diff options
Diffstat (limited to 'drivers/net/ark/ark_pktdir.h')
| -rw-r--r-- | drivers/net/ark/ark_pktdir.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/net/ark/ark_pktdir.h b/drivers/net/ark/ark_pktdir.h new file mode 100644 index 00000000..e13fe821 --- /dev/null +++ b/drivers/net/ark/ark_pktdir.h @@ -0,0 +1,70 @@ +/*- + * BSD LICENSE + * + * Copyright (c) 2015-2017 Atomic Rules LLC + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _ARK_PKTDIR_H_ +#define _ARK_PKTDIR_H_ + +#include <stdint.h> + +#define ARK_PKTDIR_BASE_ADR 0xa0000 + +typedef void *ark_pkt_dir_t; + + +/* The packet director is an internal Arkville hardware module for + * directing packet data in non-typical flows, such as testing. + * This module is *not* intended for end-user manipulation, hence + * there is minimal documentation. + */ + +/* + * This is an overlay structures to a memory mapped FPGA device. These + * structs will never be instantiated in ram memory + */ +struct ark_pkt_dir_regs { + uint32_t ctrl; + uint32_t status; + uint32_t stall_cnt; +} __attribute__ ((packed)); + +struct ark_pkt_dir_inst { + volatile struct ark_pkt_dir_regs *regs; +}; + +ark_pkt_dir_t ark_pktdir_init(void *base); +void ark_pktdir_uninit(ark_pkt_dir_t handle); +void ark_pktdir_setup(ark_pkt_dir_t handle, uint32_t v); +uint32_t ark_pktdir_stall_cnt(ark_pkt_dir_t handle); +uint32_t ark_pktdir_status(ark_pkt_dir_t handle); + +#endif |