WebSVN - shark - Blame - Rev 582 - /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
		54	static int cpu_installed = FALSE;
		55	static int dvs_installed = DVS_NONE;
		56
		57	/* Init the Linux CPU Layer */
		58	int CPU26_installed(void)
		59	{
		60	return cpu_installed;
		61	}
		62
		63	void CPU26_showinfo(void)
		64	{
		65	print_cpu_info_0();
		66	}
		67
		68	int CPU26_init(void)
		69	{
		70	int ret = 0;
		71
		72	if (cpu_installed == TRUE) return 0;
		73
		74	early_cpu_init();
		75
		76	identify_cpu_0();
		77
		78	printk(KERN_INFO);
		79	print_cpu_info_0();
		80
		81	cpu_installed = TRUE;
		82
		83	return ret;
		84	}
		85
		86	int CPU26_close(void)
		87	{
		88	if (cpu_installed == TRUE) {
		89	return 0;
		90	} else
		91	return -1;
		92	}
		93
		94	int CPU26_initDVS(void)
		95	{
		96	int ret = 0;
		97
		98	if (cpu_installed == FALSE)
		99	return -1;
		100
		101	if (dvs_installed != DVS_NONE)
		102	return 0;
		103
		104	ret = powernow_k6_init();
		105	#ifdef __CPU26_DEBUG__
		106	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		107	#endif
		108	if (!ret) {
		109	dvs_installed = DVS_POWERNOW_K6;
		110	return dvs_installed;
		111	}
		112
		113	ret = powernow_init();
		114	#ifdef __CPU26_DEBUG__
		115	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		116	#endif
		117	if (!ret) {
		118	dvs_installed = DVS_POWERNOW_K7;
		119	return dvs_installed;
		120	}
		121
		122	ret = powernowk8_init();
		123	#ifdef __CPU26_DEBUG__
		124	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		125	#endif
		126	if (!ret) {
		127	dvs_installed = DVS_POWERNOW_K8;
		128	return dvs_installed;
		129	}
		130
		131	ret = cpufreq_gx_init();
		132	#ifdef __CPU26_DEBUG__
		133	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		134	#endif
		135	if (!ret) {
		136	dvs_installed = DVS_MEDIAGX_GEODE;
		137	return dvs_installed;
		138	}
		139
		140	ret = cpufreq_p4_init();
		141	#ifdef __CPU26_DEBUG__
		142	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		143	#endif
		144	if (!ret) {
		145	dvs_installed = DVS_P4_CLOCK_MOD;
		146	return dvs_installed;
		147	}
		148
		149	ret = centrino_init();
		150	#ifdef __CPU26_DEBUG__
		151	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		152	#endif
		153	if (!ret) {
		154	dvs_installed = DVS_SS_CENTRINO;
		155	return dvs_installed;
		156	}
		157
		158	ret = speedstep_ich_init();
		159	#ifdef __CPU26_DEBUG__
		160	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		161	#endif
		162	if (!ret) {
		163	dvs_installed = DVS_SS_ICH;
		164	return dvs_installed;
		165	}
		166
		167	/*ret = speedstep_smi_init();
		168	#ifdef __CPU26_DEBUG__
		169	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		170	#endif
		171	if (!ret) {
		172	dvs_installed = DVS_SS_SMI;
		173	return dvs_installed;
		174	}*/
		175
		176	return -1;
		177	}
		178
		179	int CPU26_closeDVS(void)
		180	{
		181	switch(dvs_installed) {
		182	case DVS_NONE:
		183	return -1;
		184	case DVS_POWERNOW_K6:
		185	powernow_k6_exit();
		186	return 0;
		187	case DVS_POWERNOW_K7:
		188	powernow_exit();
		189	return 0;
		190	case DVS_POWERNOW_K8:
		191	powernowk8_exit();
		192	return 0;
		193	case DVS_MEDIAGX_GEODE:
		194	cpufreq_gx_exit();
		195	return 0;
		196	case DVS_P4_CLOCK_MOD:
		197	cpufreq_p4_exit();
		198	return 0;
		199	case DVS_SS_CENTRINO:
		200	centrino_exit();
		201	return 0;
		202	case DVS_SS_ICH:
		203	speedstep_ich_exit();
		204	return 0;
		205	/*case DVS_SS_SMI:
		206	speedstep_smi_exit();
		207	return 0;*/
		208	}
		209
		210	dvs_installed = DVS_NONE;
		211	return 0;
		212	}

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(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c @ 623 - Rev 582