Re: [PATCH for-10.0 0/7] hw/riscv: riscv-iommu-sys device

[Andrew Jones <ajones@ventanamicro.com>]

On Wed, Nov 06, 2024 at 10:34:00AM -0300, Daniel Henrique Barboza wrote:
> Hi,
> 
> Now that we have merged the base IOMMU support we can re-introduce
> the riscv-iommu-sys platform device that was taken away from the initial
> posting.
> 
> Aside from adding support for the device in the 'virt' machine we're
> also adding MSI support for it, something that we weren't doing before.
> The Linux driver is then free to choose either MSI or WSI to use the
> device.

The driver (still only in linux-next) only knows how to use WSI, but with
a series I just posted[1] MSI is also possible.

[1] https://lore.kernel.org/all/20241106175102.219923-4-ajones@ventanamicro.com/

Thanks,
drew

> 
> Patches based on master.
> 
> Daniel Henrique Barboza (5):
>   hw/riscv/riscv-iommu.c: add riscv_iommu_instance_init()
>   hw/riscv/riscv-iommu: parametrize CAP.IGS
>   hw/riscv/virt.c, riscv-iommu-sys.c: add MSIx support
>   hw/riscv/riscv-iommu: implement reset protocol
>   docs/specs: add riscv-iommu-sys information
> 
> Sunil V L (1):
>   hw/riscv/virt: Add IOMMU as platform device if the option is set
> 
> Tomasz Jeznach (1):
>   hw/riscv: add riscv-iommu-sys platform device
> 
>  docs/specs/riscv-iommu.rst  |  30 ++++-
>  docs/system/riscv/virt.rst  |  10 ++
>  hw/riscv/meson.build        |   2 +-
>  hw/riscv/riscv-iommu-bits.h |   6 +
>  hw/riscv/riscv-iommu-pci.c  |  21 +++
>  hw/riscv/riscv-iommu-sys.c  | 256 ++++++++++++++++++++++++++++++++++++
>  hw/riscv/riscv-iommu.c      | 114 +++++++++++-----
>  hw/riscv/riscv-iommu.h      |   5 +
>  hw/riscv/trace-events       |   4 +
>  hw/riscv/virt.c             | 108 ++++++++++++++-
>  include/hw/riscv/iommu.h    |  10 +-
>  include/hw/riscv/virt.h     |   6 +-
>  12 files changed, 530 insertions(+), 42 deletions(-)
>  create mode 100644 hw/riscv/riscv-iommu-sys.c
> 
> -- 
> 2.45.2
> 
>