prism2.c File Reference

#include <etherboot.h>
#include <nic.h>
#include <ipxe/pci.h>
#include <ipxe/ethernet.h>
#include "wlan_compat.h"
#include "p80211hdr.h"
#include "hfa384x.h"
#include <errno.h>

Go to the source code of this file.

Data Structures
struct	hfa384x
struct	wlan_llc
struct	wlan_snap
struct	wlan_80211hdr

Macros
#define	MAX_JOIN_INFO_COUNT   2
#define	WLAN_HOSTIF   WLAN_PLX
#define	__LINUX_WLAN__
#define	__I386__
#define	BAP_TIMEOUT   ( 5000 )
#define	__le16_to_cpu(x)   (x)
#define	__le32_to_cpu(x)   (x)
#define	__cpu_to_le16(x)   (x)
#define	__cpu_to_le32(x)   (x)
#define	hfa384x2host_16(n)   (__le16_to_cpu((uint16_t)(n)))
#define	hfa384x2host_32(n)   (__le32_to_cpu((uint32_t)(n)))
#define	host2hfa384x_16(n)   (__cpu_to_le16((uint16_t)(n)))
#define	host2hfa384x_32(n)   (__cpu_to_le32((uint32_t)(n)))
#define	PLX_LOCAL_CONFIG_REGISTER_BASE   ( PCI_BASE_ADDRESS_1 )
#define	PLX_LOCAL_ADDRESS_SPACE_0_BASE   ( PCI_BASE_ADDRESS_2 )
#define	PLX_LOCAL_ADDRESS_SPACE_1_BASE   ( PCI_BASE_ADDRESS_3 )
#define	PLX_LOCAL_ADDRESS_SPACE_2_BASE   ( PCI_BASE_ADDRESS_4 )
#define	PLX_LOCAL_ADDRESS_SPACE_3_BASE   ( PCI_BASE_ADDRESS_5 )
#define	PRISM2_PLX_ATTR_MEM_BASE   ( PLX_LOCAL_ADDRESS_SPACE_0_BASE )
#define	PRISM2_PLX_IO_BASE   ( PLX_LOCAL_ADDRESS_SPACE_1_BASE )
#define	PRISM2_PCI_MEM_BASE   ( PCI_BASE_ADDRESS_0 )
#define	CISTPL_VERS_1   ( 0x15 )
#define	CISTPL_END   ( 0xff )
#define	CIS_STEP   ( 2 )
#define	CISTPL_HEADER_LEN   ( 2 * CIS_STEP )
#define	CISTPL_LEN_OFF   ( 1 * CIS_STEP )
#define	CISTPL_VERS_1_STR_OFF   ( 4 * CIS_STEP )
#define	COR_OFFSET   ( 0x3e0 ) /* COR attribute offset of Prism2 PC card */
#define	COR_VALUE   ( 0x41 ) /* Enable PC card with irq in level trigger (but interrupts disabled) */
#define	WLAN_IEEE_OUI_LEN   3

Typedefs
typedef struct hfa384x	hfa384x_t
typedef struct wlan_llc	wlan_llc_t
typedef struct wlan_snap	wlan_snap_t
typedef struct wlan_80211hdr	wlan_80211hdr_t

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static uint16_t	hfa384x_getreg (hfa384x_t *hw, unsigned int reg)
static void	hfa384x_setreg (hfa384x_t *hw, uint16_t val, unsigned int reg)
static uint16_t	hfa384x_getreg_noswap (hfa384x_t *hw, unsigned int reg)
static void	hfa384x_setreg_noswap (hfa384x_t *hw, uint16_t val, unsigned int reg)
static int	hfa384x_docmd_wait (hfa384x_t *hw, uint16_t cmd, uint16_t parm0, uint16_t parm1, uint16_t parm2)
static int	hfa384x_prepare_bap (hfa384x_t *hw, uint16_t id, uint16_t offset)
static int	hfa384x_copy_from_bap (hfa384x_t *hw, uint16_t id, uint16_t offset, void *buf, unsigned int len)
static int	hfa384x_copy_to_bap (hfa384x_t *hw, uint16_t id, uint16_t offset, void *buf, unsigned int len)
static int	hfa384x_cmd_access (hfa384x_t *hw, uint16_t write, uint16_t rid)
static int	hfa384x_drvr_getconfig (hfa384x_t *hw, uint16_t rid, void *buf, uint16_t len)
static int	hfa384x_drvr_setconfig (hfa384x_t *hw, uint16_t rid, void *buf, uint16_t len)
static int	hfa384x_drvr_setconfig16 (hfa384x_t *hw, uint16_t rid, uint16_t *val)
static int	hfa384x_wait_for_event (hfa384x_t *hw, uint16_t event_mask, uint16_t event_ack, int wait, int timeout, const char *descr)
static int	prism2_poll (struct nic *nic, int retrieve)
static void	prism2_transmit (struct nic *nic, const char *d, unsigned int t, unsigned int s, const char *p)
static void	prism2_disable (struct nic *nic __unused)
static void	prism2_irq (struct nic *nic __unused, irq_action_t action __unused)
static int	prism2_probe (struct nic *nic, hfa384x_t *hw)

Variables
static const char	hardcoded_ssid [] = ""
static hfa384x_t	hw_global
static const wlan_llc_t	wlan_llc_snap = { 0xaa, 0xaa, 0x03 }
static struct nic_operations	prism2_operations

Macro Definition Documentation

MAX_JOIN_INFO_COUNT

#define MAX_JOIN_INFO_COUNT   2

Definition at line 49 of file prism2.c.

