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092a687dc6
freebsd/sys/dev/cx/if_cx.c
Maxim Sobolev e50d35e6c6 Add new tunable 'net.link.ifqmaxlen' to set default send interface 
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after:	1 month
2010-05-03 07:32:50 +00:00

2562 lines
57 KiB
C
Raw Blame History

/*-
* Cronyx-Sigma adapter driver for FreeBSD.
* Supports PPP/HDLC and Cisco/HDLC protocol in synchronous mode,
* and asyncronous channels with full modem control.
* Keepalive protocol implemented in both Cisco and PPP modes.
*
* Copyright (C) 1994-2002 Cronyx Engineering.
* Author: Serge Vakulenko, <vak@cronyx.ru>
*
* Copyright (C) 1999-2004 Cronyx Engineering.
* Rewritten on DDK, ported to NETGRAPH, rewritten for FreeBSD 3.x-5.x by
* Kurakin Roman, <rik@cronyx.ru>
*
* This software is distributed with NO WARRANTIES, not even the implied
* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Authors grant any other persons or organisations a permission to use,
* modify and redistribute this software in source and binary forms,
* as long as this message is kept with the software, all derivative
* works or modified versions.
*
* Cronyx Id: if_cx.c,v 1.1.2.34 2004/06/23 17:09:13 rik Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/mbuf.h>
#include <sys/sockio.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/conf.h>
#include <sys/errno.h>
#include <sys/serial.h>
#include <sys/tty.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <sys/fcntl.h>
#include <sys/interrupt.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <net/if.h>
#include <machine/cpufunc.h>
#include <machine/cserial.h>
#include <machine/resource.h>
#include <dev/cx/machdep.h>
#include <dev/cx/cxddk.h>
#include <dev/cx/cronyxfw.h>
#include "opt_ng_cronyx.h"
#ifdef NETGRAPH_CRONYX
# include "opt_netgraph.h"
# include <netgraph/ng_message.h>
# include <netgraph/netgraph.h>
# include <dev/cx/ng_cx.h>
#else
# include <net/if_types.h>
# include <net/if_sppp.h>
# define PP_CISCO IFF_LINK2
# include <net/bpf.h>
#endif
#define NCX 1
/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */
#ifndef PP_FR
#define PP_FR 0
#endif
#define CX_DEBUG(d,s) ({if (d->chan->debug) {\
printf ("%s: ", d->name); printf s;}})
#define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\
printf ("%s: ", d->name); printf s;}})
#define CX_LOCK_NAME "cxX"
#define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx)
#define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx)
#define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED)
typedef struct _async_q {
int beg;
int end;
#define BF_SZ 14400
int buf[BF_SZ+1];
} async_q;
#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ)
#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\
(q)->end = ((q)->end + 1)%BF_SZ;}
#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\
(q)->beg = ((q)->beg + 1)%BF_SZ;}
static void cx_identify __P((driver_t *, device_t));
static int cx_probe __P((device_t));
static int cx_attach __P((device_t));
static int cx_detach __P((device_t));
static t_open_t cx_topen;
static t_modem_t cx_tmodem;
static t_close_t cx_tclose;
static device_method_t cx_isa_methods [] = {
DEVMETHOD(device_identify, cx_identify),
DEVMETHOD(device_probe, cx_probe),
DEVMETHOD(device_attach, cx_attach),
DEVMETHOD(device_detach, cx_detach),
{0, 0}
};
typedef struct _cx_dma_mem_t {
unsigned long phys;
void *virt;
size_t size;
bus_dma_tag_t dmat;
bus_dmamap_t mapp;
} cx_dma_mem_t;
typedef struct _drv_t {
char name [8];
cx_chan_t *chan;
cx_board_t *board;
cx_dma_mem_t dmamem;
struct tty *tty;
struct callout dcd_timeout_handle;
unsigned callout;
unsigned lock;
int open_dev;
int cd;
int running;
#ifdef NETGRAPH
char nodename [NG_NODESIZ];
hook_p hook;
hook_p debug_hook;
node_p node;
struct ifqueue lo_queue;
struct ifqueue hi_queue;
#else
struct ifqueue queue;
struct ifnet *ifp;
#endif
short timeout;
struct callout timeout_handle;
struct cdev *devt;
async_q aqueue;
#define CX_READ 1
#define CX_WRITE 2
int intr_action;
short atimeout;
} drv_t;
typedef struct _bdrv_t {
cx_board_t *board;
struct resource *base_res;
struct resource *drq_res;
struct resource *irq_res;
int base_rid;
int drq_rid;
int irq_rid;
void *intrhand;
drv_t channel [NCHAN];
struct mtx cx_mtx;
} bdrv_t;
static driver_t cx_isa_driver = {
"cx",
cx_isa_methods,
sizeof (bdrv_t),
};
static devclass_t cx_devclass;
extern long csigma_fw_len;
extern const char *csigma_fw_version;
extern const char *csigma_fw_date;
extern const char *csigma_fw_copyright;
extern const cr_dat_tst_t csigma_fw_tvec[];
extern const u_char csigma_fw_data[];
static void cx_oproc (struct tty *tp);
static int cx_param (struct tty *tp, struct termios *t);
static void cx_stop (struct tty *tp, int flag);
static void cx_receive (cx_chan_t *c, char *data, int len);
static void cx_transmit (cx_chan_t *c, void *attachment, int len);
static void cx_error (cx_chan_t *c, int data);
static void cx_modem (cx_chan_t *c);
static void cx_up (drv_t *d);
static void cx_start (drv_t *d);
static void cx_softintr (void *);
static void *cx_fast_ih;
static void cx_down (drv_t *d);
static void cx_watchdog (drv_t *d);
static void cx_watchdog_timer (void *arg);
static void cx_carrier (void *arg);
#ifdef NETGRAPH
extern struct ng_type typestruct;
#else
static void cx_ifstart (struct ifnet *ifp);
static void cx_tlf (struct sppp *sp);
static void cx_tls (struct sppp *sp);
static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
static void cx_initialize (void *softc);
#endif
static cx_board_t *adapter [NCX];
static drv_t *channel [NCX*NCHAN];
static struct callout led_timo [NCX];
static struct callout timeout_handle;
static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td);
static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td);
static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td);
static struct cdevsw cx_cdevsw = {
.d_version = D_VERSION,
.d_open = cx_open,
.d_close = cx_close,
.d_ioctl = cx_ioctl,
.d_name = "cx",
.d_flags = D_TTY,
};
static int MY_SOFT_INTR;
/*
* Print the mbuf chain, for debug purposes only.
*/
static void printmbuf (struct mbuf *m)
{
printf ("mbuf:");
for (; m; m=m->m_next) {
if (m->m_flags & M_PKTHDR)
printf (" HDR %d:", m->m_pkthdr.len);
if (m->m_flags & M_EXT)
printf (" EXT:");
printf (" %d", m->m_len);
}
printf ("\n");
}
/*
* Make an mbuf from data.
*/
static struct mbuf *makembuf (void *buf, u_int len)
{
struct mbuf *m, *o, *p;
MGETHDR (m, M_DONTWAIT, MT_DATA);
if (! m)
return 0;
if (len >= MINCLSIZE)
MCLGET (m, M_DONTWAIT);
m->m_pkthdr.len = len;
m->m_len = 0;
p = m;
while (len) {
u_int n = M_TRAILINGSPACE (p);
if (n > len)
n = len;
if (! n) {
/* Allocate new mbuf. */
o = p;
MGET (p, M_DONTWAIT, MT_DATA);
if (! p) {
m_freem (m);
return 0;
}
if (len >= MINCLSIZE)
MCLGET (p, M_DONTWAIT);
p->m_len = 0;
o->m_next = p;
n = M_TRAILINGSPACE (p);
if (n > len)
n = len;
}
bcopy (buf, mtod (p, caddr_t) + p->m_len, n);
p->m_len += n;
buf = n + (char*) buf;
len -= n;
}
return m;
}
/*
* Recover after lost transmit interrupts.
