diff options
| author |   Jan Glauber <jang@linux.vnet.ibm.com> | 2012-11-29 12:55:21 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-11-30 15:40:47 +0100 |
| commit | a755a45dd928e05a4fb980d31d4a0dbc49adc562 (patch) | |
| tree | ad7e88579a6a52c06cada11ce59529e3c8888d06 /arch/s390/include/asm/clp.h | |
| parent | s390/pci: base support (diff) | |
| download | linux-dev-a755a45dd928e05a4fb980d31d4a0dbc49adc562.tar.xz linux-dev-a755a45dd928e05a4fb980d31d4a0dbc49adc562.zip | |
s390/pci: CLP interface
CLP instructions are used to query the firmware about detected PCI
functions, the attributes of those functions and to enable or disable
a PCI function. The CLP interface is the equivalent to a PCI bus scan.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/clp.h')
| -rw-r--r-- | arch/s390/include/asm/clp.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/s390/include/asm/clp.h b/arch/s390/include/asm/clp.h new file mode 100644 index 000000000000..6c3aecc245ff --- /dev/null +++ b/arch/s390/include/asm/clp.h @@ -0,0 +1,28 @@ +#ifndef _ASM_S390_CLP_H +#define _ASM_S390_CLP_H + +/* CLP common request & response block size */ +#define CLP_BLK_SIZE (PAGE_SIZE * 2) + +struct clp_req_hdr { + u16 len; + u16 cmd; +} __packed; + +struct clp_rsp_hdr { + u16 len; + u16 rsp; +} __packed; + +/* CLP Response Codes */ +#define CLP_RC_OK 0x0010 /* Command request successfully */ +#define CLP_RC_CMD 0x0020 /* Command code not recognized */ +#define CLP_RC_PERM 0x0030 /* Command not authorized */ +#define CLP_RC_FMT 0x0040 /* Invalid command request format */ +#define CLP_RC_LEN 0x0050 /* Invalid command request length */ +#define CLP_RC_8K 0x0060 /* Command requires 8K LPCB */ +#define CLP_RC_RESNOT0 0x0070 /* Reserved field not zero */ +#define CLP_RC_NODATA 0x0080 /* No data available */ +#define CLP_RC_FC_UNKNOWN 0x0100 /* Function code not recognized */ + +#endif |