WebSVN - shark - Blame - Rev 1063 - /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
1063	tullio	19	/*
		20	* This program is free software; you can redistribute it and/or modify
		21	* it under the terms of the GNU General Public License as published by
		22	* the Free Software Foundation; either version 2 of the License, or
		23	* (at your option) any later version.
		24	*
		25	* This program is distributed in the hope that it will be useful,
		26	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		27	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		28	* GNU General Public License for more details.
		29	*
		30	* You should have received a copy of the GNU General Public License
		31	* along with this program; if not, write to the Free Software
		32	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		33	*
		34	*/
		35
582	mauro	36	#include <kernel/func.h>
		37	#include "../include/drivers/shark_cpu26.h"
782	giacomo	38	#include <tracer.h>
582	mauro	39
775	mauro	40	//#define __CPU26_DEBUG__
582	mauro	41
		42	/* CPU Initialization */
		43	extern void early_cpu_init(void);
		44	extern void identify_cpu_0(void);
		45	extern void print_cpu_info_0(void);
		46
		47	/* AMD K6 PowerNow */
		48	extern int powernow_k6_init(void);
		49	extern void powernow_k6_exit(void);
		50	/* AMD K7 PowerNow */
		51	extern int powernow_init(void);
		52	extern void powernow_exit(void);
		53	/* AMD K8 PowerNow */
		54	extern int powernowk8_init(void);
		55	extern void powernowk8_exit(void);
		56	/* Cyrix MediaGX - NatSemi Geode */
		57	extern int cpufreq_gx_init(void);
		58	extern void cpufreq_gx_exit(void);
		59	/* Pentium4 clock modulation/speed scaling */
		60	extern int cpufreq_p4_init(void);
		61	extern void cpufreq_p4_exit(void);
		62	/* PentiumM/Centrino SpeedStep */
		63	extern int centrino_init(void);
		64	extern void centrino_exit(void);
		65	/* Pentium ICH SpeedStep */
		66	extern int speedstep_ich_init(void);
		67	extern void speedstep_ich_exit(void);
		68	/* Pentium SMI SpeedStep */
		69	/*extern int speedstep_smi_init(void);
		70	extern void speedstep_smi_exit(void);*/
		71
597	mauro	72	/* DVS function */
		73	extern int cpufreq_target(unsigned int target_freq, unsigned int relation);
		74	extern int cpufreq_get_cur_freq(void);
		75	extern int cpufreq_get_min_freq(void);
		76	extern int cpufreq_get_max_freq(void);
		77	extern int cpufreq_get_latency(void);
775	mauro	78	extern int cpufreq_get_available_freqs(int *buf);
770	mauro	79	extern int cpufreq_show_available_freqs(char *buf);
597	mauro	80
582	mauro	81	static int cpu_installed = FALSE;
		82	static int dvs_installed = DVS_NONE;
775	mauro	83	int cpu26_freqs[DVS_MAX_NUM_FREQS];
582	mauro	84
597	mauro	85	/* DVS user function */
782	giacomo	86
		87	extern unsigned int clk_per_msec;
		88
		89	int CPU26_set_frequency(unsigned int target_freq, unsigned int relation)
582	mauro	90	{
782	giacomo	91
		92	int res;
		93
789	giacomo	94	if (dvs_installed != DVS_NONE && dvs_installed != DVS_MEDIAGX_GEODE) {
		95	res = cpufreq_target(target_freq, relation);
		96	TRACER_LOGEVENT(FTrace_EVT_cycles_per_msec,0,clk_per_msec);
		97	return res;
		98	} else {
		99	return -1;
		100	}
782	giacomo	101
582	mauro	102	}
		103
789	giacomo	104	extern void gx_force_values(unsigned char on_duration, unsigned char off_duration);
		105
		106	int CPU26_set_suspend_modulation(unsigned char on_duration, unsigned char off_duration) {
		107
		108	if (dvs_installed == DVS_MEDIAGX_GEODE) {
		109	gx_force_values(on_duration, off_duration);
		110	return 0;
		111	}
		112
		113	return -1;
		114
		115	}
		116
770	mauro	117	inline int CPU26_get_cur_frequency()
582	mauro	118	{
597	mauro	119	return cpufreq_get_cur_freq();
582	mauro	120	}
		121
770	mauro	122	inline int CPU26_get_min_frequency()
582	mauro	123	{
597	mauro	124	return cpufreq_get_min_freq();
		125	}
582	mauro	126
770	mauro	127	inline int CPU26_get_max_frequency()
597	mauro	128	{
		129	return cpufreq_get_max_freq();
582	mauro	130	}
		131
779	giacomo	132	inline int CPU26_get_frequencies(int *buf)
582	mauro	133	{
775	mauro	134	return cpufreq_get_available_freqs (buf);
