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From: Steven Price <steven.price@arm.com>
To: "Alyssa Rosenzweig" <alyssa.rosenzweig@collabora.com>,
	"Adrián Larumbe" <adrian.larumbe@collabora.com>
Cc: Steven Price <steven.price@arm.com>,
	Rob Herring <robh@kernel.org>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH v2 0/2] drm/panfrost: Fix UAPI for C++/BSD compatibility
Date: Mon, 17 Oct 2022 11:46:00 +0100	[thread overview]
Message-ID: <20221017104602.142992-1-steven.price@arm.com> (raw)

The Panfrost DRM interface to user space is uesd in Mesa for targets
other than C/Linux. Specifically the header file needs to compile in C++
code and for FreeBSD which shares the same UABI.

The first patch fixes the C++ compilation issue by removing the
(unnecessary) type name from internal structs which is invalid in C++.

The second patch technically changes the UABI by changing the header
values in the dump format to be native endian rather than fixed
little-endian. Since (a) there are no known big-endian Mali systems, and
(b) this has only appeared in -rc1, this shouldn't break user space.
Tools can use the 'magic' field to identify the endianness of the dump
if they want to support big-endian.

This is effectively a 'v2' of Adrián's series here [1].

[1] https://lore.kernel.org/r/20220920211545.1017355-1-adrian.larumbe%40collabora.com

Steven Price (2):
  drm/panfrost: Remove type name from internal structs
  drm/panfrost: replace endian-specific types with native ones

 drivers/gpu/drm/panfrost/panfrost_dump.c | 36 ++++++++++++------------
 include/uapi/drm/panfrost_drm.h          | 36 +++++++++++++-----------
 2 files changed, 38 insertions(+), 34 deletions(-)

-- 
2.34.1


             reply	other threads:[~2022-10-17 10:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-17 10:46 Steven Price [this message]
2022-10-17 10:46 ` [PATCH v2 1/2] drm/panfrost: Remove type name from internal structs Steven Price
2022-10-17 10:46 ` [PATCH v2 2/2] drm/panfrost: replace endian-specific types with native ones Steven Price
2022-10-17 15:44 ` [PATCH v2 0/2] drm/panfrost: Fix UAPI for C++/BSD compatibility Alyssa Rosenzweig
2022-10-20 10:17   ` Steven Price

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