diff options
Diffstat (limited to 'arch/x86_64/kernel/io_apic.c')
| -rw-r--r-- | arch/x86_64/kernel/io_apic.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index e8cf44ef877..2585c1d92b2 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -30,6 +30,9 @@ #include <linux/mc146818rtc.h> #include <linux/acpi.h> #include <linux/sysdev.h> +#ifdef CONFIG_ACPI +#include <acpi/acpi_bus.h> +#endif #include <asm/io.h> #include <asm/smp.h> @@ -260,6 +263,8 @@ __setup("apic", enable_ioapic_setup); And another hack to disable the IOMMU on VIA chipsets. + ... and others. Really should move this somewhere else. + Kludge-O-Rama. */ void __init check_ioapic(void) { @@ -304,6 +309,25 @@ void __init check_ioapic(void) #endif /* RED-PEN skip them on mptables too? */ return; + case PCI_VENDOR_ID_ATI: + if (apic_runs_main_timer != 0) + break; +#ifdef CONFIG_ACPI + /* Don't do this for laptops right + right now because their timer + doesn't necessarily tick in C2/3 */ + if (acpi_fadt.revision >= 3 && + (acpi_fadt.plvl2_lat + acpi_fadt.plvl3_lat) < 1100) { + printk(KERN_INFO +"ATI board detected, but seems to be a laptop. Timer might be shakey, sorry\n"); + break; + } +#endif + printk(KERN_INFO + "ATI board detected. Using APIC/PM timer.\n"); + apic_runs_main_timer = 1; + nohpet = 1; + return; } /* No multi-function device? */ @@ -2027,7 +2051,7 @@ int __init io_apic_get_redir_entries (int ioapic) } -int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int active_high_low) +int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int polarity) { struct IO_APIC_route_entry entry; unsigned long flags; @@ -2049,8 +2073,8 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int a entry.delivery_mode = INT_DELIVERY_MODE; entry.dest_mode = INT_DEST_MODE; entry.dest.logical.logical_dest = cpu_mask_to_apicid(TARGET_CPUS); - entry.trigger = edge_level; - entry.polarity = active_high_low; + entry.trigger = triggering; + entry.polarity = polarity; entry.mask = 1; /* Disabled (masked) */ irq = gsi_irq_sharing(irq); @@ -2065,9 +2089,9 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int a apic_printk(APIC_VERBOSE,KERN_DEBUG "IOAPIC[%d]: Set PCI routing entry (%d-%d -> 0x%x -> " "IRQ %d Mode:%i Active:%i)\n", ioapic, mp_ioapics[ioapic].mpc_apicid, pin, entry.vector, irq, - edge_level, active_high_low); + triggering, polarity); - ioapic_register_intr(irq, entry.vector, edge_level); + ioapic_register_intr(irq, entry.vector, triggering); if (!ioapic && (irq < 16)) disable_8259A_irq(irq); |