WLAN_HOSTIF

#define WLAN_HOSTIF   WLAN_PLX

Definition at line 56 of file prism2.c.

__LINUX_WLAN__

#define __LINUX_WLAN__

Definition at line 64 of file prism2.c.

__I386__

#define __I386__

Definition at line 66 of file prism2.c.

BAP_TIMEOUT

#define BAP_TIMEOUT   ( 5000 )

Definition at line 70 of file prism2.c.

__le16_to_cpu

#define __le16_to_cpu

(

x

)

(x)

Definition at line 77 of file prism2.c.

__le32_to_cpu

#define __le32_to_cpu

(

x

)

(x)

Definition at line 78 of file prism2.c.

__cpu_to_le16

#define __cpu_to_le16

(

x

)

(x)

Definition at line 79 of file prism2.c.

__cpu_to_le32

#define __cpu_to_le32

(

x

)

(x)

Definition at line 80 of file prism2.c.

hfa384x2host_16

#define hfa384x2host_16

(

n

)

(__le16_to_cpu((uint16_t)(n)))

Definition at line 82 of file prism2.c.

hfa384x2host_32

#define hfa384x2host_32

(

n

)

(__le32_to_cpu((uint32_t)(n)))

Definition at line 83 of file prism2.c.

host2hfa384x_16

#define host2hfa384x_16

(

n

)

(__cpu_to_le16((uint16_t)(n)))

Definition at line 84 of file prism2.c.

host2hfa384x_32

#define host2hfa384x_32

(

n

)

(__cpu_to_le32((uint32_t)(n)))

Definition at line 85 of file prism2.c.

PLX_LOCAL_CONFIG_REGISTER_BASE

#define PLX_LOCAL_CONFIG_REGISTER_BASE   ( PCI_BASE_ADDRESS_1 )

Definition at line 92 of file prism2.c.

PLX_LOCAL_ADDRESS_SPACE_0_BASE

#define PLX_LOCAL_ADDRESS_SPACE_0_BASE   ( PCI_BASE_ADDRESS_2 )

Definition at line 93 of file prism2.c.

PLX_LOCAL_ADDRESS_SPACE_1_BASE

#define PLX_LOCAL_ADDRESS_SPACE_1_BASE   ( PCI_BASE_ADDRESS_3 )

Definition at line 94 of file prism2.c.

PLX_LOCAL_ADDRESS_SPACE_2_BASE

#define PLX_LOCAL_ADDRESS_SPACE_2_BASE   ( PCI_BASE_ADDRESS_4 )

Definition at line 95 of file prism2.c.

PLX_LOCAL_ADDRESS_SPACE_3_BASE

#define PLX_LOCAL_ADDRESS_SPACE_3_BASE   ( PCI_BASE_ADDRESS_5 )

Definition at line 96 of file prism2.c.

PRISM2_PLX_ATTR_MEM_BASE

#define PRISM2_PLX_ATTR_MEM_BASE   ( PLX_LOCAL_ADDRESS_SPACE_0_BASE )

Definition at line 98 of file prism2.c.

PRISM2_PLX_IO_BASE

#define PRISM2_PLX_IO_BASE   ( PLX_LOCAL_ADDRESS_SPACE_1_BASE )

Definition at line 99 of file prism2.c.

PRISM2_PCI_MEM_BASE

#define PRISM2_PCI_MEM_BASE   ( PCI_BASE_ADDRESS_0 )

Definition at line 101 of file prism2.c.

CISTPL_VERS_1

#define CISTPL_VERS_1   ( 0x15 )

Definition at line 108 of file prism2.c.

CISTPL_END

#define CISTPL_END   ( 0xff )

Definition at line 109 of file prism2.c.

CIS_STEP

#define CIS_STEP   ( 2 )

Definition at line 111 of file prism2.c.

CISTPL_HEADER_LEN

#define CISTPL_HEADER_LEN   ( 2 * CIS_STEP )

Definition at line 112 of file prism2.c.

CISTPL_LEN_OFF

#define CISTPL_LEN_OFF   ( 1 * CIS_STEP )

Definition at line 113 of file prism2.c.

CISTPL_VERS_1_STR_OFF

#define CISTPL_VERS_1_STR_OFF   ( 4 * CIS_STEP )

Definition at line 114 of file prism2.c.

COR_OFFSET

#define COR_OFFSET   ( 0x3e0 ) /* COR attribute offset of Prism2 PC card */

Definition at line 121 of file prism2.c.

COR_VALUE

#define COR_VALUE   ( 0x41 ) /* Enable PC card with irq in level trigger (but interrupts disabled) */

Definition at line 122 of file prism2.c.

WLAN_IEEE_OUI_LEN

#define WLAN_IEEE_OUI_LEN   3

Definition at line 159 of file prism2.c.

Typedef Documentation

hfa384x_t

typedef struct hfa384x hfa384x_t

wlan_llc_t

typedef struct wlan_llc wlan_llc_t

wlan_snap_t

typedef struct wlan_snap wlan_snap_t

wlan_80211hdr_t

typedef struct wlan_80211hdr wlan_80211hdr_t

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER

)

hfa384x_getreg()

static uint16_t hfa384x_getreg ( hfa384x_t *  hw, unsigned int  reg  )

inlinestatic

Definition at line 183 of file prism2.c.

