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kernel-fxtec-pro1x/drivers/isdn/capi/kcapi.c
Julia Lawall 4d5392cc4d drivers/isdn/capi/kcapi.c: Adjust error handling code involving capi_ctr_put 
After calling capi_ctr_get, error handling code should call capi_ctr_put.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r@
expression x,E;
statement S;
position p1,p2,p3;
@@

(
if ((x = capi_ctr_get@p1(...)) == NULL || ...) S
|
x = capi_ctr_get@p1(...)
... when != x
if (x == NULL || ...) S
)
<...
if@p3 (...) { ... when != capi_ctr_put(x)
                  when != if (x) { ... capi_ctr_put(x); ...}
    return@p2 ...;
}
...>
(
return x;
|
return 0;
|
x = E
|
E = x
|
capi_ctr_put(x)
)

@exists@
position r.p1,r.p2,r.p3;
expression x;
int ret != 0;
statement S;
@@

* x = capi_ctr_get@p1(...)
  <...
* if@p3 (...)
  S
  ...>
* return@p2 \(NULL\|ret\);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-22 19:04:54 -07:00

1033 lines
24 KiB
C
Raw Blame History

/* $Id: kcapi.c,v 1.1.2.8 2004/03/26 19:57:20 armin Exp $
*
* Kernel CAPI 2.0 Module
*
* Copyright 1999 by Carsten Paeth <calle@calle.de>
* Copyright 2002 by Kai Germaschewski <kai@germaschewski.name>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#define AVMB1_COMPAT
#include "kcapi.h"
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/capi.h>
#include <linux/kernelcapi.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <linux/isdn/capicmd.h>
#include <linux/isdn/capiutil.h>
#ifdef AVMB1_COMPAT
#include <linux/b1lli.h>
#endif
#include <linux/mutex.h>
static char *revision = "$Revision: 1.1.2.8 $";
/* ------------------------------------------------------------- */
static int showcapimsgs = 0;
MODULE_DESCRIPTION("CAPI4Linux: kernel CAPI layer");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
module_param(showcapimsgs, uint, 0);
/* ------------------------------------------------------------- */
struct capi_notifier {
struct work_struct work;
unsigned int cmd;
u32 controller;
u16 applid;
u32 ncci;
};
/* ------------------------------------------------------------- */
static struct capi_version driver_version = {2, 0, 1, 1<<4};
static char driver_serial[CAPI_SERIAL_LEN] = "0004711";
static char capi_manufakturer[64] = "AVM Berlin";
#define NCCI2CTRL(ncci) (((ncci) >> 24) & 0x7f)
LIST_HEAD(capi_drivers);
DEFINE_RWLOCK(capi_drivers_list_lock);
static DEFINE_RWLOCK(application_lock);
static DEFINE_MUTEX(controller_mutex);
struct capi20_appl *capi_applications[CAPI_MAXAPPL];
struct capi_ctr *capi_cards[CAPI_MAXCONTR];
static int ncards;
/* -------- controller ref counting -------------------------------------- */
static inline struct capi_ctr *
capi_ctr_get(struct capi_ctr *card)
{
if (!try_module_get(card->owner))
return NULL;
return card;
}
static inline void
capi_ctr_put(struct capi_ctr *card)
{
module_put(card->owner);
}
/* ------------------------------------------------------------- */
static inline struct capi_ctr *get_capi_ctr_by_nr(u16 contr)
{
if (contr - 1 >= CAPI_MAXCONTR)
return NULL;
return capi_cards[contr - 1];
}
static inline struct capi20_appl *get_capi_appl_by_nr(u16 applid)
{
if (applid - 1 >= CAPI_MAXAPPL)
return NULL;
return capi_applications[applid - 1];
}
/* -------- util functions ------------------------------------ */
static inline int capi_cmd_valid(u8 cmd)
{
switch (cmd) {
case CAPI_ALERT:
case CAPI_CONNECT:
case CAPI_CONNECT_ACTIVE:
case CAPI_CONNECT_B3_ACTIVE:
case CAPI_CONNECT_B3:
case CAPI_CONNECT_B3_T90_ACTIVE:
case CAPI_DATA_B3:
case CAPI_DISCONNECT_B3:
case CAPI_DISCONNECT:
case CAPI_FACILITY:
case CAPI_INFO:
case CAPI_LISTEN:
case CAPI_MANUFACTURER:
case CAPI_RESET_B3:
