WebSVN - shark - Blame - Rev 789 - /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
789	giacomo	77	if (dvs_installed != DVS_NONE && dvs_installed != DVS_MEDIAGX_GEODE) {
		78	res = cpufreq_target(target_freq, relation);
		79	TRACER_LOGEVENT(FTrace_EVT_cycles_per_msec,0,clk_per_msec);
		80	return res;
		81	} else {
		82	return -1;
		83	}
782	giacomo	84
582	mauro	85	}
		86
789	giacomo	87	extern void gx_force_values(unsigned char on_duration, unsigned char off_duration);
		88
		89	int CPU26_set_suspend_modulation(unsigned char on_duration, unsigned char off_duration) {
		90
		91	if (dvs_installed == DVS_MEDIAGX_GEODE) {
		92	gx_force_values(on_duration, off_duration);
		93	return 0;
		94	}
		95
		96	return -1;
		97
		98	}
		99
770	mauro	100	inline int CPU26_get_cur_frequency()
582	mauro	101	{
597	mauro	102	return cpufreq_get_cur_freq();
582	mauro	103	}
		104
770	mauro	105	inline int CPU26_get_min_frequency()
582	mauro	106	{
597	mauro	107	return cpufreq_get_min_freq();
		108	}
582	mauro	109
770	mauro	110	inline int CPU26_get_max_frequency()
597	mauro	111	{
		112	return cpufreq_get_max_freq();
582	mauro	113	}
		114
779	giacomo	115	inline int CPU26_get_frequencies(int *buf)
582	mauro	116	{
775	mauro	117	return cpufreq_get_available_freqs (buf);
		118	}
		119
779	giacomo	120	inline int CPU26_show_frequencies(char *buf)
775	mauro	121	{
770	mauro	122	return cpufreq_show_available_freqs (buf);
		123	}
		124
		125	inline int CPU26_get_latency()
		126	{
597	mauro	127	return cpufreq_get_latency();
582	mauro	128	}
		129
779	giacomo	130	inline int CPU26_DVS_status(void)
582	mauro	131	{
779	giacomo	132	return dvs_installed;
		133	}
		134
		135	int CPU26_DVS_init(void)
		136	{
582	mauro	137	int ret = 0;
		138
		139	if (cpu_installed == FALSE)
		140	return -1;
		141
		142	if (dvs_installed != DVS_NONE)
		143	return 0;
		144
		145	ret = powernow_k6_init();
		146	#ifdef __CPU26_DEBUG__
		147	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		148	#endif
		149	if (!ret) {
		150	dvs_installed = DVS_POWERNOW_K6;
		151	return dvs_installed;
		152	}
		153
		154	ret = powernow_init();
		155	#ifdef __CPU26_DEBUG__
		156	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		157	#endif
		158	if (!ret) {
		159	dvs_installed = DVS_POWERNOW_K7;
		160	return dvs_installed;
		161	}
		162
		163	ret = powernowk8_init();
		164	#ifdef __CPU26_DEBUG__
		165	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		166	#endif
		167	if (!ret) {
		168	dvs_installed = DVS_POWERNOW_K8;
		169	return dvs_installed;
		170	}
		171
		172	ret = cpufreq_gx_init();
		173	#ifdef __CPU26_DEBUG__
		174	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		175	#endif
		176	if (!ret) {
		177	dvs_installed = DVS_MEDIAGX_GEODE;
		178	return dvs_installed;
		179	}
		180
		181	ret = cpufreq_p4_init();
		182	#ifdef __CPU26_DEBUG__
		183	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		184	#endif
		185	if (!ret) {
		186	dvs_installed = DVS_P4_CLOCK_MOD;
		187	return dvs_installed;
		188	}
		189
		190	ret = centrino_init();
		191	#ifdef __CPU26_DEBUG__
		192	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		193	#endif
		194	if (!ret) {
		195	dvs_installed = DVS_SS_CENTRINO;
		196	return dvs_installed;
		197	}
		198
		199	ret = speedstep_ich_init();
		200	#ifdef __CPU26_DEBUG__
		201	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		202	#endif
		203	if (!ret) {
		204	dvs_installed = DVS_SS_ICH;
		205	return dvs_installed;
		206	}
		207
		208	/*ret = speedstep_smi_init();
		209	#ifdef __CPU26_DEBUG__
		210	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		211	#endif
		212	if (!ret) {
		213	dvs_installed = DVS_SS_SMI;
		214	return dvs_installed;
		215	}*/
		216
		217	return -1;
		218	}
		219
779	giacomo	220	int CPU26_DVS_close(void)
582	mauro	221	{
		222	switch(dvs_installed) {
		223	case DVS_NONE:
		224	return -1;
		225	case DVS_POWERNOW_K6:
		226	powernow_k6_exit();
		227	return 0;
		228	case DVS_POWERNOW_K7:
		229	powernow_exit();
		230	return 0;
		231	case DVS_POWERNOW_K8:
		232	powernowk8_exit();
		233	return 0;
		234	case DVS_MEDIAGX_GEODE:
		235	cpufreq_gx_exit();
		236	return 0;
		237	case DVS_P4_CLOCK_MOD:
		238	cpufreq_p4_exit();
		239	return 0;
		240	case DVS_SS_CENTRINO:
		241	centrino_exit();
		242	return 0;
		243	case DVS_SS_ICH:
		244	speedstep_ich_exit();
		245	return 0;
		246	/*case DVS_SS_SMI:
		247	speedstep_smi_exit();
		248	return 0;*/
		249	}
		250
		251	dvs_installed = DVS_NONE;
		252	return 0;
		253	}
597	mauro	254
		255	/* Init the Linux CPU Layer */
770	mauro	256	inline int CPU26_installed(void)
597	mauro	257	{
		258	return cpu_installed;
		259	}
		260
770	mauro	261	inline void CPU26_showinfo(void)
597	mauro	262	{
		263	print_cpu_info_0();
		264	}
		265
		266	int CPU26_init(void)
		267	{
		268	int ret = 0;
		269
		270	if (cpu_installed == TRUE) return 0;
		271
		272	early_cpu_init();
		273
		274	identify_cpu_0();
		275
		276	printk(KERN_INFO);
		277	print_cpu_info_0();
		278
		279	cpu_installed = TRUE;
		280
		281	return ret;
		282	}
		283
770	mauro	284	inline int CPU26_close(void)
597	mauro	285	{
		286	if (cpu_installed == TRUE) {
		287	return 0;
		288	} else
		289	return -1;
		290	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c - Rev 789