diff options
Diffstat (limited to 'drivers/net/hamradio/yam.c')
| -rw-r--r-- | drivers/net/hamradio/yam.c | 163 |
1 files changed, 95 insertions, 68 deletions
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c index 1c942862a3f..81901659cc9 100644 --- a/drivers/net/hamradio/yam.c +++ b/drivers/net/hamradio/yam.c @@ -30,7 +30,7 @@ * 0.1 F1OAT 07.06.98 Add timer polling routine for channel arbitration * 0.2 F6FBB 08.06.98 Added delay after FPGA programming * 0.3 F6FBB 29.07.98 Delayed PTT implementation for dupmode=2 - * 0.4 F6FBB 30.07.98 Added TxTail, Slottime and Persistance + * 0.4 F6FBB 30.07.98 Added TxTail, Slottime and Persistence * 0.5 F6FBB 01.08.98 Shared IRQs, /proc/net and network statistics * 0.6 F6FBB 25.08.98 Added 1200Bds format * 0.7 F6FBB 12.09.98 Added to the kernel configuration @@ -52,9 +52,10 @@ #include <linux/bitops.h> #include <linux/random.h> #include <asm/io.h> -#include <asm/system.h> #include <linux/interrupt.h> #include <linux/ioport.h> +#include <linux/firmware.h> +#include <linux/platform_device.h> #include <linux/netdevice.h> #include <linux/if_arp.h> @@ -71,16 +72,18 @@ #include <linux/init.h> #include <linux/yam.h> -#include "yam9600.h" -#include "yam1200.h" /* --------------------------------------------------------------------- */ static const char yam_drvname[] = "yam"; -static char yam_drvinfo[] __initdata = KERN_INFO "YAM driver version 0.8 by F1OAT/F6FBB\n"; +static const char yam_drvinfo[] __initconst = KERN_INFO \ + "YAM driver version 0.8 by F1OAT/F6FBB\n"; /* --------------------------------------------------------------------- */ +#define FIRMWARE_9600 "yam/9600.bin" +#define FIRMWARE_1200 "yam/1200.bin" + #define YAM_9600 1 #define YAM_1200 2 @@ -115,10 +118,6 @@ struct yam_port { struct net_device *dev; - /* Stats section */ - - struct net_device_stats stats; - int nb_rxint; int nb_mdint; @@ -345,30 +344,73 @@ static int fpga_write(int iobase, unsigned char wrd) return 0; } -static unsigned char *add_mcs(unsigned char *bits, int bitrate) +/* + * predef should be 0 for loading user defined mcs + * predef should be YAM_1200 for loading predef 1200 mcs + * predef should be YAM_9600 for loading predef 9600 mcs + */ +static unsigned char *add_mcs(unsigned char *bits, int bitrate, + unsigned int predef) { + const char *fw_name[2] = {FIRMWARE_9600, FIRMWARE_1200}; + const struct firmware *fw; + struct platform_device *pdev; struct yam_mcs *p; + int err; + + switch (predef) { + case 0: + fw = NULL; + break; + case YAM_1200: + case YAM_9600: + predef--; + pdev = platform_device_register_simple("yam", 0, NULL, 0); + if (IS_ERR(pdev)) { + printk(KERN_ERR "yam: Failed to register firmware\n"); + return NULL; + } + err = request_firmware(&fw, fw_name[predef], &pdev->dev); + platform_device_unregister(pdev); + if (err) { + printk(KERN_ERR "Failed to load firmware \"%s\"\n", + fw_name[predef]); + return NULL; + } + if (fw->size != YAM_FPGA_SIZE) { + printk(KERN_ERR "Bogus length %zu in firmware \"%s\"\n", + fw->size, fw_name[predef]); + release_firmware(fw); + return NULL; + } + bits = (unsigned char *)fw->data; + break; + default: + printk(KERN_ERR "yam: Invalid predef number %u\n", predef); + return NULL; + } /* If it already exists, replace the bit data */ p = yam_data; while (p) { if (p->bitrate == bitrate) { memcpy(p->bits, bits, YAM_FPGA_SIZE); - return p->bits; + goto out; } p = p->next; } /* Allocate a new mcs */ if ((p = kmalloc(sizeof(struct yam_mcs), GFP_KERNEL)) == NULL) { - printk(KERN_WARNING "YAM: no memory to allocate mcs\n"); + release_firmware(fw); return NULL; } memcpy(p->bits, bits, YAM_FPGA_SIZE); p->bitrate = bitrate; p->next = yam_data; yam_data = p; - + out: + release_firmware(fw); return p->bits; } @@ -386,9 +428,11 @@ static unsigned char *get_mcs(int bitrate) /* Load predefined mcs data */ switch (bitrate) { case 1200: - return add_mcs(bits_1200, bitrate); + /* setting predef as YAM_1200 for loading predef 1200 mcs */ + return add_mcs(NULL, bitrate, YAM_1200); default: - return add_mcs(bits_9600, bitrate); + /* setting predef as YAM_9600 for loading predef 9600 mcs */ + return add_mcs(NULL, bitrate, YAM_9600); } } @@ -507,7 +551,7 @@ static inline void yam_rx_flag(struct net_device *dev, struct yam_port *yp) } else { if (!