diff options
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/Kconfig | 12 | ||||
| -rw-r--r-- | arch/frv/kernel/Makefile | 5 | ||||
| -rw-r--r-- | arch/frv/kernel/irq-mb93091.c | 157 | ||||
| -rw-r--r-- | arch/frv/kernel/irq-mb93093.c | 115 | ||||
| -rw-r--r-- | arch/frv/kernel/irq-mb93493.c | 160 | ||||
| -rw-r--r-- | arch/frv/kernel/irq-routing.c | 291 | ||||
| -rw-r--r-- | arch/frv/kernel/irq.c | 741 | ||||
| -rw-r--r-- | arch/frv/kernel/setup.c | 1 | ||||
| -rw-r--r-- | arch/frv/kernel/time.c | 1 | ||||
| -rw-r--r-- | arch/frv/mb93090-mb00/pci-irq.c | 1 | ||||
| -rw-r--r-- | arch/frv/mm/init.c | 2 |
11 files changed, 394 insertions, 1092 deletions
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index a601a17cf56..f7b171b92ea 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -27,7 +27,11 @@ config GENERIC_CALIBRATE_DELAY config GENERIC_HARDIRQS bool - default n + default y + +config GENERIC_HARDIRQS_NO__DO_IRQ + bool + default y config GENERIC_TIME bool @@ -251,6 +255,12 @@ config MB93091_NO_MB endchoice endif +config FUJITSU_MB93493 + bool "MB93493 Multimedia chip" + help + Select this option if the MB93493 multimedia chip is going to be + used. + choice prompt "GP-Relative data support" default GPREL_DATA_8 diff --git a/arch/frv/kernel/Makefile b/arch/frv/kernel/Makefile index 5a827b349b5..32db3499c46 100644 --- a/arch/frv/kernel/Makefile +++ b/arch/frv/kernel/Makefile @@ -10,15 +10,14 @@ extra-y:= head.o init_task.o vmlinux.lds obj-y := $(heads-y) entry.o entry-table.o break.o switch_to.o kernel_thread.o \ process.o traps.o ptrace.o signal.o dma.o \ sys_frv.o time.o semaphore.o setup.o frv_ksyms.o \ - debug-stub.o irq.o irq-routing.o sleep.o uaccess.o + debug-stub.o irq.o sleep.o uaccess.o obj-$(CONFIG_GDBSTUB) += gdb-stub.o gdb-io.o obj-$(CONFIG_MB93091_VDK) += irq-mb93091.o -obj-$(CONFIG_MB93093_PDK) += irq-mb93093.o -obj-$(CONFIG_FUJITSU_MB93493) += irq-mb93493.o obj-$(CONFIG_PM) += pm.o cmode.o obj-$(CONFIG_MB93093_PDK) += pm-mb93093.o +obj-$(CONFIG_FUJITSU_MB93493) += irq-mb93493.o obj-$(CONFIG_SYSCTL) += sysctl.o obj-$(CONFIG_FUTEX) += futex.o obj-$(CONFIG_MODULES) += module.o diff --git a/arch/frv/kernel/irq-mb93091.c b/arch/frv/kernel/irq-mb93091.c index 1381abcd5cc..369bc0a7443 100644 --- a/arch/frv/kernel/irq-mb93091.c +++ b/arch/frv/kernel/irq-mb93091.c @@ -24,7 +24,6 @@ #include <asm/delay.h> #include <asm/irq.h> #include <asm/irc-regs.h> -#include <asm/irq-routing.h> #define __reg16(ADDR) (*(volatile unsigned short *)(ADDR)) @@ -33,83 +32,131 @@ #define __get_IFR() ({ __reg16(0xffc0000c); }) #define __clr_IFR(M) do { __reg16(0xffc0000c) = ~(M); wmb(); } while(0) -static void frv_fpga_doirq(struct irq_source *source); -static void frv_fpga_control(struct irq_group *group, int irq, int on); -/*****************************************************************************/ /* - * FPGA IRQ multiplexor + * on-motherboard FPGA PIC operations */ -static struct irq_source frv_fpga[4] = { -#define __FPGA(X, M) \ - [X] = { \ - .muxname = "fpga."#X, \ - .irqmask = M, \ - .doirq = frv_fpga_doirq, \ - } +static void frv_fpga_mask(unsigned int irq) +{ + uint16_t imr = __get_IMR(); - __FPGA(0, 0x0028), - __FPGA(1, 0x0050), - __FPGA(2, 0x1c00), - __FPGA(3, 0x6386), -}; + imr |= 1 << (irq - IRQ_BASE_FPGA); -static struct irq_group frv_fpga_irqs = { - .first_irq = IRQ_BASE_FPGA, - .control = frv_fpga_control, - .sources = { - [ 1] = &frv_fpga[3], - [ 2] = &frv_fpga[3], - [ 3] = &frv_fpga[0], - [ 4] = &frv_fpga[1], - [ 5] = &frv_fpga[0], - [ 6] = &frv_fpga[1], - [ 7] = &frv_fpga[3], - [ 8] = &frv_fpga[3], - [ 9] = &frv_fpga[3], - [10] = &frv_fpga[2], - [11] = &frv_fpga[2], - [12] = &frv_fpga[2], - [13] = &frv_fpga[3], - [14] = &frv_fpga[3], - }, -}; + __set_IMR(imr); +} +static void frv_fpga_ack(unsigned int irq) +{ + __clr_IFR(1 << (irq - IRQ_BASE_FPGA)); +} -static void frv_fpga_control(struct irq_group *group, int index, int on) +static void frv_fpga_mask_ack(unsigned int irq) { uint16_t imr = __get_IMR(); - if (on) - imr &= ~(1 << index); - else - imr |= 1 << index; + imr |= 1 << (irq - IRQ_BASE_FPGA); + __set_IMR(imr); + + __clr_IFR(1 << (irq - IRQ_BASE_FPGA)); +} + +static void frv_fpga_unmask(unsigned int irq) +{ + uint16_t imr = __get_IMR(); + + imr &= ~(1 << (irq - IRQ_BASE_FPGA)); __set_IMR(imr); } -static void frv_fpga_doirq(struct irq_source *source) +static struct irq_chip frv_fpga_pic = { + .name = "mb93091", + .ack = frv_fpga_ack, + .mask = frv_fpga_mask, + .mask_ack = frv_fpga_mask_ack, + .unmask = frv_fpga_unmask, +}; + +/* + * FPGA PIC interrupt handler + */ +static irqreturn_t fpga_interrupt(int irq, void *_mask, struct pt_regs *regs) { - uint16_t mask, imr; + uint16_t imr, mask = (unsigned long) _mask; imr = __get_IMR(); - mask = source->irqmask & ~imr & __get_IFR(); - if (mask) { - __set_IMR(imr | mask); - __clr_IFR(mask); - distribute_irqs(&frv_fpga_irqs, mask); - __set_IMR(imr); + mask = mask & ~imr & __get_IFR(); + + /* poll all the triggered IRQs */ + while (mask) { + int irq; + + asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask)); + irq = 31 - irq; + mask &= ~(1 << irq); + + generic_handle_irq(IRQ_BASE_FPGA + irq, regs); } + + return IRQ_HANDLED; } +/* + * define an interrupt action for each FPGA PIC output + * - use dev_id to indicate the FPGA PIC input to output mappings + */ +static struct irqaction fpga_irq[4] = { + [0] = { + .handler = fpga_interrupt, + .flags = IRQF_DISABLED | IRQF_SHARED, + .mask = CPU_MASK_NONE, + .name = "fpga.0", + .dev_id = (void *) 0x0028UL, + }, + [1] = { + .handler = fpga_interrupt, + .flags = IRQF_DISABLED | IRQF_SHARED, + .mask = CPU_MASK_NONE, + .name = "fpga.1", + .dev_id = (void *) 0x0050UL, + }, + [2] = { + .handler = fpga_interrupt, + .flags = IRQF_DISABLED | IRQF_SHARED, + .mask = CPU_MASK_NONE, + .name = "fpga.2", + .dev_id = (void *) 0x1c00UL, + }, + [3] = { + .handler = fpga_interrupt, + .flags = IRQF_DISABLED | IRQF_SHARED, + .mask = CPU_MASK_NONE, + .name = "fpga.3", + .dev_id = (void *) 0x6386UL, + } +}; + +/* + * initialise the motherboard FPGA's PIC + */ void __init fpga_init(void) { + int irq; + + /* all PIC inputs are all set to be low-level driven, apart from the + * NMI button (15) which is fixed at falling-edge + */ __set_IMR(0x7ffe); __clr_IFR(0x0000); - frv_irq_route_external(&frv_fpga[0], IRQ_CPU_EXTERNAL0); - frv_irq_route_external(&frv_fpga[1], IRQ_CPU_EXTERNAL1); - frv_irq_route_external(&frv_fpga[2], IRQ_CPU_EXTERNAL2); - frv_irq_route_external(&frv_fpga[3], IRQ_CPU_EXTERNAL3); - frv_irq_set_group(&frv_fpga_irqs); + for (irq = IRQ_BASE_FPGA + 1; irq <= IRQ_BASE_FPGA + 14; irq++) + set_irq_chip_and_handler(irq, &frv_fpga_pic, handle_level_irq); + + set_irq_chip_and_handler(IRQ_FPGA_NMI, &frv_fpga_pic, handle_edge_irq); + + /* the FPGA drives the first four external IRQ inputs on the CPU PIC */ + setup_irq(IRQ_CPU_EXTERNAL0, &fpga_irq[0]); + setup_irq(IRQ_CPU_EXTERNAL1, &fpga_irq[1]); + setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[2]); + setup_irq(IRQ_CPU_EXTERNAL3, &fpga_irq[3]); } diff --git a/arch/frv/kernel/irq-mb93093.c b/arch/frv/kernel/irq-mb93093.c index 48b2a642088..a43a2215895 100644 --- a/arch/frv/kernel/irq-mb93093.c +++ b/arch/frv/kernel/irq-mb93093.c @@ -1,6 +1,6 @@ /* irq-mb93093.c: MB93093 FPGA interrupt handling * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or @@ -24,7 +24,6 @@ #include <asm/delay.h> #include <asm/irq.h> #include <asm/irc-regs.h> -#include <asm/irq-routing.h> #define __reg16(ADDR) (*(volatile unsigned short *)(__region_CS2 + (ADDR))) @@ -33,66 +32,102 @@ #define __get_IFR() ({ __reg16(0x02); }) #define __clr_IFR(M) do { __reg16(0x02) = ~(M); wmb(); } while(0) -static void frv_fpga_doirq(struct irq_source *source); -static void frv_fpga_control(struct irq_group *group, int irq, int on); - -/*****************************************************************************/ /* - * FPGA IRQ multiplexor + * off-CPU FPGA PIC operations */ -static struct irq_source frv_fpga[4] = { -#define __FPGA(X, M) \ - [X] = { \ - .muxname = "fpga."#X, \ - .irqmask = M, \ - .doirq = frv_fpga_doirq, \ - } +static void frv_fpga_mask(unsigned int irq) +{ + uint16_t imr = __get_IMR(); - __FPGA(0, 0x0700), -}; + imr |= 1 << (irq - IRQ_BASE_FPGA); + __set_IMR(imr); +} -static struct irq_group frv_fpga_irqs = { - .first_irq = IRQ_BASE_FPGA, - .control = frv_fpga_control, - .sources = { - [ 8] = &frv_fpga[0], - [ 9] = &frv_fpga[0], - [10] = &frv_fpga[0], - }, -}; +static void frv_fpga_ack(unsigned int irq) +{ + __clr_IFR(1 << (irq - IRQ_BASE_FPGA)); +} + +static void frv_fpga_mask_ack(unsigned int irq) +{ + uint16_t imr = __get_IMR(); + imr |= 1 << (irq - IRQ_BASE_FPGA); + __set_IMR(imr); + + __clr_IFR(1 << (irq - IRQ_BASE_FPGA)); +} -static void frv_fpga_control(struct irq_group *group, int index, int on) +static void frv_fpga_unmask(unsigned int irq) { uint16_t imr = __get_IMR(); - if (on) - imr &= ~(1 << index); - else - imr |= 1 << index; + imr &= ~(1 << (irq - IRQ_BASE_FPGA)); __set_IMR(imr); } -static void frv_fpga_doirq(struct irq_source *source) +static struct irq_chip frv_fpga_pic = { + .name = "mb93093", + .ack = frv_fpga_ack, + .mask = frv_fpga_mask, + .mask_ack = frv_fpga_mask_ack, + .unmask = frv_fpga_unmask, + .end = frv_fpga_end, +}; + +/* + * FPGA PIC interrupt handler + */ +static irqreturn_t fpga_interrupt(int irq, void *_mask, struct pt_regs *regs) { - uint16_t mask, imr; + uint16_t imr, mask = (unsigned long) _mask; imr = __get_IMR(); - mask = source->irqmask & ~imr & __get_IFR(); - if (mask) { - __set_IMR(imr | mask); - __clr_IFR(mask); - distribute_irqs(&frv_fpga_irqs, mask); - __set_IMR(imr); + mask = mask & ~imr & __get_IFR(); + + /* poll all the triggered IRQs */ + while (mask) { + int irq; + + asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask)); + irq = 31 - irq; + mask &= ~(1 << irq); + + generic_irq_handle(IRQ_BASE_FPGA + irq, regs); } + + return IRQ_HANDLED; } +/* + * define an interrupt action for each FPGA PIC output + * - use dev_id to indicate the FPGA PIC input to output mappings + */ +static struct irqaction fpga_irq[1] = { + [0] = { + .handler = fpga_interrupt, + .flags = IRQF_DISABLED, + .mask = CPU_MASK_NONE, + .name = "fpga.0", + .dev_id = (void *) 0x0700UL, + } +}; + +/* + * initialise the motherboard FPGA's PIC + */ void __init fpga_init(void) { + int irq; + + /* all PIC inputs are all set to be edge triggered */ __set_IMR(0x0700); __clr_IFR(0x0000); - frv_irq_route_external(&frv_fpga[0], IRQ_CPU_EXTERNAL2); - frv_irq_set_group(&frv_fpga_irqs); + for (irq = IRQ_BASE_FPGA + 8; irq <= IRQ_BASE_FPGA + 10; irq++) + set_irq_chip_and_handler(irq, &frv_fpga_pic, handle_edge_irq); + + /* the FPGA drives external IRQ input #2 on the CPU PIC */ + setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[0]); } diff --git a/arch/frv/kernel/irq-mb93493.c b/arch/frv/kernel/irq-mb93493.c index 988d035640e..39c0188a349 100644 --- a/arch/frv/kernel/irq-mb93493.c +++ b/arch/frv/kernel/irq-mb93493.c @@ -1,6 +1,6 @@ /* irq-mb93493.c: MB93493 companion chip interrupt handler * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or @@ -24,84 +24,126 @@ #include <asm/delay.h> #include <asm/irq.h> #include <asm/irc-regs.h> -#include <asm/irq-routing.h> #include <asm/mb93493-irqs.h> +#include <asm/mb93493-regs.h> -static void frv_mb93493_doirq(struct irq_source *source); +#define IRQ_ROUTE_ONE(X) (X##_ROUTE << (X - IRQ_BASE_MB93493)) + +#define IRQ_ROUTING \ + (IRQ_ROUTE_ONE(IRQ_MB93493_VDC) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_VCC) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_OUT) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_I2C_0) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_I2C_1) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_USB) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_LOCAL_BUS) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_PCMCIA) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_GPIO) | \ + IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_IN)) -/*****************************************************************************/ /* - * MB93493 companion chip IRQ multiplexor + * daughter board PIC operations + * - there is no way to ACK interrupts in the MB93493 chip */ -static struct irq_source frv_mb93493[2] = { - [0] = { - .muxname = "mb93493.0", - .muxdata = __region_CS3 + 0x3d0, - .doirq = frv_mb93493_doirq, - .irqmask = 0x0000, - }, - [1] = { - .muxname = "mb93493.1", - .muxdata = __region_CS3 + 0x3d4, - .doirq = frv_mb93493_doirq, - .irqmask = 0x0000, - }, -}; - -static void frv_mb93493_control(struct irq_group *group, int index, int on) +static void frv_mb93493_mask(unsigned int irq) { - struct irq_source *source; uint32_t iqsr; + volatile void *piqsr; - if ((frv_mb93493[0].irqmask & (1 << index))) - source = &frv_mb93493[0]; + if (IRQ_ROUTING & (1 << (irq - IRQ_BASE_MB93493))) + piqsr = __addr_MB93493_IQSR(1); else - source = &frv_mb93493[1]; + piqsr = __addr_MB93493_IQSR(0); + + iqsr = readl(piqsr); + iqsr &= ~(1 << (irq - IRQ_BASE_MB93493 + 16)); + writel(iqsr, piqsr); +} - iqsr = readl(source->muxdata); - if (on) - iqsr |= 1 << (index + 16); +static void frv_mb93493_ack(unsigned int irq) +{ +} + +static void frv_mb93493_unmask(unsigned int irq) +{ + uint32_t iqsr; + volatile void *piqsr; + + if (IRQ_ROUTING & (1 << (irq - IRQ_BASE_MB93493))) + piqsr = __addr_MB93493_IQSR(1); else - iqsr &= ~(1 << (index + 16)); + piqsr = __addr_MB93493_IQSR(0); - writel(iqsr, source->muxdata); + iqsr = readl(piqsr); + iqsr |= 1 << (irq - IRQ_BASE_MB93493 + 16); + writel(iqsr, piqsr); } -static struct irq_group frv_mb93493_irqs = { - .first_irq = IRQ_BASE_MB93493, - .control = frv_mb93493_control, +static struct irq_chip frv_mb93493_pic = { + .name = "mb93093", + .ack = frv_mb93493_ack, + .mask = frv_mb93493_mask, + .mask_ack = frv_mb93493_mask, + .unmask = frv_mb93493_unmask, }; -static void frv_mb93493_doirq(struct irq_source *source) +/* + * MB93493 PIC interrupt handler + */ +static irqreturn_t mb93493_interrupt(int irq, void *_piqsr, struct pt_regs *regs) { - uint32_t mask = readl(source->muxdata); - mask = mask & (mask >> 16) & 0xffff; + volatile void *piqsr = _piqsr; + uint32_t iqsr; - if (mask) - distribute_irqs(&frv_mb93493_irqs, mask); -} + iqsr = readl(piqsr); + iqsr = iqsr & (iqsr >> 16) & 0xffff; -static void __init mb93493_irq_route(int irq, int source) -{ - frv_mb93493[source].irqmask |= 1 << (irq - IRQ_BASE_MB93493); - frv_mb93493_irqs.sources[irq - IRQ_BASE_MB93493] = &frv_mb93493[source]; + /* poll all the triggered IRQs */ + while (iqsr) { + int irq; + + asm("scan %1,gr0,%0" : "=r"(irq) : "r"(iqsr)); + irq = 31 - irq; + iqsr &= ~(1 << irq); + + generic_handle_irq(IRQ_BASE_MB93493 + irq, regs); + } + + return IRQ_HANDLED; } -void __init route_mb93493_irqs(void) +/* + * define an interrupt action for each MB93493 PIC output + * - use dev_id to indicate the MB93493 PIC input to output mappings + */ +static struct irqaction mb93493_irq[2] = { + [0] = { + .handler = mb93493_interrupt, + .flags = IRQF_DISABLED | IRQF_SHARED, + .mask = CPU_MASK_NONE, + .name = "mb93493.0", + .dev_id = (void *) __addr_MB93493_IQSR(0), + }, + [1] = { + .handler = mb93493_interrupt, + .flags = IRQF_DISABLED | IRQF_SHARED, + .mask = CPU_MASK_NONE, + .name = "mb93493.1", + .dev_id = (void *) __addr_MB93493_IQSR(1), + } +}; + +/* + * initialise the motherboard MB93493's PIC + */ +void __init mb93493_init(void) { - frv_irq_route_external(&frv_mb93493[0], IRQ_CPU_MB93493_0); - frv_irq_route_external(&frv_mb93493[1], IRQ_CPU_MB93493_1); - - frv_irq_set_group(&frv_mb93493_irqs); - - mb93493_irq_route(IRQ_MB93493_VDC, IRQ_MB93493_VDC_ROUTE); - mb93493_irq_route(IRQ_MB93493_VCC, IRQ_MB93493_VCC_ROUTE); - mb93493_irq_route(IRQ_MB93493_AUDIO_IN, IRQ_MB93493_AUDIO_IN_ROUTE); - mb93493_irq_route(IRQ_MB93493_I2C_0, IRQ_MB93493_I2C_0_ROUTE); - mb93493_irq_route(IRQ_MB93493_I2C_1, IRQ_MB93493_I2C_1_ROUTE); - mb93493_irq_route(IRQ_MB93493_USB, IRQ_MB93493_USB_ROUTE); - mb93493_irq_route(IRQ_MB93493_LOCAL_BUS, IRQ_MB93493_LOCAL_BUS_ROUTE); - mb93493_irq_route(IRQ_MB93493_PCMCIA, IRQ_MB93493_PCMCIA_ROUTE); - mb93493_irq_route(IRQ_MB93493_GPIO, IRQ_MB93493_GPIO_ROUTE); - mb93493_irq_route(IRQ_MB93493_AUDIO_OUT, IRQ_MB93493_AUDIO_OUT_ROUTE); + int irq; + + for (irq = IRQ_BASE_MB93493 + 0; irq <= IRQ_BASE_MB93493 + 10; irq++) + set_irq_chip_and_handler(irq, &frv_mb93493_pic, handle_edge_irq); + + /* the MB93493 drives external IRQ inputs on the CPU PIC */ + setup_irq(IRQ_CPU_MB93493_0, &mb93493_irq[0]); + setup_irq(IRQ_CPU_MB93493_1, &mb93493_irq[1]); } diff --git a/arch/frv/kernel/irq-routing.c b/arch/frv/kernel/irq-routing.c deleted file mode 100644 index 53886adf47d..00000000000 --- a/arch/frv/kernel/irq-routing.c +++ /dev/null @@ -1,291 +0,0 @@ -/* irq-routing.c: IRQ routing - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * 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/sched.h> -#include <linux/random.h> -#include <linux/init.h> -#include <linux/serial_reg.h> -#include <asm/io.h> -#include <asm/irq-routing.h> -#include <asm/irc-regs.h> -#include <asm/serial-regs.h> -#include <asm/dma.h> - -struct irq_level frv_irq_levels[16] = { - [0 ... 