[PATCH 15/39] i2400m: host-to-device protocol definitions

Inaky Perez-Gonzalez
2008-11-26T22:41:18Z

This defines the structures and constants for the host-device
protocols:

- boot / firmware upload protocol

- general data transport protocol

- control protocol

This header file is done in such a way that can also be used verbatim
by user space.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
---
include/linux/wimax/i2400m.h | 512 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 512 insertions(+), 0 deletions(-)
create mode 100644 include/linux/wimax/i2400m.h

diff --git a/include/linux/wimax/i2400m.h b/include/linux/wimax/i2400m.h
new file mode 100644
index 0000000..74198f5
--- /dev/null
+++ b/include/linux/wimax/i2400m.h
@@ -0,0 +1,512 @@
+/*
+ * Intel Wireless WiMax Connection 2400m
+ * Host-Device protocol interface definitions
+ *
+ *
+ * Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * 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 MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * 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 DAMAGE.
+ *
+ *
+ * Intel Corporation <linux-wimax@intel.com>
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * - Initial implementation
+ *
+ *
+ * This header defines the data structures and constants used to
+ * communicate with the device.
+ *
+ * BOOTMODE/BOOTROM/FIRMWARE UPLOAD PROTOCOL
+ *
+ * The firmware upload protocol is quite simple and only requires a
+ * handful of commands. See drivers/net/wimax/i2400m/fw.c for more
+ * details.
+ *
+ * The BCF data structure is for the firmware file header.
+ *
+ *
+ * THE DATA / CONTROL PROTOCOL
+ *
+ * This is the normal protocol spoken with the device once the
+ * firmware is uploaded. It transports data payloads and control
+ * messages back and forth.
+ *
+ * It consists 'messages' that pack one or more payloads each. The
+ * format is described in detail in drivers/net/wimax/i2400m/rx.c and
+ * tx.c.
+ *
+ *
+ * THE L3L4 PROTOCOL
+ *
+ * The term L3L4 refers to Layer 3 (the device), Layer 4 (the
+ * driver/host software).
+ *
+ * This is the control protocol used by the host to control the i2400m
+ * device (scan, connect, disconnect...). This is sent to / received
+ * as control frames. These frames consist of a header and zero or
+ * more TLVs with information. We call each control frame a "message".
+ *
+ * Each message is composed of:
+ *
+ * HEADER
+ * [TLV0 + PAYLOAD0]
+ * [TLV1 + PAYLOAD1]
+ * [...]
+ * [TLVN + PAYLOADN]
+ *
+ * The HEADER is defined by 'struct i2400m_l3l4_hdr'. The payloads are
+ * defined by a TLV structure (Type Length Value) which is a 'header'
+ * (struct i2400m_tlv_hdr) and then the payload.
+ *
+ * All integers are represented as Little Endian.
+ *
+ * - REQUESTS AND EVENTS
+ *
+ * The requests can be clasified as follows:
+ *
+ * COMMAND: implies a request from the host to the device requesting
+ * an action being performed. The device will reply with a
+ * message (with the same type as the command), status and
+ * no (TLV) payload. Execution of a command might cause
+ * events (of different type) to be sent later on as
+ * device's state changes.
+ *
+ * GET/SET: similar to COMMAND, but will not cause other
+ * EVENTs. The reply, in the case of GET, will contain
+ * TLVs with the requested information.
+ *
+ * EVENT: asynchronous messages sent from the device, maybe as a
+ * consequence of previous COMMANDs but disassociated from
+ * them.
+ *
+ * Only one request might be pending at the same time (ie: don't
+ * parallelize nor post another GET request before the previous
+ * COMMAND has been acknowledged with it's corresponding reply by the
+ * device).
+ *
+ * The different requests and their formats are described below:
+ *
+ * I2400M_MT_* Message types
+ * I2400M_MS_* Message status (for replies, events)
+ * i2400m_tlv_* TLVs
+ *
+ * data types are named 'struct i2400m_msg_OPNAME', OPNAME matching the
+ * operation.
