and not only the software cache of that register. Else
pci_channel_offline() won't detect that the PCI device is gone when
using the LinuxKPI.
MFC after: 1 week
Sponsored by: Mellanox Technologies
This function convert a char * to a u16.
Simply use strtoul and cast to compare for ERANGE
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24996
This macros swap an rcu pointer with a normal pointer.
The condition only seems to be used for debug/warning under linux, ignore
for now.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24954
Only add check_add_overflow and check_mul_overflow as those are the only
two needed function by DRM v5.3.
Both gcc and clang have builtin to do this check so use them directly
but throw an error if the compiler/code checker doesn't support this builtin.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselsasky
Differential Revision: https://reviews.freebsd.org/D25015
mod_timer is supposed to return 1 if the modified timer was pending, which
is exactly what callout_reset does so return the value after checking
that it's a correct one in case the api change.
del_timer_sync returns int so add a function and handle that.
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24983
Implement some refcount functions needed by drm.
Just use the atomic_t struct and functions from linuxkpi for simplicity.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselsasky
Differential Revision: https://reviews.freebsd.org/D24985
The same_type macro simply wraps around builtin_types_compatible_p which
exist for both GCC and CLANG, which returns 1 if both types are the same.
The __must_be_array macros returns 1 if the argument is an array.
This is needed for DRM v5.3
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24953
This is just a wrapper around arc4random_uniform
Needed by DRM v5.3
Sponsored-by: The FreeBSD Foundation
Reviewed by: cem, hselasky
Differential Revision: https://reviews.freebsd.org/D24961
The rcu_work function helps to queue some work after waiting for a grace
period.
This is needed by DRM drivers.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24942
Since handlers are call in a thread context we can simply use a workqueue
to emulate those functions.
The DRM code was patched to do that already, having it in linuxkpi allows us
to not patch the upstream code.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24859
pci_dev_present shows if a set of pci ids are present in the system.
It just wraps pci_find_device.
Needed by DRMv5.2
Submitted by: Austing Shafer (ashafer@badland.io)
Differential Revision: https://reviews.freebsd.org/D24796
The only difference with init_waitqueue_head is that the name and the
lock class key are provided but we don't use those so use init_waitqueue_head
directly.
Sponsored-by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24861
This calculate the offset of the end of the member in the given struct.
Needed by DRM in Linux v5.3
Sponsored-by: The FreeBSD Foudation
Differential Revision: https://reviews.freebsd.org/D24849
Same as mutex_init, the lock_class_key argument seems to be only used for
debug in Linux, simply ignore it for now.
Needed by DRM in Linux v5.3
Sponsored-by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24848
This function decrement the counter and if the result is 0 it acquires
the mutex and returns 1, if not it simply returns 0.
Needed by DRM from Linux v5.3
Sponsored-by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24847
This is a simple call to kmallock_array/kfree, therefore include linux/slab.h as
this is where the kmalloc_array/kfree definition is.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselsasky
Differential Revision: https://reviews.freebsd.org/D24794
bitmap_copy simply copy the bitmaps, no idea why it exists.
bitmap_andnot is similar to bitmap_and but uses !src2.
Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24782
Those function are use to map/unmap io region of a pci device.
Different resource can be mapped depending on the bar so use a
tailq to store them all.
Sponsored-by: The FreeBSD Foundation
Reviewed by: emaste, hselasky
Differential Revision: https://reviews.freebsd.org/D24696
in the LinuxKPI.
This allows synchronize RCU to be used inside a SRCU read section.
No functional change intended.
Bump the __FreeBSD_version to force recompilation of external kernel modules.
PR: 242272
MFC after: 1 week
Sponsored by: Mellanox Technologies
pci_iov_if.h was added to pci.h, but none of the kms-drm branches have
that. Rather than play whack a mole with the branches, move its inclusion to
linux_pci.c which is the only part of the code that needs it now.
Longer term, other solutions will be needed, but this gives us time to get those
deployed on all the supported versions.
Mesa's drm_syncobj usage, in the LinuxKPI.
While at it optimise the jiffies conversion functions to avoid repeated
and constant calculations.
Submitted by: Greg V <greg@unrelenting.technology>
Differential Revision: https://reviews.freebsd.org/D23846
MFC after: 1 week
Sponsored by: Mellanox Technologies
For drmkpi (D23085) we don't want the Linux struct file as we don't emulate
everything. Also the prototypes should be in shmem_fs.h to have 100%
compatibility with Linux.
Reviewed by: hselasky
MFC after: Maybe
Differential Revision: https://reviews.freebsd.org/D23764
This function test if the string str begins with the string pointed
at by prefix.
Reviewed by: hselasky
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23767
This function just test if the element is the first of the list.
Reviewed by: hselasky
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23766
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked). Use it in
preparation for a general review of all nodes.
This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.
Reviewed by: hselasky, kib, zeising
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D23631
