aa1cd79b7f
7 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
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.
|
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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) |
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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) |
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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. |
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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. |
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Justin T. Gibbs
|
cdd49e97b4 | Hook up the ahd driver. | ||
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Justin T. Gibbs
|
17d2475554 |
Enter the ahd driver which supports the Adaptec AIC7902 Ultra320, PCI-X
SCSI Controller chip. |