-/* sbni.c: Granch SBNI12 leased line adapters driver for linux
- *
- * Written 2001 by Denis I.Timofeev (timofeev@granch.ru)
- *
- * Previous versions were written by Yaroslav Polyakov,
- * Alexey Zverev and Max Khon.
- *
- * Driver supports SBNI12-02,-04,-05,-10,-11 cards, single and
- * double-channel, PCI and ISA modifications.
- * More info and useful utilities to work with SBNI12 cards you can find
- * at http://www.granch.com (English) or http://www.granch.ru (Russian)
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License.
- *
- *
- * 5.0.1 Jun 22 2001
- * - Fixed bug in probe
- * 5.0.0 Jun 06 2001
- * - Driver was completely redesigned by Denis I.Timofeev,
- * - now PCI/Dual, ISA/Dual (with single interrupt line) models are
- * - supported
- * 3.3.0 Thu Feb 24 21:30:28 NOVT 2000
- * - PCI cards support
- * 3.2.0 Mon Dec 13 22:26:53 NOVT 1999
- * - Completely rebuilt all the packet storage system
- * - to work in Ethernet-like style.
- * 3.1.1 just fixed some bugs (5 aug 1999)
- * 3.1.0 added balancing feature (26 apr 1999)
- * 3.0.1 just fixed some bugs (14 apr 1999).
- * 3.0.0 Initial Revision, Yaroslav Polyakov (24 Feb 1999)
- * - added pre-calculation for CRC, fixed bug with "len-2" frames,
- * - removed outbound fragmentation (MTU=1000), written CRC-calculation
- * - on asm, added work with hard_headers and now we have our own cache
- * - for them, optionally supported word-interchange on some chipsets,
- *
- * Known problem: this driver wasn't tested on multiprocessor machine.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/ptrace.h>
-#include <linux/fcntl.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/pci.h>
-#include <linux/skbuff.h>
-#include <linux/timer.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include <net/net_namespace.h>
-#include <net/arp.h>
-#include <net/Space.h>
-
-#include <asm/io.h>
-#include <asm/types.h>
-#include <asm/byteorder.h>
-#include <asm/irq.h>
-#include <linux/uaccess.h>
-
-#include "sbni.h"
-
-/* device private data */
-
-struct net_local {
- struct timer_list watchdog;
- struct net_device *watchdog_dev;
-
- spinlock_t lock;
- struct sk_buff *rx_buf_p; /* receive buffer ptr */
- struct sk_buff *tx_buf_p; /* transmit buffer ptr */
-
- unsigned int framelen; /* current frame length */
- unsigned int maxframe; /* maximum valid frame length */
- unsigned int state;
- unsigned int inppos, outpos; /* positions in rx/tx buffers */
-
- /* transmitting frame number - from frames qty to 1 */
- unsigned int tx_frameno;
-
- /* expected number of next receiving frame */
- unsigned int wait_frameno;
-
- /* count of failed attempts to frame send - 32 attempts do before
- error - while receiver tunes on opposite side of wire */
- unsigned int trans_errors;
-
- /* idle time; send pong when limit exceeded */
- unsigned int timer_ticks;
-
- /* fields used for receive level autoselection */
- int delta_rxl;
- unsigned int cur_rxl_index, timeout_rxl;
- unsigned long cur_rxl_rcvd, prev_rxl_rcvd;
-
- struct sbni_csr1 csr1; /* current value of CSR1 */
- struct sbni_in_stats in_stats; /* internal statistics */
-
- struct net_device *second; /* for ISA/dual cards */
-
-#ifdef CONFIG_SBNI_MULTILINE
- struct net_device *master;
- struct net_device *link;
-#endif
-};
-
-
-static int sbni_card_probe( unsigned long );
-static int sbni_pci_probe( struct net_device * );
-static struct net_device *sbni_probe1(struct net_device *, unsigned long, int);
-static int sbni_open( struct net_device * );
-static int sbni_close( struct net_device * );
-static netdev_tx_t sbni_start_xmit(struct sk_buff *,
- struct net_device * );
-static int sbni_siocdevprivate(struct net_device *, struct ifreq *,
- void __user *, int);
-static void set_multicast_list( struct net_device * );
-
-static irqreturn_t sbni_interrupt( int, void * );
-static void handle_channel( struct net_device * );
-static int recv_frame( struct net_device * );
-static void send_frame( struct net_device * );
-static int upload_data( struct net_device *,
- unsigned, unsigned, unsigned, u32 );
-static void download_data( struct net_device *, u32 * );
-static void sbni_watchdog(struct timer_list *);
-static void interpret_ack( struct net_device *, unsigned );
-static int append_frame_to_pkt( struct net_device *, unsigned, u32 );
-static void indicate_pkt( struct net_device * );
-static void card_start( struct net_device * );
-static void prepare_to_send( struct sk_buff *, struct net_device * );
-static void drop_xmit_queue( struct net_device * );
-static void send_frame_header( struct net_device *, u32 * );
-static int skip_tail( unsigned int, unsigned int, u32 );
-static int check_fhdr( u32, u32 *, u32 *, u32 *, u32 *, u32 * );
-static void change_level( struct net_device * );
-static void timeout_change_level( struct net_device * );
-static u32 calc_crc32( u32, u8 *, u32 );
-static struct sk_buff * get_rx_buf( struct net_device * );
-static int sbni_init( struct net_device * );
-
-#ifdef CONFIG_SBNI_MULTILINE
-static int enslave( struct net_device *, struct net_device * );
-static int emancipate( struct net_device * );
-#endif
-
-static const char version[] =
- "Granch SBNI12 driver ver 5.0.1 Jun 22 2001 Denis I.Timofeev.\n";
-
-static bool skip_pci_probe __initdata = false;
-static int scandone __initdata = 0;
-static int num __initdata = 0;
-
-static unsigned char rxl_tab[];
-static u32 crc32tab[];
-
-/* A list of all installed devices, for removing the driver module. */
-static struct net_device *sbni_cards[ SBNI_MAX_NUM_CARDS ];
-
-/* Lists of device's parameters */
-static u32 io[ SBNI_MAX_NUM_CARDS ] __initdata =
- { [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
-static u32 irq[ SBNI_MAX_NUM_CARDS ] __initdata;
-static u32 baud[ SBNI_MAX_NUM_CARDS ] __initdata;
-static u32 rxl[ SBNI_MAX_NUM_CARDS ] __initdata =
- { [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
-static u32 mac[ SBNI_MAX_NUM_CARDS ] __initdata;
-
-#ifndef MODULE
-typedef u32 iarr[];
-static iarr *dest[5] __initdata = { &io, &irq, &baud, &rxl, &mac };
-#endif
-
-/* A zero-terminated list of I/O addresses to be probed on ISA bus */
-static unsigned int netcard_portlist[ ] __initdata = {
- 0x210, 0x214, 0x220, 0x224, 0x230, 0x234, 0x240, 0x244, 0x250, 0x254,
- 0x260, 0x264, 0x270, 0x274, 0x280, 0x284, 0x290, 0x294, 0x2a0, 0x2a4,
- 0x2b0, 0x2b4, 0x2c0, 0x2c4, 0x2d0, 0x2d4, 0x2e0, 0x2e4, 0x2f0, 0x2f4,
- 0 };
-
-#define NET_LOCAL_LOCK(dev) (((struct net_local *)netdev_priv(dev))->lock)
-
-/*
- * Look for SBNI card which addr stored in dev->base_addr, if nonzero.
