cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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intc-shx3.c (640B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Shared support for SH-X3 interrupt controllers.
      4 *
      5 *  Copyright (C) 2009 - 2010  Paul Mundt
      6 */
      7#include <linux/irq.h>
      8#include <linux/io.h>
      9#include <linux/init.h>
     10
     11#define INTACK		0xfe4100b8
     12#define INTACKCLR	0xfe4100bc
     13#define INTC_USERIMASK	0xfe411000
     14
     15#ifdef CONFIG_INTC_BALANCING
     16unsigned int irq_lookup(unsigned int irq)
     17{
     18	return __raw_readl(INTACK) & 1 ? irq : NO_IRQ_IGNORE;
     19}
     20
     21void irq_finish(unsigned int irq)
     22{
     23	__raw_writel(irq2evt(irq), INTACKCLR);
     24}
     25#endif
     26
     27static int __init shx3_irq_setup(void)
     28{
     29	return register_intc_userimask(INTC_USERIMASK);
     30}
     31arch_initcall(shx3_irq_setup);