/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2013 Google Inc.
 * Copyright (C) 2015-2016 Intel Corp.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _SOC_IRQ_H_
#define _SOC_IRQ_H_

#define PIRQA_APIC_IRQ 16
#define PIRQB_APIC_IRQ 17
#define PIRQC_APIC_IRQ 18
#define PIRQD_APIC_IRQ 19
#define PIRQE_APIC_IRQ 20
#define PIRQF_APIC_IRQ 21
#define PIRQG_APIC_IRQ 22
#define PIRQH_APIC_IRQ 23

/* PIC IRQ settings. */
#define PIRQ_PIC_IRQ3           0x3
#define PIRQ_PIC_IRQ4           0x4
#define PIRQ_PIC_IRQ5           0x5
#define PIRQ_PIC_IRQ6           0x6
#define PIRQ_PIC_IRQ7           0x7
#define PIRQ_PIC_IRQ9           0x9
#define PIRQ_PIC_IRQ10          0xa
#define PIRQ_PIC_IRQ11          0xb
#define PIRQ_PIC_IRQ12          0xc
#define PIRQ_PIC_IRQ14          0xe
#define PIRQ_PIC_IRQ15          0xf
#define PIRQ_PIC_IRQDISABLE     0x80
#define PIRQ_PIC_UNKNOWN_UNUSED 0xff

/* Overloaded term, but these values determine the per device route. */
#define PIRQA 0
#define PIRQB 1
#define PIRQC 2
#define PIRQD 3
#define PIRQE 4
#define PIRQF 5
#define PIRQG 6
#define PIRQH 7

#define ACPI_CNTL_OFFSET	0x44
#define SCIS_MASK		0x07
#define SCIS_IRQ9		0x00
#define SCIS_IRQ10		0x01
#define SCIS_IRQ11		0x02
#define SCIS_IRQ20		0x04
#define SCIS_IRQ21		0x05
#define SCIS_IRQ22		0x06
#define SCIS_IRQ23		0x07

/* In each mainboard directory there should exist a header file irqroute.h that
 * defines the PCI_DEV_PIRQ_ROUTES and PIRQ_PIC_ROUTES macros which
 * consist of PCI_DEV_PIRQ_ROUTE and PIRQ_PIC entries. */

#if !defined(__ASSEMBLER__) && !defined(__ACPI__)
#include <stdint.h>

#define NUM_OF_PCI_DEVS 32
#define NUM_PIRQS   8

struct broadwell_de_irq_route {
	/* Per device configuration. */
	uint16_t pcidev[NUM_OF_PCI_DEVS];
	/* Route path for each internal PIRQx in PIC mode. */
	uint8_t  pic[NUM_PIRQS];
};

extern const struct broadwell_de_irq_route global_broadwell_de_irq_route;

#define DEFINE_IRQ_ROUTES \
	const struct broadwell_de_irq_route global_broadwell_de_irq_route = { \
		.pcidev = { PCI_DEV_PIRQ_ROUTES, }, \
		.pic = { PIRQ_PIC_ROUTES, }, \
	}

#define PCI_DEV_PIRQ_ROUTE(dev_, a_, b_, c_, d_) \
	[dev_] = ((PIRQ ## d_) << 12) | ((PIRQ ## c_) << 8) | \
	         ((PIRQ ## b_) <<  4) | ((PIRQ ## a_) << 0)

#define PIRQ_PIC(pirq_, pic_irq_) \
	[PIRQ ## pirq_] = PIRQ_PIC_IRQ ## pic_irq_

#endif /* !defined(__ASSEMBLER__) && !defined(__ACPI__) */

#endif /* _SOC_IRQ_H_ */