- * Otherwise, look through PCI bus. If none PCI-card was found, scan ISA.
- */
-
-static inline int __init
-sbni_isa_probe( struct net_device *dev )
-{
- if( dev->base_addr > 0x1ff &&
- request_region( dev->base_addr, SBNI_IO_EXTENT, dev->name ) &&
- sbni_probe1( dev, dev->base_addr, dev->irq ) )
-
- return 0;
- else {
- pr_err("base address 0x%lx is busy, or adapter is malfunctional!\n",
- dev->base_addr);
- return -ENODEV;
- }
-}
-
-static const struct net_device_ops sbni_netdev_ops = {
- .ndo_open = sbni_open,
- .ndo_stop = sbni_close,
- .ndo_start_xmit = sbni_start_xmit,
- .ndo_set_rx_mode = set_multicast_list,
- .ndo_siocdevprivate = sbni_siocdevprivate,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static void __init sbni_devsetup(struct net_device *dev)
-{
- ether_setup( dev );
- dev->netdev_ops = &sbni_netdev_ops;
-}
-
-int __init sbni_probe(int unit)
-{
- struct net_device *dev;
- int err;
-
- dev = alloc_netdev(sizeof(struct net_local), "sbni",
- NET_NAME_UNKNOWN, sbni_devsetup);
- if (!dev)
- return -ENOMEM;
-
- dev->netdev_ops = &sbni_netdev_ops;
-
- sprintf(dev->name, "sbni%d", unit);
- netdev_boot_setup_check(dev);
-
- err = sbni_init(dev);
- if (err) {
- free_netdev(dev);
- return err;
- }
-
- err = register_netdev(dev);
- if (err) {
- release_region( dev->base_addr, SBNI_IO_EXTENT );
- free_netdev(dev);
- return err;
- }
- pr_info_once("%s", version);
- return 0;
-}
-
-static int __init sbni_init(struct net_device *dev)
-{
- int i;
- if( dev->base_addr )
- return sbni_isa_probe( dev );
- /* otherwise we have to perform search our adapter */
-
- if( io[ num ] != -1 ) {
- dev->base_addr = io[ num ];
- dev->irq = irq[ num ];
- } else if( scandone || io[ 0 ] != -1 ) {
- return -ENODEV;
- }
-
- /* if io[ num ] contains non-zero address, then that is on ISA bus */
- if( dev->base_addr )
- return sbni_isa_probe( dev );
-
- /* ...otherwise - scan PCI first */
- if( !skip_pci_probe && !sbni_pci_probe( dev ) )
- return 0;
-
- if( io[ num ] == -1 ) {
- /* Auto-scan will be stopped when first ISA card were found */
- scandone = 1;
- if( num > 0 )
- return -ENODEV;
- }
-
- for( i = 0; netcard_portlist[ i ]; ++i ) {
- int ioaddr = netcard_portlist[ i ];
- if( request_region( ioaddr, SBNI_IO_EXTENT, dev->name ) &&
- sbni_probe1( dev, ioaddr, 0 ))
- return 0;
- }
-
- return -ENODEV;
-}
-
-
-static int __init
-sbni_pci_probe( struct net_device *dev )
-{
- struct pci_dev *pdev = NULL;
-
- while( (pdev = pci_get_class( PCI_CLASS_NETWORK_OTHER << 8, pdev ))
- != NULL ) {
- int pci_irq_line;
- unsigned long pci_ioaddr;
-
- if( pdev->vendor != SBNI_PCI_VENDOR &&
- pdev->device != SBNI_PCI_DEVICE )
- continue;
-
- pci_ioaddr = pci_resource_start( pdev, 0 );
- pci_irq_line = pdev->irq;
-
- /* Avoid already found cards from previous calls */
- if( !request_region( pci_ioaddr, SBNI_IO_EXTENT, dev->name ) ) {
- if (pdev->subsystem_device != 2)
- continue;
-
- /* Dual adapter is present */
- if (!request_region(pci_ioaddr += 4, SBNI_IO_EXTENT,
- dev->name ) )
- continue;
- }
-
- if (pci_irq_line <= 0 || pci_irq_line >= nr_irqs)
- pr_warn(
-"WARNING: The PCI BIOS assigned this PCI card to IRQ %d, which is unlikely to work!.\n"
-"You should use the PCI BIOS setup to assign a valid IRQ line.\n",
- pci_irq_line );
-
- /* avoiding re-enable dual adapters */
- if( (pci_ioaddr & 7) == 0 && pci_enable_device( pdev ) ) {
- release_region( pci_ioaddr, SBNI_IO_EXTENT );
- pci_dev_put( pdev );
- return -EIO;
- }
- if( sbni_probe1( dev, pci_ioaddr, pci_irq_line ) ) {
- SET_NETDEV_DEV(dev, &pdev->dev);
- /* not the best thing to do, but this is all messed up
- for hotplug systems anyway... */
- pci_dev_put( pdev );
- return 0;
- }
- }
- return -ENODEV;
-}
-
-
-static struct net_device * __init
-sbni_probe1( struct net_device *dev, unsigned long ioaddr, int irq )
-{
- struct net_local *nl;
-
- if( sbni_card_probe( ioaddr ) ) {
- release_region( ioaddr, SBNI_IO_EXTENT );
- return NULL;
- }
-
- outb( 0, ioaddr + CSR0 );
-
- if( irq < 2 ) {
- unsigned long irq_mask;
-
- irq_mask = probe_irq_on();
- outb( EN_INT | TR_REQ, ioaddr + CSR0 );
- outb( PR_RES, ioaddr + CSR1 );
- mdelay(50);
- irq = probe_irq_off(irq_mask);
- outb( 0, ioaddr + CSR0 );
-
- if( !irq ) {
- pr_err("%s: can't detect device irq!\n", dev->name);
- release_region( ioaddr, SBNI_IO_EXTENT );
- return NULL;
- }
- } else if( irq == 2 )
- irq = 9;
-
- dev->irq = irq;
- dev->base_addr = ioaddr;
-
- /* Fill in sbni-specific dev fields. */
- nl = netdev_priv(dev);
- if( !nl ) {
- pr_err("%s: unable to get memory!\n", dev->name);
- release_region( ioaddr, SBNI_IO_EXTENT );
- return NULL;
- }
-
- memset( nl, 0, sizeof(struct net_local) );
- spin_lock_init( &nl->lock );
-
- /* store MAC address (generate if that isn't known) */
- *(__be16 *)dev->dev_addr = htons( 0x00ff );
- *(__be32 *)(dev->dev_addr + 2) = htonl( 0x01000000 |
- ((mac[num] ?
