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amdkfd: Implement the Set Memory Policy IOCTL 

Signed-off-by: Andrew Lewycky <Andrew.Lewycky@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
This commit is contained in:
Andrew Lewycky 2014-07-17 01:46:17 +03:00 committed by Oded Gabbay
parent 39b027d957
commit 41a286fa54
1 changed files with 51 additions and 1 deletions
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52
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
View File

@ -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,