Commit Graph

219 Commits

Author SHA1 Message Date
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
Mark Johnston
9b6197df69 Include kmod.h from the LinuxKPI's module.h.
MFC after:	1 week
2017-06-21 18:15:47 +00:00
Mark Johnston
33baed9452 Add a lockdep macro to the LinuxKPI.
Also fix some nearby style issues.

MFC after:	1 week
2017-06-21 18:08:36 +00:00
Mark Johnston
8504aa9852 Add kthread parking support to the LinuxKPI.
Submitted by:	kmacy (original version)
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11264
2017-06-18 19:22:05 +00:00
Mark Johnston
4eb18346d1 Avoid including list.h in LinuxKPI headers.
list.h includes a number of FreeBSD headers as a workaround for the
LIST_HEAD name collision. To reduce pollution, avoid including list.h
in commonly used headers when it is not explicitly needed.

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11249
2017-06-18 16:43:57 +00:00
Mark Johnston
8239734079 Remove prototypes for unimplemented LinuxKPI functions.
MFC after:	1 week
2017-06-17 22:52:23 +00:00
Mark Johnston
f67b5de754 Implement pci_disable_device() in the LinuxKPI.
Submitted by:	kmacy
MFC after:	2 weeks
2017-06-09 19:57:27 +00:00
Mark Johnston
465659643b Augment wait queue support in the LinuxKPI.
In particular:
- Don't evaluate event conditions with a sleepqueue lock held, since such
  code may attempt to acquire arbitrary locks.
- Fix the return value for wait_event_interruptible() in the case that the
  wait is interrupted by a signal.
- Implement wait_on_bit_timeout() and wait_on_atomic_t().
- Implement some functions used to test for pending signals.
- Implement a number of wait_event_*() variants and unify the existing
  implementations.
- Unify the mechanism used by wait_event_*() and schedule() to put the
  calling thread to sleep.

This is required to support updated DRM drivers. Thanks to hselasky for
finding and fixing a number of bugs in the original revision.

Reviewed by:	hselasky
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D10986
2017-06-09 19:41:12 +00:00
Justin Hibbits
864092bcaa Remove ARM and MIPS from linuxkpi ioremap_attr definition
ARM and MIPS fail universe builds.

ARM and MIPS are missing the following:
* VM_MEMATTR_WRITE_THROUGH
* VM_MEMATTR_WRITE_COMBINING

Pointy-hat to:	jhibbits
2017-06-08 02:44:34 +00:00
Justin Hibbits
287e7a861a Add more #ifdef arch checks to the linuxkpi
arm, mips, and powerpc all implement pmap_mapdev_attr() and pmap_unmapdev(),
so add those archs to the checks.  powerpc also includes the atomic_swap_*()
functions, so add that to the supported list as well.  Not tested except by
compiling powerpc.

Reviewed by:	markj
2017-06-07 18:08:11 +00:00
Hans Petter Selasky
8600ba1aa9 Make sure the selrecord() function is only called from within system
polling contexts in the LinuxKPI.

After the kqueue() support was added to the LinuxKPI in r319409 the
Linux poll file operation will be used outside the system file polling
callback function, which can cause a NULL-pointer panic inside
selrecord() because curthread->td_sel is set to NULL. This patch moves
the selrecord() call away from poll_wait() and to the system file poll
callback function in the LinuxKPI, which essentially wraps the Linux
one. This is similar to what the cuse(3) module is currently doing.
Refer to sys/fs/cuse/*.[ch] for more details.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-06-01 16:49:48 +00:00
Hans Petter Selasky
a6b28ee02a Add generic kqueue() and kevent() support to the LinuxKPI character
devices. The implementation allows read and write filters to be
created and piggybacks on the poll() file operation to determine when
a filter should trigger. The piggyback mechanism is simply to check
for the EWOULDBLOCK or EAGAIN return code from read(), write() or
ioctl() system calls and then update the kqueue() polling state bits.
The implementation is similar to the one found in the cuse(3) module.
Refer to sys/fs/cuse/*.[ch] for more details.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-06-01 09:34:51 +00:00
Hans Petter Selasky
c2676069cb Implement print_hex_dump(), print_hex_dump_bytes() and
printk_ratelimited() in the LinuxKPI.

While at it fix the inclusion guard of printk.h to be similar to the
rest of the LinuxKPI header files.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-05-31 16:24:02 +00:00
Hans Petter Selasky
427cefde27 Properly implement idr_preload() and idr_preload_end() in the
LinuxKPI.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-05-31 16:08:30 +00:00
Hans Petter Selasky
dff36e69a1 Implement in_atomic() function in the LinuxKPI.
Obtained from:		kmacy @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-05-31 15:05:44 +00:00
Hans Petter Selasky
68b9f2f00c Don't acquire a reference on the VM-space when allocating the LinuxKPI
task structure to avoid deadlock when tearing down the VM object
during a process exit.

Found by:		markj @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-05-31 13:01:27 +00:00
Hans Petter Selasky
f5a9867b7d Fixes for refcounting "struct linux_file" in the LinuxKPI.
- Allow "struct linux_file" to be refcounted when its "_file" member
  is NULL by using its "f_count" field. The reference counts are
  transferred to the file structure when the file descriptor is
  installed.

- Add missing vdrop() calls for error cases during open().

- Set the "_file" member of "struct linux_file" during open. This
allows use of refcounting through get_file() and fput() with LinuxKPI
character devices.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-05-31 12:02:59 +00:00
Mark Johnston
cb564d2436 Add some miscellaneous definitions to support DRM drivers.
Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D10985
2017-05-30 17:16:08 +00:00