# HG changeset patch # User gthomas # Date 1061314008 0 # Node ID 719dd033d0391918c69c496d1d0d4084353ae7d9 # Parent 83f799d5b41a404a10a5a042d852dc35df79c67e New API for handling ethernet PHY devices diff --git a/packages/devs/eth/phy/current/ChangeLog b/packages/devs/eth/phy/current/ChangeLog new file mode 100644 --- /dev/null +++ b/packages/devs/eth/phy/current/ChangeLog @@ -0,0 +1,45 @@ +2003-08-19 Gary Thomas + + * src/eth_phy.c: + * include/eth_phy.h: + * cdl/phy_eth_drivers.cdl: New file(s) - generic API for dealing + with ethernet PHY devices, allowing network drivers more flexibility. + +//=========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. +// Copyright (C) 2003 Gary Thomas +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +// at http://sources.redhat.com/ecos/ecos-license/ +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//=========================================================================== + + + diff --git a/packages/devs/eth/phy/current/cdl/phy_eth_drivers.cdl b/packages/devs/eth/phy/current/cdl/phy_eth_drivers.cdl new file mode 100644 --- /dev/null +++ b/packages/devs/eth/phy/current/cdl/phy_eth_drivers.cdl @@ -0,0 +1,62 @@ +#==================================================================== +# +# phy_eth_drivers.cdl +# +# API support for ethernet transcievers (PHY) +# +#==================================================================== +#####ECOSGPLCOPYRIGHTBEGIN#### +## ------------------------------------------- +## This file is part of eCos, the Embedded Configurable Operating System. +## Copyright (C) 2003 Gary Thomas +## +## eCos is free software; you can redistribute it and/or modify it under +## the terms of the GNU General Public License as published by the Free +## Software Foundation; either version 2 or (at your option) any later version. +## +## eCos is distributed in the hope that it will be useful, but WITHOUT ANY +## WARRANTY; without even the implied warranty of MERCHANTABILITY or +## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +## for more details. +## +## You should have received a copy of the GNU General Public License along +## with eCos; if not, write to the Free Software Foundation, Inc., +## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +## +## As a special exception, if other files instantiate templates or use macros +## or inline functions from this file, or you compile this file and link it +## with other works to produce a work based on this file, this file does not +## by itself cause the resulting work to be covered by the GNU General Public +## License. However the source code for this file must still be made available +## in accordance with section (3) of the GNU General Public License. +## +## This exception does not invalidate any other reasons why a work based on +## this file might be covered by the GNU General Public License. +## +## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +## at http://sources.redhat.com/ecos/ecos-license/ +## ------------------------------------------- +#####ECOSGPLCOPYRIGHTEND#### +# ==================================================================== +######DESCRIPTIONBEGIN#### +# +# Author(s): gthomas +# Original data: gthomas +# Contributors: gthomas +# Date: 2003-08-01 +# +#####DESCRIPTIONEND#### +# +#==================================================================== + +cdl_package CYGPKG_DEVS_ETH_PHY { + display "Ethernet transciever (PHY) support" + description "API for ethernet PHY devices" + + parent CYGPKG_IO_ETH_DRIVERS + active_if CYGPKG_IO_ETH_DRIVERS + + include_dir cyg/io + + compile eth_phy.c +} diff --git a/packages/devs/eth/phy/current/include/eth_phy.h b/packages/devs/eth/phy/current/include/eth_phy.h new file mode 100644 --- /dev/null +++ b/packages/devs/eth/phy/current/include/eth_phy.h @@ -0,0 +1,89 @@ +#ifndef CYGONCE_DEVS_ETH_PHY_H_ +#define CYGONCE_DEVS_ETH_PHY_H_ +//========================================================================== +// +// eth_phy.h +// +// API for ethernet transciever (PHY) support +// +//========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2003 Gary Thomas +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +// at http://sources.redhat.com/ecos/ecos-license/ +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): gthomas +// Contributors: gthomas +// Date: 2003-08-01 +// Purpose: +// Description: +// +//####DESCRIPTIONEND#### +// +//========================================================================== + + +// Transceiver