WebSVN – HelenOS – Diff – /tags/0.2.0.1/kernel/genarch/src/acpi/acpi.c


/*
 * Copyright (C) 2005 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    acpi.c
 * @brief   Advanced Configuration and Power Interface (ACPI) initialization.
 */
 
#include <genarch/acpi/acpi.h>
#include <genarch/acpi/madt.h>
#include <arch/bios/bios.h>
#include <mm/as.h>
#include <mm/page.h>
#include <print.h>
 
#define RSDP_SIGNATURE      "RSD PTR "
#define RSDP_REVISION_OFFS  15
 
struct acpi_rsdp *acpi_rsdp = NULL;
struct acpi_rsdt *acpi_rsdt = NULL;
struct acpi_xsdt *acpi_xsdt = NULL;
 
struct acpi_signature_map signature_map[] = {
    { (__u8 *)"APIC", (void *) &acpi_madt, "Multiple APIC Description Table" }
};
 
static int rsdp_check(__u8 *rsdp) {
    struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp;
    __u8 sum = 0;
    int i;
   
    for (i=0; i<20; i++)
        sum += rsdp[i];
       
    if (sum)   
        return 0; /* bad checksum */
 
    if (r->revision == 0)
        return 1; /* ACPI 1.0 */
       
    for (; i<r->length; i++)
        sum += rsdp[i];
       
    return !sum;
   
}
 
int acpi_sdt_check(__u8 *sdt)
{
    struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt;
    __u8 sum = 0;
    int i;
 
    for (i=0; i<h->length; i++)
        sum += sdt[i];
       
    return !sum;
}
 
static void map_sdt(struct acpi_sdt_header *sdt)
{
    page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE);
    map_structure((__address) sdt, sdt->length);
}
 
static void configure_via_rsdt(void)
{
    int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32);
   
    for (i=0; i<cnt; i++) {
        for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {
            struct acpi_sdt_header *h = (struct acpi_sdt_header *) (__native) acpi_rsdt->entry[i];
       
            map_sdt(h);
            if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) {
                if (!acpi_sdt_check((__u8 *) h))
                    goto next;
                *signature_map[j].sdt_ptr = h;
                printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
            }
        }
next:
        ;
    }
}
 
static void configure_via_xsdt(void)
{
    int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64);
   
    for (i=0; i<cnt; i++) {
        for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {
            struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((__address) acpi_rsdt->entry[i]);
 
            map_sdt(h);
            if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) {
                if (!acpi_sdt_check((__u8 *) h))
                    goto next;
                *signature_map[j].sdt_ptr = h;
                printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
            }
        }
next:
        ;
    }
 
}
 
void acpi_init(void)
{
    __u8 *addr[2] = { NULL, (__u8 *) PA2KA(0xe0000) };
    int i, j, length[2] = { 1024, 128*1024 };
    __u64 *sig = (__u64 *) RSDP_SIGNATURE;
 
    /*
     * Find Root System Description Pointer
     * 1. search first 1K of EBDA
     * 2. search 128K starting at 0xe0000
     */
 
    addr[0] = (__u8 *) PA2KA(ebda);
    for (i = (ebda ? 0 : 1); i < 2; i++) {
        for (j = 0; j < length[i]; j += 16) {
            if (*((__u64 *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {
                acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];
                goto rsdp_found;
            }
        }
    }
 
    return;
 
rsdp_found:
    printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp);
 
    acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address;
    if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address);
 
    if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);
    if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);  
 
    if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) {
        printf("RSDT: %s\n", "bad checksum");
        return;
    }
    if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) {
        printf("XSDT: %s\n", "bad checksum");
        return;
    }
 
    if (acpi_xsdt) configure_via_xsdt();
    else if (acpi_rsdt) configure_via_rsdt();
 
}
 
 

