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Add support for parsing MCFG tables.

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This commit is contained in:
Scott Long 2005-02-14 11:21:48 +00:00
parent 6c23e6cc5a
commit a47e681b24
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=141905
2 changed files with 36 additions and 0 deletions
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24
usr.sbin/acpi/acpidump/acpi.c
View File

@ -376,6 +376,28 @@ acpi_handle_ecdt(struct ACPIsdt *sdp)
printf(END_COMMENT);
}
static void
acpi_handle_mcfg(struct ACPIsdt *sdp)
{
struct MCFGbody *mcfg;
u_int i, e;
printf(BEGIN_COMMENT);
acpi_print_sdt(sdp);
mcfg = (struct MCFGbody *) sdp->body;
e = (sdp->len - ((caddr_t)&mcfg->s[0] - (caddr_t)sdp)) /
sizeof(*mcfg->s);
for (i = 0; i < e; i++, mcfg++) {
printf("\n");
printf("\tBase Address= 0x%016jx\n", mcfg->s[i].baseaddr);
printf("\tSegment Group= 0x%04x\n", mcfg->s[i].seg_grp);
printf("\tStart Bus= %d\n", mcfg->s[i].start);
printf("\tEnd Bus= %d\n", mcfg->s[i].end);
}
printf(END_COMMENT);
}
static void
acpi_print_sdt(struct ACPIsdt *sdp)
{
@ -683,6 +705,8 @@ acpi_handle_rsdt(struct ACPIsdt *rsdp)
acpi_handle_hpet(sdp);
else if (!memcmp(sdp->signature, "ECDT", 4))
acpi_handle_ecdt(sdp);
else if (!memcmp(sdp->signature, "MCFG", 4))
acpi_handle_mcfg(sdp);
else {
printf(BEGIN_COMMENT);
acpi_print_sdt(sdp);

12
usr.sbin/acpi/acpidump/acpidump.h
View File

@ -293,6 +293,18 @@ struct ECDTbody {
u_char ec_id[1]; /* Variable length name string */
} __packed;
/* Memory Mapped PCI config space base allocation structure */
struct MCFGbody {
uint8_t rsvd[8];
struct {
uint64_t baseaddr; /* Base Address */
uint16_t seg_grp; /* Segment group number */
uint8_t start; /* Starting bus number */
uint8_t end; /* Ending bus number */
uint8_t rsvd[4]; /* Reserved */
} s[];
} __packed;
/*
* Addresses to scan on ia32 for the RSD PTR. According to section 5.2.2
* of the ACPI spec, we only consider two regions for the base address: