2 * Copyright (c) 1995, David Greenman
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/fxp/if_fxpvar.h,v 1.17.2.6 2002/11/13 20:58:31 iedowse Exp $
28 * $DragonFly: src/sys/dev/netif/fxp/if_fxpvar.h,v 1.8 2005/05/31 08:27:47 joerg Exp $
32 * Misc. defintions for the Intel EtherExpress Pro/100B PCI Fast
37 * Number of transmit control blocks. This determines the number
38 * of transmit buffers that can be chained in the CB list.
39 * This must be a power of two.
44 * Number of completed TX commands at which point an interrupt
45 * will be generated to garbage collect the attached buffers.
46 * Must be at least one less than FXP_NTXCB, and should be
47 * enough less so that the transmitter doesn't becomes idle
48 * during the buffer rundown (which would reduce performance).
50 #define FXP_CXINT_THRESH 120
53 * TxCB list index mask. This is used to do list wrap-around.
55 #define FXP_TXCB_MASK (FXP_NTXCB - 1)
58 * Number of receive frame area buffers. These are large so chose
62 #define FXP_NRFABUFS 192
64 #define FXP_NRFABUFS 64
68 * Maximum number of seconds that the receiver can be idle before we
69 * assume it's dead and attempt to reset it by reprogramming the
70 * multicast filter. This is part of a work-around for a bug in the
71 * NIC. See fxp_stats_update().
73 #define FXP_MAX_RX_IDLE 15
76 * Default maximum time, in microseconds, that an interrupt may be delayed
77 * in an attempt to coalesce interrupts. This is only effective if the Intel
78 * microcode is loaded, and may be changed via either loader tunables or
79 * sysctl. See also the CPUSAVER_DWORD entry in rcvbundl.h.
81 #define TUNABLE_INT_DELAY 1000
84 * Default number of packets that will be bundled, before an interrupt is
85 * generated. This is only effective if the Intel microcode is loaded, and
86 * may be changed via either loader tunables or sysctl. This may not be
87 * present in all microcode revisions, see also the CPUSAVER_BUNDLE_MAX_DWORD
88 * entry in rcvbundl.h.
90 #define TUNABLE_BUNDLE_MAX 6
93 * NOTE: Elements are ordered for optimal cacheline behavior, and NOT
94 * for functional grouping.
97 struct arpcom arpcom; /* per-interface network data */
98 struct resource *mem; /* resource descriptor for registers */
99 int rtp; /* register resource type */
100 int rgd; /* register descriptor in use */
101 struct resource *irq; /* resource descriptor for interrupt */
102 void *ih; /* interrupt handler cookie */
103 bus_space_tag_t sc_st; /* bus space tag */
104 bus_space_handle_t sc_sh; /* bus space handle */
105 struct mbuf *rfa_headm; /* first mbuf in receive frame area */
106 struct mbuf *rfa_tailm; /* last mbuf in receive frame area */
107 struct fxp_cb_tx *cbl_first; /* first active TxCB in list */
108 int tx_queued; /* # of active TxCB's */
109 int need_mcsetup; /* multicast filter needs programming */
110 struct fxp_cb_tx *cbl_last; /* last active TxCB in list */
111 struct fxp_stats *fxp_stats; /* Pointer to interface stats */
112 int rx_idle_secs; /* # of seconds RX has been idle */
113 struct callout fxp_stat_timer; /* Handle for stat timeouts */
114 struct fxp_cb_tx *cbl_base; /* base of TxCB list */
115 struct fxp_cb_mcs *mcsp; /* Pointer to mcast setup descriptor */
116 struct ifmedia sc_media; /* media information */
118 struct sysctl_ctx_list sysctl_ctx;
119 struct sysctl_oid *sysctl_tree;
120 int tunable_int_delay; /* interrupt delay value for ucode */
121 int tunable_bundle_max; /* max # frames per interrupt (ucode) */
122 int eeprom_size; /* size of serial EEPROM */
123 int suspended; /* 0 = normal 1 = suspended (APM) */
127 u_int32_t saved_maps[5]; /* pci data */
128 u_int32_t saved_biosaddr;
129 u_int8_t saved_intline;
130 u_int8_t saved_cachelnsz;
131 u_int8_t saved_lattimer;
134 #define FXP_FLAG_MWI_ENABLE 0x0001 /* MWI enable */
135 #define FXP_FLAG_READ_ALIGN 0x0002 /* align read access with cacheline */
136 #define FXP_FLAG_WRITE_ALIGN 0x0004 /* end write on cacheline */
137 #define FXP_FLAG_EXT_TXCB 0x0008 /* enable use of extended TXCB */
138 #define FXP_FLAG_SERIAL_MEDIA 0x0010 /* 10Mbps serial interface */
139 #define FXP_FLAG_LONG_PKT_EN 0x0020 /* enable long packet reception */
140 #define FXP_FLAG_ALL_MCAST 0x0040 /* accept all multicast frames */
141 #define FXP_FLAG_CU_RESUME_BUG 0x0080 /* requires workaround for CU_RESUME */
142 #define FXP_FLAG_UCODE 0x0100 /* ucode is loaded */
143 #define FXP_FLAG_DEFERRED_RNR 0x0200 /* DEVICE_POLLING deferred RNR */
145 /* Macros to ease CSR access. */
146 #define CSR_READ_1(sc, reg) \
147 bus_space_read_1((sc)->sc_st, (sc)->sc_sh, (reg))
148 #define CSR_READ_2(sc, reg) \
149 bus_space_read_2((sc)->sc_st, (sc)->sc_sh, (reg))
150 #define CSR_READ_4(sc, reg) \
151 bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (reg))
152 #define CSR_WRITE_1(sc, reg, val) \
153 bus_space_write_1((sc)->sc_st, (sc)->sc_sh, (reg), (val))
154 #define CSR_WRITE_2(sc, reg, val) \
155 bus_space_write_2((sc)->sc_st, (sc)->sc_sh, (reg), (val))
156 #define CSR_WRITE_4(sc, reg, val) \
157 bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (reg), (val))