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path: root/drivers/net/wan/c101.c
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Diffstat (limited to 'drivers/net/wan/c101.c')
-rw-r--r--drivers/net/wan/c101.c108
1 files changed, 58 insertions, 50 deletions
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index 43d854ace23..09a50751763 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -7,15 +7,18 @@
* 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
* Moxa C101 User's Manual
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/capability.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/string.h>
@@ -88,7 +91,7 @@ static card_t **new_card = &first_card;
/* EDA address register must be set in EDAL, EDAH order - 8 bit ISA bus */
#define sca_outw(value, reg, card) do { \
writeb(value & 0xFF, (card)->win0base + C101_SCA + (reg)); \
- writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg+1));\
+ writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg + 1));\
} while(0)
#define port_to_card(port) (port)
@@ -113,30 +116,37 @@ static inline void openwin(card_t *card, u8 page)
}
-#include "hd6457x.c"
+#include "hd64570.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);
- stats->tx_errors++; /* TX Underrun error detected */
- stats->tx_fifo_errors++;
+ /* TX Underrun error detected */
+ port_to_dev(port)->stats.tx_errors++;
+ port_to_dev(port)->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 +200,7 @@ 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);
@@ -257,7 +266,7 @@ static int c101_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
new_line.clock_type != CLOCK_TXFROMRX &&
new_line.clock_type != CLOCK_INT &&
new_line.clock_type != CLOCK_TXINT)
- return -EINVAL; /* No such clock setting */
+ return -EINVAL; /* No such clock setting */
if (new_line.loopback != 0 && new_line.loopback != 1)
return -EINVAL;
@@ -290,7 +299,13 @@ static void c101_destroy_card(card_t *card)
kfree(card);
}
-
+static const struct net_device_ops c101_ops = {
+ .ndo_open = c101_open,
+ .ndo_stop = c101_close,
+ .ndo_change_mtu = hdlc_change_mtu,
+ .ndo_start_xmit = hdlc_start_xmit,
+ .ndo_do_ioctl = c101_ioctl,
+};
static int __init c101_run(unsigned long irq, unsigned long winbase)
{
@@ -300,47 +315,44 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
int result;
if (irq<3 || irq>15 || irq == 6) /* FIXME */ {
- printk(KERN_ERR "c101: invalid IRQ value\n");
+ pr_err("invalid IRQ value\n");
return -ENODEV;
}
if (winbase < 0xC0000 || winbase > 0xDFFFF || (winbase & 0x3FFF) !=0) {
- printk(KERN_ERR "c101: invalid RAM value\n");
+ pr_err("invalid RAM value\n");
return -ENODEV;
}
- card = kmalloc(sizeof(card_t), GFP_KERNEL);
- if (card == NULL) {
- printk(KERN_ERR "c101: unable to allocate memory\n");
+ card = kzalloc(sizeof(card_t), GFP_KERNEL);
+ if (card == NULL)
return -ENOBUFS;
- }
- memset(card, 0, sizeof(card_t));
card->dev = alloc_hdlcdev(card);
if (!card->dev) {
- printk(KERN_ERR "c101: unable to allocate memory\n");
+ pr_err("unable to allocate memory\n");
kfree(card);
return -ENOBUFS;
}
if (request_irq(irq, sca_intr, 0, devname, card)) {
- printk(KERN_ERR "c101: could not allocate IRQ\n");
+ pr_err("could not allocate IRQ\n");
c101_destroy_card(card);
- return(-EBUSY);
+ return -EBUSY;
}
card->irq = irq;
if (!request_mem_region(winbase, C101_MAPPED_RAM_SIZE, devname)) {
- printk(KERN_ERR "c101: could not request RAM window\n");
+ pr_err("could not request RAM window\n");
c101_destroy_card(card);
- return(-EBUSY);
+ return -EBUSY;
}
card->phy_winbase = winbase;
card->win0base = ioremap(winbase, C101_MAPPED_RAM_SIZE);
if (!card->win0base) {
- printk(KERN_ERR "c101: could not map I/O address\n");
+ pr_err("could not map I/O address\n");
c101_destroy_card(card);
- return -EBUSY;
+ return -EFAULT;
}
card->tx_ring_buffers = TX_RING_BUFFERS;
@@ -358,32 +370,27 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
hdlc = dev_to_hdlc(dev);
spin_lock_init(&card->lock);
- SET_MODULE_OWNER(dev);
dev->irq = irq;
dev->mem_start = winbase;
dev->mem_end = winbase + C101_MAPPED_RAM_SIZE - 1;
dev->tx_queue_len = 50;
- dev->do_ioctl = c101_ioctl;
- dev->open = c101_open;
- dev->stop = c101_close;
+ dev->netdev_ops = &c101_ops;
hdlc->attach = sca_attach;
hdlc->xmit = sca_xmit;
card->settings.clock_type = CLOCK_EXT;
result = register_hdlc_device(dev);
if (result) {
- printk(KERN_WARNING "c101: unable to register hdlc device\n");
+ pr_warn("unable to register hdlc device\n");
c101_destroy_card(card);
return result;
}
- sca_init_sync_port(card); /* Set up C101 memory */
- hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, card) & ST3_DCD), dev);
+ sca_init_port(card); /* Set up C101 memory */
+ set_carrier(card);
- printk(KERN_INFO "%s: Moxa C101 on IRQ%u,"
- " using %u TX + %u RX packets rings\n",
- dev->name, card->irq,
- card->tx_ring_buffers, card->rx_ring_buffers);
+ netdev_info(dev, "Moxa C101 on IRQ%u, using %u TX + %u RX packets rings\n",
+ card->irq, card->tx_ring_buffers, card->rx_ring_buffers);
*new_card = card;
new_card = &card->next_card;
@@ -396,12 +403,12 @@ static int __init c101_init(void)
{
if (hw == NULL) {
#ifdef MODULE
- printk(KERN_INFO "c101: no card initialized\n");
+ pr_info("no card initialized\n");
#endif
- return -ENOSYS; /* no parameters specified, abort */
+ return -EINVAL; /* no parameters specified, abort */
}
- printk(KERN_INFO "%s\n", version);
+ pr_info("%s\n", version);
do {
unsigned long irq, ram;
@@ -416,11 +423,11 @@ static int __init c101_init(void)
c101_run(irq, ram);
if (*hw == '\x0')
- return first_card ? 0 : -ENOSYS;
+ return first_card ? 0 : -EINVAL;
}while(*hw++ == ':');
- printk(KERN_ERR "c101: invalid hardware parameters\n");
- return first_card ? 0 : -ENOSYS;
+ pr_err("invalid hardware parameters\n");
+ return first_card ? 0 : -EINVAL;
}
@@ -443,4 +450,5 @@ 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,...");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:33:50 +0000