From: Andre Przywara <andre.przywara@arm.com> To: Will Deacon <will@kernel.org>, Julien Thierry <julien.thierry.kdev@gmail.com> Cc: Alexandru Elisei <alexandru.elisei@arm.com>, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Marc Zyngier <maz@kernel.org>, Sami Mujawar <sami.mujawar@arm.com> Subject: [PATCH kvmtool v3 08/22] x86/ioport: Refactor trap handlers Date: Mon, 15 Mar 2021 15:33:36 +0000 [thread overview] Message-ID: <20210315153350.19988-9-andre.przywara@arm.com> (raw) In-Reply-To: <20210315153350.19988-1-andre.przywara@arm.com> With the planned retirement of the special ioport emulation code, we need to provide emulation functions compatible with the MMIO prototype. Adjust the trap handlers to use that new function, and provide shims to implement the old ioport interface, for now. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com> --- x86/ioport.c | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/x86/ioport.c b/x86/ioport.c index a8d2bb1a..b198de7a 100644 --- a/x86/ioport.c +++ b/x86/ioport.c @@ -3,8 +3,14 @@ #include <stdlib.h> #include <stdio.h> +static void dummy_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, u32 len, + u8 is_write, void *ptr) +{ +} + static bool debug_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) { + dummy_io(vcpu, port, data, size, true, NULL); return 0; } @@ -12,15 +18,23 @@ static struct ioport_operations debug_ops = { .io_out = debug_io_out, }; -static bool seabios_debug_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +static void seabios_debug_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, + u32 len, u8 is_write, void *ptr) { char ch; + if (!is_write) + return; + ch = ioport__read8(data); putchar(ch); +} - return true; +static bool seabios_debug_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +{ + seabios_debug_io(vcpu, port, data, size, true, NULL); + return 0; } static struct ioport_operations seabios_debug_ops = { @@ -29,11 +43,13 @@ static struct ioport_operations seabios_debug_ops = { static bool dummy_io_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) { + dummy_io(vcpu, port, data, size, false, NULL); return true; } static bool dummy_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) { + dummy_io(vcpu, port, data, size, true, NULL); return true; } @@ -50,13 +66,19 @@ static struct ioport_operations dummy_write_only_ioport_ops = { * The "fast A20 gate" */ -static bool ps2_control_a_io_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +static void ps2_control_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, u32 len, + u8 is_write, void *ptr) { /* * A20 is always enabled. */ - ioport__write8(data, 0x02); + if (!is_write) + ioport__write8(data, 0x02); +} +static bool ps2_control_a_io_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +{ + ps2_control_io(vcpu, port, data, size, false, NULL); return true; } -- 2.17.5
WARNING: multiple messages have this Message-ID (diff)
From: Andre Przywara <andre.przywara@arm.com> To: Will Deacon <will@kernel.org>, Julien Thierry <julien.thierry.kdev@gmail.com> Cc: Marc Zyngier <maz@kernel.org>, Sami Mujawar <sami.mujawar@arm.com>, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH kvmtool v3 08/22] x86/ioport: Refactor trap handlers Date: Mon, 15 Mar 2021 15:33:36 +0000 [thread overview] Message-ID: <20210315153350.19988-9-andre.przywara@arm.com> (raw) In-Reply-To: <20210315153350.19988-1-andre.przywara@arm.com> With the planned retirement of the special ioport emulation code, we need to provide emulation functions compatible with the MMIO prototype. Adjust the trap handlers to use that new function, and provide shims to implement the old ioport interface, for now. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com> --- x86/ioport.c | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/x86/ioport.c b/x86/ioport.c index a8d2bb1a..b198de7a 100644 --- a/x86/ioport.c +++ b/x86/ioport.c @@ -3,8 +3,14 @@ #include <stdlib.h> #include <stdio.h> +static void dummy_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, u32 len, + u8 is_write, void *ptr) +{ +} + static bool debug_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) { + dummy_io(vcpu, port, data, size, true, NULL); return 0; } @@ -12,15 +18,23 @@ static struct ioport_operations debug_ops = { .io_out = debug_io_out, }; -static bool seabios_debug_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +static void