96 lines
2.0 KiB
C
96 lines
2.0 KiB
C
|
/*
|
||
|
|
* TURBOchannel architecture calls.
|
||
|
|
*
|
||
|
|
* Copyright (c) Harald Koerfgen, 1998
|
||
|
|
* Copyright (c) 2001, 2003, 2005, 2006 Maciej W. Rozycki
|
||
|
|
* Copyright (c) 2005 James Simmons
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/tc.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
#include <asm/addrspace.h>
|
||
|
|
#include <asm/bootinfo.h>
|
||
|
|
#include <asm/paccess.h>
|
||
|
|
|
||
|
|
#include <asm/dec/interrupts.h>
|
||
|
|
#include <asm/dec/prom.h>
|
||
|
|
#include <asm/dec/system.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Protected read byte from TURBOchannel slot space.
|
||
|
|
*/
|
||
|
|
int tc_preadb(u8 *valp, void __iomem *addr)
|
||
|
|
{
|
||
|
|
return get_dbe(*valp, (u8 *)addr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get TURBOchannel bus information as specified by the spec, plus
|
||
|
|
* the slot space base address and the number of slots.
|
||
|
|
*/
|
||
|
|
int __init tc_bus_get_info(struct tc_bus *tbus)
|
||
|
|
{
|
||
|
|
if (!dec_tc_bus)
|
||
|
|
return -ENXIO;
|
||
|
|
|
||
|
|
memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info));
|
||
|
|
tbus->slot_base = CPHYSADDR((long)rex_slot_address(0));
|
||
|
|
|
||
|
|
switch (mips_machtype) {
|
||
|
|
case MACH_DS5000_200:
|
||
|
|
tbus->num_tcslots = 7;
|
||
|
|
break;
|
||
|
|
case MACH_DS5000_2X0:
|
||
|
|
case MACH_DS5900:
|
||
|
|
tbus->ext_slot_base = 0x20000000;
|
||
|
|
tbus->ext_slot_size = 0x20000000;
|
||
|
|
/* fall through */
|
||
|
|
case MACH_DS5000_1XX:
|
||
|
|
tbus->num_tcslots = 3;
|
||
|
|
break;
|
||
|
|
case MACH_DS5000_XX:
|
||
|
|
tbus->num_tcslots = 2;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the IRQ for the specified slot.
|
||
|
|
*/
|
||
|
|
void __init tc_device_get_irq(struct tc_dev *tdev)
|
||
|
|
{
|
||
|
|
switch (tdev->slot) {
|
||
|
|
case 0:
|
||
|
|
tdev->interrupt = dec_interrupt[DEC_IRQ_TC0];
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
tdev->interrupt = dec_interrupt[DEC_IRQ_TC1];
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
tdev->interrupt = dec_interrupt[DEC_IRQ_TC2];
|
||
|
|
break;
|
||
|
|
/*
|
||
|
|
* Yuck! DS5000/200 onboard devices
|
||
|
|
*/
|
||
|
|
case 5:
|
||
|
|
tdev->interrupt = dec_interrupt[DEC_IRQ_TC5];
|
||
|
|
break;
|
||
|
|
case 6:
|
||
|
|
tdev->interrupt = dec_interrupt[DEC_IRQ_TC6];
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
tdev->interrupt = -1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|