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