case CAPI_SELECT_B_PROTOCOL:
return 1;
}
return 0;
}
static inline int capi_subcmd_valid(u8 subcmd)
{
switch (subcmd) {
case CAPI_REQ:
case CAPI_CONF:
case CAPI_IND:
case CAPI_RESP:
return 1;
}
return 0;
}
/* ------------------------------------------------------------ */
static void register_appl(struct capi_ctr *card, u16 applid, capi_register_params *rparam)
{
card = capi_ctr_get(card);
if (card)
card->register_appl(card, applid, rparam);
else
printk(KERN_WARNING "%s: cannot get card resources\n", __func__);
}
static void release_appl(struct capi_ctr *card, u16 applid)
{
DBG("applid %#x", applid);
card->release_appl(card, applid);
capi_ctr_put(card);
}
/* -------- KCI_CONTRUP --------------------------------------- */
static void notify_up(u32 contr)
{
struct capi_ctr *card = get_capi_ctr_by_nr(contr);
struct capi20_appl *ap;
u16 applid;
if (showcapimsgs & 1) {
printk(KERN_DEBUG "kcapi: notify up contr %d\n", contr);
}
if (!card) {
printk(KERN_WARNING "%s: invalid contr %d\n", __func__, contr);
return;
}
for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
ap = get_capi_appl_by_nr(applid);
if (!ap || ap->release_in_progress) continue;
register_appl(card, applid, &ap->rparam);
if (ap->callback && !ap->release_in_progress)
ap->callback(KCI_CONTRUP, contr, &card->profile);
}
}
/* -------- KCI_CONTRDOWN ------------------------------------- */
static void notify_down(u32 contr)
{
struct capi20_appl *ap;
u16 applid;
if (showcapimsgs & 1) {
printk(KERN_DEBUG "kcapi: notify down contr %d\n", contr);
}
for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
ap = get_capi_appl_by_nr(applid);
if (ap && ap->callback && !ap->release_in_progress)
ap->callback(KCI_CONTRDOWN, contr, NULL);
}
}
static void notify_handler(struct work_struct *work)
{
struct capi_notifier *np =
container_of(work, struct capi_notifier, work);
switch (np->cmd) {
case KCI_CONTRUP:
notify_up(np->controller);
break;
case KCI_CONTRDOWN:
notify_down(np->controller);
break;
}
kfree(np);
}
/*
* The notifier will result in adding/deleteing of devices. Devices can
* only removed in user process, not in bh.
*/
static int notify_push(unsigned int cmd, u32 controller, u16 applid, u32 ncci)
{
struct capi_notifier *np = kmalloc(sizeof(*np), GFP_ATOMIC);
if (!np)
return -ENOMEM;
INIT_WORK(&np->work, notify_handler);
np->cmd = cmd;
np->controller = controller;
np->applid = applid;
np->ncci = ncci;
schedule_work(&np->work);
return 0;
}
/* -------- Receiver ------------------------------------------ */
static void recv_handler(struct work_struct *work)
{
struct sk_buff *skb;
struct capi20_appl *ap =
container_of(work, struct capi20_appl, recv_work);
if ((!ap) || (ap->release_in_progress))
return;
mutex_lock(&ap->recv_mtx);
while ((skb = skb_dequeue(&ap->recv_queue))) {
if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND)
ap->nrecvdatapkt++;
else
ap->nrecvctlpkt++;
ap->recv_message(ap, skb);
}
mutex_unlock(&ap->recv_mtx);
}
void capi_ctr_handle_message(struct capi_ctr * card, u16 appl, struct sk_buff *skb)
{
struct capi20_appl *ap;
int showctl = 0;
u8 cmd, subcmd;
unsigned long flags;
_cdebbuf *cdb;
if (card->cardstate != CARD_RUNNING) {
cdb = capi_message2str(skb->data);
if (cdb) {
printk(KERN_INFO "kcapi: controller [%03d] not active, got: %s",
card->cnr, cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_INFO "kcapi: controller [%03d] not active, cannot trace\n",
card->cnr);
goto error;
}
cmd = CAPIMSG_COMMAND(skb->data);
subcmd = CAPIMSG_SUBCOMMAND(skb->data);
if (cmd == CAPI_DATA_B3 && subcmd == CAPI_IND) {
card->nrecvdatapkt++;
if (card->traceflag > 2) showctl |= 2;
} else {