- mac[num] :
- (u32)((long)netdev_priv(dev))) & 0x00ffffff));
-
- /* store link settings (speed, receive level ) */
- nl->maxframe = DEFAULT_FRAME_LEN;
- nl->csr1.rate = baud[ num ];
-
- if( (nl->cur_rxl_index = rxl[ num ]) == -1 ) {
- /* autotune rxl */
- nl->cur_rxl_index = DEF_RXL;
- nl->delta_rxl = DEF_RXL_DELTA;
- } else {
- nl->delta_rxl = 0;
- }
- nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
- if( inb( ioaddr + CSR0 ) & 0x01 )
- nl->state |= FL_SLOW_MODE;
-
- pr_notice("%s: ioaddr %#lx, irq %d, MAC: 00:ff:01:%02x:%02x:%02x\n",
- dev->name, dev->base_addr, dev->irq,
- ((u8 *)dev->dev_addr)[3],
- ((u8 *)dev->dev_addr)[4],
- ((u8 *)dev->dev_addr)[5]);
-
- pr_notice("%s: speed %d",
- dev->name,
- ((nl->state & FL_SLOW_MODE) ? 500000 : 2000000)
- / (1 << nl->csr1.rate));
-
- if( nl->delta_rxl == 0 )
- pr_cont(", receive level 0x%x (fixed)\n", nl->cur_rxl_index);
- else
- pr_cont(", receive level (auto)\n");
-
-#ifdef CONFIG_SBNI_MULTILINE
- nl->master = dev;
- nl->link = NULL;
-#endif
-
- sbni_cards[ num++ ] = dev;
- return dev;
-}
-
-/* -------------------------------------------------------------------------- */
-
-#ifdef CONFIG_SBNI_MULTILINE
-
-static netdev_tx_t
-sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
-{
- struct net_device *p;
-
- netif_stop_queue( dev );
-
- /* Looking for idle device in the list */
- for( p = dev; p; ) {
- struct net_local *nl = netdev_priv(p);
- spin_lock( &nl->lock );
- if( nl->tx_buf_p || (nl->state & FL_LINE_DOWN) ) {
- p = nl->link;
- spin_unlock( &nl->lock );
- } else {
- /* Idle dev is found */
- prepare_to_send( skb, p );
- spin_unlock( &nl->lock );
- netif_start_queue( dev );
- return NETDEV_TX_OK;
- }
- }
-
- return NETDEV_TX_BUSY;
-}
-
-#else /* CONFIG_SBNI_MULTILINE */
-
-static netdev_tx_t
-sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- netif_stop_queue( dev );
- spin_lock( &nl->lock );
-
- prepare_to_send( skb, dev );
-
- spin_unlock( &nl->lock );
- return NETDEV_TX_OK;
-}
-
-#endif /* CONFIG_SBNI_MULTILINE */
-
-/* -------------------------------------------------------------------------- */
-
-/* interrupt handler */
-
-/*
- * SBNI12D-10, -11/ISA boards within "common interrupt" mode could not
- * be looked as two independent single-channel devices. Every channel seems
- * as Ethernet interface but interrupt handler must be common. Really, first
- * channel ("master") driver only registers the handler. In its struct net_local
- * it has got pointer to "slave" channel's struct net_local and handles that's
- * interrupts too.
- * dev of successfully attached ISA SBNI boards is linked to list.
- * While next board driver is initialized, it scans this list. If one
- * has found dev with same irq and ioaddr different by 4 then it assumes
- * this board to be "master".
- */
-
-static irqreturn_t
-sbni_interrupt( int irq, void *dev_id )
-{
- struct net_device *dev = dev_id;
- struct net_local *nl = netdev_priv(dev);
- int repeat;
-
- spin_lock( &nl->lock );
- if( nl->second )
- spin_lock(&NET_LOCAL_LOCK(nl->second));
-
- do {
- repeat = 0;
- if( inb( dev->base_addr + CSR0 ) & (RC_RDY | TR_RDY) ) {
- handle_channel( dev );
- repeat = 1;
- }
- if( nl->second && /* second channel present */
- (inb( nl->second->base_addr+CSR0 ) & (RC_RDY | TR_RDY)) ) {
- handle_channel( nl->second );
- repeat = 1;
- }
- } while( repeat );
-
- if( nl->second )
- spin_unlock(&NET_LOCAL_LOCK(nl->second));
- spin_unlock( &nl->lock );
- return IRQ_HANDLED;
-}
-
-
-static void
-handle_channel( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
- unsigned long ioaddr = dev->base_addr;
-
- int req_ans;
- unsigned char csr0;
-
-#ifdef CONFIG_SBNI_MULTILINE
- /* Lock the master device because we going to change its local data */
- if( nl->state & FL_SLAVE )
- spin_lock(&NET_LOCAL_LOCK(nl->master));
-#endif
-
- outb( (inb( ioaddr + CSR0 ) & ~EN_INT) | TR_REQ, ioaddr + CSR0 );
-
- nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
- for(;;) {
- csr0 = inb( ioaddr + CSR0 );
- if( ( csr0 & (RC_RDY | TR_RDY) ) == 0 )
- break;
-
- req_ans = !(nl->state & FL_PREV_OK);
-
- if( csr0 & RC_RDY )
- req_ans = recv_frame( dev );
-
- /*
- * TR_RDY always equals 1 here because we have owned the marker,
- * and we set TR_REQ when disabled interrupts
- */
- csr0 = inb( ioaddr + CSR0 );
- if( !(csr0 & TR_RDY) || (csr0 & RC_RDY) )
- netdev_err(dev, "internal error!\n");
-
- /* if state & FL_NEED_RESEND != 0 then tx_frameno != 0 */
- if( req_ans || nl->tx_frameno != 0 )
- send_frame( dev );
- else
- /* send marker without any data */
- outb( inb( ioaddr + CSR0 ) & ~TR_REQ, ioaddr + CSR0 );
- }
-
- outb( inb( ioaddr + CSR0 ) | EN_INT, ioaddr + CSR0 );
-
-#ifdef CONFIG_SBNI_MULTILINE
- if( nl->state & FL_SLAVE )
- spin_unlock(&NET_LOCAL_LOCK(nl->master));
-#endif
-}
-
-
-/*
- * Routine returns 1 if it needs to acknowledge received frame.
- * Empty frame received without errors won't be acknowledged.
