diff options
Diffstat (limited to 'arch/mips/dec')
| -rw-r--r-- | arch/mips/dec/Makefile | 4 | ||||
| -rw-r--r-- | arch/mips/dec/ecc-berr.c | 48 | ||||
| -rw-r--r-- | arch/mips/dec/int-handler.S | 18 | ||||
| -rw-r--r-- | arch/mips/dec/kn01-berr.c | 201 | ||||
| -rw-r--r-- | arch/mips/dec/kn02-irq.c | 13 | ||||
| -rw-r--r-- | arch/mips/dec/kn02xa-berr.c | 139 | ||||
| -rw-r--r-- | arch/mips/dec/prom/identify.c | 28 | ||||
| -rw-r--r-- | arch/mips/dec/prom/init.c | 16 | ||||
| -rw-r--r-- | arch/mips/dec/prom/memory.c | 14 | ||||
| -rw-r--r-- | arch/mips/dec/reset.c | 2 | ||||
| -rw-r--r-- | arch/mips/dec/setup.c | 57 |
11 files changed, 460 insertions, 80 deletions
diff --git a/arch/mips/dec/Makefile b/arch/mips/dec/Makefile index 688757a97cb8..ed181fdc3ac9 100644 --- a/arch/mips/dec/Makefile +++ b/arch/mips/dec/Makefile @@ -2,8 +2,8 @@ # 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-y := ecc-berr.o int-handler.o ioasic-irq.o kn01-berr.o \ + kn02-irq.o kn02xa-berr.o reset.o setup.o time.o obj-$(CONFIG_PROM_CONSOLE) += promcon.o obj-$(CONFIG_CPU_HAS_WB) += wbflush.o diff --git a/arch/mips/dec/ecc-berr.c b/arch/mips/dec/ecc-berr.c index 6dbce92eb068..cc24c5ed0c05 100644 --- a/arch/mips/dec/ecc-berr.c +++ b/arch/mips/dec/ecc-berr.c @@ -6,7 +6,7 @@ * 5000/240 (KN03), 5000/260 (KN05) and DECsystem 5900 (KN03), * 5900/260 (KN05) systems. * - * Copyright (c) 2003 Maciej W. Rozycki + * Copyright (c) 2003, 2005 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 @@ -15,6 +15,7 @@ */ #include <linux/init.h> +#include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/spinlock.h> @@ -57,7 +58,7 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) const char *kind, *agent, *cycle, *event; const char *status = "", *xbit = "", *fmt = ""; - dma_addr_t address; + unsigned long address; u16 syn = 0, sngl; int i = 0; @@ -66,7 +67,7 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) u32 chksyn = *kn0x_chksyn; int action = MIPS_BE_FATAL; - /* For non-ECC ack ASAP, so any subsequent errors get caught. */ + /* For non-ECC ack ASAP, so that any subsequent errors get caught. */ if ((erraddr & (KN0X_EAR_VALID | KN0X_EAR_ECCERR)) == KN0X_EAR_VALID) dec_ecc_be_ack(); @@ -74,7 +75,7 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) if (!(erraddr & KN0X_EAR_VALID)) { /* No idea what happened. */ - printk(KERN_ALERT "Unidentified bus error %s.\n", kind); + printk(KERN_ALERT "Unidentified bus error %s\n", kind); return action; } @@ -126,7 +127,7 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) /* Ack now, no rewrite will happen. */ dec_ecc_be_ack(); - fmt = KERN_ALERT "%s" "invalid.\n"; + fmt = KERN_ALERT "%s" "invalid\n"; } else { sngl = syn & KN0X_ESR_SNGLO; syn &= KN0X_ESR_SYNLO; @@ -144,7 +145,8 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) } else if (!sngl) { status = dbestr; } else { - volatile u32 *ptr = (void *)KSEG1ADDR(address); + volatile u32 *ptr = + (void *)CKSEG1ADDR(address); *ptr = *ptr; /* Rewrite. */ iob(); @@ -160,12 +162,12 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) if (syn == 0x01) { fmt = KERN_ALERT "%s" "%#04x -- %s bit error " - "at check bit C%s.\n"; + "at check bit C%s\n"; xbit = "X"; } else { fmt = KERN_ALERT "%s" "%#04x -- %s bit error " - "at check bit C%s%u.