Annotation of src/sys/dev/isa/wbsio.c, Revision 1.7
1.7 ! jakllsch 1: /* $NetBSD: wbsio.c,v 1.6 2012/01/17 16:34:52 jakllsch Exp $ */
1.1 cnst 2: /* $OpenBSD: wbsio.c,v 1.5 2009/03/29 21:53:52 sthen Exp $ */
3: /*
4: * Copyright (c) 2008 Mark Kettenis <kettenis@openbsd.org>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: /*
20: * Winbond LPC Super I/O driver.
21: */
22:
23: #include <sys/param.h>
24: #include <sys/device.h>
25: #include <sys/kernel.h>
1.6 jakllsch 26: #include <sys/module.h>
1.1 cnst 27: #include <sys/systm.h>
28:
1.3 dyoung 29: #include <sys/bus.h>
1.1 cnst 30:
31: #include <dev/isa/isareg.h>
32: #include <dev/isa/isavar.h>
33:
34: /* ISA bus registers */
35: #define WBSIO_INDEX 0x00 /* Configuration Index Register */
36: #define WBSIO_DATA 0x01 /* Configuration Data Register */
37:
38: #define WBSIO_IOSIZE 0x02 /* ISA I/O space size */
39:
40: #define WBSIO_CONF_EN_MAGIC 0x87 /* enable configuration mode */
41: #define WBSIO_CONF_DS_MAGIC 0xaa /* disable configuration mode */
42:
43: /* Configuration Space Registers */
44: #define WBSIO_LDN 0x07 /* Logical Device Number */
45: #define WBSIO_ID 0x20 /* Device ID */
46: #define WBSIO_REV 0x21 /* Device Revision */
47:
48: #define WBSIO_ID_W83627HF 0x52
49: #define WBSIO_ID_W83627THF 0x82
50: #define WBSIO_ID_W83627EHF 0x88
51: #define WBSIO_ID_W83627DHG 0xa0
52: #define WBSIO_ID_W83627SF 0x59
53: #define WBSIO_ID_W83637HF 0x70
1.2 cnst 54: #define WBSIO_ID_W83667HG 0xa5
1.1 cnst 55: #define WBSIO_ID_W83697HF 0x60
56:
57: /* Logical Device Number (LDN) Assignments */
58: #define WBSIO_LDN_HM 0x0b
59:
60: /* Hardware Monitor Control Registers (LDN B) */
61: #define WBSIO_HM_ADDR_MSB 0x60 /* Address [15:8] */
62: #define WBSIO_HM_ADDR_LSB 0x61 /* Address [7:0] */
63:
64: struct wbsio_softc {
65: struct device sc_dev;
66:
67: bus_space_tag_t sc_iot;
68: bus_space_handle_t sc_ioh;
69: };
70:
71: int wbsio_probe(device_t, cfdata_t, void *);
72: void wbsio_attach(device_t, device_t, void *);
1.5 jakllsch 73: int wbsio_detach(device_t, int);
74: void wbsio_childdet(device_t, device_t);
1.1 cnst 75: int wbsio_print(void *, const char *);
76:
1.5 jakllsch 77: CFATTACH_DECL2_NEW(wbsio, sizeof(struct wbsio_softc),
78: wbsio_probe, wbsio_attach, wbsio_detach, NULL, NULL, wbsio_childdet);
1.1 cnst 79:
80: static __inline void
81: wbsio_conf_enable(bus_space_tag_t iot, bus_space_handle_t ioh)
82: {
83: bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC);
84: bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC);
85: }
86:
87: static __inline void
88: wbsio_conf_disable(bus_space_tag_t iot, bus_space_handle_t ioh)
89: {
90: bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_DS_MAGIC);
91: }
92:
93: static __inline u_int8_t
94: wbsio_conf_read(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index)
95: {
96: bus_space_write_1(iot, ioh, WBSIO_INDEX, index);
97: return (bus_space_read_1(iot, ioh, WBSIO_DATA));
98: }
99:
100: static __inline void
101: wbsio_conf_write(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index,
102: u_int8_t data)
103: {
104: bus_space_write_1(iot, ioh, WBSIO_INDEX, index);
105: bus_space_write_1(iot, ioh, WBSIO_DATA, data);
106: }
107:
108: int
109: wbsio_probe(device_t parent, cfdata_t match, void *aux)
110: {
111: struct isa_attach_args *ia = aux;
112: bus_space_tag_t iot;
113: bus_space_handle_t ioh;
114: u_int8_t reg;
115:
116: /* Must supply an address */
117: if (ia->ia_nio < 1)
118: return 0;
119:
120: if (ISA_DIRECT_CONFIG(ia))
121: return 0;
122:
123: if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
124: return 0;
125:
126: /* Match by device ID */
127: iot = ia->ia_iot;
128: if (bus_space_map(iot, ia->ia_io[0].ir_addr, WBSIO_IOSIZE, 0, &ioh))
129: return 0;
130: wbsio_conf_enable(iot, ioh);
131: reg = wbsio_conf_read(iot, ioh, WBSIO_ID);
132: aprint_debug("wbsio_probe: id 0x%02x\n", reg);
133: wbsio_conf_disable(iot, ioh);
134: bus_space_unmap(iot, ioh, WBSIO_IOSIZE);
135: switch (reg) {
136: case WBSIO_ID_W83627HF:
137: case WBSIO_ID_W83627THF:
138: case WBSIO_ID_W83627EHF:
139: case WBSIO_ID_W83627DHG:
