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da6d674e50
qemu-e2k/hw/intc
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Michael Davidsaver da6d674e50 armv7m: Rewrite NVIC to not use any GIC code 
Despite some superficial similarities of register layout, the
M-profile NVIC is really very different from the A-profile GIC.
Our current attempt to reuse the GIC code means that we have
significant bugs in our NVIC.

Implement the NVIC as an entirely separate device, to give
us somewhere we can get the behaviour correct.

This initial commit does not attempt to implement exception
priority escalation, since the GIC-based code didn't either.
It does fix a few bugs in passing:
 * ICSR.RETTOBASE polarity was wrong and didn't account for
   internal exceptions
 * ICSR.VECTPENDING was 16 too high if the pending exception
   was for an external interrupt
 * UsageFault, BusFault and MemFault were not disabled on reset
   as they are supposed to be

Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
[PMM: reworked, various bugs and stylistic cleanups]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2017-02-28 12:08:17 +00:00
..
allwinner-a10-pic.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
apic_common.c apic: reset apic_delivered global variable on machine reset 2017-02-16 14:06:55 +01:00
apic.c apic: add send_msi() to APICCommonClass 2016-10-17 15:44:49 -02:00
arm_gic_common.c hw/intc/arm_gic: Add external IRQ lines for VIRQ and VFIQ 2017-01-20 11:15:09 +00:00
arm_gic_kvm.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
arm_gic.c nvic: set pending status for not active interrupts 2016-11-07 10:00:24 +00:00
arm_gicv2m.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
arm_gicv3_common.c hw/intc/gicv3: Add data fields for virtualization support 2017-01-20 11:15:09 +00:00
arm_gicv3_cpuif.c tcg: drop global lock during TCG code execution 2017-02-24 10:32:45 +00:00
arm_gicv3_dist.c hw/intc/arm_gicv3: Fix compilation with simple trace backend 2016-06-20 11:35:15 +01:00
arm_gicv3_its_common.c hw/intc/arm_gicv3_its: Implement ITS base class 2016-10-04 13:28:08 +01:00
arm_gicv3_its_kvm.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
arm_gicv3_kvm.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
arm_gicv3_redist.c arm_gicv3: Add assert()s to tell Coverity that offsets are aligned 2016-07-19 17:56:27 +01:00
arm_gicv3.c hw/intc/arm_gicv3: Don't signal Pending+Active interrupts to CPU 2016-12-27 14:59:25 +00:00
armv7m_nvic.c armv7m: Rewrite NVIC to not use any GIC code 2017-02-28 12:08:17 +00:00
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 hw/intc: QOM'ify etraxfs_pic.c 2016-05-12 13:22:24 +01:00
exynos4210_combiner.c hw/intc: QOM'ify exynos4210_combiner.c 2016-05-12 13:22:24 +01:00
exynos4210_gic.c migration: consolidate VMStateField.start 2017-02-13 17:27:13 +00:00
gic_internal.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
gicv3_internal.h hw/intc/gicv3: Add defines for ICH system register fields 2017-01-20 11:15:09 +00:00
grlib_irqmp.c hw/intc: QOM'ify grlib_irqmp.c 2016-05-12 13:22:25 +01:00
heathrow_pic.c hw/intc: Clean up includes 2016-01-29 15:07:24 +00:00
i8259_common.c i8259: give ISA device when registering ISA ioports 2016-10-04 10:00:26 +02:00
i8259.c intc: make HMP 'info irq' and 'info pic' commands use InterruptStatsProvider interface 2016-10-04 10:00:25 +02:00
imx_avic.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
intc.c intc: add an interface to gather statistics/informations on interrupt controllers 2016-10-04 10:00:25 +02:00
ioapic_common.c x86: ioapic: dump version for "info ioapic" 2017-01-16 17:52:35 +01:00
ioapic.c ioapic: fix error report value of def version 2017-02-16 14:06:55 +01:00
lm32_pic.c intc: make HMP 'info irq' and 'info pic' commands use InterruptStatsProvider interface 2016-10-04 10:00:25 +02:00
Makefile.objs nios2: Add IIC interrupt controller emulation 2017-01-24 13:10:35 -08:00
mips_gic.c hw/mips_gic: Update pin state on mask changes 2017-02-21 22:24:58 +00:00
nios2_iic.c nios2: Add IIC interrupt controller emulation 2017-01-24 13:10:35 -08:00
omap_intc.c hw/intc: QOM'ify omap_intc.c 2016-05-12 13:22:25 +01:00
openpic_kvm.c qemu-common: push cpu.h inclusion out of qemu-common.h 2016-05-19 16:42:29 +02:00
openpic.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
pl190.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
puv3_intc.c unicore: Clean up includes 2016-01-29 15:07:22 +00:00
realview_gic.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
s390_flic_kvm.c s390x/flic: fail migration on source already 2017-02-24 10:15:18 +01:00
s390_flic.c s390x: add property adapter_routes_max_batch 2017-02-24 10:15:18 +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 intc: make HMP 'info irq' and 'info pic' commands use InterruptStatsProvider interface 2016-10-04 10:00:25 +02:00
trace-events armv7m: Rewrite NVIC to not use any GIC code 2017-02-28 12:08:17 +00:00
vgic_common.h intc/gic: Extract some reusable vGIC code 2015-09-24 01:29:36 +01:00
xics_kvm.c ppc/xics: add a xics_set_nr_servers common routine 2016-10-28 09:36:58 +11:00
xics_spapr.c pseries: Move construction of /interrupt-controller fdt node 2016-10-28 09:38:26 +11:00
xics.c ppc/xics: change the icp_ routines API to use an 'ICPState *' argument 2016-10-28 09:36:58 +11:00
xilinx_intc.c hw/intc: Clean up includes 2016-01-29 15:07:24 +00:00