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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-01-13 12:54:28 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-03-07 16:54:32 +0100 |
| commit | 988b86e69ded17f0f1209fd3ef1c4c7f1567dcc1 (patch) | |
| tree | 7ef6e69d88c827190cc5f66f417efc04f0d03d6f /arch/s390/include/uapi/asm/clp.h | |
| parent | baebc70a4db86515d55ff1f226088a8e7f5821a0 (diff) | |
| download | lwn-988b86e69ded17f0f1209fd3ef1c4c7f1567dcc1.tar.gz lwn-988b86e69ded17f0f1209fd3ef1c4c7f1567dcc1.zip | |
s390/pci: add ioctl interface for CLP
Provide a user space interface to issue call logical-processor instructions.
Only selected CLP commands are allowed, enough to get the full overview of
the installed PCI functions.
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi/asm/clp.h')
| -rw-r--r-- | arch/s390/include/uapi/asm/clp.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/clp.h b/arch/s390/include/uapi/asm/clp.h new file mode 100644 index 000000000000..ab72d9d24373 --- /dev/null +++ b/arch/s390/include/uapi/asm/clp.h @@ -0,0 +1,28 @@ +/* + * ioctl interface for /dev/clp + * + * Copyright IBM Corp. 2016 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef _ASM_CLP_H +#define _ASM_CLP_H + +#include <linux/types.h> +#include <linux/ioctl.h> + +struct clp_req { + unsigned int c : 1; + unsigned int r : 1; + unsigned int lps : 6; + unsigned int cmd : 8; + unsigned int : 16; + unsigned int reserved; + __u64 data_p; +}; + +#define CLP_IOCTL_MAGIC 'c' + +#define CLP_SYNC _IOWR(CLP_IOCTL_MAGIC, 0xC1, struct clp_req) + +#endif |