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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.c86
1 files changed, 36 insertions, 50 deletions
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index 09a50751763b..8dd14d916c3a 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Moxa C101 synchronous serial card driver for Linux
*
* Copyright (C) 2000-2003 Krzysztof Halasa <khc@pm.waw.pl>
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
- *
- * For information see <http://www.kernel.org/pub/linux/utils/net/hdlc/>
+ * For information see <https://www.kernel.org/pub/linux/utils/net/hdlc/>
*
* Sources of information:
* Hitachi HD64570 SCA User's Manual
@@ -24,7 +21,6 @@
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/init.h>
-#include <linux/moduleparam.h>
#include <linux/netdevice.h>
#include <linux/hdlc.h>
#include <linux/delay.h>
@@ -32,9 +28,8 @@
#include "hd64570.h"
-
-static const char* version = "Moxa C101 driver version: 1.15";
-static const char* devname = "C101";
+static const char *version = "Moxa C101 driver version: 1.15";
+static const char *devname = "C101";
#undef DEBUG_PKT
#define DEBUG_RINGS
@@ -55,7 +50,6 @@ static const char* devname = "C101";
static char *hw; /* pointer to hw=xxx command line string */
-
typedef struct card_s {
struct net_device *dev;
spinlock_t lock; /* TX lock */
@@ -76,14 +70,13 @@ typedef struct card_s {
u8 page;
struct card_s *next_card;
-}card_t;
+} card_t;
typedef card_t port_t;
static card_t *first_card;
static card_t **new_card = &first_card;
-
#define sca_in(reg, card) readb((card)->win0base + C101_SCA + (reg))
#define sca_out(value, reg, card) writeb(value, (card)->win0base + C101_SCA + (reg))
#define sca_inw(reg, card) readw((card)->win0base + C101_SCA + (reg))
@@ -91,19 +84,18 @@ 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));\
-} while(0)
+ writeb((value >> 8) & 0xFF, (card)->win0base + C101_SCA + (reg + 1));\
+} while (0)
#define port_to_card(port) (port)
#define log_node(port) (0)
#define phy_node(port) (0)
#define winsize(card) (C101_WINDOW_SIZE)
#define win0base(card) ((card)->win0base)
-#define winbase(card) ((card)->win0base + 0x2000)
+#define winbase(card) ((card)->win0base + 0x2000)
#define get_port(card, port) (card)
static void sca_msci_intr(port_t *port);
-
static inline u8 sca_get_page(card_t *card)
{
return card->page;
@@ -115,10 +107,8 @@ static inline void openwin(card_t *card, u8 page)
writeb(page, card->win0base + C101_PAGE);
}
-
#include "hd64570.c"
-
static inline void set_carrier(port_t *port)
{
if (!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD))
@@ -127,7 +117,6 @@ static inline void set_carrier(port_t *port)
netif_carrier_off(port_to_dev(port));
}
-
static void sca_msci_intr(port_t *port)
{
u8 stat = sca_in(MSCI0_OFFSET + ST1, port); /* read MSCI ST1 status */
@@ -149,13 +138,12 @@ static void sca_msci_intr(port_t *port)
set_carrier(port);
}
-
static void c101_set_iface(port_t *port)
{
u8 rxs = port->rxs & CLK_BRG_MASK;
u8 txs = port->txs & CLK_BRG_MASK;
- switch(port->settings.clock_type) {
+ switch (port->settings.clock_type) {
case CLOCK_INT:
rxs |= CLK_BRG_RX; /* TX clock */
txs |= CLK_RXCLK_TX; /* BRG output */
@@ -183,7 +171,6 @@ static void c101_set_iface(port_t *port)
sca_set_port(port);
}
-
static int c101_open(struct net_device *dev)
{
port_t *port = dev_to_port(dev);
@@ -210,7 +197,6 @@ static int c101_open(struct net_device *dev)
return 0;
}
-
static int c101_close(struct net_device *dev)
{
port_t *port = dev_to_port(dev);
