WebSVN - shark - Blame - Rev 779 - /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
779	giacomo	88	inline int CPU26_get_frequencies(int *buf)
582	mauro	89	{
775	mauro	90	return cpufreq_get_available_freqs (buf);
		91	}
		92
779	giacomo	93	inline int CPU26_show_frequencies(char *buf)
775	mauro	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
779	giacomo	103	inline int CPU26_DVS_status(void)
582	mauro	104	{
779	giacomo	105	return dvs_installed;
		106	}
		107
		108	int CPU26_DVS_init(void)
		109	{
582	mauro	110	int ret = 0;
		111
		112	if (cpu_installed == FALSE)
		113	return -1;
		114
		115	if (dvs_installed != DVS_NONE)
		116	return 0;
		117
		118	ret = powernow_k6_init();
		119	#ifdef __CPU26_DEBUG__
		120	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		121	#endif
		122	if (!ret) {
		123	dvs_installed = DVS_POWERNOW_K6;
		124	return dvs_installed;
		125	}
		126
		127	ret = powernow_init();
		128	#ifdef __CPU26_DEBUG__
		129	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		130	#endif
		131	if (!ret) {
		132	dvs_installed = DVS_POWERNOW_K7;
		133	return dvs_installed;
		134	}
		135
		136	ret = powernowk8_init();
		137	#ifdef __CPU26_DEBUG__
		138	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		139	#endif
		140	if (!ret) {
		141	dvs_installed = DVS_POWERNOW_K8;
		142	return dvs_installed;
		143	}
		144
		145	ret = cpufreq_gx_init();
		146	#ifdef __CPU26_DEBUG__
		147	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		148	#endif
		149	if (!ret) {
		150	dvs_installed = DVS_MEDIAGX_GEODE;
		151	return dvs_installed;
		152	}
		153
		154	ret = cpufreq_p4_init();
		155	#ifdef __CPU26_DEBUG__
		156	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		157	#endif
		158	if (!ret) {
		159	dvs_installed = DVS_P4_CLOCK_MOD;
		160	return dvs_installed;
		161	}
		162
		163	ret = centrino_init();
		164	#ifdef __CPU26_DEBUG__
		165	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		166	#endif
		167	if (!ret) {
		168	dvs_installed = DVS_SS_CENTRINO;
		169	return dvs_installed;
		170	}
		171
		172	ret = speedstep_ich_init();
		173	#ifdef __CPU26_DEBUG__
		174	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		175	#endif
		176	if (!ret) {
		177	dvs_installed = DVS_SS_ICH;
		178	return dvs_installed;
		179	}
		180
		181	/*ret = speedstep_smi_init();
		182	#ifdef __CPU26_DEBUG__
		183	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		184	#endif
		185	if (!ret) {
		186	dvs_installed = DVS_SS_SMI;
		187	return dvs_installed;
		188	}*/
		189
		190	return -1;
		191	}
		192
779	giacomo	193	int CPU26_DVS_close(void)
582	mauro	194	{
		195	switch(dvs_installed) {
		196	case DVS_NONE:
		197	return -1;
		198	case DVS_POWERNOW_K6:
		199	powernow_k6_exit();
		200	return 0;
		201	case DVS_POWERNOW_K7:
		202	powernow_exit();
		203	return 0;
		204	case DVS_POWERNOW_K8:
		205	powernowk8_exit();
		206	return 0;
		207	case DVS_MEDIAGX_GEODE:
		208	cpufreq_gx_exit();
		209	return 0;
		210	case DVS_P4_CLOCK_MOD:
		211	cpufreq_p4_exit();
		212	return 0;
		213	case DVS_SS_CENTRINO:
		214	centrino_exit();
		215	return 0;
		216	case DVS_SS_ICH:
		217	speedstep_ich_exit();
		218	return 0;
		219	/*case DVS_SS_SMI:
		220	speedstep_smi_exit();
		221	return 0;*/
		222	}
		223
		224	dvs_installed = DVS_NONE;
		225	return 0;
		226	}
597	mauro	227
		228	/* Init the Linux CPU Layer */
770	mauro	229	inline int CPU26_installed(void)
597	mauro	230	{
		231	return cpu_installed;
		232	}
		233
770	mauro	234	inline void CPU26_showinfo(void)
597	mauro	235	{
		236	print_cpu_info_0();
		237	}
		238
		239	int CPU26_init(void)
		240	{
		241	int ret = 0;
		242
		243	if (cpu_installed == TRUE) return 0;
		244
		245	early_cpu_init();
		246
		247	identify_cpu_0();
		248
		249	printk(KERN_INFO);
		250	print_cpu_info_0();
		251
		252	cpu_installed = TRUE;
		253
		254	return ret;
		255	}
		256
770	mauro	257	inline int CPU26_close(void)
597	mauro	258	{
		259	if (cpu_installed == TRUE) {
		260	return 0;
		261	} else
		262	return -1;
		263	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c - Rev 779