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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-05-01 02:14:21 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-05-01 02:14:21 +0000 |
commit | 75a2263679dd2e3bd6fc0f83a07ad8cca296a409 (patch) | |
tree | b52f1a73c0b44438000f4ebf2ab093e0e62291e0 /nuttx | |
parent | 02a432f58eb6e68dc015c34207d02c1977e513fa (diff) | |
download | px4-nuttx-75a2263679dd2e3bd6fc0f83a07ad8cca296a409.tar.gz px4-nuttx-75a2263679dd2e3bd6fc0f83a07ad8cca296a409.tar.bz2 px4-nuttx-75a2263679dd2e3bd6fc0f83a07ad8cca296a409.zip |
en28j60 driver code complete -- untested
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2639 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx')
-rwxr-xr-x | nuttx/drivers/net/enc28j60.c | 491 | ||||
-rwxr-xr-x | nuttx/drivers/net/enc28j60.h | 19 | ||||
-rw-r--r-- | nuttx/drivers/net/skeleton.c | 14 | ||||
-rwxr-xr-x | nuttx/include/nuttx/enc28j60.h | 135 |
4 files changed, 598 insertions, 61 deletions
diff --git a/nuttx/drivers/net/enc28j60.c b/nuttx/drivers/net/enc28j60.c index 3104f15aa..899e989a2 100755 --- a/nuttx/drivers/net/enc28j60.c +++ b/nuttx/drivers/net/enc28j60.c @@ -92,7 +92,13 @@ */ #ifndef CONFIG_ENC28J60_NINTERFACES -# define CONFIG_ENC28J60_NINTERFACES 1 +# define CONFIG_ENC28J60_NINTERFACES 1 +#endif + +/* CONFIG_NET_BUFSIZE must always be defined */ + +#if !defined(CONFIG_NET_BUFSIZE) && (CONFIG_NET_BUFSIZE <= MAX_FRAMELEN) +# error "CONFIG_NET_BUFSIZE is not valid for the ENC28J60" #endif /* We need to have the work queue to handle SPI interrupts */ @@ -101,6 +107,14 @@ # error "Worker thread support is required (CONFIG_SCHED_WORKQUEUE)" #endif +/* CONFIG_ENC28J60_DUMPPACKET will dump the contents of each packet to the console. */ + +#ifdef CONFIG_ENC28J60_DUMPPACKET +# define enc_dumppacket(m,a,n) lib_dumpbuffer(m,a,n) +#else +# define enc_dumppacket(m,a,n) +#endif + /* Timing *******************************************************************/ /* TX poll deley = 1 seconds. CLK_TCK is the number of clock ticks per second */ @@ -120,8 +134,10 @@ /* Packet memory layout */ +#define ALIGNED_BUFSIZE ((CONFIG_NET_BUFSIZE + 255) & ~255) + #define PKTMEM_TX_START 0x0000 /* Start TX buffer at 0 */ -#define PKTMEM_TX_ENDP1 0x0600 /* Allow TX buffer for one frame + */ +#define PKTMEM_TX_ENDP1 ALIGNED_BUFSIZE /* Allow TX buffer for one frame + */ #define PKTMEM_RX_START PKTMEM_TX_ENDP1 /* Followed by RX buffer */ #define PKTMEM_RX_END PKTMEM_END /* RX buffer goes to the end of SRAM */ @@ -178,13 +194,10 @@ struct enc_driver_s struct uip_driver_s dev; /* Interface understood by uIP */ + /* Statistics */ + #ifdef CONFIG_ENC28J60_STATS - uint8_t maxpktcnt; /* Max. number of buffered RX packets */ - uint32_t txifs; /* TXIF completion events */ - uint32_t txabrts; /* TXIF completions with ESTAT.TXABRT */ - uint32_t txerifs; /* TXERIF error events */ - uint32_t txtimeouts; /* S/W detected TX timeouts */ - uint32_t rxerifs; /* RXERIF error evernts */ + struct enc_stats_s stats; #endif }; @@ -246,6 +259,7 @@ static void enc_txif(FAR struct enc_driver_s *priv); static void enc_txerif(FAR struct enc_driver_s *priv); static void enc_txerif(FAR struct enc_driver_s *priv); static void enc_rxerif(FAR struct enc_driver_s *priv); +static void enc_rxdispath(FAR struct enc_driver_s *priv); static void enc_pktif(FAR struct enc_driver_s *priv); static void enc_worker(FAR void *arg); static int enc_interrupt(int irq, FAR void *context); @@ -278,6 +292,14 @@ static int enc_reset(FAR struct enc_driver_s *priv); * Description: * Configure the SPI for use with the ENC28J60 * + * Parameters: + * spi - Reference to the SPI driver structure + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static inline void enc_configspi(FAR struct spi_dev_s *spi) @@ -301,6 +323,14 @@ static inline void enc_configspi(FAR struct spi_dev_s *spi) * Description: * Select