/*
* System-specific setup, especially interrupts.
*
* 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) 1998 Harald Koerfgen
* Copyright (C) 2000, 2001, 2002, 2003, 2005, 2020 Maciej W. Rozycki
*/
#include <linux/console.h>
#include <linux/export.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/irq.h>
#include <linux/irqnr.h>
#include <linux/memblock.h>
#include <linux/param.h>
#include <linux/percpu-defs.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/pm.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
#include <asm/cpu-type.h>
#include <asm/irq.h>
#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
#include <asm/page.h>
#include <asm/reboot.h>
#include <asm/sections.h>
#include <asm/time.h>
#include <asm/traps.h>
#include <asm/wbflush.h>
#include <asm/dec/interrupts.h>
#include <asm/dec/ioasic.h>
#include <asm/dec/ioasic_addrs.h>
#include <asm/dec/ioasic_ints.h>
#include <asm/dec/kn01.h>
#include <asm/dec/kn02.h>
#include <asm/dec/kn02ba.h>
#include <asm/dec/kn02ca.h>
#include <asm/dec/kn03.h>
#include <asm/dec/kn230.h>
#include <asm/dec/system.h>
extern void dec_machine_restart(char *command);
extern void dec_machine_halt(void);
extern void dec_machine_power_off(void);
extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
unsigned long dec_kn_slot_base, dec_kn_slot_size;
EXPORT_SYMBOL(dec_kn_slot_base);
EXPORT_SYMBOL(dec_kn_slot_size);
int dec_tc_bus;
DEFINE_SPINLOCK(ioasic_ssr_lock);
EXPORT_SYMBOL(ioasic_ssr_lock);
volatile u32 *ioasic_base;
EXPORT_SYMBOL(ioasic_base);
/*
* IRQ routing and priority tables. Priorities are set as follows:
*
* KN01 KN230 KN02 KN02-BA KN02-CA KN03
*
* MEMORY CPU CPU CPU ASIC CPU CPU
* RTC CPU CPU CPU ASIC CPU CPU
* DMA - - - ASIC ASIC ASIC
* SERIAL0 CPU CPU CSR ASIC ASIC ASIC
* SERIAL1 - - - ASIC - ASIC
* SCSI CPU CPU CSR ASIC ASIC ASIC
* ETHERNET CPU * CSR ASIC ASIC ASIC
* other - - - ASIC - -
* TC2 - - CSR CPU ASIC ASIC
* TC1 - - CSR CPU ASIC ASIC
* TC0 - - CSR CPU ASIC ASIC
* other - CPU - CPU ASIC ASIC
* other - - - - CPU CPU
*
* * -- shared with SCSI
*/
int dec_interrupt[DEC_NR_INTS] = {
[0 ... DEC_NR_INTS - 1] = -1
};
EXPORT_SYMBOL(dec_interrupt);
int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2] = {
{ { .i = ~0 }, { .p = dec_intr_unimplemented } },
};
int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2] = {
{ { .i = ~0 }, { .p = asic_intr_unimplemented } },
};
int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_CPU_INR_FPU);
int *fpu_kstat_irq;
static irq_handler_t busirq_handler;
static unsigned int busirq_flags = IRQF_NO_THREAD;
/*
* Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
*/
static void __init dec_be_init(void)
{
switch (mips_machtype) {
case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
mips_set_be_handler(dec_kn01_be_handler);
busirq_handler = dec_kn01_be_interrupt;
busirq_flags |= IRQF_SHARED;
dec_kn01_be_init();
break;
case MACH_DS5000_1XX: /* DS5000/1xx 3min */
case MACH_DS5000_XX: /* DS5000/xx Maxine */
mips_set_be_handler(dec_kn02xa_be_handler);
busirq_handler = dec_kn02xa_be_interrupt;
dec_kn02xa_be_init();
break;
case MACH_DS5000_200: /* DS5000/200 3max */
case MACH_DS5000_2X0: /* DS5000/240 3max+ */
case MACH_DS5900: /* DS5900 bigmax */
mips_set_be_handler(dec_ecc_be_handler);
busirq_handler = dec_ecc_be_interrupt;
dec_ecc_be_init();
break;
}
}
void __init plat_mem_setup(void)
{
board_be_init = dec_be_init;
wbflush_setup();
_machine_restart = dec_machine_restart;
_machine_halt = dec_machine_halt;
pm_power_off = dec_machine_power_off;
ioport_resource.start = ~0UL;
ioport_resource.end = 0UL;
/* Stay away from the firmware working memory area for now. */
memblock_reserve(PHYS_OFFSET, __pa_symbol(&_text) - PHYS_OFFSET);
}
/*
* Machine-specific initialisation for KN01, aka DS2100 (aka Pmin)
* or DS3100 (aka Pmax).