card->nrecvctlpkt++;
if (card->traceflag) showctl |= 2;
}
showctl |= (card->traceflag & 1);
if (showctl & 2) {
if (showctl & 1) {
printk(KERN_DEBUG "kcapi: got [%03d] id#%d %s len=%u\n",
card->cnr, CAPIMSG_APPID(skb->data),
capi_cmd2str(cmd, subcmd),
CAPIMSG_LEN(skb->data));
} else {
cdb = capi_message2str(skb->data);
if (cdb) {
printk(KERN_DEBUG "kcapi: got [%03d] %s\n",
card->cnr, cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_DEBUG "kcapi: got [%03d] id#%d %s len=%u, cannot trace\n",
card->cnr, CAPIMSG_APPID(skb->data),
capi_cmd2str(cmd, subcmd),
CAPIMSG_LEN(skb->data));
}
}
read_lock_irqsave(&application_lock, flags);
ap = get_capi_appl_by_nr(CAPIMSG_APPID(skb->data));
if ((!ap) || (ap->release_in_progress)) {
read_unlock_irqrestore(&application_lock, flags);
cdb = capi_message2str(skb->data);
if (cdb) {
printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s)\n",
CAPIMSG_APPID(skb->data), cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s) cannot trace\n",
CAPIMSG_APPID(skb->data),
capi_cmd2str(cmd, subcmd));
goto error;
}
skb_queue_tail(&ap->recv_queue, skb);
schedule_work(&ap->recv_work);
read_unlock_irqrestore(&application_lock, flags);
return;
error:
kfree_skb(skb);
}
EXPORT_SYMBOL(capi_ctr_handle_message);
void capi_ctr_ready(struct capi_ctr * card)
{
card->cardstate = CARD_RUNNING;
printk(KERN_NOTICE "kcapi: card [%03d] \"%s\" ready.\n",
card->cnr, card->name);
notify_push(KCI_CONTRUP, card->cnr, 0, 0);
}
EXPORT_SYMBOL(capi_ctr_ready);
void capi_ctr_reseted(struct capi_ctr * card)
{
u16 appl;
DBG("");
if (card->cardstate == CARD_DETECTED)
return;
card->cardstate = CARD_DETECTED;
memset(card->manu, 0, sizeof(card->manu));
memset(&card->version, 0, sizeof(card->version));
memset(&card->profile, 0, sizeof(card->profile));
memset(card->serial, 0, sizeof(card->serial));
for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
struct capi20_appl *ap = get_capi_appl_by_nr(appl);
if (!ap || ap->release_in_progress)
continue;
capi_ctr_put(card);
}
printk(KERN_NOTICE "kcapi: card [%03d] down.\n", card->cnr);
notify_push(KCI_CONTRDOWN, card->cnr, 0, 0);
}
EXPORT_SYMBOL(capi_ctr_reseted);
void capi_ctr_suspend_output(struct capi_ctr *card)
{
if (!card->blocked) {
printk(KERN_DEBUG "kcapi: card [%03d] suspend\n", card->cnr);
card->blocked = 1;
}
}
EXPORT_SYMBOL(capi_ctr_suspend_output);
void capi_ctr_resume_output(struct capi_ctr *card)
{
if (card->blocked) {
printk(KERN_DEBUG "kcapi: card [%03d] resume\n", card->cnr);
card->blocked = 0;
}
}
EXPORT_SYMBOL(capi_ctr_resume_output);
/* ------------------------------------------------------------- */
int
attach_capi_ctr(struct capi_ctr *card)
{
int i;
mutex_lock(&controller_mutex);
for (i = 0; i < CAPI_MAXCONTR; i++) {
if (capi_cards[i] == NULL)
break;
}
if (i == CAPI_MAXCONTR) {
mutex_unlock(&controller_mutex);
printk(KERN_ERR "kcapi: out of controller slots\n");
return -EBUSY;
}
capi_cards[i] = card;
mutex_unlock(&controller_mutex);
card->nrecvctlpkt = 0;
card->nrecvdatapkt = 0;
card->nsentctlpkt = 0;
card->nsentdatapkt = 0;
card->cnr = i + 1;
card->cardstate = CARD_DETECTED;
card->blocked = 0;
card->traceflag = showcapimsgs;
sprintf(card->procfn, "capi/controllers/%d", card->cnr);
card->procent = create_proc_entry(card->procfn, 0, NULL);
if (card->procent) {
card->procent->read_proc =
(int (*)(char *,char **,off_t,int,int *,void *))
card->ctr_read_proc;
card->procent->data = card;
}
ncards++;
printk(KERN_NOTICE "kcapi: Controller [%03d]: %s attached\n",
card->cnr, card->name);
return 0;
}
EXPORT_SYMBOL(attach_capi_ctr);
int detach_capi_ctr(struct capi_ctr *card)
{
if (card->cardstate != CARD_DETECTED)