{
#if (WLAN_HOSTIF == WLAN_PLX)
  return inw ( hw->iobase + reg );
#elif (WLAN_HOSTIF == WLAN_PCI)
  return readw ( hw->membase + reg );
#endif
}

References inw(), readw(), and reg.

Referenced by hfa384x_docmd_wait(), hfa384x_getreg_noswap(), hfa384x_prepare_bap(), hfa384x_wait_for_event(), prism2_poll(), prism2_probe(), and prism2_transmit().

hfa384x_setreg()

static void hfa384x_setreg ( hfa384x_t *  hw, uint16_t  val, unsigned int  reg  )

inlinestatic

Definition at line 193 of file prism2.c.

{
#if (WLAN_HOSTIF == WLAN_PLX)
  outw ( val, hw->iobase + reg );
#elif (WLAN_HOSTIF == WLAN_PCI)
  writew ( val, hw->membase + reg );
#endif
  return;
}

References outw, reg, val, and writew.

Referenced by hfa384x_docmd_wait(), hfa384x_prepare_bap(), hfa384x_setreg_noswap(), hfa384x_wait_for_event(), prism2_poll(), and prism2_probe().

hfa384x_getreg_noswap()

static uint16_t hfa384x_getreg_noswap ( hfa384x_t *  hw, unsigned int  reg  )

inlinestatic

Definition at line 207 of file prism2.c.

{
  return hfa384x_getreg ( hw, reg );
}

References hfa384x_getreg(), and reg.

Referenced by hfa384x_copy_from_bap(), and hfa384x_copy_to_bap().

hfa384x_setreg_noswap()

static void hfa384x_setreg_noswap ( hfa384x_t *  hw, uint16_t  val, unsigned int  reg  )

inlinestatic

Definition at line 211 of file prism2.c.

{
  hfa384x_setreg ( hw, val, reg );
}

References hfa384x_setreg(), reg, and val.

Referenced by hfa384x_copy_to_bap().

hfa384x_docmd_wait()

static int hfa384x_docmd_wait ( hfa384x_t *  hw, uint16_t  cmd, uint16_t  parm0, uint16_t  parm1, uint16_t  parm2  )

static

Definition at line 238 of file prism2.c.

{
  uint16_t reg = 0;
  uint16_t counter = 0;

  /* wait for the busy bit to clear */
  counter = 0;
  reg = hfa384x_getreg(hw, HFA384x_CMD);
  while ( HFA384x_CMD_ISBUSY(reg) && (counter < 10) ) {
    reg = hfa384x_getreg(hw, HFA384x_CMD);
    counter++;
    udelay(10);
  }
  if (HFA384x_CMD_ISBUSY(reg)) {
    printf("hfa384x_cmd timeout(1), reg=0x%0hx.\n", reg);
    return -ETIMEDOUT;
  }

  /* busy bit clear, write command */
  hfa384x_setreg(hw, parm0, HFA384x_PARAM0);
  hfa384x_setreg(hw, parm1, HFA384x_PARAM1);
  hfa384x_setreg(hw, parm2, HFA384x_PARAM2);
  hw->lastcmd = cmd;
  hfa384x_setreg(hw, cmd, HFA384x_CMD);

  /* Now wait for completion */
  counter = 0;
  reg = hfa384x_getreg(hw, HFA384x_EVSTAT);
  /* Initialization is the problem.  It takes about
     100ms. "normal" commands are typically is about
     200-400 us (I've never seen less than 200).  Longer
     is better so that we're not hammering the bus. */
  while ( !HFA384x_EVSTAT_ISCMD(reg) && (counter < 5000)) {
    reg = hfa384x_getreg(hw, HFA384x_EVSTAT);
    counter++;
    udelay(200);
  }
  if ( ! HFA384x_EVSTAT_ISCMD(reg) ) {
    printf("hfa384x_cmd timeout(2), reg=0x%0hx.\n", reg);
    return -ETIMEDOUT;
  }

  /* Read status and response */
  hw->status = hfa384x_getreg(hw, HFA384x_STATUS);
  hw->resp0 = hfa384x_getreg(hw, HFA384x_RESP0);
  hw->resp1 = hfa384x_getreg(hw, HFA384x_RESP1);
  hw->resp2 = hfa384x_getreg(hw, HFA384x_RESP2);
  hfa384x_setreg(hw, HFA384x_EVACK_CMD, HFA384x_EVACK);
  return HFA384x_STATUS_RESULT_GET(hw->status);
}

References cmd, ETIMEDOUT, HFA384x_CMD, HFA384x_CMD_ISBUSY, HFA384x_EVACK, HFA384x_EVACK_CMD, HFA384x_EVSTAT, HFA384x_EVSTAT_ISCMD, hfa384x_getreg(), HFA384x_PARAM0, HFA384x_PARAM1, HFA384x_PARAM2, HFA384x_RESP0, HFA384x_RESP1, HFA384x_RESP2, hfa384x_setreg(), HFA384x_STATUS, HFA384x_STATUS_RESULT_GET, printf(), reg, and udelay().

Referenced by hfa384x_cmd_access(), prism2_probe(), and prism2_transmit().

hfa384x_prepare_bap()

static int hfa384x_prepare_bap ( hfa384x_t *  hw, uint16_t  id, uint16_t  offset  )

static

Definition at line 300 of file prism2.c.

