From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 3xxqST62BgzDqR8 for ; Wed, 20 Sep 2017 16:23:37 +1000 (AEST) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v8K6NLoU126842 for ; Wed, 20 Sep 2017 02:23:35 -0400 Received: from e23smtp05.au.ibm.com (e23smtp05.au.ibm.com [202.81.31.147]) by mx0a-001b2d01.pphosted.com with ESMTP id 2d3jqy0vje-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 20 Sep 2017 02:23:35 -0400 Received: from localhost by e23smtp05.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 20 Sep 2017 16:23:33 +1000 Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay07.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v8K6NVFA34275468 for ; Wed, 20 Sep 2017 16:23:31 +1000 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v8K6NXAf023732 for ; Wed, 20 Sep 2017 16:23:33 +1000 From: Vaibhav Jain To: linuxppc-dev@lists.ozlabs.org, Frederic Barrat , Christophe Lombard Cc: Vaibhav Jain , Andrew Donnellan , Philippe Bergheaud , "Alastair D'Silva" Subject: [PATCH] cxl: Provide debugfs access to PSL_DEBUG/XSL_DEBUG registers Date: Wed, 20 Sep 2017 11:53:22 +0530 Message-Id: <20170920062322.6582-1-vaibhav@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Access to PSL/XSL_DEBUG registers on the adapter provides easy access to the debug facilities provided by PSL/XSL. So this patch adds two new files (debug, xsl-debug) to the cxl-adapter specific debugfs folder located at /sys/kernel/debugfs/cxl/card, which will provide direct r/w access to corrosponding debug registers in the adapter config-space. Signed-off-by: Vaibhav Jain --- drivers/misc/cxl/cxl.h | 1 + drivers/misc/cxl/debugfs.c | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index b1afeccbb97f..2c10b536427a 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -100,6 +100,7 @@ static const cxl_p1_reg_t CXL_XSL_FEC = {0x0158}; static const cxl_p1_reg_t CXL_XSL_DSNCTL = {0x0168}; /* PSL registers - CAIA 2 */ static const cxl_p1_reg_t CXL_PSL9_CONTROL = {0x0020}; +static const cxl_p1_reg_t CXL_XSL9_DBG = {0x0130}; static const cxl_p1_reg_t CXL_XSL9_DSNCTL = {0x0168}; static const cxl_p1_reg_t CXL_PSL9_FIR1 = {0x0300}; static const cxl_p1_reg_t CXL_PSL9_FIR2 = {0x0308}; diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c index eae9d749f967..10ff569c1272 100644 --- a/drivers/misc/cxl/debugfs.c +++ b/drivers/misc/cxl/debugfs.c @@ -65,6 +65,10 @@ void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir) debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR2)); debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL)); debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG)); + debugfs_create_io_x64("debug", 0600, dir, + _cxl_p1_addr(adapter, CXL_PSL9_DEBUG)); + debugfs_create_io_x64("xsl-debug", 0600, dir, + _cxl_p1_addr(adapter, CXL_XSL9_DBG)); } void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir) -- 2.13.5