/*
* RTEMS/TCPIP driver for MCF5272 Ethernet
*
* Modified for MPC860 by Jay Monkman (jmonkman@lopingdog.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 <bsp.h>
#include <stdio.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 <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.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 16
#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
typedef struct {
uint16_t status;
uint16_t length;
void *buffer;
} bd_t;
#define MCF5272_BD_READY (bit(15))
#define MCF5272_BD_TO1 (bit(14))
#define MCF5272_BD_WRAP (bit(13))
#define MCF5272_BD_TO2 (bit(12))
#define MCF5272_BD_LAST (bit(11))
#define MCF5272_BD_TX_CRC (bit(10))
#define MCF5272_BD_DEFER (bit(9))
#define MCF5272_BD_HEARTBEAT (bit(8))
#define MCF5272_BD_LATE_COLLISION (bit(7))
#define MCF5272_BD_RETRY_LIMIT (bit(6))
#define MCF5272_BD_UNDERRUN (bit(1))
#define MCF5272_BD_CARRIER_LOST (bit(0))
#define MCF5272_BD_EMPTY (bit(15))
#define MCF5272_BD_RO1 (bit(14))
#define MCF5272_BD_WRAP (bit(13))
#define MCF5272_BD_RO2 (bit(12))
#define MCF5272_BD_M (bit(8))
#define MCF5272_BD_BC (bit(7))
#define MCF5272_BD_MC (bit(6))
#define MCF5272_BD_LONG (bit(5))
#define MCF5272_BD_NONALIGNED (bit(4))
#define MCF5272_BD_SHORT (bit(3))
#define MCF5272_BD_CRC_ERROR (bit(2))
#define MCF5272_BD_OVERRUN (bit(1))
#define MCF5272_BD_TRUNCATED (bit(0))
/*
* Per-device data
*/
struct mcf5272_enet_struct {
struct arpcom arpcom;
struct mbuf **rxMbuf;
struct mbuf **txMbuf;
int acceptBroadcast;
int rxBdCount;
int txBdCount;
int txBdHead;
int txBdTail;
int txBdActiveCount;
bd_t *rxBdBase;
bd_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 rxTruncated;
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 mcf5272_enet_struct enet_driver[NIFACES];
void dump_enet_regs(void)
{
printf("**************************************************************\n");
printf("ecr: 0x%08x eir: 0x%08x eimr: 0x%08x ivsr: 0x%08x\n\r",
g_enet_regs->ecr, g_enet_regs->eir,
g_enet_regs->eimr, g_enet_regs->ivsr);
printf("rdar: 0x%08x tdar: 0x%08x mmfr: 0x%08x mscr: 0x%08x\n\r",
g_enet_regs->rdar, g_enet_regs->tdar,
g_enet_regs->mmfr, g_enet_regs->mscr);
printf("frbr: 0x%08x frsr: 0x%08x tfwr: 0x%08x tfsr: 0x%08x\n\r",
g_enet_regs->frbr, g_enet_regs->frsr,
g_enet_regs->tfwr, g_enet_regs->tfsr);
printf("rcr: 0x%08x mflr: 0x%08x tcr: 0x%08x malr: 0x%08x\n\r",
g_enet_regs->rcr, g_enet_regs->mflr,
g_enet_regs->tcr, g_enet_regs->malr);
printf("maur: 0x%08x htur: 0x%08x htlr: 0x%08x erdsr: 0x%08x\n\r",
g_enet_regs->maur, g_enet_regs->htur,
g_enet_regs->htlr, g_enet_regs->erdsr);
printf("etdsr: 0x%08x emrbr: 0x%08x\n\r",
g_enet_regs->etdsr, g_enet_regs->emrbr);
}
/*#define cp printk("%s:%d\n\r", __FUNCTION__, __LINE__) */
#define cp
#define mcf5272_bd_allocate(_n_) malloc((_n_) * sizeof(bd_t), 0, M_NOWAIT)
rtems_isr enet_rx_isr(rtems_vector_number vector)
{
cp;
/*
* Frame received?
*/
if (g_enet_regs->eir & MCF5272_ENET_EIR_RXF) {
cp;
g_enet_regs->eir = MCF5272_ENET_EIR_RXF;
enet_driver[0].rxInterrupts++;
rtems_bsdnet_event_send (enet_driver[0].rxDaemonTid, INTERRUPT_EVENT);
}
cp;
}
rtems_isr enet_tx_isr(rtems_vector_number vector)
{
cp;
/*
* Buffer transmitted or transmitter error?
