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Date: Thu, 17 Jul 2014 16:29:29 +0300 From: Oded Gabbay <oded.gabbay@....com> To: David Airlie <airlied@...ux.ie>, Jerome Glisse <j.glisse@...il.com>, "Alex Deucher" <alexdeucher@...il.com>, Andrew Morton <akpm@...ux-foundation.org> CC: John Bridgman <John.Bridgman@....com>, Joerg Roedel <joro@...tes.org>, Andrew Lewycky <Andrew.Lewycky@....com>, Christian König <deathsimple@...afone.de>, Michel Dänzer <michel.daenzer@....com>, Ben Goz <Ben.Goz@....com>, Alexey Skidanov <Alexey.Skidanov@....com>, Evgeny Pinchuk <Evgeny.Pinchuk@....com>, "Oded Gabbay" <oded.gabbay@....com>, Alex Deucher <alexander.deucher@....com>, Christian König <christian.koenig@....com>, <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org> Subject: [PATCH v2 22/25] amdkfd: Implement the Set Memory Policy IOCTL From: Andrew Lewycky <Andrew.Lewycky@....com> Signed-off-by: Andrew Lewycky <Andrew.Lewycky@....com> Signed-off-by: Oded Gabbay <oded.gabbay@....com> --- 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 a74693a..085bd91 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c @@ -35,6 +35,7 @@ #include <uapi/asm-generic/mman-common.h> #include <asm/processor.h> #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 *); @@ -261,7 +262,55 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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