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9494a8dd8d
This patch adds the H/W queues module and the code to initialize Goya's various compute and DMA engines and their queues. Goya has 5 DMA channels, 8 TPC engines and a single MME engine. For each channel/engine, there is a H/W queue logic which is used to pass commands from the user to the H/W. That logic is called QMAN. There are two types of QMANs: external and internal. The DMA QMANs are considered external while the TPC and MME QMANs are considered internal. For each external queue there is a completion queue, which is located on the Host memory. The differences between external and internal QMANs are: 1. The location of the queue's memory. External QMANs are located on the Host memory while internal QMANs are located on the on-chip memory. 2. The external QMAN write an entry to a completion queue and sends an MSI-X interrupt upon completion of a command buffer that was given to it. The internal QMAN doesn't do that. Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright 2016-2018 HabanaLabs, Ltd.
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* All Rights Reserved.
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*
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*/
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#ifndef QMAN_IF_H
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#define QMAN_IF_H
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#include <linux/types.h>
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/*
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* PRIMARY QUEUE
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*/
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struct hl_bd {
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__le64 ptr;
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__le32 len;
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__le32 ctl;
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};
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#define HL_BD_SIZE sizeof(struct hl_bd)
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/*
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* BD_CTL_REPEAT_VALID tells the CP whether the repeat field in the BD CTL is
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* valid. 1 means the repeat field is valid, 0 means not-valid,
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* i.e. repeat == 1
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*/
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#define BD_CTL_REPEAT_VALID_SHIFT 24
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#define BD_CTL_REPEAT_VALID_MASK 0x01000000
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#define BD_CTL_SHADOW_INDEX_SHIFT 0
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#define BD_CTL_SHADOW_INDEX_MASK 0x00000FFF
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/*
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* COMPLETION QUEUE
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*/
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struct hl_cq_entry {
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__le32 data;
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};
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#define HL_CQ_ENTRY_SIZE sizeof(struct hl_cq_entry)
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#define CQ_ENTRY_READY_SHIFT 31
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#define CQ_ENTRY_READY_MASK 0x80000000
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#define CQ_ENTRY_SHADOW_INDEX_VALID_SHIFT 30
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#define CQ_ENTRY_SHADOW_INDEX_VALID_MASK 0x40000000
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#define CQ_ENTRY_SHADOW_INDEX_SHIFT BD_CTL_SHADOW_INDEX_SHIFT
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#define CQ_ENTRY_SHADOW_INDEX_MASK BD_CTL_SHADOW_INDEX_MASK
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#endif /* QMAN_IF_H */
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