139 lines
4.7 KiB
C
139 lines
4.7 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**
|
|
* @file AT91SAM7/at91sam7_mii.c
|
|
* @brief AT91SAM7 low level MII driver code.
|
|
* @addtogroup AT91SAM7_MII
|
|
* @{
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
#include "at91sam7_mii.h"
|
|
|
|
#if CH_HAL_USE_MAC || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Low level MII driver initialization.
|
|
*/
|
|
void miiInit(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Resets a PHY device.
|
|
*
|
|
* @param[in] macp pointer to the @p MACDriver object
|
|
*/
|
|
void miiReset(MACDriver *macp) {
|
|
|
|
(void)macp;
|
|
|
|
/*
|
|
* Disables the pullups on all the pins that are latched on reset by the PHY.
|
|
*/
|
|
AT91C_BASE_PIOB->PIO_PPUDR = PHY_LATCHED_PINS;
|
|
|
|
#ifdef PIOB_PHY_PD_MASK
|
|
/*
|
|
* PHY power control.
|
|
*/
|
|
AT91C_BASE_PIOB->PIO_OER = PIOB_PHY_PD_MASK; // Becomes an output.
|
|
AT91C_BASE_PIOB->PIO_PPUDR = PIOB_PHY_PD_MASK; // Default pullup disabled.
|
|
#if (PHY_HARDWARE == PHY_DAVICOM_9161)
|
|
AT91C_BASE_PIOB->PIO_CODR = PIOB_PHY_PD_MASK; // Output to low level.
|
|
#else
|
|
AT91C_BASE_PIOB->PIO_SODR = PIOB_PHY_PD_MASK; // Output to high level.
|
|
#endif
|
|
#endif // PIOB_PHY_PD_MASK
|
|
|
|
/*
|
|
* PHY reset by pulsing the NRST pin.
|
|
*/
|
|
AT91C_BASE_RSTC->RSTC_RMR = 0xA5000100;
|
|
AT91C_BASE_RSTC->RSTC_RCR = 0xA5000000 | AT91C_RSTC_EXTRST;
|
|
while (!(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_NRSTL))
|
|
;
|
|
}
|
|
|
|
/**
|
|
* @brief Reads a PHY register through the MII interface.
|
|
*
|
|
* @param[in] macp pointer to the @p MACDriver object
|
|
* @param addr the register address
|
|
* @return The register value.
|
|
*/
|
|
phyreg_t miiGet(MACDriver *macp, phyaddr_t addr) {
|
|
|
|
(void)macp;
|
|
AT91C_BASE_EMAC->EMAC_MAN = (0b01 << 30) | /* SOF */
|
|
(0b10 << 28) | /* RW */
|
|
(PHY_ADDRESS << 23) | /* PHYA */
|
|
(addr << 18) | /* REGA */
|
|
(0b10 << 16); /* CODE */
|
|
while (!( AT91C_BASE_EMAC->EMAC_NSR & AT91C_EMAC_IDLE))
|
|
;
|
|
return (phyreg_t)(AT91C_BASE_EMAC->EMAC_MAN & 0xFFFF);
|
|
}
|
|
|
|
/**
|
|
* @brief Writes a PHY register through the MII interface.
|
|
*
|
|
* @param[in] macp pointer to the @p MACDriver object
|
|
* @param addr the register address
|
|
* @param value the new register value
|
|
*/
|
|
void miiPut(MACDriver *macp, phyaddr_t addr, phyreg_t value) {
|
|
|
|
(void)macp;
|
|
AT91C_BASE_EMAC->EMAC_MAN = (0b01 << 30) | /* SOF */
|
|
(0b01 << 28) | /* RW */
|
|
(PHY_ADDRESS << 23) | /* PHYA */
|
|
(addr << 18) | /* REGA */
|
|
(0b10 << 16) | /* CODE */
|
|
value;
|
|
while (!( AT91C_BASE_EMAC->EMAC_NSR & AT91C_EMAC_IDLE))
|
|
;
|
|
}
|
|
|
|
#endif /* CH_HAL_USE_MAC */
|
|
|
|
/** @} */
|