diff options
Diffstat (limited to 'arch/mips/dec/setup.c')
| -rw-r--r-- | arch/mips/dec/setup.c | 784 |
1 files changed, 784 insertions, 0 deletions
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c new file mode 100644 index 000000000..6c3704f51 --- /dev/null +++ b/arch/mips/dec/setup.c @@ -0,0 +1,784 @@ +/* + * 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); + } + 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; +} |