*/
if (g_enet_regs->eir & MCF5272_ENET_EIR_TXF) {
cp;
g_enet_regs->eir = MCF5272_ENET_EIR_TXF;
enet_driver[0].txInterrupts++;
rtems_bsdnet_event_send (enet_driver[0].txDaemonTid, INTERRUPT_EVENT);
}
cp;
}
/*
* Initialize the ethernet hardware
*/
static void
mcf5272_enet_initialize_hardware (struct mcf5272_enet_struct *sc)
{
int i;
unsigned char *hwaddr;
uint32_t icr;
/*
* Issue reset to FEC
*/
g_enet_regs->ecr=0x1;
/*
* Set the TX and RX fifo sizes. For now, we'll split it evenly
*/
/* If you uncomment these, the FEC will not work right.
g_enet_regs->r_fstart = ((g_enet_regs->r_bound & 0x3ff) >> 2) & 0x3ff;
g_enet_regs->x_fstart = 0;
*/
/* Copy mac address to device */
hwaddr = sc->arpcom.ac_enaddr;
g_enet_regs->malr = (hwaddr[0] << 24 |
hwaddr[1] << 16 |
hwaddr[2] << 8 |
hwaddr[3]);
g_enet_regs->maur = (hwaddr[4] << 24 |
hwaddr[5] << 16);
/*
* Clear the hash table
*/
g_enet_regs->htlr = 0;
g_enet_regs->htur = 0;
/*
* Set up receive buffer size
*/
g_enet_regs->emrbr = 0x5f0; /* set to 1520 */
/*
* 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 = mcf5272_bd_allocate(sc->rxBdCount);
sc->txBdBase = mcf5272_bd_allocate(sc->txBdCount);
g_enet_regs->erdsr = (int)sc->rxBdBase;
g_enet_regs->etdsr = (int)sc->txBdBase;
/*
* Set up Receive Control Register:
* Not promiscuous mode
* MII mode
* Full duplex
* No loopback
*/
g_enet_regs->rcr = 0x00000004;
/*
* Set up Transmit Control Register:
* Full duplex
* No heartbeat
*/
g_enet_regs->tcr = 0x00000004;
/*
* Set MII speed to 2.5 MHz for 25 Mhz system clock
*/
g_enet_regs->mscr = 0x0a;
g_enet_regs->mmfr = 0x58021000;
/*
* 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;
/*
* Mask all FEC interrupts and clear events
*/
g_enet_regs->eimr = (MCF5272_ENET_EIR_TXF |
MCF5272_ENET_EIR_RXF);
g_enet_regs->eir = ~0;
/*
* Set up interrupts
*/
set_vector(enet_rx_isr, BSP_INTVEC_ERX, 1);
set_vector(enet_tx_isr, BSP_INTVEC_ETX, 1);
/* Configure ethernet interrupts */
icr = g_intctrl_regs->icr3;
icr = icr & ~((MCF5272_ICR3_ERX_MASK | MCF5272_ICR3_ERX_PI) |
(MCF5272_ICR3_ETX_MASK | MCF5272_ICR3_ETX_PI));
icr |= ((MCF5272_ICR3_ERX_IPL(BSP_INTLVL_ERX) | MCF5272_ICR3_ERX_PI)|
(MCF5272_ICR3_ETX_IPL(BSP_INTLVL_ETX) | MCF5272_ICR3_ETX_PI));
g_intctrl_regs->icr3 = icr;
}
/*
* 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
mcf5272_enet_retire_tx_bd (struct mcf5272_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) & MCF5272_BD_READY) == 0)) {
/*
* See if anything went wrong
*/
if (status & (MCF5272_BD_DEFER |
MCF5272_BD_HEARTBEAT |
MCF5272_BD_LATE_COLLISION |
MCF5272_BD_RETRY_LIMIT |
MCF5272_BD_UNDERRUN |
MCF5272_BD_CARRIER_LOST)) {
/*
* Check for errors which stop the transmitter.
