Rev 1063 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 582 | mauro | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Mauro Marinoni <mauro.marinoni@unipv.it> |
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| 10 | * |
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| 11 | * |
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| 12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 13 | * |
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| 14 | * http://www.sssup.it |
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| 15 | * http://retis.sssup.it |
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| 16 | * http://shark.sssup.it |
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| 17 | */ |
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| 18 | |||
| 1063 | tullio | 19 | /* |
| 20 | * This program is free software; you can redistribute it and/or modify |
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| 21 | * it under the terms of the GNU General Public License as published by |
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| 22 | * the Free Software Foundation; either version 2 of the License, or |
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| 23 | * (at your option) any later version. |
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| 24 | * |
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| 25 | * This program is distributed in the hope that it will be useful, |
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| 26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 28 | * GNU General Public License for more details. |
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| 29 | * |
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| 30 | * You should have received a copy of the GNU General Public License |
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| 31 | * along with this program; if not, write to the Free Software |
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| 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 33 | * |
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| 34 | */ |
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| 35 | |||
| 582 | mauro | 36 | #include <kernel/func.h> |
| 37 | #include "../include/drivers/shark_cpu26.h" |
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| 782 | giacomo | 38 | #include <tracer.h> |
| 582 | mauro | 39 | |
| 775 | mauro | 40 | //#define __CPU26_DEBUG__ |
| 582 | mauro | 41 | |
| 42 | /* CPU Initialization */ |
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| 43 | extern void early_cpu_init(void); |
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| 44 | extern void identify_cpu_0(void); |
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| 45 | extern void print_cpu_info_0(void); |
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| 46 | |||
| 47 | /* AMD K6 PowerNow */ |
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| 48 | extern int powernow_k6_init(void); |
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| 49 | extern void powernow_k6_exit(void); |
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| 50 | /* AMD K7 PowerNow */ |
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| 51 | extern int powernow_init(void); |
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| 52 | extern void powernow_exit(void); |
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| 53 | /* AMD K8 PowerNow */ |
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| 54 | extern int powernowk8_init(void); |
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| 55 | extern void powernowk8_exit(void); |
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| 56 | /* Cyrix MediaGX - NatSemi Geode */ |
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| 57 | extern int cpufreq_gx_init(void); |
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| 58 | extern void cpufreq_gx_exit(void); |
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| 59 | /* Pentium4 clock modulation/speed scaling */ |
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| 60 | extern int cpufreq_p4_init(void); |
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| 61 | extern void cpufreq_p4_exit(void); |
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| 62 | /* PentiumM/Centrino SpeedStep */ |
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| 63 | extern int centrino_init(void); |
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| 64 | extern void centrino_exit(void); |
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| 65 | /* Pentium ICH SpeedStep */ |
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| 66 | extern int speedstep_ich_init(void); |
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| 67 | extern void speedstep_ich_exit(void); |
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| 68 | /* Pentium SMI SpeedStep */ |
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| 69 | /*extern int speedstep_smi_init(void); |
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| 70 | extern void speedstep_smi_exit(void);*/ |
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| 71 | |||
| 597 | mauro | 72 | /* DVS function */ |
| 73 | extern int cpufreq_target(unsigned int target_freq, unsigned int relation); |
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| 74 | extern int cpufreq_get_cur_freq(void); |
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| 75 | extern int cpufreq_get_min_freq(void); |
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| 76 | extern int cpufreq_get_max_freq(void); |
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| 77 | extern int cpufreq_get_latency(void); |
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| 775 | mauro | 78 | extern int cpufreq_get_available_freqs(int *buf); |
| 770 | mauro | 79 | extern int cpufreq_show_available_freqs(char *buf); |
| 597 | mauro | 80 | |
| 582 | mauro | 81 | static int cpu_installed = FALSE; |
| 82 | static int dvs_installed = DVS_NONE; |
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| 775 | mauro | 83 | int cpu26_freqs[DVS_MAX_NUM_FREQS]; |
| 582 | mauro | 84 | |
| 597 | mauro | 85 | /* DVS user function */ |
| 782 | giacomo | 86 | |
| 87 | extern unsigned int clk_per_msec; |
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| 88 | |||
| 89 | int CPU26_set_frequency(unsigned int target_freq, unsigned int relation) |
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| 582 | mauro | 90 | { |
| 782 | giacomo | 91 | |
| 92 | int res; |
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| 93 | |||
| 789 | giacomo | 94 | if (dvs_installed != DVS_NONE && dvs_installed != DVS_MEDIAGX_GEODE) { |
| 95 | res = cpufreq_target(target_freq, relation); |
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| 96 | TRACER_LOGEVENT(FTrace_EVT_cycles_per_msec,0,clk_per_msec); |
