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path: root/drivers/net/hamradio/dmascc.c
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Diffstat (limited to 'drivers/net/hamradio/dmascc.c')
-rw-r--r--drivers/net/hamradio/dmascc.c131
1 files changed, 53 insertions, 78 deletions
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index c9a46b89942..6636022a102 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -21,6 +21,7 @@
#include <linux/module.h>
+#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/if_arp.h>
@@ -31,11 +32,11 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/netdevice.h>
+#include <linux/slab.h>
#include <linux/rtnetlink.h>
#include <linux/sockios.h>
#include <linux/workqueue.h>
-#include <asm/atomic.h>
-#include <asm/bitops.h>
+#include <linux/atomic.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -195,7 +196,7 @@ struct scc_priv {
int chip;
struct net_device *dev;
struct scc_info *info;
- struct net_device_stats stats;
+
int channel;
int card_base, scc_cmd, scc_data;
int tmr_cnt, tmr_ctrl, tmr_mode;
@@ -239,7 +240,6 @@ static int scc_open(struct net_device *dev);
static int scc_close(struct net_device *dev);
static int scc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
static int scc_send_packet(struct sk_buff *skb, struct net_device *dev);
-static struct net_device_stats *scc_get_stats(struct net_device *dev);
static int scc_set_mac_address(struct net_device *dev, void *sa);
static inline void tx_on(struct scc_priv *priv);
@@ -249,10 +249,10 @@ static void start_timer(struct scc_priv *priv, int t, int r15);
static inline unsigned char random(void);
static inline void z8530_isr(struct scc_info *info);
-static irqreturn_t scc_isr(int irq, void *dev_id, struct pt_regs *regs);
+static irqreturn_t scc_isr(int irq, void *dev_id);
static void rx_isr(struct scc_priv *priv);
static void special_condition(struct scc_priv *priv, int rc);
-static void rx_bh(void *arg);
+static void rx_bh(struct work_struct *);
static void tx_isr(struct scc_priv *priv);
static void es_isr(struct scc_priv *priv);
static void tm_isr(struct scc_priv *priv);
@@ -262,14 +262,8 @@ static void tm_isr(struct scc_priv *priv);
static int io[MAX_NUM_DEVS] __initdata = { 0, };
-/* Beware! hw[] is also used in cleanup_module(). */
-static struct scc_hardware hw[NUM_TYPES] __initdata_or_module = HARDWARE;
-static char ax25_broadcast[7] __initdata =
- { 'Q' << 1, 'S' << 1, 'T' << 1, ' ' << 1, ' ' << 1, ' ' << 1,
-'0' << 1 };
-static char ax25_test[7] __initdata =
- { 'L' << 1, 'I' << 1, 'N' << 1, 'U' << 1, 'X' << 1, ' ' << 1,
-'1' << 1 };
+/* Beware! hw[] is also used in dmascc_exit(). */
+static struct scc_hardware hw[NUM_TYPES] = HARDWARE;
/* Global variables */
@@ -338,8 +332,8 @@ static int __init dmascc_init(void)
for (i = 0; i < MAX_NUM_DEVS && io[i]; i++) {
j = (io[i] -
hw[h].io_region) / hw[h].io_delta;
- if (j >= 0 && j < hw[h].num_devs
- && hw[h].io_region +
+ if (j >= 0 && j < hw[h].num_devs &&
+ hw[h].io_region +
j * hw[h].io_delta == io[i]) {
base[j] = io[i];
}
@@ -403,8 +397,8 @@ static int __init dmascc_init(void)
t_val =
inb(t1[i]) + (inb(t1[i]) << 8);
/* Also check whether counter did wrap */
- if (t_val == 0
- || t_val > TMR_0_HZ / HZ * 10)
+ if (t_val == 0 ||
+ t_val > TMR_0_HZ / HZ * 10)
counting[i] = 0;
delay[i] = jiffies - start[i];
}
@@ -443,10 +437,18 @@ static void __init dev_setup(struct net_device *dev)
dev->mtu = 1500;
dev->addr_len = AX25_ADDR_LEN;
dev->tx_queue_len = 64;
- memcpy(dev->broadcast, ax25_broadcast, AX25_ADDR_LEN);
- memcpy(dev->dev_addr, ax25_test, AX25_ADDR_LEN);
+ memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
}
+static const struct net_device_ops scc_netdev_ops = {
+ .ndo_open = scc_open,
+ .ndo_stop = scc_close,
+ .ndo_start_xmit = scc_send_packet,
+ .ndo_do_ioctl = scc_ioctl,
+ .ndo_set_mac_address = scc_set_mac_address,
+};
+
static int __init setup_adapter(int card_base, int type, int n)
{
int i, irq, chip;
@@ -459,17 +461,10 @@ static int __init setup_adapter(int card_base, int type, int n)
int scc_base = card_base + hw[type].scc_offset;
char *chipnames[] = CHIPNAMES;
- /* Allocate memory */
- info = kmalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA);
- if (!info) {
- printk(KERN_ERR "dmascc: "
- "could not allocate memory for %s at %#3x\n",
- hw[type].name, card_base);
- goto out;
- }
-
/* Initialize what is necessary for write_scc and write_scc_data */
- memset(info, 0, sizeof(struct scc_info));
+ info = kzalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA);
+ if (!info)
+ goto out;
info->dev[0] = alloc_netdev(0, "", dev_setup);
if (!info->dev[0]) {
@@ -579,19 +574,13 @@ static int __init setup_adapter(int card_base, int type, int n)
priv->param.clocks = TCTRxCP | RCRTxCP;
priv->param.persist = 256;
priv->param.dma = -1;
- INIT_WORK(&priv->rx_work, rx_bh, priv);
- dev->priv = priv;
+ INIT_WORK(&priv->rx_work, rx_bh);
+ dev->ml_priv = priv;
sprintf(dev->name, "dmascc%i", 2 * n + i);
dev->base_addr = card_base;
dev->irq = irq;
- dev->open = scc_open;
- dev->stop = scc_close;
- dev->do_ioctl = scc_ioctl;
- dev->hard_start_xmit = scc_send_packet;
- dev->get_stats = scc_get_stats;
- dev->hard_header = ax25_hard_header;
- dev->rebuild_header = ax25_rebuild_header;
- dev->set_mac_address = scc_set_mac_address;
+ dev->netdev_ops = &scc_netdev_ops;
+ dev->header_ops = &ax25_header_ops;
}
if (register_netdev(info->dev[0])) {
printk(KERN_ERR "dmascc: could not register %s\n",
@@ -729,7 +718,7 @@ static int read_scc_data(struct scc_priv *priv)
static int scc_open(struct net_device *dev)
{
- struct scc_priv *priv = dev->priv;
+ struct scc_priv *priv = dev->ml_priv;
struct scc_info *info = priv->info;
int card_base = priv->card_base;
@@ -871,7 +860,7 @@ static int scc_open(struct net_device *dev)
static int scc_close(struct net_device *dev)
{
- struct scc_priv *priv = dev->priv;
+ struct scc_priv *priv = dev->ml_priv;
struct scc_info *info = priv->info;
int card_base = priv->card_base;
@@ -900,7 +889,7 @@ static int scc_close(struct net_device *dev)
static int scc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
- struct scc_priv *priv = dev->priv;
+ struct scc_priv *priv = dev->ml_priv;
switch (cmd) {
case SIOCGSCCPARAM:
@@ -927,7 +916,7 @@ static int scc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
static int scc_send_packet(struct sk_buff *skb, struct net_device *dev)
{
- struct scc_priv *priv = dev->priv;
+ struct scc_priv *priv = dev->ml_priv;
unsigned long flags;
int i;
@@ -936,7 +925,7 @@ static int scc_send_packet(struct sk_buff *skb, struct net_device *dev)
/* Transfer data to DMA buffer */
i = priv->tx_head;
- memcpy(priv->tx_buf[i], skb->data + 1, skb->len - 1);
+ skb_copy_from_linear_data_offset(skb, 1, priv->tx_buf[i], skb->len - 1);
priv->tx_len[i] = skb->len - 1;
/* Clear interrupts while we touch our circular buffers */
@@ -966,15 +955,7 @@ static int scc_send_packet(struct sk_buff *skb, struct net_device *dev)
spin_unlock_irqrestore(&priv->ring_lock, flags);
dev_kfree_skb(skb);
- return 0;
-}
-
-
-static struct net_device_stats *scc_get_stats(struct net_device *dev)
-{
- struct scc_priv *priv = dev->priv;
-
- return &priv->stats;
