diff options
| -rw-r--r-- | arch/m68k/amiga/amiints.c | 4 | ||||
| -rw-r--r-- | arch/m68k/bvme6000/bvmeints.c | 1 | ||||
| -rw-r--r-- | arch/m68k/kernel/ints.c | 171 | ||||
| -rw-r--r-- | arch/m68k/mac/config.c | 15 | ||||
| -rw-r--r-- | arch/m68k/mac/macints.c | 7 | ||||
| -rw-r--r-- | arch/m68k/mvme147/147ints.c | 1 | ||||
| -rw-r--r-- | arch/m68k/mvme16x/16xints.c | 1 | ||||
| -rw-r--r-- | arch/m68k/q40/config.c | 2 | ||||
| -rw-r--r-- | arch/m68k/q40/q40ints.c | 17 | ||||
| -rw-r--r-- | drivers/block/amiflop.c | 1 | ||||
| -rw-r--r-- | include/asm-m68k/atari_stdma.h | 2 | ||||
| -rw-r--r-- | include/asm-m68k/irq.h | 25 |
12 files changed, 148 insertions, 99 deletions
diff --git a/arch/m68k/amiga/amiints.c b/arch/m68k/amiga/amiints.c index d02458ebd34..e2d47b7bdfc 100644 --- a/arch/m68k/amiga/amiints.c +++ b/arch/m68k/amiga/amiints.c @@ -40,6 +40,7 @@ #include <linux/sched.h> #include <linux/kernel_stat.h> #include <linux/init.h> +#include <linux/interrupt.h> #include <linux/errno.h> #include <linux/seq_file.h> @@ -484,13 +485,10 @@ static irqreturn_t ami_int7(int irq, void *dev_id, struct pt_regs *fp) } irqreturn_t (*amiga_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = { - [0] = ami_badint, [1] = ami_int1, - [2] = ami_badint, [3] = ami_int3, [4] = ami_int4, [5] = ami_int5, - [6] = ami_badint, [7] = ami_int7 }; diff --git a/arch/m68k/bvme6000/bvmeints.c b/arch/m68k/bvme6000/bvmeints.c index 298a8df0266..b015fdc1b0c 100644 --- a/arch/m68k/bvme6000/bvmeints.c +++ b/arch/m68k/bvme6000/bvmeints.c @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/interrupt.h> #include <linux/seq_file.h> #include <asm/ptrace.h> diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c index 3ce7c6166bb..c7f6ee67fd5 100644 --- a/arch/m68k/kernel/ints.c +++ b/arch/m68k/kernel/ints.c @@ -45,7 +45,15 @@ #endif /* table for system interrupt handlers */ -static irq_handler_t irq_list[SYS_IRQS]; +static struct irq_node *irq_list[SYS_IRQS]; +static struct irq_controller *irq_controller[SYS_IRQS]; + +static struct irq_controller auto_irq_controller = { + .name = "auto", + .lock = SPIN_LOCK_UNLOCKED, + .startup = m68k_irq_startup, + .shutdown = m68k_irq_shutdown, +}; static const char *default_names[SYS_IRQS] = { [0] = "spurious int", @@ -101,17 +109,13 @@ void __init init_IRQ(void) hardirq_mask_is_broken(); } - for (i = 0; i < SYS_IRQS; i++) { - if (mach_default_handler) - irq_list[i].handler = (*mach_default_handler)[i]; - irq_list[i].flags = 0; - irq_list[i].dev_id = NULL; - irq_list[i].devname = default_names[i]; + for (i = IRQ_AUTO_1; i <= IRQ_AUTO_7; i++) { + irq_controller[i] = &auto_irq_controller; + if (mach_default_handler && (*mach_default_handler)[i]) + cpu_request_irq(i, (*mach_default_handler)[i], + 0, default_names[i], NULL); } - for (i = 0; i < NUM_IRQ_NODES; i++) - nodes[i].handler = NULL; - mach_init_IRQ (); } @@ -120,9 +124,12 @@ irq_node_t *new_irq_node(void) irq_node_t *node; short i; - for (node = nodes, i = NUM_IRQ_NODES-1; i >= 0; node++, i--) - if (!node->handler) + for (node = nodes, i = NUM_IRQ_NODES-1; i >= 0; node++, i--) { + if (!node->handler) { + memset(node, 0, sizeof(*node)); return node; + } + } printk ("new_irq_node: out of nodes\n"); return NULL; @@ -149,55 +156,115 @@ void free_irq(unsigned int irq, void *dev_id) EXPORT_SYMBOL(free_irq); -int cpu_request_irq(unsigned int irq, - irqreturn_t (*handler)(int, void *, struct pt_regs *), - unsigned long flags, const char *devname, void *dev_id) +int setup_irq(unsigned int irq, struct irq_node *node) { - if (irq < IRQ_AUTO_1 || irq > IRQ_AUTO_7) { + struct irq_controller *contr; + struct irq_node **prev; + unsigned long flags; + + if (irq >= SYS_IRQS || !