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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, 1997 by Ralf Baechle
*
* $Id: setup.c,v 1.6 1997/12/20 13:09:29 ralf Exp $
*/
#include <asm/ptrace.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <linux/pci.h>
#include <asm/bcache.h>
#include <asm/bootinfo.h>
#include <asm/keyboard.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/processor.h>
#include <asm/reboot.h>
#include <asm/sni.h>
#include <asm/vector.h>
#include <asm/pci.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_rm200_keyboard_setup(void);
extern void sni_machine_restart(char *command);
extern void sni_machine_halt(void);
extern void sni_machine_power_off(void);
__initfunc(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_IRQ1 | IE_IRQ4);
}
void (*board_time_init)(struct irqaction *irq);
__initfunc(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;
extern struct pci_ops sni_pci_ops;
extern unsigned char sni_map_isa_cache;
/*
* A bit more gossip about the iron we're running on ...
*/
static inline void sni_pcimt_detect(void)
{
char boardtype[80];
unsigned char csmsr;
char *p = boardtype;
unsigned int asic, cacheconf;
csmsr = *(volatile unsigned char *)PCIMT_CSMSR;
p += sprintf(p, "%s PCI", (csmsr & 0x80) ? "RM200" : "RM300");
if ((csmsr & 0x80) == 0)
p += sprintf(p, ", board revision %s",
(csmsr & 0x20) ? "D" : "C");
asic = csmsr & 0x80;
asic = (csmsr & 0x08) ? asic : !asic;
p += sprintf(p, ", ASIC PCI Rev %s", asic ? "1.0" : "1.1");
printk("%s.\n", boardtype);
}
__initfunc(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;
}
}
sni_pcimt_detect();
sni_pcimt_sc_init();
irq_setup = sni_irq_setup;
fd_cacheflush = sni_fd_cacheflush; // Will go away
feature = &sni_rm200_pci_feature;
mips_io_port_base = SNI_PORT_BASE;
keyboard_setup = sni_rm200_keyboard_setup;
/*
* Setup (E)ISA I/O memory access stuff
*/
isa_slot_offset = 0xb0000000;
// sni_map_isa_cache = 0;
EISA_bus = 1;
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
/* XXX FIXME: CONFIG_RTC */
request_region(0x70,0x10,"rtc");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
board_time_init = sni_rm200_pci_time_init;
_machine_restart = sni_machine_restart;
_machine_halt = sni_machine_halt;
_machine_power_off = sni_machine_power_off;
aux_device_present = 0xaa;
/*
* Some cluefull person has placed the PCI config data directly in
* the I/O port space ...
*/
request_region(0xcfc,0x04,"PCI config data");
pci_ops = &sni_pci_ops;
}
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