], temp_buf, buffer_length);
-	}
-
-	dev->host_hw_state |= H_IG;
-	heci_set_csr_register(dev);
-}
-
-/**
- * flow_ctrl_creds  - check flow_control credentials.
- *
- * @dev: device object for our driver
- * @file_ext: private data of the file object
- *
- * returns 1 if flow_ctrl_creds >0, 0 - otherwise.
- */
-int flow_ctrl_creds(struct iamt_heci_device *dev,
-				   struct heci_file_private *file_ext)
-{
-	__u8 i;
-
-	if (!dev->num_heci_me_clients)
-		return 0;
-
-	if (file_ext == NULL)
-		return 0;
-
-	if (file_ext->flow_ctrl_creds > 0)
-		return 1;
-
-	for (i = 0; i < dev->num_heci_me_clients; i++) {
-		if (dev->me_clients[i].client_id == file_ext->me_client_id) {
-			if (dev->me_clients[i].flow_ctrl_creds > 0) {
-				BUG_ON(dev->me_clients[i].props.single_recv_buf
-					 == 0);
-				return 1;
-			}
-			return 0;
-		}
-	}
-	BUG();
-	return 0;
-}
-
-/**
- * flow_ctrl_reduce  - reduce flow_control.
- *
- * @dev: device object for our driver
- * @file_ext: private data of the file object
- */
-void flow_ctrl_reduce(struct iamt_heci_device *dev,
-			 struct heci_file_private *file_ext)
-{
-	__u8 i;
-
-	if (!dev->num_heci_me_clients)
-		return;
-
-	for (i = 0; i < dev->num_heci_me_clients; i++) {
-		if (dev->me_clients[i].client_id == file_ext->me_client_id) {
-			if (dev->me_clients[i].props.single_recv_buf != 0) {
-				BUG_ON(dev->me_clients[i].flow_ctrl_creds <= 0);
-				dev->me_clients[i].flow_ctrl_creds--;
-			} else {
-				BUG_ON(file_ext->flow_ctrl_creds <= 0);
-				file_ext->flow_ctrl_creds--;
-			}
-			return;
-		}
-	}
-	BUG();
-}
-
-/**
- * heci_send_flow_control - send flow control to fw.
- *
- * @dev: device object for our driver
- * @file_ext: private data of the file object
- *
- * returns 1 if success, 0 - otherwise.
- */
-int heci_send_flow_control(struct iamt_heci_device *dev,
-				 struct heci_file_private *file_ext)
-{
-	struct heci_msg_hdr *heci_hdr;
-	struct hbm_flow_control *heci_flow_control;
-
-	heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0];
-	heci_hdr->host_addr = 0;
-	heci_hdr->me_addr = 0;
-	heci_hdr->length = sizeof(struct hbm_flow_control);
-	heci_hdr->msg_complete = 1;
-	heci_hdr->reserved = 0;
-
-	heci_flow_control = (struct hbm_flow_control *) &dev->wr_msg_buf[1];
-	memset(heci_flow_control, 0, sizeof(heci_flow_control));
-	heci_flow_control->host_addr = file_ext->host_client_id;
-	heci_flow_control->me_addr = file_ext->me_client_id;
-	heci_flow_control->cmd.cmd = HECI_FLOW_CONTROL_CMD;
-	memset(heci_flow_control->reserved, 0,
-			sizeof(heci_flow_control->reserved));
-	DBG("sending flow control host client = %d, me client = %d\n",
-	    file_ext->host_client_id, file_ext->me_client_id);
-	if (!heci_write_message(dev, heci_hdr,
-				(unsigned char *) heci_flow_control,
-				sizeof(struct hbm_flow_control)))
-		return 0;
-
-	return 1;
-
-}
-
-/**
- * other_client_is_connecting  - check if other
- *    client with the same client id is connected.
- *
- * @dev: device object for our driver
- * @file_ext: private data of the file object
- *
- * returns 1 if other client is connected, 0 - otherwise.
