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Diffstat (limited to 'os/hal/platforms/Rx62n/mac_lld.c')
-rw-r--r--os/hal/platforms/Rx62n/mac_lld.c667
1 files changed, 0 insertions, 667 deletions
diff --git a/os/hal/platforms/Rx62n/mac_lld.c b/os/hal/platforms/Rx62n/mac_lld.c
deleted file mode 100644
index 23788244d..000000000
--- a/os/hal/platforms/Rx62n/mac_lld.c
+++ /dev/null
@@ -1,667 +0,0 @@
-/*
- 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 RX62N/mac_lld.c
- * @brief RX62N low level MAC driver code.
- *
- * @addtogroup MAC
- * @{
- */
-
-#include <string.h>
-
-#include "ch.h"
-#include "hal.h"
-#include "mii.h"
-#include "rx62n_mii.h"
-
-#if HAL_USE_MAC || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/**
- * @brief Ethernet driver 1.
- */
-MACDriver ETHD1;
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-static const uint8_t default_mac_address[] = {0xAA, 0x55, 0x13,
- 0x37, 0x01, 0x10};
-
-__attribute__((aligned(16)))
-static rx62n_eth_rx_descriptor_t rd[EDMAC_RECEIVE_DESCRIPTORS];
-__attribute__((aligned(16)))
-static rx62n_eth_tx_descriptor_t td[EDMAC_TRANSMIT_DESCRIPTORS];
-
-__attribute__((aligned(32)))
-static uint8_t rb[EDMAC_RECEIVE_DESCRIPTORS * EDMAC_RECEIVE_BUFFERS_SIZE];
-__attribute__((aligned(32)))
-static uint8_t tb[EDMAC_TRANSMIT_DESCRIPTORS * EDMAC_TRANSMIT_BUFFERS_SIZE];
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-#if !defined(BOARD_PHY_ADDRESS)
-/**
- * @brief PHY address detection.
- *
- * @param[in] macp pointer to the @p MACDriver object
- */
-static void mii_find_phy(MACDriver *macp) {
- uint32_t i;
-#if RX62N_MAC_PHY_TIMEOUT > 0
- halrtcnt_t start = halGetCounterValue();
- halrtcnt_t timeout = start + MS2RTT(RX62N_MAC_PHY_TIMEOUT);
- while (halIsCounterWithin(start, timeout)) {
-#endif
- for (i = 0; i < 31; i++) {
- if ((miiGet(macp, MII_PHYSID1) == (BOARD_PHY_ID >> 16)) &&
- ((miiGet(macp, MII_PHYSID2) & 0xFFF0) == (BOARD_PHY_ID & 0xFFF0))) {
- return;
- }
- }
-#if RX62N_MAC_PHY_TIMEOUT > 0
- }
-#endif
- /* Wrong or defective board.*/
- chSysHalt();
-}
-#endif
-
-/**
- * @brief MAC address setup.
- *
- * @param[in] p pointer to a six bytes buffer containing the MAC
- * address
- */
-static void mac_lld_set_address(const uint8_t *p) {
-
- /* MAC address configuration, only a single address comparator is used,
- hash table not used.*/
- ETHERC.MAHR = ((uint32_t)p[0] << 24) |
- ((uint32_t)p[1] << 16) |
- ((uint32_t)p[2] << 8) |
- ((uint32_t)p[3] << 0);
- ETHERC.MALR.LONG = ((uint32_t)p[4] << 8) |
- ((uint32_t)p[5] << 0);
-}
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-static void serve_interrupt_ether1(void) {
- uint32_t eesr = EDMAC.EESR.LONG;
-
- if (eesr & (1<<18)) {
- /* Frame received.*/
- chSysLockFromIsr();
- chSemResetI(&ETHD1.rdsem, 0);
-#if MAC_USE_EVENTS
- chEvtBroadcastI(&ETHD1.rdevent);
-#endif
- chSysUnlockFromIsr();
- }
- if (eesr & (1<<21)) {
- /* Frame transmitted.*/
- chSysLockFromIsr();
- chSemResetI(&ETHD1.tdsem, 0);
- chSysUnlockFromIsr();
- }
- EDMAC.EESR.LONG = 0x47FF0F9F;
-}
-
-CH_IRQ_HANDLER(Excep_ETHER_EINT) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt_ether1();
-
- CH_IRQ_EPILOGUE();
-}
-
-
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level MAC initialization.