*/
static int kn01_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = -1,
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11),
[DEC_IRQ_ASC] = -1,
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = -1,
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC),
[DEC_IRQ_SCC0] = -1,
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII),
[DEC_IRQ_TC0] = -1,
[DEC_IRQ_TC1] = -1,
[DEC_IRQ_TC2] = -1,
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = DEC_CPU_IRQ_NR(KN01_CPU_INR_VIDEO),
[DEC_IRQ_ASC_MERR] = -1,
[DEC_IRQ_ASC_ERR] = -1,
[DEC_IRQ_ASC_DMA] = -1,
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = -1,
[DEC_IRQ_SCC0A_RXERR] = -1,
[DEC_IRQ_SCC0A_RXDMA] = -1,
[DEC_IRQ_SCC0A_TXERR] = -1,
[DEC_IRQ_SCC0A_TXDMA] = -1,
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_DZ11) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_SII) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_LANCE) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE) } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static void __init dec_init_kn01(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn01_interrupt,
sizeof(kn01_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn01_cpu_mask_nr_tbl,
sizeof(kn01_cpu_mask_nr_tbl));
mips_cpu_irq_init();
} /* dec_init_kn01 */
/*
* Machine-specific initialisation for KN230, aka DS5100, aka MIPSmate.
*/
static int kn230_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = -1,
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11),
[DEC_IRQ_ASC] = -1,
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN230_CPU_INR_HALT),
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN230_CPU_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC),
[DEC_IRQ_SCC0] = -1,
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII),
[DEC_IRQ_TC0] = -1,
[DEC_IRQ_TC1] = -1,
[DEC_IRQ_TC2] = -1,
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = -1,
[DEC_IRQ_ASC_ERR] = -1,
[DEC_IRQ_ASC_DMA] = -1,
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = -1,
[DEC_IRQ_SCC0A_RXERR] = -1,
[DEC_IRQ_SCC0A_RXDMA] = -1,
[DEC_IRQ_SCC0A_TXERR] = -1,
[DEC_IRQ_SCC0A_TXDMA] = -1,
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_DZ11) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11) } },
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_SII) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII) } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static void __init dec_init_kn230(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn230_interrupt,
sizeof(kn230_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn230_cpu_mask_nr_tbl,
sizeof(kn230_cpu_mask_nr_tbl));
mips_cpu_irq_init();
} /* dec_init_kn230 */
/*
* Machine-specific initialisation for KN02, aka DS5000/200, aka 3max.
