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| author | Harald Freudenberger <freude@linux.ibm.com> | 2023-03-10 19:46:49 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-03-20 13:12:49 +0300 |
| commit | 2d72eaf036d2f2b7ec16cda2d0e7ce292537dad9 (patch) | |
| tree | f1bb1e46d956db7f1e6d308b6b869b83ee42727f /arch/s390 | |
| parent | 263c8454dbffd4b878ea9bb403e157a56de98aca (diff) | |
| download | linux-2d72eaf036d2f2b7ec16cda2d0e7ce292537dad9.tar.xz | |
s390/ap: implement SE AP bind, unbind and associate
Implementation of the new functions for SE AP support:
bind, unbind and associate. There are two new sysfs
attributes for this:
/sys/devices/ap/cardxx/xx.yyyy/se_bind
/sys/devices/ap/cardxx/xx.yyyy/se_associate
Writing a 1 into the se_bind attribute triggers the
SE AP bind for this AP queue, writing a 0 into does
an unbind - that's a reset (RAPQ) with the F bit enabled.
The se_associate attribute needs an integer value in
range 0...2^16-1 written in. This is the index into a
secrets table feed into the ultravisor. For more details
please see the Architecture documents.
These both new ap queue attributes are only visible
inside a SE guest with SB (Secure Binding) available.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/ap.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index 92b04d66d69a..d5d967166bac 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -43,10 +43,11 @@ struct ap_queue_status { unsigned int queue_empty : 1; unsigned int replies_waiting : 1; unsigned int queue_full : 1; - unsigned int _pad1 : 4; + unsigned int : 3; + unsigned int async : 1; unsigned int irq_enabled : 1; unsigned int response_code : 8; - unsigned int _pad2 : 16; + unsigned int : 16; }; /* @@ -114,6 +115,14 @@ struct ap_tapq_gr2 { }; }; +/* + * Convenience defines to be used with the bs field from struct ap_tapq_gr2 + */ +#define AP_BS_Q_USABLE 0 +#define AP_BS_Q_USABLE_NO_SECURE_KEY 1 +#define AP_BS_Q_AVAIL_FOR_BINDING 2 +#define AP_BS_Q_UNUSABLE 3 + /** * ap_tapq(): Test adjunct processor queue. * @qid: The AP queue number |