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Linux Kernel
3.7.1
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Linux Kernel
3.7.1
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#include <linux/interrupt.h>#include <linux/init.h>#include <linux/of.h>#include <linux/ftrace.h>#include <linux/irq.h>#include <linux/export.h>#include <linux/irqdomain.h>#include <linux/irqflags.h>Go to the source code of this file.
Functions | |
| unsigned long | arch_local_save_flags (void) |
| EXPORT_SYMBOL (arch_local_save_flags) | |
| void | arch_local_irq_restore (unsigned long flags) |
| EXPORT_SYMBOL (arch_local_irq_restore) | |
| void __init | init_IRQ (void) |
| void __irq_entry | do_IRQ (struct pt_regs *regs) |
| EXPORT_SYMBOL | ( | arch_local_save_flags | ) |
| EXPORT_SYMBOL | ( | arch_local_irq_restore | ) |
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.
1.8.2