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Linux Kernel
3.7.1
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Linux Kernel
3.7.1
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Go to the source code of this file.
Macros | |
| #define | NR_IRQS 512 |
| #define | NO_IRQ_IGNORE ((unsigned int)-1) |
| #define | irq_demux(irq) sh_mv.mv_irq_demux(irq) |
| #define | irq_ctx_init(cpu) do { } while (0) |
| #define | irq_ctx_exit(cpu) do { } while (0) |
| #define | irq_lookup(irq) (irq) |
| #define | irq_finish(irq) do { } while (0) |
Functions | |
| void | make_maskreg_irq (unsigned int irq) |
| void | init_IRQ_pint (void) |
| void | make_imask_irq (unsigned int irq) |
| void | init_IRQ (void) |
| void | migrate_irqs (void) |
| asmlinkage int | do_IRQ (unsigned int irq, struct pt_regs *regs) |
Variables | |
| unsigned short * | irq_mask_register |
| asmlinkage int do_IRQ | ( | unsigned int | irq, |
| struct pt_regs * | regs | ||
| ) |
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.
Definition at line 109 of file irq_alpha.c.
| unsigned short* irq_mask_register |
1.8.2