2 * Copyright 2014 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
23 #ifndef KFD_EVENTS_H_INCLUDED
24 #define KFD_EVENTS_H_INCLUDED
26 #include <linux/kernel.h>
27 #include <linux/hashtable.h>
28 #include <linux/types.h>
29 #include <linux/list.h>
31 #include <uapi/linux/kfd_ioctl.h>
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
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.
43 #define UNSIGNALED_EVENT_SLOT ((uint64_t)-1)
45 struct kfd_event_waiter;
49 /* All events in process, rooted at kfd_process.events. */
50 struct hlist_node events;
59 struct list_head waiters; /* List of kfd_event_waiter by waiters. */
61 /* Only for signal events. */
62 struct signal_page *signal_page;
63 unsigned int signal_slot_index;
64 uint64_t __user *user_signal_address;
66 /* type specific data */
68 struct kfd_hsa_memory_exception_data memory_exception_data;
72 #define KFD_EVENT_TIMEOUT_IMMEDIATE 0
73 #define KFD_EVENT_TIMEOUT_INFINITE 0xFFFFFFFFu
75 /* Matching HSA_EVENTTYPE */
76 #define KFD_EVENT_TYPE_SIGNAL 0
77 #define KFD_EVENT_TYPE_HW_EXCEPTION 3
78 #define KFD_EVENT_TYPE_DEBUG 5
79 #define KFD_EVENT_TYPE_MEMORY 8
81 extern void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id,
82 uint32_t valid_id_bits);