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