*/
static int kn02_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = KN02_IRQ_NR(KN02_CSR_INR_DZ11),
[DEC_IRQ_ASC] = KN02_IRQ_NR(KN02_CSR_INR_ASC),
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = -1,
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = KN02_IRQ_NR(KN02_CSR_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC),
[DEC_IRQ_SCC0] = -1,
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = KN02_IRQ_NR(KN02_CSR_INR_TC0),
[DEC_IRQ_TC1] = KN02_IRQ_NR(KN02_CSR_INR_TC1),
[DEC_IRQ_TC2] = KN02_IRQ_NR(KN02_CSR_INR_TC2),
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = -1,
[DEC_IRQ_ASC_ERR] = -1,
[DEC_IRQ_ASC_DMA] = -1,
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = -1,
[DEC_IRQ_SCC0A_RXERR] = -1,
[DEC_IRQ_SCC0A_RXDMA] = -1,
[DEC_IRQ_SCC0A_TXERR] = -1,
[DEC_IRQ_SCC0A_TXDMA] = -1,
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn02_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_CASCADE) },
{ .p = kn02_io_int } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_DZ11) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_DZ11) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_ASC) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_ASC) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_LANCE) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_LANCE) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC2) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_TC2) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC1) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_TC1) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC0) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_TC0) } },
{ { .i = KN02_IRQ_ALL },
{ .p = kn02_all_int } },
};
static void __init dec_init_kn02(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn02_interrupt,
sizeof(kn02_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn02_cpu_mask_nr_tbl,
sizeof(kn02_cpu_mask_nr_tbl));
/* KN02 CSR IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn02_asic_mask_nr_tbl,
sizeof(kn02_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_kn02_irqs(KN02_IRQ_BASE);
} /* dec_init_kn02 */
/*
* Machine-specific initialisation for KN02-BA, aka DS5000/1xx
* (xx = 20, 25, 33), aka 3min. Also applies to KN04(-BA), aka
* DS5000/150, aka 4min.
*/
static int kn02ba_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = -1,
[DEC_IRQ_ASC] = IO_IRQ_NR(KN02BA_IO_INR_ASC),
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_HALT),
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = IO_IRQ_NR(KN02BA_IO_INR_LANCE),
[DEC_IRQ_BUS] = IO_IRQ_NR(KN02BA_IO_INR_BUS),
[DEC_IRQ_PSU] = IO_IRQ_NR(KN02BA_IO_INR_PSU),
[DEC_IRQ_RTC] = IO_IRQ_NR(KN02BA_IO_INR_RTC),
[DEC_IRQ_SCC0] = IO_IRQ_NR(KN02BA_IO_INR_SCC0),
[DEC_IRQ_SCC1] = IO_IRQ_NR(KN02BA_IO_INR_SCC1),
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0),
[DEC_IRQ_TC1] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1),
[DEC_IRQ_TC2] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2),
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
[DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
[DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
[DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
[DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
[DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
[DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
[DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
[DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
[DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
};
static int_ptr kn02ba_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_CASCADE) },
{ .p = kn02xa_io_int } },
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC2) },
{ .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC1) },
{ .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC0) },
{ .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0) } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_BUS) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_BUS) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_RTC) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_RTC) } },
{ { .i = IO_IRQ_DMA },
{ .p = asic_dma_int } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC0) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_SCC0) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC1) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_SCC1) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_ASC) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_ASC) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_LANCE) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_LANCE) } },
{ { .i = IO_IRQ_ALL },
{ .p = asic_all_int } },
};
static void __init dec_init_kn02ba(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn02ba_interrupt,
sizeof(kn02ba_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn02ba_cpu_mask_nr_tbl,
sizeof(kn02ba_cpu_mask_nr_tbl));
/* I/O ASIC IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn02ba_asic_mask_nr_tbl,
sizeof(kn02ba_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_ioasic_irqs(IO_IRQ_BASE);
} /* dec_init_kn02ba */
/*
* Machine-specific initialisation for KN02-CA, aka DS5000/xx,
* (xx = 20, 25, 33), aka MAXine. Also applies to KN04(-CA), aka
* DS5000/50, aka 4MAXine.
