Annotation of sys/dev/sbus/if_le_lebuffer.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: if_le_lebuffer.c,v 1.8 2007/05/31 17:23:14 sobrado Exp $ */
2: /* $NetBSD: if_le_lebuffer.c,v 1.10 2002/03/11 16:00:56 pk Exp $ */
3:
4: /*-
5: * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
10: * Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the NetBSD
23: * Foundation, Inc. and its contributors.
24: * 4. Neither the name of The NetBSD Foundation nor the names of its
25: * contributors may be used to endorse or promote products derived
26: * from this software without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38: * POSSIBILITY OF SUCH DAMAGE.
39: */
40:
41: #include "bpfilter.h"
42:
43: #include <sys/cdefs.h>
44: #include <sys/param.h>
45: #include <sys/systm.h>
46: #include <sys/mbuf.h>
47: #include <sys/syslog.h>
48: #include <sys/socket.h>
49: #include <sys/device.h>
50: #include <sys/malloc.h>
51:
52: #include <net/if.h>
53: #include <net/if_media.h>
54:
55: #ifdef INET
56: #include <netinet/in.h>
57: #include <netinet/if_ether.h>
58: #endif
59:
60: #include <machine/bus.h>
61: #include <machine/intr.h>
62: #include <machine/autoconf.h>
63:
64: #include <dev/sbus/sbusvar.h>
65: #include <dev/sbus/lebuffervar.h>
66:
67: #include <dev/ic/am7990reg.h>
68: #include <dev/ic/am7990var.h>
69:
70: /*
71: * LANCE registers.
72: */
73: #define LEREG1_RDP 0 /* Register Data port */
74: #define LEREG1_RAP 2 /* Register Address port */
75:
76: struct le_softc {
77: struct am7990_softc sc_am7990; /* glue to MI code */
78: bus_space_tag_t sc_bustag;
79: bus_dma_tag_t sc_dmatag;
80: bus_space_handle_t sc_reg; /* LANCE registers */
81: };
82:
83:
84: int lematch_lebuffer(struct device *, void *, void *);
85: void leattach_lebuffer(struct device *, struct device *, void *);
86:
87: struct cfattach le_lebuffer_ca = {
88: sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer
89: };
90:
91: extern struct cfdriver le_cd;
92:
93: struct cfdriver lebuffer_cd = {
94: NULL, "lebuffer", DV_DULL
95: };
96:
97: void le_lebuffer_wrcsr(struct am7990_softc *, u_int16_t, u_int16_t);
98: u_int16_t le_lebuffer_rdcsr(struct am7990_softc *, u_int16_t);
99:
100: void
101: le_lebuffer_wrcsr(struct am7990_softc *sc, u_int16_t port, u_int16_t val)
102: {
103: struct le_softc *lesc = (struct le_softc *)sc;
104:
105: bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
106: bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2,
107: BUS_SPACE_BARRIER_WRITE);
108: bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
109: bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, 2,
110: BUS_SPACE_BARRIER_WRITE);
111:
112: #if defined(SUN4M)
113: /*
114: * We need to flush the SBus->MBus write buffers. This can most
115: * easily be accomplished by reading back the register that we
116: * just wrote (thanks to Chris Torek for this solution).
117: */
118: if (CPU_ISSUN4M) {
119: volatile u_int16_t discard;
120: discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg,
121: LEREG1_RDP);
122: }
123: #endif
124: }
125:
126: u_int16_t
127: le_lebuffer_rdcsr(struct am7990_softc *sc, u_int16_t port)
128: {
129: struct le_softc *lesc = (struct le_softc *)sc;
130:
131: bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
132: bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2,
133: BUS_SPACE_BARRIER_WRITE);
134: return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
135: }
136:
137: int
138: lematch_lebuffer(struct device *parent, void *vcf, void *aux)
139: {
140: struct sbus_attach_args *sa = aux;
141: struct cfdata *cf = vcf;
142:
143: return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
144: }
145:
146:
147: void
148: leattach_lebuffer(struct device *parent, struct device *self, void *aux)
149: {
150: struct sbus_attach_args *sa = aux;
151: struct le_softc *lesc = (struct le_softc *)self;
152: struct am7990_softc *sc = &lesc->sc_am7990;
153: struct lebuf_softc *lebuf = (struct lebuf_softc *)parent;
154: /* XXX the following declarations should be elsewhere */
155: extern void myetheraddr(u_char *);
156:
157: lesc->sc_bustag = sa->sa_bustag;
158: lesc->sc_dmatag = sa->sa_dmatag;
159:
160: if (sbus_bus_map(sa->sa_bustag,
161: sa->sa_slot, sa->sa_offset, sa->sa_size,
162: 0, 0, &lesc->sc_reg)) {
163: printf(": cannot map registers\n");
164: return;
165: }
166:
167: sc->sc_mem = lebuf->sc_buffer;
168: sc->sc_memsize = lebuf->sc_bufsiz;
169: sc->sc_addr = 0; /* Lance view is offset by buffer location */
170: lebuf->attached = 1;
171:
172: /* That old black magic... */
173: sc->sc_conf3 = getpropint(sa->sa_node, "busmaster-regval",
174: LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
175:
176: myetheraddr(sc->sc_arpcom.ac_enaddr);
177:
178: sc->sc_copytodesc = am7990_copytobuf_contig;
179: sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
180: sc->sc_copytobuf = am7990_copytobuf_contig;
181: sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
182: sc->sc_zerobuf = am7990_zerobuf_contig;
183:
184: sc->sc_rdcsr = le_lebuffer_rdcsr;
185: sc->sc_wrcsr = le_lebuffer_wrcsr;
186:
187: am7990_config(&lesc->sc_am7990);
188:
189: /* Establish interrupt handler */
190: if (sa->sa_nintr != 0)
191: (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri,
192: IPL_NET, 0, am7990_intr, sc, self->dv_xname);
193: }
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