WebSVN - shark - Blame - Rev 782 - /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"
782	giacomo	21	#include <tracer.h>
582	mauro	22
775	mauro	23	//#define __CPU26_DEBUG__
582	mauro	24
		25	/* CPU Initialization */
		26	extern void early_cpu_init(void);
		27	extern void identify_cpu_0(void);
		28	extern void print_cpu_info_0(void);
		29
		30	/* AMD K6 PowerNow */
		31	extern int powernow_k6_init(void);
		32	extern void powernow_k6_exit(void);
		33	/* AMD K7 PowerNow */
		34	extern int powernow_init(void);
		35	extern void powernow_exit(void);
		36	/* AMD K8 PowerNow */
		37	extern int powernowk8_init(void);
		38	extern void powernowk8_exit(void);
		39	/* Cyrix MediaGX - NatSemi Geode */
		40	extern int cpufreq_gx_init(void);
		41	extern void cpufreq_gx_exit(void);
		42	/* Pentium4 clock modulation/speed scaling */
		43	extern int cpufreq_p4_init(void);
		44	extern void cpufreq_p4_exit(void);
		45	/* PentiumM/Centrino SpeedStep */
		46	extern int centrino_init(void);
		47	extern void centrino_exit(void);
		48	/* Pentium ICH SpeedStep */
		49	extern int speedstep_ich_init(void);
		50	extern void speedstep_ich_exit(void);
		51	/* Pentium SMI SpeedStep */
		52	/*extern int speedstep_smi_init(void);
		53	extern void speedstep_smi_exit(void);*/
		54
597	mauro	55	/* DVS function */
		56	extern int cpufreq_target(unsigned int target_freq, unsigned int relation);
		57	extern int cpufreq_get_cur_freq(void);
		58	extern int cpufreq_get_min_freq(void);
		59	extern int cpufreq_get_max_freq(void);
		60	extern int cpufreq_get_latency(void);
775	mauro	61	extern int cpufreq_get_available_freqs(int *buf);
770	mauro	62	extern int cpufreq_show_available_freqs(char *buf);
597	mauro	63
582	mauro	64	static int cpu_installed = FALSE;
		65	static int dvs_installed = DVS_NONE;
775	mauro	66	int cpu26_freqs[DVS_MAX_NUM_FREQS];
582	mauro	67
597	mauro	68	/* DVS user function */
782	giacomo	69
		70	extern unsigned int clk_per_msec;
		71
		72	int CPU26_set_frequency(unsigned int target_freq, unsigned int relation)
582	mauro	73	{
782	giacomo	74
		75	int res;
		76
		77	res = cpufreq_target(target_freq, relation);
		78	TRACER_LOGEVENT(FTrace_EVT_cycles_per_msec,0,clk_per_msec);
		79	return res;
		80
582	mauro	81	}
		82
770	mauro	83	inline int CPU26_get_cur_frequency()
582	mauro	84	{
597	mauro	85	return cpufreq_get_cur_freq();
582	mauro	86	}
		87
770	mauro	88	inline int CPU26_get_min_frequency()
582	mauro	89	{
597	mauro	90	return cpufreq_get_min_freq();
		91	}
582	mauro	92
770	mauro	93	inline int CPU26_get_max_frequency()
597	mauro	94	{
		95	return cpufreq_get_max_freq();
582	mauro	96	}
		97
779	giacomo	98	inline int CPU26_get_frequencies(int *buf)
582	mauro	99	{
775	mauro	100	return cpufreq_get_available_freqs (buf);
		101	}
		102
779	giacomo	103	inline int CPU26_show_frequencies(char *buf)
775	mauro	104	{
770	mauro	105	return cpufreq_show_available_freqs (buf);
		106	}
		107
		108	inline int CPU26_get_latency()
		109	{
597	mauro	110	return cpufreq_get_latency();
582	mauro	111	}
		112
779	giacomo	113	inline int CPU26_DVS_status(void)
582	mauro	114	{
779	giacomo	115	return dvs_installed;
		116	}
		117
		118	int CPU26_DVS_init(void)
		119	{
582	mauro	120	int ret = 0;
		121
		122	if (cpu_installed == FALSE)
		123	return -1;
		124
		125	if (dvs_installed != DVS_NONE)
		126	return 0;
		127
		128	ret = powernow_k6_init();
