Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/mips/dec/Makefile b/arch/mips/dec/Makefile
new file mode 100644
index 0000000..688757a
--- /dev/null
+++ b/arch/mips/dec/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for the DECstation family specific parts of the kernel
+#
+
+obj-y := ecc-berr.o int-handler.o ioasic-irq.o kn02-irq.o reset.o \
+ setup.o time.o
+
+obj-$(CONFIG_PROM_CONSOLE) += promcon.o
+obj-$(CONFIG_CPU_HAS_WB) += wbflush.o
+
+EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/dec/boot/Makefile b/arch/mips/dec/boot/Makefile
new file mode 100644
index 0000000..bcea416
--- /dev/null
+++ b/arch/mips/dec/boot/Makefile
@@ -0,0 +1,12 @@
+#
+# Makefile for the DECstation family specific parts of the kernel
+#
+
+netboot: all
+ $(LD) -N -G 0 -T ld.ecoff ../../boot/zImage \
+ dec_boot.o ramdisk.img -o nbImage
+
+obj-y := decstation.o
+
+clean:
+ rm -f nbImage
diff --git a/arch/mips/dec/boot/decstation.c b/arch/mips/dec/boot/decstation.c
new file mode 100644
index 0000000..56fd427
--- /dev/null
+++ b/arch/mips/dec/boot/decstation.c
@@ -0,0 +1,83 @@
+/*
+ * arch/mips/dec/decstation.c
+ */
+
+#define RELOC
+#define INITRD
+#define DEBUG_BOOT
+
+/*
+ * Magic number indicating REX PROM available on DECSTATION.
+ */
+#define REX_PROM_MAGIC 0x30464354
+
+#define REX_PROM_CLEARCACHE 0x7c/4
+#define REX_PROM_PRINTF 0x30/4
+
+#define VEC_RESET 0xBFC00000 /* Prom base address */
+#define PMAX_PROM_ENTRY(x) (VEC_RESET+((x)*8)) /* Prom jump table */
+#define PMAX_PROM_PRINTF PMAX_PROM_ENTRY(17)
+
+#define PARAM (k_start + 0x2000)
+
+#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
+#define INITRD_START (*(unsigned long *) (PARAM+0x218))
+#define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))
+
+extern int _ftext, _end; /* begin and end of kernel image */
+extern void kernel_entry(int, char **, unsigned long, int *);
+
+void * memcpy(void * dest, const void *src, unsigned int count)
+{
+ unsigned long *tmp = (unsigned long *) dest, *s = (unsigned long *) src;
+
+ count >>= 2;
+ while (count--)
+ *tmp++ = *s++;
+
+ return dest;
+}
+
+void dec_entry(int argc, char **argv,
+ unsigned long magic, int *prom_vec)
+{
+ void (*rex_clear_cache)(void);
+ int (*prom_printf)(char *, ...);
+ unsigned long k_start, len;
+
+ /*
+ * The DS5100 leaves cpu with BEV enabled, clear it.
+ */
+ asm( "lui\t$8,0x3000\n\t"
+ "mtc0\t$8,$12\n\t"
+ ".section\t.sdata\n\t"
+ ".section\t.sbss\n\t"
+ ".section\t.text"
+ : : : "$8");
+
+#ifdef DEBUG_BOOT
+ if (magic == REX_PROM_MAGIC) {
+ prom_printf = (int (*)(char *, ...)) *(prom_vec + REX_PROM_PRINTF);
+ } else {
+ prom_printf = (int (*)(char *, ...)) PMAX_PROM_PRINTF;
+ }
+ prom_printf("Launching kernel...\n");
+#endif
+
+ k_start = (unsigned long) (&kernel_entry) & 0xffff0000;
+
+#ifdef RELOC
+ /*
+ * Now copy kernel image to its destination.
+ */
+ len = ((unsigned long) (&_end) - k_start);
+ memcpy((void *)k_start, &_ftext, len);
+#endif
+
+ if (magic == REX_PROM_MAGIC) {
+ rex_clear_cache = (void (*)(void)) * (prom_vec + REX_PROM_CLEARCACHE);
+ rex_clear_cache();
+ }
+
+ kernel_entry(argc, argv, magic, prom_vec);
+}
diff --git a/arch/mips/dec/boot/ld.ecoff b/arch/mips/dec/boot/ld.ecoff
new file mode 100644
index 0000000..aaa633d
--- /dev/null
+++ b/arch/mips/dec/boot/ld.ecoff
@@ -0,0 +1,43 @@
+OUTPUT_FORMAT("ecoff-littlemips")
+OUTPUT_ARCH(mips)
+ENTRY(dec_entry)
+SECTIONS
+{
+ . = 0x80200000;
+
+ .text :
+ {
+ _ftext = .;
+ *(.text)
+ *(.fixup)
+ }
+ .rdata :
+ {
+ *(.rodata .rodata.* .rdata)
+ }
+ .data :
+ {
+ . = ALIGN(0x1000);
+ ramdisk.img (.data)
+ *(.data)
+ }
+ .sdata :
+ {
+ *(.sdata)
+ }
+ _gp = .;
+ .sbss :
+ {
+ *(.sbss)
+ *(.scommon)
+ }
+ .bss :
+ {
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ }
+ /DISCARD/ : {
+ *(.reginfo .mdebug .note)
+ }
+}
diff --git a/arch/mips/dec/ecc-berr.c b/arch/mips/dec/ecc-berr.c
new file mode 100644
index 0000000..133fb7c
--- /dev/null
+++ b/arch/mips/dec/ecc-berr.c
@@ -0,0 +1,280 @@
+/*
+ * linux/arch/mips/dec/ecc-berr.c
+ *
+ * Bus error event handling code for systems equipped with ECC
+ * handling logic, i.e. DECstation/DECsystem 5000/200 (KN02),
+ * 5000/240 (KN03), 5000/260 (KN05) and DECsystem 5900 (KN03),
+ * 5900/260 (KN05) systems.
+ *
+ * Copyright (c) 2003 Maciej W. Rozycki
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/cpu.h>
+#include <asm/processor.h>
+#include <asm/system.h>
+#include <asm/traps.h>
+
+#include <asm/dec/ecc.h>
+#include <asm/dec/kn02.h>
+#include <asm/dec/kn03.h>
+#include <asm/dec/kn05.h>
+
+static volatile u32 *kn0x_erraddr;
+static volatile u32 *kn0x_chksyn;
+
+static inline void dec_ecc_be_ack(void)
+{
+ *kn0x_erraddr = 0; /* any write clears the IRQ */
+ iob();
+}
+
+static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker)
+{
+ static const char excstr[] = "exception";
+ static const char intstr[] = "interrupt";
+ static const char cpustr[] = "CPU";
+ static const char dmastr[] = "DMA";
+ static const char readstr[] = "read";
+ static const char mreadstr[] = "memory read";
+ static const char writestr[] = "write";
+ static const char mwritstr[] = "partial memory write";
+ static const char timestr[] = "timeout";
+ static const char overstr[] = "overrun";
+ static const char eccstr[] = "ECC error";
+
+ const char *kind, *agent, *cycle, *event;
+ const char *status = "", *xbit = "", *fmt = "";
+ dma_addr_t address;
+ u16 syn = 0, sngl;
+
+ int i = 0;
+
+ u32 erraddr = *kn0x_erraddr;
+ u32 chksyn = *kn0x_chksyn;
+ int action = MIPS_BE_FATAL;
+
+ /* For non-ECC ack ASAP, so any subsequent errors get caught. */
+ if ((erraddr & (KN0X_EAR_VALID | KN0X_EAR_ECCERR)) == KN0X_EAR_VALID)
+ dec_ecc_be_ack();
+
+ kind = invoker ? intstr : excstr;
+
+ if (!(erraddr & KN0X_EAR_VALID)) {
+ /* No idea what happened. */
+ printk(KERN_ALERT "Unidentified bus error %s.\n", kind);
+ return action;
+ }
+
+ agent = (erraddr & KN0X_EAR_CPU) ? cpustr : dmastr;
+
+ if (erraddr & KN0X_EAR_ECCERR) {
+ /* An ECC error on a CPU or DMA transaction. */
+ cycle = (erraddr & KN0X_EAR_WRITE) ? mwritstr : mreadstr;
+ event = eccstr;
+ } else {
+ /* A CPU timeout or a DMA overrun. */
+ cycle = (erraddr & KN0X_EAR_WRITE) ? writestr : readstr;
+ event = (erraddr & KN0X_EAR_CPU) ? timestr : overstr;
+ }
+
+ address = erraddr & KN0X_EAR_ADDRESS;
+ /* For ECC errors on reads adjust for MT pipelining. */
+ if ((erraddr & (KN0X_EAR_WRITE | KN0X_EAR_ECCERR)) == KN0X_EAR_ECCERR)
+ address = (address & ~0xfffLL) | ((address - 5) & 0xfffLL);
+ address <<= 2;
+
+ /* Only CPU errors are fixable. */
+ if (erraddr & KN0X_EAR_CPU && is_fixup)
+ action = MIPS_BE_FIXUP;
+
+ if (erraddr & KN0X_EAR_ECCERR) {
+ static const u8 data_sbit[32] = {
+ 0x4f, 0x4a, 0x52, 0x54, 0x57, 0x58, 0x5b, 0x5d,
+ 0x23, 0x25, 0x26, 0x29, 0x2a, 0x2c, 0x31, 0x34,
+ 0x0e, 0x0b, 0x13, 0x15, 0x16, 0x19, 0x1a, 0x1c,
+ 0x62, 0x64, 0x67, 0x68, 0x6b, 0x6d, 0x70, 0x75,
+ };
+ static const u8 data_mbit[25] = {
+ 0x07, 0x0d, 0x1f,
+ 0x2f, 0x32, 0x37, 0x38, 0x3b, 0x3d, 0x3e,
+ 0x43, 0x45, 0x46, 0x49, 0x4c, 0x51, 0x5e,
+ 0x61, 0x6e, 0x73, 0x76, 0x79, 0x7a, 0x7c, 0x7f,
+ };
+ static const char sbestr[] = "corrected single";
+ static const char dbestr[] = "uncorrectable double";
+ static const char mbestr[] = "uncorrectable multiple";
+
+ if (!(address & 0x4))
+ syn = chksyn; /* Low bank. */
+ else
+ syn = chksyn >> 16; /* High bank. */
+
+ if (!(syn & KN0X_ESR_VLDLO)) {
+ /* Ack now, no rewrite will happen. */
+ dec_ecc_be_ack();
+
+ fmt = KERN_ALERT "%s" "invalid.\n";
+ } else {
+ sngl = syn & KN0X_ESR_SNGLO;
+ syn &= KN0X_ESR_SYNLO;
+
+ /*
+ * Multibit errors may be tagged incorrectly;
+ * check the syndrome explicitly.
