summaryrefslogtreecommitdiffstats
path: root/bsps/powerpc/mvme5500/net/if_100MHz/GT64260eth.c
diff options
context:
space:
mode:
Diffstat (limited to 'bsps/powerpc/mvme5500/net/if_100MHz/GT64260eth.c')
-rw-r--r--bsps/powerpc/mvme5500/net/if_100MHz/GT64260eth.c1574
1 files changed, 0 insertions, 1574 deletions
diff --git a/bsps/powerpc/mvme5500/net/if_100MHz/GT64260eth.c b/bsps/powerpc/mvme5500/net/if_100MHz/GT64260eth.c
deleted file mode 100644
index 91f90cc4f3..0000000000
--- a/bsps/powerpc/mvme5500/net/if_100MHz/GT64260eth.c
+++ /dev/null
@@ -1,1574 +0,0 @@
-/* GT64260eth.c : GT64260 10/100 Mb ethernet MAC driver
- *
- * Copyright (c) 2003,2004 Brookhaven National Laboratory
- * S. Kate Feng <feng1@bnl.gov>
- * All rights reserved
- *
- * Acknowledgements:
- * netBSD : Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc.
- * Marvell : NDA document for the discovery system controller
- *
- * Some notes from the author, S. Kate Feng :
- *
- * 1) Mvme5500 uses Eth0 (controller 0) of the GT64260 to implement
- * the 10/100 BaseT Ethernet with PCI Master Data Byte Swap\
- * control.
- * 2) Implemented hardware snoop instead of software snoop
- * to ensure SDRAM cache coherency. (Copyright : NDA item)
- * 3) Added S/W support for multi mbuf. (TODO : Let the H/W do it)
- *
- */
-
-#include <machine/rtems-bsd-kernel-space.h>
-
-#define BYTE_ORDER BIG_ENDIAN
-
-#include <rtems.h>
-#include <rtems/bspIo.h> /* printk */
-#include <rtems/error.h>
-#include <rtems/rtems_bsdnet.h>
-#include <rtems/rtems_bsdnet_internal.h>
-#include <stdio.h> /* printf for statistics */
-#include <string.h>
-
-#include <libcpu/io.h> /* inp & friends */
-#include <libcpu/spr.h> /* registers.h is included here */
-#include <bsp.h>
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/mbuf.h>
-
-#include <errno.h>
-
-/* #include <sys/queue.h> */
-
-#include <sys/socket.h>
-#include <sys/sockio.h> /* SIOCADDMULTI, SIOC... */
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <netinet/in.h>
-#include <netinet/if_ether.h>
-
-#ifdef INET
-#include <netinet/in_var.h>
-#endif
-
-#include <bsp/irq.h>
-#include <bsp/GT64260ethreg.h>
-#include <bsp/GT64260eth.h>
-#include <bsp/VPD.h>
-
-extern unsigned char ReadConfVPD_buff(int offset); /* in startup/bspstart.c */
-
-#define GT_ETH_TASK_NAME "Geth"
-#define PKT_BUF_SZ 1536
-#define SOFTC_ALIGN 31
-#define HASH_ALIGN 15
-
-#define TXQ_HiLmt_OFF 2
-
-/* <skf>
- * 1. printk debug is for diagnosis only, which may cause
- * unexpected result, especially if txq is under heavy load
- * because CPU is fast with a decent cache.
- */
-#define GTeth_debug 0
-#define GTeth_rx_debug 0
-
-#if 0
-#define GE_FORGOT
-#define GE_NORX
-#define GT_DEBUG
-#endif
-
-/* RTEMS event to kill the daemon */
-#define KILL_EVENT RTEMS_EVENT_1
-/* RTEMS event to (re)start the transmitter */
-#define START_TRANSMIT_EVENT RTEMS_EVENT_2
-/* RTEMS events used by the ISR */
-#define RX_EVENT RTEMS_EVENT_3
-#define TX_EVENT RTEMS_EVENT_4
-#define ERR_EVENT RTEMS_EVENT_5
-
-#define ALL_EVENTS (KILL_EVENT|START_TRANSMIT_EVENT|RX_EVENT|TX_EVENT|ERR_EVENT)
-
-enum GTeth_whack_op {
- GE_WHACK_START, GE_WHACK_RESTART,
- GE_WHACK_CHANGE, GE_WHACK_STOP
-};
-
-enum GTeth_hash_op {
- GE_HASH_ADD, GE_HASH_REMOVE,
-};
-
-#define ET_MINLEN 64 /* minimum message length */
-
-static int GTeth_ifioctl(struct ifnet *ifp, ioctl_command_t cmd, caddr_t data);
-static void GTeth_ifstart (struct ifnet *);
-static void GTeth_ifchange(struct GTeth_softc *sc);
-static void GTeth_init_rx_ring(struct GTeth_softc *sc);
-static void GT64260eth_daemon(void *arg);
-static int GT64260eth_sendpacket(struct GTeth_softc *sc,struct mbuf *m);
-static unsigned GTeth_txq_done(struct GTeth_softc *sc);
-static void GTeth_tx_cleanup(struct GTeth_softc *sc);
-static void GTeth_tx_start(struct GTeth_softc *sc);
-static void GTeth_tx_stop(struct GTeth_softc *sc);
-static void GTeth_rx_cleanup(struct GTeth_softc *sc);
-static int GT64260eth_rx(struct GTeth_softc *sc);
-static void GTeth_rx_setup(struct GTeth_softc *sc);
-static void GTeth_rxprio_setup(struct GTeth_softc *sc);
-static void GTeth_rx_stop(struct GTeth_softc *dc);
-static void GT64260eth_isr(void);
-static int GTeth_hash_compute(struct GTeth_softc *sc,unsigned char eaddr[ETHER_ADDR_LEN]);
-static int GTeth_hash_entry_op(struct GTeth_softc *sc, enum GTeth_hash_op op,
- enum GTeth_rxprio prio,unsigned char eaddr[ETHER_ADDR_LEN]);
-
-static int GTeth_hash_fill(struct GTeth_softc *sc);
-static void GTeth_hash_init(struct GTeth_softc *sc);
-
-static struct GTeth_softc *root_GT64260eth_dev = NULL;
-
-static void GT64260eth_irq_on(const rtems_irq_connect_data *irq)
-{
- struct GTeth_softc *sc;
-
- for (sc= root_GT64260eth_dev; sc; sc= sc-> next_module) {
- outl(0x30883444,ETH0_EIMR); /* MOTLoad default interrupt mask */
- return;
- }
-}
-
-static void GT64260eth_irq_off(const rtems_irq_connect_data *irq)
-{
- struct GTeth_softc *sc;
-
- for (sc= root_GT64260eth_dev; sc; sc= sc-> next_module)
- outl(0, ETH0_EIMR);
-}
-
-static int GT64260eth_irq_is_on(const rtems_irq_connect_data *irq)
-{
- return(inl(ETH0_EICR) & ETH_IR_EtherIntSum);
-}
-
-static void GT64260eth_isr(void)
-{
- struct GTeth_softc *sc = root_GT64260eth_dev;
- rtems_event_set events=0;
- uint32_t cause;
-
-
- cause = inl(ETH0_EICR);
- outl( ~cause,ETH0_EICR); /* clear the ICR */
-
- if ( (!cause) || (cause & 0x803d00)) {
- sc->intr_errsts[sc->intr_err_ptr2++]=cause;
- sc->intr_err_ptr2 %=INTR_ERR_SIZE; /* Till Straumann */
- events |= ERR_EVENT;
- }
-
- /* ETH_IR_RxBuffer_3|ETH_IR_RxError_3 */
- if (cause & 0x880000) {
- sc->stats.rxInterrupts++;
- events |= RX_EVENT;
- }
- /* If there is an error, we want to continue to next descriptor */
- /* ETH_IR_TxBufferHigh|ETH_IR_TxEndHigh|ETH_IR_TxErrorHigh */
- if (cause & 0x444) {
- sc->stats.txInterrupts++;
- events |= TX_EVENT;
- /* It seems to be unnecessary. However, it's there
- * to be on the safe side due to the datasheet.
