diff options
Diffstat (limited to 'bsps/powerpc/tqm8xx/net/network_scc.c')
| -rw-r--r-- | bsps/powerpc/tqm8xx/net/network_scc.c | 1049 |
1 files changed, 0 insertions, 1049 deletions
diff --git a/bsps/powerpc/tqm8xx/net/network_scc.c b/bsps/powerpc/tqm8xx/net/network_scc.c deleted file mode 100644 index e263beba40..0000000000 --- a/bsps/powerpc/tqm8xx/net/network_scc.c +++ /dev/null @@ -1,1049 +0,0 @@ -/*===============================================================*\ -| Project: RTEMS TQM8xx BSP | -+-----------------------------------------------------------------+ -| This file has been adapted to MPC8xx by | -| Thomas Doerfler <Thomas.Doerfler@embedded-brains.de> | -| Copyright (c) 2008 | -| Embedded Brains GmbH | -| Obere Lagerstr. 30 | -| D-82178 Puchheim | -| Germany | -| rtems@embedded-brains.de | -| | -| See the other copyright notice below for the original parts. | -+-----------------------------------------------------------------+ -| The license and distribution terms for this file may be | -| found in the file LICENSE in this distribution or at | -| | -| http://www.rtems.org/license/LICENSE. | -| | -+-----------------------------------------------------------------+ -| this file contains the console driver | -\*===============================================================*/ -/* derived from: */ -/* - * RTEMS/TCPIP driver for MPC8xx SCC1 Ethernet - * - * Modified for MPC860 by Jay Monkman (jmonkman@frasca.com) - * - * This supports Ethernet on either SCC1 or the FEC of the MPC860T. - * Right now, we only do 10 Mbps, even with the FEC. The function - * rtems_enet_driver_attach determines which one to use. Currently, - * only one may be used at a time. - * - * Based on the MC68360 network driver by - * W. Eric Norum - * Saskatchewan Accelerator Laboratory - * University of Saskatchewan - * Saskatoon, Saskatchewan, CANADA - * eric@skatter.usask.ca - * - * This supports ethernet on SCC1. Right now, we only do 10 Mbps. - * - * Modifications by Darlene Stewart <Darlene.Stewart@iit.nrc.ca> - * and Charles-Antoine Gauthier <charles.gauthier@iit.nrc.ca> - * Copyright (c) 1999, National Research Council of Canada - */ - -#include <machine/rtems-bsd-kernel-space.h> - -#include <bsp.h> -#include <stdio.h> -#include <errno.h> -#include <rtems/error.h> -#include <rtems/rtems_bsdnet.h> - -#include <sys/param.h> -#include <sys/mbuf.h> -#include <sys/socket.h> -#include <sys/sockio.h> - -#include <net/if.h> - -#include <netinet/in.h> -#include <netinet/if_ether.h> -#include <bsp/irq.h> - -#include <sys/types.h> -#include <sys/socket.h> - -/* - * Number of interfaces supported by this driver - */ -#define NIFACES 1 - -/* - * Default number of buffer descriptors set aside for this driver. - * The number of transmit buffer descriptors has to be quite large - * since a single frame often uses four or more buffer descriptors. - */ -#define RX_BUF_COUNT 32 -#define TX_BUF_COUNT 8 -#define TX_BD_PER_BUF 4 - -#define INET_ADDR_MAX_BUF_SIZE (sizeof "255.255.255.255") - -/* - * RTEMS event used by interrupt handler to signal daemons. - * This must *not* be the same event used by the TCP/IP