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* [PATCH v3 0/3] nubus: add nubus-virtio-mmio device
@ 2024-01-11 10:29 Mark Cave-Ayland
  2024-01-11 10:29 ` [PATCH v3 1/3] nubus-device: round Declaration ROM memory region address to qemu_target_page_size() Mark Cave-Ayland
                   ` (5 more replies)
  0 siblings, 6 replies; 9+ messages in thread
From: Mark Cave-Ayland @ 2024-01-11 10:29 UTC (permalink / raw)
  To: laurent, qemu-devel, elliotnunn

This series introduces a new nubus-virtio-mmio device which can be plugged into
the q800 machine to enable a 68k Classic MacOS guest to access virtio devices
such as virtio-9p-device (host filesharing), virtio-gpu (extended framebuffer
support) and virtio-tablet-device (absolute positioning).

Once the nubus-virtio-mmio device has been plugged into the q800 machine, virtio
devices can be accessed by a Classic MacOS guest using the drivers from the
classicvirtio project at https://github.com/elliotnunn/classicvirtio.

The nubus-virtio-mmio device is purposefully designed to be similar to the
virtio-mmio interface used by the existing 68k virt machine, making use of a
similar memory layout and the goldfish PIC for simple interrupt management. The
main difference is that only a single goldfish PIC is used, however that still
allows up to 32 virtio devices to be connected using a single nubus card.

Patch 1 fixes an alignment bug in the existing nubus-device Declaration ROM code
whereby some ROM images could trigger an assert() in QEMU, patch 2 increases the
maximum Declaration ROM size (to aid development), whilst patch 3 adds the
nubus-virtio-mmio device itself.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

[Patches still needing review: 2, 3]

v3:
- Rebase onto master
- Update patch 1 alignment calculation to use intermediatery uint8_t rom_ptr
  variable, add Phil's R-B tag
- Add patch 2 to increase maximum Declaration ROM size to 1MB

v2:
- Rebase onto master
- Adjust comment in patch 1 as suggested by Phil


Mark Cave-Ayland (3):
  nubus-device: round Declaration ROM memory region address to
    qemu_target_page_size()
  nubus.h: increase maximum Declaration ROM size from 128k to 1Mb
  nubus: add nubus-virtio-mmio device

 hw/nubus/meson.build                 |   1 +
 hw/nubus/nubus-device.c              |  18 +++--
 hw/nubus/nubus-virtio-mmio.c         | 102 +++++++++++++++++++++++++++
 include/hw/nubus/nubus-virtio-mmio.h |  36 ++++++++++
 include/hw/nubus/nubus.h             |   2 +-
 5 files changed, 154 insertions(+), 5 deletions(-)
 create mode 100644 hw/nubus/nubus-virtio-mmio.c
 create mode 100644 include/hw/nubus/nubus-virtio-mmio.h

-- 
2.39.2



^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2024-02-23 18:06 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-01-11 10:29 [PATCH v3 0/3] nubus: add nubus-virtio-mmio device Mark Cave-Ayland
2024-01-11 10:29 ` [PATCH v3 1/3] nubus-device: round Declaration ROM memory region address to qemu_target_page_size() Mark Cave-Ayland
2024-01-11 10:29 ` [PATCH v3 2/3] nubus.h: increase maximum Declaration ROM size from 128k to 1Mb Mark Cave-Ayland
2024-01-11 10:29 ` [PATCH v3 3/3] nubus: add nubus-virtio-mmio device Mark Cave-Ayland
2024-01-22  9:01   ` Philippe Mathieu-Daudé
2024-01-21 12:29 ` [PATCH v3 0/3] " Mark Cave-Ayland
2024-02-23 14:47 ` Laurent Vivier
2024-02-23 17:46   ` Philippe Mathieu-Daudé
2024-02-23 17:44 ` Philippe Mathieu-Daudé

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