diff options
| -rw-r--r-- | arch/mips/Kconfig | 4 | ||||
| -rw-r--r-- | arch/mips/cobalt/irq.c | 118 | ||||
| -rw-r--r-- | arch/mips/cobalt/rtc.c | 5 | ||||
| -rw-r--r-- | arch/mips/cobalt/serial.c | 7 | ||||
| -rw-r--r-- | arch/mips/cobalt/setup.c | 9 | ||||
| -rw-r--r-- | arch/mips/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/irq-gt641xx.c | 131 | ||||
| -rw-r--r-- | arch/mips/pci/fixup-cobalt.c | 23 | ||||
| -rw-r--r-- | include/asm-mips/irq_gt641xx.h | 60 | ||||
| -rw-r--r-- | include/asm-mips/mach-cobalt/cobalt.h | 26 | ||||
| -rw-r--r-- | include/asm-mips/mach-cobalt/irq.h | 58 |
11 files changed, 307 insertions, 135 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ebc7b4b..90b409d 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -64,6 +64,7 @@ config MIPS_COBALT select HW_HAS_PCI select I8259 select IRQ_CPU + select IRQ_GT641XX select PCI_GT64XXX_PCI0 select SYS_HAS_CPU_NEVADA select SYS_HAS_EARLY_PRINTK @@ -806,6 +807,9 @@ config IRQ_MSP_CIC config IRQ_TXX9 bool +config IRQ_GT641XX + bool + config MIPS_BOARDS_GEN bool diff --git a/arch/mips/cobalt/irq.c b/arch/mips/cobalt/irq.c index 48763cd..ac4fb91 100644 --- a/arch/mips/cobalt/irq.c +++ b/arch/mips/cobalt/irq.c @@ -15,104 +15,48 @@ #include <asm/i8259.h> #include <asm/irq_cpu.h> +#include <asm/irq_gt641xx.h> #include <asm/gt64120.h> -#include <cobalt.h> - -/* - * We have two types of interrupts that we handle, ones that come in through - * the CPU interrupt lines, and ones that come in on the via chip. The CPU - * mappings are: - * - * 16 - Software interrupt 0 (unused) IE_SW0 - * 17 - Software interrupt 1 (unused) IE_SW1 - * 18 - Galileo chip (timer) IE_IRQ0 - * 19 - Tulip 0 + NCR SCSI IE_IRQ1 - * 20 - Tulip 1 IE_IRQ2 - * 21 - 16550 UART IE_IRQ3 - * 22 - VIA southbridge PIC IE_IRQ4 - * 23 - unused IE_IRQ5 - * - * The VIA chip is a master/slave 8259 setup and has the following interrupts: - * - * 8 - RTC - * 9 - PCI - * 14 - IDE0 - * 15 - IDE1 - */ - -static inline void galileo_irq(void) -{ - unsigned int mask, pending, devfn; - - mask = GT_READ(GT_INTRMASK_OFS); - pending = GT_READ(GT_INTRCAUSE_OFS) & mask; - - if (pending & GT_INTR_T0EXP_MSK) { - GT_WRITE(GT_INTRCAUSE_OFS, ~GT_INTR_T0EXP_MSK); - do_IRQ(COBALT_GALILEO_IRQ); - } else if (pending & GT_INTR_RETRYCTR0_MSK) { - devfn = GT_READ(GT_PCI0_CFGADDR_OFS) >> 8; - GT_WRITE(GT_INTRCAUSE_OFS, ~GT_INTR_RETRYCTR0_MSK); - printk(KERN_WARNING - "Galileo: PCI retry count exceeded (%02x.