X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fchar%2Fsynclinkmp.c;h=5648ed35562f0f6323a6e7655a162ef99dae669e;hb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;hp=1361ea04151c39adc6e183c5f1ae4828d961071b;hpb=a2c21200f1c81b08cb55e417b68150bba439b646;p=linux-2.6.git diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index 1361ea041..5648ed355 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -1,5 +1,5 @@ /* - * $Id: synclinkmp.c,v 4.22 2004/06/03 14:50:10 paulkf Exp $ + * $Id: synclinkmp.c,v 4.29 2004/08/27 20:06:41 paulkf Exp $ * * Device driver for Microgate SyncLink Multiport * high speed multiprotocol serial adapter. @@ -67,13 +67,10 @@ #include #include #include +#include -#ifdef CONFIG_SYNCLINK_SYNCPPP_MODULE -#define CONFIG_SYNCLINK_SYNCPPP 1 -#endif - -#ifdef CONFIG_SYNCLINK_SYNCPPP -#include +#ifdef CONFIG_HDLC_MODULE +#define CONFIG_HDLC 1 #endif #define GET_USER(error,value,addr) error = get_user(value,addr) @@ -284,12 +281,11 @@ typedef struct _synclinkmp_info { int netcount; int dosyncppp; spinlock_t netlock; -#ifdef CONFIG_SYNCLINK_SYNCPPP - struct ppp_device pppdev; - char netname[10]; + +#ifdef CONFIG_HDLC struct net_device *netdev; - struct net_device_stats netstats; #endif + } SLMP_INFO; #define MGSL_MAGIC 0x5401 @@ -361,12 +357,7 @@ typedef struct _synclinkmp_info { #define TMCS 0x64 #define TEPR 0x65 -/* - * FIXME: DAR here clashed with asm-ppc/reg.h and asm-sh/.../dma.h - */ -#undef DAR /* DMA Controller Register macros */ -#define DAR 0x80 #define DARL 0x80 #define DARH 0x81 #define DARB 0x82 @@ -462,8 +453,6 @@ typedef struct _synclinkmp_info { #define CRCE BIT2 -#define jiffies_from_ms(a) ((((a) * HZ)/1000)+1) - /* * Global linked list of SyncLink devices */ @@ -498,7 +487,7 @@ MODULE_PARM(maxframe,"1-" __MODULE_STRING(MAX_DEVICES) "i"); MODULE_PARM(dosyncppp,"1-" __MODULE_STRING(MAX_DEVICES) "i"); static char *driver_name = "SyncLink MultiPort driver"; -static char *driver_version = "$Revision: 4.22 $"; +static char *driver_version = "$Revision: 4.29 $"; static int synclinkmp_init_one(struct pci_dev *dev,const struct pci_device_id *ent); static void synclinkmp_remove_one(struct pci_dev *dev); @@ -524,10 +513,6 @@ static struct tty_driver *serial_driver; /* number of characters left in xmit buffer before we ask for more */ #define WAKEUP_CHARS 256 -#ifndef MIN -#define MIN(a,b) ((a) < (b) ? (a) : (b)) -#endif - /* tty callbacks */ @@ -553,20 +538,12 @@ static void throttle(struct tty_struct * tty); static void unthrottle(struct tty_struct * tty); static void set_break(struct tty_struct *tty, int break_state); -/* sppp support and callbacks */ - -#ifdef CONFIG_SYNCLINK_SYNCPPP -static void sppp_init(SLMP_INFO *info); -static void sppp_delete(SLMP_INFO *info); -static void sppp_rx_done(SLMP_INFO *info, char *buf, int size); -static void sppp_tx_done(SLMP_INFO *info); - -static int sppp_cb_open(struct net_device *d); -static int sppp_cb_close(struct net_device *d); -static int sppp_cb_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); -static int sppp_cb_tx(struct sk_buff *skb, struct net_device *dev); -static void sppp_cb_tx_timeout(struct net_device *dev); -static struct net_device_stats *sppp_cb_net_stats(struct net_device *dev); +#ifdef CONFIG_HDLC +#define dev_to_port(D) (dev_to_hdlc(D)->priv) +static void hdlcdev_tx_done(SLMP_INFO *info); +static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size); +static int hdlcdev_init(SLMP_INFO *info); +static void hdlcdev_exit(SLMP_INFO *info); #endif /* ioctl handlers */ @@ -668,7 +645,7 @@ static unsigned char tx_active_fifo_level = 16; // tx request FIFO activation le static unsigned char tx_negate_fifo_level = 32; // tx request FIFO negation level in bytes static u32 misc_ctrl_value = 0x007e4040; -static u32 lcr1_brdr_value = 0x0080002d; +static u32 lcr1_brdr_value = 0x00800029; static u32 read_ahead_count = 8; @@ -722,6 +699,29 @@ static inline int sanity_check(SLMP_INFO *info, return 0; } +/** + * line discipline callback wrappers + * + * The wrappers maintain line discipline references + * while calling into the line discipline. + * + * ldisc_receive_buf - pass receive data to line discipline + */ + +static void ldisc_receive_buf(struct tty_struct *tty, + const __u8 *data, char *flags, int count) +{ + struct tty_ldisc *ld; + if (!tty) + return; + ld = tty_ldisc_ref(tty); + if (ld) { + if (ld->receive_buf) + ld->receive_buf(tty, data, flags, count); + tty_ldisc_deref(ld); + } +} + /* tty callbacks */ /* Called when a port is opened. Init