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acpi: add MCFG table parsing

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This commit is contained in:
Alexander Boettcher 2012-11-19 14:02:49 +01:00 committed by Norman Feske
parent 002ea7cfc4
commit ba566a1530
1 changed files with 36 additions and 1 deletions
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37
os/src/drivers/acpi/acpi.cc
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@ -39,6 +39,17 @@ struct Apic_struct
Apic_struct *next() { return reinterpret_cast<Apic_struct *>((uint8_t *)this + length); }
} __attribute__((packed));
struct Mcfg_struct
{
uint64_t base;
uint16_t pci_seg;
uint8_t pci_bus_start;
uint8_t pci_bus_end;
uint32_t reserved;
Mcfg_struct *next() {
return reinterpret_cast<Mcfg_struct *>((uint8_t *)this + sizeof(*this)); }
} __attribute__((packed));
/* ACPI spec 5.2.12.5 */
struct Apic_override : Apic_struct
@ -68,6 +79,10 @@ struct Generic
/* MADT acpi structures */
Apic_struct *apic_struct() { return reinterpret_cast<Apic_struct *>(&creator_rev + 3); }
Apic_struct *end() { return reinterpret_cast<Apic_struct *>(signature + size); }
/* MCFG ACPI stucture */
Mcfg_struct *mcfg_struct() { return reinterpret_cast<Mcfg_struct *>(&creator_rev + 3); }
Mcfg_struct *mcfg_end() { return reinterpret_cast<Mcfg_struct *>(signature + size); }
} __attribute__((packed));
@ -186,6 +201,11 @@ class Table_wrapper
*/
bool is_madt() { return _cmp("APIC"); }
/**
* Is this a MCFG table
*/
bool is_mcfg() { return _cmp("MCFG"); }
/**
* Look for DSDT and SSDT tables
*/
@ -209,6 +229,15 @@ class Table_wrapper
}
}
void parse_mcfg() const
{
Mcfg_struct *mcfg = _table->mcfg_struct();
for (; mcfg < _table->mcfg_end(); mcfg = mcfg->next()) {
PINF("MCFG BASE 0x%llx seg %02x bus %02x-%02x", mcfg->base,
mcfg->pci_seg, mcfg->pci_bus_start, mcfg->pci_bus_end);
}
}
Table_wrapper(addr_t base)
: _base(base), _io_mem(0), _table(0)
{
@ -927,10 +956,16 @@ class Acpi_table
}
if (table.is_madt()) {
PDBG("Found MADT");
PDBG("Found MADT");
table.parse_madt();
}
if (table.is_mcfg()) {
PDBG("Found MCFG");
table.parse_mcfg();
}
}
if (dsdt) {