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skrzyp |
//==========================================================================
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//
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// dev/KSZ8001.c
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//
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// Ethernet transceiver (PHY) support for Micrel KSZ8001
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 2008 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): Uwe Kindler <uwe_kindler@web.de>
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// Contributors:
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// Date: 2008-08-05
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// Purpose:
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// Description: Support for ethernet PHY Micrel KSZ8001
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//
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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//==========================================================================
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// INCLUDES
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//==========================================================================
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#include <pkgconf/system.h>
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#include <pkgconf/devs_eth_phy.h>
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#include <cyg/infra/cyg_type.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/drv_api.h>
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#include <cyg/hal/hal_if.h>
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#include <cyg/hal/hal_tables.h>
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#include <cyg/io/eth_phy.h>
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#include <cyg/io/eth_phy_dev.h>
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//==========================================================================
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// DEFINES
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//==========================================================================
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#define PHY_100BASE_CTRL 0x1f // 100BASE-TX PHY Control Register
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#define PHY_100BASE_CTRL_OP_MODE_MASK (0x07 << 2)
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#define PHY_100BASE_CTRL_AN_MODE (0x00 << 2)
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#define PHY_100BASE_CTRL_10T_HDX (0x01 << 2)
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#define PHY_100BASE_CTRL_100T_HDX (0x02 << 2)
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#define PHY_100BASE_CTRL_DEFAULT (0x03 << 2)
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#define PHY_100BASE_CTRL_10T_FDX (0x05 << 2)
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#define PHY_100BASE_CTRL_100T_FDX (0x06 << 2)
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//==========================================================================
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// Query the 100BASE-TX PHY Control Register and return a status bitmap
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// indicating the state of the physical connection
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//==========================================================================
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static bool ksz8001_stat(eth_phy_access_t *f, int *state)
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{
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unsigned short phy_state;
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unsigned short phy_100ctrl_reg;
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int tries;
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int ms;
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// Read negotiated state
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if (_eth_phy_read(f, PHY_BMSR, f->phy_addr, &phy_state))
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{
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if ((phy_state & PHY_BMSR_AUTO_NEG) == 0)
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{
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eth_phy_printf("... waiting for auto-negotiation");
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for (tries = 0; tries < CYGINT_DEVS_ETH_PHY_AUTO_NEGOTIATION_TIME; tries++)
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{
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if (_eth_phy_read(f, PHY_BMSR, f->phy_addr, &phy_state))
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{
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if ((phy_state & PHY_BMSR_AUTO_NEG) != 0)
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{
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break;
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}
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}
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//
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// Wait for 1 second
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//
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for (ms = 0; ms < 1000; ++ms)
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{
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CYGACC_CALL_IF_DELAY_US(1000); // 1 ms
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}
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eth_phy_printf(".");
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}
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eth_phy_printf("\n");
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}
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if ((phy_state & PHY_BMSR_AUTO_NEG) != 0)
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{
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*state = 0;
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if ((phy_state & PHY_BMSR_LINK) != 0)
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{
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*state |= ETH_PHY_STAT_LINK;
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}
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_eth_phy_read(f, PHY_100BASE_CTRL, f->phy_addr, &phy_100ctrl_reg);
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phy_100ctrl_reg &= PHY_100BASE_CTRL_OP_MODE_MASK;
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switch (phy_100ctrl_reg)
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{
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case PHY_100BASE_CTRL_10T_HDX:
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break;
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case PHY_100BASE_CTRL_100T_HDX:
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*state |= ETH_PHY_STAT_100MB;
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break;
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case PHY_100BASE_CTRL_10T_FDX:
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*state |= ETH_PHY_STAT_FDX;
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break;
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case PHY_100BASE_CTRL_100T_FDX:
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*state |= ETH_PHY_STAT_100MB | ETH_PHY_STAT_FDX;
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break;
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default:
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// force to set default 100 Full Duplex
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*state |= ETH_PHY_STAT_100MB | ETH_PHY_STAT_FDX;
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} // switch (phy_100ctrl_reg)
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return true;
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}
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}
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return false;
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}
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_eth_phy_dev("Micrel KSZ8001", 0x00221613, ksz8001_stat)
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