the SPI, locking and re-configuring if necessary * + * Parameters: + * spi - Reference to the SPI driver structure + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ #ifdef CONFIG_ENC28J60_OWNBUS @@ -338,6 +368,14 @@ static void enc_select(FAR struct spi_dev_s *spi) * Description: * De-select the SPI * + * Parameters: + * spi - Reference to the SPI driver structure + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ #ifdef CONFIG_ENC28J60_OWNBUS @@ -364,6 +402,15 @@ static void enc_deselect(FAR struct spi_dev_s *spi) * Read a global register (EIE, EIR, ESTAT, ECON2, or ECON1). The cmd * include the CMD 'OR'd with the the global address register. * + * Parameters: + * priv - Reference to the driver state structure + * cmd - The full command to received (cmd | address) + * + * Returned Value: + * The value read from the register + * + * Assumptions: + * ****************************************************************************/ static uint8_t enc_rdgreg2(FAR struct enc_driver_s *priv, uint8_t cmd) @@ -398,6 +445,16 @@ static uint8_t enc_rdgreg2(FAR struct enc_driver_s *priv, uint8_t cmd) * Write to a global register (EIE, EIR, ESTAT, ECON2, or ECON1). The cmd * include the CMD 'OR'd with the the global address register. * + * Parameters: + * priv - Reference to the driver state structure + * cmd - The full command to received (cmd | address) + * wrdata - The data to send + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_wrgreg2(FAR struct enc_driver_s *priv, uint8_t cmd, @@ -433,6 +490,15 @@ static void enc_wrgreg2(FAR struct enc_driver_s *priv, uint8_t cmd, * Assumption: * The caller has exclusive access to the SPI bus * + * Parameters: + * priv - Reference to the driver state structure + * bank - The bank to select (0-3) + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_setbank(FAR struct enc_driver_s *priv, uint8_t bank) @@ -464,6 +530,15 @@ static void enc_setbank(FAR struct enc_driver_s *priv, uint8_t bank) * Description: * Read from a banked control register using the RCR command. * + * Parameters: + * priv - Reference to the driver state structure + * ctrlreg - Bit encoded address of banked register to read + * + * Returned Value: + * The byte read from the banked register + * + * Assumptions: + * ****************************************************************************/ static uint8_t enc_rdbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg) @@ -512,6 +587,16 @@ static uint8_t enc_rdbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg) * reading, this same SPI sequence works for normal, MAC, and PHY * registers. * + * Parameters: + * priv - Reference to the driver state structure + * ctrlreg - Bit encoded address of banked register to write + * wrdata - The data to send + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_wrbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg, @@ -549,6 +634,17 @@ static void enc_wrbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg, * Wait until banked register bit(s) take a specific value (or a timeout * occurs). * + * Parameters: + * priv - Reference to the driver state structure + * ctrlreg - Bit encoded address of banked register to check + * bits - The bits to check (a mask) + * value - The value of the bits to return (value under mask) + * + * Returned Value: + * OK on success, negated errno on failure + * + * Assumptions: + * ****************************************************************************/ static int enc_waitbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg, @@ -577,6 +673,17 @@ static int enc_waitbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg, * Description: * Read a buffer of data. * + * Parameters: + * priv - Reference to the driver state structure + * buffer - A pointer to the buffer to read into + * buflen - The number of bytes to read + * + * Returned Value: + * None + * + * Assumptions: + * Read pointer is set to the correct address + * ****************************************************************************/ static void enc_rdbuffer(FAR struct enc_driver_s *priv, FAR uint8_t *buffer, @@ -610,6 +717,17 @@ static void enc_rdbuffer(FAR struct enc_driver_s *priv, FAR uint8_t *buffer, * Description: * Write a buffer of data. * + * Parameters: + * priv - Reference to the driver state structure + * buffer - A pointer to the buffer to write from + * buflen - The number of bytes to write + * + * Returned Value: + * None + * + * Assumptions: + * Read pointer is set to the correct address + * ****************************************************************************/ static void enc_wrbuffer(FAR struct enc_driver_s *priv, @@ -643,6 +761,15 @@ static void enc_wrbuffer(FAR struct enc_driver_s *priv, * Description: * Read 16-bits of PHY data. * + * Parameters: + * priv - Reference to the driver state structure + * phyaddr - The PHY register address + * + * Returned Value: + * 16-bit value read from the PHY + * + * Assumptions: + * ****************************************************************************/ static uint16_t enc_rdphy(FAR struct enc_driver_s *priv, uint8_t phyaddr) @@ -676,6 +803,16 @@ static uint16_t enc_rdphy(FAR struct enc_driver_s *priv, uint8_t phyaddr) * Description: * write 16-bits of PHY data. * + * Parameters: + * priv - Reference to the driver state structure + * phyaddr - The PHY register address + * phydata - 16-bit data to write to the PHY + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_wrphy(FAR struct enc_driver_s *priv, uint8_t phyaddr, @@ -699,8 +836,11 @@ static void enc_wrphy(FAR struct enc_driver_s *priv, uint8_t phyaddr, * Function: enc_transmit * * Description: - * Start hardware transmission. Called either from the txifs interrupt - * handling or from watchdog based polling. + * Start hardware transmission. Called either from: + * + * - pkif interrupt when an application responds to the receipt of data + * by trying to send something, or + * - From watchdog based polling. * * Parameters: * priv - Reference to the driver state structure @@ -714,20 +854,66 @@ static void enc_wrphy(FAR struct enc_driver_s *priv, uint8_t phyaddr, static int enc_transmit(FAR struct enc_driver_s *priv) { - /* Verify that the hardware is ready to send another packet */ -#warning "Missing logic" + uint16_t txend; /* Increment statistics */ - /* Disable Ethernet interrupts */ + nllvdbg("Sending packet, pktlen: %d\n", priv->dev.d_len); +#ifdef CONFIG_ENC28J60_STATS + priv->stats.txrequests++; +#endif + + /* Verify that the hardware is ready to send another packet. The driver + * start a transmission process by setting ECON1.TXRTS. When the packet is + * finished transmitting or is aborted due to an error/cancellation, the + * ECON1.TXRTS bit will be cleared. + * + * NOTE: If we got here, then we have committed to sending a packet. + * higher level logic must have assured that (1) there is no transmission + * in progress, and that (2) TX-related interrupts are disabled. + */ + DEBUGASSERT((enc_rdgreg(priv, ENC_ECON1) & ECON1_TXRTS) == 0); + /* Send the packet: address=priv->dev.d_buf, length=priv->dev.d_len */ - /* Restore Ethernet interrupts */ + enc_dumppacket("Transmit Packet", priv->dev.d_buf, priv->dev.d_len); + + /* Reset the write pointer to start of transmit buffer */ + + enc_wrbreg(priv, ENC_EWRPTL, PKTMEM_TX_START & 0xff); + enc_wrbreg(priv, ENC_EWRPTH, PKTMEM_TX_START >> 8); + + /* Set the TX End pointer based on the size of the packet to send */ + + txend = PKTMEM_TX_START + priv->dev.d_len; + enc_wrbreg(priv, ENC_ETXNDL, txend & 0xff); + enc_wrbreg(priv, ENC_ETXNDH, txend >> 8); + + /* Write the per-packet control byte into the transmit buffer */ + + enc_wrgreg(priv, ENC_WBM, 0x00); + + /* Copy the packet itself into the transmit buffer */ + + enc_wrbuffer(priv, priv->dev.d_buf, priv->dev.d_len); + + /* Set TXRTS to send the packet in the transmit buffer */ + + enc_bfsgreg(priv, ENC_ECON1, ECON1_TXRTS); - /* Setup the TX timeout watchdog (perhaps restarting the timer) */ + /* Setup the TX timeout watchdog (perhaps restarting the timer). Note: + * Is there a race condition. Could the TXIF interrupt occur before + * the timer is started? + */ (void)wd_start(priv->txtimeout, ENC_TXTIMEOUT, enc_txtimeout, 1, (uint32_t)priv); + + /* Increment statistics */ + +#ifdef CONFIG_ENC28J60_STATS + priv->txqueued++; +#endif return OK; } @@ -760,22 +946,22 @@ static int enc_uiptxpoll(struct uip_driver_s *dev) * the field d_len is set to a value > 0. */ + nllvdbg("Poll result: d_len=%d\n", priv->ld_dev.d_len); if (priv->dev.d_len > 0) { uip_arp_out(&priv->dev); enc_transmit(priv); - /* Check if there is room in the device to hold another packet. If not, - * return a non-zero value to terminate the poll. - */ -#warning "Missing logic" + /* Stop the poll now because we can queue only one packet */ + + return -EBUSY; } /* If zero is returned, the polling will continue until all connections have * been examined. */ - return 0; + return OK; } /**************************************************************************** @@ -785,11 +971,23 @@ static int enc_uiptxpoll(struct uip_driver_s *dev) * The current link status can be obtained from the PHSTAT1.LLSTAT or * PHSTAT2.LSTAT. * + * Parameters: + * priv - Reference to the driver state structure + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_linkstatus(FAR struct enc_driver_s *priv) { -#warning "Missing logic" +#if 0 + uint16_t regval = enc_rdphy(priv, PHSTAT2); + priv->duplex = ((regval & PHSTAT2_DPXSTAT) != 0); + priv->carrier = ((regval & PHSTAT2_LSTAT) != 0); +#endif } /**************************************************************************** @@ -814,10 +1012,10 @@ static void enc_txif(FAR struct enc_driver_s *priv) /* Update statistics */ #ifdef CONFIG_ENC28J60_STATS - priv->txifs++; + priv->stats.txifs++; if (enc_rdgreg(priv, ENC_ESTAT) & ESTAT_TXABRT) { - priv->txabrts++; + priv->stats.txabrts++; } #endif @@ -855,7 +1053,7 @@ static void enc_txerif(FAR struct enc_driver_s *priv) /* Update statistics */ #ifdef CONFIG_ENC28J60_STATS - priv->txerifs++; + priv->stats.txerifs++; #endif /* Reset TX */ @@ -873,6 +1071,10 @@ static void enc_txerif(FAR struct enc_driver_s *priv) * set, then we need to transmit. * 3. Retranmit by resetting ECON1_TXRTS. */ + +#ifdef CONFIG_ENC28J60_HALFDUPLEX +# error "Missing logic for half duplex" +#endif } /**************************************************************************** @@ -897,15 +1099,15 @@ static void enc_rxerif(FAR struct enc_driver_s *priv) /* Update statistics */ #ifdef CONFIG_ENC28J60_STATS - priv->rxerifs++; + priv->stats.rxerifs++; #endif } /**************************************************************************** - * Function: enc_pktif + * Function: enc_rxdispath * * Description: - * An interrupt was received indicating the availability of a new RX packet + * Give the newly received packet to uIP. * * Parameters: * priv - Reference to the driver state structure @@ -917,20 +1119,9 @@ static void enc_rxerif(FAR struct enc_driver_s *priv) * ****************************************************************************/ -static void enc_pktif(FAR struct enc_driver_s *priv) +static void enc_rxdispath(FAR struct enc_driver_s *priv) { - /* Check for errors and update statistics */ -#warning "Missing logic" - - /* Check if the packet is a valid size for the uIP buffer configuration */ -#warning "Missing logic" - - /* Copy the data data from the hardware to priv->dev.d_buf. Set - * amount of data in priv->dev.d_len - */ -#warning "Missing logic" - - /* We only accept IP packets of the configured type and ARP packets */ + /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv6 