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534 lines
16 KiB
534 lines
16 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* 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. |
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* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. |
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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 structure, and to the hardware |
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*/ |
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#include <linux/if_ether.h> |
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#include <linux/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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|
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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_TXCNTL2_OFFSET (HERMES_802_3_OFFSET - 2) |
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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_MIC (0x0010) /* Frame contains MIC */ |
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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_MIC_KEY_ID (0x1800) /* MIC key used */ |
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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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/* Shift amount for key ID in RXSTAT and TXCTRL */ |
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#define HERMES_MIC_KEY_ID_SHIFT 11 |
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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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} __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_MIC (0x0010) /* 802.3 + TKIP */ |
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#define HERMES_TXCTRL_MIC_KEY_ID (0x1800) /* MIC Key ID mask */ |
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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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} __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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} __packed; |
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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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} __packed; |
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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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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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__le16 rates[5]; /* Bit rate supported */ |
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__le16 basic_rates; /* Basic rates bitmask */ |
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u8 unknown2[6]; /* Always FF:FF:FF:FF:00:00 */ |
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u8 unknown3[8]; /* Always 0, appeared in f/w 3.91-68 */ |
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} __packed; |
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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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/* Extended scan struct for HERMES_INQ_CHANNELINFO. |
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* wl_lkm calls this an ACS scan (Automatic Channel Select). |
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* Keep out of union hermes_scan_info because it is much bigger than |
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* the older scan structures. */ |
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struct agere_ext_scan_info { |
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__le16 reserved0; |
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u8 noise; |
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u8 level; |
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u8 rx_flow; |
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u8 rate; |
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__le16 reserved1[2]; |
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__le16 frame_control; |
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__le16 dur_id; |
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u8 addr1[ETH_ALEN]; |
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u8 addr2[ETH_ALEN]; |
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u8 bssid[ETH_ALEN]; |
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__le16 sequence; |
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u8 addr4[ETH_ALEN]; |
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__le16 data_length; |
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/* Next 3 fields do not get filled in. */ |
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u8 daddr[ETH_ALEN]; |
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u8 saddr[ETH_ALEN]; |
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__le16 len_type; |
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__le64 timestamp; |
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__le16 beacon_interval; |
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__le16 capabilities; |
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u8 data[]; |
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} __packed; |
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#define HERMES_LINKSTATUS_NOT_CONNECTED (0x0000) |
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#define HERMES_LINKSTATUS_CONNECTED (0x0001) |
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#define HERMES_LINKSTATUS_DISCONNECTED (0x0002) |
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#define HERMES_LINKSTATUS_AP_CHANGE (0x0003) |
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#define HERMES_LINKSTATUS_AP_OUT_OF_RANGE (0x0004) |
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#define HERMES_LINKSTATUS_AP_IN_RANGE (0x0005) |
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#define HERMES_LINKSTATUS_ASSOC_FAILED (0x0006) |
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struct hermes_linkstatus { |
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__le16 linkstatus; /* Link status */ |
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} __packed; |
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struct hermes_response { |
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u16 status, resp0, resp1, resp2; |
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}; |
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/* "ID" structure - used for ESSID and station nickname */ |
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struct hermes_idstring { |
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__le16 len; |
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__le16 val[16]; |
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} __packed; |
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struct hermes_multicast { |
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u8 addr[HERMES_MAX_MULTICAST][ETH_ALEN]; |
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} __packed; |
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/* Timeouts */ |
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#define HERMES_BAP_BUSY_TIMEOUT (10000) /* In iterations of ~1us */ |
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struct hermes; |
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/* Functions to access hardware */ |
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struct hermes_ops { |
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int (*init)(struct hermes *hw); |
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int (*cmd_wait)(struct hermes *hw, u16 cmd, u16 parm0, |
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struct hermes_response *resp); |
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int (*init_cmd_wait)(struct hermes *hw, u16 cmd, |
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u16 parm0, u16 parm1, u16 parm2, |
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struct hermes_response *resp); |
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int (*allocate)(struct hermes *hw, u16 size, u16 *fid); |
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int (*read_ltv)(struct hermes *hw, int bap, u16 rid, unsigned buflen, |
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u16 *length, void *buf); |
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int (*read_ltv_pr)(struct hermes *hw, int bap, u16 rid, |
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unsigned buflen, u16 *length, void *buf); |
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int (*write_ltv)(struct hermes *hw, int bap, u16 rid, |
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u16 length, const void *value); |
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int (*bap_pread)(struct hermes *hw, int bap, void *buf, int len, |
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u16 id, u16 offset); |
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int (*bap_pwrite)(struct hermes *hw, int bap, const void *buf, |
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int len, u16 id, u16 offset); |
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int (*read_pda)(struct hermes *hw, __le16 *pda, |
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u32 pda_addr, u16 pda_len); |
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int (*program_init)(struct hermes *hw, u32 entry_point); |
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int (*program_end)(struct hermes *hw); |
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int (*program)(struct hermes *hw, const char *buf, |
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u32 addr, u32 len); |