task synchronization. - */ -#define INTERRUPT_EVENT RTEMS_EVENT_1 - -/* - * RTEMS event used to start transmit daemon. - * This must not be the same as INTERRUPT_EVENT. - */ -#define START_TRANSMIT_EVENT RTEMS_EVENT_2 - -/* - * Receive buffer size -- Allow for a full ethernet packet plus CRC (1518). - * Round off to nearest multiple of RBUF_ALIGN. - */ -#define MAX_MTU_SIZE 1518 -#define RBUF_ALIGN 4 -#define RBUF_SIZE ((MAX_MTU_SIZE + RBUF_ALIGN) & ~RBUF_ALIGN) - -#if (MCLBYTES < RBUF_SIZE) -# error "Driver must have MCLBYTES > RBUF_SIZE" -#endif - -/* - * Per-device data - */ -struct m8xx_enet_struct { - struct arpcom arpcom; - struct mbuf **rxMbuf; - struct mbuf **txMbuf; - int acceptBroadcast; - int rxBdCount; - int txBdCount; - int txBdHead; - int txBdTail; - int txBdActiveCount; - m8xxBufferDescriptor_t *rxBdBase; - m8xxBufferDescriptor_t *txBdBase; - rtems_id rxDaemonTid; - rtems_id txDaemonTid; - - /* - * Statistics - */ - unsigned long rxInterrupts; - unsigned long rxNotFirst; - unsigned long rxNotLast; - unsigned long rxGiant; - unsigned long rxNonOctet; - unsigned long rxRunt; - unsigned long rxBadCRC; - unsigned long rxOverrun; - unsigned long rxCollision; - - unsigned long txInterrupts; - unsigned long txDeferred; - unsigned long txHeartbeat; - unsigned long txLateCollision; - unsigned long txRetryLimit; - unsigned long txUnderrun; - unsigned long txLostCarrier; - unsigned long txRawWait; -}; -static struct m8xx_enet_struct enet_driver[NIFACES]; - -static void m8xx_scc1_ethernet_on(const rtems_irq_connect_data* ptr) -{ -} - -static void m8xx_scc1_ethernet_off(const rtems_irq_connect_data* ptr) -{ - /* - * Please put relevant code there - */ -} - -static int m8xx_scc1_ethernet_isOn(const rtems_irq_connect_data* ptr) -{ - /* - * Assume, that we are on - */ - return 1; -} - -/* - * SCC1 interrupt handler - */ -static void m8xx_scc1_interrupt_handler (void *unused) -{ - /* Frame received? */ - if ((m8xx.scc1.sccm & 0x8) && (m8xx.scc1.scce & 0x8)) { - m8xx.scc1.scce = 0x8; /* Clear receive frame int */ - m8xx.scc1.sccm &= ~0x8; /* Disable receive frame ints */ - enet_driver[0].rxInterrupts++; /* Rx int has occurred */ - rtems_bsdnet_event_send (enet_driver[0].rxDaemonTid, INTERRUPT_EVENT); - } - - /* Buffer transmitted or transmitter error? */ - if ((m8xx.scc1.sccm & 0x12) && (m8xx.scc1.scce & 0x12)) { - m8xx.scc1.scce = 0x12; /* Clear Tx int */ - m8xx.scc1.sccm &= ~0x12; /* Disable Tx ints */ - enet_driver[0].txInterrupts++; /* Tx int has occurred */ - rtems_bsdnet_event_send (enet_driver[0].txDaemonTid, INTERRUPT_EVENT); - } -} - - -static rtems_irq_connect_data ethernetSCC1IrqData = { - BSP_CPM_IRQ_SCC1, - (rtems_irq_hdl) m8xx_scc1_interrupt_handler, - NULL, - m8xx_scc1_ethernet_on, - m8xx_scc1_ethernet_off, - m8xx_scc1_ethernet_isOn -}; - -/* - * Initialize the ethernet hardware - */ -static void -m8xx_enet_initialize (struct m8xx_enet_struct *sc) -{ - int i; - unsigned char *hwaddr; - - /* - * Configure port A - * PA15 is enet RxD. Set PAPAR(15) to 1, PADIR(15) to 0. - * PA14 is enet TxD. Set PAPAR(14) to 1, PADIR(14) to 0, PAODR(14) to 0. - * PA7 is input CLK1. Set