WebSVN - shark - Blame - Rev 775 - /shark/trunk/drivers/cpu/shark/shark

Rev	Author	Line No.	Line
582	mauro	1	/*
		2	* Project: S.Ha.R.K.
		3	*
		4	* Coordinators:
		5	* Giorgio Buttazzo <giorgio@sssup.it>
		6	* Paolo Gai <pj@gandalf.sssup.it>
		7	*
		8	* Authors :
		9	* Mauro Marinoni <mauro.marinoni@unipv.it>
		10	*
		11	*
		12	* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
		13	*
		14	* http://www.sssup.it
		15	* http://retis.sssup.it
		16	* http://shark.sssup.it
		17	*/
		18
		19	#include <kernel/func.h>
		20	#include "../include/drivers/shark_cpu26.h"
		21
775	mauro	22	//#define __CPU26_DEBUG__
582	mauro	23
		24	/* CPU Initialization */
		25	extern void early_cpu_init(void);
		26	extern void identify_cpu_0(void);
		27	extern void print_cpu_info_0(void);
		28
		29	/* AMD K6 PowerNow */
		30	extern int powernow_k6_init(void);
		31	extern void powernow_k6_exit(void);
		32	/* AMD K7 PowerNow */
		33	extern int powernow_init(void);
		34	extern void powernow_exit(void);
		35	/* AMD K8 PowerNow */
		36	extern int powernowk8_init(void);
		37	extern void powernowk8_exit(void);
		38	/* Cyrix MediaGX - NatSemi Geode */
		39	extern int cpufreq_gx_init(void);
		40	extern void cpufreq_gx_exit(void);
		41	/* Pentium4 clock modulation/speed scaling */
		42	extern int cpufreq_p4_init(void);
		43	extern void cpufreq_p4_exit(void);
		44	/* PentiumM/Centrino SpeedStep */
		45	extern int centrino_init(void);
		46	extern void centrino_exit(void);
		47	/* Pentium ICH SpeedStep */
		48	extern int speedstep_ich_init(void);
		49	extern void speedstep_ich_exit(void);
		50	/* Pentium SMI SpeedStep */
		51	/*extern int speedstep_smi_init(void);
		52	extern void speedstep_smi_exit(void);*/
		53
597	mauro	54	/* DVS function */
		55	extern int cpufreq_target(unsigned int target_freq, unsigned int relation);
		56	extern int cpufreq_get_cur_freq(void);
		57	extern int cpufreq_get_min_freq(void);
		58	extern int cpufreq_get_max_freq(void);
		59	extern int cpufreq_get_latency(void);
775	mauro	60	extern int cpufreq_get_available_freqs(int *buf);
770	mauro	61	extern int cpufreq_show_available_freqs(char *buf);
597	mauro	62
582	mauro	63	static int cpu_installed = FALSE;
		64	static int dvs_installed = DVS_NONE;
775	mauro	65	int cpu26_freqs[DVS_MAX_NUM_FREQS];
582	mauro	66
597	mauro	67	/* DVS user function */
770	mauro	68	inline int CPU26_set_frequency(unsigned int target_freq, unsigned int relation)
582	mauro	69	{
597	mauro	70	return cpufreq_target(target_freq, relation);
582	mauro	71	}
		72
770	mauro	73	inline int CPU26_get_cur_frequency()
582	mauro	74	{
597	mauro	75	return cpufreq_get_cur_freq();
582	mauro	76	}
		77
770	mauro	78	inline int CPU26_get_min_frequency()
582	mauro	79	{
597	mauro	80	return cpufreq_get_min_freq();
		81	}
582	mauro	82
770	mauro	83	inline int CPU26_get_max_frequency()
597	mauro	84	{
		85	return cpufreq_get_max_freq();
582	mauro	86	}
		87
775	mauro	88	inline int CPU26_get_frequencys(int *buf)
582	mauro	89	{
775	mauro	90	return cpufreq_get_available_freqs (buf);
		91	}
		92
		93	inline int CPU26_show_frequencys(char *buf)
		94	{
770	mauro	95	return cpufreq_show_available_freqs (buf);
		96	}
		97
		98	inline int CPU26_get_latency()
		99	{
597	mauro	100	return cpufreq_get_latency();
582	mauro	101	}
		102
		103	int CPU26_initDVS(void)
		104	{
		105	int ret = 0;
		106
		107	if (cpu_installed == FALSE)
		108	return -1;
		109
		110	if (dvs_installed != DVS_NONE)
