/*
* RTEMS/TCPIP driver for MPC8260 SCC
*
* Modified for MPC8260 by Andy Dachs <a.dachs@sstl.co.uk>
* Surrey Satellite Technology Limited
*
* On the ADS board the ethernet interface is connected to FCC2
* but in my application I want TCP over HDLC (see README)
* so will use SCC3 as the network interface. I have other plans
* for the FCCs so am unlikely to add true ethernet support to
* this BSP. Contributions welcome!
*
* 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_m860_enet_driver_attach determines which one to use. Currently,
* only one may be used at a time.
*
* W. Eric Norum
* Saskatchewan Accelerator Laboratory
* University of Saskatchewan
* Saskatoon, Saskatchewan, CANADA
* eric@skatter.usask.ca
*
* $Id$
*/
#include <bsp.h>
#include <bsp/irq.h>
#include <mpc8260.h>
#include <mpc8260/cpm.h>
#include <stdio.h>
#include <rtems/error.h>
#include <rtems/rtems_bsdnet.h>
#include <rtems/bspIo.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 "if_hdlcsubr.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")
extern void m8xx_dump_brgs( void );
/*
* 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 MAX_MTU_SIZE 2050*/
#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 m8260_hdlc_struct {
struct ifnet ac_if;
struct mbuf **rxMbuf;
struct mbuf **txMbuf;
int acceptBroadcast;
int rxBdCount;
int txBdCount;
int txBdHead;
int txBdTail;
int txBdActiveCount;
m8260BufferDescriptor_t *rxBdBase;
m8260BufferDescriptor_t *txBdBase;
rtems_id rxDaemonTid;
rtems_id txDaemonTid;
/*
* Statistics
*/
unsigned long rxNotFirst;
unsigned long rxNotLast;
unsigned long rxInterrupts;
unsigned long rxGiant;
unsigned long rxNonOctet;
unsigned long rxAbort;
unsigned long rxBadCRC;
unsigned long rxOverrun;
unsigned long rxLostCarrier;
unsigned long txInterrupts;
unsigned long txUnderrun;
unsigned long txLostCarrier;
unsigned long txRawWait;
};
static struct m8260_hdlc_struct hdlc_driver[NIFACES];
static void m8xx_scc3_hdlc_on(const rtems_irq_connect_data* ptr)
{
}
static void m8xx_scc3_hdlc_off(const rtems_irq_connect_data* ptr)
{
/*
* Please put relevant code there
*/
}
static int m8xx_scc3_hdlc_isOn(const rtems_irq_connect_data* ptr)
{
return BSP_irq_enabled_at_cpm (ptr->name);
}
/*
* SCC interrupt handler
* TBD: Can we work out which SCC generated the interrupt from the
* value of v? If so we can use the same handler for multiple
* SCCs.
*/
static void
m8xx_scc3_interrupt_handler ()
{
/*
* Frame received?
*/
if ((m8260.scc3.sccm & M8260_SCCE_RXF) &&
(m8260.scc3.scce & M8260_SCCE_RXF) ) {
m8260.scc3.scce = M8260_SCCE_RXF;
/* m8260.scc3.sccm &= ~M8260_SCCE_RXF; */
hdlc_driver[0].rxInterrupts++;
rtems_event_send (hdlc_driver[0].rxDaemonTid, INTERRUPT_EVENT);
/*
printk( "Rx " );
*/
}
/*
* Buffer transmitted or transmitter error?
