WebSVN – HelenOS-historic – Diff – /kernel/trunk/genarch/src/acpi/acpi.c



struct acpi_rsdp *acpi_rsdp = NULL;
struct acpi_rsdt *acpi_rsdt = NULL;
struct acpi_xsdt *acpi_xsdt = NULL;
 
struct acpi_signature_map signature_map[] = {
    { (uint8_t *)"APIC", (void *) &acpi_madt, "Multiple APIC Description Table" }
};
 
static int rsdp_check(uint8_t *rsdp) {
    struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp;
    uint8_t sum = 0;
    int i;
   
    for (i=0; i<20; i++)
        sum += rsdp[i];
       

       
    return !sum;
   
}
 
int acpi_sdt_check(uint8_t *sdt)
{
    struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt;
    uint8_t 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, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE);
    map_structure((uintptr_t) sdt, sdt->length);
}
 
static void configure_via_rsdt(void)
{
    int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(uint32_t);
   
    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 *) (unative_t) acpi_rsdt->entry[i];
       
            map_sdt(h);
            if (*((uint32_t *) &h->signature[0])==*((uint32_t *) &signature_map[j].signature[0])) {
                if (!acpi_sdt_check((uint8_t *) h))
                    goto next;
                *signature_map[j].sdt_ptr = h;
                printf("%#zx: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
            }
        }

    }
}
 
static void configure_via_xsdt(void)
{
    int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(uint64_t);
   
    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 *) ((uintptr_t) acpi_rsdt->entry[i]);
 
            map_sdt(h);
            if (*((uint32_t *) &h->signature[0])==*((uint32_t *) &signature_map[j].signature[0])) {
                if (!acpi_sdt_check((uint8_t *) h))
                    goto next;
                *signature_map[j].sdt_ptr = h;
                printf("%#zx: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description);
            }
        }

 
}
 
void acpi_init(void)
{
    uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) };
    int i, j, length[2] = { 1024, 128*1024 };
    uint64_t *sig = (uint64_t *) RSDP_SIGNATURE;
 
    /*
     * Find Root System Description Pointer
     * 1. search first 1K of EBDA
     * 2. search 128K starting at 0xe0000
     */
 
    addr[0] = (uint8_t *) PA2KA(ebda);
    for (i = (ebda ? 0 : 1); i < 2; i++) {
        for (j = 0; j < length[i]; j += 16) {
            if (*((uint64_t *) &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 *) (unative_t) acpi_rsdp->rsdt_address;
    if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) 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((uint8_t *) acpi_rsdt)) {
        printf("RSDT: %s\n", "bad checksum");
        return;
    }
    if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) {
        printf("XSDT: %s\n", "bad checksum");
        return;
    }
 
    if (acpi_xsdt) configure_via_xsdt();