+ */
+ for (i = 0; i < 25; i++)
+ if (syn == data_mbit[i])
+ break;
+
+ if (i < 25) {
+ status = mbestr;
+ } else if (!sngl) {
+ status = dbestr;
+ } else {
+ volatile u32 *ptr = (void *)KSEG1ADDR(address);
+
+ *ptr = *ptr; /* Rewrite. */
+ iob();
+
+ status = sbestr;
+ action = MIPS_BE_DISCARD;
+ }
+
+ /* Ack now, now we've rewritten (or not). */
+ dec_ecc_be_ack();
+
+ if (syn && syn == (syn & -syn)) {
+ if (syn == 0x01) {
+ fmt = KERN_ALERT "%s"
+ "%#04x -- %s bit error "
+ "at check bit C%s.\n";
+ xbit = "X";
+ } else {
+ fmt = KERN_ALERT "%s"
+ "%#04x -- %s bit error "
+ "at check bit C%s%u.\n";
+ }
+ i = syn >> 2;
+ } else {
+ for (i = 0; i < 32; i++)
+ if (syn == data_sbit[i])
+ break;
+ if (i < 32)
+ fmt = KERN_ALERT "%s"
+ "%#04x -- %s bit error "
+ "at data bit D%s%u.\n";
+ else
+ fmt = KERN_ALERT "%s"
+ "%#04x -- %s bit error.\n";
+ }
+ }
+ }
+
+ if (action != MIPS_BE_FIXUP)
+ printk(KERN_ALERT "Bus error %s: %s %s %s at %#010lx.\n",
+ kind, agent, cycle, event, address);
+
+ if (action != MIPS_BE_FIXUP && erraddr & KN0X_EAR_ECCERR)
+ printk(fmt, " ECC syndrome ", syn, status, xbit, i);
+
+ return action;
+}
+
+int dec_ecc_be_handler(struct pt_regs *regs, int is_fixup)
+{
+ return dec_ecc_be_backend(regs, is_fixup, 0);
+}
+
+irqreturn_t dec_ecc_be_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ int action = dec_ecc_be_backend(regs, 0, 1);
+
+ if (action == MIPS_BE_DISCARD)
+ return IRQ_NONE;
+
+ /*
+ * FIXME: Find affected processes and kill them, otherwise we
+ * must die.
+ *
+ * The interrupt is asynchronously delivered thus EPC and RA
+ * may be irrelevant, but are printed for a reference.
+ */
+ printk(KERN_ALERT "Fatal bus interrupt, epc == %08lx, ra == %08lx\n",
+ regs->cp0_epc, regs->regs[31]);
+ die("Unrecoverable bus error", regs);
+}
+
+
+/*
+ * Initialization differs a bit between KN02 and KN03/KN05, so we
+ * need two variants. Once set up, all systems can be handled the
+ * same way.
+ */
+static inline void dec_kn02_be_init(void)
+{
+ volatile u32 *csr = (void *)KN02_CSR_BASE;
+ unsigned long flags;
+
+ kn0x_erraddr = (void *)(KN02_SLOT_BASE + KN02_ERRADDR);
+ kn0x_chksyn = (void *)(KN02_SLOT_BASE + KN02_CHKSYN);
+
+ spin_lock_irqsave(&kn02_lock, flags);
+
+ /* Preset write-only bits of the Control Register cache. */
+ cached_kn02_csr = *csr | KN03_CSR_LEDS;
+
+ /* Set normal ECC detection and generation. */
+ cached_kn02_csr &= ~(KN02_CSR_DIAGCHK | KN02_CSR_DIAGGEN);
+ /* Enable ECC correction. */
+ cached_kn02_csr |= KN02_CSR_CORRECT;
+ *csr = cached_kn02_csr;
+ iob();
+
+ spin_unlock_irqrestore(&kn02_lock, flags);
+}
+
+static inline void dec_kn03_be_init(void)
+{
+ volatile u32 *mcr = (void *)(KN03_SLOT_BASE + IOASIC_MCR);
+ volatile u32 *mbcs = (void *)(KN03_SLOT_BASE + KN05_MB_CSR);
+
+ kn0x_erraddr = (void *)(KN03_SLOT_BASE + IOASIC_ERRADDR);
+ kn0x_chksyn = (void *)(KN03_SLOT_BASE + IOASIC_CHKSYN);
+
+ /*
+ * Set normal ECC detection and generation, enable ECC correction.
+ * For KN05 we also need to make sure EE (?) is enabled in the MB.
+ * Otherwise DBE/IBE exceptions would be masked but bus error
+ * interrupts would still arrive, resulting in an inevitable crash
+ * if get_dbe() triggers one.
+ */
+ *mcr = (*mcr & ~(KN03_MCR_DIAGCHK | KN03_MCR_DIAGGEN)) |
+ KN03_MCR_CORRECT;
+ if (current_cpu_data.cputype == CPU_R4400SC)
+ *mbcs |= KN05_MB_CSR_EE;
+ fast_iob();
+}
+
+void __init dec_ecc_be_init(void)
+{
+ if (mips_machtype == MACH_DS5000_200)
+ dec_kn02_be_init();
+ else
+ dec_kn03_be_init();
+
+ /* Clear any leftover errors from the firmware. */
+ dec_ecc_be_ack();
+}
diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
new file mode 100644
index 0000000..3b37909
--- /dev/null
+++ b/arch/mips/dec/int-handler.S
@@ -0,0 +1,297 @@
+/*
+ * arch/mips/dec/int-handler.S
+ *
+ * Copyright (C) 1995, 1996, 1997 Paul M. Antoine and Harald Koerfgen
+ * Copyright (C) 2000, 2001, 2002, 2003 Maciej W. Rozycki
+ *
+ * Written by Ralf Baechle and Andreas Busse, modified for DECStation
+ * support by Paul Antoine and Harald Koerfgen.
+ *
+ * completly rewritten:
+ * Copyright (C) 1998 Harald Koerfgen
+ *
+ * Rewritten extensively for controller-driven IRQ support
+ * by Maciej W. Rozycki.
+ */
+#include <linux/config.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+#include <asm/stackframe.h>
+#include <asm/addrspace.h>
+
+#include <asm/dec/interrupts.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/kn02xa.h>
+#include <asm/dec/kn03.h>
+
+
+ .text
+ .set noreorder
+/*
+ * decstation_handle_int: Interrupt handler for DECStations
+ *
+ * We follow the model in the Indy interrupt code by David Miller, where he
+ * says: a lot of complication here is taken away because:
+ *
+ * 1) We handle one interrupt and return, sitting in a loop
+ * and moving across all the pending IRQ bits in the cause
+ * register is _NOT_ the answer, the common case is one
+ * pending IRQ so optimize in that direction.
+ *
+ * 2) We need not check against bits in the status register
+ * IRQ mask, that would make this routine slow as hell.
+ *
+ * 3) Linux only thinks in terms of all IRQs on or all IRQs
+ * off, nothing in between like BSD spl() brain-damage.
+ *
+ * Furthermore, the IRQs on the DECStations look basically (barring
+ * software IRQs which we don't use at all) like...
