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/*
* Setup pointers to hardware dependand routines.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1996 by Ralf Baechle
*/
#include <asm/ptrace.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/processor.h>
#include <asm/vector.h>
/*
* Initial irq handlers.
*/
static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
/*
* IRQ2 is cascade interrupt to second interrupt controller
*/
static struct irqaction irq2 = { no_action, 0, 0, "cascade", NULL, NULL};
extern asmlinkage void sni_rm200_pci_handle_int(void);
extern asmlinkage void sni_fd_cacheflush(const void *addr, size_t size);
extern struct feature sni_rm200_pci_feature;
extern void sni_hard_reset_now(void);
static void
sni_irq_setup(void)
{
set_except_vector(0, sni_rm200_pci_handle_int);
request_region(0x20,0x20, "pic1");
request_region(0xa0,0x20, "pic2");
setup_x86_irq(2, &irq2);
/*
* IRQ0 seems to be the irq for PC style stuff.
* I don't know how to handle the debug button interrupt, so
* don't use this button yet or bad things happen ...
*/
set_cp0_status(ST0_IM, IE_IRQ0);
}
void (*board_time_init)(struct irqaction *irq);
static void sni_rm200_pci_time_init(struct irqaction *irq)
{
/* set the clock to 100 Hz */
outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */
outb_p(LATCH & 0xff , 0x40); /* LSB */
outb(LATCH >> 8 , 0x40); /* MSB */
setup_x86_irq(0, irq);
}
unsigned char aux_device_present;
void
sni_rm200_pci_setup(void)
{
tag *atag;
/*
* We just check if a tag_screen_info can be gathered
* in setup_arch(), if yes we don't proceed futher...
*/
atag = bi_TagFind(tag_screen_info);
if (!atag) {
/*
* If no, we try to find the tag_arc_displayinfo which is
* always created by Milo for an ARC box (for now Milo only
* works on ARC boxes :) -Stoned.
*/
atag = bi_TagFind(tag_arcdisplayinfo);
if (atag) {
screen_info.orig_x =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_x;
screen_info.orig_y =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_y;
screen_info.orig_video_cols =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->columns;
screen_info.orig_video_lines =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->lines;
}
}
irq_setup = sni_irq_setup;
fd_cacheflush = sni_fd_cacheflush; // Will go away
feature = &sni_rm200_pci_feature;
port_base = PORT_BASE_SNI;
isa_slot_offset = 0xb0000000;
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x70,0x10,"rtc");
board_time_init = sni_rm200_pci_time_init;
hard_reset_now = sni_hard_reset_now;
if (mips_machtype == MACH_SNI_RM200_PCI)
EISA_bus = 1;
aux_device_present = 0xaa;
}
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