3 Commits

Author SHA1 Message Date
Anup Patel
35d77eb7b9 irqchip/riscv-imsic: Fix boot time update effective affinity warning
Currently, the following warning is observed on the QEMU virt machine:
genirq: irq_chip APLIC-MSI-d000000.aplic did not update eff. affinity mask of irq 12

The above warning is because the IMSIC driver does not set the initial
value of effective affinity in the interrupt descriptor. To address this,
initialize the effective affinity in imsic_irq_domain_alloc().

Fixes: 027e125acdba ("irqchip/riscv-imsic: Add device MSI domain support for platform devices")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240413065210.315896-1-apatel@ventanamicro.com
2024-04-14 13:28:49 +02:00
Anup Patel
5c5a71d043 irqchip/riscv-imsic: Add device MSI domain support for PCI devices
The Linux PCI framework supports per-device MSI domains for PCI devices
so extend the IMSIC driver to allow PCI per-device MSI domains.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/r/20240307140307.646078-5-apatel@ventanamicro.com
2024-03-25 17:38:28 +01:00
Anup Patel
027e125acd irqchip/riscv-imsic: Add device MSI domain support for platform devices
The Linux platform MSI support allows per-device MSI domains so add
a platform irqchip driver for RISC-V IMSIC which provides a base IRQ
domain with MSI parent support for platform device domains.

The IMSIC platform driver assumes that the IMSIC state is already
initialized by the IMSIC early driver.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/r/20240307140307.646078-4-apatel@ventanamicro.com
2024-03-25 17:38:28 +01:00