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Wed, 04 Mar 2020 20:51:07 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 024Kp56T63373670 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 4 Mar 2020 20:51:05 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9ACF913605D; Wed, 4 Mar 2020 20:51:05 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 199B0136051; Wed, 4 Mar 2020 20:51:05 +0000 (GMT) Received: from [9.70.82.143] (unknown [9.70.82.143]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 4 Mar 2020 20:51:05 +0000 (GMT) Subject: [PATCH V6 10/14] powerpc/vas: Print CRB and FIFO values From: Haren Myneni To: mpe@ellerman.id.au In-Reply-To: <1583353283.18705.2112.camel@hbabu-laptop> References: <1583353283.18705.2112.camel@hbabu-laptop> Content-Type: text/plain; charset="UTF-8" Date: Wed, 04 Mar 2020 12:50:02 -0800 Message-ID: <1583355002.18705.2157.camel@hbabu-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-03-04_08:2020-03-04, 2020-03-04 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 bulkscore=0 suspectscore=1 clxscore=1015 malwarescore=0 priorityscore=1501 phishscore=0 impostorscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003040134 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mikey@neuling.org, herbert@gondor.apana.org.au, npiggin@gmail.com, hch@infradead.org, oohall@gmail.com, sukadev@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Dump FIFO entries if could not find send window and print CRB for debugging. Signed-off-by: Sukadev Bhattiprolu Signed-off-by: Haren Myneni --- arch/powerpc/platforms/powernv/vas-fault.c | 41 ++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/arch/powerpc/platforms/powernv/vas-fault.c b/arch/powerpc/platforms/powernv/vas-fault.c index c79fdbd..3ab0831 100644 --- a/arch/powerpc/platforms/powernv/vas-fault.c +++ b/arch/powerpc/platforms/powernv/vas-fault.c @@ -26,6 +26,28 @@ */ #define VAS_FAULT_WIN_FIFO_SIZE (4 << 20) +static void dump_crb(struct coprocessor_request_block *crb) +{ + struct data_descriptor_entry *dde; + struct nx_fault_stamp *nx; + + dde = &crb->source; + pr_devel("SrcDDE: addr 0x%llx, len %d, count %d, idx %d, flags %d\n", + be64_to_cpu(dde->address), be32_to_cpu(dde->length), + dde->count, dde->index, dde->flags); + + dde = &crb->target; + pr_devel("TgtDDE: addr 0x%llx, len %d, count %d, idx %d, flags %d\n", + be64_to_cpu(dde->address), be32_to_cpu(dde->length), + dde->count, dde->index, dde->flags); + + nx = &crb->stamp.nx; + pr_devel("NX Stamp: PSWID 0x%x, FSA 0x%llx, flags 0x%x, FS 0x%x\n", + be32_to_cpu(nx->pswid), + be64_to_cpu(crb->stamp.nx.fault_storage_addr), + nx->flags, be32_to_cpu(nx->fault_status)); +} + /* * Update the CSB to indicate a translation error. * @@ -138,6 +160,23 @@ static void update_csb(struct vas_window *window, pid_vnr(pid), rc); } +static void dump_fifo(struct vas_instance *vinst, void *entry) +{ + int i; + unsigned long *fifo = entry; + unsigned long *end = vinst->fault_fifo + vinst->fault_fifo_size; + + pr_err("Fault fifo size %d, Max crbs %d\n", vinst->fault_fifo_size, + vinst->fault_fifo_size / CRB_SIZE); + + /* Dump 10 CRB entries or until end of FIFO */ + pr_err("Fault FIFO Dump:\n"); + for (i = 0; i < 10*(CRB_SIZE/8) && fifo < end; i += 4, fifo += 4) { + pr_err("[%.3d, %p]: 0x%.16lx 0x%.16lx 0x%.16lx 0x%.16lx\n", + i, fifo, *fifo, *(fifo+1), *(fifo+2), *(fifo+3)); + } +} + /* * Process valid CRBs in fault FIFO. */ @@ -204,6 +243,7 @@ irqreturn_t vas_fault_thread_fn(int irq, void *data) vinst->vas_id, vinst->fault_fifo, fifo, vinst->fault_crbs); + dump_crb(crb); window = vas_pswid_to_window(vinst, be32_to_cpu(crb->stamp.nx.pswid)); @@ -214,6 +254,7 @@ irqreturn_t vas_fault_thread_fn(int irq, void *data) * even clean it up (return credit). * But we should not get here. */ + dump_fifo(vinst, (void *)entry); pr_err("VAS[%d] fault_fifo %p, fifo %p, pswid 0x%x, fault_crbs %d bad CRB?\n", vinst->vas_id, vinst->fault_fifo, fifo, be32_to_cpu(crb->stamp.nx.pswid), -- 1.8.3.1