From: David Woodhouse <dwmw2@infradead.org>
To: BALATON Zoltan <balaton@eik.bme.hu>,
"Michael S . Tsirkin" <mst@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: Bernhard Beschow <shentey@gmail.com>,
qemu-devel@nongnu.org, qemu-ppc@nongnu.org,
Gerd Hoffmann <kraxel@redhat.com>,
Daniel Henrique Barboza <danielhb413@gmail.com>,
Peter Maydell <peter.maydell@linaro.org>,
philmd@linaro.org, ReneEngel80@emailn.de
Subject: Re: [PATCH] hw/intc/i8259: Implement legacy LTIM Edge/Level Bank Select
Date: Thu, 02 Mar 2023 09:58:22 +0000 [thread overview]
Message-ID: <518d1e9d938030412f1eaa335b679646ffc788bd.camel@infradead.org> (raw)
In-Reply-To: <20230302090626.1085437-1-dwmw2@infradead.org>
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On Thu, 2023-03-02 at 09:06 +0000, David Woodhouse wrote:
> Back in the mists of time, before IBM PS/2 came along with MCA and added
> per-pin level control in the ELCR register, the i8259 had a chip-wide
> level-mode control in bit 3 of ICW1.
Actually... I think MCA might have been level triggered system-wide,
and still used this LTIM bit. Per-pin control via ELCR probably came in
with EISA?
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next prev parent reply other threads:[~2023-03-02 9:58 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-01 0:17 [PATCH v5 0/7] Pegasos2 fixes and audio output support BALATON Zoltan
2023-03-01 0:17 ` [PATCH v5 1/7] hw/display/sm501: Add debug property to control pixman usage BALATON Zoltan
2023-03-02 21:51 ` BALATON Zoltan
2023-03-01 0:17 ` [PATCH v5 2/7] Revert "hw/isa/vt82c686: Remove intermediate IRQ forwarder" BALATON Zoltan
2023-03-01 0:33 ` BALATON Zoltan
2023-03-01 6:43 ` Bernhard Beschow
2023-03-01 11:17 ` BALATON Zoltan
2023-03-02 10:41 ` Philippe Mathieu-Daudé
2023-03-02 10:44 ` Philippe Mathieu-Daudé
2023-03-02 12:37 ` BALATON Zoltan
2023-03-02 12:46 ` Philippe Mathieu-Daudé
2023-03-01 0:17 ` [PATCH v5 3/7] hw/isa/vt82c686: Implement PCI IRQ routing BALATON Zoltan
2023-03-01 6:38 ` Bernhard Beschow
2023-03-01 11:15 ` BALATON Zoltan
2023-03-01 21:08 ` Bernhard Beschow
2023-03-01 21:27 ` BALATON Zoltan
2023-03-01 0:17 ` [PATCH v5 4/7] hw/ppc/pegasos2: Fix PCI interrupt routing BALATON Zoltan
2023-03-03 9:17 ` Daniel Henrique Barboza
2023-03-01 0:17 ` [PATCH v5 5/7] hw/isa/vt82c686: Work around missing level sensitive irq in i8259 model BALATON Zoltan
2023-03-01 6:49 ` Bernhard Beschow
2023-03-01 11:27 ` BALATON Zoltan
2023-03-01 11:52 ` David Woodhouse
2023-03-01 13:18 ` BALATON Zoltan
2023-03-01 14:05 ` David Woodhouse
2023-03-01 18:01 ` BALATON Zoltan
2023-03-01 21:53 ` David Woodhouse
2023-03-01 22:47 ` BALATON Zoltan
2023-03-02 8:59 ` David Woodhouse
2023-03-02 9:06 ` [PATCH] hw/intc/i8259: Implement legacy LTIM Edge/Level Bank Select David Woodhouse
2023-03-02 9:58 ` David Woodhouse [this message]
2023-03-02 12:35 ` BALATON Zoltan
2023-03-02 21:46 ` [PATCH v5 5/7] hw/isa/vt82c686: Work around missing level sensitive irq in i8259 model BALATON Zoltan
2023-03-01 20:58 ` Bernhard Beschow
2023-03-01 0:17 ` [PATCH v5 6/7] hw/usb/vt82c686-uhci-pci: Use PCI IRQ routing BALATON Zoltan
2023-03-01 0:17 ` [PATCH v5 7/7] hw/audio/via-ac97: Basic implementation of audio playback BALATON Zoltan
2023-03-02 21:59 ` BALATON Zoltan
2023-03-03 6:57 ` Volker Rümelin
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