\n"; + "at check bit C%s%u\n"; } i = syn >> 2; } else { @@ -175,16 +177,16 @@ static int dec_ecc_be_backend(struct pt_regs *regs, int is_fixup, int invoker) if (i < 32) fmt = KERN_ALERT "%s" "%#04x -- %s bit error " - "at data bit D%s%u.\n"; + "at data bit D%s%u\n"; else fmt = KERN_ALERT "%s" - "%#04x -- %s bit error.\n"; + "%#04x -- %s bit error\n"; } } } if (action != MIPS_BE_FIXUP) - printk(KERN_ALERT "Bus error %s: %s %s %s at %#010lx.\n", + 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) @@ -203,11 +205,11 @@ 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; + return IRQ_HANDLED; /* - * FIXME: Find affected processes and kill them, otherwise we - * must die. + * FIXME: Find the 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. @@ -225,16 +227,16 @@ irqreturn_t dec_ecc_be_interrupt(int irq, void *dev_id, struct pt_regs *regs) */ static inline void dec_kn02_be_init(void) { - volatile u32 *csr = (void *)KN02_CSR_BASE; + volatile u32 *csr = (void *)CKSEG1ADDR(KN02_SLOT_BASE + KN02_CSR); unsigned long flags; - kn0x_erraddr = (void *)(KN02_SLOT_BASE + KN02_ERRADDR); - kn0x_chksyn = (void *)(KN02_SLOT_BASE + KN02_CHKSYN); + kn0x_erraddr = (void *)CKSEG1ADDR(KN02_SLOT_BASE + KN02_ERRADDR); + kn0x_chksyn = (void *)CKSEG1ADDR(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; + cached_kn02_csr = *csr | KN02_CSR_LEDS; /* Set normal ECC detection and generation. */ cached_kn02_csr &= ~(KN02_CSR_DIAGCHK | KN02_CSR_DIAGGEN); @@ -248,11 +250,11 @@ static inline void dec_kn02_be_init(void) 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); + volatile u32 *mcr = (void *)CKSEG1ADDR(KN03_SLOT_BASE + IOASIC_MCR); + volatile u32 *mbcs = (void *)CKSEG1ADDR(KN4K_SLOT_BASE + KN4K_MB_CSR); - kn0x_erraddr = (void *)(KN03_SLOT_BASE + IOASIC_ERRADDR); - kn0x_chksyn = (void *)(KN03_SLOT_BASE + IOASIC_CHKSYN); + kn0x_erraddr = (void *)CKSEG1ADDR(KN03_SLOT_BASE + IOASIC_ERRADDR); + kn0x_chksyn = (void *)CKSEG1ADDR(KN03_SLOT_BASE + IOASIC_CHKSYN); /* * Set normal ECC detection and generation, enable ECC correction. @@ -264,7 +266,7 @@ static inline void dec_kn03_be_init(void) *mcr = (*mcr & ~(KN03_MCR_DIAGCHK | KN03_MCR_DIAGGEN)) | KN03_MCR_CORRECT; if (current_cpu_data.cputype == CPU_R4400SC) - *mbcs |= KN05_MB_CSR_EE; + *mbcs |= KN4K_MB_CSR_EE; fast_iob(); } diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S index c89768d5c4e5..41fa372007bf 100644 --- a/arch/mips/dec/int-handler.S +++ b/arch/mips/dec/int-handler.S @@ -2,9 +2,9 @@ * 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 + * Copyright (C) 2000, 2001, 2002, 2003, 2005 Maciej W. Rozycki * - * Written by Ralf Baechle and Andreas Busse, modified for DECStation + * Written by Ralf Baechle and Andreas Busse, modified for DECstation * support by Paul Antoine and Harald Koerfgen. * * completly rewritten: @@ -14,11 +14,12 @@ * by Maciej W. Rozycki. */ #include <linux/config.h> + +#include <asm/addrspace.h> #include <asm/asm.h> -#include <asm/regdef.h> #include <asm/mipsregs.h> +#include <asm/regdef.h> #include <asm/stackframe.h> -#include <asm/addrspace.h> #include <asm/dec/interrupts.h> #include <asm/dec/ioasic_addrs.h> @@ -28,11 +29,14 @@ #include <asm/dec/kn02xa.h> #include <asm/dec/kn03.h> +#define KN02_CSR_BASE