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path: root/drivers/net/hamradio/baycom_ser_fdx.c
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Diffstat (limited to 'drivers/net/hamradio/baycom_ser_fdx.c')
-rw-r--r--drivers/net/hamradio/baycom_ser_fdx.c80
1 files changed, 21 insertions, 59 deletions
diff --git a/drivers/net/hamradio/baycom_ser_fdx.c b/drivers/net/hamradio/baycom_ser_fdx.c
index a974727dd9a2..ee5bd3c12040 100644
--- a/drivers/net/hamradio/baycom_ser_fdx.c
+++ b/drivers/net/hamradio/baycom_ser_fdx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*****************************************************************************/
/*
@@ -5,25 +6,10 @@
*
* Copyright (C) 1996-2000 Thomas Sailer (sailer@ife.ee.ethz.ch)
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
* Please note that the GPL allows you to use the driver, NOT the radio.
* In order to use the radio, you need a license from the communications
* authority of your country.
*
- *
* Supported modems
*
* ser12: This is a very simple 1200 baud AFSK modem. The modem consists only
@@ -53,7 +39,6 @@
* baud baud rate (between 300 and 4800)
* irq interrupt line of the port; common values are 4,3
*
- *
* History:
* 0.1 26.06.1996 Adapted from baycom.c and made network driver interface
* 18.10.1996 Changed to new user space access routines (copy_{to,from}_user)
@@ -80,8 +65,9 @@
#include <linux/hdlcdrv.h>
#include <linux/baycom.h>
#include <linux/jiffies.h>
+#include <linux/time64.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -202,40 +188,15 @@ static inline void ser12_set_divisor(struct net_device *dev,
*/
}
-/* --------------------------------------------------------------------- */
-
-#if 0
-static inline unsigned int hweight16(unsigned int w)
- __attribute__ ((unused));
-static inline unsigned int hweight8(unsigned int w)
- __attribute__ ((unused));
-
-static inline unsigned int hweight16(unsigned int w)
-{
- unsigned short res = (w & 0x5555) + ((w >> 1) & 0x5555);
- res = (res & 0x3333) + ((res >> 2) & 0x3333);
- res = (res & 0x0F0F) + ((res >> 4) & 0x0F0F);
- return (res & 0x00FF) + ((res >> 8) & 0x00FF);
-}
-
-static inline unsigned int hweight8(unsigned int w)
-{
- unsigned short res = (w & 0x55) + ((w >> 1) & 0x55);
- res = (res & 0x33) + ((res >> 2) & 0x33);
- return (res & 0x0F) + ((res >> 4) & 0x0F);
-}
-#endif
-
-/* --------------------------------------------------------------------- */
-
-static __inline__ void ser12_rx(struct net_device *dev, struct baycom_state *bc, struct timeval *tv, unsigned char curs)
+static __inline__ void ser12_rx(struct net_device *dev, struct baycom_state *bc, struct timespec64 *ts, unsigned char curs)
{
int timediff;
int bdus8 = bc->baud_us >> 3;
int bdus4 = bc->baud_us >> 2;
int bdus2 = bc->baud_us >> 1;
- timediff = 1000000 + tv->tv_usec - bc->modem.ser12.pll_time;
+ timediff = 1000000 + ts->tv_nsec / NSEC_PER_USEC -
+ bc->modem.ser12.pll_time;
while (timediff >= 500000)
timediff -= 1000000;
while (timediff >= bdus2) {
@@ -287,7 +248,7 @@ static irqreturn_t ser12_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
struct baycom_state *bc = netdev_priv(dev);
- struct timeval tv;
+ struct timespec64 ts;
unsigned char iir, msr;
unsigned int txcount = 0;
@@ -297,7 +258,7 @@ static irqreturn_t ser12_interrupt(int irq, void *dev_id)
if ((iir = inb(IIR(dev->base_addr))) & 1)
return IRQ_NONE;
/* get current time */
- do_gettimeofday(&tv);
+ ktime_get_ts64(&ts);
msr = inb(MSR(dev->base_addr));
/* delta DCD */
if ((msr & 8) && bc->opt_dcd)
