/*
* 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
*
* $Id$
*/
#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 <bsp/irq.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 void m8xx_scc1_ethernet_isOn(const rtems_irq_connect_data* ptr)
{
int BSP_irq_enabled_at_cpm(const rtems_irq_symbolic_name );
BSP_irq_enabled_at_cpm (ptr->name);
}
/*
* SCC1 interrupt handler
*/
static void m8xx_scc1_interrupt_handler ()
{
/* 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_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_event_send (enet_driver[0].txDaemonTid, INTERRUPT_EVENT);
}
}
#ifdef MPC860T
/*
* FEC interrupt handler
*/
static void m860_fec_interrupt_handler ()
{
/*
* Frame received?
*/
if (m8xx.fec.ievent & M8xx_FEC_IEVENT_RFINT) {
m8xx.fec.ievent = M8xx_FEC_IEVENT_RFINT;
enet_driver[0].rxInterrupts++;
rtems_event_send (enet_driver[0].rxDaemonTid, INTERRUPT_EVENT);
}
/*
* Buffer transmitted or transmitter error?
*/
if (m8xx.fec.ievent & M8xx_FEC_IEVENT_TFINT) {
m8xx.fec.ievent = M8xx_FEC_IEVENT_TFINT;
enet_driver[0].txInterrupts++;
rtems_event_send (enet_driver[0].txDaemonTid, INTERRUPT_EVENT);
}
}
#endif
static rtems_irq_connect_data ethernetSCC1IrqData = {
BSP_CPM_IRQ_SCC1,
(rtems_irq_hdl) m8xx_scc1_interrupt_handler,
(rtems_irq_enable) m8xx_scc1_ethernet_on,
(rtems_irq_disable) m8xx_scc1_ethernet_off,
(rtems_irq_is_enabled)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;
}
#ifdef MPC860T
/*
* Please organize FEC controller code better by moving code from
* m860_fec_initialize_hardware to m8xx_fec_ethernet_on
*/
static void m8xx_fec_ethernet_on(){};
static void m8xx_fec_ethernet_off(){};
static int m8xx_fec_ethernet_isOn (const rtems_irq_connect_data* ptr)
{
return BSP_irq_enabled_at_siu (ptr->name);
}
static rtems_irq_connect_data ethernetFECIrqData = {
BSP_FAST_ETHERNET_CTRL,
(rtems_irq_hdl) m8xx_fec_interrupt_handler,
(rtems_irq_enable) m8xx_fec_ethernet_on,
(rtems_irq_disable) m8xx_fec_ethernet_off,
(rtems_irq_is_enabled)m8xx_fec_ethernet_isOn
};
static void
m860_fec_initialize_hardware (struct m860_enet_struct *sc)
{
int i;
unsigned char *hwaddr;
rtems_status_code status;
rtems_isr_entry old_handler;
/*
* Issue reset to FEC
*/
m8xx.fec.ecntrl=0x1;
/*
* Put ethernet transciever in reset
*/
m8xx.pgcra |= 0x80;
/*
* Configure I/O ports
*/
m8xx.pdpar = 0x1fff;
m8xx.pddir = 0x1c58;
/*
* Take ethernet transciever out of reset
*/
m8xx.pgcra &= ~0x80;
/*
* Set SIU interrupt level to LVL2
*
*/
m8xx.fec.ivec = ((((unsigned) BSP_FAST_ETHERNET_CTRL)/2) << 29);
/*
* Set the TX and RX fifo sizes. For now, we'll split it evenly
*/
/* If you uncomment these, the FEC will not work right.
