1 /* $NetBSD: if_le_vsbus.c,v 1.29 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_vsbus.c,v 1.29 2022/05/29 10:45:05 rin Exp $");
68
69 #include "opt_inet.h"
70
71 #include <sys/param.h>
72 #include <sys/bus.h>
73 #include <sys/cpu.h>
74 #include <sys/device.h>
75 #include <sys/socket.h>
76
77 #include <uvm/uvm_extern.h>
78
79 #include <net/if.h>
80 #include <net/if_ether.h>
81 #include <net/if_media.h>
82
83 #ifdef INET
84 #include <netinet/in.h>
85 #include <netinet/if_inarp.h>
86 #endif
87
88 #include <machine/sid.h>
89 #include <machine/scb.h>
90 #include <machine/vsbus.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 #include "ioconf.h"
98
99 struct le_softc {
100 struct am7990_softc sc_am7990; /* Must be first */
101 struct evcnt sc_intrcnt;
102 bus_dmamap_t sc_dm;
103 volatile uint16_t *sc_rap;
104 volatile uint16_t *sc_rdp;
105 };
106
107 static int le_vsbus_match(device_t, cfdata_t, void *);
108 static void le_vsbus_attach(device_t, device_t, void *);
109 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
110 static uint16_t lerdcsr(struct lance_softc *, uint16_t);
111
112 CFATTACH_DECL_NEW(le_vsbus, sizeof(struct le_softc),
113 le_vsbus_match, le_vsbus_attach, NULL, NULL);
114
115 void
lewrcsr(struct lance_softc * ls,uint16_t port,uint16_t val)116 lewrcsr(struct lance_softc *ls, uint16_t port, uint16_t val)
117 {
118 struct le_softc * const sc = (void *)ls;
119
120 *sc->sc_rap = port;
121 *sc->sc_rdp = val;
122 }
123
124 uint16_t
lerdcsr(struct lance_softc * ls,uint16_t port)125 lerdcsr(struct lance_softc *ls, uint16_t port)
126 {
127 struct le_softc * const sc = (void *)ls;
128
129 *sc->sc_rap = port;
130 return *sc->sc_rdp;
131 }
132
133 static int
le_vsbus_match(device_t parent,cfdata_t cf,void * aux)134 le_vsbus_match(device_t parent, cfdata_t cf, void *aux)
135 {
136 struct vsbus_attach_args * const va = aux;
137 volatile uint16_t *rdp, *rap;
138 struct leinit initblock;
139 bus_dmamap_t map;
140 int i;
141 int rv = 0;
142 int error;
143
144 if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_53)
145 return 0;
146
147 error = bus_dmamap_create(va->va_dmat, sizeof(initblock), 1,
148 sizeof(initblock), 0, BUS_DMA_NOWAIT, &map);
149 if (error) {
150 return 0;
151 }
152
153 error = bus_dmamap_load(va->va_dmat, map, &initblock,
154 sizeof(initblock), NULL, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
155 if (error) {
156 bus_dmamap_destroy(va->va_dmat, map);
157 return 0;
158 }
159
160 memset(&initblock, 0, sizeof(initblock));
161
162 rdp = (uint16_t *)va->va_addr;
163 rap = rdp + 2;
164
165 /* Make sure the chip is stopped. */
166 *rap = LE_CSR0;
167 *rdp = LE_C0_STOP;
168 DELAY(100);
169 *rap = LE_CSR1;
170 *rdp = map->dm_segs->ds_addr & 0xffff;
171 *rap = LE_CSR2;
172 *rdp = (map->dm_segs->ds_addr >> 16) & 0xffff;
173 *rap = LE_CSR0;
174 *rdp = LE_C0_INIT|LE_C0_INEA;
175
176 /* Wait for initialization to finish. */
177 for (i = 100; i >= 0; i--) {
178 DELAY(1000);
179 /* Should have interrupted by now */
180 if (*rdp & LE_C0_IDON)
181 rv = 1;
182 }
183 *rap = LE_CSR0;
184 *rdp = LE_C0_STOP;
185
186 bus_dmamap_unload(va->va_dmat, map);
187 bus_dmamap_destroy(va->va_dmat, map);
188 return rv;
189 }
190
191 static void
le_vsbus_attach(device_t parent,device_t self,void * aux)192 le_vsbus_attach(device_t parent, device_t self, void *aux)
193 {
194 struct vsbus_attach_args * const va = aux;
195 struct le_softc * const sc = device_private(self);
196 bus_dma_segment_t seg;
197 int *lance_addr;
198 int i, err, rseg;
199
200 sc->sc_am7990.lsc.sc_dev = self;
201 sc->sc_rdp = (uint16_t *) vax_map_physmem(NI_BASE, 1);
202 sc->sc_rap = sc->sc_rdp + 2;
203
204 /*
205 * MD functions.