+ *
+ * DS2100/3100's, aka kn01, aka Pmax:
+ *
+ * MIPS IRQ Source
+ * -------- ------
+ * 0 Software (ignored)
+ * 1 Software (ignored)
+ * 2 SCSI
+ * 3 Lance Ethernet
+ * 4 DZ11 serial
+ * 5 RTC
+ * 6 Memory Controller
+ * 7 FPU
+ *
+ * DS5000/200, aka kn02, aka 3max:
+ *
+ * MIPS IRQ Source
+ * -------- ------
+ * 0 Software (ignored)
+ * 1 Software (ignored)
+ * 2 TurboChannel
+ * 3 RTC
+ * 4 Reserved
+ * 5 Memory Controller
+ * 6 Reserved
+ * 7 FPU
+ *
+ * DS5000/1xx's, aka kn02ba, aka 3min:
+ *
+ * MIPS IRQ Source
+ * -------- ------
+ * 0 Software (ignored)
+ * 1 Software (ignored)
+ * 2 TurboChannel Slot 0
+ * 3 TurboChannel Slot 1
+ * 4 TurboChannel Slot 2
+ * 5 TurboChannel Slot 3 (ASIC)
+ * 6 Halt button
+ * 7 FPU/R4k timer
+ *
+ * DS5000/2x's, aka kn02ca, aka maxine:
+ *
+ * MIPS IRQ Source
+ * -------- ------
+ * 0 Software (ignored)
+ * 1 Software (ignored)
+ * 2 Periodic Interrupt (100usec)
+ * 3 RTC
+ * 4 I/O write timeout
+ * 5 TurboChannel (ASIC)
+ * 6 Halt Keycode from Access.Bus keyboard (CTRL-ALT-ENTER)
+ * 7 FPU/R4k timer
+ *
+ * DS5000/2xx's, aka kn03, aka 3maxplus:
+ *
+ * MIPS IRQ Source
+ * -------- ------
+ * 0 Software (ignored)
+ * 1 Software (ignored)
+ * 2 System Board (ASIC)
+ * 3 RTC
+ * 4 Reserved
+ * 5 Memory
+ * 6 Halt Button
+ * 7 FPU/R4k timer
+ *
+ * We handle the IRQ according to _our_ priority (see setup.c),
+ * then we just return. If multiple IRQs are pending then we will
+ * just take another exception, big deal.
+ */
+ .align 5
+ NESTED(decstation_handle_int, PT_SIZE, ra)
+ .set noat
+ SAVE_ALL
+ CLI # TEST: interrupts should be off
+ .set at
+ .set noreorder
+
+ /*
+ * Get pending Interrupts
+ */
+ mfc0 t0,CP0_CAUSE # get pending interrupts
+ mfc0 t1,CP0_STATUS
+#ifdef CONFIG_MIPS32
+ lw t2,cpu_fpu_mask
+#endif
+ andi t0,ST0_IM # CAUSE.CE may be non-zero!
+ and t0,t1 # isolate allowed ones
+
+ beqz t0,spurious
+
+#ifdef CONFIG_MIPS32
+ and t2,t0
+ bnez t2,fpu # handle FPU immediately
+#endif
+
+ /*
+ * Find irq with highest priority
+ */
+ PTR_LA t1,cpu_mask_nr_tbl
+1: lw t2,(t1)
+ nop
+ and t2,t0
+ beqz t2,1b
+ addu t1,2*PTRSIZE # delay slot
+
+ /*
+ * Do the low-level stuff
+ */
+ lw a0,(-PTRSIZE)(t1)
+ nop
+ bgez a0,handle_it # irq_nr >= 0?
+ # irq_nr < 0: it is an address
+ nop
+ jr a0
+ # a trick to save a branch:
+ lui t2,(KN03_IOASIC_BASE>>16)&0xffff
+ # upper part of IOASIC Address
+
+/*
+ * Handle "IRQ Controller" Interrupts
+ * Masked Interrupts are still visible and have to be masked "by hand".
+ */
+ FEXPORT(kn02_io_int) # 3max
+ lui t0,(KN02_CSR_BASE>>16)&0xffff
+ # get interrupt status and mask
+ lw t0,(t0)
+ nop
+ andi t1,t0,KN02_IRQ_ALL
+ b 1f
+ srl t0,16 # shift interrupt mask
+
+ FEXPORT(kn02xa_io_int) # 3min/maxine
+ lui t2,(KN02XA_IOASIC_BASE>>16)&0xffff
+ # upper part of IOASIC Address
+
+ FEXPORT(kn03_io_int) # 3max+ (t2 loaded earlier)
+ lw t0,IO_REG_SIR(t2) # get status: IOASIC sir
+ lw t1,IO_REG_SIMR(t2) # get mask: IOASIC simr
+ nop
+
+1: and t0,t1 # mask out allowed ones
+
+ beqz t0,spurious
+
+ /*
+ * Find irq with highest priority
+ */
+ PTR_LA t1,asic_mask_nr_tbl
+2: lw t2,(t1)
+ nop
+ and t2,t0
+ beq zero,t2,2b
+ addu t1,2*PTRSIZE # delay slot
+
+ /*
+ * Do the low-level stuff
+ */
+ lw a0,%lo(-PTRSIZE)(t1)
+ nop
+ bgez a0,handle_it # irq_nr >= 0?
+ # irq_nr < 0: it is an address
+ nop
+ jr a0
+ nop # delay slot
+
+/*
+ * Dispatch low-priority interrupts. We reconsider all status
+ * bits again, which looks like a lose, but it makes the code
+ * simple and O(log n), so it gets compensated.
+ */
+ FEXPORT(cpu_all_int) # HALT, timers, software junk
+ li a0,DEC_CPU_IRQ_BASE
+ srl t0,CAUSEB_IP
+ li t1,CAUSEF_IP>>CAUSEB_IP # mask
+ b 1f
+ li t2,4 # nr of bits / 2
+
+ FEXPORT(kn02_all_int) # impossible ?
+ li a0,KN02_IRQ_BASE
+ li t1,KN02_IRQ_ALL # mask
+ b 1f
+ li t2,4 # nr of bits / 2
+
+ FEXPORT(asic_all_int) # various I/O ASIC junk
+ li a0,IO_IRQ_BASE
+ li t1,IO_IRQ_ALL # mask
+ b 1f
+ li t2,8 # nr of bits / 2
+
+/*
+ * Dispatch DMA interrupts -- O(log n).
+ */
+ FEXPORT(asic_dma_int) # I/O ASIC DMA events
+ li a0,IO_IRQ_BASE+IO_INR_DMA
+ srl t0,IO_INR_DMA
+ li t1,IO_IRQ_DMA>>IO_INR_DMA # mask
+ li t2,8 # nr of bits / 2
+
+ /*
+ * Find irq with highest priority.
+ * Highest irq number takes precedence.
+ */
+1: srlv t3,t1,t2
+2: xor t1,t3
+ and t3,t0,t1
+ beqz t3,3f
+ nop
+ move t0,t3
+ addu a0,t2
+3: srl t2,1
+ bnez t2,2b
+ srlv t3,t1,t2
+
+handle_it:
+ jal do_IRQ
+ move a1,sp
+
+ j ret_from_irq
+ nop
+
+#ifdef CONFIG_MIPS32
+fpu:
+ j handle_fpe_int
+ nop
+#endif
+
+spurious:
+ j spurious_interrupt
+ nop
+ END(decstation_handle_int)
+
+/*
+ * Generic unimplemented interrupt routines -- cpu_mask_nr_tbl
+ * and asic_mask_nr_tbl are initialized to point all interrupts here.
+ * The tables are then filled in by machine-specific initialisation
+ * in dec_setup().
+ */
+ FEXPORT(dec_intr_unimplemented)
+ move a1,t0 # cheats way of printing an arg!
+ PANIC("Unimplemented cpu interrupt! CP0_CAUSE: 0x%08x");
+
+ FEXPORT(asic_intr_unimplemented)
+ move a1,t0 # cheats way of printing an arg!
+ PANIC("Unimplemented asic interrupt! ASIC ISR: 0x%08x");
diff --git a/arch/mips/dec/ioasic-irq.c b/arch/mips/dec/ioasic-irq.c
new file mode 100644
index 0000000..d5bca5d
--- /dev/null
+++ b/arch/mips/dec/ioasic-irq.c
@@ -0,0 +1,157 @@
+/*
+ * linux/arch/mips/dec/ioasic-irq.c
+ *
+ * DEC I/O ASIC interrupts.
