freebsd-skq/sys/dev/et/if_etvar.h

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/*-
* Copyright (c) 2007 The DragonFly Project. All rights reserved.
*
* This code is derived from software contributed to The DragonFly Project
* by Sepherosa Ziehau <sepherosa@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of The DragonFly Project 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 HOLDERS 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.
*
* $DragonFly: src/sys/dev/netif/et/if_etvar.h,v 1.4 2007/10/23 14:28:42 sephe Exp $
* $FreeBSD$
*/
#ifndef _IF_ETVAR_H
#define _IF_ETVAR_H
/* DragonFly compatibility */
#define EVL_ENCAPLEN ETHER_VLAN_ENCAP_LEN
/*
* Allocate the right type of mbuf for the desired total length.
*/
static __inline struct mbuf *
m_getl(int len, int how, int type, int flags, int *psize)
{
struct mbuf *m;
int size;
if (len >= MINCLSIZE) {
m = m_getcl(how, type, flags);
size = MCLBYTES;
} else if (flags & M_PKTHDR) {
m = m_gethdr(how, type);
size = MHLEN;
} else {
m = m_get(how, type);
size = MLEN;
}
if (psize != NULL)
*psize = size;
return (m);
}
#define ET_ALIGN 0x1000
#define ET_NSEG_MAX 32 /* XXX no limit actually */
#define ET_NSEG_SPARE 8
#define ET_TX_NDESC 512
#define ET_RX_NDESC 512
#define ET_RX_NRING 2
#define ET_RX_NSTAT (ET_RX_NRING * ET_RX_NDESC)
#define ET_TX_RING_SIZE (ET_TX_NDESC * sizeof(struct et_txdesc))
#define ET_RX_RING_SIZE (ET_RX_NDESC * sizeof(struct et_rxdesc))
#define ET_RXSTAT_RING_SIZE (ET_RX_NSTAT * sizeof(struct et_rxstat))
#define ET_JUMBO_FRAMELEN (ET_MEM_SIZE - ET_MEM_RXSIZE_MIN - \
ET_MEM_TXSIZE_EX)
#define ET_JUMBO_MTU (ET_JUMBO_FRAMELEN - ETHER_HDR_LEN - \
EVL_ENCAPLEN - ETHER_CRC_LEN)
#define ET_FRAMELEN(mtu) (ETHER_HDR_LEN + EVL_ENCAPLEN + (mtu) + \
ETHER_CRC_LEN)
#define ET_JSLOTS (ET_RX_NDESC + 128)
#define ET_JLEN (ET_JUMBO_FRAMELEN + ETHER_ALIGN)
#define ET_JUMBO_MEM_SIZE (ET_JSLOTS * ET_JLEN)
#define CSR_WRITE_4(sc, reg, val) \
bus_space_write_4((sc)->sc_mem_bt, (sc)->sc_mem_bh, (reg), (val))
#define CSR_READ_4(sc, reg) \
bus_space_read_4((sc)->sc_mem_bt, (sc)->sc_mem_bh, (reg))
#define ET_ADDR_HI(addr) ((uint64_t) (addr) >> 32)
#define ET_ADDR_LO(addr) ((uint64_t) (addr) & 0xffffffff)
struct et_txdesc {
uint32_t td_addr_hi;
uint32_t td_addr_lo;
uint32_t td_ctrl1; /* ET_TDCTRL1_ */
uint32_t td_ctrl2; /* ET_TDCTRL2_ */
} __packed;
#define ET_TDCTRL1_LEN_MASK 0x0000FFFF
#define ET_TDCTRL2_LAST_FRAG 0x00000001
#define ET_TDCTRL2_FIRST_FRAG 0x00000002
#define ET_TDCTRL2_INTR 0x00000004
struct et_rxdesc {
uint32_t rd_addr_lo;
uint32_t rd_addr_hi;
uint32_t rd_ctrl; /* ET_RDCTRL_ */
} __packed;
#define ET_RDCTRL_BUFIDX_MASK 0x000003FF
struct et_rxstat {
uint32_t rxst_info1;
uint32_t rxst_info2; /* ET_RXST_INFO2_ */
} __packed;
#define ET_RXST_INFO2_LEN_MASK 0x0000FFFF
#define ET_RXST_INFO2_LEN_SHIFT 0
#define ET_RXST_INFO2_BUFIDX_MASK 0x03FF0000
#define ET_RXST_INFO2_BUFIDX_SHIFT 16
#define ET_RXST_INFO2_RINGIDX_MASK 0x0C000000
#define ET_RXST_INFO2_RINGIDX_SHIFT 26
struct et_rxstatus {
uint32_t rxs_ring;
uint32_t rxs_stat_ring; /* ET_RXS_STATRING_ */
} __packed;
#define ET_RXS_STATRING_INDEX_MASK 0x0FFF0000
#define ET_RXS_STATRING_INDEX_SHIFT 16
#define ET_RXS_STATRING_WRAP 0x10000000
struct et_dmamap_ctx {
int nsegs;
bus_dma_segment_t *segs;
};
struct et_txbuf {
struct mbuf *tb_mbuf;
bus_dmamap_t tb_dmap;
};
struct et_rxbuf {
struct mbuf *rb_mbuf;
bus_dmamap_t rb_dmap;
bus_addr_t rb_paddr;
};
struct et_txstatus_data {
uint32_t *txsd_status;
bus_addr_t txsd_paddr;
bus_dma_tag_t txsd_dtag;
bus_dmamap_t txsd_dmap;
};
struct et_rxstatus_data {
struct et_rxstatus *rxsd_status;
bus_addr_t rxsd_paddr;
bus_dma_tag_t rxsd_dtag;
bus_dmamap_t rxsd_dmap;
};
struct et_rxstat_ring {
struct et_rxstat *rsr_stat;
bus_addr_t rsr_paddr;
bus_dma_tag_t rsr_dtag;
bus_dmamap_t rsr_dmap;
int rsr_index;
int rsr_wrap;
};
struct et_txdesc_ring {
struct et_txdesc *tr_desc;
bus_addr_t tr_paddr;
bus_dma_tag_t tr_dtag;
bus_dmamap_t tr_dmap;
int tr_ready_index;
int tr_ready_wrap;
};
struct et_rxdesc_ring {
struct et_rxdesc *rr_desc;
bus_addr_t rr_paddr;
bus_dma_tag_t rr_dtag;
bus_dmamap_t rr_dmap;
uint32_t rr_posreg;
int rr_index;
int rr_wrap;
};
struct et_txbuf_data {
struct et_txbuf tbd_buf[ET_TX_NDESC];
int tbd_start_index;
int tbd_start_wrap;
int tbd_used;
};
struct et_softc;
struct et_rxbuf_data;
typedef int (*et_newbuf_t)(struct et_rxbuf_data *, int, int);
struct et_rxbuf_data {
struct et_rxbuf rbd_buf[ET_RX_NDESC];
struct et_softc *rbd_softc;
struct et_rxdesc_ring *rbd_ring;
int rbd_bufsize;
et_newbuf_t rbd_newbuf;
};
struct et_softc {
struct ifnet *ifp;
device_t dev;
struct mtx sc_mtx;
device_t sc_miibus;
bus_space_handle_t sc_mem_bh;
bus_space_tag_t sc_mem_bt;
void *sc_irq_handle;
struct resource *sc_irq_res;
struct resource *sc_mem_res;
struct arpcom arpcom;
int sc_if_flags;
uint32_t sc_flags; /* ET_FLAG_ */
int sc_mem_rid;
int sc_irq_rid;
struct callout sc_tick;
int watchdog_timer;
bus_dma_tag_t sc_dtag;
struct et_rxdesc_ring sc_rx_ring[ET_RX_NRING];
struct et_rxstat_ring sc_rxstat_ring;
struct et_rxstatus_data sc_rx_status;
struct et_txdesc_ring sc_tx_ring;
struct et_txstatus_data sc_tx_status;
bus_dma_tag_t sc_mbuf_dtag;
bus_dmamap_t sc_mbuf_tmp_dmap;
struct et_rxbuf_data sc_rx_data[ET_RX_NRING];
struct et_txbuf_data sc_tx_data;
uint32_t sc_tx;
uint32_t sc_tx_intr;
/*
* Sysctl variables
*/
int sc_rx_intr_npkts;
int sc_rx_intr_delay;
int sc_tx_intr_nsegs;
uint32_t sc_timer;
};
#define ET_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
#define ET_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
#define ET_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
#define ET_FLAG_TXRX_ENABLED 0x1
#define ET_FLAG_JUMBO 0x2
#endif /* !_IF_ETVAR_H */