*/
if ((m8260.scc3.sccm & (M8260_SCCE_TX | M8260_SCCE_TXE) ) &&
(m8260.scc3.scce & (M8260_SCCE_TX | M8260_SCCE_TXE) )) {
m8260.scc3.scce = M8260_SCCE_TX | M8260_SCCE_TXE;
/* m8260.scc3.sccm &= ~(M8260_SCCE_TX | M8260_SCCE_TXE); */
hdlc_driver[0].txInterrupts++;
rtems_event_send (hdlc_driver[0].txDaemonTid, INTERRUPT_EVENT);
/*
printk( "Tx " );
*/
}
#if 0
m8260.sipnr_l = M8260_SIMASK_SCC3; /* Clear SCC3 interrupt-in-service bit */
#endif
}
static rtems_irq_connect_data hdlcSCC3IrqData = {
BSP_CPM_IRQ_SCC3,
(rtems_irq_hdl) m8xx_scc3_interrupt_handler,
(rtems_irq_enable) m8xx_scc3_hdlc_on,
(rtems_irq_disable) m8xx_scc3_hdlc_off,
(rtems_irq_is_enabled)m8xx_scc3_hdlc_isOn
};
/*
* Initialize the SCC hardware
* Configure I/O ports for SCC3
* Internal Tx clock, External Rx clock
*/
static void
m8260_scc_initialize_hardware (struct m8260_hdlc_struct *sc)
{
int i;
int brg;
/*
unsigned char *hwaddr;
*/
rtems_status_code status;
/*
rtems_isr_entry old_handler;
*/
/* RxD PB14 */
m8260.pparb |= 0x00020000;
m8260.psorb &= ~0x00020000;
m8260.pdirb &= ~0x00020000;
/* RxC (CLK5) PC27 */
m8260.pparc |= 0x00000010;
m8260.psorc &= ~0x00000010;
m8260.pdirc &= ~0x00000010;
/* TxD PD24 and TxC PD10 (BRG4) */
m8260.ppard |= 0x00200080;
m8260.psord |= 0x00200000;
m8260.psord &= ~0x00000080;
m8260.pdird |= 0x00200080;
/* External Rx Clock from CLK5 */
if( m8xx_get_clk( M8xx_CLK_5 ) == -1 )
printk( "Error allocating CLK5 for network device.\n" );
else
m8260.cmxscr |= 0x00002000;
/* Internal Tx Clock from BRG4 */
if( (brg = m8xx_get_brg(M8xx_BRG_4, 8000000 )) == -1 )
printk( "Error allocating BRG for network device\n" );
else
m8260.cmxscr |= ((unsigned)brg << 8);
/*
* 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);
m8260.scc3p.rbase = (char *)sc->rxBdBase - (char *)&m8260;
m8260.scc3p.tbase = (char *)sc->txBdBase - (char *)&m8260;
/*
* Send "Init parameters" command
*/
m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SCC3 );
/*
* Set receive and transmit function codes
*/
m8260.scc3p.rfcr = M8260_RFCR_MOT | M8260_RFCR_60X_BUS;
m8260.scc3p.tfcr = M8260_TFCR_MOT | M8260_TFCR_60X_BUS;
/*
* Set maximum receive buffer length
*/
m8260.scc3p.mrblr = RBUF_SIZE;
m8260.scc3p.un.hdlc.c_mask = 0xF0B8;
m8260.scc3p.un.hdlc.c_pres = 0xFFFF;
m8260.scc3p.un.hdlc.disfc = 0;
m8260.scc3p.un.hdlc.crcec = 0;
m8260.scc3p.un.hdlc.abtsc = 0;
m8260.scc3p.un.hdlc.nmarc = 0;
m8260.scc3p.un.hdlc.retrc = 0;
m8260.scc3p.un.hdlc.rfthr = 1;
m8260.scc3p.un.hdlc.mflr = RBUF_SIZE;
m8260.scc3p.un.hdlc.hmask = 0x0000; /* promiscuous */
m8260.scc3p.un.hdlc.haddr1 = 0xFFFF; /* Broadcast address */
m8260.scc3p.un.hdlc.haddr2 = 0xFFFF; /* Station address */
m8260.scc3p.un.hdlc.haddr3 = 0xFFFF; /* Dummy */
m8260.scc3p.un.hdlc.haddr4 = 0xFFFF; /* Dummy */
/*
* Send "Init parameters" command
*/
/*
m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SCC3 );
*/
/*
* 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;
m8260.scc3.sccm = 0; /* No interrupts unmasked till necessary */
/*
* Clear any outstanding events
*/
m8260.scc3.scce = 0xFFFF;
/*
* Set up interrupts
*/
status = BSP_install_rtems_irq_handler (&hdlcSCC3IrqData);
/*
printk( "status = %d, Success = %d\n", status, RTEMS_SUCCESSFUL );
*/
if (status != 1 /*RTEMS_SUCCESSFUL*/ ) {
rtems_panic ("Can't attach M8260 SCC3 interrupt handler: %s\n",
