drivers/net/ne2000.h

   1 /*
   2 Ported to U-Boot  by Christian Pellegrin <chri@ascensit.com>
   3
   4 Based on sources from the Linux kernel (pcnet_cs.c, 8390.h) and
   5 eCOS(if_dp83902a.c, if_dp83902a.h). Both of these 2 wonderful world
   6 are GPL, so this is, of course, GPL.
   7
   8 ==========================================================================
   9
  10       dev/dp83902a.h
  11
  12       National Semiconductor DP83902a ethernet chip
  13
  14 ==========================================================================
  15 ####ECOSGPLCOPYRIGHTBEGIN####
  16  -------------------------------------------
  17  This file is part of eCos, the Embedded Configurable Operating System.
  18  Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
  19
  20  eCos is free software; you can redistribute it and/or modify it under
  21  the terms of the GNU General Public License as published by the Free
  22  Software Foundation; either version 2 or (at your option) any later version.
  23
  24  eCos is distributed in the hope that it will be useful, but WITHOUT ANY
  25  WARRANTY; without even the implied warranty of MERCHANTABILITY or
  26  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  27  for more details.
  28
  29  You should have received a copy of the GNU General Public License along
  30  with eCos; if not, write to the Free Software Foundation, Inc.,
  31  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  32
  33  As a special exception, if other files instantiate templates or use macros
  34  or inline functions from this file, or you compile this file and link it
  35  with other works to produce a work based on this file, this file does not
  36  by itself cause the resulting work to be covered by the GNU General Public
  37  License. However the source code for this file must still be made available
  38  in accordance with section (3) of the GNU General Public License.
  39
  40  This exception does not invalidate any other reasons why a work based on
  41  this file might be covered by the GNU General Public License.
  42
  43  Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
  44  at http://sources.redhat.com/ecos/ecos-license/
  45  -------------------------------------------
  46 ####ECOSGPLCOPYRIGHTEND####
  47 ####BSDCOPYRIGHTBEGIN####
  48
  49  -------------------------------------------
  50
  51  Portions of this software may have been derived from OpenBSD or other sources,
  52  and are covered by the appropriate copyright disclaimers included herein.
  53
  54  -------------------------------------------
  55
  56 ####BSDCOPYRIGHTEND####
  57 ==========================================================================
  58 #####DESCRIPTIONBEGIN####
  59
  60  Author(s):    gthomas
  61  Contributors: gthomas, jskov
  62  Date:         2001-06-13
  63  Purpose:
  64  Description:
  65
  66 ####DESCRIPTIONEND####
  67
  68 ==========================================================================
  69 */
  70
  71 /*
  72  * NE2000 support header file.
  73  *              Created by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
  74  */
  75
  76 #ifndef __DRIVERS_NE2000_H__
  77 #define __DRIVERS_NE2000_H__
  78
  79 /* Enable NE2000 basic init function */
  80 #define NE2000_BASIC_INIT
  81
  82 #define DP_DATA     0x10
  83 #define START_PG    0x50    /* First page of TX buffer */
  84 #define STOP_PG     0x80    /* Last page +1 of RX ring */
  85
  86 #define RX_START    0x50
  87 #define RX_END      0x80
  88
  89 #define DP_IN(_b_, _o_, _d_)  (_d_) = *( (vu_char *) ((_b_)+(_o_)))
  90 #define DP_OUT(_b_, _o_, _d_) *( (vu_char *) ((_b_)+(_o_))) = (_d_)
  91 #define DP_IN_DATA(_b_, _d_)  (_d_) = *( (vu_char *) ((_b_)))
  92 #define DP_OUT_DATA(_b_, _d_) *( (vu_char *) ((_b_))) = (_d_)
  93
  94 static void pcnet_reset_8390(void)
  95 {
  96         int i, r;
  97
  98         PRINTK("nic base is %lx\n", nic_base);
  99
 100         n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
 101         PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD));
 102         n2k_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, E8390_CMD);
 103         PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD));
 104         n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
 105         PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD));
 106         n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
 107
 108         n2k_outb(n2k_inb(PCNET_RESET), PCNET_RESET);
 109
 110         for (i = 0; i < 100; i++) {
 111                 if ((r = (n2k_inb(EN0_ISR) & ENISR_RESET)) != 0)
 112                         break;
 113                 PRINTK("got %x in reset\n", r);
 114                 udelay(100);
 115         }
 116         n2k_outb(ENISR_RESET, EN0_ISR); /* Ack intr. */
 117
 118         if (i == 100)
 119                 printf("pcnet_reset_8390() did not complete.\n");
 120 } /* pcnet_reset_8390 */
 121
 122 int get_prom(u8* mac_addr)
 123 {
 124         u8 prom[32];
 125         int i, j;
 126         struct {
 127                 u_char value, offset;
 128         } program_seq[] = {
 129                 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
 130                 {0x48,  EN0_DCFG},              /* Set byte-wide (0x48) access. */
 131                 {0x00,  EN0_RCNTLO},            /* Clear the count regs. */
 132                 {0x00,  EN0_RCNTHI},
 133                 {0x00,  EN0_IMR},               /* Mask completion irq. */
 134                 {0xFF,  EN0_ISR},
 135                 {E8390_RXOFF, EN0_RXCR},        /* 0x20  Set to monitor */
 136                 {E8390_TXOFF, EN0_TXCR},        /* 0x02  and loopback mode. */
 137                 {32,    EN0_RCNTLO},
 138                 {0x00,  EN0_RCNTHI},
 139                 {0x00,  EN0_RSARLO},            /* DMA starting at 0x0000. */
 140                 {0x00,  EN0_RSARHI},
 141                 {E8390_RREAD+E8390_START, E8390_CMD},
 142         };
 143
 144         PRINTK ("trying to get MAC via prom reading\n");
 145
 146         pcnet_reset_8390 ();
 147
 148         mdelay (10);
 149
 150         for (i = 0; i < sizeof (program_seq) / sizeof (program_seq[0]); i++)
 151                 n2k_outb (program_seq[i].value, program_seq[i].offset);
 152
 153         PRINTK ("PROM:");
 154         for (i = 0; i < 32; i++) {
 155                 prom[i] = n2k_inb (PCNET_DATAPORT);
 156                 PRINTK (" %02x", prom[i]);
 157         }
 158         PRINTK ("\n");
 159         for (i = 0; i < NR_INFO; i++) {
 160                 if ((prom[0] == hw_info[i].a0) &&
 161                     (prom[2] == hw_info[i].a1) &&
 162                     (prom[4] == hw_info[i].a2)) {
 163                         PRINTK ("matched board %d\n", i);
 164                         break;
 165                 }
 166         }
 167         if ((i < NR_INFO) || ((prom[28] == 0x57) && (prom[30] == 0x57))) {
 168                 PRINTK ("on exit i is %d/%ld\n", i, NR_INFO);
 169                 PRINTK ("MAC address is ");
 170                 for (j = 0; j < 6; j++) {
 171                         mac_addr[j] = prom[j << 1];
 172                         PRINTK ("%02x:", mac_addr[i]);
 173                 }
 174                 PRINTK ("\n");
 175                 return (i < NR_INFO) ? i : 0;
 176         }
 177         return NULL;
 178 }
 179 #endif /* __DRIVERS_NE2000_H__ */