amdkfd: Implement the Get Process Aperture IOCTL

v3: Fixed debug messages

Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 473f8e1..3130265 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -435,7 +435,61 @@ static long kfd_ioctl_get_clock_counters(struct file *filep,
 static int kfd_ioctl_get_process_apertures(struct file *filp,
                                struct kfd_process *p, void __user *arg)
 {
-       return -ENODEV;
+       struct kfd_ioctl_get_process_apertures_args args;
+       struct kfd_process_device_apertures *pAperture;
+       struct kfd_process_device *pdd;
+
+       dev_dbg(kfd_device, "get apertures for PASID %d", p->pasid);
+
+       if (copy_from_user(&args, arg, sizeof(args)))
+               return -EFAULT;
+
+       args.num_of_nodes = 0;
+
+       mutex_lock(&p->mutex);
+
+       /*if the process-device list isn't empty*/
+       if (kfd_has_process_device_data(p)) {
+               /* Run over all pdd of the process */
+               pdd = kfd_get_first_process_device_data(p);
+               do {
+                       pAperture = &args.process_apertures[args.num_of_nodes];
+                       pAperture->gpu_id = pdd->dev->id;
+                       pAperture->lds_base = pdd->lds_base;
+                       pAperture->lds_limit = pdd->lds_limit;
+                       pAperture->gpuvm_base = pdd->gpuvm_base;
+                       pAperture->gpuvm_limit = pdd->gpuvm_limit;
+                       pAperture->scratch_base = pdd->scratch_base;
+                       pAperture->scratch_limit = pdd->scratch_limit;
+
+                       dev_dbg(kfd_device,
+                               "node id %u\n", args.num_of_nodes);
+                       dev_dbg(kfd_device,
+                               "gpu id %u\n", pdd->dev->id);
+                       dev_dbg(kfd_device,
+                               "lds_base %llX\n", pdd->lds_base);
+                       dev_dbg(kfd_device,
+                               "lds_limit %llX\n", pdd->lds_limit);
+                       dev_dbg(kfd_device,
+                               "gpuvm_base %llX\n", pdd->gpuvm_base);
+                       dev_dbg(kfd_device,
+                               "gpuvm_limit %llX\n", pdd->gpuvm_limit);
+                       dev_dbg(kfd_device,
+                               "scratch_base %llX\n", pdd->scratch_base);
+                       dev_dbg(kfd_device,
+                               "scratch_limit %llX\n", pdd->scratch_limit);
+
+                       args.num_of_nodes++;
+               } while ((pdd = kfd_get_next_process_device_data(p, pdd)) != NULL &&
+                               (args.num_of_nodes < NUM_OF_SUPPORTED_GPUS));
+       }
+
+       mutex_unlock(&p->mutex);
+
+       if (copy_to_user(arg, &args, sizeof(args)))
+               return -EFAULT;
+
+       return 0;
 }
 
 static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 2bc34aa..41e608d 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -473,6 +473,12 @@ struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev,
                                                        struct kfd_process *p,
                                                        int create_pdd);
 
+/* Process device data iterator */
+struct kfd_process_device *kfd_get_first_process_device_data(struct kfd_process *p);
+struct kfd_process_device *kfd_get_next_process_device_data(struct kfd_process *p,
+                                               struct kfd_process_device *pdd);
+bool kfd_has_process_device_data(struct kfd_process *p);
+
 /* PASIDs */
 int kfd_pasid_init(void);
 void kfd_pasid_exit(void);