wbsio(4): support W83627DHG-P (0xb0); hw mon supported by lm(4) as W83627DHG (0xc1)
[dragonfly.git] / sys / dev / powermng / wbsio / wbsio.c
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1/* $NetBSD: wbsio.c,v 1.1 2010/02/21 05:16:29 cnst Exp $ */
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>
f81520ed 5 * Copyright (c) 2010 Constantine A. Murenin <cnst++@dragonflybsd.org>
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6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/*
21 * Winbond LPC Super I/O driver.
22 */
23
24#include <sys/param.h>
f81520ed 25#include <sys/bus.h>
a5261280 26#include <sys/kernel.h>
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27#include <sys/module.h>
28#include <sys/rman.h>
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29#include <sys/systm.h>
30
f81520ed 31#include <bus/isa/isavar.h>
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32
33/* ISA bus registers */
34#define WBSIO_INDEX 0x00 /* Configuration Index Register */
35#define WBSIO_DATA 0x01 /* Configuration Data Register */
36
37#define WBSIO_IOSIZE 0x02 /* ISA I/O space size */
38
39#define WBSIO_CONF_EN_MAGIC 0x87 /* enable configuration mode */
40#define WBSIO_CONF_DS_MAGIC 0xaa /* disable configuration mode */
41
42/* Configuration Space Registers */
43#define WBSIO_LDN 0x07 /* Logical Device Number */
44#define WBSIO_ID 0x20 /* Device ID */
45#define WBSIO_REV 0x21 /* Device Revision */
46
47#define WBSIO_ID_W83627HF 0x52
48#define WBSIO_ID_W83627THF 0x82
49#define WBSIO_ID_W83627EHF 0x88
50#define WBSIO_ID_W83627DHG 0xa0
2c20825b 51#define WBSIO_ID_W83627DHGP 0xb0
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52#define WBSIO_ID_W83627SF 0x59
53#define WBSIO_ID_W83637HF 0x70
1c486d4b 54#define WBSIO_ID_W83667HG 0xa5
98037633 55#define WBSIO_ID_W83687THF 0x85
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56#define WBSIO_ID_W83697HF 0x60
57
58/* Logical Device Number (LDN) Assignments */
59#define WBSIO_LDN_HM 0x0b
60
61/* Hardware Monitor Control Registers (LDN B) */
62#define WBSIO_HM_ADDR_MSB 0x60 /* Address [15:8] */
63#define WBSIO_HM_ADDR_LSB 0x61 /* Address [7:0] */
64
65struct wbsio_softc {
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66 struct device *sc_dev;
67
68 struct resource *sc_iores;
69 int sc_iorid;
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70
71 bus_space_tag_t sc_iot;
72 bus_space_handle_t sc_ioh;
73};
74
fa130c02 75static void wbsio_identify(driver_t *, struct device *);
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76static int wbsio_probe(struct device *);
77static int wbsio_attach(struct device *);
78static int wbsio_detach(struct device *);
79
80static device_method_t wbsio_methods[] = {
fa130c02 81 DEVMETHOD(device_identify, wbsio_identify),
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82 DEVMETHOD(device_probe, wbsio_probe),
83 DEVMETHOD(device_attach, wbsio_attach),
84 DEVMETHOD(device_detach, wbsio_detach),
85
86 { NULL, NULL}
87};
88
89static driver_t wbsio_driver = {
90 "wbsio",
91 wbsio_methods,
92 sizeof(struct wbsio_softc)
93};
94
95static devclass_t wbsio_devclass;
96
97DRIVER_MODULE(wbsio, isa, wbsio_driver, wbsio_devclass, NULL, NULL);
a5261280 98
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99
100static __inline void
101wbsio_conf_enable(bus_space_tag_t iot, bus_space_handle_t ioh)
102{
103 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC);
104 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC);
105}
106
107static __inline void
108wbsio_conf_disable(bus_space_tag_t iot, bus_space_handle_t ioh)
109{
110 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_DS_MAGIC);
111}
112
113static __inline u_int8_t
