2002-06-05 19:52:45 +00:00
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/*
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ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
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* Bus independent FreeBSD shim for the aic79xx based Adaptec SCSI controllers
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2002-06-05 19:52:45 +00:00
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*
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Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
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* Copyright (c) 1994-2002, 2004 Justin T. Gibbs.
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2002-08-31 06:51:15 +00:00
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* Copyright (c) 2001-2002 Adaptec Inc.
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2002-06-05 19:52:45 +00:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU Public License ("GPL").
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
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* $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#35 $
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2002-06-05 19:52:45 +00:00
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*/
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2003-08-24 17:55:58 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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2002-06-05 19:52:45 +00:00
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#include <dev/aic7xxx/aic79xx_osm.h>
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#include <dev/aic7xxx/aic79xx_inline.h>
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ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
#include <sys/kthread.h>
|
|
|
|
|
|
2002-06-05 19:52:45 +00:00
|
|
|
#include "opt_ddb.h"
|
|
|
|
|
#ifdef DDB
|
|
|
|
|
#include <ddb/ddb.h>
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifndef AHD_TMODE_ENABLE
|
|
|
|
|
#define AHD_TMODE_ENABLE 0
|
|
|
|
|
#endif
|
|
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
#include <dev/aic7xxx/aic_osm_lib.c>
|
|
|
|
|
|
2002-06-05 19:52:45 +00:00
|
|
|
#define ccb_scb_ptr spriv_ptr0
|
|
|
|
|
|
|
|
|
|
#if UNUSED
|
|
|
|
|
static void ahd_dump_targcmd(struct target_cmd *cmd);
|
|
|
|
|
#endif
|
|
|
|
|
static int ahd_modevent(module_t mod, int type, void *data);
|
|
|
|
|
static void ahd_action(struct cam_sim *sim, union ccb *ccb);
|
|
|
|
|
static void ahd_set_tran_settings(struct ahd_softc *ahd,
|
|
|
|
|
int our_id, char channel,
|
|
|
|
|
struct ccb_trans_settings *cts);
|
|
|
|
|
static void ahd_get_tran_settings(struct ahd_softc *ahd,
|
|
|
|
|
int our_id, char channel,
|
|
|
|
|
struct ccb_trans_settings *cts);
|
|
|
|
|
static void ahd_async(void *callback_arg, uint32_t code,
|
|
|
|
|
struct cam_path *path, void *arg);
|
|
|
|
|
static void ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
|
|
|
|
|
int nsegments, int error);
|
|
|
|
|
static void ahd_poll(struct cam_sim *sim);
|
|
|
|
|
static void ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
|
|
|
|
|
struct ccb_scsiio *csio, struct scb *scb);
|
|
|
|
|
static void ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim,
|
|
|
|
|
union ccb *ccb);
|
|
|
|
|
static int ahd_create_path(struct ahd_softc *ahd,
|
|
|
|
|
char channel, u_int target, u_int lun,
|
|
|
|
|
struct cam_path **path);
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
ahd_create_path(struct ahd_softc *ahd, char channel, u_int target,
|
|
|
|
|
u_int lun, struct cam_path **path)
|
|
|
|
|
{
|
|
|
|
|
path_id_t path_id;
|
|
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
path_id = cam_sim_path(ahd->platform_data->sim);
|
2002-06-05 19:52:45 +00:00
|
|
|
return (xpt_create_path(path, /*periph*/NULL,
|
|
|
|
|
path_id, target, lun));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
ahd_map_int(struct ahd_softc *ahd)
|
|
|
|
|
{
|
|
|
|
|
int error;
|
|
|
|
|
|
|
|
|
|
/* Hook up our interrupt handler */
|
|
|
|
|
error = bus_setup_intr(ahd->dev_softc, ahd->platform_data->irq,
|
|
|
|
|
INTR_TYPE_CAM, ahd_platform_intr, ahd,
|
|
|
|
|
&ahd->platform_data->ih);
|
|
|
|
|
if (error != 0)
|
|
|
|
|
device_printf(ahd->dev_softc, "bus_setup_intr() failed: %d\n",
|
|
|
|
|
error);
|
|
|
|
|
return (error);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Attach all the sub-devices we can find
|
|
|
|
|
*/
|
|
|
|
|
int
|
|
|
|
|
ahd_attach(struct ahd_softc *ahd)
|
|
|
|
|
{
|
|
|
|
|
char ahd_info[256];
|
|
|
|
|
struct ccb_setasync csa;
|
|
|
|
|
struct cam_devq *devq;
|
|
|
|
|
struct cam_sim *sim;
|
|
|
|
|
struct cam_path *path;
|
|
|
|
|
long s;
|
|
|
|
|
int count;
|
|
|
|
|
|
|
|
|
|
count = 0;
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
devq = NULL;
|
2002-06-05 19:52:45 +00:00
|
|
|
sim = NULL;
|
|
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
/*
|
|
|
|
|
* Create a thread to perform all recovery.
|
|
|
|
|
*/
|
|
|
|
|
if (ahd_spawn_recovery_thread(ahd) != 0)
|
|
|
|
|
goto fail;
|
|
|
|
|
|
2002-06-05 19:52:45 +00:00
|
|
|
ahd_controller_info(ahd, ahd_info);
|
|
|
|
|
printf("%s\n", ahd_info);
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Create the device queue for our SIM(s).
|
|
|
|
|
*/
|
|
|
|
|
devq = cam_simq_alloc(AHD_MAX_QUEUE);
|
|
|
|
|
if (devq == NULL)
|
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Construct our SIM entry
|
|
|
|
|
*/
|
|
|
|
|
sim = cam_sim_alloc(ahd_action, ahd_poll, "ahd", ahd,
|
|
|
|
|
device_get_unit(ahd->dev_softc),
|
|
|
|
|
1, /*XXX*/256, devq);
|
|
|
|
|
if (sim == NULL) {
|
|
|
|
|
cam_simq_free(devq);
|
|
|
|
|
goto fail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (xpt_bus_register(sim, /*bus_id*/0) != CAM_SUCCESS) {
|
|
|
|
|
cam_sim_free(sim, /*free_devq*/TRUE);
|
|
|
|
|
sim = NULL;
|
|
|
|
|
goto fail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (xpt_create_path(&path, /*periph*/NULL,
|
|
|
|
|
cam_sim_path(sim), CAM_TARGET_WILDCARD,
|
|
|
|
|
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
|
|
|
|
|
xpt_bus_deregister(cam_sim_path(sim));
|
|
|
|
|
cam_sim_free(sim, /*free_devq*/TRUE);
|
|
|
|
|
sim = NULL;
|
|
|
|
|
goto fail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
|
|
|
|
|
csa.ccb_h.func_code = XPT_SASYNC_CB;
|
|
|
|
|
csa.event_enable = AC_LOST_DEVICE;
|
|
|
|
|
csa.callback = ahd_async;
|
|
|
|
|
csa.callback_arg = sim;
|
|
|
|
|
xpt_action((union ccb *)&csa);
|
|
|
|
|
count++;
|
|
|
|
|
|
|
|
|
|
fail:
|
|
|
|
|
ahd->platform_data->sim = sim;
|
|
|
|
|
ahd->platform_data->path = path;
|
2002-08-31 06:51:15 +00:00
|
|
|
if (count != 0) {
|
2002-06-05 19:52:45 +00:00
|
|
|
/* We have to wait until after any system dumps... */
|
|
|
|
|
ahd->platform_data->eh =
|
|
|
|
|
EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
|
|
|
|
|
ahd, SHUTDOWN_PRI_DEFAULT);
|
2002-08-31 06:51:15 +00:00
|
|
|
ahd_intr_enable(ahd, TRUE);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ahd_unlock(ahd, &s);
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
return (count);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Catch an interrupt from the adapter
|
|
|
|
|
*/
|
|
|
|
|
void
|
|
|
|
|
ahd_platform_intr(void *arg)
|
|
|
|
|
{
|
|
|
|
|
struct ahd_softc *ahd;
|
|
|
|
|
|
|
|
|
|
ahd = (struct ahd_softc *)arg;
|
|
|
|
|
ahd_intr(ahd);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* We have an scb which has been processed by the
|
|
|
|
|
* adaptor, now we look to see how the operation
|
|
|
|
|
* went.
|
|
|
|
|
*/
|
|
|
|
|
void
|
|
|
|
|
ahd_done(struct ahd_softc *ahd, struct scb *scb)
|
|
|
|
|
{
|
|
|
|
|
union ccb *ccb;
|
|
|
|
|
|
|
|
|
|
CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
|
|
|
|
|
("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
|
|
|
|
|
|
|
|
|
|
ccb = scb->io_ctx;
|
|
|
|
|
LIST_REMOVE(scb, pending_links);
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
if ((scb->flags & SCB_TIMEDOUT) != 0)
|
|
|
|
|
LIST_REMOVE(scb, timedout_links);
|
2002-06-05 19:52:45 +00:00
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
untimeout(ahd_platform_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch);
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
|
2003-05-27 04:59:59 +00:00
|
|
|
bus_dmasync_op_t op;
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
|
|
|
|
|
op = BUS_DMASYNC_POSTREAD;
|
|
|
|
|
else
|
|
|
|
|
op = BUS_DMASYNC_POSTWRITE;
|
|
|
|
|
bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
|
|
|
|
|
bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef AHD_TARGET_MODE
|
|
|
|
|
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
|
|
|
|
|
struct cam_path *ccb_path;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* If we have finally disconnected, clean up our
|
|
|
|
|
* pending device state.
|
|
|
|
|
* XXX - There may be error states that cause where
|
|
|
|
|
* we will remain connected.
