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linux/drivers/irqchip/irq-riscv-aplic-main.h

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irqchip: Add RISC-V advanced PLIC driver for direct-mode The RISC-V advanced interrupt architecture (AIA) specification defines advanced platform-level interrupt controller (APLIC) which has two modes of operation: 1) Direct mode and 2) MSI mode. (For more details, refer https://github.com/riscv/riscv-aia) In APLIC direct-mode, wired interrupts are forwared to CPUs (or HARTs) as a local external interrupt. Add a platform irqchip driver for the RISC-V APLIC direct-mode to support RISC-V platforms having only wired interrupts. 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/20240307140307.646078-7-apatel@ventanamicro.com
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2021 Western Digital Corporation or its affiliates.
* Copyright (C) 2022 Ventana Micro Systems Inc.
*/
#ifndef _IRQ_RISCV_APLIC_MAIN_H
#define _IRQ_RISCV_APLIC_MAIN_H
#include <linux/device.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/fwnode.h>
#define APLIC_DEFAULT_PRIORITY 1
struct aplic_msicfg {
phys_addr_t base_ppn;
u32 hhxs;
u32 hhxw;
u32 lhxs;
u32 lhxw;
};
struct aplic_priv {
struct device *dev;
u32 gsi_base;
u32 nr_irqs;
u32 nr_idcs;
irqchip/riscv-aplic: Add ACPI support Add ACPI support in APLIC drivers. Use the mapping created early during boot to get the details about the APLIC. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org> Tested-by: Björn Töpel <bjorn@rivosinc.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Link: https://patch.msgid.link/20240812005929.113499-17-sunilvl@ventanamicro.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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u32 acpi_aplic_id;
irqchip: Add RISC-V advanced PLIC driver for direct-mode The RISC-V advanced interrupt architecture (AIA) specification defines advanced platform-level interrupt controller (APLIC) which has two modes of operation: 1) Direct mode and 2) MSI mode. (For more details, refer https://github.com/riscv/riscv-aia) In APLIC direct-mode, wired interrupts are forwared to CPUs (or HARTs) as a local external interrupt. Add a platform irqchip driver for the RISC-V APLIC direct-mode to support RISC-V platforms having only wired interrupts. 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/20240307140307.646078-7-apatel@ventanamicro.com
2024-03-07 07:03:04 -07:00
void __iomem *regs;
struct aplic_msicfg msicfg;
};
void aplic_irq_unmask(struct irq_data *d);
void aplic_irq_mask(struct irq_data *d);
int aplic_irq_set_type(struct irq_data *d, unsigned int type);
int aplic_irqdomain_translate(struct irq_fwspec *fwspec, u32 gsi_base,
unsigned long *hwirq, unsigned int *type);
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);
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
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#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
irqchip: Add RISC-V advanced PLIC driver for direct-mode The RISC-V advanced interrupt architecture (AIA) specification defines advanced platform-level interrupt controller (APLIC) which has two modes of operation: 1) Direct mode and 2) MSI mode. (For more details, refer https://github.com/riscv/riscv-aia) In APLIC direct-mode, wired interrupts are forwared to CPUs (or HARTs) as a local external interrupt. Add a platform irqchip driver for the RISC-V APLIC direct-mode to support RISC-V platforms having only wired interrupts. 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/20240307140307.646078-7-apatel@ventanamicro.com
2024-03-07 07:03:04 -07:00
#endif
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