aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/sonic.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/sonic.c')
-rw-r--r--drivers/net/sonic.c616
1 files changed, 0 insertions, 616 deletions
diff --git a/drivers/net/sonic.c b/drivers/net/sonic.c
deleted file mode 100644
index cdc9cc873e0..00000000000
--- a/drivers/net/sonic.c
+++ /dev/null
@@ -1,616 +0,0 @@
-/*
- * sonic.c
- *
- * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * This driver is based on work from Andreas Busse, but most of
- * the code is rewritten.
- *
- * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
- *
- * Core code included by system sonic drivers
- */
-
-/*
- * Sources: Olivetti M700-10 Risc Personal Computer hardware handbook,
- * National Semiconductors data sheet for the DP83932B Sonic Ethernet
- * controller, and the files "8390.c" and "skeleton.c" in this directory.
- */
-
-
-
-/*
- * Open/initialize the SONIC controller.
- *
- * This routine should set everything up anew at each open, even
- * registers that "should" only need to be set once at boot, so that
- * there is non-reboot way to recover if something goes wrong.
- */
-static int sonic_open(struct net_device *dev)
-{
- if (sonic_debug > 2)
- printk("sonic_open: initializing sonic driver.\n");
-
- /*
- * We don't need to deal with auto-irq stuff since we
- * hardwire the sonic interrupt.
- */
-/*
- * XXX Horrible work around: We install sonic_interrupt as fast interrupt.
- * This means that during execution of the handler interrupt are disabled
- * covering another bug otherwise corrupting data. This doesn't mean
- * this glue works ok under all situations.
- */
-// if (sonic_request_irq(dev->irq, &sonic_interrupt, 0, "sonic", dev)) {
- if (sonic_request_irq(dev->irq, &sonic_interrupt, SA_INTERRUPT,
- "sonic", dev)) {
- printk("\n%s: unable to get IRQ %d .\n", dev->name, dev->irq);
- return -EAGAIN;
- }
-
- /*
- * Initialize the SONIC
- */
- sonic_init(dev);
-
- netif_start_queue(dev);
-
- if (sonic_debug > 2)
- printk("sonic_open: Initialization done.\n");
-
- return 0;
-}
-
-
-/*
- * Close the SONIC device
- */
-static int sonic_close(struct net_device *dev)
-{
- unsigned int base_addr = dev->base_addr;
-
- if (sonic_debug > 2)
- printk("sonic_close\n");
-
- netif_stop_queue(dev);
-
- /*
- * stop the SONIC, disable interrupts
- */
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
-
- sonic_free_irq(dev->irq, dev); /* release the IRQ */
-
- return 0;
-}
-
-static void sonic_tx_timeout(struct net_device *dev)
-{
- struct sonic_local *lp = (struct sonic_local *) dev->priv;
- printk("%s: transmit timed out.\n", dev->name);
-
- /* Try to restart the adaptor. */
- sonic_init(dev);
- lp->stats.tx_errors++;
- dev->trans_start = jiffies;
- netif_wake_queue(dev);
-}
-
-/*
- * transmit packet
- */
-static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct sonic_local *lp = (struct sonic_local *) dev->priv;
- unsigned int base_addr = dev->base_addr;
- unsigned int laddr;
- int entry, length;
-
- netif_stop_queue(dev);
-
- if (sonic_debug > 2)
- printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev);
-
- /*
- * Map the packet data into the logical DMA address space
- */
- if ((laddr = vdma_alloc(CPHYSADDR(skb->data), skb->len)) == ~0UL) {
- printk("%s: no VDMA entry for transmit available.\n",
- dev->name);
- dev_kfree_skb(skb);
- netif_start_queue(dev);
- return 1;
- }
- entry = lp->cur_tx & SONIC_TDS_MASK;
- lp->tx_laddr[entry] = laddr;
- lp->tx_skb[entry] = skb;
-
- length = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len;
- flush_cache_all();
-
- /*
- * Setup the transmit descriptor and issue the transmit command.