CKSEG1ADDR(KN02_SLOT_BASE + KN02_CSR) +#define KN02XA_IOASIC_BASE CKSEG1ADDR(KN02XA_SLOT_BASE + IOASIC_IOCTL) +#define KN03_IOASIC_BASE CKSEG1ADDR(KN03_SLOT_BASE + IOASIC_IOCTL) .text .set noreorder /* - * decstation_handle_int: Interrupt handler for DECStations + * 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: @@ -48,7 +52,7 @@ * 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 + * 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: @@ -61,7 +65,7 @@ * 3 Lance Ethernet * 4 DZ11 serial * 5 RTC - * 6 Memory Controller + * 6 Memory Controller & Video * 7 FPU * * DS5000/200, aka kn02, aka 3max: diff --git a/arch/mips/dec/kn01-berr.c b/arch/mips/dec/kn01-berr.c new file mode 100644 index 000000000000..b9271db9bc76 --- /dev/null +++ b/arch/mips/dec/kn01-berr.c @@ -0,0 +1,201 @@ +/* + * linux/arch/mips/dec/kn01-berr.c + * + * Bus error event handling code for DECstation/DECsystem 3100 + * and 2100 (KN01) systems equipped with parity error detection + * logic. + * + * Copyright (c) 2005 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/interrupt.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/types.h> + +#include <asm/inst.h> +#include <asm/mipsregs.h> +#include <asm/page.h> +#include <asm/system.h> +#include <asm/traps.h> +#include <asm/uaccess.h> + +#include <asm/dec/kn01.h> + + +/* CP0 hazard avoidance. */ +#define BARRIER \ + __asm__ __volatile__( \ + ".set push\n\t" \ + ".set noreorder\n\t" \ + "nop\n\t" \ + ".set pop\n\t") + +/* + * 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. + */ +u16 cached_kn01_csr; +DEFINE_SPINLOCK(kn01_lock); + + +static inline void dec_kn01_be_ack(void) +{ + volatile u16 *csr = (void *)CKSEG1ADDR(KN01_SLOT_BASE + KN01_CSR); + unsigned long flags; + + spin_lock_irqsave(&kn01_lock, flags); + + *csr = cached_kn01_csr | KN01_CSR_MEMERR; /* Clear bus IRQ. */ + iob(); + + spin_unlock_irqrestore(&kn01_lock, flags); +} + +static int dec_kn01_be_backend(struct pt_regs *regs, int is_fixup, int invoker) +{ + volatile u32 *kn01_erraddr = (void *)CKSEG1ADDR(KN01_SLOT_BASE + + KN01_ERRADDR); + + static const char excstr[] = "exception"; + static const char intstr[] = "interrupt"; + static const char cpustr[] = "CPU"; + static const char mreadstr[] = "memory read"; + static const char readstr[] = "read"; + static const char writestr[] = "write"; + static const char timestr[] = "timeout"; + static const char paritystr[] = "parity error"; + + int data = regs->cp0_cause & 4; + unsigned int __user *pc = (unsigned int __user *)regs->cp0_epc + + ((regs->cp0_cause & CAUSEF_BD) != 0); + union mips_instruction insn; + unsigned long entrylo, offset; + long asid, entryhi, vaddr; + + const char *kind, *agent, *cycle, *event; + unsigned long address; + + u32 erraddr = *kn01_erraddr; + int action = MIPS_BE_FATAL; + + /* Ack ASAP, so that any subsequent errors get caught. */ + dec_kn01_be_ack(); + + kind = invoker ? intstr : excstr; + + agent = cpustr; + + if (invoker) + address = erraddr; + else { + /* Bloody hardware doesn't record the address for reads... */ + if (data) { + /* This never faults. */ + __get_user(insn.word, pc); + vaddr = regs->regs[insn.i_format.rs] + + insn.i_format.simmediate; + } else + vaddr = (long)pc; + if (KSEGX(vaddr) == CKSEG0 || KSEGX(vaddr) == CKSEG1) + address = CPHYSADDR(vaddr); + else { + /* Peek at what physical address the CPU used. */ + asid = read_c0_entryhi(); + entryhi = asid & (PAGE_SIZE - 1); + entryhi |= vaddr & ~(PAGE_SIZE - 1); + write_c0_entryhi(entryhi); + BARRIER; + tlb_probe(); + /* No need to check for presence. */ + tlb_read(); + entrylo = read_c0_entrylo0(); + write_c0_entryhi(asid); + offset = vaddr & (PAGE_SIZE - 1); + address = (entrylo & ~(PAGE_SIZE - 1)) | offset; + } + } + + /* Treat low 256MB as memory, high -- as I/O. */ + if (address < 0x10000000) { + cycle = mreadstr; + event = paritystr; + } else { + cycle = invoker ? writestr : readstr; + event = timestr; + } + + if (is_fixup) + action = MIPS_BE_FIXUP; + + if (action != MIPS_BE_FIXUP) + printk(KERN_ALERT "Bus error %s: %s %s %s at %#010lx\n", + kind, agent, cycle, event, address); + + return action; +} + +int dec_kn01_be_handler(struct pt_regs *regs, int is_fixup) +{ + return dec_kn01_be_backend(regs, is_fixup, 0); +} + +irqreturn_t dec_kn01_be_interrupt(int irq, void *dev_id, + struct pt_regs *regs) +{ + volatile u16 *csr = (void *)CKSEG1ADDR(KN01_SLOT_BASE + KN01_CSR); + int action; + + if (!(*csr & KN01_CSR_MEMERR)) + return IRQ_NONE; /* Must have been video. */ + + action = dec_kn01_be_backend(regs, 0, 1); + + if (action == MIPS_BE_DISCARD) + return IRQ_HANDLED; + + /* + * FIXME: Find the 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); +} + + +void __init dec_kn01_be_init(void) +{ + volatile u16 *csr = (void *)CKSEG1ADDR(KN01_SLOT_BASE + KN01_CSR); + unsigned long flags; + + spin_lock_irqsave(&kn01_lock, flags); + + /* Preset write-only bits of the Control Register cache. */ + cached_kn01_csr = *csr; + cached_kn01_csr &= KN01_CSR_STATUS | KN01_CSR_PARDIS | KN01_CSR_TXDIS; + cached_kn01_csr |= KN01_CSR_LEDS; + + /* Enable parity error detection. */ + cached_kn01_csr &= ~KN01_CSR_PARDIS; + *csr = cached_kn01_csr; + iob(); + + spin_unlock_irqrestore(&kn01_lock, flags); + + /* Clear any leftover errors from the firmware. */ + dec_kn01_be_ack(); +} diff --git a/arch/mips/dec/kn02-irq.c b/arch/mips/dec/kn02-irq.c index e0bfcd1521e2..898bed502a34 100644 --- a/arch/mips/dec/kn02-irq.c +++ b/arch/mips/dec/kn02-irq.c @@ -4,7 +4,7 @@ * DECstation 5000/200 (KN02) Control and Status Register * interrupts. * - * Copyright (c) 2002, 2003 Maciej W. Rozycki + * Copyright (c) 2002, 2003, 2005 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 @@ -37,7 +37,8 @@ static int kn02_irq_base; static inline void unmask_kn02_irq(unsigned int irq) { - volatile u32 *csr = (volatile u32 *)KN02_CSR_BASE; + volatile u32 *csr = (volatile u32 *)CKSEG1ADDR(KN02_SLOT_BASE + + KN02_CSR); cached_kn02_csr |= (1 << (irq - kn02_irq_base + 16)); *csr = cached_kn02_csr; @@ -45,7 +46,8 @@ static inline void unmask_kn02_irq(unsigned int irq) static inline void mask_kn02_irq(unsigned int irq) { - volatile u32 *csr = (volatile u32 *)KN02_CSR_BASE; + volatile u32 *csr = (volatile u32 *)CKSEG1ADDR(KN02_SLOT_BASE + + KN02_CSR); cached_kn02_csr &= ~(1 << (irq - kn02_irq_base + 16)); *csr = cached_kn02_csr; @@ -105,13 +107,14 @@ static struct hw_interrupt_type kn02_irq_type = { void __init init_kn02_irqs(int base) { - volatile u32 *csr = (volatile u32 *)KN02_CSR_BASE; + volatile u32 *csr = (volatile u32 *)CKSEG1ADDR(KN02_SLOT_BASE + + KN02_CSR); unsigned long flags; int i; /* Mask interrupts. */ spin_lock_irqsave(&kn02_lock, flags); - cached_kn02_csr &= ~KN03_CSR_IOINTEN; + cached_kn02_csr &= ~KN02_CSR_IOINTEN; *csr = cached_kn02_csr; iob(); spin_unlock_irqrestore(&kn02_lock, flags); diff --git a/arch/mips/dec/kn02xa-berr.c b/arch/mips/dec/kn02xa-berr.c new file mode 100644 index 000000000000..6cd3f94f79fe --- /dev/null +++ b/arch/mips/dec/kn02xa-berr.c @@ -0,0 +1,139 @@ +/* + * linux/arch/mips/dec/kn02xa-berr.c + * + * Bus error event handling code for 5000-series systems equipped + * with parity error detection logic, i.e. DECstation/DECsystem + * 5000/120, /125, /133 (KN02-BA), 5000/150 (KN04-BA) and Personal + * DECstation/DECsystem 5000/20, /25, /33 (KN02-CA), 5000/50 + * (KN04-CA) systems. + * + * Copyright (c) 2005 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/interrupt.h> +#include <linux/kernel.h> +#include <linux/types.h> + +#include <asm/addrspace.h> +#include <asm/system.h> +#include <asm/traps.h> + +#include <asm/dec/kn02ca.h> +#include <asm/dec/kn02xa.h> +#include <asm/dec/kn05.h> + +static inline void dec_kn02xa_be_ack(void) +{ + volatile u32 *mer = (void *)CKSEG1ADDR(KN02XA_MER); + volatile u32 *mem_intr = (void *)CKSEG1ADDR(KN02XA_MEM_INTR); + + *mer = KN02CA_MER_INTR; /* Clear errors; keep the ARC IRQ. */ + *mem_intr = 0; /* Any write clears the bus IRQ. */ + iob(); +} + +static int dec_kn02xa_be_backend(struct pt_regs *regs, int is_fixup, + int invoker) +{ + volatile u32 *kn02xa_mer = (void *)CKSEG1ADDR(KN02XA_MER); + volatile u32 *kn02xa_ear = (void *)CKSEG1ADDR(KN02XA_EAR); + + static const char excstr[] = "exception"; + static const char intstr[] = "interrupt"; + static const char cpustr[] = "CPU"; + static const char mreadstr[] = "memory read"; + static const char readstr[] = "read"; + static const char writestr[] = "write"; + static const char timestr[] = "timeout"; + static const char paritystr[] = "parity error"; + static const char lanestat[][4] = { " OK", "BAD" }; + + const char *kind, *agent, *cycle, *event; + unsigned long address; + + u32 mer = *kn02xa_mer; + u32 ear = *kn02xa_ear; + int action = MIPS_BE_FATAL; + + /* Ack ASAP, so that any subsequent errors get caught. */ + dec_kn02xa_be_ack(); + + kind = invoker ? intstr : excstr; + + /* No DMA errors? */ + agent = cpustr; + + address = ear & KN02XA_EAR_ADDRESS; + + /* Low 256MB is decoded as memory, high -- as TC. */ + if (address < 0x10000000) { + cycle = mreadstr; + event = paritystr; + } else { + cycle = invoker ? writestr : readstr; + event = timestr; + } + + if (is_fixup) + action = MIPS_BE_FIXUP; + + 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 && address < 0x10000000) + printk(KERN_ALERT " Byte lane status %#3x -- " + "#3: %s, #2: %s, #1: %s, #0: %s\n", + (mer & KN02XA_MER_BYTERR) >> 8, + lanestat[(mer & KN02XA_MER_BYTERR_3) != 0], + lanestat[(mer & KN02XA_MER_BYTERR_2) != 0], + lanestat[(mer & KN02XA_MER_BYTERR_1) != 0], + lanestat[(mer & KN02XA_MER_BYTERR_0) != 0]); + + return action; +} + +int dec_kn02xa_be_handler(struct pt_regs *regs, int is_fixup) +{ + return dec_kn02xa_be_backend(regs, is_fixup, 0); +} + +irqreturn_t dec_kn02xa_be_interrupt(int