diff options
| author | Anup Patel <apatel@ventanamicro.com> | 2024-03-07 19:33:05 +0530 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-03-25 17:38:29 +0100 |
| commit | ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 (patch) | |
| tree | 69249e22caf0efc1419b39a47b12b68f9c86a567 /drivers/irqchip/irq-riscv-aplic-main.h | |
| parent | 2333df5ae51ead2188d07c99e841e159a664741e (diff) | |
irqchip/riscv-aplic: Add support for MSI-mode
The RISC-V advanced platform-level interrupt controller (APLIC) has
two modes of operation: 1) Direct mode and 2) MSI mode.
(For more details, refer https://github.com/riscv/riscv-aia)
In APLIC MSI-mode, wired interrupts are forwared as message signaled
interrupts (MSIs) to CPUs via IMSIC.
Extend the existing APLIC irqchip driver to support MSI-mode for
RISC-V platforms having both wired interrupts and MSIs.
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/20240307140307.646078-8-apatel@ventanamicro.com
Diffstat (limited to 'drivers/irqchip/irq-riscv-aplic-main.h')
| -rw-r--r-- | drivers/irqchip/irq-riscv-aplic-main.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-riscv-aplic-main.h b/drivers/irqchip/irq-riscv-aplic-main.h index 4cfbadf37ddc..4393927d8c80 100644 --- a/drivers/irqchip/irq-riscv-aplic-main.h +++ b/drivers/irqchip/irq-riscv-aplic-main.h @@ -40,5 +40,13 @@ int aplic_irqdomain_translate(struct irq_fwspec *fwspec, u32 gsi_base, void aplic_init_hw_global(struct aplic_priv *priv, bool msi_mode); int aplic_setup_priv(struct aplic_priv *priv, struct device *dev, void __iomem *regs); int aplic_direct_setup(struct device *dev, void __iomem *regs); +#ifdef CONFIG_RISCV_APLIC_MSI +int aplic_msi_setup(struct device *dev, void __iomem *regs); +#else +static inline int aplic_msi_setup(struct device *dev, void __iomem *regs) +{ + return -ENODEV; +} +#endif #endif |