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sparc64: Enhance search for VIO device in MDESC

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Enhances search for VIO device in MDESC by leveraging already existing
MDESC APIs. Enhances changes in earlier patch,
"sparc: Machine description indices can vary", by using existing MD
search functions. It also specifies a match function, thereby
enabling device_find_child() to use it for the purpose of matching
device nodes in MDESC.

An API to find VDEV node in MDESC based on its md_node_info is also
added. It is planned to be used by VIO device clients in the future.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jag Raman
2017-06-23 14:58:39 -04:00
committed by David S. Miller
parent aa512d5ede
commit f4d29ca7de
3 changed files with 64 additions and 63 deletions
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5
arch/sparc/include/asm/vio.h
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@@ -329,7 +329,6 @@ struct vio_dev {
int compat_len;
u64 dev_no;
u64 id;
unsigned long channel_id;
@@ -341,6 +340,9 @@ struct vio_dev {
/* Handle to the root of "channel-devices" sub-tree in MDESC */
u64 cdev_handle;
/* MD specific data used to identify the vdev in MD */
union md_node_info md_node_info;
struct device dev;
};
@@ -497,5 +499,6 @@ int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
void vio_port_up(struct vio_driver_state *vio);
int vio_set_intr(unsigned long dev_ino, int state);
u64 vio_vdev_node(struct mdesc_handle *hp, struct vio_dev *vdev);
#endif /* _SPARC64_VIO_H */