- *
- * @notapi
- */
-void mac_lld_init(void) {
-
- macObjectInit(&ETHD1);
- ETHD1.link_up = FALSE;
-
- /* Selection of the RMII or MII mode based on info exported by board.h.*/
-#if defined(BOARD_PHY_RMII)
- IOPORT.PFENET.BYTE = (1<<7)|(0<<4)|(1<<1);
-#else
- IOPORT.PFENET.BYTE = (1<<7)|(1<<4)|(1<<1);
-#endif
-
- /* MAC clocks temporary activation.*/
- MSTP(EDMAC) = 0;
-
- /* Reset of the MAC core.*/
- EDMAC.EDMR.BIT.SWR = 1;
- /* TODO: wait 64 cycles, here is 1ms delay */
- asm volatile ("mov.l #24000,r2 \n\t"
- "1: \n\t"
- "sub #1,r2 \n\t"
- "bne.b 1b \n\t");
- EDMAC.EDMR.BIT.DE = 1;
- /* Clear registers not affected by reset */
- EDMAC.RMFCR.LONG = 0;
- EDMAC.TFUCR.LONG = 0;
- EDMAC.RFOCR.LONG = 0;
-
- /* PHY address setup.*/
-#if defined(BOARD_PHY_ADDRESS)
- ETHD1.phyaddr = BOARD_PHY_ADDRESS;
-#else
- mii_find_phy(&ETHD1);
-#endif
-
-#if defined(BOARD_PHY_RESET)
- /* PHY board-specific reset procedure.*/
- BOARD_PHY_RESET();
-#else
- /* PHY soft reset procedure.*/
- miiPut(&ETHD1, MII_BMCR, BMCR_RESET);
-#if defined(BOARD_PHY_RESET_DELAY)
- halPolledDelay(BOARD_PHY_RESET_DELAY);
-#endif
- while (miiGet(&ETHD1, MII_BMCR) & BMCR_RESET)
- ;
-#endif
-
-#if RX62N_MAC_ETH1_CHANGE_PHY_STATE
- /* PHY in power down mode until the driver will be started.*/
- miiPut(&ETHD1, MII_BMCR, miiGet(&ETHD1, MII_BMCR) | BMCR_PDOWN);
-#endif
-
- /* MAC clocks stopped again.*/
- MSTP(EDMAC) = 1;
-}
-
-/**
- * @brief Configures and activates the MAC peripheral.
