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

Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI
command register. The lazy BAR allocation code in FreeBSD sometimes
disables this bit when it detects a range conflict, and will re-enable
it on demand when a driver allocates the BAR. Thus, the bit is no longer
a reliable indication of capability, and should not be checked. This
results in the elimination of a lot of code from drivers, and also gives
the opportunity to simplify a lot of drivers to use a helper API to set
the busmaster enable bit.

This changes fixes some recent reports of disk controllers and their
associated drives/enclosures disappearing during boot.

Submitted by: jhb
Reviewed by: jfv, marius, achadd, achim
MFC after: 1 day

Add locking to the dpt(4) driver and mark it MPSAFE.
- Use device_printf() and device_get_unit() instead of storing the unit
number in the softc.
- Remove use of explicit bus space handles and tags.
- Remove the global dpt_softcs list and use devclass_get_device() instead.
- Use pci_enable_busmaster() rather than frobbing the PCI command register
directly.

Tested by: no one

Remove comments about creating DMA tags as children of the DMA tags of their
parent bus where the code has now been modified to do so.

Reviewed by: scottl

Convert a number of drivers to obtaining their parent DMA tag from their
PCI device attachment.

Prepare for future integration between CAM and newbus. xpt_bus_register
now takes a device_t to be the parent of the bus that is being created.
Most SIMs have been updated with a reasonable argument, but a few exceptions
just pass NULL for now. This argument isn't used yet and the newbus
integration likely won't be ready until after 7.0-RELEASE.

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@

Add MODULE_DEPENDS for cam, pci, mca, eisa and isa where needed.

PR: 106543
MFC after: 3 days

Remove bus_{mem,p}io.h and related code for a micro-optimization on i386
and amd64. The optimization is a trivial on recent machines.

Reviewed by: -arch (imp, marcel, dfr)

Remove unnecessary dpt_free().

Use BUS_PROBE_DEFAULT for pci probe return value

o nuke duplicate call of dpt_free when dpt_init fails
o nuke gratuitous null ptr check; softc can never be null in this routine

Noticed by: Coverity Prevent analysis tool
Reviewed by: mdodd

Convert callers to the new bus_alloc_resource_any(9) API.

Submitted by: Mark Santcroos <marks@ripe.net>
Reviewed by: imp, dfr, bde

Use PCIR_BAR(x) instead of PCIR_MAPS.

Glanced over by: imp, gibbs
Tested by: i386 LINT

Use __FBSDID().
Also some minor style cleanups.

Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.

Mega busdma API commit.

Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma. At the moment, this is used for the
asynchronous busdma_swi and callback mechanism. Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg. dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create(). The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms. The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by: tmm, gibbs

- Track resources in our softc.
- Sanitize dpt_alloc().
- Add helper functions for resource alloc/release.
- Add detach method.
- Relocate definition of devclass_t.
- Move some debugging output behind bootverbose.
- Implement an identify method for ISA devices
but don't use it right now.

Change BUS_SPACE_UNRESTRICTED (~0ul) to plain ~0 when used in the
'int nsegments' argument to bus_dma_tag_create(). ~0ul does not fit in
an int on machines with 64 bit longs.

Turn on interrupt-entropy harvesting for all/any mass storage devices
I could find. I have no doubt missed a couple.

Interrupt entropy harvesting is still conditional on the
kern.random.sys.harvest_interrupt sysctl.

(forced commit)

rev 1.21 was:

PR: 20706
Reported by: Damieon Stark <visigoth@telemere.net>
Submitted by: Jonathan Chen <jon@spock.org>

Allow the DPT pci attachment to share IRQ's

Submitted by: Jonathan Chen <jon@spock.org>

Use correct register values. This one was in aic7xxx and advansys too.

Use correct offset into register window.

Noticed by: Manfred Antar <mantar@pacbell.net>

- Convert dpt_pci.c to newbus.
- Add support for ISA based DPT adapters (this doesn't quite work yet).
- Sync dpt_eisa.c with my local copy.
- Simplify how EISA IDs are matched.
- Prototype.
- Formatting nits.
- Conform to how I do things in dpt_pci.c/dpt_isa.c.
- Modify dpt_scsi.c:dpt_alloc() to DTRT with newbus.
- Add some comments to dpt_scsi.c:dpt_pio_get_conf().
- Add additional check to dpt_scsi.c:dpt_get_conf().
- Add some useful error messages to dpt_scsi.c:dpt_init().

Switch over to the new location in sys/dev/dpt.

Fix a forgotten #include

$Id$ -> $FreeBSD$

Convert DEVFS hooks in (most) drivers to make_dev().

Diskslice/label code not yet handled.

Vinum, i4b, alpha, pc98 not dealt with (left to respective Maintainers)

Add the correct hook for devfs to kern_conf.c

The net result of this excercise is that a lot less files depends on DEVFS,
and devtoname() gets more sensible output in many cases.

A few drivers had minor additional cleanups performed relating to cdevsw
registration.

A few drivers don't register a cdevsw{} anymore, but only use make_dev().

Properly set the alignment argument to bus_dma_tag_create(). If we
don't care about the alignment, set it to 1, meaning single byte alignment.

Simplify the COMPAT_PCI_DRIVER/DATA_SET hack. We can add:
#define COMPAT_PCI_DRIVER(name,data) DATA_SET(pcidevice_set,data)
.. to 2.2.x and 3.x if people think it's worth it. Driver writers can do
this if it's not defined. (The reason for this is that I'm trying to
progressively eliminate use of linker_sets where it hurts modularity and
runtime load capability, and these DATA_SET's keep getting in the way.)

Use COMPAT_PCI_DRIVER() for registration if it exists. This shouldn't
hurt the driver portability to 3.x too much for where drivers are shared.

probe function changed from returning char * to const char *.

The "easy" fixes for compiling the kernel -Wunused: remove unreferenced static
and local variables, goto labels, and functions declared but not defined.

ahc_pci.c:
Disable DPARCKEN in the DSCOMMAND0 register on the aic7890/91/96/97.
Parity checking is broken for some chip/MB combinations and this
is the work around recommended by Adaptec.

dpt_pci.c:
Remove a superflous '{' that prevented DPT_ALLOW_MEMIO from working.

pcireg.h:
Add a definition for Parity Error Reponse bit in the PCI Space
command register.

Conver the DPT driver to CAM. The dpt_control interface is not yet
functional, but will be in another day or so.

Update DPT driver from 1.4.3 to 1.4.5

Submitted by: Simon Shapiro <shimon@simon-shapiro.org>

o Return error when the controller can't accept commands.
o Make driver less chatty on boot (only announce version under
bootverbose)

Submitted by: Simon Shapiro <shimon@simon-shapiro.org>

Add EISA support for DPT drivers
Submitted by: Matthew Dodd
Reviewd by: shimon@simon-shapiro.org (DPT author)

Removed unused #includes.

Staticize. (Diffs by me & and Simon in cooperation.)

Add #include "opt_devfs.h".

Add Simon Shapiro's DPT driver
this shouldn't break anything existing.
Userland utilities to follow.