- */
-
-static int
-recv_frame( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
- unsigned long ioaddr = dev->base_addr;
-
- u32 crc = CRC32_INITIAL;
-
- unsigned framelen = 0, frameno, ack;
- unsigned is_first, frame_ok = 0;
-
- if( check_fhdr( ioaddr, &framelen, &frameno, &ack, &is_first, &crc ) ) {
- frame_ok = framelen > 4
- ? upload_data( dev, framelen, frameno, is_first, crc )
- : skip_tail( ioaddr, framelen, crc );
- if( frame_ok )
- interpret_ack( dev, ack );
- }
-
- outb( inb( ioaddr + CSR0 ) ^ CT_ZER, ioaddr + CSR0 );
- if( frame_ok ) {
- nl->state |= FL_PREV_OK;
- if( framelen > 4 )
- nl->in_stats.all_rx_number++;
- } else {
- nl->state &= ~FL_PREV_OK;
- change_level( dev );
- nl->in_stats.all_rx_number++;
- nl->in_stats.bad_rx_number++;
- }
-
- return !frame_ok || framelen > 4;
-}
-
-
-static void
-send_frame( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- u32 crc = CRC32_INITIAL;
-
- if( nl->state & FL_NEED_RESEND ) {
-
- /* if frame was sended but not ACK'ed - resend it */
- if( nl->trans_errors ) {
- --nl->trans_errors;
- if( nl->framelen != 0 )
- nl->in_stats.resend_tx_number++;
- } else {
- /* cannot xmit with many attempts */
-#ifdef CONFIG_SBNI_MULTILINE
- if( (nl->state & FL_SLAVE) || nl->link )
-#endif
- nl->state |= FL_LINE_DOWN;
- drop_xmit_queue( dev );
- goto do_send;
- }
- } else
- nl->trans_errors = TR_ERROR_COUNT;
-
- send_frame_header( dev, &crc );
- nl->state |= FL_NEED_RESEND;
- /*
- * FL_NEED_RESEND will be cleared after ACK, but if empty
- * frame sended then in prepare_to_send next frame
- */
-
-
- if( nl->framelen ) {
- download_data( dev, &crc );
- nl->in_stats.all_tx_number++;
- nl->state |= FL_WAIT_ACK;
- }
-
- outsb( dev->base_addr + DAT, (u8 *)&crc, sizeof crc );
-
-do_send:
- outb( inb( dev->base_addr + CSR0 ) & ~TR_REQ, dev->base_addr + CSR0 );
-
- if( nl->tx_frameno )
- /* next frame exists - we request card to send it */
- outb( inb( dev->base_addr + CSR0 ) | TR_REQ,
- dev->base_addr + CSR0 );
-}
-
-
-/*
- * Write the frame data into adapter's buffer memory, and calculate CRC.
- * Do padding if necessary.
- */
-
-static void
-download_data( struct net_device *dev, u32 *crc_p )
-{
- struct net_local *nl = netdev_priv(dev);
- struct sk_buff *skb = nl->tx_buf_p;
-
- unsigned len = min_t(unsigned int, skb->len - nl->outpos, nl->framelen);
-
- outsb( dev->base_addr + DAT, skb->data + nl->outpos, len );
- *crc_p = calc_crc32( *crc_p, skb->data + nl->outpos, len );
-
- /* if packet too short we should write some more bytes to pad */
- for( len = nl->framelen - len; len--; ) {
- outb( 0, dev->base_addr + DAT );
- *crc_p = CRC32( 0, *crc_p );
- }
-}
-
-
-static int
-upload_data( struct net_device *dev, unsigned framelen, unsigned frameno,
- unsigned is_first, u32 crc )
-{
- struct net_local *nl = netdev_priv(dev);
-
- int frame_ok;
-
- if( is_first ) {
- nl->wait_frameno = frameno;
- nl->inppos = 0;
- }
-
- if( nl->wait_frameno == frameno ) {
-
- if( nl->inppos + framelen <= ETHER_MAX_LEN )
- frame_ok = append_frame_to_pkt( dev, framelen, crc );
-
- /*
- * if CRC is right but framelen incorrect then transmitter
- * error was occurred... drop entire packet
- */
- else if( (frame_ok = skip_tail( dev->base_addr, framelen, crc ))
- != 0 ) {
- nl->wait_frameno = 0;
- nl->inppos = 0;
-#ifdef CONFIG_SBNI_MULTILINE
- nl->master->stats.rx_errors++;
- nl->master->stats.rx_missed_errors++;
-#else
- dev->stats.rx_errors++;
- dev->stats.rx_missed_errors++;
-#endif
- }
- /* now skip all frames until is_first != 0 */
- } else
- frame_ok = skip_tail( dev->base_addr, framelen, crc );
-
- if( is_first && !frame_ok ) {
- /*
- * Frame has been broken, but we had already stored
- * is_first... Drop entire packet.
- */
- nl->wait_frameno = 0;
-#ifdef CONFIG_SBNI_MULTILINE
- nl->master->stats.rx_errors++;
- nl->master->stats.rx_crc_errors++;
-#else
- dev->stats.rx_errors++;
- dev->stats.rx_crc_errors++;
-#endif
- }
-
- return frame_ok;
-}
-
-
-static inline void
-send_complete( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
-#ifdef CONFIG_SBNI_MULTILINE
- nl->master->stats.tx_packets++;
- nl->master->stats.tx_bytes += nl->tx_buf_p->len;
-#else
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += nl->tx_buf_p->len;
-#endif
- dev_consume_skb_irq(nl->tx_buf_p);
-
- nl->tx_buf_p = NULL;
-
- nl->outpos = 0;
- nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
- nl->framelen = 0;
-}
-
-
-static void
-interpret_ack( struct net_device *dev, unsigned ack )
-{
- struct net_local *nl = netdev_priv(dev);
-
- if( ack == FRAME_SENT_OK ) {
- nl->state &= ~FL_NEED_RESEND;
-
- if( nl->state & FL_WAIT_ACK ) {
- nl->outpos += nl->framelen;
-
- if( --nl->tx_frameno ) {
- nl->framelen = min_t(unsigned int,
- nl->maxframe,
- nl->tx_buf_p->len - nl->outpos);
- } else {
- send_complete( dev );
-#ifdef CONFIG_SBNI_MULTILINE
- netif_wake_queue( nl->master );
-#else
- netif_wake_queue( dev );
-#endif
- }
- }
- }
-
- nl->state &= ~FL_WAIT_ACK;
-}
-
-
-/*
- * Glue received frame with previous fragments of packet.
- * Indicate packet when last frame would be accepted.
- */
-
-static int
-append_frame_to_pkt( struct net_device *dev, unsigned framelen, u32 crc )
-{
- struct net_local *nl = netdev_priv(dev);
-
- u8 *p;
-
- if( nl->inppos + framelen > ETHER_MAX_LEN )
- return 0;
-
- if( !nl->rx_buf_p && !(nl->rx_buf_p = get_rx_buf( dev )) )
- return 0;
-
- p = nl->rx_buf_p->data + nl->inppos;
- insb( dev->base_addr + DAT, p, framelen );
- if( calc_crc32( crc, p, framelen ) != CRC32_REMAINDER )
- return 0;
-
- nl->inppos += framelen - 4;
- if( --nl->wait_frameno == 0 ) /* last frame received */
- indicate_pkt( dev );
-
- return 1;
-}
-
-
-/*
- * Prepare to start output on adapter.