if (BUF->type == HTONS(UIP_ETHTYPE_IP6)) @@ -938,6 +1129,7 @@ static void enc_pktif(FAR struct enc_driver_s *priv) if (BUF->type == HTONS(UIP_ETHTYPE_IP)) #endif { + nllvdbg("IP packet received (%02x)\n", ETHBUF->type); uip_arp_ipin(); uip_input(&priv->dev); @@ -953,6 +1145,7 @@ static void enc_pktif(FAR struct enc_driver_s *priv) } else if (BUF->type == htons(UIP_ETHTYPE_ARP)) { + nllvdbg("ARP packet received (%02x)\n", ETHBUF->type); uip_arp_arpin(&priv->dev); /* If the above function invocation resulted in data that should be @@ -964,6 +1157,115 @@ static void enc_pktif(FAR struct enc_driver_s *priv) enc_transmit(priv); } } + else + { + nlldbg("Unsupported packet type dropped (%02x)\n", htons(ETHBUF->type)); + } +} + +/**************************************************************************** + * Function: enc_pktif + * + * Description: + * An interrupt was received indicating the availability of a new RX packet + * + * Parameters: + * priv - Reference to the driver state structure + * + * Returned Value: + * None + * + * Assumptions: + * + ****************************************************************************/ + +static void enc_pktif(FAR struct enc_driver_s *priv) +{ + uint8_t rsv[6]; + uint16_t pktlen; + uint16_t rxstat; + + /* Update statistics */ + +#ifdef CONFIG_ENC28J60_STATS + priv->stats.pktifs++; +#endif + + /* Set the read pointer to the start of the received packet */ + + DEBUGASSERT(priv->nextpkt <= PKTMEM_RX_END); + enc_wrbreg(priv, ENC_ERDPTL, (priv->nextpkt)); + enc_wrbreg(priv, ENC_ERDPTH, (priv->nextpkt) >> 8); + + /* Read the next packet pointer and the 4 byte read status vector (RSV) + * at the beginning of the received packet + */ + + enc_rdbuffer(priv, rsv, 6); + + /* Decode the new next packet pointer, and the RSV. The + * RSV is encoded as: + * + * Bits 0-15: Indicates length of the received frame. This includes the + * destination address, source address, type/length, data, + * padding and CRC fields. This field is stored in little- + * endian format. + * Bits 16-31: Bit encoded RX status. + */ + + priv->nextpkt = (uint16_t)rsv[1] << 8 | (uint16_t)rsv[0]; + pktlen = (uint16_t)rsv[3] << 8 | (uint16_t)rsv[2]; + rxstat = (uint16_t)rsv[5] << 8 | (uint16_t)rsv[4]; + nllvdbg("Receiving packet, pktlen: %d\n", pktlen); + + /* Check if the packet was received OK */ + + if ((rxstat & RXSTAT_OK) == 0) + { + nlldbg("ERROR: RXSTAT: %04x\n", RXSTAT); +#ifdef CONFIG_ENC28J60_STATS + priv->stats.rxnotok++; +#endif + } + + /* Check for a usable packet length (4 added for the CRC) */ + + else if (pktlen > (CONFIG_NET_BUFSIZE + 4) || pktlen <= (UIP_LLH_LEN + 4)) + { + nlldbg("Bad packet size dropped (%d)\n", pktlen); +#ifdef CONFIG_ENC28J60_STATS + priv->stats.rxpktlen++; +#endif + } + + /* Otherwise, read and process the packet */ + + else + { + /* Save the packet length (without the 4 byte CRC) in priv->dev.d_len*/ + + priv->dev.d_len = pktlen - 4; + + /* Copy the data data from the receive buffer to priv->dev.d_buf */ + + enc_rdbuffer(priv, priv->dev.d_buf, priv->dev.d_len); + enc_dumppacket("Received Packet", priv->ld_dev.d_buf, priv->ld_dev.d_len); + + /* Dispatch the packet to uIP */ + + enc_rxdispath(priv); + } + + /* Move the RX read pointer to the start of the next received packet. + * This frees the memory we just read. + */ + + enc_wrbreg(priv, ENC_ERXRDPTL, (priv->nextpkt)); + enc_wrbreg(priv, ENC_ERXRDPTH, (priv->nextpkt) >> 8); + + /* Decrement the packet counter indicate we are done with this packet */ + + enc_bfsgreg(priv, ENC_ECON2, ECON2_PKTDEC); } /**************************************************************************** @@ -1122,9 +1424,9 @@ static void enc_worker(FAR void *arg) if (pktcnt > 0) { #ifdef CONFIG_ENC28J60_STATS - if (pkcnt > priv->maxpktcnt) + if (pkcnt > priv->stats.maxpktcnt) { - priv->maxpktcnt = pktcnt; + priv->stats.maxpktcnt = pktcnt; } #endif /* Handle packet receipt */ @@ -1161,9 +1463,7 @@ static void enc_worker(FAR void *arg) } - /* Enable Ethernet interrupts (perhaps excluding the TX done interrupt if - * there are no pending transmissions. - */ + /* Enable Ethernet interrupts */ enc_bfsgreg(priv, ENC_EIE, EIE_INTIE); } @@ -1236,11 +1536,12 @@ static void enc_txtimeout(int argc, uint32_t arg, ...) /* Increment statistics and dump debug info */ + nlldbg("Tx timeout\n"); #ifdef CONFIG_ENC28J60_STATS - priv->txtimeouts++; + priv->stats.txtimeouts++; #endif - /* Then reset the hardware. Take the interface down, then bring it + /* Then reset the hardware: Take the interface down, then bring it * back up */ @@ -1275,11 +1576,21 @@ static void enc_polltimer(int argc, uint32_t arg, ...) { FAR struct enc_driver_s *priv = (FAR struct enc_driver_s *)arg; - /* Check if there is room in the send another TXr packet. */ + /* Verify that the hardware is ready to send another packet. The driver + * start a transmission process by setting ECON1.TXRTS. When the packet is + * finished transmitting or is aborted due to an error/cancellation, the + * ECON1.TXRTS bit will be cleared. + */ - /* If so, update TCP timing states and poll uIP for new XMIT data */ + if ((enc_rdgreg(priv, ENC_ECON1) & ECON1_TXRTS) == 0) + { + /* Yes.. update TCP timing states and poll uIP for new XMIT data. Hmmm.. + * looks like a bug here to me. Does this mean if there is a transmit + * in progress, we will missing TCP time state updates? + */ - (void)uip_timer(&priv->dev, enc_uiptxpoll, ENC_POLLHSEC); + (void)uip_timer(&priv->dev, enc_uiptxpoll, ENC_POLLHSEC); + } /* Setup the watchdog poll timer again */ @@ -1322,19 +1633,28 @@ static int enc_ifup(struct uip_driver_s *dev) enc_setmacaddr(priv); enc_pwrfull(priv); - /* Enable interrutps */ + /* Enable interrupts at the ENC28J60. Interrupts are still disabled + * at the interrupt controller. + */ + enc_wrphy(priv, ENC_PHIE, PHIE_PGEIE | PHIE_PLNKIE); enc_bfsgreg(priv, ENC_EIE, EIE_INTIE | EIE_PKTIE); + enc_bfsgreg(priv, ENC_EIR, EIR_DMAIF | EIR_LINKIF | EIR_TXIF | + EIR_TXERIF | EIR_RXERIF | EIR_PKTIF); + enc_wrgreg(priv, ENC_EIE, EIE_INTIE | EIE_PKTIE | EIE_LINKIE | + EIE_TXIE | EIE_TXERIE | EIE_RXERIE); - /* Enable packet reception */ + /* Enable the receiver */ - enc_bfsgreg(priv, ENC_ECON1, ECON1_RXEN); + enc_bfsgreg(priv, ENC_ECON1, ECON1_RXEN); /* Set and activate a timer process */ (void)wd_start(priv->txpoll, ENC_WDDELAY, enc_polltimer, 1, (uint32_t)priv); - /* Enable the Ethernet interrupt */ + /* Mark the interface up and enable the Ethernet interrupt at the + * controller + */ priv->bifup = true; up_enable_irq(priv->irq); @@ -1364,6 +1684,10 @@ static int enc_ifdown(struct uip_driver_s *dev) irqstate_t flags; int ret; + nlldbg("Taking down: %d.%d.%d.%d\n", + dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff, + (dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24 ); + /* Disable the Ethernet interrupt */ flags = irqsave(); @@ -1449,6 +1773,14 @@ static int enc_txavail(struct uip_driver_s *dev) * by the host controller. Additionally, the clock driver will continue * to operate. The CLKOUT function will be unaffected. * + * Parameters: + * priv - Reference to the driver state structure + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_pwrsave(FAR struct enc_driver_s *priv) @@ -1499,6 +1831,14 @@ static void enc_pwrsave(FAR struct enc_driver_s *priv) * Alternatively, the link change interrupt may be used if it is * enabled. * + * Parameters: + * priv - Reference to the driver state structure + * + * Returned Value: + * None + * + * Assumptions: + * ****************************************************************************/ static void enc_pwrfull(FAR struct enc_driver_s *priv) @@ -1674,8 +2014,8 @@ static int enc_reset(FAR struct enc_driver_s *priv) /* Set the maximum packet size which the