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nubus-device: expose separate super slot memory region

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According to "Designing Cards and Drivers for the Macintosh Family" each physical
nubus slot can access 2 separate address ranges: a super slot memory region which
is 256MB and a standard slot memory region which is 16MB.

Currently a Nubus device uses the physical slot number to determine whether it is
using a standard slot memory region or a super slot memory region rather than
exposing both memory regions for use as required.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210924073808.1041-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Mark Cave-Ayland 2021-09-24 08:37:51 +01:00 • committed by Laurent Vivier
parent e2c49c0515
commit 90be1dea50
2 changed files with 18 additions and 17 deletions
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1
include/hw/nubus/nubus.h
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@ -43,6 +43,7 @@ struct NubusDevice {
DeviceState qdev;
int slot;
MemoryRegion super_slot_mem;
MemoryRegion slot_mem;
/* Format Block */