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Message-ID: <20250205135107.50223e7a@collabora.com>
Date: Wed, 5 Feb 2025 13:51:07 +0100
From: Boris Brezillon <boris.brezillon@...labora.com>
To: "Rob Herring (Arm)" <robh@...nel.org>
Cc: Steven Price <steven.price@....com>, Liviu Dudau <liviu.dudau@....com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
<mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie
<airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Miguel Ojeda
<ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng
<boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn
Roy Baron <bjorn3_gh@...tonmail.com>, Benno Lossin
<benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, Alice
Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Beata
Michalska <beata.michalska@....com>, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org
Subject: Re: [PATCH] drm/panthor: Convert IOCTL defines to an enum
On Tue, 4 Feb 2025 17:28:24 -0600
"Rob Herring (Arm)" <robh@...nel.org> wrote:
> Use an enum instead of #defines for panthor IOCTLs. This allows the
> header to be used with Rust code as bindgen can't handle complex
> defines.
>
> Cc: Beata Michalska <beata.michalska@....com>
> Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
Acked-by: Boris Brezillon <boris.brezillon@...labora.com>
> ---
> include/uapi/drm/panthor_drm.h | 86 +++++++++++++++++-----------------
> 1 file changed, 44 insertions(+), 42 deletions(-)
>
> diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h
> index b99763cbae48..97e2c4510e69 100644
> --- a/include/uapi/drm/panthor_drm.h
> +++ b/include/uapi/drm/panthor_drm.h
> @@ -129,48 +129,6 @@ enum drm_panthor_ioctl_id {
> DRM_PANTHOR_TILER_HEAP_DESTROY,
> };
>
> -/**
> - * DRM_IOCTL_PANTHOR() - Build a Panthor IOCTL number
> - * @__access: Access type. Must be R, W or RW.
> - * @__id: One of the DRM_PANTHOR_xxx id.
> - * @__type: Suffix of the type being passed to the IOCTL.
> - *
> - * Don't use this macro directly, use the DRM_IOCTL_PANTHOR_xxx
> - * values instead.
> - *
> - * Return: An IOCTL number to be passed to ioctl() from userspace.
> - */
> -#define DRM_IOCTL_PANTHOR(__access, __id, __type) \
> - DRM_IO ## __access(DRM_COMMAND_BASE + DRM_PANTHOR_ ## __id, \
> - struct drm_panthor_ ## __type)
> -
> -#define DRM_IOCTL_PANTHOR_DEV_QUERY \
> - DRM_IOCTL_PANTHOR(WR, DEV_QUERY, dev_query)
> -#define DRM_IOCTL_PANTHOR_VM_CREATE \
> - DRM_IOCTL_PANTHOR(WR, VM_CREATE, vm_create)
> -#define DRM_IOCTL_PANTHOR_VM_DESTROY \
> - DRM_IOCTL_PANTHOR(WR, VM_DESTROY, vm_destroy)
> -#define DRM_IOCTL_PANTHOR_VM_BIND \
> - DRM_IOCTL_PANTHOR(WR, VM_BIND, vm_bind)
> -#define DRM_IOCTL_PANTHOR_VM_GET_STATE \
> - DRM_IOCTL_PANTHOR(WR, VM_GET_STATE, vm_get_state)
> -#define DRM_IOCTL_PANTHOR_BO_CREATE \
> - DRM_IOCTL_PANTHOR(WR, BO_CREATE, bo_create)
> -#define DRM_IOCTL_PANTHOR_BO_MMAP_OFFSET \
> - DRM_IOCTL_PANTHOR(WR, BO_MMAP_OFFSET, bo_mmap_offset)
> -#define DRM_IOCTL_PANTHOR_GROUP_CREATE \
> - DRM_IOCTL_PANTHOR(WR, GROUP_CREATE, group_create)
> -#define DRM_IOCTL_PANTHOR_GROUP_DESTROY \
> - DRM_IOCTL_PANTHOR(WR, GROUP_DESTROY, group_destroy)
> -#define DRM_IOCTL_PANTHOR_GROUP_SUBMIT \
> - DRM_IOCTL_PANTHOR(WR, GROUP_SUBMIT, group_submit)
> -#define DRM_IOCTL_PANTHOR_GROUP_GET_STATE \
> - DRM_IOCTL_PANTHOR(WR, GROUP_GET_STATE, group_get_state)
> -#define DRM_IOCTL_PANTHOR_TILER_HEAP_CREATE \
> - DRM_IOCTL_PANTHOR(WR, TILER_HEAP_CREATE, tiler_heap_create)
> -#define DRM_IOCTL_PANTHOR_TILER_HEAP_DESTROY \
> - DRM_IOCTL_PANTHOR(WR, TILER_HEAP_DESTROY, tiler_heap_destroy)
> -
> /**
> * DOC: IOCTL arguments
> */
> @@ -1019,6 +977,50 @@ struct drm_panthor_tiler_heap_destroy {
> __u32 pad;
> };
>
> +/**
> + * DRM_IOCTL_PANTHOR() - Build a Panthor IOCTL number
> + * @__access: Access type. Must be R, W or RW.
