From: David Kershner <david.kersh...@unisys.com>
Instead of having our own timer to set off a interrupt, use the shared code
from visorbus. When visorbus gets s-Par interrupts working we will
automatically get support from it.
Signed-off-by: David Kershner <david.kersh...@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.ro...@unisys.com>
---
drivers/staging/unisys/visornic/visornic_main.c | 59 +++++++++----------------
1 file changed, 21 insertions(+), 38 deletions(-)
diff --git a/drivers/staging/unisys/visornic/visornic_main.c
b/drivers/staging/unisys/visornic/visornic_main.c
index 296b11c..9bf5bfd 100644
--- a/drivers/staging/unisys/visornic/visornic_main.c
+++ b/drivers/staging/unisys/visornic/visornic_main.c
@@ -43,6 +43,7 @@ static int visornic_pause(struct visor_device *dev,
visorbus_state_complete_func complete_func);
static int visornic_resume(struct visor_device *dev,
visorbus_state_complete_func complete_func);
+static void visornic_irq(struct visor_device *v);
/* DEBUGFS declarations */
static ssize_t info_debugfs_read(struct file *file, char __user *buf,
@@ -92,7 +93,7 @@ static struct visor_driver visornic_driver = {
.remove = visornic_remove,
.pause = visornic_pause,
.resume = visornic_resume,
- .channel_interrupt = NULL,
+ .channel_interrupt = visornic_irq,
};
struct chanstat {
@@ -117,7 +118,6 @@ struct visornic_devdata {
struct visor_device *dev;
struct net_device *netdev;
struct net_device_stats net_stats;
- atomic_t interrupt_rcvd;
wait_queue_head_t rsp_queue;
struct sk_buff **rcvbuf;
u64 incarnation_id; /* lets IOPART know about re-birth */
@@ -190,13 +190,11 @@ struct visornic_devdata {
int queuefullmsg_logged;
struct chanstat chstat;
- struct timer_list irq_poll_timer;
struct napi_struct napi;
struct uiscmdrsp cmdrsp[SIZEOF_CMDRSP];
};
static int visornic_poll(struct napi_struct *napi, int budget);
-static void poll_for_irq(unsigned long v);
/**
* visor_copy_fragsinfo_from_skb(
@@ -326,7 +324,7 @@ visornic_serverdown_complete(struct visornic_devdata
*devdata)
netdev = devdata->netdev;
/* Stop polling for interrupts */
- del_timer_sync(&devdata->irq_poll_timer);
+ visorbus_disable_channel_interrupts(devdata->dev);
rtnl_lock();
dev_close(netdev);
@@ -1618,8 +1616,6 @@ service_resp_queue(struct uiscmdrsp *cmdrsp, struct
visornic_devdata *devdata,
unsigned long flags;
struct net_device *netdev;
- /* TODO: CLIENT ACQUIRE -- Don't really need this at the
- * moment */
for (;;) {
if (!visorchannel_signalremove(devdata->dev->visorchannel,
IOCHAN_FROM_IOPART,
@@ -1722,7 +1718,7 @@ static int visornic_poll(struct napi_struct *napi, int
budget)
}
/**
- * poll_for_irq - Checks the status of the response queue.
+ * visornic_irq - Checks the status of the response queue.
* @v: void pointer to the visronic devdata
*
* Main function of the vnic_incoming thread. Peridocially check the
@@ -1730,19 +1726,13 @@ static int visornic_poll(struct napi_struct *napi, int
budget)
* Returns when thread has stopped.
*/
static void
-poll_for_irq(unsigned long v)
+visornic_irq(struct visor_device *v)
{
- struct visornic_devdata *devdata = (struct visornic_devdata *)v;
+ struct visornic_devdata *devdata = dev_get_drvdata(&v->device);
- if (!visorchannel_signalempty(
- devdata->dev->visorchannel,
- IOCHAN_FROM_IOPART))
+ if (!visorchannel_signalempty(devdata->dev->visorchannel,
+ IOCHAN_FROM_IOPART))
napi_schedule(&devdata->napi);
-
- atomic_set(&devdata->interrupt_rcvd, 0);
-
- mod_timer(&devdata->irq_poll_timer, msecs_to_jiffies(2));
-
}
/**
@@ -1861,19 +1851,6 @@ static int visornic_probe(struct visor_device *dev)
goto cleanup_xmit_cmdrsp;
}
- /* TODO: Setup Interrupt information */
- /* Let's start our threads to get responses */
- netif_napi_add(netdev, &devdata->napi, visornic_poll, 64);
-
- setup_timer(&devdata->irq_poll_timer, poll_for_irq,
- (unsigned long)devdata);
- /*
- * Note: This time has to start running before the while
- * loop below because the napi routine is responsible for
- * setting enab_dis_acked
- */
- mod_timer(&devdata->irq_poll_timer, msecs_to_jiffies(2));
-
channel_offset = offsetof(struct spar_io_channel_protocol,
channel_header.features);
err = visorbus_read_channel(dev, channel_offset, &features, 8);
@@ -1894,6 +1871,16 @@ static int visornic_probe(struct visor_device *dev)
goto cleanup_napi_add;
}
+ /* Let's start our threads to get responses */
+ netif_napi_add(netdev, &devdata->napi, visornic_poll, 64);
+
+ /*
+ * Note: Interupts have to be enable before the while
+ * loop below because the napi routine is responsible for
+ * setting enab_dis_acked
+ */
+ visorbus_enable_channel_interrupts(dev);
+
err = register_netdev(netdev);
if (err) {
dev_err(&dev->device,
@@ -1920,7 +1907,7 @@ cleanup_register_netdev:
unregister_netdev(netdev);
cleanup_napi_add:
- del_timer_sync(&devdata->irq_poll_timer);
+ visorbus_disable_channel_interrupts(dev);
netif_napi_del(&devdata->napi);
cleanup_xmit_cmdrsp:
@@ -1991,7 +1978,7 @@ static void visornic_remove(struct visor_device *dev)
unregister_netdev(netdev); /* this will call visornic_close() */
- del_timer_sync(&devdata->irq_poll_timer);
+ visorbus_disable_channel_interrupts(dev);
netif_napi_del(&devdata->napi);
dev_set_drvdata(&dev->device, NULL);
@@ -2063,11 +2050,7 @@ static int visornic_resume(struct visor_device *dev,
devdata->server_change_state = true;
spin_unlock_irqrestore(&devdata->priv_lock, flags);
- /* Must transition channel to ATTACHED state BEFORE
- * we can start using the device again.
- * TODO: State transitions
- */
- mod_timer(&devdata->irq_poll_timer, msecs_to_jiffies(2));
+ visorbus_enable_channel_interrupts(dev);
init_rcv_bufs(netdev, devdata);
--
2.5.0
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