15] = { - .lock = SPIN_LOCK_UNLOCKED, - } -}; - -struct irq_group *irq_groups[NR_IRQ_GROUPS]; - -extern struct irq_group frv_cpu_irqs; - -void __init frv_irq_route(struct irq_source *source, int irqlevel) -{ - source->level = &frv_irq_levels[irqlevel]; - source->next = frv_irq_levels[irqlevel].sources; - frv_irq_levels[irqlevel].sources = source; -} - -void __init frv_irq_route_external(struct irq_source *source, int irq) -{ - int irqlevel = 0; - - switch (irq) { - case IRQ_CPU_EXTERNAL0: irqlevel = IRQ_XIRQ0_LEVEL; break; - case IRQ_CPU_EXTERNAL1: irqlevel = IRQ_XIRQ1_LEVEL; break; - case IRQ_CPU_EXTERNAL2: irqlevel = IRQ_XIRQ2_LEVEL; break; - case IRQ_CPU_EXTERNAL3: irqlevel = IRQ_XIRQ3_LEVEL; break; - case IRQ_CPU_EXTERNAL4: irqlevel = IRQ_XIRQ4_LEVEL; break; - case IRQ_CPU_EXTERNAL5: irqlevel = IRQ_XIRQ5_LEVEL; break; - case IRQ_CPU_EXTERNAL6: irqlevel = IRQ_XIRQ6_LEVEL; break; - case IRQ_CPU_EXTERNAL7: irqlevel = IRQ_XIRQ7_LEVEL; break; - default: BUG(); - } - - source->level = &frv_irq_levels[irqlevel]; - source->next = frv_irq_levels[irqlevel].sources; - frv_irq_levels[irqlevel].sources = source; -} - -void __init frv_irq_set_group(struct irq_group *group) -{ - irq_groups[group->first_irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP] = group; -} - -void distribute_irqs(struct irq_group *group, unsigned long irqmask) -{ - struct irqaction *action; - int irq; - - while (irqmask) { - asm("scan %1,gr0,%0" : "=r"(irq) : "r"(irqmask)); - if (irq < 0 || irq > 31) - asm volatile("break"); - irq = 31 - irq; - - irqmask &= ~(1 << irq); - action = group->actions[irq]; - - irq += group->first_irq; - - if (action) { - int status = 0; - -// if (!(action->flags & IRQF_DISABLED)) -// local_irq_enable(); - - do { - status |= action->flags; - action->handler(irq, action->dev_id, __frame); - action = action->next; - } while (action); - - if (status & IRQF_SAMPLE_RANDOM) - add_interrupt_randomness(irq); - local_irq_disable(); - } - } -} - -/*****************************************************************************/ -/* - * CPU UART interrupts - */ -static void frv_cpuuart_doirq(struct irq_source *source) -{ -// uint8_t iir = readb(source->muxdata + UART_IIR * 8); -// if ((iir & 0x0f) != UART_IIR_NO_INT) - distribute_irqs(&frv_cpu_irqs, source->irqmask); -} - -struct irq_source frv_cpuuart[2] = { -#define __CPUUART(X, A) \ - [X] = { \ - .muxname = "uart", \ - .muxdata = (volatile void __iomem *)(unsigned long)A,\ - .irqmask = 1 << IRQ_CPU_UART##X, \ - .doirq = frv_cpuuart_doirq, \ - } - - __CPUUART(0, UART0_BASE), - __CPUUART(1, UART1_BASE), -}; - -/*****************************************************************************/ -/* - * CPU DMA interrupts - */ -static void frv_cpudma_doirq(struct irq_source *source) -{ - uint32_t cstr = readl(source->muxdata + DMAC_CSTRx); - if (cstr & DMAC_CSTRx_INT) - distribute_irqs(&frv_cpu_irqs, source->irqmask); -} - -struct irq_source frv_cpudma[8] = { -#define __CPUDMA(X, A) \ - [X] = { \ - .muxname = "dma", \ - .muxdata = (volatile void __iomem *)(unsigned long)A,\ - .irqmask = 1 << IRQ_CPU_DMA##X, \ - .doirq = frv_cpudma_doirq, \ - } - - __CPUDMA(0, 0xfe000900), - __CPUDMA(1, 0xfe000980), - __CPUDMA(2, 0xfe000a00), - __CPUDMA(3, 0xfe000a80), - __CPUDMA(4, 0xfe001000), - __CPUDMA(5, 0xfe001080), - __CPUDMA(6, 0xfe001100), - __CPUDMA(7, 0xfe001180), -}; - -/*****************************************************************************/ -/* - * CPU timer interrupts - can't tell whether they've generated an interrupt or not - */ -static void frv_cputimer_doirq(struct irq_source *source) -{ - distribute_irqs(&frv_cpu_irqs, source->irqmask); -} - -struct irq_source frv_cputimer[3] = { -#define __CPUTIMER(X) \ - [X] = { \ - .muxname = "timer", \ - .muxdata = NULL, \ - .irqmask = 1 << IRQ_CPU_TIMER##X, \ - .doirq = frv_cputimer_doirq, \ - } - - __CPUTIMER(0), - __CPUTIMER(1), - __CPUTIMER(2), -}; - -/*****************************************************************************/ -/* - * external CPU interrupts - can't tell directly whether they've generated an interrupt or not - */ -static void frv_cpuexternal_doirq(struct irq_source *source) -{ - distribute_irqs(&frv_cpu_irqs, source->irqmask); -} - -struct irq_source frv_cpuexternal[8] = { -#define __CPUEXTERNAL(X) \ - [X] = { \ - .muxname = "ext", \ - .muxdata = NULL, \ - .irqmask = 1 << IRQ_CPU_EXTERNAL##X, \ - .doirq = frv_cpuexternal_doirq, \ - } - - __CPUEXTERNAL(0), - __CPUEXTERNAL(1), - __CPUEXTERNAL(2), - __CPUEXTERNAL(3), - __CPUEXTERNAL(4), - __CPUEXTERNAL(5), - __CPUEXTERNAL(6), - __CPUEXTERNAL(7), -}; - -#define set_IRR(N,A,B,C,D) __set_IRR(N, (A << 28) | (B << 24) | (C << 20) | (D << 16)) - -struct irq_group frv_cpu_irqs = { - .sources = { - [IRQ_CPU_UART0] = &frv_cpuuart[0], - [IRQ_CPU_UART1] = &frv_cpuuart[1], - [IRQ_CPU_TIMER0] = &frv_cputimer[0], - [IRQ_CPU_TIMER1] = &frv_cputimer[1], - [IRQ_CPU_TIMER2] = &frv_cputimer[2], - [IRQ_CPU_DMA0] = &frv_cpudma[0], - [IRQ_CPU_DMA1] = &frv_cpudma[1], - [IRQ_CPU_DMA2] = &frv_cpudma[2], - [IRQ_CPU_DMA3] = &frv_cpudma[3], - [IRQ_CPU_DMA4] = &frv_cpudma[4], - [IRQ_CPU_DMA5] = &frv_cpudma[5], - [IRQ_CPU_DMA6] = &frv_cpudma[6], - [IRQ_CPU_DMA7] = &frv_cpudma[7], - [IRQ_CPU_EXTERNAL0] = &frv_cpuexternal[0], - [IRQ_CPU_EXTERNAL1] = &frv_cpuexternal[1], - [IRQ_CPU_EXTERNAL2] = &frv_cpuexternal[2], - [IRQ_CPU_EXTERNAL3] = &frv_cpuexternal[3], - [IRQ_CPU_EXTERNAL4] = &frv_cpuexternal[4], - [IRQ_CPU_EXTERNAL5] = &frv_cpuexternal[5], - [IRQ_CPU_EXTERNAL6] = &frv_cpuexternal[6], - [IRQ_CPU_EXTERNAL7] = &frv_cpuexternal[7], - }, -}; - -/*****************************************************************************/ -/* - * route the CPU's interrupt sources - */ -void __init route_cpu_irqs(void) -{ - frv_irq_set_group(&frv_cpu_irqs); - - __set_IITMR(0, 0x003f0000); /* DMA0-3, TIMER0-2 IRQ detect levels */ - __set_IITMR(1, 0x20000000); /* ERR0-1, UART0-1, DMA4-7 IRQ detect levels */ - - /* route UART and error interrupts */ - frv_irq_route(&frv_cpuuart[0], IRQ_UART0_LEVEL); - frv_irq_route(&frv_cpuuart[1], IRQ_UART1_LEVEL); - - set_IRR(6, IRQ_GDBSTUB_LEVEL, IRQ_GDBSTUB_LEVEL, IRQ_UART1_LEVEL, IRQ_UART0_LEVEL); - - /* route DMA channel interrupts */ - frv_irq_route(&frv_cpudma[0], IRQ_DMA0_LEVEL); - frv_irq_route(&frv_cpudma[1], IRQ_DMA1_LEVEL); - frv_irq_route(&frv_cpudma[2], IRQ_DMA2_LEVEL); - frv_irq_route(&frv_cpudma[3], IRQ_DMA3_LEVEL); - frv_irq_route(&frv_cpudma[4], IRQ_DMA4_LEVEL); - frv_irq_route(&frv_cpudma[5], IRQ_DMA5_LEVEL); - frv_irq_route(&frv_cpudma[6], IRQ_DMA6_LEVEL); - frv_irq_route(&frv_cpudma[7], IRQ_DMA7_LEVEL); - - set_IRR(4, IRQ_DMA3_LEVEL, IRQ_DMA2_LEVEL, IRQ_DMA1_LEVEL, IRQ_DMA0_LEVEL); - set_IRR(7, IRQ_DMA7_LEVEL, IRQ_DMA6_LEVEL, IRQ_DMA5_LEVEL, IRQ_DMA4_LEVEL); - - /* route timer interrupts */ - frv_irq_route(&frv_cputimer[0], IRQ_TIMER0_LEVEL); - frv_irq_route(&frv_cputimer[1], IRQ_TIMER1_LEVEL); - frv_irq_route(&frv_cputimer[2], IRQ_TIMER2_LEVEL); - - set_IRR(5, 0, IRQ_TIMER2_LEVEL, IRQ_TIMER1_LEVEL, IRQ_TIMER0_LEVEL); - - /* route external interrupts */ - frv_irq_route(&frv_cpuexternal[0], IRQ_XIRQ0_LEVEL); - frv_irq_route(&frv_cpuexternal[1], IRQ_XIRQ1_LEVEL); - frv_irq_route(&frv_cpuexternal[2], IRQ_XIRQ2_LEVEL); - frv_irq_route(&frv_cpuexternal[3], IRQ_XIRQ3_LEVEL); - frv_irq_route(&frv_cpuexternal[4], IRQ_XIRQ4_LEVEL); - frv_irq_route(&frv_cpuexternal[5], IRQ_XIRQ5_LEVEL); - frv_irq_route(&frv_cpuexternal[6], IRQ_XIRQ6_LEVEL); - frv_irq_route(&frv_cpuexternal[7], IRQ_XIRQ7_LEVEL); - - set_IRR(2, IRQ_XIRQ7_LEVEL, IRQ_XIRQ6_LEVEL, IRQ_XIRQ5_LEVEL, IRQ_XIRQ4_LEVEL); - set_IRR(3, IRQ_XIRQ3_LEVEL, IRQ_XIRQ2_LEVEL, IRQ_XIRQ1_LEVEL, IRQ_XIRQ0_LEVEL); - -#if defined(CONFIG_MB93091_VDK) - __set_TM1(0x55550000); /* XIRQ7-0 all active low */ -#elif defined(CONFIG_MB93093_PDK) - __set_TM1(0x15550000); /* XIRQ7 active high, 6-0 all active low */ -#else -#error dont know external IRQ trigger levels for this setup -#endif - -} /* end route_cpu_irqs() */ diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c index 08967010be0..5ac041c7c0a 100644 --- a/arch/frv/kernel/irq.c +++ b/arch/frv/kernel/irq.c @@ -1,6 +1,6 @@ /* irq.c: FRV IRQ handling * - * Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved. + * Copyright (C) 2003, 2004, 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or @@ -9,13 +9,6 @@ * 2 of the License, or (at your option) any later version. */ -/* - * (mostly architecture independent, will move to kernel/irq.c in 2.5.) - * - * IRQs are in fact implemented a bit like signal handlers for the kernel. - * Naturally it's not a 1:1 relation, but there are similarities. - */ - #include <linux/ptrace.h> #include <linux/errno.h> #include <linux/signal.h> @@ -43,19 +36,16 @@ #include <asm/delay.h> #include <asm/irq.h> #include <asm/irc-regs.h> -#include <asm/irq-routing.h> #include <asm/gdb-stub.h> -extern void __init fpga_init(void); -extern void __init route_mb93493_irqs(void); - -static void register_irq_proc (unsigned int irq); +#define set_IRR(N,A,B,C,D) __set_IRR(N, (A << 28) | (B << 24) | (C << 20) | (D << 16)) -/* - * Special irq handlers. - */ +extern void __init fpga_init(void); +#ifdef CONFIG_FUJITSU_MB93493 +extern void __init mb93493_init(void); +#endif -irqreturn_t no_action(int cpl, void *dev_id, struct pt_regs *regs) { return IRQ_HANDLED; } +#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR)) atomic_t irq_err_count; @@ -64,215 +54,86 @@ atomic_t irq_err_count; */ int show_interrupts(struct seq_file *p, void *v) { - struct irqaction *action; - struct irq_group *group; + int i = *(loff_t *) v, cpu; + struct irqaction * action; unsigned long flags; - int level, grp, ix, i, j; - - i = *(loff_t *) v; - - switch (i) { - case 0: - seq_printf(p, " "); - for_each_online_cpu(j) - seq_printf(p, "CPU%d ",j); - - seq_putc(p, '\n'); - break; - case 1 ... NR_IRQ_GROUPS * NR_IRQ_ACTIONS_PER_GROUP: - local_irq_save(flags); - - grp = (i - 1) / NR_IRQ_ACTIONS_PER_GROUP; - group = irq_groups[grp]; - if (!group) - goto skip; - - ix = (i - 1) % NR_IRQ_ACTIONS_PER_GROUP; - action = group->actions[ix]; - if (!action) - goto skip; - - seq_printf(p, "%3d: ", i - 1); - -#ifndef CONFIG_SMP - seq_printf(p, "%10u ", kstat_irqs(i)); -#else - for_each_online_cpu(j) - seq_printf(p, "%10u ", kstat_cpu(j).irqs[i - 1]); -#endif - - level = group->sources[ix]->level - frv_irq_levels; - - seq_printf(p, " %12s@%x", group->sources[ix]->muxname, level); - seq_printf(p, " %s", action->name); - - for (action = action->next; action; action = action->next) - seq_printf(p, ", %s", action->name); + if (i == 0) { + char cpuname[12]; + seq_printf(p, " "); + for_each_present_cpu(cpu) { + sprintf(cpuname, "CPU%d", cpu); + seq_printf(p, " %10s", cpuname); + } seq_putc(p, '\n'); -skip: - local_irq_restore(flags); - break; + } - case NR_IRQ_GROUPS * NR_IRQ_ACTIONS_PER_GROUP + 1: - seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); - break; + if (i < NR_IRQS) { + spin_lock_irqsave(&irq_desc[i].lock, flags); + action = irq_desc[i].action; + if (action) { + seq_printf(p, "%3d: ", i); + for_each_present_cpu(cpu) + seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]); + seq_printf(p, " %10s", irq_desc[i].chip->name ? : "-"); + seq_printf(p, " %s", action->name); + for (action = action->next; + action; + action = action->next) + seq_printf(p, ", %s", action->name); + + seq_putc(p, '\n'); + } - default: - break; + spin_unlock_irqrestore(&irq_desc[i].lock, flags); + } else if (i == NR_IRQS) { + seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count)); } return 0; } - /* - * Generic enable/disable code: this just calls - * down into the PIC-specific version for the actual - * hardware disable after having gotten the irq - * controller lock. + * on-CPU PIC operations */ - -/** - * disable_irq_nosync - disable an irq without waiting - * @irq: Interrupt to disable - * - * Disable the selected interrupt line. Disables and Enables are - * nested. - * Unlike disable_irq(), this function does not ensure existing - * instances of the IRQ handler have completed before returning. - * - * This function may be called from IRQ context. - */ - -void disable_irq_nosync(unsigned int irq) +static void frv_cpupic_ack(unsigned int irqlevel) { - struct irq_source *source; - struct irq_group *group; - struct irq_level *level; - unsigned long flags; - int