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__ */ 180