|
|
|
|
|
*/
|
|
|
|
|
ccb_path = ccb->ccb_h.path;
|
|
|
|
|
if (ahd->pending_device != NULL
|
|
|
|
|
&& xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
|
|
|
|
|
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
|
|
|
|
|
ahd->pending_device = NULL;
|
|
|
|
|
} else {
|
|
|
|
|
xpt_print_path(ccb->ccb_h.path);
|
|
|
|
|
printf("Still disconnected\n");
|
|
|
|
|
ahd_freeze_ccb(ccb);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
|
2002-06-05 19:52:45 +00:00
|
|
|
ccb->ccb_h.status |= CAM_REQ_CMP;
|
|
|
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
|
|
|
|
|
struct scb *list_scb;
|
|
|
|
|
|
2004-08-17 00:14:31 +00:00
|
|
|
ahd->scb_data.recovery_scbs--;
|
2002-06-05 19:52:45 +00:00
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
if (aic_get_transaction_status(scb) == CAM_BDR_SENT
|
|
|
|
|
|| aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
|
|
|
|
|
aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
|
|
|
|
|
|
2004-08-17 00:14:31 +00:00
|
|
|
if (ahd->scb_data.recovery_scbs == 0) {
|
|
|
|
|
/*
|
|
|
|
|
* All recovery actions have completed successfully,
|
|
|
|
|
* so reinstate the timeouts for all other pending
|
|
|
|
|
* commands.
|
|
|
|
|
*/
|
|
|
|
|
LIST_FOREACH(list_scb,
|
|
|
|
|
&ahd->pending_scbs, pending_links) {
|
|
|
|
|
|
|
|
|
|
aic_scb_timer_reset(scb, aic_get_timeout(scb));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ahd_print_path(ahd, scb);
|
|
|
|
|
printf("no longer in timeout, status = %x\n",
|
|
|
|
|
ccb->ccb_h.status);
|
|
|
|
|
}
|
2002-06-05 19:52:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Don't clobber any existing error state */
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
|
2002-06-05 19:52:45 +00:00
|
|
|
ccb->ccb_h.status |= CAM_REQ_CMP;
|
|
|
|
|
} else if ((scb->flags & SCB_SENSE) != 0) {
|
|
|
|
|
/*
|
|
|
|
|
* We performed autosense retrieval.
|
|
|
|
|
*
|
|
|
|
|
* Zero any sense not transferred by the
|
|
|
|
|
* device. The SCSI spec mandates that any
|
|
|
|
|
* untransfered data should be assumed to be
|
|
|
|
|
* zero. Complete the 'bounce' of sense information
|
|
|
|
|
* through buffers accessible via bus-space by
|
|
|
|
|
* copying it into the clients csio.
|
|
|
|
|
*/
|
|
|
|
|
memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
|
|
|
|
|
memcpy(&ccb->csio.sense_data,
|
|
|
|
|
ahd_get_sense_buf(ahd, scb),
|
|
|
|
|
/* XXX What size do we want to use??? */
|
|
|
|
|
sizeof(ccb->csio.sense_data)
|
|
|
|
|
- ccb->csio.sense_resid);
|
|
|
|
|
scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
|
|
|
|
|
} else if ((scb->flags & SCB_PKT_SENSE) != 0) {
|
|
|
|
|
struct scsi_status_iu_header *siu;
|
|
|
|
|
u_int sense_len;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Copy only the sense data into the provided buffer.
|
|
|
|
|
*/
|
|
|
|
|
siu = (struct scsi_status_iu_header *)scb->sense_data;
|
|
|
|
|
sense_len = MIN(scsi_4btoul(siu->sense_length),
|
|
|
|
|
sizeof(ccb->csio.sense_data));
|
|
|
|
|
memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
|
|
|
|
|
memcpy(&ccb->csio.sense_data,
|
|
|
|
|
ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
|
|
|
|
|
sense_len);
|
|
|
|
|
printf("Copied %d bytes of sense data offset %d:", sense_len,
|
|
|
|
|
SIU_SENSE_OFFSET(siu));
|
|
|
|
|
for (i = 0; i < sense_len; i++)
|
|
|
|
|
printf(" 0x%x", ((uint8_t *)&ccb->csio.sense_data)[i]);
|
|
|
|
|
printf("\n");
|
|
|
|
|
scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
|
|
|
|
|
}
|
|
|
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_action(struct cam_sim *sim, union ccb *ccb)
|
|
|
|
|
{
|
|
|
|
|
struct ahd_softc *ahd;
|
|
|
|
|
#ifdef AHD_TARGET_MODE
|
|
|
|
|
struct ahd_tmode_lstate *lstate;
|
|
|
|
|
#endif
|
|
|
|
|
u_int target_id;
|
|
|
|
|
u_int our_id;
|
|
|
|
|
long s;
|
|
|
|
|
|
|
|
|
|
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
|
|
|
|
|
|
|
|
|
|
ahd = (struct ahd_softc *)cam_sim_softc(sim);
|
|
|
|
|
|
|
|
|
|
target_id = ccb->ccb_h.target_id;
|
|
|
|
|
our_id = SIM_SCSI_ID(ahd, sim);
|
|
|
|
|
|
|
|
|
|
switch (ccb->ccb_h.func_code) {
|
|
|
|
|
/* Common cases first */
|
|
|
|
|
#ifdef AHD_TARGET_MODE
|
|
|
|
|
case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
|
|
|
|
|
case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
|
|
|
|
|
{
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
cam_status status;
|
|
|
|
|
|
|
|
|
|
status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
|
|
|
|
|
&lstate, TRUE);
|
|
|
|
|
|
|
|
|
|
if (status != CAM_REQ_CMP) {
|
|
|
|
|
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
|
|
|
|
|
/* Response from the black hole device */
|
|
|
|
|
tstate = NULL;
|
|
|
|
|
lstate = ahd->black_hole;
|
|
|
|
|
} else {
|
|
|
|
|
ccb->ccb_h.status = status;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
|
|
|
|
|
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
|
|
|
|
|
sim_links.sle);
|
|
|
|
|
ccb->ccb_h.status = CAM_REQ_INPROG;
|
|
|
|
|
if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
|
|
|
|
|
ahd_run_tqinfifo(ahd, /*paused*/FALSE);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The target_id represents the target we attempt to
|
|
|
|
|
* select. In target mode, this is the initiator of
|
|
|
|
|
* the original command.
|
|
|
|
|
*/
|
|
|
|
|
our_id = target_id;
|
|
|
|
|
target_id = ccb->csio.init_id;
|
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
case XPT_SCSI_IO: /* Execute the requested I/O operation */
|
|
|
|
|
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
|
|
|
|
|
{
|
|
|
|
|
struct scb *scb;
|
|
|
|
|
struct hardware_scb *hscb;
|
2002-08-31 06:51:15 +00:00
|
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
u_int col_idx;
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
if ((ahd->flags & AHD_INITIATORROLE) == 0
|
|
|
|
|
&& (ccb->ccb_h.func_code == XPT_SCSI_IO
|
|
|
|
|
|| ccb->ccb_h.func_code == XPT_RESET_DEV)) {
|
|
|
|
|
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* get an scb to use.
|
|
|
|
|
*/
|
|
|
|
|
ahd_lock(ahd, &s);
|
2002-08-31 06:51:15 +00:00
|
|
|
tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
|
|
|
|
|
target_id, &tstate);
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
|
|
|
|
|
|| (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
|
|
|
|
|
|| ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
|
|
|
|
|
col_idx = AHD_NEVER_COL_IDX;
|
|
|
|
|
} else {
|
|
|
|
|
col_idx = AHD_BUILD_COL_IDX(target_id,
|
|
|
|
|
ccb->ccb_h.target_lun);
|
|
|
|
|
}
|
|
|
|
|
if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
xpt_freeze_simq(sim, /*count*/1);
|
|
|
|
|
ahd->flags |= AHD_RESOURCE_SHORTAGE;
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
ccb->ccb_h.status = CAM_REQUEUE_REQ;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
|
|
|
|
|
hscb = scb->hscb;
|
|
|
|
|
|
|
|
|
|
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
|
|
|
|
|
("start scb(%p)\n", scb));
|
|
|
|
|
scb->io_ctx = ccb;
|
|
|
|
|
/*
|
|
|
|
|
* So we can find the SCB when an abort is requested
|
|
|
|
|
*/
|
|
|
|
|
ccb->ccb_h.ccb_scb_ptr = scb;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Put all the arguments for the xfer in the scb
|
|
|
|
|
*/
|
|
|
|
|
hscb->control = 0;
|
|
|
|
|
hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
|
|
|
|
|
hscb->lun = ccb->ccb_h.target_lun;
|
|
|
|
|
if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
|
|
|
|
|
hscb->cdb_len = 0;
|
|
|
|
|
scb->flags |= SCB_DEVICE_RESET;
|
|
|
|
|
hscb->control |= MK_MESSAGE;
|
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
|
|
|
hscb->task_management = SIU_TASKMGMT_LUN_RESET;
|
2002-06-05 19:52:45 +00:00
|
|
|
ahd_execute_scb(scb, NULL, 0, 0);
|
|
|
|
|
} else {
|
|
|
|
|
#ifdef AHD_TARGET_MODE
|
|
|
|
|
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
|
|
|
|
|
struct target_data *tdata;
|
|
|
|
|
|
|
|
|
|
tdata = &hscb->shared_data.tdata;
|
|
|
|
|
if (ahd->pending_device == lstate)
|
|
|
|
|
scb->flags |= SCB_TARGET_IMMEDIATE;
|
|
|
|
|
hscb->control |= TARGET_SCB;
|
|
|
|
|
tdata->target_phases = 0;
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
|
|
|
|
|
tdata->target_phases |= SPHASE_PENDING;
|
|
|
|
|
tdata->scsi_status =
|
|
|
|
|
ccb->csio.scsi_status;
|
|
|
|
|
}
|
|
|
|
|
if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
|
|
|
|
|
tdata->target_phases |= NO_DISCONNECT;
|
|
|
|
|
|
|
|
|
|
tdata->initiator_tag =
|
|
|
|
|
ahd_htole16(ccb->csio.tag_id);
|
|
|
|
|
}
|
|
|
|
|
#endif
|
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
|
|
|
hscb->task_management = 0;
|
2002-06-05 19:52:45 +00:00
