1 /* $NetBSD: fdc_sableio.c,v 1.17 2021/05/07 16:58:34 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
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 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
33
34 __KERNEL_RCSID(0, "$NetBSD: fdc_sableio.c,v 1.17 2021/05/07 16:58:34 thorpej Exp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/callout.h>
39 #include <sys/device.h>
40 #include <sys/buf.h>
41
42 #include <sys/bus.h>
43 #include <machine/intr.h>
44
45 #include <dev/isa/isavar.h>
46 #include <dev/isa/isadmavar.h>
47
48 #include <dev/isa/fdreg.h>
49 #include <dev/isa/fdcvar.h>
50
51 #include <dev/pci/pcivar.h>
52
53 #include <alpha/sableio/sableiovar.h>
54
55 static int fdc_sableio_match(device_t, cfdata_t, void *);
56 static void fdc_sableio_attach(device_t, device_t, void *);
57
58 struct fdc_sableio_softc {
59 struct fdc_softc sc_fdc; /* real "fdc" softc */
60
61 bus_space_handle_t sc_baseioh; /* base I/O handle */
62 };
63
64 CFATTACH_DECL_NEW(fdc_sableio, sizeof(struct fdc_sableio_softc),
65 fdc_sableio_match, fdc_sableio_attach, NULL, NULL);
66
67 static int
fdc_sableio_match(device_t parent,cfdata_t match,void * aux)68 fdc_sableio_match(device_t parent, cfdata_t match, void *aux)
69 {
70 struct sableio_attach_args *sa = aux;
71
72 /* Always present. */
73 if (strcmp(sa->sa_name, match->cf_name) == 0)
74 return (1);
75
76 return (0);
77 }
78
79 static void
fdc_sableio_attach(device_t parent,device_t self,void * aux)80 fdc_sableio_attach(device_t parent, device_t self, void *aux)
81 {
82 struct fdc_sableio_softc *sfdc = device_private(self);
83 struct fdc_softc *fdc = &sfdc->sc_fdc;
84 struct sableio_attach_args *sa = aux;
85 const char *intrstr;
86 char buf[PCI_INTRSTR_LEN];
87 pci_intr_handle_t ih;
88
89 aprint_normal("\n");
90
91 fdc->sc_dev = self;
92 fdc->sc_iot = sa->sa_iot;
93 fdc->sc_ic = sa->sa_ic;
94 fdc->sc_drq = sa->sa_drq;
95
96 if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr, 6 /* FDC_NPORT */, 0,
97 &sfdc->sc_baseioh)) {
98 aprint_error_dev(self, "unable to map I/O space\n");
99 return;
100 }
101
102 if (bus_space_subregion(fdc->sc_iot, sfdc->sc_baseioh, 2, 4,
103 &fdc->sc_ioh)) {
104 aprint_error_dev(self, "unable to subregion I/O space\n");
105 return;
106 }
107
108 if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr + fdctl + 2, 1, 0,
109 &fdc->sc_fdctlioh)) {
110 aprint_error_dev(self, "unable to map CTL I/O space\n");
111 return;
112 }
113
114 alpha_pci_intr_handle_init(&ih, sa->sa_sableirq[0], 0);
115
116 intrstr = pci_intr_string(sa->sa_pc, ih, buf, sizeof(buf));
117 fdc->sc_ih = pci_intr_establish(sa->sa_pc, ih, IPL_BIO,
118 fdcintr, fdc);
119 if (fdc->sc_ih == NULL) {
120 aprint_error_dev(self, "unable to establish interrupt");
121 if (intrstr != NULL)
122 aprint_error(" at %s", intrstr);
123 aprint_error("\n");
124 return;
125 }
126 aprint_normal_dev(self, "interrupting at %s\n", intrstr);
127
128 fdcattach(fdc);
129 }
130