b33ccdb17f
Provide C-level interface for Arkville's internal HW resources MPU, (Memory Prefetch Unit) pktdir (Packet director), and RQP (Request Pacer) modules Signed-off-by: Ed Czeck <ed.czeck@atomicrules.com>
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) 2015-2017 Atomic Rules LLC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ARK_PKTDIR_H_
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#define _ARK_PKTDIR_H_
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#include <stdint.h>
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#define ARK_PKTDIR_BASE_ADR 0xa0000
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typedef void *ark_pkt_dir_t;
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/* The packet director is an internal Arkville hardware module for
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* directing packet data in non-typical flows, such as testing.
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* This module is *not* intended for end-user manipulation, hence
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* there is minimal documentation.
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*/
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/*
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* This is an overlay structures to a memory mapped FPGA device. These
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* structs will never be instantiated in ram memory
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*/
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struct ark_pkt_dir_regs {
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uint32_t ctrl;
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uint32_t status;
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uint32_t stall_cnt;
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} __attribute__ ((packed));
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struct ark_pkt_dir_inst {
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volatile struct ark_pkt_dir_regs *regs;
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};
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ark_pkt_dir_t ark_pktdir_init(void *base);
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void ark_pktdir_uninit(ark_pkt_dir_t handle);
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void ark_pktdir_setup(ark_pkt_dir_t handle, uint32_t v);
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uint32_t ark_pktdir_stall_cnt(ark_pkt_dir_t handle);
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uint32_t ark_pktdir_status(ark_pkt_dir_t handle);
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#endif
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