%u)\n", - PCI_SLOT(devfn), PCI_FUNC(devfn)); - } else { - GT_WRITE(GT_INTRMASK_OFS, mask & ~pending); - printk(KERN_WARNING - "Galileo: masking unexpected interrupt %08x\n", pending); - } -} - -static inline void via_pic_irq(void) -{ - int irq; - - irq = i8259_irq(); - if (irq >= 0) - do_IRQ(irq); -} +#include <irq.h> asmlinkage void plat_irq_dispatch(void) { - unsigned pending = read_c0_status() & read_c0_cause(); + unsigned pending = read_c0_status() & read_c0_cause() & ST0_IM; + int irq; - if (pending & CAUSEF_IP2) /* COBALT_GALILEO_IRQ (18) */ - galileo_irq(); - else if (pending & CAUSEF_IP6) /* COBALT_VIA_IRQ (22) */ - via_pic_irq(); - else if (pending & CAUSEF_IP3) /* COBALT_ETH0_IRQ (19) */ - do_IRQ(COBALT_CPU_IRQ + 3); - else if (pending & CAUSEF_IP4) /* COBALT_ETH1_IRQ (20) */ - do_IRQ(COBALT_CPU_IRQ + 4); - else if (pending & CAUSEF_IP5) /* COBALT_SERIAL_IRQ (21) */ - do_IRQ(COBALT_CPU_IRQ + 5); - else if (pending & CAUSEF_IP7) /* IRQ 23 */ - do_IRQ(COBALT_CPU_IRQ + 7); + if (pending & CAUSEF_IP2) + gt641xx_irq_dispatch(); + else if (pending & CAUSEF_IP6) { + irq = i8259_irq(); + if (irq < 0) + spurious_interrupt(); + else + do_IRQ(irq); + } else if (pending & CAUSEF_IP3) + do_IRQ(MIPS_CPU_IRQ_BASE + 3); + else if (pending & CAUSEF_IP4) + do_IRQ(MIPS_CPU_IRQ_BASE + 4); + else if (pending & CAUSEF_IP5) + do_IRQ(MIPS_CPU_IRQ_BASE + 5); + else if (pending & CAUSEF_IP7) + do_IRQ(MIPS_CPU_IRQ_BASE + 7); + else + spurious_interrupt(); } -static struct irqaction irq_via = { - .handler = no_action, - .mask = CPU_MASK_NONE, - .name = "cascade" +static struct irqaction cascade = { + .handler = no_action, + .mask = CPU_MASK_NONE, + .name = "cascade", }; void __init arch_init_irq(void) { - /* - * Mask all Galileo interrupts. The Galileo - * handler is set in cobalt_timer_setup() - */ - GT_WRITE(GT_INTRMASK_OFS, 0); - - init_i8259_irqs(); /* 0 ... 15 */ - mips_cpu_irq_init(); /* 16 ... 23 */ - - /* - * Mask all cpu interrupts - * (except IE4, we already masked those at VIA level) - */ - change_c0_status(ST0_IM, IE_IRQ4); + mips_cpu_irq_init(); + gt641xx_irq_init(); + init_i8259_irqs(); - setup_irq(COBALT_VIA_IRQ, &irq_via); + setup_irq(GT641XX_CASCADE_IRQ, &cascade); + setup_irq(I8259_CASCADE_IRQ, &cascade); } diff --git a/arch/mips/cobalt/rtc.c b/arch/mips/cobalt/rtc.c index 284daef..e70794b 100644 --- a/arch/mips/cobalt/rtc.c +++ b/arch/mips/cobalt/rtc.c @@ -20,6 +20,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/ioport.h> +#include <linux/mc146818rtc.h> #include <linux/platform_device.h> static struct resource cobalt_rtc_resource[] __initdata = { @@ -29,8 +30,8 @@ static struct resource cobalt_rtc_resource[] __initdata = { .flags = IORESOURCE_IO, }, { - .start = 8, - .end = 8, + .start = RTC_IRQ, + .end = RTC_IRQ, .flags = IORESOURCE_IRQ, }, }; diff --git a/arch/mips/cobalt/serial.c b/arch/mips/cobalt/serial.c index 08e7397..53b8d0d 100644 --- a/arch/mips/cobalt/serial.c +++ b/arch/mips/cobalt/serial.c @@ -24,6 +24,7 @@ #include <linux/serial_8250.h> #include <cobalt.h> +#include <irq.h> static struct resource cobalt_uart_resource[] __initdata = { { @@ -32,15 +33,15 @@ static struct resource cobalt_uart_resource[] __initdata = { .flags = IORESOURCE_MEM, }, { - .start = COBALT_SERIAL_IRQ, - .end = COBALT_SERIAL_IRQ, + .start = SERIAL_IRQ, + .end = SERIAL_IRQ, .flags = IORESOURCE_IRQ, }, }; static struct plat_serial8250_port cobalt_serial8250_port[] = { { - .irq = COBALT_SERIAL_IRQ, + .irq = SERIAL_IRQ, .uartclk = 18432000, .iotype = UPIO_MEM, .