drivers/misc/mei/hw.h

   1 /*
   2  *
   3  * Intel Management Engine Interface (Intel MEI) Linux driver
   4  * Copyright (c) 2003-2012, Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  */
  16
  17 #ifndef _MEI_HW_TYPES_H_
  18 #define _MEI_HW_TYPES_H_
  19
  20 #include <linux/uuid.h>
  21
  22 /*
  23  * Timeouts in Seconds
  24  */
  25 #define MEI_INTEROP_TIMEOUT         7  /* Timeout on ready message */
  26 #define MEI_CONNECT_TIMEOUT         3  /* HPS: at least 2 seconds */
  27
  28 #define MEI_CL_CONNECT_TIMEOUT     15  /* HPS: Client Connect Timeout */
  29 #define MEI_CLIENTS_INIT_TIMEOUT   15  /* HPS: Clients Enumeration Timeout */
  30
  31 #define MEI_IAMTHIF_STALL_TIMER    12  /* HPS */
  32 #define MEI_IAMTHIF_READ_TIMER     10  /* HPS */
  33
  34 /*
  35  * Internal Clients Number
  36  */
  37 #define MEI_WD_HOST_CLIENT_ID          1
  38 #define MEI_IAMTHIF_HOST_CLIENT_ID     2
  39
  40 /*
  41  * MEI device IDs
  42  */
  43 #define MEI_DEV_ID_82946GZ    0x2974  /* 82946GZ/GL */
  44 #define MEI_DEV_ID_82G35      0x2984  /* 82G35 Express */
  45 #define MEI_DEV_ID_82Q965     0x2994  /* 82Q963/Q965 */
  46 #define MEI_DEV_ID_82G965     0x29A4  /* 82P965/G965 */
  47
  48 #define MEI_DEV_ID_82GM965    0x2A04  /* Mobile PM965/GM965 */
  49 #define MEI_DEV_ID_82GME965   0x2A14  /* Mobile GME965/GLE960 */
  50
  51 #define MEI_DEV_ID_ICH9_82Q35 0x29B4  /* 82Q35 Express */
  52 #define MEI_DEV_ID_ICH9_82G33 0x29C4  /* 82G33/G31/P35/P31 Express */
  53 #define MEI_DEV_ID_ICH9_82Q33 0x29D4  /* 82Q33 Express */
  54 #define MEI_DEV_ID_ICH9_82X38 0x29E4  /* 82X38/X48 Express */
  55 #define MEI_DEV_ID_ICH9_3200  0x29F4  /* 3200/3210 Server */
  56
  57 #define MEI_DEV_ID_ICH9_6     0x28B4  /* Bearlake */
  58 #define MEI_DEV_ID_ICH9_7     0x28C4  /* Bearlake */
  59 #define MEI_DEV_ID_ICH9_8     0x28D4  /* Bearlake */
  60 #define MEI_DEV_ID_ICH9_9     0x28E4  /* Bearlake */
  61 #define MEI_DEV_ID_ICH9_10    0x28F4  /* Bearlake */
  62
  63 #define MEI_DEV_ID_ICH9M_1    0x2A44  /* Cantiga */
  64 #define MEI_DEV_ID_ICH9M_2    0x2A54  /* Cantiga */
  65 #define MEI_DEV_ID_ICH9M_3    0x2A64  /* Cantiga */
  66 #define MEI_DEV_ID_ICH9M_4    0x2A74  /* Cantiga */
  67
  68 #define MEI_DEV_ID_ICH10_1    0x2E04  /* Eaglelake */
  69 #define MEI_DEV_ID_ICH10_2    0x2E14  /* Eaglelake */
  70 #define MEI_DEV_ID_ICH10_3    0x2E24  /* Eaglelake */
  71 #define MEI_DEV_ID_ICH10_4    0x2E34  /* Eaglelake */
  72
  73 #define MEI_DEV_ID_IBXPK_1    0x3B64  /* Calpella */
  74 #define MEI_DEV_ID_IBXPK_2    0x3B65  /* Calpella */
  75
  76 #define MEI_DEV_ID_CPT_1      0x1C3A  /* Couger Point */
  77 #define MEI_DEV_ID_PBG_1      0x1D3A  /* C600/X79 Patsburg */
  78
  79 #define MEI_DEV_ID_PPT_1      0x1E3A  /* Panther Point */
  80 #define MEI_DEV_ID_PPT_2      0x1CBA  /* Panther Point */
  81 #define MEI_DEV_ID_PPT_3      0x1DBA  /* Panther Point */
  82
  83 #define MEI_DEV_ID_LPT        0x8C3A  /* Lynx Point */
  84 #define MEI_DEV_ID_LPT_LP     0x9C3A  /* Lynx Point LP */
  85 /*
  86  * MEI HW Section
  87  */
  88
  89 /* MEI registers */
  90 /* H_CB_WW - Host Circular Buffer (CB) Write Window register */
  91 #define H_CB_WW    0
  92 /* H_CSR - Host Control Status register */
  93 #define H_CSR      4
  94 /* ME_CB_RW - ME Circular Buffer Read Window register (read only) */
  95 #define ME_CB_RW   8
  96 /* ME_CSR_HA - ME Control Status Host Access register (read only) */
  97 #define ME_CSR_HA  0xC
  98
  99
 100 /* register bits of H_CSR (Host Control Status register) */
 101 /* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */
