Annotation of sys/arch/mvme88k/dev/if_le.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: if_le.c,v 1.15 2006/05/08 14:36:10 miod Exp $ */
2:
3: /*-
4: * Copyright (c) 1982, 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the University nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: *
31: * @(#)if_le.c 8.2 (Berkeley) 10/30/93
32: */
33:
34: #include <sys/param.h>
35: #include <sys/systm.h>
36: #include <sys/mbuf.h>
37: #include <sys/syslog.h>
38: #include <sys/socket.h>
39: #include <sys/device.h>
40: #include <sys/malloc.h>
41:
42: #include <net/if.h>
43:
44: #ifdef INET
45: #include <netinet/in.h>
46: #include <netinet/if_ether.h>
47: #endif
48:
49: #include <net/if_media.h>
50:
51: #include <machine/autoconf.h>
52: #include <machine/cpu.h>
53:
54: #include <dev/ic/am7990reg.h>
55: #include <dev/ic/am7990var.h>
56:
57: #include <mvme88k/dev/if_lereg.h>
58: #include <mvme88k/dev/if_levar.h>
59: #include <mvme88k/dev/vme.h>
60:
61: /* autoconfiguration driver */
62: void leattach(struct device *, struct device *, void *);
63: int lematch(struct device *, void *, void *);
64:
65: struct cfattach le_ca = {
66: sizeof(struct le_softc), lematch, leattach
67: };
68:
69: void vlewrcsr(struct am7990_softc *, u_int16_t, u_int16_t);
70: u_int16_t vlerdcsr(struct am7990_softc *, u_int16_t);
71: void nvram_cmd(struct am7990_softc *, u_char, u_short);
72: u_int16_t nvram_read(struct am7990_softc *, u_char);
73: void vleetheraddr(struct am7990_softc *);
74: void vleinit(struct am7990_softc *);
75: void vlereset(struct am7990_softc *);
76: int vle_intr(void *);
77:
78: /* send command to the nvram controller */
79: void
80: nvram_cmd(sc, cmd, addr)
81: struct am7990_softc *sc;
82: u_char cmd;
83: u_short addr;
84: {
85: struct vlereg1 *reg1 = (struct vlereg1 *)((struct le_softc *)sc)->sc_r1;
86: int i;
87:
88: for (i = 0; i < 8; i++) {
89: reg1->ler1_ear = ((cmd | (addr << 1)) >> i);
90: CDELAY;
91: }
92: }
93:
94: /* read nvram one bit at a time */
95: u_int16_t
96: nvram_read(sc, nvram_addr)
97: struct am7990_softc *sc;
98: u_char nvram_addr;
99: {
100: u_short val = 0, mask = 0x04000;
101: u_int16_t wbit;
102: struct vlereg1 *reg1 = (struct vlereg1 *)((struct le_softc *)sc)->sc_r1;
103:
104: ((struct le_softc *)sc)->sc_csr = 0x4f;
105: ENABLE_NVRAM;
106: nvram_cmd(sc, NVRAM_RCL, 0);
107: DISABLE_NVRAM;
108: CDELAY;
109: ENABLE_NVRAM;
110: nvram_cmd(sc, NVRAM_READ, nvram_addr);
111: for (wbit = 0; wbit < 15; wbit++) {
112: if (reg1->ler1_ear & 0x01)
113: val |= mask;
114: else
115: val &= ~mask;
116: mask = mask >> 1;
117: CDELAY;
118: }
119: if (reg1->ler1_ear & 0x01)
120: val |= 0x8000;
121: else
122: val &= 0x7fff;
123: CDELAY;
124: DISABLE_NVRAM;
125: return (val);
126: }
127:
128: void
129: vleetheraddr(sc)
130: struct am7990_softc *sc;
131: {
132: u_char *cp = sc->sc_arpcom.ac_enaddr;
133: u_int16_t ival[3];
134: int i;
135:
136: for (i = 0; i < 3; i++) {
137: ival[i] = nvram_read(sc, i);
138: }
139: memcpy(cp, &ival[0], 6);
140: }
141:
142: void
143: vlewrcsr(sc, port, val)
144: struct am7990_softc *sc;
145: u_int16_t port, val;
146: {
147: struct vlereg1 *ler1 = (struct vlereg1 *)((struct le_softc *)sc)->sc_r1;
148:
149: ler1->ler1_rap = port;
150: ler1->ler1_rdp = val;
151: }
152:
153: u_int16_t
154: vlerdcsr(sc, port)
155: struct am7990_softc *sc;
156: u_int16_t port;
157: {
158: struct vlereg1 *ler1 = (struct vlereg1 *)((struct le_softc *)sc)->sc_r1;
159: u_int16_t val;
160:
161: ler1->ler1_rap = port;
162: val = ler1->ler1_rdp;
163: return (val);
164: }
165:
166: /* init MVME376, set ipl and vec */
167: void
168: vleinit(sc)
169: struct am7990_softc *sc;
170: {
171: struct vlereg1 *reg1 = (struct vlereg1 *)((struct le_softc *)sc)->sc_r1;
172: u_char vec = ((struct le_softc *)sc)->sc_vec;
173: u_char ipl = ((struct le_softc *)sc)->sc_ipl;
174:
175: ((struct le_softc *)sc)->sc_csr = 0x4f;
176: WRITE_CSR_AND(ipl);
177: SET_VEC(vec);