+ */
+
+#ifndef __LINUX__WIMAX__I2400M_H__
+#define __LINUX__WIMAX__I2400M_H__
+
+#include <linux/types.h>
+
+
+/*
+ * Host Device Interface (HDI) common to all busses
+ */
+
+/* Boot-mode (firmware upload mode) commands */
+
+/* Header for the firmware file */
+struct i2400m_bcf_hdr {
+ __le32 module_type;
+ __le32 header_len;
+ __le32 header_version;
+ __le32 module_id;
+ __le32 module_vendor;
+ __le32 date; /* BCD YYYMMDD */
+ __le32 size;
+ __le32 key_size; /* in dwords */
+ __le32 modulus_size; /* in dwords */
+ __le32 exponent_size; /* in dwords */
+ __u8 reserved[88];
+} __attribute__ ((packed));
+
+/* Boot mode opcodes */
+enum i2400m_brh_opcode {
+ I2400M_BRH_READ = 1,
+ I2400M_BRH_WRITE = 2,
+ I2400M_BRH_JUMP = 3,
+ I2400M_BRH_SIGNED_JUMP = 8,
+ I2400M_BRH_HASH_PAYLOAD_ONLY = 9,
+};
+
+/* Boot mode command masks and stuff */
+enum i2400m_brh {
+ I2400M_BRH_SIGNATURE = 0xcbbc0000,
+ I2400M_BRH_SIGNATURE_MASK = 0xffff0000,
+ I2400M_BRH_SIGNATURE_SHIFT = 16,
+ I2400M_BRH_OPCODE_MASK = 0x0000000f,
+ I2400M_BRH_RESPONSE_MASK = 0x000000f0,
+ I2400M_BRH_RESPONSE_SHIFT = 4,
+ I2400M_BRH_DIRECT_ACCESS = 0x00000400,
+ I2400M_BRH_RESPONSE_REQUIRED = 0x00000200,
+ I2400M_BRH_USE_CHECKSUM = 0x00000100,
+};
+
+
+/* Constants for bcf->module_id */
+enum i2400m_bcf_mod_id {
+ /* Firmware file carries its own pokes -- pokes are a set of
+ * magical values that have to be written in certain memory
+ * addresses to get the device up and ready for firmware
+ * download when it is in non-signed boot mode. */
+ I2400M_BCF_MOD_ID_POKES = 0x000000001,
+};
+
+
+/**
+ * i2400m_bootrom_header - Header for a boot-mode command
+ *
+ * @cmd: the above command descriptor
+ * @target_addr: where on the device memory should the action be performed.
+ * @data_size: for read/write, amount of data to be read/written
+ * @block_checksum: checksum value (if applicable)
+ * @payload: the beginning of data attached to this header
+ */
+struct i2400m_bootrom_header {
+ __le32 command; /* Compose with enum i2400_brh */
+ __le32 target_addr;
+ __le32 data_size;
+ __le32 block_checksum;
+ char payload[0];
+} __attribute__ ((packed));
+
+
+/*
+ * Data / control protocol
+ */
+
+/* Packet types for the host-device interface */
+enum i2400m_pt {
+ I2400M_PT_DATA = 0,
+ I2400M_PT_CTRL,
+ I2400M_PT_TRACE, /* For device debug */
+ I2400M_PT_RESET_WARM, /* device reset */
+ I2400M_PT_RESET_COLD, /* USB[transport] reset, like reconnect */
+ I2400M_PT_ILLEGAL
+};
+
+
+/*
+ * Payload for a data packet
+ *
+ * This is prefixed to each and every outgoing DATA type.
