1 //==-*- c-basic-offset 4; tab-width 4 -*-===================================
5 // Ethernet transceiver (PHY) support
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 2003 Gary Thomas
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): LW@KARO-electronics.de
47 // Description: Support for ethernet SMSC LAN8700 PHY
50 //####DESCRIPTIONEND####
52 //==========================================================================
54 #include <pkgconf/system.h>
55 #include <pkgconf/devs_eth_phy.h>
57 #include <cyg/infra/cyg_type.h>
58 #include <cyg/infra/diag.h>
60 #include <cyg/hal/hal_arch.h>
61 #include <cyg/hal/drv_api.h>
62 #include <cyg/hal/hal_if.h>
63 #include <cyg/hal/hal_tables.h>
65 #include <cyg/io/eth_phy.h>
66 #include <cyg/io/eth_phy_dev.h>
68 static bool lan8700_aneg_finished(eth_phy_access_t *f, unsigned short *phy_state)
72 // Read negotiated state
73 if (_eth_phy_read(f, 0x1, f->phy_addr, phy_state)) {
74 if ((*phy_state & 0x20) == 0) {
75 if (tries < CYGINT_DEVS_ETH_PHY_AUTO_NEGOTIATION_TIME) {
77 CYGACC_CALL_IF_DELAY_US(1000000);
78 if (!_eth_phy_read(f, 0x1, f->phy_addr, phy_state)) {
82 if ((*phy_state & 0x20) == 0) {
89 diag_printf("Failed to read PHY status\n");
93 static bool lan8700_stat(eth_phy_access_t *f, int *state)
95 unsigned short phy_state;
97 if (lan8700_aneg_finished(f, &phy_state)) {
99 if ((phy_state & 0x0004) != 0) *state |= ETH_PHY_STAT_LINK;
100 if (_eth_phy_read(f, 0x5, f->phy_addr, &phy_state)) {
101 // Partner negotiated parameters
102 if ((phy_state & 0x0100) != 0) *state |= ETH_PHY_STAT_100MB | ETH_PHY_STAT_FDX;
103 if ((phy_state & 0x0080) != 0) *state |= ETH_PHY_STAT_100MB;
104 if ((phy_state & 0x0040) != 0) *state |= ETH_PHY_STAT_FDX;
111 _eth_phy_dev("SMSC LAN8700 Rev. 3", 0x0007c0c3, lan8700_stat)
112 _eth_phy_dev("SMSC LAN8700 Rev. 4", 0x0007c0c4, lan8700_stat)
113 _eth_phy_dev("SMSC LAN8710 Rev. 1", 0x0007c0f1, lan8700_stat)