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< h1 > at91sam7_mii.c< / h1 > < / div >
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< a href = "at91sam7__mii_8c.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < pre class = "fragment" > < a name = "l00001" > < / a > 00001 < span class = "comment" > /*< / span >
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< a name = "l00002" > < / a > 00002 < span class = "comment" > ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.< / span >
< a name = "l00003" > < / a > 00003 < span class = "comment" > < / span >
< a name = "l00004" > < / a > 00004 < span class = "comment" > This file is part of ChibiOS/RT.< / span >
< a name = "l00005" > < / a > 00005 < span class = "comment" > < / span >
< a name = "l00006" > < / a > 00006 < span class = "comment" > ChibiOS/RT is free software; you can redistribute it and/or modify< / span >
< a name = "l00007" > < / a > 00007 < span class = "comment" > it under the terms of the GNU General Public License as published by< / span >
< a name = "l00008" > < / a > 00008 < span class = "comment" > the Free Software Foundation; either version 3 of the License, or< / span >
< a name = "l00009" > < / a > 00009 < span class = "comment" > (at your option) any later version.< / span >
< a name = "l00010" > < / a > 00010 < span class = "comment" > < / span >
< a name = "l00011" > < / a > 00011 < span class = "comment" > ChibiOS/RT is distributed in the hope that it will be useful,< / span >
< a name = "l00012" > < / a > 00012 < span class = "comment" > but WITHOUT ANY WARRANTY; without even the implied warranty of< / span >
< a name = "l00013" > < / a > 00013 < span class = "comment" > MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the< / span >
< a name = "l00014" > < / a > 00014 < span class = "comment" > GNU General Public License for more details.< / span >
< a name = "l00015" > < / a > 00015 < span class = "comment" > < / span >
< a name = "l00016" > < / a > 00016 < span class = "comment" > You should have received a copy of the GNU General Public License< / span >
< a name = "l00017" > < / a > 00017 < span class = "comment" > along with this program. If not, see < http://www.gnu.org/licenses/> .< / span >
< a name = "l00018" > < / a > 00018 < span class = "comment" > < / span >
< a name = "l00019" > < / a > 00019 < span class = "comment" > ---< / span >
< a name = "l00020" > < / a > 00020 < span class = "comment" > < / span >
< a name = "l00021" > < / a > 00021 < span class = "comment" > A special exception to the GPL can be applied should you wish to distribute< / span >
< a name = "l00022" > < / a > 00022 < span class = "comment" > a combined work that includes ChibiOS/RT, without being obliged to provide< / span >
< a name = "l00023" > < / a > 00023 < span class = "comment" > the source code for any proprietary components. See the file exception.txt< / span >
< a name = "l00024" > < / a > 00024 < span class = "comment" > for full details of how and when the exception can be applied.< / span >
< a name = "l00025" > < / a > 00025 < span class = "comment" > */< / span >
< a name = "l00026" > < / a > 00026 < span class = "comment" > < / span >
< a name = "l00027" > < / a > 00027 < span class = "comment" > /**< / span >
< a name = "l00028" > < / a > 00028 < span class = "comment" > * @file AT91SAM7/at91sam7_mii.c< / span >
< a name = "l00029" > < / a > 00029 < span class = "comment" > * @brief AT91SAM7 low level MII driver code.< / span >
< a name = "l00030" > < / a > 00030 < span class = "comment" > * @addtogroup AT91SAM7_MII< / span >
< a name = "l00031" > < / a > 00031 < span class = "comment" > * @{< / span >
< a name = "l00032" > < / a > 00032 < span class = "comment" > */< / span >
< a name = "l00033" > < / a > 00033
< a name = "l00034" > < / a > 00034 < span class = "preprocessor" > #include " < a class = "code" href = "ch_8h.html" title = "ChibiOS/RT main include file." > ch.h< / a > " < / span >
