617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Use is subject to license terms.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Part of Intel(R) Manageability Engine Interface Linux driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Copyright (c) 2003 - 2008 Intel Corp.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * All rights reserved.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Redistribution and use in source and binary forms, with or without
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * modification, are permitted provided that the following conditions
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * are met:
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * 1. Redistributions of source code must retain the above copyright
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * notice, this list of conditions, and the following disclaimer,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * without modification.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * 2. Redistributions in binary form must reproduce at minimum a disclaimer
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * substantially similar to the "NO WARRANTY" disclaimer below
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * ("Disclaimer") and any redistribution must be conditioned upon
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * including a substantially similar Disclaimer requirement for further
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * binary redistribution.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * 3. Neither the names of the above-listed copyright holders nor the names
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * of any contributors may be used to endorse or promote products derived
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * from this software without specific prior written permission.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Alternatively, this software may be distributed under the terms of the
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * GNU General Public License ("GPL") version 2 as published by the Free
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * Software Foundation.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * NO WARRANTY
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * POSSIBILITY OF SUCH DAMAGES.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/types.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/cmn_err.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/conf.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/ddi.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/ddi_impldefs.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/devops.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/instance.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/modctl.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/open.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/stat.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/sunddi.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/sunndi.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/systm.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/mkdev.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include <sys/list.h>
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include "heci_data_structures.h"
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include "heci.h"
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan#include "heci_interface.h"
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganstatic const uint8_t interface_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10};
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganstatic const uint8_t interface_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10};
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * read_heci_register - Read a byte from the heci device
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @device: the device structure
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @offset: offset from which to read the data
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return the byte read.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganuint32_t
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganread_heci_register(struct iamt_heci_device *device,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned long offset)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (ddi_get32(device->io_handle,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (uint32_t *)(long)(device->mem_addr + offset)));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * write_heci_register - Write 4 bytes to the heci device
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @device: the device structure
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @offset: offset from which to write the data
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @value: the byte to write
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganvoid
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganwrite_heci_register(struct iamt_heci_device *device, unsigned long offset,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan uint32_t value)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ddi_put32(device->io_handle,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (uint32_t *)(long)(device->mem_addr + offset), value);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_set_csr_register - write H_CSR register to the heci device
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganvoid
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_set_csr_register(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_heci_register(dev, H_CSR, dev->host_hw_state);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state = read_heci_register(dev, H_CSR);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_csr_enable_interrupts - enable heci device interrupts
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganvoid
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_csr_enable_interrupts(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state |= H_IE;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_set_csr_register(dev);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_csr_disable_interrupts - disable heci device interrupts
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganvoid
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_csr_disable_interrupts(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state &= ~H_IE;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_set_csr_register(dev);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * _host_get_filled_slots - get number of device filled buffer slots
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @device: the device structure
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return numer of filled slots
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganstatic unsigned char
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan_host_get_filled_slots(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan char read_ptr, write_ptr;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan read_ptr = (char)((dev->host_hw_state & H_CBRP) >> 8);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_ptr = (char)((dev->host_hw_state & H_CBWP) >> 16);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return ((unsigned char)(write_ptr - read_ptr));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * host_buffer_is_empty - check if host buffer is empty.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if empty, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganhost_buffer_is_empty(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char filled_slots;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state = read_heci_register(dev, H_CSR);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan filled_slots = _host_get_filled_slots(dev);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (filled_slots > 0)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * count_empty_write_slots - count write empty slots.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return -1(ESLOTS_OVERFLOW) if overflow, otherwise empty slots count
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint32_t
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logancount_empty_write_slots(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char buffer_depth, filled_slots, empty_slots;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan buffer_depth = (unsigned char)((dev->host_hw_state & H_CBD) >> 24);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan filled_slots = _host_get_filled_slots(dev);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan empty_slots = buffer_depth - filled_slots;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (filled_slots > buffer_depth) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan /* overflow */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (-ESLOTS_OVERFLOW);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return ((int32_t)empty_slots);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_write_message - write a message to heci device.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @heci_hdr: header of message