+ *
+ * Copyright (c) 2002, 2003 Maciej W. Rozycki
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <asm/dec/ioasic.h>
+#include <asm/dec/ioasic_addrs.h>
+#include <asm/dec/ioasic_ints.h>
+
+
+static DEFINE_SPINLOCK(ioasic_lock);
+
+static int ioasic_irq_base;
+
+
+static inline void unmask_ioasic_irq(unsigned int irq)
+{
+ u32 simr;
+
+ simr = ioasic_read(IO_REG_SIMR);
+ simr |= (1 << (irq - ioasic_irq_base));
+ ioasic_write(IO_REG_SIMR, simr);
+}
+
+static inline void mask_ioasic_irq(unsigned int irq)
+{
+ u32 simr;
+
+ simr = ioasic_read(IO_REG_SIMR);
+ simr &= ~(1 << (irq - ioasic_irq_base));
+ ioasic_write(IO_REG_SIMR, simr);
+}
+
+static inline void clear_ioasic_irq(unsigned int irq)
+{
+ u32 sir;
+
+ sir = ~(1 << (irq - ioasic_irq_base));
+ ioasic_write(IO_REG_SIR, sir);
+}
+
+static inline void enable_ioasic_irq(unsigned int irq)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ioasic_lock, flags);
+ unmask_ioasic_irq(irq);
+ spin_unlock_irqrestore(&ioasic_lock, flags);
+}
+
+static inline void disable_ioasic_irq(unsigned int irq)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ioasic_lock, flags);
+ mask_ioasic_irq(irq);
+ spin_unlock_irqrestore(&ioasic_lock, flags);
+}
+
+
+static inline unsigned int startup_ioasic_irq(unsigned int irq)
+{
+ enable_ioasic_irq(irq);
+ return 0;
+}
+
+#define shutdown_ioasic_irq disable_ioasic_irq
+
+static inline void ack_ioasic_irq(unsigned int irq)
+{
+ spin_lock(&ioasic_lock);
+ mask_ioasic_irq(irq);
+ spin_unlock(&ioasic_lock);
+ fast_iob();
+}
+
+static inline void end_ioasic_irq(unsigned int irq)
+{
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+ enable_ioasic_irq(irq);
+}
+
+static struct hw_interrupt_type ioasic_irq_type = {
+ .typename = "IO-ASIC",
+ .startup = startup_ioasic_irq,
+ .shutdown = shutdown_ioasic_irq,
+ .enable = enable_ioasic_irq,
+ .disable = disable_ioasic_irq,
+ .ack = ack_ioasic_irq,
+ .end = end_ioasic_irq,
+};
+
+
+#define startup_ioasic_dma_irq startup_ioasic_irq
+
+#define shutdown_ioasic_dma_irq shutdown_ioasic_irq
+
+#define enable_ioasic_dma_irq enable_ioasic_irq
+
+#define disable_ioasic_dma_irq disable_ioasic_irq
+
+#define ack_ioasic_dma_irq ack_ioasic_irq
+
+static inline void end_ioasic_dma_irq(unsigned int irq)
+{
+ clear_ioasic_irq(irq);
+ fast_iob();
+ end_ioasic_irq(irq);
+}
+
+static struct hw_interrupt_type ioasic_dma_irq_type = {
+ .typename = "IO-ASIC-DMA",
+ .startup = startup_ioasic_dma_irq,
+ .shutdown = shutdown_ioasic_dma_irq,
+ .enable = enable_ioasic_dma_irq,
+ .disable = disable_ioasic_dma_irq,
+ .ack = ack_ioasic_dma_irq,
+ .end = end_ioasic_dma_irq,
+};
+
+
+void __init init_ioasic_irqs(int base)
+{
+ int i;
+
+ /* Mask interrupts. */
+ ioasic_write(IO_REG_SIMR, 0);
+ fast_iob();
+
+ for (i = base; i < base + IO_INR_DMA; i++) {
+ irq_desc[i].status = IRQ_DISABLED;
+ irq_desc[i].action = 0;
+ irq_desc[i].depth = 1;
+ irq_desc[i].handler = &ioasic_irq_type;
+ }
+ for (; i < base + IO_IRQ_LINES; i++) {
+ irq_desc[i].status = IRQ_DISABLED;
+ irq_desc[i].action = 0;
+ irq_desc[i].depth = 1;
+ irq_desc[i].handler = &ioasic_dma_irq_type;
+ }
+
+ ioasic_irq_base = base;
+}
diff --git a/arch/mips/dec/kn02-irq.c b/arch/mips/dec/kn02-irq.c
new file mode 100644
index 0000000..e0bfcd1
--- /dev/null
+++ b/arch/mips/dec/kn02-irq.c
@@ -0,0 +1,127 @@
+/*
+ * linux/arch/mips/dec/kn02-irq.c
+ *
+ * DECstation 5000/200 (KN02) Control and Status Register
+ * interrupts.
+ *
+ * Copyright (c) 2002, 2003 Maciej W. Rozycki
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <asm/dec/kn02.h>
+
+
+/*
+ * Bits 7:0 of the Control Register are write-only -- the
+ * corresponding bits of the Status Register have a different
+ * meaning. Hence we use a cache. It speeds up things a bit
+ * as well.
+ *
+ * There is no default value -- it has to be initialized.
+ */
+u32 cached_kn02_csr;
+DEFINE_SPINLOCK(kn02_lock);
+
+
+static int kn02_irq_base;
+
+
+static inline void unmask_kn02_irq(unsigned int irq)
+{
+ volatile u32 *csr = (volatile u32 *)KN02_CSR_BASE;
+
+ cached_kn02_csr |= (1 << (irq - kn02_irq_base + 16));
+ *csr = cached_kn02_csr;
+}
+
+static inline void mask_kn02_irq(unsigned int irq)
+{
+ volatile u32 *csr = (volatile u32 *)KN02_CSR_BASE;
+
+ cached_kn02_csr &= ~(1 << (irq - kn02_irq_base + 16));
+ *csr = cached_kn02_csr;
+}
+
+static inline void enable_kn02_irq(unsigned int irq)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&kn02_lock, flags);
+ unmask_kn02_irq(irq);
+ spin_unlock_irqrestore(&kn02_lock, flags);
+}
+
+static inline void disable_kn02_irq(unsigned int irq)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&kn02_lock, flags);
+ mask_kn02_irq(irq);
+ spin_unlock_irqrestore(&kn02_lock, flags);
+}
+
+
+static unsigned int startup_kn02_irq(unsigned int irq)
+{
+ enable_kn02_irq(irq);
+ return 0;
+}
+
+#define shutdown_kn02_irq disable_kn02_irq
+
+static void ack_kn02_irq(unsigned int irq)
+{
+ spin_lock(&kn02_lock);
+ mask_kn02_irq(irq);
+ spin_unlock(&kn02_lock);
+ iob();
+}
+
+static void end_kn02_irq(unsigned int irq)
+{
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+ enable_kn02_irq(irq);
+}
+
+static struct hw_interrupt_type kn02_irq_type = {
+ .typename = "KN02-CSR",
+ .startup = startup_kn02_irq,
+ .shutdown = shutdown_kn02_irq,
+ .enable = enable_kn02_irq,
+ .disable = disable_kn02_irq,
+ .ack = ack_kn02_irq,
+ .end = end_kn02_irq,
+};
+
+
+void __init init_kn02_irqs(int base)
+{
+ volatile u32 *csr = (volatile u32 *)KN02_CSR_BASE;
+ unsigned long flags;
+ int i;
+
+ /* Mask interrupts. */
+ spin_lock_irqsave(&kn02_lock, flags);
+ cached_kn02_csr &= ~KN03_CSR_IOINTEN;
+ *csr = cached_kn02_csr;
+ iob();
+ spin_unlock_irqrestore(&kn02_lock, flags);
+
+ for (i = base; i < base + KN02_IRQ_LINES; i++) {
+ irq_desc[i].status = IRQ_DISABLED;
+ irq_desc[i].action = 0;
+ irq_desc[i].depth = 1;
+ irq_desc[i].handler = &kn02_irq_type;
+ }
+
+ kn02_irq_base = base;
+}
diff --git a/arch/mips/dec/prom/Makefile b/arch/mips/dec/prom/Makefile
new file mode 100644
index 0000000..373822e
--- /dev/null
+++ b/arch/mips/dec/prom/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for the DECstation prom monitor library routines
+# under Linux.
+#
+
+lib-y += init.o memory.o cmdline.o identify.o console.o
+
+lib-$(CONFIG_MIPS32) += locore.o
+lib-$(CONFIG_MIPS64) += call_o32.o
+
+EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/dec/prom/call_o32.S b/arch/mips/dec/prom/call_o32.S
new file mode 100644
index 0000000..0dd56db
--- /dev/null
+++ b/arch/mips/dec/prom/call_o32.S
@@ -0,0 +1,91 @@
+/*
+ * arch/mips/dec/call_o32.S
+ *
+ * O32 interface for the 64 (or N32) ABI.
+ *
+ * Copyright (C) 2002 Maciej W. Rozycki
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <asm/asm.h>
+#include <asm/regdef.h>
+
+/* Maximum number of arguments supported. Must be even! */
+#define O32_ARGC 32
+/* Number of static registers we save. */
+#define O32_STATC 11
+/* Frame size for both of the above. */
+#define O32_FRAMESZ (4 * O32_ARGC + SZREG * O32_STATC)
+
+ .text
+
+/*
+ * O32 function call dispatcher, for interfacing 32-bit ROM routines.
+ *
+ * The standard 64 (N32) calling sequence is supported, with a0
+ * holding a function pointer, a1-a7 -- its first seven arguments
+ * and the stack -- remaining ones (up to O32_ARGC, including a1-a7).
+ * Static registers, gp and fp are preserved, v0 holds a result.
+ * This code relies on the called o32 function for sp and ra
+ * restoration and thus both this dispatcher and the current stack
+ * have to be placed in a KSEGx (or KUSEG) address space. Any
+ * pointers passed have to point to addresses within one of these
+ * spaces as well.
+ */
+NESTED(call_o32, O32_FRAMESZ, ra)
+ REG_SUBU sp,O32_FRAMESZ
+
+ REG_S ra,O32_FRAMESZ-1*SZREG(sp)
+ REG_S fp,O32_FRAMESZ-2*SZREG(sp)
+ REG_S gp,O32_FRAMESZ-3*SZREG(sp)
+ REG_S s7,O32_FRAMESZ-4*SZREG(sp)
+ REG_S s6,O32_FRAMESZ-5*SZREG(sp)
+ REG_S s5,O32_FRAMESZ-6*SZREG(sp)
+ REG_S s4,O32_FRAMESZ-7*SZREG(sp)
+ REG_S s3,O32_FRAMESZ-8*SZREG(sp)
+ REG_S s2,O32_FRAMESZ-9*SZREG(sp)
+ REG_S s1,O32_FRAMESZ-10*SZREG(sp)
+ REG_S s0,O32_FRAMESZ-11*SZREG(sp)
+
+ move jp,a0
+
+ sll a0,a1,zero
+ sll a1,a2,zero
+ sll a2,a3,zero
+ sll a3,a4,zero
+ sw a5,0x10(sp)
+ sw a6,0x14(sp)
+ sw a7,0x18(sp)
+
+ PTR_LA t0,O32_FRAMESZ(sp)
+ PTR_LA t1,0x1c(sp)
+ li t2,O32_ARGC-7
+1:
+ lw t3,(t0)
+ REG_ADDU t0,SZREG
+ sw t3,(t1)
+ REG_SUBU t2,1
+ REG_ADDU t1,4
+ bnez t2,1b
+
+ jalr jp
+
+ REG_L s0,O32_FRAMESZ-11*SZREG(sp)
+ REG_L s1,O32_FRAMESZ-10*SZREG(sp)
+ REG_L s2,O32_FRAMESZ-9*SZREG(sp)
+ REG_L s3,O32_FRAMESZ-8*SZREG(sp)
+ REG_L s4,O32_FRAMESZ-7*SZREG(sp)
+ REG_L s5,O32_FRAMESZ-6*SZREG(sp)
+ REG_L s6,O32_FRAMESZ-5*SZREG(sp)
+ REG_L s7,O32_FRAMESZ-4*SZREG(sp)
+ REG_L gp,O32_FRAMESZ-3*SZREG(sp)
+ REG_L fp,O32_FRAMESZ-2*SZREG(sp)
+ REG_L ra,O32_FRAMESZ-1*SZREG(sp)
+
+ REG_ADDU sp,O32_FRAMESZ
+ jr ra
+END(call_o32)
diff --git a/arch/mips/dec/prom/cmdline.c b/arch/mips/dec/prom/cmdline.c
new file mode 100644
index 0000000..c3490be
--- /dev/null
+++ b/arch/mips/dec/prom/cmdline.c
@@ -0,0 +1,39 @@
+/*
+ * cmdline.c: read the command line passed to us by the PROM.
