hermes.h
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上传日期:2013-04-10
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- /* hermes.h
- *
- * Driver core for the "Hermes" wireless MAC controller, as used in
- * the Lucent Orinoco and Cabletron RoamAbout cards. It should also
- * work on the hfa3841 and hfa3842 MAC controller chips used in the
- * Prism I & II chipsets.
- *
- * This is not a complete driver, just low-level access routines for
- * the MAC controller itself.
- *
- * Based on the prism2 driver from Absolute Value Systems' linux-wlan
- * project, the Linux wvlan_cs driver, Lucent's HCF-Light
- * (wvlan_hcf.c) library, and the NetBSD wireless driver.
- *
- * Copyright (C) 2000, David Gibson, Linuxcare Australia <hermes@gibson.dropbear.id.au>
- *
- * Portions taken from hfa384x.h, Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
- *
- * This file distributed under the GPL, version 2.
- */
- #ifndef _HERMES_H
- #define _HERMES_H
- /* Notes on locking:
- *
- * As a module of low level hardware access routines, there is no
- * locking. Users of this module should ensure that they serialize
- * access to the hermes_t structure, and to the hardware
- */
- #include <linux/delay.h>
- #include <linux/if_ether.h>
- #include <asm/byteorder.h>
- /*
- * Limits and constants
- */
- #define HERMES_ALLOC_LEN_MIN (4)
- #define HERMES_ALLOC_LEN_MAX (2400)
- #define HERMES_LTV_LEN_MAX (34)
- #define HERMES_BAP_DATALEN_MAX (4096)
- #define HERMES_BAP_OFFSET_MAX (4096)
- #define HERMES_PORTID_MAX (7)
- #define HERMES_NUMPORTS_MAX (HERMES_PORTID_MAX+1)
- #define HERMES_PDR_LEN_MAX (260) /* in bytes, from EK */
- #define HERMES_PDA_RECS_MAX (200) /* a guess */
- #define HERMES_PDA_LEN_MAX (1024) /* in bytes, from EK */
- #define HERMES_SCANRESULT_MAX (35)
- #define HERMES_CHINFORESULT_MAX (8)
- #define HERMES_MAX_MULTICAST (16)
- #define HERMES_MAGIC (0x7d1f)
- /*
- * Hermes register offsets
- */
- #define HERMES_CMD (0x00)
- #define HERMES_PARAM0 (0x02)
- #define HERMES_PARAM1 (0x04)
- #define HERMES_PARAM2 (0x06)
- #define HERMES_STATUS (0x08)
- #define HERMES_RESP0 (0x0A)
- #define HERMES_RESP1 (0x0C)
- #define HERMES_RESP2 (0x0E)
- #define HERMES_INFOFID (0x10)
- #define HERMES_RXFID (0x20)
- #define HERMES_ALLOCFID (0x22)
- #define HERMES_TXCOMPLFID (0x24)
- #define HERMES_SELECT0 (0x18)
- #define HERMES_OFFSET0 (0x1C)
- #define HERMES_DATA0 (0x36)
- #define HERMES_SELECT1 (0x1A)
- #define HERMES_OFFSET1 (0x1E)
- #define HERMES_DATA1 (0x38)
- #define HERMES_EVSTAT (0x30)
- #define HERMES_INTEN (0x32)
- #define HERMES_EVACK (0x34)
- #define HERMES_CONTROL (0x14)
- #define HERMES_SWSUPPORT0 (0x28)
- #define HERMES_SWSUPPORT1 (0x2A)
- #define HERMES_SWSUPPORT2 (0x2C)
- #define HERMES_AUXPAGE (0x3A)
- #define HERMES_AUXOFFSET (0x3C)
- #define HERMES_AUXDATA (0x3E)
- /*
- * CMD register bitmasks
- */
- #define HERMES_CMD_BUSY (0x8000)
- #define HERMES_CMD_AINFO (0x7f00)