seabios_debug_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, + u32 len, u8 is_write, void *ptr) { char ch; + if (!is_write) + return; + ch = ioport__read8(data); putchar(ch); +} - return true; +static bool seabios_debug_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +{ + seabios_debug_io(vcpu, port, data, size, true, NULL); + return 0; } static struct ioport_operations seabios_debug_ops = { @@ -29,11 +43,13 @@ static struct ioport_operations seabios_debug_ops = { static bool dummy_io_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) { + dummy_io(vcpu, port, data, size, false, NULL); return true; } static bool dummy_io_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) { + dummy_io(vcpu, port, data, size, true, NULL); return true; } @@ -50,13 +66,19 @@ static struct ioport_operations dummy_write_only_ioport_ops = { * The "fast A20 gate" */ -static bool ps2_control_a_io_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +static void ps2_control_io(struct kvm_cpu *vcpu, u64 addr, u8 *data, u32 len, + u8 is_write, void *ptr) { /* * A20 is always enabled. */ - ioport__write8(data, 0x02); + if (!is_write) + ioport__write8(data, 0x02); +} +static bool ps2_control_a_io_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size) +{ + ps2_control_io(vcpu, port, data, size, false, NULL); return true; } -- 2.17.5 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
next prev parent reply other threads:[~2021-03-15 15:35 UTC|newest] Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-15 15:33 [PATCH kvmtool v3 00/22] Unify I/O port and MMIO trap handling Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 01/22] ioport: Remove ioport__setup_arch() Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 02/22] hw/serial: Use device abstraction for FDT generator function Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 03/22] ioport: Retire .generate_fdt_node functionality Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 04/22] mmio: Extend handling to include ioport emulation Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 05/22] hw/i8042: Clean up data types Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 06/22] hw/i8042: Refactor trap handler Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 07/22] hw/i8042: Switch to new trap handlers Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` Andre Przywara [this message] 2021-03-15 15:33 ` [PATCH kvmtool v3 08/22] x86/ioport: Refactor " Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 09/22] x86/ioport: Switch to new " Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 10/22] hw/rtc: Refactor " Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 11/22] hw/rtc: Switch to new trap handler Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 12/22] hw/vesa: Switch trap handling to use MMIO handler Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 13/22] hw/serial: Refactor trap handler Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-16 15:40 ` Alexandru Elisei 2021-03-16 15:40 ` Alexandru Elisei 2021-03-15 15:33 ` [PATCH kvmtool v3 14/22] hw/serial: Switch to new trap handlers Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 15/22] vfio: Refactor ioport trap handler Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 16/22] vfio: Switch to new ioport trap handlers Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 17/22] virtio: Switch trap handling to use MMIO handler Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 18/22] pci: " Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 19/22] Remove ioport specific routines Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-15 15:33 ` [PATCH kvmtool v3 20/22] arm: Reorganise and document memory map Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-17 15:17 ` Alexandru Elisei 2021-03-17 15:17 ` Alexandru Elisei 2021-03-15 15:33 ` [PATCH kvmtool v3 21/22] hw/serial: ARM/arm64: Use MMIO at higher addresses Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-17 16:17 ` Alexandru Elisei 2021-03-17 16:17 ` Alexandru Elisei 2021-03-15 15:33 ` [PATCH kvmtool v3 22/22] hw/rtc: " Andre Przywara 2021-03-15 15:33 ` Andre Przywara 2021-03-17 17:44 ` [PATCH kvmtool v3 00/22] Unify I/O port and MMIO trap handling Alexandru Elisei 2021-03-17 17:44 ` Alexandru Elisei 2021-03-18 10:04 ` Will Deacon 2021-03-18 10:04 ` Will Deacon
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