- * So far, it does not seem to affect the network performance
- * based on the EPICS catime.
- */
- /* ETH_ESDCMR_TXDH | ETH_ESDCMR_ERD = 0x800080 */
- if ((sc->txq_nactive > 1)&& ((inl(ETH0_ESDCMR)&ETH_ESDCMR_TXDH)==0))
- outl(0x800080,ETH0_ESDCMR);
-
-
- }
- rtems_bsdnet_event_send(sc->daemonTid, events);
-}
-
-static rtems_irq_connect_data GT64260ethIrqData={
- BSP_MAIN_ETH0_IRQ,
- (rtems_irq_hdl) GT64260eth_isr,
- NULL,
- (rtems_irq_enable) GT64260eth_irq_on,
- (rtems_irq_disable) GT64260eth_irq_off,
- (rtems_irq_is_enabled) GT64260eth_irq_is_on,
-};
-
-static void GT64260eth_init_hw(struct GTeth_softc *sc)
-{
-
-#ifdef GT_DEBUG
- printk("GT64260eth_init_hw(");
-#endif
- /* Kate Feng : Turn the hardware snoop on as MOTLoad did not have
- * it on by default.
- */
- outl(RxBSnoopEn|TxBSnoopEn|RxDSnoopEn|TxDSnoopEn, GT_CUU_Eth0_AddrCtrlLow);
- outl(HashSnoopEn, GT_CUU_Eth0_AddrCtrlHigh);
-
- sc->rxq_intrbits=0;
- sc->sc_flags=0;
-
-#ifndef GE_NORX
- GTeth_rx_setup(sc);
-#endif
-
-#ifndef GE_NOTX
- GTeth_tx_start(sc);
-#endif
-
- sc->sc_pcr |= ETH_EPCR_HS_512;
- outl(sc->sc_pcr, ETH0_EPCR);
- outl(sc->sc_pcxr, ETH0_EPCXR); /* port config. extended reg. */
- outl(0, ETH0_EICR); /* interrupt cause register */
- outl(sc->sc_intrmask, ETH0_EIMR);
-#ifndef GE_NOHASH
- /* Port Hash Table Pointer Reg*/
- outl(((unsigned) sc->sc_hashtable),ETH0_EHTPR);
-#endif
-#ifndef GE_NORX
- outl(ETH_ESDCMR_ERD,ETH0_ESDCMR); /* enable Rx DMA in SDMA Command Register */
- sc->sc_flags |= GE_RXACTIVE;
-#endif
-#ifdef GT_DEBUG
- printk("SDCMR 0x%x ", inl(ETH0_ESDCMR));
-#endif
-
- /* connect the interrupt handler which should
- * take care of enabling interrupts
- */
- if (!BSP_install_rtems_irq_handler(&GT64260ethIrqData))
- printk("GT64260eth: unable to install ISR");
-
- /* The ethernet port is ready to transmit/receive */
- outl(sc->sc_pcr | ETH_EPCR_EN, ETH0_EPCR);
-
-#ifdef GT_DEBUG
- printk(")\n");
-#endif
-}
-
-static void GT64260eth_stop_hw(struct GTeth_softc *sc)
-{
-
- printk("GT64260eth_stop_hw(");
-
- /* remove our interrupt handler which will also
- * disable interrupts at the MPIC and the device
- * itself
- */
- if (!BSP_remove_rtems_irq_handler(&GT64260ethIrqData))
- printk("GT64260eth: unable to remove IRQ handler!");
-
- outl(sc->sc_pcr, ETH0_EPCR);
- outl(0, ETH0_EIMR);
-
- sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING;
-#ifndef GE_NOTX
- GTeth_tx_stop(sc);
-#endif
-#ifndef GE_NORX
- GTeth_rx_stop(sc);
-#endif
- sc->sc_hashtable = NULL;
- if (GTeth_debug>0) printk(")");
-}
-
-static void GT64260eth_stop(struct GTeth_softc *sc)
-{
- if (GTeth_debug>0) printk("GT64260eth_stop(");
-
- /* The hardware is shutdown in the daemon */
- /* kill the daemon. We also must release the networking
- * semaphore or there'll be a deadlock...
- */
- rtems_bsdnet_event_send(sc->daemonTid, KILL_EVENT);
- rtems_bsdnet_semaphore_release();
-
- sc->daemonTid=0;
- /* now wait for it to die */
- rtems_semaphore_obtain(sc->daemonSync,RTEMS_WAIT,RTEMS_NO_TIMEOUT);
-
- /* reacquire the bsdnet semaphore */
- rtems_bsdnet_semaphore_obtain();
- if (GTeth_debug>0) printk(")");
-}
-
-static void GT64260eth_ifinit(void *arg)
-{
- struct GTeth_softc *sc = (struct GTeth_softc*)arg;
- int i;
-
-#ifdef GT_DEBUG
- printk("GT64260eth_ifinit(): daemon ID: 0x%08x)\n", sc->daemonTid);
-#endif
- if (sc->daemonTid) {
-#ifdef GT_DEBUG
- printk("GT64260eth: daemon already up, doing nothing\n");
-#endif
- return;
- }
-
-#ifndef GE_NOHASH
- /* Mvme5500, the user must initialize the hash table before enabling the
- * Ethernet controller
- */
- GTeth_hash_init(sc);
- GTeth_hash_fill(sc);
-#endif
-
- sc->intr_err_ptr1=0;
- sc->intr_err_ptr2=0;
- for (i=0; i< INTR_ERR_SIZE; i++) sc->intr_errsts[i]=0;
-
- /* initialize the hardware (we are holding the network semaphore at this point) */
- (void)GT64260eth_init_hw(sc);
-
- /* launch network daemon */
-
- /* NOTE:
- * in ss-20011025 (and later) any task created by 'bsdnet_newproc' is
- * wrapped by code which acquires the network semaphore...
- */
- sc->daemonTid = rtems_bsdnet_newproc(GT_ETH_TASK_NAME,4096,GT64260eth_daemon,arg);
-
- /* Tell the world that we're running */
- sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
-
-}
-
-/* attach parameter tells us whether to attach or to detach the driver */
-/* Attach this instance, and then all the sub-devices */
-int rtems_GT64260eth_driver_attach(struct rtems_bsdnet_ifconfig *config, int attach)
-{
- struct GTeth_softc *sc;
- struct ifnet *ifp;
- unsigned sdcr, data;
- unsigned char hwaddr[6];
- int i, unit, phyaddr;
- void *softc_mem;
- char *name;
-
- unit = rtems_bsdnet_parse_driver_name(config, &name);
- if (unit < 0) return 0;
-
- printk("\nEthernet driver name %s unit %d \n",name, unit);
- printk("RTEMS-mvme5500 BSP Copyright (c) 2004, Brookhaven National Lab., Shuchen Kate Feng \n");
- /* Make certain elements e.g. descriptor lists are aligned. */
- softc_mem = rtems_bsdnet_malloc(sizeof(*sc) + SOFTC_ALIGN, M_FREE, M_NOWAIT);
-
- /* Check for the very unlikely case of no memory. */
- if (softc_mem == NULL)
- printk("GT64260eth: OUT OF MEMORY");
-
- sc = (void *)(((long)softc_mem + SOFTC_ALIGN) & ~SOFTC_ALIGN);
- memset(sc, 0, sizeof(*sc));
-
- if (GTeth_debug>0) printk("txq_desc[0] addr:%x, rxq_desc[0] addr:%x, sizeof sc %d\n",&sc->txq_desc[0], &sc->rxq_desc[0], sizeof(*sc));
-
- sc->sc_macno = unit-1;
-
- data = inl(ETH_EPAR);
- phyaddr = ETH_EPAR_PhyAD_GET(data, sc->sc_macno);
-
- /* try to read HW address from the device if not overridden
- * by config
- */
- if (config->hardware_address) {
- memcpy(hwaddr, config->hardware_address, ETHER_ADDR_LEN);
- } else {
- printk("Read EEPROM ");
- for (i = 0; i < 6; i++)
- hwaddr[i] = ReadConfVPD_buff(VPD_ENET0_OFFSET+i);
- }
-
-#ifdef GT_DEBUG
- printk("using MAC addr from device:");
- for (i = 0; i < ETHER_ADDR_LEN; i++) printk("%x:", hwaddr[i]);
- printk("\n");
-#endif
-
- memcpy(sc->arpcom.ac_enaddr, hwaddr, ETHER_ADDR_LEN);
-
- ifp = &sc->arpcom.ac_if;
-
- sc->sc_pcr = inl(ETH0_EPCR);
- sc->sc_pcxr = inl(ETH0_EPCXR);
- sc->sc_intrmask = inl(ETH0_EIMR) | ETH_IR_MIIPhySTC;
-
- printk("address %s\n", ether_sprintf(hwaddr));
-
-#ifdef GT_DEBUG
- printk(", pcr %x, pcxr %x ", sc->sc_pcr, sc->sc_pcxr);
-#endif
-
-
- sc->sc_pcxr |= ETH_EPCXR_PRIOrx_Override;
- sc->sc_pcxr |= (3<<6); /* highest priority only */
- sc->sc_pcxr &= ~ETH_EPCXR_RMIIEn; /* MII mode */
-
- /* Max. Frame Length (packet) allowed for reception is 1536 bytes,
- * instead of 2048 (MOTLoad default) or 64K.
