WebSVN - shark - Blame - Rev 770 - /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);
770	mauro	60	extern int cpufreq_show_available_freqs(char *buf);
597	mauro	61
582	mauro	62	static int cpu_installed = FALSE;
		63	static int dvs_installed = DVS_NONE;
		64
597	mauro	65	/* DVS user function */
770	mauro	66	inline int CPU26_set_frequency(unsigned int target_freq, unsigned int relation)
582	mauro	67	{
597	mauro	68	return cpufreq_target(target_freq, relation);
582	mauro	69	}
		70
770	mauro	71	inline int CPU26_get_cur_frequency()
582	mauro	72	{
597	mauro	73	return cpufreq_get_cur_freq();
582	mauro	74	}
		75
770	mauro	76	inline int CPU26_get_min_frequency()
582	mauro	77	{
597	mauro	78	return cpufreq_get_min_freq();
		79	}
582	mauro	80
770	mauro	81	inline int CPU26_get_max_frequency()
597	mauro	82	{
		83	return cpufreq_get_max_freq();
582	mauro	84	}
		85
770	mauro	86	inline int CPU26_get_frequencys(char *buf)
582	mauro	87	{
770	mauro	88	return cpufreq_show_available_freqs (buf);
		89	}
		90
		91	inline int CPU26_get_latency()
		92	{
597	mauro	93	return cpufreq_get_latency();
582	mauro	94	}
		95
		96	int CPU26_initDVS(void)
		97	{
		98	int ret = 0;
		99
		100	if (cpu_installed == FALSE)
		101	return -1;
		102
		103	if (dvs_installed != DVS_NONE)
		104	return 0;
		105
		106	ret = powernow_k6_init();
		107	#ifdef __CPU26_DEBUG__
		108	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		109	#endif
		110	if (!ret) {
		111	dvs_installed = DVS_POWERNOW_K6;
		112	return dvs_installed;
		113	}
		114
		115	ret = powernow_init();
		116	#ifdef __CPU26_DEBUG__
		117	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		118	#endif
		119	if (!ret) {
		120	dvs_installed = DVS_POWERNOW_K7;
		121	return dvs_installed;
		122	}
		123
		124	ret = powernowk8_init();
		125	#ifdef __CPU26_DEBUG__
		126	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		127	#endif
		128	if (!ret) {
		129	dvs_installed = DVS_POWERNOW_K8;
		130	return dvs_installed;
		131	}
		132
		133	ret = cpufreq_gx_init();
		134	#ifdef __CPU26_DEBUG__
		135	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		136	#endif
		137	if (!ret) {
		138	dvs_installed = DVS_MEDIAGX_GEODE;
		139	return dvs_installed;
		140	}
		141
		142	ret = cpufreq_p4_init();
		143	#ifdef __CPU26_DEBUG__
		144	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		145	#endif
		146	if (!ret) {
		147	dvs_installed = DVS_P4_CLOCK_MOD;
		148	return dvs_installed;
		149	}
		150
		151	ret = centrino_init();
		152	#ifdef __CPU26_DEBUG__
		153	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		154	#endif
		155	if (!ret) {
		156	dvs_installed = DVS_SS_CENTRINO;
		157	return dvs_installed;
		158	}
		159
		160	ret = speedstep_ich_init();
		161	#ifdef __CPU26_DEBUG__
		162	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		163	#endif
		164	if (!ret) {
		165	dvs_installed = DVS_SS_ICH;
		166	return dvs_installed;
		167	}
		168
		169	/*ret = speedstep_smi_init();
		170	#ifdef __CPU26_DEBUG__
		171	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		172	#endif
		173	if (!ret) {
		174	dvs_installed = DVS_SS_SMI;
		175	return dvs_installed;
		176	}*/
		177
		178	return -1;
		179	}
		180
		181	int CPU26_closeDVS(void)
		182	{
		183	switch(dvs_installed) {
		184	case DVS_NONE:
		185	return -1;
		186	case DVS_POWERNOW_K6:
		187	powernow_k6_exit();
		188	return 0;
		189	case DVS_POWERNOW_K7:
		190	powernow_exit();
		191	return 0;
		192	case DVS_POWERNOW_K8:
		193	powernowk8_exit();
		194	return 0;
		195	case DVS_MEDIAGX_GEODE:
		196	cpufreq_gx_exit();
		197	return 0;
		198	case DVS_P4_CLOCK_MOD:
		199	cpufreq_p4_exit();
		200	return 0;
		201	case DVS_SS_CENTRINO:
		202	centrino_exit();
		203	return 0;
		204	case DVS_SS_ICH:
		205	speedstep_ich_exit();
		206	return 0;
		207	/*case DVS_SS_SMI:
		208	speedstep_smi_exit();
		209	return 0;*/
		210	}
		211
		212	dvs_installed = DVS_NONE;
		213	return 0;
		214	}
597	mauro	215
		216	/* Init the Linux CPU Layer */
770	mauro	217	inline int CPU26_installed(void)
597	mauro	218	{
		219	return cpu_installed;
		220	}
		221
770	mauro	222	inline void CPU26_showinfo(void)
597	mauro	223	{
		224	print_cpu_info_0();
		225	}
		226
		227	int CPU26_init(void)
		228	{
		229	int ret = 0;
		230
		231	if (cpu_installed == TRUE) return 0;
		232
		233	early_cpu_init();
		234
		235	identify_cpu_0();
		236
		237	printk(KERN_INFO);
		238	print_cpu_info_0();
		239
		240	cpu_installed = TRUE;
		241
		242	return ret;
		243	}
		244
770	mauro	245	inline int CPU26_close(void)
597	mauro	246	{
		247	if (cpu_installed == TRUE) {
		248	return 0;
		249	} else
		250	return -1;
		251	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c - Rev 770