- * Transmitter will be actually activated when marker is accepted.
- */
-
-static void
-prepare_to_send( struct sk_buff *skb, struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- unsigned int len;
-
- /* nl->tx_buf_p == NULL here! */
- if( nl->tx_buf_p )
- netdev_err(dev, "memory leak!\n");
-
- nl->outpos = 0;
- nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
-
- len = skb->len;
- if( len < SBNI_MIN_LEN )
- len = SBNI_MIN_LEN;
-
- nl->tx_buf_p = skb;
- nl->tx_frameno = DIV_ROUND_UP(len, nl->maxframe);
- nl->framelen = len < nl->maxframe ? len : nl->maxframe;
-
- outb( inb( dev->base_addr + CSR0 ) | TR_REQ, dev->base_addr + CSR0 );
-#ifdef CONFIG_SBNI_MULTILINE
- netif_trans_update(nl->master);
-#else
- netif_trans_update(dev);
-#endif
-}
-
-
-static void
-drop_xmit_queue( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- if( nl->tx_buf_p ) {
- dev_kfree_skb_any( nl->tx_buf_p );
- nl->tx_buf_p = NULL;
-#ifdef CONFIG_SBNI_MULTILINE
- nl->master->stats.tx_errors++;
- nl->master->stats.tx_carrier_errors++;
-#else
- dev->stats.tx_errors++;
- dev->stats.tx_carrier_errors++;
-#endif
- }
-
- nl->tx_frameno = 0;
- nl->framelen = 0;
- nl->outpos = 0;
- nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
-#ifdef CONFIG_SBNI_MULTILINE
- netif_start_queue( nl->master );
- netif_trans_update(nl->master);
-#else
- netif_start_queue( dev );
- netif_trans_update(dev);
-#endif
-}
-
-
-static void
-send_frame_header( struct net_device *dev, u32 *crc_p )
-{
- struct net_local *nl = netdev_priv(dev);
-
- u32 crc = *crc_p;
- u32 len_field = nl->framelen + 6; /* CRC + frameno + reserved */
- u8 value;
-
- if( nl->state & FL_NEED_RESEND )
- len_field |= FRAME_RETRY; /* non-first attempt... */
-
- if( nl->outpos == 0 )
- len_field |= FRAME_FIRST;
-
- len_field |= (nl->state & FL_PREV_OK) ? FRAME_SENT_OK : FRAME_SENT_BAD;
- outb( SBNI_SIG, dev->base_addr + DAT );
-
- value = (u8) len_field;
- outb( value, dev->base_addr + DAT );
- crc = CRC32( value, crc );
- value = (u8) (len_field >> 8);
- outb( value, dev->base_addr + DAT );
- crc = CRC32( value, crc );
-
- outb( nl->tx_frameno, dev->base_addr + DAT );
- crc = CRC32( nl->tx_frameno, crc );
- outb( 0, dev->base_addr + DAT );
- crc = CRC32( 0, crc );
- *crc_p = crc;
-}
-
-
-/*
- * if frame tail not needed (incorrect number or received twice),
- * it won't store, but CRC will be calculated
- */
-
-static int
-skip_tail( unsigned int ioaddr, unsigned int tail_len, u32 crc )
-{
- while( tail_len-- )
- crc = CRC32( inb( ioaddr + DAT ), crc );
-
- return crc == CRC32_REMAINDER;
-}
-
-
-/*
- * Preliminary checks if frame header is correct, calculates its CRC
- * and split it to simple fields
- */
-
-static int
-check_fhdr( u32 ioaddr, u32 *framelen, u32 *frameno, u32 *ack,
- u32 *is_first, u32 *crc_p )
-{
- u32 crc = *crc_p;
- u8 value;
-
- if( inb( ioaddr + DAT ) != SBNI_SIG )
- return 0;
-
- value = inb( ioaddr + DAT );
- *framelen = (u32)value;
- crc = CRC32( value, crc );
- value = inb( ioaddr + DAT );
- *framelen |= ((u32)value) << 8;
- crc = CRC32( value, crc );
-
- *ack = *framelen & FRAME_ACK_MASK;
- *is_first = (*framelen & FRAME_FIRST) != 0;
-
- if( (*framelen &= FRAME_LEN_MASK) < 6 ||
- *framelen > SBNI_MAX_FRAME - 3 )
- return 0;
-
- value = inb( ioaddr + DAT );
- *frameno = (u32)value;
- crc = CRC32( value, crc );
-
- crc = CRC32( inb( ioaddr + DAT ), crc ); /* reserved byte */
- *framelen -= 2;
-
- *crc_p = crc;
- return 1;
-}
-
-
-static struct sk_buff *
-get_rx_buf( struct net_device *dev )
-{
- /* +2 is to compensate for the alignment fixup below */
- struct sk_buff *skb = dev_alloc_skb( ETHER_MAX_LEN + 2 );
- if( !skb )
- return NULL;
-
- skb_reserve( skb, 2 ); /* Align IP on longword boundaries */
- return skb;
-}
-
-
-static void
-indicate_pkt( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
- struct sk_buff *skb = nl->rx_buf_p;
-
- skb_put( skb, nl->inppos );
-
-#ifdef CONFIG_SBNI_MULTILINE
- skb->protocol = eth_type_trans( skb, nl->master );
- netif_rx( skb );
- ++nl->master->stats.rx_packets;
- nl->master->stats.rx_bytes += nl->inppos;
-#else
- skb->protocol = eth_type_trans( skb, dev );
- netif_rx( skb );
- ++dev->stats.rx_packets;
- dev->stats.rx_bytes += nl->inppos;
-#endif
- nl->rx_buf_p = NULL; /* protocol driver will clear this sk_buff */
-}
-
-
-/* -------------------------------------------------------------------------- */
-
-/*
- * Routine checks periodically wire activity and regenerates marker if
- * connect was inactive for a long time.