*/
if (status & (MCF5272_BD_LATE_COLLISION |
MCF5272_BD_RETRY_LIMIT |
MCF5272_BD_UNDERRUN)) {
if (status & MCF5272_BD_LATE_COLLISION) {
enet_driver[0].txLateCollision++;
}
if (status & MCF5272_BD_RETRY_LIMIT) {
enet_driver[0].txRetryLimit++;
}
if (status & MCF5272_BD_UNDERRUN) {
enet_driver[0].txUnderrun++;
}
}
if (status & MCF5272_BD_DEFER) {
enet_driver[0].txDeferred++;
}
if (status & MCF5272_BD_HEARTBEAT) {
enet_driver[0].txHeartbeat++;
}
if (status & MCF5272_BD_CARRIER_LOST) {
enet_driver[0].txLostCarrier++;
}
}
nRetired++;
if (status & MCF5272_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;
}
}
}
static void
mcf5272_enet_rxDaemon (void *arg)
{
struct mcf5272_enet_struct *sc = (struct mcf5272_enet_struct *)arg;
struct ifnet *ifp = &sc->arpcom.ac_if;
struct mbuf *m;
uint16_t status;
bd_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 = MCF5272_BD_EMPTY;
g_enet_regs->rdar = 0x1000000;
if (++rxBdIndex == sc->rxBdCount) {
rxBd->status |= MCF5272_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) & MCF5272_BD_EMPTY) {
/*
* Clear old events
*/
g_enet_regs->eir = MCF5272_ENET_EIR_RXF;
/*
* 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) & MCF5272_BD_EMPTY) {
rtems_event_set events;
/*
* Unmask RXF (Full frame received) event
*/
g_enet_regs->eir |= MCF5272_ENET_EIR_RXF;
rtems_bsdnet_event_receive (INTERRUPT_EVENT,
RTEMS_WAIT|RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT,
&events);
cp;
}
}
cp;
/*
* Check that packet is valid
*/
if (status & MCF5272_BD_LAST) {
/*
* Pass the packet up the chain.
* FIXME: Packet filtering hook could be done here.
*/
struct ether_header *eh;
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 & MCF5272_BD_LAST)) {
sc->rxNotLast++;
}
if (status & MCF5272_BD_LONG) {
sc->rxGiant++;
}
if (status & MCF5272_BD_NONALIGNED) {
sc->rxNonOctet++;
}
if (status & MCF5272_BD_SHORT) {
sc->rxRunt++;
}
if (status & MCF5272_BD_CRC_ERROR) {
sc->rxBadCRC++;
}
if (status & MCF5272_BD_OVERRUN) {
sc->rxOverrun++;
}
if (status & MCF5272_BD_TRUNCATED) {
sc->rxTruncated++;
}
}
/*
* Reenable the buffer descriptor
*/
rxBd->status = (status & MCF5272_BD_WRAP) | MCF5272_BD_EMPTY;
g_enet_regs->rdar = 0x1000000;
/*
* Move to next buffer descriptor
*/
if (++rxBdIndex == sc->rxBdCount) {
rxBdIndex = 0;
}
}
}
static void
mcf5272_enet_sendpacket (struct ifnet *ifp, struct mbuf *m)
{
struct mcf5272_enet_struct *sc = ifp->if_softc;
volatile bd_t *firstTxBd, *txBd;
/* struct mbuf *l = NULL; */
uint16_t status;
int nAdded;
cp;
/*
* Free up buffer descriptors
*/
mcf5272_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 (;;) {
cp;
/*
* Wait for buffer descriptor to become available.
*/
if ((sc->txBdActiveCount + nAdded) == sc->txBdCount) {
/*
* Clear old events
*/
g_enet_regs->eir = MCF5272_ENET_EIR_TXF;
/*
* 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.
*/
mcf5272_enet_retire_tx_bd (sc);
while ((sc->txBdActiveCount + nAdded) == sc->txBdCount) {
rtems_event_set events;
cp;
/*
* Unmask TXB (buffer transmitted) and
* TXE (transmitter error) events.
*/
g_enet_regs->eir |= MCF5272_ENET_EIR_TXF;
rtems_bsdnet_event_receive (INTERRUPT_EVENT,
RTEMS_WAIT|RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT,
&events);
cp;
mcf5272_enet_retire_tx_bd (sc);
}
}
/*
* Don't set the READY flag till the
* whole packet has been readied.
*/
status = nAdded ? MCF5272_BD_READY : 0;
cp;
/*
* 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) {
cp;
/*
* Fill in the buffer descriptor
*/
txBd->buffer = mtod (m, void *);
txBd->length = m->m_len;
sc->txMbuf[sc->txBdHead] = m;
nAdded++;
if (++sc->txBdHead == sc->txBdCount) {
status |= MCF5272_BD_WRAP;
sc->txBdHead = 0;
}
/* l = m;*/
m = m->m_next;
}
else {
/*
* Just toss empty mbufs
*/
struct mbuf *n;
cp;
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) {
cp;
if (nAdded) {
cp;
status |= MCF5272_BD_LAST | MCF5272_BD_TX_CRC;
txBd->status = status;
firstTxBd->status |= MCF5272_BD_READY;
g_enet_regs->tdar = 0x1000000;
sc->txBdActiveCount += nAdded;
}
break;
}
txBd->status = status;
txBd = sc->txBdBase + sc->txBdHead;
}
cp;
/*
dump_enet_regs();
dump_intctrl;
*/
}
void
mcf5272_enet_txDaemon (void *arg)
{
struct mcf5272_enet_struct *sc = (struct mcf5272_enet_struct *)arg;
struct ifnet *ifp = &sc->arpcom.ac_if;
struct mbuf *m;
rtems_event_set events;
cp;
for (;;) {
/*
* Wait for packet
*/
rtems_bsdnet_event_receive (START_TRANSMIT_EVENT,
RTEMS_EVENT_ANY | RTEMS_WAIT,
RTEMS_NO_TIMEOUT,
&events);
cp;
/*
* Send packets till queue is empty
*/
cp;
for (;;) {
cp;
/*
* Get the next mbuf chain to transmit.