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| 97 | return res; |
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| 98 | } else { |
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| 99 | return -1; |
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| 100 | } |
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| 782 | giacomo | 101 | |
| 582 | mauro | 102 | } |
| 103 | |||
| 789 | giacomo | 104 | extern void gx_force_values(unsigned char on_duration, unsigned char off_duration); |
| 105 | |||
| 106 | int CPU26_set_suspend_modulation(unsigned char on_duration, unsigned char off_duration) { |
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| 107 | |||
| 108 | if (dvs_installed == DVS_MEDIAGX_GEODE) { |
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| 109 | gx_force_values(on_duration, off_duration); |
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| 110 | return 0; |
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| 111 | } |
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| 112 | |||
| 113 | return -1; |
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| 114 | |||
| 115 | } |
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| 116 | |||
| 770 | mauro | 117 | inline int CPU26_get_cur_frequency() |
| 582 | mauro | 118 | { |
| 597 | mauro | 119 | return cpufreq_get_cur_freq(); |
| 582 | mauro | 120 | } |
| 121 | |||
| 770 | mauro | 122 | inline int CPU26_get_min_frequency() |
| 582 | mauro | 123 | { |
| 597 | mauro | 124 | return cpufreq_get_min_freq(); |
| 125 | } |
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| 582 | mauro | 126 | |
| 770 | mauro | 127 | inline int CPU26_get_max_frequency() |
| 597 | mauro | 128 | { |
| 129 | return cpufreq_get_max_freq(); |
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| 582 | mauro | 130 | } |
| 131 | |||
| 779 | giacomo | 132 | inline int CPU26_get_frequencies(int *buf) |
| 582 | mauro | 133 | { |
| 775 | mauro | 134 | return cpufreq_get_available_freqs (buf); |
| 135 | } |
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| 136 | |||
| 779 | giacomo | 137 | inline int CPU26_show_frequencies(char *buf) |
| 775 | mauro | 138 | { |
| 770 | mauro | 139 | return cpufreq_show_available_freqs (buf); |
| 140 | } |
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| 141 | |||
| 142 | inline int CPU26_get_latency() |
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| 143 | { |
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| 597 | mauro | 144 | return cpufreq_get_latency(); |
| 582 | mauro | 145 | } |
| 146 | |||
| 845 | mauro | 147 | inline int CPU26_DVS_installed(void) |
| 582 | mauro | 148 | { |
| 779 | giacomo | 149 | return dvs_installed; |
| 150 | } |
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| 151 | |||
| 152 | int CPU26_DVS_init(void) |
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| 153 | { |
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| 582 | mauro | 154 | int ret = 0; |
| 155 | |||
| 156 | if (cpu_installed == FALSE) |
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| 157 | return -1; |
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| 158 | |||
| 159 | if (dvs_installed != DVS_NONE) |
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| 160 | return 0; |
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| 161 | |||
| 162 | ret = powernow_k6_init(); |
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| 163 | #ifdef __CPU26_DEBUG__ |
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| 164 | printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret); |
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| 165 | #endif |
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| 166 | if (!ret) { |
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| 167 | dvs_installed = DVS_POWERNOW_K6; |
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| 168 | return dvs_installed; |
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| 169 | } |
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| 170 | |||
| 171 | ret = powernow_init(); |
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| 172 | #ifdef __CPU26_DEBUG__ |
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| 173 | printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret); |
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| 174 | #endif |
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| 175 | if (!ret) { |
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| 176 | dvs_installed = DVS_POWERNOW_K7; |
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| 177 | return dvs_installed; |
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| 178 | } |
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| 179 | |||
| 180 | ret = powernowk8_init(); |
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| 181 | #ifdef __CPU26_DEBUG__ |
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| 182 | printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret); |
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| 183 | #endif |
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| 184 | if (!ret) { |
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| 185 | dvs_installed = DVS_POWERNOW_K8; |
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| 186 | return dvs_installed; |
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| 187 | } |
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| 188 | |||
| 189 | ret = cpufreq_gx_init(); |
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| 190 | #ifdef __CPU26_DEBUG__ |
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| 191 | printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret); |
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| 192 | #endif |
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| 193 | if (!ret) { |
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| 194 | dvs_installed = DVS_MEDIAGX_GEODE; |
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| 195 | return dvs_installed; |
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| 196 | } |
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| 197 | |||
| 198 | ret = cpufreq_p4_init(); |
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| 199 | #ifdef __CPU26_DEBUG__ |
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| 200 | printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret); |
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| 201 | #endif |
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| 202 | if (!ret) { |
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| 203 | dvs_installed = DVS_P4_CLOCK_MOD; |
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| 204 | return dvs_installed; |
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| 205 | } |