206 */
207 sc->sc_am7990.lsc.sc_rdcsr = lerdcsr;
208 sc->sc_am7990.lsc.sc_wrcsr = lewrcsr;
209 sc->sc_am7990.lsc.sc_nocarrier = NULL;
210
211 scb_vecalloc(va->va_cvec, (void (*)(void *)) am7990_intr, sc,
212 SCB_ISTACK, &sc->sc_intrcnt);
213 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
214 device_xname(self), "intr");
215
216 /*
217 * Allocate a (DMA-safe) block for all descriptors and buffers.
218 */
219
220 #define ALLOCSIZ (64 * 1024)
221 err = bus_dmamem_alloc(va->va_dmat, ALLOCSIZ, PAGE_SIZE, 0,
222 &seg, 1, &rseg, BUS_DMA_NOWAIT);
223 if (err) {
224 aprint_error(": unable to alloc buffer block: err %d\n", err);
225 return;
226 }
227 err = bus_dmamem_map(va->va_dmat, &seg, rseg, ALLOCSIZ,
228 (void **)&sc->sc_am7990.lsc.sc_mem,
229 BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
230 if (err) {
231 aprint_error(": unable to map buffer block: err %d\n", err);
232 goto bad_free;
233 }
234 bus_dmamap_create(va->va_dmat, ALLOCSIZ, rseg, ALLOCSIZ,
235 0, BUS_DMA_NOWAIT, &sc->sc_dm);
236 if (err) {
237 aprint_error(": unable to create DMA map: err %d\n", err);
238 goto bad_unmap;
239 }
240 err = bus_dmamap_load(va->va_dmat, sc->sc_dm, sc->sc_am7990.lsc.sc_mem,
241 ALLOCSIZ, NULL, BUS_DMA_NOWAIT);
242 if (err) {
243 aprint_error(": unable to load DMA map: err %d\n", err);
244 goto bad_destroy;
245 }
246 aprint_normal(" buf 0x%lx-0x%lx", sc->sc_dm->dm_segs->ds_addr,
247 sc->sc_dm->dm_segs->ds_addr + sc->sc_dm->dm_segs->ds_len - 1);
248 sc->sc_am7990.lsc.sc_addr = sc->sc_dm->dm_segs->ds_addr & 0xffffff;
249 sc->sc_am7990.lsc.sc_memsize = sc->sc_dm->dm_segs->ds_len;
250
251 sc->sc_am7990.lsc.sc_copytodesc = lance_copytobuf_contig;
252 sc->sc_am7990.lsc.sc_copyfromdesc = lance_copyfrombuf_contig;
253 sc->sc_am7990.lsc.sc_copytobuf = lance_copytobuf_contig;
254 sc->sc_am7990.lsc.sc_copyfrombuf = lance_copyfrombuf_contig;
255 sc->sc_am7990.lsc.sc_zerobuf = lance_zerobuf_contig;
256
257 #ifdef LEDEBUG
258 sc->sc_am7990.lsc.sc_debug = 1;
259 #endif
260 /*
261 * Get the ethernet address out of rom
262 */
263 lance_addr = (int *)vax_map_physmem(NI_ADDR, 1);
264 for (i = 0; i < ETHER_ADDR_LEN; i++)
265 sc->sc_am7990.lsc.sc_enaddr[i] = (u_char)lance_addr[i];
266 vax_unmap_physmem((vaddr_t)lance_addr, 1);
267
268 memcpy(sc->sc_am7990.lsc.sc_ethercom.ec_if.if_xname, device_xname(self),
269 IFNAMSIZ);
270
271 /* Prettier printout */
272 aprint_normal("\n%s", device_xname(self));
273
274 am7990_config(&sc->sc_am7990);
275
276 return;
277
278 bad_destroy:
279 bus_dmamap_destroy(va->va_dmat, sc->sc_dm);
280 bad_unmap:
281 bus_dmamem_unmap(va->va_dmat, sc->sc_am7990.lsc.sc_mem, ALLOCSIZ);
282 bad_free:
283 bus_dmamem_free(va->va_dmat, &seg, rseg);
284 }
285