capi_ctr_reseted(card);
ncards--;
if (card->procent) {
remove_proc_entry(card->procfn, NULL);
card->procent = NULL;
}
capi_cards[card->cnr - 1] = NULL;
printk(KERN_NOTICE "kcapi: Controller [%03d]: %s unregistered\n",
card->cnr, card->name);
return 0;
}
EXPORT_SYMBOL(detach_capi_ctr);
void register_capi_driver(struct capi_driver *driver)
{
unsigned long flags;
write_lock_irqsave(&capi_drivers_list_lock, flags);
list_add_tail(&driver->list, &capi_drivers);
write_unlock_irqrestore(&capi_drivers_list_lock, flags);
}
EXPORT_SYMBOL(register_capi_driver);
void unregister_capi_driver(struct capi_driver *driver)
{
unsigned long flags;
write_lock_irqsave(&capi_drivers_list_lock, flags);
list_del(&driver->list);
write_unlock_irqrestore(&capi_drivers_list_lock, flags);
}
EXPORT_SYMBOL(unregister_capi_driver);
/* ------------------------------------------------------------- */
/* -------- CAPI2.0 Interface ---------------------------------- */
/* ------------------------------------------------------------- */
u16 capi20_isinstalled(void)
{
int i;
for (i = 0; i < CAPI_MAXCONTR; i++) {
if (capi_cards[i] && capi_cards[i]->cardstate == CARD_RUNNING)
return CAPI_NOERROR;
}
return CAPI_REGNOTINSTALLED;
}
EXPORT_SYMBOL(capi20_isinstalled);
u16 capi20_register(struct capi20_appl *ap)
{
int i;
u16 applid;
unsigned long flags;
DBG("");
if (ap->rparam.datablklen < 128)
return CAPI_LOGBLKSIZETOSMALL;
write_lock_irqsave(&application_lock, flags);
for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
if (capi_applications[applid - 1] == NULL)
break;
}
if (applid > CAPI_MAXAPPL) {
write_unlock_irqrestore(&application_lock, flags);
return CAPI_TOOMANYAPPLS;
}
ap->applid = applid;
capi_applications[applid - 1] = ap;
ap->nrecvctlpkt = 0;
ap->nrecvdatapkt = 0;
ap->nsentctlpkt = 0;
ap->nsentdatapkt = 0;
ap->callback = NULL;
mutex_init(&ap->recv_mtx);
skb_queue_head_init(&ap->recv_queue);
INIT_WORK(&ap->recv_work, recv_handler);
ap->release_in_progress = 0;
write_unlock_irqrestore(&application_lock, flags);
mutex_lock(&controller_mutex);
for (i = 0; i < CAPI_MAXCONTR; i++) {
if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING)
continue;
register_appl(capi_cards[i], applid, &ap->rparam);
}
mutex_unlock(&controller_mutex);
if (showcapimsgs & 1) {
printk(KERN_DEBUG "kcapi: appl %d up\n", applid);
}
return CAPI_NOERROR;
}
EXPORT_SYMBOL(capi20_register);
u16 capi20_release(struct capi20_appl *ap)
{
int i;
unsigned long flags;
DBG("applid %#x", ap->applid);
write_lock_irqsave(&application_lock, flags);
ap->release_in_progress = 1;
capi_applications[ap->applid - 1] = NULL;
write_unlock_irqrestore(&application_lock, flags);
mutex_lock(&controller_mutex);
for (i = 0; i < CAPI_MAXCONTR; i++) {
if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING)
continue;
release_appl(capi_cards[i], ap->applid);
}
mutex_unlock(&controller_mutex);
flush_scheduled_work();
skb_queue_purge(&ap->recv_queue);
if (showcapimsgs & 1) {
printk(KERN_DEBUG "kcapi: appl %d down\n", ap->applid);
}
return CAPI_NOERROR;
}
EXPORT_SYMBOL(capi20_release);
u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb)
{
struct capi_ctr *card;
int showctl = 0;
u8 cmd, subcmd;
DBG("applid %#x", ap->applid);
if (ncards == 0)
return CAPI_REGNOTINSTALLED;
if ((ap->applid == 0) || ap->release_in_progress)
return CAPI_ILLAPPNR;
if (skb->len < 12
|| !capi_cmd_valid(CAPIMSG_COMMAND(skb->data))
|| !capi_subcmd_valid(CAPIMSG_SUBCOMMAND(skb->data)))
return CAPI_ILLCMDORSUBCMDORMSGTOSMALL;
card = get_capi_ctr_by_nr(CAPIMSG_CONTROLLER(skb->data));
if (!card || card->cardstate != CARD_RUNNING) {
card = get_capi_ctr_by_nr(1); // XXX why?
