Commit 51890613 authored by James Bottomley's avatar James Bottomley Committed by Kyle McMartin
Browse files

parisc: convert the rest of the irq handlers to simple/percpu 



The generic conversion eliminates the spurious no_ack and no_end
routines, converts all the cascaded handlers to handle_simple_irq() and
makes iosapic use a modified handle_percpu_irq() to become the same as
the CPU irq's.  This isn't an essential change, but it eliminates the
mask/unmask overhead of handle_level_irq().

Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
Tested-by: default avatarHelge Deller <deller@gmx.de>
Signed-off-by: default avatarKyle McMartin <kyle@mcmartin.ca>
parent d16cd297

arch/parisc/kernel/irq.c

+1 −4
Original line number Diff line number Diff line
@@ -75,9 +75,6 @@ static void cpu_unmask_irq(unsigned int irq) 
	smp_send_all_nop();

}



void no_ack_irq(unsigned int irq) { }

void no_end_irq(unsigned int irq) { }



void cpu_ack_irq(unsigned int irq)

{

	unsigned long mask = EIEM_MASK(irq);
@@ -241,7 +238,7 @@ int cpu_claim_irq(unsigned int irq, struct irq_chip *type, void *data) 


	/* for iosapic interrupts */

	if (type) {

		set_irq_chip_and_handler(irq, type, handle_level_irq);

		set_irq_chip_and_handler(irq, type, handle_percpu_irq);

		set_irq_chip_data(irq, data);

		cpu_unmask_irq(irq);

	}

drivers/parisc/dino.c

+0 −1
Original line number Diff line number Diff line
@@ -349,7 +349,6 @@ static struct irq_chip dino_interrupt_type = { 
	.name	= "GSC-PCI",

	.unmask	= dino_unmask_irq,

	.mask	= dino_mask_irq,

	.ack	= no_ack_irq,

};

drivers/parisc/eisa.c

+1 −2
Original line number Diff line number Diff line
@@ -186,7 +186,6 @@ static struct irq_chip eisa_interrupt_type = { 
	.name	=	"EISA",

	.unmask	=	eisa_unmask_irq,

	.mask	=	eisa_mask_irq,

	.ack	=	no_ack_irq,

};



static irqreturn_t eisa_irq(int wax_irq, void *intr_dev)
@@ -340,7 +339,7 @@ static int __init eisa_probe(struct parisc_device *dev) 
	setup_irq(2, &irq2_action);

	for (i = 0; i < 16; i++) {

		set_irq_chip_and_handler(i, &eisa_interrupt_type,

			handle_level_irq);

					 handle_simple_irq);

	}

	

	EISA_bus = 1;

drivers/parisc/gsc.c

+1 −2
Original line number Diff line number Diff line
@@ -143,7 +143,6 @@ static struct irq_chip gsc_asic_interrupt_type = { 
	.name	=	"GSC-ASIC",

	.unmask	=	gsc_asic_unmask_irq,

	.mask	=	gsc_asic_mask_irq,

	.ack	=	no_ack_irq,

};



int gsc_assign_irq(struct irq_chip *type, void *data)
@@ -153,7 +152,7 @@ int gsc_assign_irq(struct irq_chip *type, void *data) 
	if (irq > GSC_IRQ_MAX)

		return NO_IRQ;



	set_irq_chip_and_handler(irq, type, handle_level_irq);

	set_irq_chip_and_handler(irq, type, handle_simple_irq);

	set_irq_chip_data(irq, data);



	return irq++;

drivers/parisc/iosapic.c

+8 −0
Original line number Diff line number Diff line
@@ -669,6 +669,13 @@ printk("\n"); 
	DBG(KERN_DEBUG "enable_irq(%d): eoi(%p, 0x%x)\n", irq,

			vi->eoi_addr, vi->eoi_data);

	iosapic_eoi(vi->eoi_addr, vi->eoi_data);

}



static void iosapic_eoi_irq(unsigned int irq)

{

	struct vector_info *vi = get_irq_chip_data(irq);



	iosapic_eoi(vi->eoi_addr, vi->eoi_data);

	cpu_eoi_irq(irq);

}
@@ -705,6 +712,7 @@ static struct irq_chip iosapic_interrupt_type = { 
	.unmask	=	iosapic_unmask_irq,

	.mask	=	iosapic_mask_irq,

	.ack	=	cpu_ack_irq,

	.eoi	=	iosapic_eoi_irq,

#ifdef CONFIG_SMP

	.set_affinity =	iosapic_set_affinity_irq,

#endif

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