- */
- lp->tda[entry].tx_status = 0; /* clear status */
- lp->tda[entry].tx_frag_count = 1; /* single fragment */
- lp->tda[entry].tx_pktsize = length; /* length of packet */
- lp->tda[entry].tx_frag_ptr_l = laddr & 0xffff;
- lp->tda[entry].tx_frag_ptr_h = laddr >> 16;
- lp->tda[entry].tx_frag_size = length;
- lp->cur_tx++;
- lp->stats.tx_bytes += length;
-
- if (sonic_debug > 2)
- printk("sonic_send_packet: issueing Tx command\n");
-
- SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
-
- dev->trans_start = jiffies;
-
- if (lp->cur_tx < lp->dirty_tx + SONIC_NUM_TDS)
- netif_start_queue(dev);
- else
- lp->tx_full = 1;
-
- return 0;
-}
-
-/*
- * The typical workload of the driver:
- * Handle the network interface interrupts.
- */
-static irqreturn_t sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- unsigned int base_addr = dev->base_addr;
- struct sonic_local *lp;
- int status;
-
- if (dev == NULL) {
- printk("sonic_interrupt: irq %d for unknown device.\n", irq);
- return IRQ_NONE;
- }
-
- lp = (struct sonic_local *) dev->priv;
-
- status = SONIC_READ(SONIC_ISR);
- SONIC_WRITE(SONIC_ISR, 0x7fff); /* clear all bits */
-
- if (sonic_debug > 2)
- printk("sonic_interrupt: ISR=%x\n", status);
-
- if (status & SONIC_INT_PKTRX) {
- sonic_rx(dev); /* got packet(s) */
- }
-
- if (status & SONIC_INT_TXDN) {
- int dirty_tx = lp->dirty_tx;
-
- while (dirty_tx < lp->cur_tx) {
- int entry = dirty_tx & SONIC_TDS_MASK;
- int status = lp->tda[entry].tx_status;
-
- if (sonic_debug > 3)
- printk
- ("sonic_interrupt: status %d, cur_tx %d, dirty_tx %d\n",
- status, lp->cur_tx, lp->dirty_tx);
-
- if (status == 0) {
- /* It still hasn't been Txed, kick the sonic again */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
- break;
- }
-
- /* put back EOL and free descriptor */
- lp->tda[entry].tx_frag_count = 0;
- lp->tda[entry].tx_status = 0;
-
- if (status & 0x0001)
- lp->stats.tx_packets++;
- else {
- lp->stats.tx_errors++;
- if (status & 0x0642)
- lp->stats.tx_aborted_errors++;
- if (status & 0x0180)
- lp->stats.tx_carrier_errors++;
- if (status & 0x0020)
- lp->stats.tx_window_errors++;
- if (status & 0x0004)
- lp->stats.tx_fifo_errors++;
- }
-
- /* We must free the original skb */
- if (lp->tx_skb[entry]) {
- dev_kfree_skb_irq(lp->tx_skb[entry]);
- lp->tx_skb[entry] = 0;
- }
- /* and the VDMA address */
- vdma_free(lp->tx_laddr[entry]);
- dirty_tx++;
- }
-
- if (lp->tx_full
- && dirty_tx + SONIC_NUM_TDS > lp->cur_tx + 2) {
- /* The ring is no longer full, clear tbusy. */
- lp->tx_full = 0;
- netif_wake_queue(dev);
- }
-
- lp->dirty_tx = dirty_tx;
- }
-
- /*
- * check error conditions
- */
- if (status & SONIC_INT_RFO) {
- printk("%s: receive fifo underrun\n", dev->name);
- lp->stats.rx_fifo_errors++;
- }
- if (status & SONIC_INT_RDE) {
- printk("%s: receive descriptors exhausted\n", dev->name);
- lp->stats.rx_dropped++;
- }
- if (status & SONIC_INT_RBE) {
- printk("%s: receive buffer exhausted\n", dev->name);
- lp->stats.rx_dropped++;
- }
- if (status & SONIC_INT_RBAE) {
- printk("%s: receive buffer area exhausted\n", dev->name);
- lp->stats.rx_dropped++;
- }
-
- /* counter overruns; all counters are 16bit wide */
- if (status & SONIC_INT_FAE)
- lp->stats.rx_frame_errors += 65536;
- if (status & SONIC_INT_CRC)
- lp->stats.rx_crc_errors += 65536;
- if (status & SONIC_INT_MP)
- lp->stats.rx_missed_errors += 65536;
-
- /* transmit error */
- if (status & SONIC_INT_TXER)
- lp->stats.tx_errors++;
-
- /*
- * clear interrupt bits and return
- */
- SONIC_WRITE(SONIC_ISR, status);
- return IRQ_HANDLED;
-}
-
-/*
- * We have a good packet(s), get it/them out of the buffers.
