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#include "kfd_priv.h"
24#include "kfd_events.h"
25#include "cik_int.h"
26
27static bool cik_event_interrupt_isr(struct kfd_dev *dev,
28					const uint32_t *ih_ring_entry)
29{
30	unsigned int pasid;
31	const struct cik_ih_ring_entry *ihre =
32			(const struct cik_ih_ring_entry *)ih_ring_entry;
33
34	pasid = (ihre->ring_id & 0xffff0000) >> 16;
35
36	/* Do not process in ISR, just request it to be forwarded to WQ. */
37	return (pasid != 0) &&
38		(ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
39		ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
40		ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE);
41}
42
43static void cik_event_interrupt_wq(struct kfd_dev *dev,
44					const uint32_t *ih_ring_entry)
45{
46	unsigned int pasid;
47	const struct cik_ih_ring_entry *ihre =
48			(const struct cik_ih_ring_entry *)ih_ring_entry;
49
50	pasid = (ihre->ring_id & 0xffff0000) >> 16;
51
52	if (pasid == 0)
53		return;
54
55	if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
56		kfd_signal_event_interrupt(pasid, 0, 0);
57	else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
58		kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8);
59	else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
60		kfd_signal_hw_exception_event(pasid);
61}
62
63const struct kfd_event_interrupt_class event_interrupt_class_cik = {
64	.interrupt_isr = cik_event_interrupt_isr,
65	.interrupt_wq = cik_event_interrupt_wq,
66};