diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-05-18 05:14:22 -0700 |
---|---|---|
committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-11 16:29:21 -0700 |
commit | d9fb9f384292d848ad9db386bcf97f1e06e60264 (patch) | |
tree | 128d65c7255f188ec7d4cea4fa637c700bcb5828 /drivers/net/sonic.c | |
parent | 8fb6b0908176704a3ea22005e8a9fa3ebf35b5be (diff) | |
download | linux-stable-d9fb9f384292d848ad9db386bcf97f1e06e60264.tar.gz linux-stable-d9fb9f384292d848ad9db386bcf97f1e06e60264.tar.bz2 linux-stable-d9fb9f384292d848ad9db386bcf97f1e06e60264.zip |
*sonic/natsemi/ns83829: Move the National Semi-conductor drivers
Move the National Semi-conductor drivers into drivers/net/ethernet/natsemi/
and make the necessary Kconfig and Makefile changes. Also moved the 8390
(National Semi-conductor) devices as a sub-menu of National Semi-conductor
devices.
- moved the ibmlana driver as well into this directory since it is a
"SONIC" driver
CC: Alfred Arnold <alfred.arnold@lancom.de>
CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
CC: Harald Welte <laforge@gnumonks.org>
CC: Tim Hockin <thockin@hockin.org>
CC: <linux-ns83820@kvack.org>
CC: Kevin Chea <kchea@yahoo.com>
CC: Marc Gauthier <marc@linux-xtensa.org>
CC: Chris Zankel <chris@zankel.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Marc Gauthier <marc@tensilica.com>
Diffstat (limited to 'drivers/net/sonic.c')
-rw-r--r-- | drivers/net/sonic.c | 742 |
1 files changed, 0 insertions, 742 deletions
diff --git a/drivers/net/sonic.c b/drivers/net/sonic.c deleted file mode 100644 index 26e25d7f5829..000000000000 --- a/drivers/net/sonic.c +++ /dev/null @@ -1,742 +0,0 @@ -/* - * sonic.c - * - * (C) 2005 Finn Thain - * - * Converted to DMA API, added zero-copy buffer handling, and - * (from the mac68k project) introduced dhd's support for 16-bit cards. - * - * (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 - * - * And... partially rewritten again by David Huggins-Daines in order - * to cope with screwed up Macintosh NICs that may or may not use - * 16-bit DMA. - * - * (C) 1999 David Huggins-Daines <dhd@debian.org> - * - */ - -/* - * 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. - * - * Additional sources: Nat Semi data sheet for the DP83932C and Nat Semi - * Application Note AN-746, the files "lance.c" and "ibmlana.c". See also - * the NetBSD file "sys/arch/mac68k/dev/if_sn.c". - */ - - - -/* - * 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) -{ - struct sonic_local *lp = netdev_priv(dev); - int i; - - if (sonic_debug > 2) - printk("sonic_open: initializing sonic driver.\n"); - - for (i = 0; i < SONIC_NUM_RRS; i++) { - struct sk_buff *skb = dev_alloc_skb(SONIC_RBSIZE + 2); - if (skb == NULL) { - while(i > 0) { /* free any that were allocated successfully */ - i--; - dev_kfree_skb(lp->rx_skb[i]); - lp->rx_skb[i] = NULL; - } - printk(KERN_ERR "%s: couldn't allocate receive buffers\n", - dev->name); - return -ENOMEM; - } - /* align IP header unless DMA requires otherwise */ - if (SONIC_BUS_SCALE(lp->dma_bitmode) == 2) - skb_reserve(skb, 2); - lp->rx_skb[i] = skb; - } - - for (i = 0; i < SONIC_NUM_RRS; i++) { - dma_addr_t laddr = dma_map_single(lp->device, skb_put(lp->rx_skb[i], SONIC_RBSIZE), - SONIC_RBSIZE, DMA_FROM_DEVICE); - if (!laddr) { - while(i > 0) { /* free