Commit Graph

326 Commits

Author SHA1 Message Date
Justin T. Gibbs
a02f9953f0 Revert AHD_TIMER_MAX_US to its original definition now that the
ahc and ahd modules have correct dependencies on the assembler.
2003-01-22 22:00:07 +00:00
Poul-Henning Kamp
c6eeff600d Bandaid to make the kernel compile until the scsi-crew can find out what
is happening.
2003-01-21 10:31:43 +00:00
Justin T. Gibbs
256081f980 Fix a missed goal.period -> goal.offset change. In
this case, the bug resulted in comparing a period
against an offset.
2003-01-20 23:51:18 +00:00
Justin T. Gibbs
70b41139c3 aic7xxx.reg:
Add a constant for the controller's stack size and the
	maximum scsi offset.

aic7xxx.seq:
	Style nit.  The source is implied to be the destination
	unless overridden in an "and" instruction.

	Update target mode code for changes in identify seen
	sequencer flags.

aic7xxx_pci.c:
	Ensure that the PCIERRGENDIS bit is set in the
	PCIERRGEN config space register.  Perhaps this
	is a reason for the spurios parity errors reported
	on U160 controllers.

	Honor the AHC_NO_BIOS_INIT flag.

	Allow PCI interrupt reporting to be disabled,
	by clearing the PERRRESEN bit in the command
	register.  This option is now enabled via a new
	softc flag: AHC_DISABLE_PCI_PERR.

	Disable SERR and pause the controller prior to performing
	our mmapped I/O test.  This should handle the case of
	controllers that do not "auto-access pause".  For legacy
	controllers, use SCB ram instead of scratch ram since
	the latter may contain settings left over from the BIOS
	that we will use if an seeprom is not found.

	Make use of new ahc_inl/outl() inlines.

aic7xxx.h:
	Reformat a few comments to follow driver style.

	Add a controller flags that indicate that a controller
	has not been initialized by the BIOS and whether to
	disable PCI parity errors..

	Remove stack probing softc members.

	Add a few more syncrate constants that are useful in speed
	fallback calculations.

	Add the SHOW_MASKED_ERRORS debug flag.

aic7xxx.h:
aic7xxx.c:
	Implement the SCB_SILENT flag.  This is useful for
	hushing up the driver during DV or other operations
	that we expect to cause transmission errors.  The
	messages will still print if the SHOW_MASKED_ERRORS
	debug option is enabled.

aic7xxx_inline.h:
	Implement ahc_[in|out][w|l|q].  This removes the need
	for manual 'or and shift" type operations throughout
	the driver.

aic7xxx.c:
	Move SELTO dignostic so that the SCB is still valid
	when we use it for printing path information.

	If we are narrow, limit syncrate to Ultra2.

	Don't clobber ppr_options when forcing a renegotiation.
	The current ppr_options may be referenced while queuing
	new commands.  Don't set our width to unknown when forcing
	negotiation on narrow controllers.  This will confuse the
	negotiation code into negotiating with a wide message on
	narrow controllers.

	Add an "asserting atn" diagnostic with controller/target
	information.

	Remove the probe_stack code.  The stack is always
	4 deep on legacy controllers, so probing is pointless.
	This also avoids an issue where probing the stack would
	upset the aic7770.

	In ahc_reset(), record whether or not we found the
	controller in a reset state.  If the controller was
	already reset, assume that no BIOS has initialized
	the controller and ignore left over scratch ram
	settings.

	Fix an ifdef bug that caused sequencer debugging to
	be enabled always.

	Clear the ultraenb flag in our tstate during startup.
	The ultraenbled'ness of a device is recorded in the user
	transfer settings.  tstate->ultraenb bitmask indicates
	which devices we have negotiated an ultra speed with.
	Just after initialization, we are async.  Setting the
	ultraenb flag while async seems to be harmless, but it
	was confusing to see the ULTRAENB flag set in the SCB.

	Enhance residual diagnostic to indicate if the residual
	if for sense information or normal data transfers.

	Indicate the features, bugs, and flags set in the softc
	that are used to control firmware patch download when
	booting verbose.

	In ahc_dump_card_state() fix a logic reversal.  The
	SCSIPHASE register only exists on U160 controllers.
	The SCSISIGI register exists on all controllers.  Not
	the other way around.  Also print out the ERROR register.

	Allow ahc_dump_card_state() to be called when the sequencer
	is not paused.  Add dump card state markers as in the U320
	driver.
2003-01-20 20:44:55 +00:00
Justin T. Gibbs
0794987d01 aic79xx.c:
Implement the SCB_SILENT flag.  This is useful for
	hushing up the driver during DV or other operations
	that we expect to cause transmission errors.  The
	messages will still print if the SHOW_MASKED_ERRORS
	debug option is enabled.

