WebSVN – HelenOS-historic – Diff – /kernel/trunk/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.
 */
 
 
 /** @addtogroup genarch
 
 * @{
 */
 
/**
 * @file
 * @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-historic

(root)/kernel/trunk/genarch/src/acpi/acpi.c – Rev 1704 → 1705

Rev 1704		Rev 1705
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	/** @addtogroup genarch genarch	30	/** @addtogroup genarch
31	* @ingroup others	-
32	* @{	31	* @{
33	*/	32	*/
34		33
35	/**	34	/**
36	* @file	35	* @file
37	* @brief Advanced Configuration and Power Interface (ACPI) initialization.	36	* @brief Advanced Configuration and Power Interface (ACPI) initialization.
38	*/	37	*/
39		38
40	#include <genarch/acpi/acpi.h>	39	#include <genarch/acpi/acpi.h>
41	#include <genarch/acpi/madt.h>	40	#include <genarch/acpi/madt.h>
42	#include <arch/bios/bios.h>	41	#include <arch/bios/bios.h>
43	#include <mm/as.h>	42	#include <mm/as.h>
44	#include <mm/page.h>	43	#include <mm/page.h>
45	#include <print.h>	44	#include <print.h>
46		45
47	#define RSDP_SIGNATURE "RSD PTR "	46	#define RSDP_SIGNATURE "RSD PTR "
48	#define RSDP_REVISION_OFFS 15	47	#define RSDP_REVISION_OFFS 15
49		48
50	struct acpi_rsdp *acpi_rsdp = NULL;	49	struct acpi_rsdp *acpi_rsdp = NULL;
51	struct acpi_rsdt *acpi_rsdt = NULL;	50	struct acpi_rsdt *acpi_rsdt = NULL;
52	struct acpi_xsdt *acpi_xsdt = NULL;	51	struct acpi_xsdt *acpi_xsdt = NULL;
53		52
54	struct acpi_signature_map signature_map[] = {	53	struct acpi_signature_map signature_map[] = {
55	{ (__u8 )"APIC", (void ) &acpi_madt, "Multiple APIC Description Table" }	54	{ (__u8 )"APIC", (void ) &acpi_madt, "Multiple APIC Description Table" }
56	};	55	};
57		56
58	static int rsdp_check(__u8 *rsdp) {	57	static int rsdp_check(__u8 *rsdp) {
59	struct acpi_rsdp r = (struct acpi_rsdp ) rsdp;	58	struct acpi_rsdp r = (struct acpi_rsdp ) rsdp;
60	__u8 sum = 0;	59	__u8 sum = 0;
61	int i;	60	int i;
62		61
63	for (i=0; i<20; i++)	62	for (i=0; i<20; i++)
64	sum += rsdp[i];	63	sum += rsdp[i];
65		64
66	if (sum)	65	if (sum)
67	return 0; /* bad checksum */	66	return 0; /* bad checksum */
68		67
69	if (r->revision == 0)	68	if (r->revision == 0)
70	return 1; /* ACPI 1.0 */	69	return 1; /* ACPI 1.0 */
71		70
72	for (; i<r->length; i++)	71	for (; i<r->length; i++)
73	sum += rsdp[i];	72	sum += rsdp[i];
74		73
75	return !sum;	74	return !sum;
76		75
77	}	76	}
78		77
79	int acpi_sdt_check(__u8 *sdt)	78	int acpi_sdt_check(__u8 *sdt)
80	{	79	{
81	struct acpi_sdt_header h = (struct acpi_sdt_header ) sdt;	80	struct acpi_sdt_header h = (struct acpi_sdt_header ) sdt;
82	__u8 sum = 0;	81	__u8 sum = 0;
83	int i;	82	int i;
84		83
85	for (i=0; i<h->length; i++)	84	for (i=0; i<h->length; i++)
86	sum += sdt[i];	85	sum += sdt[i];
87		86
88	return !sum;	87	return !sum;
89	}	88	}
90		89
91	static void map_sdt(struct acpi_sdt_header *sdt)	90	static void map_sdt(struct acpi_sdt_header *sdt)
92	{	91	{
93	page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE);	92	page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE);
94	map_structure((__address) sdt, sdt->length);	93	map_structure((__address) sdt, sdt->length);
95	}	94	}
96		95
97	static void configure_via_rsdt(void)	96	static void configure_via_rsdt(void)
98	{	97	{
99	int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32);	98	int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32);
100		99
101	for (i=0; i<cnt; i++) {	100	for (i=0; i<cnt; i++) {
102	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {	101	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {
103	struct acpi_sdt_header h = (struct acpi_sdt_header ) (__native) acpi_rsdt->entry[i];	102	struct acpi_sdt_header h = (struct acpi_sdt_header ) (__native) acpi_rsdt->entry[i];
104		103
105	map_sdt(h);	104	map_sdt(h);
106	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {	105	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {
107	if (!acpi_sdt_check((__u8 *) h))	106	if (!acpi_sdt_check((__u8 *) h))
108	goto next;	107	goto next;
109	*signature_map[j].sdt_ptr = h;	108	*signature_map[j].sdt_ptr = h;