- */
-
-static void
-sbni_watchdog(struct timer_list *t)
-{
- struct net_local *nl = from_timer(nl, t, watchdog);
- struct net_device *dev = nl->watchdog_dev;
- unsigned long flags;
- unsigned char csr0;
-
- spin_lock_irqsave( &nl->lock, flags );
-
- csr0 = inb( dev->base_addr + CSR0 );
- if( csr0 & RC_CHK ) {
-
- if( nl->timer_ticks ) {
- if( csr0 & (RC_RDY | BU_EMP) )
- /* receiving not active */
- nl->timer_ticks--;
- } else {
- nl->in_stats.timeout_number++;
- if( nl->delta_rxl )
- timeout_change_level( dev );
-
- outb( *(u_char *)&nl->csr1 | PR_RES,
- dev->base_addr + CSR1 );
- csr0 = inb( dev->base_addr + CSR0 );
- }
- } else
- nl->state &= ~FL_LINE_DOWN;
-
- outb( csr0 | RC_CHK, dev->base_addr + CSR0 );
-
- mod_timer(t, jiffies + SBNI_TIMEOUT);
-
- spin_unlock_irqrestore( &nl->lock, flags );
-}
-
-
-static unsigned char rxl_tab[] = {
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08,
- 0x0a, 0x0c, 0x0f, 0x16, 0x18, 0x1a, 0x1c, 0x1f
-};
-
-#define SIZE_OF_TIMEOUT_RXL_TAB 4
-static unsigned char timeout_rxl_tab[] = {
- 0x03, 0x05, 0x08, 0x0b
-};
-
-/* -------------------------------------------------------------------------- */
-
-static void
-card_start( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
- nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
- nl->state |= FL_PREV_OK;
-
- nl->inppos = nl->outpos = 0;
- nl->wait_frameno = 0;
- nl->tx_frameno = 0;
- nl->framelen = 0;
-
- outb( *(u_char *)&nl->csr1 | PR_RES, dev->base_addr + CSR1 );
- outb( EN_INT, dev->base_addr + CSR0 );
-}
-
-/* -------------------------------------------------------------------------- */
-
-/* Receive level auto-selection */
-
-static void
-change_level( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- if( nl->delta_rxl == 0 ) /* do not auto-negotiate RxL */
- return;
-
- if( nl->cur_rxl_index == 0 )
- nl->delta_rxl = 1;
- else if( nl->cur_rxl_index == 15 )
- nl->delta_rxl = -1;
- else if( nl->cur_rxl_rcvd < nl->prev_rxl_rcvd )
- nl->delta_rxl = -nl->delta_rxl;
-
- nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index += nl->delta_rxl ];
- inb( dev->base_addr + CSR0 ); /* needs for PCI cards */
- outb( *(u8 *)&nl->csr1, dev->base_addr + CSR1 );
-
- nl->prev_rxl_rcvd = nl->cur_rxl_rcvd;
- nl->cur_rxl_rcvd = 0;
-}
-
-
-static void
-timeout_change_level( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- nl->cur_rxl_index = timeout_rxl_tab[ nl->timeout_rxl ];
- if( ++nl->timeout_rxl >= 4 )
- nl->timeout_rxl = 0;
-
- nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
- inb( dev->base_addr + CSR0 );
- outb( *(unsigned char *)&nl->csr1, dev->base_addr + CSR1 );
-
- nl->prev_rxl_rcvd = nl->cur_rxl_rcvd;
- nl->cur_rxl_rcvd = 0;
-}
-
-/* -------------------------------------------------------------------------- */
-
-/*
- * Open/initialize the board.
- */
-
-static int
-sbni_open( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
- struct timer_list *w = &nl->watchdog;
-
- /*
- * For double ISA adapters within "common irq" mode, we have to
- * determine whether primary or secondary channel is initialized,
- * and set the irq handler only in first case.
- */
- if( dev->base_addr < 0x400 ) { /* ISA only */
- struct net_device **p = sbni_cards;
- for( ; *p && p < sbni_cards + SBNI_MAX_NUM_CARDS; ++p )
- if( (*p)->irq == dev->irq &&
- ((*p)->base_addr == dev->base_addr + 4 ||
- (*p)->base_addr == dev->base_addr - 4) &&
- (*p)->flags & IFF_UP ) {
-
- ((struct net_local *) (netdev_priv(*p)))
- ->second = dev;
- netdev_notice(dev, "using shared irq with %s\n",
- (*p)->name);
- nl->state |= FL_SECONDARY;
- goto handler_attached;
- }
- }
-
- if( request_irq(dev->irq, sbni_interrupt, IRQF_SHARED, dev->name, dev) ) {
- netdev_err(dev, "unable to get IRQ %d\n", dev->irq);
- return -EAGAIN;
- }
-
-handler_attached:
-
- spin_lock( &nl->lock );
- memset( &dev->stats, 0, sizeof(struct net_device_stats) );
- memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
-
- card_start( dev );
-
- netif_start_queue( dev );
-
- /* set timer watchdog */
- nl->watchdog_dev = dev;
- timer_setup(w, sbni_watchdog, 0);
- w->expires = jiffies + SBNI_TIMEOUT;
- add_timer( w );
-
- spin_unlock( &nl->lock );
- return 0;
-}
-
-
-static int
-sbni_close( struct net_device *dev )
-{
- struct net_local *nl = netdev_priv(dev);
-
- if( nl->second && nl->second->flags & IFF_UP ) {
- netdev_notice(dev, "Secondary channel (%s) is active!\n",
- nl->second->name);
- return -EBUSY;
- }
-
-#ifdef CONFIG_SBNI_MULTILINE
- if( nl->state & FL_SLAVE )
- emancipate( dev );
- else
- while( nl->link ) /* it's master device! */
- emancipate( nl->link );
-#endif
-
- spin_lock( &nl->lock );
-
- nl->second = NULL;
- drop_xmit_queue( dev );
- netif_stop_queue( dev );
-
- del_timer( &nl->watchdog );
-
- outb( 0, dev->base_addr + CSR0 );
-
- if( !(nl->state & FL_SECONDARY) )
- free_irq( dev->irq, dev );
- nl->state &= FL_SECONDARY;
-
- spin_unlock( &nl->lock );
- return 0;
-}
-
-
