1 /* $NetBSD: if_le_isapnp.c,v 1.37 2022/05/29 10:43:46 rin Exp $ */
2
3 /*-
4 * Copyright (c) 1997 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * Copyright (c) 1997 Jonathan Stone <jonathan@NetBSD.org> and
35 * Matthias Drochner. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by Jonathan Stone.
48 * 4. The name of the author may not be used to endorse or promote products
49 * derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: if_le_isapnp.c,v 1.37 2022/05/29 10:43:46 rin Exp $");
65
66 #include <sys/param.h>
67 #include <sys/systm.h>
68 #include <sys/mbuf.h>
69 #include <sys/socket.h>
70 #include <sys/ioctl.h>
71 #include <sys/errno.h>
72 #include <sys/syslog.h>
73 #include <sys/select.h>
74 #include <sys/device.h>
75
76 #include <net/if.h>
77 #include <net/if_dl.h>
78 #include <net/if_ether.h>
79 #include <net/if_media.h>
80
81 #include <sys/cpu.h>
82 #include <sys/bus.h>
83 #include <sys/intr.h>
84
85 #include <dev/isa/isavar.h>
86 #include <dev/isa/isadmavar.h>
87
88 #include <dev/isapnp/isapnpreg.h>
89 #include <dev/isapnp/isapnpvar.h>
90 #include <dev/isapnp/isapnpdevs.h>
91
92 #include <dev/ic/lancereg.h>
93 #include <dev/ic/lancevar.h>
94 #include <dev/ic/am7990reg.h>
95 #include <dev/ic/am7990var.h>
96
97 #define LE_ISAPNP_MEMSIZE 16384
98
99 #define PCNET_SAPROM 0x00
100 #define PCNET_RDP 0x10
101 #define PCNET_RAP 0x12
102
103 /*
104 * Ethernet software status per interface.
105 *
106 * Each interface is referenced by a network interface structure,
107 * ethercom.ec_if, which the routing code uses to locate the interface.
108 * This structure contains the output queue for the interface, its address, ...
109 */
110 struct le_isapnp_softc {
111 struct am7990_softc sc_am7990; /* glue to MI code */
112
113 void *sc_ih;
114 bus_space_tag_t sc_iot; /* space cookie */
115 bus_space_handle_t sc_ioh; /* bus space handle */
116 bus_dma_tag_t sc_dmat; /* bus dma tag */
117 bus_dmamap_t sc_dmam; /* bus dma map */
118 int sc_rap, sc_rdp; /* offsets to LANCE registers */
119 };
120
121 int le_isapnp_match(device_t, cfdata_t, void *);
122 void le_isapnp_attach(device_t, device_t, void *);
123
124 CFATTACH_DECL_NEW(le_isapnp, sizeof(struct le_isapnp_softc),
125 le_isapnp_match, le_isapnp_attach, NULL, NULL);
126
127 int le_isapnp_intredge(void *);
128 static void le_isapnp_wrcsr(struct lance_softc *, uint16_t, uint16_t);
129 static uint16_t le_isapnp_rdcsr(struct lance_softc *, uint16_t);
130
131 static void
le_isapnp_wrcsr(struct lance_softc * sc,uint16_t port,uint16_t val)132 le_isapnp_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
133 {
134 struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc;
135 bus_space_tag_t iot = lesc->sc_iot;
136 bus_space_handle_t ioh = lesc->sc_ioh;
137
138 bus_space_write_2(iot, ioh, lesc->sc_rap, port);
139 bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
140 }
141
142 static uint16_t
le_isapnp_rdcsr(struct lance_softc * sc,uint16_t port)143 le_isapnp_rdcsr(struct lance_softc *sc, uint16_t port)
144 {
145 struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc;
146 bus_space_tag_t iot = lesc->sc_iot;
147 bus_space_handle_t ioh = lesc->sc_ioh;
148 uint16_t val;
149
150 bus_space_write_2(iot, ioh, lesc->sc_rap, port);
151 val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
152 return (val);
153 }
154
155 int
le_isapnp_match(device_t parent,cfdata_t cf,void * aux)156 le_isapnp_match(device_t parent, cfdata_t cf, void *aux)
157 {
158 int pri, variant;
159
160 pri = isapnp_devmatch(aux, &isapnp_le_devinfo, &variant);
161 if (pri && variant > 0)
162 pri = 0;
163 return (pri);
164 }
165
166 void
le_isapnp_attach(device_t parent,device_t self,void * aux)167 le_isapnp_attach(device_t parent, device_t self, void *aux)
168 {
169 struct le_isapnp_softc *lesc = device_private(self);
170 struct lance_softc *sc = &lesc->sc_am7990.lsc;
171 struct isapnp_attach_args *ipa = aux;
172 bus_space_tag_t iot;
173 bus_space_handle_t ioh;
174 bus_dma_tag_t dmat;
175 bus_dma_segment_t seg;
176 int i, rseg, error;
177
178 sc->sc_dev = self;
179
180 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
181 aprint_error(": error in region allocation\n");
182 return;
183 }
184
185 lesc->sc_iot = iot = ipa->ipa_iot;
186 lesc->sc_ioh = ioh = ipa->ipa_io[0].h;
187 lesc->sc_dmat = dmat = ipa->ipa_dmat;
188
189 lesc->sc_rap = PCNET_RAP;
190 lesc->sc_rdp = PCNET_RDP;
191
192 /*
193 * Extract the physical MAC address from the ROM.