any that were mapped successfully */ - i--; - dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE); - lp->rx_laddr[i] = (dma_addr_t)0; - } - for (i = 0; i < SONIC_NUM_RRS; i++) { - dev_kfree_skb(lp->rx_skb[i]); - lp->rx_skb[i] = NULL; - } - printk(KERN_ERR "%s: couldn't map rx DMA buffers\n", - dev->name); - return -ENOMEM; - } - lp->rx_laddr[i] = laddr; - } - - /* - * 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) -{ - struct sonic_local *lp = netdev_priv(dev); - int i; - - if (sonic_debug > 2) - printk("sonic_close\n"); - - netif_stop_queue(dev); - - /* - * stop the SONIC, disable interrupts - */ - SONIC_WRITE(SONIC_IMR, 0); - SONIC_WRITE(SONIC_ISR, 0x7fff); - SONIC_WRITE(SONIC_CMD, SONIC_CR_RST); - - /* unmap and free skbs that haven't been transmitted */ - for (i = 0; i < SONIC_NUM_TDS; i++) { - if(lp->tx_laddr[i]) { - dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE); - lp->tx_laddr[i] = (dma_addr_t)0; - } - if(lp->tx_skb[i]) { - dev_kfree_skb(lp->tx_skb[i]); - lp->tx_skb[i] = NULL; - } - } - - /* unmap and free the receive buffers */ - for (i = 0; i < SONIC_NUM_RRS; i++) { - if(lp->rx_laddr[i]) { - dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE); - lp->rx_laddr[i] = (dma_addr_t)0; - } - if(lp->rx_skb[i]) { - dev_kfree_skb(lp->rx_skb[i]); - lp->rx_skb[i] = NULL; - } - } - - return 0; -} - -static void sonic_tx_timeout(struct net_device *dev) -{ - struct sonic_local *lp = netdev_priv(dev); - int i; - /* - * put the Sonic into software-reset mode and - * disable all interrupts before releasing DMA buffers - */ - SONIC_WRITE(SONIC_IMR, 0); - SONIC_WRITE(SONIC_ISR, 0x7fff); - SONIC_WRITE(SONIC_CMD, SONIC_CR_RST); - /* We could resend the original skbs. Easier to re-initialise. */ - for (i = 0; i < SONIC_NUM_TDS; i++) { - if(lp->tx_laddr[i]) { - dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE); - lp->tx_laddr[i] = (dma_addr_t)0; - } - if(lp->tx_skb[i]) { - dev_kfree_skb(lp->tx_skb[i]); - lp->tx_skb[i] = NULL; - } - } - /* Try to restart the adaptor. */ - sonic_init(dev); - lp->stats.tx_errors++; - dev->trans_start = jiffies; /* prevent tx timeout */ - netif_wake_queue(dev); -} - -/* - * transmit packet - * - * Appends new TD during transmission thus avoiding any TX interrupts - * until we run out of TDs. - * This routine interacts closely with the ISR in that it may, - * set tx_skb[i] - * reset the status flags of the new TD - * set and reset EOL flags - * stop the tx queue - * The ISR interacts with this routine in various ways. It may, - * reset tx_skb[i] - * test the EOL and status flags of the TDs - * wake the tx queue - * Concurrently with all of this, the SONIC is potentially writing to - * the status flags of the TDs. - * Until some mutual exclusion is added, this code will not work with SMP. However, - * MIPS Jazz machines and m68k Macs were all uni-processor machines. - */ - -static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev) -{ - struct sonic_local *lp = netdev_priv(dev); - dma_addr_t laddr; - int length; - int entry = lp->next_tx; - - if (sonic_debug > 2) - printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev); - - length = skb->len; - if (length < ETH_ZLEN) { - if (skb_padto(skb, ETH_ZLEN)) - return NETDEV_TX_OK; - length = ETH_ZLEN; - } - - /* - * Map the