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @write_buffer: message buffer will be write
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @write_length: message size will be write
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if success, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_write_message(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_msg_hdr *header,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char *write_buffer,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned long write_length)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan uint32_t temp_msg = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned long bytes_written = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char buffer_depth, filled_slots, empty_slots;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned long dw_to_write;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state = read_heci_register(dev, H_CSR);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan DBG("host_hw_state = 0x%08x.\n", dev->host_hw_state);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan DBG("heci_write_message header=%08x.\n", *((uint32_t *)(void *)header));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan buffer_depth = (unsigned char)((dev->host_hw_state & H_CBD) >> 24);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan filled_slots = _host_get_filled_slots(dev);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan empty_slots = buffer_depth - filled_slots;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan DBG("filled = %u, empty = %u.\n", filled_slots, empty_slots);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dw_to_write = ((write_length + 3) / 4);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (dw_to_write > empty_slots)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_heci_register(dev, H_CB_WW, *((uint32_t *)(void *)header));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan while (write_length >= 4) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_heci_register(dev, H_CB_WW,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *(uint32_t *)(void *)(write_buffer + bytes_written));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan bytes_written += 4;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_length -= 4;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (write_length > 0) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (void) memcpy(&temp_msg, &write_buffer[bytes_written],
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_length);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_heci_register(dev, H_CB_WW, temp_msg);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state |= H_IG;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_heci_register(dev, H_CSR, dev->host_hw_state);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->me_hw_state = read_heci_register(dev, ME_CSR_HA);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if ((dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->write_hang = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * count_full_read_slots - count read full slots.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return -1(ESLOTS_OVERFLOW) if overflow, otherwise filled slots count
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint32_t
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logancount_full_read_slots(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan char read_ptr, write_ptr;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char buffer_depth, filled_slots;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->me_hw_state = read_heci_register(dev, ME_CSR_HA);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan buffer_depth = (unsigned char)((dev->me_hw_state & ME_CBD_HRA) >> 24);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan read_ptr = (char)((dev->me_hw_state & ME_CBRP_HRA) >> 8);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan write_ptr = (char)((dev->me_hw_state & ME_CBWP_HRA) >> 16);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan filled_slots = (unsigned char)(write_ptr - read_ptr);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (filled_slots > buffer_depth) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan /* overflow */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (-ESLOTS_OVERFLOW);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan DBG("filled_slots =%08x \n", filled_slots);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return ((int32_t)filled_slots);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_read_slots - read a message from heci device.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @buffer: message buffer will be write
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @buffer_length: message size will be read
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganvoid
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_read_slots(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char *buffer, unsigned long buffer_length)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan uint32_t i = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan unsigned char temp_buf[sizeof (uint32_t)];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan while (buffer_length >= sizeof (uint32_t)) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ((uint32_t *)(void *)buffer)[i] =
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan read_heci_register(dev, ME_CB_RW);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan DBG("buffer[%d]= %d\n", i, ((uint32_t *)(void *)buffer)[i]);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan i++;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan buffer_length -= sizeof (uint32_t);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (buffer_length > 0) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *((uint32_t *)(void *)&temp_buf) =
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan read_heci_register(dev, ME_CB_RW);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (void) memcpy(&buffer[i * 4], temp_buf, buffer_length);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->host_hw_state |= H_IG;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_set_csr_register(dev);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * flow_ctrl_creds - check flow_control credentials.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @file_ext: private data of the file object
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if flow_ctrl_creds >0, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganflow_ctrl_creds(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_ext)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan uint8_t i;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!dev->num_heci_me_clients)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (file_ext == NULL)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (file_ext->flow_ctrl_creds > 0)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan for (i = 0; i < dev->num_heci_me_clients; i++) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (dev->me_clients[i].client_id == file_ext->me_client_id) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (dev->me_clients[i].flow_ctrl_creds > 0) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ASSERT(dev->me_clients[i].props.single_recv_buf
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan != 0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ASSERT(0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * flow_ctrl_reduce - reduce flow_control.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @file_ext: private data of the file object
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganvoid
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganflow_ctrl_reduce(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_ext)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan uint8_t i;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!dev->num_heci_me_clients)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan for (i = 0; i < dev->num_heci_me_clients; i++) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (dev->me_clients[i].client_id == file_ext->me_client_id) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (dev->me_clients[i].props.single_recv_buf != 0) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ASSERT(dev->me_clients[i].flow_ctrl_creds > 0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan dev->me_clients[i].flow_ctrl_creds--;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan } else {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ASSERT(file_ext->flow_ctrl_creds > 0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan file_ext->flow_ctrl_creds--;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ASSERT(0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_send_flow_control - send flow control to fw.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @file_ext: private data of the file object
