108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
/*
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* Copyright (c) 2019, ETH Zurich.
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* All rights reserved.
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*
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* This file is distributed under the terms in the attached LICENSE file.
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* If you do not find this file, copies can be found by writing to:
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* ETH Zurich D-INFK, Universitaetstrasse 6, CH-8092 Zurich. Attn: Systems Group.
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*/
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#ifndef ENET_H_
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#define ENET_H_
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//#define ENET_DEBUG_OPTION 1
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#if defined(ENET_DEBUG_OPTION)
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#define ENET_DEBUG(x...) debug_printf("[enet] " x);
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#else
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#define ENET_DEBUG(fmt, ...) ((void)0)
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#endif
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#define ENET_PROMISC
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#define TX_RING_SIZE 512
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#define ENET_RX_FRSIZE 2048
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#define ENET_RX_PAGES 256
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#define ENET_MAX_PKT_SIZE 1536
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#define ENET_MAX_BUF_SIZE 2048
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#define RX_RING_SIZE (BASE_PAGE_SIZE / ENET_RX_FRSIZE) * ENET_RX_PAGES
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#define ENET_RX_EMPTY 0x8000
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#define ENET_SC_WRAP ((ushort)0x2000)
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#define ENET_RX_intr ((ushort)0x1000)
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#define ENET_RX_LAST ((ushort) 0x0800)
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#define ENET_RX_FIRST ((ushort) 0x0400)
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#define ENET_RX_MISS ((ushort) 0x0100)
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#define ENET_RX_LG ((ushort) 0x0020)
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#define ENET_RX_NO ((ushort) 0x0010)
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#define ENET_RX_SH ((ushort) 0x0008)
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#define ENET_RX_CR ((ushort) 0x0004)
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#define ENET_RX_OV ((ushort) 0x0002)
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#define ENET_RX_CL ((ushort) 0x0001)
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#define ENET_RX_STATS ((ushort) 0x013f)
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#define ENET_TX_READY 0x8000
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#define ENET_TX_WRAP 0x2000
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#define ENET_TX_LAST 0x0800
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#define ENET_TX_CRC 0x0400
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struct region_entry {
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uint32_t rid;
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struct dmem mem;
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struct region_entry* next;
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};
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struct enet_queue {
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struct devq q;
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size_t size;
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// stop and wake threashold
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uint16_t stop_th;
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uint16_t wake_th;
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char* tso_hdr;
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struct capref regs;
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struct dmem desc_mem;
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enet_t* d;
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// hd + tail
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size_t head;
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size_t tail;
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// alignment
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size_t align;
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// Descriptor + Cleanq
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enet_bufdesc_array_t *ring;
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struct devq_buf *ring_bufs;
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struct region_entry* regions;
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};
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struct enet_driver_state {
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struct bfdriver_instance *bfi;
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struct capref regs;
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lvaddr_t d_vaddr;
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struct enet_queue* rxq;
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struct enet_queue* txq;
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enet_t* d;
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uint64_t mac;
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uint32_t phy_id;
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struct capref rx_mem;
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struct capref tx_mem;
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};
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#define ENET_HASH_BITS 6
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#define ENET_CRC32_POLY 0xEDB88320
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#endif // ndef ENET_H_
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