- *
- * @param[in] macp pointer to the @p MACDriver object
- *
- * @notapi
- */
-void mac_lld_start(MACDriver *macp) {
- unsigned i;
-
- /* Resets the state of all descriptors.*/
- for (i = 0; i < EDMAC_RECEIVE_DESCRIPTORS; i++) {
- rd[i].rd0 = /*RX62N_RD0_RFP_ONE|*/RX62N_RD0_RACT;
- rd[i].rd1 = EDMAC_RECEIVE_BUFFERS_SIZE<<16;
- rd[i].rd2 = (uint32_t)&rb[i * EDMAC_RECEIVE_BUFFERS_SIZE];
- }
- rd[i-1].rd0 |= RX62N_RD0_RDLE;
- macp->rxptr = (rx62n_eth_rx_descriptor_t *)rd;
- for (i = 0; i < EDMAC_TRANSMIT_DESCRIPTORS; i++) {
- td[i].td0 = RX62N_TD0_TFP_ONE;
- td[i].td1 = EDMAC_TRANSMIT_BUFFERS_SIZE<<16;
- td[i].td2 = (uint32_t)&tb[i * EDMAC_TRANSMIT_BUFFERS_SIZE];
- }
- td[i-1].td0 |= RX62N_TD0_TDLE;
- macp->txptr = (rx62n_eth_tx_descriptor_t *)td;
-
- /* MAC clocks activation.*/
- MSTP(EDMAC) = 0;
-
-#if RX62N_MAC_ETH1_CHANGE_PHY_STATE
- /* PHY in power up mode.*/
- miiPut(macp, MII_BMCR, miiGet(macp, MII_BMCR) & ~BMCR_PDOWN);
-#endif
-
- /* MAC configuration.*/
- ETHERC.RFLR.LONG = RX62N_MAC_BUFFERS_SIZE;
- /* Clear all status flags.*/
- ETHERC.ECSR.LONG = 0x37;
- ETHERC.ECSIPR.LONG = 0;
- ETHERC.IPGR.LONG = 0x14; /* Initial value.*/
-
- /* MAC address setup.*/
- if (macp->config->mac_address == NULL)
- mac_lld_set_address(default_mac_address);
- else
- mac_lld_set_address(macp->config->mac_address);
-
- /* Transmitter and receiver enabled.
- Note that the complete setup of the MAC is performed when the link
- status is detected.*/
- ETHERC.ECMR.LONG |= (ETHERC_ECMR_RE | ETHERC_ECMR_TE);
-
- /* ISR vector enabled.*/
- IEN(ETHER,EINT) = 1;
- IPR(ETHER,EINT) = RX62N_MAC_ETH1_IRQ_PRIORITY;
-
- /* DMA configuration:
- Descriptor list pointers.*/
- EDMAC.RDLAR = (void *)rd;
- EDMAC.TDLAR = (void *)td;
-
- /* Clear all status flags.*/
- EDMAC.EESR.LONG = 0x47FF0F9F;
- EDMAC.TFTR.LONG = 0;
- /* Set FIFO size to 2048.*/
- EDMAC.FDR.LONG = 0x707;
- EDMAC.RMCR.LONG = 1;
- EDMAC.RPADIR.LONG = 0;
-
- EDMAC.EESIPR.LONG = (1<<21)|(1<<18);
-
- EDMAC.EDRRR.BIT.RR = 1;
-}
-
-/**
- * @brief Deactivates the MAC peripheral.
- *
- * @param[in] macp pointer to the @p MACDriver object
- *
- * @notapi
- */
-void mac_lld_stop(MACDriver *macp) {
-
- if (macp->state != MAC_STOP) {
-#if RX62N_MAC_ETH1_CHANGE_PHY_STATE
- /* PHY in power down mode until the driver will be restarted.*/
- miiPut(macp, MII_BMCR, miiGet(macp, MII_BMCR) | BMCR_PDOWN);
-#endif
-
- /* MAC and DMA stopped.*/
- ETHERC.ECMR.LONG = 0;
-
- /* MAC clocks stopped.*/
- MSTP(EDMAC) = 1;
-
- /* ISR vector disabled.*/
- IEN(ETHER,EINT) = 0;
- }
-}
-
-/**
- * @brief Returns a transmission descriptor.
- * @details One of the available transmission descriptors is locked and
- * returned.
- *
- * @param[in] macp pointer to the @p MACDriver object
- * @param[out] tdp pointer to a @p MACTransmitDescriptor structure
- * @return The operation status.
- * @retval RDY_OK the descriptor has been obtained.
- * @retval RDY_TIMEOUT descriptor not available.
