[PATCH qemu v2 0/3] Add device STM32L4x5 EXTI

[~inesvarhol]

This patch adds a new STM32L4x5 EXTI device and is part
of a series implementing the STM32L4x5 with a few peripherals.

Thank you Philippe for letting us know we're on your review list and
that you're busy.
Please take your time, in the meantime we'll make progress on more
peripherals :-)

Sincerely,
Ines Varhol

Changes from non-RFC v1 to non-RFC v2:
- correct the commit messages
- remove a misleading comment

Changes from v3 to non-RFC v1:
- separating the patch in 3 commits
- justifying in the commit message why we implement a new
model instead of changing the existing stm32f4xx_exti
- changed irq_raise to irq_pulse in register SWIERx write (in
stm32l4x5_exti_write)
to be consistent with the irq_pulse in stm32l4x5_exti_set_irq (and also
both these interrupts
are edge-triggered)
- changed the license to GPL

Changes from v2 to v3:
- adding more tests writing/reading in exti registers
- adding tests checking that interrupt work by reading NVIC registers
- correcting exti_write in SWIER (so it sets an irq only when a bit goes
from '0' to '1')
- correcting exti_set_irq (so it never writes in PR when the relevant
bit in IMR is '0')

Changes from v1 to v2:
- use arrays to deduplicate code and logic
- move internal constant EXTI_NUM_GPIO_EVENT_IN_LINES from the header
to the .c file
- Improve copyright headers
- replace static const with #define
- use the DEFINE_TYPES macro
- fill the impl and valid field of the exti's MemoryRegionOps
- fix invalid test caused by a last minute change

Based-on: <170100975340.4879.5844108484092111139-0@git.sr.ht>
([PATCH qemu 0/2] hw/arm: Add minimal support for the B-L475E-IOT01A
board)

Inès Varhol (3):
  hw/misc: Implement STM32L4x5 EXTI
  tests/qtest: Add STM32L4x5 EXTI QTest testcase
  hw/arm: Connect STM32L4x5 EXTI to STM32L4x5 SoC

 hw/arm/Kconfig                    |   1 +
 hw/arm/stm32l4x5_soc.c            |  56 +++-
 hw/misc/Kconfig                   |   3 +
 hw/misc/meson.build               |   1 +
 hw/misc/stm32l4x5_exti.c          | 299 ++++++++++++++++++
 hw/misc/trace-events              |   5 +
 include/hw/arm/stm32l4x5_soc.h    |   3 +
 include/hw/misc/stm32l4x5_exti.h  |  61 ++++
 tests/qtest/meson.build           |   5 +
 tests/qtest/stm32l4x5_exti-test.c | 485 ++++++++++++++++++++++++++++++
 10 files changed, 917 insertions(+), 2 deletions(-)
 create mode 100644 hw/misc/stm32l4x5_exti.c
 create mode 100644 include/hw/misc/stm32l4x5_exti.h
 create mode 100644 tests/qtest/stm32l4x5_exti-test.c

-- 
2.38.5