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sparc64: vcc: Enable VCC port probe and removal

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Enables VCC port probe and removal to initialize and terminate
VCC ports respectively. When a device/port matching the VCC driver
is added, the probe function is invoked along with a reference
to the device. remove function is called when the device is
removed.

Also add APIs to cache and retrieve VCC ports from a VCC table

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
2017-08-15 17:03:00 -04:00
committed by David S. Miller
parent ce808b7463
commit 5d171050e2
4 changed files with 398 additions and 3 deletions
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9
arch/sparc/include/asm/vio.h
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@@ -52,6 +52,7 @@ struct vio_ver_info {
#define VDEV_NETWORK_SWITCH 0x02
#define VDEV_DISK 0x03
#define VDEV_DISK_SERVER 0x04
#define VDEV_CONSOLE_CON 0x05
u8 resv1[3];
u64 resv2[5];
@@ -282,6 +283,14 @@ struct vio_dring_state {
struct ldc_trans_cookie cookies[VIO_MAX_RING_COOKIES];
};
#define VIO_TAG_SIZE ((int)sizeof(struct vio_msg_tag))
#define VIO_VCC_MTU_SIZE (LDC_PACKET_SIZE - VIO_TAG_SIZE)
struct vio_vcc {
struct vio_msg_tag tag;
char data[VIO_VCC_MTU_SIZE];
};
static inline void *vio_dring_cur(struct vio_dring_state *dr)
{
return dr->base + (dr->entry_size * dr->prod);