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Diffstat (limited to 'src/arch/x86')
-rw-r--r--src/arch/x86/Kconfig16
-rw-r--r--src/arch/x86/pirq_routing.c12
2 files changed, 21 insertions, 7 deletions
diff --git a/src/arch/x86/Kconfig b/src/arch/x86/Kconfig
index 06aadedae6..631d981e45 100644
--- a/src/arch/x86/Kconfig
+++ b/src/arch/x86/Kconfig
@@ -329,3 +329,19 @@ config HAVE_CF9_RESET
config HAVE_CF9_RESET_PREPARE
bool
depends on HAVE_CF9_RESET
+
+config PIRQ_ROUTE
+ bool
+ default n
+
+config MAX_PIRQ_LINKS
+ int
+ default 4
+ depends on PIRQ_ROUTE
+ help
+ This variable specifies the number of PIRQ interrupt links which are
+ routable. On most chipsets, this is 4, INTA through INTD. Some
+ chipsets offer more than four links, commonly up to INTH. They may
+ also have a separate link for ATA or IOAPIC interrupts. When the PIRQ
+ table specifies links greater than 4, pirq_route_irqs will not
+ function properly, unless this variable is correctly set.
diff --git a/src/arch/x86/pirq_routing.c b/src/arch/x86/pirq_routing.c
index 15d7411b3f..5f80c9d56c 100644
--- a/src/arch/x86/pirq_routing.c
+++ b/src/arch/x86/pirq_routing.c
@@ -20,10 +20,6 @@
#include <string.h>
#include <device/pci.h>
-void __weak pirq_assign_irqs(const unsigned char pirq[CONFIG_MAX_PIRQ_LINKS])
-{
-}
-
static void check_pirq_routing_table(struct irq_routing_table *rt)
{
uint8_t *addr = (uint8_t *)rt;
@@ -146,8 +142,11 @@ static void pirq_route_irqs(unsigned long addr)
/* Set PCI IRQs. */
for (i = 0; i < num_entries; i++) {
+ u8 bus = pirq_tbl->slots[i].bus;
+ u8 devfn = pirq_tbl->slots[i].devfn;
+
printk(BIOS_DEBUG, "PIRQ Entry %d Dev/Fn: %X Slot: %d\n", i,
- pirq_tbl->slots[i].devfn >> 3, pirq_tbl->slots[i].slot);
+ devfn >> 3, pirq_tbl->slots[i].slot);
for (intx = 0; intx < MAX_INTX_ENTRIES; intx++) {
@@ -178,8 +177,7 @@ static void pirq_route_irqs(unsigned long addr)
}
/* Bus, device, slots IRQs for {A,B,C,D}. */
- pci_assign_irqs(pirq_tbl->slots[i].bus,
- pirq_tbl->slots[i].devfn >> 3, irq_slot);
+ pci_assign_irqs(bus, devfn >> 3, irq_slot);
}
for (i = 0; i < CONFIG_MAX_PIRQ_LINKS; i++)