Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

sys: use our nitems() macro when param.h is available.

This should cover all the remaining cases in the kernel.

Discussed in: freebsd-current

Provide necessary includes.

The NetBSD Foundation has granted permission to remove clause 3 and 4 from
the software.

Obtained from: NetBSD

o Move the MODULE_DEPEND() for cam(4) from the esp_sbus.c front-end to
the ncr53c9x.c core where it actually belongs so future front-ends
don't need to add it.
o Use the correct OFW property when looking for the initiator ID of the
SBus device.
o Don't specify an alignment when creating the parent DMA tag for
SUNW,fas; their DMA engine doesn't require an alignment constraint
and it's no inherited by the child DMA tags anyway (which probably
is a bug though).
o Drop the superfluous sc_maxsync and use sc_minsync instead. The
former apparently was added due to a confusion with the maximum
frequency used in cam(4), which basically corresponds to the
inverse of minimum sync period.
o Merge ncr53c9x.c from NetBSD:
1.116: NCRDMA_SETUP() should be called before NCR_SET_COUNT() and
NCRCMD_DMA command in ncr53c9x_select().
1.125: free allocated resources on detach.
o Static'ize ncr53c9x_action(), ncr53c9x_init() and ncr53c9x_reset()
as these are not required outside of ncr53c9x.c.
o In ncr53c9x_attach() don't leak the device mutex in case attaching
fails.
o Register an asynchronous notification handler so in case cam(4)
reports a lost device we can cancel outstanding commands and
restore the default parameters for the target in question.
o For FAS366 correctly support 16-bit target IDs and let it know
that we use 32-bit transfers.
o Overhaul the negotiation of transfer settings. This includes
distinguishing between current and goal transfer settings of the
target so we can renegotiate their goal settings when necessary
and correcting the order in which tagged, wide and synchronous
transfers are negotiated.
o If we are requesting sense, force a renegotiation if we are
currently using anything different from asynchronous at 8 bit
as the target might have lost our transfer negotiations.
o In case of an XPT_RESET_BUS just directly call ncr53c9x_init()
instead of issuing a NCRCMD_RSTSCSI, which in turn will issue an
interrupt that is treated as an unexpected SCSI bus reset by
ncr53c9x_intr() and thus calls ncr53c9x_init(). Remove the now
no longer used ncr53c9x_scsi_reset().
o Correct an off-by-one error when setting cpi->max_lun.
o In replace printf(9) with device_printf(9) calls where appropriate
and in ncr53c9x_action() remove some unnecessarily verbose messages.
o In ncr53c9x_sched() use TAILQ_FOREACH() instead of reimplementing
it and consolidate two tagging-related target info checks into one.
o In ncr53c9x_done() set the CAM status to CAM_SCSI_STATUS_ERROR when
appropriate, respect CAM_DIS_AUTOSENSE and teach it to return SCSI
status information.
o In ncr53c9x_dequeue() ensure the tags are cleared.
o Use ulmin() instead of min() where appropriate.
o In ncr53c9x_msgout() consistently use the reset label.
o When we're interrupted during a data phase and the DMA engine is
still active, don't panic but reset the core and the DMA engine as
this should be sufficient. Also, the typical problem for triggering
this was the lack of renegotiation when requesting sense.
o Correctly handle DEVICE RESETs.
o Adapt the locking of esp(4) to MPSAFE cam(4). This includes moving
the calls of lsi64854_attach() to the bus front-ends so it can pass
the esp(4) mutex to bus_dma_tag_create(9).
o Change the LSI64854 driver to not create a DMA tag and map for the
Ethernet channel as le(4) will handle these on its own as well as
sync and unload the DMA maps for the SCSI and parallel port channel
after a DMA transfer.
o Cam(4)'ify some NetBSD-centric comments.
o Use bus_{read,write}_*(9) instead of bus_space_{read,write}_*(9)
and take advantage of rman_get_rid(9) in order to save some softc
members.

Reviewed by: scottl
MFC after: 1 month

o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@

Remove BUS_DMA_WAITOK from bus_dma_tag_create() invocations as it's
no valid flag there.

- Revert if_le_pci.c rev. 1.2; although lnc(4) is now gone, le_pci_probe()
still should return BUS_PROBE_LOW_PRIORITY instead of BUS_PROBE_DEFAULT
in order to give pcn(4) a chance to attach in case it probes after le(4).
- Rearrange the code related to RX interrupt handling so that ownership of
RX descriptors is immediately returned to the NIC after we have copied
the data of the hardware, allowing the NIC to already reuse the descriptor
while we are processing the data in ifp->if_input(). This results in a
small but measurable increase in RX throughput.
As a side-effect, this moves the workaround for the LANCE revision C bug
to am7900.c (still off by default as I doubt we will actually encounter
such an old chip in a machine running FreeBSD) and the workaround for the
bug in the VMware PCnet-PCI emulation to am79000.c, which is now also
only compiled on i386 (resulting in a small increase in RX throughput on
the other platforms).
- Change the RX interrupt handlers so that the descriptor error bits are
only check once in case there was no error instead of twice (inspired
by the NetBSD pcn(4), which additionally predicts the error branch as
false).
- Fix the debugging output of the RX and TX interrupt handlers; while
looping through the descriptors print info about the currently processed
one instead of always the previously last used one; remove pointless
printing of info about the RX descriptor bits after their values were
reset.
- Create the DMA tags used to allocate the memory for the init block,
descriptors and packet buffers with the alignment the respective NIC
actually requires rather than using PAGE_SIZE unconditionally. This might
as well fix the alignment of the memory as it seems we do not inherit
the alignment constraint from the parent DMA tag.
- For the PCI variants double the number of RX descriptors and buffers
from 8 to 16 as this minimizes the number of RX overflows im seeing with
one NIC-mainboard combination. Nevertheless move reporting of overflows
under debugging as they seem unavoidable with some crappy hardware.
- Set the software style of the PCI variants to ILACC rather than PCnet-PCI
as the former is was am79000.c actually implements. Should not make a
difference for this driver though.
- Fix the driver name part in the MODULE_DEPEND of the PCI front-end for
ether.
- Use different device descriptions for PCnet-Home and PCnet-PCI.
- Fix some 0/NULL confusion in lance_get().
- Use bus_addr_t for sc_addr and bus_size_t for sc_memsize as these are
more appropriate than u_long for these.
- Remove the unused LE_DRIVER_NAME macro.
- Add a comment describing why we are taking the LE_HTOLE* etc approach
instead of using byteorder(9) functions directly.
- Improve some comments and fix some wording.

MFC after: 2 weeks

Add le(4), a driver for AMD Am7900 LANCE and Am79C9xx PCnet NICs ported
from NetBSD. This driver actually can replace lnc(4). Advantages over
lnc(4) are:
- Cleaner and more flexible regarding MD needs.
- Endian-clean and MPSAFE.
- Supports ALTQ, VLAN_MTU, ifmedia.
- Uses 32bit DMA for the PCI variants.

This commit includes front-ends for the dma(4) pseudo-bus found on SBus-
based sparc64 machines (thus supports the on-board LANCE in Sun Ultra 1)
and PCI. In order to actually replace lnc(4), the front-ends for ISA and
the PC98 CBUS would have to be added but for which I don't have hardware
to test.

Reviewed and some improvements by: yongari
Tested on: i386, sparc64