- */
- sc->sc_pcxr &= ~(3 << 14);
- sc->sc_pcxr |= (ETH_EPCXR_MFL_1536 << 14);
- sc->sc_max_frame_length = PKT_BUF_SZ;
-
-
- if (sc->sc_pcr & ETH_EPCR_EN) {
- int tries = 1000;
- /* Abort transmitter and receiver and wait for them to quiese*/
- outl(ETH_ESDCMR_AR|ETH_ESDCMR_AT,ETH0_ESDCMR);
- do {
- rtems_bsp_delay(100);
- } while (tries-- > 0 && (inl(ETH0_ESDCMR) & (ETH_ESDCMR_AR|ETH_ESDCMR_AT)));
- }
-#ifdef GT_DEBUG
- printk(", phy %d (mii)\n", phyaddr);
- printk("ETH0_ESDCMR %x ", inl(ETH0_ESDCMR));
-#endif
-
- sc->sc_pcr &= ~(ETH_EPCR_EN | ETH_EPCR_RBM | ETH_EPCR_PM | ETH_EPCR_PBF);
-
-#ifdef GT_DEBUG
- printk("Now sc_pcr %x,sc_pcxr %x", sc->sc_pcr, sc->sc_pcxr);
-#endif
-
- /*
- * Now turn off the GT. If it didn't quiese, too ***ing bad.
- */
- outl(sc->sc_pcr, ETH0_EPCR);
- outl(sc->sc_intrmask, ETH0_EIMR);
- sdcr = inl(ETH0_ESDCR);
- /* Burst size is limited to 4 64bit words */
- ETH_ESDCR_BSZ_SET(sdcr, ETH_ESDCR_BSZ_4);
- sdcr |= ETH_ESDCR_RIFB;/*limit interrupt on frame boundaries, instead of buffer*/
-#if 0
- sdcr &= ~(ETH_ESDCR_BLMT|ETH_ESDCR_BLMR); /* MOTLoad defualt Big-endian */
-#endif
- outl(sdcr, ETH0_ESDCR);
-
-#ifdef GT_DEBUG
- printk("sdcr %x \n", sdcr);
-#endif
-
- if (phyaddr== -1) printk("MII auto negotiation ?");
-
- ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
-
- ifp->if_softc = sc;
-
- /* set this interface's name and unit */
- ifp->if_unit = unit;
- ifp->if_name = name;
-
- ifp->if_mtu = config->mtu ? config->mtu : ETHERMTU;
-
- ifp->if_init = GT64260eth_ifinit;
- ifp->if_ioctl = GTeth_ifioctl;
- ifp->if_start = GTeth_ifstart;
- ifp->if_output = ether_output;
-
- /* ifp->if_watchdog = GTeth_ifwatchdog;*/
-
- if (ifp->if_snd.ifq_maxlen == 0)
- ifp->if_snd.ifq_maxlen = ifqmaxlen;
-
- /* create the synchronization semaphore */
- if (RTEMS_SUCCESSFUL != rtems_semaphore_create(
- rtems_build_name('G','e','t','h'),0,0,0,&sc->daemonSync))
- printk("GT64260eth: semaphore creation failed");
-
- sc->next_module = root_GT64260eth_dev;
- root_GT64260eth_dev = sc;
-
- /* Actually attach the interface */
- if_attach(ifp);
- ether_ifattach(ifp);
-
-#ifdef GT_DEBUG
- printk("GT64260eth: Ethernet driver has been attached (handle 0x%08x,ifp 0x%08x)\n",sc, ifp);
-#endif
-
- return(1);
-}
-
-static void GT64260eth_stats(struct GTeth_softc *sc)
-{
-#if 0
- struct ifnet *ifp = &sc->arpcom.ac_if;
-
- printf(" Rx Interrupts:%-8lu\n", sc->stats.rxInterrupts);
- printf(" Receive Packets:%-8lu\n", ifp->if_ipackets);
- printf(" Receive errors:%-8lu\n", ifp->if_ierrors);
- printf(" Framing Errors:%-8lu\n", sc->stats.frame_errors);
- printf(" Crc Errors:%-8lu\n", sc->stats.crc_errors);
- printf(" Oversized Frames:%-8lu\n", sc->stats.length_errors);
- printf(" Active Rxqs:%-8u\n", sc->rxq_active);
- printf(" Tx Interrupts:%-8lu\n", sc->stats.txInterrupts);
-#endif
- printf("Multi-BuffTx Packets:%-8lu\n", sc->stats.txMultiBuffPacket);
- printf("Multi-BuffTx max len:%-8lu\n", sc->stats.txMultiMaxLen);
- printf("SingleBuffTx max len:%-8lu\n", sc->stats.txSinglMaxLen);
- printf("Multi-BuffTx maxloop:%-8lu\n", sc->stats.txMultiMaxLoop);
- printf("Tx buffer max len :%-8lu\n", sc->stats.txBuffMaxLen);
-#if 0
- printf(" Transmitt Packets:%-8lu\n", ifp->if_opackets);
- printf(" Transmitt errors:%-8lu\n", ifp->if_oerrors);
- printf(" Tx/Rx collisions:%-8lu\n", ifp->if_collisions);
- printf(" Active Txqs:%-8u\n", sc->txq_nactive);
-#endif
-}
-
-void GT64260eth_printStats(void)
-{
- GT64260eth_stats(root_GT64260eth_dev);
-}
-
-static int GTeth_ifioctl(struct ifnet *ifp, ioctl_command_t cmd, caddr_t data)
-{
- struct GTeth_softc *sc = ifp->if_softc;
- struct ifreq *ifr = (struct ifreq *) data;
-
- int error = 0;
-
-#ifdef GT_DEBUG
- printk("GTeth_ifioctl(");
-#endif
-
- switch (cmd) {
- default:
- if (GTeth_debug >0) {
- printk("etherioctl(");
- if (cmd== SIOCSIFADDR) printk("SIOCSIFADDR ");
- }
- return ether_ioctl(ifp, cmd, data);
-
- case SIOCSIFFLAGS:
- switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) {
- case IFF_RUNNING: /* not up, so we stop */
- GT64260eth_stop(sc);
- break;
- case IFF_UP: /* not running, so we start */