and enable port. @@ -800,7 +800,7 @@ static int open(struct tty_struct *tty, struct file *filp) cleanup: if (retval) { if (tty->count == 1) - info->tty = NULL;/* tty layer will release tty struct */ + info->tty = NULL; /* tty layer will release tty struct */ if(info->count) info->count--; } @@ -869,8 +869,7 @@ static void close(struct tty_struct *tty, struct file *filp) if (tty->driver->flush_buffer) tty->driver->flush_buffer(tty); - if (tty->ldisc.flush_buffer) - tty->ldisc.flush_buffer(tty); + tty_ldisc_flush(tty); shutdown(info); @@ -1017,8 +1016,8 @@ static int write(struct tty_struct *tty, int from_user, } for (;;) { - c = MIN(count, - MIN(info->max_frame_size - info->tx_count - 1, + c = min_t(int, count, + min(info->max_frame_size - info->tx_count - 1, info->max_frame_size - info->tx_put)); if (c <= 0) break; @@ -1161,7 +1160,7 @@ static void wait_until_sent(struct tty_struct *tty, int timeout) char_time = 1; if (timeout) - char_time = MIN(char_time, timeout); + char_time = min_t(unsigned long, char_time, timeout); if ( info->params.mode == MGSL_MODE_HDLC ) { while (info->tx_active) { @@ -1275,9 +1274,7 @@ static void flush_buffer(struct tty_struct *tty) spin_unlock_irqrestore(&info->lock,flags); wake_up_interruptible(&tty->write_wait); - if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - tty->ldisc.write_wakeup) - (tty->ldisc.write_wakeup)(tty); + tty_wakeup(tty); } /* throttle (stop) transmitter @@ -1627,79 +1624,125 @@ static void set_break(struct tty_struct *tty, int break_state) spin_unlock_irqrestore(&info->lock,flags); } -#ifdef CONFIG_SYNCLINK_SYNCPPP +#ifdef CONFIG_HDLC -/* syncppp support and callbacks */ - -static void cb_setup(struct net_device *dev) -{ - dev->open = sppp_cb_open; - dev->stop = sppp_cb_close; - dev->hard_start_xmit = sppp_cb_tx; - dev->do_ioctl = sppp_cb_ioctl; - dev->get_stats = sppp_cb_net_stats; - dev->tx_timeout = sppp_cb_tx_timeout; - dev->watchdog_timeo = 10*HZ; -} - -static void sppp_init(SLMP_INFO *info) +/** + * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) + * set encoding and frame check sequence (FCS) options + * + * dev pointer to network device structure + * encoding serial encoding setting + * parity FCS setting + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, + unsigned short parity) { - struct net_device *d; + SLMP_INFO *info = dev_to_port(dev); + unsigned char new_encoding; + unsigned short new_crctype; - sprintf(info->netname,"mgslm%dp%d",info->adapter_num,info->port_num); + /* return error if TTY interface open */ + if (info->count) + return -EBUSY; - d = alloc_netdev(0, info->netname, cb_setup); - if (!d) { - printk(KERN_WARNING "%s: alloc_netdev failed.\n", - info->netname); - return; + switch (encoding) + { + case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; + case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; + case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; + case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; + case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; + default: return -EINVAL; } - info->if_ptr = &info->pppdev; - info->netdev = info->pppdev.dev = d; - - d->irq = info->irq_level; - d->priv = info; + switch (parity) + { + case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; + case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; + case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; + default: return -EINVAL; + } - sppp_attach(&info->pppdev); - cb_setup(d); + info->params.encoding = new_encoding; + info->params.crc_type = new_crctype;; - if (register_netdev(d)) { - printk(KERN_WARNING "%s: register_netdev failed.\n", d->name); - sppp_detach(info->netdev); - info->netdev = NULL; - info->pppdev.dev = NULL; - free_netdev(d); - return; - } + /* if network interface up, reprogram hardware */ + if (info->netcount) + program_hw(info); - if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_init(%s)\n",info->netname); + return 0; } -static void sppp_delete(SLMP_INFO *info) +/** + * called by generic HDLC layer to send frame + * + * skb socket buffer containing HDLC frame + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev) { + SLMP_INFO *info = dev_to_port(dev); + struct net_device_stats *stats = hdlc_stats(dev); + unsigned long flags; + if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_delete(%s)\n",info->netname); - unregister_netdev(info->netdev); - sppp_detach(info->netdev); - free_netdev(info->netdev); - info->netdev = NULL; - info->pppdev.dev = NULL; + printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); + + /* stop sending until this frame completes */ + netif_stop_queue(dev); + + /* copy data to device buffers */ + info->tx_count = skb->len; + tx_load_dma_buffer(info, skb->data, skb->len); + + /* update network statistics */ + stats->tx_packets++; + stats->tx_bytes += skb->len; + + /* done with socket buffer, so free it */ + dev_kfree_skb(skb); + + /* save start time for transmit timeout detection */ + dev->trans_start = jiffies; + + /* start hardware transmitter if necessary */ + spin_lock_irqsave(&info->lock,flags); + if (!info->tx_active) + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + + return 0; } -static int sppp_cb_open(struct net_device *d) +/** + * called by network layer when interface enabled + * claim resources and initialize hardware + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_open(struct net_device *dev) { - SLMP_INFO *info = d->priv; - int err; + SLMP_INFO *info = dev_to_port(dev); + int rc; unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_cb_open(%s)\n",info->netname); + printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); + + /* generic HDLC layer open processing */ + if ((rc = hdlc_open(dev))) + return rc; + /* arbitrate between network and tty opens */ spin_lock_irqsave(&info->netlock, flags); if (info->count != 0 || info->netcount != 0) { - printk(KERN_WARNING "%s: sppp_cb_open returning busy\n", info->netname); + printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); spin_unlock_irqrestore(&info->netlock, flags); return -EBUSY; } @@ -1707,141 +1750,300 @@ static int sppp_cb_open(struct net_device *d) spin_unlock_irqrestore(&info->netlock, flags); /* claim resources and init adapter */ - if ((err = startup(info)) != 0) - goto open_fail; - - /* allow syncppp module to do open processing */ - if ((err = sppp_open(d)) != 0) { - shutdown(info); - goto open_fail; + if ((rc = startup(info)) != 0) { + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + return rc; } + /* assert DTR and RTS, apply hardware settings */ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; program_hw(info); - d->trans_start = jiffies; - netif_start_queue(d); - return 0; + /* enable network layer transmit */ + dev->trans_start = jiffies; + netif_start_queue(dev); -open_fail: - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - return err; + /* inform generic HDLC layer of current DCD status */ + spin_lock_irqsave(&info->lock, flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock, flags); + hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, dev); + + return 0; } -static void sppp_cb_tx_timeout(struct net_device *dev) +/** + * called by network layer when interface is disabled + * shutdown hardware and release resources + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_close(struct net_device *dev) { - SLMP_INFO *info = dev->priv; + SLMP_INFO *info = dev_to_port(dev); unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_tx_timeout(%s)\n",info->netname); + printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); - info->netstats.tx_errors++; - info->netstats.tx_aborted_errors++; + netif_stop_queue(dev); - spin_lock_irqsave(&info->lock,flags); - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); + /* shutdown adapter and release resources */ + shutdown(info); - netif_wake_queue(dev); + hdlc_close(dev); + + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + + return 0; } -static int sppp_cb_tx(struct sk_buff *skb, struct net_device *dev) +/** + * called by network layer to process IOCTL call to network device + * + * dev pointer to network device structure + * ifr pointer to network interface request structure + * cmd IOCTL command code + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { - SLMP_INFO *info = dev->priv; - unsigned long flags; + const size_t size = sizeof(sync_serial_settings); + sync_serial_settings new_line; + sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; + SLMP_INFO *info = dev_to_port(dev); + unsigned int flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_tx(%s)\n",info->netname); + printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); - netif_stop_queue(dev); + /* return error if TTY interface open */ + if (info->count) + return -EBUSY; - info->tx_count = skb->len; - tx_load_dma_buffer(info, skb->data, skb->len); - info->netstats.tx_packets++; - info->netstats.tx_bytes += skb->len; - dev_kfree_skb(skb); + if (cmd != SIOCWANDEV) + return hdlc_ioctl(dev, ifr, cmd); - dev->trans_start = jiffies; + switch(ifr->ifr_settings.type) { + case IF_GET_IFACE: /* return current sync_serial_settings */ - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_active) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); + ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; + if (ifr->ifr_settings.size < size) { + ifr->ifr_settings.size = size; /* data size wanted */ + return -ENOBUFS; + } - return 0; + flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + + switch (flags){ + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; + case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; + default: new_line.clock_type = CLOCK_DEFAULT; + } + + new_line.clock_rate = info->params.clock_speed; + new_line.loopback = info->params.loopback ? 1:0; + + if (copy_to_user(line, &new_line, size)) + return -EFAULT; + return 0; + + case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ + + if(!capable(CAP_NET_ADMIN)) + return -EPERM; + if (copy_from_user(&new_line, line, size)) + return -EFAULT; + + switch (new_line.clock_type) + { + case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; + case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; + case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; + case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; + case CLOCK_DEFAULT: flags = info->params.flags & + (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; + default: return -EINVAL; + } + + if (new_line.loopback != 0 && new_line.loopback != 1) + return -EINVAL; + + info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + info->params.flags |= flags; + + info->params.loopback = new_line.loopback; + + if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) + info->params.clock_speed = new_line.clock_rate; + else + info->params.clock_speed = 0; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + program_hw(info); + return 0; + + default: + return hdlc_ioctl(dev, ifr, cmd); + } } -static int sppp_cb_close(struct net_device *d) +/** + * called by network layer when transmit timeout is detected + * + * dev pointer to network device structure + */ +static void hdlcdev_tx_timeout(struct net_device *dev) { - SLMP_INFO *info = d->priv; + SLMP_INFO *info = dev_to_port(dev); + struct net_device_stats *stats = hdlc_stats(dev); unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_cb_close(%s)\n",info->netname); + printk("hdlcdev_tx_timeout(%s)\n",dev->name); - /* shutdown adapter and release resources */ - shutdown(info); + stats->tx_errors++; + stats->tx_aborted_errors++; - /* allow syncppp to do close processing */ - sppp_close(d); - netif_stop_queue(d); + spin_lock_irqsave(&info->lock,flags); + tx_stop(info); + spin_unlock_irqrestore(&info->lock,flags); - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - return 0; + netif_wake_queue(dev); +} + +/** + * called by device driver when transmit completes + * reenable network layer transmit if stopped + * + * info pointer to device instance information + */ +static void hdlcdev_tx_done(SLMP_INFO *info) +{ + if (netif_queue_stopped(info->netdev)) + netif_wake_queue(info->netdev); } -static void sppp_rx_done(SLMP_INFO *info, char *buf, int size) +/** + * called by device driver when frame received + * pass frame to network layer + * + * info pointer to device instance information + * buf pointer to buffer contianing frame data + * size count of data bytes in buf + */ +static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size) { struct sk_buff *skb = dev_alloc_skb(size); + struct net_device *dev = info->netdev; + struct net_device_stats *stats = hdlc_stats(dev); + if (debug_level >= DEBUG_LEVEL_INFO) - printk("sppp_rx_done(%s)\n",info->netname); + printk("hdlcdev_rx(%s)\n",dev->name); + if (skb == NULL) { - printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", - info->netname); - info->netstats.rx_dropped++; + printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name); + stats->rx_dropped++; return; } memcpy(skb_put(skb, size),buf,size); - skb->protocol = htons(ETH_P_WAN_PPP); - skb->dev = info->netdev; - skb->mac.raw = skb->data; - info->netstats.rx_packets++; - info->netstats.rx_bytes += size; + skb->dev = info->netdev; + skb->mac.raw = skb->data; + skb->protocol = hdlc_type_trans(skb, skb->dev); + + stats->rx_packets++; + stats->rx_bytes += size; + netif_rx(skb); - info->netdev->trans_start = jiffies; -} -static void sppp_tx_done(SLMP_INFO *info) -{ - if (netif_queue_stopped(info->netdev)) - netif_wake_queue(info->netdev); + info->netdev->last_rx = jiffies; } -static struct net_device_stats *sppp_cb_net_stats(struct net_device *dev) +/** + * called by device driver when adding device instance + * do generic HDLC initialization + * + * info pointer to device instance information + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_init(SLMP_INFO *info) { - SLMP_INFO *info = dev->priv; - if (debug_level >= DEBUG_LEVEL_INFO) - printk("net_stats(%s)\n",info->netname); - return &info->netstats; + int rc; + struct net_device *dev; + hdlc_device *hdlc; + + /* allocate and initialize network and HDLC layer objects */ + + if (!