*/
static void cx_timeout (void *arg)
{
drv_t *d;
int s, i, k;
for (i = 0; i < NCX; i++) {
if (adapter[i] == NULL)
continue;
for (k = 0; k < NCHAN; ++k) {
d = channel[i * NCHAN + k];
if (! d)
continue;
s = splhigh ();
CX_LOCK ((bdrv_t *)d->board->sys);
if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) {
d->tty->t_state &= ~TS_BUSY;
if (d->tty->t_dev) {
d->intr_action |= CX_WRITE;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
CX_DEBUG (d, ("cx_timeout\n"));
}
if (d->atimeout)
d->atimeout--;
CX_UNLOCK ((bdrv_t *)d->board->sys);
splx (s);
}
}
callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
}
static void cx_led_off (void *arg)
{
cx_board_t *b = arg;
bdrv_t *bd = b->sys;
int s;
s = splhigh ();
CX_LOCK (bd);
cx_led (b, 0);
CX_UNLOCK (bd);
splx (s);
}
/*
* Activate interrupt handler from DDK.
*/
static void cx_intr (void *arg)
{
bdrv_t *bd = arg;
cx_board_t *b = bd->board;
#ifndef NETGRAPH
int i;
#endif
int s = splhigh ();
CX_LOCK (bd);
/* Turn LED on. */
cx_led (b, 1);
cx_int_handler (b);
/* Turn LED off 50 msec later. */
callout_reset (&led_timo[b->num], hz/20, cx_led_off, b);
CX_UNLOCK (bd);
splx (s);
#ifndef NETGRAPH
/* Pass packets in a lock-free state */
for (i = 0; i < NCHAN && b->chan[i].type; i++) {
drv_t *d = b->chan[i].sys;
struct mbuf *m;
if (!d || !d->running)
continue;
while (_IF_QLEN(&d->queue)) {
IF_DEQUEUE (&d->queue,m);
if (!m)
continue;
sppp_input (d->ifp, m);
}
}
#endif
}
static int probe_irq (cx_board_t *b, int irq)
{
int mask, busy, cnt;
/* Clear pending irq, if any. */
cx_probe_irq (b, -irq);
DELAY (100);
for (cnt=0; cnt<5; ++cnt) {
/* Get the mask of pending irqs, assuming they are busy.
* Activate the adapter on given irq. */
busy = cx_probe_irq (b, irq);
DELAY (100);
/* Get the mask of active irqs.
* Deactivate our irq. */
mask = cx_probe_irq (b, -irq);
DELAY (100);
if ((mask & ~busy) == 1 << irq) {
cx_probe_irq (b, 0);
/* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n",
b->num, irq, mask, busy); */
return 1;
}
}
/* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n",
b->num, irq, mask, busy); */
cx_probe_irq (b, 0);
return 0;
}
static short porttab [] = {
0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
};
static char dmatab [] = { 7, 6, 5, 0 };
static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 };
static int cx_is_free_res (device_t dev, int rid, int type, u_long start,
u_long end, u_long count)
{
struct resource *res;
if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count,
RF_ALLOCATED)))
return 0;
bus_release_resource (dev, type, rid, res);
return 1;
}
static void cx_identify (driver_t *driver, device_t dev)
{
u_long iobase, rescount;
int devcount;
device_t *devices;
device_t child;
devclass_t my_devclass;
int i, k;
if ((my_devclass = devclass_find ("cx")) == NULL)
return;
devclass_get_devices (my_devclass, &devices, &devcount);
if (devcount == 0) {
/* We should find all devices by our self. We could alter other
* devices, but we don't have a choise
*/
for (i = 0; (iobase = porttab [i]) != 0; i++) {
if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
iobase, iobase + NPORT, NPORT))
continue;
if (cx_probe_board (iobase, -1, -1) == 0)
continue;
devcount++;
child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx",
-1);
if (child == NULL)
return;
device_set_desc_copy (child, "Cronyx Sigma");
device_set_driver (child, driver);
bus_set_resource (child, SYS_RES_IOPORT, 0,
iobase, NPORT);
if (devcount >= NCX)
break;
}
} else {
static short porttab [] = {
0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
};
/* Lets check user choise.
*/
for (k = 0; k < devcount; k++) {
if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
&iobase, &rescount) != 0)
continue;
for (i = 0; porttab [i] != 0; i++) {
if (porttab [i] != iobase)
continue;
if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
iobase, iobase + NPORT, NPORT))
continue;
if (cx_probe_board (iobase, -1, -1) == 0)
continue;
porttab [i] = -1;
device_set_desc_copy (devices[k], "Cronyx Sigma");
break;
}
if (porttab [i] == 0) {
device_delete_child (
device_get_parent (devices[k]),
devices [k]);
devices[k] = 0;
continue;
}
}
for (k = 0; k < devcount; k++) {
if (devices[k] == 0)
continue;
if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
&iobase, &rescount) == 0)
continue;
for (i = 0; (iobase = porttab [i]) != 0; i++) {
if (porttab [i] == -1) {
continue;
}
if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
iobase, iobase + NPORT, NPORT))
continue;
if (cx_probe_board (iobase, -1, -1) == 0)
continue;
bus_set_resource (devices[k], SYS_RES_IOPORT, 0,
iobase, NPORT);
porttab [i] = -1;
device_set_desc_copy (devices[k], "Cronyx Sigma");
break;
}
if (porttab [i] == 0) {
device_delete_child (
device_get_parent (devices[k]),
devices [k]);
}
}
free (devices, M_TEMP);
}
return;
}
static int cx_probe (device_t dev)
{
int unit = device_get_unit (dev);
int i;
u_long iobase, rescount;
if (!device_get_desc (dev) ||
strcmp (device_get_desc (dev), "Cronyx Sigma"))
return ENXIO;
if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) {
printf ("cx%d: Couldn't get IOPORT\n", unit);
return ENXIO;
}
if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
iobase, iobase + NPORT, NPORT)) {
printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase);
return ENXIO;
}
for (i = 0; porttab [i] != 0; i++) {
if (porttab [i] == iobase) {
porttab [i] = -1;
break;
}
}
if (porttab [i] == 0) {
return ENXIO;
}
if (!cx_probe_board (iobase, -1, -1)) {
printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase);
return ENXIO;
}
return 0;
}
static void
cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
unsigned long *addr;
if (error)
return;
KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
addr = arg;
*addr = segs->ds_addr;
}
static int
cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem)
{
int error;
error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT,
BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1,
dmem->size, 0, NULL, NULL, &dmem->dmat);
if (error) {
if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
else printf ("cx%d: ", bnum);
printf ("couldn't allocate tag for dma memory\n");
return 0;
}
error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp);
if (error) {
if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
else printf ("cx%d: ", bnum);
printf ("couldn't allocate mem for dma memory\n");
bus_dma_tag_destroy (dmem->dmat);
return 0;
}
error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt,
dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0);
if (error) {
if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
else printf ("cx%d: ", bnum);
printf ("couldn't load mem map for dma memory\n");
bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
bus_dma_tag_destroy (dmem->dmat);
return 0;
}
return 1;
}
static void
cx_bus_dma_mem_free (cx_dma_mem_t *dmem)
{
bus_dmamap_unload (dmem->dmat, dmem->mapp);
bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
bus_dma_tag_destroy (dmem->dmat);
}
/*
* The adapter is present, initialize the driver structures.