- */
-static void sonic_rx(struct net_device *dev)
-{
- unsigned int base_addr = dev->base_addr;
- struct sonic_local *lp = (struct sonic_local *) dev->priv;
- sonic_rd_t *rd = &lp->rda[lp->cur_rx & SONIC_RDS_MASK];
- int status;
-
- while (rd->in_use == 0) {
- struct sk_buff *skb;
- int pkt_len;
- unsigned char *pkt_ptr;
-
- status = rd->rx_status;
- if (sonic_debug > 3)
- printk("status %x, cur_rx %d, cur_rra %x\n",
- status, lp->cur_rx, lp->cur_rra);
- if (status & SONIC_RCR_PRX) {
- pkt_len = rd->rx_pktlen;
- pkt_ptr =
- (char *)
- sonic_chiptomem((rd->rx_pktptr_h << 16) +
- rd->rx_pktptr_l);
-
- if (sonic_debug > 3)
- printk
- ("pktptr %p (rba %p) h:%x l:%x, bsize h:%x l:%x\n",
- pkt_ptr, lp->rba, rd->rx_pktptr_h,
- rd->rx_pktptr_l,
- SONIC_READ(SONIC_RBWC1),
- SONIC_READ(SONIC_RBWC0));
-
- /* Malloc up new buffer. */
- skb = dev_alloc_skb(pkt_len + 2);
- if (skb == NULL) {
- printk
- ("%s: Memory squeeze, dropping packet.\n",
- dev->name);
- lp->stats.rx_dropped++;
- break;
- }
- skb->dev = dev;
- skb_reserve(skb, 2); /* 16 byte align */
- skb_put(skb, pkt_len); /* Make room */
- eth_copy_and_sum(skb, pkt_ptr, pkt_len, 0);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb); /* pass the packet to upper layers */
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += pkt_len;
-
- } else {
- /* This should only happen, if we enable accepting broken packets. */
- lp->stats.rx_errors++;
- if (status & SONIC_RCR_FAER)
- lp->stats.rx_frame_errors++;
- if (status & SONIC_RCR_CRCR)
- lp->stats.rx_crc_errors++;
- }
-
- rd->in_use = 1;
- rd = &lp->rda[(++lp->cur_rx) & SONIC_RDS_MASK];
- /* now give back the buffer to the receive buffer area */
- if (status & SONIC_RCR_LPKT) {
- /*
- * this was the last packet out of the current receice buffer
- * give the buffer back to the SONIC
- */
- lp->cur_rra += sizeof(sonic_rr_t);
- if (lp->cur_rra >
- (lp->rra_laddr +
- (SONIC_NUM_RRS -
- 1) * sizeof(sonic_rr_t))) lp->cur_rra =
- lp->rra_laddr;
- SONIC_WRITE(SONIC_RWP, lp->cur_rra & 0xffff);
- } else
- printk
- ("%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",
- dev->name);
- }
- /*
- * If any worth-while packets have been received, dev_rint()
- * has done a mark_bh(NET_BH) for us and will work on them
- * when we get to the bottom-half routine.
- */
-}
-
-
-/*
- * Get the current statistics.
- * This may be called with the device open or closed.
- */
-static struct net_device_stats *sonic_get_stats(struct net_device *dev)
-{
- struct sonic_local *lp = (struct sonic_local *) dev->priv;
- unsigned int base_addr = dev->base_addr;
-
- /* read the tally counter from the SONIC and reset them */
- lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT);
- SONIC_WRITE(SONIC_CRCT, 0xffff);
- lp->stats.rx_frame_errors += SONIC_READ(SONIC_FAET);
- SONIC_WRITE(SONIC_FAET, 0xffff);
- lp->stats.rx_missed_errors += SONIC_READ(SONIC_MPT);
- SONIC_WRITE(SONIC_MPT, 0xffff);
-
- return &lp->stats;
-}
-
-
-/*
- * Set or clear the multicast filter for this adaptor.