194 */
195 for (i = 0; i < sizeof(sc->sc_enaddr); i++)
196 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, PCNET_SAPROM + i);
197
198 /*
199 * Allocate a DMA area for the card.
200 */
201 if (bus_dmamem_alloc(dmat, LE_ISAPNP_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
202 &rseg, BUS_DMA_NOWAIT)) {
203 aprint_error(": couldn't allocate memory for card\n");
204 return;
205 }
206 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISAPNP_MEMSIZE,
207 (void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
208 aprint_error(": couldn't map memory for card\n");
209 goto bad_free;
210 }
211
212 /*
213 * Create and load the DMA map for the DMA area.
214 */
215 if (bus_dmamap_create(dmat, LE_ISAPNP_MEMSIZE, 1,
216 LE_ISAPNP_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
217 aprint_error(": couldn't create DMA map\n");
218 goto bad_unmap;
219 }
220 if (bus_dmamap_load(dmat, lesc->sc_dmam,
221 sc->sc_mem, LE_ISAPNP_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
222 aprint_error(": couldn't load DMA map\n");
223 goto bad_destroy;
224 }
225
226 sc->sc_conf3 = 0;
227 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
228 sc->sc_memsize = LE_ISAPNP_MEMSIZE;
229
230 sc->sc_copytodesc = lance_copytobuf_contig;
231 sc->sc_copyfromdesc = lance_copyfrombuf_contig;
232 sc->sc_copytobuf = lance_copytobuf_contig;
233 sc->sc_copyfrombuf = lance_copyfrombuf_contig;
234 sc->sc_zerobuf = lance_zerobuf_contig;
235
236 sc->sc_rdcsr = le_isapnp_rdcsr;
237 sc->sc_wrcsr = le_isapnp_wrcsr;
238 sc->sc_hwinit = NULL;
239
240 if (ipa->ipa_ndrq > 0) {
241 if ((error = isa_dmacascade(ipa->ipa_ic,
242 ipa->ipa_drq[0].num)) != 0) {
243 aprint_error(": unable to cascade DRQ, error = %d\n",
244 error);
245 goto bad_destroy;
246 }
247 }
248
249 lesc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
250 ipa->ipa_irq[0].type, IPL_NET, le_isapnp_intredge, sc);
251
252 aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
253
254 aprint_normal("%s", device_xname(self));
255 am7990_config(&lesc->sc_am7990);
256
257 return;
258
259 bad_destroy:
260 bus_dmamap_destroy(dmat, lesc->sc_dmam);
261 bad_unmap:
262 bus_dmamem_unmap(dmat, sc->sc_mem, LE_ISAPNP_MEMSIZE);
263 bad_free:
264 bus_dmamem_free(dmat, &seg, rseg);
265 }
266
267
268 /*
269 * Controller interrupt.
270 */
271 int
le_isapnp_intredge(void * arg)272 le_isapnp_intredge(void *arg)
273 {
274
275 if (am7990_intr(arg) == 0)
276 return (0);
277 for (;;)
278 if (am7990_intr(arg) == 0)
279 return (1);
280 }
281