static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct cardstate *cs = dev_get_drvdata(dev);
long int value;
char *end;
value = simple_strtol(buf, &end, 0);
while (*end)
if (!isspace(*end++))
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
if (mutex_lock_interruptible(&cs->mutex))
return -ERESTARTSYS;
cs->waiting = 1;
if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE,
NULL, value, NULL)) {
cs->waiting = 0;
mutex_unlock(&cs->mutex);
return -ENOMEM;
}
gig_dbg(DEBUG_CMD, "scheduling PROC_CIDMODE");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
mutex_unlock(&cs->mutex);
return count;
}
static int if_version(struct cardstate *cs, unsigned arg[4])
{
static const unsigned version[4] = GIG_VERSION;
static const unsigned compat[4] = GIG_COMPAT;
unsigned cmd = arg[0];
gig_dbg(DEBUG_IF, "%u: if_version (%d)", cs->minor_index, cmd);
switch (cmd) {
case GIGVER_DRIVER:
memcpy(arg, version, sizeof version);
return 0;
case GIGVER_COMPAT:
memcpy(arg, compat, sizeof compat);
return 0;
case GIGVER_FWBASE:
cs->waiting = 1;
if (!gigaset_add_event(cs, &cs->at_state, EV_IF_VER,
NULL, 0, arg)) {
cs->waiting = 0;
return -ENOMEM;
}
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
if (cs->cmd_result >= 0)
return 0;
return cs->cmd_result;
default:
return -EINVAL;
}
}
/**
* gigaset_read_int_callback
*
* It is called if the data was received from the device.
*/
static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs)
{
struct inbuf_t *inbuf = urb->context;
struct cardstate *cs = inbuf->cs;
int resubmit = 0;
int r;
unsigned numbytes;
unsigned char *src;
unsigned long flags;
if (!urb->status) {
if (!cs->connected) {
err("%s: disconnected", __func__); /* should never happen */
return;
}
numbytes = urb->actual_length;
if (numbytes) {
src = inbuf->rcvbuf;
if (unlikely(*src))
dev_warn(cs->dev,
"%s: There was no leading 0, but 0x%02x!\n",
__func__, (unsigned) *src);
++src; /* skip leading 0x00 */
--numbytes;
if (gigaset_fill_inbuf(inbuf, src, numbytes)) {
gig_dbg(DEBUG_INTR, "%s-->BH", __func__);
gigaset_schedule_event(inbuf->cs);
}
} else
gig_dbg(DEBUG_INTR, "Received zero block length");
resubmit = 1;
} else {
/* The urb might have been killed. */
gig_dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d",
__func__, urb->status);
if (urb->status != -ENOENT) { /* not killed */
if (!cs->connected) {
err("%s: disconnected", __func__); /* should never happen */
return;
}
resubmit = 1;
}
}
if (resubmit) {
spin_lock_irqsave(&cs->lock, flags);
r = cs->connected ? usb_submit_urb(urb, SLAB_ATOMIC) : -ENODEV;
spin_unlock_irqrestore(&cs->lock, flags);
if (r)
dev_err(cs->dev, "error %d when resubmitting urb.\n",
-r);
}
}
/*
* Interrupt Input URB completion routine
*/
static void gigaset_read_int_callback(struct urb *urb)
{
struct cardstate *cs = urb->context;
struct inbuf_t *inbuf = cs->inbuf;
int status = urb->status;
int r;
unsigned numbytes;
unsigned char *src;
unsigned long flags;
if (!status) {
numbytes = urb->actual_length;
if (numbytes) {
src = cs->hw.usb->rcvbuf;
if (unlikely(*src))
dev_warn(cs->dev,
"%s: There was no leading 0, but 0x%02x!\n",
__func__, (unsigned) *src);
++src; /* skip leading 0x00 */
--numbytes;
if (gigaset_fill_inbuf(inbuf, src, numbytes)) {
gig_dbg(DEBUG_INTR, "%s-->BH", __func__);
gigaset_schedule_event(inbuf->cs);
}
} else
gig_dbg(DEBUG_INTR, "Received zero block length");
} else {
/* The urb might have been killed. */
gig_dbg(DEBUG_ANY, "%s - nonzero status received: %d",
__func__, status);
if (status == -ENOENT || status == -ESHUTDOWN)
/* killed or endpoint shutdown: don't resubmit */
return;
}
/* resubmit URB */
spin_lock_irqsave(&cs->lock, flags);
if (!cs->connected) {
spin_unlock_irqrestore(&cs->lock, flags);
pr_err("%s: disconnected\n", __func__);
return;
}
r = usb_submit_urb(urb, GFP_ATOMIC);
spin_unlock_irqrestore(&cs->lock, flags);
if (r)
dev_err(cs->dev, "error %d resubmitting URB\n", -r);
}
static int if_lock(struct cardstate *cs, int *arg)
{
int cmd = *arg;
gig_dbg(DEBUG_IF, "%u: if_lock (%d)", cs->minor_index, cmd);
if (cmd > 1)
return -EINVAL;
if (cmd < 0) {
*arg = cs->mstate == MS_LOCKED;
return 0;
}
if (!cmd && cs->mstate == MS_LOCKED && cs->connected) {
cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS);
cs->ops->baud_rate(cs, B115200);
cs->ops->set_line_ctrl(cs, CS8);
cs->control_state = TIOCM_DTR|TIOCM_RTS;
}
cs->waiting = 1;
if (!gigaset_add_event(cs, &cs->at_state, EV_IF_LOCK,
NULL, cmd, NULL)) {
cs->waiting = 0;
return -ENOMEM;
}
gig_dbg(DEBUG_CMD, "scheduling IF_LOCK");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
if (cs->cmd_result >= 0) {
*arg = cs->cmd_result;
return 0;
}
return cs->cmd_result;
}