/*****************************************************************************/
-#include <linux/config.h>
+#include <linux/crc-ccitt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/workqueue.h>
#include <linux/fs.h>
#include <linux/parport.h>
-#include <linux/smp_lock.h>
-#include <asm/uaccess.h>
#include <linux/if_arp.h>
-#include <linux/kmod.h>
#include <linux/hdlcdrv.h>
#include <linux/baycom.h>
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-/* prototypes for ax25_encapsulate and ax25_rebuild_header */
+#include <linux/jiffies.h>
+#include <linux/random.h>
#include <net/ax25.h>
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
-#include <linux/crc-ccitt.h>
+#include <asm/uaccess.h>
/* --------------------------------------------------------------------- */
int magic;
struct pardevice *pdev;
+ struct net_device *dev;
unsigned int work_running;
- struct work_struct run_work;
+ struct delayed_work run_work;
unsigned int modem;
unsigned int bitrate;
unsigned char stat;
* measure the interrupt frequency
*/
bc->debug_vals.cur_intcnt++;
- if ((cur_jiffies - bc->debug_vals.last_jiffies) >= HZ) {
+ if (time_after_eq(cur_jiffies, bc->debug_vals.last_jiffies + HZ)) {
bc->debug_vals.last_jiffies = cur_jiffies;
bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt;
bc->debug_vals.cur_intcnt = 0;
/* ---------------------------------------------------------------------- */
-static void epp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static void epp_interrupt(int irq, void *dev_id)
{
}
}
/* --------------------------------------------------------------------- */
-/*
- * high performance HDLC encoder
- * yes, it's ugly, but generates pretty good code
- */
-
-#define ENCODEITERA(j) \
-({ \
- if (!(notbitstream & (0x1f0 << j))) \
- goto stuff##j; \
- encodeend##j: ; \
-})
-
-#define ENCODEITERB(j) \
-({ \
- stuff##j: \
- bitstream &= ~(0x100 << j); \
- bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) | \
- ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1); \
- numbit++; \
- notbitstream = ~bitstream; \
- goto encodeend##j; \
-})
-
static void encode_hdlc(struct baycom_state *bc)
{
int pkt_len;
unsigned bitstream, notbitstream, bitbuf, numbit, crc;
unsigned char crcarr[2];
+ int j;
if (bc->hdlctx.bufcnt > 0)
return;
pkt_len--;
if (!pkt_len)
bp = crcarr;
- ENCODEITERA(0);
- ENCODEITERA(1);
- ENCODEITERA(2);
- ENCODEITERA(3);
- ENCODEITERA(4);
- ENCODEITERA(5);
- ENCODEITERA(6);
- ENCODEITERA(7);
- goto enditer;
- ENCODEITERB(0);
- ENCODEITERB(1);
- ENCODEITERB(2);
- ENCODEITERB(3);
- ENCODEITERB(4);
- ENCODEITERB(5);
- ENCODEITERB(6);
- ENCODEITERB(7);
- enditer:
+ for (j = 0; j < 8; j++)
+ if (unlikely(!(notbitstream & (0x1f0 << j)))) {
+ bitstream &= ~(0x100 << j);
+ bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) |
+ ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1);
+ numbit++;
+ notbitstream = ~bitstream;
+ }
numbit += 8;
while (numbit >= 8) {
*wp++ = bitbuf;
/* ---------------------------------------------------------------------- */
-static unsigned short random_seed;
-
-static inline unsigned short random_num(void)
-{
- random_seed = 28629 * random_seed + 157;
- return random_seed;
-}
-
-/* ---------------------------------------------------------------------- */
-
static int transmit(struct baycom_state *bc, int cnt, unsigned char stat)
{
struct parport *pp = bc->pdev->port;
if ((--bc->hdlctx.slotcnt) > 0)
return 0;
bc->hdlctx.slotcnt = bc->ch_params.slottime;
- if ((random_num() % 256) > bc->ch_params.ppersist)
+ if ((random32() % 256) > bc->ch_params.ppersist)
return 0;
}
}
bc->stats.rx_packets++;
}
-#define DECODEITERA(j) \
-({ \
- if (!(notbitstream & (0x0fc << j))) /* flag or abort */ \
- goto flgabrt##j; \
- if ((bitstream & (0x1f8 << j)) == (0xf8 << j)) /* stuffed bit */ \
- goto stuff##j; \
- enditer##j: ; \
-})
-
-#define DECODEITERB(j) \
-({ \
- flgabrt##j: \
- if (!(notbitstream & (0x1fc << j))) { /* abort received */ \