irq, void *dev_id, + struct pt_regs *regs) +{ + int action = dec_kn02xa_be_backend(regs, 0, 1); + + if (action == MIPS_BE_DISCARD) + return IRQ_HANDLED; + + /* + * FIXME: Find the 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); +} + + +void __init dec_kn02xa_be_init(void) +{ + volatile u32 *mbcs = (void *)CKSEG1ADDR(KN4K_SLOT_BASE + KN4K_MB_CSR); + + /* For KN04 we need to make sure EE (?) is enabled in the MB. */ + if (current_cpu_data.cputype == CPU_R4000SC) + *mbcs |= KN4K_MB_CSR_EE; + fast_iob(); + + /* Clear any leftover errors from the firmware. */ + dec_kn02xa_be_ack(); +} diff --git a/arch/mips/dec/prom/identify.c b/arch/mips/dec/prom/identify.c index 9380588cb15c..81d5e878ddce 100644 --- a/arch/mips/dec/prom/identify.c +++ b/arch/mips/dec/prom/identify.c @@ -2,7 +2,7 @@ * identify.c: machine identification code. * * Copyright (C) 1998 Harald Koerfgen and Paul M. Antoine - * Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki + * Copyright (C) 2002, 2003, 2004, 2005 Maciej W. Rozycki */ #include <linux/init.h> #include <linux/kernel.h> @@ -12,6 +12,7 @@ #include <linux/types.h> #include <asm/bootinfo.h> + #include <asm/dec/ioasic.h> #include <asm/dec/ioasic_addrs.h> #include <asm/dec/kn01.h> @@ -21,6 +22,7 @@ #include <asm/dec/kn03.h> #include <asm/dec/kn230.h> #include <asm/dec/prom.h> +#include <asm/dec/system.h> #include "dectypes.h" @@ -68,34 +70,44 @@ EXPORT_SYMBOL(dec_rtc_base); static inline void prom_init_kn01(void) { - dec_rtc_base = (void *)KN01_RTC_BASE; + dec_kn_slot_base = KN01_SLOT_BASE; dec_kn_slot_size = KN01_SLOT_SIZE; + + dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN01_RTC); } static inline void prom_init_kn230(void) { - dec_rtc_base = (void *)KN01_RTC_BASE; + dec_kn_slot_base = KN01_SLOT_BASE; dec_kn_slot_size = KN01_SLOT_SIZE; + + dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN01_RTC); } static inline void prom_init_kn02(void) { - dec_rtc_base = (void *)KN02_RTC_BASE; + dec_kn_slot_base = KN02_SLOT_BASE; dec_kn_slot_size = KN02_SLOT_SIZE; + + dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN02_RTC); } static inline void prom_init_kn02xa(void) { - ioasic_base = (void *)KN02XA_IOASIC_BASE; - dec_rtc_base = (void *)KN02XA_RTC_BASE; + dec_kn_slot_base = KN02XA_SLOT_BASE; dec_kn_slot_size = IOASIC_SLOT_SIZE; + + ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL); + dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY); } static inline void prom_init_kn03(void) { - ioasic_base = (void *)KN03_IOASIC_BASE; - dec_rtc_base = (void *)KN03_RTC_BASE; + dec_kn_slot_base = KN03_SLOT_BASE; dec_kn_slot_size = IOASIC_SLOT_SIZE; + + ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL); + dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY); } diff --git a/arch/mips/dec/prom/init.c b/arch/mips/dec/prom/init.c index 60f74256e689..32a7cc7e4c65 100644 --- a/arch/mips/dec/prom/init.c +++ b/arch/mips/dec/prom/init.c @@ -6,6 +6,8 @@ */ #include <linux/config.h> #include <linux/init.h> +#include <linux/kernel.h> +#include <linux/linkage.h> #include <linux/smp.h> #include <linux/string.h> #include <linux/types.h> @@ -85,17 +87,13 @@ void __init which_prom(s32 magic, s32 *prom_vec) void __init prom_init(void) { - extern void