		129	#ifdef __CPU26_DEBUG__
		130	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		131	#endif
		132	if (!ret) {
		133	dvs_installed = DVS_POWERNOW_K6;
		134	return dvs_installed;
		135	}
		136
		137	ret = powernow_init();
		138	#ifdef __CPU26_DEBUG__
		139	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		140	#endif
		141	if (!ret) {
		142	dvs_installed = DVS_POWERNOW_K7;
		143	return dvs_installed;
		144	}
		145
		146	ret = powernowk8_init();
		147	#ifdef __CPU26_DEBUG__
		148	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		149	#endif
		150	if (!ret) {
		151	dvs_installed = DVS_POWERNOW_K8;
		152	return dvs_installed;
		153	}
		154
		155	ret = cpufreq_gx_init();
		156	#ifdef __CPU26_DEBUG__
		157	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		158	#endif
		159	if (!ret) {
		160	dvs_installed = DVS_MEDIAGX_GEODE;
		161	return dvs_installed;
		162	}
		163
		164	ret = cpufreq_p4_init();
		165	#ifdef __CPU26_DEBUG__
		166	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		167	#endif
		168	if (!ret) {
		169	dvs_installed = DVS_P4_CLOCK_MOD;
		170	return dvs_installed;
		171	}
		172
		173	ret = centrino_init();
		174	#ifdef __CPU26_DEBUG__
		175	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		176	#endif
		177	if (!ret) {
		178	dvs_installed = DVS_SS_CENTRINO;
		179	return dvs_installed;
		180	}
		181
		182	ret = speedstep_ich_init();
		183	#ifdef __CPU26_DEBUG__
		184	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		185	#endif
		186	if (!ret) {
		187	dvs_installed = DVS_SS_ICH;
		188	return dvs_installed;
		189	}
		190
		191	/*ret = speedstep_smi_init();
		192	#ifdef __CPU26_DEBUG__
		193	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		194	#endif
		195	if (!ret) {
		196	dvs_installed = DVS_SS_SMI;
		197	return dvs_installed;
		198	}*/
		199
		200	return -1;
		201	}
		202
779	giacomo	203	int CPU26_DVS_close(void)
582	mauro	204	{
		205	switch(dvs_installed) {
		206	case DVS_NONE:
		207	return -1;
		208	case DVS_POWERNOW_K6:
		209	powernow_k6_exit();
		210	return 0;
		211	case DVS_POWERNOW_K7:
		212	powernow_exit();
		213	return 0;
		214	case DVS_POWERNOW_K8:
		215	powernowk8_exit();
		216	return 0;
		217	case DVS_MEDIAGX_GEODE:
		218	cpufreq_gx_exit();
		219	return 0;
		220	case DVS_P4_CLOCK_MOD:
		221	cpufreq_p4_exit();
		222	return 0;
		223	case DVS_SS_CENTRINO:
		224	centrino_exit();
		225	return 0;
		226	case DVS_SS_ICH:
		227	speedstep_ich_exit();
		228	return 0;
		229	/*case DVS_SS_SMI:
		230	speedstep_smi_exit();
		231	return 0;*/
		232	}
		233
		234	dvs_installed = DVS_NONE;
		235	return 0;
		236	}
597	mauro	237
		238	/* Init the Linux CPU Layer */
770	mauro	239	inline int CPU26_installed(void)
597	mauro	240	{
		241	return cpu_installed;
		242	}
		243
770	mauro	244	inline void CPU26_showinfo(void)
597	mauro	245	{
		246	print_cpu_info_0();
		247	}
		248
		249	int CPU26_init(void)
		250	{
		251	int ret = 0;
		252
		253	if (cpu_installed == TRUE) return 0;
		254
		255	early_cpu_init();
		256
		257	identify_cpu_0();
		258
		259	printk(KERN_INFO);
		260	print_cpu_info_0();
		261
		262	cpu_installed = TRUE;
		263
		264	return ret;
		265	}
		266
770	mauro	267	inline int CPU26_close(void)
597	mauro	268	{
		269	if (cpu_installed == TRUE) {
		270	return 0;
		271	} else
		272	return -1;
		273	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c - Rev 782