{
  int result = 0;
  uint16_t reg;
  uint16_t i;

  /* Validate offset, buf, and len */
  if ( (offset > HFA384x_BAP_OFFSET_MAX) || (offset % 2) ) {
    result = -EINVAL;
  } else {
    /* Write fid/rid and offset */
    hfa384x_setreg(hw, id, HFA384x_SELECT0);
    udelay(10);
    hfa384x_setreg(hw, offset, HFA384x_OFFSET0);
    /* Wait for offset[busy] to clear (see BAP_TIMEOUT) */
    i = 0;
    do {
      reg = hfa384x_getreg(hw, HFA384x_OFFSET0);
      if ( i > 0 ) udelay(2);
      i++;
    } while ( i < BAP_TIMEOUT && HFA384x_OFFSET_ISBUSY(reg));
    if ( i >= BAP_TIMEOUT ) {
      /* failure */
      result = reg;
    } else if ( HFA384x_OFFSET_ISERR(reg) ){
      /* failure */
      result = reg;
    }
  }
  return result;
}

References BAP_TIMEOUT, EINVAL, HFA384x_BAP_OFFSET_MAX, hfa384x_getreg(), HFA384x_OFFSET0, HFA384x_OFFSET_ISBUSY, HFA384x_OFFSET_ISERR, HFA384x_SELECT0, hfa384x_setreg(), offset, reg, result, and udelay().

Referenced by hfa384x_copy_from_bap(), and hfa384x_copy_to_bap().

hfa384x_copy_from_bap()

static int hfa384x_copy_from_bap ( hfa384x_t *  hw, uint16_t  id, uint16_t  offset, void *  buf, unsigned int  len  )

static

Definition at line 344 of file prism2.c.

{
  int result = 0;
  uint8_t       *d = (uint8_t*)buf;
  uint16_t i;
  uint16_t reg = 0;

  /* Prepare BAP */
  result = hfa384x_prepare_bap ( hw, id, offset );
  if ( result == 0 ) {
    /* Read even(len) buf contents from data reg */
    for ( i = 0; i < (len & 0xfffe); i+=2 ) {
      *(uint16_t*)(&(d[i])) = hfa384x_getreg_noswap(hw, HFA384x_DATA0);
    }
    /* If len odd, handle last byte */
    if ( len % 2 ){
      reg = hfa384x_getreg_noswap(hw, HFA384x_DATA0);
      d[len-1] = ((uint8_t*)(&reg))[0];
    }
  }
  if (result) {
    printf ( "copy_from_bap(%#hx, %#hx, %d) failed, result=%#hx\n", id, offset, len, result);
  }
  return result;
}

References HFA384x_DATA0, hfa384x_getreg_noswap(), hfa384x_prepare_bap(), len, offset, printf(), reg, and result.

Referenced by hfa384x_drvr_getconfig(), prism2_poll(), prism2_probe(), and prism2_transmit().

hfa384x_copy_to_bap()

static int hfa384x_copy_to_bap ( hfa384x_t *  hw, uint16_t  id, uint16_t  offset, void *  buf, unsigned int  len  )

static

Definition at line 383 of file prism2.c.

{
  int result = 0;
  uint8_t       *d = (uint8_t*)buf;
  uint16_t i;
  uint16_t savereg;

  /* Prepare BAP */
  result = hfa384x_prepare_bap ( hw, id, offset );
  if ( result == 0 ) {
    /* Write even(len) buf contents to data reg */
    for ( i = 0; i < (len & 0xfffe); i+=2 ) {
      hfa384x_setreg_noswap(hw, *(uint16_t*)(&(d[i])), HFA384x_DATA0);
    }
    /* If len odd, handle last byte */
    if ( len % 2 ){
      savereg = hfa384x_getreg_noswap(hw, HFA384x_DATA0);
      result = hfa384x_prepare_bap ( hw, id, offset + (len & 0xfffe) );
      if ( result == 0 ) {
        ((uint8_t*)(&savereg))[0] = d[len-1];
        hfa384x_setreg_noswap(hw, savereg, HFA384x_DATA0);
      }
    }
  }
  if (result) {
    printf ( "copy_to_bap(%#hx, %#hx, %d) failed, result=%#hx\n", id, offset, len, result);
  }
  return result;
}

References HFA384x_DATA0, hfa384x_getreg_noswap(), hfa384x_prepare_bap(), hfa384x_setreg_noswap(), len, offset, printf(), and result.

Referenced by hfa384x_drvr_setconfig(), and prism2_transmit().

hfa384x_cmd_access()

static int hfa384x_cmd_access ( hfa384x_t *  hw, uint16_t  write, uint16_t  rid  )

inlinestatic

Definition at line 426 of file prism2.c.

{
  return hfa384x_docmd_wait(hw, HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_ACCESS) | HFA384x_CMD_WRITE_SET(write), rid, 0, 0);
}

References HFA384x_CMD_CMDCODE_SET, HFA384x_CMD_WRITE_SET, HFA384x_CMDCODE_ACCESS, hfa384x_docmd_wait(), and write.

Referenced by hfa384x_drvr_getconfig(), and hfa384x_drvr_setconfig().

hfa384x_drvr_getconfig()

static int hfa384x_drvr_getconfig ( hfa384x_t *  hw, uint16_t  rid, void *  buf, uint16_t  len  )

static

Definition at line 445 of file prism2.c.