|
|
|
if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
|
|
|
|
|
hscb->control |= ccb->csio.tag_action;
|
|
|
|
|
|
|
|
|
|
ahd_setup_data(ahd, sim, &ccb->csio, scb);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
#ifdef AHD_TARGET_MODE
|
|
|
|
|
case XPT_NOTIFY_ACK:
|
|
|
|
|
case XPT_IMMED_NOTIFY:
|
|
|
|
|
{
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
struct ahd_tmode_lstate *lstate;
|
|
|
|
|
cam_status status;
|
|
|
|
|
|
|
|
|
|
status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
|
|
|
|
|
&lstate, TRUE);
|
|
|
|
|
|
|
|
|
|
if (status != CAM_REQ_CMP) {
|
|
|
|
|
ccb->ccb_h.status = status;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
|
|
|
|
|
sim_links.sle);
|
|
|
|
|
ccb->ccb_h.status = CAM_REQ_INPROG;
|
|
|
|
|
ahd_send_lstate_events(ahd, lstate);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case XPT_EN_LUN: /* Enable LUN as a target */
|
|
|
|
|
ahd_handle_en_lun(ahd, sim, ccb);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
#endif
|
|
|
|
|
case XPT_ABORT: /* Abort the specified CCB */
|
|
|
|
|
{
|
|
|
|
|
ahd_abort_ccb(ahd, sim, ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case XPT_SET_TRAN_SETTINGS:
|
|
|
|
|
{
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
|
|
|
|
|
SIM_CHANNEL(ahd, sim), &ccb->cts);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case XPT_GET_TRAN_SETTINGS:
|
|
|
|
|
/* Get default/user set transfer settings for the target */
|
|
|
|
|
{
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
|
|
|
|
|
SIM_CHANNEL(ahd, sim), &ccb->cts);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case XPT_CALC_GEOMETRY:
|
|
|
|
|
{
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
aic_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
|
2002-06-05 19:52:45 +00:00
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
|
|
|
|
|
{
|
|
|
|
|
int found;
|
|
|
|
|
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
|
|
|
|
|
/*initiate reset*/TRUE);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
if (bootverbose) {
|
|
|
|
|
xpt_print_path(SIM_PATH(ahd, sim));
|
|
|
|
|
printf("SCSI bus reset delivered. "
|
|
|
|
|
"%d SCBs aborted.\n", found);
|
|
|
|
|
}
|
|
|
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case XPT_TERM_IO: /* Terminate the I/O process */
|
|
|
|
|
/* XXX Implement */
|
|
|
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
case XPT_PATH_INQ: /* Path routing inquiry */
|
|
|
|
|
{
|
|
|
|
|
struct ccb_pathinq *cpi = &ccb->cpi;
|
|
|
|
|
|
|
|
|
|
cpi->version_num = 1; /* XXX??? */
|
|
|
|
|
cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
|
|
|
|
|
if ((ahd->features & AHD_WIDE) != 0)
|
|
|
|
|
cpi->hba_inquiry |= PI_WIDE_16;
|
|
|
|
|
if ((ahd->features & AHD_TARGETMODE) != 0) {
|
|
|
|
|
cpi->target_sprt = PIT_PROCESSOR
|
|
|
|
|
| PIT_DISCONNECT
|
|
|
|
|
| PIT_TERM_IO;
|
|
|
|
|
} else {
|
|
|
|
|
cpi->target_sprt = 0;
|
|
|
|
|
}
|
|
|
|
|
cpi->hba_misc = 0;
|
|
|
|
|
cpi->hba_eng_cnt = 0;
|
|
|
|
|
cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
|
|
|
|
|
cpi->max_lun = AHD_NUM_LUNS - 1;
|
|
|
|
|
cpi->initiator_id = ahd->our_id;
|
|
|
|
|
if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
|
|
|
|
|
cpi->hba_misc |= PIM_NOBUSRESET;
|
|
|
|
|
}
|
|
|
|
|
cpi->bus_id = cam_sim_bus(sim);
|
|
|
|
|
cpi->base_transfer_speed = 3300;
|
|
|
|
|
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
|
|
|
|
|
strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
|
|
|
|
|
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
|
|
|
|
|
cpi->unit_number = cam_sim_unit(sim);
|
|
|
|
|
#ifdef AHD_NEW_TRAN_SETTINGS
|
|
|
|
|
cpi->protocol = PROTO_SCSI;
|
|
|
|
|
cpi->protocol_version = SCSI_REV_2;
|
|
|
|
|
cpi->transport = XPORT_SPI;
|
|
|
|
|
cpi->transport_version = 2;
|
|
|
|
|
cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
|
|
|
|
|
cpi->transport_version = 4;
|
|
|
|
|
cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST;
|
|
|
|
|
#endif
|
|
|
|
|
cpi->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
default:
|
|
|
|
|
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
|
|
|
|
|
struct ccb_trans_settings *cts)
|
|
|
|
|
{
|
|
|
|
|
#ifdef AHD_NEW_TRAN_SETTINGS
|
|
|
|
|
struct ahd_devinfo devinfo;
|
|
|
|
|
struct ccb_trans_settings_scsi *scsi;
|
|
|
|
|
struct ccb_trans_settings_spi *spi;
|
|
|
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
uint16_t *discenable;
|
|
|
|
|
uint16_t *tagenable;
|
|
|
|
|
u_int update_type;
|
|
|
|
|
|
|
|
|
|
scsi = &cts->proto_specific.scsi;
|
|
|
|
|
spi = &cts->xport_specific.spi;
|
|
|
|
|
ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
|
|
|
|
|
cts->ccb_h.target_id,
|
|
|
|
|
cts->ccb_h.target_lun,
|
|
|
|
|
SIM_CHANNEL(ahd, sim),
|
|
|
|
|
ROLE_UNKNOWN);
|
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
|
|
|
|
|
devinfo.our_scsiid,
|
|
|
|
|
devinfo.target, &tstate);
|
|
|
|
|
update_type = 0;
|
|
|
|
|
if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
|
|
|
|
|
update_type |= AHD_TRANS_GOAL;
|
|
|
|
|
discenable = &tstate->discenable;
|
|
|
|
|
tagenable = &tstate->tagenable;
|
|
|
|
|
tinfo->curr.protocol_version = cts->protocol_version;
|
|
|
|
|
tinfo->curr.transport_version = cts->transport_version;
|
|
|
|
|
tinfo->goal.protocol_version = cts->protocol_version;
|
|
|
|
|
tinfo->goal.transport_version = cts->transport_version;
|
|
|
|
|
} else if (cts->type == CTS_TYPE_USER_SETTINGS) {
|
|
|
|
|
update_type |= AHD_TRANS_USER;
|
|
|
|
|
discenable = &ahd->user_discenable;
|
|
|
|
|
tagenable = &ahd->user_tagenable;
|
|
|
|
|
tinfo->user.protocol_version = cts->protocol_version;
|
|
|
|
|
tinfo->user.transport_version = cts->transport_version;
|
|
|
|
|
} else {
|
|
|
|
|
cts->ccb_h.status = CAM_REQ_INVALID;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
|
|
|
|
|
if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
|
|
|
|
|
*discenable |= devinfo.target_mask;
|
|
|
|
|
else
|
|
|
|
|
*discenable &= ~devinfo.target_mask;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
|
|
|
|
|
if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
|
|
|
|
|
*tagenable |= devinfo.target_mask;
|
|
|
|
|
else
|
|
|
|
|
*tagenable &= ~devinfo.target_mask;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
|
|
|
|
|
ahd_validate_width(ahd, /*tinfo limit*/NULL,
|
|
|
|
|
&spi->bus_width, ROLE_UNKNOWN);
|
|
|
|
|
ahd_set_width(ahd, &devinfo, spi->bus_width,
|
|
|
|
|
update_type, /*paused*/FALSE);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
|
|
|
|
|
if (update_type == AHD_TRANS_USER)
|
|
|
|
|
spi->ppr_options = tinfo->user.ppr_options;
|
|
|
|
|
else
|
|
|
|
|
spi->ppr_options = tinfo->goal.ppr_options;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
|
|
|
|
|
if (update_type == AHD_TRANS_USER)
|
|
|
|
|
spi->sync_offset = tinfo->user.offset;
|
|
|
|
|
else
|
|
|
|
|
spi->sync_offset = tinfo->goal.offset;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
|
|
|
|
|
if (update_type == AHD_TRANS_USER)
|
|
|
|
|
spi->sync_period = tinfo->user.period;
|
|
|
|
|
else
|
|
|
|
|
spi->sync_period = tinfo->goal.period;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
|
|
|
|
|
|| ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
|
|
|
|
|
u_int maxsync;
|
|
|
|
|
|
|
|
|
|
maxsync = AHD_SYNCRATE_MAX;
|
|
|
|
|
|
|
|
|
|
if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
|
|
|
|
|
spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
|
|
|
|
|
|
|
|
|
|
if ((*discenable & devinfo.target_mask) == 0)
|
|
|
|
|
spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
|
|
|
|
|
|
|
|
|
|
ahd_find_syncrate(ahd, &spi->sync_period,
|
|
|
|
|
&spi->ppr_options, maxsync);
|
|
|
|
|
ahd_validate_offset(ahd, /*tinfo limit*/NULL,
|
|
|
|
|
spi->sync_period, &spi->sync_offset,
|
|
|
|
|
spi->bus_width, ROLE_UNKNOWN);
|
|
|
|
|
|
|
|
|
|
/* We use a period of 0 to represent async */
|
|
|
|
|
if (spi->sync_offset == 0) {
|
|
|
|
|
spi->sync_period = 0;
|
|
|
|
|
spi->ppr_options = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
|
|
|
|
|
spi->sync_offset, spi->ppr_options,
|
|
|
|
|
update_type, /*paused*/FALSE);
|
|
|
|
|
}
|
|
|
|
|
cts->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
#else
|
|
|
|
|
struct ahd_devinfo devinfo;
|
|
|
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
uint16_t *discenable;
|
|
|
|
|
uint16_t *tagenable;
|
|
|
|
|
u_int update_type;
|
|
|
|
|
|
|
|
|
|
ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
|
|
|
|
|
cts->ccb_h.target_id,
|
|
|
|
|
cts->ccb_h.target_lun,
|
|
|
|
|
SIM_CHANNEL(ahd, sim),
|
|
|
|
|
ROLE_UNKNOWN);
