Annotation of sys/arch/vax/uba/uba_cmi.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uba_cmi.c,v 1.3 2003/06/02 23:27:58 millert Exp $ */
2: /* $NetBSD: uba_cmi.c,v 1.2 1999/08/14 11:31:48 ragge Exp $ */
3: /*
4: * Copyright (c) 1996 Jonathan Stone.
5: * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
6: * Copyright (c) 1982, 1986 The Regents of the University of California.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: * @(#)uba.c 7.10 (Berkeley) 12/16/90
34: * @(#)autoconf.c 7.20 (Berkeley) 5/9/91
35: */
36:
37: #include <sys/param.h>
38: #include <sys/device.h>
39: #include <sys/systm.h>
40:
41: #define _VAX_BUS_DMA_PRIVATE
42: #include <machine/bus.h>
43: #include <machine/mtpr.h>
44: #include <machine/nexus.h>
45: #include <machine/cpu.h>
46: #include <machine/sgmap.h>
47:
48: #include <arch/vax/qbus/ubavar.h>
49:
50: #include <arch/vax/uba/uba_common.h>
51:
52: /* Some CMI-specific defines */
53: #define UBASIZE ((UBAPAGES + UBAIOPAGES) * VAX_NBPG)
54: #define UMEM750(i) (0xfc0000 - (i) * UBASIZE)
55: #define UIOPAGE(x) (UMEM750(x) + (UBAPAGES * VAX_NBPG))
56:
57: /*
58: * The DW780 and DW750 are quite similar to their function from
59: * a programmers point of view. Differencies are number of BDP's
60: * and bus status/command registers, the latter are (partly) IPR's
61: * on 750.
62: */
63: static int dw750_match(struct device *, struct cfdata *, void *);
64: static void dw750_attach(struct device *, struct device *, void *);
65: static void dw750_init(struct uba_softc*);
66: #ifdef notyet
67: static void dw750_purge(struct uba_softc *, int);
68: #endif
69:
70: struct cfattach uba_cmi_ca = {
71: sizeof(struct uba_vsoftc), dw750_match, dw750_attach
72: };
73:
74: extern struct vax_bus_space vax_mem_bus_space;
75:
76: int
77: dw750_match(parent, cf, aux)
78: struct device *parent;
79: struct cfdata *cf;
80: void *aux;
81: {
82: struct sbi_attach_args *sa = (struct sbi_attach_args *)aux;
83:
84: if ((cf->cf_loc[0] != sa->nexnum) && (cf->cf_loc[0] > -1 ))
85: return 0;
86: /*
87: * The uba type is actually only telling where the uba
88: * space is in nexus space.
89: */
90: if ((sa->type & ~3) != NEX_UBA0)
91: return 0;
92:
93: return 1;
94: }
95:
96: void
97: dw750_attach(parent, self, aux)
98: struct device *parent, *self;
99: void *aux;
100: {
101: struct uba_vsoftc *sc = (void *)self;
102: struct sbi_attach_args *sa = aux;
103: struct uba_regs *uh_uba = (void *)sa->nexaddr;
104: int ubaddr = sa->nexinfo & 1;
105:
106: printf(": DW750\n");
107: /*
108: * Fill in bus specific data.
109: */
110: sc->uv_sc.uh_ubainit = dw750_init;
111: #ifdef notyet
112: sc->uv_sc.uh_ubapurge = dw750_purge;
113: #endif
114: sc->uv_sc.uh_iot = &vax_mem_bus_space;
115: sc->uv_sc.uh_dmat = &sc->uv_dmat;
116:
117: /*
118: * Fill in variables used by the sgmap system.
119: */
120: sc->uv_size = UBASIZE; /* Size in bytes of Qbus space */
121: sc->uv_addr = (paddr_t)uh_uba->uba_map; /* Map regs physical address */
122:
123: uba_dma_init(sc);
124: uba_attach(&sc->uv_sc, UIOPAGE(ubaddr));
125: }
126:
127: void
128: dw750_init(sc)
129: struct uba_softc *sc;
130: {
131: mtpr(0, PR_IUR);
132: DELAY(500000);
133: }
134:
135: #ifdef notyet
136: void
137: dw750_purge(sc, bdp)
138: struct uba_softc *sc;
139: int bdp;
140: {
141: sc->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE | UBADPR_NXM | UBADPR_UCE;
142: }
143: #endif
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