| est.c (177040) | est.c (177296) |
|---|---|
| 1/*- 2 * Copyright (c) 2004 Colin Percival 3 * Copyright (c) 2005 Nate Lawson 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted providing that the following conditions 8 * are met: --- 12 unchanged lines hidden (view full) --- 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2004 Colin Percival 3 * Copyright (c) 2005 Nate Lawson 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted providing that the following conditions 8 * are met: --- 12 unchanged lines hidden (view full) --- 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> |
| 29__FBSDID("$FreeBSD: head/sys/i386/cpufreq/est.c 177040 2008-03-10 22:00:35Z jhb $"); | 29__FBSDID("$FreeBSD: head/sys/i386/cpufreq/est.c 177296 2008-03-17 09:01:43Z phk $"); |
| 30 31#include <sys/param.h> 32#include <sys/bus.h> 33#include <sys/cpu.h> 34#include <sys/kernel.h> 35#include <sys/malloc.h> 36#include <sys/module.h> 37#include <sys/smp.h> --- 58 unchanged lines hidden (view full) --- 96/* Default bus clock value for Centrino processors. */ 97#define INTEL_BUS_CLK 100 98 99/* XXX Update this if new CPUs have more settings. */ 100#define EST_MAX_SETTINGS 10 101CTASSERT(EST_MAX_SETTINGS <= MAX_SETTINGS); 102 103/* Estimate in microseconds of latency for performing a transition. */ | 30 31#include <sys/param.h> 32#include <sys/bus.h> 33#include <sys/cpu.h> 34#include <sys/kernel.h> 35#include <sys/malloc.h> 36#include <sys/module.h> 37#include <sys/smp.h> --- 58 unchanged lines hidden (view full) --- 96/* Default bus clock value for Centrino processors. */ 97#define INTEL_BUS_CLK 100 98 99/* XXX Update this if new CPUs have more settings. */ 100#define EST_MAX_SETTINGS 10 101CTASSERT(EST_MAX_SETTINGS <= MAX_SETTINGS); 102 103/* Estimate in microseconds of latency for performing a transition. */ |
| 104#define EST_TRANS_LAT 10 | 104#define EST_TRANS_LAT 1000 |
| 105 106/* 107 * Frequency (MHz) and voltage (mV) settings. Data from the 108 * Intel Pentium M Processor Datasheet (Order Number 252612), Table 5. 109 * 110 * Dothan processors have multiple VID#s with different settings for 111 * each VID#. Since we can't uniquely identify this info 112 * without undisclosed methods from Intel, we can't support newer --- 960 unchanged lines hidden (view full) --- 1073 1074static int 1075est_acpi_info(device_t dev, freq_info **freqs) 1076{ 1077 struct est_softc *sc; 1078 struct cf_setting *sets; 1079 freq_info *table; 1080 device_t perf_dev; | 105 106/* 107 * Frequency (MHz) and voltage (mV) settings. Data from the 108 * Intel Pentium M Processor Datasheet (Order Number 252612), Table 5. 109 * 110 * Dothan processors have multiple VID#s with different settings for 111 * each VID#. Since we can't uniquely identify this info 112 * without undisclosed methods from Intel, we can't support newer --- 960 unchanged lines hidden (view full) --- 1073 1074static int 1075est_acpi_info(device_t dev, freq_info **freqs) 1076{ 1077 struct est_softc *sc; 1078 struct cf_setting *sets; 1079 freq_info *table; 1080 device_t perf_dev; |
| 1081 int count, error, i, j; | 1081 int count, error, i, j, maxi, maxfreq; |
