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

Anup Patel
2024-12-14T17:27:29Z

This series is based on recent discussion on LKML:
https://lore.kernel.org/lkml/20241114161845.502027-18-ajones@ventanamicro.com/

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(-)