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s390/qdio: cleanup chsc SADC usage

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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>
This commit is contained in:
Sebastian Ott
2013-06-05 18:59:22 +02:00
committed by Martin Schwidefsky
parent da5b6cb162
commit ca4ba153f9
4 changed files with 73 additions and 54 deletions
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37
drivers/s390/cio/chsc.c
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@@ -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);