{
  int result = 0;
  hfa384x_rec_t rec;

  /* Request read of RID */
  result = hfa384x_cmd_access( hw, 0, rid);
  if ( result ) {
    printf("Call to hfa384x_cmd_access failed\n");
    return -1;
  }
  /* Copy out record length */
  result = hfa384x_copy_from_bap( hw, rid, 0, &rec, sizeof(rec));
  if ( result ) {
    return -1;
  }
  /* Validate the record length */
  if ( ((hfa384x2host_16(rec.reclen)-1)*2) != len ) {  /* note body len calculation in bytes */
    printf ( "RID len mismatch, rid=%#hx hlen=%d fwlen=%d\n", rid, len, (hfa384x2host_16(rec.reclen)-1)*2);
    return -1;
  }
  /* Copy out record data */
  result = hfa384x_copy_from_bap( hw, rid, sizeof(rec), buf, len);
  return result;
}

References hfa384x2host_16, hfa384x_cmd_access(), hfa384x_copy_from_bap(), len, printf(), hfa384x_record::reclen, and result.

Referenced by prism2_probe().

hfa384x_drvr_setconfig()

static int hfa384x_drvr_setconfig ( hfa384x_t *  hw, uint16_t  rid, void *  buf, uint16_t  len  )

static

Definition at line 518 of file prism2.c.

{
  int result = 0;
  hfa384x_rec_t rec;

  rec.rid = host2hfa384x_16(rid);
  rec.reclen = host2hfa384x_16((len/2) + 1); /* note conversion to words, +1 for rid field */
  /* write the record header */
  result = hfa384x_copy_to_bap( hw, rid, 0, &rec, sizeof(rec));
  if ( result ) {
    printf("Failure writing record header\n");
    return -1;
  }
  /* write the record data (if there is any) */
  if ( len > 0 ) {
    result = hfa384x_copy_to_bap( hw, rid, sizeof(rec), buf, len);
    if ( result ) {
      printf("Failure writing record data\n");
      return -1;
    }
  }
  /* Trigger setting of record */
  result = hfa384x_cmd_access( hw, 1, rid);
  return result;
}

References hfa384x_cmd_access(), hfa384x_copy_to_bap(), host2hfa384x_16, len, printf(), hfa384x_record::reclen, result, and hfa384x_record::rid.

Referenced by hfa384x_drvr_setconfig16(), and prism2_probe().

hfa384x_drvr_setconfig16()

static int hfa384x_drvr_setconfig16 ( hfa384x_t *  hw, uint16_t  rid, uint16_t *  val  )

static

Definition at line 555 of file prism2.c.

{
  uint16_t value;
  value = host2hfa384x_16(*val);
  return hfa384x_drvr_setconfig(hw, rid, &value, sizeof(uint16_t));
}

References hfa384x_drvr_setconfig(), host2hfa384x_16, val, and value.

Referenced by prism2_probe().

hfa384x_wait_for_event()

static int hfa384x_wait_for_event ( hfa384x_t *  hw, uint16_t  event_mask, uint16_t  event_ack, int  wait, int  timeout, const char *  descr  )

static

Definition at line 587 of file prism2.c.

{
  uint16_t reg;
  int count = 0;

  do {
    reg = hfa384x_getreg(hw, HFA384x_EVSTAT);
    if ( count > 0 ) udelay(wait);
    count++;
  } while ( !(reg & event_mask) && count < timeout);
  if ( count >= timeout ) {
    printf("hfa384x: Timed out waiting for %s\n", descr);
    return 0; /* Return failure */
  }
  /* Acknowledge all events that we were waiting on */
  hfa384x_setreg(hw, reg & ( event_mask | event_ack ), HFA384x_EVACK);
  return reg;
}

References count, HFA384x_EVACK, HFA384x_EVSTAT, hfa384x_getreg(), hfa384x_setreg(), printf(), reg, timeout(), and udelay().

Referenced by prism2_probe(), and prism2_transmit().

prism2_poll()

static int prism2_poll ( struct nic *  nic, int  retrieve  )

static

Definition at line 609 of file prism2.c.

{
  uint16_t reg;
  uint16_t rxfid;
  uint16_t result;
  hfa384x_rx_frame_t rxdesc;
  hfa384x_t *hw = &hw_global;

  /* Check for received packet */
  reg = hfa384x_getreg(hw, HFA384x_EVSTAT);
  if ( ! HFA384x_EVSTAT_ISRX(reg) ) {
    /* No packet received - return 0 */
    return 0;
  }

  if ( ! retrieve ) return 1;

  /* Acknowledge RX event */
  hfa384x_setreg(hw, HFA384x_EVACK_RX_SET(1), HFA384x_EVACK);
  /* Get RX FID */
  rxfid = hfa384x_getreg(hw, HFA384x_RXFID);
  /* Get the descriptor (including headers) */
  result = hfa384x_copy_from_bap(hw, rxfid, 0, &rxdesc, sizeof(rxdesc));
  if ( result ) {
    return 0; /* fail */
  }
  /* Byte order convert once up front. */
  rxdesc.status = hfa384x2host_16(rxdesc.status);
  rxdesc.time = hfa384x2host_32(rxdesc.time);
  rxdesc.data_len = hfa384x2host_16(rxdesc.data_len);