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c index 7abe45e..fc9cbb2 100644 --- a/arch/mips/cobalt/setup.c +++ b/arch/mips/cobalt/setup.c @@ -20,6 +20,7 @@ #include <asm/gt64120.h> #include <cobalt.h> +#include <irq.h> extern void cobalt_machine_restart(char *command); extern void cobalt_machine_halt(void); @@ -45,14 +46,10 @@ void __init plat_timer_setup(struct irqaction *irq) /* Load timer value for HZ (TCLK is 50MHz) */ GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ); - /* Enable timer */ + /* Enable timer0 */ GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK); - /* Register interrupt */ - setup_irq(COBALT_GALILEO_IRQ, irq); - - /* Enable interrupt */ - GT_WRITE(GT_INTRMASK_OFS, GT_INTR_T0EXP_MSK | GT_READ(GT_INTRMASK_OFS)); + setup_irq(GT641XX_TIMER0_IRQ, irq); } /* diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 2fd96d95..7851b4b 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -51,6 +51,7 @@ obj-$(CONFIG_IRQ_CPU_RM7K) += irq-rm7000.o obj-$(CONFIG_IRQ_CPU_RM9K) += irq-rm9000.o obj-$(CONFIG_MIPS_BOARDS_GEN) += irq-msc01.o obj-$(CONFIG_IRQ_TXX9) += irq_txx9.o +obj-$(CONFIG_IRQ_GT641XX) += irq-gt641xx.o obj-$(CONFIG_32BIT) += scall32-o32.o obj-$(CONFIG_64BIT) += scall64-64.o diff --git a/arch/mips/kernel/irq-gt641xx.c b/arch/mips/kernel/irq-gt641xx.c new file mode 100644 index 0000000..1b81b13 --- /dev/null +++ b/arch/mips/kernel/irq-gt641xx.c @@ -0,0 +1,131 @@ +/* + * GT641xx IRQ routines. + * + * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/hardirq.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/spinlock.h> +#include <linux/types.h> + +#include <asm/gt64120.h> + +#define GT641XX_IRQ_TO_BIT(irq) (1U << (irq - GT641XX_IRQ_BASE)) + +static DEFINE_SPINLOCK(gt641xx_irq_lock); + +static void ack_gt641xx_irq(unsigned int irq) +{ + unsigned long flags; + u32 cause; + + spin_lock_irqsave(>641xx_irq_lock, flags); + cause = GT_READ(GT_INTRCAUSE_OFS); + cause &= ~GT641XX_IRQ_TO_BIT(irq); + GT_WRITE(GT_INTRCAUSE_OFS, cause); + spin_unlock_irqrestore(>641xx_irq_lock, flags); +} + +static void mask_gt641xx_irq(unsigned int irq) +{ + unsigned long flags; + u32 mask; + + spin_lock_irqsave(>641xx_irq_lock, flags); + mask = GT_READ(GT_INTRMASK_OFS); + mask &= ~GT641XX_IRQ_TO_BIT(irq); + GT_WRITE(GT_INTRMASK_OFS, mask); + spin_unlock_irqrestore(>641xx_irq_lock, flags); +} + +static void