*/
IF_DEQUEUE(&ifp->if_snd, m);
if (!m)
break;
mcf5272_enet_sendpacket (ifp, m);
}
ifp->if_flags &= ~IFF_OACTIVE;
}
}
/*
* Send packet (caller provides header).
*/
static void
mcf5272_enet_start (struct ifnet *ifp)
{
struct mcf5272_enet_struct *sc = ifp->if_softc;
cp;
rtems_bsdnet_event_send (sc->txDaemonTid, START_TRANSMIT_EVENT);
cp;
ifp->if_flags |= IFF_OACTIVE;
}
static void
mcf5272_enet_init (void *arg)
{
struct mcf5272_enet_struct *sc = arg;
struct ifnet *ifp = &sc->arpcom.ac_if;
if (sc->txDaemonTid == 0) {
/*
* Set up SCC hardware
*/
mcf5272_enet_initialize_hardware (sc);
/*
* Start driver tasks
*/
sc->txDaemonTid = rtems_bsdnet_newproc("SCtx",
4096,
mcf5272_enet_txDaemon,
sc);
sc->rxDaemonTid = rtems_bsdnet_newproc("SCrx",
4096,
mcf5272_enet_rxDaemon,
sc);
}
/*
* Set flags appropriately
*/
if (ifp->if_flags & IFF_PROMISC) {
g_enet_regs->rcr |= 0x8;
} else {
g_enet_regs->rcr &= ~0x8;
}
/*
* Tell the world that we're running.
*/
ifp->if_flags |= IFF_RUNNING;
/*
* Enable receiver and transmitter
*/
g_enet_regs->ecr = 0x2;
}
static void
mcf5272_enet_stop (struct mcf5272_enet_struct *sc)
{
struct ifnet *ifp = &sc->arpcom.ac_if;
ifp->if_flags &= ~IFF_RUNNING;
/*
* Shut down receiver and transmitter
*/
g_enet_regs->ecr = 0x0;
}
/*
* Show interface statistics
*/
static void
enet_stats (struct mcf5272_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 (" Truncated:%-8lu\n", sc->rxTruncated);
/* printf (" Discarded:%-8lu\n", (unsigned long)mcf5272.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
mcf5272_enet_ioctl (struct ifnet *ifp, int command, caddr_t data)
{
struct mcf5272_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:
mcf5272_enet_stop (sc);
break;
case IFF_UP:
mcf5272_enet_init (sc);
break;
case IFF_UP | IFF_RUNNING:
mcf5272_enet_stop (sc);
mcf5272_enet_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;
}
int
rtems_enet_driver_attach (struct rtems_bsdnet_ifconfig *config)
{
struct mcf5272_enet_struct *sc;
struct ifnet *ifp;
int mtu;
int unitNumber;
char *unitName;
/*
* Parse driver name
*/
unitNumber = rtems_bsdnet_parse_driver_name (config, &unitName);
if (unitNumber < 0){
return 0;
}
/*
* Is driver free?
*/
if ((unitNumber < 0) || (unitNumber > NIFACES)) {
printf ("Bad unit number: %d.\n", unitNumber);
return 0;
}
sc = &enet_driver[unitNumber];
ifp = &sc->arpcom.ac_if;
if (ifp->if_softc != NULL) {
printf ("Driver already in use.\n");
return 0;
}
/*
* Process options
*/
sc->arpcom.ac_enaddr[0] = (g_enet_regs->malr >> 24) & 0xff;
sc->arpcom.ac_enaddr[1] = (g_enet_regs->malr >> 16) & 0xff;
sc->arpcom.ac_enaddr[2] = (g_enet_regs->malr >> 8) & 0xff;
sc->arpcom.ac_enaddr[3] = (g_enet_regs->malr >> 0) & 0xff;
sc->arpcom.ac_enaddr[4] = (g_enet_regs->maur >> 24) & 0xff;
sc->arpcom.ac_enaddr[5] = (g_enet_regs->maur >> 16) & 0xff;
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 = mcf5272_enet_init;
ifp->if_ioctl = mcf5272_enet_ioctl;
ifp->if_start = mcf5272_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);
cp;
ether_ifattach (ifp);
cp;
return 1;
};