Commit Graph

268 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
Conrad Meyer
9657edd793 Move some other SI_SUB_INIT_IF initializations to SI_SUB_TASKQ
Drop the EARLY_AP_STARTUP gtaskqueue code, as gtaskqueues are now
initialized before APs are started.

Reviewed by:	hselasky@, jhb@
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12054
2017-08-18 18:55:07 +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
Hans Petter Selasky
8ea4441598 Make sure the linux_wait_event_common() function in the LinuxKPI properly
handles a timeout value of MAX_SCHEDULE_TIMEOUT which basically means there
is no timeout. This is a regression issue after r319757.

While at it change the type of returned variable from "long" to "int" to
match the actual return type.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-08-10 12:51:04 +00:00
Alexander Motin
3a150601e1 Fix few issues of LinuxKPI workqueue.
LinuxKPI workqueue wrappers reported "successful" cancellation for works
already completed in normal way.  This change brings reported status and
real cancellation fact into sync.  This required for drm-next operation.

Reviewed by:	hselasky (earlier version)
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D11904
2017-08-08 19:36:34 +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
Ruslan Bukin
ca20f8ec29 o Replace __riscv__ with __riscv
o Replace __riscv64 with (__riscv && __riscv_xlen == 64)

This is required to support new GCC 7.1 compiler.
This is compatible with current GCC 6.1 compiler.

RISC-V is extensible ISA and the idea here is to have built-in define
per each extension, so together with __riscv we will have some subset
of these as well (depending on -march string passed to compiler):

__riscv_compressed
__riscv_atomic
__riscv_mul
__riscv_div
__riscv_muldiv
__riscv_fdiv
__riscv_fsqrt
__riscv_float_abi_soft
__riscv_float_abi_single
__riscv_float_abi_double
__riscv_cmodel_medlow
__riscv_cmodel_medany
__riscv_cmodel_pic
__riscv_xlen

Reviewed by:	ngie
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D11901
2017-08-07 14:09:57 +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
Ian Lepore
d35f6548e6 Add inline functions to convert between sbintime_t and decimal time units.
Use them in some existing code that is vulnerable to roundoff errors.

The existing constant SBT_1NS is a honeypot, luring unsuspecting folks into
writing code such as long_timeout_ns*SBT_1NS to generate the argument for a
sleep call.  The actual value of 1ns in sbt units is ~4.3, leading to a
large roundoff error giving a shorter sleep than expected when multiplying
by the trucated value of 4 in SBT_1NS.  (The evil honeypot aspect becomes
clear after you waste a whole day figuring out why your sleeps return early.)
2017-07-29 17:00:23 +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
abf5c031bb Free existing per-thread task structs when unloading linuxkpi.ko.
They are otherwise leaked.

Reported and tested by:	ae
MFC after:		1 week
2017-07-09 22:57:00 +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
Hans Petter Selasky
611572285a Complete r320189 which allows a NULL VM fault handler in the LinuxKPI.
Instead of mapping a dummy page upon a page fault, map the page
pointed to by the physical address given by IDX_TO_OFF(vmap->vm_pfn).
To simplify the implementation use OBJT_DEVICE to implement our own
linux_cdev_pager_fault() instead of using the existing
linux_cdev_pager_populate().

Some minor code factoring while at it.

Reviewed by:	markj @
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-07-07 13:44:14 +00:00
Hans Petter Selasky
ea16525413 Fix a bug in synchronize RCU when the calling thread is bound to a CPU.
Set "td_pinned" to zero after "sched_unbind()" to prevent "td_pinned"
from temporarily becoming negative during "sched_bind()". This can
happen if "sched_bind()" uses "sched_pin()" and "sched_unpin()".

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-07-07 13:15:00 +00:00
Mark Johnston
d34188a0e1 Invoke suspend/resume methods from the driver pmops if available.
Obtained from:	kmacy (original version)
MFC after:	1 week
2017-07-04 18:44:14 +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
0a930cf078 Hold the PCI device list lock when removing an element.
MFC after:	1 week
2017-07-04 00:02:06 +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
47d8a7d4d1 Add missing lock destructor invocations to the LinuxKPI unload handler.
MFC after:	1 week
2017-06-21 18:17:32 +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
Hans Petter Selasky
cde3f930bc Allow the VM fault handler to be NULL in the LinuxKPI when handling a
memory map request. When the VM fault handler is NULL a return code of
VM_PAGER_BAD is returned from the character device's pager populate
handler. This fixes compatibility with Linux.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2017-06-21 14:38:52 +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