 102 #define H_CBD             0xFF000000
 103 /* Host Circular Buffer Write Pointer */
 104 #define H_CBWP            0x00FF0000
 105 /* Host Circular Buffer Read Pointer */
 106 #define H_CBRP            0x0000FF00
 107 /* Host Reset */
 108 #define H_RST             0x00000010
 109 /* Host Ready */
 110 #define H_RDY             0x00000008
 111 /* Host Interrupt Generate */
 112 #define H_IG              0x00000004
 113 /* Host Interrupt Status */
 114 #define H_IS              0x00000002
 115 /* Host Interrupt Enable */
 116 #define H_IE              0x00000001
 117
 118
 119 /* register bits of ME_CSR_HA (ME Control Status Host Access register) */
 120 /* ME CB (Circular Buffer) Depth HRA (Host Read Access) - host read only
 121 access to ME_CBD */
 122 #define ME_CBD_HRA        0xFF000000
 123 /* ME CB Write Pointer HRA - host read only access to ME_CBWP */
 124 #define ME_CBWP_HRA       0x00FF0000
 125 /* ME CB Read Pointer HRA - host read only access to ME_CBRP */
 126 #define ME_CBRP_HRA       0x0000FF00
 127 /* ME Reset HRA - host read only access to ME_RST */
 128 #define ME_RST_HRA        0x00000010
 129 /* ME Ready HRA - host read only access to ME_RDY */
 130 #define ME_RDY_HRA        0x00000008
 131 /* ME Interrupt Generate HRA - host read only access to ME_IG */
 132 #define ME_IG_HRA         0x00000004
 133 /* ME Interrupt Status HRA - host read only access to ME_IS */
 134 #define ME_IS_HRA         0x00000002
 135 /* ME Interrupt Enable HRA - host read only access to ME_IE */
 136 #define ME_IE_HRA         0x00000001
 137
 138 /*
 139  * MEI Version
 140  */
 141 #define HBM_MINOR_VERSION                   0
 142 #define HBM_MAJOR_VERSION                   1
 143 #define HBM_TIMEOUT                         1   /* 1 second */
 144
 145 /* Host bus message command opcode */
 146 #define MEI_HBM_CMD_OP_MSK                  0x7f
 147 /* Host bus message command RESPONSE */
 148 #define MEI_HBM_CMD_RES_MSK                 0x80
 149
 150 /*
 151  * MEI Bus Message Command IDs
 152  */
 153 #define HOST_START_REQ_CMD                  0x01
 154 #define HOST_START_RES_CMD                  0x81
 155
 156 #define HOST_STOP_REQ_CMD                   0x02
 157 #define HOST_STOP_RES_CMD                   0x82
 158
 159 #define ME_STOP_REQ_CMD                     0x03
 160
 161 #define HOST_ENUM_REQ_CMD                   0x04
 162 #define HOST_ENUM_RES_CMD                   0x84
 163
 164 #define HOST_CLIENT_PROPERTIES_REQ_CMD      0x05
 165 #define HOST_CLIENT_PROPERTIES_RES_CMD      0x85
 166
 167 #define CLIENT_CONNECT_REQ_CMD              0x06
 168 #define CLIENT_CONNECT_RES_CMD              0x86
 169
 170 #define CLIENT_DISCONNECT_REQ_CMD           0x07
 171 #define CLIENT_DISCONNECT_RES_CMD           0x87
 172
 173 #define MEI_FLOW_CONTROL_CMD                0x08
 174
 175 /*
 176  * MEI Stop Reason
 177  * used by hbm_host_stop_request.reason
 178  */
 179 enum mei_stop_reason_types {
 180         DRIVER_STOP_REQUEST = 0x00,
 181         DEVICE_D1_ENTRY = 0x01,
 182         DEVICE_D2_ENTRY = 0x02,
 183         DEVICE_D3_ENTRY = 0x03,
 184         SYSTEM_S1_ENTRY = 0x04,
 185         SYSTEM_S2_ENTRY = 0x05,
 186         SYSTEM_S3_ENTRY = 0x06,
 187         SYSTEM_S4_ENTRY = 0x07,
 188         SYSTEM_S5_ENTRY = 0x08
 189 };
 190
 191 /*
 192  * Client Connect Status
 193  * used by hbm_client_connect_response.status
 194  */
 195 enum client_connect_status_types {
 196         CCS_SUCCESS = 0x00,
 197         CCS_NOT_FOUND = 0x01,
 198         CCS_ALREADY_STARTED = 0x02,
 199         CCS_OUT_OF_RESOURCES = 0x03,
