diff options
Diffstat (limited to 'arch/mips/pmc-sierra/yosemite')
| -rw-r--r-- | arch/mips/pmc-sierra/yosemite/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/pmc-sierra/yosemite/irq-handler.S | 93 | ||||
| -rw-r--r-- | arch/mips/pmc-sierra/yosemite/irq.c | 33 |
3 files changed, 32 insertions, 96 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/Makefile b/arch/mips/pmc-sierra/yosemite/Makefile index ae96a71a308..e931e0d4422 100644 --- a/arch/mips/pmc-sierra/yosemite/Makefile +++ b/arch/mips/pmc-sierra/yosemite/Makefile @@ -2,7 +2,7 @@ # Makefile for the PMC-Sierra Titan # -obj-y += irq-handler.o irq.o i2c-yosemite.o prom.o py-console.o setup.o +obj-y += irq.o i2c-yosemite.o prom.o py-console.o setup.o obj-$(CONFIG_KGDB) += dbg_io.o obj-$(CONFIG_SMP) += smp.o diff --git a/arch/mips/pmc-sierra/yosemite/irq-handler.S b/arch/mips/pmc-sierra/yosemite/irq-handler.S deleted file mode 100644 index 33b9c40d4f5..00000000000 --- a/arch/mips/pmc-sierra/yosemite/irq-handler.S +++ /dev/null @@ -1,93 +0,0 @@ -/* - * Copyright 2003, 04 PMC-Sierra Inc. - * Author: Manish Lachwani (lachwani@pmc-sierra.com - * Copyright 2004 Ralf Baechle (ralf@linux-mips.org) - * - * First-level interrupt router for the PMC-Sierra Titan board - * - * 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. - * - * Titan supports Hypertransport or PCI but not both. Hence, one interrupt - * line is shared between the PCI slot A and Hypertransport. This is the - * Processor INTB #0. - */ - -#include <linux/config.h> -#include <asm/asm.h> -#include <asm/mipsregs.h> -#include <asm/addrspace.h> -#include <asm/regdef.h> -#include <asm/stackframe.h> - - .align 5 - NESTED(titan_handle_int, PT_SIZE, sp) - SAVE_ALL - CLI - .set at - .set noreorder - la ra, ret_from_irq - mfc0 t0, CP0_CAUSE - mfc0 t2, CP0_STATUS - - and t0, t2 - - andi t2, t0, STATUSF_IP7 /* INTB5 hardware line */ - bnez t2, ll_timer_irq /* Timer */ - andi t1, t0, STATUSF_IP2 /* INTB0 hardware line */ - bnez t1, ll_pcia_irq /* 64-bit PCI */ - andi t2, t0, STATUSF_IP3 /* INTB1 hardware line */ - bnez t2, ll_pcib_irq /* second 64-bit PCI slot */ - andi t1, t0, STATUSF_IP4 /* INTB2 hardware line */ - bnez t1, ll_duart_irq /* UART */ - andi t2, t0, STATUSF_IP5 /* SMP inter-core interrupts */ - bnez t2, ll_smp_irq - andi t1, t0, STATUSF_IP6 - bnez t1, ll_ht_irq /* Hypertransport */ - - move a0, sp - j do_extended_irq - END(titan_handle_int) - - .set reorder - .align 5 - -ll_pcia_irq: - li a0, 2 - move a1, sp -#ifdef CONFIG_HYPERTRANSPORT - j ll_ht_smp_irq_handler -#else - j do_IRQ -#endif - -ll_pcib_irq: - li a0, 3 - move a1, sp - j do_IRQ - -ll_duart_irq: - li a0, 4 - move a1, sp - j do_IRQ - -ll_smp_irq: - li a0, 5 - move a1, sp -#ifdef CONFIG_SMP - j titan_mailbox_irq -#else - j do_IRQ -#endif - -ll_ht_irq: - li a0, 6 - move a1, sp - j ll_ht_smp_irq_handler - -ll_timer_irq: - li a0, 7 - move a1, sp - j do_IRQ diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c index f4e2897d9bf..a1f524fc4c1 100644 --- a/arch/mips/pmc-sierra/yosemite/irq.c +++ b/arch/mips/pmc-sierra/yosemite/irq.c @@ -2,6 +2,8 @@ * Copyright (C) 2003 PMC-Sierra Inc. * Author: Manish Lachwani (lachwani@pmc-sierra.com) * + * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org) + * * 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 @@ -55,7 +57,6 @@ #define HYPERTRANSPORT_INTC 0x7a /* INTC# */ #define HYPERTRANSPORT_INTD 0x7b /* INTD# */ -extern asmlinkage void titan_handle_int(void); extern void jaguar_mailbox_irq(struct pt_regs *); /* @@ -125,6 +126,35 @@ asmlinkage void do_extended_irq(struct pt_regs *regs) } +asmlinkage void plat_irq_dispatch(struct pt_regs *regs) +{ + unsigned int cause = read_c0_cause(); + unsigned int status = read_c0_status(); + unsigned int pending = cause & status; + + if (pending & STATUSF_IP7) { + do_IRQ(7, regs); + } else if (pending & STATUSF_IP2) { +#ifdef CONFIG_HYPERTRANSPORT + ll_ht_smp_irq_handler(2, regs); +#else + do_IRQ(2, regs); +#endif + } else if (pending & STATUSF_IP3) { + do_IRQ(3, regs); + } else if (pending & STATUSF_IP4) { + do_IRQ(4, regs); + } else if (pending & STATUSF_IP5) { +#ifdef CONFIG_SMP + titan_mailbox_irq(regs); +#else + do_IRQ(5, regs); +#endif + } else if (pending & STATUSF_IP6) { + do_IRQ(4, regs); + } +} + #ifdef CONFIG_KGDB extern void init_second_port(void); #endif @@ -136,7 +166,6 @@ void __init arch_init_irq(void) { clear_c0_status(ST0_IM); - set_except_vector(0, titan_handle_int); mips_cpu_irq_init(0); rm7k_cpu_irq_init(8); rm9k_cpu_irq_init(12); |