- */
-int other_client_is_connecting(struct iamt_heci_device *dev,
-		struct heci_file_private *file_ext)
-{
-	struct heci_file_private *file_pos = NULL;
-	struct heci_file_private *file_next = NULL;
-
-	list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) {
-		if ((file_pos->state == HECI_FILE_CONNECTING)
-			&& (file_pos != file_ext)
-			&& file_ext->me_client_id == file_pos->me_client_id)
-			return 1;
-
-	}
-	return 0;
-}
-
-/**
- * heci_send_wd  - send watch dog message to fw.
- *
- * @dev: device object for our driver
- *
- * returns 1 if success, 0 - otherwise.
- */
-int heci_send_wd(struct iamt_heci_device *dev)
-{
-	struct heci_msg_hdr *heci_hdr;
-
-	heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0];
-	heci_hdr->host_addr = dev->wd_file_ext.host_client_id;
-	heci_hdr->me_addr = dev->wd_file_ext.me_client_id;
-	heci_hdr->msg_complete = 1;
-	heci_hdr->reserved = 0;
-
-	if (!memcmp(dev->wd_data, heci_start_wd_params,
-			HECI_WD_PARAMS_SIZE)) {
-		heci_hdr->length = HECI_START_WD_DATA_SIZE;
-	} else {
-		BUG_ON(memcmp(dev->wd_data, heci_stop_wd_params,
-			HECI_WD_PARAMS_SIZE));
-		heci_hdr->length = HECI_WD_PARAMS_SIZE;
-	}
-
-	if (!heci_write_message(dev, heci_hdr, dev->wd_data, heci_hdr->length))
-		return 0;
-
-	return 1;
-}
-
-/**
- * heci_disconnect  - send disconnect message to fw.
- *
- * @dev: device object for our driver
- * @file_ext: private data of the file object
- *
- * returns 1 if success, 0 - otherwise.
- */
-int heci_disconnect(struct iamt_heci_device *dev,
-			  struct heci_file_private *file_ext)
-{
-	struct heci_msg_hdr *heci_hdr;
-	struct hbm_client_disconnect_request *heci_cli_disconnect;
-
-	heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0];
-	heci_hdr->host_addr = 0;
-	heci_hdr->me_addr = 0;
-	heci_hdr->length = sizeof(struct hbm_client_disconnect_request);
-	heci_hdr->msg_complete = 1;
-	heci_hdr->reserved = 0;
-
-	heci_cli_disconnect =
-	    (struct hbm_client_disconnect_request *) &dev->wr_msg_buf[1];
-	memset(heci_cli_disconnect, 0, sizeof(heci_cli_disconnect));
-	heci_cli_disconnect->host_addr = file_ext->host_client_id;
-	heci_cli_disconnect->me_addr = file_ext->me_client_id;
-	heci_cli_disconnect->cmd.cmd = CLIENT_DISCONNECT_REQ_CMD;
-	heci_cli_disconnect->reserved[0] = 0;
-
-	if (!heci_write_message(dev, heci_hdr,
-				(unsigned char *) heci_cli_disconnect,
-				sizeof(struct hbm_client_disconnect_request)))
-		return 0;
-
-	return 1;
-}
-
-/**
- * heci_connect - send connect message to fw.
- *
- * @dev: device object for our driver
- * @file_ext: private data of the file object
- *
- * returns 1 if success, 0 - otherwise.
- */
-int heci_connect(struct iamt_heci_device *dev,
-		       struct heci_file_private *file_ext)
-{
-	struct heci_msg_hdr *heci_hdr;
-	struct hbm_client_connect_request *heci_cli_connect;
-
-	heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0];
-	heci_hdr->host_addr = 0;
-	heci_hdr->me_addr = 0;
-	heci_hdr->length = sizeof(struct hbm_client_connect_request);
-	heci_hdr->msg_complete = 1;
-	heci_hdr->reserved = 0;
-
-	heci_cli_connect =
-	    (struct hbm_client_connect_request *) &dev->wr_msg_buf[1];
-	heci_cli_connect->host_addr = file_ext->host_client_id;
-	heci_cli_connect->me_addr = file_ext->me_client_id;
-	heci_cli_connect->cmd.cmd = CLIENT_CONNECT_REQ_CMD;
-	heci_cli_connect->reserved = 0;
-
-	if (!heci_write_message(dev, heci_hdr,
-				(unsigned char *) heci_cli_connect,
-				sizeof(struct hbm_client_connect_request)))
-		return 0;
-
-	return 1;
-}