From 96e5aaf914060a02955b09487e176769a75ae225 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Fri, 14 Jun 2019 11:18:28 +0200 Subject: 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 Acked-by: Sebastian Ott Signed-off-by: Vasily Gorbik --- arch/s390/include/asm/cio.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'arch/s390/include/asm') 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 @@ -264,6 +264,36 @@ struct ciw { #define CIW_TYPE_SII 0x1 /* set interface identifier */ #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() */ -- cgit v1.2.3