1 /*
2 * Copyright 2016-2018 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 "soc15_int.h"
26
27
event_interrupt_isr_v9(struct kfd_dev * dev,const uint32_t * ih_ring_entry,uint32_t * patched_ihre,bool * patched_flag)28 static bool event_interrupt_isr_v9(struct kfd_dev *dev,
29 const uint32_t *ih_ring_entry,
30 uint32_t *patched_ihre,
31 bool *patched_flag)
32 {
33 uint16_t source_id, client_id, pasid, vmid;
34 const uint32_t *data = ih_ring_entry;
35
36 /* Only handle interrupts from KFD VMIDs */
37 vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
38 if (vmid < dev->vm_info.first_vmid_kfd ||
39 vmid > dev->vm_info.last_vmid_kfd)
40 return 0;
41
42 /* If there is no valid PASID, it's likely a firmware bug */
43 pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
44 if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt"))
45 return 0;
46
47 source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
48 client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
49
50 pr_debug("client id 0x%x, source id %d, pasid 0x%x. raw data:\n",
51 client_id, source_id, pasid);
52 pr_debug("%8X, %8X, %8X, %8X, %8X, %8X, %8X, %8X.\n",
53 data[0], data[1], data[2], data[3],
54 data[4], data[5], data[6], data[7]);
55
56 /* Interrupt types we care about: various signals and faults.
57 * They will be forwarded to a work queue (see below).
58 */
59 return source_id == SOC15_INTSRC_CP_END_OF_PIPE ||
60 source_id == SOC15_INTSRC_SDMA_TRAP ||
61 source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG ||
62 source_id == SOC15_INTSRC_CP_BAD_OPCODE ||
63 client_id == SOC15_IH_CLIENTID_VMC ||
64 client_id == SOC15_IH_CLIENTID_UTCL2;
65 }
66
event_interrupt_wq_v9(struct kfd_dev * dev,const uint32_t * ih_ring_entry)67 static void event_interrupt_wq_v9(struct kfd_dev *dev,
68 const uint32_t *ih_ring_entry)
69 {
70 uint16_t source_id, client_id, pasid, vmid;
71 uint32_t context_id;
72
73 source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
74 client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
75 pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
76 vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
77 context_id = SOC15_CONTEXT_ID0_FROM_IH_ENTRY(ih_ring_entry);
78
79 if (source_id == SOC15_INTSRC_CP_END_OF_PIPE)
80 kfd_signal_event_interrupt(pasid, context_id, 32);
81 else if (source_id == SOC15_INTSRC_SDMA_TRAP)
82 kfd_signal_event_interrupt(pasid, context_id & 0xfffffff, 28);
83 else if (source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG)
84 kfd_signal_event_interrupt(pasid, context_id & 0xffffff, 24);
85 else if (source_id == SOC15_INTSRC_CP_BAD_OPCODE)
86 kfd_signal_hw_exception_event(pasid);
87 else if (client_id == SOC15_IH_CLIENTID_VMC ||
88 client_id == SOC15_IH_CLIENTID_UTCL2) {
89 struct kfd_vm_fault_info info = {0};
90 uint16_t ring_id = SOC15_RING_ID_FROM_IH_ENTRY(ih_ring_entry);
91
92 info.vmid = vmid;
93 info.mc_id = client_id;
94 info.page_addr = ih_ring_entry[4] |
95 (uint64_t)(ih_ring_entry[5] & 0xf) << 32;
96 info.prot_valid = ring_id & 0x08;
97 info.prot_read = ring_id & 0x10;
98 info.prot_write = ring_id & 0x20;
99
100 kfd_process_vm_fault(dev->dqm, pasid);
101 kfd_signal_vm_fault_event(dev, pasid, &info);
102 }
103 }
104
105 const struct kfd_event_interrupt_class event_interrupt_class_v9 = {
106 .interrupt_isr = event_interrupt_isr_v9,
107 .interrupt_wq = event_interrupt_wq_v9,
108 };
109