@@ -340,7 +301,7 @@ static irqreturn_t ser12_interrupt(int irq, void *dev_id)
}
iir = inb(IIR(dev->base_addr));
} while (!(iir & 1));
- ser12_rx(dev, bc, &tv, msr & 0x10); /* CTS */
+ ser12_rx(dev, bc, &ts, msr & 0x10); /* CTS */
if (bc->modem.ptt && txcount) {
if (bc->modem.ser12.txshreg <= 1) {
bc->modem.ser12.txshreg = 0x10000 | hdlcdrv_getbits(&bc->hdrv);
@@ -412,6 +373,7 @@ static enum uart ser12_check_uart(unsigned int iobase)
static int ser12_open(struct net_device *dev)
{
+ const unsigned int nr_irqs = irq_get_nr_irqs();
struct baycom_state *bc = netdev_priv(dev);
enum uart u;
@@ -445,7 +407,7 @@ static int ser12_open(struct net_device *dev)
outb(0, FCR(dev->base_addr)); /* disable FIFOs */
outb(0x0d, MCR(dev->base_addr));
outb(0, IER(dev->base_addr));
- if (request_irq(dev->irq, ser12_interrupt, IRQF_DISABLED | IRQF_SHARED,
+ if (request_irq(dev->irq, ser12_interrupt, IRQF_SHARED,
"baycom_ser_fdx", dev)) {
release_region(dev->base_addr, SER12_EXTENT);
return -EBUSY;
@@ -501,12 +463,12 @@ static int ser12_close(struct net_device *dev)
/* --------------------------------------------------------------------- */
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
struct hdlcdrv_ioctl *hi, int cmd);
/* --------------------------------------------------------------------- */
-static struct hdlcdrv_ops ser12_ops = {
+static const struct hdlcdrv_ops ser12_ops = {
.drvname = bc_drvname,
.drvinfo = bc_drvinfo,
.open = ser12_open,
@@ -536,7 +498,7 @@ static int baycom_setmode(struct baycom_state *bc, const char *modestr)
/* --------------------------------------------------------------------- */
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
struct hdlcdrv_ioctl *hi, int cmd)
{
struct baycom_state *bc;
@@ -558,7 +520,7 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
sprintf(hi->data.modename, "ser%u", bc->baud / 100);
if (bc->opt_dcd <= 0)
strcat(hi->data.modename, (!bc->opt_dcd) ? "*" : "+");
- if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+ if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
return -EFAULT;
return 0;
@@ -569,8 +531,8 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
return baycom_setmode(bc, hi->data.modename);
case HDLCDRVCTL_MODELIST:
- strcpy(hi->data.modename, "ser12,ser3,ser24");
- if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+ strscpy(hi->data.modename, "ser12,ser3,ser24");
+ if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
return -EFAULT;
return 0;
@@ -579,7 +541,7 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
}
- if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
+ if (copy_from_user(&bi, data, sizeof(bi)))
return -EFAULT;
switch (bi.cmd) {
default:
@@ -594,7 +556,7 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
#endif /* BAYCOM_DEBUG */
}
- if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
+ if (copy_to_user(data, &bi, sizeof(bi)))
return -EFAULT;
return 0;
@@ -612,9 +574,9 @@ static int baud[NR_PORTS] = { [0 ... NR_PORTS-1] = 1200 };
module_param_array(mode, charp, NULL, 0);
MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD");
-module_param_array(iobase, int, NULL, 0);
+module_param_hw_array(iobase, int, ioport, NULL, 0);
MODULE_PARM_DESC(iobase, "baycom io base address");
-module_param_array(irq, int, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
MODULE_PARM_DESC(irq, "baycom irq number");
module_param_array(baud, int, NULL, 0);
MODULE_PARM_DESC(baud, "baycom baud rate (300 to 4800)");
generated by cgit (git 2.34.1) at 2025-12-25 21:48:19 +0000