(dev = alloc_hdlcdev(info))) { + printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); + return -ENOMEM; + } + + /* for network layer reporting purposes only */ + dev->mem_start = info->phys_sca_base; + dev->mem_end = info->phys_sca_base + SCA_BASE_SIZE - 1; + dev->irq = info->irq_level; + + /* network layer callbacks and settings */ + dev->do_ioctl = hdlcdev_ioctl; + dev->open = hdlcdev_open; + dev->stop = hdlcdev_close; + dev->tx_timeout = hdlcdev_tx_timeout; + dev->watchdog_timeo = 10*HZ; + dev->tx_queue_len = 50; + + /* generic HDLC layer callbacks and settings */ + hdlc = dev_to_hdlc(dev); + hdlc->attach = hdlcdev_attach; + hdlc->xmit = hdlcdev_xmit; + + /* register objects with HDLC layer */ + if ((rc = register_hdlc_device(dev))) { + printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); + free_netdev(dev); + return rc; + } + + info->netdev = dev; + return 0; } -static int sppp_cb_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +/** + * called by device driver when removing device instance + * do generic HDLC cleanup + * + * info pointer to device instance information + */ +static void hdlcdev_exit(SLMP_INFO *info) { - SLMP_INFO *info = dev->priv; - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):ioctl %s cmd=%08X\n", __FILE__,__LINE__, - info->netname, cmd ); - return sppp_do_ioctl(dev, ifr, cmd); + unregister_hdlc_device(info->netdev); + free_netdev(info->netdev); + info->netdev = NULL; } -#endif /* ifdef CONFIG_SYNCLINK_SYNCPPP */ +#endif /* CONFIG_HDLC */ /* Return next bottom half action to perform. @@ -1941,13 +2143,7 @@ void bh_transmit(SLMP_INFO *info) __FILE__,__LINE__,info->device_name); if (tty) { - if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - tty->ldisc.write_wakeup) { - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s calling ldisc.write_wakeup\n", - __FILE__,__LINE__,info->device_name); - (tty->ldisc.write_wakeup)(tty); - } + tty_wakeup(tty); wake_up_interruptible(&tty->write_wait); } } @@ -1994,16 +2190,15 @@ void isr_rxint(SLMP_INFO * info) { struct tty_struct *tty = info->tty; struct mgsl_icount *icount = &info->icount; - unsigned char status = read_reg(info, SR1); - unsigned char status2 = read_reg(info, SR2); + unsigned char status = read_reg(info, SR1) & info->ie1_value & (FLGD + IDLD + CDCD + BRKD); + unsigned char status2 = read_reg(info, SR2) & info->ie2_value & OVRN; /* clear status bits */ - if ( status & (FLGD + IDLD + CDCD + BRKD) ) - write_reg(info, SR1, - (unsigned char)(status & (FLGD + IDLD + CDCD + BRKD))); + if (status) + write_reg(info, SR1, status); - if ( status2 & OVRN ) - write_reg(info, SR2, (unsigned char)(status2 & OVRN)); + if (status2) + write_reg(info, SR2, status2); if ( debug_level >= DEBUG_LEVEL_ISR ) printk("%s(%d):%s isr_rxint status=%02X %02x\n", @@ -2140,15 +2335,22 @@ void isr_txeom(SLMP_INFO * info, unsigned char status) printk("%s(%d):%s isr_txeom status=%02x\n", __FILE__,__LINE__,info->device_name,status); - /* disable and clear MSCI interrupts */ - info->ie1_value &= ~(IDLE + UDRN); - write_reg(info, IE1, info->ie1_value); - write_reg(info, SR1, (unsigned char)(UDRN + IDLE)); - write_reg(info, TXDMA + DIR, 0x00); /* disable Tx DMA IRQs */ write_reg(info, TXDMA + DSR, 0xc0); /* clear IRQs and disable DMA */ write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ + if (status & UDRN) { + write_reg(info, CMD, TXRESET); + write_reg(info, CMD, TXENABLE); + } else + write_reg(info, CMD, TXBUFCLR); + + /* disable and clear tx interrupts */ + info->ie0_value &= ~TXRDYE; + info->ie1_value &= ~(IDLE + UDRN); + write_reg16(info, IE0, (unsigned short)((info->ie1_value << 8) + info->ie0_value)); + write_reg(info, SR1, (unsigned char)(UDRN + IDLE)); + if ( info->tx_active ) { if (info->params.mode != MGSL_MODE_ASYNC) { if (status & UDRN) @@ -2168,9 +2370,9 @@ void isr_txeom(SLMP_INFO * info, unsigned char status) set_signals(info); } -#ifdef CONFIG_SYNCLINK_SYNCPPP +#ifdef