	Save and restore the NEGOADDR address when setting
	new transfer settings.  The sequencer performs lookups
	in the negotiation table too and it expects NEGOADDR
	to remain consistent across pause/unpause sessions.

	Consistently use "offset" instead of "period" to determine
	if we are running sync or not.

	Add a SHOW_MESSAGES diagnostic for when we assert ATN
	during message processing.

	Print out IU, QAS, and RTI features when showing transfer options.

	Limit the syncrate after all option conformance
	changes have taken place in ahd_devlimited_syncrate.
	Changes in options may change the final syncrate we
	accept.

	Keep a copy of the hs_mailbox in our softc so that
	we can perform read/modify/write operations on the
	hs_mailbox without having to pause the sequencer to
	read the last written value.  Use the ENINT_COALESS
	flag in the hs_mailbox to toggle interrupt coalessing.

	Add entrypoints for enabling interrupt coalessing and
	setting both a timeout (how long to wait for commands
	to be coalessed) and a maximum commands to coaless value.
	Add a statistics timer that decides when to enable or
	disable interrupt coalessing based on load.

	Add a routine, ahd_reset_cmds_pending() which is used
	to update the CMDS_PENDING sequencer variable whenever
	error recovery compeltes SCBs without notifying the
	sequencer.  Since ahd_reset_cmds_pending is called
	during ahd_unpause() only if we've aborted SCBs, its
	call to ahd_flush_qoutfifo should not cause recursion
	through ahd_run_qoutfifo().  A panic has been added to
	ensure that this recursion does not occur.

	In ahd_search_qinfifo, update the CMDS_PENDING sequencer
	variable directly.  ahd_search_qinififo can be called
	in situations where using ahd_reset_cmds_pending() might
	cause recursion.  Since we can safely determine the
	exact number to reduce CMDS_PENDING by in this scenario
	without running the qoutfifo, the manual update is sufficient.

	Clean up diagnostics.
	Add ahd_flush_qoutfifo() which will run the qoutfifo
	as well as complete any commands sitting on the
	sequencer's COMPLETE_SCB lists or the good status FIFO.
	Use this routine in several places that did similar
	things in an add-hoc, but incomplete, fashion.  A call
	to this routine was also added to ahd_abort_scbs() to
	close a race.

	In ahd_pause_and_flushwork() only return once selections
	are safely disabled.  Flush all completed commands via
	ahd_flush_qoutfifo().

	Remove "Now packetized" diagnostic now that this
	information is incorperated into the actual negotiation
	messages that are displayed.

	When forcing renegotiation, don't clober the current
	ppr_options.  Much of the driver uses this information
	to determine if we are currently packetized or not.

	Remove some stray spaces at column 1 in ahd_set_tags.

	When complaining about getting a host message loop
	request with no pending messages, print out the
	SCB_CONTROL register down on the card.

	Modify the ahd_sent_msg() routine to handle a search
	for an outgoing identify message.  Use this to detect
	a msg reject on an identify message which typically
	indicates that the target thought we were packetized.
	Force a renegotiation in this case.

	In ahd_search_qinfifo(), wait more effectively for SCB
	DMA activities to cease.  We also disable SCB fetch
	operations since we are about to change the qinfifo
	and any fetch in progress will likely be invalidated.

	In ahd_qinfifo_count(), fix the qinfifo empty case.

	In ahd_dump_card_state(), print out CCSCBCTL in the
	correct mode.

	If we are a narrow controller, don't set the current
	width to unknown when forcing a future negotiation.
	This just confuses the code into attempting a wide
	negotiation on a narrow bus.

	Add support for task management function completions.

	Modify ahd_handle_devreset so that it can handle
	lun resets in addition to target resets.  Use
	ahd_handle_devreset for lun and target reset task
	management functions.

	Handle the abort task TMF race case better.  We now
	wait until any current selections are over and then
	set the TMF back to zero.  This should cause the sequencer
	to ignore the abort TMF completion should it occur.

	Correct a bug in the illegal phase handler that
	caused us to drop down to narrow when handling the
	unexpected command phase case after 3rd party
	reset of a packetized device.

	Indicate the features, bugs, and flags set in the softc
	that are used to control firmware patch download when
        booting verbose.

aic79xx.h:
	Add coalessing and HS_MAILBOX fields.

	Add per-softc variables for the stats "daemon".

	Add a debug option for interrupt coalessing activities.

