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| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-06-14 12:18:28 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-06-19 18:54:27 +0300 |
| commit | 96e5aaf914060a02955b09487e176769a75ae225 (patch) | |
| tree | dafa21df1b1df7b91d65feb085408437e716f4b3 /arch/s390/include/asm | |
| parent | 4f18d869ffd056c7858f3d617c71345cf19be008 (diff) | |
| download | linux-96e5aaf914060a02955b09487e176769a75ae225.tar.xz | |
s390/cio: move struct node_descriptor to cio.h
This allows device drivers (eg. qeth) to use the struct when processing
information retrieved via RCD.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/cio.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h index 58e7db912c30..b5bfb3123cb1 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -265,6 +265,36 @@ struct ciw { #define CIW_TYPE_RNI 0x2 /* read node identifier */ /* + * Node Descriptor as defined in SA22-7204, "Common I/O-Device Commands" + */ + +#define ND_VALIDITY_VALID 0 +#define ND_VALIDITY_OUTDATED 1 +#define ND_VALIDITY_INVALID 2 + +struct node_descriptor { + /* Flags. */ + union { + struct { + u32 validity:3; + u32 reserved:5; + } __packed; + u8 byte0; + } __packed; + + /* Node parameters. */ + u32 params:24; + + /* Node ID. */ + char type[6]; + char model[3]; + char manufacturer[3]; + char plant[2]; + char seq[12]; + u16 tag; +} __packed; + +/* * Flags used as input parameters for do_IO() */ #define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */ |