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irqchip/gic-v3: Add EPPI range support

Expand the pre-existing PPI support to be able to deal with the Extended PPI range (EPPI). This includes obtaining the number of PPIs from each individual redistributor, and compute the minimum set (just in case someone builds something really clever...).

Marc Zyngier committed 7 years ago

Commit 5f51f801 parent 4b049062 files · +47 −7Browse files

Showing the changes to include/linux (1 of 2 files). Show all

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include/linux/irqchip/arm-gic-v3.h+12−0
@@ -124,6 +124,18 @@ · 123 unmodified lines
124 124
125#define GICR_TYPER_CPU_NUMBER(r) (((r) >> 8) & 0xffff)125#define GICR_TYPER_CPU_NUMBER(r) (((r) >> 8) & 0xffff)
126 126
127#define EPPI_BASE_INTID 1056
128
129#define GICR_TYPER_NR_PPIS(r) \
130 ({ \
131 unsigned int __ppinum = ((r) >> 27) & 0x1f; \
132 unsigned int __nr_ppis = 16; \
133 if (__ppinum == 1 || __ppinum == 2) \
134 __nr_ppis += __ppinum * 32; \
135 \
136 __nr_ppis; \
137 })
138
127#define GICR_WAKER_ProcessorSleep (1U << 1)139#define GICR_WAKER_ProcessorSleep (1U << 1)
128#define GICR_WAKER_ChildrenAsleep (1U << 2)140#define GICR_WAKER_ChildrenAsleep (1U << 2)
129 141

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