*/
static int cx_attach (device_t dev)
{
bdrv_t *bd = device_get_softc (dev);
u_long iobase, drq, irq, rescount;
int unit = device_get_unit (dev);
char *cx_ln = CX_LOCK_NAME;
cx_board_t *b;
cx_chan_t *c;
drv_t *d;
int i;
int s;
KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit));
bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount);
bd->base_rid = 0;
bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid,
iobase, iobase + NPORT, NPORT, RF_ACTIVE);
if (! bd->base_res) {
printf ("cx%d: cannot allocate base address\n", unit);
return ENXIO;
}
if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) {
for (i = 0; (drq = dmatab [i]) != 0; i++) {
if (!cx_is_free_res (dev, 0, SYS_RES_DRQ,
drq, drq + 1, 1))
continue;
bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1);
break;
}
if (dmatab[i] == 0) {
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
printf ("cx%d: Couldn't get DRQ\n", unit);
return ENXIO;
}
}
bd->drq_rid = 0;
bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid,
drq, drq + 1, 1, RF_ACTIVE);
if (! bd->drq_res) {
printf ("cx%d: cannot allocate drq\n", unit);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
return ENXIO;
}
if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) {
for (i = 0; (irq = irqtab [i]) != 0; i++) {
if (!cx_is_free_res (dev, 0, SYS_RES_IRQ,
irq, irq + 1, 1))
continue;
bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1);
break;
}
if (irqtab[i] == 0) {
bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
bd->drq_res);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
printf ("cx%d: Couldn't get IRQ\n", unit);
return ENXIO;
}
}
bd->irq_rid = 0;
bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid,
irq, irq + 1, 1, RF_ACTIVE);
if (! bd->irq_res) {
printf ("cx%d: Couldn't allocate irq\n", unit);
bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
bd->drq_res);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
return ENXIO;
}
b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
if (!b) {
printf ("cx:%d: Couldn't allocate memory\n", unit);
return (ENXIO);
}
adapter[unit] = b;
bzero (b, sizeof(cx_board_t));
if (! cx_open_board (b, unit, iobase, irq, drq)) {
printf ("cx%d: error loading firmware\n", unit);
free (b, M_DEVBUF);
bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
bd->irq_res);
bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
bd->drq_res);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
return ENXIO;
}
bd->board = b;
cx_ln[2] = '0' + unit;
mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE);
if (! probe_irq (b, irq)) {
printf ("cx%d: irq %ld not functional\n", unit, irq);
bd->board = 0;
adapter [unit] = 0;
mtx_destroy (&bd->cx_mtx);
free (b, M_DEVBUF);
bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
bd->irq_res);
bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
bd->drq_res);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
return ENXIO;
}
b->sys = bd;
callout_init (&led_timo[b->num], CALLOUT_MPSAFE);
s = splhigh ();
if (bus_setup_intr (dev, bd->irq_res,
INTR_TYPE_NET|INTR_MPSAFE,
NULL, cx_intr, bd, &bd->intrhand)) {
printf ("cx%d: Can't setup irq %ld\n", unit, irq);
bd->board = 0;
b->sys = 0;
adapter [unit] = 0;
mtx_destroy (&bd->cx_mtx);
free (b, M_DEVBUF);
bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
bd->irq_res);
bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
bd->drq_res);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
bd->base_res);
splx (s);
return ENXIO;
}
CX_LOCK (bd);
cx_init (b, b->num, b->port, irq, drq);
cx_setup_board (b, 0, 0, 0);
CX_UNLOCK (bd);
printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name);
for (c=b->chan; c<b->chan+NCHAN; ++c) {
if (c->type == T_NONE)
continue;
d = &bd->channel[c->num];
d->dmamem.size = sizeof(cx_buf_t);
if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem))
continue;
d->board = b;
d->chan = c;
d->open_dev = 0;
c->sys = d;
channel [b->num*NCHAN + c->num] = d;
sprintf (d->name, "cx%d.%d", b->num, c->num);
switch (c->type) {
case T_SYNC_RS232:
case T_SYNC_V35:
case T_SYNC_RS449:
case T_UNIV:
case T_UNIV_RS232:
case T_UNIV_RS449:
case T_UNIV_V35:
callout_init (&d->timeout_handle, CALLOUT_MPSAFE);
#ifdef NETGRAPH
if (ng_make_node_common (&typestruct, &d->node) != 0) {
printf ("%s: cannot make common node\n", d->name);
channel [b->num*NCHAN + c->num] = 0;
c->sys = 0;
cx_bus_dma_mem_free (&d->dmamem);
continue;
}
NG_NODE_SET_PRIVATE (d->node, d);
sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE,
c->board->num*NCHAN + c->num);
if (ng_name_node (d->node, d->nodename)) {
printf ("%s: cannot name node\n", d->nodename);
NG_NODE_UNREF (d->node);
channel [b->num*NCHAN + c->num] = 0;
c->sys = 0;
cx_bus_dma_mem_free (&d->dmamem);
continue;
}
d->lo_queue.ifq_maxlen = ifqmaxlen;
d->hi_queue.ifq_maxlen = ifqmaxlen;
mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
#else /*NETGRAPH*/
d->ifp = if_alloc(IFT_PPP);
if (d->ifp == NULL) {
printf ("%s: cannot if_alloc() common interface\n",
d->name);
channel [b->num*NCHAN + c->num] = 0;
c->sys = 0;
cx_bus_dma_mem_free (&d->dmamem);
continue;
}
d->ifp->if_softc = d;
if_initname (d->ifp, "cx", b->num * NCHAN + c->num);
d->ifp->if_mtu = PP_MTU;
d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
d->ifp->if_ioctl = cx_sioctl;
d->ifp->if_start = cx_ifstart;
d->ifp->if_init = cx_initialize;
d->queue.ifq_maxlen = 2;
mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF);
sppp_attach (d->ifp);
if_attach (d->ifp);
IFP2SP(d->ifp)->pp_tlf = cx_tlf;
IFP2SP(d->ifp)->pp_tls = cx_tls;
/* If BPF is in the kernel, call the attach for it.
