From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756097AbaHEPeW (ORCPT ); Tue, 5 Aug 2014 11:34:22 -0400 Received: from mail-bn1lp0140.outbound.protection.outlook.com ([207.46.163.140]:17744 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755949AbaHEPdX (ORCPT ); Tue, 5 Aug 2014 11:33:23 -0400 X-WSS-ID: 0N9UB7H-07-3J9-02 X-M-MSG: From: Oded Gabbay To: , , "David Airlie" , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Alexander Deucher CC: Andrew Morton , , "Joerg Roedel" , , , , Evgeny Pinchuk , Oded Gabbay Subject: [PATCH v3 22/23] amdkfd: Implement the Get Clock Counters IOCTL Date: Tue, 5 Aug 2014 18:30:50 +0300 Message-ID: <1407252651-3539-23-git-send-email-oded.gabbay@amd.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1407252651-3539-1-git-send-email-oded.gabbay@amd.com> References: <1407252651-3539-1-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:165.204.84.221;CTRY:US;IPV:NLI;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(6009001)(428002)(199002)(189002)(62966002)(83072002)(76176999)(50986999)(74662001)(20776003)(92726001)(31966008)(85306004)(79102001)(104166001)(81542001)(87936001)(21056001)(19580395003)(88136002)(19580405001)(83322001)(80022001)(89996001)(76482001)(84676001)(85852003)(46102001)(64706001)(77982001)(92566001)(47776003)(74502001)(105586002)(33646002)(86362001)(77156001)(102836001)(77096002)(229853001)(95666004)(107046002)(106466001)(68736004)(99396002)(81342001)(87286001)(50226001)(44976005)(50466002)(4396001)(36756003)(48376002)(101416001)(97736001);DIR:OUT;SFP:;SCL:1;SRVR:BLUPR02MB036;H:atltwp01.amd.com;FPR:;MLV:sfv;PTR:InfoDomainNonexistent;MX:1;LANG:en; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-Forefront-PRVS: 02945962BD Authentication-Results: spf=none (sender IP is 165.204.84.221) smtp.mailfrom=Oded.Gabbay@amd.com; 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 cc7ac28..eba5b5d 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c @@ -364,7 +364,34 @@ 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