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   1 /*
   2  * Part of Intel(R) Manageability Engine Interface Linux driver
   3  *
   4  * Copyright (c) 2003 - 2008 Intel Corp.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification.
  13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  14  *    substantially similar to the "NO WARRANTY" disclaimer below
  15  *    ("Disclaimer") and any redistribution must be conditioned upon
  16  *    including a substantially similar Disclaimer requirement for further
  17  *    binary redistribution.
  18  * 3. Neither the names of the above-listed copyright holders nor the names
  19  *    of any contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * Alternatively, this software may be distributed under the terms of the
  23  * GNU General Public License ("GPL") version 2 as published by the Free
  24  * Software Foundation.
  25  *
  26  * NO WARRANTY
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGES.
  38  *
  39  */
  40
  41
  42 #ifndef _HECI_INTERFACE_H_
  43 #define _HECI_INTERFACE_H_
  44
  45 #include <linux/spinlock.h>
  46 #include <linux/list.h>
  47 #include <linux/pci.h>
  48 #include <linux/timer.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/workqueue.h>
  51 #include <linux/module.h>
  52 #include <linux/aio.h>
  53 #include <linux/types.h>
  54 #include "heci_data_structures.h"
  55
  56
  57 #define HBM_MINOR_VERSION                   0
  58 #define HBM_MAJOR_VERSION                   1
  59 #define HBM_TIMEOUT                         1   /* 1 second */
  60
  61
  62 #define HOST_START_REQ_CMD                  0x01
  63 #define HOST_START_RES_CMD                  0x81
  64
  65 #define HOST_STOP_REQ_CMD                   0x02
  66 #define HOST_STOP_RES_CMD                   0x82
  67
  68 #define ME_STOP_REQ_CMD                     0x03
  69
  70 #define HOST_ENUM_REQ_CMD                   0x04
  71 #define HOST_ENUM_RES_CMD                   0x84
  72
  73 #define HOST_CLIENT_PROPERTEIS_REQ_CMD      0x05
  74 #define HOST_CLIENT_PROPERTEIS_RES_CMD      0x85
  75
  76 #define CLIENT_CONNECT_REQ_CMD              0x06
  77 #define CLIENT_CONNECT_RES_CMD              0x86
  78
  79 #define CLIENT_DISCONNECT_REQ_CMD           0x07
  80 #define CLIENT_DISCONNECT_RES_CMD           0x87
  81
  82 #define HECI_FLOW_CONTROL_CMD               0x08
  83
  84
  85 #define AMT_WD_VALUE 120        /* seconds */
  86
  87 #define HECI_WATCHDOG_DATA_SIZE         16
  88 #define HECI_START_WD_DATA_SIZE         20
  89 #define HECI_WD_PARAMS_SIZE             4
  90
  91 /* IOCTL commands */
  92 #define IOCTL_HECI_GET_VERSION \
  93     _IOWR('H' , 0x0, struct heci_message_data)
  94 #define IOCTL_HECI_CONNECT_CLIENT \
  95     _IOWR('H' , 0x01, struct heci_message_data)
  96 #define IOCTL_HECI_WD \
  97     _IOWR('H' , 0x02, struct heci_message_data)
  98 #define IOCTL_HECI_BYPASS_WD \
  99     _IOWR('H' , 0x10, struct heci_message_data)
 100
 101 enum heci_stop_reason_types{
 102         DRIVER_STOP_REQUEST = 0x00,
 103         DEVICE_D1_ENTRY = 0x01,
 104         DEVICE_D2_ENTRY = 0x02,
 105         DEVICE_D3_ENTRY = 0x03,
 106         SYSTEM_S1_ENTRY = 0x04,
 107         SYSTEM_S2_ENTRY = 0x05,
 108         SYSTEM_S3_ENTRY = 0x06,
 109         SYSTEM_S4_ENTRY = 0x07,
 110         SYSTEM_S5_ENTRY = 0x08
 111 };
 112
 113 enum me_stop_reason_types{
 114         FW_UPDATE = 0x00
 115 };
 116
 117 enum client_connect_status_types{
 118         CCS_SUCCESS = 0x00,
 119         CCS_NOT_FOUND = 0x01,
 120         CCS_ALREADY_STARTED = 0x02,
 121         CCS_OUT_OF_RESOURCES = 0x03,
 122         CCS_MESSAGE_SMALL = 0x04
 123 };
 124
 125 enum client_disconnect_status_types{
 126         CDS_SUCCESS = 0x00
 127 };
 128
 129
 130 /*
 131  * heci interface function prototypes
 132  */
 133 void heci_set_csr_register(struct iamt_heci_device *dev);
 134 void heci_csr_enable_interrupts(struct iamt_heci_device *dev);
 135 void heci_csr_disable_interrupts(struct iamt_heci_device *dev);
 136 void heci_csr_clear_his(struct iamt_heci_device *dev);
 137
 138 void heci_read_slots(struct iamt_heci_device *dev,
 139                      unsigned char *buffer, unsigned long buffer_length);
 140
 141 int heci_write_message(struct iamt_heci_device *dev,
 142                              struct heci_msg_hdr *header,
 143                              unsigned char *write_buffer,
 144                              unsigned long write_length);
 145
 146 int host_buffer_is_empty(struct iamt_heci_device *dev);
 147
 148 __s32 count_full_read_slots(struct iamt_heci_device *dev);
 149
 150 __s32 count_empty_write_slots(const struct iamt_heci_device *dev);
 151
 152 int flow_ctrl_creds(struct iamt_heci_device *dev,
 153                                    struct heci_file_private *file_ext);
 154
 155 int heci_send_wd(struct iamt_heci_device *dev);
 156
 157 void flow_ctrl_reduce(struct iamt_heci_device *dev,
 158                          struct heci_file_private *file_ext);
 159
 160 int heci_send_flow_control(struct iamt_heci_device *dev,
 161                                  struct heci_file_private *file_ext);
 162
 163 int heci_disconnect(struct iamt_heci_device *dev,
 164                           struct heci_file_private *file_ext);
 165 int other_client_is_connecting(struct iamt_heci_device *dev,
 166                                      struct heci_file_private *file_ext);
 167 int heci_connect(struct iamt_heci_device *dev,
 168                        struct heci_file_private *file_ext);
 169
 170 #endif /* _HECI_INTERFACE_H_ */