static int ni_tio_input_cmd(struct ni_gpct *counter, struct comedi_async *async)
{
struct ni_gpct_device *counter_dev = counter->counter_dev;
unsigned cidx = counter->counter_index;
struct comedi_cmd *cmd = &async->cmd;
int retval = 0;
/* write alloc the entire buffer */
comedi_buf_write_alloc(async, async->prealloc_bufsz);
counter->mite_chan->dir = COMEDI_INPUT;
switch (counter_dev->variant) {
case ni_gpct_variant_m_series:
case ni_gpct_variant_660x:
mite_prep_dma(counter->mite_chan, 32, 32);
break;
case ni_gpct_variant_e_series:
mite_prep_dma(counter->mite_chan, 16, 32);
break;
default:
BUG();
break;
}
ni_tio_set_bits(counter, NITIO_CMD_REG(cidx), Gi_Save_Trace_Bit, 0);
ni_tio_configure_dma(counter, 1, 1);
switch (cmd->start_src) {
case TRIG_NOW:
async->inttrig = NULL;
mite_dma_arm(counter->mite_chan);
retval = ni_tio_arm(counter, 1, NI_GPCT_ARM_IMMEDIATE);
break;
case TRIG_INT:
async->inttrig = &ni_tio_input_inttrig;
break;
case TRIG_EXT:
async->inttrig = NULL;
mite_dma_arm(counter->mite_chan);
retval = ni_tio_arm(counter, 1, cmd->start_arg);
break;
case TRIG_OTHER:
async->inttrig = NULL;
mite_dma_arm(counter->mite_chan);
break;
default:
BUG();
break;
}
return retval;
}
static int ni_tio_output_cmd(struct ni_gpct *counter, comedi_async * async)
{
rt_printk("ni_tio: output commands not yet implemented.\n");
return -ENOTSUPP;
counter->mite_chan->dir = COMEDI_OUTPUT;
mite_prep_dma(counter->mite_chan, 32, 32);
ni_tio_configure_dma(counter, 1, 0);
mite_dma_arm(counter->mite_chan);
return ni_tio_arm(counter, 1, NI_GPCT_ARM_IMMEDIATE);
}
static int ni_tio_input_cmd(struct comedi_subdevice *s)
{
struct ni_gpct *counter = s->private;
struct ni_gpct_device *counter_dev = counter->counter_dev;
unsigned cidx = counter->counter_index;
struct comedi_async *async = s->async;
struct comedi_cmd *cmd = &async->cmd;
int ret = 0;
/* write alloc the entire buffer */
comedi_buf_write_alloc(s, async->prealloc_bufsz);
counter->mite_chan->dir = COMEDI_INPUT;
switch (counter_dev->variant) {
case ni_gpct_variant_m_series:
case ni_gpct_variant_660x:
mite_prep_dma(counter->mite_chan, 32, 32);
break;
case ni_gpct_variant_e_series:
mite_prep_dma(counter->mite_chan, 16, 32);
break;
default:
BUG();
break;
}
ni_tio_set_bits(counter, NITIO_CMD_REG(cidx), GI_SAVE_TRACE, 0);
ni_tio_configure_dma(counter, true, true);
if (cmd->start_src == TRIG_INT) {
async->inttrig = &ni_tio_input_inttrig;
} else { /* TRIG_NOW || TRIG_EXT || TRIG_OTHER */
async->inttrig = NULL;
mite_dma_arm(counter->mite_chan);
if (cmd->start_src == TRIG_NOW)
ret = ni_tio_arm(counter, 1, NI_GPCT_ARM_IMMEDIATE);
else if (cmd->start_src == TRIG_EXT)
ret = ni_tio_arm(counter, 1, cmd->start_arg);
}
return ret;
}
static int ni_tio_output_cmd(struct comedi_subdevice *s)
{
struct ni_gpct *counter = s->private;
dev_err(counter->counter_dev->dev->class_dev,
"output commands not yet implemented.\n");
return -ENOTSUPP;
counter->mite_chan->dir = COMEDI_OUTPUT;
mite_prep_dma(counter->mite_chan, 32, 32);
ni_tio_configure_dma(counter, true, false);
mite_dma_arm(counter->mite_chan);
return ni_tio_arm(counter, 1, NI_GPCT_ARM_IMMEDIATE);
}
static int setup_mite_dma(struct comedi_device *dev, struct comedi_subdevice *s)
{
int retval;
retval = ni_pcidio_request_di_mite_channel(dev);
if (retval)
return retval;
devpriv->di_mite_chan->dir = COMEDI_INPUT;
mite_prep_dma(devpriv->di_mite_chan, 32, 32);
mite_dma_arm(devpriv->di_mite_chan);
return 0;
}
static int setup_mite_dma(struct comedi_device *dev, struct comedi_subdevice *s)
{
int retval;
unsigned long flags;
retval = ni_pcidio_request_di_mite_channel(dev);
if (retval)
return retval;
/* write alloc the entire buffer */
comedi_buf_write_alloc(s->async, s->async->prealloc_bufsz);
spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
if (devpriv->di_mite_chan) {
mite_prep_dma(devpriv->di_mite_chan, 32, 32);
mite_dma_arm(devpriv->di_mite_chan);
} else
retval = -EIO;
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
return retval;
}