  /* Fill in nic->packetlen */
  nic->packetlen = rxdesc.data_len;
  if ( nic->packetlen > 0 ) {
    /* Fill in nic->packet */
    /*
     * NOTE: Packets as received have an 8-byte header (LLC+SNAP(?)) terminating with the packet type.
     * Etherboot expects a 14-byte header terminating with the packet type (it ignores the rest of the
     * header), so we use a quick hack to achieve this.
     */
    result = hfa384x_copy_from_bap(hw, rxfid, HFA384x_RX_DATA_OFF,
                                   nic->packet + ETH_HLEN - sizeof(wlan_80211hdr_t), nic->packetlen);
    if ( result ) {
      return 0; /* fail */
    }
  }
  return 1; /* Packet successfully received */
}

References ETH_HLEN, hfa384x2host_16, hfa384x2host_32, hfa384x_copy_from_bap(), HFA384x_EVACK, HFA384x_EVACK_RX_SET, HFA384x_EVSTAT, HFA384x_EVSTAT_ISRX, hfa384x_getreg(), HFA384x_RX_DATA_OFF, HFA384x_RXFID, hfa384x_setreg(), hw_global, nic::packet, nic::packetlen, reg, result, and rxdesc::status.

prism2_transmit()

static void prism2_transmit ( struct nic *  nic, const char *  d, unsigned int  t, unsigned int  s, const char *  p  )

static

Definition at line 661 of file prism2.c.

{
  hfa384x_t *hw = &hw_global;
  hfa384x_tx_frame_t txdesc;
  wlan_80211hdr_t p80211hdr = { wlan_llc_snap, {{0,0,0},0} };
  uint16_t fid;
  uint16_t status;
  int result;

  // Request FID allocation
  result = hfa384x_docmd_wait(hw, HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_ALLOC), HFA384x_DRVR_TXBUF_MAX, 0, 0);
  if (result != 0) {
    printf("hfa384x: Tx FID allocate command failed: Aborting transmit..\n");
    return;
  }
  if ( !hfa384x_wait_for_event(hw, HFA384x_EVSTAT_ALLOC, HFA384x_EVACK_INFO, 10, 50, "Tx FID to be allocated\n" ) ) return;
  fid = hfa384x_getreg(hw, HFA384x_ALLOCFID);

  /* Build Tx frame structure */
  memset(&txdesc, 0, sizeof(txdesc));
  txdesc.tx_control = host2hfa384x_16( HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) |
                                       HFA384x_TX_TXEX_SET(1) | HFA384x_TX_TXOK_SET(1) );
  txdesc.frame_control =  host2ieee16( WLAN_SET_FC_FTYPE(WLAN_FTYPE_DATA) |
                                       WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_DATAONLY) |
                                       WLAN_SET_FC_TODS(1) );
  memcpy(txdesc.address1, hw->bssid, WLAN_ADDR_LEN);
  memcpy(txdesc.address2, nic->node_addr, WLAN_ADDR_LEN);
  memcpy(txdesc.address3, d, WLAN_ADDR_LEN);
  txdesc.data_len = host2hfa384x_16( sizeof(txdesc) + sizeof(p80211hdr) + s );
  /* Set up SNAP header */
  /* Let OUI default to RFC1042 (0x000000) */
  p80211hdr.snap.type = htons(t);

  /* Copy txdesc, p80211hdr and payload parts to FID */
  result = hfa384x_copy_to_bap(hw, fid, 0, &txdesc, sizeof(txdesc));
  if ( result ) return; /* fail */
  result = hfa384x_copy_to_bap( hw, fid, sizeof(txdesc), &p80211hdr, sizeof(p80211hdr) );
  if ( result ) return; /* fail */
  result = hfa384x_copy_to_bap( hw, fid, sizeof(txdesc) + sizeof(p80211hdr), (uint8_t*)p, s );
  if ( result ) return; /* fail */

  /* Issue Tx command */
  result = hfa384x_docmd_wait(hw, HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_TX), fid, 0, 0);
  if ( result != 0 ) {
    printf("hfa384x: Transmit failed with result %#hx.\n", result);
    return;
  }

  /* Wait for transmit completion (or exception) */
  result = hfa384x_wait_for_event(hw, HFA384x_EVSTAT_TXEXC | HFA384x_EVSTAT_TX, HFA384x_EVACK_INFO,
                                  200, 500, "Tx to complete\n" );
  if ( !result ) return; /* timeout failure */
  if ( HFA384x_EVSTAT_ISTXEXC(result) ) {
    fid = hfa384x_getreg(hw, HFA384x_TXCOMPLFID);
    printf ( "Tx exception occurred with fid %#hx\n", fid );
    result = hfa384x_copy_from_bap(hw, fid, 0, &status, sizeof(status));
    if ( result ) return; /* fail */
    printf("hfa384x: Tx error occurred (status %#hx):\n", status);
    if ( HFA384x_TXSTATUS_ISACKERR(status) ) { printf(" ...acknowledgement error\n"); }
    if ( HFA384x_TXSTATUS_ISFORMERR(status) ) { printf(" ...format error\n"); }
    if ( HFA384x_TXSTATUS_ISDISCON(status) ) { printf(" ...disconnected error\n"); }
    if ( HFA384x_TXSTATUS_ISAGEDERR(status) ) { printf(" ...AGED error\n"); }
    if ( HFA384x_TXSTATUS_ISRETRYERR(status) ) { printf(" ...retry error\n"); }
    return; /* fail */
  }
}

