very slightly modified form for wscons support on the TC alpha.
XXX This could use some more work, but this code should be sharable
among the alpha and pmax systems as-is.
we can't use up all of the remaining sc->txslot[chan].bfree free
bytes) because that would cause the circular buffer read pointer
to become equal to the write pointer, thus signaling 'empty buffer'
to the hardware and stopping the transmitter. spotted and fixed
by Kenjiro Cho <kjc@csl.sony.co.jp>
Don't claim DMA support if we don't have explicit support for this chip.
They're to may way to loose when trying to use DMA without configuring the
controller and disks.
in the printing of DMA mode (piix3/4 only)
others: set the debug_mask to 0, so that debug messages are turned off by
default but can be easily turned on.
Reset drive_flags to 0 for unconfigured devices, so that they are ignored
later. For configured devices, reset state to 0 after probe/attach.
Our other constants also use "ATALK".
Added many new ETHERTYPE constants to sys/net/ethertypes.h, including the
ones from libpcap and tcpdump "ethertype.h" files.
Implement ioctl pass-through to the host bus adapter, allowing both
SCBUS* ioctls handled at that level and host adapter-specific ioctls
to be implemented. Implement SCBUSIORESET as a pass-through.
Inspired by PR #6090, from Matt Jacob.
struct scsipi_adapter; they were not used.
Add a scsipi_ioctl entry point to struct scsipi_adapter. This will be
used to issue ioctl commands to the host adapters.
Inspired by PR #6090, from Matt Jacob.
* commit isapnpvar.h changes required for ARC to support plain isa.
* fixup mistake over mips/include/cpuregs.h.
* mips/mips_machdep.c:
set L2 cache-size for arc, cleanup use of L2cache present
vs L2 cache-size variables. check for no L2 cache on kernels
configured to require one. misc cleanups.
* mips/mpis/trap.c: more locore stack-traceback label cleanup.
XXX Locore callbacks for mips3, mips4, r4600 cacheflush need more work.
This bus space tag and handle is used for 32 bit data transfers i.e.
when WDC_CAPABILITY_DATA32 is enabled as the 32 bit data register may
not be part of the standard drive registers.
"keypad-delete". (This is not completely clean; for me these keys make
up perhaps a "function field", but no "keypad".)
This is the mapping expected by applications.
Proposed by Chris Jones via PR kern/6089 and Dave Sainty.
in scsipi_done() if the transfer is asynchronous. This reduces the size
of the critical section in scsipi_execute_xs() somewhat (in fact,
back to its original size).
Add vendor ID for ESS Technology Inc.
Add product ID for ESS Technology ES1938 SOLO-1 AudioDrive
Add product ID for Fujitsu K56flex LTMODEM
Add product ID for TI PCI1250 PC Card bridge
Add product ID for Trident Cyber 9397 Video controller.
a slightly different fibre startup (print ALPA now too). Change
the way that return values from dma setup is done. Make debug messages
out of some queue overflow situations. Turn PORT LOGGED OUT into
Selection Timeout equivlaent. On isp_restart actions don't blow off
the commands with HBA_BOTCH (XS_DRIVER_STUFFUP) - set them with HBA_BUSRESET
(which is defined as XS_DRIVER_STUFFUP until someone decides whether
the suggested change to the midlayer NetBSD is worthy of inclusion).
the amount of statekeeping in drivers for LK201-like keyboards, and it
might be useful to resync after resets or overflows.
(reused the unused WSCONS_EVENT_KEY_OTHER event ID)
Implement the necessary decoding bits.
(probably due to an interrupt) between the time it is scheduled and the
time we get around to setting the SCSI_ASYNCREQ flag, we can lose the xs.
Fix this by checking to see if the transfer has already completed after
the scsi_cmd function returns SUCCESSFULLY_QUEUED, and just return to the
caller if so.
descriptor count gets miscounted on txprobes. The second (and more
important) is that transmit stalls should now be fixed. The problem
was not due to lack of ring resources but dmamaps. When Jason changed
the driver to use pre-allocated maps (instead of the dynamic ones I
used), and when there were no more maps, the driver just gave up instead
of calling tx_intr to free any transmitted but unreclaimed dma maps.
Since there was nothing being transmitted, no transmit interrupts
would fire to restore things (and OACTIVE prevented other transmits
from happenning). So it stayed starved until another interrupt cause
(like a received packet) "woke" it up.
use PIO (or equivalent) code to do asynchronous transfers: In
ncr5380_scsi_cmd(), test to see if the request has been completed after
the call to ncr5380_sched(), and return COMPLETE if so. This avoids
going into an infinite loop in scsipi_execute_xs() while waiting for an
interrupt to trigger completion of the transfer... which, of course,
never happens, since it's already done.
scsipi_xfer structures.
When scsipi_execute_xs() calls the driver's scsi_cmd function, it assumes
that it can still dereference a pointer to the scsipi_xfer struct. Since
scsipi_done() has already been called, which in turn has called
scsipi_free_xs(), the struct has already been returned the structure to
the pool! In other words, xs->flags has been compromised, but we are still
testing it.
These changes resolve the problem by doing the following:
- In scsipi_execute_xs(), if the hardware driver's scsi_cmd function
returns SUCCESSFULLY_QUEUED, set a new flag (SCSI_ASYNCREQ) in xs->flags.
Since the request will be handled asynchronously, we will need the
scsipi_xfer struct to be freed in scsipi_done().
If the hardware driver's scsi_cmd function returns COMPLETE, we now
simply return any actual errors, or 0 if none occurred. (Previously,
we may have returned EJUSTRETURN, of which the sole effect was to
avoid freeing the scsipi_xfer struct in our caller.)
- In scsipi_done(), only free the scsipi_xfer struct for async requests.
The contents of the struct will otherwise remain valid until the
function that initiated the transfer frees it.
With this change, responsibility for freeing the struct now lies in two
places, depending on the type of the request:
- For synchronous requests, the routine calling scsipi_execute_xs()
must clean up.
- For asynchronous requests, scsipi_done() cleans up (as it always has).
[Note: this change also corrects a problem with sddump(): scsipi_done()
was attempting to return a static scsipi_xfer struct to the pool! Since
dumps are performed synchronously, we now handle this correctly.]
This solution was provided by Jason Thorpe, after I got him to look at
some related (but insufficient) attempts of my own.
scsipi_xfer structures.
When scsipi_execute_xs() calls the driver's scsi_cmd function, it assumes
that it can still dereference a pointer to the scsipi_xfer struct. Since
scsipi_done() has already been called, which in turn has called
scsipi_free_xs(), the struct has already been returned to the pool! In
other words, xs->flags has been compromised, but we are still testing it.
These changes resolve the problem by doing the following:
- In scsipi_execute_xs(), if the lower-level driver's scsi_cmd function
returns SUCCESSFULLY_QUEUED and SCSI_NOSLEEP is set in xs->flags, set a
new flag (SCSI_ASYNCREQ). This indicates that scsipi_done() should free
the scsipi_xfer struct.
If the lower-level driver's scsi_cmd function returns SUCCESSFULLY_QUEUED
but SCSI_NOSLEEP is not set, we wait (via tsleep()) for the request to
complete, then fall through to the COMPLETE case.
If the lower-level driver's scsi_cmd function returns COMPLETE, we now
simply return any actual errors, or 0 if none occurred. (Previously,
we may have returned EJUSTRETURN, of which the sole effect was to
avoid freeing the scsipi_xfer struct in our caller. No code seems
to depend on this behavior, however.)
- In scsipi_done(), only free the scsipi_xfer struct for async requests.
The contents of the struct will otherwise remain valid until the
function that initiated the transfer frees it.
With this change, responsibility for freeing the struct now lies in two
places, depending on the type of the request:
- For synchronous requests, the routine calling scsipi_execute_xs()
must clean up.
- For asynchronous requests, scsipi_done() cleans up (as it always has).
[Note: this change also corrects a problem with sddump(): scsipi_done()
was attempting to return a static scsipi_xfer struct to the pool! Since
dumps are performed synchronously, we now handle this correctly.]
This solution was provided by Jason Thorpe, after I got him to look at
some related (but insufficient) attempts of my own.
that sc_ad.ioh is the 8-byte region as opposed to blindly passing it
the first region.
With this change, and a device def which will follow, the IDE controller
on my OPTi Audio 16 card works!
thorpej