Re: [PATCH v2 21/25] amdkfd: Implement the create/destroy/update queue IOCTLs
From: Oded Gabbay
Date: Sun Jul 27 2014 - 06:16:08 EST
On 21/07/14 02:09, Jerome Glisse wrote:
On Thu, Jul 17, 2014 at 04:29:28PM +0300, Oded Gabbay wrote:
From: Ben Goz <ben.goz@xxxxxxx>
Signed-off-by: Ben Goz <ben.goz@xxxxxxx>
Signed-off-by: Oded Gabbay <oded.gabbay@xxxxxxx>
---
drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c | 133 +++++++++++++++++++++++++++-
drivers/gpu/drm/radeon/amdkfd/kfd_priv.h | 8 ++
2 files changed, 138 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c
index d6580a6..a74693a 100644
--- a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c
@@ -119,17 +119,144 @@ static int kfd_open(struct inode *inode, struct file *filep)
static long kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, void __user *arg)
{
- return -ENODEV;
+ struct kfd_ioctl_create_queue_args args;
+ struct kfd_dev *dev;
+ int err = 0;
+ unsigned int queue_id;
+ struct kfd_process_device *pdd;
+ struct queue_properties q_properties;
+
+ memset(&q_properties, 0, sizeof(struct queue_properties));
+
+ if (copy_from_user(&args, arg, sizeof(args)))
+ return -EFAULT;
+
+ if (!access_ok(VERIFY_WRITE, args.read_pointer_address, sizeof(qptr_t))) {
+ pr_err("kfd: can't access read pointer");
+ return -EFAULT;
+ }
+
+ if (!access_ok(VERIFY_WRITE, args.write_pointer_address, sizeof(qptr_t))) {
+ pr_err("kfd: can't access write pointer");
+ return -EFAULT;
+ }
+
+ q_properties.is_interop = false;
+ q_properties.queue_percent = args.queue_percentage;
+ q_properties.priority = args.queue_priority;
+ q_properties.queue_address = args.ring_base_address;
+ q_properties.queue_size = args.ring_size;
+ q_properties.read_ptr = (qptr_t *) args.read_pointer_address;
+ q_properties.write_ptr = (qptr_t *) args.write_pointer_address;
+
So there is still no sanity check on any of the argument especialy the queue_size.
I might have missed it, if so i think it really should be here inside the ioctl
function as is simpler to find.
Fixed in v3.
+
+ pr_debug("%s Arguments: Queue Percentage (%d, %d)\n"
+ "Queue Priority (%d, %d)\n"
+ "Queue Address (0x%llX, 0x%llX)\n"
+ "Queue Size (0x%llX, %u)\n"
+ "Queue r/w Pointers (0x%llX, 0x%llX)\n",
+ __func__,
+ q_properties.queue_percent, args.queue_percentage,
+ q_properties.priority, args.queue_priority,
+ q_properties.queue_address, args.ring_base_address,
+ q_properties.queue_size, args.ring_size,
+ (uint64_t) q_properties.read_ptr,
+ (uint64_t) q_properties.write_ptr);
One pr_debug call perline.
Fixed in v3.
+
+ 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 err_bind_process;
+ }
+
+ pr_debug("kfd: creating queue for PASID %d on GPU 0x%x\n",
+ p->pasid,
+ dev->id);
+
+ err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, 0, KFD_QUEUE_TYPE_COMPUTE, &queue_id);
+ if (err != 0)
+ goto err_create_queue;
+
+ args.queue_id = queue_id;
+ args.doorbell_address = (uint64_t)q_properties.doorbell_ptr;
+
+ if (copy_to_user(arg, &args, sizeof(args))) {
+ err = -EFAULT;
+ goto err_copy_args_out;
+ }
+
+ mutex_unlock(&p->mutex);
+
+ pr_debug("kfd: queue id %d was created successfully.\n"
+ " ring buffer address == 0x%016llX\n"
+ " read ptr address == 0x%016llX\n"
+ " write ptr address == 0x%016llX\n"
+ " doorbell address == 0x%016llX\n",
+ args.queue_id,
+ args.ring_base_address,
+ args.read_pointer_address,
+ args.write_pointer_address,
+ args.doorbell_address);
+
Ditto
Fixed in v3.
+ return 0;
+
+err_copy_args_out:
+ pqm_destroy_queue(&p->pqm, queue_id);
+err_create_queue:
+err_bind_process:
+ mutex_unlock(&p->mutex);
+ return err;
}
static int kfd_ioctl_destroy_queue(struct file *filp, struct kfd_process *p, void __user *arg)
{
- return -ENODEV;
+ int retval;
+ struct kfd_ioctl_destroy_queue_args args;
+
+ if (copy_from_user(&args, arg, sizeof(args)))
+ return -EFAULT;
+
+ pr_debug("kfd: destroying queue id %d for PASID %d\n",
+ args.queue_id,
+ p->pasid);
+
+ mutex_lock(&p->mutex);
+
+ retval = pqm_destroy_queue(&p->pqm, args.queue_id);
+
+ mutex_unlock(&p->mutex);
+ return retval;
}
static int kfd_ioctl_update_queue(struct file *filp, struct kfd_process *p, void __user *arg)
{
- return -ENODEV;
+ int retval;
+ struct kfd_ioctl_update_queue_args args;
+ struct queue_properties properties;
+
+ if (copy_from_user(&args, arg, sizeof(args)))
+ return -EFAULT;
+
+ properties.queue_address = args.ring_base_address;
+ properties.queue_size = args.ring_size;
+ properties.queue_percent = args.queue_percentage;
+ properties.priority = args.queue_priority;
+
Would need sanity check on argument.
fixed in v3.
Oded
+ pr_debug("kfd: updating queue id %d for PASID %d\n", args.queue_id, p->pasid);
+
+ mutex_lock(&p->mutex);
+
+ retval = pqm_update_queue(&p->pqm, args.queue_id, &properties);
+
+ mutex_unlock(&p->mutex);
+
+ return retval;
}
static long kfd_ioctl_set_memory_policy(struct file *filep, struct kfd_process *p, void __user *arg)
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
index 8a1de68..7ea0e81 100644
--- a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
@@ -418,7 +418,15 @@ struct process_queue_node {
int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p);
void pqm_uninit(struct process_queue_manager *pqm);
+int pqm_create_queue(struct process_queue_manager *pqm,
+ struct kfd_dev *dev,
+ struct file *f,
+ struct queue_properties *properties,
+ unsigned int flags,
+ enum kfd_queue_type type,
+ unsigned int *qid);
int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid);
+int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid, struct queue_properties *p);
/* Packet Manager */
--
1.9.1
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