idx = irq & (NR_IRQ_ACTIONS_PER_GROUP - 1); - - group = irq_groups[irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP]; - if (!group) - BUG(); - - source = group->sources[idx]; - if (!source) - BUG(); - - level = source->level; - - spin_lock_irqsave(&level->lock, flags); - - if (group->control) { - if (!group->disable_cnt[idx]++) - group->control(group, idx, 0); - } else if (!level->disable_count++) { - __set_MASK(level - frv_irq_levels); - } - - spin_unlock_irqrestore(&level->lock, flags); + __clr_RC(irqlevel); + __clr_IRL(); } -EXPORT_SYMBOL(disable_irq_nosync); - -/** - * disable_irq - disable an irq and wait for completion - * @irq: Interrupt to disable - * - * Disable the selected interrupt line. Enables and Disables are - * nested. - * This function waits for any pending IRQ handlers for this interrupt - * to complete before returning. If you use this function while - * holding a resource the IRQ handler may need you will deadlock. - * - * This function may be called - with care - from IRQ context. - */ - -void disable_irq(unsigned int irq) +static void frv_cpupic_mask(unsigned int irqlevel) { - disable_irq_nosync(irq); - -#ifdef CONFIG_SMP - if (!local_irq_count(smp_processor_id())) { - do { - barrier(); - } while (irq_desc[irq].status & IRQ_INPROGRESS); - } -#endif + __set_MASK(irqlevel); } -EXPORT_SYMBOL(disable_irq); - -/** - * enable_irq - enable handling of an irq - * @irq: Interrupt to enable - * - * Undoes the effect of one call to disable_irq(). If this - * matches the last disable, processing of interrupts on this - * IRQ line is re-enabled. - * - * This function may be called from IRQ context. - */ - -void enable_irq(unsigned int irq) +static void frv_cpupic_mask_ack(unsigned int irqlevel) { - struct irq_source *source; - struct irq_group *group; - struct irq_level *level; - unsigned long flags; - int idx = irq & (NR_IRQ_ACTIONS_PER_GROUP - 1); - int count; - - group = irq_groups[irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP]; - if (!group) - BUG(); - - source = group->sources[idx]; - if (!source) - BUG(); - - level = source->level; - - spin_lock_irqsave(&level->lock, flags); - - if (group->control) - count = group->disable_cnt[idx]; - else - count = level->disable_count; - - switch (count) { - case 1: - if (group->control) { - if (group->actions[idx]) - group->control(group, idx, 1); - } else { - if (level->usage) - __clr_MASK(level - frv_irq_levels); - } - /* fall-through */ - - default: - count--; - break; - - case 0: - printk("enable_irq(%u) unbalanced from %p\n", irq, __builtin_return_address(0)); - } + __set_MASK(irqlevel); + __clr_RC(irqlevel); + __clr_IRL(); +} - if (group->control) - group->disable_cnt[idx] = count; - else - level->disable_count = count; +static void frv_cpupic_unmask(unsigned int irqlevel) +{ + __clr_MASK(irqlevel); +} - spin_unlock_irqrestore(&level->lock, flags); +static void frv_cpupic_end(unsigned int irqlevel) +{ + __clr_MASK(irqlevel); } -EXPORT_SYMBOL(enable_irq); +static struct irq_chip frv_cpu_pic = { + .name = "cpu", + .ack = frv_cpupic_ack, + .mask = frv_cpupic_mask, + .mask_ack = frv_cpupic_mask_ack, + .unmask = frv_cpupic_unmask, + .end = frv_cpupic_end, +}; -/*****************************************************************************/ /* * handles all normal device IRQ's * - registers are referred to by the __frame variable (GR28) @@ -281,463 +142,65 @@ EXPORT_SYMBOL(enable_irq); */ asmlinkage void do_IRQ(void) { - struct irq_source *source; - int level, cpu; - irq_enter(); - - level = (__frame->tbr >> 4) & 0xf; - cpu = smp_processor_id(); - - if ((unsigned long) __frame - (unsigned long) (current + 1) < 512) - BUG(); - - __set_MASK(level); - __clr_RC(level); - __clr_IRL(); - - kstat_this_cpu.irqs[level]++; - - for (source = frv_irq_levels[level].sources; source; source = source->next) - source->doirq(source); - - __clr_MASK(level); - + generic_handle_irq(__get_IRL(), __frame); irq_exit(); +} -} /* end do_IRQ() */ - -/*****************************************************************************/ /* * handles all NMIs when not co-opted by the debugger * - registers are referred to by the __frame variable (GR28) */ asmlinkage void do_NMI(void) { -} /* end do_NMI() */ - -/*****************************************************************************/ -/** - * request_irq - allocate an interrupt line - * @irq: Interrupt line to allocate - * @handler: Function to be called when the IRQ occurs - * @irqflags: Interrupt type flags - * @devname: An ascii name for the claiming device - * @dev_id: A cookie passed back to the handler function - * - * This call allocates interrupt resources and enables the - * interrupt line and IRQ handling. From the point this - * call is made your handler function may be invoked. Since - * your handler function must clear any interrupt the board - * raises, you must take care both to initialise your hardware - * and to set up the interrupt handler in the right order. - * - * Dev_id must be globally unique. Normally the address of the - * device data structure is used as the cookie. Since the handler - * receives this value it makes sense to use it. - * - * If your interrupt is shared you must pass a non NULL dev_id - * as this is required when freeing the interrupt. - * - * Flags: - * - * IRQF_SHARED Interrupt is shared - * - * IRQF_DISABLED Disable local interrupts while processing - * - * IRQF_SAMPLE_RANDOM The interrupt can be used for entropy - * - */ - -int request_irq(unsigned int irq, - irqreturn_t (*handler)(int, void *, struct pt_regs *), - unsigned long irqflags, - const char * devname, - void *dev_id) -{ - int retval; - struct irqaction *action; - -#if 1 - /* - * Sanity-check: shared interrupts should REALLY pass in - * a real dev-ID, otherwise we'll have trouble later trying - * to figure out which interrupt is which (messes up the - * interrupt freeing logic etc). - */ - if (irqflags & IRQF_SHARED) { - if (!dev_id) - printk("Bad boy: %s (at 0x%x) called us without a dev_id!