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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-06-15 15:58:20 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-06-15 15:58:20 +0000 |
| commit | 7c68ef157d009f9932ac47ba21ba5d74e321623f (patch) | |
| tree | 6c2442ca44cd090656ec3059ffb959f3d747e18d /os/hal/platforms/AT91SAM7/at91sam7_mii.c | |
| parent | 076746af63d317f8e96766b9137a65679f60463f (diff) | |
| parent | e0d850113610f3efa0c0ac4946901f683e5e7332 (diff) | |
| download | ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.tar.gz ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.tar.bz2 ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@5854 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/AT91SAM7/at91sam7_mii.c')
| -rw-r--r-- | os/hal/platforms/AT91SAM7/at91sam7_mii.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/os/hal/platforms/AT91SAM7/at91sam7_mii.c b/os/hal/platforms/AT91SAM7/at91sam7_mii.c new file mode 100644 index 000000000..b64a389a2 --- /dev/null +++ b/os/hal/platforms/AT91SAM7/at91sam7_mii.c @@ -0,0 +1,144 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @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 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.
+ *
+ * @notapi
+ */
+void miiInit(void) {
+
+}
+
+/**
+ * @brief Resets a PHY device.
+ *
+ * @param[in] macp pointer to the @p MACDriver object
+ *
+ * @notapi
+ */
+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
+
+ /*
+ * 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[in] addr the register address
+ * @return The register value.
+ *
+ * @notapi
+ */
+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[in] addr the register address
+ * @param[in] value the new register value
+ *
+ * @notapi
+ */
+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 /* HAL_USE_MAC */
+
+/** @} */
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