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Thu, 17 Jun 2021 23:25:38 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 4958) id 25A4BE033C; Fri, 18 Jun 2021 01:25:38 +0200 (CEST) From: Eric Farman To: Cornelia Huck , qemu-devel@nongnu.org, qemu-s390x@nongnu.org Subject: [PATCH v4 1/4] s390x/css: Introduce an ESW struct Date: Fri, 18 Jun 2021 01:25:34 +0200 Message-Id: <20210617232537.1337506-2-farman@linux.ibm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210617232537.1337506-1-farman@linux.ibm.com> References: <20210617232537.1337506-1-farman@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: LCP60CSJ-gNQNtGZX0zvxDDDhVmFkMwx X-Proofpoint-GUID: ZQer7c2rrDd2wQECEjp3UXuDYhZr6AAs X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.790 definitions=2021-06-17_16:2021-06-15, 2021-06-17 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 adultscore=0 clxscore=1015 lowpriorityscore=0 mlxlogscore=999 suspectscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106170140 Received-SPF: pass client-ip=148.163.156.1; envelope-from=farman@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , Matthew Rosato , David Hildenbrand , Richard Henderson , Eric Farman , Halil Pasic , Christian Borntraeger , Alex Williamson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The Interrupt Response Block is comprised of several other structures concatenated together, but only the 12-byte Subchannel-Status Word (SCSW) is defined as a proper struct. Everything else is a simple array of 32-bit words. Let's define a proper struct for the 20-byte Extended-Status Word (ESW) so that we can make good decisions about the sense data that would go into the ECW area for virtual vs passthrough devices. Signed-off-by: Eric Farman --- hw/s390x/css.c | 19 +++++++++++++------ include/hw/s390x/ioinst.h | 12 +++++++++++- 2 files changed, 24 insertions(+), 7 deletions(-) diff --git a/hw/s390x/css.c b/hw/s390x/css.c index bed46f5ec3..59d935570e 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -1335,6 +1335,14 @@ static void copy_schib_to_guest(SCHIB *dest, const SCHIB *src) } } +static void copy_esw_to_guest(ESW *dest, const ESW *src) +{ + dest->word0 = cpu_to_be32(src->word0); + dest->erw = cpu_to_be32(src->erw); + dest->f_addr = cpu_to_be64(src->f_addr); + dest->s_addr = cpu_to_be32(src->s_addr); +} + IOInstEnding css_do_stsch(SubchDev *sch, SCHIB *schib) { int ret; @@ -1604,9 +1612,8 @@ static void copy_irb_to_guest(IRB *dest, const IRB *src, const PMCW *pmcw, copy_scsw_to_guest(&dest->scsw, &src->scsw); - for (i = 0; i < ARRAY_SIZE(dest->esw); i++) { - dest->esw[i] = cpu_to_be32(src->esw[i]); - } + copy_esw_to_guest(&dest->esw, &src->esw); + for (i = 0; i < ARRAY_SIZE(dest->ecw); i++) { dest->ecw[i] = cpu_to_be32(src->ecw[i]); } @@ -1655,9 +1662,9 @@ int css_do_tsch_get_irb(SubchDev *sch, IRB *target_irb, int *irb_len) SCSW_CSTAT_CHN_CTRL_CHK | SCSW_CSTAT_INTF_CTRL_CHK)) { irb.scsw.flags |= SCSW_FLAGS_MASK_ESWF; - irb.esw[0] = 0x04804000; + irb.esw.word0 = 0x04804000; } else { - irb.esw[0] = 0x00800000; + irb.esw.word0 = 0x00800000; } /* If a unit check is pending, copy sense data. */ if ((schib->scsw.dstat & SCSW_DSTAT_UNIT_CHECK) && @@ -1670,7 +1677,7 @@ int css_do_tsch_get_irb(SubchDev *sch, IRB *target_irb, int *irb_len) for (i = 0; i < ARRAY_SIZE(irb.ecw); i++) { irb.ecw[i] = be32_to_cpu(irb.ecw[i]); } - irb.esw[1] = 0x01000000 | (sizeof(sch->sense_data) << 8); + irb.esw.erw = ESW_ERW_SENSE | (sizeof(sch->sense_data) << 8); } } /* Store the irb to the guest. */ diff --git a/include/hw/s390x/ioinst.h b/include/hw/s390x/ioinst.h index c6737a30d4..e7ab401781 100644 --- a/include/hw/s390x/ioinst.h +++ b/include/hw/s390x/ioinst.h @@ -123,10 +123,20 @@ typedef struct SCHIB { uint8_t mda[4]; } QEMU_PACKED SCHIB; +/* format-0 extended-status word */ +typedef struct ESW { + uint32_t word0; + uint32_t erw; + uint64_t f_addr; /* Zeros for other ESW formats */ + uint32_t s_addr; /* Zeros for other ESW formats */ +} QEMU_PACKED ESW; + +#define ESW_ERW_SENSE 0x01000000 + /* interruption response block */ typedef struct IRB { SCSW scsw; - uint32_t esw[5]; + ESW esw; uint32_t ecw[8]; uint32_t emw[8]; } IRB; -- 2.25.1