controller will accept */ - enc_wrbreg(priv, ENC_MAMXFLL, MAX_FRAMELEN & 0xff); - enc_wrbreg(priv, ENC_MAMXFLH, MAX_FRAMELEN >> 8); + enc_wrbreg(priv, ENC_MAMXFLL, CONFIG_NET_BUFSIZE & 0xff); + enc_wrbreg(priv, ENC_MAMXFLH, CONFIG_NET_BUFSIZE >> 8); /* Configure LEDs (No, just use the defaults for now) */ /* enc_wrphy(priv, ENC_PHLCON, ??); */ @@ -1717,8 +2057,6 @@ static int enc_reset(FAR struct enc_driver_s *priv) * ****************************************************************************/ -/* Initialize the Ethernet controller and driver */ - int enc_initialize(FAR struct spi_dev_s *spi, unsigned int devno, unsigned int irq) { FAR struct enc_driver_s *priv ; @@ -1766,5 +2104,42 @@ int enc_initialize(FAR struct spi_dev_s *spi, unsigned int devno, unsigned int i return ret; } +/**************************************************************************** + * Function: enc_stats + * + * Description: + * Return accumulated ENC28J60 statistics. Statistics are cleared after + * being returned. + * + * Parameters: + * devno - If more than one ENC28J60 is supported, then this is the + * zero based number that identifies the ENC28J60; + * stats - The user-provided location to return the statistics. + * + * Returned Value: + * OK on success; Negated errno on failure. + * + * Assumptions: + * + ****************************************************************************/ + +#ifdef CONFIG_ENC28J60_STATS +int enc_stats(unsigned int devno, struct enc_stats_s *stats) +{ + FAR struct enc_driver_s *priv ; + irqstate_t flags; + + DEBUGASSERT(devno < CONFIG_ENC28J60_NINTERFACES); + priv = &g_enc28j60[devno]; + + /* Disable the Ethernet interrupt */ + + flags = irqsave(); + memcpy(stats, &priv->stats, sizeof(struct enc_stats_s)); + memset(&priv->stats, 0, sizeof(struct enc_stats_s)); + irqrestore(flags); + return OK; +} +#endif #endif /* CONFIG_NET && CONFIG_ENC28J60_NET */ diff --git a/nuttx/drivers/net/enc28j60.h b/nuttx/drivers/net/enc28j60.h index b4f6ef01e..408224b22 100755 --- a/nuttx/drivers/net/enc28j60.h +++ b/nuttx/drivers/net/enc28j60.h @@ -432,6 +432,25 @@ #define PKTCTRL_PPADEN (1 << 2) /* Bit 2: Per Packet Padding Enable */ #define PKTCTRL_PHUGEEN (1 << 3) /* Bit 3: Per Packet Huge Frame Enable */ +/* RX Status Bit Definitions ************************************************/ + +#define RXSTAT_LDEVENT (1 << 0) /* Bit 0: Long event or pack dropped */ + /* Bit 1: Reserved */ +#define RXSTAT_CEPS (1 << 2) /* Bit 2: Carrier event previously seen */ + /* Bit 3: Reserved */ +#define RXSTAT_CRCERROR (1 << 4) /* Bit 4: Frame CRC field bad */ +#define RXSTAT_LENERROR (1 << 5) /* Bit 5: Packet length != data length */ +#define RXSTAT_LENRANGE (1 << 6) /* Bit 6: Type/length field > 1500 bytes */ +#define RXSTAT_OK (1 << 7) /* Bit 7: Packet with valid CRC and no symbol errors */ +#define RXSTAT_MCAST (1 << 8) /* Bit 8: Packet with multicast address */ +#define RXSTAT_BCAST (1 << 9) /* Bit 9: Packet with broadcast address */ +#define RXSTAT_DRIBBLE (1 << 10) /* Bit 10: Additional bits received after packet */ +#define RXSTAT_CTRLFRAME (1 << 11) /* Bit 11: Control frame with valid type/length */ +#define RXSTAT_PAUSE (1 << 12) /* Bit 12: Control frame with pause frame opcde */ +#define RXSTAT_UNKOPCODE (1 << 13) /* Bit 13: Control frame with unknown opcode */ +#define RXSTAT_VLANTYPE (1 << 14) /* Bit 14: Current frame is a VLAN tagged frame */ + /* Bit 15: Zero */ + /**************************************************************************** * Public Types ****************************************************************************/ diff --git a/nuttx/drivers/net/skeleton.c b/nuttx/drivers/net/skeleton.c index 00ec39334..f94799ba8 100644 --- a/nuttx/drivers/net/skeleton.c +++ b/nuttx/drivers/net/skeleton.c @@ -154,7 +154,10 @@ static int skel_txavail(struct uip_driver_s *dev); static int skel_transmit(FAR struct