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Subject[PATCH v5 23/24] amdkfd: Implement the Get Process Aperture IOCTL
Date
From: Alexey Skidanov <Alexey.Skidanov@amd.com>

v3: Fixed debug messages

Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 56 +++++++++++++++++++++++++++++++-
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 6 ++++
2 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 473f8e1..3130265 100644
--- 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 2bc34aa1..41e608d 100644
--- 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);
--
2.1.0


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