	Add two new softc flags:
	o AHD_UPDATE_PEND_CMDS
	  Run ahd_reset_cmds_pending() on the next unpause.

	o AHD_RUNNING_QOUTFIFO
	  Used to catch recursion through ahd_run_qoutfifo().

aic79xx.reg:
	Correct register addresses related to the software timer
	and the DFDBCTL register.

	Add constants paramaterizing the software timer.

	Add scratch ram locations for storing interrupt coalessing
	tunables.

	Break INTMASK in SEQITNCTL out into INTMASK1 and INTMASK2.
	In at least the REV A, these are writable bits.  We make
	use of that for a swtimer workaround in the sequencer.

	Since HS_MAILBOX autoclears, provide a sequencer variable
	to store its contents.

	Add SEQINT codes for handling task management completions.

aic79xx.seq:
	Correct ignore wide residue processing check for
	a wide negotiation being in effect.  We must be
	in the SCSI register window in order to access the
	negotiation table.

	Use the software timer and a commands completed count to
	implement interrupt coalessing.  The command complete is
	deferred until either the maximum command threshold or a
	the expiration of a command deferral timer.  If we have
	more SCBs to complete to the host (sitting in COMPLETE_SCB
	lists), always try to coaless them up to our coalessing limit.
	If coalessing is enabled, but we have fewer commands oustanting
	than the host's min coalessing limit, complete the command
	immediately.

	Add code to track the number of commands outstanding.
	Commands are outstanding from the time they are placed
	into the execution queue until the DMA to post completion
	is setup.

	Add a workaround for intvec_2 interrupts on the H2A4.
	In H2A4, the mode pointer is not saved for intvec2, but
	is restored on iret.  This can lead to the restoration
	of a bogus mode ptr.  Manually clear the intmask bits and
	do a normal return to compensate.  We use intvec_2 to
	track interrupt coalessing timeouts.

	Since we cannot disable the swtimer's countdown, simply
	mask its interrupt once we no longer care about it firing.

	In idle_loop_cchan, update LOCAL_HS_MAILBOX everytime
	we are notified of an HS_MAILBOX update via the
	HS_MAILBOX_ACT bit in QOFF_CTLSTA.  We have to use a
	local copy of persistant portions of the HS_MAILBOX as
	the mailbox auto-clears on any read.

	Move the test for the cfg4istat interrupt up an instruction
	to hopefully close a race between the next outgoing selection
	and our disabling of selections.

	Add a missing ret to the last instruction in load_overrun_buf.

	Add notifications to the host of task management
	completions as well as the completions for commands
	that completed successfully before their corresponding
	TMF could be sent.

	Hold a critical section during select-out processing
	until we have a fully identified connection.  This
	removes a race condition with the legacy abort handler.

	Correct a few spelling errors in some comments.

aic79xx_inline.h:
	Call ahd_reset_cmds_pending() in ahd_unpause if required.

	Update cmdcmplt interrupt statistics in our interrupt
	handler.

	Allow callers to ahd_send_scb() to set the task management
	function.

aic79xx_pci.c:
	Disable SERR and pause the controller prior to performing
	our mmapped I/O test.  The U320 controllers do not support
	"auto-access-pause".

aic79xx_osm.c:
	Set the task management function now that
	ahd_send_scb() doesn't do it for us.  We
	also perform a lun reset in response to BDR
	requests to packetized devices.
2003-01-20 20:17:35 +00:00
Justin T. Gibbs
3d46a68893 Allow constants to be complex expressions so long as those
expressions can be fully evaluated during assembly.

Remove the numerical_value portion of the grammer which is
no longer referenced.
2003-01-20 18:02:11 +00:00
Justin T. Gibbs
357c1c6a4c Fix the last reference to the reg_print.c file handle
in symtable_dump.  This allows the assembler to operate
without generating this file.
2003-01-20 18:01:37 +00:00
Scott Long
1c75404899 Convert the use of MAXBSIZE in the dma tag to more appropriate values.
Use BUS_SPACE_MAXSIZE_32BIT for the parent dma tags, and
(NSEGS - 1) * PAGE_SIZE for the data buffer tags.  FreeBSD/sparc64 is
more strict about checking these values that other arches.
2002-12-31 04:22:36 +00:00
Scott Long
8528a71202 The sequencer downloading code assumes that all jump
labels are acurate in relation to a fully compiled
sequencer program (all patches downloaded).  Correct
a few occurances of a relative jump across a macro
that ended up jumping us into the last instruction
of the macro.