|
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
|
|
|
|
|
devinfo.our_scsiid,
|
|
|
|
|
devinfo.target, &tstate);
|
|
|
|
|
update_type = 0;
|
|
|
|
|
if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
|
|
|
|
|
update_type |= AHD_TRANS_GOAL;
|
|
|
|
|
discenable = &tstate->discenable;
|
|
|
|
|
tagenable = &tstate->tagenable;
|
|
|
|
|
} else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
|
|
|
|
|
update_type |= AHD_TRANS_USER;
|
|
|
|
|
discenable = &ahd->user_discenable;
|
|
|
|
|
tagenable = &ahd->user_tagenable;
|
|
|
|
|
} else {
|
|
|
|
|
cts->ccb_h.status = CAM_REQ_INVALID;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
|
|
|
|
|
if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
|
|
|
|
|
*discenable |= devinfo.target_mask;
|
|
|
|
|
else
|
|
|
|
|
*discenable &= ~devinfo.target_mask;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
|
|
|
|
|
if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
|
|
|
|
|
*tagenable |= devinfo.target_mask;
|
|
|
|
|
else
|
|
|
|
|
*tagenable &= ~devinfo.target_mask;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
|
|
|
|
|
ahd_validate_width(ahd, /*tinfo limit*/NULL,
|
|
|
|
|
&cts->bus_width, ROLE_UNKNOWN);
|
|
|
|
|
ahd_set_width(ahd, &devinfo, cts->bus_width,
|
|
|
|
|
update_type, /*paused*/FALSE);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
|
|
|
|
|
if (update_type == AHD_TRANS_USER)
|
|
|
|
|
cts->sync_offset = tinfo->user.offset;
|
|
|
|
|
else
|
|
|
|
|
cts->sync_offset = tinfo->goal.offset;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
|
|
|
|
|
if (update_type == AHD_TRANS_USER)
|
|
|
|
|
cts->sync_period = tinfo->user.period;
|
|
|
|
|
else
|
|
|
|
|
cts->sync_period = tinfo->goal.period;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
|
2002-08-31 06:51:15 +00:00
|
|
|
|| ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
|
|
|
|
|
|| ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
|
|
|
|
|
|| ((cts->valid & CCB_TRANS_DISC_VALID) != 0)) {
|
2002-06-05 19:52:45 +00:00
|
|
|
u_int ppr_options;
|
|
|
|
|
u_int maxsync;
|
|
|
|
|
|
|
|
|
|
maxsync = AHD_SYNCRATE_MAX;
|
|
|
|
|
ppr_options = 0;
|
|
|
|
|
if (cts->sync_period <= AHD_SYNCRATE_DT
|
|
|
|
|
&& cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT) {
|
|
|
|
|
ppr_options = tinfo->user.ppr_options
|
|
|
|
|
| MSG_EXT_PPR_DT_REQ;
|
|
|
|
|
}
|
|
|
|
|
|
2002-08-31 06:51:15 +00:00
|
|
|
if ((*tagenable & devinfo.target_mask) == 0
|
|
|
|
|
|| (*discenable & devinfo.target_mask) == 0)
|
|
|
|
|
ppr_options &= ~MSG_EXT_PPR_IU_REQ;
|
|
|
|
|
|
2002-06-05 19:52:45 +00:00
|
|
|
ahd_find_syncrate(ahd, &cts->sync_period,
|
|
|
|
|
&ppr_options, maxsync);
|
|
|
|
|
ahd_validate_offset(ahd, /*tinfo limit*/NULL,
|
|
|
|
|
cts->sync_period, &cts->sync_offset,
|
|
|
|
|
MSG_EXT_WDTR_BUS_8_BIT,
|
|
|
|
|
ROLE_UNKNOWN);
|
|
|
|
|
|
|
|
|
|
/* We use a period of 0 to represent async */
|
|
|
|
|
if (cts->sync_offset == 0) {
|
|
|
|
|
cts->sync_period = 0;
|
|
|
|
|
ppr_options = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (ppr_options != 0
|
|
|
|
|
&& tinfo->user.transport_version >= 3) {
|
|
|
|
|
tinfo->goal.transport_version =
|
|
|
|
|
tinfo->user.transport_version;
|
|
|
|
|
tinfo->curr.transport_version =
|
|
|
|
|
tinfo->user.transport_version;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ahd_set_syncrate(ahd, &devinfo, cts->sync_period,
|
|
|
|
|
cts->sync_offset, ppr_options,
|
|
|
|
|
update_type, /*paused*/FALSE);
|
|
|
|
|
}
|
|
|
|
|
cts->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
#endif
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
|
|
|
|
|
struct ccb_trans_settings *cts)
|
|
|
|
|
{
|
|
|
|
|
#ifdef AHD_NEW_TRAN_SETTINGS
|
|
|
|
|
struct ahd_devinfo devinfo;
|
|
|
|
|
struct ccb_trans_settings_scsi *scsi;
|
|
|
|
|
struct ccb_trans_settings_spi *spi;
|
|
|
|
|
struct ahd_initiator_tinfo *targ_info;
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
struct ahd_transinfo *tinfo;
|
|
|
|
|
|
|
|
|
|
scsi = &cts->proto_specific.scsi;
|
|
|
|
|
spi = &cts->xport_specific.spi;
|
|
|
|
|
ahd_compile_devinfo(&devinfo, our_id,
|
|
|
|
|
cts->ccb_h.target_id,
|
|
|
|
|
cts->ccb_h.target_lun,
|
|
|
|
|
channel, ROLE_UNKNOWN);
|
|
|
|
|
targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
|
|
|
|
|
devinfo.our_scsiid,
|
|
|
|
|
devinfo.target, &tstate);
|
|
|
|
|
|
|
|
|
|
if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
|
|
|
|
|
tinfo = &targ_info->curr;
|
|
|
|
|
else
|
|
|
|
|
tinfo = &targ_info->user;
|
|
|
|
|
|
|
|
|
|
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
|
|
|
|
|
spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
|
|
|
|
|
if (cts->type == CTS_TYPE_USER_SETTINGS) {
|
|
|
|
|
if ((ahd->user_discenable & devinfo.target_mask) != 0)
|
|
|
|
|
spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
|
|
|
|
|
|
|
|
|
|
if ((ahd->user_tagenable & devinfo.target_mask) != 0)
|
|
|
|
|
scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
|
|
|
|
|
} else {
|
|
|
|
|
if ((tstate->discenable & devinfo.target_mask) != 0)
|
|
|
|
|
spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
|
|
|
|
|
|
|
|
|
|
if ((tstate->tagenable & devinfo.target_mask) != 0)
|
|
|
|
|
scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
|
|
|
|
|
}
|
|
|
|
|
cts->protocol_version = tinfo->protocol_version;
|
|
|
|
|
cts->transport_version = tinfo->transport_version;
|
|
|
|
|
|
|
|
|
|
spi->sync_period = tinfo->period;
|
|
|
|
|
spi->sync_offset = tinfo->offset;
|
|
|
|
|
spi->bus_width = tinfo->width;
|
|
|
|
|
spi->ppr_options = tinfo->ppr_options;
|
|
|
|
|
|
|
|
|
|
cts->protocol = PROTO_SCSI;
|
|
|
|
|
cts->transport = XPORT_SPI;
|
|
|
|
|
spi->valid = CTS_SPI_VALID_SYNC_RATE
|
|
|
|
|
| CTS_SPI_VALID_SYNC_OFFSET
|
|
|
|
|
| CTS_SPI_VALID_BUS_WIDTH
|
|
|
|
|
| CTS_SPI_VALID_PPR_OPTIONS;
|
|
|
|
|
|
|
|
|
|
if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
|
|
|
|
|
scsi->valid = CTS_SCSI_VALID_TQ;
|
|
|
|
|
spi->valid |= CTS_SPI_VALID_DISC;
|
|
|
|
|
} else {
|
|
|
|
|
scsi->valid = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
cts->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
#else
|
|
|
|
|
struct ahd_devinfo devinfo;
|
|
|
|
|
struct ahd_initiator_tinfo *targ_info;
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
struct ahd_transinfo *tinfo;
|
|
|
|
|
|
|
|
|
|
ahd_compile_devinfo(&devinfo, our_id,
|
|
|
|
|
cts->ccb_h.target_id,
|
|
|
|
|
cts->ccb_h.target_lun,
|
|
|
|
|
channel, ROLE_UNKNOWN);
|
|
|
|
|
targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
|
|
|
|
|
devinfo.our_scsiid,
|
|
|
|
|
devinfo.target, &tstate);
|
|
|
|
|
|
|
|
|
|
if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
|
|
|
|
|
tinfo = &targ_info->curr;
|
|
|
|
|
else
|
|
|
|
|
tinfo = &targ_info->user;
|
|
|
|
|
|
|
|
|
|
cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
|
|
|
|
|
if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
|
|
|
|
|
if ((ahd->user_discenable & devinfo.target_mask) != 0)
|
|
|
|
|
cts->flags |= CCB_TRANS_DISC_ENB;
|
|
|
|
|
|
|
|
|
|
if ((ahd->user_tagenable & devinfo.target_mask) != 0)
|
|
|
|
|
cts->flags |= CCB_TRANS_TAG_ENB;
|
|
|
|
|
} else {
|
|
|
|
|
if ((tstate->discenable & devinfo.target_mask) != 0)
|
|
|
|
|
cts->flags |= CCB_TRANS_DISC_ENB;
|
|
|
|
|
|
|
|
|
|
if ((tstate->tagenable & devinfo.target_mask) != 0)
|
|
|
|
|
cts->flags |= CCB_TRANS_TAG_ENB;
|
|
|
|
|
}
|
|
|
|
|
cts->sync_period = tinfo->period;
|
|
|
|
|
cts->sync_offset = tinfo->offset;
|
|
|
|
|
cts->bus_width = tinfo->width;
|
|
|
|
|
|
|
|
|
|
cts->valid = CCB_TRANS_SYNC_RATE_VALID
|
|
|
|
|
| CCB_TRANS_SYNC_OFFSET_VALID
|
|
|
|
|
| CCB_TRANS_BUS_WIDTH_VALID;
|
|
|
|
|
|
|
|
|
|
if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
|
|
|
|
|
cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
|
|
|
|
|
|
|
|
|
|
cts->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
#endif
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
|
|
|
|
|
{
|
|
|
|
|
struct ahd_softc *ahd;
|
|
|
|
|
struct cam_sim *sim;
|
|
|
|
|
|
|
|
|
|
sim = (struct cam_sim *)callback_arg;
|
|
|
|
|
ahd = (struct ahd_softc *)cam_sim_softc(sim);
|
|
|
|
|
switch (code) {
|
|
|
|
|
case AC_LOST_DEVICE:
|
|
|
|
|
{
|
|
|
|
|
struct ahd_devinfo devinfo;
|
|
|
|
|
long s;
|
|
|
|
|
|
|
|
|
|
ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
|
|
|
|
|
xpt_path_target_id(path),
|
|
|
|
|
xpt_path_lun_id(path),
|
|
|
|
|
SIM_CHANNEL(ahd, sim),
|
|
|
|
|
ROLE_UNKNOWN);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Revert to async/narrow transfers
|
|
|
|
|
* for the next device.