* Size of PPP header is 4 bytes. */
bpfattach (d->ifp, DLT_PPP, 4);
#endif /*NETGRAPH*/
}
d->tty = ttyalloc ();
d->tty->t_open = cx_topen;
d->tty->t_close = cx_tclose;
d->tty->t_param = cx_param;
d->tty->t_stop = cx_stop;
d->tty->t_modem = cx_tmodem;
d->tty->t_oproc = cx_oproc;
d->tty->t_sc = d;
CX_LOCK (bd);
cx_start_chan (c, d->dmamem.virt, d->dmamem.phys);
cx_register_receive (c, &cx_receive);
cx_register_transmit (c, &cx_transmit);
cx_register_error (c, &cx_error);
cx_register_modem (c, &cx_modem);
CX_UNLOCK (bd);
ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num);
d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
d->devt->si_drv1 = d;
callout_init (&d->dcd_timeout_handle, CALLOUT_MPSAFE);
}
splx (s);
return 0;
}
static int cx_detach (device_t dev)
{
bdrv_t *bd = device_get_softc (dev);
cx_board_t *b = bd->board;
cx_chan_t *c;
int s;
KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized"));
s = splhigh ();
CX_LOCK (bd);
/* Check if the device is busy (open). */
for (c = b->chan; c < b->chan + NCHAN; ++c) {
drv_t *d = (drv_t*) c->sys;
if (!d || d->chan->type == T_NONE)
continue;
if (d->lock) {
CX_UNLOCK (bd);
splx (s);
return EBUSY;
}
if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
(d->open_dev|0x2)) {
CX_UNLOCK (bd);
splx (s);
return EBUSY;
}
if (d->running) {
CX_UNLOCK (bd);
splx (s);
return EBUSY;
}
}
/* Deactivate the timeout routine. And soft interrupt*/
callout_stop (&led_timo[b->num]);
for (c = b->chan; c < b->chan + NCHAN; ++c) {
drv_t *d = c->sys;
if (!d || d->chan->type == T_NONE)
continue;
callout_stop (&d->dcd_timeout_handle);
}
CX_UNLOCK (bd);
bus_teardown_intr (dev, bd->irq_res, bd->intrhand);
bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res);
CX_LOCK (bd);
cx_close_board (b);
/* Detach the interfaces, free buffer memory. */
for (c = b->chan; c < b->chan + NCHAN; ++c) {
drv_t *d = (drv_t*) c->sys;
if (!d || d->chan->type == T_NONE)
continue;
if (d->tty) {
ttyfree (d->tty);
d->tty = NULL;
}
callout_stop (&d->timeout_handle);
#ifdef NETGRAPH
if (d->node) {
ng_rmnode_self (d->node);
NG_NODE_UNREF (d->node);
d->node = NULL;
}
mtx_destroy (&d->lo_queue.ifq_mtx);
mtx_destroy (&d->hi_queue.ifq_mtx);
#else
/* Detach from the packet filter list of interfaces. */
bpfdetach (d->ifp);
/* Detach from the sync PPP list. */
sppp_detach (d->ifp);
if_detach (d->ifp);
if_free(d->ifp);
/* XXXRIK: check interconnection with irq handler */
IF_DRAIN (&d->queue);
mtx_destroy (&d->queue.ifq_mtx);
#endif
destroy_dev (d->devt);
}
cx_led_off (b);
CX_UNLOCK (bd);
callout_drain (&led_timo[b->num]);
for (c = b->chan; c < b->chan + NCHAN; ++c) {
drv_t *d = c->sys;
if (!d || d->chan->type == T_NONE)
continue;
callout_drain (&d->dcd_timeout_handle);
callout_drain (&d->timeout_handle);
}
splx (s);
s = splhigh ();
for (c = b->chan; c < b->chan + NCHAN; ++c) {
drv_t *d = (drv_t*) c->sys;
if (!d || d->chan->type == T_NONE)
continue;
/* Deallocate buffers. */
cx_bus_dma_mem_free (&d->dmamem);
}
bd->board = 0;
adapter [b->num] = 0;
free (b, M_DEVBUF);
splx (s);
mtx_destroy (&bd->cx_mtx);
return 0;
}
#ifndef NETGRAPH
static void cx_ifstart (struct ifnet *ifp)
{
drv_t *d = ifp->if_softc;
bdrv_t *bd = d->board->sys;
CX_LOCK (bd);
cx_start (d);
CX_UNLOCK (bd);
}
static void cx_tlf (struct sppp *sp)
{
drv_t *d = SP2IFP(sp)->if_softc;
CX_DEBUG (d, ("cx_tlf\n"));
/* cx_set_dtr (d->chan, 0);*/
/* cx_set_rts (d->chan, 0);*/
if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
sp->pp_down (sp);
}
static void cx_tls (struct sppp *sp)
{
drv_t *d = SP2IFP(sp)->if_softc;
CX_DEBUG (d, ("cx_tls\n"));
if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
sp->pp_up (sp);
}
/*
* Initialization of interface.
* It seems to be never called by upper level.
*/
static void cx_initialize (void *softc)
{
drv_t *d = softc;
CX_DEBUG (d, ("cx_initialize\n"));
}
/*
* Process an ioctl request.
*/
static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
{
drv_t *d = ifp->if_softc;
bdrv_t *bd = d->board->sys;
int error, s, was_up, should_be_up;
/* No socket ioctls while the channel is in async mode. */
if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC)
return EBUSY;
/* Socket ioctls on slave subchannels are not allowed. */
was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
error = sppp_ioctl (ifp, cmd, data);
if (error)
return error;
s = splhigh ();
CX_LOCK (bd);
if (! (ifp->if_flags & IFF_DEBUG))
d->chan->debug = 0;
else
d->chan->debug = d->chan->debug_shadow;
CX_UNLOCK (bd);
splx (s);
switch (cmd) {
default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0;
case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0;
case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0;
case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break;
case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break;
}
/* We get here only in case of SIFFLAGS or SIFADDR. */
s = splhigh ();
CX_LOCK (bd);
should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
if (!was_up && should_be_up) {
/* Interface goes up -- start it. */
cx_up (d);
cx_start (d);
} else if (was_up && !should_be_up) {
/* Interface is going down -- stop it. */
/* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/
cx_down (d);
}
CX_UNLOCK (bd);
splx (s);
return 0;
}
#endif /*NETGRAPH*/
/*
* Stop the interface. Called on splimp().
*/
static void cx_down (drv_t *d)
{
int s = splhigh ();
CX_DEBUG (d, ("cx_down\n"));
cx_set_dtr (d->chan, 0);
cx_set_rts (d->chan, 0);
d->running = 0;
callout_stop (&d->timeout_handle);
splx (s);
}
/*
* Start the interface. Called on splimp().
*/
static void cx_up (drv_t *d)
{
int s = splhigh ();
CX_DEBUG (d, ("cx_up\n"));
cx_set_dtr (d->chan, 1);
cx_set_rts (d->chan, 1);
d->running = 1;
splx (s);
}
/*
* Start output on the (slave) interface. Get another datagram to send
* off of the interface queue, and copy it to the interface
* before starting the output.
*/
static void cx_send (drv_t *d)
{
struct mbuf *m;
u_short len;
CX_DEBUG2 (d, ("cx_send\n"));
/* No output if the interface is down. */
if (! d->running)
return;
/* No output if the modem is off. */
if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan))
return;
if (cx_buf_free (d->chan)) {
/* Get the packet to send. */
#ifdef NETGRAPH
IF_DEQUEUE (&d->hi_queue, m);
if (! m)
IF_DEQUEUE (&d->lo_queue, m);
#else
m = sppp_dequeue (d->ifp);
#endif
if (! m)
return;
#ifndef NETGRAPH
BPF_MTAP (d->ifp, m);
#endif
len = m_length (m, NULL);
if (! m->m_next)
cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t),
len, 0);
else {
u_char buf [DMABUFSZ];
m_copydata (m, 0, len, buf);
cx_send_packet (d->chan, buf, len, 0);
}
m_freem (m);
/* Set up transmit timeout, 10 seconds. */
d->timeout = 10;
}
#ifndef NETGRAPH
d->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
#endif
}
/*
* Start output on the interface.
* Always called on splimp().
*/
static void cx_start (drv_t *d)
{
int s = splhigh ();
if (d->running) {
if (! d->chan->dtr)
cx_set_dtr (d->chan, 1);
if (! d->chan->rts)
cx_set_rts (d->chan, 1);
cx_send (d);
callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
}
splx (s);
}
/*
* Handle transmit timeouts.
* Recover after lost transmit interrupts.
* Always called on splimp().
*/
static void cx_watchdog (drv_t *d)
{
CX_DEBUG (d, ("device timeout\n"));
if (d->running) {
cx_setup_chan (d->chan);
cx_start_chan (d->chan, 0, 0);
cx_set_dtr (d->chan, 1);
cx_set_rts (d->chan, 1);
cx_start (d);
}
}
static void cx_watchdog_timer (void *arg)
{
drv_t *d = arg;
bdrv_t *bd = d->board->sys;
CX_LOCK (bd);
if (d->timeout == 1)
cx_watchdog (d);
if (d->timeout)
d->timeout--;
callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
CX_UNLOCK (bd);
}
/*
* Transmit callback function.