- state = 0; \
- goto enditer##j; \
- } \
- if ((bitstream & (0x1fe << j)) != (0x0fc << j)) /* flag received */ \
- goto enditer##j; \
- if (state) \
- do_rxpacket(dev); \
- bc->hdlcrx.bufcnt = 0; \
- bc->hdlcrx.bufptr = bc->hdlcrx.buf; \
- state = 1; \
- numbits = 7-j; \
- goto enditer##j; \
- stuff##j: \
- numbits--; \
- bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1); \
- goto enditer##j; \
-})
-
static int receive(struct net_device *dev, int cnt)
{
struct baycom_state *bc = netdev_priv(dev);
unsigned char tmp[128];
unsigned char *cp;
int cnt2, ret = 0;
+ int j;
numbits = bc->hdlcrx.numbits;
state = bc->hdlcrx.state;
bitbuf |= (*cp) << 8;
numbits += 8;
notbitstream = ~bitstream;
- DECODEITERA(0);
- DECODEITERA(1);
- DECODEITERA(2);
- DECODEITERA(3);
- DECODEITERA(4);
- DECODEITERA(5);
- DECODEITERA(6);
- DECODEITERA(7);
- goto enddec;
- DECODEITERB(0);
- DECODEITERB(1);
- DECODEITERB(2);
- DECODEITERB(3);
- DECODEITERB(4);
- DECODEITERB(5);
- DECODEITERB(6);
- DECODEITERB(7);
- enddec:
+ for (j = 0; j < 8; j++) {
+
+ /* flag or abort */
+ if (unlikely(!(notbitstream & (0x0fc << j)))) {
+
+ /* abort received */
+ if (!(notbitstream & (0x1fc << j)))
+ state = 0;
+
+ /* not flag received */
+ else if (!(bitstream & (0x1fe << j)) != (0x0fc << j)) {
+ if (state)
+ do_rxpacket(dev);
+ bc->hdlcrx.bufcnt = 0;
+ bc->hdlcrx.bufptr = bc->hdlcrx.buf;
+ state = 1;
+ numbits = 7-j;
+ }
+ }
+
+ /* stuffed bit */
+ else if (unlikely((bitstream & (0x1f8 << j)) == (0xf8 << j))) {
+ numbits--;
+ bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1);
+ }
+ }
while (state && numbits >= 8) {
if (bc->hdlcrx.bufcnt >= TXBUFFER_SIZE) {
state = 0;
#define GETTICK(x)
#endif /* __i386__ */
-static void epp_bh(struct net_device *dev)
+static void epp_bh(struct work_struct *work)
{
+ struct net_device *dev;
struct baycom_state *bc;
struct parport *pp;
unsigned char stat;
unsigned char tmp[2];
unsigned int time1 = 0, time2 = 0, time3 = 0;
int cnt, cnt2;
-
- bc = netdev_priv(dev);
+
+ bc = container_of(work, struct baycom_state, run_work.work);
+ dev = bc->dev;
if (!bc->work_running)
return;
baycom_int_freq(bc);
return -EBUSY;
}
dev->irq = /*pp->irq*/ 0;
- INIT_WORK(&bc->run_work, (void *)(void *)epp_bh, dev);
+ INIT_DELAYED_WORK(&bc->run_work, epp_bh);
bc->work_running = 1;
bc->modem = EPP_CONVENTIONAL;
if (eppconfig(bc))
/* autoprobe baud rate */
tstart = jiffies;
i = 0;
- while ((signed)(jiffies-tstart-HZ/3) < 0) {
+ while (time_before(jiffies, tstart + HZ/3)) {
if (pp->ops->epp_read_addr(pp, &stat, 1, 0) != 1)
goto epptimeout;
if ((stat & (EPP_NRAEF|EPP_NRHF)) == EPP_NRHF) {
*/
static void baycom_probe(struct net_device *dev)
{
- static char ax25_bcast[AX25_ADDR_LEN] = {
- 'Q' << 1, 'S' << 1, 'T' << 1, ' ' << 1, ' ' << 1, ' ' << 1, '0' << 1
- };
- static char ax25_nocall[AX25_ADDR_LEN] = {
- 'L' << 1, 'I' << 1, 'N' << 1, 'U' << 1, 'X' << 1, ' ' << 1, '1' << 1
- };
const struct hdlcdrv_channel_params dflt_ch_params = {
20, 2, 10, 40, 0
};
/* Fill in the fields of the device structure */
bc->skb = NULL;
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
-#else /* CONFIG_AX25 || CONFIG_AX25_MODULE */
- dev->hard_header = NULL;
- dev->rebuild_header = NULL;
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
dev->set_mac_address = baycom_set_mac_address;
dev->type = ARPHRD_AX25; /* AF_AX25 device */
dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
dev->mtu = AX25_DEF_PACLEN; /* eth_mtu is the default */
dev->addr_len = AX25_ADDR_LEN; /* sizeof an ax.25 address */
- memcpy(dev->broadcast, ax25_bcast, AX25_ADDR_LEN);
- memcpy(dev->dev_addr, ax25_nocall, AX25_ADDR_LEN);
+ memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, &null_ax25_address, AX25_ADDR_LEN);
dev->tx_queue_len = 16;
/* New style flags */
/*
* initialize part of the baycom_state struct
*/
+ bc->dev = dev;
bc->magic = BAYCOM_MAGIC;
bc->cfg.fclk = 19666600;
bc->cfg.bps = 9600;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff