[PATCH v5 07/24] amdkfd: Add IOCTL set definitions of amdkfd

Oded Gabbay
2014-11-08T18:40:21Z

- 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 and pmc ioctls. Added parameter for doorbell offset and
a comment on counters

v5:

Add define for AQL queues.
Fix arguments of Get Version IOCTL
Make IOCTL's structures to be the same size on 32/64 bit

Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
---
include/uapi/linux/kfd_ioctl.h | 154 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 154 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..fa1bc6d
--- /dev/null
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -0,0 +1,154 @@
+/*
+ * 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_MAJOR_VERSION 1
+#define KFD_IOCTL_MINOR_VERSION 2
+
+struct kfd_ioctl_get_version_args {
+ uint32_t major_version; /* from KFD */
+ uint32_t minor_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
+#define KFD_IOC_QUEUE_TYPE_COMPUTE_AQL 2
+
+#define KFD_MAX_QUEUE_PERCENTAGE 100
+#define KFD_MAX_QUEUE_PRIORITY 15
+
+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 */
+
+ uint64_t eop_buffer_address; /* to KFD */
+ uint64_t eop_buffer_size; /* to KFD */
+ uint64_t ctx_save_restore_address; /* to KFD */
+ uint64_t ctx_save_restore_size; /* to KFD */
+};
+
+struct kfd_ioctl_destroy_queue_args {
+ uint32_t queue_id; /* to KFD */
+ uint32_t pad;
+};
+
+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 */
+ uint32_t pad;
+};
+
+/*
+ * 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 */
+ uint32_t pad;
+};
+
+#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 */
+ uint32_t pad;
+};
+
+struct kfd_ioctl_get_process_apertures_args {
+ struct kfd_process_device_apertures
+ process_apertures[NUM_OF_SUPPORTED_GPUS];/* from KFD */
+
+ /* from KFD, should be in the range [1 - NUM_OF_SUPPORTED_GPUS] */
+ uint32_t num_of_nodes;
+ uint32_t pad;
+};
+
+#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
--
2.1.0