| 1082 uint16_t saved_id16; 1083 1084 perf_dev = device_find_child(device_get_parent(dev), "acpi_perf", -1); 1085 if (perf_dev == NULL || !device_is_attached(perf_dev)) 1086 return (ENXIO); 1087 1088 /* Fetch settings from acpi_perf. */ 1089 sc = device_get_softc(dev); --- 7 unchanged lines hidden (view full) --- 1097 goto out; 1098 1099 /* Parse settings into our local table format. */ 1100 table = malloc((count + 1) * sizeof(freq_info), M_DEVBUF, M_NOWAIT); 1101 if (table == NULL) { 1102 error = ENOMEM; 1103 goto out; 1104 } | 1082 uint16_t saved_id16; 1083 1084 perf_dev = device_find_child(device_get_parent(dev), "acpi_perf", -1); 1085 if (perf_dev == NULL || !device_is_attached(perf_dev)) 1086 return (ENXIO); 1087 1088 /* Fetch settings from acpi_perf. */ 1089 sc = device_get_softc(dev); --- 7 unchanged lines hidden (view full) --- 1097 goto out; 1098 1099 /* Parse settings into our local table format. */ 1100 table = malloc((count + 1) * sizeof(freq_info), M_DEVBUF, M_NOWAIT); 1101 if (table == NULL) { 1102 error = ENOMEM; 1103 goto out; 1104 } |
| 1105 maxi = maxfreq = 0; |
|
| 1105 for (i = 0, j = 0; i < count; i++) { 1106 /* 1107 * Confirm id16 value is correct. 1108 */ 1109 if (sets[i].freq > 0) { 1110 est_get_id16(&saved_id16); 1111 error = est_set_id16(dev, sets[i].spec[0], 1); 1112 if (error != 0) { 1113 if (bootverbose) 1114 device_printf(dev, "Invalid freq %u, " 1115 "ignored.\n", sets[i].freq); 1116 } else { 1117 table[j].freq = sets[i].freq; 1118 table[j].volts = sets[i].volts; 1119 table[j].id16 = sets[i].spec[0]; 1120 table[j].power = sets[i].power; 1121 ++j; | 1106 for (i = 0, j = 0; i < count; i++) { 1107 /* 1108 * Confirm id16 value is correct. 1109 */ 1110 if (sets[i].freq > 0) { 1111 est_get_id16(&saved_id16); 1112 error = est_set_id16(dev, sets[i].spec[0], 1); 1113 if (error != 0) { 1114 if (bootverbose) 1115 device_printf(dev, "Invalid freq %u, " 1116 "ignored.\n", sets[i].freq); 1117 } else { 1118 table[j].freq = sets[i].freq; 1119 table[j].volts = sets[i].volts; 1120 table[j].id16 = sets[i].spec[0]; 1121 table[j].power = sets[i].power; 1122 ++j; |
| 1123 if (sets[i].freq > maxfreq) { 1124 maxi = i; 1125 maxfreq = sets[i].freq; 1126 } 1127 |
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| 1122 } 1123 /* restore saved setting */ 1124 est_set_id16(dev, sets[i].spec[0], 0); 1125 } 1126 } | 1128 } 1129 /* restore saved setting */ 1130 est_set_id16(dev, sets[i].spec[0], 0); 1131 } 1132 } |
| 1133 /* 1134 * Set the frequency to max, so we get through boot fast, and don't 1135 * handicap systems not running powerd. 1136 */ 1137 if (maxfreq != 0) { 1138 device_printf(dev, "Setting %d MHz\n", sets[maxi].freq); 1139 est_set_id16(dev, sets[maxi].spec[0], 0); 1140 } |
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| 1127 1128 /* Mark end of table with a terminator. */ 1129 bzero(&table[j], sizeof(freq_info)); 1130 1131 sc->acpi_settings = TRUE; 1132 *freqs = table; 1133 error = 0; 1134 --- 163 unchanged lines hidden --- | 1141 1142 /* Mark end of table with a terminator. */ 1143 bzero(&table[j], sizeof(freq_info)); 1144 1145 sc->acpi_settings = TRUE; 1146 *freqs = table; 1147 error = 0; 1148 --- 163 unchanged lines hidden --- |