From patchwork Sat Oct 19 05:58:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haren Myneni X-Patchwork-Id: 1179741 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 46wC9v3lwjz9sNw for ; Sat, 19 Oct 2019 17:07:47 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46wC9t6KXpzDqCY for ; Sat, 19 Oct 2019 17:07:46 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=linux.vnet.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=haren@linux.vnet.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46wBzR6xVnzDqQc for ; Sat, 19 Oct 2019 16:58:43 +1100 (AEDT) Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x9J5HjX4151970; Sat, 19 Oct 2019 01:58:38 -0400 Received: from ppma04dal.us.ibm.com (7a.29.35a9.ip4.static.sl-reverse.com [169.53.41.122]) by mx0b-001b2d01.pphosted.com with ESMTP id 2vqv3t0sj9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 19 Oct 2019 01:58:38 -0400 Received: from pps.filterd (ppma04dal.us.ibm.com [127.0.0.1]) by ppma04dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x9J5JRPa031265; Sat, 19 Oct 2019 05:58:37 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma04dal.us.ibm.com with ESMTP id 2vqt4616kx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 19 Oct 2019 05:58:37 +0000 Received: from b03ledav006.gho.boulder.ibm.com (b03ledav006.gho.boulder.ibm.com [9.17.130.237]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x9J5wais29425968 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 19 Oct 2019 05:58:36 GMT Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 38D2DC6055; Sat, 19 Oct 2019 05:58:36 +0000 (GMT) Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ED8D8C6057; Sat, 19 Oct 2019 05:58:35 +0000 (GMT) Received: from [9.70.82.143] (unknown [9.70.82.143]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP; Sat, 19 Oct 2019 05:58:35 +0000 (GMT) Subject: [RFC PATCH 08/13] powerpc/vas: Print CRB and FIFO values From: Haren Myneni To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au Date: Fri, 18 Oct 2019 22:58:21 -0700 Message-ID: <1571464701.24387.34.camel@hbabu-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-10-19_01:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=795 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910190051 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+patchwork-incoming=ozlabs.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 7aacce9..1ce85b5 100644 --- a/arch/powerpc/platforms/powernv/vas-fault.c +++ b/arch/powerpc/platforms/powernv/vas-fault.c @@ -39,6 +39,27 @@ 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)); +} + /* * Check if the fault occurred in the CSB itself. Return true if so, false */ @@ -153,6 +174,23 @@ static void update_csb(int pid, struct coprocessor_request_block *crb) notify_process(pid, crb_nx_fault_addr(crb)); } +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. */ @@ -210,6 +248,7 @@ static void process_fault_crbs(struct vas_instance *vinst) vinst->fault_fifo, fifo, 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)) { @@ -219,6 +258,7 @@ 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,