- GT64260eth_ifinit(sc);
- break;
- case IFF_UP|IFF_RUNNING:/* active->active, update */
- GT64260eth_stop(sc);
- GT64260eth_ifinit(sc);
- break;
- default: /* idle->idle: do nothing */
- break;
- }
- break;
- case SIO_RTEMS_SHOW_STATS:
- GT64260eth_stats (sc);
- break;
- case SIOCADDMULTI:
- case SIOCDELMULTI:
- error = (cmd == SIOCADDMULTI)
- ? ether_addmulti(ifr, &sc->arpcom)
- : ether_delmulti(ifr, &sc->arpcom);
- if (error == ENETRESET) {
- if (ifp->if_flags & IFF_RUNNING)
- GTeth_ifchange(sc);
- else
- error = 0;
- }
- break;
- case SIOCSIFMTU:
- if (ifr->ifr_mtu > ETHERMTU || ifr->ifr_mtu < ETHERMIN) {
- error = EINVAL;
- break;
- }
- ifp->if_mtu = ifr->ifr_mtu;
- break;
- }
-
-#ifdef GT_DEBUG
- printk("exit ioctl\n");
-#endif
- return error;
-}
-
-static void GTeth_ifstart(struct ifnet *ifp)
-{
- struct GTeth_softc *sc = ifp->if_softc;
-
-#ifdef GT_DEBUG
- printk("GTeth_ifstart(");
-#endif
-
- if ((ifp->if_flags & IFF_RUNNING) == 0) {
-#ifdef GT_DEBUG
- printk("IFF_RUNNING==0\n");
-#endif
- return;
- }
-
- ifp->if_flags |= IFF_OACTIVE;
- rtems_bsdnet_event_send (sc->daemonTid, START_TRANSMIT_EVENT);
-#ifdef GT_DEBUG
- printk(")\n");
-#endif
-}
-
-/* Initialize the Rx rings */
-static void GTeth_init_rx_ring(struct GTeth_softc *sc)
-{
- int i;
- volatile struct GTeth_desc *rxd;
- unsigned nxtaddr;
-
- sc->rxq_fi=0;
- sc->rxq_head_desc = &sc->rxq_desc[0];
- rxd = sc->rxq_head_desc;
-
- sc->rxq_desc_busaddr = (unsigned long) sc->rxq_head_desc;
-#ifdef GT_DEBUG
- printk("rxq_desc_busaddr %x ,&sc->rxq_desc[0] %x\n",
- sc->rxq_desc_busaddr, sc->rxq_head_desc);
-#endif
-
- nxtaddr = sc->rxq_desc_busaddr + sizeof(*rxd);
- sc->rx_buf_sz = (sc->arpcom.ac_if.if_mtu <= 1500 ? PKT_BUF_SZ : sc->arpcom.ac_if.if_mtu + 32);
- sc->rxq_active = RX_RING_SIZE;
-
- for (i = 0; i < RX_RING_SIZE; i++, rxd++, nxtaddr += sizeof(*rxd)) {
- struct mbuf *m;
-
- rxd->ed_lencnt= sc->rx_buf_sz <<16;
- rxd->ed_cmdsts = RX_CMD_F|RX_CMD_L|RX_CMD_O|RX_CMD_EI;
-
- MGETHDR(m, M_WAIT, MT_DATA);
- MCLGET(m, M_WAIT);
- m->m_pkthdr.rcvif = &sc->arpcom.ac_if;
- sc->rxq_mbuf[i] = m;
-
- /* convert mbuf pointer to data pointer of correct type */
- rxd->ed_bufptr = (unsigned) mtod(m, void *);
-
- /*
- * update the nxtptr to point to the next txd.
- */
- if (i == RX_RING_SIZE - 1)
- nxtaddr = sc->rxq_desc_busaddr;
- rxd->ed_nxtptr = nxtaddr;
-
-#ifdef GT_DEBUG
- printk("ed_lencnt %x, rx_buf_sz %x ",rxd->ed_lencnt, sc->rx_buf_sz);
- printk("ed_cmdsts %x \n",rxd->ed_cmdsts);
- printk("mbuf @ 0x%x, next desc. @ 0x%x\n",rxd->ed_bufptr,rxd->ed_nxtptr);
-#endif
- }
-}
-
-void GTeth_rxprio_setup(struct GTeth_softc *sc)
-{
-
- GTeth_init_rx_ring(sc);
-
- sc->rxq_intrbits = ETH_IR_RxBuffer|ETH_IR_RxError|ETH_IR_RxBuffer_3|ETH_IR_RxError_3;
-}
-
-static int GT64260eth_rx(struct GTeth_softc *sc)
-{
- struct ifnet *ifp = &sc->arpcom.ac_if;
- struct mbuf *m;
- int nloops=0;
-
-#ifdef GT_DEBUG
- if (GTeth_rx_debug>0) printk("GT64260eth_rx(");
-#endif
-
- while (sc->rxq_active > 0) {
- volatile struct GTeth_desc *rxd = &sc->rxq_desc[sc->rxq_fi];
- struct ether_header *eh;
- unsigned int cmdsts;
- unsigned int byteCount;
-
- cmdsts = rxd->ed_cmdsts;
-
- /*
- * Sometimes the GE "forgets" to reset the ownership bit.
- * But if the length has been rewritten, the packet is ours
- * so pretend the O bit is set.
- *
- */
- byteCount = rxd->ed_lencnt & 0xffff;
-
- if (cmdsts & RX_CMD_O) {
- if (byteCount == 0)
- return(0);
-
- /* <Kate Feng> Setting command/status to be zero seems to eliminate
- * the spurious interrupt associated with the GE_FORGOT issue.
- */
- rxd->ed_cmdsts=0;
-
-#ifdef GE_FORGOT
- /*
- * For dignosis purpose only. Not a good practice to turn it on
- */
- printk("Rxq %d %d %d\n", sc->rxq_fi, byteCount,nloops);
-#endif
- }
-
- /* GT gave the ownership back to the CPU or the length has
- * been rewritten , which means there
- * is new packet in the descriptor/buffer
- */
-
- nloops++;
- /*
- * If this is not a single buffer packet with no errors
- * or for some reason it's bigger than our frame size,
- * ignore it and go to the next packet.
