diff options
Diffstat (limited to 'drivers/net/wan/c101.c')
| -rw-r--r-- | drivers/net/wan/c101.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c index b60ef02db7b..6b63b350cd5 100644 --- a/drivers/net/wan/c101.c +++ b/drivers/net/wan/c101.c @@ -7,7 +7,7 @@ * under the terms of version 2 of the GNU General Public License * as published by the Free Software Foundation. * - * For information see http://hq.pm.waw.pl/hdlc/ + * For information see <http://www.kernel.org/pub/linux/utils/net/hdlc/> * * Sources of information: * Hitachi HD64570 SCA User's Manual @@ -116,27 +116,34 @@ static inline void openwin(card_t *card, u8 page) #include "hd6457x.c" +static inline void set_carrier(port_t *port) +{ + if (!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD)) + netif_carrier_on(port_to_dev(port)); + else + netif_carrier_off(port_to_dev(port)); +} + + static void sca_msci_intr(port_t *port) { - struct net_device *dev = port_to_dev(port); - card_t* card = port_to_card(port); - u8 stat = sca_in(MSCI1_OFFSET + ST1, card); /* read MSCI ST1 status */ + u8 stat = sca_in(MSCI0_OFFSET + ST1, port); /* read MSCI ST1 status */ - /* Reset MSCI TX underrun status bit */ - sca_out(stat & ST1_UDRN, MSCI0_OFFSET + ST1, card); + /* Reset MSCI TX underrun and CDCD (ignored) status bit */ + sca_out(stat & (ST1_UDRN | ST1_CDCD), MSCI0_OFFSET + ST1, port); if (stat & ST1_UDRN) { - struct net_device_stats *stats = hdlc_stats(dev); + struct net_device_stats *stats = hdlc_stats(port_to_dev(port)); stats->tx_errors++; /* TX Underrun error detected */ stats->tx_fifo_errors++; } + stat = sca_in(MSCI1_OFFSET + ST1, port); /* read MSCI1 ST1 status */ /* Reset MSCI CDCD status bit - uses ch#2 DCD input */ - sca_out(stat & ST1_CDCD, MSCI1_OFFSET + ST1, card); + sca_out(stat & ST1_CDCD, MSCI1_OFFSET + ST1, port); if (stat & ST1_CDCD) - hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, card) & ST3_DCD), - dev); + set_carrier(port); } @@ -190,8 +197,7 @@ static int c101_open(struct net_device *dev) sca_out(IE1_UDRN, MSCI0_OFFSET + IE1, port); sca_out(IE0_TXINT, MSCI0_OFFSET + IE0, port); - hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD), dev); - printk(KERN_DEBUG "0x%X\n", sca_in(MSCI1_OFFSET + ST3, port)); + set_carrier(port); /* enable MSCI1 CDCD interrupt */ sca_out(IE1_CDCD, MSCI1_OFFSET + IE1, port); @@ -378,7 +384,7 @@ static int __init c101_run(unsigned long irq, unsigned long winbase) } sca_init_sync_port(card); /* Set up C101 memory */ - hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, card) & ST3_DCD), dev); + set_carrier(card); printk(KERN_INFO "%s: Moxa C101 on IRQ%u," " using %u TX + %u RX packets rings\n", @@ -443,4 +449,5 @@ module_exit(c101_cleanup); MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>"); MODULE_DESCRIPTION("Moxa C101 serial port driver"); MODULE_LICENSE("GPL v2"); -module_param(hw, charp, 0444); /* hw=irq,ram:irq,... */ +module_param(hw, charp, 0444); +MODULE_PARM_DESC(hw, "irq,ram:irq,..."); |