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xemu/hw/intc
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Cédric Le Goater cdd4de68ed ppc/xive: notify the CPU when the interrupt priority is more privileged 
After the event data was enqueued in the O/S Event Queue, the IVPE
raises the bit corresponding to the priority of the pending interrupt
in the register IBP (Interrupt Pending Buffer) to indicate there is an
event pending in one of the 8 priority queues. The Pending Interrupt
Priority Register (PIPR) is also updated using the IPB. This register
represent the priority of the most favored pending notification.

The PIPR is then compared to the the Current Processor Priority
Register (CPPR). If it is more favored (numerically less than), the
CPU interrupt line is raised and the EO bit of the Notification Source
Register (NSR) is updated to notify the presence of an exception for
the O/S. The check needs to be done whenever the PIPR or the CPPR are
changed.

The O/S acknowledges the interrupt with a special load in the Thread
Interrupt Management Area. If the EO bit of the NSR is set, the CPPR
takes the value of PIPR. The bit number in the IBP corresponding to
the priority of the pending interrupt is reseted and so is the EO bit
of the NSR.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[dwg: Fix style nits]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
 		2018-12-21 09:37:33 +11:00
..
Makefile.objs ppc/xive: introduce a XIVE interrupt source model 2018-12-21 09:24:23 +11:00
allwinner-a10-pic.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
apic.c Rename cpu_physical_memory_write_rom() to address_space_write_rom() 2018-12-14 13:30:48 +00:00
apic_common.c migration: pre_save return int 2017-09-27 11:35:59 +01:00
arm_gic.c hw/intc/arm_gic: Drop GIC_BASE_IRQ macro 2018-09-25 15:13:24 +01:00
arm_gic_common.c hw/intc/arm_gic: Drop GIC_BASE_IRQ macro 2018-09-25 15:13:24 +01:00
arm_gic_kvm.c intc/arm_gic: Add the virtualization extensions to the GIC state 2018-08-14 17:17:20 +01:00
arm_gicv2m.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
arm_gicv3.c hw/intc/arm_gicv3: Introduce redist-region-count array property 2018-06-22 13:28:36 +01:00
arm_gicv3_common.c hw/intc/arm_gicv3_common: Move gicd shift bug handling to gicv3_post_load 2018-08-06 16:19:33 +01:00
arm_gicv3_cpuif.c target/arm: Introduce arm_hcr_el2_eff 2018-12-13 14:41:24 +00:00
arm_gicv3_dist.c hw/intc/arm_gicv3: fix an extra left-shift when reading IPRIORITYR 2018-06-22 13:28:34 +01:00
arm_gicv3_its_common.c hw/intc/arm_gicv3: Make reserved register addresses RAZ/WI 2018-01-11 13:25:40 +00:00
arm_gicv3_its_kvm.c hw/intc/arm_gicv3_its: downgrade error_report to warn_report in kvm_arm_its_reset 2018-08-20 11:24:31 +01:00
arm_gicv3_kvm.c hw/intc/arm_gicv3_kvm: Get prepared to handle multiple redist regions 2018-06-22 13:28:36 +01:00
arm_gicv3_redist.c hw/intc/arm_gicv3: fix an extra left-shift when reading IPRIORITYR 2018-06-22 13:28:34 +01:00
armv7m_nvic.c target/arm: Move some system registers into a substructure 2018-10-24 07:50:16 +01:00
aspeed_vic.c hw: Clean up includes 2016-06-07 18:19:23 +03:00
bcm2835_ic.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
bcm2836_control.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
etraxfs_pic.c qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
exynos4210_combiner.c hw/intc: QOM'ify exynos4210_combiner.c 2016-05-12 13:22:24 +01:00
exynos4210_gic.c hw/intc/exynos4210_gic: Turn instance_init into realize function 2018-07-23 15:21:27 +01:00
gic_internal.h hw/intc/arm_gic: Drop GIC_BASE_IRQ macro 2018-09-25 15:13:24 +01:00
gicv3_internal.h target-arm: Add GICv3CPUState in CPUARMState struct 2017-02-28 17:10:00 +00:00
grlib_irqmp.c sparc/leon3 irqmp: fix IRQ software ack 2018-01-24 19:19:50 +00:00
heathrow_pic.c heathrow: remove obsolete heathow_init() function 2018-04-27 18:05:22 +10:00
i8259.c qdev: use device_class_set_parent_realize/unrealize/reset() 2018-02-05 13:54:38 +01:00
i8259_common.c i8259: move TYPE_INTERRUPT_STATS_PROVIDER upper 2017-12-21 09:30:32 +01:00
imx_avic.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
imx_gpcv2.c i.MX: Add code to emulate GPCv2 IP block 2018-02-09 10:40:30 +00:00
intc.c intc: add an interface to gather statistics/informations on interrupt controllers 2016-10-04 10:00:25 +02:00
ioapic.c ioapic: Fix error handling in realize() 2018-10-19 14:51:34 +02:00
ioapic_common.c ioapic: support "info irq" 2018-06-28 19:05:37 +02:00
lm32_pic.c misc: drop old i386 dependency 2017-12-18 17:07:03 +03:00
mips_gic.c hw/mips_gic: Update pin state on mask changes 2017-02-21 22:24:58 +00:00
nios2_iic.c qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
omap_intc.c Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
ompic.c openrisc/ompic: Add OpenRISC Multicore PIC (OMPIC) 2017-10-21 06:35:47 +09:00
openpic.c openpic: move OpenPIC state and related definitions to openpic.h 2018-03-06 13:16:29 +11:00
openpic_kvm.c openpic_kvm: drop address_space_to_flatview call 2018-03-06 14:01:27 +01:00
pl190.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
puv3_intc.c intc/puv3_intc: Convert sysbus init function to realize function 2018-12-13 13:47:59 +00:00
realview_gic.c hw/*/realview: Fix introspection problem with 'realview_mpcore' & 'realview_gic' 2018-07-17 13:12:49 +01:00
s390_flic.c qmp: expose s390-specific CPU info 2018-02-26 12:55:26 +01:00
s390_flic_kvm.c vmstate: constify VMStateField 2018-11-27 15:35:15 +01:00
sh_intc.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
slavio_intctl.c sun4m: remove include/hw/sparc/sun4m.h and all references to it 2018-01-09 21:48:20 +00:00
trace-events nvic: Expose NMI line 2018-08-20 11:24:33 +01:00
vgic_common.h intc/gic: Extract some reusable vGIC code 2015-09-24 01:29:36 +01:00
xics.c error: Fix use of error_prepend() with &error_fatal, &error_abort 2018-10-19 14:51:34 +02:00
xics_kvm.c Use error_fatal to simplify obvious fatal errors (again) 2018-10-19 14:51:34 +02:00
xics_pnv.c ppc/xics: introduce ICP DeviceRealize and DeviceReset handlers 2018-07-03 09:56:51 +10:00
xics_spapr.c Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
xilinx_intc.c hw/intc: Clean up includes 2016-01-29 15:07:24 +00:00
xive.c ppc/xive: notify the CPU when the interrupt priority is more privileged 2018-12-21 09:37:33 +11:00
xlnx-pmu-iomod-intc.c xlnx-pmu-iomod-intc: Add the PMU Interrupt controller 2018-01-26 11:09:09 +01:00
xlnx-zynqmp-ipi.c xlnx-zynqmp-ipi: Initial version of the Xilinx IPI device 2018-01-26 11:09:09 +01:00