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.
24 #include "kfd_events.h"
27 static bool cik_event_interrupt_isr(struct kfd_dev *dev,
28 const uint32_t *ih_ring_entry)
30 const struct cik_ih_ring_entry *ihre =
31 (const struct cik_ih_ring_entry *)ih_ring_entry;
32 unsigned int vmid, pasid;
34 /* Only handle interrupts from KFD VMIDs */
35 vmid = (ihre->ring_id & 0x0000ff00) >> 8;
36 if (vmid < dev->vm_info.first_vmid_kfd ||
37 vmid > dev->vm_info.last_vmid_kfd)
40 /* If there is no valid PASID, it's likely a firmware bug */
41 pasid = (ihre->ring_id & 0xffff0000) >> 16;
42 if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt"))
45 /* Interrupt types we care about: various signals and faults.
46 * They will be forwarded to a work queue (see below).
48 return ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
49 ihre->source_id == CIK_INTSRC_SDMA_TRAP ||
50 ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
51 ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE;
54 static void cik_event_interrupt_wq(struct kfd_dev *dev,
55 const uint32_t *ih_ring_entry)
58 const struct cik_ih_ring_entry *ihre =
59 (const struct cik_ih_ring_entry *)ih_ring_entry;
60 uint32_t context_id = ihre->data & 0xfffffff;
62 pasid = (ihre->ring_id & 0xffff0000) >> 16;
67 if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
68 kfd_signal_event_interrupt(pasid, context_id, 28);
69 else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP)
70 kfd_signal_event_interrupt(pasid, context_id, 28);
71 else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
72 kfd_signal_event_interrupt(pasid, context_id & 0xff, 8);
73 else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
74 kfd_signal_hw_exception_event(pasid);
77 const struct kfd_event_interrupt_class event_interrupt_class_cik = {
78 .interrupt_isr = cik_event_interrupt_isr,
79 .interrupt_wq = cik_event_interrupt_wq,