mask_ack_gt641xx_irq(unsigned int irq) +{ + unsigned long flags; + u32 cause, mask; + + spin_lock_irqsave(>641xx_irq_lock, flags); + mask = GT_READ(GT_INTRMASK_OFS); + mask &= ~GT641XX_IRQ_TO_BIT(irq); + GT_WRITE(GT_INTRMASK_OFS, mask); + + cause = GT_READ(GT_INTRCAUSE_OFS); + cause &= ~GT641XX_IRQ_TO_BIT(irq); + GT_WRITE(GT_INTRCAUSE_OFS, cause); + spin_unlock_irqrestore(>641xx_irq_lock, flags); +} + +static void unmask_gt641xx_irq(unsigned int irq) +{ + unsigned long flags; + u32 mask; + + spin_lock_irqsave(>641xx_irq_lock, flags); + mask = GT_READ(GT_INTRMASK_OFS); + mask |= GT641XX_IRQ_TO_BIT(irq); + GT_WRITE(GT_INTRMASK_OFS, mask); + spin_unlock_irqrestore(>641xx_irq_lock, flags); +} + +static struct irq_chip gt641xx_irq_chip = { + .name = "GT641xx", + .ack = ack_gt641xx_irq, + .mask = mask_gt641xx_irq, + .mask_ack = mask_ack_gt641xx_irq, + .unmask = unmask_gt641xx_irq, +}; + +void gt641xx_irq_dispatch(void) +{ + u32 cause, mask; + int i; + + cause = GT_READ(GT_INTRCAUSE_OFS); + mask = GT_READ(GT_INTRMASK_OFS); + cause &= mask; + + /* + * bit0 : logical or of all the interrupt bits. + * bit30: logical or of bits[29:26,20:1]. + * bit31: logical or of bits[25:1]. + */ + for (i = 1; i < 30; i++) { + if (cause & (1U << i)) { + do_IRQ(GT641XX_IRQ_BASE + i); + return; + } + } + + atomic_inc(&irq_err_count); +} + +void __init gt641xx_irq_init(void) +{ + int i; + + GT_WRITE(GT_INTRMASK_OFS, 0); + GT_WRITE(GT_INTRCAUSE_OFS, 0); + + /* + * bit0 : logical or of all the interrupt bits. + * bit30: logical or of bits[29:26,20:1]. + * bit31: logical or of bits[25:1]. + */ + for (i = 1; i < 30; i++) + set_irq_chip_and_handler(GT641XX_IRQ_BASE + i, + >641xx_irq_chip, handle_level_irq); +} diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c index 76b4f0f..4eb5410 100644 --- a/arch/mips/pci/fixup-cobalt.c +++ b/arch/mips/pci/fixup-cobalt.c @@ -18,6 +18,7 @@ #include <asm/gt64120.h> #include <cobalt.h> +#include <irq.h> static void qube_raq_galileo_early_fixup(struct pci_dev *dev) { @@ -132,29 +133,29 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, static char irq_tab_qube1[] __initdata = { [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = COBALT_QUBE1_ETH0_IRQ, - [COBALT_PCICONF_RAQSCSI] = COBALT_SCSI_IRQ, + [COBALT_PCICONF_ETH0] = QUBE1_ETH0_IRQ, + [COBALT_PCICONF_RAQSCSI] = SCSI_IRQ, [COBALT_PCICONF_VIA] = 0, - [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ, + [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, [COBALT_PCICONF_ETH1] = 0 }; static char irq_tab_cobalt[] __initdata = { [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = COBALT_ETH0_IRQ, - [COBALT_PCICONF_RAQSCSI] = COBALT_SCSI_IRQ, + [COBALT_PCICONF_ETH0] = ETH0_IRQ, + [COBALT_PCICONF_RAQSCSI] = SCSI_IRQ, [COBALT_PCICONF_VIA] = 