mode +#define PHY_BMCR 0x00 // Register number +#define PHY_BMCR_RESET 0x8000 +#define PHY_BMCR_LOOPBACK 0x4000 +#define PHY_BMCR_100MB 0x2000 +#define PHY_BMCR_AUTO_NEG 0x1000 +#define PHY_BMCR_POWER_DOWN 0x0800 +#define PHY_BMCR_ISOLATE 0x0400 +#define PHY_BMCR_RESTART 0x0200 +#define PHY_BMCR_FULL_DUPLEX 0x0100 +#define PHY_BMCR_COLL_TEST 0x0080 + +#define PHY_BMSR 0x01 // Status register +#define PHY_BMSR_AUTO_NEG 0x0020 +#define PHY_BMSR_LINK 0x0004 + +// Physical device access - defined by hardware instance +typedef struct { + void (*init)(void); + void (*set_data)(int); + int (*get_data)(void); + void (*set_clock)(int); + void (*set_dir)(int); +} eth_phy_access_t; + +#define ETH_PHY_ACCESS_FUNS(_l,_init,_set_data,_get_data,_set_clock,_set_dir) \ +static eth_phy_access_t _l = {_init, _set_data, _get_data, _set_clock, _set_dir} + +externC void _eth_phy_init(eth_phy_access_t *f); +externC void _eth_phy_write(eth_phy_access_t *f, int reg, int unit, unsigned short data); +externC bool _eth_phy_read(eth_phy_access_t *f, int reg, int unit, unsigned short *val); + +#endif // CYGONCE_DEVS_ETH_PHY_H_ +// ------------------------------------------------------------------------ diff --git a/packages/devs/eth/phy/current/src/eth_phy.c b/packages/devs/eth/phy/current/src/eth_phy.c new file mode 100644 --- /dev/null +++ b/packages/devs/eth/phy/current/src/eth_phy.c @@ -0,0 +1,168 @@ +//========================================================================== +// +// dev/eth_phy.c +// +// Ethernet transciever (PHY) support +// +//========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2003 Gary Thomas +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +// at http://sources.redhat.com/ecos/ecos-license/ +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): gthomas +// Contributors: +// Date: 2003-08-01 +// Purpose: +// Description: API support for ethernet PHY +// +// +//####DESCRIPTIONEND#### +// +//========================================================================== + +#include +#include +#include + +#include +#include +#include + +#include + +// MII interface +#define MII_Start 0x40000000 +#define MII_Read 0x20000000 +#define MII_Write 0x10000000 +#define MII_Cmd 0x30000000 +#define MII_Phy(phy) (phy << 23) +#define MII_Reg(reg) (reg << 18) +#define MII_TA 0x00020000 + +// +// PHY unit access (via MII channel) +// + +static cyg_uint32 +phy_cmd(eth_phy_access_t *f, cyg_uint32 cmd) +{ + cyg_uint32 retval; + int i, off; + bool is_read = ((cmd & MII_Cmd) == MII_Read); + + // Set both bits as output + (f->set_dir)(1); + + // Preamble + for (i = 0; i < 32; i++) { + (f->set_clock)(0); + (f->set_data)(1); + CYGACC_CALL_IF_DELAY_US(1); + (f->set_clock)(1); + CYGACC_CALL_IF_DELAY_US(1); + } + + // Command/data + for (i = 0, off = 31; i < (is_read ? 14 : 32); i++, --off) { + (f->set_clock)(0); + (f->set_data)((cmd >> off) & 0x00000001); + CYGACC_CALL_IF_DELAY_US(1); + (f->set_clock)(1); + CYGACC_CALL_IF_DELAY_US(1); + } + + retval = cmd; + + // If read, fetch data register + if (is_read) { + retval >>= 16; + + (f->set_clock)(0); + (f->set_dir)(0); + CYGACC_CALL_IF_DELAY_US(1); + (f->set_clock)(1); + CYGACC_CALL_IF_DELAY_US(1); + (f->set_clock)(0); + CYGACC_CALL_IF_DELAY_US(1); + + for (i = 0, off = 15; i < 16; i++, off--) { + (f->set_clock)(1); + retval <<= 1; + retval |= (f->get_data)(); + CYGACC_CALL_IF_DELAY_US(1); + (f->set_clock)(0); + CYGACC_CALL_IF_DELAY_US(1); + } + } + + // Set both bits as output + (f->set_dir)(1); + + // Postamble + for (i = 0; i < 32; i++) { + (f->set_clock)(0); + (f->set_data)(1); + CYGACC_CALL_IF_DELAY_US(1); + (f->set_clock)(1); + CYGACC_CALL_IF_DELAY_US(1); + } + + return retval; +} + +externC void +_eth_phy_init(eth_phy_access_t *f) +{ + (f->init)(); +} + +externC void +_eth_phy_write(eth_phy_access_t *f, int reg, int addr, unsigned short data) +{ + phy_cmd(f, MII_Start | MII_Write | MII_Phy(addr) | MII_Reg(reg) | MII_TA | data); +} + +externC bool +_eth_phy_read(eth_phy_access_t *f, int reg, int addr, unsigned short *val) +{ + cyg_uint32 ret; + + ret = phy_cmd(f, MII_Start | MII_Read | MII_Phy(addr) | MII_Reg(reg) | MII_TA); + *val = ret; + return true; +} + +externC void _eth_phy_init(eth_phy_access_t *f); +externC void _eth_phy_write(eth_phy_access_t *f, int reg, int unit, unsigned short data); +externC bool _eth_phy_read(eth_phy_access_t *f, int reg, int unit, unsigned short *val);