Commit Graph

22 Commits

Author SHA1 Message Date
Ian Dowse
368030a87a Use the limited scatter-gather capabilities of ehci, ohci and uhci
host controllers to avoid the need to allocate any multi-page
physically contiguous memory blocks. This makes it possible to use
USB devices reliably on low-memory systems or when memory is too
fragmented for contiguous allocations to succeed.

The USB subsystem now uses bus_dmamap_load() directly on the buffers
supplied by USB peripheral drivers, so this also avoids having to
copy data back and forth before and after transfers. The ehci and
ohci controllers support scatter/gather as long as the buffer is
contiguous in the virtual address space. For uhci the hardware
cannot handle a physical address discontinuity within a USB packet,
so it is necessary to copy small memory fragments at times.
2006-05-28 05:27:09 +00:00
Warner Losh
098ca2bda9 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
Mike Silbersack
f71ae83f34 Remove "Scheduling overrun" interrupts from the set of normal interrupts
that the OHCI driver uses.  Broken OHCI devices (like the controller
in my laptop, apparently) like to set this bit at times.  Research
through google shows that this problem has shown up on other systems
as well.

As the scheduling overrun handler doesn't actually do anything, and
the only effect is console spamming, disabling the interrupt seems
to be the right thing to do.  (And it is also what linux 2.6 does.)
2004-05-06 09:21:05 +00:00
John-Mark Gurney
86231a1846 fix support for umass and related devices on ohci. This is a partial
sync of the NetBSD code.

fix isochornous support for ohci.  This gets webcams like my OV511
working on sparc64.

PR:		kern/52589
Submitted by:	Bruce R. Montague (isochonous support)
Reviewed by:	joe among others
2003-07-15 23:12:54 +00:00
John-Mark Gurney
c97325b0c8 WARNING: white space diff
This code reduces the number of trailing white space to be more in line
w/ NetBSD.  I don't regenerate usbdevs, saving that for when it really
changes.
2003-07-04 01:50:39 +00:00
Josef Karthauser
a5450efd66 Merge from NetBSD:
ohci.c (1.85), ohcireg.h (1.17):

	----------------------------
	date: 2000/04/01 09:27:35;  author: augustss;
	Add a delay before reading the number of ports from the controller to
	avoid getting 0 from it.
	----------------------------
2002-04-01 13:21:43 +00:00
Josef Karthauser
6688a3fdbe Merge from NetBSD:
ohci.c (1.83), ohcireg.h (1.16), ohcivar.h (1.21)

	===================================================================
	date: 2000/03/29 01:46:26;  author: augustss;
	A first stab at support for isochronous transfers.
	===================================================================
2002-04-01 13:18:11 +00:00
Josef Karthauser
c3da78970e Merge from NetBSD:
ohci.c:	-r1.69 to 1.71
    ohcireg.h:	-r1.14

Some of these deltas are based upon patches that we submitted back to
NetBSD.  They got manifested slightly differently though, so I've brought
back those differences to bring our code bases closer together.

The logs from the NetBSD version of ohci.c:

	revision 1.71
	date: 2000/02/01 05:42:52;  author: augustss;  state: Exp;  lines: +13 -2
	Put some #ifdefs around power and shutdown hooks.
	----------------------------
	revision 1.70
	date: 2000/01/31 22:35:13;  author: augustss;  state: Exp;  lines: +7 -7
	Rename TAILMASK to HEADMASK, since it really masks the head pointer.
	From FreeBSD.
	----------------------------
	revision 1.69
	date: 2000/01/31 22:09:13;  author: augustss;  state: Exp;  lines: +18 -14
	Change where the has table for physical-to-virtual address translation
	is handled.  Partly from FreeBSD.
2002-01-21 05:02:21 +00:00
Josef Karthauser
851522be27 Merge from NetBSD:
ohci.c:	-r1.68
    ohcireg.h:	-r1.13

	date: 2000/01/31 20:17:25;  author: augustss;  state: Exp;
	Fiddle with over-current protect when turning on port power to make
	things work for some OHCI controllers.
2002-01-21 04:24:33 +00:00
Nick Hibma
128aa3af3c Change Lennart's e-mail address. 2000-05-14 16:43:10 +00:00
Nick Hibma
8f9683e20c Correctly handle the conversion from virtual to physical addresses. The
problem was basically (for offset > 4096):

	vtophys(addr) + offset != vtophys(addr + offset)

Also, use TD's with a maximum size of 4k instead of 8kb for OHCI
controllers.

This problem occurs in drivers that use large transfer sizes:
umass, host2host and ethernet with jumbo frames.
2000-02-10 18:50:19 +00:00
Nick Hibma
e0d607e198 Mask off the last two bits before comparing. It might just be that some
hardware might leave those bits in the wrong state.
2000-01-29 11:59:31 +00:00
Nick Hibma
fd43044e52 The values for OHCI_HALTED and OHCI_TOGGLECARRY were reversed. 2000-01-28 00:03:45 +00:00
Nick Hibma
8648a2cdb9 Move the defines to the right location.
Add a DIAGNOSTIC when closing interrupt pipes.