Subversion Repositories HelenOS

(root)/tags/0.2.0.1/kernel/genarch/src/acpi/acpi.c – Rev 1965 → 1968

Rev 1965		Rev 1968
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 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 acpi.c	30	* @file acpi.c
31	* @brief Advanced Configuration and Power Interface (ACPI) initialization.	31	* @brief Advanced Configuration and Power Interface (ACPI) initialization.
32	*/	32	*/
33		33
34	#include <genarch/acpi/acpi.h>	34	#include <genarch/acpi/acpi.h>
35	#include <genarch/acpi/madt.h>	35	#include <genarch/acpi/madt.h>
36	#include <arch/bios/bios.h>	36	#include <arch/bios/bios.h>
37	#include <mm/as.h>	37	#include <mm/as.h>
38	#include <mm/page.h>	38	#include <mm/page.h>
39	#include <print.h>	39	#include <print.h>
40		40
41	#define RSDP_SIGNATURE "RSD PTR "	41	#define RSDP_SIGNATURE "RSD PTR "
42	#define RSDP_REVISION_OFFS 15	42	#define RSDP_REVISION_OFFS 15
43		43
44	struct acpi_rsdp *acpi_rsdp = NULL;	44	struct acpi_rsdp *acpi_rsdp = NULL;
45	struct acpi_rsdt *acpi_rsdt = NULL;	45	struct acpi_rsdt *acpi_rsdt = NULL;
46	struct acpi_xsdt *acpi_xsdt = NULL;	46	struct acpi_xsdt *acpi_xsdt = NULL;
47		47
48	struct acpi_signature_map signature_map[] = {	48	struct acpi_signature_map signature_map[] = {
49	{ (__u8 )"APIC", (void ) &acpi_madt, "Multiple APIC Description Table" }	49	{ (__u8 )"APIC", (void ) &acpi_madt, "Multiple APIC Description Table" }
50	};	50	};
51		51
52	static int rsdp_check(__u8 *rsdp) {	52	static int rsdp_check(__u8 *rsdp) {
53	struct acpi_rsdp r = (struct acpi_rsdp ) rsdp;	53	struct acpi_rsdp r = (struct acpi_rsdp ) rsdp;
54	__u8 sum = 0;	54	__u8 sum = 0;
55	int i;	55	int i;
56		56
57	for (i=0; i<20; i++)	57	for (i=0; i<20; i++)
58	sum += rsdp[i];	58	sum += rsdp[i];
59		59
60	if (sum)	60	if (sum)
61	return 0; /* bad checksum */	61	return 0; /* bad checksum */
62		62
63	if (r->revision == 0)	63	if (r->revision == 0)
64	return 1; /* ACPI 1.0 */	64	return 1; /* ACPI 1.0 */
65		65
66	for (; i<r->length; i++)	66	for (; i<r->length; i++)
67	sum += rsdp[i];	67	sum += rsdp[i];
68		68
69	return !sum;	69	return !sum;
70		70
71	}	71	}
72		72
73	int acpi_sdt_check(__u8 *sdt)	73	int acpi_sdt_check(__u8 *sdt)
74	{	74	{
75	struct acpi_sdt_header h = (struct acpi_sdt_header ) sdt;	75	struct acpi_sdt_header h = (struct acpi_sdt_header ) sdt;
76	__u8 sum = 0;	76	__u8 sum = 0;
77	int i;	77	int i;
78		78
79	for (i=0; i<h->length; i++)	79	for (i=0; i<h->length; i++)
80	sum += sdt[i];	80	sum += sdt[i];
81		81
82	return !sum;	82	return !sum;
83	}	83	}
84		84
85	static void map_sdt(struct acpi_sdt_header *sdt)	85	static void map_sdt(struct acpi_sdt_header *sdt)
86	{	86	{
87	page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE);	87	page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE);
88	map_structure((__address) sdt, sdt->length);	88	map_structure((__address) sdt, sdt->length);
89	}	89	}
90		90
91	static void configure_via_rsdt(void)	91	static void configure_via_rsdt(void)
92	{	92	{
93	int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32);	93	int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32);
94		94
95	for (i=0; i<cnt; i++) {	95	for (i=0; i<cnt; i++) {
96	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {	96	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {
97	struct acpi_sdt_header h = (struct acpi_sdt_header ) (__native) acpi_rsdt->entry[i];	97	struct acpi_sdt_header h = (struct acpi_sdt_header ) (__native) acpi_rsdt->entry[i];
98		98
99	map_sdt(h);	99	map_sdt(h);
100	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {	100	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {
101	if (!acpi_sdt_check((__u8 *) h))	101	if (!acpi_sdt_check((__u8 *) h))
102	goto next;	102	goto next;
103	*signature_map[j].sdt_ptr = h;	103	*signature_map[j].sdt_ptr = h;
104	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);	104	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
