[deliverable/linux.git] / drivers / gpu / drm / amd / amdkfd / kfd_events.h

/*
 * 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
Commit	Line	Data
f3a39818 AL	1	/*
	2	* Copyright 2014 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*/
	22
	23	#ifndef KFD_EVENTS_H_INCLUDED
	24	#define KFD_EVENTS_H_INCLUDED
	25
	26	#include <linux/kernel.h>
	27	#include <linux/hashtable.h>
	28	#include <linux/types.h>
	29	#include <linux/list.h>
	30	#include "kfd_priv.h"
59d3e8be	31	#include <uapi/linux/kfd_ioctl.h>
f3a39818 AL	32
	33	#define KFD_EVENT_ID_NONSIGNAL_MASK 0x80000000U
	34	#define KFD_FIRST_NONSIGNAL_EVENT_ID KFD_EVENT_ID_NONSIGNAL_MASK
	35	#define KFD_LAST_NONSIGNAL_EVENT_ID UINT_MAX
	36
	37	/*
	38	* Written into kfd_signal_slot_t to indicate that the event is not signaled.
	39	* Since the event protocol may need to write the event ID into memory, this
	40	* must not be a valid event ID.
	41	* For the sake of easy memset-ing, this must be a byte pattern.
	42	*/
	43	#define UNSIGNALED_EVENT_SLOT ((uint64_t)-1)
	44
	45	struct kfd_event_waiter;
	46	struct signal_page;
	47
	48	struct kfd_event {
	49	/* All events in process, rooted at kfd_process.events. */
	50	struct hlist_node events;
	51
	52	u32 event_id;
	53
	54	bool signaled;
	55	bool auto_reset;
	56
	57	int type;
	58
	59	struct list_head waiters; /* List of kfd_event_waiter by waiters. */
	60
	61	/* Only for signal events. */
	62	struct signal_page *signal_page;
	63	unsigned int signal_slot_index;
	64	uint64_t __user *user_signal_address;
59d3e8be AS	65
	66	/* type specific data */
	67	union {
	68	struct kfd_hsa_memory_exception_data memory_exception_data;
	69	};
f3a39818 AL	70	};
	71
	72	#define KFD_EVENT_TIMEOUT_IMMEDIATE 0
	73	#define KFD_EVENT_TIMEOUT_INFINITE 0xFFFFFFFFu
	74
	75	/* Matching HSA_EVENTTYPE */
	76	#define KFD_EVENT_TYPE_SIGNAL 0
930c5ff4	77	#define KFD_EVENT_TYPE_HW_EXCEPTION 3
f3a39818	78	#define KFD_EVENT_TYPE_DEBUG 5
59d3e8be	79	#define KFD_EVENT_TYPE_MEMORY 8
f3a39818 AL	80
	81	extern void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id,
	82	uint32_t valid_id_bits);
	83
	84	#endif