[Qemu-devel] [PATCH v3 0/3] mips: add Global Interrupt Controller

[Yongbok Kim]

This patchset implement MIPS Global Interrupt Controller.

The Global Interrupt Controller (GIC) is responsible for mapping each
internal and external interrupt to the correct location for servicing.

Limitation:
Level triggering only
GIC CounterHi not implemented (Countbits = 32bits)
DINT not implemented
Local WatchDog, Fast Debug Channel, Perf Counter not implemented

It is based on the earlier un-merged GIC implementation.
https://lists.gnu.org/archive/html/qemu-devel/2013-03/msg00194.html

For more information, 
http://imgtec.com/mips/warrior/p-class-p5600-multiprocessor-core/
http://imgtec.com/mips/warrior/i-class-i6400-multiprocessor-core/

v3:
* rebased to top of CPS changes
* removed GCR from the patchset as CPS patchset includes it
* added checking boundaries
* fixed racy code (James)
* split gic interval timer into separate file hw/timer/mips_gictimer.c
* updated review comments (James, Leon)
* cosmetic changes

v2:
* added user mode section (James)
* moved mips_gic.c into hw/intc, mips_gcr.c into hw/misc (PeterM, PeterC)
* renamed obvious duplications (Leon)
* renamed gic_irqs into irq_state (Leon)
* removed pointer to gic IRQs from env (Leon)
* fixed loading target_ulong CMGCRBase (Leon)
* removed unimplemented registers (Leon)
* fixed writing to wedge register (Leon)
* removed magic numbers
* updated usage of map_vp to indicate not mapped
* cosmetic changes and other review comments

Leon Alrae (1):
  hw/mips/cps: create GIC block inside CPS

Yongbok Kim (2):
  hw/mips: implement GIC Interval Timer
  hw/mips: implement Global Interrupt Controller

 hw/intc/Makefile.objs            |    1 +
 hw/intc/mips_gic.c               |  459 ++++++++++++++++++++++++++++++++++++++
 hw/mips/cps.c                    |   25 ++-
 hw/mips/mips_malta.c             |    4 +-
 hw/misc/mips_cmgcr.c             |   33 +++
 hw/timer/Makefile.objs           |    1 +
 hw/timer/mips_gictimer.c         |  141 ++++++++++++
 include/hw/intc/mips_gic.h       |  215 ++++++++++++++++++
 include/hw/mips/cps.h            |    2 +
 include/hw/misc/mips_cmgcr.h     |    9 +
 include/hw/timer/mips_gictimer.h |   46 ++++
 11 files changed, 926 insertions(+), 10 deletions(-)
 create mode 100644 hw/intc/mips_gic.c
 create mode 100644 hw/timer/mips_gictimer.c
 create mode 100644 include/hw/intc/mips_gic.h
 create mode 100644 include/hw/timer/mips_gictimer.h