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void (*lock_irqsave)(spinlock_t *lock, unsigned long *flags); |
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void (*unlock_irqrestore)(spinlock_t *lock, unsigned long *flags); |
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void (*lock_irq)(spinlock_t *lock); |
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void (*unlock_irq)(spinlock_t *lock); |
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}; |
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/* Basic control structure */ |
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struct hermes { |
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void __iomem *iobase; |
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int reg_spacing; |
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#define HERMES_16BIT_REGSPACING 0 |
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#define HERMES_32BIT_REGSPACING 1 |
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u16 inten; /* Which interrupts should be enabled? */ |
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bool eeprom_pda; |
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const struct hermes_ops *ops; |
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void *priv; |
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}; |
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/* Register access convenience macros */ |
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#define hermes_read_reg(hw, off) \ |
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(ioread16((hw)->iobase + ((off) << (hw)->reg_spacing))) |
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#define hermes_write_reg(hw, off, val) \ |
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(iowrite16((val), (hw)->iobase + ((off) << (hw)->reg_spacing))) |
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#define hermes_read_regn(hw, name) hermes_read_reg((hw), HERMES_##name) |
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#define hermes_write_regn(hw, name, val) \ |
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hermes_write_reg((hw), HERMES_##name, (val)) |
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|
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/* Function prototypes */ |
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void hermes_struct_init(struct hermes *hw, void __iomem *address, |
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int reg_spacing); |
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|
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/* Inline functions */ |
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static inline int hermes_present(struct hermes *hw) |
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{ |
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return hermes_read_regn(hw, SWSUPPORT0) == HERMES_MAGIC; |
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} |
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static inline void hermes_set_irqmask(struct hermes *hw, u16 events) |
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{ |
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hw->inten = events; |
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hermes_write_regn(hw, INTEN, events); |
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} |
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static inline int hermes_enable_port(struct hermes *hw, int port) |
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{ |
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return hw->ops->cmd_wait(hw, HERMES_CMD_ENABLE | (port << 8), |
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0, NULL); |
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} |
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static inline int hermes_disable_port(struct hermes *hw, int port) |
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{ |
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return hw->ops->cmd_wait(hw, HERMES_CMD_DISABLE | (port << 8), |
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0, NULL); |
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} |
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/* Initiate an INQUIRE command (tallies or scan). The result will come as an |
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* information frame in __orinoco_ev_info() */ |
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static inline int hermes_inquire(struct hermes *hw, u16 rid) |
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{ |
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return hw->ops->cmd_wait(hw, HERMES_CMD_INQUIRE, rid, NULL); |
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} |
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#define HERMES_BYTES_TO_RECLEN(n) ((((n) + 1) / 2) + 1) |
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#define HERMES_RECLEN_TO_BYTES(n) (((n) - 1) * 2) |
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|
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/* Note that for the next two, the count is in 16-bit words, not bytes */ |
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static inline void hermes_read_words(struct hermes *hw, int off, |
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void *buf, unsigned count) |
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{ |
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off = off << hw->reg_spacing; |
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ioread16_rep(hw->iobase + off, buf, count); |
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} |
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static inline void hermes_write_bytes(struct hermes *hw, int off, |
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const char *buf, unsigned count) |
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{ |
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off = off << hw->reg_spacing; |
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iowrite16_rep(hw->iobase + off, buf, count >> 1); |
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if (unlikely(count & 1)) |
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iowrite8(buf[count - 1], hw->iobase + off); |
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} |
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static inline void hermes_clear_words(struct hermes *hw, int off, |
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unsigned count) |
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{ |
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unsigned i; |
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off = off << hw->reg_spacing; |
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for (i = 0; i < count; i++) |
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iowrite16(0, hw->iobase + off); |
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} |
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|
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#define HERMES_READ_RECORD(hw, bap, rid, buf) \ |
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(hw->ops->read_ltv((hw), (bap), (rid), sizeof(*buf), NULL, (buf))) |
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#define HERMES_READ_RECORD_PR(hw, bap, rid, buf) \ |
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(hw->ops->read_ltv_pr((hw), (bap), (rid), sizeof(*buf), NULL, (buf))) |
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#define HERMES_WRITE_RECORD(hw, bap, rid, buf) \ |
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(hw->ops->write_ltv((hw), (bap), (rid), \ |
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HERMES_BYTES_TO_RECLEN(sizeof(*buf)), (buf))) |
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|
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static inline int hermes_read_wordrec(struct hermes *hw, int bap, u16 rid, |
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u16 *word) |
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{ |
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__le16 rec; |
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int err; |
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|
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err = HERMES_READ_RECORD(hw, bap, rid, &rec); |
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*word = le16_to_cpu(rec); |
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return err; |
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} |
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|
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static inline int hermes_read_wordrec_pr(struct hermes *hw, int bap, u16 rid, |
|
u16 *word) |
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{ |
|
__le16 rec; |
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int err; |
|
|
|
err = HERMES_READ_RECORD_PR(hw, bap, rid, &rec); |
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*word = le16_to_cpu(rec); |
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return err; |
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} |
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|
|
static inline int hermes_write_wordrec(struct hermes *hw, int bap, u16 rid, |
|
u16 word) |
|
{ |
|
__le16 rec = cpu_to_le16(word); |
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return HERMES_WRITE_RECORD(hw, bap, rid, &rec); |
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} |
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|
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#endif /* _HERMES_H */
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