Commit Graph

343 Commits

Author SHA1 Message Date
Jung-uk Kim
b31da03fd8 Assume floppy disk is not inserted when we have exhausted retries. This
significantly reduces booting time when there is broken floppy disk drive,
controller, cable, BIOS, etc.
When the floppy controller interface is correctly implemented, disk change
signal (DSKCHG) is reflected in the Digital Input Register (DIR) at 0x3f7.
However, there are many cases that the signal is unusable.  Moreover, some
BIOS does not reserve the port at all.  In those cases, the register may not
function.
2006-07-12 00:49:46 +00:00
Jung-uk Kim
50d99d1a52 Enhanced floppy controllers have Data Rate Select Register (DSR) at 0x3f4.
Use it to reset controller and to select data rate.  According to Intel
80277AA datasheet, software reset behaves the same as DOR reset except
that it is self clearing.  National Semiconductor PC8477B datasheet says
the same.  As a side effect, we no longer use Configuration Control
Register (CCR) at 0x3f7 for these controllers, which is often missing
in modern hardware.
2006-07-06 21:12:18 +00:00
John Baldwin
9fc9d84b9b - Use callout_init_mtx() to initialize toffhandle callout using the fdc's
mutex.
- Don't use callout_drain() to stop the toffhandle callout while holding the
  fdc mutex (this could deadlock) in functions called from softclock
  (callouts aren't allowed to do voluntary sleeps).  Instead, use
  callout_stop().  Note that since we hold the associated mutex and are now
  using callout_init_mtx(), callout_stop() is just as effective as
  callout_drain().  (Though callout_drain() is still needed in detach to
  make sure softclock isn't contesting on our mutex before we destroy the
  mutex.)
- Remove unused callout 'tohandle' from softc.

MFC after:	1 week
2006-02-23 19:11:16 +00:00
Nate Lawson
ce1a23d397 Remove unused variable.
Coverity ID:	558
Found by:	Coverity Prevent
2006-02-21 03:19:24 +00:00
David E. O'Brien
2a191126de Canonize the include of acpi.h. 2005-09-11 18:39:03 +00:00
Craig Rodrigues
1217bf6a9b FDOPT_NORETRY is an option, and must be compared with fd->options,
not fd->flags.

PR:		kern/85481
Submitted by:	Lev Levinson <llevinson at inbox dot ru>
MFC after:	1 day
2005-08-30 23:12:18 +00:00
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
356eadcdd6 If we fail a sanity check for the resources just allocated, make sure
that we free that resource.  All the other resources are freed in
their own routine, but since we haven't saved a pointer to this one,
it is leaked.  This is the failure case that lead to the sio ports
that weren't working, I think.
2005-03-15 08:02:47 +00:00
Warner Losh
d90aafb50d Only allocate 1 port for non-zero rids. Either we'll get the proper
length form the enumeration mechanism, or we're dealing with the FDCTL
register, which is only 1 port long.
2005-03-14 19:09:29 +00:00
Warner Losh
530a692468 Fix a couple of problems with the probe code when used with pnpbios
resources.  When allocating 6 ports for a 4 port range isa code
returns an error.  I'm not sure yet why this is the case, but suspect
it is just a non-regularity in how the resource allocation code works
which should be corrected.  Use 1 as the ports size in this case.
However, in the hints case, we have to specify the length, so use 6 in
that case.  I believe that this is also acpi friendly.

Also, complain when we can't allocate FDOUT register space.  Right now we
silently fail when we can't.  This failure is referred to above.

When there's no resource for FDCTL, go ahead and allocate one by hand.
Many PNPBIOS tables don't list this resource, and our hints mechanism also
doesn't cover that range.  If we can't allocate it, whine, but fake up
something.  Before, we were always bogusly faking it and no one noticed
the sham (save the original author who has now fixed his private shame).
2005-03-10 18:09:25 +00:00
Poul-Henning Kamp
62da7a2d68 Add missing () 2005-02-28 13:49:06 +00:00
Pyun YongHyeon
a7e943a456 Add missing va_end() in fdc_cmd.
0 -> NULL in arguments of fdc_sense_int().