|
|
|
|
|
*/
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
|
|
|
|
|
AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
|
|
|
|
|
ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
|
|
|
|
|
/*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
|
|
|
|
|
/*paused*/FALSE);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
|
|
|
|
|
int error)
|
|
|
|
|
{
|
|
|
|
|
struct scb *scb;
|
|
|
|
|
union ccb *ccb;
|
|
|
|
|
struct ahd_softc *ahd;
|
|
|
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
u_int mask;
|
|
|
|
|
u_long s;
|
|
|
|
|
|
|
|
|
|
scb = (struct scb *)arg;
|
|
|
|
|
ccb = scb->io_ctx;
|
|
|
|
|
ahd = scb->ahd_softc;
|
|
|
|
|
|
|
|
|
|
if (error != 0) {
|
|
|
|
|
if (error == EFBIG)
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
|
2002-06-05 19:52:45 +00:00
|
|
|
else
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
|
2002-06-05 19:52:45 +00:00
|
|
|
if (nsegments != 0)
|
|
|
|
|
bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
scb->sg_count = 0;
|
|
|
|
|
if (nsegments != 0) {
|
|
|
|
|
void *sg;
|
2003-05-27 04:59:59 +00:00
|
|
|
bus_dmasync_op_t op;
|
2002-06-05 19:52:45 +00:00
|
|
|
u_int i;
|
|
|
|
|
|
|
|
|
|
/* Copy the segments into our SG list */
|
|
|
|
|
for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
|
|
|
|
|
|
|
|
|
|
sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
|
|
|
|
|
dm_segs->ds_len,
|
|
|
|
|
/*last*/i == 1);
|
|
|
|
|
dm_segs++;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
|
|
|
|
|
op = BUS_DMASYNC_PREREAD;
|
|
|
|
|
else
|
|
|
|
|
op = BUS_DMASYNC_PREWRITE;
|
|
|
|
|
|
|
|
|
|
bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
|
|
|
|
|
|
|
|
|
|
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
|
|
|
|
|
struct target_data *tdata;
|
|
|
|
|
|
|
|
|
|
tdata = &scb->hscb->shared_data.tdata;
|
|
|
|
|
tdata->target_phases |= DPHASE_PENDING;
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
|
|
|
|
|
tdata->data_phase = P_DATAOUT;
|
|
|
|
|
else
|
|
|
|
|
tdata->data_phase = P_DATAIN;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Last time we need to check if this SCB needs to
|
|
|
|
|
* be aborted.
|
|
|
|
|
*/
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
|
2002-06-05 19:52:45 +00:00
|
|
|
if (nsegments != 0)
|
|
|
|
|
bus_dmamap_unload(ahd->buffer_dmat,
|
|
|
|
|
scb->dmamap);
|
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
|
|
|
|
|
SCSIID_OUR_ID(scb->hscb->scsiid),
|
|
|
|
|
SCSIID_TARGET(ahd, scb->hscb->scsiid),
|
|
|
|
|
&tstate);
|
|
|
|
|
|
|
|
|
|
mask = SCB_GET_TARGET_MASK(ahd, scb);
|
|
|
|
|
|
|
|
|
|
if ((tstate->discenable & mask) != 0
|
|
|
|
|
&& (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
|
|
|
|
|
scb->hscb->control |= DISCENB;
|
|
|
|
|
|
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
|
|
|
if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
|
2002-06-05 19:52:45 +00:00
|
|
|
scb->flags |= SCB_PACKETIZED;
|
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
|
|
|
if (scb->hscb->task_management != 0)
|
|
|
|
|
scb->hscb->control &= ~MK_MESSAGE;
|
|
|
|
|
}
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
|
|
|
|
|
&& (tinfo->goal.width != 0
|
|
|
|
|
|| tinfo->goal.period != 0
|
|
|
|
|
|| tinfo->goal.ppr_options != 0)) {
|
|
|
|
|
scb->flags |= SCB_NEGOTIATE;
|
|
|
|
|
scb->hscb->control |= MK_MESSAGE;
|
|
|
|
|
} else if ((tstate->auto_negotiate & mask) != 0) {
|
|
|
|
|
scb->flags |= SCB_AUTO_NEGOTIATE;
|
|
|
|
|
scb->hscb->control |= MK_MESSAGE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
|
|
|
|
|
|
|
|
|
|
ccb->ccb_h.status |= CAM_SIM_QUEUED;
|
|
|
|
|
|
2004-08-17 00:14:31 +00:00
|
|
|
aic_scb_timer_start(scb);
|
2002-06-05 19:52:45 +00:00
|
|
|
|
|
|
|
|
if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
|
|
|
|
|
/* Define a mapping from our tag to the SCB. */
|
|
|
|
|
ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
|
|
|
|
|
ahd_pause(ahd);
|
|
|
|
|
ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
|
|
|
|
|
ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
|
|
|
|
|
ahd_unpause(ahd);
|
|
|
|
|
} else {
|
|
|
|
|
ahd_queue_scb(ahd, scb);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_poll(struct cam_sim *sim)
|
|
|
|
|
{
|
|
|
|
|
ahd_intr(cam_sim_softc(sim));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
|
|
|
|
|
struct ccb_scsiio *csio, struct scb *scb)
|
|
|
|
|
{
|
|
|
|
|
struct hardware_scb *hscb;
|
|
|
|
|
struct ccb_hdr *ccb_h;
|
|
|
|
|
|
|
|
|
|
hscb = scb->hscb;
|
|
|
|
|
ccb_h = &csio->ccb_h;
|
|
|
|
|
|
|
|
|
|
csio->resid = 0;
|
|
|
|
|
csio->sense_resid = 0;
|
|
|
|
|
if (ccb_h->func_code == XPT_SCSI_IO) {
|
|
|
|
|
hscb->cdb_len = csio->cdb_len;
|
|
|
|
|
if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
|
|
|
|
|
|
|
|
|
|
if (hscb->cdb_len > MAX_CDB_LEN
|
|
|
|
|
&& (ccb_h->flags & CAM_CDB_PHYS) == 0) {
|
|
|
|
|
u_long s;
|
|
|
|
|
|
aic79xx.c:
Clear the LQICRC_NLQ status should it pop up after we have
already handled the SCSIPERR. During some streaming operations
this status can be delayed until the stream ends. Without this
change, the driver would complain about a "Missing case in
ahd_handle_scsiint".
In the LQOBUSFREE handler...
Don't return the LQOMGR back to the idle state until after
we have cleaned up ENSELO and any status related to this
selection. The last thing we need is the LQO manager starting
another select-out before we have updated the execution queue.
It is not clear whether the LQOMGR would, or would not
start a new selection early.
Make sure ENSELO is off prior to clearing SELDO by flushing
device writes.
Move assignment of the next target SCB pointer inside of
an if to make the code clearer. The effect is the same.
Dump card state in both "Unexpected PKT busfree" paths.
In ahd_reset(), set the chip to SCSI mode before reading SXFRCTL1.
That register only exists in the SCSI mode. Also set the mode
explicitly to the SCSI mode after chip reset due to paranoia.
Re-arrange code so that SXFRCTL1 is restored as quickly after the
chip reset as possible.
S/G structurs must be 8byte aligned. Make this official by saying
so in our DMA tag.
Disable CIO bus stretch on MDFFSTAT if SHVALID is about to come
true. This can cause a CIO bus lockup if a PCI or PCI-X error
occurs while the stretch is occurring - the host cannot service
the PCI-X error since the CIO bus is locked out and SHVALID will
never resolve. The stretch was added in the Rev B to simplify the
wait for SHVALID to resolve, but the code to do this in the open
source sequencer is so simple it was never removed.
Consistently use MAX_OFFSET for the user max syncrate set from
non-volatile storage. This ensures that the offset does not
conflict with AH?_OFFSET_UNKNOWN.
Have ahd_pause_and_flushwork set the mode to ensure that it has
access to the registers it checks. Also modify the checking of
intstat so that the check against 0xFF can actually succeed if
the INT_PEND mask is something other than 0xFF. Although there
are no cardbus U320 controllers, this check may be needed to
recover from a hot-plug PCI removal that occurs without informing
the driver.
Fix a typo. sg_prefetch_cnt -> sg_prefetch_align. This fixes
an infinite loop at card initialization if the cacheline size is 0.
aic79xx.h:
Add AHD_EARLY_REQ_BUG bug flag.
Fix spelling errors.
Include the CDB's length just after the CDB pointer in the DMA'ed
CDB case.
Change AH?_OFFSET_UNKNOWN to 0xFF. This is a value that the
curr->offset can never be, unlike '0' which we previously used.
This fixes code that only checks for a non-zero offset to
determine if a sync negotiation is required since it will fire
in the unknown case even if the goal is async.
aic79xx.reg:
Add comments for LQISTAT bits indicating their names in the 7902
data book. We use slightly different and more descriptive names
in the firmware.
Fix spelling errors.
Include the CDB's length just after the CDB pointer in the DMA'ed
CDB case.
aic79xx.seq:
Update comments regarding rundown of the GSFIFO to reflect reality.
Fix spelling errors.
Since we use an 8byte address and 1 byte length, shorten the size
of a block move for the legacy DMA'ed CDB case from 11 to 9 bytes.
Remove code that, assuming the abort pending feature worked, would
set MK_MESSAGE in the SCB's control byte on completion to catch
invalid reselections. Since we don't see interrupts for completed
selections, this status update could occur prior to us noticing the
SELDO. The "select-out" queue logic will get confused by the
MK_MESSAGE bit being set as this is used to catch packatized
connections where we select-out with ATN. Since the abort pending
feature doesn't work on any released controllers yet, this code was
never executed.
