/* * Copyright (c) 1995, David Greenman * 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. * * $FreeBSD: src/sys/dev/fxp/if_fxpvar.h,v 1.17.2.6 2002/11/13 20:58:31 iedowse Exp $ */ /* * Misc. defintions 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 #define FXP_USABLE_TXCB (FXP_NTXCB - 1) /* * Number of completed TX commands at which point an interrupt * will be generated to garbage collect the attached buffers. * Must be at least one less than FXP_NTXCB, and should be * enough less so that the transmitter doesn't becomes idle * during the buffer rundown (which would reduce performance). */ #define FXP_CXINT_THRESH 120 /* * TxCB list index mask. This is used to do list wrap-around. */ #define FXP_TXCB_MASK (FXP_NTXCB - 1) /* * Number of receive frame area buffers. These are large so chose * wisely. */ #ifdef IFPOLL_ENABLE #define FXP_NRFABUFS 192 #else #define FXP_NRFABUFS 64 #endif /* * Maximum number of seconds that the receiver can be idle before we * assume it's dead and attempt to reset it by reprogramming the * multicast filter. This is part of a work-around for a bug in the * NIC. See fxp_stats_update(). */ #define FXP_MAX_RX_IDLE 15 /* * 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, and may be changed via either loader tunables or * sysctl. See also the CPUSAVER_DWORD entry in rcvbundl.h. */ #define TUNABLE_INT_DELAY 1000 /* * Default number of packets that will be bundled, before an interrupt is * generated. This is only effective if the Intel microcode is loaded, and * may be changed via either loader tunables or sysctl. This may not be * present in all microcode revisions, see also the CPUSAVER_BUNDLE_MAX_DWORD * entry in rcvbundl.h. */ #define TUNABLE_BUNDLE_MAX 6 /* * NOTE: Elements are ordered for optimal cacheline behavior, and NOT * for functional grouping. */ struct fxp_softc { struct arpcom arpcom; /* per-interface network data */ struct resource *mem; /* resource descriptor for registers */ int rtp; /* register resource type */ int rgd; /* register descriptor in use */ struct resource *irq; /* resource descriptor for interrupt */ void *ih; /* interrupt handler cookie */ bus_space_tag_t sc_st; /* bus space tag */ bus_space_handle_t sc_sh; /* bus space handle */ struct mbuf *rfa_headm; /* first mbuf in receive frame area */ struct mbuf *rfa_tailm; /* last mbuf in receive frame area */ struct fxp_cb_tx *cbl_first; /* first active TxCB in list */ int tx_queued; /* # of active TxCB's */ int need_mcsetup; /* multicast filter needs programming */ struct fxp_cb_tx *cbl_last; /* last active TxCB in list */ struct fxp_stats *fxp_stats; /* Pointer to interface stats */ int rx_idle_secs; /* # of seconds RX has been idle */ struct callout fxp_stat_timer; /* Handle for stat timeouts */ struct fxp_cb_tx *cbl_base; /* base of TxCB list */ struct fxp_cb_mcs *mcsp; /* Pointer to mcast setup descriptor */ struct ifmedia sc_media; /* media information */ struct ifpoll_compat fxp_npoll; /* polling */ device_t miibus; int tunable_int_delay; /* interrupt delay value for ucode */ int tunable_bundle_max; /* max # frames per interrupt (ucode) */ int eeprom_size; /* size of serial EEPROM */ int suspended; /* 0 = normal 1 = suspended (APM) */ int cu_resume_bug; int revision; int flags; u_int32_t saved_maps[5]; /* pci data */ u_int32_t saved_biosaddr; u_int8_t saved_intline; u_int8_t saved_cachelnsz; u_int8_t saved_lattimer; }; #define FXP_FLAG_MWI_ENABLE 0x0001 /* MWI enable */ #define FXP_FLAG_READ_ALIGN 0x0002 /* align read access with cacheline */ #define FXP_FLAG_WRITE_ALIGN 0x0004 /* end write on cacheline */ #define FXP_FLAG_EXT_TXCB 0x0008 /* enable use of extended TXCB */ #define FXP_FLAG_SERIAL_MEDIA 0x0010 /* 10Mbps serial interface */ #define FXP_FLAG_LONG_PKT_EN 0x0020 /* enable long packet reception */ #define FXP_FLAG_ALL_MCAST 0x0040 /* accept all multicast frames */ #define FXP_FLAG_CU_RESUME_BUG 0x0080 /* requires workaround for CU_RESUME */ #define FXP_FLAG_UCODE 0x0100 /* ucode is loaded */ #define FXP_FLAG_DEFERRED_RNR 0x0200 /* IFPOLL_ENABLE deferred RNR */ /* Macros to ease CSR access. */ #define CSR_READ_1(sc, reg) \ bus_space_read_1((sc)->sc_st, (sc)->sc_sh, (reg)) #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_1(sc, reg, val) \ bus_space_write_1((sc)->sc_st, (sc)->sc_sh, (reg), (val)) #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))