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if success, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_send_flow_control(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_ext)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_msg_hdr *heci_hdr;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct hbm_flow_control *heci_flow_control;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr = (struct heci_msg_hdr *)&dev->wr_msg_buf[0];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->host_addr = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->me_addr = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->length = sizeof (struct hbm_flow_control);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->msg_complete = 1;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->reserved = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_flow_control = (struct hbm_flow_control *)&dev->wr_msg_buf[1];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (void) memset(heci_flow_control, 0, sizeof (heci_flow_control));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_flow_control->host_addr = file_ext->host_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_flow_control->me_addr = file_ext->me_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_flow_control->cmd.cmd = HECI_FLOW_CONTROL_CMD;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (void) memset(heci_flow_control->reserved, 0,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan sizeof (heci_flow_control->reserved));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan DBG("sending flow control host client = %d, me client = %d\n",
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan file_ext->host_client_id, file_ext->me_client_id);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!heci_write_message(dev, heci_hdr,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (unsigned char *)heci_flow_control,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan sizeof (struct hbm_flow_control)))
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * other_client_is_connecting - check if other
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * client with the same client id is connected.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @file_ext: private data of the file object
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if other client is connected, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganother_client_is_connecting(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_ext)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_pos = NULL;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_next = NULL;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if ((file_pos->state == HECI_FILE_CONNECTING) &&
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (file_pos != file_ext) &&
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan file_ext->me_client_id == file_pos->me_client_id)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_send_wd - send watch dog message to fw.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if success, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_send_wd(struct iamt_heci_device *dev)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_msg_hdr *heci_hdr;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr = (struct heci_msg_hdr *)&dev->wr_msg_buf[0];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->host_addr = dev->wd_file_ext.host_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->me_addr = dev->wd_file_ext.me_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->msg_complete = 1;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->reserved = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!memcmp(dev->wd_data, interface_start_wd_params,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan HECI_WD_PARAMS_SIZE)) {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->length = HECI_START_WD_DATA_SIZE;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan } else {
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan ASSERT(!memcmp(dev->wd_data, interface_stop_wd_params,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan HECI_WD_PARAMS_SIZE));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->length = HECI_WD_PARAMS_SIZE;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan }
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!heci_write_message(dev, heci_hdr, dev->wd_data, heci_hdr->length))
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_disconnect - send disconnect message to fw.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @file_ext: private data of the file object
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if success, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_disconnect(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_ext)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_msg_hdr *heci_hdr;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct hbm_client_disconnect_request *heci_cli_disconnect;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr = (struct heci_msg_hdr *)&dev->wr_msg_buf[0];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->host_addr = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->me_addr = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->length = sizeof (struct hbm_client_disconnect_request);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->msg_complete = 1;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->reserved = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_disconnect =
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (struct hbm_client_disconnect_request *)&dev->wr_msg_buf[1];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (void) memset(heci_cli_disconnect, 0, sizeof (heci_cli_disconnect));
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_disconnect->host_addr = file_ext->host_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_disconnect->me_addr = file_ext->me_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_disconnect->cmd.cmd = CLIENT_DISCONNECT_REQ_CMD;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_disconnect->reserved[0] = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!heci_write_message(dev, heci_hdr,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (unsigned char *)heci_cli_disconnect,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan sizeof (struct hbm_client_disconnect_request)))
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan/*
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * heci_connect - send connect message to fw.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @dev: device object for our driver
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @file_ext: private data of the file object
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan *
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan * @return 1 if success, 0 - otherwise.
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan */
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganint
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Loganheci_connect(struct iamt_heci_device *dev,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_file_private *file_ext)
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan{
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct heci_msg_hdr *heci_hdr;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan struct hbm_client_connect_request *heci_cli_connect;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr = (struct heci_msg_hdr *)&dev->wr_msg_buf[0];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->host_addr = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->me_addr = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->length = sizeof (struct hbm_client_connect_request);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->msg_complete = 1;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_hdr->reserved = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_connect =
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (struct hbm_client_connect_request *)&dev->wr_msg_buf[1];
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_connect->host_addr = file_ext->host_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_connect->me_addr = file_ext->me_client_id;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_connect->cmd.cmd = CLIENT_CONNECT_REQ_CMD;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan heci_cli_connect->reserved = 0;
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan if (!heci_write_message(dev, heci_hdr,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan (unsigned char *)heci_cli_connect,
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan sizeof (struct hbm_client_connect_request)))
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (0);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan return (1);
617e2443dfc17fe44fd44c0675d6aad2ffc9df42Mark Logan}