Add support for the AHD_EARLY_REQ_BUG. Don't ignore persistent REQ
assertions just because they were asserted within the bus settle delay
window. This allows us to tolerate devices like the GEM318 that
violate the SCSI spec.
Remove unintentional settnig of SG_CACHE_AVAIL. Writing this bit
should have no effect, but who knows...
On the Rev A, we must wait for HDMAENACK before loading additional
segments to avoid clobbering the address of the first segment in
the S/G FIFO. This resolves data-corruption issues with certain
IBM (now Hitachi) and Fujitsu U320 drives.
Rearrange calc_residual to avoid an extra jmp instruction.
On RevA Silicon, if the target returns us to data-out after we
have already trained for data-out, it is possible for us to
transition the free running clock to data-valid before the required
100ns P1 setup time (8 P1 assertions in fast-160 mode). This will
only happen if this L-Q is a continuation of a data transfer for
which we have already prefetched data into our FIFO (LQ/Data
followed by LQ/Data for the same write transaction). This can
cause some target implementations to miss the first few data
transfers on the bus. We detect this situation by noticing that
this is the first data transfer after an LQ (LQIWORKONLQ true),
that the data transfer is a continuation of a transfer already
setup in our FIFO (SAVEPTRS interrupt), and that the transaction
is a write (DIRECTION set in DFCNTRL). The delay is performed by
disabling SCSIEN until we see the first REQ from the target.
Only compile in snapshot savepointers handler for RevA silicon
where it is enabled.
Handle the cfg4icmd packetized interrupt. We just need to load
the address and count, start the DMA, and CLRCHN once the transfer
is complete.
Fix an oversight in the overrun handler for packetized status
operations. We need to wait for either CTXTDONE or an overrun
when checking for an overrun. The previous code did not wait
and thus could decide that no overrun had occurred even though
an overrun will occur on the next data-valid req. Add some
comment to this section for clarity.
Use LAST_SEG_DONE instead of LASTSDONE for testing transfer
completion in the packetized status case. LASTSDONE may come up
more quickly since it only records completion on the SCSI side,
but since LAST_SEG_DONE is used everywhere else (and needs to be),
this is less confusing.
Add a missing invalidation of the longjmp address in the non-pack
handler. This code needs additional review.
aic79xx_inline.h:
Fix spelling error.
aic79xx_osm.c:
Set the cdb length for CDBs dma'ed from host memory.
Add a comment indicating that, should CAM start supporting cdbs
larger than 16bytes, the driver could store the CDB in the status
buffer.
aic79xx_pci.c:
Add a table entry for the 39320A.
Added a missing comma to an error string table.
Fix spelling errors.
2003-02-27 23:23:16 +00:00
|
|
|
/*
|
|
|
|
|
* Should CAM start to support CDB sizes
|
|
|
|
|
* greater than 16 bytes, we could use
|
|
|
|
|
* the sense buffer to store the CDB.
|
|
|
|
|
*/
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
aic_set_transaction_status(scb,
|
2002-06-05 19:52:45 +00:00
|
|
|
CAM_REQ_INVALID);
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
xpt_done((union ccb *)csio);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
|
aic79xx.c:
Clear the LQICRC_NLQ status should it pop up after we have
already handled the SCSIPERR. During some streaming operations
this status can be delayed until the stream ends. Without this
change, the driver would complain about a "Missing case in
ahd_handle_scsiint".
In the LQOBUSFREE handler...
Don't return the LQOMGR back to the idle state until after
we have cleaned up ENSELO and any status related to this
selection. The last thing we need is the LQO manager starting
another select-out before we have updated the execution queue.
It is not clear whether the LQOMGR would, or would not
start a new selection early.
Make sure ENSELO is off prior to clearing SELDO by flushing
device writes.
Move assignment of the next target SCB pointer inside of
an if to make the code clearer. The effect is the same.
Dump card state in both "Unexpected PKT busfree" paths.
In ahd_reset(), set the chip to SCSI mode before reading SXFRCTL1.
That register only exists in the SCSI mode. Also set the mode
explicitly to the SCSI mode after chip reset due to paranoia.
Re-arrange code so that SXFRCTL1 is restored as quickly after the
chip reset as possible.
S/G structurs must be 8byte aligned. Make this official by saying
so in our DMA tag.
Disable CIO bus stretch on MDFFSTAT if SHVALID is about to come
true. This can cause a CIO bus lockup if a PCI or PCI-X error
occurs while the stretch is occurring - the host cannot service
the PCI-X error since the CIO bus is locked out and SHVALID will
never resolve. The stretch was added in the Rev B to simplify the
wait for SHVALID to resolve, but the code to do this in the open
source sequencer is so simple it was never removed.
Consistently use MAX_OFFSET for the user max syncrate set from
non-volatile storage. This ensures that the offset does not
conflict with AH?_OFFSET_UNKNOWN.
Have ahd_pause_and_flushwork set the mode to ensure that it has
access to the registers it checks. Also modify the checking of
intstat so that the check against 0xFF can actually succeed if
the INT_PEND mask is something other than 0xFF. Although there
are no cardbus U320 controllers, this check may be needed to
recover from a hot-plug PCI removal that occurs without informing
the driver.
Fix a typo. sg_prefetch_cnt -> sg_prefetch_align. This fixes
an infinite loop at card initialization if the cacheline size is 0.
aic79xx.h:
Add AHD_EARLY_REQ_BUG bug flag.
Fix spelling errors.
Include the CDB's length just after the CDB pointer in the DMA'ed
CDB case.
Change AH?_OFFSET_UNKNOWN to 0xFF. This is a value that the
curr->offset can never be, unlike '0' which we previously used.
This fixes code that only checks for a non-zero offset to
determine if a sync negotiation is required since it will fire
in the unknown case even if the goal is async.
aic79xx.reg:
Add comments for LQISTAT bits indicating their names in the 7902
data book. We use slightly different and more descriptive names
in the firmware.
Fix spelling errors.
Include the CDB's length just after the CDB pointer in the DMA'ed
CDB case.
aic79xx.seq:
Update comments regarding rundown of the GSFIFO to reflect reality.
Fix spelling errors.
Since we use an 8byte address and 1 byte length, shorten the size
of a block move for the legacy DMA'ed CDB case from 11 to 9 bytes.
Remove code that, assuming the abort pending feature worked, would
set MK_MESSAGE in the SCB's control byte on completion to catch
invalid reselections. Since we don't see interrupts for completed
selections, this status update could occur prior to us noticing the
SELDO. The "select-out" queue logic will get confused by the
MK_MESSAGE bit being set as this is used to catch packatized
connections where we select-out with ATN. Since the abort pending
feature doesn't work on any released controllers yet, this code was
never executed.
Add support for the AHD_EARLY_REQ_BUG. Don't ignore persistent REQ
assertions just because they were asserted within the bus settle delay
window. This allows us to tolerate devices like the GEM318 that
violate the SCSI spec.
Remove unintentional settnig of SG_CACHE_AVAIL. Writing this bit
should have no effect, but who knows...
On the Rev A, we must wait for HDMAENACK before loading additional
segments to avoid clobbering the address of the first segment in
the S/G FIFO. This resolves data-corruption issues with certain
IBM (now Hitachi) and Fujitsu U320 drives.
Rearrange calc_residual to avoid an extra jmp instruction.
On RevA Silicon, if the target returns us to data-out after we
have already trained for data-out, it is possible for us to
transition the free running clock to data-valid before the required
100ns P1 setup time (8 P1 assertions in fast-160 mode). This will
only happen if this L-Q is a continuation of a data transfer for
which we have already prefetched data into our FIFO (LQ/Data
followed by LQ/Data for the same write transaction). This can
cause some target implementations to miss the first few data
transfers on the bus. We detect this situation by noticing that
this is the first data transfer after an LQ (LQIWORKONLQ true),
that the data transfer is a continuation of a transfer already
setup in our FIFO (SAVEPTRS interrupt), and that the transaction
is a write (DIRECTION set in DFCNTRL). The delay is performed by
disabling SCSIEN until we see the first REQ from the target.
Only compile in snapshot savepointers handler for RevA silicon
where it is enabled.
Handle the cfg4icmd packetized interrupt. We just need to load
the address and count, start the DMA, and CLRCHN once the transfer
is complete.
Fix an oversight in the overrun handler for packetized status
operations. We need to wait for either CTXTDONE or an overrun
when checking for an overrun. The previous code did not wait
and thus could decide that no overrun had occurred even though
an overrun will occur on the next data-valid req. Add some
comment to this section for clarity.
Use LAST_SEG_DONE instead of LASTSDONE for testing transfer
completion in the packetized status case. LASTSDONE may come up
more quickly since it only records completion on the SCSI side,
but since LAST_SEG_DONE is used everywhere else (and needs to be),
this is less confusing.
Add a missing invalidation of the longjmp address in the non-pack
handler. This code needs additional review.
aic79xx_inline.h:
Fix spelling error.
aic79xx_osm.c:
Set the cdb length for CDBs dma'ed from host memory.
Add a comment indicating that, should CAM start supporting cdbs
larger than 16bytes, the driver could store the CDB in the status
buffer.
aic79xx_pci.c:
Add a table entry for the 39320A.
Added a missing comma to an error string table.
Fix spelling errors.
2003-02-27 23:23:16 +00:00
|
|
|
hscb->shared_data.idata.cdb_from_host.cdbptr =
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
|
aic79xx.c:
Clear the LQICRC_NLQ status should it pop up after we have
already handled the SCSIPERR. During some streaming operations
this status can be delayed until the stream ends. Without this
change, the driver would complain about a "Missing case in
ahd_handle_scsiint".
In the LQOBUSFREE handler...
Don't return the LQOMGR back to the idle state until after
we have cleaned up ENSELO and any status related to this
selection. The last thing we need is the LQO manager starting
another select-out before we have updated the execution queue.
It is not clear whether the LQOMGR would, or would not
start a new selection early.
Make sure ENSELO is off prior to clearing SELDO by flushing
device writes.
Move assignment of the next target SCB pointer inside of
an if to make the code clearer. The effect is the same.
