WebSVN – HelenOS – Diff – /tags/0.2.0.1/kernel/generic/src/cpu/cpu.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * 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.
 */
 
/**
 * @file    cpu.c
 * @brief   CPU subsystem initialization and listing.
 */
 
#include <cpu.h>
#include <arch.h>
#include <arch/cpu.h>
#include <mm/slab.h>
#include <mm/page.h>
#include <mm/frame.h>
#include <arch/types.h>
#include <config.h>
#include <panic.h>
#include <typedefs.h>
#include <memstr.h>
#include <adt/list.h>
#include <print.h>
 
cpu_t *cpus;
 
/** Initialize CPUs
 *
 * Initialize kernel CPUs support.
 *
 */
void cpu_init(void) {
    int i, j;
   
    #ifdef CONFIG_SMP
    if (config.cpu_active == 1) {
    #endif /* CONFIG_SMP */
        cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count,
                    FRAME_ATOMIC);
        if (!cpus)
            panic("malloc/cpus");
 
        /* initialize everything */
        memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0);
 
        for (i=0; i < config.cpu_count; i++) {
            cpus[i].stack = (__u8 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_PANIC)));
           
            cpus[i].id = i;
           
            spinlock_initialize(&cpus[i].lock, "cpu_t.lock");
 
            for (j = 0; j < RQ_COUNT; j++) {
                spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock");
                list_initialize(&cpus[i].rq[j].rq_head);
            }
        }
       
    #ifdef CONFIG_SMP
    }
    #endif /* CONFIG_SMP */
 
    CPU = &cpus[config.cpu_active-1];
   
    CPU->active = 1;
    CPU->tlb_active = 1;
   
    cpu_identify();
    cpu_arch_init();
}
 
/** List all processors. */
void cpu_list(void)
{
    int i;
 
    for (i = 0; i < config.cpu_count; i++) {
        if (cpus[i].active)
            cpu_print_report(&cpus[i]);
        else
            printf("cpu%d: not active\n", i);
    }
}
 

Rev 1965	Rev 1968
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/**	29	/**
30	* @file cpu.c	30	* @file cpu.c
31	* @brief CPU subsystem initialization and listing.	31	* @brief CPU subsystem initialization and listing.
32	*/	32	*/
33		33
34	#include <cpu.h>	34	#include <cpu.h>
35	#include <arch.h>	35	#include <arch.h>
36	#include <arch/cpu.h>	36	#include <arch/cpu.h>
37	#include <mm/slab.h>	37	#include <mm/slab.h>
38	#include <mm/page.h>	38	#include <mm/page.h>
39	#include <mm/frame.h>	39	#include <mm/frame.h>
40	#include <arch/types.h>	40	#include <arch/types.h>
41	#include <config.h>	41	#include <config.h>
42	#include <panic.h>	42	#include <panic.h>
43	#include <typedefs.h>	43	#include <typedefs.h>
44	#include <memstr.h>	44	#include <memstr.h>
45	#include <adt/list.h>	45	#include <adt/list.h>
46	#include <print.h>	46	#include <print.h>
47		47
48	cpu_t *cpus;	48	cpu_t *cpus;
49		49
50	/** Initialize CPUs	50	/** Initialize CPUs
51	*	51	*
52	* Initialize kernel CPUs support.	52	* Initialize kernel CPUs support.
53	*	53	*
54	*/	54	*/
55	void cpu_init(void) {	55	void cpu_init(void) {
56	int i, j;	56	int i, j;
57		57
58	#ifdef CONFIG_SMP	58	#ifdef CONFIG_SMP
59	if (config.cpu_active == 1) {	59	if (config.cpu_active == 1) {
60	#endif /* CONFIG_SMP */	60	#endif /* CONFIG_SMP */
61	cpus = (cpu_t ) malloc(sizeof(cpu_t) config.cpu_count,	61	cpus = (cpu_t ) malloc(sizeof(cpu_t) config.cpu_count,
62	FRAME_ATOMIC);	62	FRAME_ATOMIC);
63	if (!cpus)	63	if (!cpus)
64	panic("malloc/cpus");	64	panic("malloc/cpus");
65		65
66	/* initialize everything */	66	/* initialize everything */
67	memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0);	67	memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0);
68		68
69	for (i=0; i < config.cpu_count; i++) {	69	for (i=0; i < config.cpu_count; i++) {
70	cpus[i].stack = (__u8 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA \| FRAME_PANIC)));	70	cpus[i].stack = (__u8 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA \| FRAME_PANIC)));
71		71
72	cpus[i].id = i;	72	cpus[i].id = i;
73		73
74	spinlock_initialize(&cpus[i].lock, "cpu_t.lock");	74	spinlock_initialize(&cpus[i].lock, "cpu_t.lock");
75		75
76	for (j = 0; j < RQ_COUNT; j++) {	76	for (j = 0; j < RQ_COUNT; j++) {
77	spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock");	77	spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock");
78	list_initialize(&cpus[i].rq[j].rq_head);	78	list_initialize(&cpus[i].rq[j].rq_head);
79	}	79	}
80	}	80	}
81		81
82	#ifdef CONFIG_SMP	82	#ifdef CONFIG_SMP
83	}	83	}
84	#endif /* CONFIG_SMP */	84	#endif /* CONFIG_SMP */
85		85
86	CPU = &cpus[config.cpu_active-1];	86	CPU = &cpus[config.cpu_active-1];
87		87
88	CPU->active = 1;	88	CPU->active = 1;
89	CPU->tlb_active = 1;	89	CPU->tlb_active = 1;
90		90
91	cpu_identify();	91	cpu_identify();
92	cpu_arch_init();	92	cpu_arch_init();
93	}	93	}
94		94
95	/** List all processors. */	95	/** List all processors. */
96	void cpu_list(void)	96	void cpu_list(void)
97	{	97	{
98	int i;	98	int i;
99		99
100	for (i = 0; i < config.cpu_count; i++) {	100	for (i = 0; i < config.cpu_count; i++) {
101	if (cpus[i].active)	101	if (cpus[i].active)
102	cpu_print_report(&cpus[i]);	102	cpu_print_report(&cpus[i]);
103	else	103	else
104	printf("cpu%d: not active\n", i);	104	printf("cpu%d: not active\n", i);
105	}	105	}
106	}	106	}
107		107

Subversion Repositories HelenOS

(root)/tags/0.2.0.1/kernel/generic/src/cpu/cpu.c – Rev 1965 → 1968