From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753621AbaIXVE1 (ORCPT ); Wed, 24 Sep 2014 17:04:27 -0400 Received: from mail-bn1on0130.outbound.protection.outlook.com ([157.56.110.130]:44201 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753576AbaIXVET (ORCPT ); Wed, 24 Sep 2014 17:04:19 -0400 X-WSS-ID: 0NCFB7C-08-8M8-02 X-M-MSG: From: Oded Gabbay To: David Airlie , Alex Deucher , Jerome Glisse CC: , , "John Bridgman" , Andrew Lewycky , Joerg Roedel , Evgeny Pinchuk , Oded Gabbay , =?UTF-8?q?Christian=20K=C3=B6nig?= Subject: [PATCH v4 22/23] amdkfd: Implement the Get Clock Counters IOCTL Date: Wed, 24 Sep 2014 23:45:36 +0300 Message-ID: <1411591537-31636-23-git-send-email-oded.gabbay@amd.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1411591537-31636-1-git-send-email-oded.gabbay@amd.com> References: <1411591537-31636-1-git-send-email-oded.gabbay@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.20.0.84] X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:165.204.84.222;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(428002)(199003)(189002)(106466001)(90102001)(21056001)(105586002)(47776003)(76482002)(64706001)(101416001)(50986999)(4396001)(107046002)(229853001)(99396003)(87936001)(62966002)(92566001)(102836001)(50226001)(19580405001)(104166001)(20776003)(31966008)(74502003)(77982003)(92726001)(50466002)(89996001)(86362001)(36756003)(77156001)(80022003)(68736004)(79102003)(84676001)(81542003)(48376002)(85306004)(95666004)(33646002)(93916002)(85852003)(81342003)(87286001)(97736003)(44976005)(19580395003)(74662003)(88136002)(83322001)(76176999)(83072002)(120916001)(77096002)(10300001)(46102003);DIR:OUT;SFP:1102;SCL:1;SRVR:CO1PR02MB205;H:atltwp02.amd.com;FPR:;MLV:sfv;PTR:InfoDomainNonexistent;A:1;MX:1;LANG:en; X-Microsoft-Antispam: UriScan:;UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB205; X-Forefront-PRVS: 03449D5DD1 Authentication-Results: spf=none (sender IP is 165.204.84.222) smtp.mailfrom=Oded.Gabbay@amd.com; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB189; X-OriginatorOrg: amd4.onmicrosoft.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Evgeny Pinchuk Signed-off-by: Evgeny Pinchuk Signed-off-by: Oded Gabbay --- drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c index d1cc6d8..1e4b731 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c @@ -373,7 +373,34 @@ out: static long kfd_ioctl_get_clock_counters(struct file *filep, struct kfd_process *p, void __user *arg) { - return -ENODEV; + struct kfd_ioctl_get_clock_counters_args args; + struct kfd_dev *dev; + struct timespec time; + + if (copy_from_user(&args, arg, sizeof(args))) + return -EFAULT; + + dev = kfd_device_by_id(args.gpu_id); + if (dev == NULL) + return -EINVAL; + + /* Reading GPU clock counter from KGD */ + args.gpu_clock_counter = kfd2kgd->get_gpu_clock_counter(dev->kgd); + + /* No access to rdtsc. Using raw monotonic time */ + getrawmonotonic(&time); + args.cpu_clock_counter = (uint64_t)timespec_to_ns(&time); + + get_monotonic_boottime(&time); + args.system_clock_counter = (uint64_t)timespec_to_ns(&time); + + /* Since the counter is in nano-seconds we use 1GHz frequency */ + args.system_clock_freq = 1000000000; + + if (copy_to_user(arg, &args, sizeof(args))) + return -EFAULT; + + return 0; } -- 1.9.1