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/* $OpenBSD: fxpvar.h,v 1.31 2009/10/15 17:54:54 deraadt Exp $ */
/* $NetBSD: if_fxpvar.h,v 1.1 1997/06/05 02:01:58 thorpej Exp $ */
/*
* Copyright (c) 1995, David Greenman
* All rights reserved.
*
* Modifications to support NetBSD:
* Copyright (c) 1997 Jason R. Thorpe. 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 unmodified, 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.
*
* Id: if_fxpvar.h,v 1.6 1998/08/02 00:29:15 dg Exp
*/
/*
* Misc. definitions for the Intel EtherExpress Pro/100B PCI Fast
* Ethernet driver
*/
/*
* Number of transmit control blocks. This determines the number
* of transmit buffers that can be chained in the CB list.
* This must be a power of two.
*/
#define FXP_NTXCB 128
/*
* Minimum and maximum number of receive frame area buffers.
*/
#define FXP_NRFABUFS_MIN 4
#define FXP_NRFABUFS_MAX 64 /* These are large so choose wisely. */
/*
* Default maximum time, in microseconds, that an interrupt may be delayed
* in an attempt to coalesce interrupts. This is only effective if the Intel
* microcode is loaded.
*/
#ifndef FXP_INT_DELAY
#define FXP_INT_DELAY 128
#endif
/*
* Default number of packets that will be bundled, before an interrupt is
* generated. This is only effective if the Intel microcode is loaded.
* This is not present in all microcode revisions.
*/
#ifndef FXP_BUNDLE_MAX
#define FXP_BUNDLE_MAX 16
#endif
/*
* Bit-mask describing minimum size frame that will be bundled.
* This is only effetive if the Intel microcode is loaded.
* This is not present in all microcode revisions. Disabled by default,
* to reduce recieving immediately interrupts from all frames with size less
* than 128 bytes.
*/
#ifndef FXP_MIN_SIZE_MASK
#define FXP_MIN_SIZE_MASK 0xFFFF
#endif
/*
* NOTE: Elements are ordered for optimal cacheline behavior, and NOT
* for functional grouping.
*/
struct fxp_txsw {
struct fxp_txsw *tx_next;
struct mbuf *tx_mbuf;
bus_dmamap_t tx_map;
bus_addr_t tx_off;
struct fxp_cb_tx *tx_cb;
};
struct fxp_ctrl {
struct fxp_cb_tx tx_cb[FXP_NTXCB];
struct fxp_stats stats;
union {
struct fxp_cb_mcs mcs;
struct fxp_cb_ias ias;
struct fxp_cb_config cfg;
struct fxp_cb_ucode code;
} u;
};
struct fxp_softc {
struct device sc_dev; /* generic device structures */
void *sc_ih; /* interrupt handler cookie */
bus_space_tag_t sc_st; /* bus space tag */
bus_space_handle_t sc_sh; /* bus space handle */
bus_dma_tag_t sc_dmat; /* bus dma tag */
struct arpcom sc_arpcom; /* per-interface network data */
struct mii_data sc_mii; /* MII media information */
struct mbuf *rfa_headm; /* first mbuf in receive frame area */
struct mbuf *rfa_tailm; /* last mbuf in receive frame area */
int sc_flags; /* misc. flags */
#define FXPF_MWI_ENABLE 0x10 /* enable use of PCI MWI command */
#define FXPF_DISABLE_STANDBY 0x20 /* currently need to work-around */
#define FXPF_UCODE 0x40 /* ucode load already attempted */
#define FXPF_RECV_WORKAROUND 0x80 /* receiver lock-up workaround */
struct timeout stats_update_to; /* Pointer to timeout structure */
int rx_idle_secs; /* # of seconds RX has been idle */
struct fxp_cb_tx *cbl_base; /* base of TxCB list */
int phy_primary_addr; /* address of primary PHY */
int phy_primary_device; /* device type of primary PHY */
int phy_10Mbps_only; /* PHY is 10Mbps-only device */
int eeprom_size; /* size of serial EEPROM */
int rx_bufs; /* how many rx buffers allocated? */
void *sc_powerhook; /* powerhook */
struct fxp_txsw txs[FXP_NTXCB];
struct fxp_txsw *sc_cbt_cons, *sc_cbt_prod, *sc_cbt_prev;
int sc_cbt_cnt;
bus_dmamap_t tx_cb_map;
bus_dma_segment_t sc_cb_seg;
int sc_cb_nseg;
struct fxp_ctrl *sc_ctrl;
bus_dmamap_t sc_rxmaps[FXP_NRFABUFS_MAX];
int sc_rxfree;
u_int32_t sc_revision; /* chip revision */
u_int16_t sc_int_delay; /* interrupt delay value for ucode */
u_int16_t sc_bundle_max; /* max # frames per interrupt (ucode) */
u_int16_t sc_min_size_mask; /* bit-mask describing the minimum
* size of frame that will be bundled */
};
/* Macros to ease CSR access. */
#define CSR_READ_2(sc, reg) \
bus_space_read_2((sc)->sc_st, (sc)->sc_sh, (reg))
#define CSR_READ_4(sc, reg) \
bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (reg))
#define CSR_WRITE_2(sc, reg, val) \
bus_space_write_2((sc)->sc_st, (sc)->sc_sh, (reg), (val))
#define CSR_WRITE_4(sc, reg, val) \
bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (reg), (val))
extern int fxp_intr(void *);
extern int fxp_attach(struct fxp_softc *, const char *);
void fxp_detach(struct fxp_softc *);
#define FXP_RXMAP_GET(sc) ((sc)->sc_rxmaps[(sc)->sc_rxfree++])
#define FXP_RXMAP_PUT(sc,map) ((sc)->sc_rxmaps[--(sc)->sc_rxfree] = (map))
#define FXP_TXCB_SYNC(sc, txs, p) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->tx_cb_map, (txs)->tx_off, \
sizeof(struct fxp_cb_tx), (p))
#define FXP_MCS_SYNC(sc, p) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->tx_cb_map, \
offsetof(struct fxp_ctrl, u.mcs), sizeof(struct fxp_cb_mcs), (p))
#define FXP_IAS_SYNC(sc, p) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->tx_cb_map, \
offsetof(struct fxp_ctrl, u.ias), sizeof(struct fxp_cb_ias), (p))
#define FXP_CFG_SYNC(sc, p) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->tx_cb_map, \
offsetof(struct fxp_ctrl, u.cfg), sizeof(struct fxp_cb_config), (p))
#define FXP_UCODE_SYNC(sc, p) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->tx_cb_map, \
offsetof(struct fxp_ctrl, u.code), sizeof(struct fxp_cb_ucode), (p))
#define FXP_STATS_SYNC(sc, p) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->tx_cb_map, \
offsetof(struct fxp_ctrl, stats), sizeof(struct fxp_stats), (p))
#define FXP_MBUF_SYNC(sc, m, p) \
bus_dmamap_sync((sc)->sc_dmat, (m), 0, (m)->dm_mapsize, (p))
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