Dump card state in both "Unexpected PKT busfree" paths.
In ahd_reset(), set the chip to SCSI mode before reading SXFRCTL1.
That register only exists in the SCSI mode. Also set the mode
explicitly to the SCSI mode after chip reset due to paranoia.
Re-arrange code so that SXFRCTL1 is restored as quickly after the
chip reset as possible.
S/G structurs must be 8byte aligned. Make this official by saying
so in our DMA tag.
Disable CIO bus stretch on MDFFSTAT if SHVALID is about to come
true. This can cause a CIO bus lockup if a PCI or PCI-X error
occurs while the stretch is occurring - the host cannot service
the PCI-X error since the CIO bus is locked out and SHVALID will
never resolve. The stretch was added in the Rev B to simplify the
wait for SHVALID to resolve, but the code to do this in the open
source sequencer is so simple it was never removed.
Consistently use MAX_OFFSET for the user max syncrate set from
non-volatile storage. This ensures that the offset does not
conflict with AH?_OFFSET_UNKNOWN.
Have ahd_pause_and_flushwork set the mode to ensure that it has
access to the registers it checks. Also modify the checking of
intstat so that the check against 0xFF can actually succeed if
the INT_PEND mask is something other than 0xFF. Although there
are no cardbus U320 controllers, this check may be needed to
recover from a hot-plug PCI removal that occurs without informing
the driver.
Fix a typo. sg_prefetch_cnt -> sg_prefetch_align. This fixes
an infinite loop at card initialization if the cacheline size is 0.
aic79xx.h:
Add AHD_EARLY_REQ_BUG bug flag.
Fix spelling errors.
Include the CDB's length just after the CDB pointer in the DMA'ed
CDB case.
Change AH?_OFFSET_UNKNOWN to 0xFF. This is a value that the
curr->offset can never be, unlike '0' which we previously used.
This fixes code that only checks for a non-zero offset to
determine if a sync negotiation is required since it will fire
in the unknown case even if the goal is async.
aic79xx.reg:
Add comments for LQISTAT bits indicating their names in the 7902
data book. We use slightly different and more descriptive names
in the firmware.
Fix spelling errors.
Include the CDB's length just after the CDB pointer in the DMA'ed
CDB case.
aic79xx.seq:
Update comments regarding rundown of the GSFIFO to reflect reality.
Fix spelling errors.
Since we use an 8byte address and 1 byte length, shorten the size
of a block move for the legacy DMA'ed CDB case from 11 to 9 bytes.
Remove code that, assuming the abort pending feature worked, would
set MK_MESSAGE in the SCB's control byte on completion to catch
invalid reselections. Since we don't see interrupts for completed
selections, this status update could occur prior to us noticing the
SELDO. The "select-out" queue logic will get confused by the
MK_MESSAGE bit being set as this is used to catch packatized
connections where we select-out with ATN. Since the abort pending
feature doesn't work on any released controllers yet, this code was
never executed.
Add support for the AHD_EARLY_REQ_BUG. Don't ignore persistent REQ
assertions just because they were asserted within the bus settle delay
window. This allows us to tolerate devices like the GEM318 that
violate the SCSI spec.
Remove unintentional settnig of SG_CACHE_AVAIL. Writing this bit
should have no effect, but who knows...
On the Rev A, we must wait for HDMAENACK before loading additional
segments to avoid clobbering the address of the first segment in
the S/G FIFO. This resolves data-corruption issues with certain
IBM (now Hitachi) and Fujitsu U320 drives.
Rearrange calc_residual to avoid an extra jmp instruction.
On RevA Silicon, if the target returns us to data-out after we
have already trained for data-out, it is possible for us to
transition the free running clock to data-valid before the required
100ns P1 setup time (8 P1 assertions in fast-160 mode). This will
only happen if this L-Q is a continuation of a data transfer for
which we have already prefetched data into our FIFO (LQ/Data
followed by LQ/Data for the same write transaction). This can
cause some target implementations to miss the first few data
transfers on the bus. We detect this situation by noticing that
this is the first data transfer after an LQ (LQIWORKONLQ true),
that the data transfer is a continuation of a transfer already
setup in our FIFO (SAVEPTRS interrupt), and that the transaction
is a write (DIRECTION set in DFCNTRL). The delay is performed by
disabling SCSIEN until we see the first REQ from the target.
Only compile in snapshot savepointers handler for RevA silicon
where it is enabled.
Handle the cfg4icmd packetized interrupt. We just need to load
the address and count, start the DMA, and CLRCHN once the transfer
is complete.
Fix an oversight in the overrun handler for packetized status
operations. We need to wait for either CTXTDONE or an overrun
when checking for an overrun. The previous code did not wait
and thus could decide that no overrun had occurred even though
an overrun will occur on the next data-valid req. Add some
comment to this section for clarity.
Use LAST_SEG_DONE instead of LASTSDONE for testing transfer
completion in the packetized status case. LASTSDONE may come up
more quickly since it only records completion on the SCSI side,
but since LAST_SEG_DONE is used everywhere else (and needs to be),
this is less confusing.
Add a missing invalidation of the longjmp address in the non-pack
handler. This code needs additional review.
aic79xx_inline.h:
Fix spelling error.
aic79xx_osm.c:
Set the cdb length for CDBs dma'ed from host memory.
Add a comment indicating that, should CAM start supporting cdbs
larger than 16bytes, the driver could store the CDB in the status
buffer.
aic79xx_pci.c:
Add a table entry for the 39320A.
Added a missing comma to an error string table.
Fix spelling errors.
2003-02-27 23:23:16 +00:00
|
|
|
hscb->shared_data.idata.cdb_from_host.cdblen =
|
|
|
|
|
csio->cdb_len;
|
|
|
|
|
hscb->cdb_len |= SCB_CDB_LEN_PTR;
|
2002-06-05 19:52:45 +00:00
|
|
|
} else {
|
|
|
|
|
memcpy(hscb->shared_data.idata.cdb,
|
|
|
|
|
csio->cdb_io.cdb_ptr,
|
|
|
|
|
hscb->cdb_len);
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
if (hscb->cdb_len > MAX_CDB_LEN) {
|
|
|
|
|
u_long s;
|
|
|
|
|
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
aic_set_transaction_status(scb,
|
2002-06-05 19:52:45 +00:00
|
|
|
CAM_REQ_INVALID);
|
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
xpt_done((union ccb *)csio);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
memcpy(hscb->shared_data.idata.cdb,
|
|
|
|
|
csio->cdb_io.cdb_bytes, hscb->cdb_len);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Only use S/G if there is a transfer */
|
|
|
|
|
if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
|
|
|
|
|
if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
|
|
|
|
|
/* We've been given a pointer to a single buffer */
|
|
|
|
|
if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
|
|
|
|
|
int s;
|
|
|
|
|
int error;
|
|
|
|
|
|
|
|
|
|
s = splsoftvm();
|
|
|
|
|
error = bus_dmamap_load(ahd->buffer_dmat,
|
|
|
|
|
scb->dmamap,
|
|
|
|
|
csio->data_ptr,
|
|
|
|
|
csio->dxfer_len,
|
|
|
|
|
ahd_execute_scb,
|
|
|
|
|
scb, /*flags*/0);
|
|
|
|
|
if (error == EINPROGRESS) {
|
|
|
|
|
/*
|
|
|
|
|
* So as to maintain ordering,
|
|
|
|
|
* freeze the controller queue
|
|
|
|
|
* until our mapping is
|
|
|
|
|
* returned.
