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marcus.erl |
/* hermes.h
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*
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* Driver core for the "Hermes" wireless MAC controller, as used in
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* the Lucent Orinoco and Cabletron RoamAbout cards. It should also
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* work on the hfa3841 and hfa3842 MAC controller chips used in the
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* Prism I & II chipsets.
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*
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* This is not a complete driver, just low-level access routines for
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* the MAC controller itself.
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*
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* Based on the prism2 driver from Absolute Value Systems' linux-wlan
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* project, the Linux wvlan_cs driver, Lucent's HCF-Light
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* (wvlan_hcf.c) library, and the NetBSD wireless driver.
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*
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* Copyright (C) 2000, David Gibson, Linuxcare Australia.
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* (C) Copyright David Gibson, IBM Corp. 2001-2003.
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*
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* Portions taken from hfa384x.h, Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
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*
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* This file distributed under the GPL, version 2.
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*/
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#ifndef _HERMES_H
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#define _HERMES_H
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/* Notes on locking:
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*
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* As a module of low level hardware access routines, there is no
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* locking. Users of this module should ensure that they serialize
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* access to the hermes_t structure, and to the hardware
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*/
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#include <linux/if_ether.h>
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#include <asm/io.h>
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/*
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* Limits and constants
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*/
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#define HERMES_ALLOC_LEN_MIN (4)
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#define HERMES_ALLOC_LEN_MAX (2400)
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#define HERMES_LTV_LEN_MAX (34)
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#define HERMES_BAP_DATALEN_MAX (4096)
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#define HERMES_BAP_OFFSET_MAX (4096)
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#define HERMES_PORTID_MAX (7)
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#define HERMES_NUMPORTS_MAX (HERMES_PORTID_MAX+1)
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#define HERMES_PDR_LEN_MAX (260) /* in bytes, from EK */
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#define HERMES_PDA_RECS_MAX (200) /* a guess */
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#define HERMES_PDA_LEN_MAX (1024) /* in bytes, from EK */
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#define HERMES_SCANRESULT_MAX (35)
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#define HERMES_CHINFORESULT_MAX (8)
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#define HERMES_MAX_MULTICAST (16)
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#define HERMES_MAGIC (0x7d1f)
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/*
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* Hermes register offsets
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*/
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#define HERMES_CMD (0x00)
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#define HERMES_PARAM0 (0x02)
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#define HERMES_PARAM1 (0x04)
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#define HERMES_PARAM2 (0x06)
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#define HERMES_STATUS (0x08)
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#define HERMES_RESP0 (0x0A)
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#define HERMES_RESP1 (0x0C)
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#define HERMES_RESP2 (0x0E)
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#define HERMES_INFOFID (0x10)
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#define HERMES_RXFID (0x20)
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#define HERMES_ALLOCFID (0x22)
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#define HERMES_TXCOMPLFID (0x24)
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#define HERMES_SELECT0 (0x18)
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#define HERMES_OFFSET0 (0x1C)
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#define HERMES_DATA0 (0x36)
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#define HERMES_SELECT1 (0x1A)
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#define HERMES_OFFSET1 (0x1E)
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#define HERMES_DATA1 (0x38)
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#define HERMES_EVSTAT (0x30)
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#define HERMES_INTEN (0x32)
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#define HERMES_EVACK (0x34)
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#define HERMES_CONTROL (0x14)
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#define HERMES_SWSUPPORT0 (0x28)
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#define HERMES_SWSUPPORT1 (0x2A)
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#define HERMES_SWSUPPORT2 (0x2C)
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#define HERMES_AUXPAGE (0x3A)
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#define HERMES_AUXOFFSET (0x3C)
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#define HERMES_AUXDATA (0x3E)
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/*
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* CMD register bitmasks