 200         CCS_MESSAGE_SMALL = 0x04
 201 };
 202
 203 /*
 204  * Client Disconnect Status
 205  */
 206 enum client_disconnect_status_types {
 207         CDS_SUCCESS = 0x00
 208 };
 209
 210 /*
 211  *  MEI BUS Interface Section
 212  */
 213 struct mei_msg_hdr {
 214         u32 me_addr:8;
 215         u32 host_addr:8;
 216         u32 length:9;
 217         u32 reserved:6;
 218         u32 msg_complete:1;
 219 } __packed;
 220
 221
 222 struct mei_bus_message {
 223         u8 hbm_cmd;
 224         u8 data[0];
 225 } __packed;
 226
 227 struct hbm_version {
 228         u8 minor_version;
 229         u8 major_version;
 230 } __packed;
 231
 232 struct hbm_host_version_request {
 233         u8 hbm_cmd;
 234         u8 reserved;
 235         struct hbm_version host_version;
 236 } __packed;
 237
 238 struct hbm_host_version_response {
 239         u8 hbm_cmd;
 240         u8 host_version_supported;
 241         struct hbm_version me_max_version;
 242 } __packed;
 243
 244 struct hbm_host_stop_request {
 245         u8 hbm_cmd;
 246         u8 reason;
 247         u8 reserved[2];
 248 } __packed;
 249
 250 struct hbm_host_stop_response {
 251         u8 hbm_cmd;
 252         u8 reserved[3];
 253 } __packed;
 254
 255 struct hbm_me_stop_request {
 256         u8 hbm_cmd;
 257         u8 reason;
 258         u8 reserved[2];
 259 } __packed;
 260
 261 struct hbm_host_enum_request {
 262         u8 hbm_cmd;
 263         u8 reserved[3];
 264 } __packed;
 265
 266 struct hbm_host_enum_response {
 267         u8 hbm_cmd;
 268         u8 reserved[3];
 269         u8 valid_addresses[32];
 270 } __packed;
 271
 272 struct mei_client_properties {
 273         uuid_le protocol_name;
 274         u8 protocol_version;
 275         u8 max_number_of_connections;
 276         u8 fixed_address;
 277         u8 single_recv_buf;
 278         u32 max_msg_length;
 279 } __packed;
 280
 281 struct hbm_props_request {
 282         u8 hbm_cmd;
 283         u8 address;
 284         u8 reserved[2];
 285 } __packed;
 286
 287
 288 struct hbm_props_response {
 289         u8 hbm_cmd;
 290         u8 address;
 291         u8 status;
 292         u8 reserved[1];
 293         struct mei_client_properties client_properties;
 294 } __packed;
 295
 296 /**
 297  * struct hbm_client_connect_request - connect/disconnect request
 298  *
 299  * @hbm_cmd - bus message command header
 300  * @me_addr - address of the client in ME
 301  * @host_addr - address of the client in the driver
 302  * @reserved
 303  */
 304 struct hbm_client_connect_request {
 305         u8 hbm_cmd;
 306         u8 me_addr;
 307         u8 host_addr;
 308         u8 reserved;
 309 } __packed;
 310
 311 /**
 312  * struct hbm_client_connect_response - connect/disconnect response
 313  *
 314  * @hbm_cmd - bus message command header
 315  * @me_addr - address of the client in ME
 316  * @host_addr - address of the client in the driver
 317  * @status - status of the request
 318  */
 319 struct hbm_client_connect_response {
 320         u8 hbm_cmd;
 321         u8 me_addr;
 322         u8 host_addr;
 323         u8 status;
 324 } __packed;
 325
 326
 327 #define MEI_FC_MESSAGE_RESERVED_LENGTH           5
 328
 329 struct hbm_flow_control {
 330         u8 hbm_cmd;
 331         u8 me_addr;
 332         u8 host_addr;
 333         u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
 334 } __packed;
 335
 336 struct mei_me_client {
 337         struct mei_client_properties props;
 338         u8 client_id;
 339         u8 mei_flow_ctrl_creds;
 340 } __packed;
 341
 342
 343 #endif