PAPAR(7) to 1, PADIR(7) to 0. - * PA6 is input CLK2. Set PAPAR(6) to 1, PADIR(6) to 0. - */ - m8xx.papar |= 0x303; - m8xx.padir &= ~0x303; - m8xx.paodr &= ~0x2; - - /* - * Configure port C - * PC11 is CTS1*. Set PCPAR(11) to 0, PCDIR(11) to 0, and PCSO(11) to 1. - * PC10 is CD1*. Set PCPAR(10) to 0, PCDIR(10) to 0, and PCSO(10) to 1. - */ - m8xx.pcpar &= ~0x30; - m8xx.pcdir &= ~0x30; - m8xx.pcso |= 0x30; - - /* - * Connect CLK1 and CLK2 to SCC1 in the SICR. - * CLK1 is TxClk, CLK2 is RxClk. No grant mechanism, SCC1 is directly - * connected to the NMSI pins. - * R1CS = 0b101 (CLK2) - * T1CS = 0b100 (CLK1) - */ - m8xx.sicr |= 0x2C; - - /* - * Initialize SDMA configuration register - */ - m8xx.sdcr = 1; - - /* - * Allocate mbuf pointers - */ - sc->rxMbuf = malloc (sc->rxBdCount * sizeof *sc->rxMbuf, - M_MBUF, M_NOWAIT); - sc->txMbuf = malloc (sc->txBdCount * sizeof *sc->txMbuf, - M_MBUF, M_NOWAIT); - if (!sc->rxMbuf || !sc->txMbuf) - rtems_panic ("No memory for mbuf pointers"); - - /* - * Set receiver and transmitter buffer descriptor bases - */ - sc->rxBdBase = m8xx_bd_allocate(sc->rxBdCount); - sc->txBdBase = m8xx_bd_allocate(sc->txBdCount); - m8xx.scc1p.rbase = (char *)sc->rxBdBase - (char *)&m8xx; - m8xx.scc1p.tbase = (char *)sc->txBdBase - (char *)&m8xx; - - /* - * Send "Init parameters" command - */ - m8xx_cp_execute_cmd (M8xx_CR_OP_INIT_RX_TX | M8xx_CR_CHAN_SCC1); - - /* - * Set receive and transmit function codes - */ - m8xx.scc1p.rfcr = M8xx_RFCR_MOT | M8xx_RFCR_DMA_SPACE(0); - m8xx.scc1p.tfcr = M8xx_TFCR_MOT | M8xx_TFCR_DMA_SPACE(0); - - /* - * Set maximum receive buffer length - */ - m8xx.scc1p.mrblr = RBUF_SIZE; - - /* - * Set CRC parameters - */ - m8xx.scc1p.un.ethernet.c_pres = 0xFFFFFFFF; - m8xx.scc1p.un.ethernet.c_mask = 0xDEBB20E3; - - /* - * Clear diagnostic counters - */ - m8xx.scc1p.un.ethernet.crcec = 0; - m8xx.scc1p.un.ethernet.alec = 0; - m8xx.scc1p.un.ethernet.disfc = 0; - - /* - * Set pad value - */ - m8xx.scc1p.un.ethernet.pads = 0x8888; - - /* - * Set retry limit - */ - m8xx.scc1p.un.ethernet.ret_lim = 15; - - /* - * Set maximum and minimum frame length - */ - m8xx.scc1p.un.ethernet.mflr = 1518; - m8xx.scc1p.un.ethernet.minflr = 64; - m8xx.scc1p.un.ethernet.maxd1 = MAX_MTU_SIZE; - m8xx.scc1p.un.ethernet.maxd2 = MAX_MTU_SIZE; - - /* - * Clear group address hash table - */ - m8xx.scc1p.un.ethernet.gaddr1 = 0; - m8xx.scc1p.un.ethernet.gaddr2 = 0; - m8xx.scc1p.un.ethernet.gaddr3 = 0; - m8xx.scc1p.un.ethernet.gaddr4 = 0; - - /* - * Set our physical address - */ - hwaddr = sc->arpcom.ac_enaddr; - - m8xx.scc1p.un.ethernet.paddr_h = (hwaddr[5] << 8) | hwaddr[4]; - m8xx.scc1p.un.ethernet.paddr_m = (hwaddr[3] << 8) | hwaddr[2]; - m8xx.scc1p.un.ethernet.paddr_l = (hwaddr[1] << 8) | hwaddr[0]; - - /* - * Aggressive retry - */ - m8xx.scc1p.un.ethernet.p_per = 0; - - /* - * Clear individual address hash table - */ - m8xx.scc1p.un.ethernet.iaddr1 = 0; - m8xx.scc1p.un.ethernet.iaddr2 = 0; - m8xx.scc1p.un.ethernet.iaddr3 = 0; - m8xx.scc1p.un.ethernet.iaddr4 = 0; - - /* - * Clear temp address - */ - m8xx.scc1p.un.ethernet.taddr_l = 0; - m8xx.scc1p.un.ethernet.taddr_m = 