From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 3xm3Sm4mGKzDqjv for ; Mon, 4 Sep 2017 18:50:00 +1000 (AEST) Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v848mjFj089271 for ; Mon, 4 Sep 2017 04:49:57 -0400 Received: from e23smtp06.au.ibm.com (e23smtp06.au.ibm.com [202.81.31.148]) by mx0a-001b2d01.pphosted.com with ESMTP id 2cs2fgu9u5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 04 Sep 2017 04:49:57 -0400 Received: from localhost by e23smtp06.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 4 Sep 2017 18:49:54 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v848mbFK38666254 for ; Mon, 4 Sep 2017 18:48:37 +1000 Received: from d23av03.au.ibm.com (localhost [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v848mSNH031761 for ; Mon, 4 Sep 2017 18:48:29 +1000 From: Vaibhav Jain To: linuxppc-dev@lists.ozlabs.org, Frederic Barrat , Michael Ellerman Cc: Vaibhav Jain , Andrew Donnellan , Christophe Lombard , Philippe Bergheaud , "Alastair D'Silva" Subject: [PATCH v2] cxl: Set the valid bit in PE for dedicated mode Date: Mon, 4 Sep 2017 14:18:25 +0530 Message-Id: <20170904084825.22172-1-vaibhav@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Make sure to set the valid-bit in software-state field of the populated PE. This was earlier missing for dedicated mode AFUs, hence was causing a PSL freeze when the AFU was activated. Signed-off-by: Vaibhav Jain --- Changelog: v2 -> Removed a call to smp_wmb() after setting the bit [Michael Ellerman] --- drivers/misc/cxl/native.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index 4a82c313cf71..75df74d59527 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -897,6 +897,14 @@ int cxl_attach_dedicated_process_psl9(struct cxl_context *ctx, u64 wed, u64 amr) if (ctx->afu->adapter->native->sl_ops->update_dedicated_ivtes) afu->adapter->native->sl_ops->update_dedicated_ivtes(ctx); + ctx->elem->software_state = cpu_to_be32(CXL_PE_SOFTWARE_STATE_V); + /* + * Ideally we should do a wmb() here to make sure the changes to the + * PE are visible to the card before we call afu_enable. + * On ppc64 though all mmios are preceded by a 'sync' instruction hence + * we dont dont need one here. + */ + result = cxl_ops->afu_reset(afu); if (result) return result; -- 2.13.5