kfd_int_process_v9.c revision 1.2
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#include "kfd_device_queue_manager.h" 27 28static 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 source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry); 43 client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry); 44 pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry); 45 46 /* This is a known issue for gfx9. Under non HWS, pasid is not set 47 * in the interrupt payload, so we need to find out the pasid on our 48 * own. 49 */ 50 if (!pasid && dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { 51 const uint32_t pasid_mask = 0xffff; 52 53 *patched_flag = true; 54 memcpy(patched_ihre, ih_ring_entry, 55 dev->device_info->ih_ring_entry_size); 56 57 pasid = dev->dqm->vmid_pasid[vmid]; 58 59 /* Patch the pasid field */ 60 patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3]) 61 & ~pasid_mask) | pasid); 62 } 63 64 pr_debug("client id 0x%x, source id %d, vmid %d, pasid 0x%x. raw data:\n", 65 client_id, source_id, vmid, pasid); 66 pr_debug("%8X, %8X, %8X, %8X, %8X, %8X, %8X, %8X.\n", 67 data[0], data[1], data[2], data[3], 68 data[4], data[5], data[6], data[7]); 69 70 /* If there is no valid PASID, it's likely a bug */ 71 if (WARN_ONCE(pasid == 0, "Bug: No PASID in KFD interrupt")) 72 return 0; 73 74 /* Interrupt types we care about: various signals and faults. 75 * They will be forwarded to a work queue (see below). 76 */ 77 return source_id == SOC15_INTSRC_CP_END_OF_PIPE || 78 source_id == SOC15_INTSRC_SDMA_TRAP || 79 source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG || 80 source_id == SOC15_INTSRC_CP_BAD_OPCODE || 81 client_id == SOC15_IH_CLIENTID_VMC || 82 client_id == SOC15_IH_CLIENTID_VMC1 || 83 client_id == SOC15_IH_CLIENTID_UTCL2; 84} 85 86static void event_interrupt_wq_v9(struct kfd_dev *dev, 87 const uint32_t *ih_ring_entry) 88{ 89 uint16_t source_id, client_id, pasid, vmid; 90 uint32_t context_id; 91 92 source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry); 93 client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry); 94 pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry); 95 vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry); 96 context_id = SOC15_CONTEXT_ID0_FROM_IH_ENTRY(ih_ring_entry); 97 98 if (source_id == SOC15_INTSRC_CP_END_OF_PIPE) 99 kfd_signal_event_interrupt(pasid, context_id, 32); 100 else if (source_id == SOC15_INTSRC_SDMA_TRAP) 101 kfd_signal_event_interrupt(pasid, context_id & 0xfffffff, 28); 102 else if (source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG) 103 kfd_signal_event_interrupt(pasid, context_id & 0xffffff, 24); 104 else if (source_id == SOC15_INTSRC_CP_BAD_OPCODE) 105 kfd_signal_hw_exception_event(pasid); 106 else if (client_id == SOC15_IH_CLIENTID_VMC || 107 client_id == SOC15_IH_CLIENTID_VMC1 || 108 client_id == SOC15_IH_CLIENTID_UTCL2) { 109 struct kfd_vm_fault_info info = {0}; 110 uint16_t ring_id = SOC15_RING_ID_FROM_IH_ENTRY(ih_ring_entry); 111 112 info.vmid = vmid; 113 info.mc_id = client_id; 114 info.page_addr = ih_ring_entry[4] | 115 (uint64_t)(ih_ring_entry[5] & 0xf) << 32; 116 info.prot_valid = ring_id & 0x08; 117 info.prot_read = ring_id & 0x10; 118 info.prot_write = ring_id & 0x20; 119 120 kfd_process_vm_fault(dev->dqm, pasid); 121 kfd_signal_vm_fault_event(dev, pasid, &info); 122 } 123} 124 125const struct kfd_event_interrupt_class event_interrupt_class_v9 = { 126 .interrupt_isr = event_interrupt_isr_v9, 127 .interrupt_wq = event_interrupt_wq_v9, 128}; 129