105	}	105	}
106	}	106	}
107	next:	107	next:
108	;	108	;
109	}	109	}
110	}	110	}
111		111
112	static void configure_via_xsdt(void)	112	static void configure_via_xsdt(void)
113	{	113	{
114	int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64);	114	int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64);
115		115
116	for (i=0; i<cnt; i++) {	116	for (i=0; i<cnt; i++) {
117	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {	117	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {
118	struct acpi_sdt_header h = (struct acpi_sdt_header ) ((__address) acpi_rsdt->entry[i]);	118	struct acpi_sdt_header h = (struct acpi_sdt_header ) ((__address) acpi_rsdt->entry[i]);
119		119
120	map_sdt(h);	120	map_sdt(h);
121	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {	121	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {
122	if (!acpi_sdt_check((__u8 *) h))	122	if (!acpi_sdt_check((__u8 *) h))
123	goto next;	123	goto next;
124	*signature_map[j].sdt_ptr = h;	124	*signature_map[j].sdt_ptr = h;
125	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);	125	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
126	}	126	}
127	}	127	}
128	next:	128	next:
129	;	129	;
130	}	130	}
131		131
132	}	132	}
133		133
134	void acpi_init(void)	134	void acpi_init(void)
135	{	135	{
136	__u8 addr[2] = { NULL, (__u8 ) PA2KA(0xe0000) };	136	__u8 addr[2] = { NULL, (__u8 ) PA2KA(0xe0000) };
137	int i, j, length[2] = { 1024, 128*1024 };	137	int i, j, length[2] = { 1024, 128*1024 };
138	__u64 sig = (__u64 ) RSDP_SIGNATURE;	138	__u64 sig = (__u64 ) RSDP_SIGNATURE;
139		139
140	/*	140	/*
141	* Find Root System Description Pointer	141	* Find Root System Description Pointer
142	* 1. search first 1K of EBDA	142	* 1. search first 1K of EBDA
143	* 2. search 128K starting at 0xe0000	143	* 2. search 128K starting at 0xe0000
144	*/	144	*/
145		145
146	addr[0] = (__u8 *) PA2KA(ebda);	146	addr[0] = (__u8 *) PA2KA(ebda);
147	for (i = (ebda ? 0 : 1); i < 2; i++) {	147	for (i = (ebda ? 0 : 1); i < 2; i++) {
148	for (j = 0; j < length[i]; j += 16) {	148	for (j = 0; j < length[i]; j += 16) {
149	if (((__u64 ) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {	149	if (((__u64 ) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {
150	acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];	150	acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];
151	goto rsdp_found;	151	goto rsdp_found;
152	}	152	}
153	}	153	}
154	}	154	}
155		155
156	return;	156	return;
157		157
158	rsdp_found:	158	rsdp_found:
159	printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp);	159	printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp);
160		160
161	acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address;	161	acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address;
162	if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address);	162	if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address);
163		163
164	if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);	164	if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);
165	if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);	165	if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);
166		166
167	if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) {	167	if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) {
168	printf("RSDT: %s\n", "bad checksum");	168	printf("RSDT: %s\n", "bad checksum");
169	return;	169	return;
170	}	170	}
171	if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) {	171	if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) {
172	printf("XSDT: %s\n", "bad checksum");	172	printf("XSDT: %s\n", "bad checksum");
173	return;	173	return;
174	}	174	}
175		175
176	if (acpi_xsdt) configure_via_xsdt();	176	if (acpi_xsdt) configure_via_xsdt();
177	else if (acpi_rsdt) configure_via_rsdt();	177	else if (acpi_rsdt) configure_via_rsdt();
178		178
179	}	179	}
180		180
181		181