arm64: Implement busdma bits for KMSAN

This works identically to amd64. In particular, only the
bus_dma_bounce_impl busdma implementation handles KMSAN at the moment.

MFC after: 2 weeks
Sponsored

arm64: Implement busdma bits for KMSAN

This works identically to amd64. In particular, only the
bus_dma_bounce_impl busdma implementation handles KMSAN at the moment.

MFC after: 2 weeks
Sponsored by: Klara, Inc.
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D43157

show more ...

busdma: tidy bus_dma_run_filter() functions

After removing filter functionality, the naming doesn't clearly
represent what the function does, so try to address this. Include some
code clarity and st

busdma: tidy bus_dma_run_filter() functions

After removing filter functionality, the naming doesn't clearly
represent what the function does, so try to address this. Include some
code clarity and style improvements.

Create a common version in subr_busdma_bounce.c, used by most
implementations. powerpc still needs its own version of the function,
due to its dmat->iommu == NULL check.

No functional change intended.

Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42896

show more ...

busdma: remove parent tag tracking

Without filter functions, we do not need to keep track of tag ancestry.
All inheritance of the parent tag's parameters occurs when creating the
new child tag.

Rev

busdma: remove parent tag tracking

Without filter functions, we do not need to keep track of tag ancestry.
All inheritance of the parent tag's parameters occurs when creating the
new child tag.

Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42895

show more ...

busdma: kill filter functionality internally

Address filter functions are unused, unsupported, and now rejected.
Simplify some busdma code by removing filter functionality completely.

Note that the

busdma: kill filter functionality internally

Address filter functions are unused, unsupported, and now rejected.
Simplify some busdma code by removing filter functionality completely.

Note that the chains of parent tags become useless, and will be cleaned
up in the next commit.

No functional change intended.

Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42894

show more ...

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

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

bus_dma: Deduplicate locking helper functions.

- Move busdma_lock_mutex to subr_bus_dma.c.

- Move _busdma_lock_dflt to subr_bus_dma.c. This function was named a
couple of different things previo

bus_dma: Deduplicate locking helper functions.

- Move busdma_lock_mutex to subr_bus_dma.c.

- Move _busdma_lock_dflt to subr_bus_dma.c. This function was named a
couple of different things previously. It is not a public API but
an internal helper used in place of a NULL pointer. The prototype
is in <sys/bus_dma.h> as not all backends include
<sys/bus_dma_internal.h>.

Reviewed by: kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D33694

show more ...

Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights

These ones were unambiguous cases where the Foundation was the only
listed copyright holder (in the associated license block).

S

Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights

These ones were unambiguous cases where the Foundation was the only
listed copyright holder (in the associated license block).

Sponsored by: The FreeBSD Foundation

show more ...

o Add the domain member to the struct bus_dma_tag_common as required by
busdma_iommu.c.
o Add tag_set_domain() pointer to the struct bus_dma_impl as well.

Sponsored by: Innovate DSbD

MFHead @348740

Sponsored by: The FreeBSD Foundation

Allow loading the same DMA address multiple times without any prior
unload for the LinuxKPI.

Reviewed by: kib, zeising
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.or

Allow loading the same DMA address multiple times without any prior
unload for the LinuxKPI.

Reviewed by: kib, zeising
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20181

show more ...

arm64: Implement busdma bits for KMSAN

This works identically to amd64. In particular, only the
bus_dma_bounce_impl busdma implementation handles KMSAN at the moment.

MFC after: 2 weeks
Sponsored

arm64: Implement busdma bits for KMSAN

This works identically to amd64. In particular, only the
bus_dma_bounce_impl busdma implementation handles KMSAN at the moment.

MFC after: 2 weeks
Sponsored by: Klara, Inc.
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D43157

show more ...

busdma: tidy bus_dma_run_filter() functions

After removing filter functionality, the naming doesn't clearly
represent what the function does, so try to address this. Include some
code clarity and st

busdma: tidy bus_dma_run_filter() functions

After removing filter functionality, the naming doesn't clearly
represent what the function does, so try to address this. Include some
code clarity and style improvements.