+ *
+ * Copyright (C) 1998 Harald Koerfgen
+ * Copyright (C) 2002, 2004 Maciej W. Rozycki
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include <asm/bootinfo.h>
+#include <asm/dec/prom.h>
+
+#undef PROM_DEBUG
+
+void __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic)
+{
+ char *arg;
+ int start_arg, i;
+
+ /*
+ * collect args and prepare cmd_line
+ */
+ if (!prom_is_rex(magic))
+ start_arg = 1;
+ else
+ start_arg = 2;
+ for (i = start_arg; i < argc; i++) {
+ arg = (void *)(long)(argv[i]);
+ strcat(arcs_cmdline, arg);
+ if (i < (argc - 1))
+ strcat(arcs_cmdline, " ");
+ }
+
+#ifdef PROM_DEBUG
+ printk("arcs_cmdline: %s\n", &(arcs_cmdline[0]));
+#endif
+}
diff --git a/arch/mips/dec/prom/console.c b/arch/mips/dec/prom/console.c
new file mode 100644
index 0000000..cade16e
--- /dev/null
+++ b/arch/mips/dec/prom/console.c
@@ -0,0 +1,55 @@
+/*
+ * arch/mips/dec/prom/console.c
+ *
+ * DECstation PROM-based early console support.
+ *
+ * Copyright (C) 2004 Maciej W. Rozycki
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <asm/dec/prom.h>
+
+static void __init prom_console_write(struct console *con, const char *s,
+ unsigned int c)
+{
+ static char sfmt[] __initdata = "%%%us";
+ char fmt[13];
+
+ snprintf(fmt, sizeof(fmt), sfmt, c);
+ prom_printf(fmt, s);
+}
+
+static struct console promcons __initdata = {
+ .name = "prom",
+ .write = prom_console_write,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+static int promcons_output __initdata = 0;
+
+void __init register_prom_console(void)
+{
+ if (!promcons_output) {
+ promcons_output = 1;
+ register_console(&promcons);
+ }
+}
+
+void __init unregister_prom_console(void)
+{
+ if (promcons_output) {
+ unregister_console(&promcons);
+ promcons_output = 0;
+ }
+}
+
+void disable_early_printk(void)
+ __attribute__((alias("unregister_prom_console")));
diff --git a/arch/mips/dec/prom/dectypes.h b/arch/mips/dec/prom/dectypes.h
new file mode 100644
index 0000000..707b6f1
--- /dev/null
+++ b/arch/mips/dec/prom/dectypes.h
@@ -0,0 +1,14 @@
+#ifndef DECTYPES
+#define DECTYPES
+
+#define DS2100_3100 1 /* DS2100/3100 Pmax */
+#define DS5000_200 2 /* DS5000/200 3max */
+#define DS5000_1XX 3 /* DS5000/1xx kmin */
+#define DS5000_2X0 4 /* DS5000/2x0 3max+ */
+#define DS5800 5 /* DS5800 Isis */
+#define DS5400 6 /* DS5400 MIPSfair */
+#define DS5000_XX 7 /* DS5000/xx maxine */
+#define DS5500 11 /* DS5500 MIPSfair-2 */
+#define DS5100 12 /* DS5100 MIPSmate */
+
+#endif
diff --git a/arch/mips/dec/prom/identify.c b/arch/mips/dec/prom/identify.c
new file mode 100644
index 0000000..9380588
--- /dev/null
+++ b/arch/mips/dec/prom/identify.c
@@ -0,0 +1,177 @@
+/*
+ * identify.c: machine identification code.
+ *
+ * Copyright (C) 1998 Harald Koerfgen and Paul M. Antoine
+ * Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mc146818rtc.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include <asm/bootinfo.h>
+#include <asm/dec/ioasic.h>
+#include <asm/dec/ioasic_addrs.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/prom.h>
+
+#include "dectypes.h"
+
+extern unsigned long mips_machgroup;
+extern unsigned long mips_machtype;
+
+static const char *dec_system_strings[] = {
+ [MACH_DSUNKNOWN] "unknown DECstation",
+ [MACH_DS23100] "DECstation 2100/3100",
+ [MACH_DS5100] "DECsystem 5100",
+ [MACH_DS5000_200] "DECstation 5000/200",
+ [MACH_DS5000_1XX] "DECstation 5000/1xx",
+ [MACH_DS5000_XX] "Personal DECstation 5000/xx",
+ [MACH_DS5000_2X0] "DECstation 5000/2x0",
+ [MACH_DS5400] "DECsystem 5400",
+ [MACH_DS5500] "DECsystem 5500",
+ [MACH_DS5800] "DECsystem 5800",
+ [MACH_DS5900] "DECsystem 5900",
+};
+
+const char *get_system_type(void)
+{
+#define STR_BUF_LEN 64
+ static char system[STR_BUF_LEN];
+ static int called = 0;
+
+ if (called == 0) {
+ called = 1;
+ snprintf(system, STR_BUF_LEN, "Digital %s",
+ dec_system_strings[mips_machtype]);
+ }
+
+ return system;
+}
+
+
+/*
+ * Setup essential system-specific memory addresses. We need them
+ * early. Semantically the functions belong to prom/init.c, but they
+ * are compact enough we want them inlined. --macro
+ */
+volatile u8 *dec_rtc_base;
+
+EXPORT_SYMBOL(dec_rtc_base);
+
+static inline void prom_init_kn01(void)
+{
+ dec_rtc_base = (void *)KN01_RTC_BASE;
+ dec_kn_slot_size = KN01_SLOT_SIZE;
+}
+
+static inline void prom_init_kn230(void)
+{
+ dec_rtc_base = (void *)KN01_RTC_BASE;
+ dec_kn_slot_size = KN01_SLOT_SIZE;
+}
+
+static inline void prom_init_kn02(void)
+{
+ dec_rtc_base = (void *)KN02_RTC_BASE;
+ dec_kn_slot_size = KN02_SLOT_SIZE;
+}
+
+static inline void prom_init_kn02xa(void)
+{
+ ioasic_base = (void *)KN02XA_IOASIC_BASE;
+ dec_rtc_base = (void *)KN02XA_RTC_BASE;
+ dec_kn_slot_size = IOASIC_SLOT_SIZE;
+}
+
+static inline void prom_init_kn03(void)
+{
+ ioasic_base = (void *)KN03_IOASIC_BASE;
+ dec_rtc_base = (void *)KN03_RTC_BASE;
+ dec_kn_slot_size = IOASIC_SLOT_SIZE;
+}
+
+
+void __init prom_identify_arch(u32 magic)
+{
+ unsigned char dec_cpunum, dec_firmrev, dec_etc, dec_systype;
+ u32 dec_sysid;
+
+ if (!prom_is_rex(magic)) {
+ dec_sysid = simple_strtoul(prom_getenv("systype"),
+ (char **)0, 0);
+ } else {
+ dec_sysid = rex_getsysid();
+ if (dec_sysid == 0) {
+ printk("Zero sysid returned from PROM! "
+ "Assuming a PMAX-like machine.\n");
+ dec_sysid = 1;
+ }
+ }
+
+ dec_cpunum = (dec_sysid & 0xff000000) >> 24;
+ dec_systype = (dec_sysid & 0xff0000) >> 16;
+ dec_firmrev = (dec_sysid & 0xff00) >> 8;
+ dec_etc = dec_sysid & 0xff;
+
+ /* We're obviously one of the DEC machines */
+ mips_machgroup = MACH_GROUP_DEC;
+
+ /*
+ * FIXME: This may not be an exhaustive list of DECStations/Servers!
+ * Put all model-specific initialisation calls here.
