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[ Upstream commit 999f458c1771354371ba367dd84f55f9a62a4233 ]
The IMSIC driver assigns the IMSIC domain specific imsic_irq_set_affinity()
callback to the per device leaf MSI domain. That's a layering violation as
it is called with the leaf domain data and not with the IMSIC domain
data. This prevents moving the IMSIC driver to the common MSI library which
uses the generic msi_domain_set_affinity() callback for device MSI domains.
Instead of using imsic_irq_set_affinity() for leaf MSI domains, use
imsic_irq_set_affinity() for the non-leaf IMSIC base domain and use
irq_chip_set_affinity_parent() for leaf MSI domains.
[ tglx: Massaged change log ]
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250217085657.789309-2-apatel@ventanamicro.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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The "per-CPU IDs ... at base ..." info log is outputting a physical
address, not a PPN.
Fixes: 027e125acdba ("irqchip/riscv-imsic: Add device MSI domain support for platform devices")
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/all/20240909085610.46625-2-ajones@ventanamicro.com
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RISC-V IMSIC interrupt controller provides IPI and MSI support.
Currently, DT based drivers setup the IPI feature early during boot but
defer setting up the MSI functionality. However, in ACPI systems, PCI
subsystem is probed early and assume MSI controller is already setup.
Hence, both IPI and MSI features need to be initialized early itself.
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/20240812005929.113499-16-sunilvl@ventanamicro.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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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
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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
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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
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