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#include "amdgpu_amdkfd.h"
27
28static bool cik_event_interrupt_isr(struct kfd_dev *dev,
29 const uint32_t *ih_ring_entry,
30 uint32_t *patched_ihre,
31 bool *patched_flag)
32{
33 const struct cik_ih_ring_entry *ihre =
34 (const struct cik_ih_ring_entry *)ih_ring_entry;
35 const struct kfd2kgd_calls *f2g = dev->kfd2kgd;
36 unsigned int vmid, pasid;
37
38 /* This workaround is due to HW/FW limitation on Hawaii that
39 * VMID and PASID are not written into ih_ring_entry
40 */
41 if ((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
42 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) &&
43 dev->device_info->asic_family == CHIP_HAWAII) {
44 struct cik_ih_ring_entry *tmp_ihre =
45 (struct cik_ih_ring_entry *)patched_ihre;
46
47 *patched_flag = true;
48 *tmp_ihre = *ihre;
49
50 vmid = f2g->read_vmid_from_vmfault_reg(dev->kgd);
51 pasid = f2g->get_atc_vmid_pasid_mapping_pasid(dev->kgd, vmid);
52
53 tmp_ihre->ring_id &= 0x000000ff;
54 tmp_ihre->ring_id |= vmid << 8;
55 tmp_ihre->ring_id |= pasid << 16;
56
57 return (pasid != 0) &&
58 vmid >= dev->vm_info.first_vmid_kfd &&
59 vmid <= dev->vm_info.last_vmid_kfd;
60 }
61
62 /* Only handle interrupts from KFD VMIDs */
63 vmid = (ihre->ring_id & 0x0000ff00) >> 8;
64 if (vmid < dev->vm_info.first_vmid_kfd ||
65 vmid > dev->vm_info.last_vmid_kfd)
66 return 0;
67
68 /* If there is no valid PASID, it's likely a firmware bug */
69 pasid = (ihre->ring_id & 0xffff0000) >> 16;
70 if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt"))
71 return 0;
72
73 /* Interrupt types we care about: various signals and faults.
74 * They will be forwarded to a work queue (see below).
75 */
76 return ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
77 ihre->source_id == CIK_INTSRC_SDMA_TRAP ||
78 ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
79 ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE ||
80 ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
81 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT;
82}
83
84static void cik_event_interrupt_wq(struct kfd_dev *dev,
85 const uint32_t *ih_ring_entry)
86{
87 const struct cik_ih_ring_entry *ihre =
88 (const struct cik_ih_ring_entry *)ih_ring_entry;
89 uint32_t context_id = ihre->data & 0xfffffff;
90 unsigned int vmid = (ihre->ring_id & 0x0000ff00) >> 8;
91 unsigned int pasid = (ihre->ring_id & 0xffff0000) >> 16;
92
93 if (pasid == 0)
94 return;
95
96 if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
97 kfd_signal_event_interrupt(pasid, context_id, 28);
98 else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP)
99 kfd_signal_event_interrupt(pasid, context_id, 28);
100 else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
101 kfd_signal_event_interrupt(pasid, context_id & 0xff, 8);
102 else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
103 kfd_signal_hw_exception_event(pasid);
104 else if (ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
105 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) {
106 struct kfd_vm_fault_info info;
107
108 kfd_process_vm_fault(dev->dqm, pasid);
109
110 memset(&info, 0, sizeof(info));
111 amdgpu_amdkfd_gpuvm_get_vm_fault_info(dev->kgd, &info);
112 if (!info.page_addr && !info.status)
113 return;
114
115 if (info.vmid == vmid)
116 kfd_signal_vm_fault_event(dev, pasid, &info);
117 else
118 kfd_signal_vm_fault_event(dev, pasid, NULL);
119 }
120}
121
122const struct kfd_event_interrupt_class event_interrupt_class_cik = {
123 .interrupt_isr = cik_event_interrupt_isr,
124 .interrupt_wq = cik_event_interrupt_wq,
125};
126