Spproved by:	re (bmah)
2002-12-05 00:47:27 +00:00
Scott Long
97cae63d7f Last minute fixes to ahc and ahd:
ahd_pci.c:
	Retrieve the allow_memio hint from the resource manager to
	determine whether or not to try PCI MEMIO.

aic79xx_osm.h:
aic7xxx_osm.h:
	Don't wrongly abuse the callout_reset() interface when trying
	to abuse timeouts generated from the CAM layer.  This fixes the
	console freeze and lost timeout problem that many have reported,
	especially on SMP systems.

aic79xx_pci.c
aic7xxx_pci.c
	Rewrite the MEMIO test routine to prevent certain broken chipsets
	from trying to burst multiple DWORDs to the registers.  Also make
	the routine better detect byte merging by the host bridge and
	deal with it.

aic79xx.reg:
	Correct an incorrect register definition.

Approved by:	re (rwatson, jhb)
2002-12-04 22:51:29 +00:00
Scott Long
0c5aa4c57b Major update to the ahd driver to fix many bugs found in the previous
version, plus add support for the new features found in the Rev B
version of the chip.  The changelog is quite long and can be provided
on request.  Major features include vastly improved protocol violation
handling, full support for the 7902 Rev B, better parity error
handling, and better packetized overrun handling, to name a few.

Approved by:	re (blanket)
2002-12-01 08:13:37 +00:00
Scott Long
454bf1693a Implement workaround for broken busfree-rev in the A4.
HP -> CPQ

Rearrange IDs to better match which chips they use.

Convert to uniform product description strings.

Simplify 7901A setup function.

Add the NONPACKFIFO_BUG and PACED_NEGTABLE_BUG entries
for the A.

Add rev B bugs and features.

The double write workaround for CURRSCB is only required if
abort pending is set.  Remove this work around and set the
abort pending bug bit on the B at least until we have better
confirmation that the double write is always safe.

Add updated H2B identifiers

Move IOCell paramters into softc and add a hook for the
OSM to modify these as well as other settings prior to
committing them to the chip.

SLEW -> SLEWRATE

PREQDIS in DEVCONFIG1 went away after the A2.
Remove all code that references this bit.  This
is especially important since this bit was reused
in the B for a different HW fix workaround.

Properly set the AHD_NEW_IOCELL_OPTS and
AHD_NEW_DFCNTRL_OPTS features for the B.

Remove stray/random extra 7901A generic PCI
table entry.  Also switch the correct 7901A
generic entry to use ID_ALL_MASK since we
can only differentiate the 7901A from the
7902 by checking for a "type field" of 0xE.

Set AHD_INTCOLLISIONT_BUG for the Rev B.

Set the PREQDIS bit in DEVCONFIG1 for the B.  The
bit is misnamed, but seems to disable a work-around
that breaks on the B on PCI busses.

Add a routine for testing memory mapped register access.
This will hopefully detect things like buggy via chipsets
so that the OSM can fallback to using I/O mapped access
when memory mapped I/O simply will not work.

Approved by:	re (blanket)
2002-12-01 07:59:01 +00:00
Scott Long
fc2aa1d1b8 Add our controller name to the front of our
diagnostic "Setting Mode" messages.

Use a read of HCNTRL to flush our write to CLRCMDCMPLT
on the RevB.  This allows us to check to see if the sequencer
is paused and to initiate the interrupt collision workaround
without incuring an extra read.

Approved by:	re (blanket)
2002-12-01 07:54:53 +00:00
Scott Long
add6879424 Remove redundant check for chip type being PCI-X.
PCI-X only workarounds are automatically masked out
if we are operating in PCI mode.

Make use of ahd_pci_test_register_access()

Approved by:	re (blanket)
2002-12-01 07:52:35 +00:00
Scott Long
481a41742f Update to include new ahd_scb_timer_reset API
Move IOCell paramters into softc and add a hook for the
OSM to modify these as well as other settings prior to
committing them to the chip.

Approved by:	re (blanket)
2002-12-01 07:50:56 +00:00
Scott Long
de5305d5b6 Synchronize perforce Id tags
Approved by:	re (blanket)
2002-11-30 20:04:10 +00:00
Scott Long
4d22994e96 Bring in many bugfixes and changes obtained from formal testing:
aic7xxx.c:
        aic7xxx.h:
        aic7xxx.reg:
        aic7xxx.seq:
                Bring in the protocol violation handler from the U320
                driver and replace the NO_IDENT sequencer interrupt code
                with the PROTO_VIOLATION code.  Support for this code
                required the following changes:

