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_node *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->adev->asic_type == 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->adev); 54 ret = f2g->get_atc_vmid_pasid_mapping_info(dev->adev, 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 false; 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 false; 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 !amdgpu_no_queue_eviction_on_vm_fault); 86 } 87 88 static void cik_event_interrupt_wq(struct kfd_node *dev, 89 const uint32_t *ih_ring_entry) 90 { 91 const struct cik_ih_ring_entry *ihre = 92 (const struct cik_ih_ring_entry *)ih_ring_entry; 93 uint32_t context_id = ihre->data & 0xfffffff; 94 unsigned int vmid = (ihre->ring_id & 0x0000ff00) >> 8; 95 u32 pasid = (ihre->ring_id & 0xffff0000) >> 16; 96 97 if (pasid == 0) 98 return; 99 100 if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE) 101 kfd_signal_event_interrupt(pasid, context_id, 28); 102 else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP) 103 kfd_signal_event_interrupt(pasid, context_id, 28); 104 else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG) 105 kfd_signal_event_interrupt(pasid, context_id & 0xff, 8); 106 else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE) 107 kfd_signal_hw_exception_event(pasid); 108 else if (ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT || 109 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) { 110 struct kfd_vm_fault_info info; 111 112 kfd_smi_event_update_vmfault(dev, pasid); 113 kfd_dqm_evict_pasid(dev->dqm, pasid); 114 115 memset(&info, 0, sizeof(info)); 116 amdgpu_amdkfd_gpuvm_get_vm_fault_info(dev->adev, &info); 117 if (!info.page_addr && !info.status) 118 return; 119 120 if (info.vmid == vmid) 121 kfd_signal_vm_fault_event(dev, pasid, &info, NULL); 122 else 123 kfd_signal_vm_fault_event(dev, pasid, NULL, NULL); 124 } 125 } 126 127 const struct kfd_event_interrupt_class event_interrupt_class_cik = { 128 .interrupt_isr = cik_event_interrupt_isr, 129 .interrupt_wq = cik_event_interrupt_wq, 130 }; 131