0; - m8xx.scc1p.un.ethernet.taddr_h = 0; - - /* - * Set up receive buffer descriptors - */ - for (i = 0 ; i < sc->rxBdCount ; i++) { - (sc->rxBdBase + i)->status = 0; - } - - /* - * Set up transmit buffer descriptors - */ - for (i = 0 ; i < sc->txBdCount ; i++) { - (sc->txBdBase + i)->status = 0; - sc->txMbuf[i] = NULL; - } - sc->txBdHead = sc->txBdTail = 0; - sc->txBdActiveCount = 0; - - /* - * Clear any outstanding events - */ - m8xx.scc1.scce = 0xFFFF; - - /* - * Set up interrupts - */ - if (!BSP_install_rtems_irq_handler (ðernetSCC1IrqData)) { - rtems_panic ("Can't attach M8xx SCC1 interrupt handler\n"); - } - m8xx.scc1.sccm = 0; /* No interrupts unmasked till necessary */ - - /* - * Set up General SCC Mode Register - * Ethernet configuration - */ - m8xx.scc1.gsmr_h = 0x0; - m8xx.scc1.gsmr_l = 0x1088000c; - - /* - * Set up data synchronization register - * Ethernet synchronization pattern - */ - m8xx.scc1.dsr = 0xd555; - - /* - * Set up protocol-specific mode register - * No Heartbeat check - * No force collision - * Discard short frames - * Individual address mode - * Ethernet CRC - * Not promisuous - * Ignore/accept broadcast packets as specified - * Normal backoff timer - * No loopback - * No input sample at end of frame - * 64-byte limit for late collision - * Wait 22 bits before looking for start of frame delimiter - * Disable full-duplex operation - */ - m8xx.scc1.psmr = 0x080A | (sc->acceptBroadcast ? 0 : 0x100); - - /* - * Enable the TENA (RTS1*) pin - */ - m8xx.pcpar |= 0x1; - m8xx.pcdir &= ~0x1; - - /* - * Enable receiver and transmitter - */ - m8xx.scc1.gsmr_l = 0x1088003c; -} - - -/* - * Soak up buffer descriptors that have been sent. - * Note that a buffer descriptor can't be retired as soon as it becomes - * ready. The MPC860 manual (MPC860UM/AD 07/98 Rev.1) and the MPC821 - * manual state that, "If an Ethernet frame is made up of multiple - * buffers, the user should not reuse the first buffer descriptor until - * the last buffer descriptor of the frame has had its ready bit cleared - * by the CPM". - */ -static void -m8xx_Enet_retire_tx_bd (struct m8xx_enet_struct *sc) -{ - uint16_t status; - int i; - int nRetired; - struct mbuf *m, *n; - - i = sc->txBdTail; - nRetired = 0; - while ((sc->txBdActiveCount != 0) - && (((status = (sc->txBdBase + i)->status) & M8xx_BD_READY) == 0)) { - /* - * See if anything went wrong - */ - if (status & (M8xx_BD_DEFER | - M8xx_BD_HEARTBEAT | - M8xx_BD_LATE_COLLISION | - M8xx_BD_RETRY_LIMIT | - M8xx_BD_UNDERRUN | - M8xx_BD_CARRIER_LOST)) { - /* - * Check for errors which stop the transmitter. - */ - if (status & (M8xx_BD_LATE_COLLISION | - M8xx_BD_RETRY_LIMIT | - M8xx_BD_UNDERRUN)) { - if (status & M8xx_BD_LATE_COLLISION) - enet_driver[0].txLateCollision++; - if (status & M8xx_BD_RETRY_LIMIT) - enet_driver[0].txRetryLimit++; - if (status & M8xx_BD_UNDERRUN) - enet_driver[0].txUnderrun++; - - /* - * Restart the transmitter - */ - m8xx_cp_execute_cmd (M8xx_CR_OP_RESTART_TX | M8xx_CR_CHAN_SCC1); - } - if (status & M8xx_BD_DEFER) - enet_driver[0].txDeferred++; - if (status & M8xx_BD_HEARTBEAT) - enet_driver[0].txHeartbeat++; - if (status & M8xx_BD_CARRIER_LOST) - enet_driver[0].txLostCarrier++; - } - nRetired++; - if (status & M8xx_BD_LAST) { - /* - * A full frame has been transmitted. - * Free all the associated buffer descriptors. - */ - sc->txBdActiveCount -= nRetired; - while (nRetired) { - nRetired--; - m = sc->txMbuf[sc->txBdTail]; - MFREE (m, n); - if (++sc->txBdTail == sc->txBdCount) - sc->txBdTail = 0; - } - } - if (++i == sc->txBdCount) - i = 0; - } -} - -/* - * reader task - */ -static void -scc_rxDaemon (void *arg) -{ - struct m8xx_enet_struct *sc = (struct m8xx_enet_struct *)arg; - struct ifnet *ifp = &sc->arpcom.ac_if; - struct mbuf *m; - uint16_t status; - m8xxBufferDescriptor_t *rxBd; - int rxBdIndex; - - /* - * Allocate space for incoming packets and start reception - */ - for (rxBdIndex = 0 ; ;) { - rxBd = sc->rxBdBase + rxBdIndex; - MGETHDR (m, M_WAIT, MT_DATA); - MCLGET (m, M_WAIT); - m->m_pkthdr.rcvif = ifp; - sc->rxMbuf[rxBdIndex] = m; - rxBd->buffer = mtod (m, void *); - rxBd->status = M8xx_BD_EMPTY | M8xx_BD_INTERRUPT; - if (++rxBdIndex == sc->rxBdCount) { - rxBd->status |= M8xx_BD_WRAP; - break; - } - } - - /* - * Input packet handling loop - */ - rxBdIndex = 0; - for (;;) { - rxBd = sc->rxBdBase + rxBdIndex; - - /* - * Wait for packet if there's not one ready - */ - if ((status = rxBd->status) & M8xx_BD_EMPTY) { - /* - * Clear old events - */ - m8xx.scc1.scce = 0x8; - - /* - * Wait for packet - * Note that the buffer descriptor is checked - * *before* the event wait -- this catches the - * possibility that a packet arrived between the - * `if' above, and the clearing of the event register. - */ - while ((status = rxBd->status) & M8xx_BD_EMPTY) { - rtems_event_set events; - - /* - * Unmask RXF (Full frame received) event - */ - m8xx.scc1.sccm |= 0x8; - - rtems_bsdnet_event_receive (INTERRUPT_EVENT, - RTEMS_WAIT|RTEMS_EVENT_ANY, - RTEMS_NO_TIMEOUT, - &events); - } - } - - /* - * Check that packet is valid - */ - if ((status & (M8xx_BD_LAST | - M8xx_BD_FIRST_IN_FRAME | - M8xx_BD_LONG | - M8xx_BD_NONALIGNED | - M8xx_BD_SHORT | - M8xx_BD_CRC_ERROR | - M8xx_BD_OVERRUN | - M8xx_BD_COLLISION)) == - (M8xx_BD_LAST | - M8xx_BD_FIRST_IN_FRAME)) { - /* - * Pass the packet up the chain. - * FIXME: Packet filtering hook could be done here. - */ - struct ether_header *eh; - - /* - * Invalidate the buffer for this descriptor - */ - rtems_cache_invalidate_multiple_data_lines((const void *)rxBd->buffer, rxBd->length); - - m = sc->rxMbuf[rxBdIndex]; - m->m_len = m->m_pkthdr.len = rxBd->length - - sizeof(uint32_t) - - sizeof(struct ether_header); - eh = mtod (m, struct ether_header *); - m->m_data += sizeof(struct ether_header); - ether_input (ifp, eh, m); - - /* - * Allocate a new mbuf - */ - MGETHDR (m, M_WAIT, MT_DATA); - MCLGET (m, M_WAIT); - m->m_pkthdr.rcvif = ifp; - sc->rxMbuf[rxBdIndex] = m; - rxBd->buffer = mtod (m, void *); - } - else { - /* - * Something went wrong with the reception - */ - if (!(status & M8xx_BD_LAST)) - sc->rxNotLast++; - if (!