References HFA384x_ALLOCFID, HFA384x_CMD_CMDCODE_SET, HFA384x_CMDCODE_ALLOC, HFA384x_CMDCODE_TX, hfa384x_copy_from_bap(), hfa384x_copy_to_bap(), hfa384x_docmd_wait(), HFA384x_DRVR_TXBUF_MAX, HFA384x_EVACK_INFO, HFA384x_EVSTAT_ALLOC, HFA384x_EVSTAT_ISTXEXC, HFA384x_EVSTAT_TX, HFA384x_EVSTAT_TXEXC, hfa384x_getreg(), HFA384x_TX_MACPORT_SET, HFA384x_TX_STRUCTYPE_SET, HFA384x_TX_TXEX_SET, HFA384x_TX_TXOK_SET, HFA384x_TXCOMPLFID, HFA384x_TXSTATUS_ISACKERR, HFA384x_TXSTATUS_ISAGEDERR, HFA384x_TXSTATUS_ISDISCON, HFA384x_TXSTATUS_ISFORMERR, HFA384x_TXSTATUS_ISRETRYERR, hfa384x_wait_for_event(), host2hfa384x_16, host2ieee16, htons, hw_global, memcpy(), memset(), nic::node_addr, printf(), result, wlan_80211hdr::snap, status, wlan_snap::type, WLAN_ADDR_LEN, WLAN_FSTYPE_DATAONLY, WLAN_FTYPE_DATA, wlan_llc_snap, WLAN_SET_FC_FSTYPE, WLAN_SET_FC_FTYPE, and WLAN_SET_FC_TODS.

prism2_disable()

static void prism2_disable ( struct nic *nic  __unused )

static

Definition at line 736 of file prism2.c.

                                                        {
  /* put the card in its initial state */
}

Referenced by prism2_pci_disable(), and prism2_plx_disable().

prism2_irq()

static void prism2_irq ( struct nic *nic  __unused, irq_action_t action  __unused  )

static

Definition at line 743 of file prism2.c.

{
  switch ( action ) {
  case DISABLE :
    break;
  case ENABLE :
    break;
  case FORCE :
    break;
  }
}

References DISABLE, ENABLE, and FORCE.

prism2_probe()

static int prism2_probe ( struct nic *  nic, hfa384x_t *  hw  )

static

Definition at line 769 of file prism2.c.

                                                           {
  int result;
  uint16_t tmp16 = 0;
  uint16_t infofid;
  hfa384x_InfFrame_t inf;
  char ssid[HFA384x_RID_CNFDESIREDSSID_LEN];
  int info_count = 0;

  nic->irqno  = 0;

  /* Initialize card */
  result = hfa384x_docmd_wait(hw, HFA384x_CMDCODE_INIT, 0,0,0); /* Send initialize command */
  if ( result ) printf ( "Initialize command returned %#hx\n", result );
  hfa384x_setreg(hw, 0, HFA384x_INTEN); /* Disable interrupts */
  hfa384x_setreg(hw, 0xffff, HFA384x_EVACK); /* Acknowledge any spurious events */

  DBG ( "MAC address %s\n", eth_ntoa ( nic->node_addr ) );

  /* Retrieve MAC address (and fill out nic->node_addr) */
  hfa384x_drvr_getconfig ( hw, HFA384x_RID_CNFOWNMACADDR, nic->node_addr, HFA384x_RID_CNFOWNMACADDR_LEN );

  /* Prepare card for autojoin */
  /* This procedure is reverse-engineered from a register-level trace of the Linux driver's join process */
  tmp16 = WLAN_DATA_MAXLEN; /* Set maximum data length */
  result = hfa384x_drvr_setconfig16(hw, HFA384x_RID_CNFMAXDATALEN, &tmp16);
  if ( result ) printf ( "Set Max Data Length command returned %#hx\n", result );
  tmp16 = 0x000f; /* Set transmit rate(?) */
  result = hfa384x_drvr_setconfig16(hw, HFA384x_RID_TXRATECNTL, &tmp16);
  if ( result ) printf ( "Set Transmit Rate command returned %#hx\n", result );
  tmp16 = HFA384x_CNFAUTHENTICATION_OPENSYSTEM; /* Set authentication type to OpenSystem */
  result = hfa384x_drvr_setconfig16(hw, HFA384x_RID_CNFAUTHENTICATION, &tmp16);
  if ( result ) printf ( "Set Authentication Type command returned %#hx\n", result );
  /* Set SSID */
  memset(ssid, 0, HFA384x_RID_CNFDESIREDSSID_LEN);
  for ( tmp16=0; tmp16<sizeof(hardcoded_ssid); tmp16++ ) { ssid[2+tmp16] = hardcoded_ssid[tmp16]; }
  ssid[0] = sizeof(hardcoded_ssid) - 1; /* Ignore terminating zero */
  result = hfa384x_drvr_setconfig(hw, HFA384x_RID_CNFDESIREDSSID, ssid, HFA384x_RID_CNFDESIREDSSID_LEN); /* Set the SSID */
  if ( result ) printf ( "Set SSID command returned %#hx\n", result );
  tmp16 = 1; /* Set port type to ESS port */
  result = hfa384x_drvr_setconfig16(hw, HFA384x_RID_CNFPORTTYPE, &tmp16);
  if ( result ) printf ( "Set port type command returned %#hx\n", result );
  /* Enable card */
  result = hfa384x_docmd_wait(hw, HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_ENABLE) | HFA384x_CMD_MACPORT_SET(0), 0,0,0);
  if ( result ) printf ( "Enable command returned %#hx\n", result );

  do {
    /* Increment info_count, abort if too many attempts.
     * See comment next to definition of MAX_JOIN_INFO_COUNT for explanation.
     */
    info_count++;
    if ( info_count > MAX_JOIN_INFO_COUNT ) {
      printf ( "Too many failed attempts - aborting\n" );
      return 0;
    }