+ return NETDEV_TX_OK;
}
@@ -1086,21 +1067,16 @@ static inline void rx_off(struct scc_priv *priv)
static void start_timer(struct scc_priv *priv, int t, int r15)
{
- unsigned long flags;
-
outb(priv->tmr_mode, priv->tmr_ctrl);
if (t == 0) {
tm_isr(priv);
} else if (t > 0) {
- save_flags(flags);
- cli();
outb(t & 0xFF, priv->tmr_cnt);
outb((t >> 8) & 0xFF, priv->tmr_cnt);
if (priv->type != TYPE_TWIN) {
write_scc(priv, R15, r15 | CTSIE);
priv->rr0 |= CTS;
}
- restore_flags(flags);
}
}
@@ -1142,7 +1118,7 @@ static inline void z8530_isr(struct scc_info *info)
}
-static irqreturn_t scc_isr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t scc_isr(int irq, void *dev_id)
{
struct scc_info *info = dev_id;
@@ -1230,17 +1206,17 @@ static void special_condition(struct scc_priv *priv, int rc)
}
if (priv->rx_over) {
/* We had an overrun */
- priv->stats.rx_errors++;
+ priv->dev->stats.rx_errors++;
if (priv->rx_over == 2)
- priv->stats.rx_length_errors++;
+ priv->dev->stats.rx_length_errors++;
else
- priv->stats.rx_fifo_errors++;
+ priv->dev->stats.rx_fifo_errors++;
priv->rx_over = 0;
} else if (rc & CRC_ERR) {
/* Count invalid CRC only if packet length >= minimum */
if (cb >= 15) {
- priv->stats.rx_errors++;
- priv->stats.rx_crc_errors++;
+ priv->dev->stats.rx_errors++;
+ priv->dev->stats.rx_crc_errors++;
}
} else {
if (cb >= 15) {
@@ -1253,8 +1229,8 @@ static void special_condition(struct scc_priv *priv, int rc)
priv->rx_count++;
schedule_work(&priv->rx_work);
} else {
- priv->stats.rx_errors++;
- priv->stats.rx_over_errors++;
+ priv->dev->stats.rx_errors++;
+ priv->dev->stats.rx_over_errors++;
}
}
}
@@ -1272,9 +1248,9 @@ static void special_condition(struct scc_priv *priv, int rc)
}
-static void rx_bh(void *arg)
+static void rx_bh(struct work_struct *ugli_api)
{
- struct scc_priv *priv = arg;
+ struct scc_priv *priv = container_of(ugli_api, struct scc_priv, rx_work);
int i = priv->rx_tail;
int cb;
unsigned long flags;
@@ -1289,7 +1265,7 @@ static void rx_bh(void *arg)
skb = dev_alloc_skb(cb + 1);
if (skb == NULL) {
/* Drop packet */
- priv->stats.rx_dropped++;
+ priv->dev->stats.rx_dropped++;
} else {
/* Fill buffer */
data = skb_put(skb, cb + 1);
@@ -1297,9 +1273,8 @@ static void rx_bh(void *arg)
memcpy(&data[1], priv->rx_buf[i], cb);
skb->protocol = ax25_type_trans(skb, priv->dev);
netif_rx(skb);
- priv->dev->last_rx = jiffies;
- priv->stats.rx_packets++;
- priv->stats.rx_bytes += cb;
+ priv->dev->stats.rx_packets++;
+ priv->dev->stats.rx_bytes += cb;
}
spin_lock_irqsave(&priv->ring_lock, flags);
/* Move tail */
@@ -1366,15 +1341,15 @@ static void es_isr(struct scc_priv *priv)
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN);
if (res) {
/* Update packet statistics */
- priv->stats.tx_errors++;
- priv->stats.tx_fifo_errors++;
+ priv->dev->stats.tx_errors++;
+ priv->dev->stats.tx_fifo_errors++;
/* Other underrun interrupts may already be waiting */
write_scc(priv, R0, RES_EXT_INT);
write_scc(priv, R0, RES_EXT_INT);
} else {
/* Update packet statistics */
- priv->stats.tx_packets++;
- priv->stats.tx_bytes += priv->tx_len[i];
+ priv->dev->stats.tx_packets++;
+ priv->dev->stats.tx_bytes += priv->tx_len[i];
/* Remove frame from FIFO */
priv->tx_tail = (i + 1) % NUM_TX_BUF;
priv->tx_count--;
@@ -1440,7 +1415,7 @@ static void tm_isr(struct scc_priv *priv)
write_scc(priv, R15, DCDIE);
priv->rr0 = read_scc(priv, R0);
if (priv->rr0 & DCD) {
- priv->stats.collisions++;
+ priv->dev->stats.collisions++;
rx_on(priv);
priv->state = RX_ON;
} else {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-07 11:03:23 +0000