m8xx.fec.r_fstart = ((m8xx.fec.r_bound & 0x3ff) >> 2) & 0x3ff;
m8xx.fec.x_fstart = 0;
*/
/*
* Set our physical address
*/
hwaddr = sc->arpcom.ac_enaddr;
m8xx.fec.addr_low = (hwaddr[0] << 24) | (hwaddr[1] << 16) |
(hwaddr[2] << 8) | (hwaddr[3] << 0);
m8xx.fec.addr_high = (hwaddr[4] << 24) | (hwaddr[5] << 16);
/*
* Clear the hash table
*/
m8xx.fec.hash_table_high = 0;
m8xx.fec.hash_table_low = 0;
/*
* Set up receive buffer size
*/
m8xx.fec.r_buf_size = 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 = m8xx_bd_allocate(sc->rxBdCount);
sc->txBdBase = m8xx_bd_allocate(sc->txBdCount);
m8xx.fec.r_des_start = (int)sc->rxBdBase;
m8xx.fec.x_des_start = (int)sc->txBdBase;
/*
* Set up Receive Control Register:
* Not promiscuous mode
* MII mode
* Half duplex
* No loopback
*/
m8xx.fec.r_cntrl = 0x00000006;
/*
* Set up Transmit Control Register:
* Half duplex
* No heartbeat
*/
m8xx.fec.x_cntrl = 0x00000000;
/*
* Set up DMA function code:
* Big-endian
* DMA functino code = 0
*/
m8xx.fec.fun_code = 0x78000000;
/*
* Initialize SDMA configuration register
* SDMA ignores FRZ
* FEC not aggressive
* FEC arbitration ID = 0 => U-bus arbitration = 6
* RISC arbitration ID = 1 => U-bus arbitration = 5
*/
m8xx.sdcr = 1;
/*
* Set MII speed to 2.5 MHz for 25 Mhz system clock
*/
m8xx.fec.mii_speed = 0x0a;
m8xx.fec.mii_data = 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
*/
m8xx.fec.imask = M8xx_FEC_IEVENT_TFINT |
M8xx_FEC_IEVENT_RFINT;
m8xx.fec.ievent = ~0;
/*
* Set up interrupts
*/
if (!BSP_install_rtems_irq_handler (ðernetFECIrqData))
rtems_panic ("Can't attach M860 FEC interrupt handler\n");
}
#endif
/*
* 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)
{
rtems_unsigned16 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
*/
/* FIXME: this should get executed only if using the SCC */
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;
rtems_unsigned16 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(rxBd->buffer, rxBd->length);
m = sc->rxMbuf[rxBdIndex];
m->m_len = m->m_pkthdr.len = rxBd->length -
sizeof(rtems_unsigned32) -
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;
}
}
#ifdef MPC860T
static void
fec_rxDaemon (void *arg)
{
struct m8xx_enet_struct *sc = (struct m8xx_enet_struct *)arg;
struct ifnet *ifp = &sc->arpcom.ac_if;
struct mbuf *m;
rtems_unsigned16 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.fec.r_des_active = 0x1000000;
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.fec.ievent = M8xx_FEC_IEVENT_RFINT;
/*
* 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.fec.ievent |= M8xx_FEC_IEVENT_RFINT;
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) {
/*
* 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(rxBd->buffer, rxBd->length);
m = sc->rxMbuf[rxBdIndex];
m->m_len = m->m_pkthdr.len = rxBd->length -
sizeof(rtems_unsigned32) -
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_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_EMPTY;
m8xx.fec.r_des_active = 0x1000000;
/*
* Move to next buffer descriptor
*/
if (++rxBdIndex == sc->rxBdCount)
rxBdIndex = 0;
}
}
#endif
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;
rtems_unsigned16 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(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;
}
}
#ifdef MPC860T
static void
fec_sendpacket (struct ifnet *ifp, struct mbuf *m)
{
struct m8xx_enet_struct *sc = ifp->if_softc;
volatile m8xxBufferDescriptor_t *firstTxBd, *txBd;
/* struct mbuf *l = NULL; */
rtems_unsigned16 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.fec.ievent = M8xx_FEC_IEVENT_TFINT;
/*
* 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.fec.ievent |= M8xx_FEC_IEVENT_TFINT;
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(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_LAST | M8xx_BD_TX_CRC;
txBd->status = status;
firstTxBd->status |= M8xx_BD_READY;
m8xx.fec.x_des_active = 0x1000000;
sc->txBdActiveCount += nAdded;
}
break;
}
txBd->status = status;
txBd = sc->txBdBase + sc->txBdHead;
}
}
#endif
/*
* 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;
}
}
#ifdef MPC860T
void
fec_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;
fec_sendpacket (ifp, m);
}
ifp->if_flags &= ~IFF_OACTIVE;
}
}
#endif
/*
* Send packet (caller provides header).