- */
- if ((cmdsts & (RX_CMD_F|RX_CMD_L|RX_STS_ES)) !=
- (RX_CMD_F|RX_CMD_L) ||
- byteCount > sc->sc_max_frame_length) {
- --sc->rxq_active;
- ifp->if_ipackets++;
- ifp->if_ierrors++;
- if (cmdsts & RX_STS_OR) sc->stats.or_errors++;
- if (cmdsts & RX_STS_CE) sc->stats.crc_errors++;
- if (cmdsts & RX_STS_MFL) sc->stats.length_errors++;
- if (cmdsts & RX_STS_SF) sc->stats.frame_errors++;
- if ((cmdsts & RX_STS_LC) || (cmdsts & RX_STS_COL))
- ifp->if_collisions++;
- /* recycle the buffer */
- m->m_len=sc->rx_buf_sz;
- }
- else {
- m = sc->rxq_mbuf[sc->rxq_fi];
- m->m_len = m->m_pkthdr.len = byteCount - sizeof(struct ether_header);
- eh = mtod (m, struct ether_header *);
- m->m_data += sizeof(struct ether_header);
- ether_input (ifp, eh, m);
-
- ifp->if_ipackets++;
- ifp->if_ibytes+=byteCount;
- --sc->rxq_active;
- MGETHDR (m, M_WAIT, MT_DATA);
- MCLGET (m, M_WAIT);
- }
- m->m_pkthdr.rcvif = ifp;
- sc->rxq_mbuf[sc->rxq_fi]= m;
- /* convert mbuf pointer to data pointer of correct type */
- rxd->ed_bufptr = (unsigned) mtod(m, void*);
- rxd->ed_lencnt = (unsigned long) sc->rx_buf_sz <<16;
- rxd->ed_cmdsts = RX_CMD_F|RX_CMD_L|RX_CMD_O|RX_CMD_EI;
-
- if (++sc->rxq_fi == RX_RING_SIZE) sc->rxq_fi = 0;
-
- sc->rxq_active++;
- } /* while (sc->rxq_active > 0) */
-#ifdef GT_DEBUG
- if (GTeth_rx_debug>0) printk(")");
-#endif
- return nloops;
-}
-
-static void GTeth_rx_setup(struct GTeth_softc *sc)
-{
-
- if (GTeth_rx_debug>0) printk("GTeth_rx_setup(");
-
- GTeth_rxprio_setup(sc);
-
- if ((sc->sc_flags & GE_RXACTIVE) == 0) {
- /* First Rx Descriptor Pointer 3 */
- outl( sc->rxq_desc_busaddr, ETH0_EFRDP3);
- /* Current Rx Descriptor Pointer 3 */
- outl( sc->rxq_desc_busaddr,ETH0_ECRDP3);
-#ifdef GT_DEBUG
- printk("ETH0_EFRDP3 0x%x, ETH0_ECRDP3 0x%x \n", inl(ETH0_EFRDP3),
- inl(ETH0_ECRDP3));
-#endif
- }
- sc->sc_intrmask |= sc->rxq_intrbits;
-
- if (GTeth_rx_debug>0) printk(")\n");
-}
-
-static void GTeth_rx_cleanup(struct GTeth_softc *sc)
-{
- int i;
-
- if (GTeth_rx_debug>0) printk( "GTeth_rx_cleanup(");
-
- for (i=0; i< RX_RING_SIZE; i++) {
- if (sc->rxq_mbuf[i]) {
- m_freem(sc->rxq_mbuf[i]);
- sc->rxq_mbuf[i]=0;
- }
- }
- if (GTeth_rx_debug>0) printk(")");
-}
-
-static void GTeth_rx_stop(struct GTeth_softc *sc)
-{
- if (GTeth_rx_debug>0) printk( "GTeth_rx_stop(");
- sc->sc_flags &= ~GE_RXACTIVE;
- sc->sc_idlemask &= ~(ETH_IR_RxBits|ETH_IR_RxBuffer_3|ETH_IR_RxError_3);
- sc->sc_intrmask &= ~(ETH_IR_RxBits|ETH_IR_RxBuffer_3|ETH_IR_RxError_3);
- outl(sc->sc_intrmask, ETH0_EIMR);
- outl(ETH_ESDCMR_AR, ETH0_ESDCMR); /* abort receive */
- do {
- rtems_bsp_delay(10);
- } while (inl(ETH0_ESDCMR) & ETH_ESDCMR_AR);
- GTeth_rx_cleanup(sc);
- if (GTeth_rx_debug>0) printk(")");
-}
-
-static void GTeth_txq_free(struct GTeth_softc *sc, unsigned cmdsts)
-{
- struct ifnet *ifp = &sc->arpcom.ac_if;
- volatile struct GTeth_desc *txd = &sc->txq_desc[sc->txq_fi];
-
- /* ownership is sent back to CPU */
- if (GTeth_debug>0) printk("txq%d,active %d\n", sc->txq_fi, sc->txq_nactive);
-
- txd->ed_cmdsts &= ~TX_CMD_O; /* <skf> in case GT forgot */
-
- /* statistics */
- ifp->if_opackets++;
- ifp->if_obytes += sc->txq_mbuf[sc->txq_fi]->m_len;
- if (cmdsts & TX_STS_ES) {
- ifp->if_oerrors++;
- if ((cmdsts & TX_STS_LC) || (cmdsts & TX_STS_COL))
- ifp->if_collisions++;
- }
- /* Free the original mbuf chain */
- m_freem(sc->txq_mbuf[sc->txq_fi]);
- sc->txq_mbuf[sc->txq_fi] = 0;
- ifp->if_timer = 5;
-
- sc->txq_free++;
- if (++sc->txq_fi == TX_RING_SIZE) sc->txq_fi = 0;
- --sc->txq_nactive;
-}
-
-#if UNUSED
-static int txq_high_limit(struct GTeth_softc *sc)
-{
- /*
- * Have we [over]consumed our limit of descriptors?
- * Do we have enough free descriptors?
- */
- if ( TX_RING_SIZE == sc->txq_nactive + TXQ_HiLmt_OFF) {
- volatile struct GTeth_desc *txd2 = &sc->txq_desc[sc->txq_fi];
- unsigned cmdsts;
-
- cmdsts = txd2->ed_cmdsts;
- if (cmdsts & TX_CMD_O) { /* Ownership (1=GT 0=CPU) */
- int nextin;
-
- /*
- * Sometime the Discovery forgets to update the
- * last descriptor. See if CPU owned the descriptor
- * after it (since we know we've turned that to
- * the discovery and if CPU owned it, the Discovery
- * gave it back). If CPU does, we know the Discovery
- * gave back this one but forgot to mark it back to CPU.
- */
- nextin = (sc->txq_fi + 1) % TX_RING_SIZE;
- if (sc->txq_desc[nextin].ed_cmdsts & TX_CMD_O) {
-#if 0
- printk("Overconsuming Tx descriptors!\n");
-#endif
- return 1;
- }
- printk("Txq %d forgot\n", sc->txq_fi);
- }
- /* Txq ring is almost full, let's free the current buffer here */
-#if 0
- printk("Txq ring near full, free desc%d\n",sc->txq_fi);
-#endif
- GTeth_txq_free(sc, cmdsts);
- } /* end if ( TX_RING_SIZE == sc->txq_nactive + TXQ_HiLmt_OFF) */
- return 0;
-}
-#endif
-
-static int GT64260eth_sendpacket(struct GTeth_softc *sc,struct mbuf *m)
-{
- volatile struct GTeth_desc *txd = &sc->txq_desc[sc->txq_lo];
- unsigned intrmask = sc->sc_intrmask;
- unsigned loop=0, index= sc->txq_lo;
-
- /*
- * The end-of-list descriptor we put on last time is the starting point
- * for this packet. The GT is supposed to terminate list processing on
- * a NULL nxtptr but that currently is broken so a CPU-owned descriptor
- * must terminate the list.
- */
- intrmask = sc->sc_intrmask;
-
- if ( !(m->m_next)) {/* single buffer packet */
- sc->txq_mbuf[index]= m;
- sc->stats.txSinglMaxLen= MAX(m->m_len, sc->stats.txSinglMaxLen);
- }
- else /* multiple mbufs in this packet */
- {
- struct mbuf *mtp, *mdest;
- volatile unsigned char *pt;
- int len, y;
-
-#ifdef GT_DEBUG
- printk("multi mbufs ");
-#endif
- MGETHDR(mdest, M_WAIT, MT_DATA);
- MCLGET(mdest, M_WAIT);
- pt = (volatile unsigned char *)mdest->m_data;
- for (mtp=m,len=0;mtp;mtp=mtp->m_next) {
- loop++;
- if ( (y=(len+mtp->m_len)) > sizeof(union mcluster)) {
- /* GT64260 allows us to chain the remaining to the next
- * free descriptors.
- */
- printk("packet size %x > mcluster %x\n", y,sizeof(union mcluster));
- printk("GT64260eth : packet too large ");
- }
- memcpy((void *)pt,(char *)mtp->m_data, mtp->m_len);
- pt += mtp->m_len;
-#if 0
- printk("%d ",mtp->m_len);
-#endif
- len += mtp->m_len;
- sc->stats.txBuffMaxLen=MAX(mtp->m_len,sc->stats.txBuffMaxLen);
- }
- sc->stats.txMultiMaxLoop=MAX(loop, sc->stats.txMultiMaxLoop);
-#if 0
- printk("\n");
-#endif
- mdest->m_len=len;
- /* free old mbuf chain */
- m_freem(m);
- sc->txq_mbuf[index] = m = mdest;
- sc->stats.txMultiBuffPacket++;
- sc->stats.txMultiMaxLen= MAX(m->m_len, sc->stats.txMultiMaxLen);
- }
- if (m->m_len < ET_MINLEN) m->m_len = ET_MINLEN;
-
- txd->ed_bufptr = (unsigned) mtod(m, void*);
- txd->ed_lencnt = m->m_len << 16;
- /*txd->ed_cmdsts = TX_CMD_L|TX_CMD_GC|TX_CMD_P|TX_CMD_O|TX_CMD_F|TX_CMD_EI;*/
- txd->ed_cmdsts = 0x80c70000;
- while (txd->ed_cmdsts != 0x80c70000);
- memBar();
-
-#ifdef GT_DEBUG
- printk("len = %d, cmdsts 0x%x ", m->m_len,txd->ed_cmdsts);
-#endif
-
- /*
- * Tell the SDMA engine to "Fetch!"
