mirror of
https://github.com/freebsd/freebsd-src
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164 lines
4.6 KiB
C
164 lines
4.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.org>
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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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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _IF_VTEVAR_H
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#define _IF_VTEVAR_H
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#define VTE_TX_RING_CNT 64
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#define VTE_TX_RING_ALIGN 16
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/*
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* The TX/RX descriptor format has no limitation for number of
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* descriptors in TX/RX ring. However, the maximum number of
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* descriptors that could be set as RX descriptor ring residue
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* counter is 255. This effectively limits number of RX
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* descriptors available to be less than or equal to 255.
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*/
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#define VTE_RX_RING_CNT 128
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#define VTE_RX_RING_ALIGN 16
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#define VTE_RX_BUF_ALIGN 4
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#define VTE_DESC_INC(x, y) ((x) = ((x) + 1) % (y))
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#define VTE_TX_RING_SZ \
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(sizeof(struct vte_tx_desc) * VTE_TX_RING_CNT)
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#define VTE_RX_RING_SZ \
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(sizeof(struct vte_rx_desc) * VTE_RX_RING_CNT)
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#define VTE_RX_BUF_SIZE_MAX (MCLBYTES - sizeof(uint32_t))
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#define VTE_MIN_FRAMELEN (ETHER_MIN_LEN - ETHER_CRC_LEN)
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struct vte_rxdesc {
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struct mbuf *rx_m;
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bus_dmamap_t rx_dmamap;
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struct vte_rx_desc *rx_desc;
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};
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struct vte_txdesc {
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struct mbuf *tx_m;
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bus_dmamap_t tx_dmamap;
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struct vte_tx_desc *tx_desc;
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int tx_flags;
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#define VTE_TXMBUF 0x0001
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};
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struct vte_chain_data {
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bus_dma_tag_t vte_parent_tag;
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bus_dma_tag_t vte_buffer_tag;
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bus_dma_tag_t vte_tx_tag;
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struct vte_txdesc vte_txdesc[VTE_TX_RING_CNT];
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struct mbuf *vte_txmbufs[VTE_TX_RING_CNT];
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bus_dma_tag_t vte_rx_tag;
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struct vte_rxdesc vte_rxdesc[VTE_RX_RING_CNT];
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bus_dma_tag_t vte_tx_ring_tag;
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bus_dmamap_t vte_tx_ring_map;
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bus_dma_tag_t vte_rx_ring_tag;
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bus_dmamap_t vte_rx_ring_map;
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bus_dmamap_t vte_rx_sparemap;
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struct vte_tx_desc *vte_tx_ring;
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bus_addr_t vte_tx_ring_paddr;
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struct vte_rx_desc *vte_rx_ring;
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bus_addr_t vte_rx_ring_paddr;
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int vte_tx_prod;
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int vte_tx_cons;
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int vte_tx_cnt;
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int vte_rx_cons;
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};
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struct vte_hw_stats {
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/* RX stats. */
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uint32_t rx_frames;
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uint32_t rx_bcast_frames;
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uint32_t rx_mcast_frames;
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uint32_t rx_runts;
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uint32_t rx_crcerrs;
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uint32_t rx_long_frames;
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uint32_t rx_fifo_full;
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uint32_t rx_desc_unavail;
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uint32_t rx_pause_frames;
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/* TX stats. */
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uint32_t tx_frames;
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uint32_t tx_underruns;
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uint32_t tx_late_colls;
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uint32_t tx_pause_frames;
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};
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struct vte_ident {
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uint16_t vendorid;
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uint16_t deviceid;
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const char *name;
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};
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/*
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* Software state per device.
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*/
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struct vte_softc {
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if_t vte_ifp;
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device_t vte_dev;
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device_t vte_miibus;
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struct resource *vte_res;
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int vte_res_id;
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int vte_res_type;
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struct resource *vte_irq;
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void *vte_intrhand;
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const struct vte_ident *vte_ident;
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uint8_t vte_eaddr[ETHER_ADDR_LEN];
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int vte_flags;
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#define VTE_FLAG_LINK 0x8000
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struct callout vte_tick_ch;
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struct vte_hw_stats vte_stats;
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struct vte_chain_data vte_cdata;
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int vte_if_flags;
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int vte_watchdog_timer;
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int vte_int_rx_mod;
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int vte_int_tx_mod;
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struct mtx vte_mtx;
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};
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/* Register access macros. */
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#define CSR_WRITE_2(_sc, reg, val) \
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bus_write_2((_sc)->vte_res, (reg), (val))
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#define CSR_READ_2(_sc, reg) \
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bus_read_2((_sc)->vte_res, (reg))
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#define VTE_LOCK(_sc) mtx_lock(&(_sc)->vte_mtx)
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#define VTE_UNLOCK(_sc) mtx_unlock(&(_sc)->vte_mtx)
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#define VTE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->vte_mtx, MA_OWNED)
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#define VTE_TX_TIMEOUT 5
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#define VTE_RESET_TIMEOUT 100
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#define VTE_TIMEOUT 1000
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#define VTE_PHY_TIMEOUT 1000
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#endif /* _IF_VTEVAR_H */
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