- #define HERMES_CMD_MACPORT (0x0700)
- #define HERMES_CMD_RECL (0x0100)
- #define HERMES_CMD_WRITE (0x0100)
- #define HERMES_CMD_PROGMODE (0x0300)
- #define HERMES_CMD_CMDCODE (0x003f)
- /*
- * STATUS register bitmasks
- */
- #define HERMES_STATUS_RESULT (0x7f00)
- #define HERMES_STATUS_CMDCODE (0x003f)
- /*
- * OFFSET register bitmasks
- */
- #define HERMES_OFFSET_BUSY (0x8000)
- #define HERMES_OFFSET_ERR (0x4000)
- #define HERMES_OFFSET_DATAOFF (0x0ffe)
- /*
- * Event register bitmasks (INTEN, EVSTAT, EVACK)
- */
- #define HERMES_EV_TICK (0x8000)
- #define HERMES_EV_WTERR (0x4000)
- #define HERMES_EV_INFDROP (0x2000)
- #define HERMES_EV_INFO (0x0080)
- #define HERMES_EV_DTIM (0x0020)
- #define HERMES_EV_CMD (0x0010)
- #define HERMES_EV_ALLOC (0x0008)
- #define HERMES_EV_TXEXC (0x0004)
- #define HERMES_EV_TX (0x0002)
- #define HERMES_EV_RX (0x0001)
- /*
- * Command codes
- */
- /*--- Controller Commands --------------------------*/
- #define HERMES_CMD_INIT (0x0000)
- #define HERMES_CMD_ENABLE (0x0001)
- #define HERMES_CMD_DISABLE (0x0002)
- #define HERMES_CMD_DIAG (0x0003)
- /*--- Buffer Mgmt Commands --------------------------*/
- #define HERMES_CMD_ALLOC (0x000A)
- #define HERMES_CMD_TX (0x000B)
- #define HERMES_CMD_CLRPRST (0x0012)
- /*--- Regulate Commands --------------------------*/
- #define HERMES_CMD_NOTIFY (0x0010)
- #define HERMES_CMD_INQUIRE (0x0011)
- /*--- Configure Commands --------------------------*/
- #define HERMES_CMD_ACCESS (0x0021)
- #define HERMES_CMD_DOWNLD (0x0022)
- /*--- Debugging Commands -----------------------------*/
- #define HERMES_CMD_MONITOR (0x0038)
- #define HERMES_MONITOR_ENABLE (0x000b)
- #define HERMES_MONITOR_DISABLE (0x000f)
- /*
- * Frame structures and constants
- */
- #define HERMES_DESCRIPTOR_OFFSET 0
- #define HERMES_802_11_OFFSET (14)
- #define HERMES_802_3_OFFSET (14+32)
- #define HERMES_802_2_OFFSET (14+32+14)
- struct hermes_rx_descriptor {
- u16 status;
- u32 time;
- u8 silence;
- u8 signal;
- u8 rate;
- u8 rxflow;
- u32 reserved;
- } __attribute__ ((packed));
- #define HERMES_RXSTAT_ERR (0x0003)
- #define HERMES_RXSTAT_BADCRC (0x0001)
- #define HERMES_RXSTAT_UNDECRYPTABLE (0x0002)
- #define HERMES_RXSTAT_MACPORT (0x0700)
- #define HERMES_RXSTAT_MSGTYPE (0xE000)
- #define HERMES_RXSTAT_1042 (0x2000) /* RFC-1042 frame */
- #define HERMES_RXSTAT_TUNNEL (0x4000) /* bridge-tunnel encoded frame */
- #define HERMES_RXSTAT_WMP (0x6000) /* Wavelan-II Management Protocol frame */
- struct hermes_tx_descriptor {
- u16 status;
- u16 reserved1;
- u16 reserved2;
- u32 sw_support;
- u8 retry_count;
- u8 tx_rate;
- u16 tx_control;
- } __attribute__ ((packed));
- #define HERMES_TXSTAT_RETRYERR (0x0001)
- #define HERMES_TXSTAT_AGEDERR (0x0002)
- #define HERMES_TXSTAT_DISCON (0x0004)
- #define HERMES_TXSTAT_FORMERR (0x0008)
- #define HERMES_TXCTRL_TX_OK (0x0002) /* ?? interrupt on Tx complete */
