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| 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/cio/chsc.c | |
| parent | s390: add eadm related structures (diff) | |
| download | linux-184b08afb5eab8a43d75f4aa0a0f912653f797d7.tar.xz linux-184b08afb5eab8a43d75f4aa0a0f912653f797d7.zip | |
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/cio/chsc.c')
| -rw-r--r-- | drivers/s390/cio/chsc.c | 35 |
1 files changed, 35 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); |