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Linux Kernel
3.7.1
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All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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Linux Kernel
3.7.1
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#include <linux/bitops.h>#include <linux/errno.h>#include <linux/init.h>#include <linux/interrupt.h>#include <linux/kernel_stat.h>#include <linux/seq_file.h>#include <linux/spinlock.h>#include <linux/types.h>#include <asm/io.h>#include <asm/smp.h>Go to the source code of this file.
Macros | |
| #define | EIEM_MASK(irq) (1UL<<(CPU_IRQ_MAX - irq)) |
Functions | |
| irqreturn_t | timer_interrupt (int, void *) |
| irqreturn_t | ipi_interrupt (int, void *) |
| void | cpu_ack_irq (struct irq_data *d) |
| void | cpu_eoi_irq (struct irq_data *d) |
| int | show_interrupts (struct seq_file *p, void *v) |
| int | cpu_claim_irq (unsigned int irq, struct irq_chip *type, void *data) |
| int | txn_claim_irq (int irq) |
| int | txn_alloc_irq (unsigned int bits_wide) |
| unsigned long | txn_affinity_addr (unsigned int irq, int cpu) |
| unsigned long | txn_alloc_addr (unsigned int virt_irq) |
| unsigned int | txn_alloc_data (unsigned int virt_irq) |
| void | do_cpu_irq_mask (struct pt_regs *regs) |
| void __init | init_IRQ (void) |
The hexagon core comes with a first-level interrupt controller with 32 total possible interrupts. When the core is embedded into different systems/platforms, it is typically wrapped by macro cells that provide one or more second-level interrupt controllers that are cascaded into one or more of the first-level interrupts handled here. The precise wiring of these other irqs varies from platform to platform, and are set up & configured in the platform-specific files.
The first-level interrupt controller is wrapped by the VM, which virtualizes the interrupt controller for us. It provides a very simple, fast & efficient API, and so the fasteoi handler is appropriate for this case.
| irqreturn_t ipi_interrupt | ( | int | , |
| void * | |||
| ) |
| irqreturn_t timer_interrupt | ( | int | , |
| void * | |||
| ) |
1.8.2