dec_machine_halt(void); + extern void ATTRIB_NORET 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; + s32 *argv = (void *)fw_arg1; u32 magic = fw_arg2; - s32 prom_vec = fw_arg3; + s32 *prom_vec = (void *)fw_arg3; /* * Determine which PROM we have @@ -113,6 +111,8 @@ void __init prom_init(void) #if defined(CONFIG_CPU_R3000) if ((current_cpu_data.cputype == CPU_R4000SC) || (current_cpu_data.cputype == CPU_R4400SC)) { + static char r4k_msg[] __initdata = + "Please recompile with \"CONFIG_CPU_R4x00 = y\".\n"; printk(cpu_msg); printk(r4k_msg); dec_machine_halt(); @@ -122,6 +122,8 @@ void __init prom_init(void) #if defined(CONFIG_CPU_R4X00) if ((current_cpu_data.cputype == CPU_R3000) || (current_cpu_data.cputype == CPU_R3000A)) { + static char r3k_msg[] __initdata = + "Please recompile with \"CONFIG_CPU_R3000 = y\".\n"; printk(cpu_msg); printk(r3k_msg); dec_machine_halt(); diff --git a/arch/mips/dec/prom/memory.c b/arch/mips/dec/prom/memory.c index e4f6f26425ea..83d4556c3cb5 100644 --- a/arch/mips/dec/prom/memory.c +++ b/arch/mips/dec/prom/memory.c @@ -35,22 +35,22 @@ static inline void pmax_setup_memory_region(void) extern char genexcept_early; /* Install exception handler */ - memcpy(&old_handler, (void *)(KSEG0 + 0x80), 0x80); - memcpy((void *)(KSEG0 + 0x80), &genexcept_early, 0x80); + memcpy(&old_handler, (void *)(CKSEG0 + 0x80), 0x80); + memcpy((void *)(CKSEG0 + 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)); + for (memory_page = (unsigned char *)CKSEG1 + CHUNK_SIZE; + mem_err == 0 && memory_page < (unsigned char *)CKSEG1 + 0x1e00000; memory_page += CHUNK_SIZE) { dummy = *memory_page; } - memcpy((void *)(KSEG0 + 0x80), &old_handler, 0x80); + memcpy((void *)(CKSEG0 + 0x80), &old_handler, 0x80); - add_memory_region(0, (unsigned long)memory_page - KSEG1 - CHUNK_SIZE, + add_memory_region(0, (unsigned long)memory_page - CKSEG1 - CHUNK_SIZE, BOOT_MEM_RAM); } @@ -65,7 +65,7 @@ static inline void rex_setup_memory_region(void) memmap *bm; /* some free 64k */ - bm = (memmap *)KSEG0ADDR(0x28000); + bm = (memmap *)CKSEG0ADDR(0x28000); bitmap_size = rex_getbitmap(bm); diff --git a/arch/mips/dec/reset.c b/arch/mips/dec/reset.c index 7e4d34d0573d..f78c6da47921 100644 --- a/arch/mips/dec/reset.c +++ b/arch/mips/dec/reset.c @@ -14,7 +14,7 @@ typedef void ATTRIB_NORET (* noret_func_t)(void); static inline void ATTRIB_NORET back_to_prom(void) { - noret_func_t func = (void *) KSEG1ADDR(0x1fc00000); + noret_func_t func = (void *)CKSEG1ADDR(0x1fc00000); func(); } diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c index 6a69309baf40..9ef54fe1feaa 100644 --- a/arch/mips/dec/setup.c +++ b/arch/mips/dec/setup.c @@ -1,19 +1,20 @@ /* - * Setup the interrupt stuff. + * 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 Maciej W. Rozycki + * Copyright (C) 2000, 2001, 2002, 2003, 2005 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/interrupt.h> +#include <linux/ioport.h> #include <linux/module.h> +#include <linux/param.h> +#include <linux/sched.h> #include <linux/spinlock.h> #include <linux/types.h> @@ -38,6 +39,7 @@ #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); @@ -47,10 +49,16 @@ extern irqreturn_t dec_intr_halt(int irq, void *dev_id, struct pt_regs *regs); extern asmlinkage void