[PATCH] drm: drm_basic_types.h, DRM_FOURCC_STANDALONE

[James Park]

I'd noticed the #if could be combined, but they weren't in drm,h when they
could have been, so I didn't want to depart from the existing pattern.

I think "One of the BSDs" is more informative than "Not Linux" if that
statement is still true. Given the aversion to making drm.h robust to
Windows, I don't think we want to imply compatibility that isn't there.

Thanks,
James

On Mon, Dec 7, 2020 at 1:45 AM Simon Ser <contact at emersion.fr> wrote:

> On Sunday, December 6th, 2020 at 1:39 AM, James Park <
> jpark37 at lagfreegames.com> wrote:
>
> > Create drm_basic_types.h to define types previously defined by drm.h.
> >
> > Use DRM_FOURCC_STANDALONE to include drm_fourcc.h, replacing drm.h
> > dependency with drm_basic_types.h.
>
> This approach looks better to me than the other alternatives.
>
> > This will allow Mesa to port code to Windows more easily.
> >
> > Signed-off-by: James Park <jpark37 at lagfreegames.com>
> > ---
> >  include/uapi/drm/drm.h             | 14 ++--------
> >  include/uapi/drm/drm_basic_types.h | 52
> ++++++++++++++++++++++++++++++++++++++
> >  include/uapi/drm/drm_fourcc.h      |  4 +++
> >  3 files changed, 58 insertions(+), 12 deletions(-)
> >  create mode 100644 include/uapi/drm/drm_basic_types.h
> >
> > diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
> > index 808b48a..a7f38fc 100644
> > --- a/include/uapi/drm/drm.h
> > +++ b/include/uapi/drm/drm.h
> > @@ -36,32 +36,22 @@
> >  #ifndef _DRM_H_
> >  #define _DRM_H_
> >
> > +#include "drm_basic_types.h"
> > +
> >  #if defined(__KERNEL__)
> >
> > -#include <linux/types.h>
> >  #include <asm/ioctl.h>
> >  typedef unsigned int drm_handle_t;
> >
> >  #elif defined(__linux__)
> >
> > -#include <linux/types.h>
> >  #include <asm/ioctl.h>
> >  typedef unsigned int drm_handle_t;
> >
> >  #else /* One of the BSDs */
> >
> > -#include <stdint.h>
> >  #include <sys/ioccom.h>
> >  #include <sys/types.h>
> > -typedef int8_t   __s8;
> > -typedef uint8_t  __u8;
> > -typedef int16_t  __s16;
> > -typedef uint16_t __u16;
> > -typedef int32_t  __s32;
> > -typedef uint32_t __u32;
> > -typedef int64_t  __s64;
> > -typedef uint64_t __u64;
> > -typedef size_t   __kernel_size_t;
> >  typedef unsigned long drm_handle_t;
> >
> >  #endif
> > diff --git a/include/uapi/drm/drm_basic_types.h
> b/include/uapi/drm/drm_basic_types.h
> > new file mode 100644
> > index 0000000..b3c00bb
> > --- /dev/null
> > +++ b/include/uapi/drm/drm_basic_types.h
> > @@ -0,0 +1,52 @@
> > +/*
> > + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
> > + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
> > + * All rights reserved.
> > + *
> > + * Permission is hereby granted, free of charge, to any person
> obtaining a
> > + * copy of this software and associated documentation files (the
> "Software"),
> > + * to deal in the Software without restriction, including without
> limitation
> > + * the rights to use, copy, modify, merge, publish, distribute,
> sublicense,
> > + * and/or sell copies of the Software, and to permit persons to whom the
> > + * Software is furnished to do so, subject to the following conditions:
> > + *
> > + * The above copyright notice and this permission notice (including the
> next
> > + * paragraph) shall be included in all copies or substantial portions
> of the
> > + * Software.
> > + *
> > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT
> SHALL
> > + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> DAMAGES OR
> > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > + * OTHER DEALINGS IN THE SOFTWARE.
> > + */
> > +
> > +#ifndef _DRM_BASIC_TYPES_H_
> > +#define _DRM_BASIC_TYPES_H_
> > +
> > +#if defined(__KERNEL__)
> > +
> > +#include <linux/types.h>
> > +
> > +#elif defined(__linux__)
>
> Nit: these two #ifs can be combined together.
>
> > +#include <linux/types.h>
> > +
> > +#else /* One of the BSDs */
>
> Maybe replace with /* Not Linux */?
>
> > +#include <stdint.h>
> > +typedef int8_t   __s8;
> > +typedef uint8_t  __u8;
> > +typedef int16_t  __s16;
> > +typedef uint16_t __u16;
> > +typedef int32_t  __s32;
> > +typedef uint32_t __u32;
> > +typedef int64_t  __s64;
> > +typedef uint64_t __u64;
> > +typedef size_t   __kernel_size_t;
> > +
> > +#endif
> > +
> > +#endif
> > diff --git a/include/uapi/drm/drm_fourcc.h
> b/include/uapi/drm/drm_fourcc.h
> > index 82f3278..5eb07a5 100644
> > --- a/include/uapi/drm/drm_fourcc.h
> > +++ b/include/uapi/drm/drm_fourcc.h
> > @@ -24,7 +24,11 @@
> >  #ifndef DRM_FOURCC_H
> >  #define DRM_FOURCC_H
> >
> > +#ifdef DRM_FOURCC_STANDALONE
> > +#include "drm_basic_types.h"
> > +#else
> >  #include "drm.h"
> > +#endif
> >
> >  #if defined(__cplusplus)
> >  extern "C" {
> > --
> > 2.7.4
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
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