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From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
To: laurent@vivier.eu, qemu-devel@nongnu.org
Subject: [PATCH v2 2/8] q800: move VIA1 IRQ from level 1 to level 6
Date: Wed, 20 Oct 2021 14:41:25 +0100	[thread overview]
Message-ID: <20211020134131.4392-3-mark.cave-ayland@ilande.co.uk> (raw)
In-Reply-To: <20211020134131.4392-1-mark.cave-ayland@ilande.co.uk>

On a Quadra 800 machine Linux sets via_alt_mapping to 1 and clears port B bit 6 to
ensure that the VIA1 IRQ is delivered at level 6 rather than level 1. Even though
QEMU doesn't yet emulate this behaviour, Linux still installs the VIA1 level 1 IRQ
handler regardless of the value of via_alt_mapping which is why the kernel has been
able to boot until now.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
---
 hw/m68k/q800.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index fd4855047e..15f3067811 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -284,7 +284,7 @@ static void q800_init(MachineState *machine)
     sysbus = SYS_BUS_DEVICE(via1_dev);
     sysbus_realize_and_unref(sysbus, &error_fatal);
     sysbus_mmio_map(sysbus, 1, VIA_BASE);
-    sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(glue, 0));
+    sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(glue, 5));
 
     adb_bus = qdev_get_child_bus(via1_dev, "adb.0");
     dev = qdev_new(TYPE_ADB_KEYBOARD);
-- 
2.20.1



  parent reply	other threads:[~2021-10-20 13:47 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-20 13:41 [PATCH v2 0/8] q800: GLUE updates for A/UX mode Mark Cave-Ayland
2021-10-20 13:41 ` [PATCH v2 1/8] mac_via: update comment for VIA1B_vMystery bit Mark Cave-Ayland
2021-10-20 13:41 ` Mark Cave-Ayland [this message]
2021-10-20 13:41 ` [PATCH v2 3/8] q800: use GLUE IRQ numbers instead of IRQ level for GLUE IRQs Mark Cave-Ayland
2021-10-20 14:04   ` Laurent Vivier
2021-10-20 13:41 ` [PATCH v2 4/8] mac_via: add GPIO for A/UX mode Mark Cave-Ayland
2021-10-20 13:41 ` [PATCH v2 5/8] q800: wire up auxmode GPIO to GLUE Mark Cave-Ayland
2021-10-20 13:41 ` [PATCH v2 6/8] q800: route SONIC on-board Ethernet IRQ via nubus IRQ 9 in classic mode Mark Cave-Ayland
2021-10-20 14:07   ` Laurent Vivier
2021-10-20 13:41 ` [PATCH v2 7/8] q800: wire up remaining IRQs " Mark Cave-Ayland
2021-10-20 13:41 ` [PATCH v2 8/8] q800: add NMI handler Mark Cave-Ayland

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