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1 //========================================================================== |
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2 // |
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3 // dev/KS8721.c |
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4 // |
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5 // Ethernet transceiver (PHY) support |
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6 // |
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7 //========================================================================== |
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8 //####ECOSGPLCOPYRIGHTBEGIN#### |
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9 // ------------------------------------------- |
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10 // This file is part of eCos, the Embedded Configurable Operating System. |
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11 // Copyright (C) 2005 Gary Thomas |
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12 // |
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13 // eCos is free software; you can redistribute it and/or modify it under |
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14 // the terms of the GNU General Public License as published by the Free |
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15 // Software Foundation; either version 2 or (at your option) any later version. |
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16 // |
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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20 // for more details. |
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21 // |
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22 // You should have received a copy of the GNU General Public License along |
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23 // with eCos; if not, write to the Free Software Foundation, Inc., |
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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25 // |
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26 // As a special exception, if other files instantiate templates or use macros |
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27 // or inline functions from this file, or you compile this file and link it |
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28 // with other works to produce a work based on this file, this file does not |
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29 // by itself cause the resulting work to be covered by the GNU General Public |
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30 // License. However the source code for this file must still be made available |
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31 // in accordance with section (3) of the GNU General Public License. |
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32 // |
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33 // This exception does not invalidate any other reasons why a work based on |
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34 // this file might be covered by the GNU General Public License. |
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35 // |
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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37 // at http://sources.redhat.com/ecos/ecos-license/ |
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38 // ------------------------------------------- |
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39 //####ECOSGPLCOPYRIGHTEND#### |
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40 //========================================================================== |
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41 //#####DESCRIPTIONBEGIN#### |
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42 // |
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43 // Author(s): Uwe Kindler <uwe_kindler@web.de> |
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44 // Contributors: Markus Schade <marks@peppercon.de> |
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45 // Date: 2007-04-04 |
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46 // Purpose: |
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47 // Description: Support for ethernet Micrel KS8721 PHY |
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48 // |
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49 // |
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50 //####DESCRIPTIONEND#### |
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51 // |
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52 //========================================================================== |
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53 |
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54 #include <pkgconf/system.h> |
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55 #include <pkgconf/devs_eth_phy.h> |
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56 |
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57 #include <cyg/infra/cyg_type.h> |
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58 |
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59 #include <cyg/hal/hal_arch.h> |
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60 #include <cyg/hal/drv_api.h> |
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61 #include <cyg/hal/hal_if.h> |
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62 #include <cyg/hal/hal_tables.h> |
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63 |
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64 #include <cyg/io/eth_phy.h> |
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65 #include <cyg/io/eth_phy_dev.h> |
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66 |
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67 |
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68 static bool ks8721_stat(eth_phy_access_t *f, int *state) |
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69 { |
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70 unsigned short phy_state; |
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71 unsigned short phy_anadv_reg; |
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72 int tries; |
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73 int ms; |
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74 |
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75 // Read negotiated state |
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76 if (_eth_phy_read(f, PHY_BMSR, f->phy_addr, &phy_state)) |
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77 { |
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78 if ((phy_state & PHY_BMSR_AUTO_NEG) == 0) |
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79 { |
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80 eth_phy_printf("... waiting for auto-negotiation"); |
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81 for (tries = 0; tries < CYGINT_DEVS_ETH_PHY_AUTO_NEGOTIATION_TIME; tries++) |
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82 { |
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83 if (_eth_phy_read(f, PHY_BMSR, f->phy_addr, &phy_state)) |
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84 { |
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85 if ((phy_state & PHY_BMSR_AUTO_NEG) != 0) |
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86 { |
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87 break; |
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88 } |
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89 } |
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90 |
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91 // |
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92 // Wait for 1 second |
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93 // |
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94 for (ms = 0; ms < 1000; ++ms) |
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95 { |
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96 CYGACC_CALL_IF_DELAY_US(1000); // 1 ms |
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97 } |
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98 eth_phy_printf("."); |
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99 } |
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100 eth_phy_printf("\n"); |
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101 } |
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102 if ((phy_state & PHY_BMSR_AUTO_NEG) != 0) |
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103 { |
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104 _eth_phy_read(f, PHY_AN_ADV, f->phy_addr, &phy_anadv_reg); |
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105 eth_phy_printf("\nAuto negotiation advertisement: %x\n", phy_anadv_reg); |
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106 *state = 0; |
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107 if ((phy_state & PHY_BMSR_LINK) != 0) *state |= ETH_PHY_STAT_LINK; |
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108 if ((phy_anadv_reg & PHY_AN_ADV_100FDX) != 0) *state |= ETH_PHY_STAT_100MB | ETH_PHY_STAT_FDX; |
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109 return true; |
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110 } |
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111 } |
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112 return false; |
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113 } |
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114 |
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115 _eth_phy_dev("Micrel KS8721", 0x00221619, ks8721_stat) |