110	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);	109	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
111	}	110	}
112	}	111	}
113	next:	112	next:
114	;	113	;
115	}	114	}
116	}	115	}
117		116
118	static void configure_via_xsdt(void)	117	static void configure_via_xsdt(void)
119	{	118	{
120	int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64);	119	int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64);
121		120
122	for (i=0; i<cnt; i++) {	121	for (i=0; i<cnt; i++) {
123	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {	122	for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) {
124	struct acpi_sdt_header h = (struct acpi_sdt_header ) ((__address) acpi_rsdt->entry[i]);	123	struct acpi_sdt_header h = (struct acpi_sdt_header ) ((__address) acpi_rsdt->entry[i]);
125		124
126	map_sdt(h);	125	map_sdt(h);
127	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {	126	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {
128	if (!acpi_sdt_check((__u8 *) h))	127	if (!acpi_sdt_check((__u8 *) h))
129	goto next;	128	goto next;
130	*signature_map[j].sdt_ptr = h;	129	*signature_map[j].sdt_ptr = h;
131	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);	130	printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
132	}	131	}
133	}	132	}
134	next:	133	next:
135	;	134	;
136	}	135	}
137		136
138	}	137	}
139		138
140	void acpi_init(void)	139	void acpi_init(void)
141	{	140	{
142	__u8 addr[2] = { NULL, (__u8 ) PA2KA(0xe0000) };	141	__u8 addr[2] = { NULL, (__u8 ) PA2KA(0xe0000) };
143	int i, j, length[2] = { 1024, 128*1024 };	142	int i, j, length[2] = { 1024, 128*1024 };
144	__u64 sig = (__u64 ) RSDP_SIGNATURE;	143	__u64 sig = (__u64 ) RSDP_SIGNATURE;
145		144
146	/*	145	/*
147	* Find Root System Description Pointer	146	* Find Root System Description Pointer
148	* 1. search first 1K of EBDA	147	* 1. search first 1K of EBDA
149	* 2. search 128K starting at 0xe0000	148	* 2. search 128K starting at 0xe0000
150	*/	149	*/
151		150
152	addr[0] = (__u8 *) PA2KA(ebda);	151	addr[0] = (__u8 *) PA2KA(ebda);
153	for (i = (ebda ? 0 : 1); i < 2; i++) {	152	for (i = (ebda ? 0 : 1); i < 2; i++) {
154	for (j = 0; j < length[i]; j += 16) {	153	for (j = 0; j < length[i]; j += 16) {
155	if (((__u64 ) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {	154	if (((__u64 ) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {
156	acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];	155	acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];
157	goto rsdp_found;	156	goto rsdp_found;
158	}	157	}
159	}	158	}
160	}	159	}
161		160
162	return;	161	return;
163		162
164	rsdp_found:	163	rsdp_found:
165	printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp);	164	printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp);
166		165
167	acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address;	166	acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address;
168	if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address);	167	if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address);
169		168
170	if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);	169	if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);
171	if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);	170	if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);
172		171
173	if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) {	172	if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) {
174	printf("RSDT: %s\n", "bad checksum");	173	printf("RSDT: %s\n", "bad checksum");
175	return;	174	return;
176	}	175	}
177	if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) {	176	if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) {
178	printf("XSDT: %s\n", "bad checksum");	177	printf("XSDT: %s\n", "bad checksum");
179	return;	178	return;
180	}	179	}
181		180
182	if (acpi_xsdt) configure_via_xsdt();	181	if (acpi_xsdt) configure_via_xsdt();
183	else if (acpi_rsdt) configure_via_rsdt();	182	else if (acpi_rsdt) configure_via_rsdt();
184		183
185	}	184	}
186		185
187		186
188	/** @}	187	/** @}
189	*/	188	*/
190		189
191		190