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*/
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#define HERMES_CMD_BUSY (0x8000)
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#define HERMES_CMD_AINFO (0x7f00)
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#define HERMES_CMD_MACPORT (0x0700)
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#define HERMES_CMD_RECL (0x0100)
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#define HERMES_CMD_WRITE (0x0100)
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#define HERMES_CMD_PROGMODE (0x0300)
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#define HERMES_CMD_CMDCODE (0x003f)
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/*
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* STATUS register bitmasks
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*/
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#define HERMES_STATUS_RESULT (0x7f00)
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#define HERMES_STATUS_CMDCODE (0x003f)
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/*
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* OFFSET register bitmasks
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*/
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#define HERMES_OFFSET_BUSY (0x8000)
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#define HERMES_OFFSET_ERR (0x4000)
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#define HERMES_OFFSET_DATAOFF (0x0ffe)
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/*
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* Event register bitmasks (INTEN, EVSTAT, EVACK)
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*/
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#define HERMES_EV_TICK (0x8000)
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#define HERMES_EV_WTERR (0x4000)
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#define HERMES_EV_INFDROP (0x2000)
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#define HERMES_EV_INFO (0x0080)
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#define HERMES_EV_DTIM (0x0020)
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#define HERMES_EV_CMD (0x0010)
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#define HERMES_EV_ALLOC (0x0008)
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#define HERMES_EV_TXEXC (0x0004)
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#define HERMES_EV_TX (0x0002)
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#define HERMES_EV_RX (0x0001)
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/*
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* Command codes
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*/
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/*--- Controller Commands ----------------------------*/
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#define HERMES_CMD_INIT (0x0000)
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#define HERMES_CMD_ENABLE (0x0001)
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#define HERMES_CMD_DISABLE (0x0002)
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#define HERMES_CMD_DIAG (0x0003)
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/*--- Buffer Mgmt Commands ---------------------------*/
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#define HERMES_CMD_ALLOC (0x000A)
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#define HERMES_CMD_TX (0x000B)
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/*--- Regulate Commands ------------------------------*/
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#define HERMES_CMD_NOTIFY (0x0010)
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#define HERMES_CMD_INQUIRE (0x0011)
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/*--- Configure Commands -----------------------------*/
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#define HERMES_CMD_ACCESS (0x0021)
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#define HERMES_CMD_DOWNLD (0x0022)
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/*--- Serial I/O Commands ----------------------------*/
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#define HERMES_CMD_READMIF (0x0030)
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#define HERMES_CMD_WRITEMIF (0x0031)
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/*--- Debugging Commands -----------------------------*/
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#define HERMES_CMD_TEST (0x0038)
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/* Test command arguments */
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#define HERMES_TEST_SET_CHANNEL 0x0800
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#define HERMES_TEST_MONITOR 0x0b00
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#define HERMES_TEST_STOP 0x0f00
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/* Authentication algorithms */
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#define HERMES_AUTH_OPEN 1
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#define HERMES_AUTH_SHARED_KEY 2
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/* WEP settings */
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#define HERMES_WEP_PRIVACY_INVOKED 0x0001
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#define HERMES_WEP_EXCL_UNENCRYPTED 0x0002
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#define HERMES_WEP_HOST_ENCRYPT 0x0010
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#define HERMES_WEP_HOST_DECRYPT 0x0080
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/* Symbol hostscan options */
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#define HERMES_HOSTSCAN_SYMBOL_5SEC 0x0001
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#define HERMES_HOSTSCAN_SYMBOL_ONCE 0x0002
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#define HERMES_HOSTSCAN_SYMBOL_PASSIVE 0x0040
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#define HERMES_HOSTSCAN_SYMBOL_BCAST 0x0080
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/*
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* Frame structures and constants
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*/
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#define HERMES_DESCRIPTOR_OFFSET 0
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#define HERMES_802_11_OFFSET (14)
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#define HERMES_802_3_OFFSET (14+32)
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#define HERMES_802_2_OFFSET (14+32+14)
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#define HERMES_RXSTAT_ERR (0x0003)
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#define HERMES_RXSTAT_BADCRC (0x0001)