- * Start Tx high.
- */
- sc->txq_nactive++;
- outl(0x800080, ETH0_ESDCMR); /* ETH_ESDCMR_TXDH| ETH_ESDCMR_ERD */
- if ( ++sc->txq_lo == TX_RING_SIZE) sc->txq_lo = 0;
- sc->txq_free--;
-
-#if 0
- /*
- * Since we have put an item into the packet queue, we now want
- * an interrupt when the transmit queue finishes processing the
- * list. But only update the mask if needs changing.
- */
- intrmask |= sc->txq_intrbits & ( ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh);
- if (sc->sc_intrmask != intrmask) {
- sc->sc_intrmask = intrmask;
- outl(sc->sc_intrmask, ETH0_EIMR);
- }
-#endif
-
-#if 0
- printk("EICR= %x, EIMR= %x ", inl(ETH0_EICR), inl(ETH0_EIMR));
- printk("%s:transmit frame #%d queued in slot %d.\n",
- sc->arpcom.ac_if.if_name, sc->txq_lo, index);
- printk("pcr %x, pcxr %x DMA dcr %x cmr %x\n", inl(ETH0_EPCR), inl(ETH0_EPCXR), inl(ETH0_ESDCR), inl(ETH0_ESDCMR));
-#endif
-
- return 1;
-}
-
-static unsigned GTeth_txq_done(struct GTeth_softc *sc)
-{
- if (GTeth_debug>0) printk("Txdone(" );
-
- while (sc->txq_nactive > 0) {
- /* next to be returned to the CPU */
- volatile struct GTeth_desc *txd = &sc->txq_desc[sc->txq_fi];
- unsigned cmdsts;
-
- /* if GT64260 still owns it ....... */
- if ((cmdsts = txd->ed_cmdsts) & TX_CMD_O) {
- int nextin;
-
- /* Someone quoted :
- * "Sometimes the Discovery forgets to update the
- * ownership bit in the descriptor."
- * <skf> More correctly, the last descriptor of each
- * transmitted frame is returned to CPU ownership and
- * status is updated only after the actual transmission
- * of the packet is completed. Also, if there is an error
- * during transmission, we want to continue the
- * transmission of the next descriptor, in additions to
- * reporting the error.
- */
- /* The last descriptor */
- if (sc->txq_nactive == 1) return(0);
-
- /*
- * Sometimes the Discovery forgets to update the
- * ownership bit in the descriptor. See if CPU owned
- * the descriptor after it (since we know we've turned
- * that to the Discovery and if CPU owned it now then the
- * Discovery gave it back). If we do, we know the
- * Discovery gave back this one but forgot to mark it
- * back to CPU.
- */
- nextin = (sc->txq_fi + 1) % TX_RING_SIZE;
-
- if (sc->txq_desc[nextin].ed_cmdsts & TX_CMD_O) return(0);
- printk("Txq%d forgot\n",sc->txq_fi);
- } /* end checking GT64260eth owner */
- GTeth_txq_free(sc, cmdsts);
- } /* end while */
- if (GTeth_debug>0) printk(")\n");
- return(1);
-}
-
-static void GTeth_tx_start(struct GTeth_softc *sc)
-{
- int i;
- volatile struct GTeth_desc *txd;
- unsigned nxtaddr;
-
-#ifdef GT_DEBUG
- printk("GTeth_tx_start(");
-#endif
- sc->sc_intrmask &= ~(ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh|
- ETH_IR_TxEndLow |ETH_IR_TxBufferLow);
-
- txd = &sc->txq_desc[0];
- sc->txq_desc_busaddr = (unsigned long) &sc->txq_desc[0];
-#ifdef GT_DEBUG
- printk("txq_desc_busaddr %x, &sc->txq_desc[0] %x \n",
- sc->txq_desc_busaddr,&sc->txq_desc[0]);
-#endif
-
- nxtaddr = sc->txq_desc_busaddr + sizeof(*txd);
-
- sc->txq_pendq.ifq_maxlen = 10;
- sc->txq_pendq.ifq_head= NULL;
- sc->txq_pendq.ifq_tail= NULL;
- sc->txq_nactive = 0;
- sc->txq_fi = 0;
- sc->txq_lo = 0;
- sc->txq_inptr = PKT_BUF_SZ;
- sc->txq_outptr = 0;
- sc->txq_free = TX_RING_SIZE;
-
- for (i = 0; i < TX_RING_SIZE;
- i++, txd++, nxtaddr += sizeof(*txd)) {
- sc->txq_mbuf[i]=0;
- txd->ed_bufptr = 0;
-
- /*
- * update the nxtptr to point to the next txd.
- */
- txd->ed_cmdsts = 0;
- if ( i== TX_RING_SIZE-1) nxtaddr = sc->txq_desc_busaddr;
- txd->ed_nxtptr = nxtaddr;
-#ifdef GT_DEBUG
- printk("next desc. @ 0x%x\n",txd->ed_nxtptr);
-#endif
- }
-
- sc->txq_intrbits = ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh;
- sc->txq_esdcmrbits = ETH_ESDCMR_TXDH; /* Start Tx high */
- sc->txq_epsrbits = ETH_EPSR_TxHigh;
- /* offset to current tx desc ptr reg */
- sc->txq_ectdp = (caddr_t)ETH0_ECTDP1;
- /* Current Tx Desc Pointer 1 */
- outl(sc->txq_desc_busaddr,ETH0_ECTDP1);
-
-#ifdef GT_DEBUG
- printk(")\n");
-#endif
-}
-
-static void GTeth_tx_cleanup(struct GTeth_softc *sc)
-{
- int i;
-
- for (i=0; i< TX_RING_SIZE; i++) {
- if (sc->txq_mbuf[i]) {
- m_freem(sc->txq_mbuf[i]);
- sc->txq_mbuf[i]=0;
- }
- }
-}
-
-static void GTeth_tx_stop(struct GTeth_softc *sc)
-{
- /* SDMA command register : stop Tx high and low */
- outl(ETH_ESDCMR_STDH|ETH_ESDCMR_STDL, ETH0_ESDCMR);
-
- GTeth_txq_done(sc);
- sc->sc_intrmask &= ~(ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh|
- ETH_IR_TxEndLow |ETH_IR_TxBufferLow);
- GTeth_tx_cleanup(sc);
-
- sc->arpcom.ac_if.if_timer = 0;
-}
-
-static void GTeth_ifchange(struct GTeth_softc *sc)
-{
- if (GTeth_debug>0) printk("GTeth_ifchange(");
- if (GTeth_debug>5) printk("(pcr=%#x,imr=%#x)",inl(ETH0_EPCR),inl(ETH0_EIMR));
- /* printk("SIOCADDMULTI (SIOCDELMULTI): is it about rx or tx ?\n");*/
- outl(sc->sc_pcr | ETH_EPCR_EN, ETH0_EPCR);
- outl(sc->sc_intrmask, ETH0_EIMR);
- GTeth_ifstart(&sc->arpcom.ac_if);
- /* Current Tx Desc Pointer 0 and 1 */
- if (GTeth_debug>5) printk("(ectdp0=%#x, ectdp1=%#x)",
- inl(ETH0_ECTDP0), inl(ETH0_ECTDP1));
- if (GTeth_debug>0) printk(")");
-}
-
-static int GTeth_hash_compute(struct GTeth_softc *sc,unsigned char eaddr[ETHER_ADDR_LEN])
-{
- unsigned w0, add0, add1;
- unsigned result;
-
- if (GTeth_debug>0) printk("GTeth_hash_compute(");
- add0 = ((unsigned) eaddr[5] << 0) |
- ((unsigned) eaddr[4] << 8) |
- ((unsigned) eaddr[3] << 16);
-
- add0 = ((add0 & 0x00f0f0f0) >> 4) | ((add0 & 0x000f0f0f) << 4);
- add0 = ((add0 & 0x00cccccc) >> 2) | ((add0 & 0x00333333) << 2);
- add0 = ((add0 & 0x00aaaaaa) >> 1) | ((add0 & 0x00555555) << 1);
-
- add1 = ((unsigned) eaddr[2] << 0) |
- ((unsigned) eaddr[1] << 8) |
- ((unsigned) eaddr[0] << 16);
-
- add1 = ((add1 & 0x00f0f0f0) >> 4) | ((add1 & 0x000f0f0f) << 4);
- add1 = ((add1 & 0x00cccccc) >> 2) | ((add1 & 0x00333333) << 2);
- add1 = ((add1 & 0x00aaaaaa) >> 1) | ((add1 & 0x00555555) << 1);
-
-#ifdef GT_DEBUG
- printk("eaddr= %s add1:%x add0:%x\n", ether_sprintf1(eaddr), add1, add0);
-#endif
-
- /*
- * hashResult is the 15 bits Hash entry address.