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| 206 | |||
| 207 | ret = centrino_init(); |
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| 208 | #ifdef __CPU26_DEBUG__ |
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| 209 | printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret); |
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| 210 | #endif |
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| 211 | if (!ret) { |
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| 212 | dvs_installed = DVS_SS_CENTRINO; |
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| 213 | return dvs_installed; |
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| 214 | } |
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| 215 | |||
| 216 | ret = speedstep_ich_init(); |
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| 217 | #ifdef __CPU26_DEBUG__ |
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| 218 | printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret); |
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| 219 | #endif |
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| 220 | if (!ret) { |
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| 221 | dvs_installed = DVS_SS_ICH; |
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| 222 | return dvs_installed; |
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| 223 | } |
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| 224 | |||
| 225 | /*ret = speedstep_smi_init(); |
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| 226 | #ifdef __CPU26_DEBUG__ |
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| 227 | printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret); |
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| 228 | #endif |
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| 229 | if (!ret) { |
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| 230 | dvs_installed = DVS_SS_SMI; |
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| 231 | return dvs_installed; |
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| 232 | }*/ |
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| 233 | |||
| 234 | return -1; |
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| 235 | } |
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| 236 | |||
| 779 | giacomo | 237 | int CPU26_DVS_close(void) |
| 582 | mauro | 238 | { |
| 239 | switch(dvs_installed) { |
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| 240 | case DVS_NONE: |
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| 241 | return -1; |
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| 242 | case DVS_POWERNOW_K6: |
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| 243 | powernow_k6_exit(); |
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| 244 | return 0; |
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| 245 | case DVS_POWERNOW_K7: |
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| 246 | powernow_exit(); |
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| 247 | return 0; |
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| 248 | case DVS_POWERNOW_K8: |
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| 249 | powernowk8_exit(); |
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| 250 | return 0; |
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| 251 | case DVS_MEDIAGX_GEODE: |
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| 252 | cpufreq_gx_exit(); |
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| 253 | return 0; |
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| 254 | case DVS_P4_CLOCK_MOD: |
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| 255 | cpufreq_p4_exit(); |
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| 256 | return 0; |
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| 257 | case DVS_SS_CENTRINO: |
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| 258 | centrino_exit(); |
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| 259 | return 0; |
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| 260 | case DVS_SS_ICH: |
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| 261 | speedstep_ich_exit(); |
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| 262 | return 0; |
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| 263 | /*case DVS_SS_SMI: |
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| 264 | speedstep_smi_exit(); |
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| 265 | return 0;*/ |
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| 266 | } |
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| 267 | |||
| 268 | dvs_installed = DVS_NONE; |
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| 269 | return 0; |
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| 270 | } |
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| 597 | mauro | 271 | |
| 272 | /* Init the Linux CPU Layer */ |
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| 770 | mauro | 273 | inline int CPU26_installed(void) |
| 597 | mauro | 274 | { |
| 275 | return cpu_installed; |
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| 276 | } |
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| 277 | |||
| 770 | mauro | 278 | inline void CPU26_showinfo(void) |
| 597 | mauro | 279 | { |
| 280 | print_cpu_info_0(); |
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| 281 | } |
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| 282 | |||
| 283 | int CPU26_init(void) |
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| 284 | { |
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| 285 | int ret = 0; |
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| 286 | |||
| 287 | if (cpu_installed == TRUE) return 0; |
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| 288 | |||
| 289 | early_cpu_init(); |
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| 290 | |||
| 291 | identify_cpu_0(); |
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| 292 | |||
| 293 | printk(KERN_INFO); |
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| 294 | print_cpu_info_0(); |
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| 295 | |||
| 296 | cpu_installed = TRUE; |
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| 297 | |||
| 298 | return ret; |
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| 299 | } |
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| 300 | |||
| 770 | mauro | 301 | inline int CPU26_close(void) |
| 597 | mauro | 302 | { |
| 303 | if (cpu_installed == TRUE) { |
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| 304 | return 0; |
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| 305 | } else |
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| 306 | return -1; |
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| 307 | } |