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Commit 41a286fa authored by Andrew Lewycky's avatar Andrew Lewycky Committed by Oded Gabbay
Browse files

amdkfd: Implement the Set Memory Policy IOCTL 



Signed-off-by: default avatarAndrew Lewycky <Andrew.Lewycky@amd.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@amd.com>
parent 39b027d9

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

+51 −1
Original line number Diff line number Diff line
@@ -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 *);
@@ -345,7 +346,56 @@ static int kfd_ioctl_update_queue(struct file *filp, struct kfd_process *p, 
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,