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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-06-05 20:59:22 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-06-26 23:10:15 +0400 |
| commit | ca4ba153f985d0c1478ccf05ac95314402bc08a7 (patch) | |
| tree | 101cdcd952ae59fd42192aad4dd1b9bbfb08238e /drivers/s390/cio/chsc.c | |
| parent | da5b6cb162b6bef39d76446a5e015d6a111459b1 (diff) | |
| download | linux-ca4ba153f985d0c1478ccf05ac95314402bc08a7.tar.xz | |
s390/qdio: cleanup chsc SADC usage
Move the code to issue the set adapter device controls command to
chsc.c and make it accessible for the qdio code via the wrapper
chsc_sadc.
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
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 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index d119d0d87e9b..13299f902676 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -20,6 +20,7 @@ #include <asm/chpid.h> #include <asm/chsc.h> #include <asm/crw.h> +#include <asm/isc.h> #include "css.h" #include "cio.h" @@ -167,6 +168,42 @@ int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd) } EXPORT_SYMBOL_GPL(chsc_ssqd); +/** + * chsc_sadc() - set adapter device controls (SADC) + * @schid: id of the subchannel on which SADC is performed + * @scssc: request and response block for SADC + * @summary_indicator_addr: summary indicator address + * @subchannel_indicator_addr: subchannel indicator address + * + * Returns 0 on success. + */ +int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, + u64 summary_indicator_addr, u64 subchannel_indicator_addr) +{ + memset(scssc, 0, sizeof(*scssc)); + scssc->request.length = 0x0fe0; + scssc->request.code = 0x0021; + scssc->operation_code = 0; + + scssc->summary_indicator_addr = summary_indicator_addr; + scssc->subchannel_indicator_addr = subchannel_indicator_addr; + + scssc->ks = PAGE_DEFAULT_KEY >> 4; + scssc->kc = PAGE_DEFAULT_KEY >> 4; + scssc->isc = QDIO_AIRQ_ISC; + scssc->schid = schid; + + /* enable the time delay disablement facility */ + if (css_general_characteristics.aif_tdd) + scssc->word_with_d_bit = 0x10000000; + + if (chsc(scssc)) + return -EIO; + + return chsc_error_from_response(scssc->response.code); +} +EXPORT_SYMBOL_GPL(chsc_sadc); + static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data) { spin_lock_irq(sch->lock); |