xref: /linux/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c (revision af50e4ba34f4c45e92535364133d4deb5931c1c5)
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 
27 static 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_SDMA_TRAP ||
40 		ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
41 		ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE);
42 }
43 
44 static void cik_event_interrupt_wq(struct kfd_dev *dev,
45 					const uint32_t *ih_ring_entry)
46 {
47 	unsigned int pasid;
48 	const struct cik_ih_ring_entry *ihre =
49 			(const struct cik_ih_ring_entry *)ih_ring_entry;
50 	uint32_t context_id = ihre->data & 0xfffffff;
51 
52 	pasid = (ihre->ring_id & 0xffff0000) >> 16;
53 
54 	if (pasid == 0)
55 		return;
56 
57 	if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
58 		kfd_signal_event_interrupt(pasid, context_id, 28);
59 	else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP)
60 		kfd_signal_event_interrupt(pasid, context_id, 28);
61 	else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
62 		kfd_signal_event_interrupt(pasid, context_id & 0xff, 8);
63 	else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
64 		kfd_signal_hw_exception_event(pasid);
65 }
66 
67 const struct kfd_event_interrupt_class event_interrupt_class_cik = {
68 	.interrupt_isr = cik_event_interrupt_isr,
69 	.interrupt_wq = cik_event_interrupt_wq,
70 };
71