< a name = "l00035" > < / a > 00035 < span class = "preprocessor" > #include " < a class = "code" href = "hal_8h.html" title = "HAL subsystem header." > hal.h< / a > " < / span >
< a name = "l00036" > < / a > 00036 < span class = "preprocessor" > #include " < a class = "code" href = "at91sam7__mii_8h.html" title = "AT91SAM7 low level MII driver header." > at91sam7_mii.h< / a > " < / span >
< a name = "l00037" > < / a > 00037
< a name = "l00038" > < / a > 00038 < span class = "preprocessor" > #if CH_HAL_USE_MAC || defined(__DOXYGEN__)< / span >
< a name = "l00039" > < / a > 00039 < span class = "preprocessor" > < / span >
< a name = "l00040" > < / a > 00040 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00041" > < / a > 00041 < span class = "comment" > /* Driver exported variables. */< / span >
< a name = "l00042" > < / a > 00042 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00043" > < / a > 00043
< a name = "l00044" > < / a > 00044 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00045" > < / a > 00045 < span class = "comment" > /* Driver local variables. */< / span >
< a name = "l00046" > < / a > 00046 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00047" > < / a > 00047
< a name = "l00048" > < / a > 00048 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00049" > < / a > 00049 < span class = "comment" > /* Driver local functions. */< / span >
< a name = "l00050" > < / a > 00050 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00051" > < / a > 00051
< a name = "l00052" > < / a > 00052 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00053" > < / a > 00053 < span class = "comment" > /* Driver interrupt handlers. */< / span >
< a name = "l00054" > < / a > 00054 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00055" > < / a > 00055
< a name = "l00056" > < / a > 00056 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00057" > < / a > 00057 < span class = "comment" > /* Driver exported functions. */< / span >
< a name = "l00058" > < / a > 00058 < span class = "comment" > /*===========================================================================*/< / span >
< a name = "l00059" > < / a > 00059 < span class = "comment" > < / span >
< a name = "l00060" > < / a > 00060 < span class = "comment" > /**< / span >
< a name = "l00061" > < / a > 00061 < span class = "comment" > * @brief Low level MII driver initialization.< / span >
< a name = "l00062" > < / a > 00062 < span class = "comment" > */< / span >
< a name = "l00063" > < / a > 00063 < span class = "keywordtype" > void< / span > < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#gaed3a80e66768844a59770c6e6d1e3f2c" title = "Low level MII driver initialization." > miiInit< / a > (< span class = "keywordtype" > void< / span > ) {
< a name = "l00064" > < / a > 00064
< a name = "l00065" > < / a > 00065 }
< a name = "l00066" > < / a > 00066 < span class = "comment" > < / span >
< a name = "l00067" > < / a > 00067 < span class = "comment" > /**< / span >
< a name = "l00068" > < / a > 00068 < span class = "comment" > * @brief Resets a PHY device.< / span >
< a name = "l00069" > < / a > 00069 < span class = "comment" > *< / span >
< a name = "l00070" > < / a > 00070 < span class = "comment" > * @param[in] macp pointer to the @p MACDriver object< / span >
< a name = "l00071" > < / a > 00071 < span class = "comment" > */< / span >
< a name = "l00072" > < / a > 00072 < span class = "keywordtype" > void< / span > < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#ga221391bf04e9bca34eb94daee7dcbd74" title = "Resets a PHY device." > miiReset< / a > (< a class = "code" href = "struct_m_a_c_driver.html" title = "Structure representing a MAC driver." > MACDriver< / a > *macp) {
< a name = "l00073" > < / a > 00073
< a name = "l00074" > < / a > 00074 (void)macp;
< a name = "l00075" > < / a > 00075
< a name = "l00076" > < / a > 00076 < span class = "comment" > /*< / span >
< a name = "l00077" > < / a > 00077 < span class = "comment" > * Disables the pullups on all the pins that are latched on reset by the PHY.< / span >
