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if_vtevar.h revision 1.2.2.1 
      1 /*	$NetBSD: if_vtevar.h,v 1.2.2.1 2012/02/18 07:34:43 mrg Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2010, Pyun YongHyeon <yongari (at) FreeBSD.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice unmodified, this list of conditions, and the following
     12  *    disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  *
     29  * FreeBSD: src/sys/dev/vte/if_vtevar.h,v 1.1 2010/12/31 00:21:41 yongari Exp
     30  */
     31 
     32 #ifndef	_IF_VTEVAR_H
     33 #define	_IF_VTEVAR_H
     34 
     35 #define	VTE_TX_RING_CNT		64
     36 #define	VTE_TX_RING_ALIGN	16
     37 /*
     38  * The TX/RX descriptor format has no limitation for number of
     39  * descriptors in TX/RX ring.  However, the maximum number of
     40  * descriptors that could be set as RX descriptor ring residue
     41  * counter is 255.  This effectively limits number of RX
     42  * descriptors available to be less than or equal to 255.
     43  */
     44 #define	VTE_RX_RING_CNT		128
     45 #define	VTE_RX_RING_ALIGN	16
     46 #define	VTE_RX_BUF_ALIGN	4
     47 
     48 #define	VTE_DESC_INC(x, y)	((x) = ((x) + 1) % (y))
     49 
     50 #define	VTE_TX_RING_SZ		\
     51 	(sizeof(struct vte_tx_desc) * VTE_TX_RING_CNT)
     52 #define	VTE_RX_RING_SZ		\
     53 	(sizeof(struct vte_rx_desc) * VTE_RX_RING_CNT)
     54 
     55 #define	VTE_RX_BUF_SIZE_MAX	(MCLBYTES - sizeof(uint32_t))
     56 
     57 #define	VTE_MIN_FRAMELEN	(ETHER_MIN_LEN - ETHER_CRC_LEN)
     58 
     59 struct vte_rxdesc {
     60 	struct mbuf		*rx_m;
     61 	bus_dma_segment_t	rx_seg;
     62 	bus_dmamap_t		rx_dmamap;
     63 	struct vte_rx_desc	*rx_desc;
     64 };
     65 
     66 struct vte_txdesc {
     67 	struct mbuf		*tx_m;
     68 	bus_dma_segment_t	*tx_seg;
     69 	bus_dmamap_t		tx_dmamap;
     70 	struct vte_tx_desc	*tx_desc;
     71 	int			tx_flags;
     72 #define	VTE_TXMBUF		0x0001
     73 };
     74 
     75 struct vte_chain_data {
     76 	struct vte_txdesc	vte_txdesc[VTE_TX_RING_CNT];
     77 	struct mbuf		*vte_txmbufs[VTE_TX_RING_CNT];
     78 	struct vte_rxdesc	vte_rxdesc[VTE_RX_RING_CNT];
     79 	bus_dmamap_t		vte_tx_ring_map;
     80 	bus_dma_segment_t	vte_tx_ring_seg[1];
     81 	bus_dmamap_t		vte_rx_ring_map;
     82 	bus_dma_segment_t	vte_rx_ring_seg[1];
     83 	bus_dmamap_t		vte_rr_ring_map;
     84 	bus_dma_segment_t	vte_rr_ring_seg[1];
     85 	bus_dmamap_t		vte_rx_sparemap;
     86 	bus_dmamap_t		vte_cmb_map;
     87 	bus_dmamap_t		vte_smb_map;
     88 	struct vte_tx_desc	*vte_tx_ring;
     89 	struct vte_rx_desc	*vte_rx_ring;
     90 
     91 	int			vte_tx_prod;
     92 	int			vte_tx_cons;
     93 	int			vte_tx_cnt;
     94 	int			vte_rx_cons;
     95 };
     96 
     97 struct vte_hw_stats {
     98 	/* RX stats. */
     99 	uint32_t rx_frames;
    100 	uint32_t rx_bcast_frames;
    101 	uint32_t rx_mcast_frames;
    102 	uint32_t rx_runts;
    103 	uint32_t rx_crcerrs;
    104 	uint32_t rx_long_frames;
    105 	uint32_t rx_fifo_full;
    106 	uint32_t rx_desc_unavail;
    107 	uint32_t rx_pause_frames;
    108 
    109 	/* TX stats. */
    110 	uint32_t tx_frames;
    111 	uint32_t tx_underruns;
    112 	uint32_t tx_late_colls;
    113 	uint32_t tx_pause_frames;
    114 };
    115 
    116 /*
    117  * Software state per device.
    118  */
    119 struct vte_softc {
    120 	device_t		vte_dev;
    121 	bus_space_tag_t		vte_bustag;
    122 	bus_space_handle_t	vte_bushandle;
    123 	bus_dma_tag_t		vte_dmatag;
    124 	void*			vte_ih;
    125 	struct ethercom		vte_ec;
    126 	mii_data_t		vte_mii;
    127 	device_t		vte_miibus;
    128 	uint8_t			vte_eaddr[ETHER_ADDR_LEN];
    129 	int			vte_flags;
    130 #define	VTE_FLAG_LINK		0x8000
    131 
    132 	struct callout		vte_tick_ch;
    133 	struct vte_hw_stats	vte_stats;
    134 	struct vte_chain_data	vte_cdata;
    135 	int			vte_if_flags;
    136 	int			vte_watchdog_timer;
    137 	struct sysctllog	*vte_clog;
    138 	int			vte_int_rx_mod;
    139 	int			vte_int_tx_mod;
    140 
    141 	krndsource_t	rnd_source;
    142 };
    143 
    144 #define vte_if	vte_ec.ec_if
    145 #define vte_bpf	vte_if.if_bpf
    146 
    147 /* Register access macros. */
    148 #define	CSR_WRITE_2(_sc, reg, val)	\
    149 	bus_space_write_2((_sc)->vte_bustag,  (_sc)->vte_bushandle, \
    150 	(reg), (val))
    151 #define	CSR_READ_2(_sc, reg)		\
    152 	bus_space_read_2((_sc)->vte_bustag,  (_sc)->vte_bushandle, (reg))
    153 
    154 #define	VTE_TX_TIMEOUT		5
    155 #define	VTE_RESET_TIMEOUT	100
    156 #define	VTE_TIMEOUT		1000
    157 #define	VTE_PHY_TIMEOUT		1000
    158 
    159 #endif	/* _IF_VTEVAR_H */
    160