0, - [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ, - [COBALT_PCICONF_ETH1] = COBALT_ETH1_IRQ + [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, + [COBALT_PCICONF_ETH1] = ETH1_IRQ }; static char irq_tab_raq2[] __initdata = { [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = COBALT_ETH0_IRQ, - [COBALT_PCICONF_RAQSCSI] = COBALT_RAQ_SCSI_IRQ, + [COBALT_PCICONF_ETH0] = ETH0_IRQ, + [COBALT_PCICONF_RAQSCSI] = RAQ2_SCSI_IRQ, [COBALT_PCICONF_VIA] = 0, - [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ, - [COBALT_PCICONF_ETH1] = COBALT_ETH1_IRQ + [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, + [COBALT_PCICONF_ETH1] = ETH1_IRQ }; int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) diff --git a/include/asm-mips/irq_gt641xx.h b/include/asm-mips/irq_gt641xx.h new file mode 100644 index 0000000..f9a7c3a --- /dev/null +++ b/include/asm-mips/irq_gt641xx.h @@ -0,0 +1,60 @@ +/* + * Galileo/Marvell GT641xx IRQ definitions. + * + * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef _ASM_IRQ_GT641XX_H +#define _ASM_IRQ_GT641XX_H + +#ifndef GT641XX_IRQ_BASE +#define GT641XX_IRQ_BASE 8 +#endif + +#define GT641XX_MEMORY_OUT_OF_RANGE_IRQ (GT641XX_IRQ_BASE + 1) +#define GT641XX_DMA_OUT_OF_RANGE_IRQ (GT641XX_IRQ_BASE + 2) +#define GT641XX_CPU_ACCESS_OUT_OF_RANGE_IRQ (GT641XX_IRQ_BASE + 3) +#define GT641XX_DMA0_IRQ (GT641XX_IRQ_BASE + 4) +#define GT641XX_DMA1_IRQ (GT641XX_IRQ_BASE + 5) +#define GT641XX_DMA2_IRQ (GT641XX_IRQ_BASE + 6) +#define GT641XX_DMA3_IRQ (GT641XX_IRQ_BASE + 7) +#define GT641XX_TIMER0_IRQ (GT641XX_IRQ_BASE + 8) +#define GT641XX_TIMER1_IRQ (GT641XX_IRQ_BASE + 9) +#define GT641XX_TIMER2_IRQ (GT641XX_IRQ_BASE + 10) +#define GT641XX_TIMER3_IRQ (GT641XX_IRQ_BASE + 11) +#define GT641XX_PCI_0_MASTER_READ_ERROR_IRQ (GT641XX_IRQ_BASE + 12) +#define GT641XX_PCI_0_SLAVE_WRITE_ERROR_IRQ (GT641XX_IRQ_BASE + 13) +#define GT641XX_PCI_0_MASTER_WRITE_ERROR_IRQ (GT641XX_IRQ_BASE + 14) +#define GT641XX_PCI_0_SLAVE_READ_ERROR_IRQ (GT641XX_IRQ_BASE + 15) +#define GT641XX_PCI_0_ADDRESS_ERROR_IRQ (GT641XX_IRQ_BASE + 16) +#define GT641XX_MEMORY_ERROR_IRQ (GT641XX_IRQ_BASE + 17) +#define GT641XX_PCI_0_MASTER_ABORT_IRQ (GT641XX_IRQ_BASE + 18) +#define GT641XX_PCI_0_TARGET_ABORT_IRQ (GT641XX_IRQ_BASE + 19) +#define GT641XX_PCI_0_RETRY_TIMEOUT_IRQ (GT641XX_IRQ_BASE + 20) +#define GT641XX_CPU_INT0_IRQ (GT641XX_IRQ_BASE + 21) +#define GT641XX_CPU_INT1_IRQ (GT641XX_IRQ_BASE + 22) +#define GT641XX_CPU_INT2_IRQ (GT641XX_IRQ_BASE + 23) +#define GT641XX_CPU_INT3_IRQ (GT641XX_IRQ_BASE + 24) +#define GT641XX_CPU_INT4_IRQ (GT641XX_IRQ_BASE + 25) +#define GT641XX_PCI_INT0_IRQ (GT641XX_IRQ_BASE + 26) +#define GT641XX_PCI_INT1_IRQ (GT641XX_IRQ_BASE + 27) +#define GT641XX_PCI_INT2_IRQ (GT641XX_IRQ_BASE + 28) +#define GT641XX_PCI_INT3_IRQ (GT641XX_IRQ_BASE + 29) + +extern void gt641xx_irq_dispatch(void); +extern void gt641xx_irq_init(void); + +#endif /* _ASM_IRQ_GT641XX_H */ diff --git a/include/asm-mips/mach-cobalt/cobalt.h b/include/asm-mips/mach-cobalt/cobalt.h index 9c9d2b9..408eecc 100644 --- a/include/asm-mips/mach-cobalt/cobalt.h +++ b/include/asm-mips/mach-cobalt/cobalt.h @@ -12,32 +12,6 @@ #ifndef __ASM_COBALT_H #define __ASM_COBALT_H -#include <irq.h> - -/* - * i8259 legacy interrupts used on Cobalt: - * - * 8 - RTC - * 9 - PCI - * 14 - IDE0 - * 15 - IDE1 - */ -#define COBALT_QUBE_SLOT_IRQ 9 - -/* - * CPU IRQs are 16 ... 23 - */ -#define COBALT_CPU_IRQ MIPS_CPU_IRQ_BASE - -#define COBALT_GALILEO_IRQ (COBALT_CPU_IRQ + 2) -#define COBALT_RAQ_SCSI_IRQ (COBALT_CPU_IRQ + 3) -#define COBALT_ETH0_IRQ (COBALT_CPU_IRQ + 3) -#define COBALT_QUBE1_ETH0_IRQ (COBALT_CPU_IRQ + 4) -#define COBALT_ETH1_IRQ (COBALT_CPU_IRQ + 4) -#define COBALT_SERIAL_IRQ (COBALT_CPU_IRQ + 5) -#define COBALT_SCSI_IRQ (COBALT_CPU_IRQ + 5) -#define COBALT_VIA_IRQ (COBALT_CPU_IRQ + 6) /* Chained to VIA ISA bridge */ - /* * PCI configuration space manifest constants. These are wired into * the board layout according to the PCI spec to enable the software diff --git a/include/asm-mips/mach-cobalt/irq.h b/include/asm-mips/mach-cobalt/irq.h new file mode 100644 index 0000000..179d0e8 --- /dev/null +++ b/include/asm-mips/mach-cobalt/irq.h @@ -0,0 +1,58 @@ +/* + * Cobalt IRQ definitions. + * + * 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) 1997 Cobalt Microserver + * Copyright (C) 1997, 2003 Ralf Baechle + * Copyright (C) 2001-2003 Liam Davies (ldavies@agile.tv) + * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + */ +#ifndef _ASM_COBALT_IRQ_H +#define _ASM_COBALT_IRQ_H + +/* + * i8259 interrupts used on Cobalt: + * + * 8 - RTC + * 9 - PCI slot + * 14 - IDE0 + * 15 - IDE1(no connector on board) + */ +#define I8259A_IRQ_BASE 0 + +#define PCISLOT_IRQ (I8259A_IRQ_BASE + 9) + +/* + * CPU interrupts used on Cobalt: + * + * 0 - Software interrupt 0 (unused) + * 1 - Software interrupt 0 (unused) + * 2 - cascade GT64111 + * 3 - ethernet or SCSI host controller + * 4 - ethernet + * 5 - 16550 UART + * 6 - cascade i8259 + * 7 - CP0 counter (unused) + */ +#define MIPS_CPU_IRQ_BASE 16 + +#define GT641XX_CASCADE_IRQ (MIPS_CPU_IRQ_BASE + 2) +#define RAQ2_SCSI_IRQ (MIPS_CPU_IRQ_BASE + 3) +#define ETH0_IRQ (MIPS_CPU_IRQ_BASE + 3) +#define QUBE1_ETH0_IRQ (MIPS_CPU_IRQ_BASE + 4) +#define ETH1_IRQ (MIPS_CPU_IRQ_BASE + 4) +#define SERIAL_IRQ (MIPS_CPU_IRQ_BASE + 5) +#define SCSI_IRQ (MIPS_CPU_IRQ_BASE + 5) +#define I8259_CASCADE_IRQ (MIPS_CPU_IRQ_BASE + 6) + + +#define GT641XX_IRQ_BASE 24 + +#include <asm/irq_gt641xx.h> + +#define NR_IRQS (GT641XX_PCI_INT3_IRQ + 1) + +#endif /* _ASM_COBALT_IRQ_H */ |
