Expand PMF_FN_* macros.
[netbsd-mini2440.git] / sys / dev / pci / amdpm.c
blobf1d3a2323d5a3abe789f113ea9c264e7b41ef7ea
1 /* $NetBSD: amdpm.c,v 1.32 2009/05/06 10:34:32 cegger Exp $ */
3 /*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Enami Tsugutomo.
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.
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.
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: amdpm.c,v 1.32 2009/05/06 10:34:32 cegger Exp $");
35 #include "opt_amdpm.h"
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/device.h>
41 #include <sys/callout.h>
42 #include <sys/rnd.h>
44 #include <sys/bus.h>
45 #include <dev/ic/acpipmtimer.h>
47 #include <dev/i2c/i2cvar.h>
49 #include <dev/pci/pcivar.h>
50 #include <dev/pci/pcireg.h>
51 #include <dev/pci/pcidevs.h>
53 #include <dev/pci/amdpmreg.h>
54 #include <dev/pci/amdpmvar.h>
55 #include <dev/pci/amdpm_smbusreg.h>
57 static void amdpm_rnd_callout(void *);
59 #ifdef AMDPM_RND_COUNTERS
60 #define AMDPM_RNDCNT_INCR(ev) (ev)->ev_count++
61 #endif
63 static int
64 amdpm_match(device_t parent, cfdata_t match, void *aux)
66 struct pci_attach_args *pa = aux;
68 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD) {
69 switch (PCI_PRODUCT(pa->pa_id)) {
70 case PCI_PRODUCT_AMD_PBC768_PMC:
71 case PCI_PRODUCT_AMD_PBC8111_ACPI:
72 return (1);
75 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NVIDIA) {
76 switch (PCI_PRODUCT(pa->pa_id)) {
77 case PCI_PRODUCT_NVIDIA_XBOX_SMBUS:
78 return (1);
82 return (0);
85 static void
86 amdpm_attach(device_t parent, device_t self, void *aux)
88 struct amdpm_softc *sc = device_private(self);
89 struct pci_attach_args *pa = aux;
90 char devinfo[256];
91 pcireg_t confreg, pmptrreg;
92 u_int32_t pmreg;
93 int i;
95 aprint_naive("\n");
96 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
97 aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
98 PCI_REVISION(pa->pa_class));
100 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NVIDIA_XBOX_SMBUS)
101 sc->sc_nforce = 1;
102 else
103 sc->sc_nforce = 0;
105 sc->sc_pc = pa->pa_pc;
106 sc->sc_tag = pa->pa_tag;
107 sc->sc_iot = pa->pa_iot;
108 sc->sc_pa = pa;
110 #if 0
111 aprint_normal_dev(&sc->sc_dev, "");
112 pci_conf_print(pa->pa_pc, pa->pa_tag, NULL);
113 #endif
115 confreg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMDPM_CONFREG);
116 /* enable pm i/o space for AMD-8111 and nForce */
117 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PBC8111_ACPI ||
118 sc->sc_nforce)
119 confreg |= AMDPM_PMIOEN;
121 /* Enable random number generation for everyone */
122 pci_conf_write(pa->pa_pc, pa->pa_tag, AMDPM_CONFREG,
123 confreg | AMDPM_RNGEN);
124 confreg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMDPM_CONFREG);
126 if ((confreg & AMDPM_PMIOEN) == 0) {
127 aprint_error_dev(&sc->sc_dev, "PMxx space isn't enabled\n");
128 return;
131 if (sc->sc_nforce) {
132 pmptrreg = pci_conf_read(pa->pa_pc, pa->pa_tag, NFORCE_PMPTR);
133 aprint_normal_dev(&sc->sc_dev, "power management at 0x%04x\n",
134 NFORCE_PMBASE(pmptrreg));
135 if (bus_space_map(sc->sc_iot, NFORCE_PMBASE(pmptrreg),
136 AMDPM_PMSIZE, 0, &sc->sc_ioh)) {