Reminded by:	joerg
2005-02-28 05:14:45 +00:00
Warner Losh
787a196bb7 Mask off the upper bits of the resource before using it as an index
into a small array.  Also, re-save the dev in attach to avoid
depending on side effects of the probe.

Weird stuff Reported by: jeffr
2005-01-20 17:27:37 +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
Poul-Henning Kamp
2221dbebce Pass the file->flags down to geom ioctl handlers.
Reject certain ioctls if write permission is not indicated.

Bump geom API version.

Reported by:	Ruben de Groot <mail25@bzerk.org>
2004-12-12 10:09:05 +00:00
Warner Losh
4b87c653f9 Properly wither the geom container on detach. This will allow one to
then later reload fdc and not have duplicate fd devices in dev.

# Maybe this should be moved to a convenience function.

Reviewed by: phk
2004-11-21 16:25:21 +00:00
Poul-Henning Kamp
f8353ede58 Add the last missing bits to make this unloadable: Two wakeups and
calling of the GEOM modevent from the drivers modevent so we know the
order things happen.
2004-11-08 18:53:52 +00:00
Yoshihiro Takahashi
56f0c46a3b Remove a duplicate code. 2004-10-30 12:34:25 +00:00
Poul-Henning Kamp
268315b628 Now that filesystems respect and understand GEOM access counts, refuse
a write open of a read-only floppydisk.
2004-10-29 11:05:45 +00:00
Poul-Henning Kamp
1ef0fd8224 Properly handle failure to allocate isadma bounce buffer 2004-10-22 19:01:10 +00:00
Nate Lawson
926660271c Remove unused variable. Pointy hat candidate. 2004-10-15 04:54:16 +00:00
Nate Lawson
e5979322ba Remove local hacks to set flags now that the device probe does this for us.
Tested on every device except sio_pci and the pc98 fd.c.  Perhaps something
similar should be done for the "disabled" hints also.

MFC after:	2 weeks
2004-10-14 22:21:59 +00:00
Peter Edwards
8fe457d687 Fix off-by-one error in fd_native_types that results in a panic on boot
for machines with 2.88M floppies.

Reviewed By: phk
2004-10-10 23:39:59 +00:00
Warner Losh
534e7194f8 Yet another case of resources:
+        * 9:   0x3f0-0x3f3,0x3f4-0x3f5,0x3f7

This requires only one change to support.  Rather than keying on the
size of the resource being 2, instead key off the end & 7 being 3.
This covers the same cases that the size of 2 would catch, but also
covers the new above case.

In addition, I think it is clearer to use the end in preference to the
size and start for case #8 as well.  Turns two tests into one, and
catches no other cases.

Make minor commentary changes to deal with new case #9.

# This change is specifically minimal to allow easy MFC.  A more
# extensive change will go into current once I've had a chance to test
# it on a lot of hardware...
2004-10-05 07:18:11 +00:00
John Baldwin
30b490009b Only fall back to probing the floppy drives via hints if there is a failure
in the actual _FDE parsing.  If the failure occurs earlier such as in
fdc_attach() then don't try to probe any drives.

MFC after:	3 days
Reviewed by:	njl
Tested by:	Christian Laursen xi at borderworlds dot dk
2004-09-29 19:08:34 +00:00
Poul-Henning Kamp
3ba0c6b127 Use the floppy drive unit number to name the /dev entry, not the
controller unit number.

Submitted by:	Rostislav Krasny <rosti_bsd@yahoo.com>
2004-09-25 08:56:57 +00:00
Joerg Wunsch
360048a7ef Few (trailing) whitespace and spelling fixes. 2004-09-24 20:33:52 +00:00
Joerg Wunsch
3fc95726c4 Protect fdc->flags within the worker thread, too.
Use kthread_exit() instead of falling through the end of the worker
thread's main function.  Since kthread_exit() wakeup(9)s everyone
sleeping on the thread handle, drop the superfluous wakeup() call.
2004-09-24 20:28:00 +00:00
Poul-Henning Kamp
61909e4c4f Lock the flags field with the mutex.
Improve a number of comments.
2004-09-24 13:04:49 +00:00
Joerg Wunsch
02910eee10 Implement terminating the worker thread when the driver is about to
be deregistered.

