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Date: Tue, 8 Aug 2023 09:41:45 +0100
From: Conor Dooley <conor@...nel.org>
To: Sunil V L <sunilvl@...tanamicro.com>
Cc: linux-doc@...r.kernel.org, linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-acpi@...r.kernel.org, linux-pci@...r.kernel.org,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
"Rafael J . Wysocki" <rafael@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Atish Kumar Patra <atishp@...osinc.com>,
Conor Dooley <conor.dooley@...rochip.com>,
Will Deacon <will@...nel.org>, Haibo Xu <haibo1.xu@...el.com>,
Jonathan Corbet <corbet@....net>,
Marc Zyngier <maz@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Robert Moore <robert.moore@...el.com>,
Andrew Jones <ajones@...tanamicro.com>,
Albert Ou <aou@...s.berkeley.edu>,
Paul Walmsley <paul.walmsley@...ive.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Thomas Gleixner <tglx@...utronix.de>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Daniel Scally <djrscally@...il.com>,
Palmer Dabbelt <palmer@...belt.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Anup Patel <anup@...infault.org>, Len Brown <lenb@...nel.org>
Subject: Re: [RFC PATCH v1 20/21] RISC-V: ACPI: Create PLIC platform device
On Thu, Aug 03, 2023 at 11:29:15PM +0530, Sunil V L wrote:
> Since PLIC needs to be a platform device
For the unwashed, why does the PLCI need to be a platform device?
(And while you're at that, please try to make use of the extra ~20
characters per line that you can use here.)
> probe the
> MADT and create platform devices for each PLIC in the
> system. Use software node framework for the fwnode
> which allows to create properties and hence the
> actual irqchip driver doesn't need to do anything
> different for ACPI vs DT.
>
> Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
> Co-developed-by: Haibo Xu <haibo1.xu@...el.com>
> Signed-off-by: Haibo Xu <haibo1.xu@...el.com>
> +static struct fwnode_handle *acpi_plic_create_fwnode(struct acpi_madt_plic *plic)
> +{
> + struct fwnode_handle *fwnode, *parent_fwnode;
> + struct riscv_irqchip_list *plic_element;
> + struct software_node_ref_args *refs;
> + struct property_entry props[8] = {};
> + int nr_contexts;
> +
> + props[0] = PROPERTY_ENTRY_U32("riscv,gsi-base", plic->gsi_base);
> + props[1] = PROPERTY_ENTRY_U32("riscv,ndev", plic->num_irqs);
> + props[2] = PROPERTY_ENTRY_U32("riscv,max_prio", plic->max_prio);
My OCD wants to know why this gets an _ but the others have a -.
> + props[3] = PROPERTY_ENTRY_U8("riscv,plic-id", plic->id);
> + props[4] = PROPERTY_ENTRY_U64("riscv,plic-base", plic->base_addr);
> + props[5] = PROPERTY_ENTRY_U32("riscv,plic-size", plic->size);
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