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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-09 15:06:31 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-09 15:06:31 (GMT) |
commit | d9a9a23ff2b00463f25e880d13364938b321ab8a (patch) | |
tree | e5ddb542d535ea741227265545a885636f8967aa /arch/powerpc/platforms/cell/interrupt.c | |
parent | 9b013c2820c409ff84871e55e407ec2181782773 (diff) | |
parent | 53962ecf6ebbdb5b15a8b35fbefe34430eb25609 (diff) | |
download | linux-fsl-qoriq-d9a9a23ff2b00463f25e880d13364938b321ab8a.tar.xz |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (23 commits)
[POWERPC] Remove leftover printk in isa-bridge.c
[POWERPC] Remove duplicate #include
[POWERPC] Initialize lockdep earlier
[POWERPC] Document when printk is useable
[POWERPC] Fix bogus paca->_current initialization
[POWERPC] Fix of_i2c include for module compilation
[POWERPC] Make default cputable entries reflect selected CPU family
[POWERPC] spufs: lockdep annotations for spufs_dir_close
[POWERPC] spufs: don't requeue victim contex in find_victim if it's not in spu_run
[POWERPC] 4xx: Fix PCI mem in sequoia DTS
[POWERPC] 4xx: Add endpoint support to 4xx PCIe driver
[POWERPC] 4xx: Fix problem with new TLB storage attibute fields on 440x6 core
[POWERPC] spufs: spu_create should send inotify IM_CREATE event
[POWERPC] spufs: handle faults while the context switch pending flag is set
[POWERPC] spufs: fix concurrent delivery of class 0 & 1 exceptions
[POWERPC] spufs: try to route SPU interrupts to local node
[POWERPC] spufs: set SPU_CONTEXT_SWITCH_PENDING before synchronising SPU irqs
[POWERPC] spufs: don't acquire state_mutex interruptible while performing callback
[POWERPC] spufs: update master runcntl with context lock held
[POWERPC] spufs: fix post-stopped update of MFC_CNTL register
...
Diffstat (limited to 'arch/powerpc/platforms/cell/interrupt.c')
-rw-r--r-- | arch/powerpc/platforms/cell/interrupt.c | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c index 04f74f9..5bf7df1 100644 --- a/arch/powerpc/platforms/cell/interrupt.c +++ b/arch/powerpc/platforms/cell/interrupt.c @@ -35,6 +35,7 @@ #include <linux/percpu.h> #include <linux/types.h> #include <linux/ioport.h> +#include <linux/kernel_stat.h> #include <asm/io.h> #include <asm/pgtable.h> @@ -231,6 +232,54 @@ static int iic_host_match(struct irq_host *h, struct device_node *node) "IBM,CBEA-Internal-Interrupt-Controller"); } +extern int noirqdebug; + +static void handle_iic_irq(unsigned int irq, struct irq_desc *desc) +{ + const unsigned int cpu = smp_processor_id(); + + spin_lock(&desc->lock); + + desc->status &= ~(IRQ_REPLAY | IRQ_WAITING); + + /* + * If we're currently running this IRQ, or its disabled, + * we shouldn't process the IRQ. Mark it pending, handle + * the necessary masking and go out + */ + if (unlikely((desc->status & (IRQ_INPROGRESS | IRQ_DISABLED)) || + !desc->action)) { + desc->status |= IRQ_PENDING; + goto out_eoi; + } + + kstat_cpu(cpu).irqs[irq]++; + + /* Mark the IRQ currently in progress.*/ + desc->status |= IRQ_INPROGRESS; + + do { + struct irqaction *action = desc->action; + irqreturn_t action_ret; + + if (unlikely(!action)) + goto out_eoi; + + desc->status &= ~IRQ_PENDING; + spin_unlock(&desc->lock); + action_ret = handle_IRQ_event(irq, action); + if (!noirqdebug) + note_interrupt(irq, desc, action_ret); + spin_lock(&desc->lock); + + } while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING); + + desc->status &= ~IRQ_INPROGRESS; +out_eoi: + desc->chip->eoi(irq); + spin_unlock(&desc->lock); +} + static int iic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { @@ -240,10 +289,10 @@ static int iic_host_map(struct irq_host *h, unsigned int virq, break; case IIC_IRQ_TYPE_IOEXC: set_irq_chip_and_handler(virq, &iic_ioexc_chip, - handle_fasteoi_irq); + handle_iic_irq); break; default: - set_irq_chip_and_handler(virq, &iic_chip, handle_fasteoi_irq); + set_irq_chip_and_handler(virq, &iic_chip, handle_iic_irq); } return 0; } |