Line data Source code
1 : /* $OpenBSD: wbsio.c,v 1.10 2015/03/14 03:38:47 jsg Exp $ */
2 : /*
3 : * Copyright (c) 2008 Mark Kettenis <kettenis@openbsd.org>
4 : *
5 : * Permission to use, copy, modify, and distribute this software for any
6 : * purpose with or without fee is hereby granted, provided that the above
7 : * copyright notice and this permission notice appear in all copies.
8 : *
9 : * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 : * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 : * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 : * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 : * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 : * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 : * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 : */
17 :
18 : /*
19 : * Winbond LPC Super I/O driver.
20 : */
21 :
22 : #include <sys/param.h>
23 : #include <sys/device.h>
24 : #include <sys/kernel.h>
25 : #include <sys/systm.h>
26 :
27 : #include <machine/bus.h>
28 :
29 : #include <dev/isa/isavar.h>
30 : #include <dev/isa/wbsioreg.h>
31 :
32 : #ifdef WBSIO_DEBUG
33 : #define DPRINTF(x) printf x
34 : #else
35 : #define DPRINTF(x)
36 : #endif
37 :
38 : struct wbsio_softc {
39 : struct device sc_dev;
40 :
41 : bus_space_tag_t sc_iot;
42 : bus_space_handle_t sc_ioh;
43 : };
44 :
45 : int wbsio_probe(struct device *, void *, void *);
46 : void wbsio_attach(struct device *, struct device *, void *);
47 : int wbsio_print(void *, const char *);
48 :
49 : struct cfattach wbsio_ca = {
50 : sizeof(struct wbsio_softc),
51 : wbsio_probe,
52 : wbsio_attach
53 : };
54 :
55 : struct cfdriver wbsio_cd = {
56 : NULL, "wbsio", DV_DULL
57 : };
58 :
59 : static __inline void
60 0 : wbsio_conf_enable(bus_space_tag_t iot, bus_space_handle_t ioh)
61 : {
62 0 : bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC);
63 0 : bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC);
64 0 : }
65 :
66 : static __inline void
67 0 : wbsio_conf_disable(bus_space_tag_t iot, bus_space_handle_t ioh)
68 : {
69 0 : bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_DS_MAGIC);
70 0 : }
71 :
72 : static __inline u_int8_t
73 0 : wbsio_conf_read(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index)
74 : {
75 0 : bus_space_write_1(iot, ioh, WBSIO_INDEX, index);
76 0 : return (bus_space_read_1(iot, ioh, WBSIO_DATA));
77 : }
78 :
79 : static __inline void
80 0 : wbsio_conf_write(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index,
81 : u_int8_t data)
82 : {
83 0 : bus_space_write_1(iot, ioh, WBSIO_INDEX, index);
84 0 : bus_space_write_1(iot, ioh, WBSIO_DATA, data);
85 0 : }
86 :
87 : int
88 0 : wbsio_probe(struct device *parent, void *match, void *aux)
89 : {
90 0 : struct isa_attach_args *ia = aux;
91 : bus_space_tag_t iot;
92 0 : bus_space_handle_t ioh;
93 : u_int8_t reg;
94 :
95 : /* Match by device ID */
96 0 : iot = ia->ia_iot;
97 0 : if (bus_space_map(iot, ia->ipa_io[0].base, WBSIO_IOSIZE, 0, &ioh))
98 0 : return (0);
99 0 : wbsio_conf_enable(iot, ioh);
100 0 : reg = wbsio_conf_read(iot, ioh, WBSIO_ID);
101 : DPRINTF(("wbsio_probe: id 0x%02x\n", reg));
102 0 : wbsio_conf_disable(iot, ioh);
103 0 : bus_space_unmap(iot, ioh, WBSIO_IOSIZE);
104 0 : switch (reg) {
105 : case WBSIO_ID_W83627HF:
106 : case WBSIO_ID_W83627THF:
107 : case WBSIO_ID_W83627EHF:
108 : case WBSIO_ID_W83627DHG:
