1 /* $NetBSD: kfd_int_process_v9.c,v 1.2 2021/12/18 23:44:59 riastradh Exp $ */ 2 3 /* 4 * Copyright 2016-2018 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #include <sys/cdefs.h> 26 __KERNEL_RCSID(0, "$NetBSD: kfd_int_process_v9.c,v 1.2 2021/12/18 23:44:59 riastradh Exp $"); 27 28 #include "kfd_priv.h" 29 #include "kfd_events.h" 30 #include "soc15_int.h" 31 #include "kfd_device_queue_manager.h" 32 33 static bool event_interrupt_isr_v9(struct kfd_dev *dev, 34 const uint32_t *ih_ring_entry, 35 uint32_t *patched_ihre, 36 bool *patched_flag) 37 { 38 uint16_t source_id, client_id, pasid, vmid; 39 const uint32_t *data = ih_ring_entry; 40 41 /* Only handle interrupts from KFD VMIDs */ 42 vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry); 43 if (vmid < dev->vm_info.first_vmid_kfd || 44 vmid > dev->vm_info.last_vmid_kfd) 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 pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry); 50 51 /* This is a known issue for gfx9. Under non HWS, pasid is not set 52 * in the interrupt payload, so we need to find out the pasid on our 53 * own. 54 */ 55 if (!pasid && dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { 56 const uint32_t pasid_mask = 0xffff; 57 58 *patched_flag = true; 59 memcpy(patched_ihre, ih_ring_entry, 60 dev->device_info->ih_ring_entry_size); 61 62 pasid = dev->dqm->vmid_pasid[vmid]; 63 64 /* Patch the pasid field */ 65 patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3]) 66 & ~pasid_mask) | pasid); 67 } 68 69 pr_debug("client id 0x%x, source id %d, vmid %d, pasid 0x%x. raw data:\n", 70 client_id, source_id, vmid, pasid); 71 pr_debug("%8X, %8X, %8X, %8X, %8X, %8X, %8X, %8X.\n", 72 data[0], data[1], data[2], data[3], 73 data[4], data[5], data[6], data[7]); 74 75 /* If there is no valid PASID, it's likely a bug */ 76 if (WARN_ONCE(pasid == 0, "Bug: No PASID in KFD interrupt")) 77 return 0; 78 79 /* Interrupt types we care about: various signals and faults. 80 * They will be forwarded to a work queue (see below). 81 */ 82 return source_id == SOC15_INTSRC_CP_END_OF_PIPE || 83 source_id == SOC15_INTSRC_SDMA_TRAP || 84 source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG || 85 source_id == SOC15_INTSRC_CP_BAD_OPCODE || 86 client_id == SOC15_IH_CLIENTID_VMC || 87 client_id == SOC15_IH_CLIENTID_VMC1 || 88 client_id == SOC15_IH_CLIENTID_UTCL2; 89 } 90 91 static void event_interrupt_wq_v9(struct kfd_dev *dev, 92 const uint32_t *ih_ring_entry) 93 { 94 uint16_t source_id, client_id, pasid, vmid; 95 uint32_t context_id; 96 97 source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry); 98 client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry); 99 pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry); 100 vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry); 101 context_id = SOC15_CONTEXT_ID0_FROM_IH_ENTRY(ih_ring_entry); 102 103 if (source_id == SOC15_INTSRC_CP_END_OF_PIPE) 104 kfd_signal_event_interrupt(pasid, context_id, 32); 105 else if (source_id == SOC15_INTSRC_SDMA_TRAP) 106 kfd_signal_event_interrupt(pasid, context_id & 0xfffffff, 28); 107 else if (source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG) 108 kfd_signal_event_interrupt(pasid, context_id & 0xffffff, 24); 109 else if (source_id == SOC15_INTSRC_CP_BAD_OPCODE) 110 kfd_signal_hw_exception_event(pasid); 111 else if (client_id == SOC15_IH_CLIENTID_VMC || 112 client_id == SOC15_IH_CLIENTID_VMC1 || 113 client_id == SOC15_IH_CLIENTID_UTCL2) { 114 struct kfd_vm_fault_info info = {0}; 115 uint16_t ring_id = SOC15_RING_ID_FROM_IH_ENTRY(ih_ring_entry); 116 117 info.vmid = vmid; 118 info.mc_id = client_id; 119 info.page_addr = ih_ring_entry[4] | 120 (uint64_t)(ih_ring_entry[5] & 0xf) << 32; 121 info.prot_valid = ring_id & 0x08; 122 info.prot_read = ring_id & 0x10; 123 info.prot_write = ring_id & 0x20; 124 125 kfd_process_vm_fault(dev->dqm, pasid); 126 kfd_signal_vm_fault_event(dev, pasid, &info); 127 } 128 } 129 130 const struct kfd_event_interrupt_class event_interrupt_class_v9 = { 131 .interrupt_isr = event_interrupt_isr_v9, 132 .interrupt_wq = event_interrupt_wq_v9, 133 }; 134
Indexes created Sun Sep 21 20:09:37 GMT 2025