- */
-static void sonic_multicast_list(struct net_device *dev)
-{
- struct sonic_local *lp = (struct sonic_local *) dev->priv;
- unsigned int base_addr = dev->base_addr;
- unsigned int rcr;
- struct dev_mc_list *dmi = dev->mc_list;
- unsigned char *addr;
- int i;
-
- rcr = SONIC_READ(SONIC_RCR) & ~(SONIC_RCR_PRO | SONIC_RCR_AMC);
- rcr |= SONIC_RCR_BRD; /* accept broadcast packets */
-
- if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
- rcr |= SONIC_RCR_PRO;
- } else {
- if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15)) {
- rcr |= SONIC_RCR_AMC;
- } else {
- if (sonic_debug > 2)
- printk
- ("sonic_multicast_list: mc_count %d\n",
- dev->mc_count);
- lp->cda.cam_enable = 1; /* always enable our own address */
- for (i = 1; i <= dev->mc_count; i++) {
- addr = dmi->dmi_addr;
- dmi = dmi->next;
- lp->cda.cam_desc[i].cam_cap0 =
- addr[1] << 8 | addr[0];
- lp->cda.cam_desc[i].cam_cap1 =
- addr[3] << 8 | addr[2];
- lp->cda.cam_desc[i].cam_cap2 =
- addr[5] << 8 | addr[4];
- lp->cda.cam_enable |= (1 << i);
- }
- SONIC_WRITE(SONIC_CDC, 16);
- /* issue Load CAM command */
- SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
- }
- }
-
- if (sonic_debug > 2)
- printk("sonic_multicast_list: setting RCR=%x\n", rcr);
-
- SONIC_WRITE(SONIC_RCR, rcr);
-}
-
-
-/*
- * Initialize the SONIC ethernet controller.
- */
-static int sonic_init(struct net_device *dev)
-{
- unsigned int base_addr = dev->base_addr;
- unsigned int cmd;
- struct sonic_local *lp = (struct sonic_local *) dev->priv;
- unsigned int rra_start;
- unsigned int rra_end;
- int i;
-
- /*
- * put the Sonic into software-reset mode and
- * disable all interrupts
- */
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
-
- /*
- * clear software reset flag, disable receiver, clear and
- * enable interrupts, then completely initialize the SONIC
- */
- SONIC_WRITE(SONIC_CMD, 0);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS);
-
- /*
- * initialize the receive resource area
- */
- if (sonic_debug > 2)
- printk("sonic_init: initialize receive resource area\n");
-
- rra_start = lp->rra_laddr & 0xffff;
- rra_end =
- (rra_start + (SONIC_NUM_RRS * sizeof(sonic_rr_t))) & 0xffff;
-
- for (i = 0; i < SONIC_NUM_RRS; i++) {
- lp->rra[i].rx_bufadr_l =
- (lp->rba_laddr + i * SONIC_RBSIZE) & 0xffff;
- lp->rra[i].rx_bufadr_h =
- (lp->rba_laddr + i * SONIC_RBSIZE) >> 16;
- lp->rra[i].rx_bufsize_l = SONIC_RBSIZE >> 1;
- lp->rra[i].rx_bufsize_h = 0;
- }
-
- /* initialize all RRA registers */
- SONIC_WRITE(SONIC_RSA, rra_start);
- SONIC_WRITE(SONIC_REA, rra_end);
- SONIC_WRITE(SONIC_RRP, rra_start);
- SONIC_WRITE(SONIC_RWP, rra_end);
- SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16);
- SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE - 2) >> 1);
-
- lp->cur_rra =
- lp->rra_laddr + (SONIC_NUM_RRS - 1) * sizeof(sonic_rr_t);
-
- /* load the resource pointers */
- if (sonic_debug > 3)
- printk("sonic_init: issueing RRRA command\n");
-
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA);
- i = 0;
- while (i++ < 100) {
- if (SONIC_READ(SONIC_CMD) & SONIC_CR_RRRA)
- break;
- }
-
- if (sonic_debug > 2)
- printk("sonic_init: status=%x\n", SONIC_READ(SONIC_CMD));
-
- /*
- * Initialize the receive descriptors so that they
- * become a circular linked list, ie. let the last
- * descriptor point to the first again.
