1/*-
2 * Copyright (c) 1999 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Paul Kranenburg.
7 *
8 * Redistribution and use in source and binary forms, with or without

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30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 *
36 * from: NetBSD: hmevar.h,v 1.5 2000/06/25 01:10:04 eeh Exp
37 *
38 * $FreeBSD: head/sys/dev/hme/if_hmevar.h 93043 2002-03-23 19:37:11Z tmm $
39 */
40
41#include <sys/callout.h>
42
43/*
44 * Number of receive and transmit descriptors. For each receive descriptor,
45 * an mbuf cluster is allocated and set up to receive a packet, and a dma map
46 * is created. Therefore, this number should not be too high to not waste
47 * memory.
48 * TX descriptors have less static cost (a dma map is allocated which could
49 * cause bounce buffers to be reserved; other that that, the only required
50 * memory is sizeof(struct hme_txdesc)).
51 */
52#define HME_NRXDESC 128
53#define HME_NTXDESC 64
54
55/* Maximum size of a mapped RX buffer. */
56#define HME_BUFSZ 1600
57
58/*
59 * RX DMA descriptor. The descriptors are preallocated; the dma map is
60 * reused.
61 */
62struct hme_rxdesc {
63 struct mbuf *hrx_m;
64 bus_dmamap_t hrx_dmamap;
65 int hrx_offs;
66 bus_size_t hrx_len;
67};
68
69struct hme_txdesc {
70 struct mbuf *htx_m;
71 bus_dmamap_t htx_dmamap;
72 int htx_flags;
73};
74
75/* Value for htx_flags */
76#define HTXF_MAPPED 1
77
78struct hme_ring {
79 /* Ring Descriptors */
80 caddr_t rb_membase; /* Packet buffer: CPU address */
81 bus_addr_t rb_dmabase; /* Packet buffer: DMA address */
82 caddr_t rb_txd; /* Transmit descriptors */
83 bus_addr_t rb_txddma; /* DMA address of same */
84 caddr_t rb_rxd; /* Receive descriptors */
85 bus_addr_t rb_rxddma; /* DMA address of same */
86
87 /* Ring Descriptor state */
88 int rb_tdhead, rb_tdtail;
89 int rb_rdtail;
90 int rb_td_nbusy;
91
92 /* Descriptors */
93 struct hme_rxdesc rb_rxdesc[HME_NRXDESC];
94 struct hme_txdesc rb_txdesc[HME_NTXDESC];
95
96 bus_dmamap_t rb_spare_dmamap;
97};
98
99struct hme_softc {
100 struct arpcom sc_arpcom;
101 struct ifmedia sc_ifmedia;
102 device_t sc_dev;
103 device_t sc_miibus;

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129 int sc_phys[2]; /* MII instance -> PHY map */
130
131 int sc_pci; /* XXXXX -- PCI buses are LE. */
132
133 /* Ring descriptor */
134 struct hme_ring sc_rb;
135
136 int sc_debug;
137
138 /* Special hardware hooks */
139 void (*sc_hwreset)(struct hme_softc *);
140 void (*sc_hwinit)(struct hme_softc *);
141};
142
143extern devclass_t hme_devclass;
144
145int hme_config(struct hme_softc *);
146void hme_intr(void *);
147
148/* MII methods & callbacks */
149int hme_mii_readreg(device_t, int, int);
150int hme_mii_writereg(device_t, int, int, int);
151void hme_mii_statchg(device_t);