Merge branch 'linus' into perfcounters/core

Conflicts:
	fs/exec.c
	include/linux/init_task.h

Simple context conflicts.

1 files changed, 494 insertions, 0 deletions

diff --git a/drivers/net/wireless/orinoco/hermes.h b/drivers/net/wireless/orinoco/hermes.h
new file mode 100644
index 000000000000..8b13c8fef3dc
--- /dev/null
+++ b/drivers/net/wireless/orinoco/hermes.h
@@ -0,0 +1,494 @@
+/* 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.
+ * (C) Copyright David Gibson, IBM Corp. 2001-2003.
+ *
+ * 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/if_ether.h>
+#include <asm/io.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)
+
+/*--- Regulate Commands ------------------------------*/
+#define		HERMES_CMD_NOTIFY		(0x0010)
+#define		HERMES_CMD_INQUIRE		(0x0011)
+
+/*--- Configure Commands -----------------------------*/
+#define		HERMES_CMD_ACCESS		(0x0021)
+#define		HERMES_CMD_DOWNLD		(0x0022)
+
+/*--- Serial I/O Commands ----------------------------*/
+#define		HERMES_CMD_READMIF		(0x0030)
+#define		HERMES_CMD_WRITEMIF		(0x0031)
+
+/*--- Debugging Commands -----------------------------*/
+#define 	HERMES_CMD_TEST			(0x0038)
+
+
+/* Test command arguments */
+#define		HERMES_TEST_SET_CHANNEL		0x0800
+#define		HERMES_TEST_MONITOR		0x0b00
+#define		HERMES_TEST_STOP		0x0f00
+
+/* Authentication algorithms */
+#define		HERMES_AUTH_OPEN		1
+#define		HERMES_AUTH_SHARED_KEY		2
+
+/* WEP settings */
+#define		HERMES_WEP_PRIVACY_INVOKED	0x0001
+#define		HERMES_WEP_EXCL_UNENCRYPTED	0x0002
+#define		HERMES_WEP_HOST_ENCRYPT		0x0010
+#define		HERMES_WEP_HOST_DECRYPT		0x0080
+
+/* Symbol hostscan options */
+#define		HERMES_HOSTSCAN_SYMBOL_5SEC	0x0001
+#define		HERMES_HOSTSCAN_SYMBOL_ONCE	0x0002
+#define		HERMES_HOSTSCAN_SYMBOL_PASSIVE	0x0040
+#define		HERMES_HOSTSCAN_SYMBOL_BCAST	0x0080
+
+/*
+ * 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)
+#define HERMES_TXCNTL2_OFFSET		(HERMES_802_3_OFFSET - 2)
+
+#define HERMES_RXSTAT_ERR		(0x0003)
+#define	HERMES_RXSTAT_BADCRC		(0x0001)
+#define	HERMES_RXSTAT_UNDECRYPTABLE	(0x0002)
+#define	HERMES_RXSTAT_MIC		(0x0010)	/* Frame contains MIC */
+#define	HERMES_RXSTAT_MACPORT		(0x0700)
+#define HERMES_RXSTAT_PCF		(0x1000)	/* Frame was received in CF period */
+#define	HERMES_RXSTAT_MIC_KEY_ID	(0x1800)	/* MIC key used */
+#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 */
+
+/* Shift amount for key ID in RXSTAT and TXCTRL */
+#define	HERMES_MIC_KEY_ID_SHIFT		11
+
+struct hermes_tx_descriptor {
+	__le16 status;
+	__le16 reserved1;
+	__le16 reserved2;
+	__le32 sw_support;
+	u8 retry_count;
+	u8 tx_rate;
+	__le16 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_MIC		(0x0010)	/* 802.3 + TKIP */
+#define HERMES_TXCTRL_MIC_KEY_ID	(0x1800)	/* MIC Key ID mask */
+#define HERMES_TXCTRL_ALT_RTRY		(0x0020)
+
+/* Inquiry constants and data types */
+
+#define HERMES_INQ_TALLIES		(0xF100)
+#define HERMES_INQ_SCAN			(0xF101)
+#define HERMES_INQ_CHANNELINFO		(0xF102)
+#define HERMES_INQ_HOSTSCAN		(0xF103)