(status & M8xx_BD_FIRST_IN_FRAME)) - sc->rxNotFirst++; - if (status & M8xx_BD_LONG) - sc->rxGiant++; - if (status & M8xx_BD_NONALIGNED) - sc->rxNonOctet++; - if (status & M8xx_BD_SHORT) - sc->rxRunt++; - if (status & M8xx_BD_CRC_ERROR) - sc->rxBadCRC++; - if (status & M8xx_BD_OVERRUN) - sc->rxOverrun++; - if (status & M8xx_BD_COLLISION) - sc->rxCollision++; - } - - /* - * Reenable the buffer descriptor - */ - rxBd->status = (status & (M8xx_BD_WRAP | M8xx_BD_INTERRUPT)) | - M8xx_BD_EMPTY; - - /* - * Move to next buffer descriptor - */ - if (++rxBdIndex == sc->rxBdCount) - rxBdIndex = 0; - } -} - - -static void -scc_sendpacket (struct ifnet *ifp, struct mbuf *m) -{ - struct m8xx_enet_struct *sc = ifp->if_softc; - volatile m8xxBufferDescriptor_t *firstTxBd, *txBd; - struct mbuf *l = NULL; - uint16_t status; - int nAdded; - - /* - * Free up buffer descriptors - */ - m8xx_Enet_retire_tx_bd (sc); - - /* - * Set up the transmit buffer descriptors. - * No need to pad out short packets since the - * hardware takes care of that automatically. - * No need to copy the packet to a contiguous buffer - * since the hardware is capable of scatter/gather DMA. - */ - nAdded = 0; - txBd = firstTxBd = sc->txBdBase + sc->txBdHead; - for (;;) { - /* - * Wait for buffer descriptor to become available. - */ - if ((sc->txBdActiveCount + nAdded) == sc->txBdCount) { - /* - * Clear old events - */ - m8xx.scc1.scce = 0x12; - - /* - * Wait for buffer descriptor to become available. - * Note that the buffer descriptors are checked - * *before* * entering the wait loop -- this catches - * the possibility that a buffer descriptor became - * available between the `if' above, and the clearing - * of the event register. - * This is to catch the case where the transmitter - * stops in the middle of a frame -- and only the - * last buffer descriptor in a frame can generate - * an interrupt. - */ - m8xx_Enet_retire_tx_bd (sc); - while ((sc->txBdActiveCount + nAdded) == sc->txBdCount) { - rtems_event_set events; - - /* - * Unmask TXB (buffer transmitted) and - * TXE (transmitter error) events. - */ - m8xx.scc1.sccm |= 0x12; - rtems_bsdnet_event_receive (INTERRUPT_EVENT, - RTEMS_WAIT|RTEMS_EVENT_ANY, - RTEMS_NO_TIMEOUT, - &events); - m8xx_Enet_retire_tx_bd (sc); - } - } - - /* - * Don't set the READY flag till the - * whole packet has been readied. - */ - status = nAdded ? M8xx_BD_READY : 0; - - /* - * FIXME: Why not deal with empty mbufs at at higher level? - * The IP fragmentation routine in ip_output - * can produce packet fragments with zero length. - * I think that ip_output should be changed to get - * rid of these zero-length mbufs, but for now, - * I'll deal with them here. - */ - if (m->m_len) { - /* - * Fill in the buffer descriptor - */ - txBd->buffer = mtod (m, void *); - txBd->length = m->m_len; - - /* - * Flush the buffer for this descriptor - */ - rtems_cache_flush_multiple_data_lines((const void *)txBd->buffer, txBd->length); - - sc->txMbuf[sc->txBdHead] = m; - nAdded++; - if (++sc->txBdHead == sc->txBdCount) { - status |= M8xx_BD_WRAP; - sc->txBdHead = 0; - } - l = m; - m = m->m_next; - } - else { - /* - * Just toss empty mbufs - */ - struct mbuf *n; - MFREE (m, n); - m = n; - if (l != NULL) - l->m_next = m; - } - - /* - * Set the transmit buffer