> + * @__id: One of the DRM_PANTHOR_xxx id.
> + * @__type: Suffix of the type being passed to the IOCTL.
> + *
> + * Don't use this macro directly, use the DRM_IOCTL_PANTHOR_xxx
> + * values instead.
> + *
> + * Return: An IOCTL number to be passed to ioctl() from userspace.
> + */
> +#define DRM_IOCTL_PANTHOR(__access, __id, __type) \
> + DRM_IO ## __access(DRM_COMMAND_BASE + DRM_PANTHOR_ ## __id, \
> + struct drm_panthor_ ## __type)
> +
> +enum {
> + DRM_IOCTL_PANTHOR_DEV_QUERY =
> + DRM_IOCTL_PANTHOR(WR, DEV_QUERY, dev_query),
> + DRM_IOCTL_PANTHOR_VM_CREATE =
> + DRM_IOCTL_PANTHOR(WR, VM_CREATE, vm_create),
> + DRM_IOCTL_PANTHOR_VM_DESTROY =
> + DRM_IOCTL_PANTHOR(WR, VM_DESTROY, vm_destroy),
> + DRM_IOCTL_PANTHOR_VM_BIND =
> + DRM_IOCTL_PANTHOR(WR, VM_BIND, vm_bind),
> + DRM_IOCTL_PANTHOR_VM_GET_STATE =
> + DRM_IOCTL_PANTHOR(WR, VM_GET_STATE, vm_get_state),
> + DRM_IOCTL_PANTHOR_BO_CREATE =
> + DRM_IOCTL_PANTHOR(WR, BO_CREATE, bo_create),
> + DRM_IOCTL_PANTHOR_BO_MMAP_OFFSET =
> + DRM_IOCTL_PANTHOR(WR, BO_MMAP_OFFSET, bo_mmap_offset),
> + DRM_IOCTL_PANTHOR_GROUP_CREATE =
> + DRM_IOCTL_PANTHOR(WR, GROUP_CREATE, group_create),
> + DRM_IOCTL_PANTHOR_GROUP_DESTROY =
> + DRM_IOCTL_PANTHOR(WR, GROUP_DESTROY, group_destroy),
> + DRM_IOCTL_PANTHOR_GROUP_SUBMIT =
> + DRM_IOCTL_PANTHOR(WR, GROUP_SUBMIT, group_submit),
> + DRM_IOCTL_PANTHOR_GROUP_GET_STATE =
> + DRM_IOCTL_PANTHOR(WR, GROUP_GET_STATE, group_get_state),
> + DRM_IOCTL_PANTHOR_TILER_HEAP_CREATE =
> + DRM_IOCTL_PANTHOR(WR, TILER_HEAP_CREATE, tiler_heap_create),
> + DRM_IOCTL_PANTHOR_TILER_HEAP_DESTROY =
> + DRM_IOCTL_PANTHOR(WR, TILER_HEAP_DESTROY, tiler_heap_destroy),
> +};
> +
> #if defined(__cplusplus)
> }
> #endif
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