-/*
- Valid combinations in CSR0 (for probing):
-
- VALID_DECODER 0000,0011,1011,1010
-
- ; 0 ; -
- TR_REQ ; 1 ; +
- TR_RDY ; 2 ; -
- TR_RDY TR_REQ ; 3 ; +
- BU_EMP ; 4 ; +
- BU_EMP TR_REQ ; 5 ; +
- BU_EMP TR_RDY ; 6 ; -
- BU_EMP TR_RDY TR_REQ ; 7 ; +
- RC_RDY ; 8 ; +
- RC_RDY TR_REQ ; 9 ; +
- RC_RDY TR_RDY ; 10 ; -
- RC_RDY TR_RDY TR_REQ ; 11 ; -
- RC_RDY BU_EMP ; 12 ; -
- RC_RDY BU_EMP TR_REQ ; 13 ; -
- RC_RDY BU_EMP TR_RDY ; 14 ; -
- RC_RDY BU_EMP TR_RDY TR_REQ ; 15 ; -
-*/
-
-#define VALID_DECODER (2 + 8 + 0x10 + 0x20 + 0x80 + 0x100 + 0x200)
-
-
-static int
-sbni_card_probe( unsigned long ioaddr )
-{
- unsigned char csr0;
-
- csr0 = inb( ioaddr + CSR0 );
- if( csr0 != 0xff && csr0 != 0x00 ) {
- csr0 &= ~EN_INT;
- if( csr0 & BU_EMP )
- csr0 |= EN_INT;
-
- if( VALID_DECODER & (1 << (csr0 >> 4)) )
- return 0;
- }
-
- return -ENODEV;
-}
-
-/* -------------------------------------------------------------------------- */
-
-static int
-sbni_siocdevprivate(struct net_device *dev, struct ifreq *ifr, void __user *data, int cmd)
-{
- struct net_local *nl = netdev_priv(dev);
- struct sbni_flags flags;
- int error = 0;
-
-#ifdef CONFIG_SBNI_MULTILINE
- struct net_device *slave_dev;
- char slave_name[ 8 ];
-#endif
-
- switch( cmd ) {
- case SIOCDEVGETINSTATS :
- if (copy_to_user(data, &nl->in_stats,
- sizeof(struct sbni_in_stats)))
- error = -EFAULT;
- break;
-
- case SIOCDEVRESINSTATS :
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
- break;
-
- case SIOCDEVGHWSTATE :
- flags.mac_addr = *(u32 *)(dev->dev_addr + 3);
- flags.rate = nl->csr1.rate;
- flags.slow_mode = (nl->state & FL_SLOW_MODE) != 0;
- flags.rxl = nl->cur_rxl_index;
- flags.fixed_rxl = nl->delta_rxl == 0;
-
- if (copy_to_user(data, &flags, sizeof(flags)))
- error = -EFAULT;
- break;
-
- case SIOCDEVSHWSTATE :
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- spin_lock( &nl->lock );
- flags = *(struct sbni_flags*) &ifr->ifr_ifru;
- if( flags.fixed_rxl ) {
- nl->delta_rxl = 0;
- nl->cur_rxl_index = flags.rxl;
- } else {
- nl->delta_rxl = DEF_RXL_DELTA;
- nl->cur_rxl_index = DEF_RXL;
- }
-
- nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
- nl->csr1.rate = flags.rate;
- outb( *(u8 *)&nl->csr1 | PR_RES, dev->base_addr + CSR1 );
- spin_unlock( &nl->lock );
- break;
-
-#ifdef CONFIG_SBNI_MULTILINE
-
- case SIOCDEVENSLAVE :
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- if (copy_from_user(slave_name, data, sizeof(slave_name)))
- return -EFAULT;
- slave_dev = dev_get_by_name(&init_net, slave_name );
- if( !slave_dev || !(slave_dev->flags & IFF_UP) ) {
- netdev_err(dev, "trying to enslave non-active device %s\n",
- slave_name);
- if (slave_dev)
- dev_put(slave_dev);
- return -EPERM;
- }
-
- return enslave( dev, slave_dev );
-
- case SIOCDEVEMANSIPATE :
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- return emancipate( dev );
-
-#endif /* CONFIG_SBNI_MULTILINE */
-
- default :
- return -EOPNOTSUPP;
- }
-
- return error;
-}
-
-
-#ifdef CONFIG_SBNI_MULTILINE
-
-static int
-enslave( struct net_device *dev, struct net_device *slave_dev )
-{
- struct net_local *nl = netdev_priv(dev);
- struct net_local *snl = netdev_priv(slave_dev);
-
- if( nl->state & FL_SLAVE ) /* This isn't master or free device */
- return -EBUSY;
-
- if( snl->state & FL_SLAVE ) /* That was already enslaved */
- return -EBUSY;
-
- spin_lock( &nl->lock );
- spin_lock( &snl->lock );
-
- /* append to list */
- snl->link = nl->link;
- nl->link = slave_dev;
- snl->master = dev;
- snl->state |= FL_SLAVE;
-
- /* Summary statistics of MultiLine operation will be stored
- in master's counters */
- memset( &slave_dev->stats, 0, sizeof(struct net_device_stats) );
- netif_stop_queue( slave_dev );
- netif_wake_queue( dev ); /* Now we are able to transmit */
-
- spin_unlock( &snl->lock );
- spin_unlock( &nl->lock );
- netdev_notice(dev, "slave device (%s) attached\n", slave_dev->name);
- return 0;
-}
-
-
-static int
-emancipate( struct net_device *dev )
-{
- struct net_local *snl = netdev_priv(dev);
- struct net_device *p = snl->master;
- struct net_local *nl = netdev_priv(p);
-
- if( !(snl->state & FL_SLAVE) )
- return -EINVAL;
-
- spin_lock( &nl->lock );
- spin_lock( &snl->lock );
- drop_xmit_queue( dev );
-
- /* exclude from list */
- for(;;) { /* must be in list */
- struct net_local *t = netdev_priv(p);
- if( t->link == dev ) {
- t->link = snl->link;
- break;
- }
- p = t->link;
- }
-
- snl->link = NULL;
- snl->master = dev;
- snl->state &= ~FL_SLAVE;
-
- netif_start_queue( dev );
-
- spin_unlock( &snl->lock );
- spin_unlock( &nl->lock );
-
- dev_put( dev );
- return 0;
-}
-
-#endif
-
-static void
-set_multicast_list( struct net_device *dev )
-{
- return; /* sbni always operate in promiscuos mode */
-}
-
-
-#ifdef MODULE
-module_param_hw_array(io, int, ioport, NULL, 0);
-module_param_hw_array(irq, int, irq, NULL, 0);
-module_param_array(baud, int, NULL, 0);
-module_param_array(rxl, int, NULL, 0);