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#define HERMES_RXSTAT_UNDECRYPTABLE (0x0002)
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#define HERMES_RXSTAT_MACPORT (0x0700)
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#define HERMES_RXSTAT_PCF (0x1000) /* Frame was received in CF period */
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#define HERMES_RXSTAT_MSGTYPE (0xE000)
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#define HERMES_RXSTAT_1042 (0x2000) /* RFC-1042 frame */
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#define HERMES_RXSTAT_TUNNEL (0x4000) /* bridge-tunnel encoded frame */
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#define HERMES_RXSTAT_WMP (0x6000) /* Wavelan-II Management Protocol frame */
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struct hermes_tx_descriptor {
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__le16 status;
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__le16 reserved1;
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__le16 reserved2;
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__le32 sw_support;
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u8 retry_count;
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u8 tx_rate;
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__le16 tx_control;
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} __attribute__ ((packed));
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#define HERMES_TXSTAT_RETRYERR (0x0001)
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#define HERMES_TXSTAT_AGEDERR (0x0002)
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#define HERMES_TXSTAT_DISCON (0x0004)
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#define HERMES_TXSTAT_FORMERR (0x0008)
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#define HERMES_TXCTRL_TX_OK (0x0002) /* ?? interrupt on Tx complete */
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#define HERMES_TXCTRL_TX_EX (0x0004) /* ?? interrupt on Tx exception */
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#define HERMES_TXCTRL_802_11 (0x0008) /* We supply 802.11 header */
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#define HERMES_TXCTRL_ALT_RTRY (0x0020)
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/* Inquiry constants and data types */
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#define HERMES_INQ_TALLIES (0xF100)
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#define HERMES_INQ_SCAN (0xF101)
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#define HERMES_INQ_CHANNELINFO (0xF102)
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#define HERMES_INQ_HOSTSCAN (0xF103)
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#define HERMES_INQ_HOSTSCAN_SYMBOL (0xF104)
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#define HERMES_INQ_LINKSTATUS (0xF200)
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#define HERMES_INQ_SEC_STAT_AGERE (0xF202)
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struct hermes_tallies_frame {
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__le16 TxUnicastFrames;
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__le16 TxMulticastFrames;
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__le16 TxFragments;
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__le16 TxUnicastOctets;
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__le16 TxMulticastOctets;
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__le16 TxDeferredTransmissions;
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__le16 TxSingleRetryFrames;
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__le16 TxMultipleRetryFrames;
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__le16 TxRetryLimitExceeded;
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__le16 TxDiscards;
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__le16 RxUnicastFrames;
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__le16 RxMulticastFrames;
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__le16 RxFragments;
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__le16 RxUnicastOctets;
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__le16 RxMulticastOctets;
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__le16 RxFCSErrors;
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__le16 RxDiscards_NoBuffer;
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__le16 TxDiscardsWrongSA;
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__le16 RxWEPUndecryptable;
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__le16 RxMsgInMsgFragments;
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__le16 RxMsgInBadMsgFragments;
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/* Those last are probably not available in very old firmwares */
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__le16 RxDiscards_WEPICVError;
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__le16 RxDiscards_WEPExcluded;
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} __attribute__ ((packed));
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/* Grabbed from wlan-ng - Thanks Mark... - Jean II
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* This is the result of a scan inquiry command */
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/* Structure describing info about an Access Point */
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struct prism2_scan_apinfo {
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__le16 channel; /* Channel where the AP sits */
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__le16 noise; /* Noise level */
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__le16 level; /* Signal level */
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u8 bssid[ETH_ALEN]; /* MAC address of the Access Point */
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__le16 beacon_interv; /* Beacon interval */
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__le16 capabilities; /* Capabilities */
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__le16 essid_len; /* ESSID length */
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u8 essid[32]; /* ESSID of the network */
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u8 rates[10]; /* Bit rate supported */
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__le16 proberesp_rate; /* Data rate of the response frame */
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__le16 atim; /* ATIM window time, Kus (hostscan only) */
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} __attribute__ ((packed));
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| 267 |
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/* Same stuff for the Lucent/Agere card.
