From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cornelia Huck Subject: [PATCH 3/5] s390: Add a mechanism to get the subchannel id. Date: Fri, 7 Dec 2012 13:29:27 +0100 Message-ID: <1354883369-36537-4-git-send-email-cornelia.huck@de.ibm.com> References: <1354883369-36537-1-git-send-email-cornelia.huck@de.ibm.com> Cc: Avi Kivity , Christian Borntraeger , Carsten Otte , Alexander Graf , Heiko Carstens , Martin Schwidefsky , Sebastian Ott To: Marcelo Tosatti , Gleb Natapov , KVM , linux-s390 Return-path: Received: from e06smtp11.uk.ibm.com ([195.75.94.107]:49441 "EHLO e06smtp11.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933740Ab2LGM3h (ORCPT ); Fri, 7 Dec 2012 07:29:37 -0500 Received: from /spool/local by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 7 Dec 2012 12:29:25 -0000 In-Reply-To: <1354883369-36537-1-git-send-email-cornelia.huck@de.ibm.com> Sender: kvm-owner@vger.kernel.org List-ID: This will be needed by the new virtio-ccw transport. Signed-off-by: Cornelia Huck --- arch/s390/include/asm/ccwdev.h | 5 +++++ drivers/s390/cio/device_ops.c | 12 ++++++++++++ 2 files changed, 17 insertions(+) diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h index 1cb4bb3..9ad79f7 100644 --- a/arch/s390/include/asm/ccwdev.h +++ b/arch/s390/include/asm/ccwdev.h @@ -18,6 +18,9 @@ struct irb; struct ccw1; struct ccw_dev_id; +/* from asm/schid.h */ +struct subchannel_id; + /* simplified initializers for struct ccw_device: * CCW_DEVICE and CCW_DEVICE_DEVTYPE initialize one * entry in your MODULE_DEVICE_TABLE and set the match_flag correctly */ @@ -226,5 +229,7 @@ int ccw_device_siosl(struct ccw_device *); // FIXME: these have to go extern int _ccw_device_get_subchannel_number(struct ccw_device *); +extern void ccw_device_get_schid(struct ccw_device *, struct subchannel_id *); + extern void *ccw_device_get_chp_desc(struct ccw_device *, int); #endif /* _S390_CCWDEV_H_ */ diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index ec7fb6d..2ad832f 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -763,6 +763,18 @@ _ccw_device_get_subchannel_number(struct ccw_device *cdev) return cdev->private->schid.sch_no; } +/** + * ccw_device_get_schid - obtain a subchannel id + * @cdev: device to obtain the id for + * @schid: where to fill in the values + */ +void ccw_device_get_schid(struct ccw_device *cdev, struct subchannel_id *schid) +{ + struct subchannel *sch = to_subchannel(cdev->dev.parent); + + *schid = sch->schid; +} +EXPORT_SYMBOL_GPL(ccw_device_get_schid); MODULE_LICENSE("GPL"); EXPORT_SYMBOL(ccw_device_set_options_mask); -- 1.7.12.4