1 /* $NetBSD: if_le.c,v 1.37 2022/05/29 10:45:05 rin Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*-
33 * Copyright (c) 1992, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * This code is derived from software contributed to Berkeley by
37 * Ralph Campbell and Rick Macklem.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. Neither the name of the University nor the names of its contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 *
63 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
64 */
65
66 #include <sys/cdefs.h>
67 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.37 2022/05/29 10:45:05 rin Exp $");
68
69 #include "opt_inet.h"
70
71 #include <sys/param.h>
72 #include <sys/systm.h>
73 #include <sys/mbuf.h>
74 #include <sys/syslog.h>
75 #include <sys/socket.h>
76 #include <sys/device.h>
77
78 #include <uvm/uvm_extern.h>
79
80 #include <net/if.h>
81 #include <net/if_ether.h>
82 #include <net/if_media.h>
83
84 #ifdef INET
85 #include <netinet/in.h>
86 #include <netinet/if_inarp.h>
87 #endif
88
89 #include <machine/autoconf.h>
90 #include <machine/cpu.h>
91 #include <machine/bus.h>
92
93 #include <mvme68k/dev/pccreg.h>
94 #include <mvme68k/dev/pccvar.h>
95
96 #include <dev/ic/lancereg.h>
97 #include <dev/ic/lancevar.h>
98 #include <dev/ic/am7990reg.h>
99 #include <dev/ic/am7990var.h>
100
101 #include <mvme68k/dev/if_lereg.h>
102 #include <mvme68k/dev/if_levar.h>
103
104 #include "ioconf.h"
105
106 int le_pcc_match(device_t, cfdata_t, void *);
107 void le_pcc_attach(device_t, device_t, void *);
108
109 CFATTACH_DECL_NEW(le_pcc, sizeof(struct le_softc),
110 le_pcc_match, le_pcc_attach, NULL, NULL);
111
112 #if defined(_KERNEL_OPT)
113 #include "opt_ddb.h"
114 #endif
115
116 #ifdef DDB
117 #define hide
118 #else
119 #define hide static
120 #endif
121
122 hide void le_pcc_wrcsr(struct lance_softc *, uint16_t, uint16_t);
123 hide uint16_t le_pcc_rdcsr(struct lance_softc *, uint16_t);
124
125 hide void
le_pcc_wrcsr(struct lance_softc * sc,uint16_t port,uint16_t val)126 le_pcc_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
127 {
128 struct le_softc *lsc;
129
130 lsc = (struct le_softc *)sc;
131 bus_space_write_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RAP, port);
132 bus_space_write_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RDP, val);
133 }
134
135 hide uint16_t
le_pcc_rdcsr(struct lance_softc * sc,uint16_t port)136 le_pcc_rdcsr(struct lance_softc *sc, uint16_t port)
137 {
138 struct le_softc *lsc;
139
140 lsc = (struct le_softc *)sc;
141 bus_space_write_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RAP, port);
142 return bus_space_read_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RDP);
143 }
144
145 /* ARGSUSED */
146 int
le_pcc_match(device_t parent,cfdata_t cf,void * aux)147 le_pcc_match(device_t parent, cfdata_t cf, void *aux)
148 {
149 struct pcc_attach_args *pa = aux;
150
151 if (strcmp(pa->pa_name, le_cd.cd_name))
152 return 0;
153
154 pa->pa_ipl = cf->pcccf_ipl;
155 return 1;
156 }
157
158 /* ARGSUSED */
159 void
le_pcc_attach(device_t parent,device_t self,void * aux)160 le_pcc_attach(device_t parent, device_t self, void *aux)
161 {
162 struct le_softc *lsc;
163 struct lance_softc *sc;
164 struct pcc_attach_args *pa;
165 bus_dma_segment_t seg;
166 int rseg;
167
168 lsc = device_private(self);
169 sc = &lsc->sc_am7990.lsc;
170 sc->sc_dev = self;
171 pa = aux;
172
173 /* Map control registers. */
174 lsc->sc_bust = pa->pa_bust;
175 bus_space_map(pa->pa_bust, pa->pa_offset, 4, 0, &lsc->sc_bush);
176
177 /* Get contiguous DMA-able memory for the lance */
178 if (bus_dmamem_alloc(pa->pa_dmat, ether_data_buff_size, PAGE_SIZE, 0,
179 &seg, 1, &rseg,
180 BUS_DMA_NOWAIT | BUS_DMA_ONBOARD_RAM | BUS_DMA_24BIT)) {
181 aprint_error(": Failed to allocate ether buffer\n");
182 goto bad_unmap;
183 }
184 if (bus_dmamem_map(pa->pa_dmat, &seg, rseg, ether_data_buff_size,
185 (void **)&sc->sc_mem, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) {
186 aprint_error(": Failed to map ether buffer\n");
187 goto bad_free;
188 }
189 sc->sc_addr = seg.ds_addr;
190 sc->sc_memsize = ether_data_buff_size;
191 sc->sc_conf3 = LE_C3_BSWP;
192
193 memcpy(sc->sc_enaddr, mvme_ea, ETHER_ADDR_LEN);
194
195 sc->sc_copytodesc = lance_copytobuf_contig;
196 sc->sc_copyfromdesc = lance_copyfrombuf_contig;
197 sc->sc_copytobuf = lance_copytobuf_contig;
198 sc->sc_copyfrombuf = lance_copyfrombuf_contig;
199 sc->sc_zerobuf = lance_zerobuf_contig;
200
201 sc->sc_rdcsr = le_pcc_rdcsr;
202 sc->sc_wrcsr = le_pcc_wrcsr;
203 sc->sc_hwinit = NULL;
204
205 am7990_config(&lsc->sc_am7990);
206
207 evcnt_attach_dynamic(&lsc->sc_evcnt, EVCNT_TYPE_INTR,
208 pccintr_evcnt(pa->pa_ipl), "ether", device_xname(self));
209
210 pccintr_establish(PCCV_LE, am7990_intr, pa->pa_ipl, sc, &lsc->sc_evcnt);
211
212 pcc_reg_write(sys_pcc, PCCREG_LANCE_INTR_CTRL,
213 pa->pa_ipl | PCC_IENABLE);
214
215 return;
216
217 bad_free:
218 bus_dmamem_free(pa->pa_dmat, &seg, rseg);
219 bad_unmap:
220 bus_space_unmap(pa->pa_bust, lsc->sc_bush, 4);
221 }
222