(contr = irq_controller[irq])) { printk("%s: Incorrect IRQ %d from %s\n", - __FUNCTION__, irq, devname); + __FUNCTION__, irq, node->devname); return -ENXIO; } -#if 0 - if (!(irq_list[irq].flags & IRQ_FLG_STD)) { - if (irq_list[irq].flags & IRQ_FLG_LOCK) { - printk("%s: IRQ %d from %s is not replaceable\n", - __FUNCTION__, irq, irq_list[irq].devname); - return -EBUSY; - } - if (!(flags & IRQ_FLG_REPLACE)) { - printk("%s: %s can't replace IRQ %d from %s\n", - __FUNCTION__, devname, irq, irq_list[irq].devname); + spin_lock_irqsave(&contr->lock, flags); + + prev = irq_list + irq; + if (*prev) { + /* Can't share interrupts unless both agree to */ + if (!((*prev)->flags & node->flags & SA_SHIRQ)) { + spin_unlock_irqrestore(&contr->lock, flags); return -EBUSY; } + while (*prev) + prev = &(*prev)->next; } -#endif - irq_list[irq].handler = handler; - irq_list[irq].flags = flags; - irq_list[irq].dev_id = dev_id; - irq_list[irq].devname = devname; + if (!irq_list[irq]) { + if (contr->startup) + contr->startup(irq); + else + contr->enable(irq); + } + node->next = NULL; + *prev = node; + + spin_unlock_irqrestore(&contr->lock, flags); + return 0; } +int cpu_request_irq(unsigned int irq, + irqreturn_t (*handler)(int, void *, struct pt_regs *), + unsigned long flags, const char *devname, void *dev_id) +{ + struct irq_node *node; + int res; + + node = new_irq_node(); + if (!node) + return -ENOMEM; + + node->handler = handler; + node->flags = flags; + node->dev_id = dev_id; + node->devname = devname; + + res = setup_irq(irq, node); + if (res) + node->handler = NULL; + + return res; +} + void cpu_free_irq(unsigned int irq, void *dev_id) { - if (irq < IRQ_AUTO_1 || irq > IRQ_AUTO_7) { + struct irq_controller *contr; + struct irq_node **p, *node; + unsigned long flags; + + if (irq >= SYS_IRQS || !(contr = irq_controller[irq])) { printk("%s: Incorrect IRQ %d\n", __FUNCTION__, irq); return; } - if (irq_list[irq].dev_id != dev_id) - printk("%s: Removing probably wrong IRQ %d from %s\n", - __FUNCTION__, irq, irq_list[irq].devname); + spin_lock_irqsave(&contr->lock, flags); + + p = irq_list + irq; + while ((node = *p)) { + if (node->dev_id == dev_id) + break; + p = &node->next; + } + + if (node) { + *p = node->next; + node->handler = NULL; + } else + printk("%s: Removing probably wrong IRQ %d\n", + __FUNCTION__, irq); + + if (!irq_list[irq]) + contr->shutdown(irq); - irq_list[irq].handler = (*mach_default_handler)[irq]; - irq_list[irq].flags = 0; - irq_list[irq].dev_id = NULL; - irq_list[irq].devname = default_names[irq]; + spin_unlock_irqrestore(&contr->lock, flags); } +int m68k_irq_startup(unsigned int irq) +{ + if (irq <= IRQ_AUTO_7) + vectors[VEC_SPUR + irq] = auto_inthandler; + return 0; +} + +void m68k_irq_shutdown(unsigned int irq) +{ + if (irq <= IRQ_AUTO_7) + vectors[VEC_SPUR + irq] = bad_inthandler; +} + + /* * Do we need these probe functions on the m68k? * @@ -250,8 +317,14 @@ static void dummy_free_irq(unsigned int irq, void *dev_id) asmlinkage void m68k_handle_int(unsigned int irq, struct pt_regs *regs) { + struct irq_node *node; + kstat_cpu(0).irqs[irq]++; - irq_list[irq].handler(irq, irq_list[irq].dev_id, regs); + node = irq_list[irq]; + do { + node->handler(irq, node->dev_id, regs); + node = node->next; + } while (node); } asmlinkage void handle_badint(struct pt_regs *regs) @@ -262,16 +335,18 @@ asmlinkage void handle_badint(struct pt_regs *regs) int show_interrupts(struct seq_file *p, void *v) { + struct irq_controller *contr; + struct irq_node *node; int i = *(loff_t *) v; /* autovector interrupts */ - if (i < SYS_IRQS) { - if (mach_default_handler) { - seq_printf(p, "auto %2d: %10u ", i, - i ? kstat_cpu(0).irqs[i] : num_spurious); - seq_puts(p, " "); - seq_printf(p, "%s\n", irq_list[i].devname); - } + if (i < SYS_IRQS && irq_list[i]) { + contr = irq_controller[i]; + node = irq_list[i]; + seq_printf(p, "%s %u: %10u %s", contr->name, i, kstat_cpu(0).irqs[i], node->devname); + while ((node = node->next)) + seq_printf(p, ", %s", node->devname); + seq_puts(p, "\n"); } else if (i == SYS_IRQS) mach_get_irq_list(p, v); return 0; diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c index 19dce75711b..7e04f2a695c 100644 --- a/arch/m68k/mac/config.c +++ b/arch/m68k/mac/config.c @@ -94,20 +94,6 @@ static void mac_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *)) via_init_clock(vector); } -extern irqreturn_t mac_default_handler(int, void *, struct pt_regs *); - -irqreturn_t (*mac_handlers[8])(int, void *, struct pt_regs *)= -{ - mac_default_handler, - mac_default_handler, - mac_default_handler, - mac_default_handler, - mac_default_handler, - mac_default_handler, - mac_default_handler, - mac_default_handler -}; - /* * Parse a Macintosh-specific record in the bootinfo */ @@ -188,7 +174,6 @@ void __init config_mac(void) enable_irq = mac_enable_irq; disable_irq = mac_disable_irq; mach_get_model = mac_get_model; - mach_default_handler = &mac_handlers; mach_get_irq_list = show_mac_interrupts; mach_gettimeoffset = mac_gettimeoffset; #warning move to adb/via init diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c index 7a1600bd195..73b39cd3f94 100644 --- a/arch/m68k/mac/macints.c +++ b/arch/m68k/mac/macints.c @@ -637,13 +637,6 @@ int show_mac_interrupts(struct seq_file *p, void *v) return 0; } -void mac_default_handler(int irq, void *dev_id, struct pt_regs *regs) -{ -#ifdef DEBUG_SPURIOUS - printk("Unexpected IRQ %d on device %p\n", irq, dev_id); -#endif -} - static int num_debug[8]; irqreturn_t mac_debug_handler(int irq, void *dev_id, struct pt_regs *regs) diff --git a/arch/m68k/mvme147/147ints.c b/arch/m68k/mvme147/147ints.c index 69a744ee35a..b4aa5e8f44e 100644 --- a/arch/m68k/mvme147/147ints.c +++ b/arch/m68k/mvme147/147ints.c @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/interrupt.h> #include <linux/seq_file.h> #include <asm/ptrace.h> diff --git a/arch/m68k/mvme16x/16xints.c b/arch/m68k/mvme16x/16xints.c index 793ef735b59..81afada90dd 100644 --- a/arch/m68k/mvme16x/16xints.c +++ b/arch/m68k/mvme16x/16xints.c @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/interrupt.h> #include <linux/seq_file.h> #include <asm/system.h> diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c index 5e0f9b04d45..01fd662bfad 100644 --- a/arch/m68k/q40/config.c +++ b/arch/m68k/q40/config.c @@ -37,7 +37,6 @@ #include <asm/q40_master.h> extern irqreturn_t q40_process_int (int level, struct pt_regs *regs); -extern irqreturn_t (*q40_default_handler[]) (int, void *, struct pt_regs *); /* added just for debugging */ extern void q40_init_IRQ (void); extern void q40_free_irq (unsigned int, void *); extern int show_q40_interrupts (struct seq_file *, void *); @@ -181,7 +180,6 @@ void __init config_q40(void) mach_request_irq = q40_request_irq; enable_irq = q40_enable_irq; disable_irq = q40_disable_irq; - mach_default_handler = &q40_default_handler; mach_get_model = q40_get_model; mach_get_hardware_list = q40_get_hardware_list; diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c index b106839ad81..ff80cba110d 100644 --- a/arch/m68k/q40/q40ints.c +++ b/arch/m68k/q40/q40ints.c @@ -46,7 +46,6 @@ irqreturn_t q40_irq2_handler (int, void *, struct pt_regs *fp); static irqreturn_t q40_defhand (int irq, void *dev_id, struct pt_regs *fp); -static irqreturn_t default_handler(int lev, void *dev_id, struct pt_regs *regs); #define DEVNAME_SIZE 24 @@ -415,22 +414,6 @@ static irqreturn_t q40_defhand (int irq, void *dev_id, struct pt_regs *fp) else master_outb(-1,KEYBOARD_UNLOCK_REG); return IRQ_NONE; } -static irqreturn_t default_handler(int lev, void *dev_id, struct pt_regs *regs) -{ - printk ("Uninitialised interrupt level %d\n", lev); - return IRQ_NONE; -} - -irqreturn_t (*q40_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = { - [0] = default_handler, - [1] = default_handler, - [2] = default_handler, - [3] = default_handler, - [4] = default_handler, - [5] = default_handler, - [6] = default_handler, - [7] = default_handler -}; void q40_enable_irq (unsigned int irq) diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c index 2a8af685926..2641597c654 100644 --- a/drivers/block/amiflop.c +++ b/drivers/block/amiflop.c @@ -64,6 +64,7 @@ #include <linux/buffer_head.h> #include <linux/blkdev.h> #include <linux/elevator.h> +#include <linux/interrupt.h> #include <asm/setup.h> #include <asm/uaccess.h> diff --git a/include/asm-m68k/atari_stdma.h b/include/asm-m68k/atari_stdma.h index 64f92880ce4..b4eadf85273 100644 --- a/include/asm-m68k/atari_stdma.h +++ b/include/asm-m68k/atari_stdma.h @@ -3,7 +3,7 @@ #define _atari_stdma_h -#include <asm/irq.h> +#include <linux/interrupt.h> /***************************** Prototypes *****************************/ diff --git a/include/asm-m68k/irq.h b/include/asm-m68k/irq.h index 320a084bbd1..7fa8733bb4c 100644 --- a/include/asm-m68k/irq.h +++ b/include/asm-m68k/irq.h @@ -1,7 +1,8 @@ #ifndef _M68K_IRQ_H_ #define _M68K_IRQ_H_ -#include <linux/interrupt.h> +#include <linux/hardirq.h> +#include <linux/spinlock_types.h> /* * # of m68k auto vector interrupts @@ -81,7 +82,7 @@ extern void (*disable_irq)(unsigned int); struct pt_regs; extern int cpu_request_irq(unsigned int, - irqreturn_t (*)(int, void *, struct pt_regs *), + int (*)(int, void *, struct pt_regs *), unsigned long, const char *, void *); extern void cpu_free_irq(unsigned int, void *); @@ -103,23 +104,35 @@ extern void cpu_free_irq(unsigned int, void *); * interrupt source (if it supports chaining). */ typedef struct irq_node { - irqreturn_t (*handler)(int, void *, struct pt_regs *); - unsigned long flags; + int (*handler)(int, void *, struct pt_regs *); void *dev_id; - const char *devname; struct irq_node *next; + unsigned long flags; + const char *devname; } irq_node_t; /* * This structure has only 4 elements for speed reasons */ typedef struct irq_handler { - irqreturn_t (*handler)(int, void *, struct pt_regs *); + int (*handler)(int, void *, struct pt_regs *); unsigned long flags; void *dev_id; const char *devname; } irq_handler_t; +struct irq_controller { + const char *name; + spinlock_t lock; + int (*startup)(unsigned int irq); + void (*shutdown)(unsigned int irq); + void (*enable)(unsigned int irq); + void (*disable)(unsigned int irq); +}; + +extern int m68k_irq_startup(unsigned int); +extern void m68k_irq_shutdown(unsigned int); + /* count of spurious interrupts */ extern volatile unsigned int num_spurious; |