xNBA/src/drivers/net/prism2_plx.c

/**************************************************************************
Etherboot -  BOOTP/TFTP Bootstrap Program
Prism2 NIC driver for Etherboot
Wrapper for prism2_plx

Written by Michael Brown of Fen Systems Ltd
$Id$
***************************************************************************/

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2, or (at
 * your option) any later version.
 */

#define WLAN_HOSTIF WLAN_PLX
#include "prism2.c"

static struct pci_id prism2_plx_nics[] = {
PCI_ROM(0x1385, 0x4100, "ma301",         "Netgear MA301"),
PCI_ROM(0x10b7, 0x7770, "3c-airconnect", "3Com AirConnect"),
PCI_ROM(0x111a, 0x1023, "ss1023",        "Siemens SpeedStream SS1023"),
PCI_ROM(0x15e8, 0x0130, "correga",       "Correga"),
PCI_ROM(0x1638, 0x1100, "smc2602w",      "SMC EZConnect SMC2602W"),	/* or Eumitcom PCI WL11000, Addtron AWA-100 */
PCI_ROM(0x16ab, 0x1100, "gl24110p",      "Global Sun Tech GL24110P"),
PCI_ROM(0x16ab, 0x1101, "16ab-1101",     "Unknown"),
PCI_ROM(0x16ab, 0x1102, "wdt11",         "Linksys WDT11"),
PCI_ROM(0x16ec, 0x3685, "usr2415",       "USR 2415"),
PCI_ROM(0xec80, 0xec00, "f5d6000",       "Belkin F5D6000"),
PCI_ROM(0x126c, 0x8030, "emobility",     "Nortel emobility"),
};

static struct pci_driver prism2_plx_driver =
	PCI_DRIVER ( "Prism2_PLX", prism2_plx_nics, PCI_NO_CLASS );

/*
 * Find PLX card.  Prints out information strings from PCMCIA CIS as visual
 * confirmation of presence of card.
 *
 * Arguments:
 *	hw		device structure to be filled in
 *      p               PCI device structure
 *
 * Returns:
 *      1               Success
 */
static int prism2_find_plx ( hfa384x_t *hw, struct pci_device *p )
{
  int found = 0;
  uint32_t plx_lcr  = 0; /* PLX9052 Local Configuration Register Base (I/O) */
  uint32_t attr_mem = 0; /* Prism2 Attribute Memory Base */
  uint32_t iobase   = 0; /* Prism2 I/O Base */
  unsigned char *cis_tpl  = NULL;
  unsigned char *cis_string;
  
  /* Obtain all memory and IO base addresses */
  pci_read_config_dword( p, PLX_LOCAL_CONFIG_REGISTER_BASE, &plx_lcr);
  plx_lcr &= PCI_BASE_ADDRESS_IO_MASK;
  pci_read_config_dword( p, PRISM2_PLX_ATTR_MEM_BASE, &attr_mem);
  pci_read_config_dword( p, PRISM2_PLX_IO_BASE, &iobase);
  iobase &= PCI_BASE_ADDRESS_IO_MASK;

  /* Fill out hw structure */
  hw->membase = attr_mem;
  hw->iobase = iobase;
  printf ( "PLX9052 has local config registers at %#hx\n", plx_lcr );
  printf ( "Prism2 has attribute memory at %#x and I/O base at %#hx\n", attr_mem, iobase );

  /* Search for CIS strings */
  printf ( "Searching for PCMCIA card...\n" );
  cis_tpl = bus_to_virt(attr_mem);
  while ( *cis_tpl != CISTPL_END ) {
    if ( *cis_tpl == CISTPL_VERS_1 ) {
      /* CISTPL_VERS_1 contains some nice text strings */
      printf ( "...found " );
      found = 1;
      cis_string = cis_tpl + CISTPL_VERS_1_STR_OFF;
      while ( ! ( ( *cis_string == 0 ) && ( *(cis_string+CIS_STEP) == 0 ) ) ) {
	printf ( "%c", *cis_string == 0 ? ' ' : *cis_string );
	cis_string += CIS_STEP;
      }
      printf ( "\n" );
    }
    /* printf ( "CIS tuple type %#hhx, length %#hhx\n", *cis_tpl, *(cis_tpl+CISTPL_LEN_OFF) ); */
    cis_tpl += CISTPL_HEADER_LEN + CIS_STEP * ( *(cis_tpl+CISTPL_LEN_OFF) );
  }
  if ( found == 0 ) {
    printf ( "...nothing found\n" );
  }
  ((unsigned char *)bus_to_virt(attr_mem))[COR_OFFSET] = COR_VALUE; /* Write COR to enable PC card */
  return found;
}

static int prism2_plx_probe ( struct dev *dev, struct pci_device *pci ) {
  struct nic *nic = nic_device ( dev );
  hfa384x_t *hw = &hw_global;

  if ( ! find_pci_device ( pci, &prism2_plx_driver ) )
	  return 0;

  /* Find and intialise PLX Prism2 card */
  if ( ! prism2_find_plx ( hw, pci ) ) return 0;
  nic->ioaddr = hw->iobase;

  return prism2_probe ( nic, hw );
}

BOOT_DRIVER ( "Prism2_PLX", prism2_plx_probe );