- #define HERMES_TXCTRL_TX_EX (0x0004) /* ?? interrupt on Tx exception */
- #define HERMES_TXCTRL_802_11 (0x0008) /* We supply 802.11 header */
- #define HERMES_TXCTRL_ALT_RTRY (0x0020)
- /* Inquiry constants and data types */
- #define HERMES_INQ_TALLIES (0xF100)
- #define HERMES_INQ_SCAN (0xF101)
- #define HERMES_INQ_LINKSTATUS (0xF200)
- struct hermes_tallies_frame {
- u16 TxUnicastFrames;
- u16 TxMulticastFrames;
- u16 TxFragments;
- u16 TxUnicastOctets;
- u16 TxMulticastOctets;
- u16 TxDeferredTransmissions;
- u16 TxSingleRetryFrames;
- u16 TxMultipleRetryFrames;
- u16 TxRetryLimitExceeded;
- u16 TxDiscards;
- u16 RxUnicastFrames;
- u16 RxMulticastFrames;
- u16 RxFragments;
- u16 RxUnicastOctets;
- u16 RxMulticastOctets;
- u16 RxFCSErrors;
- u16 RxDiscards_NoBuffer;
- u16 TxDiscardsWrongSA;
- u16 RxWEPUndecryptable;
- u16 RxMsgInMsgFragments;
- u16 RxMsgInBadMsgFragments;
- /* Those last are probably not available in very old firmwares */
- u16 RxDiscards_WEPICVError;
- u16 RxDiscards_WEPExcluded;
- } __attribute__ ((packed));
- /* Grabbed from wlan-ng - Thanks Mark... - Jean II
- * This is the result of a scan inquiry command */
- /* Structure describing info about an Access Point */
- struct hermes_scan_apinfo {
- u16 channel; /* Channel where the AP sits */
- u16 noise; /* Noise level */
- u16 level; /* Signal level */
- u8 bssid[ETH_ALEN]; /* MAC address of the Access Point */
- u16 beacon_interv; /* Beacon interval ? */
- u16 capabilities; /* Capabilities ? */
- u8 essid[32]; /* ESSID of the network */
- u8 rates[10]; /* Bit rate supported */
- u16 proberesp_rate; /* ???? */
- } __attribute__ ((packed));
- /* Container */
- struct hermes_scan_frame {
- u16 rsvd; /* ??? */
- u16 scanreason; /* ??? */
- struct hermes_scan_apinfo aps[35]; /* Scan result */
- } __attribute__ ((packed));
- // #define HERMES_DEBUG_BUFFER 1
- #define HERMES_DEBUG_BUFSIZE 4096
- struct hermes_debug_entry {
- int bap;
- u16 id, offset;
- int cycles;
- };
- #ifdef __KERNEL__
- /* Timeouts */
- #define HERMES_BAP_BUSY_TIMEOUT (500) /* In iterations of ~1us */
- /* Basic control structure */
- typedef struct hermes {
- ulong iobase;
- int io_space; /* 1 if we IO-mapped IO, 0 for memory-mapped IO? */
- #define HERMES_IO 1
- #define HERMES_MEM 0
- int reg_spacing;
- #define HERMES_16BIT_REGSPACING 0
- #define HERMES_32BIT_REGSPACING 1
- u16 inten; /* Which interrupts should be enabled? */
- #ifdef HERMES_DEBUG_BUFFER
- struct hermes_debug_entry dbuf[HERMES_DEBUG_BUFSIZE];
- unsigned long dbufp;
- unsigned long profile[HERMES_BAP_BUSY_TIMEOUT+1];
- #endif
- } hermes_t;
- typedef struct hermes_response {
- u16 status, resp0, resp1, resp2;
- } hermes_response_t;
- /* Register access convenience macros */
- #define hermes_read_reg(hw, off) ((hw)->io_space ?
- inw((hw)->iobase + ( (off) << (hw)->reg_spacing )) :
- readw((hw)->iobase + ( (off) << (hw)->reg_spacing )))
- #define hermes_write_reg(hw, off, val) ((hw)->io_space ?