rtems_status_text (status));
}
m8260.scc3.sccm = 0; /* No interrupts unmasked till necessary */
#if 0
/*
* Set up interrupts
*/
status = rtems_interrupt_catch (m8260_scc3_interrupt_handler,
PPC_IRQ_CPM_SCC3,
&old_handler);
if (status != RTEMS_SUCCESSFUL) {
rtems_panic ("Can't attach M8260 SCC3 interrupt handler: %s\n",
rtems_status_text (status));
}
m8260.sipnr_l = M8260_SIMASK_SCC3; /* clear pending event */
m8260.simr_l |= M8260_SIMASK_SCC3; /* Enable SCC interrupt */
#endif
m8260.scc3.gsmr_h = 0;
m8260.scc3.gsmr_l = 0x10000000;
m8260.scc3.dsr = 0x7E7E; /* flag character */
m8260.scc3.psmr = 0x2000; /* 2 flags between Tx'd frames */
/* printk("scc3 init\n" ); */
m8260.scc3.gsmr_l |= 0x00000030; /* Set ENR and ENT to enable Rx and Tx */
}
/*
* Soak up buffer descriptors that have been sent
* Note that a buffer descriptor can't be retired as soon as it becomes
* ready. The MC68360 Errata (May 96) says 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
m8260Enet_retire_tx_bd (struct m8260_hdlc_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) & M8260_BD_READY) == 0)) {
/*
* See if anything went wrong
*/
if (status & (M8260_BD_UNDERRUN |
M8260_BD_CTS_LOST)) {
/*
* Check for errors which stop the transmitter.
*/
if( status & M8260_BD_UNDERRUN ) {
hdlc_driver[0].txUnderrun++;
/*
* Restart the transmitter
*/
/* FIXME: this should get executed only if using the SCC */
m8xx_cp_execute_cmd (M8260_CR_OP_RESTART_TX | M8260_CR_SCC3);
}
if (status & M8260_BD_CTS_LOST)
hdlc_driver[0].txLostCarrier++;
}
nRetired++;
if (status & M8260_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 m8260_hdlc_struct *sc = (struct m8260_hdlc_struct *)arg;
struct ifnet *ifp = &sc->ac_if;
struct mbuf *m;
uint16_t status;
m8260BufferDescriptor_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 = M8260_BD_EMPTY | M8260_BD_INTERRUPT;
if (++rxBdIndex == sc->rxBdCount) {
rxBd->status |= M8260_BD_WRAP;
break;
}
}
/*
m8260.scc3.sccm |= M8260_SCCE_RXF;
*/
/*
* Input packet handling loop
*/
rxBdIndex = 0;
for (;;) {
rxBd = sc->rxBdBase + rxBdIndex;
/*
* Wait for packet if there's not one ready
*/
if ((status = rxBd->status) & M8260_BD_EMPTY) {
/*
* Clear old events
*/
m8260.scc3.scce = M8260_SCCE_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) & M8260_BD_EMPTY) {
rtems_event_set events;
/*
* Unmask RXF (Full frame received) event
*/
m8260.scc3.sccm |= M8260_SCCE_RXF;
/* printk( "Rxdwait "); */
rtems_bsdnet_event_receive (INTERRUPT_EVENT,
RTEMS_WAIT|RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT,
&events);
/* printk( "Rxd " ); */
}
}
/*
* Check that packet is valid
*/
if ((status & (M8260_BD_LAST |
M8260_BD_FIRST_IN_FRAME |
M8260_BD_LONG |
M8260_BD_NONALIGNED |
M8260_BD_ABORT |
M8260_BD_CRC_ERROR |
M8260_BD_OVERRUN /*|
M8260_BD_CARRIER_LOST*/)) ==
(M8260_BD_LAST |
M8260_BD_FIRST_IN_FRAME ) ) {
/* printk( "RxV " ); */
/*
* Invalidate the buffer for this descriptor
*/
rtems_cache_invalidate_multiple_data_lines((void *)rxBd->buffer, rxBd->length);
m = sc->rxMbuf[rxBdIndex];
/* strip off HDLC CRC */
m->m_len = m->m_pkthdr.len = rxBd->length - sizeof(uint16_t);
hdlc_input( ifp, 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 {
printk( "RxErr[%04X,%d]", status, rxBd->length );
/*
* Something went wrong with the reception
*/
if (!(status & M8260_BD_LAST))