Not yet tested, since by now, GEOM doesn't want us to deregister.  PHK
wants to fix that RSN.
2004-09-23 21:12:21 +00:00
Warner Losh
083ba097fd das@ has a ACPI bios that lists 0x3f0-0x3f1, 0x3f2-0x3f3, 0x3f4-0x3f5
and 0x3f7.  fdc_isa_alloc_resource() didn't work right in this case
(it accessed FDOUT correctly due to an overflow of the first resource.
It accesed FDSTS and FDDATA incorrectly via the second resource (which
wound up accessing FDOUT and the tape register at 0x3f3) and badly for
the CTL register (at location 0x3f4).  This is a minimal fix that just
'eats' the first one if it covers two locations and has an offset of
0.  This confusion lead the floppy driver to think there'd been a disk
change, which uncovered a deadlock in the floppy/geom code which lead
to a panic.  These changes fix that by fixing the underlying resource
problem, but doesn't address the potential deadlock issue that might
still be there.

This is a minimal fix so it can more safely be merged into 5 w/o risk
for known working configurations (hence the use of the ugly goto,
which reduces case 8 to case 6 w/o affecting cases 1-7).  A more
invasive fix that will handle more ACPI resource list diversity is in
the pipeline that should kill these issues once and for all, while
staying within the resources that we allocate.

Tested/Reported by: das
Reviewed by: njl
MFC before: re->next_release_name(5.3-BETA5);
2004-09-20 06:12:19 +00:00
Warner Losh
27df52f999 The long dead hand of the past has pushed forward useless bits in this
driver.  Trim its fingernails by removing some useless bits before
fixing the 'thread not terminated on detach' problem.

o dmacnt is no longer used now that we allocate at attach time.  Remove
  it from struct fdc_data.
o ISPNP was only ever set, but never tested.  It used to be used for the
  allocation routines to change how it allocated resources.  Since that's
  no longer necessary, retire the flag.
o ISPCMICA was only ever tested, but never set.  GC it.  This removes
  a special case in determining the drive type.  The drive type is
  now set in fdc_pcmcia.c, so the hack isn't needed anymore.  Sadly,
  this isn't tested with a Y-E Data pcmcia floppy drive because there
  are a number of other issues that preclude it from working.
o Fix ifdef for reading from the rtc.  I'm of the opinion that this ifdef
  should be moved into fdc_isa.c, but not today as ideally there'd be
  other fixes to the probing of children.  So now we just read it on
  i386 ! pc98 (there's no #define for MACHINE_ARCH, just MACHINE, hence
  this slightly inelegant kludge) and amd64.  The PC98 exclusion likely
  isn't meaningful since pc98 uses a different driver, but will be when
  merging of the pc98 floppy code into this driver is complete (this is the
  other reason I think this block of code belongs outside fdc.c).

All of these changes are safe to MT5.
2004-09-17 18:50:38 +00:00
Nate Lawson
a3f51d1971 Handle _FDE results of 5 bytes (vs. 5 uint32_t's). BIOS vendors find yet
another way to misinterpret the spec.  Also, always fall back to the hints
probe on any attach failure, not just when _FDE fails.

Thanks to imp and scottl for finding this.

Tested by:	rwatson (minimally)
MFC after:	5 days
2004-09-17 04:14:38 +00:00
Warner Losh
f6ddde7cfa default: case shouldn't set an error yet either. 2004-09-16 06:37:05 +00:00
Warner Losh
7964bd0c70 Reserve the DMA memory at attach time, rather than at use. While
reserving it at use time is more miserly, low memory (< 16MB)
evaporates quickly on many systems, so there may not be any suitable
buffers available.  This specifically doesn't use the newer, fancier
isa_dma_init to ease merging to 5.