*/
static int kn02ca_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = IO_IRQ_NR(KN02CA_IO_INR_AB_RECV),
[DEC_IRQ_AB_XMIT] = IO_IRQ_NR(KN02CA_IO_INR_AB_XMIT),
[DEC_IRQ_DZ11] = -1,
[DEC_IRQ_ASC] = IO_IRQ_NR(KN02CA_IO_INR_ASC),
[DEC_IRQ_FLOPPY] = IO_IRQ_NR(KN02CA_IO_INR_FLOPPY),
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_HALT),
[DEC_IRQ_ISDN] = IO_IRQ_NR(KN02CA_IO_INR_ISDN),
[DEC_IRQ_LANCE] = IO_IRQ_NR(KN02CA_IO_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC),
[DEC_IRQ_SCC0] = IO_IRQ_NR(KN02CA_IO_INR_SCC0),
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = IO_IRQ_NR(KN02CA_IO_INR_TC0),
[DEC_IRQ_TC1] = IO_IRQ_NR(KN02CA_IO_INR_TC1),
[DEC_IRQ_TC2] = -1,
[DEC_IRQ_TIMER] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_TIMER),
[DEC_IRQ_VIDEO] = IO_IRQ_NR(KN02CA_IO_INR_VIDEO),
[DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
[DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
[DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
[DEC_IRQ_FLOPPY_ERR] = IO_IRQ_NR(IO_INR_FLOPPY_ERR),
[DEC_IRQ_ISDN_ERR] = IO_IRQ_NR(IO_INR_ISDN_ERR),
[DEC_IRQ_ISDN_RXDMA] = IO_IRQ_NR(IO_INR_ISDN_RXDMA),
[DEC_IRQ_ISDN_TXDMA] = IO_IRQ_NR(IO_INR_ISDN_TXDMA),
[DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
[DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
[DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
[DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
[DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
[DEC_IRQ_AB_RXERR] = IO_IRQ_NR(IO_INR_AB_RXERR),
[DEC_IRQ_AB_RXDMA] = IO_IRQ_NR(IO_INR_AB_RXDMA),
[DEC_IRQ_AB_TXERR] = IO_IRQ_NR(IO_INR_AB_TXERR),
[DEC_IRQ_AB_TXDMA] = IO_IRQ_NR(IO_INR_AB_TXDMA),
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn02ca_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_CASCADE) },
{ .p = kn02xa_io_int } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = IO_IRQ_DMA },
{ .p = asic_dma_int } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_SCC0) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_SCC0) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_ASC) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_ASC) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_LANCE) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_LANCE) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC1) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_TC1) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC0) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_TC0) } },
{ { .i = IO_IRQ_ALL },
{ .p = asic_all_int } },
};
static void __init dec_init_kn02ca(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn02ca_interrupt,
sizeof(kn02ca_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn02ca_cpu_mask_nr_tbl,
sizeof(kn02ca_cpu_mask_nr_tbl));
/* I/O ASIC IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn02ca_asic_mask_nr_tbl,
sizeof(kn02ca_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_ioasic_irqs(IO_IRQ_BASE);
} /* dec_init_kn02ca */
/*
* Machine-specific initialisation for KN03, aka DS5000/240,
* aka 3max+ and DS5900, aka BIGmax. Also applies to KN05, aka
* DS5000/260, aka 4max+ and DS5900/260.
