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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
*/
#include <linux/config.h>
#include <linux/init.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/ptrace.h>
#include <asm/mipsregs.h>
#include <asm/reboot.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 deskstation_handle_int(void);
extern asmlinkage void deskstation_fd_cacheflush(const void *addr, size_t size);
extern struct feature deskstation_tyne_feature;
extern struct feature deskstation_rpc44_feature;
extern void deskstation_machine_reboot(void);
extern void deskstation_machine_halt(void);
extern void deskstation_machine_power_off(void);
#ifdef CONFIG_DESKSTATION_TYNE
unsigned long mips_dma_cache_size = 0;
unsigned long mips_dma_cache_base = KSEG0;
__initfunc(static void tyne_irq_setup(void))
{
set_except_vector(0, deskstation_handle_int);
/* 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 */
request_region(0x20,0x20, "pic1");
request_region(0xa0,0x20, "pic2");
setup_x86_irq(2, &irq2);
}
#endif
#ifdef CONFIG_DESKSTATION_RPC44
__initfunc(static void rpc44_irq_setup(void))
{
/*
* For the moment just steal the TYNE support. In the
* future, we need to consider merging the two -- imp
*/
set_except_vector(0, deskstation_handle_int);
/* 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 */
request_region(0x20,0x20, "pic1");
request_region(0xa0,0x20, "pic2");
setup_x86_irq(2, &irq2);
set_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
}
#endif
__initfunc(void deskstation_setup(void))
{
switch(mips_machtype) {
#ifdef CONFIG_DESKSTATION_TYNE
case MACH_DESKSTATION_TYNE:
atag = bi_TagFind(tag_dma_cache_size);
memcpy(&mips_dma_cache_size, TAGVALPTR(atag), atag->size);
atag = bi_TagFind(tag_dma_cache_base);
memcpy(&mips_dma_cache_base, TAGVALPTR(atag), atag->size);
irq_setup = tyne_irq_setup;
feature = &deskstation_tyne_feature;
isa_slot_offset = 0xe3000000; // Will go away
break;
#endif
#ifdef CONFIG_DESKSTATION_RPC44
case MACH_DESKSTATION_RPC44:
irq_setup = rpc44_irq_setup;
mips_memory_upper = KSEG0 + (32 << 20); /* xxx fixme imp */
feature = &deskstation_rpc44_feature; // Will go away
isa_slot_offset = 0xa0000000;
break;
#endif
}
fd_cacheflush = deskstation_fd_cacheflush;
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x70,0x10,"rtc");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
}
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