LinuxKPI: Remove sys/rman.h include from LKPI headers.

sys/rman.h defines `resource` structure which conflicts with the Linux
structure of the same name. To fix that remove reference to sys/rman.h
f

LinuxKPI: Remove sys/rman.h include from LKPI headers.

sys/rman.h defines `resource` structure which conflicts with the Linux
structure of the same name. To fix that remove reference to sys/rman.h
from linux/pci.h and move resource management code to linux_pci.c.
Update consumers which were depending on linux/pci.h pollution.

No functional changes intended.

Sponsored by: Serenity Cyber Security, LLC
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D42792

(cherry picked from commit 96ab16ebab6319dce9b3041961b0ab6e20a4fecc)

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sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

linuxkpi: Define `IRQ_NOTCONNECTED`

Reviewed by: manu
Approved by: manu
Differential Revision: https://reviews.freebsd.org/D38539

LinuxKPI: const argument to irq_set_affinity_hint()

irq_set_affinity_hint() takes a const mask argument and some drivers
pass it in as such where earlier implementations were more lenient.
Deal with

LinuxKPI: const argument to irq_set_affinity_hint()

irq_set_affinity_hint() takes a const mask argument and some drivers
pass it in as such where earlier implementations were more lenient.
Deal with it and __DECONST() the argument when passed to intr_setaffinity().

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D38242

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LinuxKPI: interrupt.h: add disable_irq_nosync(), irq_set_status_flags()

Add a dummy irq_set_status_flags() along with #defines passed by the driver.
Add disable_irq_nosync() as another wrapper to lk

LinuxKPI: interrupt.h: add disable_irq_nosync(), irq_set_status_flags()

Add a dummy irq_set_status_flags() along with #defines passed by the driver.
Add disable_irq_nosync() as another wrapper to lkpi_disable_irq().
Those are used by wireless drivers.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D38241

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linuxkpi: Define `tasklet_unlock_spin_wait()` as `tasklet_unlock_wait()`

Reviewed by: manu
Approved by: manu
Differential Revision: https://reviews.freebsd.org/D38080

LinuxKPI: implement irq_get_msi_desc()

Add irq_get_msi_desc() as a wrapper around a PCI function which will
allocate a single cached value (see comment on struct) for the
msi_desc requested if it do

LinuxKPI: implement irq_get_msi_desc()

Add irq_get_msi_desc() as a wrapper around a PCI function which will
allocate a single cached value (see comment on struct) for the
msi_desc requested if it doesn't exist yet and handle freeing it
when the PCI device goes away. We take the values from the ivars of
the native (FreeBSD) device.

While changing struct pci_dev also add the msi_cap field requested by
a wireless driver.

Bump __FreeBSD_version so these changes can be detected.

MFC after: 3 days
X-MFC: move fields to end of struct (alloc happens in linux_pci.c)
Reviewed by: hselasky (earlier version)
Differential Revision: https://reviews.freebsd.org/D37523

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LinuxKPI: tasklet add (*callback) support

In addition to (*func) tasklet also seems to have a (*callback) with
a different argument. Add support for this and add tasklet_setup()
as well for support

LinuxKPI: tasklet add (*callback) support

In addition to (*func) tasklet also seems to have a (*callback) with
a different argument. Add support for this and add tasklet_setup()
as well for support in more drivers.

The from_tasklet() definition is duplicated in the tree; hide it there
under #ifndef to avoid a re-definition. People should generally add
LinuxKPI bits to linuxkpi rather than private files if they also rely
on other LinuxKPI bits.

X-MFC: DO NOT MFC, space allocated by drivers not us.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D37216

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LinuxKPI: add devm_request_irq()

Add devm_request_irq() needed by a driver. Turns out all we need
is a wrapper with the right arguments to lkpi_request_irq().

MFC after: 3 days
Reviewed by: emaste

LinuxKPI: add devm_request_irq()

Add devm_request_irq() needed by a driver. Turns out all we need
is a wrapper with the right arguments to lkpi_request_irq().

MFC after: 3 days
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D37217

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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

LinuxKPI: Hide some internal symbols in linux_interrupt.c

Reviewed by: hselasky, manu
Differential revision: https://reviews.freebsd.org/D32168

LinuxKPI: Remove FreeBSD struct resource from all LKPI headers

except linux/pci.h to avoid conflicts with Linux version.
This allows to #define resource in drm-kmod globally and strip some #ifdef-s

LinuxKPI: Remove FreeBSD struct resource from all LKPI headers

except linux/pci.h to avoid conflicts with Linux version.
This allows to #define resource in drm-kmod globally and strip some #ifdef-s

Reviewed by: hselasky, manu
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D31673

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LinuxKPI: enhance the irq KPI for managed and threaded operations.

