drm/amdkfd: add events IOCTL set definitions

- AMDKFD_IOC_CREATE_EVENT:
	Creates a new event of a specified type

- AMDKFD_IOC_DESTROY_EVENT:
	Destroys an existing event

- AMDKFD_IOC_SET_EVENT:
	Signal an existing event

- AMDKFD_IOC_RESET_EVENT:
	Reset an existing event

- AMDKFD_IOC_WAIT_EVENTS:
	Wait on event(s) until they are signaled

v2:

- Move the limit of the signal events to kfd_ioctl.h so it
  can be used by userspace

v3:
- Change all bool fields in struct kfd_memory_exception_failure
to uint32_t

Signed-off-by: Andrew Lewycky <Andrew.Lewycky@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

1 files changed, 94 insertions, 2 deletions

diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index af94f31e33ac..4ca35a8f9891 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -27,7 +27,7 @@
 #include <linux/ioctl.h>
 
 #define KFD_IOCTL_MAJOR_VERSION 1
-#define KFD_IOCTL_MINOR_VERSION 0
+#define KFD_IOCTL_MINOR_VERSION 1
 
 struct kfd_ioctl_get_version_args {
         uint32_t major_version; /* from KFD */
@@ -128,6 +128,83 @@ struct kfd_ioctl_get_process_apertures_args {
         uint32_t pad;
 };
 
+/* Matching HSA_EVENTTYPE */
+#define KFD_IOC_EVENT_SIGNAL                    0
+#define KFD_IOC_EVENT_NODECHANGE                1
+#define KFD_IOC_EVENT_DEVICESTATECHANGE         2
+#define KFD_IOC_EVENT_HW_EXCEPTION              3
+#define KFD_IOC_EVENT_SYSTEM_EVENT              4
+#define KFD_IOC_EVENT_DEBUG_EVENT               5
+#define KFD_IOC_EVENT_PROFILE_EVENT             6
+#define KFD_IOC_EVENT_QUEUE_EVENT               7
+#define KFD_IOC_EVENT_MEMORY                    8
+
+#define KFD_IOC_WAIT_RESULT_COMPLETE            0
+#define KFD_IOC_WAIT_RESULT_TIMEOUT             1
+#define KFD_IOC_WAIT_RESULT_FAIL                2
+
+#define KFD_SIGNAL_EVENT_LIMIT                  256
+
+struct kfd_ioctl_create_event_args {
+        uint64_t event_page_offset;     /* from KFD */
+        uint32_t event_trigger_data;    /* from KFD - signal events only */
+        uint32_t event_type;            /* to KFD */
+        uint32_t auto_reset;            /* to KFD */
+        uint32_t node_id;               /* to KFD - only valid for certain
+                                                        event types */
+        uint32_t event_id;              /* from KFD */
+        uint32_t event_slot_index;      /* from KFD */
+};
+
+struct kfd_ioctl_destroy_event_args {
+        uint32_t event_id;              /* to KFD */
+        uint32_t pad;
+};
+
+struct kfd_ioctl_set_event_args {
+        uint32_t event_id;              /* to KFD */
+        uint32_t pad;
+};
+
+struct kfd_ioctl_reset_event_args {
+        uint32_t event_id;              /* to KFD */
+        uint32_t pad;
+};
+
+struct kfd_memory_exception_failure {
+        uint32_t NotPresent;    /* Page not present or supervisor privilege */
+        uint32_t ReadOnly;      /* Write access to a read-only page */
+        uint32_t NoExecute;     /* Execute access to a page marked NX */
+        uint32_t pad;
+};
+
+/* memory exception data*/
+struct kfd_hsa_memory_exception_data {
+        struct kfd_memory_exception_failure failure;
+        uint64_t va;
+        uint32_t gpu_id;
+        uint32_t pad;
+};
+
+/* Event data*/
+struct kfd_event_data {
+        union {
+                struct kfd_hsa_memory_exception_data memory_exception_data;
+        };                              /* From KFD */
+        uint64_t kfd_event_data_ext;    /* pointer to an extension structure
+                                           for future exception types */
+        uint32_t event_id;              /* to KFD */
+        uint32_t pad;
+};
+
+struct kfd_ioctl_wait_events_args {
+        uint64_t events_ptr;            /* to KFD */
+        uint32_t num_events;            /* to KFD */
+        uint32_t wait_for_all;          /* to KFD */
+        uint32_t timeout;               /* to KFD */
+        uint32_t wait_result;           /* from KFD */
+};
+
 #define AMDKFD_IOCTL_BASE 'K'
 #define AMDKFD_IO(nr)                   _IO(AMDKFD_IOCTL_BASE, nr)
 #define AMDKFD_IOR(nr, type)            _IOR(AMDKFD_IOCTL_BASE, nr, type)
@@ -155,7 +232,22 @@ struct kfd_ioctl_get_process_apertures_args {
 #define AMDKFD_IOC_UPDATE_QUEUE                 \
                 AMDKFD_IOW(0x07, struct kfd_ioctl_update_queue_args)
 
+#define AMDKFD_IOC_CREATE_EVENT                 \
+                AMDKFD_IOWR(0x08, struct kfd_ioctl_create_event_args)
+
+#define AMDKFD_IOC_DESTROY_EVENT                \
+                AMDKFD_IOW(0x09, struct kfd_ioctl_destroy_event_args)
+
+#define AMDKFD_IOC_SET_EVENT                    \
+                AMDKFD_IOW(0x0A, struct kfd_ioctl_set_event_args)
+
+#define AMDKFD_IOC_RESET_EVENT                  \
+                AMDKFD_IOW(0x0B, struct kfd_ioctl_reset_event_args)
+
+#define AMDKFD_IOC_WAIT_EVENTS                  \
+                AMDKFD_IOWR(0x0C, struct kfd_ioctl_wait_events_args)
+
 #define AMDKFD_COMMAND_START            0x01
-#define AMDKFD_COMMAND_END              0x08
+#define AMDKFD_COMMAND_END              0x0D
 
 #endif