                SEQ_FLAGS:
                        IDENTIFY_SEEN -> NOT_IDENTIFIED
                        Added NO_CDB_SENT

                SCB_CONTROL:
                        TARGET_SCB == STATUS_RCVD for initiator mode

                scb->flags:
                        Added SCB_TARGET_SCB since we cannot rely on
                        TARGET_SCB as a target/initiator differentiator
                        due to it being overloaded in initiator mode to
                        indicate that status has been received.

        aic7xxx.seq:
                Move data fifo CLRCHN to mesgin_rdptrs which is a safer
                location for doing this operation.  This also saves a
                sequencer instruction.

        aic7xxx.c:
        aic7xxx.h:
                Change ahc/ahd_upate_neg_request() to take a "negotiation
                type" enum that allows us to negotiate:
                        o only if the goal and current parameters differ.
                        o only if the goal is non-async
                        o always - even if the negotiation will be for async.
        aic7xxx.seq:
                Reset the FIFO whenever a short CDB transfer occurs
                so that the FIFO contents do not corrupt a future CDB
                transfer retry.

                Add support for catching the various protocol violations
                handled by ahc_handle_protocol_violation.

                Reformat some comments.

        aic7xxx.c:
        aic7xxx.h:
                Just for safety, have the aic7xxx driver probe
                the stack depth.

        aic7xxx.c:
        aic7xxx.h:
                Save and restore stack contents during diagnostics.
                Some chip variants overwrite stale entries on a
                stack "pop".

                Don't use 0 to probe the stack depth.  0 is the typical
                value used to backfill the stack if entries are overwritten
                on a "pop".

        aic7xxx.h:
                Add a missing typedef.

                Collapse SCB flag entries so they are bit contiguous.

                Add AHD_ULTRA2_XFER_PERIOD for narrow fallback calculations

        aic7xxx.c:
                Don't panic (as a diagnostic to catch bugs) if we decided to
                force the renegotiation of async even if we believe we are
                already async.  This should allow us to negotiate async instead
                of the full user goal rate during startup if bus resets are
                disabled.

                Add a space to the end of the ahc/ahd_print_devinfo routines
                so that it behaves as expected by the code that uses it.

                Only force a renegotiation on a selection timeout
                if the SCB was valid.  Doing otherwise may be dangerous
                as the connection was not valid for an unknown reason.

                Add additional diagnostic output to ahc_dump_card_state(),
                and have it use the register pretty printing functions.

                Update ahc_reg_print() to handle a NULL cur_col.

                Add a newline to ahc_dump_card_state() output.

                Bring back "use_ppr".  We need to use_ppr anytime
                doppr is true or we have non-zero protocol options.
                The later case was not handled in the recent removal
                of use_ppr.

                Move a comment and remove a useless clearing of use_ppr.

                Don't disable ENBUSFREE when single stepping on
                a DT capable controller.  We cannot re-enable unexpected
                busfree detection, so we must clear BUSFREE on each
                step instead.

                Correct the lookup of the SCB ID in ahc_handle_proto_error.

                Remove a diagnostic printf.
                Remove unecessary restoration of the STACK for older
                chips.

Approved by:	re (blanket)
2002-11-30 19:30:09 +00:00
Scott Long
dc67dad8b1 Add a routine for testing memory mapped register access.
This will hopefully detect things like buggy via chipsets
so that the OSM can fallback to using I/O mapped access
when memory mapped I/O simply will not work.

Approved by:	re (blanket)
2002-11-30 19:13:55 +00:00
Scott Long
24dd01c695 Always compile in the AHC_ALLOW_MEMIO code, but only try MEMIO if
AHC_ALLOW_MEMIO is set, or the hint hint.ahc.N.allow_memio=1 is
set in the bootloader.

Make use of ah?_pci_test_register_access().

Approved by:	re (blanket)
2002-11-30 19:11:44 +00:00
Scott Long
a3a33a2bcb Handle changes to SCB_CONTROL, scb->flags and SEQ_FLAGS
Approved by:	re (blanket)
2002-11-30 19:08:58 +00:00
Scott Long
3cb8be933d Use the new ahc_scb_timer_reset API
Remove AHC_ALLOW_MEMIO

Approved by:	re (blanket)
2002-11-30 19:06:24 +00:00
Scott Long
b8e89ffabc Add support for the Olivetti branded EISA boards.
Approved by:	re (blanket)
2002-11-30 18:00:43 +00:00
Scott Long
29dcbe8760 Revisit the printf format fixes for alpha. intmax_t doesn't exist in
RELENG_4, so cast to u_long in order to stay compatible.

Approved by: re	(blanket)
2002-11-28 04:09:29 +00:00
Scott Long
7fc23fe669 Minor updates to the aicasm:
aicasm_gram.y:
	Use a direct move from allzeros to emulate a
	mvi of 0.

aicasm_insformat.h:
	sync $Id$

aicasm_symbol.c:
	Minor header change.