		111	return 0;
		112
		113	ret = powernow_k6_init();
		114	#ifdef __CPU26_DEBUG__
		115	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		116	#endif
		117	if (!ret) {
		118	dvs_installed = DVS_POWERNOW_K6;
		119	return dvs_installed;
		120	}
		121
		122	ret = powernow_init();
		123	#ifdef __CPU26_DEBUG__
		124	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		125	#endif
		126	if (!ret) {
		127	dvs_installed = DVS_POWERNOW_K7;
		128	return dvs_installed;
		129	}
		130
		131	ret = powernowk8_init();
		132	#ifdef __CPU26_DEBUG__
		133	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		134	#endif
		135	if (!ret) {
		136	dvs_installed = DVS_POWERNOW_K8;
		137	return dvs_installed;
		138	}
		139
		140	ret = cpufreq_gx_init();
		141	#ifdef __CPU26_DEBUG__
		142	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		143	#endif
		144	if (!ret) {
		145	dvs_installed = DVS_MEDIAGX_GEODE;
		146	return dvs_installed;
		147	}
		148
		149	ret = cpufreq_p4_init();
		150	#ifdef __CPU26_DEBUG__
		151	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		152	#endif
		153	if (!ret) {
		154	dvs_installed = DVS_P4_CLOCK_MOD;
		155	return dvs_installed;
		156	}
		157
		158	ret = centrino_init();
		159	#ifdef __CPU26_DEBUG__
		160	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		161	#endif
		162	if (!ret) {
		163	dvs_installed = DVS_SS_CENTRINO;
		164	return dvs_installed;
		165	}
		166
		167	ret = speedstep_ich_init();
		168	#ifdef __CPU26_DEBUG__
		169	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		170	#endif
		171	if (!ret) {
		172	dvs_installed = DVS_SS_ICH;
		173	return dvs_installed;
		174	}
		175
		176	/*ret = speedstep_smi_init();
		177	#ifdef __CPU26_DEBUG__
		178	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		179	#endif
		180	if (!ret) {
		181	dvs_installed = DVS_SS_SMI;
		182	return dvs_installed;
		183	}*/
		184
		185	return -1;
		186	}
		187
		188	int CPU26_closeDVS(void)
		189	{
		190	switch(dvs_installed) {
		191	case DVS_NONE:
		192	return -1;
		193	case DVS_POWERNOW_K6:
		194	powernow_k6_exit();
		195	return 0;
		196	case DVS_POWERNOW_K7:
		197	powernow_exit();
		198	return 0;
		199	case DVS_POWERNOW_K8:
		200	powernowk8_exit();
		201	return 0;
		202	case DVS_MEDIAGX_GEODE:
		203	cpufreq_gx_exit();
		204	return 0;
		205	case DVS_P4_CLOCK_MOD:
		206	cpufreq_p4_exit();
		207	return 0;
		208	case DVS_SS_CENTRINO:
		209	centrino_exit();
		210	return 0;
		211	case DVS_SS_ICH:
		212	speedstep_ich_exit();
		213	return 0;
		214	/*case DVS_SS_SMI:
		215	speedstep_smi_exit();
		216	return 0;*/
		217	}
		218
		219	dvs_installed = DVS_NONE;
		220	return 0;
		221	}
597	mauro	222
		223	/* Init the Linux CPU Layer */
770	mauro	224	inline int CPU26_installed(void)
597	mauro	225	{
		226	return cpu_installed;
		227	}
		228
770	mauro	229	inline void CPU26_showinfo(void)
597	mauro	230	{
		231	print_cpu_info_0();
		232	}
		233
		234	int CPU26_init(void)
		235	{
		236	int ret = 0;
		237
		238	if (cpu_installed == TRUE) return 0;
		239
		240	early_cpu_init();
		241
		242	identify_cpu_0();
		243
		244	printk(KERN_INFO);
		245	print_cpu_info_0();
		246
		247	cpu_installed = TRUE;
		248
		249	return ret;
		250	}
		251
770	mauro	252	inline int CPU26_close(void)
597	mauro	253	{
		254	if (cpu_installed == TRUE) {
		255	return 0;
		256	} else
		257	return -1;
		258	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c - Rev 775