*/
static void cx_transmit (cx_chan_t *c, void *attachment, int len)
{
drv_t *d = c->sys;
if (!d)
return;
if (c->mode == M_ASYNC && d->tty) {
d->tty->t_state &= ~(TS_BUSY | TS_FLUSH);
d->atimeout = 0;
if (d->tty->t_dev) {
d->intr_action |= CX_WRITE;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
return;
}
d->timeout = 0;
#ifndef NETGRAPH
++d->ifp->if_opackets;
d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
#endif
cx_start (d);
}
/*
* Process the received packet.
*/
static void cx_receive (cx_chan_t *c, char *data, int len)
{
drv_t *d = c->sys;
struct mbuf *m;
char *cc = data;
#ifdef NETGRAPH
int error;
#endif
if (!d)
return;
if (c->mode == M_ASYNC && d->tty) {
if (d->tty->t_state & TS_ISOPEN) {
async_q *q = &d->aqueue;
int size = BF_SZ - 1 - AQ_GSZ (q);
if (len <= 0 && !size)
return;
if (len > size) {
c->ierrs++;
cx_error (c, CX_OVERRUN);
len = size - 1;
}
while (len--) {
AQ_PUSH (q, *(unsigned char *)cc);
cc++;
}
d->intr_action |= CX_READ;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
return;
}
if (! d->running)
return;
m = makembuf (data, len);
if (! m) {
CX_DEBUG (d, ("no memory for packet\n"));
#ifndef NETGRAPH
++d->ifp->if_iqdrops;
#endif
return;
}
if (c->debug > 1)
printmbuf (m);
#ifdef NETGRAPH
m->m_pkthdr.rcvif = 0;
NG_SEND_DATA_ONLY (error, d->hook, m);
#else
++d->ifp->if_ipackets;
m->m_pkthdr.rcvif = d->ifp;
/* Check if there's a BPF listener on this interface.
* If so, hand off the raw packet to bpf. */
BPF_TAP (d->ifp, data, len);
IF_ENQUEUE (&d->queue, m);
#endif
}
#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
&& (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
&& (!(tp->t_iflag & PARMRK)\
|| (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
&& !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
&& linesw[tp->t_line]->l_rint == ttyinput)
/*
* Error callback function.
*/
static void cx_error (cx_chan_t *c, int data)
{
drv_t *d = c->sys;
async_q *q;
if (!d)
return;
q = &(d->aqueue);
switch (data) {
case CX_FRAME:
CX_DEBUG (d, ("frame error\n"));
if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
&& (AQ_GSZ (q) < BF_SZ - 1)
&& (!CONDITION((&d->tty->t_termios), (d->tty))
|| !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
AQ_PUSH (q, TTY_FE);
d->intr_action |= CX_READ;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
#ifndef NETGRAPH
else
++d->ifp->if_ierrors;
#endif
break;
case CX_CRC:
CX_DEBUG (d, ("crc error\n"));
if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
&& (AQ_GSZ (q) < BF_SZ - 1)
&& (!CONDITION((&d->tty->t_termios), (d->tty))
|| !(d->tty->t_iflag & INPCK)
|| !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
AQ_PUSH (q, TTY_PE);
d->intr_action |= CX_READ;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
#ifndef NETGRAPH
else
++d->ifp->if_ierrors;
#endif
break;
case CX_OVERRUN:
CX_DEBUG (d, ("overrun error\n"));
#ifdef TTY_OE
if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
&& (AQ_GSZ (q) < BF_SZ - 1)
&& (!CONDITION((&d->tty->t_termios), (d->tty)))) {
AQ_PUSH (q, TTY_OE);
d->intr_action |= CX_READ;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
#endif
#ifndef NETGRAPH
else {
++d->ifp->if_collisions;
++d->ifp->if_ierrors;
}
#endif
break;
case CX_OVERFLOW:
CX_DEBUG (d, ("overflow error\n"));
#ifndef NETGRAPH
if (c->mode != M_ASYNC)
++d->ifp->if_ierrors;
#endif
break;
case CX_UNDERRUN:
CX_DEBUG (d, ("underrun error\n"));
if (c->mode != M_ASYNC) {
d->timeout = 0;
#ifndef NETGRAPH
++d->ifp->if_oerrors;
d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
#endif
cx_start (d);
}
break;
case CX_BREAK:
CX_DEBUG (d, ("break error\n"));
if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
&& (AQ_GSZ (q) < BF_SZ - 1)
&& (!CONDITION((&d->tty->t_termios), (d->tty))
|| !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) {
AQ_PUSH (q, TTY_BI);
d->intr_action |= CX_READ;
MY_SOFT_INTR = 1;
swi_sched (cx_fast_ih, 0);
}
#ifndef NETGRAPH
else
++d->ifp->if_ierrors;
#endif
break;
default:
CX_DEBUG (d, ("error #%d\n", data));
}
}
static int cx_topen (struct tty *tp, struct cdev *dev)
{
bdrv_t *bd;
drv_t *d;
d = tp->t_sc;
CX_DEBUG2 (d, ("cx_open (serial)\n"));
bd = d->board->sys;
if (d->chan->mode != M_ASYNC)
return (EBUSY);
d->open_dev |= 0x2;
CX_LOCK (bd);
cx_start_chan (d->chan, 0, 0);
cx_set_dtr (d->chan, 1);
cx_set_rts (d->chan, 1);
d->cd = cx_get_cd (d->chan);
CX_UNLOCK (bd);
CX_DEBUG2 (d, ("cx_open done\n"));
return 0;
}
static void cx_tclose (struct tty *tp)
{
drv_t *d;
bdrv_t *bd;
d = tp->t_sc;
CX_DEBUG2 (d, ("cx_close\n"));
bd = d->board->sys;
CX_LOCK (bd);
/* Disable receiver.
