1 /* $NetBSD: fdc_pcmcia.c,v 1.23 2021/12/08 20:50:02 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
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>
33 __KERNEL_RCSID(0, "$NetBSD: fdc_pcmcia.c,v 1.23 2021/12/08 20:50:02 andvar Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/conf.h>
38 #include <sys/device.h>
39 #include <sys/disk.h>
40 #include <sys/buf.h>
41
42 #include <sys/bus.h>
43 #include <sys/intr.h>
44
45 #include <dev/pcmcia/pcmciareg.h>
46 #include <dev/pcmcia/pcmciavar.h>
47 #include <dev/pcmcia/pcmciadevs.h>
48
49 #include <dev/isa/isavar.h>
50
51 #include <dev/isa/fdreg.h>
52 #include <dev/isa/fdcvar.h>
53
54 struct fdc_pcmcia_softc {
55 struct fdc_softc sc_fdc; /* real "fdc" softc */
56
57 struct pcmcia_function *sc_pf; /* our PCMCIA function */
58 };
59
60 int fdc_pcmcia_match(device_t, cfdata_t, void *);
61 int fdc_pcmcia_validate_config(struct pcmcia_config_entry *);
62 void fdc_pcmcia_attach(device_t, device_t, void *);
63 static void fdc_conf(struct fdc_softc *);
64
65 CFATTACH_DECL_NEW(fdc_pcmcia, sizeof(struct fdc_pcmcia_softc),
66 fdc_pcmcia_match, fdc_pcmcia_attach, NULL, NULL);
67
68 const struct pcmcia_product fdc_pcmcia_products[] = {
69 { PCMCIA_VENDOR_YEDATA, PCMCIA_PRODUCT_YEDATA_EXTERNAL_FDD,
70 PCMCIA_CIS_YEDATA_EXTERNAL_FDD },
71 };
72 const size_t fdc_pcmcia_nproducts =
73 sizeof(fdc_pcmcia_products) / sizeof(fdc_pcmcia_products[0]);
74
75 static void
fdc_conf(struct fdc_softc * fdc)76 fdc_conf(struct fdc_softc *fdc)
77 {
78 bus_space_tag_t iot = fdc->sc_iot;
79 bus_space_handle_t ioh = fdc->sc_ioh;
80 int n;
81
82 /* Figure out what we have */
83 if (out_fdc_cmd(iot, ioh, FDC_CMD_VERSION) == -1 ||
84 (n = fdcresult(fdc, 1)) != 1)
85 return;
86
87 /* Nec765 or equivalent */
88 if (FDC_ST0(fdc->sc_status[0]) == FDC_ST0_INVL)
89 return;
90
91 #if 0
92 /* ns8477 check */
93 if (out_fdc_cmd(iot, ioh, FDC_CMD_NSC) == -1 ||
94 (n = fdcresult(fdc, 1)) != 1) {
95 printf("NSC command failed\n");
96 return;
97 }
98 else
99 printf("Version %x\n", fdc->sc_status[0]);
100 #endif
101
102 if (out_fdc_cmd(iot, ioh, FDC_CMD_DUMPREG) == -1 ||
103 (n = fdcresult(fdc, -1)) == -1)
104 return;
105
106 /*
107 * Expect 10 bytes of status; one means that it did not
108 * understand the command
109 */
110 if (n == 1)
111 return;
112
113 /*
114 * Configure controller to use FIFO and 8 bytes of FIFO threshold
115 */
116 (void)out_fdc_cmd(iot, ioh, FDC_CMD_CONFIGURE);
117 (void)out_fdc(iot, ioh, 0x00); /* doc says 0 */
118 (void)out_fdc(iot, ioh, 8); /* FIFO is active low. */
119 (void)out_fdc(iot, ioh, fdc->sc_status[9]); /* same comp */
120 /* No result phase */
121
122 /* Lock this configuration */
123 if (out_fdc_cmd(iot, ioh, FDC_CMD_LOCK(FDC_CMD_FLAGS_LOCK)) == -1 ||
124 fdcresult(fdc, 1) != 1)
125 return;
126 }
127
128 int
fdc_pcmcia_match(device_t parent,cfdata_t match,void * aux)129 fdc_pcmcia_match(device_t parent, cfdata_t match, void *aux)
130 {
131 struct pcmcia_attach_args *pa = aux;
132
133 if (pcmcia_product_lookup(pa, fdc_pcmcia_products, fdc_pcmcia_nproducts,
134 sizeof(fdc_pcmcia_products[0]), NULL))
135 return (1);
136 return (0);
137 }
138
139 void
fdc_pcmcia_attach(device_t parent,device_t self,void * aux)140 fdc_pcmcia_attach(device_t parent, device_t self, void *aux)
141 {
142 struct fdc_pcmcia_softc *psc = device_private(self);
143 struct fdc_softc *fdc = &psc->sc_fdc;
144 struct pcmcia_attach_args *pa = aux;
145 struct pcmcia_config_entry *cfe;
146 struct pcmcia_function *pf = pa->pf;
147 struct fdc_attach_args fa;
148 int error;
149
150 fdc->sc_dev = self;
151 psc->sc_pf = pf;
152
153 error = pcmcia_function_configure(pf, fdc_pcmcia_validate_config);
154 if (error) {
155 aprint_error_dev(self, "configure failed, error=%d\n", error);
156 return;
157 }
158
159 cfe = pf->cfe;
160 fdc->sc_iot = cfe->iospace[0].handle.iot;
161 fdc->sc_iot = cfe->iospace[0].handle.ioh;
162
163 if (pcmcia_function_enable(pf))
164 goto fail;
165
166 fdc->sc_flags = FDC_HEADSETTLE;
167 fdc->sc_state = DEVIDLE;
168 TAILQ_INIT(&fdc->sc_drives);
169
170 if (!fdcfind(fdc->sc_iot, fdc->sc_ioh, 1))
171 aprint_error_dev(self, "couldn't find fdc\n");
172
173 fdc_conf(fdc);
174
175 /* Establish the interrupt handler. */
176 fdc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_BIO, fdchwintr, fdc);
177 if (!fdc->sc_ih)
178 goto fail;
179
180 /* physical limit: four drives per controller. */
181 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
182 if (fa.fa_drive < 2)
183 fa.fa_deftype = &fd_types[0];
184 else
185 fa.fa_deftype = NULL; /* unknown */
186 (void)config_found(self, (void *)&fa, fdprint, CFARGS_NONE);
187 }
188
189 return;
190
191 fail:
192 pcmcia_function_unconfigure(pf);
193 }
194