Rev 1735	Rev 1780
Line 49...	Line 49...
49	struct acpi_rsdp *acpi_rsdp = NULL;	49	struct acpi_rsdp *acpi_rsdp = NULL;
50	struct acpi_rsdt *acpi_rsdt = NULL;	50	struct acpi_rsdt *acpi_rsdt = NULL;
51	struct acpi_xsdt *acpi_xsdt = NULL;	51	struct acpi_xsdt *acpi_xsdt = NULL;
52		52
53	struct acpi_signature_map signature_map[] = {	53	struct acpi_signature_map signature_map[] = {
54	{ (__u8 )"APIC", (void ) &acpi_madt, "Multiple APIC Description Table" }	54	{ (uint8_t )"APIC", (void ) &acpi_madt, "Multiple APIC Description Table" }
55	};	55	};
56		56
57	static int rsdp_check(__u8 *rsdp) {	57	static int rsdp_check(uint8_t *rsdp) {
58	struct acpi_rsdp r = (struct acpi_rsdp ) rsdp;	58	struct acpi_rsdp r = (struct acpi_rsdp ) rsdp;
59	__u8 sum = 0;	59	uint8_t sum = 0;
60	int i;	60	int i;
61		61
62	for (i=0; i<20; i++)	62	for (i=0; i<20; i++)
63	sum += rsdp[i];	63	sum += rsdp[i];
64		64
Line 73...	Line 73...
73		73
74	return !sum;	74	return !sum;
75		75
76	}	76	}
77		77
78	int acpi_sdt_check(__u8 *sdt)	78	int acpi_sdt_check(uint8_t *sdt)
79	{	79	{
80	struct acpi_sdt_header h = (struct acpi_sdt_header ) sdt;	80	struct acpi_sdt_header h = (struct acpi_sdt_header ) sdt;
81	__u8 sum = 0;	81	uint8_t sum = 0;
82	int i;	82	int i;
83		83
84	for (i=0; i<h->length; i++)	84	for (i=0; i<h->length; i++)
85	sum += sdt[i];	85	sum += sdt[i];
86		86
87	return !sum;	87	return !sum;
88	}	88	}
89		89
90	static void map_sdt(struct acpi_sdt_header *sdt)	90	static void map_sdt(struct acpi_sdt_header *sdt)
91	{	91	{
92	page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE);	92	page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE);
93	map_structure((__address) sdt, sdt->length);	93	map_structure((uintptr_t) sdt, sdt->length);
94	}	94	}
95		95
96	static void configure_via_rsdt(void)	96	static void configure_via_rsdt(void)
97	{	97	{
98	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(uint32_t);
99		99
100	for (i=0; i<cnt; i++) {	100	for (i=0; i<cnt; i++) {
101	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++) {
102	struct acpi_sdt_header h = (struct acpi_sdt_header ) (__native) acpi_rsdt->entry[i];	102	struct acpi_sdt_header h = (struct acpi_sdt_header ) (unative_t) acpi_rsdt->entry[i];
103		103
104	map_sdt(h);	104	map_sdt(h);
105	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {	105	if (((uint32_t ) &h->signature[0])==((uint32_t ) &signature_map[j].signature[0])) {
106	if (!acpi_sdt_check((__u8 *) h))	106	if (!acpi_sdt_check((uint8_t *) h))
107	goto next;	107	goto next;
108	*signature_map[j].sdt_ptr = h;	108	*signature_map[j].sdt_ptr = h;
109	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);
110	}	110	}
111	}	111	}
Line 114...	Line 114...
114	}	114	}
115	}	115	}
116		116
117	static void configure_via_xsdt(void)	117	static void configure_via_xsdt(void)
118	{	118	{
119	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(uint64_t);
120		120
121	for (i=0; i<cnt; i++) {	121	for (i=0; i<cnt; i++) {
122	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++) {
123	struct acpi_sdt_header h = (struct acpi_sdt_header ) ((__address) acpi_rsdt->entry[i]);	123	struct acpi_sdt_header h = (struct acpi_sdt_header ) ((uintptr_t) acpi_rsdt->entry[i]);
124		124
125	map_sdt(h);	125	map_sdt(h);
126	if (((__u32 ) &h->signature[0])==((__u32 ) &signature_map[j].signature[0])) {	126	if (((uint32_t ) &h->signature[0])==((uint32_t ) &signature_map[j].signature[0])) {
127	if (!acpi_sdt_check((__u8 *) h))	127	if (!acpi_sdt_check((uint8_t *) h))
128	goto next;	128	goto next;
129	*signature_map[j].sdt_ptr = h;	129	*signature_map[j].sdt_ptr = h;
130	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);
131	}	131	}
132	}	132	}
Line 136...	Line 136...
136		136
137	}	137	}
138		138
139	void acpi_init(void)	139	void acpi_init(void)
140	{	140	{
141	__u8 addr[2] = { NULL, (__u8 ) PA2KA(0xe0000) };	141	uint8_t addr[2] = { NULL, (uint8_t ) PA2KA(0xe0000) };
142	int i, j, length[2] = { 1024, 128*1024 };	142	int i, j, length[2] = { 1024, 128*1024 };
143	__u64 sig = (__u64 ) RSDP_SIGNATURE;	143	uint64_t sig = (uint64_t ) RSDP_SIGNATURE;
144		144
145	/*	145	/*
146	* Find Root System Description Pointer	146	* Find Root System Description Pointer
147	* 1. search first 1K of EBDA	147	* 1. search first 1K of EBDA
148	* 2. search 128K starting at 0xe0000	148	* 2. search 128K starting at 0xe0000
149	*/	149	*/
150		150
151	addr[0] = (__u8 *) PA2KA(ebda);	151	addr[0] = (uint8_t *) PA2KA(ebda);
152	for (i = (ebda ? 0 : 1); i < 2; i++) {	152	for (i = (ebda ? 0 : 1); i < 2; i++) {
153	for (j = 0; j < length[i]; j += 16) {	153	for (j = 0; j < length[i]; j += 16) {
154	if (((__u64 ) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {	154	if (((uint64_t ) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) {
155	acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];	155	acpi_rsdp = (struct acpi_rsdp *) &addr[i][j];
156	goto rsdp_found;	156	goto rsdp_found;
157	}	157	}
158	}	158	}
159	}	159	}
Line 161...	Line 161...
161	return;	161	return;
162		162
163	rsdp_found:	163	rsdp_found:
164	printf("%#zx: ACPI Root System Description Pointer\n", acpi_rsdp);	164	printf("%#zx: ACPI Root System Description Pointer\n", acpi_rsdp);
165		165
166	acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address;	166	acpi_rsdt = (struct acpi_rsdt *) (unative_t) acpi_rsdp->rsdt_address;
167	if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address);	167	if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address);
168		168
169	if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);	169	if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt);
170	if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);	170	if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt);
171		171
172	if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) {	172	if (acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) {
173	printf("RSDT: %s\n", "bad checksum");	173	printf("RSDT: %s\n", "bad checksum");
174	return;	174	return;
175	}	175	}
176	if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) {	176	if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) {
177	printf("XSDT: %s\n", "bad checksum");	177	printf("XSDT: %s\n", "bad checksum");
178	return;	178	return;
179	}	179	}
180		180
181	if (acpi_xsdt) configure_via_xsdt();	181	if (acpi_xsdt) configure_via_xsdt();

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/acpi/acpi.c – Rev 1735 → 1780