arch/x86/include/asm/itss.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Interrupt Timer Subsystem
 *
 * Copyright (C) 2017 Intel Corporation.
 * Copyright 2019 Google LLC
 *
 * Modified from coreboot itss.h
 */

#ifndef _ASM_ARCH_ITSS_H
#define _ASM_ARCH_ITSS_H

#include <irq.h>

#define GPIO_IRQ_START	50
#define GPIO_IRQ_END	ITSS_MAX_IRQ

#define ITSS_MAX_IRQ	119
#define IRQS_PER_IPC	32
#define NUM_IPC_REGS	DIV_ROUND_UP(ITSS_MAX_IRQ, IRQS_PER_IPC)

/* Max PXRC registers in ITSS */
#define MAX_PXRC_CONFIG	(PCR_ITSS_PIRQH_ROUT - PCR_ITSS_PIRQA_ROUT + 1)

/* PIRQA Routing Control Register */
#define PCR_ITSS_PIRQA_ROUT	0x3100
/* PIRQB Routing Control Register */
#define PCR_ITSS_PIRQB_ROUT	0x3101
/* PIRQC Routing Control Register */
#define PCR_ITSS_PIRQC_ROUT	0x3102
/* PIRQD Routing Control Register */
#define PCR_ITSS_PIRQD_ROUT	0x3103
/* PIRQE Routing Control Register */
#define PCR_ITSS_PIRQE_ROUT	0x3104
/* PIRQF Routing Control Register */
#define PCR_ITSS_PIRQF_ROUT	0x3105
/* PIRQG Routing Control Register */
#define PCR_ITSS_PIRQG_ROUT	0x3106
/* PIRQH Routing Control Register */
#define PCR_ITSS_PIRQH_ROUT	0x3107
/* ITSS Interrupt polarity control */
#define PCR_ITSS_IPC0_CONF	0x3200
/* ITSS Power reduction control */
#define PCR_ITSS_ITSSPRC	0x3300

struct itss_plat {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
	/* Put this first since driver model will copy the data here */
	struct dtd_intel_itss dtplat;
#endif
};

/* struct pmc_route - Routing for PMC to GPIO */
struct pmc_route {
	u32 pmc;
	u32 gpio;
};

struct itss_priv {
	struct pmc_route *route;
	uint route_count;
	u32 irq_snapshot[NUM_IPC_REGS];
};

#endif /* _ASM_ARCH_ITSS_H */