CONFIG_HDLC if (info->netcount) - sppp_tx_done(info); + hdlcdev_tx_done(info); else #endif { @@ -2189,10 +2391,10 @@ void isr_txeom(SLMP_INFO * info, unsigned char status) */ void isr_txint(SLMP_INFO * info) { - unsigned char status = read_reg(info, SR1); + unsigned char status = read_reg(info, SR1) & info->ie1_value & (UDRN + IDLE + CCTS); /* clear status bits */ - write_reg(info, SR1, (unsigned char)(status & (UDRN + IDLE + CCTS))); + write_reg(info, SR1, status); if ( debug_level >= DEBUG_LEVEL_ISR ) printk("%s(%d):%s isr_txint status=%02x\n", @@ -2221,6 +2423,14 @@ void isr_txrdy(SLMP_INFO * info) printk("%s(%d):%s isr_txrdy() tx_count=%d\n", __FILE__,__LINE__,info->device_name,info->tx_count); + if (info->params.mode != MGSL_MODE_ASYNC) { + /* disable TXRDY IRQ, enable IDLE IRQ */ + info->ie0_value &= ~TXRDYE; + info->ie1_value |= IDLE; + write_reg16(info, IE0, (unsigned short)((info->ie1_value << 8) + info->ie0_value)); + return; + } + if (info->tty && (info->tty->stopped || info->tty->hw_stopped)) { tx_stop(info); return; @@ -2275,13 +2485,6 @@ void isr_rxdmaerror(SLMP_INFO * info) void isr_txdmaok(SLMP_INFO * info) { - /* BIT7 = EOT (end of transfer, used for async mode) - * BIT6 = EOM (end of message/frame, used for sync mode) - * - * We don't look at DMA status because only EOT is enabled - * and we always clear and disable all tx DMA IRQs. - */ -// unsigned char dma_status = read_reg(info,TXDMA + DSR) & 0xc0; unsigned char status_reg1 = read_reg(info, SR1); write_reg(info, TXDMA + DIR, 0x00); /* disable Tx DMA IRQs */ @@ -2292,19 +2495,10 @@ void isr_txdmaok(SLMP_INFO * info) printk("%s(%d):%s isr_txdmaok(), status=%02x\n", __FILE__,__LINE__,info->device_name,status_reg1); - /* If transmitter already idle, do end of frame processing, - * otherwise enable interrupt for tx IDLE. - */ - if (status_reg1 & IDLE) - isr_txeom(info, IDLE); - else { - /* disable and clear underrun IRQ, enable IDLE interrupt */ - info->ie1_value |= IDLE; - info->ie1_value &= ~UDRN; - write_reg(info, IE1, info->ie1_value); - - write_reg(info, SR1, UDRN); - } + /* program TXRDY as FIFO empty flag, enable TXRDY IRQ */ + write_reg16(info, TRC0, 0); + info->ie0_value |= TXRDYE; + write_reg(info, IE0, info->ie0_value); } void isr_txdmaerror(SLMP_INFO * info) @@ -2358,12 +2552,12 @@ void isr_io_pin( SLMP_INFO *info, u16 status ) icount->dcd++; if (status & SerialSignal_DCD) { info->input_signal_events.dcd_up++; -#ifdef CONFIG_SYNCLINK_SYNCPPP - if (info->netcount) - sppp_reopen(info->netdev); -#endif } else info->input_signal_events.dcd_down++; +#ifdef CONFIG_HDLC + if (info->netcount) + hdlc_set_carrier(status & SerialSignal_DCD, info->netdev); +#endif } if (status & MISCSTATUS_CTS_LATCHED) { @@ -2577,7 +2771,7 @@ static int startup(SLMP_INFO * info) change_params(info); - info->status_timer.expires = jiffies + jiffies_from_ms(10); + info->status_timer.expires = jiffies + msecs_to_jiffies(10); add_timer(&info->status_timer); if (info->tty) @@ -2988,7 +3182,7 @@ static int wait_mgsl_event(SLMP_INFO * info, int __user *mask_ptr) unsigned char oldval = info->ie1_value; unsigned char newval = oldval + (mask & MgslEvent_ExitHuntMode ? FLGD:0) + - (mask & MgslEvent_IdleReceived ? IDLE:0); + (mask & MgslEvent_IdleReceived ? IDLD:0); if ( oldval != newval ) { info->ie1_value = newval; write_reg(info, IE1, info->ie1_value); @@ -3055,7 +3249,7 @@ static int wait_mgsl_event(SLMP_INFO * info, int __user *mask_ptr) spin_lock_irqsave(&info->lock,flags); if (!waitqueue_active(&info->event_wait_q)) { /* disable enable exit hunt mode/idle rcvd IRQs */ - info->ie1_value &= ~(FLGD|IDLE); + info->ie1_value &= ~(FLGD|IDLD); write_reg(info, IE1, info->ie1_value); } spin_unlock_irqrestore(&info->lock,flags); @@ -3449,9 +3643,10 @@ void free_tmp_rx_buf(SLMP_INFO *info) int claim_resources(SLMP_INFO *info) { - if (request_mem_region(info->phys_memory_base,0x40000,"synclinkmp") == NULL) { + if (request_mem_region(info->phys_memory_base,SCA_MEM_SIZE,"synclinkmp") == NULL) { printk( "%s(%d):%s mem addr conflict, Addr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_memory_base); + info->init_error = DiagStatus_AddressConflict; goto errout; } else @@ -3460,22 +3655,25 @@ int claim_resources(SLMP_INFO *info) if (request_mem_region(info->phys_lcr_base + info->lcr_offset,128,"synclinkmp") == NULL) { printk( "%s(%d):%s lcr mem addr conflict, Addr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_lcr_base); + info->init_error = DiagStatus_AddressConflict; goto errout; } else