decstation_handle_int(void); +unsigned long dec_kn_slot_base, dec_kn_slot_size; + +EXPORT_SYMBOL(dec_kn_slot_base); +EXPORT_SYMBOL(dec_kn_slot_size); + spinlock_t ioasic_ssr_lock; volatile u32 *ioasic_base; -unsigned long dec_kn_slot_size; + +EXPORT_SYMBOL(ioasic_base); /* * IRQ routing and priority tables. Priorites are set as follows: @@ -77,6 +85,9 @@ unsigned long dec_kn_slot_size; 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 } }, }; @@ -108,11 +119,20 @@ static struct irqaction haltirq = { /* * Bus error (DBE/IBE exceptions and bus interrupts) handling setup. */ -void __init dec_be_init(void) +static void __init dec_be_init(void) { switch (mips_machtype) { case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */ + board_be_handler = dec_kn01_be_handler; + busirq.handler = dec_kn01_be_interrupt; busirq.flags |= SA_SHIRQ; + dec_kn01_be_init(); + break; + case MACH_DS5000_1XX: /* DS5000/1xx 3min */ + case MACH_DS5000_XX: /* DS5000/xx Maxine */ + board_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+ */ @@ -128,7 +148,7 @@ void __init dec_be_init(void) extern void dec_time_init(void); extern void dec_timer_setup(struct irqaction *); -static void __init decstation_setup(void) +void __init plat_setup(void) { board_be_init = dec_be_init; board_time_init = dec_time_init; @@ -139,9 +159,10 @@ static void __init decstation_setup(void) _machine_restart = dec_machine_restart; _machine_halt = dec_machine_halt; _machine_power_off = dec_machine_power_off; -} -early_initcall(decstation_setup); + ioport_resource.start = ~0UL; + ioport_resource.end = 0UL; +} /* * Machine-specific initialisation for KN01, aka DS2100 (aka Pmin) @@ -206,7 +227,7 @@ static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = { { .p = cpu_all_int } }, }; -void __init dec_init_kn01(void) +static void __init dec_init_kn01(void) { /* IRQ routing. */ memcpy(&dec_interrupt, &kn01_interrupt, @@ -281,7 +302,7 @@ static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = { { .p = cpu_all_int } }, }; -void __init dec_init_kn230(void) +static void __init dec_init_kn230(void) { /* IRQ routing. */ memcpy(&dec_interrupt, &kn230_interrupt, @@ -371,7 +392,7 @@ static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = { { .p = kn02_all_int } }, }; -void __init dec_init_kn02(void) +static void __init dec_init_kn02(void) { /* IRQ routing. */ memcpy(&dec_interrupt, &kn02_interrupt, @@ -472,7 +493,7 @@ static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = { { .p = asic_all_int } }, }; -void __init dec_init_kn02ba(void) +static void __init dec_init_kn02ba(void) { /* IRQ routing. */ memcpy(&dec_interrupt, &kn02ba_interrupt, @@ -569,7 +590,7 @@ static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = { { .p = asic_all_int } }, }; -void __init dec_init_kn02ca(void) +static void __init dec_init_kn02ca(void) { /* IRQ routing. */ memcpy(&dec_interrupt, &kn02ca_interrupt, @@ -670,7 +691,7 @@ static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = { { .p = asic_all_int } }, }; -void __init dec_init_kn03(void) +static void __init dec_init_kn03(void) { /* IRQ routing. */ memcpy(&dec_interrupt, &kn03_interrupt, @@ -744,7 +765,3 @@ void __init arch_init_irq(void) 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); |