diff options
Diffstat (limited to 'arch/x86/cpu/irq.c')
| -rw-r--r-- | arch/x86/cpu/irq.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c index 2950783055..df3cd0abc7 100644 --- a/arch/x86/cpu/irq.c +++ b/arch/x86/cpu/irq.c @@ -13,6 +13,7 @@ #include <asm/irq.h> #include <asm/pci.h> #include <asm/pirq_routing.h> +#include <asm/tables.h> DECLARE_GLOBAL_DATA_PTR; @@ -121,6 +122,11 @@ static int create_pirq_routing_table(struct udevice *dev) priv->irq_mask = fdtdec_get_int(blob, node, "intel,pirq-mask", PIRQ_BITMAP); + if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) { + /* Reserve IRQ9 for SCI */ + priv->irq_mask &= ~(1 << 9); + } + if (priv->config == PIRQ_VIA_IBASE) { int ibase_off; @@ -142,6 +148,9 @@ static int create_pirq_routing_table(struct udevice *dev) priv->ibase &= ~0xf; } + priv->actl_8bit = fdtdec_get_bool(blob, node, "intel,actl-8bit"); + priv->actl_addr = fdtdec_get_int(blob, node, "intel,actl-addr", 0); + cell = fdt_getprop(blob, node, "intel,pirq-routing", &len); if (!cell || len % sizeof(struct pirq_routing)) return -EINVAL; @@ -206,11 +215,30 @@ static int create_pirq_routing_table(struct udevice *dev) rt->size = irq_entries * sizeof(struct irq_info) + 32; + /* Fix up the table checksum */ + rt->checksum = table_compute_checksum(rt, rt->size); + pirq_routing_table = rt; return 0; } +static void irq_enable_sci(struct udevice *dev) +{ + struct irq_router *priv = dev_get_priv(dev); + + if (priv->actl_8bit) { + /* Bit7 must be turned on to enable ACPI */ + dm_pci_write_config8(dev->parent, priv->actl_addr, 0x80); + } else { + /* Write 0 to enable SCI on IRQ9 */ + if (priv->config == PIRQ_VIA_PCI) + dm_pci_write_config32(dev->parent, priv->actl_addr, 0); + else + writel(0, priv->ibase + priv->actl_addr); + } +} + int irq_router_common_init(struct udevice *dev) { int ret; @@ -224,6 +252,9 @@ int irq_router_common_init(struct udevice *dev) pirq_route_irqs(dev, pirq_routing_table->slots, get_irq_slot_count(pirq_routing_table)); + if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) + irq_enable_sci(dev); + return 0; } |