    /* Wait for info frame to indicate link status */
    if ( sizeof(hardcoded_ssid) == 1 ) {
      /* Empty SSID => join to any SSID */
      printf ( "Attempting to autojoin to any available access point (attempt %d)...", info_count );
    } else {
      printf ( "Attempting to autojoin to SSID %s (attempt %d)...", &ssid[2], info_count );
    }

    if ( !hfa384x_wait_for_event(hw, HFA384x_EVSTAT_INFO, 0, 1000, 2000, "Info event" ) ) return 0;
    printf("done\n");
    infofid = hfa384x_getreg(hw, HFA384x_INFOFID);
    /* Retrieve the length */
    result = hfa384x_copy_from_bap( hw, infofid, 0, &inf.framelen, sizeof(uint16_t));
    if ( result ) return 0; /* fail */
    inf.framelen = hfa384x2host_16(inf.framelen);
    /* Retrieve the rest */
    result = hfa384x_copy_from_bap( hw, infofid, sizeof(uint16_t),
                                    &(inf.infotype), inf.framelen * sizeof(uint16_t));
    if ( result ) return 0; /* fail */
    if ( inf.infotype != HFA384x_IT_LINKSTATUS ) {
      /* Not a Link Status info frame: die */
      printf ( "Unexpected info frame type %#hx (not LinkStatus type)\n", inf.infotype );
      return 0;
    }
    inf.info.linkstatus.linkstatus = hfa384x2host_16(inf.info.linkstatus.linkstatus);
    if ( inf.info.linkstatus.linkstatus != HFA384x_LINK_CONNECTED ) {
      /* Link not connected - retry */
      printf ( "Link not connected (status %#hx)\n", inf.info.linkstatus.linkstatus );
    }
  } while ( inf.info.linkstatus.linkstatus != HFA384x_LINK_CONNECTED );

  /* Retrieve BSSID and print Connected message */
  result = hfa384x_drvr_getconfig(hw, HFA384x_RID_CURRENTBSSID, hw->bssid, WLAN_BSSID_LEN);

  DBG ( "Link connected (BSSID %s - ", eth_ntoa ( hw->bssid ) );
  DBG ( " MAC address %s)\n", eth_ntoa (nic->node_addr ) );

  /* point to NIC specific routines */
  nic->nic_op   = &prism2_operations;
  return 1;
}

References DBG, eth_ntoa(), hfa384x_InfFrame::framelen, hardcoded_ssid, hfa384x2host_16, HFA384x_CMD_CMDCODE_SET, HFA384x_CMD_MACPORT_SET, HFA384x_CMDCODE_ENABLE, HFA384x_CMDCODE_INIT, HFA384x_CNFAUTHENTICATION_OPENSYSTEM, hfa384x_copy_from_bap(), hfa384x_docmd_wait(), hfa384x_drvr_getconfig(), hfa384x_drvr_setconfig(), hfa384x_drvr_setconfig16(), HFA384x_EVACK, HFA384x_EVSTAT_INFO, hfa384x_getreg(), HFA384x_INFOFID, HFA384x_INTEN, HFA384x_IT_LINKSTATUS, HFA384x_LINK_CONNECTED, HFA384x_RID_CNFAUTHENTICATION, HFA384x_RID_CNFDESIREDSSID, HFA384x_RID_CNFDESIREDSSID_LEN, HFA384x_RID_CNFMAXDATALEN, HFA384x_RID_CNFOWNMACADDR, HFA384x_RID_CNFOWNMACADDR_LEN, HFA384x_RID_CNFPORTTYPE, HFA384x_RID_CURRENTBSSID, HFA384x_RID_TXRATECNTL, hfa384x_setreg(), hfa384x_wait_for_event(), hfa384x_InfFrame::info, hfa384x_InfFrame::infotype, nic::irqno, hfa384x_LinkStatus::linkstatus, hfa384x_infodata::linkstatus, MAX_JOIN_INFO_COUNT, memset(), nic::nic_op, nic::node_addr, printf(), prism2_operations, result, ssid, WLAN_BSSID_LEN, and WLAN_DATA_MAXLEN.

Referenced by prism2_pci_probe(), and prism2_plx_probe().

Variable Documentation

hardcoded_ssid

const char hardcoded_ssid[] = ""

static

Definition at line 38 of file prism2.c.

Referenced by prism2_probe().

hw_global

hfa384x_t hw_global

static

Definition at line 143 of file prism2.c.

Referenced by prism2_pci_probe(), prism2_plx_probe(), prism2_poll(), and prism2_transmit().

wlan_llc_snap

const wlan_llc_t wlan_llc_snap = { 0xaa, 0xaa, 0x03 }

static

Definition at line 157 of file prism2.c.

Referenced by prism2_transmit().

prism2_operations

struct nic_operations prism2_operations

static

Initial value:

= {
        .connect        = dummy_connect,
        .poll           = prism2_poll,
        .transmit       = prism2_transmit,
        .irq            = prism2_irq,
}

Definition at line 758 of file prism2.c.

Referenced by prism2_probe().