*/
static void
m8xx_enet_start (struct ifnet *ifp)
{
struct m8xx_enet_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 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;
}
#ifdef MPC860T
static void
fec_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_fec_initialize_hardware (sc);
/*
* Start driver tasks
*/
sc->txDaemonTid = rtems_bsdnet_newproc ("SCtx", 4096, fec_txDaemon, sc);
sc->rxDaemonTid = rtems_bsdnet_newproc ("SCrx", 4096, fec_rxDaemon, sc);
}
/*
* Set flags appropriately
*/
if (ifp->if_flags & IFF_PROMISC)
m8xx.fec.r_cntrl |= 0x8;
else
m8xx.fec.r_cntrl &= ~0x8;
/*
* Tell the world that we're running.
*/
ifp->if_flags |= IFF_RUNNING;
/*
* Enable receiver and transmitter
*/
m8xx.fec.ecntrl = 0x2;
}
#endif
/*
* 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;
}
#ifdef MPC860T
static void
fec_stop (struct m8xx_enet_struct *sc)
{
struct ifnet *ifp = &sc->arpcom.ac_if;
ifp->if_flags &= ~IFF_RUNNING;
/*
* Shut down receiver and transmitter
*/
m8xx.fec.ecntrl = 0x0;
}
#endif
/*
* 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, int 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;
}
#ifdef MPC860T
static int
fec_ioctl (struct ifnet *ifp, int 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:
fec_stop (sc);
break;
case IFF_UP:
fec_init (sc);
break;
case IFF_UP | IFF_RUNNING:
fec_stop (sc);
fec_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;
}
#endif
/*
* 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;
char *pAddr;
unsigned long addr;
/*
* 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
*/
#if NVRAM_CONFIGURE == 1
/* Configure from NVRAM */
if ( (addr = nvram->ipaddr) ) {
/* We have a non-zero entry, copy the value */
if ( (pAddr = malloc ( INET_ADDR_MAX_BUF_SIZE, 0, M_NOWAIT )) )
config->ip_address = (char *)inet_ntop(AF_INET, &addr, pAddr, INET_ADDR_MAX_BUF_SIZE -1 );
else
rtems_panic("Can't allocate ip_address buffer!\n");
}
if ( (addr = nvram->netmask) ) {
/* We have a non-zero entry, copy the value */
if ( (pAddr = malloc ( INET_ADDR_MAX_BUF_SIZE, 0, M_NOWAIT )) )
config->ip_netmask = (char *)inet_ntop(AF_INET, &addr, pAddr, INET_ADDR_MAX_BUF_SIZE -1 );
else
rtems_panic("Can't allocate ip_netmask buffer!\n");
}
/* Ethernet address requires special handling -- it must be copied into
* the arpcom struct. The following if construct serves only to give the
* User Area NVRAM parameter the highest priority.
*
* If the ethernet address is specified in NVRAM, go ahead and copy it.
* (ETHER_ADDR_LEN = 6 bytes).
*/
if ( nvram->enaddr[0] || nvram->enaddr[1] || nvram->enaddr[2] ) {
/* Anything in the first three bytes indicates a non-zero entry, copy value */
memcpy ((void *)sc->arpcom.ac_enaddr, &nvram->enaddr, ETHER_ADDR_LEN);
}
else if ( config->hardware_address ) {
/* There is no entry in NVRAM, but there is in the ifconfig struct, so use it. */
memcpy ((void *)sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN);
}
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");
}
#else /* NVRAM_CONFIGURE != 1 */
if (config->hardware_address) {
memcpy (sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN);
}
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");
}
#endif /* NVRAM_CONFIGURE != 1 */
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;
};
#ifdef MPC860T
int
rtems_fec_driver_attach (struct rtems_bsdnet_ifconfig *config)
{
struct m8xx_enet_struct *sc;
struct ifnet *ifp;
int mtu;
int unitNumber;
char *unitName;
/*
* 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
*/
if (config->hardware_address) {
memcpy (sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN);
}
else {
/* FIXME to read the enaddr from NVRAM */
}
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 = fec_init;
ifp->if_ioctl = fec_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;
};
#endif
int
rtems_enet_driver_attach(struct rtems_bsdnet_ifconfig *config, int attaching)
{
#ifdef MPC860T
if ((m8xx.fec.mii_data & 0xffff) == 0x2000) {
/* rtems_scc1_driver_attach(config);*/
return rtems_fec_driver_attach(config);
}
else {
#endif
return rtems_scc1_driver_attach(config);
#ifdef MPC860T
}
#endif
}
