From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oded Gabbay Subject: [PATCH v4 21/23] amdkfd: Implement the Set Memory Policy IOCTL Date: Wed, 24 Sep 2014 23:45:35 +0300 Message-ID: <1411591537-31636-22-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-bn1-obe.outbound.protection.outlook.com (mail-bn1on0131.outbound.protection.outlook.com [157.56.110.131]) by gabe.freedesktop.org (Postfix) with ESMTP id 73DB16E6AE for ; Wed, 24 Sep 2014 14:05:06 -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, =?UTF-8?q?Christian=20K=C3=B6nig?= 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 ac3146d..d1cc6d8 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 *); @@ -319,7 +320,55 @@ 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