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 unsigned int pasid; 31 const struct cik_ih_ring_entry *ihre = 32 (const struct cik_ih_ring_entry *)ih_ring_entry; 33 34 pasid = (ihre->ring_id & 0xffff0000) >> 16; 35 36 /* Do not process in ISR, just request it to be forwarded to WQ. */ 37 return (pasid != 0) && 38 (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE || 39 ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG); 40 } 41 42 static void cik_event_interrupt_wq(struct kfd_dev *dev, 43 const uint32_t *ih_ring_entry) 44 { 45 unsigned int pasid; 46 const struct cik_ih_ring_entry *ihre = 47 (const struct cik_ih_ring_entry *)ih_ring_entry; 48 49 pasid = (ihre->ring_id & 0xffff0000) >> 16; 50 51 if (pasid == 0) 52 return; 53 54 if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE) 55 kfd_signal_event_interrupt(pasid, 0, 0); 56 else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG) 57 kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8); 58 } 59 60 const struct kfd_event_interrupt_class event_interrupt_class_cik = { 61 .interrupt_isr = cik_event_interrupt_isr, 62 .interrupt_wq = cik_event_interrupt_wq, 63 }; 64