Commit graph

7 commits

Author SHA1 Message Date
Jean-Sébastien Pédron
29d0c85c86
linuxkpi: Add io_mapping_map_local_wc() and io_mapping_unmap_local()
`io_mapping_map_local_wc()` is synonymous to `io_mapping_map_atomic_wc()`.

Reviewed by:	manu
Approved by:	manu
Differential Revision:	https://reviews.freebsd.org/D38156
2023-01-30 23:09:38 +01:00
Jean-Sébastien Pédron
b99bc86232
linuxkpi: Add io_mapping_map_user() and remap_pfn_range()
The code comes from the i915 DRM driver.

In Linux commits b739f125e4ebd73d10ed30a856574e13649119ed and
b12d691ea5e01db42ccf3b4207e57cb3ce7cfe91 (Linux 5.13), the i915 DRM
driver dropped specific implementations to use Linux generic functions.
Therefore I moved the FreeBSD code from that i915 driver to linuxkpi.

However, these commits were later reverted (also in Linux 5.13) so the
i915 driver doesn't use these functions. But perhaps it will help in the
future.

To sum up, the code comes from the i915 DRM driver but it doesn't use it
(i.e. it continues to use its internal implementation).

Reviewed by:	manu
Approved by:	manu
Differential Revision:	https://reviews.freebsd.org/D38088
2023-01-25 22:26:54 +01:00
Warner Losh
132b00f906 linuxkpi: move io_mapping_create_wc to .c
Move io_mapping_create_wc to .c because it encodes the size of struct
io_mapping so we move this from the client module to the linuxkpi
module.

Sponsored by:		Netflix
Reviewed by:		hselasky, emaste
Differential Revision:	https://reviews.freebsd.org/D34776
2022-04-04 23:06:37 -06:00
Vladimir Kondratyev
307f78f3ed LinuxKPI: Constantly use _LINUXKPI_ prefix in include guards
MFC after:	1 week
Reviewed by:	bz, emaste, hselasky, manu
Differential Revision:	https://reviews.freebsd.org/D33562
2022-01-10 22:49:38 +03:00
Mark Johnston
4600d349be Let io_mapping_init_wc() fall back to an uncacheable mapping.
This allows usage of the function on architectures that don't support
write-combining.

Reported by:	bz, emaste
X-MFC With:	r320196
2017-07-03 02:01:16 +00:00
Mark Johnston
c73cdca2c4 Update io-mapping.h in the LinuxKPI.
Add io_mapping_init_wc() and add a third (unused) parameter to
io_mapping_map_wc().

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11286
2017-06-21 18:20:17 +00:00
Hans Petter Selasky
8d59ecb214 Finish process of moving the LinuxKPI module into the default kernel build.
- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
  its subfolders.
- Update sys/conf/files and some Makefiles to use new file locations.
- Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn
  adds the LinuxKPI to all LINT builds.
- The LinuxKPI can be added to the kernel by setting the
  COMPAT_LINUXKPI option. The OFED kernel option no longer builds the
  LinuxKPI into the kernel. This was done to keep the build rules for
  the LinuxKPI in sys/conf/files simple.
- Extend the LinuxKPI module to include support for USB by moving the
  Linux USB compat from usb.ko to linuxkpi.ko.
- Bump the FreeBSD_version.
- A universe kernel build has been done.

Reviewed by:	np @ (cxgb and cxgbe related changes only)
Sponsored by:	Mellanox Technologies
2015-10-29 08:28:39 +00:00
Renamed from sys/ofed/include/linux/io-mapping.h (Browse further)