(skb = dev_alloc_skb(pkt_len))) { printk(KERN_WARNING "%s: memory squeeze, dropping packet\n", dev->name); - ++yp->stats.rx_dropped; + ++dev->stats.rx_dropped; } else { unsigned char *cp; cp = skb_put(skb, pkt_len); @@ -515,8 +559,7 @@ static inline void yam_rx_flag(struct net_device *dev, struct yam_port *yp) memcpy(cp, yp->rx_buf, pkt_len - 1); skb->protocol = ax25_type_trans(skb, dev); netif_rx(skb); - dev->last_rx = jiffies; - ++yp->stats.rx_packets; + ++dev->stats.rx_packets; } } } @@ -549,13 +592,14 @@ static void ptt_off(struct net_device *dev) outb(PTT_OFF, MCR(dev->base_addr)); } -static int yam_send_packet(struct sk_buff *skb, struct net_device *dev) +static netdev_tx_t yam_send_packet(struct sk_buff *skb, + struct net_device *dev) { struct yam_port *yp = netdev_priv(dev); skb_queue_tail(&yp->send_queue, skb); dev->trans_start = jiffies; - return 0; + return NETDEV_TX_OK; } static void yam_start_tx(struct net_device *dev, struct yam_port *yp) @@ -594,7 +638,7 @@ static void yam_arbitrate(struct net_device *dev) yp->slotcnt = yp->slot / 10; /* is random > persist ? */ - if ((random32() % 256) > yp->pers) + if ((prandom_u32() % 256) > yp->pers) return; yam_start_tx(dev, yp); @@ -678,7 +722,7 @@ static void yam_tx_byte(struct net_device *dev, struct yam_port *yp) yp->tx_count = 1; yp->tx_state = TX_HEAD; } - ++yp->stats.tx_packets; + ++dev->stats.tx_packets; break; case TX_TAIL: if (--yp->tx_count <= 0) { @@ -717,7 +761,7 @@ static irqreturn_t yam_interrupt(int irq, void *dev_id) handled = 1; if (lsr & LSR_OE) - ++yp->stats.rx_fifo_errors; + ++dev->stats.rx_fifo_errors; yp->dcd = (msr & RX_DCD) ? 1 : 0; @@ -779,16 +823,16 @@ static int yam_seq_show(struct seq_file *seq, void *v) seq_printf(seq, " TxTail %u\n", yp->txtail); seq_printf(seq, " SlotTime %u\n", yp->slot); seq_printf(seq, " Persist %u\n", yp->pers); - seq_printf(seq, " TxFrames %lu\n", yp->stats.tx_packets); - seq_printf(seq, " RxFrames %lu\n", yp->stats.rx_packets); + seq_printf(seq, " TxFrames %lu\n", dev->stats.tx_packets); + seq_printf(seq, " RxFrames %lu\n", dev->stats.rx_packets); seq_printf(seq, " TxInt %u\n", yp->nb_mdint); seq_printf(seq, " RxInt %u\n", yp->nb_rxint); - seq_printf(seq, " RxOver %lu\n", yp->stats.rx_fifo_errors); + seq_printf(seq, " RxOver %lu\n", dev->stats.rx_fifo_errors); seq_printf(seq, "\n"); return 0; } -static struct seq_operations yam_seqops = { +static const struct seq_operations yam_seqops = { .start = yam_seq_start, .next = yam_seq_next, .stop = yam_seq_stop, @@ -813,26 +857,6 @@ static const struct file_operations yam_info_fops = { /* --------------------------------------------------------------------- */ -static struct net_device_stats *yam_get_stats(struct net_device *dev) -{ - struct yam_port *yp; - - if (!dev) - return NULL; - - yp = netdev_priv(dev); - if (yp->magic != YAM_MAGIC) - return NULL; - - /* - * Get the current statistics. This may be called with the - * card open or closed. - */ - return &yp->stats; -} - -/* --------------------------------------------------------------------- */ - static int yam_open(struct net_device *dev) { struct yam_port *yp = netdev_priv(dev); @@ -842,7 +866,7 @@ static int yam_open(struct net_device *dev) printk(KERN_INFO "Trying %s at iobase 0x%lx irq %u\n", dev->name, dev->base_addr, dev->irq); - if (!dev || !yp->bitrate) + if (!yp->bitrate) return -ENXIO; if (!dev->base_addr || dev->base_addr > 0x1000 - YAM_EXTENT || dev->irq < 2 || dev->irq > 15) { @@ -864,7 +888,7 @@ static int yam_open(struct net_device *dev) goto out_release_base; } outb(0, IER(dev->base_addr)); - if (request_irq(dev->irq, yam_interrupt, IRQF_DISABLED | IRQF_SHARED, dev->name, dev)) { + if (request_irq(dev->irq, yam_interrupt, IRQF_SHARED, dev->name, dev)) { printk(KERN_ERR "%s: irq %d busy\n", dev->name, dev->irq); ret = -EBUSY; goto out_release_base; @@ -878,10 +902,10 @@ static int yam_open(struct net_device *dev) /* Reset overruns for all ports - FPGA programming makes overruns */ for (i = 0; i < NR_PORTS; i++) { - struct net_device *dev = yam_devs[i]; - struct yam_port *yp = netdev_priv(dev); - inb(LSR(dev->base_addr)); - yp->stats.rx_fifo_errors = 0; + struct net_device *yam_dev = yam_devs[i]; + + inb(LSR(yam_dev->base_addr)); + yam_dev->stats.rx_fifo_errors = 0; } printk(KERN_INFO "%s at iobase 0x%lx irq %u uart %s\n", dev->name, dev->base_addr, dev->irq, @@ -951,7 +975,6 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) return -EINVAL; /* Cannot change this parameter when up */ if ((ym = kmalloc(sizeof(struct yamdrv_ioctl_mcs), GFP_KERNEL)) == NULL) return -ENOBUFS; - ym->bitrate = 9600; if (copy_from_user(ym, ifr->ifr_data, sizeof(struct yamdrv_ioctl_mcs))) { kfree(ym); return -EFAULT; @@ -960,7 +983,8 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) kfree(ym); return -EINVAL; } - add_mcs(ym->bits, ym->bitrate); + /* setting predef as 0 for loading userdefined mcs data */ + add_mcs(ym->bits, ym->bitrate, 0); kfree(ym); break; @@ -1033,6 +1057,7 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) break; case SIOCYAMGCFG: + memset(&yi, 0, sizeof(yi)); yi.cfg.mask = 0xffffffff; yi.cfg.iobase = yp->iobase; yi.cfg.irq = yp->irq; @@ -1069,6 +1094,14 @@ static int yam_set_mac_address(struct net_device *dev, void *addr) /* --------------------------------------------------------------------- */ +static const struct net_device_ops yam_netdev_ops = { + .ndo_open = yam_open, + .ndo_stop = yam_close, + .ndo_start_xmit = yam_send_packet, + .ndo_do_ioctl = yam_ioctl, + .ndo_set_mac_address = yam_set_mac_address, +}; + static void yam_setup(struct net_device *dev) { struct yam_port *yp = netdev_priv(dev); @@ -1089,18 +1122,11 @@ static void yam_setup(struct net_device *dev) dev->base_addr = yp->iobase; dev->irq = yp->irq; - dev->open = yam_open; - dev->stop = yam_close; - dev->do_ioctl = yam_ioctl; - dev->hard_start_xmit = yam_send_packet; - dev->get_stats = yam_get_stats; - skb_queue_head_init(&yp->send_queue); + dev->netdev_ops = &yam_netdev_ops; dev->header_ops = &ax25_header_ops; - dev->set_mac_address = yam_set_mac_address; - dev->type = ARPHRD_AX25; dev->hard_header_len = AX25_MAX_HEADER_LEN; dev->mtu = AX25_MTU; @@ -1123,8 +1149,7 @@ static int __init yam_init_driver(void) dev = alloc_netdev(sizeof(struct yam_port), name, yam_setup); if (!dev) { - printk(KERN_ERR "yam: cannot allocate net device %s\n", - dev->name); + pr_err("yam: cannot allocate net device\n"); err = -ENOMEM; goto error; } @@ -1142,7 +1167,7 @@ static int __init yam_init_driver(void) yam_timer.expires = jiffies + HZ / 100; add_timer(&yam_timer); - proc_net_fops_create(&init_net, "yam", S_IRUGO, &yam_info_fops); + proc_create("yam", S_IRUGO, init_net.proc_net, &yam_info_fops); return 0; error: while (--i >= 0) { @@ -1159,7 +1184,7 @@ static void __exit yam_cleanup_driver(void) struct yam_mcs *p; int i; - del_timer(&yam_timer); + del_timer_sync(&yam_timer); for (i = 0; i < NR_PORTS; i++) { struct net_device *dev = yam_devs[i]; if (dev) { @@ -1174,7 +1199,7 @@ static void __exit yam_cleanup_driver(void) kfree(p); } - proc_net_remove(&init_net, "yam"); + remove_proc_entry("yam", init_net.proc_net); } /* --------------------------------------------------------------------- */ @@ -1182,6 +1207,8 @@ static void __exit yam_cleanup_driver(void) MODULE_AUTHOR("Frederic Rible F1OAT frible@teaser.fr"); MODULE_DESCRIPTION("Yam amateur radio modem driver"); MODULE_LICENSE("GPL"); +MODULE_FIRMWARE(FIRMWARE_1200); +MODULE_FIRMWARE(FIRMWARE_9600); module_init(yam_init_driver); module_exit(yam_cleanup_driver); |