* Transmitter continues sending the queued data. */
cx_enable_receive (d->chan, 0);
CX_UNLOCK (bd);
d->open_dev &= ~0x2;
}
static int cx_tmodem (struct tty *tp, int sigon, int sigoff)
{
drv_t *d;
bdrv_t *bd;
d = tp->t_sc;
bd = d->board->sys;
CX_LOCK (bd);
if (!sigon && !sigoff) {
if (cx_get_dsr (d->chan)) sigon |= SER_DSR;
if (cx_get_cd (d->chan)) sigon |= SER_DCD;
if (cx_get_cts (d->chan)) sigon |= SER_CTS;
if (d->chan->dtr) sigon |= SER_DTR;
if (d->chan->rts) sigon |= SER_RTS;
CX_UNLOCK (bd);
return sigon;
}
if (sigon & SER_DTR)
cx_set_dtr (d->chan, 1);
if (sigoff & SER_DTR)
cx_set_dtr (d->chan, 0);
if (sigon & SER_RTS)
cx_set_rts (d->chan, 1);
if (sigoff & SER_RTS)
cx_set_rts (d->chan, 0);
CX_UNLOCK (bd);
return (0);
}
static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td)
{
int unit;
drv_t *d;
d = dev->si_drv1;
unit = d->chan->num;
CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n",
unit, flag, mode));
d->open_dev |= 0x1;
CX_DEBUG2 (d, ("cx_open done\n"));
return 0;
}
static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td)
{
drv_t *d;
d = dev->si_drv1;
CX_DEBUG2 (d, ("cx_close\n"));
d->open_dev &= ~0x1;
return 0;
}
static int cx_modem_status (drv_t *d)
{
bdrv_t *bd = d->board->sys;
int status = 0, s = splhigh ();
CX_LOCK (bd);
/* Already opened by someone or network interface is up? */
if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
(d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running))
status = TIOCM_LE; /* always enabled while open */
if (cx_get_dsr (d->chan)) status |= TIOCM_DSR;
if (cx_get_cd (d->chan)) status |= TIOCM_CD;
if (cx_get_cts (d->chan)) status |= TIOCM_CTS;
if (d->chan->dtr) status |= TIOCM_DTR;
if (d->chan->rts) status |= TIOCM_RTS;
CX_UNLOCK (bd);
splx (s);
return status;
}
static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
{
drv_t *d;
bdrv_t *bd;
cx_chan_t *c;
struct serial_statistics *st;
int error, s;
char mask[16];
d = dev->si_drv1;
c = d->chan;
bd = d->board->sys;
switch (cmd) {
case SERIAL_GETREGISTERED:
CX_DEBUG2 (d, ("ioctl: getregistered\n"));
bzero (mask, sizeof(mask));
for (s=0; s<NCX*NCHAN; ++s)
if (channel [s])
mask [s/8] |= 1 << (s & 7);
bcopy (mask, data, sizeof (mask));
return 0;
case SERIAL_GETPORT:
CX_DEBUG2 (d, ("ioctl: getport\n"));
s = splhigh ();
CX_LOCK (bd);
*(int *)data = cx_get_port (c);
CX_UNLOCK (bd);
splx (s);
if (*(int *)data<0)
return (EINVAL);
else
return 0;
case SERIAL_SETPORT:
CX_DEBUG2 (d, ("ioctl: setproto\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
s = splhigh ();
CX_LOCK (bd);
cx_set_port (c, *(int *)data);
CX_UNLOCK (bd);
splx (s);
return 0;
#ifndef NETGRAPH
case SERIAL_GETPROTO:
CX_DEBUG2 (d, ("ioctl: getproto\n"));
s = splhigh ();
CX_LOCK (bd);
strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" :
(IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" :
(d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp");
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETPROTO:
CX_DEBUG2 (d, ("ioctl: setproto\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
if (c->mode == M_ASYNC)
return EBUSY;
if (d->ifp->if_drv_flags & IFF_DRV_RUNNING)
return EBUSY;
if (! strcmp ("cisco", (char*)data)) {
IFP2SP(d->ifp)->pp_flags &= ~(PP_FR);
IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
d->ifp->if_flags |= PP_CISCO;
} else if (! strcmp ("fr", (char*)data)) {
d->ifp->if_flags &= ~(PP_CISCO);
IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE;
} else if (! strcmp ("ppp", (char*)data)) {
IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE);
d->ifp->if_flags &= ~(PP_CISCO);
} else
return EINVAL;
return 0;
case SERIAL_GETKEEPALIVE:
CX_DEBUG2 (d, ("ioctl: getkeepalive\n"));
if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
(d->ifp->if_flags & PP_CISCO) ||
(c->mode == M_ASYNC))
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
*(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0;
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETKEEPALIVE:
CX_DEBUG2 (d, ("ioctl: setkeepalive\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
(d->ifp->if_flags & PP_CISCO))
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
if (*(int*)data)
IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
else
IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE;
CX_UNLOCK (bd);
splx (s);
return 0;
#endif /*NETGRAPH*/
case SERIAL_GETMODE:
CX_DEBUG2 (d, ("ioctl: getmode\n"));
s = splhigh ();
CX_LOCK (bd);
*(int*)data = (c->mode == M_ASYNC) ?
SERIAL_ASYNC : SERIAL_HDLC;
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETMODE:
CX_DEBUG2 (d, ("ioctl: setmode\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
/* Somebody is waiting for carrier? */
if (d->lock)
return EBUSY;
/* /dev/ttyXX is already opened by someone? */
if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
(d->open_dev|0x2))
return EBUSY;
/* Network interface is up?
* Cannot change to async mode. */
if (c->mode != M_ASYNC && d->running &&
(*(int*)data == SERIAL_ASYNC))
return EBUSY;
s = splhigh ();
CX_LOCK (bd);
if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) {
cx_set_mode (c, M_ASYNC);
cx_enable_receive (c, 0);
cx_enable_transmit (c, 0);
} else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) {
if (d->ifp->if_flags & IFF_DEBUG)
c->debug = c->debug_shadow;
cx_set_mode (c, M_HDLC);
cx_enable_receive (c, 1);
cx_enable_transmit (c, 1);
}
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_GETSTAT:
CX_DEBUG2 (d, ("ioctl: getestat\n"));
st = (struct serial_statistics*) data;
s = splhigh ();
CX_LOCK (bd);
st->rintr = c->rintr;
st->tintr = c->tintr;
st->mintr = c->mintr;
st->ibytes = c->ibytes;
st->ipkts = c->ipkts;
st->ierrs = c->ierrs;
st->obytes = c->obytes;
st->opkts = c->opkts;
st->oerrs = c->oerrs;
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_CLRSTAT:
CX_DEBUG2 (d, ("ioctl: clrstat\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
s = splhigh ();
CX_LOCK (bd);
c->rintr = 0;
c->tintr = 0;
c->mintr = 0;
c->ibytes = 0;
c->ipkts = 0;
c->ierrs = 0;
c->obytes = 0;
c->opkts = 0;
c->oerrs = 0;
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_GETBAUD:
CX_DEBUG2 (d, ("ioctl: getbaud\n"));
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
*(long*)data = cx_get_baud(c);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETBAUD:
CX_DEBUG2 (d, ("ioctl: setbaud\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
cx_set_baud (c, *(long*)data);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_GETLOOP:
CX_DEBUG2 (d, ("ioctl: getloop\n"));
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
*(int*)data = cx_get_loop (c);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETLOOP:
CX_DEBUG2 (d, ("ioctl: setloop\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
cx_set_loop (c, *(int*)data);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_GETDPLL:
CX_DEBUG2 (d, ("ioctl: getdpll\n"));
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
*(int*)data = cx_get_dpll (c);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETDPLL:
CX_DEBUG2 (d, ("ioctl: setdpll\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
cx_set_dpll (c, *(int*)data);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_GETNRZI:
CX_DEBUG2 (d, ("ioctl: getnrzi\n"));
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
*(int*)data = cx_get_nrzi (c);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETNRZI:
CX_DEBUG2 (d, ("ioctl: setnrzi\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
if (c->mode == M_ASYNC)
return EINVAL;
s = splhigh ();
CX_LOCK (bd);
cx_set_nrzi (c, *(int*)data);
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_GETDEBUG:
CX_DEBUG2 (d, ("ioctl: getdebug\n"));
s = splhigh ();
CX_LOCK (bd);
*(int*)data = c->debug;
CX_UNLOCK (bd);
splx (s);
return 0;
case SERIAL_SETDEBUG:
CX_DEBUG2 (d, ("ioctl: setdebug\n"));
/* Only for superuser! */
error = priv_check (td, PRIV_DRIVER);
if (error)
return error;
s = splhigh ();
CX_LOCK (bd);
#ifndef NETGRAPH
if (c->mode == M_ASYNC) {
c->debug = *(int*)data;
} else {
/*
* The debug_shadow is always greater than zero for
* logic simplicity. For switching debug off the
* IFF_DEBUG is responsible (for !M_ASYNC mode).
