[PATCH v3 07/23] amdkfd: Add IOCTL set definitions of amdkfd

[Oded Gabbay]

- KFD_IOC_GET_VERSION:
	Retrieves the interface version of amdkfd

- KFD_IOC_CREATE_QUEUE:
	Creates a usermode queue that runs on a specific GPU device

- KFD_IOC_DESTROY_QUEUE:
	Destroys an existing usermode queue

- KFD_IOC_SET_MEMORY_POLICY:
	Sets the memory policy of the default and alternate aperture of the
        calling process

- KFD_IOC_GET_CLOCK_COUNTERS:
	Retrieves counters (timestamps) of CPU and GPU

- KFD_IOC_GET_PROCESS_APERTURES:
	Retrieves information about process apertures that were initialized
        during the open() call of the amdkfd device

- KFD_IOC_UPDATE_QUEUE:
	Updates configuration of an existing usermode queue

(v3) remove pragma pack

(v3) remove pmc ioctls

(v3) add parameter for doorbell offset

(v3) add comment on counters

Signed-off-by: Oded Gabbay <oded.gabbay at amd.com>
---
 include/uapi/linux/kfd_ioctl.h | 123 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 include/uapi/linux/kfd_ioctl.h

diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
new file mode 100644
index 0000000..a06e021
--- /dev/null
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2014 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef KFD_IOCTL_H_INCLUDED
+#define KFD_IOCTL_H_INCLUDED
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define KFD_IOCTL_CURRENT_VERSION 1
+
+struct kfd_ioctl_get_version_args {
+	uint32_t min_supported_version;	/* from KFD */
+	uint32_t max_supported_version;	/* from KFD */
+};
+
+/* For kfd_ioctl_create_queue_args.queue_type. */
+#define KFD_IOC_QUEUE_TYPE_COMPUTE   0
+#define KFD_IOC_QUEUE_TYPE_SDMA      1
+
+struct kfd_ioctl_create_queue_args {
+	uint64_t ring_base_address;	/* to KFD */
+	uint64_t write_pointer_address;	/* from KFD */
+	uint64_t read_pointer_address;	/* from KFD */
+	uint64_t doorbell_offset;	/* from KFD */
+
+	uint32_t ring_size;		/* to KFD */
+	uint32_t gpu_id;		/* to KFD */
+	uint32_t queue_type;		/* to KFD */
+	uint32_t queue_percentage;	/* to KFD */
+	uint32_t queue_priority;	/* to KFD */
+	uint32_t queue_id;		/* from KFD */
+};
+
+struct kfd_ioctl_destroy_queue_args {
+	uint32_t queue_id;		/* to KFD */
+};
+
+struct kfd_ioctl_update_queue_args {
+	uint64_t ring_base_address;	/* to KFD */
+
+	uint32_t queue_id;		/* to KFD */
+	uint32_t ring_size;		/* to KFD */
+	uint32_t queue_percentage;	/* to KFD */
+	uint32_t queue_priority;	/* to KFD */
+};
+
+/* For kfd_ioctl_set_memory_policy_args.default_policy and alternate_policy */
+#define KFD_IOC_CACHE_POLICY_COHERENT 0
+#define KFD_IOC_CACHE_POLICY_NONCOHERENT 1
+
+struct kfd_ioctl_set_memory_policy_args {
+	uint64_t alternate_aperture_base;	/* to KFD */
+	uint64_t alternate_aperture_size;	/* to KFD */
+
+	uint32_t gpu_id;			/* to KFD */
+	uint32_t default_policy;		/* to KFD */
+	uint32_t alternate_policy;		/* to KFD */
+};
+
+/*
+ * All counters are monotonic. They are used for profiling of compute jobs.
+ * The profiling is done by userspace.
+ *
+ * In case of GPU reset, the counter should not be affected.
+ */
+
+struct kfd_ioctl_get_clock_counters_args {
+	uint64_t gpu_clock_counter;	/* from KFD */
+	uint64_t cpu_clock_counter;	/* from KFD */
+	uint64_t system_clock_counter;	/* from KFD */
+	uint64_t system_clock_freq;	/* from KFD */
+
+	uint32_t gpu_id;		/* to KFD */
+};
+
+#define NUM_OF_SUPPORTED_GPUS 7
+
+struct kfd_process_device_apertures {
+	uint64_t lds_base;		/* from KFD */
+	uint64_t lds_limit;		/* from KFD */
+	uint64_t scratch_base;		/* from KFD */
+	uint64_t scratch_limit;		/* from KFD */
+	uint64_t gpuvm_base;		/* from KFD */
+	uint64_t gpuvm_limit;		/* from KFD */
+	uint32_t gpu_id;		/* from KFD */
+};
+
+struct kfd_ioctl_get_process_apertures_args {
+	struct kfd_process_device_apertures process_apertures[NUM_OF_SUPPORTED_GPUS];/* from KFD */
+	uint8_t num_of_nodes; /* from KFD, should be in the range [1 - NUM_OF_SUPPORTED_GPUS]*/
+};
+
+#define KFD_IOC_MAGIC 'K'
+
+#define KFD_IOC_GET_VERSION		_IOR(KFD_IOC_MAGIC, 1, struct kfd_ioctl_get_version_args)
+#define KFD_IOC_CREATE_QUEUE		_IOWR(KFD_IOC_MAGIC, 2, struct kfd_ioctl_create_queue_args)
+#define KFD_IOC_DESTROY_QUEUE		_IOWR(KFD_IOC_MAGIC, 3, struct kfd_ioctl_destroy_queue_args)
+#define KFD_IOC_SET_MEMORY_POLICY	_IOW(KFD_IOC_MAGIC, 4, struct kfd_ioctl_set_memory_policy_args)
+#define KFD_IOC_GET_CLOCK_COUNTERS	_IOWR(KFD_IOC_MAGIC, 5, struct kfd_ioctl_get_clock_counters_args)
+#define KFD_IOC_GET_PROCESS_APERTURES	_IOR(KFD_IOC_MAGIC, 6, struct kfd_ioctl_get_process_apertures_args)
+#define KFD_IOC_UPDATE_QUEUE		_IOW(KFD_IOC_MAGIC, 7, struct kfd_ioctl_update_queue_args)
+
+#endif
-- 
1.9.1