sc->rxNotLast++;
if (!(status & M8260_BD_FIRST_IN_FRAME))
sc->rxNotFirst++;
if (status & M8260_BD_LONG)
sc->rxGiant++;
if (status & M8260_BD_NONALIGNED)
sc->rxNonOctet++;
if (status & M8260_BD_ABORT)
sc->rxAbort++;
if (status & M8260_BD_CRC_ERROR)
sc->rxBadCRC++;
if (status & M8260_BD_OVERRUN)
sc->rxOverrun++;
if (status & M8260_BD_CARRIER_LOST)
sc->rxLostCarrier++;
}
/*
* Reenable the buffer descriptor
*/
rxBd->status = (status & (M8260_BD_WRAP | M8260_BD_INTERRUPT)) |
M8260_BD_EMPTY;
/*
* Move to next buffer descriptor
*/
if (++rxBdIndex == sc->rxBdCount)
rxBdIndex = 0;
}
}
static void
scc_sendpacket (struct ifnet *ifp, struct mbuf *m)
{
struct m8260_hdlc_struct *sc = ifp->if_softc;
volatile m8260BufferDescriptor_t *firstTxBd, *txBd;
struct mbuf *l = NULL;
uint16_t status;
int nAdded;
/*
* Free up buffer descriptors
*/
m8260Enet_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;
/*
m8260.scc3.sccm |= (M8260_SCCE_TX | M8260_SCCE_TXE);
*/
for (;;) {
/*
* Wait for buffer descriptor to become available.
*/
if ((sc->txBdActiveCount + nAdded) == sc->txBdCount) {
/*
* Clear old events
*/
m8260.scc3.scce = M8260_SCCE_TX | M8260_SCCE_TXE;
/*
* 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.
*/
m8260Enet_retire_tx_bd (sc);
while ((sc->txBdActiveCount + nAdded) == sc->txBdCount) {
rtems_event_set events;
/*
* Unmask TX (buffer transmitted) event
*/
m8260.scc3.sccm |= (M8260_SCCE_TX | M8260_SCCE_TXE);
rtems_bsdnet_event_receive (INTERRUPT_EVENT,
RTEMS_WAIT|RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT,
&events);
m8260Enet_retire_tx_bd (sc);
}
}
/*
* Don't set the READY flag till the
* whole packet has been readied.
*/
status = nAdded ? M8260_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((void *)txBd->buffer, txBd->length);
/* throw off the header for Ethernet Emulation mode */
/*
txBd->buffer = mtod (m, void *);
txBd->buffer += sizeof( struct ether_header ) + 2;
txBd->length = m->m_len - sizeof( struct ether_header ) - 2;
*/
sc->txMbuf[sc->txBdHead] = m;
nAdded++;
if (++sc->txBdHead == sc->txBdCount) {
status |= M8260_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 |= M8260_BD_LAST | M8260_BD_TX_CRC | M8260_BD_INTERRUPT;
txBd->status = status;
firstTxBd->status |= M8260_BD_READY;
sc->txBdActiveCount += nAdded;
}
break;
}
txBd->status = status;
txBd = sc->txBdBase + sc->txBdHead;
}
}
/*
* Driver transmit daemon
*/
void
scc_txDaemon (void *arg)
{
struct m8260_hdlc_struct *sc = (struct m8260_hdlc_struct *)arg;
struct ifnet *ifp = &sc->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
m8260_hdlc_start (struct ifnet *ifp)
{
struct m8260_hdlc_struct *sc = ifp->if_softc;
rtems_event_send (sc->txDaemonTid, START_TRANSMIT_EVENT);
ifp->if_flags |= IFF_OACTIVE;
}
/*
* Initialize and start the device
*/
static void
scc_init (void *arg)
{
struct m8260_hdlc_struct *sc = arg;
struct ifnet *ifp = &sc->ac_if;
if (sc->txDaemonTid == 0) {
/*
* Set up SCC hardware
*/
m8260_scc_initialize_hardware (sc);
/*
* Start driver tasks
*/
sc->txDaemonTid = rtems_bsdnet_newproc ("SCtx", 4096, scc_txDaemon, sc);
sc->rxDaemonTid = rtems_bsdnet_newproc ("SCrx", 4096, scc_rxDaemon, sc);
}
#if 0
/*
* Set flags appropriately
*/
if (ifp->if_flags & IFF_PROMISC)
m8260.scc3.psmr |= 0x200;
else
m8260.scc3.psmr &= ~0x200;
#endif
/*
* Tell the world that we're running.