\n", - devname, (&irq)[-1]); - } -#endif - - if ((irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP) >= NR_IRQ_GROUPS) - return -EINVAL; - if (!handler) - return -EINVAL; - - action = (struct irqaction *) kmalloc(sizeof(struct irqaction), GFP_KERNEL); - if (!action) - return -ENOMEM; - - action->handler = handler; - action->flags = irqflags; - action->mask = CPU_MASK_NONE; - action->name = devname; - action->next = NULL; - action->dev_id = dev_id; - - retval = setup_irq(irq, action); - if (retval) - kfree(action); - return retval; -} - -EXPORT_SYMBOL(request_irq); - -/** - * free_irq - free an interrupt - * @irq: Interrupt line to free - * @dev_id: Device identity to free - * - * Remove an interrupt handler. The handler is removed and if the - * interrupt line is no longer in use by any driver it is disabled. - * On a shared IRQ the caller must ensure the interrupt is disabled - * on the card it drives before calling this function. The function - * does not return until any executing interrupts for this IRQ - * have completed. - * - * This function may be called from interrupt context. - * - * Bugs: Attempting to free an irq in a handler for the same irq hangs - * the machine. - */ - -void free_irq(unsigned int irq, void *dev_id) -{ - struct irq_source *source; - struct irq_group *group; - struct irq_level *level; - struct irqaction **p, **pp; - unsigned long flags; - - if ((irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP) >= NR_IRQ_GROUPS) - return; - - group = irq_groups[irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP]; - if (!group) - BUG(); - - source = group->sources[irq & (NR_IRQ_ACTIONS_PER_GROUP - 1)]; - if (!source) - BUG(); - - level = source->level; - p = &group->actions[irq & (NR_IRQ_ACTIONS_PER_GROUP - 1)]; - - spin_lock_irqsave(&level->lock, flags); - - for (pp = p; *pp; pp = &(*pp)->next) { - struct irqaction *action = *pp; - - if (action->dev_id != dev_id) - continue; - - /* found it - remove from the list of entries */ - *pp = action->next; - - level->usage--; - - if (p == pp && group->control) - group->control(group, irq & (NR_IRQ_ACTIONS_PER_GROUP - 1), 0); - - if (level->usage == 0) - __set_MASK(level - frv_irq_levels); - - spin_unlock_irqrestore(&level->lock,flags); - -#ifdef CONFIG_SMP - /* Wait to make sure it's not being used on another CPU */ - while (desc->status & IRQ_INPROGRESS) - barrier(); -#endif - kfree(action); - return; - } -} - -EXPORT_SYMBOL(free_irq); - -/* - * IRQ autodetection code.. - * - * This depends on the fact that any interrupt that comes in on to an - * unassigned IRQ will cause GxICR_DETECT to be set - */ - -static DECLARE_MUTEX(probe_sem); - -/** - * probe_irq_on - begin an interrupt autodetect - * - * Commence probing for an interrupt. The interrupts are scanned - * and a mask of potential interrupt lines is returned. - * - */ - -unsigned long probe_irq_on(void) -{ - down(&probe_sem); - return 0; } -EXPORT_SYMBOL(probe_irq_on); - /* - * Return a mask of triggered interrupts (this - * can handle only legacy ISA interrupts). - */ - -/** - * probe_irq_mask - scan a bitmap of interrupt lines - * @val: mask of interrupts to consider - * - * Scan the ISA bus interrupt lines and return a bitmap of - * active interrupts. The interrupt probe logic state is then - * returned to its previous value. - * - * Note: we need to scan all the irq's even though we will - * only return ISA irq numbers - just so that we reset them - * all to a known state. - */ -unsigned int probe_irq_mask(unsigned long xmask) -{ - up(&probe_sem); - return 0; -} - -EXPORT_SYMBOL(probe_irq_mask); - -/* - * Return the one interrupt that triggered (this can - * handle any interrupt source). - */ - -/** - * probe_irq_off - end an interrupt autodetect - * @xmask: mask of potential interrupts (unused) - * - * Scans the unused interrupt lines and returns the line which - * appears to have triggered the interrupt. If no interrupt was - * found then zero is returned. If more than one interrupt is - * found then minus the first candidate is returned to indicate - * their is doubt. - * - * The interrupt probe logic state is returned to its previous - * value. - * - * BUGS: When used in a module (which arguably shouldnt happen) - * nothing prevents two IRQ probe callers from overlapping. The - * results of this are non-optimal. + * initialise the interrupt system */ - -int probe_irq_off(unsigned long xmask) -{ - up(&probe_sem); - return -1; -} - -EXPORT_SYMBOL(probe_irq_off); - -/* this was setup_x86_irq but it seems pretty generic */ -int setup_irq(unsigned int irq, struct irqaction *new) -{ - struct irq_source *source; - struct irq_group *group; - struct irq_level *level; - struct irqaction **p, **pp; - unsigned long flags; - - group = irq_groups[irq >> NR_IRQ_LOG2_ACTIONS_PER_GROUP]; - if (!group) - BUG(); - - source = group->sources[irq & (NR_IRQ_ACTIONS_PER_GROUP - 1)]; - if (!source) - BUG(); - - level = source->level; - - p = &group->actions[irq & (NR_IRQ_ACTIONS_PER_GROUP - 1)]; - - /* - * Some drivers like serial.c use request_irq() heavily, - * so we have to be careful not to interfere with a - * running system. - */ - if (new->flags & IRQF_SAMPLE_RANDOM) { - /* - * This function might sleep, we want to call it first, - * outside of the atomic block. - * Yes, this might clear the entropy pool if the wrong - * driver is attempted to be loaded, without actually - * installing a new handler, but is this really a problem, - * only the sysadmin is able to do this. - */ - rand_initialize_irq(irq); - } - - /* must juggle the interrupt processing stuff with interrupts disabled */ - spin_lock_irqsave(&level->lock, flags); - - /* can't share interrupts unless all parties agree to */ - if (level->usage != 0 && !