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| author | Andrew Lewycky <Andrew.Lewycky@amd.com> | 2014-07-17 00:46:17 +0200 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@amd.com> | 2014-07-17 00:46:17 +0200 |
| commit | 41a286fa54e850add4482146c511b088354f6f2d (patch) | |
| tree | 93a5580926d0540022908f77e4f9ea2b09b8368d /drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | |
| parent | amdkfd: Implement the create/destroy/update queue IOCTLs (diff) | |
| download | linux-41a286fa54e850add4482146c511b088354f6f2d.tar.xz linux-41a286fa54e850add4482146c511b088354f6f2d.zip | |
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_chardev.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index d342035a8634..1020faf3d703 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/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 *); @@ -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, |