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| author | Xiao Feng Ren <renxiaof@linux.vnet.ibm.com> | 2017-05-17 02:48:11 +0200 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2017-05-19 12:29:01 +0200 |
| commit | bab482d7405f9fe3cac9c213d60f9ca9442c047b (patch) | |
| tree | 7dc7df9f07152940bbfb2ee1034a982f44b66682 /target/s390x/ioinst.c | |
| parent | 8ca2b376b47fff58f7ab6f16d86a66d4af3a2be2 (diff) | |
| download | qemu-bab482d7405f9fe3cac9c213d60f9ca9442c047b.zip qemu-bab482d7405f9fe3cac9c213d60f9ca9442c047b.tar.gz qemu-bab482d7405f9fe3cac9c213d60f9ca9442c047b.tar.bz2 | |
s390x/css: ccw translation infrastructure
Implement a basic infrastructure of handling channel I/O instruction
interception for passed through subchannels:
1. Branch the code path of instruction interception handling by
SubChannel type.
2. For a passed-through subchannel, issue the ORB to kernel to do ccw
translation and perform an I/O operation.
3. Assign different condition code based on the I/O result, or
trigger a program check.
Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-12-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'target/s390x/ioinst.c')
| -rw-r--r-- | target/s390x/ioinst.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/target/s390x/ioinst.c b/target/s390x/ioinst.c index 590bfa4..62a7771 100644 --- a/target/s390x/ioinst.c +++ b/target/s390x/ioinst.c @@ -244,6 +244,15 @@ void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb) case -EBUSY: cc = 2; break; + case -EFAULT: + /* + * TODO: + * I'm wondering whether there is something better + * to do for us here (like setting some device or + * subchannel status). + */ + program_interrupt(env, PGM_ADDRESSING, 4); + return; case 0: cc = 0; break; |