Approved by:	re (blanket)
2002-11-27 07:06:43 +00:00
Scott Long
cec762959b Fix printf format problems that were stopping LINT on alpha
Submitted by:	jmallett, many others
Approved by:	re
2002-11-25 04:53:12 +00:00
Scott Long
2de8725950 Use better return types and a couple of casts to eliminate warnings on
alpha.  This will take the file out of sync with the private version
that we maintain, but alpha tinderbox has been broken for too long.

Tested on: i386, sparc64, alpha
2002-11-12 10:22:49 +00:00
Justin T. Gibbs
ccbe423c8f Never allow memory mapped I/O in PCI-X mode on controllers that
do not support that configuration.  This should fix problems with
embedded 7902 controllers running in PCI-X mode.
2002-10-16 02:59:03 +00:00
Justin T. Gibbs
655a5ce411 Remove a left over '&' from the conversion to using our
softc referenced seeprom store.

MFC after:	1 day
2002-09-30 19:55:42 +00:00
David E. O'Brien
940f2da74e Use fcntl.h from inside /sys.
Reviewd by:	scottl
2002-09-30 02:47:23 +00:00
Poul-Henning Kamp
37c841831f Be consistent about "static" functions: if the function is marked
static in its prototype, mark it static at the definition too.

Inspired by:    FlexeLint warning #512
2002-09-28 17:15:38 +00:00
Justin T. Gibbs
2eaa80698f Add a missing pair of curly braces to a conditional debug
statement.  This ensures that debug code doesn't trigger if
it isn't enabled. <blush>
2002-09-27 23:00:35 +00:00
Justin T. Gibbs
99ddedd8d3 Remove redundant inclusion of inttypes.h in aicasm_gram.y
and properly sort inttypes.h into list of includes.

Noticed by:	Mike Barcroft <mike@freebsd.org>
2002-09-27 03:23:02 +00:00
Justin T. Gibbs
c59c8a72cf Upgrade to version 1.1 of the aic79xx U320 driver.
aic79xx.c:
	o Remove redundant ahd_update_modes() call.
	o Correct panic in diagnostic should state corruption cause
	  the SCB Id to be invalid during a selection timeout.
	o Add workaround for missing BUSFREEREV feature in Rev A silicon.
	o Corect formatting nits.
	o Use register pretty printing in more places.
	o Save and restore our SCB pointer when updating the waiting queue
	  list for an "expected" LQ-out busfree.
	o In ahd_clear_intstat, deal with the missing autoclear in the
	  CLRLQO* registers.
	o BE fixup in a diagnostic printf.
	o Make sure that we are in the proper mode before disabling
	  selections in ahd_update_pending_scbs.
	o Add more diagnostics.
	o task_attribute_nonpkt_tag -> task_attribute: we don't need a
	  nonpkt_tag field anymore for allowing all 512 SCBs to be
	  used in non-packetized connections.
	o Negotiate HOLD_MCS to U320 devices.
	o Add a few additional mode assertions.
	o Restore the chip mode after clearing out the qinfifo so that
	  code using ahd_abort_scbs sees a consistent mode.
	o Simplify the DMA engine shutdown routine prior to performing
	  a bus reset.
	o Perform the sequencer restart after a chip reset prior to
	  setting up our timer to poll for the reset to be complete.
	  On some OSes, the timer could actually pre-empt us and order
	  is important here.
	o Have our "reset poller" set the expected mode since there is
	  no guarantee of what mode will be in force when we are called
	  from the OS timer.
	o Save and restore the SCB pointer in ahd_dump_card_state().  This
	  routine must not modify card state.
	o Ditto for ahd_dump_scbs().

aic79xx.h:
	o Add a few more chip bug definitions.
	o Align our tag on a 32bit boundary.

aic79xx.reg:
aic79xx.seq:
	o Start work on removing workarounds for Rev B.
	o Use a special location in scratch from for stroring
	  our SCBPTR during legacy FIFO allocations.  This corrects
	  problems in mixed packetized/non-packetized configurations
	  where calling into a FIFO task corrupted our SCBPTR.
	o Don't rely on DMA priority to guarantee that all data in
	  our FIFOs will flush prior to a command completion notification
	  going out of the command channel.  We've never seen this assumption
	  fail, but better safe than sorry.
	o Deal with missing BUSFREEREV feature in H2A.
	o Simplify disconnect list code now that the list will always
	  have only a single entry.
	o Implement the AHD_REG_SLOW_SETTLE_BUG workaround.
	o Swith to using "REG_ISR" for local mode scratch during
	  our ISR.
	o Add a missing jmp to the data_group_dma_loop after our
	  data pointers have been re-initialized by the kernel.
	o Correct test in the bitbucket code so that we actually
	  wait for the bitbucket to complete before signaling the
	  kernel of the overrun condition.
	o Reposition pkt_saveptrs to avoid a jmp instruction.
	o Update a comment to reflect that the code now waits for
	  a FIFO to drain prior to issuing a CLRCHN.

aic79xx_inline.h:
	o Remove unused untagged queue handling code.
	o Don't attempt to htole64 what could be a 32bit value.

aic79xx_pci.c:
	o Set additional bug flags for rev A chips.
2002-09-26 22:54:00 +00:00
Justin T. Gibbs
0889fb1da5 Expand vendor ID. 2002-09-26 21:50:27 +00:00
Justin T. Gibbs
a614405340 Correct a spelling error. 2002-09-26 21:50:03 +00:00
Justin T. Gibbs
09f07b3a22 Sync perforce IDs for changes first committed to FreeBSD and then
to the Adaptec driver repository.
2002-09-26 21:48:17 +00:00
Justin T. Gibbs
4ff10146c3 Use inttypes.h
Upgrade assembler to allow a move immediate of 0.
This is helpful in certain macros where we can't know the value of the
immediate in advance.
2002-09-26 21:46:19 +00:00
Scott Long
c57c56c4a1 The ahc driver should only have one devclass, not one for each bus
attachment.

Submitted by:	too many people to count
MFC after:	3 days
2002-09-22 23:03:31 +00:00
Scott Long
7a55322993 Use the correct bit value for a debug options 2002-09-01 07:14:26 +00:00
Justin T. Gibbs
887fa2a22c Sync perforce Ids. 2002-08-31 06:53:06 +00:00
Justin T. Gibbs
1a1fbd0bda Identify new controllers and the aic7901A.
Move interrupt enable to the OSM.

Remove some debugging messages.

Remove chip bug workarounds for non-production asics.
2002-08-31 06:52:27 +00:00
Justin T. Gibbs
42eac0a945 Hook up the endian macros.
Correct some comments.
2002-08-31 06:51:51 +00:00
Justin T. Gibbs
c1463ef7c0 Enable card interrupts in our OSM rather than in the core.
This ensures that we don't enter our interrupt handler until
all OSM components it might reference have been fully initialized
during attach.

Remove vestiges of untagged queue handling.

Add hints to ahd_get_scb() so it knows what type of SCB collision
management to perform for each new transaction.

Properly disable/enable IU_REQ with changes in tagged queuing and
disconnection settings passed in by CAM.
2002-08-31 06:51:15 +00:00
Justin T. Gibbs
adcf242ea9 Correct lun representation during packetized operation.
Uninline some routines that are just too big to be inlined.

Add some helper macros for SCB ID collision management.

Use a hardware SCB rather than a full SCB for the "next
SCB to queue" sentinal.

Update for new "high SCBID bit" qoutfifo delivery scheme.

If interrupts are disabled on the card, don't bother running
our interrupt handler.  Our handler was called due to a shared
interrupt, and the card's interrupts are explicitly disabled
to prevent entry into our interrupt handler.
2002-08-31 06:50:39 +00:00
Justin T. Gibbs
8fdc126111 Add a prefix to be used for assembler generated tables and
functions for register pretty-printing.

Implement "top bit of SCBID is valid bit" qoutfifo delivery scheme.

"the the" -> "the".

Remove old and never used tag collision chain handling in the
sequencer.  Tag collisions are never allowed to get as far as
on the controller.

Simplify busy target table handling routines.

Update comments to reflect reality.

Add support for catching more protocol violations.

Correct a bug in data fifo handling in mixed packetized and
non-packetized environments.  SG_STATE must be cleared even
if an SG fetch is not in progress at the time of FIFO shutdown
or we may confuse the non-packetized transaction idle-loop.
2002-08-31 06:49:55 +00:00
Justin T. Gibbs
3ebc100928 Convert to new assembler field syntax.
Add preliminary Rev B definitions.

Add QOUTFIFO_ENTRY_VALID_TAG for new qoufifo scheme.

Reserve SCB space for large luns.
2002-08-31 06:49:11 +00:00
Justin T. Gibbs
544c53b8be Updates for new non-packetized SCB-ID collision avoidance,
busy target table addressing changes, our qoufifo scheme,
and long lun support.

Drop bus reset hold delay to 25us.