- outw_p((val), (hw)->iobase + ( (off) << (hw)->reg_spacing )) :
- writew((val), (hw)->iobase + ( (off) << (hw)->reg_spacing )))
- #define hermes_read_regn(hw, name) (hermes_read_reg((hw), HERMES_##name))
- #define hermes_write_regn(hw, name, val) (hermes_write_reg((hw), HERMES_##name, (val)))
- /* Function prototypes */
- void hermes_struct_init(hermes_t *hw, ulong address, int io_space, int reg_spacing);
- int hermes_reset(hermes_t *hw);
- int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0, hermes_response_t *resp);
- int hermes_allocate(hermes_t *hw, u16 size, u16 *fid);
- int hermes_bap_pread(hermes_t *hw, int bap, void *buf, int len,
- u16 id, u16 offset);
- int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, int len,
- u16 id, u16 offset);
- int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, int buflen,
- u16 *length, void *buf);
- int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
- u16 length, const void *value);
- /* Inline functions */
- static inline int hermes_present(hermes_t *hw)
- {
- return hermes_read_regn(hw, SWSUPPORT0) == HERMES_MAGIC;
- }
- static inline void hermes_enable_interrupt(hermes_t *hw, u16 events)
- {
- hw->inten |= events;
- hermes_write_regn(hw, INTEN, hw->inten);
- }
- static inline void hermes_set_irqmask(hermes_t *hw, u16 events)
- {
- hw->inten = events;
- hermes_write_regn(hw, INTEN, events);
- }
- static inline int hermes_enable_port(hermes_t *hw, int port)
- {
- return hermes_docmd_wait(hw, HERMES_CMD_ENABLE | (port << 8),
- 0, NULL);
- }
- static inline int hermes_disable_port(hermes_t *hw, int port)
- {
- return hermes_docmd_wait(hw, HERMES_CMD_DISABLE | (port << 8),
- 0, NULL);
- }
- /* Initiate an INQUIRE command (tallies or scan). The result will come as an
- * information frame in __orinoco_ev_info() */
- static inline int hermes_inquire(hermes_t *hw, u16 rid)
- {
- return hermes_docmd_wait(hw, HERMES_CMD_INQUIRE, rid, NULL);
- }
- #define HERMES_BYTES_TO_RECLEN(n) ( ((n) % 2) ? (((n)+1)/2)+1 : ((n)/2)+1 )
- #define HERMES_RECLEN_TO_BYTES(n) ( ((n)-1) * 2 )
- /* Note that for the next two, the count is in 16-bit words, not bytes */
- static inline void hermes_read_words(struct hermes *hw, int off, void *buf, int count)
- {
- off = off << hw->reg_spacing;;
- if (hw->io_space) {
- insw(hw->iobase + off, buf, count);
- } else {
- int i;
- u16 *p;
- /* This need to *not* byteswap (like insw()) but
- * readw() does byteswap hence the conversion */
- for (i = 0, p = buf; i < count; i++) {
- *p++ = cpu_to_le16(readw(hw->iobase + off));
- }
- }
- }
- static inline void hermes_write_words(struct hermes *hw, int off, const void *buf, int count)
- {
- off = off << hw->reg_spacing;;
- if (hw->io_space) {
- outsw(hw->iobase + off, buf, count);
- } else {
- int i;
- const u16 *p;
- /* This need to *not* byteswap (like outsw()) but
- * writew() does byteswap hence the conversion */
- for (i = 0, p = buf; i < count; i++) {
- writew(le16_to_cpu(*p++), hw->iobase + off);
- }
- }
- }
- #define HERMES_READ_RECORD(hw, bap, rid, buf)
- (hermes_read_ltv((hw),(bap),(rid), sizeof(*buf), NULL, (buf)))
- #define HERMES_WRITE_RECORD(hw, bap, rid, buf)
- (hermes_write_ltv((hw),(bap),(rid),HERMES_BYTES_TO_RECLEN(sizeof(*buf)),(buf)))
- static inline int hermes_read_wordrec(hermes_t *hw, int bap, u16 rid, u16 *word)
- {
- u16 rec;
- int err;
- err = HERMES_READ_RECORD(hw, bap, rid, &rec);
- *word = le16_to_cpu(rec);
- return err;
- }
- static inline int hermes_write_wordrec(hermes_t *hw, int bap, u16 rid, u16 word)
- {
- u16 rec = cpu_to_le16(word);
- return HERMES_WRITE_RECORD(hw, bap, rid, &rec);
- }
- #else /* ! __KERNEL__ */
- /* These are provided for the benefit of userspace drivers and testing programs
- which use ioperm() or iopl() */
- #define hermes_read_reg(base, off) (inw((base) + (off)))
- #define hermes_write_reg(base, off, val) (outw((val), (base) + (off)))
- #define hermes_read_regn(base, name) (hermes_read_reg((base), HERMES_##name))
- #define hermes_write_regn(base, name, val) (hermes_write_reg((base), HERMES_##name, (val)))
- /* Note that for the next two, the count is in 16-bit words, not bytes */
- #define hermes_read_data(base, off, buf, count) (insw((base) + (off), (buf), (count)))
- #define hermes_write_data(base, off, buf, count) (outsw((base) + (off), (buf), (count)))
- #endif /* ! __KERNEL__ */
- #endif /* _HERMES_H */