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Wed, 27 Nov 2019 01:13:41 +0000 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xAR1De2Y47907078 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 27 Nov 2019 01:13:40 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 512CF112062; Wed, 27 Nov 2019 01:13:40 +0000 (GMT) Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 95F88112061; Wed, 27 Nov 2019 01:13:39 +0000 (GMT) Received: from [9.70.82.143] (unknown [9.70.82.143]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 27 Nov 2019 01:13:39 +0000 (GMT) Subject: [PATCH 10/14] powerpc/vas: Print CRB and FIFO values From: Haren Myneni To: linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, mpe@ellerman.id.au, npiggin@gmail.com, mikey@neuling.org, herbert@gondor.apana.org.au Content-Type: text/plain; charset="UTF-8" Date: Tue, 26 Nov 2019 17:12:21 -0800 Message-ID: <1574817141.13250.18.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=2.50.10434:6.0.95,18.0.572 definitions=2019-11-26_08:2019-11-26,2019-11-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 mlxlogscore=847 suspectscore=0 lowpriorityscore=0 clxscore=1015 mlxscore=0 spamscore=0 malwarescore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911270008 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: sukadev@linux.vnet.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Dump FIFO values 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 | 40 ++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/arch/powerpc/platforms/powernv/vas-fault.c b/arch/powerpc/platforms/powernv/vas-fault.c index dd27649..ad594c8 100644 --- a/arch/powerpc/platforms/powernv/vas-fault.c +++ b/arch/powerpc/platforms/powernv/vas-fault.c @@ -36,6 +36,27 @@ void vas_wakeup_fault_handler(int virq, void *arg) wake_up(&vinst->fault_wq); } +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), crb_nx_fault_addr(crb), + nx->flags, be32_to_cpu(nx->fault_status)); +} + static void notify_process(pid_t pid, u64 fault_addr) { int rc; @@ -154,6 +175,23 @@ static void update_csb(struct vas_window *window, } } +static void dump_fifo(struct vas_instance *vinst) +{ + int i; + unsigned long *fifo = vinst->fault_fifo; + + pr_err("Fault fifo size %d, max crbs %d, crb size %lu\n", + vinst->fault_fifo_size, + vinst->fault_fifo_size / CRB_SIZE, + sizeof(struct coprocessor_request_block)); + + pr_err("Fault FIFO Dump:\n"); + for (i = 0; i < 64; 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 CRBs that we receive on the fault window. */ @@ -211,6 +249,7 @@ static void process_fault_crbs(struct vas_instance *vinst) vinst->fault_crbs, atomic_read(&vinst->pending_fault)); + dump_crb(crb); window = vas_pswid_to_window(vinst, crb_nx_pswid(crb)); if (IS_ERR(window)) { @@ -220,6 +259,7 @@ static void process_fault_crbs(struct vas_instance *vinst) * even clean it up (return credit). * But we should not get here. */ + dump_fifo(vinst); pr_err("VAS[%d] fault_fifo %p, fifo %p, pswid 0x%x, fault_crbs %d, pending %d bad CRB?\n", vinst->vas_id, vinst->fault_fifo, fifo, crb_nx_pswid(crb), vinst->fault_crbs, -- 1.8.3.1