skel_driver_s *skel) { - /* Verify that the hardware is ready to send another packet */ + /* Verify that the hardware is ready to send another packet. If we get + * here, then we are committed to sending a packet; Higher level logic + * must have assured that there is not transmission in progress. + */ /* Increment statistics */ @@ -405,9 +408,14 @@ static void skel_polltimer(int argc, uint32_t arg, ...) { FAR struct skel_driver_s *skel = (FAR struct skel_driver_s *)arg; - /* Check if there is room in the send another TXr packet. */ + /* Check if there is room in the send another TX packet. We cannot perform + * the TX poll if he are unable to accept another packet for transmission. + */ - /* If so, update TCP timing states and poll uIP for new XMIT data */ + /* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm.. + * might be bug here. Does this mean if there is a transmit in progress, + * we will missing TCP time state updates? + */ (void)uip_timer(&skel->sk_dev, skel_uiptxpoll, skeleton_POLLHSEC); diff --git a/nuttx/include/nuttx/enc28j60.h b/nuttx/include/nuttx/enc28j60.h new file mode 100755 index 000000000..5edba605e --- /dev/null +++ b/nuttx/include/nuttx/enc28j60.h @@ -0,0 +1,135 @@ +/**************************************************************************** + * include/nuttx/enc28j60.h + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#ifndef __INCLUDE_NUTTX_ENC28J60_H +#define __INCLUDE_NUTTX_ENC28J60_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdint.h> +#include <stdbool.h> + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/* This structure returns driver statistics (if enabled) */ + +#ifdef CONFIG_ENC28J60_STATS +struct enc_stats_s +{ + uint8_t maxpktcnt; /* Max. number of buffered RX packets */ + uint32_t txrequests; /* Number of TX packets queued */ + uint32_t txifs; /* TXIF completion events */ + uint32_t txabrts; /* TXIF completions with ESTAT.TXABRT */ + uint32_t txerifs; /* TXERIF error events */ + uint32_t txtimeouts; /* S/W detected TX timeouts */ + uint32_t pktifs; /* PKTIF RX completion events */ + uint32_t rxnotok; /* PKTIF without RXSTAT_OK */ + uint32_t rxpktlen; /* PKTIF with bad pktlen */ + uint32_t rxerifs; /* RXERIF error evernts */ +}; +#endif + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Function: enc_initialize + * + * Description: + * Initialize the Ethernet driver. The ENC28J60 device is assumed to be + * in the post-reset state upon entry to this function. + * + * Parameters: + * spi - A reference to the platform's SPI driver for the ENC28J60 + * devno - If more than one ENC28J60 is supported, then this is the + * zero based number that identifies the ENC28J60; + * irq - The fully configured GPIO IRQ that ENC28J60 interrupts will be + * asserted on. This driver will attach and entable this IRQ. + * + * Returned Value: + * OK on success; Negated errno on failure. + * + * Assumptions: + * + ****************************************************************************/ + +EXTERN int enc_initialize(FAR struct spi_dev_s *spi, unsigned int devno, + unsigned int irq); + +/**************************************************************************** + * Function: enc_stats + * + * Description: + * Return accumulated ENC28J60 statistics. Statistics are cleared after + * being returned. + * + * Parameters: + * devno - If more than one ENC28J60 is supported, then this is the + * zero based number that identifies the ENC28J60; + * stats - The user-provided location to return the statistics. + * + * Returned Value: + * OK on success; Negated errno on failure. + * + * Assumptions: + * + ****************************************************************************/ + +#ifdef CONFIG_ENC28J60_STATS +EXTERN int enc_stats(unsigned int devno, struct enc_stats_s *stats); +#endif + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __INCLUDE_NUTTX_ENC28J60_H */ |