+#define HERMES_INQ_HOSTSCAN_SYMBOL	(0xF104)
+#define HERMES_INQ_LINKSTATUS		(0xF200)
+#define HERMES_INQ_SEC_STAT_AGERE	(0xF202)
+
+struct hermes_tallies_frame {
+	__le16 TxUnicastFrames;
+	__le16 TxMulticastFrames;
+	__le16 TxFragments;
+	__le16 TxUnicastOctets;
+	__le16 TxMulticastOctets;
+	__le16 TxDeferredTransmissions;
+	__le16 TxSingleRetryFrames;
+	__le16 TxMultipleRetryFrames;
+	__le16 TxRetryLimitExceeded;
+	__le16 TxDiscards;
+	__le16 RxUnicastFrames;
+	__le16 RxMulticastFrames;
+	__le16 RxFragments;
+	__le16 RxUnicastOctets;
+	__le16 RxMulticastOctets;
+	__le16 RxFCSErrors;
+	__le16 RxDiscards_NoBuffer;
+	__le16 TxDiscardsWrongSA;
+	__le16 RxWEPUndecryptable;
+	__le16 RxMsgInMsgFragments;
+	__le16 RxMsgInBadMsgFragments;
+	/* Those last are probably not available in very old firmwares */
+	__le16 RxDiscards_WEPICVError;
+	__le16 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 prism2_scan_apinfo {
+	__le16 channel;		/* Channel where the AP sits */
+	__le16 noise;		/* Noise level */
+	__le16 level;		/* Signal level */
+	u8 bssid[ETH_ALEN];	/* MAC address of the Access Point */
+	__le16 beacon_interv;	/* Beacon interval */
+	__le16 capabilities;	/* Capabilities */
+	__le16 essid_len;	/* ESSID length */
+	u8 essid[32];		/* ESSID of the network */
+	u8 rates[10];		/* Bit rate supported */
+	__le16 proberesp_rate;	/* Data rate of the response frame */
+	__le16 atim;		/* ATIM window time, Kus (hostscan only) */
+} __attribute__ ((packed));
+
+/* Same stuff for the Lucent/Agere card.
+ * Thanks to h1kari <h1kari AT dachb0den.com> - Jean II */
+struct agere_scan_apinfo {
+	__le16 channel;		/* Channel where the AP sits */
+	__le16 noise;		/* Noise level */
+	__le16 level;		/* Signal level */
+	u8 bssid[ETH_ALEN];	/* MAC address of the Access Point */
+	__le16 beacon_interv;	/* Beacon interval */
+	__le16 capabilities;	/* Capabilities */
+	/* bits: 0-ess, 1-ibss, 4-privacy [wep] */
+	__le16 essid_len;	/* ESSID length */
+	u8 essid[32];		/* ESSID of the network */
+} __attribute__ ((packed));
+
+/* Moustafa: Scan structure for Symbol cards */
+struct symbol_scan_apinfo {
+	u8 channel;		/* Channel where the AP sits */
+	u8 unknown1;		/* 8 in 2.9x and 3.9x f/w, 0 otherwise */
+	__le16 noise;		/* Noise level */
+	__le16 level;		/* Signal level */
+	u8 bssid[ETH_ALEN];	/* MAC address of the Access Point */
+	__le16 beacon_interv;	/* Beacon interval */
+	__le16 capabilities;	/* Capabilities */
+	/* bits: 0-ess, 1-ibss, 4-privacy [wep] */
+	__le16 essid_len;	/* ESSID length */
+	u8 essid[32];		/* ESSID of the network */
+    	__le16 rates[5];	/* Bit rate supported */
+	__le16 basic_rates;	/* Basic rates bitmask */
+	u8 unknown2[6];		/* Always FF:FF:FF:FF:00:00 */
+	u8 unknown3[8];		/* Always 0, appeared in f/w 3.91-68 */
+} __attribute__ ((packed));
+
+union hermes_scan_info {
+	struct agere_scan_apinfo	a;
+	struct prism2_scan_apinfo	p;
+	struct symbol_scan_apinfo	s;
+};
+
+/* Extended scan struct for HERMES_INQ_CHANNELINFO.
