From: Alexandru Elisei <alexandru.elisei@arm.com>
To: Andre Przywara <andre.przywara@arm.com>,
Will Deacon <will@kernel.org>,
Julien Thierry <julien.thierry.kdev@gmail.com>
Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
Marc Zyngier <maz@kernel.org>
Subject: Re: [PATCH kvmtool 07/21] hw/i8042: Switch to new trap handlers
Date: Fri, 12 Feb 2021 10:41:20 +0000 [thread overview]
Message-ID: <a995ed28-27c0-888c-c3d4-ecb70c08a13e@arm.com> (raw)
In-Reply-To: <20201210142908.169597-8-andre.przywara@arm.com>
Hi Andre,
On 12/10/20 2:28 PM, Andre Przywara wrote:
> Now that the PC keyboard has a trap handler adhering to the MMIO fault
> handler prototype, let's switch over to the joint registration routine.
>
> This allows us to get rid of the ioport shim routines.
>
> Make the kbd_init() function static on the way.
>
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
> ---
> hw/i8042.c | 30 ++++--------------------------
> include/kvm/i8042.h | 1 -
> 2 files changed, 4 insertions(+), 27 deletions(-)
>
> diff --git a/hw/i8042.c b/hw/i8042.c
> index eb1f9d28..91d79dc4 100644
> --- a/hw/i8042.c
> +++ b/hw/i8042.c
> @@ -325,40 +325,18 @@ static void kbd_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, u32 len,
> ioport__write8(data, value);
> }
>
> -/*
> - * Called when the OS has written to one of the keyboard's ports (0x60 or 0x64)
> - */
> -static bool kbd_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size)
> -{
> - kbd_io(vcpu, port, data, size, false, NULL);
> -
> - return true;
> -}
> -
> -static bool kbd_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size)
> -{
> - kbd_io(vcpu, port, data, size, true, NULL);
> -
> - return true;
> -}
> -
> -static struct ioport_operations kbd_ops = {
> - .io_in = kbd_in,
> - .io_out = kbd_out,
> -};
> -
> -int kbd__init(struct kvm *kvm)
> +static int kbd__init(struct kvm *kvm)
> {
> int r;
>
> kbd_reset();
> state.kvm = kvm;
> - r = ioport__register(kvm, I8042_DATA_REG, &kbd_ops, 2, NULL);
> + r = kvm__register_pio(kvm, I8042_DATA_REG, 2, kbd_io, NULL);
I guess you are registering two addresses here to cover I8042_PORT_B_REG, right?
Might be worth a comment.
> if (r < 0)
> return r;
> - r = ioport__register(kvm, I8042_COMMAND_REG, &kbd_ops, 2, NULL);
> + r = kvm__register_pio(kvm, I8042_COMMAND_REG, 2, kbd_io, NULL);
Shouldn't length be 1? The emulation should work only for address 0x64
(command/status register), right? Or am I missing something?
Thanks,
Alex
> if (r < 0) {
> - ioport__unregister(kvm, I8042_DATA_REG);
> + kvm__deregister_pio(kvm, I8042_DATA_REG);
> return r;
> }
>
> diff --git a/include/kvm/i8042.h b/include/kvm/i8042.h
> index 3b4ab688..cd4ae6bb 100644
> --- a/include/kvm/i8042.h
> +++ b/include/kvm/i8042.h
> @@ -7,6 +7,5 @@ struct kvm;
>
> void mouse_queue(u8 c);
> void kbd_queue(u8 c);
> -int kbd__init(struct kvm *kvm);
>
> #endif
next prev parent reply other threads:[~2021-02-12 10:43 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 14:28 [PATCH kvmtool 00/21] Unify I/O port and MMIO trap handling Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 01/21] ioport: Remove ioport__setup_arch() Andre Przywara
2021-02-10 17:44 ` Alexandru Elisei
2021-02-11 17:16 ` Andre Przywara
2021-02-11 17:32 ` Alexandru Elisei
2021-02-17 16:46 ` Andre Przywara
2021-02-22 10:23 ` Andre Przywara
2021-02-22 15:01 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 02/21] hw/serial: Use device abstraction for FDT generator function Andre Przywara
2021-02-11 12:05 ` Alexandru Elisei
2021-02-11 17:45 ` Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 03/21] ioport: Retire .generate_fdt_node functionality Andre Przywara
2021-02-11 14:05 ` Alexandru Elisei
2021-02-17 15:54 ` Andre Przywara
2021-02-17 16:06 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 04/21] mmio: Extend handling to include ioport emulation Andre Przywara
2021-02-11 16:10 ` Alexandru Elisei
2021-02-17 17:43 ` Andre Przywara
2021-02-22 15:50 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 05/21] hw/i8042: Clean up data types Andre Przywara
2021-02-11 16:55 ` Alexandru Elisei
2021-02-17 17:46 ` Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 06/21] hw/i8042: Refactor trap handler Andre Przywara
2021-02-11 17:23 ` Alexandru Elisei
2021-02-18 10:34 ` Andre Przywara
2021-02-18 11:17 ` Alexandru Elisei
2021-02-18 11:48 ` Andre Przywara
2021-02-22 16:03 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 07/21] hw/i8042: Switch to new trap handlers Andre Przywara
2021-02-12 10:41 ` Alexandru Elisei [this message]
2021-02-18 12:09 ` Andre Przywara
2021-02-22 16:19 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 08/21] x86/ioport: Refactor " Andre Przywara
2021-02-12 11:14 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 09/21] x86/ioport: Switch to new " Andre Przywara
2021-02-12 11:27 ` Alexandru Elisei
2021-02-18 14:05 ` Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 10/21] hw/rtc: Refactor " Andre Przywara
2021-02-12 11:56 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 11/21] hw/rtc: Switch to new trap handler Andre Przywara
2021-02-12 12:02 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 12/21] hw/vesa: Switch trap handling to use MMIO handler Andre Przywara
2021-02-12 17:50 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 13/21] hw/serial: Refactor trap handler Andre Przywara
2021-02-16 14:22 ` Alexandru Elisei
2021-02-18 14:41 ` Andre Przywara
2021-02-22 17:40 ` Alexandru Elisei
2021-02-24 14:54 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 14/21] hw/serial: Switch to new trap handlers Andre Przywara
2021-02-16 14:31 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 15/21] vfio: Refactor ioport trap handler Andre Przywara
2021-02-16 14:47 ` Alexandru Elisei
2021-02-18 15:51 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 16/21] vfio: Switch to new ioport trap handlers Andre Przywara
2021-02-16 14:52 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 17/21] virtio: Switch trap handling to use MMIO handler Andre Przywara
2021-02-16 17:03 ` Alexandru Elisei
2021-02-18 16:13 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 18/21] pci: " Andre Przywara
2021-02-17 15:14 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 19/21] Remove ioport specific routines Andre Przywara
2021-02-17 15:49 ` Alexandru Elisei
2021-02-17 16:11 ` Alexandru Elisei
2021-02-18 16:34 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 20/21] hw/serial: ARM/arm64: Use MMIO at higher addresses Andre Przywara
2021-02-17 16:48 ` Alexandru Elisei
2021-02-18 12:18 ` Alexandru Elisei
2021-02-18 16:38 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 21/21] hw/rtc: " Andre Przywara
2021-02-18 13:33 ` Alexandru Elisei
2021-02-18 16:41 ` Andre Przywara
2021-02-10 17:44 ` [PATCH kvmtool 00/21] Unify I/O port and MMIO trap handling Alexandru Elisei
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