1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.h b/drivers/gpu/drm/amd/amdkfd/kfd_events.h
new file mode 100644
index 000000000000..28f6838b1f4c
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.h
@@ -0,0 +1,84 @@
+/*
+ * 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_EVENTS_H_INCLUDED
+#define KFD_EVENTS_H_INCLUDED
+
+#include <linux/kernel.h>
+#include <linux/hashtable.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include "kfd_priv.h"
+#include <uapi/linux/kfd_ioctl.h>
+
+#define KFD_EVENT_ID_NONSIGNAL_MASK 0x80000000U
+#define KFD_FIRST_NONSIGNAL_EVENT_ID KFD_EVENT_ID_NONSIGNAL_MASK
+#define KFD_LAST_NONSIGNAL_EVENT_ID UINT_MAX
+
+/*
+ * Written into kfd_signal_slot_t to indicate that the event is not signaled.
+ * Since the event protocol may need to write the event ID into memory, this
+ * must not be a valid event ID.
+ * For the sake of easy memset-ing, this must be a byte pattern.
+ */
+#define UNSIGNALED_EVENT_SLOT ((uint64_t)-1)
+
+struct kfd_event_waiter;
+struct signal_page;
+
+struct kfd_event {
+	/* All events in process, rooted at kfd_process.events. */
+	struct hlist_node events;
+
+	u32 event_id;
+
+	bool signaled;
+	bool auto_reset;
+
+	int type;
+
+	struct list_head waiters; /* List of kfd_event_waiter by waiters. */
+
+	/* Only for signal events. */
+	struct signal_page *signal_page;
+	unsigned int signal_slot_index;
+	uint64_t __user *user_signal_address;
+
+	/* type specific data */
+	union {
+		struct kfd_hsa_memory_exception_data memory_exception_data;
+	};
+};
+
+#define KFD_EVENT_TIMEOUT_IMMEDIATE 0
+#define KFD_EVENT_TIMEOUT_INFINITE 0xFFFFFFFFu
+
+/* Matching HSA_EVENTTYPE */
+#define KFD_EVENT_TYPE_SIGNAL 0
+#define KFD_EVENT_TYPE_HW_EXCEPTION 3
+#define KFD_EVENT_TYPE_DEBUG 5
+#define KFD_EVENT_TYPE_MEMORY 8
+
+extern void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id,
+					uint32_t valid_id_bits);
+
+#endif