- * ethernetADD is a 48 bit number, which is derived from the Ethernet
- * MAC address, by nibble swapping in every byte (i.e MAC address
- * of 0x123456789abc translates to ethernetADD of 0x21436587a9cb).
- */
- if ((sc->sc_pcr & ETH_EPCR_HM) == 0) {
- /*
- * hashResult[14:0] = hashFunc0(ethernetADD[47:0])
- *
- * hashFunc0 calculates the hashResult in the following manner:
- * hashResult[ 8:0] = ethernetADD[14:8,1,0]
- * XOR ethernetADD[23:15] XOR ethernetADD[32:24]
- */
- result = (add0 & 3) | ((add0 >> 6) & ~3);
- result ^= (add0 >> 15) ^ (add1 >> 0);
- result &= 0x1ff;
- /*
- * hashResult[14:9] = ethernetADD[7:2]
- */
- result |= (add0 & ~3) << 7; /* excess bits will be masked */
-#ifdef GT_DEBUG
- printk("hash result %x ", result & 0x7fff);
-#endif
- } else {
-#define TRIBITFLIP 073516240 /* yes its in octal */
- /*
- * hashResult[14:0] = hashFunc1(ethernetADD[47:0])
- *
- * hashFunc1 calculates the hashResult in the following manner:
- * hashResult[08:00] = ethernetADD[06:14]
- * XOR ethernetADD[15:23] XOR ethernetADD[24:32]
- */
- w0 = ((add0 >> 6) ^ (add0 >> 15) ^ (add1)) & 0x1ff;
- /*
- * Now bitswap those 9 bits
- */
- result = 0;
- result |= ((TRIBITFLIP >> (((w0 >> 0) & 7) * 3)) & 7) << 6;
- result |= ((TRIBITFLIP >> (((w0 >> 3) & 7) * 3)) & 7) << 3;
- result |= ((TRIBITFLIP >> (((w0 >> 6) & 7) * 3)) & 7) << 0;
-
- /*
- * hashResult[14:09] = ethernetADD[00:05]
- */
- result |= ((TRIBITFLIP >> (((add0 >> 0) & 7) * 3)) & 7) << 12;
- result |= ((TRIBITFLIP >> (((add0 >> 3) & 7) * 3)) & 7) << 9;
-#ifdef GT_DEBUG
- printk("1(%#x)", result);
-#endif
- }
-#ifdef GT_DEBUG
- printk(")");
-#endif
-
- /* 1/2K address filtering (MOTLoad default )? ->16KB memory required
- * or 8k address filtering ? -> 256KB memory required
- */
- return result & ((sc->sc_pcr & ETH_EPCR_HS_512) ? 0x7ff : 0x7fff);
-}
-
-static int GTeth_hash_entry_op(struct GTeth_softc *sc, enum GTeth_hash_op op,
- enum GTeth_rxprio prio,unsigned char eaddr[ETHER_ADDR_LEN])
-{
- unsigned long long he;
- unsigned long long *maybe_he_p = NULL;
- int limit;
- int hash;
- int maybe_hash = 0;
-
-#ifdef GT_DEBUG
- printk("GTeth_hash_entry_op(prio %d ", prio);
-#endif
-
- hash = GTeth_hash_compute(sc, eaddr);
-
- if (sc->sc_hashtable == NULL) {
- printk("hashtable == NULL!");
- }
-#ifdef GT_DEBUG
- printk("Hash computed %x eaddr %s\n", hash,ether_sprintf1(eaddr));
-#endif
-
- /*
- * Assume we are going to insert so create the hash entry we
- * are going to insert. We also use it to match entries we
- * will be removing. The datasheet is wrong for this.
- */
- he = (((unsigned long long) eaddr[5]) << 43) |
- (((unsigned long long) eaddr[4]) << 35) |
- (((unsigned long long) eaddr[3]) << 27) |
- (((unsigned long long) eaddr[2]) << 19) |
- (((unsigned long long) eaddr[1]) << 11) |
- (((unsigned long long) eaddr[0]) << 3) |
- ((unsigned long long) HSH_PRIO_INS(prio) | HSH_V | HSH_R);
- /* he = 0x1b1acd87d08005;*/
- /*
- * The GT will search upto 12 entries for a hit, so we must mimic that.
- */
- hash &= (sc->sc_hashmask / sizeof(he));
-
-#ifdef GT_DEBUG
- if (GTeth_debug>0) {
- unsigned val1, val2;
-
- val1= he & 0xffffffff;
- val2= (he >>32) & 0xffffffff;
- printk("Hash addr value %x%x, entry %x\n",val2,val1, hash);
- }
-#endif
-
- for (limit = HSH_LIMIT; limit > 0 ; --limit) {
- /*
- * Does the GT wrap at the end, stop at the, or overrun the
- * end? Assume it wraps for now. Stash a copy of the
- * current hash entry.
- */
- unsigned long long *he_p = &sc->sc_hashtable[hash];
- unsigned long long thishe = *he_p;
-
- /*
- * If the hash entry isn't valid, that break the chain. And
- * this entry a good candidate for reuse.
- */
- if ((thishe & HSH_V) == 0) {
- maybe_he_p = he_p;
- break;
- }
-
- /*
- * If the hash entry has the same address we are looking for
- * then ... if we are removing and the skip bit is set, its
- * already been removed. if are adding and the skip bit is
- * clear, then its already added. In either return EBUSY
- * indicating the op has already been done. Otherwise flip
- * the skip bit and return 0.
- */
- if (((he ^ thishe) & HSH_ADDR_MASK) == 0) {
- if (((op == GE_HASH_REMOVE) && (thishe & HSH_S)) ||
- ((op == GE_HASH_ADD) && (thishe & HSH_S) == 0))
- return EBUSY;
- *he_p = thishe ^ HSH_S;
-
- if (GTeth_debug>0) {
- unsigned val1, val2;
-
- val1= *he_p & 0xffffffff;
- val2= (*he_p >>32) & 0xffffffff;
- printk("flip skip bit result %x%x entry %x ",val2,val1, hash);
- }
- return 0;
- }
-
- /*
- * If we haven't found a slot for the entry and this entry
- * is currently being skipped, return this entry.
- */
- if (maybe_he_p == NULL && (thishe & HSH_S)) {
- maybe_he_p = he_p;
- maybe_hash = hash;
- }
- hash = (hash + 1) & (sc->sc_hashmask / sizeof(he));
- }
-
- /*
- * If we got here, then there was no entry to remove.
