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kernel/linux-rt-4.4.41/arch/mn10300/unit-asb2305/unit-init.c 1.52 KB
5113f6f70   김현기   kernel add
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  /* ASB2305 Initialisation
   *
   * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public Licence
   * as published by the Free Software Foundation; either version
   * 2 of the Licence, or (at your option) any later version.
   */
  #include <linux/kernel.h>
  #include <linux/param.h>
  #include <linux/init.h>
  #include <linux/pci.h>
  #include <asm/io.h>
  #include <asm/irq.h>
  #include <asm/setup.h>
  #include <asm/processor.h>
  #include <asm/intctl-regs.h>
  #include <asm/serial-regs.h>
  #include <unit/serial.h>
  
  /*
   * initialise some of the unit hardware before gdbstub is set up
   */
  asmlinkage void __init unit_init(void)
  {
  #ifndef CONFIG_GDBSTUB_ON_TTYSx
  	/* set the 16550 interrupt line to level 3 if not being used for GDB */
  #ifdef CONFIG_EXT_SERIAL_IRQ_LEVEL
  	set_intr_level(XIRQ0, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
  #endif
  #endif /* CONFIG_GDBSTUB_ON_TTYSx */
  }
  
  /*
   * initialise the rest of the unit hardware after gdbstub is ready
   */
  void __init unit_setup(void)
  {
  #ifdef CONFIG_PCI
  	unit_pci_init();
  #endif
  }
  
  /*
   * initialise the external interrupts used by a unit of this type
   */
  void __init unit_init_IRQ(void)
  {
  	unsigned int extnum;
  
  	for (extnum = 0; extnum < NR_XIRQS; extnum++) {
  		switch (GET_XIRQ_TRIGGER(extnum)) {
  		case XIRQ_TRIGGER_HILEVEL:
  		case XIRQ_TRIGGER_LOWLEVEL:
  			mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
  			break;
  		default:
  			break;
  		}
  	}
  }