[v2,00/11] RISC-V IMSIC driver improvements

Message

Anup Patel Dec. 14, 2024, 5:25 p.m. UTC

This series is based on recent discussion on LKML:
https://lore.kernel.org/lkml/[e-mail]/

It primarily focuses on moving to RISC-V IMSIC driver use common MSI
lib and GENERIC_PENDING_IRQ.

PATCH1: Fix for handling non-atomic MSI updates
PATCH2 & PATCH3: Preparatory patches
PATCH4: Main patch which updates IMSIC driver to use MSI lib
PATCH5 & PATCH6: Preparatory patches for moving to GENERIC_PENDING_IRQ
PATCH7 to PATCH11: Patches use GENERIC_PENDING_IRQ in IMSIC driver

These patches can also be found in the riscv_imsic_imp_v2 branch at:
https://github.com/avpatel/linux.git

Changes since v1:
 - Changed series subject
 - Expand this series to use GENERIC_PENDING_IRQ in IMSIC driver

Andrew Jones (1):
  irqchip/riscv-imsic: Set irq_set_affinity for IMSIC base

Anup Patel (7):
  irqchip/riscv-imsic: Handle non-atomic MSI updates for device
  genirq: Introduce common irq_force_complete_move() implementation
  RISC-V: Enable GENERIC_PENDING_IRQ and GENERIC_PENDING_IRQ_CHIPFLAGS
  irqchip/riscv-imsic: Separate next and previous pointers in IMSIC
    vector
  irqchip/riscv-imsic: Implement irq_force_complete_move() for IMSIC
  irqchip/riscv-imsic: Replace hwirq with irq in the IMSIC vector
  irqchip/riscv-imsic: Use IRQCHIP_MOVE_DEFERRED flag for PCI devices

Thomas Gleixner (3):
  irqchip/irq-msi-lib: Optionally set default irq_eoi/irq_ack
  irqchip/riscv-imsic: Move to common MSI lib
  genirq: Introduce kconfig option GENERIC_PENDING_IRQ_CHIPFLAGS

 arch/riscv/Kconfig                         |   2 +
 drivers/irqchip/Kconfig                    |   8 +-
 drivers/irqchip/irq-gic-v2m.c              |   1 +
 drivers/irqchip/irq-imx-mu-msi.c           |   1 +
 drivers/irqchip/irq-msi-lib.c              |  11 +-
 drivers/irqchip/irq-mvebu-gicp.c           |   1 +
 drivers/irqchip/irq-mvebu-odmi.c           |   1 +
 drivers/irqchip/irq-mvebu-sei.c            |   1 +
 drivers/irqchip/irq-riscv-imsic-early.c    |  14 +-
 drivers/irqchip/irq-riscv-imsic-platform.c | 177 +++++++++------------
 drivers/irqchip/irq-riscv-imsic-state.c    | 110 +++++++++----
 drivers/irqchip/irq-riscv-imsic-state.h    |  12 +-
 include/linux/irq.h                        |  15 ++
 include/linux/msi.h                        |  11 ++
 kernel/irq/Kconfig                         |   4 +
 kernel/irq/chip.c                          |  39 ++++-
 kernel/irq/irqdomain.c                     |   1 +
 kernel/irq/migration.c                     |   9 ++
 18 files changed, 262 insertions(+), 156 deletions(-)