packet data into the logical DMA address space - */ - - laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE); - if (!laddr) { - printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name); - dev_kfree_skb(skb); - return NETDEV_TX_BUSY; - } - - sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0); /* clear status */ - sonic_tda_put(dev, entry, SONIC_TD_FRAG_COUNT, 1); /* single fragment */ - sonic_tda_put(dev, entry, SONIC_TD_PKTSIZE, length); /* length of packet */ - sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_L, laddr & 0xffff); - sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_H, laddr >> 16); - sonic_tda_put(dev, entry, SONIC_TD_FRAG_SIZE, length); - sonic_tda_put(dev, entry, SONIC_TD_LINK, - sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL); - - /* - * Must set tx_skb[entry] only after clearing status, and - * before clearing EOL and before stopping queue - */ - wmb(); - lp->tx_len[entry] = length; - lp->tx_laddr[entry] = laddr; - lp->tx_skb[entry] = skb; - - wmb(); - sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK, - sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL); - lp->eol_tx = entry; - - lp->next_tx = (entry + 1) & SONIC_TDS_MASK; - if (lp->tx_skb[lp->next_tx] != NULL) { - /* The ring is full, the ISR has yet to process the next TD. */ - if (sonic_debug > 3) - printk("%s: stopping queue\n", dev->name); - netif_stop_queue(dev); - /* after this packet, wait for ISR to free up some TDAs */ - } else netif_start_queue(dev); - - if (sonic_debug > 2) - printk("sonic_send_packet: issuing Tx command\n"); - - SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP); - - return NETDEV_TX_OK; -} - -/* - * The typical workload of the driver: - * Handle the network interface interrupts. - */ -static irqreturn_t sonic_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct sonic_local *lp = netdev_priv(dev); - int status; - - if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT)) - return IRQ_NONE; - - do { - if (status & SONIC_INT_PKTRX) { - if (sonic_debug > 2) - printk("%s: packet rx\n", dev->name); - sonic_rx(dev); /* got packet(s) */ - SONIC_WRITE(SONIC_ISR, SONIC_INT_PKTRX); /* clear the interrupt */ - } - - if (status & SONIC_INT_TXDN) { - int entry = lp->cur_tx; - int td_status; - int freed_some = 0; - - /* At this point, cur_tx is the index of a TD that is one of: - * unallocated/freed (status set & tx_skb[entry] clear) - * allocated and sent (status set & tx_skb[entry] set ) - * allocated and not yet sent (status clear & tx_skb[entry] set ) - * still being allocated by sonic_send_packet (status clear & tx_skb[entry] clear) - */ - - if (sonic_debug > 2) - printk("%s: tx done\n", dev->name); - - while (lp->tx_skb[entry] != NULL) { - if ((td_status = sonic_tda_get(dev, entry, SONIC_TD_STATUS)) == 0) - break; - - if (td_status & 0x0001) { - lp->stats.tx_packets++; - lp->stats.tx_bytes += sonic_tda_get(dev, entry, SONIC_TD_PKTSIZE); - } else { - lp->stats.tx_errors++; - if (td_status & 0x0642) - lp->stats.tx_aborted_errors++; - if (td_status & 0x0180) - lp->stats.tx_carrier_errors++; - if (td_status & 0x0020) - lp->stats.tx_window_errors++; - if (td_status & 0x0004) - lp->stats.tx_fifo_errors++; - } - - /* We must free the original skb */ - dev_kfree_skb_irq(lp->tx_skb[entry]); - lp->tx_skb[entry] = NULL; - /* and unmap DMA buffer */ - dma_unmap_single(lp->device, lp->tx_laddr[entry], lp->tx_len[entry], DMA_TO_DEVICE); - lp->tx_laddr[entry] = (dma_addr_t)0; - freed_some = 1; - - if (sonic_tda_get(dev, entry, SONIC_TD_LINK) & SONIC_EOL) { - entry = (entry + 1) & SONIC_TDS_MASK; - break; - } - entry = (entry + 1) & SONIC_TDS_MASK; - } - - if (freed_some || lp->tx_skb[entry] == NULL) - netif_wake_queue(dev); /* The ring is no longer full */ - lp->cur_tx = entry; - SONIC_WRITE(SONIC_ISR, SONIC_INT_TXDN); /* clear the interrupt */ - } - - /* - * check error conditions - */ - if (status & SONIC_INT_RFO) { - if (sonic_debug > 1) - printk("%s: rx fifo overrun\n", dev->name); - lp->stats.rx_fifo_errors++; - SONIC_WRITE(SONIC_ISR, SONIC_INT_RFO); /* clear the interrupt */ - } - if (status & SONIC_INT_RDE) { - if (sonic_debug > 1) - printk("%s: rx descriptors exhausted\n", dev->name); - lp->stats.rx_dropped++; - SONIC_WRITE(SONIC_ISR, SONIC_INT_RDE); /* clear the interrupt */ - } - if (status & SONIC_INT_RBAE) { - if (sonic_debug > 1) - printk("%s: rx buffer area exceeded\n", dev->name); - lp->stats.rx_dropped++; - SONIC_WRITE(SONIC_ISR, SONIC_INT_RBAE); /* clear the interrupt */ - } - - /* counter overruns; all counters are 16bit wide */ - if (status & SONIC_INT_FAE) { - lp->stats.rx_frame_errors += 65536; - SONIC_WRITE(SONIC_ISR, SONIC_INT_FAE); /* clear the interrupt */ - } - if (status & SONIC_INT_CRC) { - lp->stats.rx_crc_errors += 65536; - SONIC_WRITE(SONIC_ISR, SONIC_INT_CRC); /* clear the interrupt */ - } - if (status & SONIC_INT_MP) { - lp->stats.rx_missed_errors += 65536; - SONIC_WRITE(SONIC_ISR, SONIC_INT_MP); /* clear the interrupt */ - } - - /* transmit error */ - if (status & SONIC_INT_TXER) { - if ((SONIC_READ(SONIC_TCR) & SONIC_TCR_FU) && (sonic_debug > 2)) - printk(KERN_ERR "%s: tx fifo underrun\n", dev->name); - SONIC_WRITE(SONIC_ISR, SONIC_INT_TXER); /* clear the interrupt */ - } - - /* bus retry */ - if (status & SONIC_INT_BR) { - printk(KERN_ERR "%s: Bus retry occurred! Device interrupt disabled.\n", - dev->name); - /* ... to help debug DMA problems causing endless interrupts. */ - /* Bounce the eth interface to turn on the interrupt again. */ - SONIC_WRITE(SONIC_IMR, 0); - SONIC_WRITE(SONIC_ISR, SONIC_INT_BR); /* clear the interrupt */ - } - - /* load CAM done */ - if (status & SONIC_INT_LCD) - SONIC_WRITE(SONIC_ISR, SONIC_INT_LCD); /* clear the interrupt */ - } while((status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT)); - return IRQ_HANDLED; -} - -/* - * We have a good packet(s), pass it/them up the network stack. - */ -static void sonic_rx(struct net_device *dev) -{ - struct sonic_local *lp = netdev_priv(dev); - int status; - int entry = lp->cur_rx; - - while (sonic_rda_get(dev, entry, SONIC_RD_IN_USE) == 0) { - struct sk_buff *used_skb; - struct sk_buff *new_skb; - dma_addr_t new_laddr; - u16 bufadr_l; - u16 bufadr_h; - int pkt_len; - - status = sonic_rda_get(dev, entry, SONIC_RD_STATUS); - if (status & SONIC_RCR_PRX) { - /* Malloc up new buffer. */ - new_skb = dev_alloc_skb(SONIC_RBSIZE + 2); - if (new_skb == NULL) { - printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name); - lp->stats.rx_dropped++; - break; - } - /* provide 16 byte IP header alignment unless DMA requires otherwise */ - if(SONIC_BUS_SCALE(lp->dma_bitmode) == 2) - skb_reserve(new_skb, 2); - - new_laddr = dma_map_single(lp->device, skb_put(new_skb, SONIC_RBSIZE), - SONIC_RBSIZE, DMA_FROM_DEVICE); - if (!new_laddr) { - dev_kfree_skb(new_skb); - printk(KERN_ERR "%s: Failed to map rx buffer, dropping packet.