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* Thanks to h1kari <h1kari AT dachb0den.com> - Jean II */
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struct agere_scan_apinfo {
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__le16 channel; /* Channel where the AP sits */
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__le16 noise; /* Noise level */
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__le16 level; /* Signal level */
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u8 bssid[ETH_ALEN]; /* MAC address of the Access Point */
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__le16 beacon_interv; /* Beacon interval */
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__le16 capabilities; /* Capabilities */
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/* bits: 0-ess, 1-ibss, 4-privacy [wep] */
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__le16 essid_len; /* ESSID length */
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u8 essid[32]; /* ESSID of the network */
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| 279 |
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} __attribute__ ((packed));
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| 280 |
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| 281 |
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/* Moustafa: Scan structure for Symbol cards */
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struct symbol_scan_apinfo {
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u8 channel; /* Channel where the AP sits */
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u8 unknown1; /* 8 in 2.9x and 3.9x f/w, 0 otherwise */
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__le16 noise; /* Noise level */
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__le16 level; /* Signal level */
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| 287 |
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u8 bssid[ETH_ALEN]; /* MAC address of the Access Point */
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| 288 |
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__le16 beacon_interv; /* Beacon interval */
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| 289 |
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__le16 capabilities; /* Capabilities */
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| 290 |
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/* bits: 0-ess, 1-ibss, 4-privacy [wep] */
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| 291 |
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__le16 essid_len; /* ESSID length */
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| 292 |
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u8 essid[32]; /* ESSID of the network */
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| 293 |
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__le16 rates[5]; /* Bit rate supported */
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| 294 |
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__le16 basic_rates; /* Basic rates bitmask */
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| 295 |
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u8 unknown2[6]; /* Always FF:FF:FF:FF:00:00 */
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| 296 |
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u8 unknown3[8]; /* Always 0, appeared in f/w 3.91-68 */
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| 297 |
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} __attribute__ ((packed));