- *
- * @notapi
- */
-msg_t mac_lld_get_transmit_descriptor(MACDriver *macp,
- MACTransmitDescriptor *tdp) {
- rx62n_eth_tx_descriptor_t *tdes;
-
- if (!macp->link_up)
- return RDY_TIMEOUT;
-
- chSysLock();
-
- /* Get Current TX descriptor.*/
- tdes = macp->txptr;
-
- /* Ensure that descriptor isn't owned by the Ethernet DMA or locked by
- another thread.*/
- if ( (tdes->td0 & RX62N_TD0_TACT) || (tdes->td0 & RX62N_TD0_TLOCKED) ) {
- chSysUnlock();
- return RDY_TIMEOUT;
- }
-
- /* Marks the current descriptor as locked using a reserved bit.*/
- tdes->td0 |= RX62N_TD0_TLOCKED;
-
- /* Next TX descriptor to use.*/
- if (++macp->txptr >= &td[RX62N_MAC_TRANSMIT_BUFFERS]) {
- macp->txptr = &td[0];
- }
-
- chSysUnlock();
-
- /* Set the buffer size and configuration.*/
- tdp->offset = 0;
- tdp->size = RX62N_MAC_BUFFERS_SIZE;
- tdp->physdesc = tdes;
-
- return RDY_OK;
-}
-
-/**
- * @brief Releases a transmit descriptor and starts the transmission of the
- * enqueued data as a single frame.
- *
- * @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
- *
- * @notapi
- */
-void mac_lld_release_transmit_descriptor(MACTransmitDescriptor *tdp) {
-
- chSysLock();
-
- /* Unlocks the descriptor and returns it to the DMA engine.*/
- tdp->physdesc->td1 = tdp->offset<<16;
- tdp->physdesc->td0 &= ~RX62N_TD0_TLOCKED;
- tdp->physdesc->td0 |= RX62N_TD0_TACT;
- if (EDMAC.EDTRR.BIT.TR == 0)
- EDMAC.EDTRR.BIT.TR = 1;
-
- chSysUnlock();
-}
-
-/**
- * @brief Cleans an incomplete frame.
- *
- * @param[in] from the start position of the incomplete frame
- */
-static void cleanup(MACDriver *macp, rx62n_eth_rx_descriptor_t *from) {
-
- while (from != macp->rxptr) {
- from->rd0 = (from->rd0 & RX62N_RD0_RDLE) | RX62N_RD0_RACT;
- if (++from >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- from = rd;
- }
-}
-
-/**
- * @brief Returns a receive descriptor.
- *
- * @param[in] macp pointer to the @p MACDriver object
- * @param[out] rdp pointer to a @p MACReceiveDescriptor structure
- * @return The operation status.
- * @retval RDY_OK the descriptor has been obtained.
- * @retval RDY_TIMEOUT descriptor not available.
- *
- * @notapi
- */
-msg_t mac_lld_get_receive_descriptor(MACDriver *macp,
- MACReceiveDescriptor *rdp) {
-
- unsigned n;
- rx62n_eth_rx_descriptor_t *edp;
- n = EDMAC_RECEIVE_DESCRIPTORS;
- chSysLock();
-
- /*
- * Skips active buffers, if any.
- */
-skip:
- while ((n > 0) && (macp->rxptr->rd0 & RX62N_RD0_RACT)) {
- if (++macp->rxptr >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- macp->rxptr = rd;
- n--;
- }
-#if 0
- /*
- * Skips fragments, if any, cleaning them up.
- */
- while ((n > 0) && !(macp->rxptr->rd0 & RX62N_RD0_RACT) &&
- !(macp->rxptr->rd0 & RX62N_RD0_RFP_SOF)) {
- macp->rxptr->rd0 = (macp->rxptr->rd0 & RX62N_RD0_RDLE) | RX62N_RD0_RACT;
- if (++macp->rxptr >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- macp->rxptr = rd;
- n--;
- }
-#endif
- /*
- * Now compute the total frame size skipping eventual incomplete frames
- * or holes...