+ */
+ switch (dec_systype) {
+ case DS2100_3100:
+ mips_machtype = MACH_DS23100;
+ prom_init_kn01();
+ break;
+ case DS5100: /* DS5100 MIPSMATE */
+ mips_machtype = MACH_DS5100;
+ prom_init_kn230();
+ break;
+ case DS5000_200: /* DS5000 3max */
+ mips_machtype = MACH_DS5000_200;
+ prom_init_kn02();
+ break;
+ case DS5000_1XX: /* DS5000/100 3min */
+ mips_machtype = MACH_DS5000_1XX;
+ prom_init_kn02xa();
+ break;
+ case DS5000_2X0: /* DS5000/240 3max+ or DS5900 bigmax */
+ mips_machtype = MACH_DS5000_2X0;
+ prom_init_kn03();
+ if (!(ioasic_read(IO_REG_SIR) & KN03_IO_INR_3MAXP))
+ mips_machtype = MACH_DS5900;
+ break;
+ case DS5000_XX: /* Personal DS5000/xx maxine */
+ mips_machtype = MACH_DS5000_XX;
+ prom_init_kn02xa();
+ break;
+ case DS5800: /* DS5800 Isis */
+ mips_machtype = MACH_DS5800;
+ break;
+ case DS5400: /* DS5400 MIPSfair */
+ mips_machtype = MACH_DS5400;
+ break;
+ case DS5500: /* DS5500 MIPSfair-2 */
+ mips_machtype = MACH_DS5500;
+ break;
+ default:
+ mips_machtype = MACH_DSUNKNOWN;
+ break;
+ }
+
+ if (mips_machtype == MACH_DSUNKNOWN)
+ printk("This is an %s, id is %x\n",
+ dec_system_strings[mips_machtype], dec_systype);
+ else
+ printk("This is a %s\n", dec_system_strings[mips_machtype]);
+}
diff --git a/arch/mips/dec/prom/init.c b/arch/mips/dec/prom/init.c
new file mode 100644
index 0000000..60f7425
--- /dev/null
+++ b/arch/mips/dec/prom/init.c
@@ -0,0 +1,134 @@
+/*
+ * init.c: PROM library initialisation code.
+ *
+ * Copyright (C) 1998 Harald Koerfgen
+ * Copyright (C) 2002, 2004 Maciej W. Rozycki
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include <asm/bootinfo.h>
+#include <asm/cpu.h>
+#include <asm/processor.h>
+
+#include <asm/dec/prom.h>
+
+
+int (*__rex_bootinit)(void);
+int (*__rex_bootread)(void);
+int (*__rex_getbitmap)(memmap *);
+unsigned long *(*__rex_slot_address)(int);
+void *(*__rex_gettcinfo)(void);
+int (*__rex_getsysid)(void);
+void (*__rex_clear_cache)(void);
+
+int (*__prom_getchar)(void);
+char *(*__prom_getenv)(char *);
+int (*__prom_printf)(char *, ...);
+
+int (*__pmax_open)(char*, int);
+int (*__pmax_lseek)(int, long, int);
+int (*__pmax_read)(int, void *, int);
+int (*__pmax_close)(int);
+
+
+/*
+ * Detect which PROM the DECSTATION has, and set the callback vectors
+ * appropriately.
+ */
+void __init which_prom(s32 magic, s32 *prom_vec)
+{
+ /*
+ * No sign of the REX PROM's magic number means we assume a non-REX
+ * machine (i.e. we're on a DS2100/3100, DS5100 or DS5000/2xx)
+ */
+ if (prom_is_rex(magic)) {
+ /*
+ * Set up prom abstraction structure with REX entry points.
+ */
+ __rex_bootinit =
+ (void *)(long)*(prom_vec + REX_PROM_BOOTINIT);
+ __rex_bootread =
+ (void *)(long)*(prom_vec + REX_PROM_BOOTREAD);
+ __rex_getbitmap =
+ (void *)(long)*(prom_vec + REX_PROM_GETBITMAP);
+ __prom_getchar =
+ (void *)(long)*(prom_vec + REX_PROM_GETCHAR);
+ __prom_getenv =
+ (void *)(long)*(prom_vec + REX_PROM_GETENV);
+ __rex_getsysid =
+ (void *)(long)*(prom_vec + REX_PROM_GETSYSID);
+ __rex_gettcinfo =
+ (void *)(long)*(prom_vec + REX_PROM_GETTCINFO);
+ __prom_printf =
+ (void *)(long)*(prom_vec + REX_PROM_PRINTF);
+ __rex_slot_address =
+ (void *)(long)*(prom_vec + REX_PROM_SLOTADDR);
+ __rex_clear_cache =
+ (void *)(long)*(prom_vec + REX_PROM_CLEARCACHE);
+ } else {
+ /*
+ * Set up prom abstraction structure with non-REX entry points.
+ */
+ __prom_getchar = (void *)PMAX_PROM_GETCHAR;
+ __prom_getenv = (void *)PMAX_PROM_GETENV;
+ __prom_printf = (void *)PMAX_PROM_PRINTF;
+ __pmax_open = (void *)PMAX_PROM_OPEN;
+ __pmax_lseek = (void *)PMAX_PROM_LSEEK;
+ __pmax_read = (void *)PMAX_PROM_READ;
+ __pmax_close = (void *)PMAX_PROM_CLOSE;
+ }
+}
+
+void __init prom_init(void)
+{
+ extern void dec_machine_halt(void);
+ static char cpu_msg[] __initdata =
+ "Sorry, this kernel is compiled for a wrong CPU type!\n";
+ static char r3k_msg[] __initdata =
+ "Please recompile with \"CONFIG_CPU_R3000 = y\".\n";
+ static char r4k_msg[] __initdata =
+ "Please recompile with \"CONFIG_CPU_R4x00 = y\".\n";
+ s32 argc = fw_arg0;
+ s32 argv = fw_arg1;
+ u32 magic = fw_arg2;
+ s32 prom_vec = fw_arg3;
+
+ /*
+ * Determine which PROM we have
+ * (and therefore which machine we're on!)
+ */
+ which_prom(magic, prom_vec);
+
+ if (prom_is_rex(magic))
+ rex_clear_cache();
+
+ /* Register the early console. */
+ register_prom_console();
+
+ /* Were we compiled with the right CPU option? */
+#if defined(CONFIG_CPU_R3000)
+ if ((current_cpu_data.cputype == CPU_R4000SC) ||
+ (current_cpu_data.cputype == CPU_R4400SC)) {
+ printk(cpu_msg);
+ printk(r4k_msg);
+ dec_machine_halt();
+ }
+#endif
+
+#if defined(CONFIG_CPU_R4X00)
+ if ((current_cpu_data.cputype == CPU_R3000) ||
+ (current_cpu_data.cputype == CPU_R3000A)) {
+ printk(cpu_msg);
+ printk(r3k_msg);
+ dec_machine_halt();
+ }
+#endif
+
+ prom_meminit(magic);
+ prom_identify_arch(magic);
+ prom_init_cmdline(argc, argv, magic);
+}
diff --git a/arch/mips/dec/prom/locore.S b/arch/mips/dec/prom/locore.S
new file mode 100644
index 0000000..d9acdce
--- /dev/null
+++ b/arch/mips/dec/prom/locore.S
@@ -0,0 +1,30 @@
+/*
+ * locore.S
+ */
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
+ .text
+
+/*
+ * Simple general exception handling routine. This one is used for the
+ * Memory sizing routine for pmax machines. HK
+ */
+
+NESTED(genexcept_early, 0, sp)
+ .set noat
+ .set noreorder
+
+ mfc0 k0, CP0_STATUS
+ la k1, mem_err
+
+ sw k0, 0(k1)
+
+ mfc0 k0, CP0_EPC
+ nop
+ addiu k0, 4 # skip the causing instruction
+ jr k0
+ rfe
+END(genexcept_early)
+
diff --git a/arch/mips/dec/prom/memory.c b/arch/mips/dec/prom/memory.c
new file mode 100644
index 0000000..e4f6f264
--- /dev/null
+++ b/arch/mips/dec/prom/memory.c
@@ -0,0 +1,130 @@
+/*
+ * memory.c: memory initialisation code.
+ *
+ * Copyright (C) 1998 Harald Koerfgen, Frieder Streffer and Paul M. Antoine
+ * Copyright (C) 2000, 2002 Maciej W. Rozycki
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/types.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/dec/machtype.h>
+#include <asm/dec/prom.h>
+#include <asm/page.h>
+#include <asm/sections.h>
+
+
+volatile unsigned long mem_err = 0; /* So we know an error occurred */
+
+/*
+ * Probe memory in 4MB chunks, waiting for an error to tell us we've fallen
+ * off the end of real memory. Only suitable for the 2100/3100's (PMAX).
+ */
+
+#define CHUNK_SIZE 0x400000
+
+static inline void pmax_setup_memory_region(void)
+{
+ volatile unsigned char *memory_page, dummy;
+ char old_handler[0x80];
+ extern char genexcept_early;
+
+ /* Install exception handler */
+ memcpy(&old_handler, (void *)(KSEG0 + 0x80), 0x80);
+ memcpy((void *)(KSEG0 + 0x80), &genexcept_early, 0x80);
+
+ /* read unmapped and uncached (KSEG1)
+ * DECstations have at least 4MB RAM
+ * Assume less than 480MB of RAM, as this is max for 5000/2xx
+ * FIXME this should be replaced by the first free page!
+ */
+ for (memory_page = (unsigned char *) KSEG1 + CHUNK_SIZE;
+ (mem_err== 0) && (memory_page < ((unsigned char *) KSEG1+0x1E000000));
+ memory_page += CHUNK_SIZE) {
+ dummy = *memory_page;
+ }
+ memcpy((void *)(KSEG0 + 0x80), &old_handler, 0x80);
+
+ add_memory_region(0, (unsigned long)memory_page - KSEG1 - CHUNK_SIZE,
+ BOOT_MEM_RAM);
+}
+
+/*
+ * Use the REX prom calls to get hold of the memory bitmap, and thence
+ * determine memory size.