- */
- if (sonic_debug > 2)
- printk("sonic_init: initialize receive descriptors\n");
- for (i = 0; i < SONIC_NUM_RDS; i++) {
- lp->rda[i].rx_status = 0;
- lp->rda[i].rx_pktlen = 0;
- lp->rda[i].rx_pktptr_l = 0;
- lp->rda[i].rx_pktptr_h = 0;
- lp->rda[i].rx_seqno = 0;
- lp->rda[i].in_use = 1;
- lp->rda[i].link =
- lp->rda_laddr + (i + 1) * sizeof(sonic_rd_t);
- }
- /* fix last descriptor */
- lp->rda[SONIC_NUM_RDS - 1].link = lp->rda_laddr;
- lp->cur_rx = 0;
- SONIC_WRITE(SONIC_URDA, lp->rda_laddr >> 16);
- SONIC_WRITE(SONIC_CRDA, lp->rda_laddr & 0xffff);
-
- /*
- * initialize transmit descriptors
- */
- if (sonic_debug > 2)
- printk("sonic_init: initialize transmit descriptors\n");
- for (i = 0; i < SONIC_NUM_TDS; i++) {
- lp->tda[i].tx_status = 0;
- lp->tda[i].tx_config = 0;
- lp->tda[i].tx_pktsize = 0;
- lp->tda[i].tx_frag_count = 0;
- lp->tda[i].link =
- (lp->tda_laddr +
- (i + 1) * sizeof(sonic_td_t)) | SONIC_END_OF_LINKS;
- }
- lp->tda[SONIC_NUM_TDS - 1].link =
- (lp->tda_laddr & 0xffff) | SONIC_END_OF_LINKS;
-
- SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16);
- SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff);
- lp->cur_tx = lp->dirty_tx = 0;
-
- /*
- * put our own address to CAM desc[0]
- */
- lp->cda.cam_desc[0].cam_cap0 =
- dev->dev_addr[1] << 8 | dev->dev_addr[0];
- lp->cda.cam_desc[0].cam_cap1 =
- dev->dev_addr[3] << 8 | dev->dev_addr[2];
- lp->cda.cam_desc[0].cam_cap2 =
- dev->dev_addr[5] << 8 | dev->dev_addr[4];
- lp->cda.cam_enable = 1;
-
- for (i = 0; i < 16; i++)
- lp->cda.cam_desc[i].cam_entry_pointer = i;
-
- /*
- * initialize CAM registers
- */
- SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
- SONIC_WRITE(SONIC_CDC, 16);
-
- /*
- * load the CAM
- */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
-
- i = 0;
- while (i++ < 100) {
- if (SONIC_READ(SONIC_ISR) & SONIC_INT_LCD)
- break;
- }
- if (sonic_debug > 2) {
- printk("sonic_init: CMD=%x, ISR=%x\n",
- SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR));
- }
-
- /*
- * enable receiver, disable loopback
- * and enable all interrupts
- */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RXEN | SONIC_CR_STP);
- SONIC_WRITE(SONIC_RCR, SONIC_RCR_DEFAULT);
- SONIC_WRITE(SONIC_TCR, SONIC_TCR_DEFAULT);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_IMR, SONIC_IMR_DEFAULT);
-
- cmd = SONIC_READ(SONIC_CMD);
- if ((cmd & SONIC_CR_RXEN) == 0 || (cmd & SONIC_CR_STP) == 0)
- printk("sonic_init: failed, status=%x\n", cmd);
-
- if (sonic_debug > 2)
- printk("sonic_init: new status=%x\n",
- SONIC_READ(SONIC_CMD));
-
- return 0;
-}
-
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-12 13:41:37 +0000