1 //==========================================================================
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
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38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
47 // Description: Support for ethernet NS DP83847 PHY
50 //####DESCRIPTIONEND####
52 //==========================================================================
54 #include <pkgconf/system.h>
55 #include <pkgconf/devs_eth_phy.h>
57 #include <cyg/infra/cyg_type.h>
59 #include <cyg/hal/hal_arch.h>
60 #include <cyg/hal/drv_api.h>
61 #include <cyg/hal/hal_if.h>
62 #include <cyg/hal/hal_tables.h>
64 #include <cyg/io/eth_phy.h>
65 #include <cyg/io/eth_phy_dev.h>
67 static bool dp83847_stat(eth_phy_access_t *f, int *state)
69 unsigned short phy_state;
72 // Read negotiated state
73 if (_eth_phy_read(f, 0x10, f->phy_addr, &phy_state)) {
74 if ((phy_state & 0x10) == 0) {
75 eth_phy_printf("... waiting for auto-negotiation");
76 for (tries = 0; tries < CYGINT_DEVS_ETH_PHY_AUTO_NEGOTIATION_TIME; tries++) {
77 if (_eth_phy_read(f, 0x10, f->phy_addr, &phy_state)) {
78 if ((phy_state & 0x10) != 0) {
82 CYGACC_CALL_IF_DELAY_US(1000000); // 1 second
87 if ((phy_state & 0x10) != 0) {
89 if ((phy_state & 0x0001) != 0) *state |= ETH_PHY_STAT_LINK;
90 if ((phy_state & 0x0002) == 0) *state |= ETH_PHY_STAT_100MB;
91 if ((phy_state & 0x0004) != 0) *state |= ETH_PHY_STAT_FDX;
98 _eth_phy_dev("National Semiconductor DP83847", 0x20005c30, dp83847_stat)