From: Bin Meng <bmeng.cn@gmail.com>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: "open list:RISC-V" <qemu-riscv@nongnu.org>,
"Bin Meng" <bin.meng@windriver.com>,
"qemu-devel@nongnu.org Developers" <qemu-devel@nongnu.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Alistair Francis" <alistair23@gmail.com>
Subject: Re: [PATCH v2 2/3] hw/char/mchp_pfsoc_mmuart: Use a MemoryRegion container
Date: Sun, 26 Sep 2021 16:31:24 +0800 [thread overview]
Message-ID: <CAEUhbmXRbX8mXAKaThqic8wV_ia2wo_yQA8Og-uYhEfazrvueQ@mail.gmail.com> (raw)
In-Reply-To: <20210925133407.1259392-3-f4bug@amsat.org>
On Sat, Sep 25, 2021 at 9:37 PM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> Our device have 2 different I/O regions:
> - a 16550 UART mapped for 32-bit accesses
> - 13 extra registers
>
> Instead of mapping each region on the main bus, introduce
> a container, map the 2 devices regions on the container,
> and map the container on the main bus.
>
> Before:
>
> (qemu) info mtree
> ...
> 0000000020100000-000000002010001f (prio 0, i/o): serial
> 0000000020100020-000000002010101f (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020102000-000000002010201f (prio 0, i/o): serial
> 0000000020102020-000000002010301f (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020104000-000000002010401f (prio 0, i/o): serial
> 0000000020104020-000000002010501f (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020106000-000000002010601f (prio 0, i/o): serial
> 0000000020106020-000000002010701f (prio 0, i/o): mchp.pfsoc.mmuart
>
> After:
>
> (qemu) info mtree
> ...
> 0000000020100000-0000000020100fff (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020100000-000000002010001f (prio 0, i/o): serial
> 0000000020100020-0000000020100fff (prio 0, i/o): mchp.pfsoc.mmuart.regs
> 0000000020102000-0000000020102fff (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020102000-000000002010201f (prio 0, i/o): serial
> 0000000020102020-0000000020102fff (prio 0, i/o): mchp.pfsoc.mmuart.regs
> 0000000020104000-0000000020104fff (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020104000-000000002010401f (prio 0, i/o): serial
> 0000000020104020-0000000020104fff (prio 0, i/o): mchp.pfsoc.mmuart.regs
> 0000000020106000-0000000020106fff (prio 0, i/o): mchp.pfsoc.mmuart
> 0000000020106000-000000002010601f (prio 0, i/o): serial
> 0000000020106020-0000000020106fff (prio 0, i/o): mchp.pfsoc.mmuart.regs
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> include/hw/char/mchp_pfsoc_mmuart.h | 1 +
> hw/char/mchp_pfsoc_mmuart.c | 11 ++++++++---
> 2 files changed, 9 insertions(+), 3 deletions(-)
>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
next prev parent reply other threads:[~2021-09-26 8:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-25 13:34 [PATCH v2 0/3] hw/char/mchp_pfsoc_mmuart: QOM'ify PolarFire MMUART Philippe Mathieu-Daudé
2021-09-25 13:34 ` [PATCH v2 1/3] hw/char/mchp_pfsoc_mmuart: Simplify MCHP_PFSOC_MMUART_REG definition Philippe Mathieu-Daudé
2021-09-26 8:31 ` Bin Meng
2021-09-26 8:38 ` Bin Meng
2021-09-28 22:19 ` Alistair Francis
2021-09-28 22:16 ` Alistair Francis
2021-09-28 22:42 ` Alistair Francis
2021-09-25 13:34 ` [PATCH v2 2/3] hw/char/mchp_pfsoc_mmuart: Use a MemoryRegion container Philippe Mathieu-Daudé
2021-09-26 8:31 ` Bin Meng [this message]
2021-09-28 22:12 ` Alistair Francis
2021-09-25 13:34 ` [PATCH v2 3/3] hw/char/mchp_pfsoc_mmuart: QOM'ify PolarFire MMUART Philippe Mathieu-Daudé
2021-09-26 8:31 ` Bin Meng
2021-09-28 22:15 ` Alistair Francis
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