*/
c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1;
if (d->ifp->if_flags & IFF_DEBUG)
c->debug = c->debug_shadow;
}
#else
c->debug = *(int*)data;
#endif
CX_UNLOCK (bd);
splx (s);
return 0;
}
switch (cmd) {
case TIOCSDTR: /* Set DTR */
CX_DEBUG2 (d, ("ioctl: tiocsdtr\n"));
s = splhigh ();
CX_LOCK (bd);
cx_set_dtr (c, 1);
CX_UNLOCK (bd);
splx (s);
return 0;
case TIOCCDTR: /* Clear DTR */
CX_DEBUG2 (d, ("ioctl: tioccdtr\n"));
s = splhigh ();
CX_LOCK (bd);
cx_set_dtr (c, 0);
CX_UNLOCK (bd);
splx (s);
return 0;
case TIOCMSET: /* Set DTR/RTS */
CX_DEBUG2 (d, ("ioctl: tiocmset\n"));
s = splhigh ();
CX_LOCK (bd);
cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0);
cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0);
CX_UNLOCK (bd);
splx (s);
return 0;
case TIOCMBIS: /* Add DTR/RTS */
CX_DEBUG2 (d, ("ioctl: tiocmbis\n"));
s = splhigh ();
CX_LOCK (bd);
if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1);
if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1);
CX_UNLOCK (bd);
splx (s);
return 0;
case TIOCMBIC: /* Clear DTR/RTS */
CX_DEBUG2 (d, ("ioctl: tiocmbic\n"));
s = splhigh ();
CX_LOCK (bd);
if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0);
if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0);
CX_UNLOCK (bd);
splx (s);
return 0;
case TIOCMGET: /* Get modem status */
CX_DEBUG2 (d, ("ioctl: tiocmget\n"));
*(int*)data = cx_modem_status (d);
return 0;
}
CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd));
return ENOTTY;
}
void cx_softintr (void *unused)
{
drv_t *d;
bdrv_t *bd;
async_q *q;
int i, s, ic, k;
while (MY_SOFT_INTR) {
MY_SOFT_INTR = 0;
for (i=0; i<NCX*NCHAN; ++i) {
d = channel [i];
if (!d || !d->chan || d->chan->type == T_NONE
|| d->chan->mode != M_ASYNC || !d->tty
|| !d->tty->t_dev)
continue;
bd = d->board->sys;
s = splhigh ();
CX_LOCK (bd);
if (d->intr_action & CX_READ) {
q = &(d->aqueue);
if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) {
k = AQ_GSZ(q);
if (d->tty->t_rawq.c_cc + k >
d->tty->t_ihiwat
&& (d->tty->t_cflag & CRTS_IFLOW
|| d->tty->t_iflag & IXOFF)
&& !(d->tty->t_state & TS_TBLOCK))
ttyblock(d->tty);
d->tty->t_rawcc += k;
while (k>0) {
k--;
AQ_POP (q, ic);
CX_UNLOCK (bd);
splx (s);
putc (ic, &d->tty->t_rawq);
s = splhigh ();
CX_LOCK (bd);
}
ttwakeup(d->tty);
if (d->tty->t_state & TS_TTSTOP
&& (d->tty->t_iflag & IXANY
|| d->tty->t_cc[VSTART] ==
d->tty->t_cc[VSTOP])) {
d->tty->t_state &= ~TS_TTSTOP;
d->tty->t_lflag &= ~FLUSHO;
d->intr_action |= CX_WRITE;
}
} else {
while (q->end != q->beg) {
AQ_POP (q, ic);
CX_UNLOCK (bd);
splx (s);
ttyld_rint (d->tty, ic);
s = splhigh ();
CX_LOCK (bd);
}
}
d->intr_action &= ~CX_READ;
}
splx (s);
CX_UNLOCK (bd);
s = splhigh ();
CX_LOCK (bd);
if (d->intr_action & CX_WRITE) {
if (d->tty->t_line)
ttyld_start (d->tty);
else
cx_oproc (d->tty);
d->intr_action &= ~CX_WRITE;
}
CX_UNLOCK (bd);
splx (s);
}
}
}
/*
* Fill transmitter buffer with data.
*/
static void cx_oproc (struct tty *tp)
{
int s, k;
drv_t *d;
bdrv_t *bd;
static u_char buf[DMABUFSZ];
u_char *p;
u_short len = 0, sublen = 0;
d = tp->t_sc;
bd = d->board->sys;
CX_DEBUG2 (d, ("cx_oproc\n"));
s = splhigh ();
CX_LOCK (bd);
if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts)
cx_set_rts (d->chan, 0);
else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts)
cx_set_rts (d->chan, 1);
if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) {
/* Start transmitter. */
cx_enable_transmit (d->chan, 1);
/* Is it busy? */
if (! cx_buf_free (d->chan)) {
tp->t_state |= TS_BUSY;
CX_UNLOCK (bd);
splx (s);
return;
}
if (tp->t_iflag & IXOFF) {
p = (buf + (DMABUFSZ/2));
sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
k = sublen;
while (k--) {
/* Send XON/XOFF out of band. */
if (*p == tp->t_cc[VSTOP]) {
cx_xflow_ctl (d->chan, 0);
p++;
continue;
}
if (*p == tp->t_cc[VSTART]) {
cx_xflow_ctl (d->chan, 1);
p++;
continue;
}
buf[len] = *p;
len++;
p++;
}
} else {
p = buf;
len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
}
if (len) {
cx_send_packet (d->chan, buf, len, 0);
tp->t_state |= TS_BUSY;
d->atimeout = 10;
CX_DEBUG2 (d, ("out %d bytes\n", len));
}
}
ttwwakeup (tp);
CX_UNLOCK (bd);
splx (s);
}
static int cx_param (struct tty *tp, struct termios *t)
{
drv_t *d;
bdrv_t *bd;
int s, bits, parity;
d = tp->t_sc;
bd = d->board->sys;
s = splhigh ();
CX_LOCK (bd);
if (t->c_ospeed == 0) {
/* Clear DTR and RTS. */
cx_set_dtr (d->chan, 0);
CX_UNLOCK (bd);
splx (s);
CX_DEBUG2 (d, ("cx_param (hangup)\n"));
return 0;
}
CX_DEBUG2 (d, ("cx_param\n"));
/* Check requested parameters. */
if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) {
CX_UNLOCK (bd);
splx (s);
return EINVAL;
}
if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) {
CX_UNLOCK (bd);
splx (s);
return EINVAL;
}
/* And copy them to tty and channel structures. */
tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed;
tp->t_cflag = t->c_cflag;
/* Set character length and parity mode. */
switch (t->c_cflag & CSIZE) {
default:
case CS8: bits = 8; break;
case CS7: bits = 7; break;
case CS6: bits = 6; break;
case CS5: bits = 5; break;
}
parity = ((t->c_cflag & PARENB) ? 1 : 0) *
(1 + ((t->c_cflag & PARODD) ? 0 : 1));
/* Set current channel number. */
if (! d->chan->dtr)
cx_set_dtr (d->chan, 1);
ttyldoptim (tp);
cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB),
!(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS),
(t->c_iflag & IXON), (t->c_iflag & IXANY),
t->c_cc[VSTART], t->c_cc[VSTOP]);
CX_UNLOCK (bd);
splx (s);
return 0;
}
/*
* Stop output on a line
*/
static void cx_stop (struct tty *tp, int flag)
{
drv_t *d;
bdrv_t *bd;
int s;
d = tp->t_sc;
bd = d->board->sys;
s = splhigh ();
CX_LOCK (bd);
if (tp->t_state & TS_BUSY) {
/* Stop transmitter */
CX_DEBUG2 (d, ("cx_stop\n"));
cx_transmitter_ctl (d->chan, 0);
}
CX_UNLOCK (bd);
splx (s);
}
/*
* Process the (delayed) carrier signal setup.
*/
static void cx_carrier (void *arg)
{
drv_t *d = arg;
bdrv_t *bd = d->board->sys;
cx_chan_t *c = d->chan;
int s, cd;
s = splhigh ();
CX_LOCK (bd);
cd = cx_get_cd (c);
if (d->cd != cd) {
if (cd) {
CX_DEBUG (d, ("carrier on\n"));
d->cd = 1;
CX_UNLOCK (bd);
splx (s);
if (d->tty)
ttyld_modem(d->tty, 1);
} else {
CX_DEBUG (d, ("carrier loss\n"));
d->cd = 0;
CX_UNLOCK (bd);
splx (s);
if (d->tty)
ttyld_modem(d->tty, 0);
}
} else {
CX_UNLOCK (bd);
splx (s);
}
}
/*
* Modem signal callback function.