< a name = "l00078" > < / a > 00078 < span class = "comment" > */< / span >
< a name = "l00079" > < / a > 00079 AT91C_BASE_PIOB-> PIO_PPUDR = PHY_LATCHED_PINS;
< a name = "l00080" > < / a > 00080
< a name = "l00081" > < / a > 00081 < span class = "preprocessor" > #ifdef PIOB_PHY_PD_MASK< / span >
< a name = "l00082" > < / a > 00082 < span class = "preprocessor" > < / span > < span class = "comment" > /*< / span >
< a name = "l00083" > < / a > 00083 < span class = "comment" > * PHY power control.< / span >
< a name = "l00084" > < / a > 00084 < span class = "comment" > */< / span >
< a name = "l00085" > < / a > 00085 AT91C_BASE_PIOB-> PIO_OER = PIOB_PHY_PD_MASK; < span class = "comment" > // Becomes an output.< / span >
< a name = "l00086" > < / a > 00086 AT91C_BASE_PIOB-> PIO_PPUDR = PIOB_PHY_PD_MASK; < span class = "comment" > // Default pullup disabled.< / span >
< a name = "l00087" > < / a > 00087 < span class = "preprocessor" > #if (PHY_HARDWARE == PHY_DAVICOM_9161)< / span >
< a name = "l00088" > < / a > 00088 < span class = "preprocessor" > < / span > AT91C_BASE_PIOB-> PIO_CODR = PIOB_PHY_PD_MASK; < span class = "comment" > // Output to low level.< / span >
< a name = "l00089" > < / a > 00089 < span class = "preprocessor" > #else< / span >
< a name = "l00090" > < / a > 00090 < span class = "preprocessor" > < / span > AT91C_BASE_PIOB-> PIO_SODR = PIOB_PHY_PD_MASK; < span class = "comment" > // Output to high level.< / span >
< a name = "l00091" > < / a > 00091 < span class = "preprocessor" > #endif< / span >
< a name = "l00092" > < / a > 00092 < span class = "preprocessor" > < / span > < span class = "preprocessor" > #endif // PIOB_PHY_PD_MASK< / span >
< a name = "l00093" > < / a > 00093 < span class = "preprocessor" > < / span >
< a name = "l00094" > < / a > 00094 < span class = "comment" > /*< / span >
< a name = "l00095" > < / a > 00095 < span class = "comment" > * PHY reset by pulsing the NRST pin.< / span >
< a name = "l00096" > < / a > 00096 < span class = "comment" > */< / span >
< a name = "l00097" > < / a > 00097 AT91C_BASE_RSTC-> RSTC_RMR = 0xA5000100;
< a name = "l00098" > < / a > 00098 AT91C_BASE_RSTC-> RSTC_RCR = 0xA5000000 | AT91C_RSTC_EXTRST;
< a name = "l00099" > < / a > 00099 < span class = "keywordflow" > while< / span > (!(AT91C_BASE_RSTC-> RSTC_RSR & AT91C_RSTC_NRSTL))
< a name = "l00100" > < / a > 00100 ;
< a name = "l00101" > < / a > 00101 }
< a name = "l00102" > < / a > 00102 < span class = "comment" > < / span >
< a name = "l00103" > < / a > 00103 < span class = "comment" > /**< / span >
< a name = "l00104" > < / a > 00104 < span class = "comment" > * @brief Reads a PHY register through the MII interface.< / span >
< a name = "l00105" > < / a > 00105 < span class = "comment" > *< / span >
< a name = "l00106" > < / a > 00106 < span class = "comment" > * @param[in] macp pointer to the @p MACDriver object< / span >
< a name = "l00107" > < / a > 00107 < span class = "comment" > * @param addr the register address< / span >
< a name = "l00108" > < / a > 00108 < span class = "comment" > * @return The register value.< / span >
< a name = "l00109" > < / a > 00109 < span class = "comment" > */< / span >
< a name = "l00110" > < / a > 00110 < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#ga7330701450a8c3c2f607a7586e6df3cd" title = "Type of a PHY register value." > phyreg_t< / a > < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#gaf7d0058596e16908cb99eac98e74bc41" title = "Reads a PHY register through the MII interface." > miiGet< / a > (< a class = "code" href = "struct_m_a_c_driver.html" title = "Structure representing a MAC driver." > MACDriver< / a > *macp, < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#gab8b750d6ae286c086922eb418aab4716" title = "Type of a PHY register address." > phyaddr_t< / a > addr) {
< a name = "l00111" > < / a > 00111
< a name = "l00112" > < / a > 00112 (void)macp;
< a name = "l00113" > < / a > 00113 AT91C_BASE_EMAC-> EMAC_MAN = (0b01 < < 30) | < span class = "comment" > /* SOF */< / span >