Insert splx(s) which were left out with iso pipes (non-functional yet) and
in a DIAGNOSTIC.
2000-01-27 23:25:58 +00:00
Bill Paul
a6d9a40e81 More USB ethernet tweaks:
- Sync ohci, uhci and usbdi modules with NetBSD in order to obtain the
  following improvements:
        o New USBD_NO_TSLEEP flag can be used in place of UQ_NO_TSLEEP
          quirk. This allows drivers to specify busy waiting only for
          certain transfers (namely control transfers for reading/writing
          registers and stuff).
        o New USBD_FORCE_SHORT_XFER flag can be used to deal with
          devices like the ADMtek Pegasus that sense the end of bulk OUT
          transfers in a special way (if a transfer is exactly a multiple
          of 64 bytes in size, you need to send an extra empty packet
          to terminate the transfer).
        o usbd_open_pipe_intr() now accepts an interval argument which
          can be used to change the rate at which the interrupt callback
          routine is invoked. Specifying USBD_DEFAULT_INTERVAL uses the
          value specified in the device's config data, but drivers can
          override it if needed.
- Change if_aue to use USBD_FORCE_SHORT_XFER for packet transmissions.
- Change if_aue, if_kue and if_cue to use USBD_NO_TSLEEP for all
  control transfers. We no longer force the non-tsleep hack for
  bulk transfers since these are done asynchronously anyway.
- Removed quirk entry fiddling from if_aue and if_kue since we don't
  need it anymore now that we have the USBD_NO_TSLEEP flag.
- Tweak ulpt, uhid, ums and ukbd drivers to use the new arg to
  usbd_open_pipe_intr().
- Add a flag to the softc struct in the ethernet drivers to indicate
  when a device has been detached, and use this flag to perform
  tests to prevent the drivers from trying to do control transfers
  if this is the case. This is necessary because calling if_detach()
  with INET6 enabled will eventually result in a call to the driver's
  ioctl() routine to delete the multicast groups on the interface,
  which will result in attempts to perform control transfers. (It's
  possible this also happens even without INET6 support enabled.) This
  is pointless since we know that if the detach method has been called,
  the hardware has been unplugged.
- Changed watchdog timeout routines to just call the driver init routines
  to initialize the device states without trying to close and re-open the
  pipes. This is partly because we don't want to frob things at interrupt
  context, but also because this doesn't seem to work right and I don't
  want to panic the system just because a USB device may have stopped
  responding.
- Fix aue_rxeof() to be a little smarter about detecting when a double
  transfer is needed. Unfortunately, the design of the chip makes it hard
  to get this exactly right. Hopefully, this will go away once either
  Nick or Lennart finds the bug in the uhci driver that makes this ugly
  hack necessary.
- Also sync usbdevs with NetBSD.
2000-01-20 07:38:33 +00:00
Nick Hibma
3241be7550 Synchronisation with NetBSD as of 1999/11/16:
Cleaning up the code:
- Declare many functions static
- Change variable names to make them more self explanatory
- Change usbd_request_handle -> usbd_xfer_handle
- Syntactical changes
- Remove some unused code
- Other KNF changes

Interrupt context handling
- Change delay to usbd_delay_ms were possible (takes polling mode into
  account)
- Change detection mechanism for interrupt context

Add support for pre-allocation DMA-able memory by device driver

Add preliminary support for isochronous to the UHCI driver (not for OHCI
yet).

usb.c, uhci.c, ohci.c
- Initial attempt at detachable USB host controllers
- Handle the use_polling flag with a lttle more care and only set it if
we are cold booting.

usb.c, uhci.c ohci.c, usbdi.c usbdi_util.c usb_subr.c
- Make sure an aborted pipe is marked as not running.
- Start queued request in the right order.
- Insert some more DIAGNOSTIC sanity checks.
- Remove (almost) unused definitions USBD_XFER_OUT and USBD_XFER_IN.

usb.c, usb_subr.c
- Add an event mechanism so that a userland process can watch devices
  come and go.

ohci.c
- Handle the case when a USB transfer is so long that it crosses two
  page (4K) boundaries.  OHCI cannot do that with a single TD so we make
  a chain.

ulpt.c
- Use a bigger buffer when transferring data.
- Pre-allocate the DMA buffer.  This makes the driver slightly more
  efficient.
- Comment out the GET_DEVICE_ID code, because for some unknown reason it
  causes printing to fail sometimes.

usb.h
- Add a macro to extract the isoc type.
- Add a macro to check whether the routine has been entered after splusb
  and if not, complain.

usbdi.c
- Fix a glitch in dequeueing and aborting requests on interrupt pipes.
- Add a flag in the request to determine if the data copying is done by
  the driver or the usbdi layer.
1999-11-17 22:33:51 +00:00
Nick Hibma
8c895d718b Major synchronisation with the NetBSD USB stack:
- Some cleanup and improvements in the uhci and ohci drivers
- Support for plugging and unplugging devices improved
- Now available is bulk transport over OHCI controllers
- Resume and suspend have been temporarily been disabled again.  Proper
  support for it is available in the uhci.c and ohci.c files but I have
  not yet spent the brain cycles to use it.
- OpenBSD now uses the USB stack as well
- Add FreeBSD tags
1999-10-07 19:26:38 +00:00
Nick Hibma
235dddd4ea Textual changes 1999-01-22 00:51:12 +00:00
Nick Hibma
a73f7cf01f Major synchronisation with NetBSD USB code 1999-01-07 23:07:57 +00:00
Nick Hibma
6fef2c2c27 Added Id to all files 1998-12-14 09:32:25 +00:00
Nick Hibma
97797dc959 Various bug fixes:
1) Removed 'emulation' of bitmaps in printfs, FreeBSD seems to have caught
  up on that one
2) Fixed a few bugs in the timeout/timo timeout variables
3) First attempt at fixing a bug mentioned by Kazu: uhci_run is not able
  start/stop his USB host on his motherboard.
1998-12-09 23:36:15 +00:00
Nick Hibma
0cec007c5f Initial commit of ported NetBSD USB stack 1998-11-26 23:13:13 +00:00