+ */
+struct i2400m_pl_data_hdr {
+ __le32 reserved;
+} __attribute__((packed));
+
+
+/* Misc constants */
+enum {
+ I2400M_PL_PAD = 16, /* Payload data size alignment */
+ I2400M_PL_SIZE_MAX = 0x3EFF,
+ I2400M_MAX_PLS_IN_MSG = 60,
+ /* protocol barkers: sync sequences; for notifications they
+ * are sent in groups of four. */
+ I2400M_H2D_PREVIEW_BARKER = 0xcafe900d,
+ I2400M_COLD_RESET_BARKER = 0xc01dc01d,
+ I2400M_WARM_RESET_BARKER = 0x50f750f7,
+ I2400M_NBOOT_BARKER = 0xdeadbeef,
+ I2400M_SBOOT_BARKER = 0x0ff1c1a1,
+ I2400M_ACK_BARKER = 0xfeedbabe,
+ I2400M_D2H_MSG_BARKER = 0xbeefbabe,
+};
+
+
+/*
+ * Hardware payload descriptor
+ *
+ * Bitfields encoded in a struct to enforce typing semantics.
+ *
+ * Look in rx.c and tx.c for a full description of the format.
+ */
+struct i2400m_pld {
+ __le32 val;
+} __attribute__ ((packed));
+
+#define I2400M_PLD_SIZE_MASK 0x00003fff
+#define I2400M_PLD_TYPE_SHIFT 16
+#define I2400M_PLD_TYPE_MASK 0x000f0000
+
+/*
+ * Header for a TX message or RX message
+ *
+ * @barker: preamble
+ * @size: used for management of the FIFO queue buffer; before
+ * sending, this is converted to be a real preamble. This
+ * indicates the real size of the TX message that starts at this
+ * point. If the highest bit is set, then this message is to be
+ * skipped.
+ * @sequence: sequence number of this message
+ * @offset: offset where the message itself starts -- see the comments
+ * in the file header about message header and payload descriptor
+ * alignment.
+ * @num_pls: number of payloads in this message
+ * @padding: amount of padding bytes at the end of the message to make
+ * it be of block-size aligned
+ *
+ * Look in rx.c and tx.c for a full description of the format.
+ */
+struct i2400m_msg_hdr {
+ union {
+ __le32 barker;
+ __u32 size; /* same size type as barker!! */
+ };
+ union {
+ __le32 sequence;
+ __u32 offset; /* same size type as barker!! */
+ };
+ __le16 num_pls;
+ __le16 rsv1;
+ __le16 padding;
+ __le16 rsv2;
+ struct i2400m_pld pld[0];
+} __attribute__ ((packed));
+
+
+
+/*
+ * L3/L4 control protocol
+ */
+
+enum {
+ /* Interface version */
+ I2400M_L3L4_VERSION = 0x0100,
+};
+
+/* Message types */
+enum i2400m_mt {