114wbsio_conf_read(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index)
115{
116 bus_space_write_1(iot, ioh, WBSIO_INDEX, index);
117 return (bus_space_read_1(iot, ioh, WBSIO_DATA));
118}
119
120static __inline void
121wbsio_conf_write(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index,
122 u_int8_t data)
123{
124 bus_space_write_1(iot, ioh, WBSIO_INDEX, index);
125 bus_space_write_1(iot, ioh, WBSIO_DATA, data);
126}
127
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128static void
129wbsio_identify(driver_t *driver, struct device *parent)
130{
131#ifdef KLD_MODULE
132 struct device *child[2];
133 const int port[2] = { 0x2e, 0x4e };
134
135 for (int i = 0; i < 2; i++) {
136 child[i] = device_find_child(parent, driver->name, i);
137 if (child[i] == NULL) {
138 child[i] = BUS_ADD_CHILD(parent, parent, ISA_ORDER_PNP,
139 driver->name, i);
140 if (child[i] == NULL) {
141 kprintf("%s: cannot add child[%i]\n",
142 __func__, i);
143 continue;
144 }
145 } else
146 continue;
147 if (bus_set_resource(child[i], SYS_RES_IOPORT, 0,
148 port[i], WBSIO_IOSIZE))
149 kprintf("%s: cannot set resource for child[%i]\n",
150 __func__, i);
151 }
152#endif
153}
154
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155static int
156wbsio_probe(struct device *dev)
a5261280 157{
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158 struct resource *iores;
159 int iorid = 0;
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160 bus_space_tag_t iot;
161 bus_space_handle_t ioh;
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162 uint8_t reg_id, reg_rev;
163 const char *desc = NULL;
164 char fulldesc[64];
a5261280 165
f81520ed 166 /* Match by device ID */
a5261280 167
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168 iores = bus_alloc_resource(dev, SYS_RES_IOPORT, &iorid,
169 0ul, ~0ul, WBSIO_IOSIZE,
170 RF_ACTIVE);
171 if (iores == NULL)
172 return ENXIO;
173 iot = rman_get_bustag(iores);
174 ioh = rman_get_bushandle(iores);
a5261280 175
a5261280 176 wbsio_conf_enable(iot, ioh);
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177 /* Read device ID */
178 reg_id = wbsio_conf_read(iot, ioh, WBSIO_ID);
179 /* Read device revision */
180 reg_rev = wbsio_conf_read(iot, ioh, WBSIO_REV);
a5261280 181 wbsio_conf_disable(iot, ioh);
f81520ed 182 bus_release_resource(dev, SYS_RES_IOPORT, iorid, iores);
a5261280 183
f81520ed 184 switch (reg_id) {
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185 case WBSIO_ID_W83627HF:
186 desc = "W83627HF";
187 break;
188 case WBSIO_ID_W83627THF:
189 desc = "W83627THF";
190 break;
191 case WBSIO_ID_W83627EHF:
192 desc = "W83627EHF";
193 break;
194 case WBSIO_ID_W83627DHG:
195 desc = "W83627DHG";
196 break;
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197 case WBSIO_ID_W83627DHGP:
198 desc = "W83627DHG-P";
199 break;
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200 case WBSIO_ID_W83637HF:
201 desc = "W83637HF";
202 break;
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203 case WBSIO_ID_W83667HG:
204 desc = "W83667HG";
205 break;
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206 case WBSIO_ID_W83687THF:
207 desc = "W83687THF";
208 break;
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209 case WBSIO_ID_W83697HF:
210 desc = "W83697HF";
211 break;
212 }
213
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214 if (desc == NULL) {
215#ifndef KLD_MODULE
216 if (bootverbose)
217#endif
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218 if (!(reg_id == 0xff && reg_rev == 0xff))
219 device_printf(dev, "%s port 0x%02x: "
220 "Device ID 0x%02x, Rev 0x%02x\n",
221 __func__, isa_get_port(dev),
222 reg_id, reg_rev);
f81520ed 223 return ENXIO;
2d0bc204 224 }
a5261280 225
