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- Add a new quirk to indicate that pin 0 of the first I/O APIC is really

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IRQ 0 and not an ExtINT pin.  The MADT enumerators ignore the PC-AT flag
  and ignore overrides that map IRQ 0 to pin 2 when this quirk is present.
- Add a block comment above the quirks to document each quirk so that we
  can use more verbose descriptions quirks.

MFC after:	2 weeks
This commit is contained in:
John Baldwin 2005-02-22 21:52:52 +00:00
parent 2e7e36c961
commit 373dd87688
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=142257
3 changed files with 28 additions and 7 deletions
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10
sys/amd64/acpica/madt.c
View File

@ -367,7 +367,7 @@ madt_setup_io(void)
}
/* First, we run through adding I/O APIC's. */
if (madt->PCATCompat)
if (madt->PCATCompat && !(acpi_quirks & ACPI_Q_MADT_IRQ0))
ioapic_enable_mixed_mode();
madt_walk_table(madt_parse_apics, NULL);
@ -596,8 +596,14 @@ madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr)
enum intr_polarity pol;
char buf[64];
if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->Source == 0 &&
intr->Interrupt == 2) {
if (bootverbose)
printf("MADT: Skipping timer override\n");
return;
}
if (bootverbose)
printf("MADT: intr override: source %u, irq %u\n",
printf("MADT: Interrupt override: source %u, irq %u\n",
intr->Source, intr->Interrupt);
KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero"));
if (madt_find_interrupt(intr->Interrupt, &new_ioapic,

15
sys/dev/acpica/acpivar.h
View File

@ -160,11 +160,20 @@ extern struct mtx acpi_mutex;
#define ACPI_INTR_APIC 1
#define ACPI_INTR_SAPIC 2
/* Quirk flags. */
/*
* Quirk flags.
*
* ACPI_Q_BROKEN: Disables all ACPI support.
* ACPI_Q_TIMER: Disables support for the ACPI timer.
* ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the
* first APIC and that the MADT should force that by ignoring the PC-AT
* compatible flag and ignoring overrides that redirect IRQ 0 to pin 2.
*/
extern int acpi_quirks;
#define ACPI_Q_OK 0
#define ACPI_Q_BROKEN (1 << 0) /* Disable ACPI completely. */
#define ACPI_Q_TIMER (1 << 1) /* Disable ACPI timer. */
#define ACPI_Q_BROKEN (1 << 0)
#define ACPI_Q_TIMER (1 << 1)
#define ACPI_Q_MADT_IRQ0 (1 << 2)
/*
* Note that the low ivar values are reserved to provide

10
sys/i386/acpica/madt.c
View File

@ -367,7 +367,7 @@ madt_setup_io(void)
}
/* First, we run through adding I/O APIC's. */
if (madt->PCATCompat)
if (madt->PCATCompat && !(acpi_quirks & ACPI_Q_MADT_IRQ0))
ioapic_enable_mixed_mode();
madt_walk_table(madt_parse_apics, NULL);
@ -595,8 +595,14 @@ madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr)
enum intr_polarity pol;
char buf[64];
if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->Source == 0 &&
intr->Interrupt == 2) {
if (bootverbose)
printf("MADT: Skipping timer override\n");
return;
}
if (bootverbose)
printf("MADT: intr override: source %u, irq %u\n",
printf("MADT: Interrupt override: source %u, irq %u\n",
intr->Source, intr->Interrupt);
KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero"));
if (madt_find_interrupt(intr->Interrupt, &new_ioapic,