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 #include "kfd_smi_events.h" 28 29 static bool cik_event_interrupt_isr(struct kfd_dev *dev, 30 const uint32_t *ih_ring_entry, 31 uint32_t *patched_ihre, 32 bool *patched_flag) 33 { 34 const struct cik_ih_ring_entry *ihre = 35 (const struct cik_ih_ring_entry *)ih_ring_entry; 36 const struct kfd2kgd_calls *f2g = dev->kfd2kgd; 37 unsigned int vmid; 38 uint16_t pasid; 39 bool ret; 40 41 /* This workaround is due to HW/FW limitation on Hawaii that 42 * VMID and PASID are not written into ih_ring_entry 43 */ 44 if ((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT || 45 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) && 46 dev->device_info->asic_family == CHIP_HAWAII) { 47 struct cik_ih_ring_entry *tmp_ihre = 48 (struct cik_ih_ring_entry *)patched_ihre; 49 50 *patched_flag = true; 51 *tmp_ihre = *ihre; 52 53 vmid = f2g->read_vmid_from_vmfault_reg(dev->kgd); 54 ret = f2g->get_atc_vmid_pasid_mapping_info(dev->kgd, vmid, &pasid); 55 56 tmp_ihre->ring_id &= 0x000000ff; 57 tmp_ihre->ring_id |= vmid << 8; 58 tmp_ihre->ring_id |= pasid << 16; 59 60 return ret && (pasid != 0) && 61 vmid >= dev->vm_info.first_vmid_kfd && 62 vmid <= dev->vm_info.last_vmid_kfd; 63 } 64 65 /* Only handle interrupts from KFD VMIDs */ 66 vmid = (ihre->ring_id & 0x0000ff00) >> 8; 67 if (vmid < dev->vm_info.first_vmid_kfd || 68 vmid > dev->vm_info.last_vmid_kfd) 69 return 0; 70 71 /* If there is no valid PASID, it's likely a firmware bug */ 72 pasid = (ihre->ring_id & 0xffff0000) >> 16; 73 if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt")) 74 return 0; 75 76 /* Interrupt types we care about: various signals and faults. 77 * They will be forwarded to a work queue (see below). 78 */ 79 return ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE || 80 ihre->source_id == CIK_INTSRC_SDMA_TRAP || 81 ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG || 82 ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE || 83 ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT || 84 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT; 85 } 86 87 static void cik_event_interrupt_wq(struct kfd_dev *dev, 88 const uint32_t *ih_ring_entry) 89 { 90 const struct cik_ih_ring_entry *ihre = 91 (const struct cik_ih_ring_entry *)ih_ring_entry; 92 uint32_t context_id = ihre->data & 0xfffffff; 93 unsigned int vmid = (ihre->ring_id & 0x0000ff00) >> 8; 94 unsigned int pasid = (ihre->ring_id & 0xffff0000) >> 16; 95 96 if (pasid == 0) 97 return; 98 99 if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE) 100 kfd_signal_event_interrupt(pasid, context_id, 28); 101 else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP) 102 kfd_signal_event_interrupt(pasid, context_id, 28); 103 else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG) 104 kfd_signal_event_interrupt(pasid, context_id & 0xff, 8); 105 else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE) 106 kfd_signal_hw_exception_event(pasid); 107 else if (ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT || 108 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) { 109 struct kfd_vm_fault_info info; 110 111 kfd_smi_event_update_vmfault(dev, pasid); 112 kfd_process_vm_fault(dev->dqm, pasid); 113 114 memset(&info, 0, sizeof(info)); 115 amdgpu_amdkfd_gpuvm_get_vm_fault_info(dev->kgd, &info); 116 if (!info.page_addr && !info.status) 117 return; 118 119 if (info.vmid == vmid) 120 kfd_signal_vm_fault_event(dev, pasid, &info); 121 else 122 kfd_signal_vm_fault_event(dev, pasid, NULL); 123 } 124 } 125 126 const struct kfd_event_interrupt_class event_interrupt_class_cik = { 127 .interrupt_isr = cik_event_interrupt_isr, 128 .interrupt_wq = cik_event_interrupt_wq, 129 }; 130