WebSVN – HelenOS – Diff – /branches/sparc/kernel/arch/sparc64/src/cpu/sun4v/cpu.c


/*
 * Copyright (c) 2005 Jakub Jermar
 * Copyright (c) 2009 Pavel Rimsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup sparc64
 * @{
 */
/** @file
 */
 
 
#include <cpu.h>
#include <arch.h>
#include <genarch/ofw/ofw_tree.h>
#include <arch/drivers/tick.h>
#include <print.h>
#include <arch/cpu_node.h>
#include <arch/sun4v/md.h>
#include <arch/sun4v/hypercall.h>
 
/** Perform sparc64 specific initialization of the processor structure for the
 * current processor.
 */
void cpu_arch_init(void)
{
    uint64_t myid;
    __hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid);
 
    CPU->arch.id = myid;
 
    md_node_t node = md_get_root();
 
    /* walk through MD, find the current CPU node & its clock-frequency */
    while (true) {
 
        if (!md_next_node(&node, "cpu")) {
            panic("Could not determine CPU frequency.");
        }
 
        uint64_t id = 0;
        md_get_integer_property(node, "id", &id);
        if (id == myid) {
            uint64_t clock_frequency = 0;
            md_get_integer_property(node, "clock-frequency",
                &clock_frequency);
            CPU->arch.clock_frequency = clock_frequency;
            break;
        }
    }
 
    tick_init();
}
 
/**
 * Implemented as an empty function as accessing the VER register is
 * a hyperprivileged operation on sun4v.
 */
void cpu_identify(void)
{
}
 
/** Print version information for a processor.
 *
 * This function is called by the bootstrap processor.
 *
 * @param m Processor structure of the CPU for which version information is to
 *  be printed.
 */
void cpu_print_report(cpu_t *m)
{
    printf("cpu%d: Niagara (%d MHz)\n", m->id,
        m->arch.clock_frequency / 1000000);
}
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/branches/sparc/kernel/arch/sparc64/src/cpu/sun4v/cpu.c – Rev 3798 → 3862

Rev 3798		Rev 3862
1	/*	1	/*
2	* Copyright (c) 2005 Jakub Jermar	2	* Copyright (c) 2005 Jakub Jermar
3	* Copyright (c) 2009 Pavel Rimsky	3	* Copyright (c) 2009 Pavel Rimsky
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	/** @addtogroup sparc64	30	/** @addtogroup sparc64
31	* @{	31	* @{
32	*/	32	*/
33	/** @file	33	/** @file
34	*/	34	*/
35		35
36	#include <arch/cpu_family.h>	-
37	#include <cpu.h>	36	#include <cpu.h>
38	#include <arch.h>	37	#include <arch.h>
39	#include <genarch/ofw/ofw_tree.h>	38	#include <genarch/ofw/ofw_tree.h>
40	#include <arch/drivers/tick.h>	39	#include <arch/drivers/tick.h>
41	#include <print.h>	40	#include <print.h>
42	#include <arch/cpu_node.h>	41	#include <arch/cpu_node.h>
43	#include <arch/sun4v/md.h>	42	#include <arch/sun4v/md.h>
44	#include <arch/sun4v/hypercall.h>	43	#include <arch/sun4v/hypercall.h>
45		44
46	/** Perform sparc64 specific initialization of the processor structure for the	45	/** Perform sparc64 specific initialization of the processor structure for the
47	* current processor.	46	* current processor.
48	*/	47	*/
49	void cpu_arch_init(void)	48	void cpu_arch_init(void)
50	{	49	{
51	uint64_t myid;	50	uint64_t myid;
52	__hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid);	51	__hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid);
53		52
54	CPU->arch.id = myid;	53	CPU->arch.id = myid;
55		54
56	md_node_t node = md_get_root();	55	md_node_t node = md_get_root();
57		56
58	/* walk through MD, find the current CPU node & its clock-frequency */	57	/* walk through MD, find the current CPU node & its clock-frequency */
59	while (true) {	58	while (true) {
60		59
61	if (!md_next_node(&node, "cpu")) {	60	if (!md_next_node(&node, "cpu")) {
62	panic("Could not determine CPU frequency.");	61	panic("Could not determine CPU frequency.");
63	}	62	}
64		63
65	uint64_t id = 0;	64	uint64_t id = 0;
66	md_get_integer_property(node, "id", &id);	65	md_get_integer_property(node, "id", &id);
67	if (id == myid) {	66	if (id == myid) {
68	uint64_t clock_frequency = 0;	67	uint64_t clock_frequency = 0;
69	md_get_integer_property(node, "clock-frequency",	68	md_get_integer_property(node, "clock-frequency",
70	&clock_frequency);	69	&clock_frequency);
71	CPU->arch.clock_frequency = clock_frequency;	70	CPU->arch.clock_frequency = clock_frequency;
72	break;	71	break;
73	}	72	}
74	}	73	}
75		74
76	tick_init();	75	tick_init();
77	}	76	}
78		77
79	/**	78	/**
80	* Implemented as an empty function as accessing the VER register is	79	* Implemented as an empty function as accessing the VER register is
81	* a hyperprivileged operation on sun4v.	80	* a hyperprivileged operation on sun4v.
82	*/	81	*/
83	void cpu_identify(void)	82	void cpu_identify(void)
84	{	83	{
85	}	84	}
86		85
87	/** Print version information for a processor.	86	/** Print version information for a processor.
88	*	87	*
89	* This function is called by the bootstrap processor.	88	* This function is called by the bootstrap processor.
90	*	89	*
91	* @param m Processor structure of the CPU for which version information is to	90	* @param m Processor structure of the CPU for which version information is to
92	* be printed.	91	* be printed.
93	*/	92	*/
94	void cpu_print_report(cpu_t *m)	93	void cpu_print_report(cpu_t *m)
95	{	94	{
96	printf("cpu%d: Niagara (%d MHz)\n", m->id,	95	printf("cpu%d: Niagara (%d MHz)\n", m->id,
97	m->arch.clock_frequency / 1000000);	96	m->arch.clock_frequency / 1000000);
98	}	97	}
99		98
100	/** @}	99	/** @}
101	*/	100	*/
102		101