+ I2400M_MT_RESERVED = 0x0000,
+ I2400M_MT_INVALID = 0xffff,
+ I2400M_MT_REPORT_MASK = 0x8000,
+
+ I2400M_MT_GET_SCAN_RESULT = 0x4202,
+ I2400M_MT_SET_SCAN_PARAM = 0x4402,
+ I2400M_MT_CMD_RF_CONTROL = 0x4602,
+ I2400M_MT_CMD_SCAN = 0x4603,
+ I2400M_MT_CMD_CONNECT = 0x4604,
+ I2400M_MT_CMD_DISCONNECT = 0x4605,
+ I2400M_MT_CMD_EXIT_IDLE = 0x4606,
+ I2400M_MT_GET_LM_VERSION = 0x5201,
+ I2400M_MT_GET_DEVICE_INFO = 0x5202,
+ I2400M_MT_GET_LINK_STATUS = 0x5203,
+ I2400M_MT_GET_STATISTICS = 0x5204,
+ I2400M_MT_GET_STATE = 0x5205,
+ I2400M_MT_GET_MEDIA_STATUS = 0x5206,
+ I2400M_MT_SET_INIT_CONFIG = 0x5404,
+ I2400M_MT_CMD_INIT = 0x5601,
+ I2400M_MT_CMD_TERMINATE = 0x5602,
+ I2400M_MT_CMD_MODE_OF_OP = 0x5603,
+ I2400M_MT_CMD_RESET_DEVICE = 0x5604,
+ I2400M_MT_CMD_MONITOR_CONTROL = 0x5605,
+ I2400M_MT_CMD_ENTER_POWERSAVE = 0x5606,
+ I2400M_MT_GET_TLS_OPERATION_RESULT = 0x6201,
+ I2400M_MT_SET_EAP_SUCCESS = 0x6402,
+ I2400M_MT_SET_EAP_FAIL = 0x6403,
+ I2400M_MT_SET_EAP_KEY = 0x6404,
+ I2400M_MT_CMD_SEND_EAP_RESPONSE = 0x6602,
+ I2400M_MT_REPORT_SCAN_RESULT = 0xc002,
+ I2400M_MT_REPORT_STATE = 0xd002,
+ I2400M_MT_REPORT_POWERSAVE_READY = 0xd005,
+ I2400M_MT_REPORT_EAP_REQUEST = 0xe002,
+ I2400M_MT_REPORT_EAP_RESTART = 0xe003,
+ I2400M_MT_REPORT_ALT_ACCEPT = 0xe004,
+ I2400M_MT_REPORT_KEY_REQUEST = 0xe005,
+};
+
+
+/*
+ * Message Ack Status codes
+ *
+ * When a message is replied-to, this status is reported.
+ */
+enum i2400m_ms {
+ I2400M_MS_DONE_OK = 0,
+ I2400M_MS_DONE_IN_PROGRESS = 1,
+ I2400M_MS_INVALID_OP = 2,
+ I2400M_MS_BAD_STATE = 3,
+ I2400M_MS_ILLEGAL_VALUE = 4,
+ I2400M_MS_MISSING_PARAMS = 5,
+ I2400M_MS_VERSION_ERROR = 6,
+ I2400M_MS_ACCESSIBILITY_ERROR = 7,
+ I2400M_MS_BUSY = 8,
+ I2400M_MS_CORRUPTED_TLV = 9,
+ I2400M_MS_UNINITIALIZED = 10,
+ I2400M_MS_UNKNOWN_ERROR = 11,
+ I2400M_MS_PRODUCTION_ERROR = 12,
+ I2400M_MS_NO_RF = 13,
+ I2400M_MS_NOT_READY_FOR_POWERSAVE = 14,
+ I2400M_MS_THERMAL_CRITICAL = 15,
+ I2400M_MS_MAX
+};
+
+
+/**
+ * i2400m_tlv - enumeration of the different types of TLVs
+ *
+ * TLVs stand for type-length-value and are the header for a payload
+ * composed of almost anything. Each payload has a type assigned
+ * and a length.