		135	}
		136
779	giacomo	137	inline int CPU26_show_frequencies(char *buf)
775	mauro	138	{
770	mauro	139	return cpufreq_show_available_freqs (buf);
		140	}
		141
		142	inline int CPU26_get_latency()
		143	{
597	mauro	144	return cpufreq_get_latency();
582	mauro	145	}
		146
845	mauro	147	inline int CPU26_DVS_installed(void)
582	mauro	148	{
779	giacomo	149	return dvs_installed;
		150	}
		151
		152	int CPU26_DVS_init(void)
		153	{
582	mauro	154	int ret = 0;
		155
		156	if (cpu_installed == FALSE)
		157	return -1;
		158
		159	if (dvs_installed != DVS_NONE)
		160	return 0;
		161
		162	ret = powernow_k6_init();
		163	#ifdef __CPU26_DEBUG__
		164	printk(KERN_DEBUG "Check PowerNow! K6 - Returned: %d\n", ret);
		165	#endif
		166	if (!ret) {
		167	dvs_installed = DVS_POWERNOW_K6;
		168	return dvs_installed;
		169	}
		170
		171	ret = powernow_init();
		172	#ifdef __CPU26_DEBUG__
		173	printk(KERN_DEBUG "Check PowerNow! K7 - Returned: %d\n", ret);
		174	#endif
		175	if (!ret) {
		176	dvs_installed = DVS_POWERNOW_K7;
		177	return dvs_installed;
		178	}
		179
		180	ret = powernowk8_init();
		181	#ifdef __CPU26_DEBUG__
		182	printk(KERN_DEBUG "Check PowerNow! K8 - Returned: %d\n", ret);
		183	#endif
		184	if (!ret) {
		185	dvs_installed = DVS_POWERNOW_K8;
		186	return dvs_installed;
		187	}
		188
		189	ret = cpufreq_gx_init();
		190	#ifdef __CPU26_DEBUG__
		191	printk(KERN_DEBUG "Check MediaGX/Geode (Returned: %d)\n", ret);
		192	#endif
		193	if (!ret) {
		194	dvs_installed = DVS_MEDIAGX_GEODE;
		195	return dvs_installed;
		196	}
		197
		198	ret = cpufreq_p4_init();
		199	#ifdef __CPU26_DEBUG__
		200	printk(KERN_DEBUG "Check Pentium4 ClockModulation (Returned: %d)\n", ret);
		201	#endif
		202	if (!ret) {
		203	dvs_installed = DVS_P4_CLOCK_MOD;
		204	return dvs_installed;
		205	}
		206
		207	ret = centrino_init();
		208	#ifdef __CPU26_DEBUG__
		209	printk(KERN_DEBUG "Check SpeedStep Centrino (Returned: %d)\n", ret);
		210	#endif
		211	if (!ret) {
		212	dvs_installed = DVS_SS_CENTRINO;
		213	return dvs_installed;
		214	}
		215
		216	ret = speedstep_ich_init();
		217	#ifdef __CPU26_DEBUG__
		218	printk(KERN_DEBUG "Check SpeedStep ICH (Returned: %d)\n", ret);
		219	#endif
		220	if (!ret) {
		221	dvs_installed = DVS_SS_ICH;
		222	return dvs_installed;
		223	}
		224
		225	/*ret = speedstep_smi_init();
		226	#ifdef __CPU26_DEBUG__
		227	printk(KERN_DEBUG "Check SpeedStep SMI (Returned: %d)\n", ret);
		228	#endif
		229	if (!ret) {
		230	dvs_installed = DVS_SS_SMI;
		231	return dvs_installed;
		232	}*/
		233
		234	return -1;
		235	}
		236
779	giacomo	237	int CPU26_DVS_close(void)
582	mauro	238	{
		239	switch(dvs_installed) {
		240	case DVS_NONE:
		241	return -1;
		242	case DVS_POWERNOW_K6:
		243	powernow_k6_exit();
		244	return 0;
		245	case DVS_POWERNOW_K7:
		246	powernow_exit();
		247	return 0;
		248	case DVS_POWERNOW_K8:
		249	powernowk8_exit();
		250	return 0;
		251	case DVS_MEDIAGX_GEODE:
		252	cpufreq_gx_exit();
		253	return 0;
		254	case DVS_P4_CLOCK_MOD:
		255	cpufreq_p4_exit();
		256	return 0;
		257	case DVS_SS_CENTRINO:
		258	centrino_exit();
		259	return 0;
		260	case DVS_SS_ICH:
		261	speedstep_ich_exit();
		262	return 0;
		263	/*case DVS_SS_SMI:
		264	speedstep_smi_exit();
		265	return 0;*/
		266	}
		267
		268	dvs_installed = DVS_NONE;
		269	return 0;
		270	}
597	mauro	271
		272	/* Init the Linux CPU Layer */
770	mauro	273	inline int CPU26_installed(void)
597	mauro	274	{
		275	return cpu_installed;
		276	}
		277
770	mauro	278	inline void CPU26_showinfo(void)
597	mauro	279	{
		280	print_cpu_info_0();
		281	}
		282
		283	int CPU26_init(void)
		284	{
		285	int ret = 0;
		286
		287	if (cpu_installed == TRUE) return 0;
		288
		289	early_cpu_init();
		290
		291	identify_cpu_0();
		292
		293	printk(KERN_INFO);
		294	print_cpu_info_0();
		295
		296	cpu_installed = TRUE;
		297
		298	return ret;
		299	}
		300
770	mauro	301	inline int CPU26_close(void)
597	mauro	302	{
		303	if (cpu_installed == TRUE) {
		304	return 0;
		305	} else
		306	return -1;
		307	}

Subversion Repositories shark

(root)/shark/trunk/drivers/cpu/shark/shark_cpu.c @ 1076 - Rev 1063