From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oded Gabbay 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> References: <1411591537-31636-1-git-send-email-oded.gabbay@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2on0133.outbound.protection.outlook.com [65.55.169.133]) by gabe.freedesktop.org (Postfix) with ESMTP id D85626E6AD for ; Wed, 24 Sep 2014 14:05:58 -0700 (PDT) In-Reply-To: <1411591537-31636-1-git-send-email-oded.gabbay@amd.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: David Airlie , Alex Deucher , Jerome Glisse Cc: Andrew Lewycky , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Evgeny Pinchuk , =?UTF-8?q?Christian=20K=C3=B6nig?= List-Id: dri-devel@lists.freedesktop.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