@@ -222,15 +208,12 @@ static int c101_close(struct net_device *dev)
return 0;
}
-
-static int c101_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int c101_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+ void __user *data, int cmd)
{
- const size_t size = sizeof(sync_serial_settings);
- sync_serial_settings new_line;
- sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync;
+#ifdef DEBUG_RINGS
port_t *port = dev_to_port(dev);
-#ifdef DEBUG_RINGS
if (cmd == SIOCDEVPRIVATE) {
sca_dump_rings(dev);
printk(KERN_DEBUG "MSCI1: ST: %02x %02x %02x %02x\n",
@@ -241,14 +224,22 @@ static int c101_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return 0;
}
#endif
- if (cmd != SIOCWANDEV)
- return hdlc_ioctl(dev, ifr, cmd);
- switch(ifr->ifr_settings.type) {
+ return -EOPNOTSUPP;
+}
+
+static int c101_ioctl(struct net_device *dev, struct if_settings *ifs)
+{
+ const size_t size = sizeof(sync_serial_settings);
+ sync_serial_settings new_line;
+ sync_serial_settings __user *line = ifs->ifs_ifsu.sync;
+ port_t *port = dev_to_port(dev);
+
+ switch (ifs->type) {
case IF_GET_IFACE:
- ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL;
- if (ifr->ifr_settings.size < size) {
- ifr->ifr_settings.size = size; /* data size wanted */
+ ifs->type = IF_IFACE_SYNC_SERIAL;
+ if (ifs->size < size) {
+ ifs->size = size; /* data size wanted */
return -ENOBUFS;
}
if (copy_to_user(line, &port->settings, size))
@@ -256,7 +247,7 @@ static int c101_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return 0;
case IF_IFACE_SYNC_SERIAL:
- if(!capable(CAP_NET_ADMIN))
+ if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (copy_from_user(&new_line, line, size))
@@ -276,12 +267,10 @@ static int c101_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return 0;
default:
- return hdlc_ioctl(dev, ifr, cmd);
+ return hdlc_ioctl(dev, ifs);
}
}
-
-
static void c101_destroy_card(card_t *card)
{
readb(card->win0base + C101_PAGE); /* Resets SCA? */
@@ -302,9 +291,9 @@ static void c101_destroy_card(card_t *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,
+ .ndo_siocwandev = c101_ioctl,
+ .ndo_siocdevprivate = c101_siocdevprivate,
};
static int __init c101_run(unsigned long irq, unsigned long winbase)
@@ -314,18 +303,18 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
card_t *card;
int result;
- if (irq<3 || irq>15 || irq == 6) /* FIXME */ {
+ if (irq < 3 || irq > 15 || irq == 6) /* FIXME */ {
pr_err("invalid IRQ value\n");
return -ENODEV;
}
- if (winbase < 0xC0000 || winbase > 0xDFFFF || (winbase & 0x3FFF) !=0) {
+ if (winbase < 0xC0000 || winbase > 0xDFFFF || (winbase & 0x3FFF) != 0) {
pr_err("invalid RAM value\n");
return -ENODEV;
}
card = kzalloc(sizeof(card_t), GFP_KERNEL);
- if (card == NULL)
+ if (!card)
return -ENOBUFS;
card->dev = alloc_hdlcdev(card);
@@ -397,11 +386,9 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
return 0;
}
-
-
static int __init c101_init(void)
{
- if (hw == NULL) {
+ if (!hw) {
#ifdef MODULE
pr_info("no card initialized\n");
#endif
@@ -424,26 +411,25 @@ static int __init c101_init(void)
if (*hw == '\x0')
return first_card ? 0 : -EINVAL;
- }while(*hw++ == ':');
+ } while (*hw++ == ':');
pr_err("invalid hardware parameters\n");
return first_card ? 0 : -EINVAL;
}
-
static void __exit c101_cleanup(void)
{
card_t *card = first_card;
while (card) {
card_t *ptr = card;
+
card = card->next_card;
unregister_hdlc_device(port_to_dev(ptr));
c101_destroy_card(ptr);
}
}
-
module_init(c101_init);
module_exit(c101_cleanup);
generated by cgit (git 2.34.1) at 2025-12-25 03:48:13 +0000