diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2012-08-28 16:45:42 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-09-26 15:44:58 +0200 |
| commit | 184b08afb5eab8a43d75f4aa0a0f912653f797d7 (patch) | |
| tree | 67bf2ce49c623d899335d44a2783c5bad815f81d /drivers/s390 | |
| parent | d2fc439b99820cccd6978918c260730dd97bf373 (diff) | |
s390/chsc: implement store SCM information
chsc_scm_info will be used to detect all available increments of
storage class memory.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/chsc.c | 35 | ||||
| -rw-r--r-- | drivers/s390/cio/chsc.h | 35 |
2 files changed, 70 insertions, 0 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index cfe0c087fe5c..121865385c05 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -52,6 +52,11 @@ int chsc_error_from_response(int response) return -EINVAL; case 0x0004: return -EOPNOTSUPP; + case 0x000b: + return -EBUSY; + case 0x0100: + case 0x0102: + return -ENOMEM; default: return -EIO; } @@ -1047,3 +1052,33 @@ out: return rc; } EXPORT_SYMBOL_GPL(chsc_siosl); + +/** + * chsc_scm_info() - store SCM information (SSI) + * @scm_area: request and response block for SSI + * @token: continuation token + * + * Returns 0 on success. + */ +int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token) +{ + int ccode, ret; + + memset(scm_area, 0, sizeof(*scm_area)); + scm_area->request.length = 0x0020; + scm_area->request.code = 0x004C; + scm_area->reqtok = token; + + ccode = chsc(scm_area); + if (ccode > 0) { + ret = (ccode == 3) ? -ENODEV : -EBUSY; + goto out; + } + ret = chsc_error_from_response(scm_area->response.code); + if (ret != 0) + CIO_MSG_EVENT(2, "chsc: scm info failed (rc=%04x)\n", + scm_area->response.code); +out: + return ret; +} +EXPORT_SYMBOL_GPL(chsc_scm_info); diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index b5261f318fe8..3aa94fe7a676 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -119,4 +119,39 @@ int chsc_error_from_response(int response); int chsc_siosl(struct subchannel_id schid); +/* Functions and definitions to query storage-class memory. */ +struct sale { + u64 sa; + u32 p:4; + u32 op_state:4; + u32 data_state:4; + u32 rank:4; + u32 r:1; + u32:7; + u32 rid:8; + u32:32; +} __packed; + +struct chsc_scm_info { + struct chsc_header request; + u32:32; + u64 reqtok; + u32 reserved1[4]; + struct chsc_header response; + u64:56; + u8 rq; + u32 mbc; + u64 msa; + u16 is; + u16 mmc; + u32 mci; + u64 nr_scm_ini; + u64 nr_scm_unini; + u32 reserved2[10]; + u64 restok; + struct sale scmal[248]; +} __packed; + +int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); + #endif |