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226 ksnprintf(fulldesc, sizeof(fulldesc),
227 "Winbond LPC Super I/O %s rev 0x%02x", desc, reg_rev);
228 device_set_desc_copy(dev, fulldesc);
229 return 0;
230}
231
232static int
233wbsio_attach(struct device *dev)
234{
235 struct wbsio_softc *sc = device_get_softc(dev);
236 uint8_t reg0, reg1;
237 uint16_t iobase;
238 struct device *parent = device_get_parent(dev);
239 struct device *child;
240 struct devclass *c_dc;
241 int c_maxunit;
242
243 /* Map ISA I/O space */
244 sc->sc_iores = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->sc_iorid,
245 0ul, ~0ul, WBSIO_IOSIZE,
246 RF_ACTIVE);
247 if (sc->sc_iores == NULL) {
248 device_printf(dev, "can't map i/o space\n");
249 return ENXIO;
250 }
251 sc->sc_iot = rman_get_bustag(sc->sc_iores);
252 sc->sc_ioh = rman_get_bushandle(sc->sc_iores);
253
254 /* Enter configuration mode */
255 wbsio_conf_enable(sc->sc_iot, sc->sc_ioh);
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256
257 /* Select HM logical device */
258 wbsio_conf_write(sc->sc_iot, sc->sc_ioh, WBSIO_LDN, WBSIO_LDN_HM);
259
260 /*
261 * The address should be 8-byte aligned, but it seems some
262 * BIOSes ignore this. They get away with it, because
263 * Apparently the hardware simply ignores the lower three
264 * bits. We do the same here.
265 */
266 reg0 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_LSB);
267 reg1 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_MSB);
268 iobase = (reg1 << 8) | (reg0 & ~0x7);
f81520ed 269 device_printf(dev, "hardware monitor iobase is 0x%x\n", iobase);
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270
271 /* Escape from configuration mode */
272 wbsio_conf_disable(sc->sc_iot, sc->sc_ioh);
273
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274 if (iobase == 0) {
275 device_printf(dev, "no hardware monitor configured\n");
276 return 0;
277 }
a5261280 278
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279 child = NULL;
280 c_dc = devclass_find("lm");
281 if (c_dc == NULL) {
282 device_printf(dev, "lm devclass not found\n");
283 return ENXIO;
284 }
285 c_maxunit = devclass_get_maxunit(c_dc);
286 for (int u = 0; u < c_maxunit; u++) {
287 child = devclass_get_device(c_dc, u);
288 if (child == NULL)
289 continue;
290 if (isa_get_port(child) == iobase) {
291 if (device_is_attached(child)) {
292 device_printf(dev,
293 "%s is already attached at 0x%x\n",
294 device_get_nameunit(child), iobase);
295 return 0;
296 }
297 break;
298 }
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299 if (device_is_attached(child)) {
300 child = NULL;
f81520ed 301 continue;
647ed4b2 302 }
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303 device_printf(dev,
304 "found unused %s at 0x%x with state %i, reusing at 0x%x\n",
305 device_get_nameunit(child), isa_get_port(child),
306 device_get_state(child), iobase);
307 break;
308 }
309 if (child == NULL)
310 child = BUS_ADD_CHILD(parent, parent, ISA_ORDER_PNP,
311 "lm", -1);
312// child = BUS_ADD_CHILD(parent, parent, ISA_ORDER_PNP,
313// "lm", 3 + device_get_unit(dev));
314 if (child == NULL) {
315 device_printf(dev, "cannot add child\n");
316 return ENXIO;
317 }
318 if (bus_set_resource(child, SYS_RES_IOPORT, 0, iobase, 8)) {
319 device_printf(dev, "cannot set resource\n");
320 return ENXIO;
321 }
322 return device_probe_and_attach(child);
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323}
324
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325static int
326wbsio_detach(struct device *dev)
a5261280 327{
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328 struct wbsio_softc *sc = device_get_softc(dev);
329
330 return bus_release_resource(dev, SYS_RES_IOPORT,
331 sc->sc_iorid, sc->sc_iores);
a5261280 332}