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| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2014-09-23 17:37:44 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-30 23:40:45 +0200 |
| commit | ca605b7dd740c8909408d67911d8ddd272c2b320 (patch) | |
| tree | 9832c8fbbb26f2b6236a969b44aab949d57a4742 /arch/sparc | |
| parent | vio: fix reuse of vio_dring slot (diff) | |
| download | linux-ca605b7dd740c8909408d67911d8ddd272c2b320.tar.xz linux-ca605b7dd740c8909408d67911d8ddd272c2b320.zip | |
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>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/vio.h | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/vio.c | 13 |
2 files changed, 14 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/vio.h b/arch/sparc/include/asm/vio.h index 7fce9b1e6228..d758c8d8f47d 100644 --- a/arch/sparc/include/asm/vio.h +++ b/arch/sparc/include/asm/vio.h @@ -298,6 +298,7 @@ struct vio_dev { unsigned int tx_irq; unsigned int rx_irq; + u64 rx_ino; struct device dev; }; @@ -453,5 +454,6 @@ int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev, char *name); void vio_port_up(struct vio_driver_state *vio); +int vio_set_intr(unsigned long dev_ino, int state); #endif /* _SPARC64_VIO_H */ diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c index 8647fcc5ca6c..cb5789c9f961 100644 --- a/arch/sparc/kernel/vio.c +++ b/arch/sparc/kernel/vio.c @@ -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); 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_ino = *irq; + } chan_id = mdesc_get_property(hp, target, "id", NULL); 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, struct device *parent) { |