diff mbox series

[v6,22/23] docs/system: riscv: Document AIA options for virt machine

Message ID 20211230123539.52786-23-anup@brainfault.org (mailing list archive)
State New, archived
Headers show
Series QEMU RISC-V AIA support | expand

Commit Message

Anup Patel Dec. 30, 2021, 12:35 p.m. UTC 
From: Anup Patel <anup.patel@wdc.com>

We have two new machine options "aia" and "aia-guests" available
for the RISC-V virt machine so let's document these options.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 docs/system/riscv/virt.rst | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Comments

Frank Chang Jan. 12, 2022, 1:23 p.m. UTC | #1 
Anup Patel <anup@brainfault.org> 於 2021年12月30日 週四 下午9:03寫道：

> From: Anup Patel <anup.patel@wdc.com>
>
> We have two new machine options "aia" and "aia-guests" available
> for the RISC-V virt machine so let's document these options.
>
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
> Signed-off-by: Anup Patel <anup@brainfault.org>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> ---
>  docs/system/riscv/virt.rst | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst
> index fa016584bf..373645513a 100644
> --- a/docs/system/riscv/virt.rst
> +++ b/docs/system/riscv/virt.rst
> @@ -63,6 +63,22 @@ The following machine-specific options are supported:
>    When this option is "on", ACLINT devices will be emulated instead of
>    SiFive CLINT. When not specified, this option is assumed to be "off".
>
> +- aia=[none|aplic|aplic-imsic]
> +
> +  This option allows selecting interrupt controller defined by the AIA
> +  (advanced interrupt architecture) specification. The "aia=aplic" selects
> +  APLIC (advanced platform level interrupt controller) to handle wired
> +  interrupts whereas the "aia=aplic-imsic" selects APLIC and IMSIC
> (incoming
> +  message signaled interrupt controller) to handle both wired interrupts
> and
> +  MSIs. When not specified, this option is assumed to be "none" which
> selects
> +  SiFive PLIC to handle wired interrupts.
> +
> +- aia-guests=nnn
> +
> +  The number of per-HART VS-level AIA IMSIC pages to be emulated for a
> guest
> +  having AIA IMSIC (i.e. "aia=aplic-imsic" selected). When not specified,
> +  the default number of per-HART VS-level AIA IMSIC pages is 0.
> +
>  Running Linux kernel
>  --------------------
>
> --
> 2.25.1
>
>
>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
diff mbox series

Patch

diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst
index fa016584bf..373645513a 100644
--- a/docs/system/riscv/virt.rst
+++ b/docs/system/riscv/virt.rst
@@ -63,6 +63,22 @@  The following machine-specific options are supported:
   When this option is "on", ACLINT devices will be emulated instead of
   SiFive CLINT. When not specified, this option is assumed to be "off".
 
+- aia=[none|aplic|aplic-imsic]
+
+  This option allows selecting interrupt controller defined by the AIA
+  (advanced interrupt architecture) specification. The "aia=aplic" selects
+  APLIC (advanced platform level interrupt controller) to handle wired
+  interrupts whereas the "aia=aplic-imsic" selects APLIC and IMSIC (incoming
+  message signaled interrupt controller) to handle both wired interrupts and
+  MSIs. When not specified, this option is assumed to be "none" which selects
+  SiFive PLIC to handle wired interrupts.
+
+- aia-guests=nnn
+
+  The number of per-HART VS-level AIA IMSIC pages to be emulated for a guest
+  having AIA IMSIC (i.e. "aia=aplic-imsic" selected). When not specified,
+  the default number of per-HART VS-level AIA IMSIC pages is 0.
+
 Running Linux kernel
 --------------------