status. - * Break out of the loop if this mbuf is the last in the frame. - */ - if (m == NULL) { - if (nAdded) { - status |= M8xx_BD_PAD | M8xx_BD_LAST | M8xx_BD_TX_CRC | M8xx_BD_INTERRUPT; - txBd->status = status; - firstTxBd->status |= M8xx_BD_READY; - sc->txBdActiveCount += nAdded; - } - break; - } - txBd->status = status; - txBd = sc->txBdBase + sc->txBdHead; - } -} - - -/* - * Driver transmit daemon - */ -void -scc_txDaemon (void *arg) -{ - struct m8xx_enet_struct *sc = (struct m8xx_enet_struct *)arg; - struct ifnet *ifp = &sc->arpcom.ac_if; - struct mbuf *m; - rtems_event_set events; - - for (;;) { - /* - * Wait for packet - */ - rtems_bsdnet_event_receive (START_TRANSMIT_EVENT, RTEMS_EVENT_ANY | RTEMS_WAIT, RTEMS_NO_TIMEOUT, &events); - - /* - * Send packets till queue is empty - */ - for (;;) { - /* - * Get the next mbuf chain to transmit. - */ - IF_DEQUEUE(&ifp->if_snd, m); - if (!m) - break; - scc_sendpacket (ifp, m); - } - ifp->if_flags &= ~IFF_OACTIVE; - } -} - - -/* - * Send packet (caller provides header). - */ -static void -m8xx_enet_start (struct ifnet *ifp) -{ - struct m8xx_enet_struct *sc = ifp->if_softc; - - rtems_bsdnet_event_send (sc->txDaemonTid, START_TRANSMIT_EVENT); - ifp->if_flags |= IFF_OACTIVE; -} - -/* - * Initialize and start the device - */ -static void -scc_init (void *arg) -{ - struct m8xx_enet_struct *sc = arg; - struct ifnet *ifp = &sc->arpcom.ac_if; - - if (sc->txDaemonTid == 0) { - - /* - * Set up SCC hardware - */ - m8xx_enet_initialize (sc); - - /* - * Start driver tasks - */ - sc->txDaemonTid = rtems_bsdnet_newproc ("SCtx", 4096, scc_txDaemon, sc); - sc->rxDaemonTid = rtems_bsdnet_newproc ("SCrx", 4096, scc_rxDaemon, sc); - - } - - /* - * Set flags appropriately - */ - if (ifp->if_flags & IFF_PROMISC) - m8xx.scc1.psmr |= 0x200; - else - m8xx.scc1.psmr &= ~0x200; - - /* - * Tell the world that we're running. - */ - ifp->if_flags |= IFF_RUNNING; - - /* - * Enable receiver and transmitter - */ - m8xx.scc1.gsmr_l |= 0x30; -} - - -/* - * Stop the device - */ -static void -scc_stop (struct m8xx_enet_struct *sc) -{ - struct ifnet *ifp = &sc->arpcom.ac_if; - - ifp->if_flags &= ~IFF_RUNNING; - - /* - * Shut down receiver and transmitter - */ - m8xx.scc1.gsmr_l &= ~0x30; -} - - -/* - * Show interface statistics - */ -static void -enet_stats (struct m8xx_enet_struct *sc) -{ - printf (" Rx Interrupts:%-8lu", sc->rxInterrupts); - printf (" Not First:%-8lu", sc->rxNotFirst); - printf (" Not Last:%-8lu\n", sc->rxNotLast); - printf (" Giant:%-8lu", sc->rxGiant); - printf (" Runt:%-8lu", sc->rxRunt); - printf (" Non-octet:%-8lu\n", sc->rxNonOctet); - printf (" Bad CRC:%-8lu", sc->rxBadCRC); - printf (" Overrun:%-8lu", sc->rxOverrun); - printf (" Collision:%-8lu\n", sc->rxCollision); - printf (" Discarded:%-8lu\n", (unsigned long)m8xx.scc1p.un.ethernet.disfc); - - printf (" Tx Interrupts:%-8lu", sc->txInterrupts); - printf (" Deferred:%-8lu", sc->txDeferred); - printf (" Missed Hearbeat:%-8lu\n", sc->txHeartbeat); - printf (" No Carrier:%-8lu", sc->txLostCarrier); - printf ("Retransmit Limit:%-8lu", sc->txRetryLimit); - printf (" Late Collision:%-8lu\n", sc->txLateCollision); - printf (" Underrun:%-8lu", sc->txUnderrun); - printf (" Raw output wait:%-8lu\n", sc->txRawWait); -} - -/* - * Driver ioctl handler - */ -static int -scc_ioctl (struct ifnet *ifp, ioctl_command_t command, caddr_t data) -{ - struct m8xx_enet_struct *sc = ifp->if_softc; - int error = 0; - - switch (command) { - case SIOCGIFADDR: - case SIOCSIFADDR: - ether_ioctl (ifp, command, data); - break; - - case SIOCSIFFLAGS: - switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { - case IFF_RUNNING: - scc_stop (sc); - break; - - case IFF_UP: - scc_init (sc); - break; - - case IFF_UP | IFF_RUNNING: - scc_stop (sc); - scc_init (sc); - break; - - default: - break; - } - break; - - case SIO_RTEMS_SHOW_STATS: - enet_stats (sc); - break; - - /* - * FIXME: All sorts of multicast commands need to be added here! - */ - default: - error = EINVAL; - break; - } - return error; -} - - -/* - * Attach an SCC driver to the system - */ -int -rtems_scc1_driver_attach (struct rtems_bsdnet_ifconfig *config) -{ - struct m8xx_enet_struct *sc; - struct ifnet *ifp; - int mtu; - int unitNumber; - char *unitName; - static const uint8_t maczero[] ={0,0,0,0,0,0}; - /* - * Parse driver name - */ - if ((unitNumber = rtems_bsdnet_parse_driver_name (config, &unitName)) < 0) - return 0; - - /* - * Is driver free? - */ - if ((unitNumber <= 0) || (unitNumber > NIFACES)) { - printf ("Bad SCC unit number.\n"); - return 0; - } - sc = &enet_driver[unitNumber - 1]; - ifp = &sc->arpcom.ac_if; - if (ifp->if_softc != NULL) { - printf ("Driver already in use.\n"); - return 0; - } - - /* - * Process options - */ - - /* - * MAC address: try to fetch it from config, else from TQMMon, else panic - */ - if (config->hardware_address) { - memcpy (sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN); - } -#ifdef BSP_HAS_TQMMON - else if(0 != memcmp(maczero,TQM_BD_INFO.eth_addr,ETHER_ADDR_LEN)) { - memcpy (sc->arpcom.ac_enaddr, TQM_BD_INFO.eth_addr, ETHER_ADDR_LEN); - } -#endif - else { - /* There is no ethernet address provided, so it could be read - * from the Ethernet protocol block of SCC1 in DPRAM. - */ - rtems_panic("No Ethernet address specified!\n"); - } - - if (config->mtu) - mtu = config->mtu; - else - mtu = ETHERMTU; - if (config->rbuf_count) - sc->rxBdCount = config->rbuf_count; - else - sc->rxBdCount = RX_BUF_COUNT; - if (config->xbuf_count) - sc->txBdCount = config->xbuf_count; - else - sc->txBdCount = TX_BUF_COUNT * TX_BD_PER_BUF; - sc->acceptBroadcast = !config->ignore_broadcast; - - /* - * Set up network interface values - */ - ifp->if_softc = sc; - ifp->if_unit = unitNumber; - ifp->if_name = unitName; - ifp->if_mtu = mtu; - ifp->if_init = scc_init; - ifp->if_ioctl = scc_ioctl; - ifp->if_start = m8xx_enet_start; - ifp->if_output = ether_output; - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; - if (ifp->if_snd.ifq_maxlen == 0) - ifp->if_snd.ifq_maxlen = ifqmaxlen; - - /* - * Attach the interface - */ - if_attach (ifp); - ether_ifattach (ifp); - return 1; -}; - -int -rtems_scc_enet_driver_attach(struct rtems_bsdnet_ifconfig *config, int attaching) -{ - return rtems_scc1_driver_attach(config); -} |