Merge ^/head r323559 through r325504.

MFhead@r323635

Miscellaneous fixes and improvements to MMCCAM stack

* Demote the level of several debug messages to CAM_DEBUG_TRACE
* Add detection for SDHC cards that can do 1.8V. No voltage switch sequence

Miscellaneous fixes and improvements to MMCCAM stack

* Demote the level of several debug messages to CAM_DEBUG_TRACE
* Add detection for SDHC cards that can do 1.8V. No voltage switch sequence
is issued yet;
* Don't create a separate LUN for each SDIO function. We need just one to make
pass(4) attach;
* Remove obsolete mmc_sdio* files. SDIO functionality will be moved into the
separate device that will manage a new sdio(4) bus;
* Terminate probing if got no reply to CMD0;
* Make bcm2835 SDHCI host controller driver compile with 'option MMCCAM'.

Approved by: imp (mentor)
Differential Revision: https://reviews.freebsd.org/D12109

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Add and use a MMC_DECLARE_BRIDGE macro for declaring mmc(4) bridges
as kernel drivers and their dependency onto mmc(4); this allows for
incrementing the mmc(4) module version but also for entire omis

Add and use a MMC_DECLARE_BRIDGE macro for declaring mmc(4) bridges
as kernel drivers and their dependency onto mmc(4); this allows for
incrementing the mmc(4) module version but also for entire omission
of these bridge declarations for mmccam(4) in a single place, i. e.
in dev/mmc/bridge.h.

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o Another round fixes for mmc(4), mmcsd(4) and sdhci(4) regarding
comments, marking unused parameters as such, style(9), whitespace,
etc.
o In the mmc(4) bridges and sdhci(4) (bus) front-ends:

o Another round fixes for mmc(4), mmcsd(4) and sdhci(4) regarding
comments, marking unused parameters as such, style(9), whitespace,
etc.
o In the mmc(4) bridges and sdhci(4) (bus) front-ends:
- Remove redundant assignments of the default bus_generic_print_child
device method (I've whipped these out of the tree as part of r227843
once, but they keep coming back ...),
- use DEVMETHOD_END,
- use NULL instead of 0 for pointers.
o Trim/adjust includes.

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Add DMA sync operations around accessing the dwmmc descriptor ring. Even
with it maps as cache-coherent we still need to call bus_dmamap_sync.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBS

Add DMA sync operations around accessing the dwmmc descriptor ring. Even
with it maps as cache-coherent we still need to call bus_dmamap_sync.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation

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sys/dev: extend use of the howmany() macro when available.

We have a howmany() macro in the <sys/param.h> header that is
convenient to re-use as it makes things easier to read.

MFH

Sponsored by: The FreeBSD Foundation

Cleanup unnecessary semicolons from the kernel.

Found with devel/coccinelle.

MFH

Sponsored by: The FreeBSD Foundation

Fix fallout from r292180 (Dec 2015)... ensure that every driver which has
a DRIVER_MODULE() referencing mmc_driver has a MODULE_DEPEND() on mmc. This
is because the kernel linker only searches for s

Fix fallout from r292180 (Dec 2015)... ensure that every driver which has
a DRIVER_MODULE() referencing mmc_driver has a MODULE_DEPEND() on mmc. This
is because the kernel linker only searches for symbols in dependent modules,
so loading sdhci_pci (and other bus-flavors of sdhci) would fail when mmc
was not compiled into the kernel (even if you hand-loaded mmc first).

(Thanks to jilles@ for providing the vital clue about the kernel linker.)

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MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

MFH @r292599

This includes the pluggable TCP framework and other chnages to the
netstack to track for VNET stability.

Security: The FreeBSD Foundation

Move the DRIVER_MODULE() statements that declare mmc(4) to be a child of
the various bridge drivers out of dev/mmc.c and into the bridge drivers.

Requested by: jhb (almost two years ago; better l

Move the DRIVER_MODULE() statements that declare mmc(4) to be a child of
the various bridge drivers out of dev/mmc.c and into the bridge drivers.

Requested by: jhb (almost two years ago; better late than never)

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Merge from head

Sponsored by: Gandi.net

Merge from head

Finish merging from head, messed up in previous attempt

Merge r286744-r287584 from head.

Merge ^/head r286858 through r287489.

Finish allowing the dwmmc driver to be subclassed, move the softc to a new
header, along with the hwtype enum, device attach prototype, and driver_t.

Sponsored by: ABT Systems Ltd

Remove an variable we only ever write to, and stop assigning 0 to values
in the softc as it's the default value. The latter helps with subclassing
this driver.

Sponsored by: ABT Systems Ltd

Move dwmmc.h to dwmmc_reg.h. This is in preperation for adding support to
subclass the dwmmc driver to allow SoC specific attachments.

Sponsored by: ABT Systems Ltd

Only check for the bus frequency if it has not already been set, for
example through a driver running as a subclass of this.

Sponsored by: ABT Systems Ltd

There is no need to get the bus tag or handle.

Sponsored by: ABT Systems Ltd

Limit the speed to the bus frequency.

Sponsored by: ABT Systems Ltd