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| author | Jag Raman <jag.raman@oracle.com> | 2017-08-15 17:03:00 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-15 21:33:51 -0700 |
| commit | 5d171050e28f823aeb040f2830da4d3422b54b63 (patch) | |
| tree | 0a33555a897bb343261d0b066079e7f7d479ef1e /arch/sparc | |
| parent | ce808b746325975192d8cd1d29f1ec03d5b6b0fc (diff) | |
| download | linux-5d171050e28f823aeb040f2830da4d3422b54b63.tar.bz2 | |
sparc64: vcc: Enable VCC port probe and removal
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>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/vio.h | 9 | ||||
| -rw-r--r-- | arch/sparc/kernel/vio.c | 1 | ||||
| -rw-r--r-- | arch/sparc/kernel/viohs.c | 12 |
3 files changed, 19 insertions, 3 deletions
diff --git a/arch/sparc/include/asm/vio.h b/arch/sparc/include/asm/vio.h index d1c47e9f0090..f3d4ac232690 100644 --- a/arch/sparc/include/asm/vio.h +++ b/arch/sparc/include/asm/vio.h @@ -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); diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c index 1c8763c9c52b..da1ac3f22b24 100644 --- a/arch/sparc/kernel/vio.c +++ b/arch/sparc/kernel/vio.c @@ -246,6 +246,7 @@ u64 vio_vdev_node(struct mdesc_handle *hp, struct vio_dev *vdev) return node; } +EXPORT_SYMBOL(vio_vdev_node); static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp, struct vio_dev *vdev) diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c index d4f13c037a40..dcd278f29573 100644 --- a/arch/sparc/kernel/viohs.c +++ b/arch/sparc/kernel/viohs.c @@ -814,15 +814,21 @@ int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev, case VDEV_NETWORK_SWITCH: case VDEV_DISK: case VDEV_DISK_SERVER: + case VDEV_CONSOLE_CON: break; default: return -EINVAL; } - if (!ops || !ops->send_attr || !ops->handle_attr || - !ops->handshake_complete) - return -EINVAL; + if (dev_class == VDEV_NETWORK || + dev_class == VDEV_NETWORK_SWITCH || + dev_class == VDEV_DISK || + dev_class == VDEV_DISK_SERVER) { + if (!ops || !ops->send_attr || !ops->handle_attr || + !ops->handshake_complete) + return -EINVAL; + } if (!ver_table || ver_table_size < 0) return -EINVAL; |