info->lcr_mem_requested = 1; - if (request_mem_region(info->phys_sca_base + info->sca_offset,512,"synclinkmp") == NULL) { + if (request_mem_region(info->phys_sca_base + info->sca_offset,SCA_BASE_SIZE,"synclinkmp") == NULL) { printk( "%s(%d):%s sca mem addr conflict, Addr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_sca_base); + info->init_error = DiagStatus_AddressConflict; goto errout; } else info->sca_base_requested = 1; - if (request_mem_region(info->phys_statctrl_base + info->statctrl_offset,16,"synclinkmp") == NULL) { + if (request_mem_region(info->phys_statctrl_base + info->statctrl_offset,SCA_REG_SIZE,"synclinkmp") == NULL) { printk( "%s(%d):%s stat/ctrl mem addr conflict, Addr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_statctrl_base); + info->init_error = DiagStatus_AddressConflict; goto errout; } else @@ -3485,33 +3683,41 @@ int claim_resources(SLMP_INFO *info) if (!info->memory_base) { printk( "%s(%d):%s Cant map shared memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_memory_base ); + info->init_error = DiagStatus_CantAssignPciResources; goto errout; } - if ( !memory_test(info) ) { - printk( "%s(%d):Shared Memory Test failed for device %s MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base ); - goto errout; - } - - info->lcr_base = ioremap(info->phys_lcr_base,PAGE_SIZE) + info->lcr_offset; + info->lcr_base = ioremap(info->phys_lcr_base,PAGE_SIZE); if (!info->lcr_base) { printk( "%s(%d):%s Cant map LCR memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); + info->init_error = DiagStatus_CantAssignPciResources; goto errout; } + info->lcr_base += info->lcr_offset; - info->sca_base = ioremap(info->phys_sca_base,PAGE_SIZE) + info->sca_offset; + info->sca_base = ioremap(info->phys_sca_base,PAGE_SIZE); if (!info->sca_base) { printk( "%s(%d):%s Cant map SCA memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_sca_base ); + info->init_error = DiagStatus_CantAssignPciResources; goto errout; } + info->sca_base += info->sca_offset; - info->statctrl_base = ioremap(info->phys_statctrl_base,PAGE_SIZE) + info->statctrl_offset; + info->statctrl_base = ioremap(info->phys_statctrl_base,PAGE_SIZE); if (!info->statctrl_base) { printk( "%s(%d):%s Cant map SCA Status/Control memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_statctrl_base ); + info->init_error = DiagStatus_CantAssignPciResources; + goto errout; + } + info->statctrl_base += info->statctrl_offset; + + if ( !memory_test(info) ) { + printk( "%s(%d):Shared Memory Test failed for device %s MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base ); + info->init_error = DiagStatus_MemoryError; goto errout; } @@ -3534,7 +3740,7 @@ void release_resources(SLMP_INFO *info) } if ( info->shared_mem_requested ) { - release_mem_region(info->phys_memory_base,0x40000); + release_mem_region(info->phys_memory_base,SCA_MEM_SIZE); info->shared_mem_requested = 0; } if ( info->lcr_mem_requested ) { @@ -3542,11 +3748,11 @@ void release_resources(SLMP_INFO *info) info->lcr_mem_requested = 0; } if ( info->sca_base_requested ) { - release_mem_region(info->phys_sca_base + info->sca_offset,512); + release_mem_region(info->phys_sca_base + info->sca_offset,SCA_BASE_SIZE); info->sca_base_requested = 0; } if ( info->sca_statctrl_requested ) { - release_mem_region(info->phys_statctrl_base + info->statctrl_offset,16); + release_mem_region(info->phys_statctrl_base + info->statctrl_offset,SCA_REG_SIZE); info->sca_statctrl_requested = 0; } @@ -3616,9 +3822,8 @@ void add_device(SLMP_INFO *info) info->irq_level, info->max_frame_size ); -#ifdef CONFIG_SYNCLINK_SYNCPPP - if (info->dosyncppp) - sppp_init(info); +#ifdef CONFIG_HDLC + hdlcdev_init(info); #endif } @@ -3788,7 +3993,6 @@ static struct tty_operations ops = { static void synclinkmp_cleanup(void) { - unsigned long flags; int rc; SLMP_INFO *info; SLMP_INFO *tmp; @@ -3802,34 +4006,24 @@ static void synclinkmp_cleanup(void) put_tty_driver(serial_driver); } + /* reset devices */ info = synclinkmp_device_list; while(info) { -#ifdef CONFIG_SYNCLINK_SYNCPPP - if (info->dosyncppp) - sppp_delete(info); -#endif reset_port(info); - if ( info->port_num == 0 ) { - if ( info->irq_requested ) { - free_irq(info->irq_level, info); - info->irq_requested = 0; - } - } info = info->next_device; } - /* port 0 of each adapter originally claimed - * all resources, release those now - */ + /* release devices */ info = synclinkmp_device_list; while(info) { +#ifdef CONFIG_HDLC + hdlcdev_exit(info); +#endif free_dma_bufs(info); free_tmp_rx_buf(info); if ( info->port_num == 0 ) { - spin_lock_irqsave(&info->lock,flags); - reset_adapter(info); - write_reg(info, LPR, 1); /* set low power mode */ - spin_unlock_irqrestore(&info->lock,flags); + if (info->sca_base) + write_reg(info, LPR, 1); /* set low power mode */ release_resources(info); } tmp = info; @@ -4112,6 +4306,9 @@ void tx_start(SLMP_INFO *info) } } + write_reg16(info, TRC0, + (unsigned short)(((tx_negate_fifo_level-1)<<8) + tx_active_fifo_level)); + write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ @@ -4123,17 +4320,16 @@ void tx_start(SLMP_INFO *info) write_reg16(info, TXDMA + EDA, info->tx_buf_list_ex[info->last_tx_buf].phys_entry); - /* clear IDLE and UDRN status bit */ - info->ie1_value &= ~(IDLE + UDRN); - if (info->params.mode != MGSL_MODE_ASYNC) - info->ie1_value |= UDRN; /* HDLC, IRQ on underrun */ - write_reg(info, IE1, info->ie1_value); /* enable MSCI interrupts */ + /* enable underrun IRQ */ + info->ie1_value &= ~IDLE; + info->ie1_value |= UDRN; + write_reg(info, IE1, info->ie1_value); write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); write_reg(info, TXDMA + DIR, 0x40); /* enable Tx DMA interrupts (EOM) */ write_reg(info, TXDMA + DSR, 0xf2); /* clear Tx DMA IRQs, enable Tx DMA */ - info->tx_timer.expires = jiffies + jiffies_from_ms(5000); + info->tx_timer.expires = jiffies + msecs_to_jiffies(5000); add_timer(&info->tx_timer); } else { @@ -4823,10 +5019,12 @@ CheckAgain: info->icount.rxcrc++; framesize = 0; - -#ifdef CONFIG_SYNCLINK_SYNCPPP - info->netstats.rx_errors++; - info->netstats.rx_frame_errors++; +#ifdef CONFIG_HDLC + { + struct net_device_stats *stats = hdlc_stats(info->netdev); + stats->rx_errors++; + stats->rx_frame_errors++; + } #endif } @@ -4836,7 +5034,7 @@ CheckAgain: if ( debug_level >= DEBUG_LEVEL_DATA ) trace_block(info,info->rx_buf_list_ex[StartIndex].virt_addr, - MIN(framesize,SCABUFSIZE),0); + min_t(int, framesize,SCABUFSIZE),0); if (framesize) { if (framesize > info->max_frame_size) @@ -4851,7 +5049,7 @@ CheckAgain: info->icount.rxok++; while(copy_count) { - int partial_count = MIN(copy_count,SCABUFSIZE); + int partial_count = min(copy_count,SCABUFSIZE); memcpy( ptmp, info->rx_buf_list_ex[index].virt_addr, partial_count ); @@ -4862,22 +5060,13 @@ CheckAgain: index = 0; } -#ifdef CONFIG_SYNCLINK_SYNCPPP - if (info->netcount) { - /* pass frame to syncppp device */ - sppp_rx_done(info,info->tmp_rx_buf,framesize); - } +#ifdef CONFIG_HDLC + if (info->netcount) + hdlcdev_rx(info,info->tmp_rx_buf,framesize); else #endif - { - if ( tty && tty->ldisc.receive_buf ) { - /* Call the line discipline receive callback directly. */ - tty->ldisc.receive_buf(tty, - info->tmp_rx_buf, - info->flag_buf, - framesize); - } - } + ldisc_receive_buf(tty,info->tmp_rx_buf, + info->flag_buf, framesize); } } /* Free the buffers used by this frame. */ @@ -4910,14 +5099,14 @@ void tx_load_dma_buffer(SLMP_INFO *info, const char *buf, unsigned int count) SCADESC_EX *desc_ex; if ( debug_level >= DEBUG_LEVEL_DATA ) - trace_block(info,buf, MIN(count,SCABUFSIZE), 1); + trace_block(info,buf, min_t(int, count,SCABUFSIZE), 1); /* Copy source buffer to one or more DMA buffers, starting with * the first transmit dma buffer. */ for(i=0;;) { - copy_count = MIN(count,SCABUFSIZE); + copy_count = min_t(unsigned short,count,SCABUFSIZE); desc = &info->tx_buf_list[i]; desc_ex = &info->tx_buf_list_ex[i]; @@ -5021,7 +5210,7 @@ int irq_test(SLMP_INFO *info) timeout=100; while( timeout-- && !info->irq_occurred ) { set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(jiffies_from_ms(10)); + schedule_timeout(msecs_to_jiffies(10)); } spin_lock_irqsave(&info->lock,flags); @@ -5172,7 +5361,7 @@ int loopback_test(SLMP_INFO *info) /* Set a timeout for waiting for interrupt. */ for ( timeout = 100; timeout; --timeout ) { set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(jiffies_from_ms(10)); + schedule_timeout(msecs_to_jiffies(10)); if (rx_get_frame(info)) { rc = TRUE; @@ -5384,9 +5573,9 @@ void tx_timeout(unsigned long context) spin_unlock_irqrestore(&info->lock,flags); -#ifdef CONFIG_SYNCLINK_SYNCPPP +#ifdef CONFIG_HDLC if (info->netcount) - sppp_tx_done(info); + hdlcdev_tx_done(info); else #endif bh_transmit(info); @@ -5428,7 +5617,7 @@ void status_timeout(unsigned long context) info->status_timer.data = (unsigned long)info; info->status_timer.function = status_timeout; - info->status_timer.expires = jiffies + jiffies_from_ms(10); + info->status_timer.expires = jiffies + msecs_to_jiffies(10); add_timer(&info->status_timer); }