+ */
+static inline void rex_setup_memory_region(void)
+{
+ int i, bitmap_size;
+ unsigned long mem_start = 0, mem_size = 0;
+ memmap *bm;
+
+ /* some free 64k */
+ bm = (memmap *)KSEG0ADDR(0x28000);
+
+ bitmap_size = rex_getbitmap(bm);
+
+ for (i = 0; i < bitmap_size; i++) {
+ /* FIXME: very simplistically only add full sets of pages */
+ if (bm->bitmap[i] == 0xff)
+ mem_size += (8 * bm->pagesize);
+ else if (!mem_size)
+ mem_start += (8 * bm->pagesize);
+ else {
+ add_memory_region(mem_start, mem_size, BOOT_MEM_RAM);
+ mem_start += mem_size + (8 * bm->pagesize);
+ mem_size = 0;
+ }
+ }
+ if (mem_size)
+ add_memory_region(mem_start, mem_size, BOOT_MEM_RAM);
+}
+
+void __init prom_meminit(u32 magic)
+{
+ if (!prom_is_rex(magic))
+ pmax_setup_memory_region();
+ else
+ rex_setup_memory_region();
+}
+
+unsigned long __init prom_free_prom_memory(void)
+{
+ unsigned long addr, end;
+
+ /*
+ * Free everything below the kernel itself but leave
+ * the first page reserved for the exception handlers.
+ */
+
+#if defined(CONFIG_DECLANCE) || defined(CONFIG_DECLANCE_MODULE)
+ /*
+ * Leave 128 KB reserved for Lance memory for
+ * IOASIC DECstations.
+ *
+ * XXX: save this address for use in dec_lance.c?
+ */
+ if (IOASIC)
+ end = __pa(&_text) - 0x00020000;
+ else
+#endif
+ end = __pa(&_text);
+
+ addr = PAGE_SIZE;
+ while (addr < end) {
+ ClearPageReserved(virt_to_page(__va(addr)));
+ set_page_count(virt_to_page(__va(addr)), 1);
+ free_page((unsigned long)__va(addr));
+ addr += PAGE_SIZE;
+ }
+
+ printk("Freeing unused PROM memory: %ldk freed\n",
+ (end - PAGE_SIZE) >> 10);
+
+ return end - PAGE_SIZE;
+}
diff --git a/arch/mips/dec/promcon.c b/arch/mips/dec/promcon.c
new file mode 100644
index 0000000..9f0972f
--- /dev/null
+++ b/arch/mips/dec/promcon.c
@@ -0,0 +1,55 @@
+/*
+ * Wrap-around code for a console using the
+ * DECstation PROM io-routines.
+ *
+ * Copyright (c) 1998 Harald Koerfgen
+ */
+
+#include <linux/tty.h>
+#include <linux/ptrace.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/fs.h>
+
+#include <asm/dec/prom.h>
+
+static void prom_console_write(struct console *co, const char *s,
+ unsigned count)
+{
+ unsigned i;
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ if (*s == 10)
+ prom_printf("%c", 13);
+ prom_printf("%c", *s++);
+ }
+}
+
+static int __init prom_console_setup(struct console *co, char *options)
+{
+ return 0;
+}
+
+static struct console sercons =
+{
+ .name = "ttyS",
+ .write = prom_console_write,
+ .setup = prom_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+/*
+ * Register console.
+ */
+
+static int __init prom_console_init(void)
+{
+ register_console(&sercons);
+
+ return 0;
+}
+console_initcall(prom_console_init);
diff --git a/arch/mips/dec/reset.c b/arch/mips/dec/reset.c
new file mode 100644
index 0000000..7e4d34d
--- /dev/null
+++ b/arch/mips/dec/reset.c
@@ -0,0 +1,41 @@
+/*
+ * Reset a DECstation machine.
+ *
+ * Copyright (C) 199x the Anonymous
+ * Copyright (C) 2001, 2002, 2003 Maciej W. Rozycki
+ */
+#include <linux/interrupt.h>
+#include <linux/linkage.h>
+
+#include <asm/addrspace.h>
+#include <asm/ptrace.h>
+
+typedef void ATTRIB_NORET (* noret_func_t)(void);
+
+static inline void ATTRIB_NORET back_to_prom(void)
+{
+ noret_func_t func = (void *) KSEG1ADDR(0x1fc00000);
+
+ func();
+}
+
+void ATTRIB_NORET dec_machine_restart(char *command)
+{
+ back_to_prom();
+}
+
+void ATTRIB_NORET dec_machine_halt(void)
+{
+ back_to_prom();
+}
+
+void ATTRIB_NORET dec_machine_power_off(void)
+{
+ /* DECstations don't have a software power switch */
+ back_to_prom();
+}
+
+irqreturn_t dec_intr_halt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ dec_machine_halt();
+}
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
new file mode 100644
index 0000000..6a69309
--- /dev/null
+++ b/arch/mips/dec/setup.c
@@ -0,0 +1,750 @@
+/*
+ * Setup the interrupt stuff.
+ *
+ * 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 Maciej W. Rozycki
+ */
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/param.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <asm/bootinfo.h>
+#include <asm/cpu.h>
+#include <asm/cpu-features.h>
+#include <asm/irq.h>
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+#include <asm/reboot.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>
+
+
+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, struct pt_regs *regs);
+
+extern asmlinkage void decstation_handle_int(void);
+
+spinlock_t ioasic_ssr_lock;
+
+volatile u32 *ioasic_base;
+unsigned long dec_kn_slot_size;
+
+/*
+ * IRQ routing and priority tables. Priorites 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
+};
+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);
+
+static struct irqaction ioirq = {
+ .handler = no_action,
+ .name = "cascade",
+};
+static struct irqaction fpuirq = {
+ .handler = no_action,
+ .name = "fpu",
+};
+
+static struct irqaction busirq = {
+ .flags = SA_INTERRUPT,
+ .name = "bus error",
+};
+
+static struct irqaction haltirq = {
+ .handler = dec_intr_halt,
+ .name = "halt",
+};
+
+
+/*
+ * Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
+ */
+void __init dec_be_init(void)
+{
+ switch (mips_machtype) {
+ case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
+ busirq.flags |= SA_SHIRQ;
+ break;
+ case MACH_DS5000_200: /* DS5000/200 3max */
+ case MACH_DS5000_2X0: /* DS5000/240 3max+ */
+ case MACH_DS5900: /* DS5900 bigmax */
+ board_be_handler = dec_ecc_be_handler;
+ busirq.handler = dec_ecc_be_interrupt;
+ dec_ecc_be_init();
+ break;
+ }
+}
+
+
+extern void dec_time_init(void);
+extern void dec_timer_setup(struct irqaction *);
+
+static void __init decstation_setup(void)
+{
+ board_be_init = dec_be_init;
+ board_time_init = dec_time_init;
+ board_timer_setup = dec_timer_setup;
+
+ wbflush_setup();
+
+ _machine_restart = dec_machine_restart;
+ _machine_halt = dec_machine_halt;
+ _machine_power_off = dec_machine_power_off;
+}
+
+early_initcall(decstation_setup);
+
+/*
+ * 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 } },
+};
+
+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_CPU_IRQ_BASE);
+
+} /* 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 } },
+};
+
+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_CPU_IRQ_BASE);
+
+} /* 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 } },
+};
+
+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(DEC_CPU_IRQ_BASE);
+ 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 } },
+};
+
+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(DEC_CPU_IRQ_BASE);
+ 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 } },
+};
+
+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(DEC_CPU_IRQ_BASE);
+ 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 } },
+};
+
+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(DEC_CPU_IRQ_BASE);
+ 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;
+ }
+ set_except_vector(0, decstation_handle_int);
+
+ /* Free the FPU interrupt if the exception is present. */
+ if (!cpu_has_nofpuex) {
+ cpu_fpu_mask = 0;
+ dec_interrupt[DEC_IRQ_FPU] = -1;
+ }
+
+ /* Register board interrupts: FPU and cascade. */
+ if (dec_interrupt[DEC_IRQ_FPU] >= 0)
+ setup_irq(dec_interrupt[DEC_IRQ_FPU], &fpuirq);
+ if (dec_interrupt[DEC_IRQ_CASCADE] >= 0)
+ setup_irq(dec_interrupt[DEC_IRQ_CASCADE], &ioirq);
+
+ /* Register the bus error interrupt. */
+ if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq.handler)
+ setup_irq(dec_interrupt[DEC_IRQ_BUS], &busirq);
+
+ /* Register the HALT interrupt. */
+ if (dec_interrupt[DEC_IRQ_HALT] >= 0)
+ setup_irq(dec_interrupt[DEC_IRQ_HALT], &haltirq);
+}
+
+EXPORT_SYMBOL(ioasic_base);
+EXPORT_SYMBOL(dec_kn_slot_size);
+EXPORT_SYMBOL(dec_interrupt);
diff --git a/arch/mips/dec/time.c b/arch/mips/dec/time.c
new file mode 100644
index 0000000..dc7091c
--- /dev/null
+++ b/arch/mips/dec/time.c
@@ -0,0 +1,200 @@
+/*
+ * linux/arch/mips/dec/time.c
+ *
+ * Copyright (C) 1991, 1992, 1995 Linus Torvalds
+ * Copyright (C) 2000, 2003 Maciej W. Rozycki
+ *
+ * This file contains the time handling details for PC-style clocks as
+ * found in some MIPS systems.