*/
static int kn03_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN03_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = -1,
[DEC_IRQ_ASC] = IO_IRQ_NR(KN03_IO_INR_ASC),
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN03_CPU_INR_HALT),
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = IO_IRQ_NR(KN03_IO_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS),
[DEC_IRQ_PSU] = IO_IRQ_NR(KN03_IO_INR_PSU),
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC),
[DEC_IRQ_SCC0] = IO_IRQ_NR(KN03_IO_INR_SCC0),
[DEC_IRQ_SCC1] = IO_IRQ_NR(KN03_IO_INR_SCC1),
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = IO_IRQ_NR(KN03_IO_INR_TC0),
[DEC_IRQ_TC1] = IO_IRQ_NR(KN03_IO_INR_TC1),
[DEC_IRQ_TC2] = IO_IRQ_NR(KN03_IO_INR_TC2),
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
[DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
[DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
[DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
[DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
[DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
[DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
[DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
[DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
[DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
};
static int_ptr kn03_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_CASCADE) },
{ .p = kn03_io_int } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = IO_IRQ_DMA },
{ .p = asic_dma_int } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_SCC0) },
{ .i = IO_IRQ_NR(KN03_IO_INR_SCC0) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_SCC1) },
{ .i = IO_IRQ_NR(KN03_IO_INR_SCC1) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_ASC) },
{ .i = IO_IRQ_NR(KN03_IO_INR_ASC) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_LANCE) },
{ .i = IO_IRQ_NR(KN03_IO_INR_LANCE) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_TC2) },
{ .i = IO_IRQ_NR(KN03_IO_INR_TC2) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_TC1) },
{ .i = IO_IRQ_NR(KN03_IO_INR_TC1) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_TC0) },
{ .i = IO_IRQ_NR(KN03_IO_INR_TC0) } },
{ { .i = IO_IRQ_ALL },
{ .p = asic_all_int } },
};
static void __init dec_init_kn03(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn03_interrupt,
sizeof(kn03_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn03_cpu_mask_nr_tbl,
sizeof(kn03_cpu_mask_nr_tbl));
/* I/O ASIC IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn03_asic_mask_nr_tbl,
sizeof(kn03_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_ioasic_irqs(IO_IRQ_BASE);
} /* dec_init_kn03 */
void __init arch_init_irq(void)
{
switch (mips_machtype) {
case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
dec_init_kn01();
break;
case MACH_DS5100: /* DS5100 MIPSmate */
dec_init_kn230();
break;
case MACH_DS5000_200: /* DS5000/200 3max */
dec_init_kn02();
break;
case MACH_DS5000_1XX: /* DS5000/1xx 3min */
dec_init_kn02ba();
break;
case MACH_DS5000_2X0: /* DS5000/240 3max+ */
case MACH_DS5900: /* DS5900 bigmax */
dec_init_kn03();
break;
case MACH_DS5000_XX: /* Personal DS5000/xx */
dec_init_kn02ca();
break;
case MACH_DS5800: /* DS5800 Isis */
panic("Don't know how to set this up!");
break;
case MACH_DS5400: /* DS5400 MIPSfair */
panic("Don't know how to set this up!");
break;
case MACH_DS5500: /* DS5500 MIPSfair-2 */
panic("Don't know how to set this up!");
break;
}
/* Free the FPU interrupt if the exception is present. */
if (!cpu_has_nofpuex) {
cpu_fpu_mask = 0;
dec_interrupt[DEC_IRQ_FPU] = -1;
}
/* Free the halt interrupt unused on R4k systems. */
if (current_cpu_type() == CPU_R4000SC ||
current_cpu_type() == CPU_R4400SC)
dec_interrupt[DEC_IRQ_HALT] = -1;
/* Register board interrupts: FPU and cascade. */
if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT) &&
dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
struct irq_desc *desc_fpu;
int irq_fpu;
irq_fpu = dec_interrupt[DEC_IRQ_FPU];
if (request_irq(irq_fpu, no_action, IRQF_NO_THREAD, "fpu",
NULL))
pr_err("Failed to register fpu interrupt\n");
desc_fpu = irq_to_desc(irq_fpu);
fpu_kstat_irq = this_cpu_ptr(&desc_fpu->kstat_irqs->cnt);
}
if (dec_interrupt[DEC_IRQ_CASCADE] >= 0) {
if (request_irq(dec_interrupt[DEC_IRQ_CASCADE], no_action,
IRQF_NO_THREAD, "cascade", NULL))
pr_err("Failed to register cascade interrupt\n");
}
/* Register the bus error interrupt. */
if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq_handler) {
if (request_irq(dec_interrupt[DEC_IRQ_BUS], busirq_handler,
busirq_flags, "bus error", busirq_handler))
pr_err("Failed to register bus error interrupt\n");
}
/* Register the HALT interrupt. */
if (dec_interrupt[DEC_IRQ_HALT] >= 0) {
if (request_irq(dec_interrupt[DEC_IRQ_HALT], dec_intr_halt,
IRQF_NO_THREAD, "halt", NULL))
pr_err("Failed to register halt interrupt\n");
}
}
asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
{
do_IRQ(irq);
return 0;
}
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