\n", dev->name); - lp->stats.rx_dropped++; - break; - } - - /* now we have a new skb to replace it, pass the used one up the stack */ - dma_unmap_single(lp->device, lp->rx_laddr[entry], SONIC_RBSIZE, DMA_FROM_DEVICE); - used_skb = lp->rx_skb[entry]; - pkt_len = sonic_rda_get(dev, entry, SONIC_RD_PKTLEN); - skb_trim(used_skb, pkt_len); - used_skb->protocol = eth_type_trans(used_skb, dev); - netif_rx(used_skb); - lp->stats.rx_packets++; - lp->stats.rx_bytes += pkt_len; - - /* and insert the new skb */ - lp->rx_laddr[entry] = new_laddr; - lp->rx_skb[entry] = new_skb; - - bufadr_l = (unsigned long)new_laddr & 0xffff; - bufadr_h = (unsigned long)new_laddr >> 16; - sonic_rra_put(dev, entry, SONIC_RR_BUFADR_L, bufadr_l); - sonic_rra_put(dev, entry, SONIC_RR_BUFADR_H, bufadr_h); - } 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++; - } - if (status & SONIC_RCR_LPKT) { - /* - * this was the last packet out of the current receive buffer - * give the buffer back to the SONIC - */ - lp->cur_rwp += SIZEOF_SONIC_RR * SONIC_BUS_SCALE(lp->dma_bitmode); - if (lp->cur_rwp >= lp->rra_end) lp->cur_rwp = lp->rra_laddr & 0xffff; - SONIC_WRITE(SONIC_RWP, lp->cur_rwp); - if (SONIC_READ(SONIC_ISR) & SONIC_INT_RBE) { - if (sonic_debug > 2) - printk("%s: rx buffer exhausted\n", dev->name); - SONIC_WRITE(SONIC_ISR, SONIC_INT_RBE); /* clear the flag */ - } - } else - printk(KERN_ERR "%s: rx desc without RCR_LPKT. Shouldn't happen !?\n", - dev->name); - /* - * give back the descriptor - */ - sonic_rda_put(dev, entry, SONIC_RD_LINK, - sonic_rda_get(dev, entry, SONIC_RD_LINK) | SONIC_EOL); - sonic_rda_put(dev, entry, SONIC_RD_IN_USE, 1); - sonic_rda_put(dev, lp->eol_rx, SONIC_RD_LINK, - sonic_rda_get(dev, lp->eol_rx, SONIC_RD_LINK) & ~SONIC_EOL); - lp->eol_rx = entry; - lp->cur_rx = entry = (entry + 1) & SONIC_RDS_MASK; - } - /* - * If any worth-while packets have been received, netif_rx() - * 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 = netdev_priv(dev); - - /* 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 = netdev_priv(dev); - unsigned int rcr; - struct netdev_hw_addr *ha; - 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) || - (netdev_mc_count(dev) > 15)) { - rcr |= SONIC_RCR_AMC; - } else { - if (sonic_debug > 2) - printk("sonic_multicast_list: mc_count %d\n", - netdev_mc_count(dev)); - sonic_set_cam_enable(dev, 1); /* always enable our own address */ - i = 1; - netdev_for_each_mc_addr(ha, dev) { - addr = ha->addr; - sonic_cda_put(dev, i, SONIC_CD_CAP0, addr[1] << 8 | addr[0]); - sonic_cda_put(dev, i, SONIC_CD_CAP1, addr[3] << 8 | addr[2]); - sonic_cda_put(dev, i, SONIC_CD_CAP2, addr[5] << 8 | addr[4]); - sonic_set_cam_enable(dev, sonic_get_cam_enable(dev) | (1 << i)); - 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 cmd; - struct sonic_local *lp = netdev_priv(dev); - int i; - - /* - * put the Sonic into software-reset mode and - * disable all interrupts - */ - SONIC_WRITE(SONIC_IMR, 0); - SONIC_WRITE(SONIC_ISR, 