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 { 30 const struct cik_ih_ring_entry *ihre = 31 (const struct cik_ih_ring_entry *)ih_ring_entry; 32 unsigned int vmid, pasid; 33 34 /* Only handle interrupts from KFD VMIDs */ 35 vmid = (ihre->ring_id & 0x0000ff00) >> 8; 36 if (vmid < dev->vm_info.first_vmid_kfd || 37 vmid > dev->vm_info.last_vmid_kfd) 38 return 0; 39 40 /* If there is no valid PASID, it's likely a firmware bug */ 41 pasid = (ihre->ring_id & 0xffff0000) >> 16; 42 if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt")) 43 return 0; 44 45 /* Interrupt types we care about: various signals and faults. 46 * They will be forwarded to a work queue (see below). 47 */ 48 return ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE || 49 ihre->source_id == CIK_INTSRC_SDMA_TRAP || 50 ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG || 51 ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE || 52 ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT || 53 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT; 54 } 55 56 static void cik_event_interrupt_wq(struct kfd_dev *dev, 57 const uint32_t *ih_ring_entry) 58 { 59 const struct cik_ih_ring_entry *ihre = 60 (const struct cik_ih_ring_entry *)ih_ring_entry; 61 uint32_t context_id = ihre->data & 0xfffffff; 62 unsigned int vmid = (ihre->ring_id & 0x0000ff00) >> 8; 63 unsigned int pasid = (ihre->ring_id & 0xffff0000) >> 16; 64 65 if (pasid == 0) 66 return; 67 68 if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE) 69 kfd_signal_event_interrupt(pasid, context_id, 28); 70 else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP) 71 kfd_signal_event_interrupt(pasid, context_id, 28); 72 else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG) 73 kfd_signal_event_interrupt(pasid, context_id & 0xff, 8); 74 else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE) 75 kfd_signal_hw_exception_event(pasid); 76 else if (ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT || 77 ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) { 78 struct kfd_vm_fault_info info; 79 80 kfd_process_vm_fault(dev->dqm, pasid); 81 82 memset(&info, 0, sizeof(info)); 83 dev->kfd2kgd->get_vm_fault_info(dev->kgd, &info); 84 if (!info.page_addr && !info.status) 85 return; 86 87 if (info.vmid == vmid) 88 kfd_signal_vm_fault_event(dev, pasid, &info); 89 else 90 kfd_signal_vm_fault_event(dev, pasid, NULL); 91 } 92 } 93 94 const struct kfd_event_interrupt_class event_interrupt_class_cik = { 95 .interrupt_isr = cik_event_interrupt_isr, 96 .interrupt_wq = cik_event_interrupt_wq, 97 }; 98