if (!card || card->cardstate != CARD_RUNNING)
return CAPI_REGNOTINSTALLED;
}
if (card->blocked)
return CAPI_SENDQUEUEFULL;
cmd = CAPIMSG_COMMAND(skb->data);
subcmd = CAPIMSG_SUBCOMMAND(skb->data);
if (cmd == CAPI_DATA_B3 && subcmd== CAPI_REQ) {
card->nsentdatapkt++;
ap->nsentdatapkt++;
if (card->traceflag > 2) showctl |= 2;
} else {
card->nsentctlpkt++;
ap->nsentctlpkt++;
if (card->traceflag) showctl |= 2;
}
showctl |= (card->traceflag & 1);
if (showctl & 2) {
if (showctl & 1) {
printk(KERN_DEBUG "kcapi: put [%03d] id#%d %s len=%u\n",
CAPIMSG_CONTROLLER(skb->data),
CAPIMSG_APPID(skb->data),
capi_cmd2str(cmd, subcmd),
CAPIMSG_LEN(skb->data));
} else {
_cdebbuf *cdb = capi_message2str(skb->data);
if (cdb) {
printk(KERN_DEBUG "kcapi: put [%03d] %s\n",
CAPIMSG_CONTROLLER(skb->data),
cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_DEBUG "kcapi: put [%03d] id#%d %s len=%u cannot trace\n",
CAPIMSG_CONTROLLER(skb->data),
CAPIMSG_APPID(skb->data),
capi_cmd2str(cmd, subcmd),
CAPIMSG_LEN(skb->data));
}
}
return card->send_message(card, skb);
}
EXPORT_SYMBOL(capi20_put_message);
u16 capi20_get_manufacturer(u32 contr, u8 *buf)
{
struct capi_ctr *card;
if (contr == 0) {
strlcpy(buf, capi_manufakturer, CAPI_MANUFACTURER_LEN);
return CAPI_NOERROR;
}
card = get_capi_ctr_by_nr(contr);
if (!card || card->cardstate != CARD_RUNNING)
return CAPI_REGNOTINSTALLED;
strlcpy(buf, card->manu, CAPI_MANUFACTURER_LEN);
return CAPI_NOERROR;
}
EXPORT_SYMBOL(capi20_get_manufacturer);
u16 capi20_get_version(u32 contr, struct capi_version *verp)
{
struct capi_ctr *card;
if (contr == 0) {
*verp = driver_version;
return CAPI_NOERROR;
}
card = get_capi_ctr_by_nr(contr);
if (!card || card->cardstate != CARD_RUNNING)
return CAPI_REGNOTINSTALLED;
memcpy((void *) verp, &card->version, sizeof(capi_version));
return CAPI_NOERROR;
}
EXPORT_SYMBOL(capi20_get_version);
u16 capi20_get_serial(u32 contr, u8 *serial)
{
struct capi_ctr *card;
if (contr == 0) {
strlcpy(serial, driver_serial, CAPI_SERIAL_LEN);
return CAPI_NOERROR;
}
card = get_capi_ctr_by_nr(contr);
if (!card || card->cardstate != CARD_RUNNING)
return CAPI_REGNOTINSTALLED;
strlcpy((void *) serial, card->serial, CAPI_SERIAL_LEN);
return CAPI_NOERROR;
}
EXPORT_SYMBOL(capi20_get_serial);
u16 capi20_get_profile(u32 contr, struct capi_profile *profp)
{
struct capi_ctr *card;
if (contr == 0) {
profp->ncontroller = ncards;
return CAPI_NOERROR;
}
card = get_capi_ctr_by_nr(contr);
if (!card || card->cardstate != CARD_RUNNING)
return CAPI_REGNOTINSTALLED;
memcpy((void *) profp, &card->profile,
sizeof(struct capi_profile));
return CAPI_NOERROR;
}
EXPORT_SYMBOL(capi20_get_profile);
#ifdef AVMB1_COMPAT
static int old_capi_manufacturer(unsigned int cmd, void __user *data)
{
avmb1_loadandconfigdef ldef;
avmb1_extcarddef cdef;
avmb1_resetdef rdef;
capicardparams cparams;
struct capi_ctr *card;
struct capi_driver *driver = NULL;
capiloaddata ldata;
