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/*-
* Copyright (c) 1997 Semen Ustimenko
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
/*
* Configuration
*/
/*#define EPIC_DIAG 1*/
/*#define EPIC_USEIOSPACE 1*/
/*#define EPIC_EARLY_RX 1*/
#ifndef ETHER_MAX_LEN
#define ETHER_MAX_LEN 1518
#endif
#ifndef ETHER_MIN_LEN
#define ETHER_MIN_LEN 64
#endif
#ifndef ETHER_CRC_LEN
#define ETHER_CRC_LEN 4
#endif
#define TX_RING_SIZE 16 /* Leave this a power of 2 */
#define RX_RING_SIZE 16 /* And this too, to do not */
/* confuse RX(TX)_RING_MASK */
#define TX_RING_MASK (TX_RING_SIZE - 1)
#define RX_RING_MASK (RX_RING_SIZE - 1)
#define ETHER_MAX_FRAME_LEN (ETHER_MAX_LEN + ETHER_CRC_LEN)
#define ETHER_ALIGN 2
/* This is driver's structure to define EPIC descriptors */
struct epic_rx_buffer {
struct mbuf *mbuf; /* mbuf receiving packet */
bus_dmamap_t map; /* DMA map */
};
struct epic_tx_buffer {
struct mbuf *mbuf; /* mbuf contained packet */
bus_dmamap_t map; /* DMA map */
};
/* PHY, known by tx driver */
#define EPIC_UNKN_PHY 0x0000
#define EPIC_QS6612_PHY 0x0001
#define EPIC_AC101_PHY 0x0002
#define EPIC_LXT970_PHY 0x0003
#define EPIC_SERIAL 0x0004
/* Driver status structure */
typedef struct {
struct ifnet *ifp;
struct resource *res;
struct resource *irq;
device_t miibus;
device_t dev;
struct callout timer;
struct mtx lock;
int tx_timeout;
void *sc_ih;
bus_dma_tag_t mtag;
bus_dma_tag_t rtag;
bus_dmamap_t rmap;
bus_dma_tag_t ttag;
bus_dmamap_t tmap;
bus_dma_tag_t ftag;
bus_dmamap_t fmap;
bus_dmamap_t sparemap;
struct epic_rx_buffer rx_buffer[RX_RING_SIZE];
struct epic_tx_buffer tx_buffer[TX_RING_SIZE];
/* Each element of array MUST be aligned on dword */
/* and bounded on PAGE_SIZE */
struct epic_rx_desc *rx_desc;
struct epic_tx_desc *tx_desc;
struct epic_frag_list *tx_flist;
u_int32_t rx_addr;
u_int32_t tx_addr;
u_int32_t frag_addr;
u_int32_t flags;
u_int32_t tx_threshold;
u_int32_t txcon;
u_int32_t miicfg;
u_int32_t cur_tx;
u_int32_t cur_rx;
u_int32_t dirty_tx;
u_int32_t pending_txs;
u_int16_t cardvend;
u_int16_t cardid;
struct mii_softc *physc;
u_int32_t phyid;
int serinst;
void *pool;
} epic_softc_t;
#define EPIC_LOCK(sc) mtx_lock(&(sc)->lock)
#define EPIC_UNLOCK(sc) mtx_unlock(&(sc)->lock)
#define EPIC_ASSERT_LOCKED(sc) mtx_assert(&(sc)->lock, MA_OWNED)
struct epic_type {
u_int16_t ven_id;
u_int16_t dev_id;
char *name;
};
#define CSR_WRITE_4(sc, reg, val) \
bus_write_4((sc)->res, (reg), (val))
#define CSR_WRITE_2(sc, reg, val) \
bus_write_2((sc)->res, (reg), (val))
#define CSR_WRITE_1(sc, reg, val) \
bus_write_1((sc)->res, (reg), (val))
#define CSR_READ_4(sc, reg) \
bus_read_4((sc)->res, (reg))
#define CSR_READ_2(sc, reg) \
bus_read_2((sc)->res, (reg))
#define CSR_READ_1(sc, reg) \
bus_read_1((sc)->res, (reg))
#define PHY_READ_2(sc, phy, reg) \
epic_read_phy_reg((sc), (phy), (reg))
#define PHY_WRITE_2(sc, phy, reg, val) \
epic_write_phy_reg((sc), (phy), (reg), (val))
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