Commit Graph

236 Commits

Author SHA1 Message Date
Hans Petter Selasky
ef9257491d Remove release and acquire semantics when accessing the "state" field of the
LinuxKPI task struct. Change type of "state" variable from "int" to
"atomic_t" to simplify code and avoid unneccessary casting.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-11-11 11:01:50 +00:00
Hans Petter Selasky
e0390735d3 Mask away return codes from del_timer() and del_timer_sync() because
they are not the same like in Linux.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-11-11 10:46:12 +00:00
Hans Petter Selasky
076f7ce6f6 Remove some not needed comments in the LinuxKPI. Use the Linux source tree
to lookup documentation for the functions implemented in the LinuxKPI
instead.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-11-10 08:31:40 +00:00
Hans Petter Selasky
a7a3d0d170 Make the dma_alloc_coherent() function in the LinuxKPI NULL safe with regard
to the "dev" argument.

Submitted by:	Krishnamraju Eraparaju @ Chelsio
Sponsored by:	Chelsio Communications
MFC after:	1 week
2017-11-08 08:37:05 +00:00
Hans Petter Selasky
62d08fae13 Implement ioread16be() in the LinuxKPI.
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-11-01 12:34:18 +00:00
Hans Petter Selasky
b37c654140 Unconditionally include "opt_inet6.h" in the LinuxKPI.
This makes sure the INET6 macro gets properly defined,
also for kernel module builds.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-11-01 12:21:28 +00:00
Mark Johnston
bf4e2e5be1 Add get_random_{int,long} to the LinuxKPI.
Fix some whitespace bugs while here.

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D12588
2017-10-04 17:29:08 +00:00
Hans Petter Selasky
87a567f181 Make sure the timer belonging to the delayed work in the LinuxKPI
gets drained before invoking the work function. Else the timer
mutex may still be in use which can lead to use-after-free situations,
because the work function might free the work structure before returning.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-10-04 13:13:38 +00:00
Hans Petter Selasky
40f53a7cdc Add support for 32-bit compatibility IOCTLs in the LinuxKPI.
Bump the FreeBSD version to force recompilation of external
kernel modules due to structure change.

PR:		222504
Submitted by:	Greg V <greg@unrelenting.technology>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-09-22 08:12:08 +00:00
Hans Petter Selasky
62bae5d421 The LinuxKPI atomics do not have acquire nor release semantics unless
specified. Fix code to use READ_ONCE() and WRITE_ONCE() where appropriate.

Suggested by:		kib @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-18 13:37:14 +00:00
Hans Petter Selasky
1f7c7e1bec Only wire pages in the LinuxKPI instead of holding and wiring them.
This prevents the page daemon from regularly scanning the held pages.

Suggested by:		kib @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-18 13:23:59 +00:00
Hans Petter Selasky
c05238a681 Add support for shared memory functions to the LinuxKPI.
Obtained from:		kmacy @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-18 13:17:23 +00:00
Hans Petter Selasky
6263f8b78d Only search the scope ID in ip6_find_dev() for IPv6 addresses which
have a scope ID. Change size of the searched scope ID to the full
16-bits. There can typically be more than 255 interfaces.

Suggested by:		ae @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-09 12:50:12 +00:00
Hans Petter Selasky
f4cf3177a2 Resolve IPv6 scope ID issues when using ip6_find_dev() in the LinuxKPI.
Workaround problem that ifa_ifwithaddr() also matches the scope ID of
the IPv6 address when searching for a maching IPv6 address. For now
simply try all valid scope IDs until a match is found.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-09 07:21:27 +00:00
Hans Petter Selasky
6dec7efa83 Properly implement poll_wait() in the LinuxKPI. This prevents direct
use of the linux_poll_wakeup() function from unsafe contexts, which
can lead to use-after-free issues.

Instead of calling linux_poll_wakeup() directly use the wake_up()
family of functions in the LinuxKPI to do this.

Bump the FreeBSD version to force recompilation of external kernel modules.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-09 06:29:29 +00:00
Hans Petter Selasky
5b1cfc99cf Add more sanity checks to linux_fget() in the LinuxKPI. This prevents
returning pointers to file descriptors which were not created by the
LinuxKPI.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-09 06:04:05 +00:00
Mark Johnston
7e1a02baa5 Add some miscellaneous definitions to support the DRM drivers.
MFC after:	1 week
2017-08-22 17:13:28 +00:00
Mark Johnston
00d47e02ac Define prefetch() only if it hasn't already been defined.
MFC after:	1 week
2017-08-20 01:42:01 +00:00
Mark Johnston
faf7a6e18c Add a couple of trivial headers to the LinuxKPI.
MFC after:	1 week
2017-08-20 01:40:24 +00:00
Mark Johnston
1f1c4ea123 Add device resource management fields to struct device.
MFC after:	1 week
2017-08-16 06:33:48 +00:00
Hans Petter Selasky
ebf854802d Make sure the "vm_flags" and "vm_page_prot" fields get set correctly
in the VM area structure in the LinuxKPI when doing mmap() and that
unsupported bits are masked away.

While at it fix some redundant use of parenthesing inside some related
macros.

Found by:	KrishnamRaju ErapaRaju <Krishna2@chelsio.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-08-11 10:44:40 +00:00
Mark Johnston
0b7bd01a82 Add a specialized function for DRM drivers to register themselves.
Such drivers attach to a vgapci bus rather than directly to a pci bus. For
the rest of the LinuxKPI to work correctly in this case, we override the
vgapci bus' ivars with those of the grandparent.