*/
ifp->if_flags |= IFF_RUNNING;
/*
* Enable receiver and transmitter
*/
m8260.scc3.gsmr_l |= 0x30;
}
/*
* Stop the device
*/
static void
scc_stop (struct m8260_hdlc_struct *sc)
{
struct ifnet *ifp = &sc->ac_if;
ifp->if_flags &= ~IFF_RUNNING;
/*
* Shut down receiver and transmitter
*/
m8260.scc3.gsmr_l &= ~0x30;
}
/*
* Show interface statistics
*/
static void
hdlc_stats (struct m8260_hdlc_struct *sc)
{
printf (" Rx Interrupts:%-8lu", sc->rxInterrupts);
printf (" Giant:%-8lu", sc->rxGiant);
printf (" Non-octet:%-8lu\n", sc->rxNonOctet);
printf (" Bad CRC:%-8lu", sc->rxBadCRC);
printf (" Overrun:%-8lu", sc->rxOverrun);
printf (" No Carrier:%-8lu\n", sc->rxLostCarrier);
printf (" Discarded:%-8lu\n", (unsigned long)m8260.scc3p.un.hdlc.disfc);
printf (" Tx Interrupts:%-8lu", sc->txInterrupts);
printf (" No Carrier:%-8lu", sc->txLostCarrier);
printf (" Underrun:%-8lu\n", sc->txUnderrun);
printf (" Raw output wait:%-8lu\n", sc->txRawWait);
}
/*
* Driver ioctl handler
*/
static int
scc_ioctl (struct ifnet *ifp, int command, caddr_t data)
{
struct m8260_hdlc_struct *sc = ifp->if_softc;
int error = 0;
switch (command) {
case SIOCGIFADDR:
case SIOCSIFADDR:
hdlc_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:
hdlc_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_scc3_driver_attach (struct rtems_bsdnet_ifconfig *config)
{
struct m8260_hdlc_struct *sc;
struct ifnet *ifp;
int mtu;
int i;
/*
* Find a free driver
*/
for (i = 0 ; i < NIFACES ; i++) {
sc = &hdlc_driver[i];
ifp = &sc->ac_if;
if (ifp->if_softc == NULL)
break;
}
if (i >= NIFACES) {
printf ("Too many SCC drivers.\n");
return 0;
}
#if 0
/*
* Process options
*/
if (config->hardware_address) {
memcpy (sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN);
}
else {
sc->arpcom.ac_enaddr[0] = 0x44;
sc->arpcom.ac_enaddr[1] = 0x22;
sc->arpcom.ac_enaddr[2] = 0x33;
sc->arpcom.ac_enaddr[3] = 0x33;
sc->arpcom.ac_enaddr[4] = 0x22;
sc->arpcom.ac_enaddr[5] = 0x44;
}
#endif
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 = i + 1;
ifp->if_name = "eth";
ifp->if_mtu = mtu;
ifp->if_init = scc_init;
ifp->if_ioctl = scc_ioctl;
ifp->if_start = m8260_hdlc_start;
ifp->if_output = hdlc_output;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | /*IFF_PROMISC |*/ IFF_NOARP;
if (ifp->if_snd.ifq_maxlen == 0)
ifp->if_snd.ifq_maxlen = ifqmaxlen;
/*
* Attach the interface
*/
if_attach (ifp);
hdlc_ifattach (ifp);
return 1;
};
int
rtems_enet_driver_attach(struct rtems_bsdnet_ifconfig *config, int attaching)
{
return rtems_scc3_driver_attach( config );
/*
if ((m8260.fec.mii_data & 0xffff) == 0x2000) {
return rtems_fec_driver_attach(config);
}
else {
return rtems_scc1_driver_attach(config);
}
*/
}