< a name = "l00114" > < / a > 00114 (0b10 < < 28) | < span class = "comment" > /* RW */< / span >
< a name = "l00115" > < / a > 00115 (< a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#ga6d90b77a939f982c12f749bb1158b9b6" title = "Pins latched by the PHY at reset." > PHY_ADDRESS< / a > < < 23) | < span class = "comment" > /* PHYA */< / span >
< a name = "l00116" > < / a > 00116 (addr < < 18) | < span class = "comment" > /* REGA */< / span >
< a name = "l00117" > < / a > 00117 (0b10 < < 16); < span class = "comment" > /* CODE */< / span >
< a name = "l00118" > < / a > 00118 < span class = "keywordflow" > while< / span > (!( AT91C_BASE_EMAC-> EMAC_NSR & AT91C_EMAC_IDLE))
< a name = "l00119" > < / a > 00119 ;
< a name = "l00120" > < / a > 00120 < span class = "keywordflow" > return< / span > (< a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#ga7330701450a8c3c2f607a7586e6df3cd" title = "Type of a PHY register value." > phyreg_t< / a > )(AT91C_BASE_EMAC-> EMAC_MAN & 0xFFFF);
< a name = "l00121" > < / a > 00121 }
< a name = "l00122" > < / a > 00122 < span class = "comment" > < / span >
< a name = "l00123" > < / a > 00123 < span class = "comment" > /**< / span >
< a name = "l00124" > < / a > 00124 < span class = "comment" > * @brief Writes a PHY register through the MII interface.< / span >
< a name = "l00125" > < / a > 00125 < span class = "comment" > *< / span >
< a name = "l00126" > < / a > 00126 < span class = "comment" > * @param[in] macp pointer to the @p MACDriver object< / span >
< a name = "l00127" > < / a > 00127 < span class = "comment" > * @param addr the register address< / span >
< a name = "l00128" > < / a > 00128 < span class = "comment" > * @param value the new register value< / span >
< a name = "l00129" > < / a > 00129 < span class = "comment" > */< / span >
< a name = "l00130" > < / a > 00130 < span class = "keywordtype" > void< / span > < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#gac204449da72cfdd418d590afeabf9e1a" title = "Writes a PHY register through the MII interface." > miiPut< / a > (< a class = "code" href = "struct_m_a_c_driver.html" title = "Structure representing a MAC driver." > MACDriver< / a > *macp, < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#gab8b750d6ae286c086922eb418aab4716" title = "Type of a PHY register address." > phyaddr_t< / a > addr, < a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#ga7330701450a8c3c2f607a7586e6df3cd" title = "Type of a PHY register value." > phyreg_t< / a > value) {
< a name = "l00131" > < / a > 00131
< a name = "l00132" > < / a > 00132 (void)macp;
< a name = "l00133" > < / a > 00133 AT91C_BASE_EMAC-> EMAC_MAN = (0b01 < < 30) | < span class = "comment" > /* SOF */< / span >
< a name = "l00134" > < / a > 00134 (0b01 < < 28) | < span class = "comment" > /* RW */< / span >
< a name = "l00135" > < / a > 00135 (< a class = "code" href = "group___a_t91_s_a_m7___m_i_i.html#ga6d90b77a939f982c12f749bb1158b9b6" title = "Pins latched by the PHY at reset." > PHY_ADDRESS< / a > < < 23) | < span class = "comment" > /* PHYA */< / span >
< a name = "l00136" > < / a > 00136 (addr < < 18) | < span class = "comment" > /* REGA */< / span >
< a name = "l00137" > < / a > 00137 (0b10 < < 16) | < span class = "comment" > /* CODE */< / span >
< a name = "l00138" > < / a > 00138 value;
< a name = "l00139" > < / a > 00139 < span class = "keywordflow" > while< / span > (!( AT91C_BASE_EMAC-> EMAC_NSR & AT91C_EMAC_IDLE))
< a name = "l00140" > < / a > 00140 ;
< a name = "l00141" > < / a > 00141 }
< a name = "l00142" > < / a > 00142
< a name = "l00143" > < / a > 00143 < span class = "preprocessor" > #endif < / span > < span class = "comment" > /* CH_HAL_USE_MAC */< / span >
< a name = "l00144" > < / a > 00144 < span class = "comment" > < / span >
< a name = "l00145" > < / a > 00145 < span class = "comment" > /** @} */< / span >
< / pre > < / div > < / div >
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