- */
- if (op == GE_HASH_REMOVE) {
- printk("GT64260eth : No entry to remove\n");
- return ENOENT;
- }
-
- /*
- * If we couldn't find a slot, return an error.
- */
- if (maybe_he_p == NULL) {
- printk("GT64260eth : No slot found");
- return ENOSPC;
- }
-
- /* Update the entry.*/
- *maybe_he_p = he;
- if (GTeth_debug>0) {
- unsigned val1, val2;
-#if 0
- unsigned long *pt= sc->sc_hashtable;
- int i, loop;
-
- for (loop= 0; loop< 256; loop++) {
- printk("%d)", loop);
- for (i=0; i< 16; i++, pt++) printk("%x ",*pt);
- printk("\n");
- }
-#endif
- val1= he & 0xffffffff;
- val2= (he >>32) & 0xffffffff;
- printk("Update Hash result %x%x, table addr %x entry %x )\n",val2, val1, maybe_he_p, hash);
- }
- return 0;
-}
-
-static int GTeth_hash_fill(struct GTeth_softc *sc)
-{
- struct ether_multistep step;
- struct ether_multi *enm;
- int error;
-
-#ifdef GT_DEBUG
- printk( "GTeth_hash_fill(");
-#endif
- error = GTeth_hash_entry_op(sc,GE_HASH_ADD,GE_RXPRIO_HI,sc->arpcom.ac_enaddr);
-
- if (error) {
- if (GTeth_debug>0) printk("!");
- return error;
- }
-
- sc->sc_flags &= ~GE_ALLMULTI;
- if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) == 0)
- sc->sc_pcr &= ~ETH_EPCR_PM;
- /* see lib/include/netinet/if_ether.h */
- ETHER_FIRST_MULTI(step, &sc->arpcom, enm);
- while (enm != NULL) {
- if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) {
- /* Frames are received regardless of their destinatin address */
- sc->sc_flags |= GE_ALLMULTI;
- sc->sc_pcr |= ETH_EPCR_PM;
- } else {
- /* Frames are only received if the destinatin address is found
- * in the hash table
- */
- error = GTeth_hash_entry_op(sc, GE_HASH_ADD,
- GE_RXPRIO_MEDLO, enm->enm_addrlo);
- if (error == ENOSPC) break;
- }
- ETHER_NEXT_MULTI(step, enm);
- }
-#ifdef GT_DEBUG
- printk(")\n");
-#endif
- return error;
-}
-
-static void GTeth_hash_init(struct GTeth_softc *sc)
-{
- void *hash_mem;
-
- if (GTeth_debug>0) printk("GTeth_hash_init(");
- /* MOTLoad defualt : 512 bytes of address filtering, which
- * requires 16KB of memory
- */
-#if 1
- hash_mem = rtems_bsdnet_malloc(HASH_DRAM_SIZE + HASH_ALIGN, M_FREE, M_NOWAIT);
- sc->sc_hashtable =(void *)(((long)hash_mem+ HASH_ALIGN) & ~HASH_ALIGN);
-#else
- /* only for test */
- hash_mem = 0x68F000;
- sc->sc_hashtable =(unsigned long long *)hash_mem;
-#endif
- sc->sc_hashmask = HASH_DRAM_SIZE - 1;
-
- memset((void *)sc->sc_hashtable, 0,HASH_DRAM_SIZE);
-#ifdef GT_DEBUG
- printk("hashtable addr:%x, mask %x)\n", sc->sc_hashtable,sc->sc_hashmask);
-#endif
-}
-
-#ifdef GT64260eth_DEBUG
-static void GT64260eth_error(struct GTeth_softc *sc)
-{
- struct ifnet *ifp = &sc->arpcom.ac_if;
- unsigned int intr_status= sc->intr_errsts[sc->intr_err_ptr1];
-
- /* read and reset the status; because this is written
- * by the ISR, we must disable interrupts here
- */
- if (intr_status) {
- printk("%s%d: ICR = 0x%x ",
- ifp->if_name, ifp->if_unit, intr_status);
-#if 1
- if (intr_status & INTR_RX_ERROR) {
- printk("Rxq error, if_ierrors %d\n",
- ifp->if_ierrors);
- }
-#endif
- /* Rx error is handled in GT64260eth_rx() */
- if (intr_status & INTR_TX_ERROR) {
- ifp->if_oerrors++;
- printk("Txq error, if_oerrors %d\n",ifp->if_oerrors);
- }
- }
- else
- printk("%s%d: Ghost interrupt ?\n",ifp->if_name,
- ifp->if_unit);
- sc->intr_errsts[sc->intr_err_ptr1++]=0;
- sc->intr_err_ptr1 %= INTR_ERR_SIZE; /* Till Straumann */
-}
-#endif
-
-/* The daemon does all of the work; RX, TX and cleaning up buffers/descriptors */
-static void GT64260eth_daemon(void *arg)
-{
- struct GTeth_softc *sc = (struct GTeth_softc*)arg;
- rtems_event_set events;
- struct mbuf *m=0;
- struct ifnet *ifp=&sc->arpcom.ac_if;
-
-#if 0
- /* see comments in GT64260eth_init(); in newer versions of
- * rtems, we hold the network semaphore at this point
- */
- rtems_semaphore_release(sc->daemonSync);
-#endif
-
- /* NOTE: our creator possibly holds the bsdnet_semaphore.
- * since that has PRIORITY_INVERSION enabled, our
- * subsequent call to bsdnet_event_receive() will
- * _not_ release it. It's still in posession of our
- * owner.
- * This is different from how killing this task
- * is handled.
- */
-
- for (;;) {
- /* sleep until there's work to be done */
- /* Note: bsdnet_event_receive() acquires
- * the global bsdnet semaphore for
- * mutual exclusion.
- */
- rtems_bsdnet_event_receive(ALL_EVENTS,
- RTEMS_WAIT | RTEMS_EVENT_ANY,
- RTEMS_NO_TIMEOUT,
- &events);
-
- if (KILL_EVENT & events) break;
-
-#ifndef GE_NORX
- if (events & RX_EVENT) GT64260eth_rx(sc);
-#endif
-#if 0
- printk("%x ", inb(ETH0_EPSR));
- if ( ((i++) % 15)==0) printk("\n");
-#endif
-
- /* clean up and try sending packets */
- do {
- if (sc->txq_nactive) GTeth_txq_done(sc);
-
- while (sc->txq_free>0) {
- if (sc->txq_free>TXQ_HiLmt_OFF) {
- m=0;
- IF_DEQUEUE(&ifp->if_snd,m);
- if (m==0) break;
- GT64260eth_sendpacket(sc, m);
- }
- else {
- GTeth_txq_done(sc);
- break;
- }
- }
- /* we leave this loop
- * - either because there's no free buffer
- * (m=0 initializer && !sc->txq_free)
- * - or there's nothing to send (IF_DEQUEUE
- * returned 0
- */
- } while (m);
-
- ifp->if_flags &= ~IFF_OACTIVE;
-
- /* Log errors and other uncommon events. */
-#ifdef GT64260eth_DEBUG
- if (events & ERR_EVENT) GT64260eth_error(sc);
-#endif
- } /* end for(;;) { rtems_bsdnet_event_receive() .....*/
-
- ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
-
- /* shut down the hardware */
- GT64260eth_stop_hw(sc);
- /* flush the output queue */
- for (;;) {
- IF_DEQUEUE(&ifp->if_snd,m);
- if (!m) break;
- m_freem(m);
- }
- /* as of 'rtems_bsdnet_event_receive()' we own the
- * networking semaphore
- */
- rtems_bsdnet_semaphore_release();
- rtems_semaphore_release(sc->daemonSync);
-
- /* Note that I dont use sc->daemonTid here -
- * theoretically, that variable could already
- * hold a newly created TID
- */
- rtems_task_exit();
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 05:55:23 +0000