struct list_head *l;
unsigned long flags;
int retval;
switch (cmd) {
case AVMB1_ADDCARD:
case AVMB1_ADDCARD_WITH_TYPE:
if (cmd == AVMB1_ADDCARD) {
if ((retval = copy_from_user(&cdef, data,
sizeof(avmb1_carddef))))
return retval;
cdef.cardtype = AVM_CARDTYPE_B1;
} else {
if ((retval = copy_from_user(&cdef, data,
sizeof(avmb1_extcarddef))))
return retval;
}
cparams.port = cdef.port;
cparams.irq = cdef.irq;
cparams.cardnr = cdef.cardnr;
read_lock_irqsave(&capi_drivers_list_lock, flags);
switch (cdef.cardtype) {
case AVM_CARDTYPE_B1:
list_for_each(l, &capi_drivers) {
driver = list_entry(l, struct capi_driver, list);
if (strcmp(driver->name, "b1isa") == 0)
break;
}
break;
case AVM_CARDTYPE_T1:
list_for_each(l, &capi_drivers) {
driver = list_entry(l, struct capi_driver, list);
if (strcmp(driver->name, "t1isa") == 0)
break;
}
break;
default:
driver = NULL;
break;
}
if (!driver) {
read_unlock_irqrestore(&capi_drivers_list_lock, flags);
printk(KERN_ERR "kcapi: driver not loaded.\n");
return -EIO;
}
if (!driver->add_card) {
read_unlock_irqrestore(&capi_drivers_list_lock, flags);
printk(KERN_ERR "kcapi: driver has no add card function.\n");
return -EIO;
}
retval = driver->add_card(driver, &cparams);
read_unlock_irqrestore(&capi_drivers_list_lock, flags);
return retval;
case AVMB1_LOAD:
case AVMB1_LOAD_AND_CONFIG:
if (cmd == AVMB1_LOAD) {
if (copy_from_user(&ldef, data,
sizeof(avmb1_loaddef)))
return -EFAULT;
ldef.t4config.len = 0;
ldef.t4config.data = NULL;
} else {
if (copy_from_user(&ldef, data,
sizeof(avmb1_loadandconfigdef)))
return -EFAULT;
}
card = get_capi_ctr_by_nr(ldef.contr);
if (!card)
return -EINVAL;
card = capi_ctr_get(card);
if (!card)
return -ESRCH;
if (card->load_firmware == NULL) {
printk(KERN_DEBUG "kcapi: load: no load function\n");
capi_ctr_put(card);
return -ESRCH;
}
if (ldef.t4file.len <= 0) {
printk(KERN_DEBUG "kcapi: load: invalid parameter: length of t4file is %d ?\n", ldef.t4file.len);
capi_ctr_put(card);
return -EINVAL;
}
if (ldef.t4file.data == NULL) {
printk(KERN_DEBUG "kcapi: load: invalid parameter: dataptr is 0\n");
capi_ctr_put(card);
return -EINVAL;
}
ldata.firmware.user = 1;
ldata.firmware.data = ldef.t4file.data;
ldata.firmware.len = ldef.t4file.len;
ldata.configuration.user = 1;
ldata.configuration.data = ldef.t4config.data;
ldata.configuration.len = ldef.t4config.len;
if (card->cardstate != CARD_DETECTED) {
printk(KERN_INFO "kcapi: load: contr=%d not in detect state\n", ldef.contr);
capi_ctr_put(card);
return -EBUSY;
}
card->cardstate = CARD_LOADING;
retval = card->load_firmware(card, &ldata);
if (retval) {
card->cardstate = CARD_DETECTED;
capi_ctr_put(card);
return retval;
}
while (card->cardstate != CARD_RUNNING) {
msleep_interruptible(100); /* 0.1 sec */
if (signal_pending(current)) {
capi_ctr_put(card);
return -EINTR;
}
}
capi_ctr_put(card);
return 0;
case AVMB1_RESETCARD:
if (copy_from_user(&rdef, data, sizeof(avmb1_resetdef)))