Remove chip workarounds for revisions that never went to
production.

Add aic7901A identification information.

Remove untagged queue logic.
2002-08-31 06:48:42 +00:00
Justin T. Gibbs
3f293aaf2c Identify the AIC7901A as such instead of an AIC7902.
Push protocol violation handler to its own routine.  We now
properly detect and recovery from the following target induced
protocol violations:
	o Unexpected or invalid non-packetized Relesection
	o Command complete with no status message
	o Good Status after incomplete cdb transfer

Add an SCB collision avoidance algorithm that allows us to
use all 512 SCBs for non-packetized operations.  There is
still the possibility of running out of SCBs with non-colliding
tag identifiers, but the algorithm ensures that the stall will
be rare and short lived.

Convert to a read-only algorithm for validing entries in the
qoufifo.  The sequencer now toggles the high bit of the SCB
identifier on each wrap around of the qinfifo.  If the high
bit doesn't match the expected value for this pass of the
qoufifo, the entry is not valid.  This has the benefit of
working on machines that have large granularity cache write
back semantics without requiring any additional memory.

Remove lots of code related to untagged SCB queues.  Since
these controllers can keep a fully busy target table, we
will never have untagged SCB queues.

Lots of improvements to diagnostic logging.

Clarify some comments.

Don't clear BUSFREE interrupt enable in SIMODE1 in the SELTO
handler.  Just clearing the interrupt status is sufficient and
this avoids the chance of disabling busfree detection in connection
that occurs while we are handling the busfree interrupt.

Clear all possible interrupt sources when handling a busfree
interrupt.  The hardware clears some but not all of them.

Don't panic if we get into the default SCSIINT handler.
Dump the card state and clear all interrupt sources in the
hope that we can continue.

LASTPHASE != PREVPHASE.  Use the correct PREVPHASE for testing
against values in the PERRDIAG register.

According to SPI4, the bus free that is required after certain
PPR negotiations will only occur at the end of all message phases.
Handle the bus free if it occurs after a transaction in either
the message-in or message-out phases.  The busfree can also occur
if the status of IU_REQ changes due to a WDTR or SDTR message.
We now set the expect busfree flag in ahd_set_syncrate so that
it works regardless of message type.

Correct a problem with missing certain busfree events.  The
chip supports single-stepping even if a SCSIINT is pending.
This obviates the need to clear all of the SCSI interrupt enables
prior to single stepping.  Since ENBUSFREE can only be disabled
manually and not re-enabled, avoiding touching this bit in the
single-step case yields reliable bus free detection.

Enhance ahd_clear_intstat to clear all SCSIINT sources.

Only use ahd_update_pending_scbs() if we are active on the
bus.  We cannot modify the "MK_MESSAGE" bits on SCBs in the
execution queue if a selection might be in process since
the sequencer uses this bit to detect PPR negotiation to
a target with an outstanding IU_REQ agreement.

Allocate the SCB delivery mechansim's sentinal SCB specially
so we don't waste a valid SCB for this task.

Move tranceive state settle logic to ahd_chip_init() since
this needs to occur after every chip reset, not just the
chip reset that happens during primary driver initialization.

Correct a bug with transmitting lun information in packetized
connections.

Restrict busy target table operations to the range of luns
that can be used for non-packetized connections.  Larger luns
can only be accessed in packetized mode.

Correct a busy target table addressing bug.

Be more careful about how we shutdown the DMA engines during
bus reset events.

Only freeze the SIMQ once regardless of the number of bus
reset events that occur while we are polling for the resets
to stop.

Don't rely on the sequencer remaining paused() during our
reset poll.  It is safe for the sequencer to run during this
time, and many callers to the bus reset code would need to
be modified to make this assumption universally true.

Even if we are not going to clobber SCB state when an auto-request
sense SCB has a check condition, we must still unfreeze the queue.
Re-arrange the BAD STATUS handler to handle this case appropriately.

Modify the SCB download size depending on whether long luns are
being stored in the SCB.

Add ahd_print_register() for pretty printing register diagnostics.

Don't trust that the flexport logic to detect the presence of
a seeprom is available.  It may not be on some motherboard
implementations.

"the the" -> "the"
2002-08-31 06:48:14 +00:00
Justin T. Gibbs
d10a3e08c6 If interrupts are disabled on the card, don't bother running
our interrupt handler.  Our handler was called due to a shared
interrupt, and the card's interrupts are explicitly disabled
to prevent entry into our interrupt handler.
2002-08-31 06:46:37 +00:00
Justin T. Gibbs
6c746b27b7 Update Perforce Ids. 2002-08-31 06:45:28 +00:00