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| 298 |
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| 299 |
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union hermes_scan_info {
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struct agere_scan_apinfo a;
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struct prism2_scan_apinfo p;
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struct symbol_scan_apinfo s;
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};
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| 304 |
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| 305 |
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#define HERMES_LINKSTATUS_NOT_CONNECTED (0x0000)
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| 306 |
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#define HERMES_LINKSTATUS_CONNECTED (0x0001)
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| 307 |
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#define HERMES_LINKSTATUS_DISCONNECTED (0x0002)
|
| 308 |
|
|
#define HERMES_LINKSTATUS_AP_CHANGE (0x0003)
|
| 309 |
|
|
#define HERMES_LINKSTATUS_AP_OUT_OF_RANGE (0x0004)
|
| 310 |
|
|
#define HERMES_LINKSTATUS_AP_IN_RANGE (0x0005)
|
| 311 |
|
|
#define HERMES_LINKSTATUS_ASSOC_FAILED (0x0006)
|
| 312 |
|
|
|
| 313 |
|
|
struct hermes_linkstatus {
|
| 314 |
|
|
__le16 linkstatus; /* Link status */
|
| 315 |
|
|
} __attribute__ ((packed));
|
| 316 |
|
|
|
| 317 |
|
|
struct hermes_response {
|
| 318 |
|
|
u16 status, resp0, resp1, resp2;
|
| 319 |
|
|
};
|
| 320 |
|
|
|
| 321 |
|
|
/* "ID" structure - used for ESSID and station nickname */
|
| 322 |
|
|
struct hermes_idstring {
|
| 323 |
|
|
__le16 len;
|
| 324 |
|
|
__le16 val[16];
|
| 325 |
|
|
} __attribute__ ((packed));
|
| 326 |
|
|
|
| 327 |
|
|
struct hermes_multicast {
|
| 328 |
|
|
u8 addr[HERMES_MAX_MULTICAST][ETH_ALEN];
|
| 329 |
|
|
} __attribute__ ((packed));
|
| 330 |
|
|
|
| 331 |
|
|
/* Timeouts */
|
| 332 |
|
|
#define HERMES_BAP_BUSY_TIMEOUT (10000) /* In iterations of ~1us */
|
| 333 |
|
|
|
| 334 |
|
|
/* Basic control structure */
|
| 335 |
|
|
typedef struct hermes {
|
| 336 |
|
|
void __iomem *iobase;
|
| 337 |
|
|
int reg_spacing;
|
| 338 |
|
|
#define HERMES_16BIT_REGSPACING 0
|
| 339 |
|
|
#define HERMES_32BIT_REGSPACING 1
|
| 340 |
|
|
u16 inten; /* Which interrupts should be enabled? */
|
| 341 |
|
|
} hermes_t;
|
| 342 |
|
|
|
| 343 |
|
|
/* Register access convenience macros */
|
| 344 |
|
|
#define hermes_read_reg(hw, off) \
|
| 345 |
|
|
(ioread16((hw)->iobase + ( (off) << (hw)->reg_spacing )))
|
| 346 |
|
|
#define hermes_write_reg(hw, off, val) \
|
| 347 |
|
|
(iowrite16((val), (hw)->iobase + ((off) << (hw)->reg_spacing)))
|
| 348 |
|
|
#define hermes_read_regn(hw, name) hermes_read_reg((hw), HERMES_##name)
|
| 349 |
|
|
#define hermes_write_regn(hw, name, val) hermes_write_reg((hw), HERMES_##name, (val))
|
| 350 |
|
|
|
| 351 |
|
|
/* Function prototypes */
|
| 352 |
|
|
void hermes_struct_init(hermes_t *hw, void __iomem *address, int reg_spacing);
|
| 353 |
|
|
int hermes_init(hermes_t *hw);
|
| 354 |
|
|
int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
|
| 355 |
|
|
struct hermes_response *resp);
|
| 356 |
|
|
int hermes_allocate(hermes_t *hw, u16 size, u16 *fid);
|
| 357 |
|
|
|
| 358 |
|
|
int hermes_bap_pread(hermes_t *hw, int bap, void *buf, int len,
|
| 359 |
|
|
u16 id, u16 offset);
|
| 360 |
|
|
int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, int len,
|
| 361 |
|
|
u16 id, u16 offset);
|
| 362 |
|
|
