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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/interrupt.h>#include <linux/kernel_stat.h>#include <linux/seq_file.h>#include <asm/io.h>Go to the source code of this file.
Macros | |
| #define | SCORE_PIC ((u32 __iomem __force *)0x95F50000) |
| #define | INT_PNDL 0 |
| #define | INT_PNDH 1 |
| #define | INT_PRIORITY_M 2 |
| #define | INT_PRIORITY_SG0 4 |
| #define | INT_PRIORITY_SG1 5 |
| #define | INT_PRIORITY_SG2 6 |
| #define | INT_PRIORITY_SG3 7 |
| #define | INT_MASKL 8 |
| #define | INT_MASKH 9 |
Functions | |
| asmlinkage void | do_IRQ (int irq) |
| void __init | init_IRQ (void) |
Variables | |
| struct irq_chip | score_irq_chip |
| asmlinkage void do_IRQ | ( | int | irq | ) |
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