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author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-01-13 12:54:28 +0100 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-03-07 16:54:32 +0100 |
commit | 988b86e69ded17f0f1209fd3ef1c4c7f1567dcc1 (patch) | |
tree | 7ef6e69d88c827190cc5f66f417efc04f0d03d6f /arch/s390/include | |
parent | baebc70a4db86515d55ff1f226088a8e7f5821a0 (diff) | |
download | linux-988b86e69ded17f0f1209fd3ef1c4c7f1567dcc1.tar.gz linux-988b86e69ded17f0f1209fd3ef1c4c7f1567dcc1.tar.bz2 linux-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')
-rw-r--r-- | arch/s390/include/asm/clp.h | 27 | ||||
-rw-r--r-- | arch/s390/include/asm/pci_clp.h | 30 | ||||
-rw-r--r-- | arch/s390/include/uapi/asm/clp.h | 28 |
3 files changed, 58 insertions, 27 deletions
diff --git a/arch/s390/include/asm/clp.h b/arch/s390/include/asm/clp.h index a0e71a501f7c..5687d62fb0cb 100644 --- a/arch/s390/include/asm/clp.h +++ b/arch/s390/include/asm/clp.h @@ -4,14 +4,23 @@ /* CLP common request & response block size */ #define CLP_BLK_SIZE PAGE_SIZE +#define CLP_LPS_BASE 0 +#define CLP_LPS_PCI 2 + struct clp_req_hdr { u16 len; u16 cmd; + u32 fmt : 4; + u32 reserved1 : 28; + u64 reserved2; } __packed; struct clp_rsp_hdr { u16 len; u16 rsp; + u32 fmt : 4; + u32 reserved1 : 28; + u64 reserved2; } __packed; /* CLP Response Codes */ @@ -25,4 +34,22 @@ struct clp_rsp_hdr { #define CLP_RC_NODATA 0x0080 /* No data available */ #define CLP_RC_FC_UNKNOWN 0x0100 /* Function code not recognized */ +/* Store logical-processor characteristics request */ +struct clp_req_slpc { + struct clp_req_hdr hdr; +} __packed; + +struct clp_rsp_slpc { + struct clp_rsp_hdr hdr; + u32 reserved2[4]; + u32 lpif[8]; + u32 reserved3[8]; + u32 lpic[8]; +} __packed; + +struct clp_req_rsp_slpc { + struct clp_req_slpc request; + struct clp_rsp_slpc response; +} __packed; + #endif diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h index dd78f92f1cce..e75c64cbcf08 100644 --- a/arch/s390/include/asm/pci_clp.h +++ b/arch/s390/include/asm/pci_clp.h @@ -49,9 +49,6 @@ struct clp_fh_list_entry { /* List PCI functions request */ struct clp_req_list_pci { struct clp_req_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; u64 resume_token; u64 reserved2; } __packed; @@ -59,9 +56,6 @@ struct clp_req_list_pci { /* List PCI functions response */ struct clp_rsp_list_pci { struct clp_rsp_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; u64 resume_token; u32 reserved2; u16 max_fn; @@ -73,9 +67,6 @@ struct clp_rsp_list_pci { /* Query PCI function request */ struct clp_req_query_pci { struct clp_req_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; u32 fh; /* function handle */ u32 reserved2; u64 reserved3; @@ -84,9 +75,6 @@ struct clp_req_query_pci { /* Query PCI function response */ struct clp_rsp_query_pci { struct clp_rsp_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 : 64; u16 vfn; /* virtual fn number */ u16 : 7; u16 util_str_avail : 1; /* utility string available? */ @@ -108,21 +96,15 @@ struct clp_rsp_query_pci { /* Query PCI function group request */ struct clp_req_query_pci_grp { struct clp_req_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; - u32 : 24; + u32 reserved2 : 24; u32 pfgid : 8; /* function group id */ - u32 reserved2; - u64 reserved3; + u32 reserved3; + u64 reserved4; } __packed; /* Query PCI function group response */ struct clp_rsp_query_pci_grp { struct clp_rsp_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; u16 : 4; u16 noi : 12; /* number of interrupts */ u8 version; @@ -141,9 +123,6 @@ struct clp_rsp_query_pci_grp { /* Set PCI function request */ struct clp_req_set_pci { struct clp_req_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; u32 fh; /* function handle */ u16 reserved2; u8 oc; /* operation controls */ @@ -154,9 +133,6 @@ struct clp_req_set_pci { /* Set PCI function response */ struct clp_rsp_set_pci { struct clp_rsp_hdr hdr; - u32 fmt : 4; /* cmd request block format */ - u32 : 28; - u64 reserved1; u32 fh; /* function handle */ u32 reserved3; u64 reserved4; 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 |