1 /* $OpenBSD: lebuffer.c,v 1.5 2002/03/14 01:26:43 millert Exp $ */
2 /* $NetBSD: lebuffer.c,v 1.3 1997/05/24 20:16:28 pk Exp $ */
3
4 /*
5 * Copyright (c) 1996 Paul Kranenburg. 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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Peter Galbavy.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/types.h>
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/errno.h>
38 #include <sys/ioctl.h>
39 #include <sys/device.h>
40 #include <sys/malloc.h>
41 #include <sys/buf.h>
42 #include <sys/proc.h>
43 #include <sys/user.h>
44
45 #include <sparc/autoconf.h>
46 #include <sparc/cpu.h>
47
48 #include <sparc/dev/sbusvar.h>
49 #include <sparc/dev/lebuffervar.h>
50 #include <sparc/dev/dmareg.h>/*XXX*/
51
52 int lebufprint(void *, const char *);
53 int lebufmatch(struct device *, void *, void *);
54 void lebufattach(struct device *, struct device *, void *);
55
56 struct cfattach lebuffer_ca = {
57 sizeof(struct lebuf_softc), lebufmatch, lebufattach
58 };
59
60 struct cfdriver lebuffer_cd = {
61 NULL, "lebuffer", DV_DULL
62 };
63
64 int
lebufprint(aux,name)65 lebufprint(aux, name)
66 void *aux;
67 const char *name;
68 {
69 register struct confargs *ca = aux;
70
71 if (name)
72 printf("[%s at %s]", ca->ca_ra.ra_name, name);
73 printf(" offset 0x%x", ca->ca_offset);
74 return (UNCONF);
75 }
76
77 /*
78 * Match a lebuffer card in a slot capable of dma.
79 */
80 int
lebufmatch(parent,vcf,aux)81 lebufmatch(parent, vcf, aux)
82 struct device *parent;
83 void *vcf, *aux;
84 {
85 struct cfdata *cf = vcf;
86 struct confargs *ca = aux;
87 register struct romaux *ra = &ca->ca_ra;
88
89 if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
90 return(0);
91
92 if (!sbus_testdma((struct sbus_softc *)parent, ca))
93 return(0);
94
95 return (1);
96 }
97
98 /*
99 * Attach all the sub-devices we can find
100 */
101 void
lebufattach(parent,self,aux)102 lebufattach(parent, self, aux)
103 struct device *parent, *self;
104 void *aux;
105 {
106 #if defined(SUN4C) || defined(SUN4M)
107 register struct confargs *ca = aux;
108 struct lebuf_softc *sc = (void *)self;
109 int node;
110 struct confargs oca;
111 char *name;
112 int sbusburst;
113
114 if (ca->ca_ra.ra_vaddr == NULL || ca->ca_ra.ra_nvaddrs == 0)
115 ca->ca_ra.ra_vaddr =
116 mapiodev(ca->ca_ra.ra_reg, 0, ca->ca_ra.ra_len);
117
118 /*
119 * This device's "register space" is just a buffer where the
120 * Lance ring-buffers can be stored. Note the buffer's location
121 * and size, so the `le' driver can pick them up.
122 */
123 sc->sc_buffer = (caddr_t)ca->ca_ra.ra_vaddr;
124 sc->sc_bufsiz = ca->ca_ra.ra_len;
125
126 /*
127 * Get transfer burst size from PROM
128 */
129 sbusburst = ((struct sbus_softc *)parent)->sc_burst;
130 if (sbusburst == 0)
131 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
132
133 sc->sc_burst = getpropint(ca->ca_ra.ra_node, "burst-sizes", -1);
134 if (sc->sc_burst == -1)
135 /* take SBus burst sizes */
136 sc->sc_burst = sbusburst;
137
138 /* Clamp at parent's burst sizes */
139 sc->sc_burst &= sbusburst;
140
141 printf(": %dK memory\n", sc->sc_bufsiz / 1024);
142
143 node = sc->sc_node = ca->ca_ra.ra_node;
144
145 if (ca->ca_bustype == BUS_SBUS)
146 sbus_establish(&sc->sc_sd, &sc->sc_dev);
147
148 /* Propagate bootpath */
149 if (ca->ca_ra.ra_bp != NULL)
150 oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1;
151 else
152 oca.ca_ra.ra_bp = NULL;
153
154 /* search through children */
155 for (node = firstchild(node); node; node = nextsibling(node)) {
156 name = getpropstring(node, "name");
157 if (!romprop(&oca.ca_ra, name, node))
158 continue;
159
160 sbus_translate(parent, &oca);
161 oca.ca_bustype = BUS_SBUS;
162 (void) config_found(&sc->sc_dev, (void *)&oca, lebufprint);
163 }
164 #endif /* SUN4C || SUN4M */
165 }
166