From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oded Gabbay Subject: [PATCH v3 21/23] amdkfd: Implement the Set Memory Policy IOCTL Date: Tue, 5 Aug 2014 18:30:49 +0300 Message-ID: <1407252651-3539-22-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; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from na01-bn1-obe.outbound.protection.outlook.com (mail-bn1blp0186.outbound.protection.outlook.com [207.46.163.186]) by gabe.freedesktop.org (Postfix) with ESMTP id BA0006E4DB for ; Tue, 5 Aug 2014 08:33:30 -0700 (PDT) In-Reply-To: <1407252651-3539-1-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: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Alexander Deucher Cc: Andrew.Lewycky@amd.com, michel.daenzer@amd.com, Andrew Morton List-Id: dri-devel@lists.freedesktop.org From: Andrew Lewycky Signed-off-by: Andrew Lewycky Signed-off-by: Oded Gabbay --- drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c | 51 ++++++++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c index 17725f6..cc7ac28 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c @@ -35,6 +35,7 @@ #include #include #include "kfd_priv.h" +#include "kfd_device_queue_manager.h" static long kfd_ioctl(struct file *, unsigned int, unsigned long); static int kfd_open(struct inode *, struct file *); @@ -310,7 +311,55 @@ static int kfd_ioctl_update_queue(struct file *filp, struct kfd_process *p, void static long kfd_ioctl_set_memory_policy(struct file *filep, struct kfd_process *p, void __user *arg) { - return -ENODEV; + struct kfd_ioctl_set_memory_policy_args args; + struct kfd_dev *dev; + int err = 0; + struct kfd_process_device *pdd; + enum cache_policy default_policy, alternate_policy; + + if (copy_from_user(&args, arg, sizeof(args))) + return -EFAULT; + + if (args.default_policy != KFD_IOC_CACHE_POLICY_COHERENT + && args.default_policy != KFD_IOC_CACHE_POLICY_NONCOHERENT) { + return -EINVAL; + } + + if (args.alternate_policy != KFD_IOC_CACHE_POLICY_COHERENT + && args.alternate_policy != KFD_IOC_CACHE_POLICY_NONCOHERENT) { + return -EINVAL; + } + + dev = kfd_device_by_id(args.gpu_id); + if (dev == NULL) + return -EINVAL; + + mutex_lock(&p->mutex); + + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd) < 0) { + err = PTR_ERR(pdd); + goto out; + } + + default_policy = (args.default_policy == KFD_IOC_CACHE_POLICY_COHERENT) + ? cache_policy_coherent : cache_policy_noncoherent; + + alternate_policy = (args.alternate_policy == KFD_IOC_CACHE_POLICY_COHERENT) + ? cache_policy_coherent : cache_policy_noncoherent; + + if (!dev->dqm->set_cache_memory_policy(dev->dqm, + &pdd->qpd, + default_policy, + alternate_policy, + (void __user *)args.alternate_aperture_base, + args.alternate_aperture_size)) + err = -EINVAL; + +out: + mutex_unlock(&p->mutex); + + return err; } static long kfd_ioctl_get_clock_counters(struct file *filep, struct kfd_process *p, void __user *arg) -- 1.9.1