*/
static void cx_modem (cx_chan_t *c)
{
drv_t *d = c->sys;
if (!d || c->mode != M_ASYNC)
return;
/* Handle carrier detect/loss. */
/* Carrier changed - delay processing DCD for a while
* to give both sides some time to initialize. */
callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d);
}
#ifdef NETGRAPH
static int ng_cx_constructor (node_p node)
{
drv_t *d = NG_NODE_PRIVATE (node);
CX_DEBUG (d, ("Constructor\n"));
return EINVAL;
}
static int ng_cx_newhook (node_p node, hook_p hook, const char *name)
{
int s;
drv_t *d = NG_NODE_PRIVATE (node);
bdrv_t *bd = d->board->sys;
if (d->chan->mode == M_ASYNC)
return EINVAL;
/* Attach debug hook */
if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) {
NG_HOOK_SET_PRIVATE (hook, NULL);
d->debug_hook = hook;
return 0;
}
/* Check for raw hook */
if (strcmp (name, NG_CX_HOOK_RAW) != 0)
return EINVAL;
NG_HOOK_SET_PRIVATE (hook, d);
d->hook = hook;
s = splhigh ();
CX_LOCK (bd);
cx_up (d);
CX_UNLOCK (bd);
splx (s);
return 0;
}
static int print_modems (char *s, cx_chan_t *c, int need_header)
{
int status = cx_modem_status (c->sys);
int length = 0;
if (need_header)
length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n");
length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n",
status & TIOCM_LE ? "On" : "-",
status & TIOCM_DTR ? "On" : "-",
status & TIOCM_DSR ? "On" : "-",
status & TIOCM_RTS ? "On" : "-",
status & TIOCM_CTS ? "On" : "-",
status & TIOCM_CD ? "On" : "-");
return length;
}
static int print_stats (char *s, cx_chan_t *c, int need_header)
{
int length = 0;
if (need_header)
length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n");
length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n",
c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts,
c->ierrs, c->obytes, c->opkts, c->oerrs);
return length;
}
static int print_chan (char *s, cx_chan_t *c)
{
drv_t *d = c->sys;
int length = 0;
length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num);
if (d->chan->debug)
length += sprintf (s + length, " debug=%d", d->chan->debug);
if (cx_get_baud (c))
length += sprintf (s + length, " %ld", cx_get_baud (c));
else
length += sprintf (s + length, " extclock");
if (c->mode == M_HDLC) {
length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off");
length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off");
}
length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n");
return length;
}
static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook)
{
drv_t *d = NG_NODE_PRIVATE (node);
struct ng_mesg *msg;
struct ng_mesg *resp = NULL;
int error = 0;
if (!d)
return EINVAL;
CX_DEBUG (d, ("Rcvmsg\n"));
NGI_GET_MSG (item, msg);
switch (msg->header.typecookie) {
default:
error = EINVAL;
break;
case NGM_CX_COOKIE:
printf ("Don't forget to implement\n");
error = EINVAL;
break;
case NGM_GENERIC_COOKIE:
switch (msg->header.cmd) {
default:
error = EINVAL;
break;
case NGM_TEXT_STATUS: {
char *s;
int l = 0;
int dl = sizeof (struct ng_mesg) + 730;
NG_MKRESPONSE (resp, msg, dl, M_NOWAIT);
if (! resp) {
error = ENOMEM;
break;
}
bzero (resp, dl);
s = (resp)->data;
l += print_chan (s + l, d->chan);
l += print_stats (s + l, d->chan, 1);
l += print_modems (s + l, d->chan, 1);
strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ);
}
break;
}
break;
}
NG_RESPOND_MSG (error, node, item, resp);
NG_FREE_MSG (msg);
return error;
}
static int ng_cx_rcvdata (hook_p hook, item_p item)
{
drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook));
struct mbuf *m;
struct ng_tag_prio *ptag;
bdrv_t *bd;
struct ifqueue *q;
int s;
NGI_GET_M (item, m);
NG_FREE_ITEM (item);
if (! NG_HOOK_PRIVATE (hook) || ! d) {
NG_FREE_M (m);
return ENETDOWN;
}
bd = d->board->sys;
/* Check for high priority data */
if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE,
NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) )
q = &d->hi_queue;
else
q = &d->lo_queue;
s = splhigh ();
CX_LOCK (bd);
IF_LOCK (q);
if (_IF_QFULL (q)) {
_IF_DROP (q);
IF_UNLOCK (q);
CX_UNLOCK (bd);
splx (s);
NG_FREE_M (m);
return ENOBUFS;
}
_IF_ENQUEUE (q, m);
IF_UNLOCK (q);
cx_start (d);
CX_UNLOCK (bd);
splx (s);
return 0;
}
static int ng_cx_rmnode (node_p node)
{
drv_t *d = NG_NODE_PRIVATE (node);
bdrv_t *bd;
CX_DEBUG (d, ("Rmnode\n"));
if (d && d->running) {
int s = splhigh ();
bd = d->board->sys;
CX_LOCK (bd);
cx_down (d);
CX_UNLOCK (bd);
splx (s);
}
#ifdef KLD_MODULE
if (node->nd_flags & NGF_REALLY_DIE) {
NG_NODE_SET_PRIVATE (node, NULL);
NG_NODE_UNREF (node);
}
NG_NODE_REVIVE(node); /* Persistant node */
#endif
return 0;
}
static int ng_cx_connect (hook_p hook)
{
drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
return 0;
}
static int ng_cx_disconnect (hook_p hook)
{
drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
bdrv_t *bd = d->board->sys;
int s;
s = splhigh ();
CX_LOCK (bd);
if (NG_HOOK_PRIVATE (hook))
cx_down (d);
CX_UNLOCK (bd);
splx (s);
/* If we were wait it than it reasserted now, just stop it. */
if (!callout_drain (&d->timeout_handle))
callout_stop (&d->timeout_handle);
return 0;
}
#endif /*NETGRAPH*/
static int cx_modevent (module_t mod, int type, void *unused)
{
static int load_count = 0;
switch (type) {
case MOD_LOAD:
#ifdef NETGRAPH
if (ng_newtype (&typestruct))
printf ("Failed to register ng_cx\n");
#endif
++load_count;
callout_init (&timeout_handle, CALLOUT_MPSAFE);
callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
/* Software interrupt. */
swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY,
INTR_MPSAFE, &cx_fast_ih);
break;
case MOD_UNLOAD:
if (load_count == 1) {
printf ("Removing device entry for Sigma\n");
#ifdef NETGRAPH
ng_rmtype (&typestruct);
#endif
}
/* If we were wait it than it reasserted now, just stop it. */
if (!callout_drain (&timeout_handle))
callout_stop (&timeout_handle);
swi_remove (cx_fast_ih);
--load_count;
break;
case MOD_SHUTDOWN:
break;
}
return 0;
}
#ifdef NETGRAPH
static struct ng_type typestruct = {
.version = NG_ABI_VERSION,
.name = NG_CX_NODE_TYPE,
.constructor = ng_cx_constructor,
.rcvmsg = ng_cx_rcvmsg,
.shutdown = ng_cx_rmnode,
.newhook = ng_cx_newhook,
.connect = ng_cx_connect,
.rcvdata = ng_cx_rcvdata,
.disconnect = ng_cx_disconnect,
};
#endif /*NETGRAPH*/
#ifdef NETGRAPH
MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
#else
MODULE_DEPEND (isa_cx, sppp, 1, 1, 1);
#endif
DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
MODULE_VERSION (cx, 1);
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