Commit Graph

13 Commits

Author SHA1 Message Date
Warner Losh
ab581af779 Eliminate unused argument in PCMCIA_CARD macro.
Provide a backwards compatible way to have the extra macro by defining
PCCARD_API_LEVEL 5 before including pccarddevs for driver writers that
want/need to have the same driver on 5 and 6 with pccard attachments.

Approved by: re (dwhite)
2005-06-24 14:36:54 +00:00
Warner Losh
973bfe6c4a MFp4: overhaul of resource allocation
Rather than have a twisty maze of special case allocations, move
instead to a data driven allocation.  This should be the most robust
way to cope with the resource problems that the multiplicity of ways
of encoding 5 registers that have the misfortune of not being a power
of 2 nor contiguous.

Also, make it less impossible that pccard will work.  I've not been able
to get my libretto floppy working, but it now fails later than before.

phk and I had similar ideas on this during the 5.3 release cycle, but
it wasn't until recently that I could test more than one allocation
scenario.

MFC After: 1 month (5.4 if possible, 5.5 if not)
2005-01-19 07:46:38 +00:00
Warner Losh
ac673f9a82 Use the standard FreeBSD license 2005-01-11 06:24:40 +00:00
Warner Losh
b4046cd721 Checkpoint the fdc resource changes:
o Allow for up to 3 resource I/O ranges to be given for the floppy
  controller, rather than just two that are allowed for now.
o Make sure that we can work with either a base address of 0x3f0 or 0x3f2.
o Create new inline functions to access the YE DATA's unique BDCR register.
o Update pccard attachment to add the fd device.
o Do some minor style(9) polishing.

# I'm guessing that the fdc pccard attachment broke some time ago, since
# there are a number of issues with it still.
2004-09-14 07:06:49 +00:00
Poul-Henning Kamp
1b67be7b75 Rewrite of the floppy driver to make it MPsafe & GEOM friendly:
Centralize the fdctl_wr() function by adding the offset in
	the resource to the softc structure.

	Bugfix: Read the drive-change signal from the correct place:
	same place as the ctl register.

	Remove the cdevsw{} related code and implement a GEOM class.

	Ditch the state-engine and park a thread on each controller
	to service the queue.

	Make the interrupt FAST & MPSAFE since it is just a simple
	wakeup(9) call.

	Rely on a per controller mutex to protect the bioqueues.
	Grab GEOMs topology lock when we have to and Giant when
	ISADMA needs it.  Since all access to the hardware is
	isolated in the per controller thread, the rest of the
	driver is lock & Giant free.

	Create a per-drive queue where requests are parked while
	the motor spins up.  When the motor is running the requests
	are purged to the per controller queue.  This allows
	requests to other drives to be serviced during spin-up.

	Only setup the motor-off timeout when we finish the last
	request on the queue and cancel it when a new request
	arrives.  This fixes the bug in the old code where the motor
	turned off while we were still retrying a request.

	Make the "drive-change" work reliably.  Probe the drive on
	first opens.  Probe with a recal and a seek to cyl=1 to
	reset the drive change line and check again to see if we
	have a media.

	When we see the media disappear we destroy the geom provider,
	create a new one, and flag that autodetection should happen
	next time we see a media (unless a specific format is configured).

	Add sysctl tunables for a lot of drive related parameters.
	If you spend a lot of time waiting for floppies you can
	grab the i82078 pdf from Intels web-page and try tuning
	these.

	Add sysctl debug.fdc.debugflags which will enable various
	kinds of debugging printfs.

	Add central definitions of our well known floppy formats.

	Simplify datastructures for autoselection of format and
	call the code at the right times.

	Bugfix: Remove at least one piece of code which would have
	made 2.88M floppies not work.

	Use implied seeks on enhanced controllers.

	Use multisector transfers on all controllers.  Increase
	ISADMA bounce buffers accordingly.

	Fall back to single sector when retrying.  Reset retry count
	on every successful transaction.

	Sort functions in a more sensible order and generally tidy
	up a fair bit here and there.

	Assorted related fixes and adjustments in userland utilities.

WORKAROUNDS:
	Do allow r/w opens of r/o media but refuse actual write
	operations.  This is necessary until the p4::phk_bufwork
	branch gets integrated (This problem relates to remounting
	not reopening devices, see sys/*/*/${fs}_vfsops.c for details).

	Keep PC98's private copy of the old floppy driver compiling
	and presumably working (see below).

TODO (planned)

	Move probing of drives until after interrupts/timeouts work
	(like for ATA/SCSI drives).

TODO (unplanned)

	This driver should be made to work on PC98 as well.

	Test on YE-DATA PCMCIA floppy drive.

	Fix 2.88M media.

This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
Nate Lawson
0bdf1a5508 Clean up resources properly if attach fails. Always reset ISA drives on
probe.
2004-07-15 16:41:07 +00:00
Nate Lawson
6f41379967 Add a comment separator. 2004-07-14 22:09:32 +00:00
Warner Losh
aad6416500 Fix the pccard attachment to have a chance of working.
Move the resource allocation into the bus front ends.
2004-07-14 06:59:58 +00:00
Warner Losh
c3ae4c40ef Don't depend on implicit include of machine/bus.h in sys/rman.h, but instead
explicitly include it.
2004-07-13 02:42:23 +00:00
Nate Lawson
bd0416f2d2 Remove unnecessary softc bzero calls. 2004-07-12 21:15:36 +00:00
Nate Lawson
752d473505 Update in preparation for adding the ACPI attachment.
* Add an fdtype ivar.  This will be the equivalent of fd->type.
* Move enabling the FIFO to the end of attach.
* Unify reset code into fdc_initial_reset().
* Add fdc_write_ivar().
* Update isa and pccard attachments accordingly.
* Set the flags unconditionally in probe since they may be overridden by
  other probe routines.  Both before and now, we're depending on probe
  being called a final time on the winning driver so the flags we get are
  the ones we intended.
* Use the bus accessor macros instead of defining our own.
* Remove duplicate assigns of fd->type.
2004-07-12 20:49:26 +00:00
Warner Losh
fa5afa1df0 Until I'm ready to commit the better pccard probe/attach routines, effectively
comment them out.
2004-07-11 16:01:25 +00:00
Warner Losh
6d6fa4fdc9 Break out the isa and pccard front ends from fdc. This is the first
step in making this driver more attachment neutral.  Others plan on
adding acpi front ends.

Still need to cleanup the MI part of the driver because it isn't as
bus independent as it could be.
2004-07-07 22:35:27 +00:00