140: case WBSIO_ID_W83637HF:
141: case WBSIO_ID_W83697HF:
142: ia->ia_nio = 1;
143: ia->ia_io[0].ir_size = WBSIO_IOSIZE;
144: ia->ia_niomem = 0;
145: ia->ia_nirq = 0;
146: ia->ia_ndrq = 0;
147: return 1;
148: }
149:
150: return 0;
151: }
152:
153: void
154: wbsio_attach(device_t parent, device_t self, void *aux)
155: {
156: struct wbsio_softc *sc = (void *)self;
157: struct isa_attach_args *ia = aux;
158: struct isa_attach_args nia;
159: const char *desc = NULL;
160: u_int8_t reg, reg0, reg1;
161: u_int16_t iobase;
162:
163: /* Map ISA I/O space */
164: sc->sc_iot = ia->ia_iot;
165: if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr,
166: WBSIO_IOSIZE, 0, &sc->sc_ioh)) {
167: aprint_error(": can't map i/o space\n");
168: return;
169: }
170:
171: /* Enter configuration mode */
172: wbsio_conf_enable(sc->sc_iot, sc->sc_ioh);
173:
174: /* Read device ID */
175: reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_ID);
176: switch (reg) {
177: case WBSIO_ID_W83627HF:
178: desc = "W83627HF";
179: break;
180: case WBSIO_ID_W83627THF:
181: desc = "W83627THF";
182: break;
183: case WBSIO_ID_W83627EHF:
184: desc = "W83627EHF";
185: break;
186: case WBSIO_ID_W83627DHG:
187: desc = "W83627DHG";
188: break;
189: case WBSIO_ID_W83637HF:
190: desc = "W83637HF";
191: break;
1.2 cnst 192: case WBSIO_ID_W83667HG:
193: desc = "W83667HG";
194: break;
1.1 cnst 195: case WBSIO_ID_W83697HF:
196: desc = "W83697HF";
197: break;
198: }
199:
200: /* Read device revision */
201: reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_REV);
202:
203: aprint_naive("\n");
204: aprint_normal(": Winbond LPC Super I/O %s rev 0x%02x\n", desc, reg);
205:
206: /* Select HM logical device */
207: wbsio_conf_write(sc->sc_iot, sc->sc_ioh, WBSIO_LDN, WBSIO_LDN_HM);
208:
209: /*
210: * The address should be 8-byte aligned, but it seems some
211: * BIOSes ignore this. They get away with it, because
212: * Apparently the hardware simply ignores the lower three
213: * bits. We do the same here.
214: */
215: reg0 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_LSB);
216: reg1 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_MSB);
217: iobase = (reg1 << 8) | (reg0 & ~0x7);
218:
219: /* Escape from configuration mode */
220: wbsio_conf_disable(sc->sc_iot, sc->sc_ioh);
221:
1.4 jakllsch 222: if (!pmf_device_register(self, NULL, NULL))
223: aprint_error_dev(self, "couldn't establish power handler\n");
224:
1.1 cnst 225: if (iobase == 0)
226: return;
227:
228: nia = *ia;
229: nia.ia_io[0].ir_addr = iobase;
230: config_found(self, &nia, wbsio_print);
231: }
232:
233: int
1.5 jakllsch 234: wbsio_detach(device_t self, int flags)
235: {
236: int rc;
237:
238: if ((rc = config_detach_children(self, flags)) != 0)
239: return rc;
240: bus_space_unmap(sc->sc_iot, sc->sc_ioh, WBSIO_IOSIZE);
241: pmf_device_deregister(self);
242: return 0;
243: }
244:
245: void
246: wbsio_childdet(device_t self, device_t child)
247: {
248: return;
249: }
250:
251: int
1.1 cnst 252: wbsio_print(void *aux, const char *pnp)
253: {
254: struct isa_attach_args *ia = aux;
255:
256: if (pnp)
257: aprint_normal("%s", pnp);
258: if (ia->ia_io[0].ir_size)
259: aprint_normal(" port 0x%x", ia->ia_io[0].ir_addr);
260: if (ia->ia_io[0].ir_size > 1)
261: aprint_normal("-0x%x", ia->ia_io[0].ir_addr +
262: ia->ia_io[0].ir_size - 1);
263: return (UNCONF);
264: }
1.6 jakllsch 265:
1.7 ! jakllsch 266: MODULE(MODULE_CLASS_DRIVER, wbsio, NULL);
1.6 jakllsch 267:
268: #ifdef _MODULE
269: #include "ioconf.c"
270: #endif
271:
272: static int
273: wbsio_modcmd(modcmd_t cmd, void *opaque)
274: {
275: switch (cmd) {
276: case MODULE_CMD_INIT:
277: #ifdef _MODULE
278: return config_init_component(cfdriver_ioconf_wbsio,
279: cfattach_ioconf_wbsio, cfdata_ioconf_wbsio);
280: #else
281: return 0;
282: #endif
283: case MODULE_CMD_FINI:
284: #ifdef _MODULE
285: return config_fini_component(cfdriver_ioconf_wbsio,
286: cfattach_ioconf_wbsio, cfdata_ioconf_wbsio);
287: #else
288: return 0;
289: #endif
290: default:
291: return ENOTTY;
292: }
293: }
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