-module_param_array(mac, int, NULL, 0);
-module_param(skip_pci_probe, bool, 0);
-
-MODULE_LICENSE("GPL");
-
-
-int __init init_module( void )
-{
- struct net_device *dev;
- int err;
-
- while( num < SBNI_MAX_NUM_CARDS ) {
- dev = alloc_netdev(sizeof(struct net_local), "sbni%d",
- NET_NAME_UNKNOWN, sbni_devsetup);
- if( !dev)
- break;
-
- sprintf( dev->name, "sbni%d", num );
-
- err = sbni_init(dev);
- if (err) {
- free_netdev(dev);
- break;
- }
-
- if( register_netdev( dev ) ) {
- release_region( dev->base_addr, SBNI_IO_EXTENT );
- free_netdev( dev );
- break;
- }
- }
-
- return *sbni_cards ? 0 : -ENODEV;
-}
-
-void
-cleanup_module(void)
-{
- int i;
-
- for (i = 0; i < SBNI_MAX_NUM_CARDS; ++i) {
- struct net_device *dev = sbni_cards[i];
- if (dev != NULL) {
- unregister_netdev(dev);
- release_region(dev->base_addr, SBNI_IO_EXTENT);
- free_netdev(dev);
- }
- }
-}
-
-#else /* MODULE */
-
-static int __init
-sbni_setup( char *p )
-{
- int n, parm;
-
- if( *p++ != '(' )
- goto bad_param;
-
- for( n = 0, parm = 0; *p && n < 8; ) {
- (*dest[ parm ])[ n ] = simple_strtoul( p, &p, 0 );
- if( !*p || *p == ')' )
- return 1;
- if( *p == ';' ) {
- ++p;
- ++n;
- parm = 0;
- } else if( *p++ != ',' ) {
- break;
- } else {
- if( ++parm >= 5 )
- break;
- }
- }
-bad_param:
- pr_err("Error in sbni kernel parameter!\n");
- return 0;
-}
-
-__setup( "sbni=", sbni_setup );
-
-#endif /* MODULE */
-
-/* -------------------------------------------------------------------------- */
-
-static u32
-calc_crc32( u32 crc, u8 *p, u32 len )
-{
- while( len-- )
- crc = CRC32( *p++, crc );
-
- return crc;
-}
-
-static u32 crc32tab[] __attribute__ ((aligned(8))) = {
- 0xD202EF8D, 0xA505DF1B, 0x3C0C8EA1, 0x4B0BBE37,
- 0xD56F2B94, 0xA2681B02, 0x3B614AB8, 0x4C667A2E,
- 0xDCD967BF, 0xABDE5729, 0x32D70693, 0x45D03605,
- 0xDBB4A3A6, 0xACB39330, 0x35BAC28A, 0x42BDF21C,
- 0xCFB5FFE9, 0xB8B2CF7F, 0x21BB9EC5, 0x56BCAE53,
- 0xC8D83BF0, 0xBFDF0B66, 0x26D65ADC, 0x51D16A4A,
- 0xC16E77DB, 0xB669474D, 0x2F6016F7, 0x58672661,
- 0xC603B3C2, 0xB1048354, 0x280DD2EE, 0x5F0AE278,
- 0xE96CCF45, 0x9E6BFFD3, 0x0762AE69, 0x70659EFF,
- 0xEE010B5C, 0x99063BCA, 0x000F6A70, 0x77085AE6,
- 0xE7B74777, 0x90B077E1, 0x09B9265B, 0x7EBE16CD,
- 0xE0DA836E, 0x97DDB3F8, 0x0ED4E242, 0x79D3D2D4,
- 0xF4DBDF21, 0x83DCEFB7, 0x1AD5BE0D, 0x6DD28E9B,
- 0xF3B61B38, 0x84B12BAE, 0x1DB87A14, 0x6ABF4A82,
- 0xFA005713, 0x8D076785, 0x140E363F, 0x630906A9,
- 0xFD6D930A, 0x8A6AA39C, 0x1363F226, 0x6464C2B0,
- 0xA4DEAE1D, 0xD3D99E8B, 0x4AD0CF31, 0x3DD7FFA7,
- 0xA3B36A04, 0xD4B45A92, 0x4DBD0B28, 0x3ABA3BBE,
- 0xAA05262F, 0xDD0216B9, 0x440B4703, 0x330C7795,
- 0xAD68E236, 0xDA6FD2A0, 0x4366831A, 0x3461B38C,
- 0xB969BE79, 0xCE6E8EEF, 0x5767DF55, 0x2060EFC3,
- 0xBE047A60, 0xC9034AF6, 0x500A1B4C, 0x270D2BDA,
- 0xB7B2364B, 0xC0B506DD, 0x59BC5767, 0x2EBB67F1,
- 0xB0DFF252, 0xC7D8C2C4, 0x5ED1937E, 0x29D6A3E8,
- 0x9FB08ED5, 0xE8B7BE43, 0x71BEEFF9, 0x06B9DF6F,
- 0x98DD4ACC, 0xEFDA7A5A, 0x76D32BE0, 0x01D41B76,
- 0x916B06E7, 0xE66C3671, 0x7F6567CB, 0x0862575D,
- 0x9606C2FE, 0xE101F268, 0x7808A3D2, 0x0F0F9344,
- 0x82079EB1, 0xF500AE27, 0x6C09FF9D, 0x1B0ECF0B,
- 0x856A5AA8, 0xF26D6A3E, 0x6B643B84, 0x1C630B12,
- 0x8CDC1683, 0xFBDB2615, 0x62D277AF, 0x15D54739,
- 0x8BB1D29A, 0xFCB6E20C, 0x65BFB3B6, 0x12B88320,
- 0x3FBA6CAD, 0x48BD5C3B, 0xD1B40D81, 0xA6B33D17,
- 0x38D7A8B4, 0x4FD09822, 0xD6D9C998, 0xA1DEF90E,
- 0x3161E49F, 0x4666D409, 0xDF6F85B3, 0xA868B525,
- 0x360C2086, 0x410B1010, 0xD80241AA, 0xAF05713C,
- 0x220D7CC9, 0x550A4C5F, 0xCC031DE5, 0xBB042D73,
- 0x2560B8D0, 0x52678846, 0xCB6ED9FC, 0xBC69E96A,
- 0x2CD6F4FB, 0x5BD1C46D, 0xC2D895D7, 0xB5DFA541,
- 0x2BBB30E2, 0x5CBC0074, 0xC5B551CE, 0xB2B26158,
- 0x04D44C65, 0x73D37CF3, 0xEADA2D49, 0x9DDD1DDF,
- 0x03B9887C, 0x74BEB8EA, 0xEDB7E950, 0x9AB0D9C6,
- 0x0A0FC457, 0x7D08F4C1, 0xE401A57B, 0x930695ED,
- 0x0D62004E, 0x7A6530D8, 0xE36C6162, 0x946B51F4,
- 0x19635C01, 0x6E646C97, 0xF76D3D2D, 0x806A0DBB,
- 0x1E0E9818, 0x6909A88E, 0xF000F934, 0x8707C9A2,
- 0x17B8D433, 0x60BFE4A5, 0xF9B6B51F, 0x8EB18589,
- 0x10D5102A, 0x67D220BC, 0xFEDB7106, 0x89DC4190,
- 0x49662D3D, 0x3E611DAB, 0xA7684C11, 0xD06F7C87,
- 0x4E0BE924, 0x390CD9B2, 0xA0058808, 0xD702B89E,
- 0x47BDA50F, 0x30BA9599, 0xA9B3C423, 0xDEB4F4B5,
- 0x40D06116, 0x37D75180, 0xAEDE003A, 0xD9D930AC,
- 0x54D13D59, 0x23D60DCF, 0xBADF5C75, 0xCDD86CE3,
- 0x53BCF940, 0x24BBC9D6, 0xBDB2986C, 0xCAB5A8FA,
- 0x5A0AB56B, 0x2D0D85FD, 0xB404D447, 0xC303E4D1,
- 0x5D677172, 0x2A6041E4, 0xB369105E, 0xC46E20C8,
- 0x72080DF5, 0x050F3D63, 0x9C066CD9, 0xEB015C4F,
- 0x7565C9EC, 0x0262F97A, 0x9B6BA8C0, 0xEC6C9856,
- 0x7CD385C7, 0x0BD4B551, 0x92DDE4EB, 0xE5DAD47D,
- 0x7BBE41DE, 0x0CB97148, 0x95B020F2, 0xE2B71064,
- 0x6FBF1D91, 0x18B82D07, 0x81B17CBD, 0xF6B64C2B,
- 0x68D2D988, 0x1FD5E91E, 0x86DCB8A4, 0xF1DB8832,
- 0x616495A3, 0x1663A535, 0x8F6AF48F, 0xF86DC419,
- 0x660951BA, 0x110E612C, 0x88073096, 0xFF000000
-};
-
projects / platform / kernel / linux-starfive.git / commitdiff