+ */
+enum i2400m_tlv {
+ I2400M_TLV_L4_MESSAGE_VERSIONS = 129,
+ I2400M_TLV_SYSTEM_STATE = 141,
+ I2400M_TLV_MEDIA_STATUS = 161,
+ I2400M_TLV_RF_OPERATION = 162,
+ I2400M_TLV_RF_STATUS = 163,
+ I2400M_TLV_DEVICE_RESET_TYPE = 132,
+ I2400M_TLV_CONFIG_IDLE_PARAMETERS = 601,
+};
+
+
+struct i2400m_tlv_hdr {
+ __le16 type;
+ __le16 length; /* payload's */
+ __u8 pl[0];
+} __attribute__((packed));
+
+
+struct i2400m_l3l4_hdr {
+ __le16 type;
+ __le16 length; /* payload's */
+ __le16 version;
+ __le16 resv1;
+ __le16 status;
+ __le16 resv2;
+ struct i2400m_tlv_hdr pl[0];
+} __attribute__((packed));
+
+
+/**
+ * i2400m_system_state - different states of the device
+ */
+enum i2400m_system_state {
+ I2400M_SS_UNINITIALIZED = 1,
+ I2400M_SS_INIT,
+ I2400M_SS_READY,
+ I2400M_SS_SCAN,
+ I2400M_SS_STANDBY,
+ I2400M_SS_CONNECTING,
+ I2400M_SS_WIMAX_CONNECTED,
+ I2400M_SS_DATA_PATH_CONNECTED,
+ I2400M_SS_IDLE,
+ I2400M_SS_DISCONNECTING,
+ I2400M_SS_OUT_OF_ZONE,
+ I2400M_SS_SLEEPACTIVE,
+ I2400M_SS_PRODUCTION,
+ I2400M_SS_CONFIG,
+ I2400M_SS_RF_OFF,
+ I2400M_SS_RF_SHUTDOWN,
+ I2400M_SS_DEVICE_DISCONNECT,
+ I2400M_SS_MAX,
+};
+
+
+/**
+ * i2400m_tlv_system_state - report on the state of the system
+ *
+ * @state: see enum i2400m_system_state
+ */
+struct i2400m_tlv_system_state {
+ struct i2400m_tlv_hdr hdr;
+ __le32 state;
+} __attribute__((packed));
+
+
+struct i2400m_tlv_l4_message_versions {
+ struct i2400m_tlv_hdr hdr;
+ __le16 major;
+ __le16 minor;
+ __le16 branch;
+ __le16 reserved;
+} __attribute__((packed));
+
+
+struct i2400m_tlv_detailed_device_info {
+ struct i2400m_tlv_hdr hdr;
+ __u8 reserved1[400];
+ __u8 mac_address[6];
+ __u8 reserved2[2];
+} __attribute__((packed));
+
+
+enum i2400m_rf_switch_status {
+ I2400M_RF_SWITCH_ON = 1,
+ I2400M_RF_SWITCH_OFF = 2,
+};
+
+struct i2400m_tlv_rf_switches_status {
+ struct i2400m_tlv_hdr hdr;
+ __u8 sw_rf_switch; /* 1 ON, 2 OFF */
+ __u8 hw_rf_switch; /* 1 ON, 2 OFF */
+ __u8 reserved[2];
+} __attribute__((packed));
+
+
+enum {
+ i2400m_rf_operation_on = 1,
+ i2400m_rf_operation_off = 2
+};
+
+struct i2400m_tlv_rf_operation {
+ struct i2400m_tlv_hdr hdr;
+ __le32 status; /* 1 ON, 2 OFF */
+} __attribute__((packed));
+
+
+enum i2400m_tlv_reset_type {
+ I2400M_RESET_TYPE_COLD = 1,
+ I2400M_RESET_TYPE_WARM
+};
+
+struct i2400m_tlv_device_reset_type {
+ struct i2400m_tlv_hdr hdr;
+ __le32 reset_type;
+} __attribute__((packed));
+
+
+struct i2400m_tlv_config_idle_parameters {
+ struct i2400m_tlv_hdr hdr;
+ __le32 idle_timeout; /* 100 to 300000 ms [5min], 100 increments
+ * 0 disabled */
+ __le32 idle_paging_interval; /* frames */
+} __attribute__((packed));
+
+
+enum i2400m_media_status {
+ I2400M_MEDIA_STATUS_LINK_UP = 1,
+ I2400M_MEDIA_STATUS_LINK_DOWN,
+ I2400M_MEDIA_STATUS_LINK_RENEW,
+};
+
+struct i2400m_tlv_media_status {
+ struct i2400m_tlv_hdr hdr;
+ __le32 media_status;
+} __attribute__((packed));
+
+#endif /* #ifndef __LINUX__WIMAX__I2400M_H__ */
--
1.5.6.5