0x7fff); - 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"); - - for (i = 0; i < SONIC_NUM_RRS; i++) { - u16 bufadr_l = (unsigned long)lp->rx_laddr[i] & 0xffff; - u16 bufadr_h = (unsigned long)lp->rx_laddr[i] >> 16; - sonic_rra_put(dev, i, SONIC_RR_BUFADR_L, bufadr_l); - sonic_rra_put(dev, i, SONIC_RR_BUFADR_H, bufadr_h); - sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_L, SONIC_RBSIZE >> 1); - sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_H, 0); - } - - /* initialize all RRA registers */ - lp->rra_end = (lp->rra_laddr + SONIC_NUM_RRS * SIZEOF_SONIC_RR * - SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff; - lp->cur_rwp = (lp->rra_laddr + (SONIC_NUM_RRS - 1) * SIZEOF_SONIC_RR * - SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff; - - SONIC_WRITE(SONIC_RSA, lp->rra_laddr & 0xffff); - SONIC_WRITE(SONIC_REA, lp->rra_end); - SONIC_WRITE(SONIC_RRP, lp->rra_laddr & 0xffff); - SONIC_WRITE(SONIC_RWP, lp->cur_rwp); - SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16); - SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE >> 1) - (lp->dma_bitmode ? 2 : 1)); - - /* load the resource pointers */ - if (sonic_debug > 3) - printk("sonic_init: issuing 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 i=%d\n", SONIC_READ(SONIC_CMD), i); - - /* - * 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++) { - sonic_rda_put(dev, i, SONIC_RD_STATUS, 0); - sonic_rda_put(dev, i, SONIC_RD_PKTLEN, 0); - sonic_rda_put(dev, i, SONIC_RD_PKTPTR_L, 0); - sonic_rda_put(dev, i, SONIC_RD_PKTPTR_H, 0); - sonic_rda_put(dev, i, SONIC_RD_SEQNO, 0); - sonic_rda_put(dev, i, SONIC_RD_IN_USE, 1); - sonic_rda_put(dev, i, SONIC_RD_LINK, - lp->rda_laddr + - ((i+1) * SIZEOF_SONIC_RD * SONIC_BUS_SCALE(lp->dma_bitmode))); - } - /* fix last descriptor */ - sonic_rda_put(dev, SONIC_NUM_RDS - 1, SONIC_RD_LINK, - (lp->rda_laddr & 0xffff) | SONIC_EOL); - lp->eol_rx = SONIC_NUM_RDS - 1; - 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++) { - sonic_tda_put(dev, i, SONIC_TD_STATUS, 0); - sonic_tda_put(dev, i, SONIC_TD_CONFIG, 0); - sonic_tda_put(dev, i, SONIC_TD_PKTSIZE, 0); - sonic_tda_put(dev, i, SONIC_TD_FRAG_COUNT, 0); - sonic_tda_put(dev, i, SONIC_TD_LINK, - (lp->tda_laddr & 0xffff) + - (i + 1) * SIZEOF_SONIC_TD * SONIC_BUS_SCALE(lp->dma_bitmode)); - lp->tx_skb[i] = NULL; - } - /* fix last descriptor */ - sonic_tda_put(dev, SONIC_NUM_TDS - 1, SONIC_TD_LINK, - (lp->tda_laddr & 0xffff)); - - SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16); - SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff); - lp->cur_tx = lp->next_tx = 0; - lp->eol_tx = SONIC_NUM_TDS - 1; - - /* - * put our own address to CAM desc[0] - */ - sonic_cda_put(dev, 0, SONIC_CD_CAP0, dev->dev_addr[1] << 8 | dev->dev_addr[0]); - sonic_cda_put(dev, 0, SONIC_CD_CAP1, dev->dev_addr[3] << 8 | dev->dev_addr[2]); - sonic_cda_put(dev, 0, SONIC_CD_CAP2, dev->dev_addr[5] << 8 | dev->dev_addr[4]); - sonic_set_cam_enable(dev, 1); - - for (i = 0; i < 16; i++) - sonic_cda_put(dev, i, SONIC_CD_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, i=%d", - SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR), i); - } - - /* - * 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(KERN_ERR "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"); |