Create a common version in subr_busdma_bounce.c, used by most
implementations. powerpc still needs its own version of the function,
due to its dmat->iommu == NULL check.

No functional change intended.

Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42896

show more ...

busdma: remove parent tag tracking

Without filter functions, we do not need to keep track of tag ancestry.
All inheritance of the parent tag's parameters occurs when creating the
new child tag.

Rev

busdma: remove parent tag tracking

Without filter functions, we do not need to keep track of tag ancestry.
All inheritance of the parent tag's parameters occurs when creating the
new child tag.

Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42895

show more ...

busdma: kill filter functionality internally

Address filter functions are unused, unsupported, and now rejected.
Simplify some busdma code by removing filter functionality completely.

Note that the

busdma: kill filter functionality internally

Address filter functions are unused, unsupported, and now rejected.
Simplify some busdma code by removing filter functionality completely.

Note that the chains of parent tags become useless, and will be cleaned
up in the next commit.

No functional change intended.

Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42894

show more ...

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

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

bus_dma: Deduplicate locking helper functions.

- Move busdma_lock_mutex to subr_bus_dma.c.

- Move _busdma_lock_dflt to subr_bus_dma.c. This function was named a
couple of different things previo

bus_dma: Deduplicate locking helper functions.

- Move busdma_lock_mutex to subr_bus_dma.c.

- Move _busdma_lock_dflt to subr_bus_dma.c. This function was named a
couple of different things previously. It is not a public API but
an internal helper used in place of a NULL pointer. The prototype
is in <sys/bus_dma.h> as not all backends include
<sys/bus_dma_internal.h>.

Reviewed by: kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D33694

show more ...

Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights

These ones were unambiguous cases where the Foundation was the only
listed copyright holder (in the associated license block).

S

Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights

These ones were unambiguous cases where the Foundation was the only
listed copyright holder (in the associated license block).

Sponsored by: The FreeBSD Foundation

show more ...

o Add the domain member to the struct bus_dma_tag_common as required by
busdma_iommu.c.
o Add tag_set_domain() pointer to the struct bus_dma_impl as well.

Sponsored by: Innovate DSbD

MFHead @348740

Sponsored by: The FreeBSD Foundation

Allow loading the same DMA address multiple times without any prior
unload for the LinuxKPI.

Reviewed by: kib, zeising
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.or

Allow loading the same DMA address multiple times without any prior
unload for the LinuxKPI.

Reviewed by: kib, zeising
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20181

show more ...

MFhead@r320180

Merge ^/head r319973 through 321382.

Merge ^/head r320398 through r320572.

Clean up MD pollution of bus_dma.h:

--Remove special-case handling of sparc64 bus_dmamap* functions.
Replace with a more generic mechanism that allows MD busdma
implementations to generate inlin

Clean up MD pollution of bus_dma.h:

--Remove special-case handling of sparc64 bus_dmamap* functions.
Replace with a more generic mechanism that allows MD busdma
implementations to generate inline mapping functions by
defining WANT_INLINE_DMAMAP in <machine/bus_dma.h>. This
is currently useful for sparc64, x86, and arm64, which all
implement non-load dmamap operations as simple wrappers
around map objects which may be bus- or device-specific.

--Remove NULL-checked bus_dmamap macros. Implement the
equivalent NULL checks in the inlined x86 implementation.
For non-x86 platforms, these checks are a minor pessimization
as those platforms do not currently allow NULL maps. NULL
maps were originally allowed on arm64, which appears to have
been the motivation behind adding arm[64]-specific barriers
to bus_dma.h, but that support was removed in r299463.

--Simplify the internal interface used by the bus_dmamap_load*
variants and move it to bus_dma_internal.h

--Fix some drivers that directly include sys/bus_dma.h
despite the recommendations of bus_dma(9)

Reviewed by: kib (previous revision), marius
Differential Revision: https://reviews.freebsd.org/D10729

show more ...

Catch up with HEAD (r280229-r284686).