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freebsd-skq/sys/dev/cx/if_cx.c
rwatson b25019649c if_cx is currently disconnected from the build due to a dependence on 
the old TTY implementation; however, take a cut at stripping its
optional Giant-protected code paths enabled using debug.cx.mpsafenet,
which will no longer work once IFF_NEEDSGIANT is removed.
2009-02-19 00:06:01 +00:00

2576 lines
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/*-
* 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_NODELEN+1];
hook_p hook;
hook_p debug_hook;
node_p node;
struct ifqueue lo_queue;
struct ifqueue hi_queue;
short timeout;
struct callout timeout_handle;
#else
struct ifqueue queue;
struct ifnet *ifp;
#endif
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_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 void cx_ifwatchdog (struct ifnet *ifp);
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:
#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 = IFQ_MAXLEN;
d->hi_queue.ifq_maxlen = IFQ_MAXLEN;
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);
callout_init (&d->timeout_handle, CALLOUT_MPSAFE);
#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_watchdog = cx_ifwatchdog;
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;
}
#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);
}
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_ifwatchdog (struct ifnet *ifp)
{
drv_t *d = ifp->if_softc;
cx_watchdog (d);
}
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;
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. */
#ifdef NETGRAPH
d->timeout = 10;
#else
d->ifp->if_timer = 10;
#endif
}
#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);
}
splx (s);
}
/*
* Handle transmit timeouts.
* Recover after lost transmit interrupts.
* Always called on splimp().
*/
static void cx_watchdog (drv_t *d)
{
bdrv_t *bd = d->board->sys;
int s = splhigh ();
CX_LOCK (bd);
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);
}
CX_UNLOCK (bd);
splx (s);
}
/*
* 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;
}
#ifdef NETGRAPH
d->timeout = 0;
#else
++d->ifp->if_opackets;
d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
d->ifp->if_timer = 0;
#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) {
#ifdef NETGRAPH
d->timeout = 0;
#else
++d->ifp->if_oerrors;
d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
d->ifp->if_timer = 0;
cx_start (d);
#endif
}
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_CMDSTRLEN);
}
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 void ng_cx_watchdog (void *arg)
{
drv_t *d = arg;
if (d->timeout == 1)
cx_watchdog (d);
if (d->timeout)
d->timeout--;
callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d);
}
static int ng_cx_connect (hook_p hook)
{
drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, 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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