return -EFAULT;
card = get_capi_ctr_by_nr(rdef.contr);
if (!card)
return -ESRCH;
if (card->cardstate == CARD_DETECTED)
return 0;
card->reset_ctr(card);
while (card->cardstate > CARD_DETECTED) {
msleep_interruptible(100); /* 0.1 sec */
if (signal_pending(current))
return -EINTR;
}
return 0;
}
return -EINVAL;
}
#endif
int capi20_manufacturer(unsigned int cmd, void __user *data)
{
struct capi_ctr *card;
switch (cmd) {
#ifdef AVMB1_COMPAT
case AVMB1_LOAD:
case AVMB1_LOAD_AND_CONFIG:
case AVMB1_RESETCARD:
case AVMB1_GET_CARDINFO:
case AVMB1_REMOVECARD:
return old_capi_manufacturer(cmd, data);
#endif
case KCAPI_CMD_TRACE:
{
kcapi_flagdef fdef;
if (copy_from_user(&fdef, data, sizeof(kcapi_flagdef)))
return -EFAULT;
card = get_capi_ctr_by_nr(fdef.contr);
if (!card)
return -ESRCH;
card->traceflag = fdef.flag;
printk(KERN_INFO "kcapi: contr [%03d] set trace=%d\n",
card->cnr, card->traceflag);
return 0;
}
case KCAPI_CMD_ADDCARD:
{
struct list_head *l;
struct capi_driver *driver = NULL;
capicardparams cparams;
kcapi_carddef cdef;
int retval;
if ((retval = copy_from_user(&cdef, data, sizeof(cdef))))
return retval;
cparams.port = cdef.port;
cparams.irq = cdef.irq;
cparams.membase = cdef.membase;
cparams.cardnr = cdef.cardnr;
cparams.cardtype = 0;
cdef.driver[sizeof(cdef.driver)-1] = 0;
list_for_each(l, &capi_drivers) {
driver = list_entry(l, struct capi_driver, list);
if (strcmp(driver->name, cdef.driver) == 0)
break;
}
if (driver == NULL) {
printk(KERN_ERR "kcapi: driver \"%s\" not loaded.\n",
cdef.driver);
return -ESRCH;
}
if (!driver->add_card) {
printk(KERN_ERR "kcapi: driver \"%s\" has no add card function.\n", cdef.driver);
return -EIO;
}
return driver->add_card(driver, &cparams);
}
default:
printk(KERN_ERR "kcapi: manufacturer command %d unknown.\n",
cmd);
break;
}
return -EINVAL;
}
EXPORT_SYMBOL(capi20_manufacturer);
/* temporary hack */
void capi20_set_callback(struct capi20_appl *ap,
void (*callback) (unsigned int cmd, __u32 contr, void *data))
{
ap->callback = callback;
}
EXPORT_SYMBOL(capi20_set_callback);
/* ------------------------------------------------------------- */
/* -------- Init & Cleanup ------------------------------------- */
/* ------------------------------------------------------------- */
/*
* init / exit functions
*/
static int __init kcapi_init(void)
{
char *p;
char rev[32];
int ret;
ret = cdebug_init();
if (ret)
return ret;
kcapi_proc_init();
if ((p = strchr(revision, ':')) != NULL && p[1]) {
strlcpy(rev, p + 2, sizeof(rev));
if ((p = strchr(rev, '$')) != NULL && p > rev)
*(p-1) = 0;
} else
strcpy(rev, "1.0");
printk(KERN_NOTICE "CAPI Subsystem Rev %s\n", rev);
return 0;
}
static void __exit kcapi_exit(void)
{
kcapi_proc_exit();
/* make sure all notifiers are finished */
flush_scheduled_work();
cdebug_exit();
}
module_init(kcapi_init);
module_exit(kcapi_exit);
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