178: return;
179: }
180:
181: /* MVME376 hardware reset */
182: void
183: vlereset(sc)
184: struct am7990_softc *sc;
185: {
186: struct vlereg1 *reg1 = (struct vlereg1 *)((struct le_softc *)sc)->sc_r1;
187:
188: RESET_HW;
189: #ifdef LEDEBUG
190: if (sc->sc_debug) {
191: printf("%s: hardware reset\n", sc->sc_dev.dv_xname);
192: }
193: #endif
194: SYSFAIL_CL;
195: }
196:
197: int
198: vle_intr(sc)
199: void *sc;
200: {
201: struct le_softc *lesc = (struct le_softc *)sc;
202: struct vlereg1 *reg1 = (struct vlereg1 *)lesc->sc_r1;
203: int rc;
204:
205: rc = am7990_intr(sc);
206: ENABLE_INTR;
207: return (rc);
208: }
209:
210: int
211: lematch(parent, vcf, args)
212: struct device *parent;
213: void *vcf, *args;
214: {
215: struct confargs *ca = args;
216: bus_space_tag_t iot = ca->ca_iot;
217: bus_space_handle_t ioh;
218: int rc;
219:
220: if (bus_space_map(iot, ca->ca_paddr, PAGE_SIZE, 0, &ioh) != 0)
221: return 0;
222: rc = badaddr((vaddr_t)bus_space_vaddr(iot, ioh), 2);
223: bus_space_unmap(iot, ioh, PAGE_SIZE);
224:
225: return rc == 0;
226: }
227:
228: /*
229: * Interface exists: make available by filling in network interface
230: * record. System will initialize the interface when it is ready
231: * to accept packets.
232: */
233: void
234: leattach(parent, self, aux)
235: struct device *parent;
236: struct device *self;
237: void *aux;
238: {
239: struct le_softc *lesc = (struct le_softc *)self;
240: struct am7990_softc *sc = &lesc->sc_am7990;
241: struct confargs *ca = aux;
242: paddr_t paddr;
243: int card;
244: bus_space_tag_t iot = ca->ca_iot;
245: bus_space_handle_t ioh, memh;
246:
247: if (ca->ca_vec < 0) {
248: printf(": no more interrupts!\n");
249: return;
250: }
251: if (ca->ca_ipl < 0)
252: ca->ca_ipl = IPL_NET;
253:
254: /*
255: * get the first available etherbuf. MVME376 uses its own dual-ported
256: * RAM for etherbuf. It is set by dip switches on board. We support
257: * the six Motorola address locations, however, the board can be set up
258: * at any other address.
259: * XXX These physical addresses should be mapped in extio!!!
260: */
261: switch (ca->ca_paddr) {
262: case 0xffff1200:
263: card = 0;
264: break;
265: case 0xffff1400:
266: card = 1;
267: break;
268: case 0xffff1600:
269: card = 2;
270: break;
271: case 0xffff5400:
272: card = 3;
273: break;
274: case 0xffff5600:
275: card = 4;
276: break;
277: case 0xffffa400:
278: card = 5;
279: break;
280: default:
281: printf(": unsupported address\n");
282: return;
283: }
284:
285: if (bus_space_map(iot, ca->ca_paddr, PAGE_SIZE, 0, &ioh) != 0) {
286: printf(": can't map registers!\n");
287: return;
288: }
289:
290: paddr = VLEMEMBASE - (card * VLEMEMSIZE);
291: if (bus_space_map(iot, paddr, VLEMEMSIZE, BUS_SPACE_MAP_LINEAR,
292: &memh) != 0) {
293: printf(": can't map buffers!\n");
294: bus_space_unmap(iot, ioh, PAGE_SIZE);
295: return;
296: }
297: lesc->sc_r1 = (void *)bus_space_vaddr(iot, ioh);
298: lesc->sc_ipl = ca->ca_ipl;
299: lesc->sc_vec = ca->ca_vec;
300:
301: sc->sc_mem = (void *)bus_space_vaddr(iot, memh);
302: sc->sc_memsize = VLEMEMSIZE;
303: sc->sc_addr = paddr & 0x00ffffff;
304: sc->sc_conf3 = LE_C3_BSWP;
305: sc->sc_hwreset = vlereset;
306: sc->sc_rdcsr = vlerdcsr;
307: sc->sc_wrcsr = vlewrcsr;
308: sc->sc_hwinit = vleinit;
309: sc->sc_copytodesc = am7990_copytobuf_contig;
310: sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
311: sc->sc_copytobuf = am7990_copytobuf_contig;
312: sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
313: sc->sc_zerobuf = am7990_zerobuf_contig;
314:
315: /* get Ethernet address */
316: vleetheraddr(sc);
317:
318: am7990_config(sc);
319:
320: /* connect the interrupt */
321: lesc->sc_ih.ih_fn = vle_intr;
322: lesc->sc_ih.ih_arg = sc;
323: lesc->sc_ih.ih_wantframe = 0;
324: lesc->sc_ih.ih_ipl = ca->ca_ipl;
325: vmeintr_establish(ca->ca_vec, &lesc->sc_ih, self->dv_xname);
326: }
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