+ * wl_lkm calls this an ACS scan (Automatic Channel Select).
+ * Keep out of union hermes_scan_info because it is much bigger than
+ * the older scan structures. */
+struct agere_ext_scan_info {
+	__le16	reserved0;
+
+	u8	noise;
+	u8	level;
+	u8	rx_flow;
+	u8	rate;
+	__le16	reserved1[2];
+
+	__le16	frame_control;
+	__le16	dur_id;
+	u8	addr1[ETH_ALEN];
+	u8	addr2[ETH_ALEN];
+	u8	bssid[ETH_ALEN];
+	__le16	sequence;
+	u8	addr4[ETH_ALEN];
+
+	__le16	data_length;
+
+	/* Next 3 fields do not get filled in. */
+	u8	daddr[ETH_ALEN];
+	u8	saddr[ETH_ALEN];
+	__le16	len_type;
+
+	__le64	timestamp;
+	__le16	beacon_interval;
+	__le16	capabilities;
+	u8	data[316];
+} __attribute__ ((packed));
+
+#define HERMES_LINKSTATUS_NOT_CONNECTED   (0x0000)  
+#define HERMES_LINKSTATUS_CONNECTED       (0x0001)
+#define HERMES_LINKSTATUS_DISCONNECTED    (0x0002)
+#define HERMES_LINKSTATUS_AP_CHANGE       (0x0003)
+#define HERMES_LINKSTATUS_AP_OUT_OF_RANGE (0x0004)
+#define HERMES_LINKSTATUS_AP_IN_RANGE     (0x0005)
+#define HERMES_LINKSTATUS_ASSOC_FAILED    (0x0006)
+  
+struct hermes_linkstatus {
+	__le16 linkstatus;         /* Link status */
+} __attribute__ ((packed));
+
+struct hermes_response {
+	u16 status, resp0, resp1, resp2;
+};
+
+/* "ID" structure - used for ESSID and station nickname */
+struct hermes_idstring {
+	__le16 len;
+	__le16 val[16];
+} __attribute__ ((packed));
+
+struct hermes_multicast {
+	u8 addr[HERMES_MAX_MULTICAST][ETH_ALEN];
+} __attribute__ ((packed));
+
+/* Timeouts */
+#define HERMES_BAP_BUSY_TIMEOUT (10000) /* In iterations of ~1us */
+
+/* Basic control structure */
+typedef struct hermes {
+	void __iomem *iobase;
+	int reg_spacing;
+#define HERMES_16BIT_REGSPACING	0
+#define HERMES_32BIT_REGSPACING	1
+	u16 inten; /* Which interrupts should be enabled? */
+} hermes_t;
+
+/* Register access convenience macros */
+#define hermes_read_reg(hw, off) \
+	(ioread16((hw)->iobase + ( (off) << (hw)->reg_spacing )))
+#define hermes_write_reg(hw, off, val) \
+	(iowrite16((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, void __iomem *address, int reg_spacing);
+int hermes_init(hermes_t *hw);
+int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
+		      struct hermes_response *resp);
+int hermes_doicmd_wait(hermes_t *hw, u16 cmd,
+		       u16 parm0, u16 parm1, u16 parm2,
+		       struct hermes_response *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, unsigned 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_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)+1)/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, unsigned count)
+{
+	off = off << hw->reg_spacing;
+	ioread16_rep(hw->iobase + off, buf, count);
+}
+
+static inline void hermes_write_bytes(struct hermes *hw, int off,
+				      const char *buf, unsigned count)
+{
+	off = off << hw->reg_spacing;
+	iowrite16_rep(hw->iobase + off, buf, count >> 1);
+	if (unlikely(count & 1))
+		iowrite8(buf[count - 1], hw->iobase + off);
+}
+
+static inline void hermes_clear_words(struct hermes *hw, int off, unsigned count)
+{
+	unsigned i;
+
+	off = off << hw->reg_spacing;
+
+	for (i = 0; i < count; i++)
+		iowrite16(0, 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)
+{
+	__le16 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)
+{
+	__le16 rec = cpu_to_le16(word);
+	return HERMES_WRITE_RECORD(hw, bap, rid, &rec);
+}
+
+#endif  /* _HERMES_H */