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sparc64: Add vio_set_intr() to enable/disable Rx interrupts 

The vio_set_intr() API should be used by VIO consumers to enable/disable
Rx interrupts to facilitate deferred processing in softirq/bottom-half
context.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sowmini Varadhan 2014-09-23 11:37:44 -04:00 committed by David S. Miller
parent d0aedcd4f1
commit ca605b7dd7
2 changed files with 14 additions and 1 deletions
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2
arch/sparc/include/asm/vio.h
View File

@ -298,6 +298,7 @@ struct vio_dev {
unsigned int tx_irq; unsigned int tx_irq;
unsigned int rx_irq; unsigned int rx_irq;
u64 rx_ino;
struct device dev; struct device dev;
}; };
@ -453,5 +454,6 @@ int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
char *name); char *name);
void vio_port_up(struct vio_driver_state *vio); void vio_port_up(struct vio_driver_state *vio);
int vio_set_intr(unsigned long dev_ino, int state);
#endif /* _SPARC64_VIO_H */ #endif /* _SPARC64_VIO_H */

13
arch/sparc/kernel/vio.c
View File

@ -180,8 +180,10 @@ static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
vdev->tx_irq = sun4v_build_virq(cdev_cfg_handle, *irq); vdev->tx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
irq = mdesc_get_property(hp, target, "rx-ino", NULL); irq = mdesc_get_property(hp, target, "rx-ino", NULL);
if (irq) if (irq) {
vdev->rx_irq = sun4v_build_virq(cdev_cfg_handle, *irq); vdev->rx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
vdev->rx_ino = *irq;
}
chan_id = mdesc_get_property(hp, target, "id", NULL); chan_id = mdesc_get_property(hp, target, "id", NULL);
if (chan_id) if (chan_id)
@ -189,6 +191,15 @@ static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
} }
} }
int vio_set_intr(unsigned long dev_ino, int state)
{
int err;
err = sun4v_vintr_set_valid(cdev_cfg_handle, dev_ino, state);
return err;
}
EXPORT_SYMBOL(vio_set_intr);
static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp, static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
struct device *parent) struct device *parent)
{ {