38a4657ea4
- New firmware version for DDM (Downstream Data Mover) - Remove device-level start, stop, and reset operations - Add queue-based start, stop and reset as required by firmware Signed-off-by: Ed Czeck <ed.czeck@atomicrules.com>
116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 2015-2018 Atomic Rules LLC
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*/
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#ifndef _ARK_DDM_H_
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#define _ARK_DDM_H_
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#include <stdint.h>
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#include <rte_memory.h>
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/* The DDM or Downstream Data Mover is an internal Arkville hardware
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* module for moving packet from host memory to the TX packet streams.
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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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/* struct defining Tx meta data -- fixed in FPGA -- 8 bytes */
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union ark_tx_meta {
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uint64_t physaddr;
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struct {
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uint32_t usermeta0;
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uint32_t usermeta1;
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};
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struct {
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uint16_t data_len; /* of this MBUF */
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#define ARK_DDM_EOP 0x01
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#define ARK_DDM_SOP 0x02
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uint8_t flags;
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uint8_t meta_cnt;
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uint32_t user1;
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};
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} __rte_packed;
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/*
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* DDM core hardware structures
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* These are 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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#define ARK_DDM_CFG 0x0000
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/* Set unique HW ID for hardware version */
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#define ARK_DDM_MODID 0x204d4444
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#define ARK_DDM_MODVER 0x37313232
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struct ark_ddm_cfg_t {
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union {
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char id[4];
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uint32_t idnum;
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};
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union {
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char ver[4];
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uint32_t vernum;
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volatile uint32_t tlp_stats_clear;
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};
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uint32_t r0;
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volatile uint32_t tag_max;
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volatile uint32_t command;
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uint32_t write_index_interval; /* 4ns each */
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volatile uint64_t qflow;
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};
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#define ARK_DDM_STATS 0x0020
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struct ark_ddm_stats_t {
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volatile uint64_t tx_byte_count;
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volatile uint64_t tx_pkt_count;
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volatile uint64_t tx_mbuf_count;
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};
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#define ARK_DDM_QUEUE_STATS 0x00a8
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struct ark_ddm_qstats_t {
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volatile uint64_t byte_count;
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volatile uint64_t pkt_count;
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volatile uint64_t mbuf_count;
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};
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#define ARK_DDM_SETUP 0x00e0
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struct ark_ddm_setup_t {
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rte_iova_t cons_write_index_addr;
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volatile uint32_t qcommand;
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volatile uint32_t cons_index;
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};
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#define ARK_DDM_EXPECTED_SIZE 256
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#define ARK_DDM_QOFFSET ARK_DDM_EXPECTED_SIZE
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/* Consolidated structure */
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struct ark_ddm_t {
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struct ark_ddm_cfg_t cfg;
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uint8_t reserved0[(ARK_DDM_STATS - ARK_DDM_CFG) -
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sizeof(struct ark_ddm_cfg_t)];
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struct ark_ddm_stats_t stats;
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uint8_t reserved1[(ARK_DDM_QUEUE_STATS - ARK_DDM_STATS) -
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sizeof(struct ark_ddm_stats_t)];
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struct ark_ddm_qstats_t queue_stats;
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uint8_t reserved5[(ARK_DDM_SETUP - ARK_DDM_QUEUE_STATS) -
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sizeof(struct ark_ddm_qstats_t)];
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struct ark_ddm_setup_t setup;
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uint8_t reserved_p[(ARK_DDM_EXPECTED_SIZE - ARK_DDM_SETUP) -
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sizeof(struct ark_ddm_setup_t)];
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};
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/* DDM function prototype */
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int ark_ddm_verify(struct ark_ddm_t *ddm);
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void ark_ddm_stats_reset(struct ark_ddm_t *ddm);
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void ark_ddm_queue_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr);
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void ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg);
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uint64_t ark_ddm_queue_byte_count(struct ark_ddm_t *ddm);
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uint64_t ark_ddm_queue_pkt_count(struct ark_ddm_t *ddm);
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void ark_ddm_queue_reset_stats(struct ark_ddm_t *ddm);
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void ark_ddm_queue_enable(struct ark_ddm_t *ddm, int enable);
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#endif
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