Move request_irq() to an internal function which serves request_irq()
and the newly added request_threaded_irq() and devm_request_t

LinuxKPI: enhance the irq KPI for managed and threaded operations.

Move request_irq() to an internal function which serves request_irq()
and the newly added request_threaded_irq() and devm_request_threaded_irq().
Likewise factor out parts of free_irq() to also be used with
devm_free_irq(). Add the storage and call to a thread_handler in case
of IRQ_WAKE_THREAD.
This is needed for the iwlwifi driver.

Sponsored by: The FreeBSD Foundation
MFC after: 10 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D30549

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LinuxKPI: add irq_set_affinity_hint()

Add an implementation for irq_set_affinity_hint() to linux/interrupt.h
and include linux/hardirq.h for synchronize_irq() as needed by
wireless drivers.

Sponsor

LinuxKPI: add irq_set_affinity_hint()

Add an implementation for irq_set_affinity_hint() to linux/interrupt.h
and include linux/hardirq.h for synchronize_irq() as needed by
wireless drivers.

Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D30427

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linuxkpi: Introduce tasklet_disable_nosync()

This is needed for the drm-kmod 5.5 update.

Reviewed by: hselasky (src)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D30024

Fix broken DECLARE_TASKLET() macro after r347852.

MFC after: 1 week
Sponsored by: Mellanox Technologies

Implement pci_enable_msi() and pci_disable_msi() in the LinuxKPI.
This patch makes the DRM graphics driver in ports usable on aarch64.

Submitted by: Greg V <[email protected]>
Differential

Implement pci_enable_msi() and pci_disable_msi() in the LinuxKPI.
This patch makes the DRM graphics driver in ports usable on aarch64.

Submitted by: Greg V <[email protected]>
Differential Revision: https://reviews.freebsd.org/D21008
MFC after: 1 week
Sponsored by: Mellanox Technologies

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LinuxKPI: Updates to tasklets for Linux 5.0.

DRM drivers expect tasklets to have a counter for enable/disable calls.
Also, add a few more tasklet locking functions.

This patch is part of D19565

Re

LinuxKPI: Updates to tasklets for Linux 5.0.

DRM drivers expect tasklets to have a counter for enable/disable calls.
Also, add a few more tasklet locking functions.

This patch is part of D19565

Reviewed by: hps
Approved by: imp (mentor), hps
MFC after: 1 week

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Move the IRQ_RETVAL() and irqreturn definitions to irqreturn.h in the
LinuxKPI to be compatible with Linux. No functional change.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]

Move the IRQ_RETVAL() and irqreturn definitions to irqreturn.h in the
LinuxKPI to be compatible with Linux. No functional change.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies

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Add checks for valid IRQ tag before setting up or tearing down an interrupt
handler in the LinuxKPI. This is needed when the interrupt handler is disabled
before freeing the interrupt.

MFC after: 1

Add checks for valid IRQ tag before setting up or tearing down an interrupt
handler in the LinuxKPI. This is needed when the interrupt handler is disabled
before freeing the interrupt.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies

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Implement tasklet_enable() and tasklet_disable() in the LinuxKPI.

MFC after: 1 week
Requested by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies

Implement enable_irq() and disable_irq() in the LinuxKPI.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies

Add support for LinuxKPI tasklets.

Tasklets are implemented using a taskqueue and a small statemachine on
top. The additional statemachine is required to ensure all LinuxKPI
tasklets get serialized.

Add support for LinuxKPI tasklets.

Tasklets are implemented using a taskqueue and a small statemachine on
top. The additional statemachine is required to ensure all LinuxKPI
tasklets get serialized. FreeBSD taskqueues do not guarantee
serialisation of its tasks, except when there is only one worker
thread configured.

MFC after: 1 week
Sponsored by: Mellanox Technologies

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Prefix some _pci_xxx() functions in the Linux KPI with linux_ and make
sure the IRQ number used by these functions is unsigned.

Sponsored by: Mellanox Technologies
MFC after: 1 week

LinuxKPI style changes:
- Properly prefix internal functions with "linux_" instead of only a
single underscore to avoid future namespace collisions.
- Make some functions global instead of inline t

LinuxKPI style changes:
- Properly prefix internal functions with "linux_" instead of only a
single underscore to avoid future namespace collisions.
- Make some functions global instead of inline to ease debugging and
to avoid unnecessary code duplication.
- Remove no longer existing kthread_create() function's prototype.

MFC after: 1 week
Sponsored by: Mellanox Technologies

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