Chris Freehill
a8d049fa0d
Change-Id: I6102b9910dbb9d09e09bb262a03c5c0ad4ce66f4
[ROCm/ROCR-Runtime commit: 11fd5c2562]
94 строки
3.5 KiB
C++
94 строки
3.5 KiB
C++
/*
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* Copyright (C) 2014-2018 Advanced Micro Devices, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "SDMAQueue.hpp"
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#include "SDMAPacket.hpp"
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SDMAQueue::SDMAQueue(void) {
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CMD_NOP = 0;
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}
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SDMAQueue::~SDMAQueue(void) {
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}
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unsigned int SDMAQueue::Wptr() {
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/* In SDMA queues write pointers are saved in bytes, convert the
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* wptr value to dword to fit the way BaseQueue works. On Vega10
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* the write ptr is 64-bit. We only read the low 32 bit (assuming
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* the queue buffer is smaller than 4GB) and modulo divide by the
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* queue size to simulate a 32-bit read pointer.
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*/
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return (*m_Resources.Queue_write_ptr % m_QueueBuf->Size()) /
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sizeof(unsigned int);
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}
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unsigned int SDMAQueue::Rptr() {
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/* In SDMA queues read pointers are saved in bytes, convert the
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* read value to dword to fit the way BaseQueue works. On Vega10
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* the read ptr is 64-bit. We only read the low 32 bit (assuming
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* the queue buffer is smaller than 4GB) and modulo divide by the
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* queue size to simulate a 32-bit read pointer.
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*/
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return (*m_Resources.Queue_read_ptr % m_QueueBuf->Size()) /
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sizeof(unsigned int);
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}
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unsigned int SDMAQueue::RptrWhenConsumed() {
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/* Rptr is same size and byte units as Wptr. Here we only care
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* about the low 32-bits. When all packets are consumed, read and
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* write pointers should have the same value.
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*/
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return *m_Resources.Queue_write_ptr;
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}
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void SDMAQueue::SubmitPacket() {
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// m_pending Wptr is in dwords
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if (m_FamilyId < FAMILY_AI) {
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// Pre-Vega10 uses 32-bit wptr and doorbell
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unsigned int wPtrInBytes = m_pendingWptr * sizeof(unsigned int);
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MemoryBarrier();
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*m_Resources.Queue_write_ptr = wPtrInBytes;
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MemoryBarrier();
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*(m_Resources.Queue_DoorBell) = wPtrInBytes;
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} else {
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// Vega10 and later uses 64-bit wptr and doorbell
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HSAuint64 wPtrInBytes = m_pendingWptr64 * sizeof(unsigned int);
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MemoryBarrier();
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*m_Resources.Queue_write_ptr_aql = wPtrInBytes;
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MemoryBarrier();
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*(m_Resources.Queue_DoorBell_aql) = wPtrInBytes;
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}
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}
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void SDMAQueue::Wait4PacketConsumption(HsaEvent *event, unsigned int timeOut) {
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if (event) {
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PlacePacket(SDMAFencePacket(m_FamilyId, (void*)event->EventData.HWData2, event->EventId));
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PlaceAndSubmitPacket(SDMATrapPacket(event->EventId));
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EXPECT_SUCCESS(hsaKmtWaitOnEvent(event, timeOut));
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} else {
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BaseQueue::Wait4PacketConsumption(NULL, timeOut);
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}
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}
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