102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
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/* $Id: setup.c,v 1.5 2003/08/04 01:51:58 lethal Exp $
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*
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* arch/sh/kernel/setup_cqreek.c
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*
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* Copyright (C) 2000 Niibe Yutaka
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*
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* CqREEK IDE/ISA Bridge Support.
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*
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <asm/mach/cqreek.h>
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#include <asm/machvec.h>
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#include <asm/io.h>
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#include <asm/io_generic.h>
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#include <asm/irq.h>
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#include <asm/rtc.h>
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#define IDE_OFFSET 0xA4000000UL
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#define ISA_OFFSET 0xA4A00000UL
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const char *get_system_type(void)
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{
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return "CqREEK";
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}
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static unsigned long cqreek_port2addr(unsigned long port)
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{
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if (0x0000<=port && port<=0x0040)
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return IDE_OFFSET + port;
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if ((0x01f0<=port && port<=0x01f7) || port == 0x03f6)
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return IDE_OFFSET + port;
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return ISA_OFFSET + port;
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}
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/*
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* The Machine Vector
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*/
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struct sh_machine_vector mv_cqreek __initmv = {
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#if defined(CONFIG_CPU_SH4)
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.mv_nr_irqs = 48,
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#elif defined(CONFIG_CPU_SUBTYPE_SH7708)
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.mv_nr_irqs = 32,
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#elif defined(CONFIG_CPU_SUBTYPE_SH7709)
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.mv_nr_irqs = 61,
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#endif
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.mv_init_irq = init_cqreek_IRQ,
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.mv_isa_port2addr = cqreek_port2addr,
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};
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ALIAS_MV(cqreek)
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/*
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* Initialize the board
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*/
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void __init platform_setup(void)
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{
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int i;
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/* udelay is not available at setup time yet... */
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#define DELAY() do {for (i=0; i<10000; i++) ctrl_inw(0xa0000000);} while(0)
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if ((inw (BRIDGE_FEATURE) & 1)) { /* We have IDE interface */
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outw_p(0, BRIDGE_IDE_INTR_LVL);
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outw_p(0, BRIDGE_IDE_INTR_MASK);
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outw_p(0, BRIDGE_IDE_CTRL);
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DELAY();
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outw_p(0x8000, BRIDGE_IDE_CTRL);
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DELAY();
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outw_p(0xffff, BRIDGE_IDE_INTR_STAT); /* Clear interrupt status */
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outw_p(0x0f-14, BRIDGE_IDE_INTR_LVL); /* Use 14 IPR */
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outw_p(1, BRIDGE_IDE_INTR_MASK); /* Enable interrupt */
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cqreek_has_ide=1;
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}
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if ((inw (BRIDGE_FEATURE) & 2)) { /* We have ISA interface */
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outw_p(0, BRIDGE_ISA_INTR_LVL);
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outw_p(0, BRIDGE_ISA_INTR_MASK);
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outw_p(0, BRIDGE_ISA_CTRL);
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DELAY();
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outw_p(0x8000, BRIDGE_ISA_CTRL);
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DELAY();
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outw_p(0xffff, BRIDGE_ISA_INTR_STAT); /* Clear interrupt status */
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outw_p(0x0f-10, BRIDGE_ISA_INTR_LVL); /* Use 10 IPR */
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outw_p(0xfff8, BRIDGE_ISA_INTR_MASK); /* Enable interrupt */
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cqreek_has_isa=1;
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}
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printk(KERN_INFO "CqREEK Setup (IDE=%d, ISA=%d)...done\n", cqreek_has_ide, cqreek_has_isa);
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}
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