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/*
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
* Copyright (C) 2015 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pci.h>
#include <asm/arch/device.h>
#include <asm/arch/tnc.h>
int queensbay_irq_router_probe(struct udevice *dev)
{
struct tnc_rcba *rcba;
u32 base;
base = x86_pci_read_config32(TNC_LPC, LPC_RCBA);
base &= ~MEM_BAR_EN;
rcba = (struct tnc_rcba *)base;
/* Make sure all internal PCI devices are using INTA */
writel(INTA, &rcba->d02ip);
writel(INTA, &rcba->d03ip);
writel(INTA, &rcba->d27ip);
writel(INTA, &rcba->d31ip);
writel(INTA, &rcba->d23ip);
writel(INTA, &rcba->d24ip);
writel(INTA, &rcba->d25ip);
writel(INTA, &rcba->d26ip);
/*
* Route TunnelCreek PCI device interrupt pin to PIRQ
*
* Since PCIe downstream ports received INTx are routed to PIRQ
* A/B/C/D directly and not configurable, we have to route PCIe
* root ports' INTx to PIRQ A/B/C/D as well. For other devices
* on TunneCreek, route them to PIRQ E/F/G/H.
*/
writew(PIRQE, &rcba->d02ir);
writew(PIRQF, &rcba->d03ir);
writew(PIRQG, &rcba->d27ir);
writew(PIRQH, &rcba->d31ir);
writew(PIRQA, &rcba->d23ir);
writew(PIRQB, &rcba->d24ir);
writew(PIRQC, &rcba->d25ir);
writew(PIRQD, &rcba->d26ir);
return irq_router_common_init(dev);
}
static const struct udevice_id queensbay_irq_router_ids[] = {
{ .compatible = "intel,queensbay-irq-router" },
{ }
};
U_BOOT_DRIVER(queensbay_irq_router_drv) = {
.name = "queensbay_intel_irq",
.id = UCLASS_IRQ,
.of_match = queensbay_irq_router_ids,
.probe = queensbay_irq_router_probe,
};
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