int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, unsigned buflen,
|
| 363 |
|
|
u16 *length, void *buf);
|
| 364 |
|
|
int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
|
| 365 |
|
|
u16 length, const void *value);
|
| 366 |
|
|
|
| 367 |
|
|
/* Inline functions */
|
| 368 |
|
|
|
| 369 |
|
|
static inline int hermes_present(hermes_t *hw)
|
| 370 |
|
|
{
|
| 371 |
|
|
return hermes_read_regn(hw, SWSUPPORT0) == HERMES_MAGIC;
|
| 372 |
|
|
}
|
| 373 |
|
|
|
| 374 |
|
|
static inline void hermes_set_irqmask(hermes_t *hw, u16 events)
|
| 375 |
|
|
{
|
| 376 |
|
|
hw->inten = events;
|
| 377 |
|
|
hermes_write_regn(hw, INTEN, events);
|
| 378 |
|
|
}
|
| 379 |
|
|
|
| 380 |
|
|
static inline int hermes_enable_port(hermes_t *hw, int port)
|
| 381 |
|
|
{
|
| 382 |
|
|
return hermes_docmd_wait(hw, HERMES_CMD_ENABLE | (port << 8),
|
| 383 |
|
|
0, NULL);
|
| 384 |
|
|
}
|
| 385 |
|
|
|
| 386 |
|
|
static inline int hermes_disable_port(hermes_t *hw, int port)
|
| 387 |
|
|
{
|
| 388 |
|
|
return hermes_docmd_wait(hw, HERMES_CMD_DISABLE | (port << 8),
|
| 389 |
|
|
0, NULL);
|
| 390 |
|
|
}
|
| 391 |
|
|
|
| 392 |
|
|
/* Initiate an INQUIRE command (tallies or scan). The result will come as an
|
| 393 |
|
|
* information frame in __orinoco_ev_info() */
|
| 394 |
|
|
static inline int hermes_inquire(hermes_t *hw, u16 rid)
|
| 395 |
|
|
{
|
| 396 |
|
|
return hermes_docmd_wait(hw, HERMES_CMD_INQUIRE, rid, NULL);
|
| 397 |
|
|
}
|
| 398 |
|
|
|
| 399 |
|
|
#define HERMES_BYTES_TO_RECLEN(n) ( (((n)+1)/2) + 1 )
|
| 400 |
|
|
#define HERMES_RECLEN_TO_BYTES(n) ( ((n)-1) * 2 )
|
| 401 |
|
|
|
| 402 |
|
|
/* Note that for the next two, the count is in 16-bit words, not bytes */
|
| 403 |
|
|
static inline void hermes_read_words(struct hermes *hw, int off, void *buf, unsigned count)
|
| 404 |
|
|
{
|
| 405 |
|
|
off = off << hw->reg_spacing;
|
| 406 |
|
|
ioread16_rep(hw->iobase + off, buf, count);
|
| 407 |
|
|
}
|
| 408 |
|
|
|
| 409 |
|
|
static inline void hermes_write_bytes(struct hermes *hw, int off,
|
| 410 |
|
|
const char *buf, unsigned count)
|
| 411 |
|
|
{
|
| 412 |
|
|
off = off << hw->reg_spacing;
|
| 413 |
|
|
iowrite16_rep(hw->iobase + off, buf, count >> 1);
|
| 414 |
|
|
if (unlikely(count & 1))
|
| 415 |
|
|
iowrite8(buf[count - 1], hw->iobase + off);
|
| 416 |
|
|
}
|
| 417 |
|
|
|
| 418 |
|
|
static inline void hermes_clear_words(struct hermes *hw, int off, unsigned count)
|
| 419 |
|
|
{
|
| 420 |
|
|
unsigned i;
|
| 421 |
|
|
|
| 422 |
|
|
off = off << hw->reg_spacing;
|
| 423 |
|
|
|
| 424 |
|
|
for (i = 0; i < count; i++)
|
| 425 |
|
|
iowrite16(0, hw->iobase + off);
|
| 426 |
|
|
}
|
| 427 |
|
|
|
| 428 |
|
|
#define HERMES_READ_RECORD(hw, bap, rid, buf) \
|
| 429 |
|
|
(hermes_read_ltv((hw),(bap),(rid), sizeof(*buf), NULL, (buf)))
|
| 430 |
|
|
#define HERMES_WRITE_RECORD(hw, bap, rid, buf) \
|
| 431 |
|
|
(hermes_write_ltv((hw),(bap),(rid),HERMES_BYTES_TO_RECLEN(sizeof(*buf)),(buf)))
|
| 432 |
|
|
|
| 433 |
|
|
static inline int hermes_read_wordrec(hermes_t *hw, int bap, u16 rid, u16 *word)
|
| 434 |
|
|
{
|
| 435 |
|
|
__le16 rec;
|
| 436 |
|
|
int err;
|
| 437 |
|
|
|
| 438 |
|
|
err = HERMES_READ_RECORD(hw, bap, rid, &rec);
|
| 439 |
|
|
*word = le16_to_cpu(rec);
|
| 440 |
|
|
return err;
|
| 441 |
|
|
}
|
| 442 |
|
|
|
| 443 |
|
|
static inline int hermes_write_wordrec(hermes_t *hw, int bap, u16 rid, u16 word)
|
| 444 |
|
|
{
|
| 445 |
|
|
__le16 rec = cpu_to_le16(word);
|
| 446 |
|
|
return HERMES_WRITE_RECORD(hw, bap, rid, &rec);
|
| 447 |
|
|
}
|
| 448 |
|
|
|
| 449 |
|
|
#endif /* _HERMES_H */
|