+ *
+ */
+#include <linux/bcd.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mc146818rtc.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/time.h>
+#include <linux/types.h>
+
+#include <asm/bootinfo.h>
+#include <asm/cpu.h>
+#include <asm/div64.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mipsregs.h>
+#include <asm/sections.h>
+#include <asm/time.h>
+
+#include <asm/dec/interrupts.h>
+#include <asm/dec/ioasic.h>
+#include <asm/dec/ioasic_addrs.h>
+#include <asm/dec/machtype.h>
+
+
+static unsigned long dec_rtc_get_time(void)
+{
+ unsigned int year, mon, day, hour, min, sec, real_year;
+ int i;
+
+ /* The Linux interpretation of the DS1287 clock register contents:
+ * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
+ * RTC registers show the second which has precisely just started.
+ * Let's hope other operating systems interpret the RTC the same way.
+ */
+ /* read RTC exactly on falling edge of update flag */
+ for (i = 0; i < 1000000; i++) /* may take up to 1 second... */
+ if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
+ break;
+ for (i = 0; i < 1000000; i++) /* must try at least 2.228 ms */
+ if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
+ break;
+ /* Isn't this overkill? UIP above should guarantee consistency */
+ do {
+ sec = CMOS_READ(RTC_SECONDS);
+ min = CMOS_READ(RTC_MINUTES);
+ hour = CMOS_READ(RTC_HOURS);
+ day = CMOS_READ(RTC_DAY_OF_MONTH);
+ mon = CMOS_READ(RTC_MONTH);
+ year = CMOS_READ(RTC_YEAR);
+ } while (sec != CMOS_READ(RTC_SECONDS));
+ if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
+ sec = BCD2BIN(sec);
+ min = BCD2BIN(min);
+ hour = BCD2BIN(hour);
+ day = BCD2BIN(day);
+ mon = BCD2BIN(mon);
+ year = BCD2BIN(year);
+ }
+ /*
+ * The PROM will reset the year to either '72 or '73.
+ * Therefore we store the real year separately, in one
+ * of unused BBU RAM locations.
+ */
+ real_year = CMOS_READ(RTC_DEC_YEAR);
+ year += real_year - 72 + 2000;
+
+ return mktime(year, mon, day, hour, min, sec);
+}
+
+/*
+ * In order to set the CMOS clock precisely, dec_rtc_set_mmss has to
+ * be called 500 ms after the second nowtime has started, because when
+ * nowtime is written into the registers of the CMOS clock, it will
+ * jump to the next second precisely 500 ms later. Check the Dallas
+ * DS1287 data sheet for details.
+ */
+static int dec_rtc_set_mmss(unsigned long nowtime)
+{
+ int retval = 0;
+ int real_seconds, real_minutes, cmos_minutes;
+ unsigned char save_control, save_freq_select;
+
+ /* tell the clock it's being set */
+ save_control = CMOS_READ(RTC_CONTROL);
+ CMOS_WRITE((save_control | RTC_SET), RTC_CONTROL);
+
+ /* stop and reset prescaler */
+ save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
+ CMOS_WRITE((save_freq_select | RTC_DIV_RESET2), RTC_FREQ_SELECT);
+
+ cmos_minutes = CMOS_READ(RTC_MINUTES);
+ if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
+ cmos_minutes = BCD2BIN(cmos_minutes);
+
+ /*
+ * since we're only adjusting minutes and seconds,
+ * don't interfere with hour overflow. This avoids
+ * messing with unknown time zones but requires your
+ * RTC not to be off by more than 15 minutes
+ */
+ real_seconds = nowtime % 60;
+ real_minutes = nowtime / 60;
+ if (((abs(real_minutes - cmos_minutes) + 15) / 30) & 1)
+ real_minutes += 30; /* correct for half hour time zone */
+ real_minutes %= 60;
+
+ if (abs(real_minutes - cmos_minutes) < 30) {
+ if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
+ real_seconds = BIN2BCD(real_seconds);
+ real_minutes = BIN2BCD(real_minutes);
+ }
+ CMOS_WRITE(real_seconds, RTC_SECONDS);
+ CMOS_WRITE(real_minutes, RTC_MINUTES);
+ } else {
+ printk(KERN_WARNING
+ "set_rtc_mmss: can't update from %d to %d\n",
+ cmos_minutes, real_minutes);
+ retval = -1;
+ }
+
+ /* The following flags have to be released exactly in this order,
+ * otherwise the DS1287 will not reset the oscillator and will not
+ * update precisely 500 ms later. You won't find this mentioned
+ * in the Dallas Semiconductor data sheets, but who believes data
+ * sheets anyway ... -- Markus Kuhn
+ */
+ CMOS_WRITE(save_control, RTC_CONTROL);
+ CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
+
+ return retval;
+}
+
+
+static int dec_timer_state(void)
+{
+ return (CMOS_READ(RTC_REG_C) & RTC_PF) != 0;
+}
+
+static void dec_timer_ack(void)
+{
+ CMOS_READ(RTC_REG_C); /* Ack the RTC interrupt. */
+}
+
+static unsigned int dec_ioasic_hpt_read(void)
+{
+ /*
+ * The free-running counter is 32-bit which is good for about
+ * 2 minutes, 50 seconds at possible count rates of up to 25MHz.
+ */
+ return ioasic_read(IO_REG_FCTR);
+}
+
+static void dec_ioasic_hpt_init(unsigned int count)
+{
+ ioasic_write(IO_REG_FCTR, ioasic_read(IO_REG_FCTR) - count);
+}
+
+
+void __init dec_time_init(void)
+{
+ rtc_get_time = dec_rtc_get_time;
+ rtc_set_mmss = dec_rtc_set_mmss;
+
+ mips_timer_state = dec_timer_state;
+ mips_timer_ack = dec_timer_ack;
+
+ if (!cpu_has_counter && IOASIC) {
+ /* For pre-R4k systems we use the I/O ASIC's counter. */
+ mips_hpt_read = dec_ioasic_hpt_read;
+ mips_hpt_init = dec_ioasic_hpt_init;
+ }
+
+ /* Set up the rate of periodic DS1287 interrupts. */
+ CMOS_WRITE(RTC_REF_CLCK_32KHZ | (16 - LOG_2_HZ), RTC_REG_A);
+}
+
+EXPORT_SYMBOL(do_settimeofday);
+
+void __init dec_timer_setup(struct irqaction *irq)
+{
+ setup_irq(dec_interrupt[DEC_IRQ_RTC], irq);
+
+ /* Enable periodic DS1287 interrupts. */
+ CMOS_WRITE(CMOS_READ(RTC_REG_B) | RTC_PIE, RTC_REG_B);
+}
diff --git a/arch/mips/dec/wbflush.c b/arch/mips/dec/wbflush.c
new file mode 100644
index 0000000..925c052
--- /dev/null
+++ b/arch/mips/dec/wbflush.c
@@ -0,0 +1,94 @@
+/*
+ * Setup the right wbflush routine for the different DECstations.
+ *
+ * Created with information from:
+ * DECstation 3100 Desktop Workstation Functional Specification
+ * DECstation 5000/200 KN02 System Module Functional Specification
+ * mipsel-linux-objdump --disassemble vmunix | grep "wbflush" :-)
+ *
+ * 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) 2002 Maciej W. Rozycki
+ */
+
+#include <linux/init.h>
+
+#include <asm/bootinfo.h>
+#include <asm/system.h>
+#include <asm/wbflush.h>
+
+static void wbflush_kn01(void);
+static void wbflush_kn210(void);
+static void wbflush_mips(void);
+
+void (*__wbflush) (void);
+
+void __init wbflush_setup(void)
+{
+ switch (mips_machtype) {
+ case MACH_DS23100:
+ case MACH_DS5000_200: /* DS5000 3max */
+ __wbflush = wbflush_kn01;
+ break;
+ case MACH_DS5100: /* DS5100 MIPSMATE */
+ __wbflush = wbflush_kn210;
+ break;
+ case MACH_DS5000_1XX: /* DS5000/100 3min */
+ case MACH_DS5000_XX: /* Personal DS5000/2x */
+ case MACH_DS5000_2X0: /* DS5000/240 3max+ */
+ case MACH_DS5900: /* DS5900 bigmax */
+ default:
+ __wbflush = wbflush_mips;
+ break;
+ }
+}
+
+/*
+ * For the DS3100 and DS5000/200 the R2020/R3220 writeback buffer functions
+ * as part of Coprocessor 0.
+ */
+static void wbflush_kn01(void)
+{
+ asm(".set\tpush\n\t"
+ ".set\tnoreorder\n\t"
+ "1:\tbc0f\t1b\n\t"
+ "nop\n\t"
+ ".set\tpop");
+}
+
+/*
+ * For the DS5100 the writeback buffer seems to be a part of Coprocessor 3.
+ * But CP3 has to enabled first.
+ */
+static void wbflush_kn210(void)
+{
+ asm(".set\tpush\n\t"
+ ".set\tnoreorder\n\t"
+ "mfc0\t$2,$12\n\t"
+ "lui\t$3,0x8000\n\t"
+ "or\t$3,$2,$3\n\t"
+ "mtc0\t$3,$12\n\t"
+ "nop\n"
+ "1:\tbc3f\t1b\n\t"
+ "nop\n\t"
+ "mtc0\t$2,$12\n\t"
+ "nop\n\t"
+ ".set\tpop"
+ : : : "$2", "$3");
+}
+
+/*
+ * I/O ASIC systems use a standard writeback buffer that gets flushed
+ * upon an uncached read.
+ */
+static void wbflush_mips(void)
+{
+ __fast_iob();
+}
+
+#include <linux/module.h>
+
+EXPORT_SYMBOL(__wbflush);