- */
-restart:
- edp = macp->rxptr;
- while (n > 0) {
-
- if (macp->rxptr->rd0 & RX62N_RD0_RACT) {
- /* Empty buffer for some reason... cleaning up the incomplete frame.*/
- cleanup(macp, edp);
- goto skip;
- }
- if ( ( macp->rxptr->rd0 & (RX62N_RD0_RFP_EOF|RX62N_RD0_RFE) )
- == (RX62N_RD0_RFP_EOF|RX62N_RD0_RFE) ) {
- /* End Of Frame found, but erroneous, so cleaning.*/
- if (++macp->rxptr >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- macp->rxptr = rd;
- n++;
- cleanup(macp, edp);
- goto skip;
- }
- /*
- * End Of Frame found.
- */
- if (macp->rxptr->rd0 & RX62N_RD0_RFP_EOF) {
- rdp->offset = 0;
- rdp->size = macp->rxptr->rd1 & 0xFFFF;
- rdp->physdesc = edp;
- if (++macp->rxptr >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- macp->rxptr = rd;
- if (EDMAC.EDRRR.BIT.RR == 0)
- EDMAC.EDRRR.BIT.RR = 1;
- chSysUnlock();
- return RDY_OK;
- }
-
- if ( (macp->rxptr != edp) && (macp->rxptr->rd0 & RX62N_RD0_RFP_MASK) ) {
- /* Found another start or ... cleaning up the incomplete frame.*/
- cleanup(macp, edp);
- goto restart; /* Another start buffer for some reason... */
- }
-
- if (++macp->rxptr >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- macp->rxptr = rd;
- n--;
- }
- if (EDMAC.EDRRR.BIT.RR == 0)
- EDMAC.EDRRR.BIT.RR = 1;
- chSysUnlock();
- return RDY_TIMEOUT;
-}
-
-/**
- * @brief Releases a receive descriptor.
- * @details The descriptor and its buffer are made available for more incoming
- * frames.
- *
- * @param[in] rdp the pointer to the @p MACReceiveDescriptor structure
- *
- * @notapi
- */
-void mac_lld_release_receive_descriptor(MACReceiveDescriptor *rdp) {
-
- bool_t done;
- rx62n_eth_rx_descriptor_t *edp = rdp->physdesc;
-
- unsigned n = EDMAC_RECEIVE_DESCRIPTORS;
- chSysLock();
- do {
- done = ((edp->rd0 & RX62N_RD0_RFP_EOF) != 0);
- edp->rd1 = EDMAC_RECEIVE_BUFFERS_SIZE<<16;
- edp->rd0 = (edp->rd0 & RX62N_RD0_RDLE) | RX62N_RD0_RACT;
- if (++edp >= &rd[EDMAC_RECEIVE_DESCRIPTORS])
- edp = rd;
- n--;
- }
- while ((n > 0) && !done);
- chSysUnlock();
-}
-
-/**
- * @brief Updates and returns the link status.
- *
- * @param[in] macp pointer to the @p MACDriver object
- * @return The link status.
- * @retval TRUE if the link is active.
- * @retval FALSE if the link is down.
- *
- * @notapi
- */
-bool_t mac_lld_poll_link_status(MACDriver *macp) {
- uint32_t ecmr, bmsr, bmcr;
-
- ecmr = ETHERC.ECMR.LONG;
-
- /* PHY CR and SR registers read.*/
- (void)miiGet(macp, MII_BMSR);
- bmsr = miiGet(macp, MII_BMSR);
- bmcr = miiGet(macp, MII_BMCR);
-
- /* Check on auto-negotiation mode.*/
- if (bmcr & BMCR_ANENABLE) {
- uint32_t lpa;
- /* Auto-negotiation must be finished without faults and link established.*/
- if ((bmsr & (BMSR_LSTATUS | BMSR_RFAULT | BMSR_ANEGCOMPLETE)) !=
- (BMSR_LSTATUS | BMSR_ANEGCOMPLETE))
- return macp->link_up = FALSE;
-
- /* Auto-negotiation enabled, checks the LPA register.*/
- lpa = miiGet(macp, MII_LPA);
-
- /* Check on link speed.*/
- if (lpa & (LPA_100HALF | LPA_100FULL | LPA_100BASE4))
- ecmr |= ETHERC_ECMR_RTM;
- else
- ecmr &= ~ETHERC_ECMR_RTM;
-
- /* Check on link mode.*/
- if (lpa & (LPA_10FULL | LPA_100FULL))
- ecmr |= ETHERC_ECMR_DM;
- else
- ecmr &= ~ETHERC_ECMR_DM;
- }
- else {
- /* Link must be established.*/
- if (!(bmsr & BMSR_LSTATUS))
- return macp->link_up = FALSE;
-
- /* Check on link speed.*/
- if (bmcr & BMCR_SPEED100)
- ecmr |= ETHERC_ECMR_RTM;
- else
- ecmr &= ~ETHERC_ECMR_RTM;
-
- /* Check on link mode.*/
- if (bmcr & BMCR_FULLDPLX)
- ecmr |= ETHERC_ECMR_DM;
- else
- ecmr &= ~ETHERC_ECMR_DM;
- }
-
- /* Changes the mode in the MAC.*/
- ETHERC.ECMR.LONG = ecmr;
-
- /* Returns the link status.*/
- return macp->link_up = TRUE;
-}
-
-/**
- * @brief Writes to a transmit descriptor's stream.
