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path: root/drivers/net/wan/n2.c
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Diffstat (limited to 'drivers/net/wan/n2.c')
-rw-r--r--drivers/net/wan/n2.c93
1 files changed, 37 insertions, 56 deletions
diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index c8f4517db3a0..f3e80722ba1d 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* SDL Inc. RISCom/N2 synchronous serial card driver for Linux
*
* Copyright (C) 1998-2003 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/>
*
* Note: integrated CSU/DSU/DDS are not supported by this driver
*
@@ -35,9 +32,8 @@
#include <asm/io.h>
#include "hd64570.h"
-
-static const char* version = "SDL RISCom/N2 driver version: 1.15";
-static const char* devname = "RISCom/N2";
+static const char *version = "SDL RISCom/N2 driver version: 1.15";
+static const char *devname = "RISCom/N2";
#undef DEBUG_PKT
#define DEBUG_RINGS
@@ -67,11 +63,9 @@ static char *hw; /* pointer to hw=xxx command line string */
#define PCR_ENWIN 4 /* Open window */
#define PCR_BUS16 8 /* 16-bit bus */
-
/* Memory Base Address Register */
#define N2_BAR 2
-
/* Page Scan Register */
#define N2_PSR 4
#define WIN16K 0x00
@@ -81,7 +75,6 @@ static char *hw; /* pointer to hw=xxx command line string */
#define PSR_DMAEN 0x80
#define PSR_PAGEBITS 0x0F
-
/* Modem Control Reg */
#define N2_MCR 6
#define CLOCK_OUT_PORT1 0x80
@@ -93,7 +86,6 @@ static char *hw; /* pointer to hw=xxx command line string */
#define DTR_PORT1 0x02
#define DTR_PORT0 0x01
-
typedef struct port_s {
struct net_device *dev;
struct card_s *card;
@@ -109,9 +101,7 @@ typedef struct port_s {
u8 rxs, txs, tmc; /* SCA registers */
u8 phy_node; /* physical port # - 0 or 1 */
u8 log_node; /* logical port # */
-}port_t;
-
-
+} port_t;
typedef struct card_s {
u8 __iomem *winbase; /* ISA window base address */
@@ -125,13 +115,11 @@ typedef struct card_s {
port_t ports[2];
struct card_s *next_card;
-}card_t;
-
+} card_t;
static card_t *first_card;
static card_t **new_card = &first_card;
-
#define sca_reg(reg, card) (0x8000 | (card)->io | \
((reg) & 0x0F) | (((reg) & 0xF0) << 6))
#define sca_in(reg, card) inb(sca_reg(reg, card))
@@ -147,23 +135,20 @@ static card_t **new_card = &first_card;
#define get_port(card, port) ((card)->ports[port].valid ? \
&(card)->ports[port] : NULL)
-
static __inline__ u8 sca_get_page(card_t *card)
{
return inb(card->io + N2_PSR) & PSR_PAGEBITS;
}
-
static __inline__ void openwin(card_t *card, u8 page)
{
u8 psr = inb(card->io + N2_PSR);
+
outb((psr & ~PSR_PAGEBITS) | page, card->io + N2_PSR);
}
-
#include "hd64570.c"
-
static void n2_set_iface(port_t *port)
{
card_t *card = port->card;
@@ -173,7 +158,7 @@ static void n2_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:
mcr |= port->phy_node ? CLOCK_OUT_PORT1 : CLOCK_OUT_PORT0;
rxs |= CLK_BRG_RX; /* BRG output */
@@ -206,13 +191,12 @@ static void n2_set_iface(port_t *port)
sca_set_port(port);
}
-
-
static int n2_open(struct net_device *dev)
{
port_t *port = dev_to_port(dev);
int io = port->card->io;
- u8 mcr = inb(io + N2_MCR) | (port->phy_node ? TX422_PORT1:TX422_PORT0);
+ u8 mcr = inb(io + N2_MCR) |
+ (port->phy_node ? TX422_PORT1 : TX422_PORT0);
int result;
result = hdlc_open(dev);
@@ -229,13 +213,12 @@ static int n2_open(struct net_device *dev)
return 0;
}
-
-
static int n2_close(struct net_device *dev)
{
port_t *port = dev_to_port(dev);
int io = port->card->io;
- u8 mcr = inb(io+N2_MCR) | (port->phy_node ? TX422_PORT1 : TX422_PORT0);
+ u8 mcr = inb(io + N2_MCR) |
+ (port->phy_node ? TX422_PORT1 : TX422_PORT0);
sca_close(dev);
mcr |= port->phy_node ? DTR_PORT1 : DTR_PORT0; /* set DTR OFF */
@@ -244,29 +227,30 @@ static int n2_close(struct net_device *dev)
return 0;
}
-
-
-static int n2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int n2_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;
- port_t *port = dev_to_port(dev);
-
#ifdef DEBUG_RINGS
if (cmd == SIOCDEVPRIVATE) {
sca_dump_rings(dev);
return 0;
}
#endif
- if (cmd != SIOCWANDEV)
- return hdlc_ioctl(dev, ifr, cmd);
+ return -EOPNOTSUPP;
+}
- switch(ifr->ifr_settings.type) {
+static int n2_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))
@@ -274,7 +258,7 @@ static int n2_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))
@@ -294,12 +278,10 @@ static int n2_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 n2_destroy_card(card_t *card)
{
int cnt;
@@ -307,6 +289,7 @@ static void n2_destroy_card(card_t *card)
for (cnt = 0; cnt < 2; cnt++)
if (card->ports[cnt].card) {
struct net_device *dev = port_to_dev(&card->ports[cnt]);
+
unregister_hdlc_device(dev);
}
@@ -331,7 +314,8 @@ static const struct net_device_ops n2_ops = {
.ndo_open = n2_open,
.ndo_stop = n2_close,
.ndo_start_xmit = hdlc_start_xmit,
- .ndo_do_ioctl = n2_ioctl,
+ .ndo_siocwandev = n2_ioctl,
+ .ndo_siocdevprivate = n2_siocdevprivate,
};
static int __init n2_run(unsigned long io, unsigned long irq,
@@ -357,7 +341,7 @@ static int __init n2_run(unsigned long io, unsigned long irq,
}
card = kzalloc(sizeof(card_t), GFP_KERNEL);
- if (card == NULL)
+ if (!card)
return -ENOBUFS;
card->ports[0].dev = alloc_hdlcdev(&card->ports[0]);
@@ -489,11 +473,9 @@ static int __init n2_run(unsigned long io, unsigned long irq,
return 0;
}
-
-
static int __init n2_init(void)
{
- if (hw==NULL) {
+ if (!hw) {
#ifdef MODULE
pr_info("no card initialized\n");
#endif
@@ -518,7 +500,7 @@ static int __init n2_init(void)
if (*hw++ != ',')
break;
- while(1) {
+ while (1) {
if (*hw == '0' && !valid[0])
valid[0] = 1; /* Port 0 enabled */
else if (*hw == '1' && !valid[1])
@@ -536,25 +518,24 @@ static int __init n2_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 n2_cleanup(void)
{
card_t *card = first_card;
while (card) {
card_t *ptr = card;
+
card = card->next_card;
n2_destroy_card(ptr);
}
}
-
module_init(n2_init);
module_exit(n2_cleanup);
generated by cgit (git 2.34.1) at 2025-12-24 23:14:01 +0000