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11932
2017-08-11 03:59:48 +00:00
Hans Petter Selasky
f6800be3ce Use integer type to pass around jiffies and/or ticks values in the
LinuxKPI because in FreeBSD ticks are 32-bit.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-08-10 13:05:40 +00:00
Hans Petter Selasky
4ef8a6301f Fixes for wait event in the LinuxKPI. These are regression issues
after r319757.

1) Correct the return value from __wait_event_common() from 1 to 0 in
case the timeout is specified as MAX_SCHEDULE_TIMEOUT. In the other
case __ret is zero and will be substituted in the last part of the
macro with the appropriate value before return.

2) Make sure the "timeout" argument is casted to "int" before
evaluating negativity. Else the signedness of a "long" might be
checked instead of the signedness of an integer.

3) The wait_event() function should not have a return value.

Found by:	KrishnamRaju ErapaRaju <Krishna2@chelsio.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-08-10 13:00:10 +00:00
Mark Johnston
c0589825fd Add round_jiffies_up(), local_clock() and __setup_timer() to the LinuxKPI.
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11871
2017-08-08 04:34:02 +00:00
Mark Johnston
48dac28d63 Add macros for defining attribute groups and for WO and RW attributes.
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11872
2017-08-08 04:30:22 +00:00
Alexander Motin
e1cf70fbab Fix hrtimer_active() in case of cancellation.
While there, switch to FreeBSD internal callout active status.

Reviewed by:	markj, hselasky
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D11900
2017-08-07 14:34:05 +00:00
Mark Johnston
f2ec04a394 Add subsystem vendor and device ID fields to struct pci_dev.
MFC after:	1 week
2017-08-03 21:14:46 +00:00
Hans Petter Selasky
2b79a966ab Fix LinuxKPI regression after r321920. The mda_unit and si_drv0 fields are not
wide enough to hold the full 64-bit dev_t. Instead use the "dev" field in
the "linux_cdev" structure to store and lookup this value.

While at it remove superfluous use of parenthesis inside the
MAJOR(), MINOR() and MKDEV() macros in the LinuxKPI.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-08-02 14:27:27 +00:00
Hans Petter Selasky
0991f0af6d Remove cycle_t type from the LinuxKPI similar to Linux upstream.
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-07-31 09:17:54 +00:00
Ryan Libby
4e64c62564 linuxkpi compiler.h: avoid gcc -Wunused-value in dummy expressions
It looks like the __acquire and __release macros are for the consumption
of static analysis tools and have no semantic effect.  Transform the
definitions from constant expressions to empty statements in order to
avoid -Wunused-value from gcc.

Likewise avoid future warnings for __chk_{user,io}_ptr, but with a cast
to void, because it looks like some linux kernel code may use those in
expression contexts.

Reviewed by:	hselasky, markj
Approved by:	markj (mentor)
Sponsored by:	Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11695
2017-07-22 21:29:44 +00:00
Mark Johnston
8d92040b75 Add some functions to jiffies.h.
Also add some checks for overflow to existing functions.

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11533
2017-07-13 18:27:22 +00:00
Mark Johnston
70bb2cdb04 Add some functions to math64.h in the LinuxKPI, and fix nearby style.
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11535
2017-07-09 23:14:51 +00:00
Mark Johnston
7a2553d9d7 Add a few functions to ktime.h in the LinuxKPI, and fix nearby style.
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11534
2017-07-09 23:13:08 +00:00
Mark Johnston
dac6b88a20 Add some helper definitions to fs.h in the LinuxKPI.
Add a field to struct linux_file to allow the creation of anonymous
shmem objects.

MFC after:	1 week
2017-07-08 20:11:06 +00:00
Mark Johnston
e51dd47b08 Fix the definitions of pgprot_{noncached,writecombine} after r316562.
MFC after:	1 week
2017-07-08 19:22:29 +00:00
Mark Johnston
aa2b6b4957 Add device_is_registered() to the LinuxKPI.
MFC after:	1 week
2017-07-08 18:53:02 +00:00
Mark Johnston
8cd823ecf7 Add TASK_COMM_LEN to the LinuxKPI.
MFC after:	1 week
2017-07-08 18:52:29 +00:00
Mark Johnston
88156ba581 Add some auxiliary types for device driver support.
MFC after:	1 week
2017-07-04 01:23:36 +00:00
Mark Johnston
6373e95eb6 Add a field for the class code to struct pci_driver.
Fill out some previously uninitialized fields as well.

MFC after:	1 week
2017-07-04 01:05:20 +00:00
Mark Johnston
ecf29cf148 Add some PCI class definitions.
MFC after:	1 week
2017-07-04 00:48:50 +00:00
Mark Johnston
b38dc0a16d Rename the "driver" field to "bsddriver" to avoid a name collision.
MFC after:	1 week
2017-07-04 00:30:48 +00:00
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
9ea3e14182 Implement parts of the hrtimer API in the LinuxKPI.
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11359
2017-06-26 16:28:46 +00:00
Mark Johnston
ee7c3198cd Add u64_to_user_ptr() to the LinuxKPI.
MFC after:	1 week
2017-06-25 19:30:20 +00:00
Mark Johnston
1fde37964d Add ns_to_ktime() to the LinuxKPI.
MFC after:	1 week
2017-06-25 19:28:01 +00:00
Mark Johnston
934277c59c Add a couple of macros to lockdep.h in the LinuxKPI.
MFC after:	1 week
2017-06-25 19:23:14 +00:00
Mark Johnston
0bfde0a7c7 Add the thaw_early method to struct dev_pm_ops in the LinuxKPI.
MFC after:	1 week
2017-06-25 19:21:59 +00:00
Mark Johnston
4eb1bcfc62 Add noop_lseek() to the LinuxKPI.
MFC after:	1 week
2017-06-25 19:20:12 +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