137 aprint_error_dev(&sc->sc_dev, "failed to map PMxx space\n");
138 return;
140 } else {
141 pmptrreg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMDPM_PMPTR);
142 if (bus_space_map(sc->sc_iot, AMDPM_PMBASE(pmptrreg),
143 AMDPM_PMSIZE, 0, &sc->sc_ioh)) {
144 aprint_error_dev(&sc->sc_dev, "failed to map PMxx space\n");
145 return;
149 /* don't attach a timecounter on nforce boards */
150 if ((confreg & AMDPM_TMRRST) == 0 && (confreg & AMDPM_STOPTMR) == 0 &&
151 !sc->sc_nforce) {
152 acpipmtimer_attach(&sc->sc_dev, sc->sc_iot, sc->sc_ioh,
153 AMDPM_TMR, ((confreg & AMDPM_TMR32) ? ACPIPMT_32BIT : 0));
156 /* try to attach devices on the smbus */
157 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PBC8111_ACPI ||
158 sc->sc_nforce) {
159 amdpm_smbus_attach(sc);
162 if (confreg & AMDPM_RNGEN) {
163 /* Check to see if we can read data from the RNG. */
164 (void) bus_space_read_4(sc->sc_iot, sc->sc_ioh,
165 AMDPM_RNGDATA);
166 for (i = 0; i < 1000; i++) {
167 pmreg = bus_space_read_4(sc->sc_iot,
168 sc->sc_ioh, AMDPM_RNGSTAT);
169 if (pmreg & AMDPM_RNGDONE)
170 break;
171 delay(1);
173 if ((pmreg & AMDPM_RNGDONE) != 0) {
174 aprint_normal_dev(&sc->sc_dev, ""
175 "random number generator enabled (apprx. %dms)\n",
177 callout_init(&sc->sc_rnd_ch, 0);
178 rnd_attach_source(&sc->sc_rnd_source,
179 device_xname(&sc->sc_dev), RND_TYPE_RNG,
181 * XXX Careful! The use of RND_FLAG_NO_ESTIMATE
182 * XXX here is unobvious: we later feed raw bits
183 * XXX into the "entropy pool" with rnd_add_data,
184 * XXX explicitly supplying an entropy estimate.
185 * XXX In this context, NO_ESTIMATE serves only
186 * XXX to prevent rnd_add_data from trying to
187 * XXX use the *time at which we added the data*
188 * XXX as entropy, which is not a good idea since
189 * XXX we add data periodically from a callout.
191 RND_FLAG_NO_ESTIMATE);
192 #ifdef AMDPM_RND_COUNTERS
193 evcnt_attach_dynamic(&sc->sc_rnd_hits, EVCNT_TYPE_MISC,
194 NULL, device_xname(&sc->sc_dev), "rnd hits");
195 evcnt_attach_dynamic(&sc->sc_rnd_miss, EVCNT_TYPE_MISC,
196 NULL, device_xname(&sc->sc_dev), "rnd miss");
197 for (i = 0; i < 256; i++) {
198 evcnt_attach_dynamic(&sc->sc_rnd_data[i],
199 EVCNT_TYPE_MISC, NULL, device_xname(&sc->sc_dev),
200 "rnd data");
202 #endif
203 amdpm_rnd_callout(sc);
208 CFATTACH_DECL(amdpm, sizeof(struct amdpm_softc),
209 amdpm_match, amdpm_attach, NULL, NULL);
211 static void
212 amdpm_rnd_callout(void *v)
214 struct amdpm_softc *sc = v;
215 u_int32_t rngreg;
216 #ifdef AMDPM_RND_COUNTERS
217 int i;
218 #endif
220 if ((bus_space_read_4(sc->sc_iot, sc->sc_ioh, AMDPM_RNGSTAT) &
221 AMDPM_RNGDONE) != 0) {
222 rngreg = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
223 AMDPM_RNGDATA);
224 rnd_add_data(&sc->sc_rnd_source, &rngreg,
225 sizeof(rngreg), sizeof(rngreg) * NBBY);
226 #ifdef AMDPM_RND_COUNTERS
227 AMDPM_RNDCNT_INCR(&sc->sc_rnd_hits);
228 for (i = 0; i < sizeof(rngreg); i++, rngreg >>= NBBY)
229 AMDPM_RNDCNT_INCR(&sc->sc_rnd_data[rngreg & 0xff]);
230 #endif
232 #ifdef AMDPM_RND_COUNTERS
233 else
234 AMDPM_RNDCNT_INCR(&sc->sc_rnd_miss);
235 #endif
236 callout_reset(&sc->sc_rnd_ch, 1, amdpm_rnd_callout, sc);