- *
- * @param[in] tdp pointer to a @p MACTransmitDescriptor structure
- * @param[in] buf pointer to the buffer containing the data to be
- * written
- * @param[in] size number of bytes to be written
- * @return The number of bytes written into the descriptor's
- * stream, this value can be less than the amount
- * specified in the parameter @p size if the maximum
- * frame size is reached.
- *
- * @notapi
- */
-size_t mac_lld_write_transmit_descriptor(MACTransmitDescriptor *tdp,
- uint8_t *buf,
- size_t size) {
-
- chDbgAssert(!(tdp->physdesc->td0 & RX62N_TD0_TACT),
- "mac_lld_write_transmit_descriptor(), #1",
- "attempt to write descriptor already owned by DMA");
-
- if (size > tdp->size - tdp->offset)
- size = tdp->size - tdp->offset;
-
- if (size > 0) {
- memcpy((uint8_t *)(tdp->physdesc->td2) + tdp->offset, buf, size);
- tdp->offset += size;
- }
-
- return size;
-}
-
-/**
- * @brief Reads from a receive descriptor's stream.
- *
- * @param[in] rdp pointer to a @p MACReceiveDescriptor structure
- * @param[in] buf pointer to the buffer that will receive the read data
- * @param[in] size number of bytes to be read
- * @return The number of bytes read from the descriptor's
- * stream, this value can be less than the amount
- * specified in the parameter @p size if there are
- * no more bytes to read.
- *
- * @notapi
- */
-size_t mac_lld_read_receive_descriptor(MACReceiveDescriptor *rdp,
- uint8_t *buf,
- size_t size) {
-/*
- chDbgAssert(!(rdp->physdesc->rd0 & RX62N_RD0_RACT),
- "mac_lld_read_receive_descriptor(), #1",
- "attempt to read descriptor already owned by DMA");
-*/
- if (size > rdp->size - rdp->offset)
- size = rdp->size - rdp->offset;
- if (size > 0) {
- uint8_t *src = (uint8_t *)(rdp->physdesc->rd2) +
- rdp->offset;
- uint8_t *limit = (uint8_t *)&rb[EDMAC_RECEIVE_DESCRIPTORS * EDMAC_RECEIVE_BUFFERS_SIZE];
- if (src >= limit) {
- src -= EDMAC_RECEIVE_DESCRIPTORS * EDMAC_RECEIVE_BUFFERS_SIZE;
- }
- if (src + size > limit ) {
- memcpy(buf, src, (size_t)(limit - src));
- memcpy(buf + (size_t)(limit - src), rb, size - (size_t)(limit - src));
- }
- else
- memcpy(buf, src, size);
- rdp->offset += size;
- }
- return size;
-
-}
-
-#endif /* HAL_USE_MAC */
-
-/** @} */
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