109 : case WBSIO_ID_W83627DHGP:
110 : case WBSIO_ID_W83627UHG:
111 : case WBSIO_ID_W83637HF:
112 : case WBSIO_ID_W83697HF:
113 : case WBSIO_ID_NCT6776F:
114 : case WBSIO_ID_NCT5104D:
115 0 : ia->ipa_nio = 1;
116 0 : ia->ipa_io[0].length = WBSIO_IOSIZE;
117 0 : ia->ipa_nmem = 0;
118 0 : ia->ipa_nirq = 0;
119 0 : ia->ipa_ndrq = 0;
120 0 : return (1);
121 : }
122 :
123 0 : return (0);
124 0 : }
125 :
126 : void
127 0 : wbsio_attach(struct device *parent, struct device *self, void *aux)
128 : {
129 0 : struct wbsio_softc *sc = (void *)self;
130 0 : struct isa_attach_args *ia = aux;
131 0 : struct isa_attach_args nia;
132 : u_int8_t devid, reg, reg0, reg1;
133 : u_int16_t iobase;
134 :
135 : /* Map ISA I/O space */
136 0 : sc->sc_iot = ia->ia_iot;
137 0 : if (bus_space_map(sc->sc_iot, ia->ipa_io[0].base,
138 0 : WBSIO_IOSIZE, 0, &sc->sc_ioh)) {
139 0 : printf(": can't map i/o space\n");
140 0 : return;
141 : }
142 :
143 : /* Enter configuration mode */
144 0 : wbsio_conf_enable(sc->sc_iot, sc->sc_ioh);
145 :
146 : /* Read device ID */
147 0 : devid = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_ID);
148 0 : switch (devid) {
149 : case WBSIO_ID_W83627HF:
150 0 : printf(": W83627HF");
151 0 : break;
152 : case WBSIO_ID_W83627THF:
153 0 : printf(": W83627THF");
154 0 : break;
155 : case WBSIO_ID_W83627EHF:
156 0 : printf(": W83627EHF");
157 0 : break;
158 : case WBSIO_ID_W83627DHG:
159 0 : printf(": W83627DHG");
160 0 : break;
161 : case WBSIO_ID_W83627DHGP:
162 0 : printf(": W83627DHG-P");
163 0 : break;
164 : case WBSIO_ID_W83627UHG:
165 0 : printf(": W83627UHG");
166 0 : break;
167 : case WBSIO_ID_W83637HF:
168 0 : printf(": W83637HF");
169 0 : break;
170 : case WBSIO_ID_W83697HF:
171 0 : printf(": W83697HF");
172 0 : break;
173 : case WBSIO_ID_NCT6776F:
174 0 : printf(": NCT6776F");
175 0 : break;
176 : case WBSIO_ID_NCT5104D:
177 0 : printf(": NCT5104D");
178 0 : break;
179 : }
180 :
181 : /* Read device revision */
182 0 : reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_REV);
183 0 : printf(" rev 0x%02x", reg);
184 :
185 : /* Select HM logical device */
186 0 : wbsio_conf_write(sc->sc_iot, sc->sc_ioh, WBSIO_LDN, WBSIO_LDN_HM);
187 :
188 : /*
189 : * The address should be 8-byte aligned, but it seems some
190 : * BIOSes ignore this. They get away with it, because
191 : * Apparently the hardware simply ignores the lower three
192 : * bits. We do the same here.
193 : */
194 0 : reg0 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_LSB);
195 0 : reg1 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_MSB);
196 0 : iobase = (reg1 << 8) | (reg0 & ~0x7);
197 :
198 0 : printf("\n");
199 :
200 : /* Escape from configuration mode */
201 0 : wbsio_conf_disable(sc->sc_iot, sc->sc_ioh);
202 :
203 0 : if (iobase == 0)
204 0 : return;
205 :
206 0 : nia = *ia;
207 0 : nia.ia_iobase = iobase;
208 0 : nia.ia_aux = (void *)(u_long)devid; /* pass devid down to wb_match() */
209 :
210 0 : config_found(self, &nia, wbsio_print);
211 0 : }
212 :
213 : int
214 0 : wbsio_print(void *aux, const char *pnp)
215 : {
216 0 : struct isa_attach_args *ia = aux;
217 :
218 0 : if (pnp)
219 0 : printf("%s", pnp);
220 0 : if (ia->ia_iosize)
221 0 : printf(" port 0x%x", ia->ia_iobase);
222 0 : if (ia->ia_iosize > 1)
223 0 : printf("/%d", ia->ia_iosize);
224 0 : return (UNCONF);
225 : }
|