(level->flags & new->flags & IRQF_SHARED)) { - spin_unlock_irqrestore(&level->lock,flags); - return -EBUSY; - } - - /* add new interrupt at end of irq queue */ - pp = p; - while (*pp) - pp = &(*pp)->next; - - *pp = new; - - level->usage++; - level->flags = new->flags; - - /* turn the interrupts on */ - if (level->usage == 1) - __clr_MASK(level - frv_irq_levels); - - if (p == pp && group->control) - group->control(group, irq & (NR_IRQ_ACTIONS_PER_GROUP - 1), 1); - - spin_unlock_irqrestore(&level->lock, flags); - register_irq_proc(irq); - return 0; -} - -static struct proc_dir_entry * root_irq_dir; -static struct proc_dir_entry * irq_dir [NR_IRQS]; - -#define HEX_DIGITS 8 - -static unsigned int parse_hex_value (const char __user *buffer, - unsigned long count, unsigned long *ret) -{ - unsigned char hexnum [HEX_DIGITS]; - unsigned long value; - int i; - - if (!count) - return -EINVAL; - if (count > HEX_DIGITS) - count = HEX_DIGITS; - if (copy_from_user(hexnum, buffer, count)) - return -EFAULT; - - /* - * Parse the first 8 characters as a hex string, any non-hex char - * is end-of-string. '00e1', 'e1', '00E1', 'E1' are all the same. - */ - value = 0; - - for (i = 0; i < count; i++) { - unsigned int c = hexnum[i]; - - switch (c) { - case '0' ... '9': c -= '0'; break; - case 'a' ... 'f': c -= 'a'-10; break; - case 'A' ... 'F': c -= 'A'-10; break; - default: - goto out; - } - value = (value << 4) | c; - } -out: - *ret = value; - return 0; -} - - -static int prof_cpu_mask_read_proc (char *page, char **start, off_t off, - int count, int *eof, void *data) -{ - unsigned long *mask = (unsigned long *) data; - if (count < HEX_DIGITS+1) - return -EINVAL; - return sprintf (page, "%08lx\n", *mask); -} - -static int prof_cpu_mask_write_proc (struct file *file, const char __user *buffer, - unsigned long count, void *data) -{ - unsigned long *mask = (unsigned long *) data, full_count = count, err; - unsigned long new_value; - - show_state(); - err = parse_hex_value(buffer, count, &new_value); - if (err) - return err; - - *mask = new_value; - return full_count; -} - -#define MAX_NAMELEN 10 - -static void register_irq_proc (unsigned int irq) -{ - char name [MAX_NAMELEN]; - - if (!root_irq_dir || irq_dir[irq]) - return; - - memset(name, 0, MAX_NAMELEN); - sprintf(name, "%d", irq); - - /* create /proc/irq/1234 */ - irq_dir[irq] = proc_mkdir(name, root_irq_dir); -} - -unsigned long prof_cpu_mask = -1; - -void init_irq_proc (void) +void __init init_IRQ(void) { - struct proc_dir_entry *entry; - int i; + int level; - /* create /proc/irq */ - root_irq_dir = proc_mkdir("irq", NULL); + for (level = 1; level <= 14; level++) + set_irq_chip_and_handler(level, &frv_cpu_pic, + handle_level_irq); - /* create /proc/irq/prof_cpu_mask */ - entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir); - if (!entry) - return; + set_irq_handler(IRQ_CPU_TIMER0, handle_edge_irq); - entry->nlink = 1; - entry->data = (void *)&prof_cpu_mask; - entry->read_proc = prof_cpu_mask_read_proc; - entry->write_proc = prof_cpu_mask_write_proc; - - /* - * Create entries for all existing IRQs. + /* set the trigger levels for internal interrupt sources + * - timers all falling-edge + * - ERR0 is rising-edge + * - all others are high-level */ - for (i = 0; i < NR_IRQS; i++) - register_irq_proc(i); -} + __set_IITMR(0, 0x003f0000); /* DMA0-3, TIMER0-2 */ + __set_IITMR(1, 0x20000000); /* ERR0-1, UART0-1, DMA4-7 */ + + /* route internal interrupts */ + set_IRR(4, IRQ_DMA3_LEVEL, IRQ_DMA2_LEVEL, IRQ_DMA1_LEVEL, + IRQ_DMA0_LEVEL); + set_IRR(5, 0, IRQ_TIMER2_LEVEL, IRQ_TIMER1_LEVEL, IRQ_TIMER0_LEVEL); + set_IRR(6, IRQ_GDBSTUB_LEVEL, IRQ_GDBSTUB_LEVEL, + IRQ_UART1_LEVEL, IRQ_UART0_LEVEL); + set_IRR(7, IRQ_DMA7_LEVEL, IRQ_DMA6_LEVEL, IRQ_DMA5_LEVEL, + IRQ_DMA4_LEVEL); + + /* route external interrupts */ + set_IRR(2, IRQ_XIRQ7_LEVEL, IRQ_XIRQ6_LEVEL, IRQ_XIRQ5_LEVEL, + IRQ_XIRQ4_LEVEL); + set_IRR(3, IRQ_XIRQ3_LEVEL, IRQ_XIRQ2_LEVEL, IRQ_XIRQ1_LEVEL, + IRQ_XIRQ0_LEVEL); + +#if defined(CONFIG_MB93091_VDK) + __set_TM1(0x55550000); /* XIRQ7-0 all active low */ +#elif defined(CONFIG_MB93093_PDK) + __set_TM1(0x15550000); /* XIRQ7 active high, 6-0 all active low */ +#else +#error dont know external IRQ trigger levels for this setup +#endif -/*****************************************************************************/ -/* - * initialise the interrupt system - */ -void __init init_IRQ(void) -{ - route_cpu_irqs(); fpga_init(); #ifdef CONFIG_FUJITSU_MB93493 - route_mb93493_irqs(); + mb93493_init(); #endif -} /* end init_IRQ() */ +} diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c index af08ccd4ed6..d96a57e5f03 100644 --- a/arch/frv/kernel/setup.c +++ b/arch/frv/kernel/setup.c @@ -43,7 +43,6 @@ #include <asm/mb-regs.h> #include <asm/mb93493-regs.h> #include <asm/gdb-stub.h> -#include <asm/irq-routing.h> #include <asm/io.h> #ifdef CONFIG_BLK_DEV_INITRD diff --git a/arch/frv/kernel/time.c b/arch/frv/kernel/time.c index 68a77fe3bb4..3d0284bccb9 100644 --- a/arch/frv/kernel/time.c +++ b/arch/frv/kernel/time.c @@ -26,7 +26,6 @@ #include <asm/timer-regs.h> #include <asm/mb-regs.h> #include <asm/mb86943a.h> -#include <asm/irq-routing.h> #include <linux/timex.h> diff --git a/arch/frv/mb93090-mb00/pci-irq.c b/arch/frv/mb93090-mb00/pci-irq.c index 2278c80bd88..ba587523c01 100644 --- a/arch/frv/mb93090-mb00/pci-irq.c +++ b/arch/frv/mb93090-mb00/pci-irq.c @@ -15,7 +15,6 @@ #include <asm/io.h> #include <asm/smp.h> -#include <asm/irq-routing.h> #include "pci-frv.h" diff --git a/arch/frv/mm/init.c b/arch/frv/mm/init.c index b5b4286f9dd..3f3a0ed3539 100644 --- a/arch/frv/mm/init.c +++ b/arch/frv/mm/init.c @@ -98,7 +98,7 @@ void show_mem(void) */ void __init paging_init(void) { - unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0}; + unsigned long zones_size[MAX_NR_ZONES] = {0, }; /* allocate some pages for kernel housekeeping tasks */ empty_bad_page_table = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); |