Reviewed by: tegge, phk
2004-09-16 06:34:00 +00:00
Warner Losh
ee9e2737a1 For the moment, treat failures to attach floppy drives as non-fatal
errors for the attachment process for the floppy controller.  This is
a band-aide because it doesn't try any of the fallback methods when
_FDE isn't long enough, but should be sufficient for people
experiencing the dreaded mutex not initialized panic.
2004-09-16 01:51:21 +00:00
Warner Losh
b593dd82f7 Use bus_setup_intr in preference to BUS_SETUP_INTR. 2004-09-14 17:28:51 +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
Warner Losh
389bdd096c When ISA_PNP_PROBE is called, it will return 0 when it finds a device,
ENOENT when there's no PNP ID for this device node, or ENXIO when there
is one, but it doesn't match.

In the nonPNP case (as most Alpha systems appear to be), we were
treating the error return as an error, when it should be have ignored
it.  Version 1.9 properly ignored it, but the attach re-write of 1.10
introduced this logic error.

Pointy Hat to: phk (for breaking it then asking me to fix it :-)
Sponsored by: The Voices in Bill Paul's Head, LLC
2004-08-31 20:37:10 +00:00
Nate Lawson
885128efdc Fix _FDI drive type probing. The new fd child is not an ACPI device while
the old one is.  Hence we need to evaluate the old one for _FDI since it
has a valid ACPI_HANDLE ivar.  This is a minimal fix.  Make a note that a
more complete one is to make fdc support the ACPI_HANDLE ivar for its
children.

This and the previous change are MT5 candidates.
2004-08-30 21:35:34 +00:00
Nate Lawson
f40c77a223 Fix _FDE probing by using the buffer contents instead of the buffer
object itself.  ACPI-CA returns an ACPI_OBJECT of type Buffer rather than
the buffer contents itself.
2004-08-30 21:13:03 +00:00
Poul-Henning Kamp
1d4b1bb78d Hide a printf under bootverbose. 2004-08-27 17:08:24 +00:00
Poul-Henning Kamp
ec200f23d2 Attempt to make the probe for hardware more specific. 2004-08-21 08:40:00 +00:00
Nate Lawson
7500723246 Remove a check that is too strict. With BIOSen that specify an IO/ctl port
of 0x3f2-0x3f5,0x3f7 the ports are not 7 bytes apart.  This should fix
floppy probing on such systems.  (We handle the case of adjusting for
a start of 0x3f2 -> 0x3f0 separately, although that code should still be
checked if there are still floppy problems for others.)

Tested by:	Sarunas Vancevicius <vsarunas_at_eircom.net>
MFC after:	3 days
2004-08-20 16:34:30 +00:00
Poul-Henning Kamp
03c8015457 Remove unused file. 2004-08-20 15:15:48 +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
Poul-Henning Kamp
3abefc9e56 Remove confused comment. 2004-08-14 21:40:28 +00:00
Nate Lawson
20819082dc Fix ACPI floppy enumeration for three types of divergent behavior.
* Some systems have _FDE and child floppy devices, but no _FDI.  This seems
  to be compatible with the standard.  Don't error out if there is no _FDI.
  Instead, continue on to the next device.  The normal fd probe will take
  care of this device.
* Some systems have _FDE but no child devices in AML.  For these, add a
  second pass that compares the results of _FDE to the presence of devices.
  If not present, add the missing device.
* Some BIOS authors didn't read the spec.  They use tape drive values for
  all fdc(4) devices.  Since this isn't grossly incompatible with the
  required boolean value, use them.  They also define the _FDE items as a
  package instead of buffer.  Regenerate the buffer from the package if it
  is present.

Tested by:	tjr, marcel
2004-07-28 22:35:41 +00:00
Yoshihiro Takahashi
5ceae6b826 Correct typo. 2004-07-17 10:05:56 +00:00