WebSVN - shark - Blame - Rev 597 - /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
		22	#define __CPU26_DEBUG__
		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);
		60
582	mauro	61	static int cpu_installed = FALSE;
		62	static int dvs_installed = DVS_NONE;
		63
597	mauro	64	/* DVS user function */
		65	int CPU26_set_frequency(unsigned int target_freq, unsigned int relation)
582	mauro	66	{
597	mauro	67	return cpufreq_target(target_freq, relation);
582	mauro	68	}
		69
597	mauro	70	int CPU26_get_cur_frequency()
582	mauro	71	{
597	mauro	72	return cpufreq_get_cur_freq();
582	mauro	73	}
		74
597	mauro	75	int CPU26_get_min_frequency()
582	mauro	76	{
597	mauro	77	return cpufreq_get_min_freq();
		78	}
582	mauro	79
597	mauro	80	int CPU26_get_max_frequency()
		81	{
		82	return cpufreq_get_max_freq();
582	mauro	83	}
		84
597	mauro	85	int CPU26_get_latency()
582	mauro	86	{
597	mauro	87	return cpufreq_get_latency();
582	mauro	88	}
		89
		90	int CPU26_initDVS(void)
		91	{
		92	int ret = 0;
		93
		94	if (cpu_installed == FALSE)
		95	return -1;
		96
		97	if (dvs_installed != DVS_NONE)
		98	return 0;
		99
		100	ret = powernow_k6_init();
		101	#ifdef __CPU26_DEBUG__
		102	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		103	#endif
		104	if (!ret) {
		105	dvs_installed = DVS_POWERNOW_K6;
		106	return dvs_installed;
		107	}
		108
		109	ret = powernow_init();
		110	#ifdef __CPU26_DEBUG__
		111	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		112	#endif
		113	if (!ret) {
		114	dvs_installed = DVS_POWERNOW_K7;
		115	return dvs_installed;
		116	}
		117
		118	ret = powernowk8_init();
		119	#ifdef __CPU26_DEBUG__
		120	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		121	#endif
		122	if (!ret) {
		123	dvs_installed = DVS_POWERNOW_K8;
		124	return dvs_installed;
		125	}
		126
		127	ret = cpufreq_gx_init();
		128	#ifdef __CPU26_DEBUG__
		129	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		130	#endif
		131	if (!ret) {
		132	dvs_installed = DVS_MEDIAGX_GEODE;
		133	return dvs_installed;
		134	}
		135
		136	ret = cpufreq_p4_init();
		137	#ifdef __CPU26_DEBUG__
		138	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		139	#endif
		140	if (!ret) {
		141	dvs_installed = DVS_P4_CLOCK_MOD;
		142	return dvs_installed;
		143	}
		144
		145	ret = centrino_init();
		146	#ifdef __CPU26_DEBUG__
		147	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		148	#endif
		149	if (!ret) {
		150	dvs_installed = DVS_SS_CENTRINO;
		151	return dvs_installed;
		152	}
		153
		154	ret = speedstep_ich_init();
		155	#ifdef __CPU26_DEBUG__
		156	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		157	#endif
		158	if (!ret) {
		159	dvs_installed = DVS_SS_ICH;
		160	return dvs_installed;
		161	}
		162
		163	/*ret = speedstep_smi_init();
		164	#ifdef __CPU26_DEBUG__
		165	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		166	#endif
		167	if (!ret) {
		168	dvs_installed = DVS_SS_SMI;
		169	return dvs_installed;
		170	}*/
		171
		172	return -1;
		173	}
		174
		175	int CPU26_closeDVS(void)
		176	{
		177	switch(dvs_installed) {
		178	case DVS_NONE:
		179	return -1;
		180	case DVS_POWERNOW_K6:
		181	powernow_k6_exit();
		182	return 0;
		183	case DVS_POWERNOW_K7:
		184	powernow_exit();
		185	return 0;
		186	case DVS_POWERNOW_K8:
		187	powernowk8_exit();
		188	return 0;
		189	case DVS_MEDIAGX_GEODE:
		190	cpufreq_gx_exit();
		191	return 0;
		192	case DVS_P4_CLOCK_MOD:
		193	cpufreq_p4_exit();
		194	return 0;
		195	case DVS_SS_CENTRINO:
		196	centrino_exit();
		197	return 0;
		198	case DVS_SS_ICH:
		199	speedstep_ich_exit();
		200	return 0;
		201	/*case DVS_SS_SMI:
		202	speedstep_smi_exit();
		203	return 0;*/
		204	}
		205
		206	dvs_installed = DVS_NONE;
		207	return 0;
		208	}
597	mauro	209
		210	/* Init the Linux CPU Layer */
		211	int CPU26_installed(void)
		212	{
		213	return cpu_installed;
		214	}
		215
		216	void CPU26_showinfo(void)
		217	{
		218	print_cpu_info_0();
		219	}
		220
		221	int CPU26_init(void)
		222	{
		223	int ret = 0;
		224
		225	if (cpu_installed == TRUE) return 0;
		226
		227	early_cpu_init();
		228
		229	identify_cpu_0();
		230
		231	printk(KERN_INFO);
		232	print_cpu_info_0();
		233
		234	cpu_installed = TRUE;
		235
		236	return ret;
		237	}
		238
		239	int CPU26_close(void)
		240	{
		241	if (cpu_installed == TRUE) {
		242	return 0;
		243	} else
		244	return -1;
		245	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c @ 623 - Rev 597