|
|
|
|
|
*/
|
|
|
|
|
xpt_freeze_simq(sim,
|
|
|
|
|
/*count*/1);
|
|
|
|
|
scb->io_ctx->ccb_h.status |=
|
|
|
|
|
CAM_RELEASE_SIMQ;
|
|
|
|
|
}
|
|
|
|
|
splx(s);
|
|
|
|
|
} else {
|
|
|
|
|
struct bus_dma_segment seg;
|
|
|
|
|
|
|
|
|
|
/* Pointer to physical buffer */
|
|
|
|
|
if (csio->dxfer_len > AHD_MAXTRANSFER_SIZE)
|
|
|
|
|
panic("ahd_setup_data - Transfer size "
|
|
|
|
|
"larger than can device max");
|
|
|
|
|
|
2003-04-09 14:58:02 +00:00
|
|
|
seg.ds_addr =
|
|
|
|
|
(bus_addr_t)(vm_offset_t)csio->data_ptr;
|
2002-06-05 19:52:45 +00:00
|
|
|
seg.ds_len = csio->dxfer_len;
|
|
|
|
|
ahd_execute_scb(scb, &seg, 1, 0);
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
struct bus_dma_segment *segs;
|
|
|
|
|
|
|
|
|
|
if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
|
|
|
|
|
panic("ahd_setup_data - Physical segment "
|
|
|
|
|
"pointers unsupported");
|
|
|
|
|
|
|
|
|
|
if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
|
|
|
|
|
panic("ahd_setup_data - Virtual segment "
|
|
|
|
|
"addresses unsupported");
|
|
|
|
|
|
|
|
|
|
/* Just use the segments provided */
|
|
|
|
|
segs = (struct bus_dma_segment *)csio->data_ptr;
|
|
|
|
|
ahd_execute_scb(scb, segs, csio->sglist_cnt, 0);
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
ahd_execute_scb(scb, NULL, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
|
|
|
|
|
{
|
|
|
|
|
union ccb *abort_ccb;
|
|
|
|
|
|
|
|
|
|
abort_ccb = ccb->cab.abort_ccb;
|
|
|
|
|
switch (abort_ccb->ccb_h.func_code) {
|
|
|
|
|
#ifdef AHD_TARGET_MODE
|
|
|
|
|
case XPT_ACCEPT_TARGET_IO:
|
|
|
|
|
case XPT_IMMED_NOTIFY:
|
|
|
|
|
case XPT_CONT_TARGET_IO:
|
|
|
|
|
{
|
|
|
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
|
struct ahd_tmode_lstate *lstate;
|
|
|
|
|
struct ccb_hdr_slist *list;
|
|
|
|
|
cam_status status;
|
|
|
|
|
|
|
|
|
|
status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
|
|
|
|
|
&lstate, TRUE);
|
|
|
|
|
|
|
|
|
|
if (status != CAM_REQ_CMP) {
|
|
|
|
|
ccb->ccb_h.status = status;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
|
|
|
|
|
list = &lstate->accept_tios;
|
|
|
|
|
else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
|
|
|
|
|
list = &lstate->immed_notifies;
|
|
|
|
|
else
|
|
|
|
|
list = NULL;
|
|
|
|
|
|
|
|
|
|
if (list != NULL) {
|
|
|
|
|
struct ccb_hdr *curelm;
|
|
|
|
|
int found;
|
|
|
|
|
|
|
|
|
|
curelm = SLIST_FIRST(list);
|
|
|
|
|
found = 0;
|
|
|
|
|
if (curelm == &abort_ccb->ccb_h) {
|
|
|
|
|
found = 1;
|
|
|
|
|
SLIST_REMOVE_HEAD(list, sim_links.sle);
|
|
|
|
|
} else {
|
|
|
|
|
while(curelm != NULL) {
|
|
|
|
|
struct ccb_hdr *nextelm;
|
|
|
|
|
|
|
|
|
|
nextelm =
|
|
|
|
|
SLIST_NEXT(curelm, sim_links.sle);
|
|
|
|
|
|
|
|
|
|
if (nextelm == &abort_ccb->ccb_h) {
|
|
|
|
|
found = 1;
|
|
|
|
|
SLIST_NEXT(curelm,
|
|
|
|
|
sim_links.sle) =
|
|
|
|
|
SLIST_NEXT(nextelm,
|
|
|
|
|
sim_links.sle);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
curelm = nextelm;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (found) {
|
|
|
|
|
abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
|
|
|
|
|
xpt_done(abort_ccb);
|
|
|
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
|
|
|
} else {
|
|
|
|
|
xpt_print_path(abort_ccb->ccb_h.path);
|
|
|
|
|
printf("Not found\n");
|
|
|
|
|
ccb->ccb_h.status = CAM_PATH_INVALID;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
case XPT_SCSI_IO:
|
|
|
|
|
/* XXX Fully implement the hard ones */
|
|
|
|
|
ccb->ccb_h.status = CAM_UA_ABORT;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
xpt_done(ccb);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
|
|
|
|
|
u_int lun, ac_code code, void *opt_arg)
|
|
|
|
|
{
|
|
|
|
|
struct ccb_trans_settings cts;
|
|
|
|
|
struct cam_path *path;
|
|
|
|
|
void *arg;
|
|
|
|
|
int error;
|
|
|
|
|
|
|
|
|
|
arg = NULL;
|
|
|
|
|
error = ahd_create_path(ahd, channel, target, lun, &path);
|
|
|
|
|
|
|
|
|
|
if (error != CAM_REQ_CMP)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
switch (code) {
|
|
|
|
|
case AC_TRANSFER_NEG:
|
|
|
|
|
{
|
|
|
|
|
#ifdef AHD_NEW_TRAN_SETTINGS
|
|
|
|
|
struct ccb_trans_settings_scsi *scsi;
|
|
|
|
|
|
|
|
|
|
cts.type = CTS_TYPE_CURRENT_SETTINGS;
|
|
|
|
|
scsi = &cts.proto_specific.scsi;
|
|
|
|
|
#else
|
|
|
|
|
cts.flags = CCB_TRANS_CURRENT_SETTINGS;
|
|
|
|
|
#endif
|
|
|
|
|
cts.ccb_h.path = path;
|
|
|
|
|
cts.ccb_h.target_id = target;
|
|
|
|
|
cts.ccb_h.target_lun = lun;
|
|
|
|
|
ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
|
|
|
|
|
arg = &cts;
|
|
|
|
|
#ifdef AHD_NEW_TRAN_SETTINGS
|
|
|
|
|
scsi->valid &= ~CTS_SCSI_VALID_TQ;
|
|
|
|
|
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
|
|
|
|
|
#else
|
|
|
|
|
cts.valid &= ~CCB_TRANS_TQ_VALID;
|
|
|
|
|
cts.flags &= ~CCB_TRANS_TAG_ENB;
|
|
|
|
|
#endif
|
|
|
|
|
if (opt_arg == NULL)
|
|
|
|
|
break;
|
|
|
|
|
if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
|
|
|
|
|
#ifdef AHD_NEW_TRAN_SETTINGS
|
|
|
|
|
scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
|
|
|
|
|
scsi->valid |= CTS_SCSI_VALID_TQ;
|
|
|
|
|
#else
|
|
|
|
|
cts.flags |= CCB_TRANS_TAG_ENB;
|
|
|
|
|
cts.valid |= CCB_TRANS_TQ_VALID;
|
|
|
|
|
#endif
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case AC_SENT_BDR:
|
|
|
|
|
case AC_BUS_RESET:
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
panic("ahd_send_async: Unexpected async event");
|
|
|
|
|
}
|
|
|
|
|
xpt_async(code, path, arg);
|
|
|
|
|
xpt_free_path(path);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
ahd_platform_set_tags(struct ahd_softc *ahd,
|
|
|
|
|
struct ahd_devinfo *devinfo, int enable)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
|
|
|
|
|
{
|
|
|
|
|
ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF,
|
|
|
|
|
M_NOWAIT | M_ZERO);
|
|
|
|
|
if (ahd->platform_data == NULL)
|
|
|
|
|
return (ENOMEM);
|
|
|
|
|
return (0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
ahd_platform_free(struct ahd_softc *ahd)
|
|
|
|
|
{
|
|
|
|
|
struct ahd_platform_data *pdata;
|
|
|
|
|
|
|
|
|
|
pdata = ahd->platform_data;
|
|
|
|
|
if (pdata != NULL) {
|
|
|
|
|
if (pdata->regs[0] != NULL)
|
|
|
|
|
bus_release_resource(ahd->dev_softc,
|
|
|
|
|
pdata->regs_res_type[0],
|
|
|
|
|
pdata->regs_res_id[0],
|
|
|
|
|
pdata->regs[0]);
|
|
|
|
|
|
|
|
|
|
if (pdata->regs[1] != NULL)
|
|
|
|
|
bus_release_resource(ahd->dev_softc,
|
|
|
|
|
pdata->regs_res_type[1],
|
|
|
|
|
pdata->regs_res_id[1],
|
|
|
|
|
pdata->regs[1]);
|
|
|
|
|
|
|
|
|
|
if (pdata->irq != NULL)
|
|
|
|
|
bus_release_resource(ahd->dev_softc,
|
|
|
|
|
pdata->irq_res_type,
|
|
|
|
|
0, pdata->irq);
|
|
|
|
|
|
|
|
|
|
if (pdata->sim != NULL) {
|
|
|
|
|
xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
|
|
|
|
|
xpt_free_path(pdata->path);
|
|
|
|
|
xpt_bus_deregister(cam_sim_path(pdata->sim));
|
|
|
|
|
cam_sim_free(pdata->sim, /*free_devq*/TRUE);
|
|
|
|
|
}
|
|
|
|
|
if (pdata->eh != NULL)
|
|
|
|
|
EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
|
|
|
|
|
free(ahd->platform_data, M_DEVBUF);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
|
|
|
|
|
{
|
|
|
|
|
/* We don't sort softcs under FreeBSD so report equal always */
|
|
|
|
|
return (0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
ahd_detach(device_t dev)
|
|
|
|
|
{
|
|
|
|
|
struct ahd_softc *ahd;
|
|
|
|
|
u_long l;
|
|
|
|
|
u_long s;
|
|
|
|
|
|
|
|
|
|
ahd_list_lock(&l);
|
|
|
|
|
device_printf(dev, "detaching device\n");
|
|
|
|
|
ahd = device_get_softc(dev);
|
|
|
|
|
ahd = ahd_find_softc(ahd);
|
|
|
|
|
if (ahd == NULL) {
|
|
|
|
|
device_printf(dev, "aic7xxx already detached\n");
|
|
|
|
|
ahd_list_unlock(&l);
|
|
|
|
|
return (ENOENT);
|
|
|
|
|
}
|
ahc_eisa.c:
ahc_pci.c:
ahd_pci.c:
aic7xxx.c:
aic79xx.c:
aic_osm_lib.c:
aic_osm_lib.h:
Use common OSM routines from aic_osm_lib for bus dma operations,
delay routines, accessing CCBs, byte swapping, etc.
aic7xxx_pci.c:
Provide a better description for the 2915/30LP on attach.
aic7xxx.c:
aic79xx.c:
aic7770.c:
aic79xx_pci.c:
aic7xxx_pci.c:
aic7xxx_93cx6.c:
Move FBSDID behind an ifdef so that these core files will
still compile under other OSes.
aic79xx.h:
aic79xx_pci.c:
aic79xx.seq:
To speed up non-packetized CDB delivery in Rev B, all CDB
acks are "released" to the output sync as soon as the
command phase starts. There is only one problem with this
approach. If the target changes phase before all data are
sent, we have left over acks that can go out on the bus in
a data phase. Due to other chip contraints, this only
happens if the target goes to data-in, but if the acks go
out before we can test SDONE, we'll think that the transfer
has completed successfully. Work around this by taking
advantage of the 400ns or 800ns dead time between command
phase and the REQ of the new phase. If the transfer has
completed successfully, SCSIEN should fall *long* before we
see a phase change. We thus treat any phasemiss that
occurs before SCSIEN falls as an incomplete transfer.
aic79xx.h:
Add the AHD_FAST_CDB_DELIVERY feature.
aic79xx_pci.c:
Set AHD_FAST_CDB_DELIVERY for all Rev. B parts.
aic79xx.seq:
Test for PHASEMIS in the command phase for
all AHD_FAST_CDB_DELIVERY controlelrs.
ahd_pci.c:
ahc_pci.c:
aic7xxx.h:
aic79xx.h:
Move definition of controller BAR offsets to core header files.
aic7xxx.c:
aic79xx.c:
In the softc free routine, leave removal of a softc from the
global list of softcs to the OSM (the caller of this routine).
This allows us to avoid holding the softc list_lock during device
destruction where we may have to sleep waiting for our recovery
thread to halt.
ahc_pci.c:
Use ahc_pci_test_register access to validate I/O mapped in
addition to the tests already performed for memory mapped
access.
Remove unused ahc_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
ahd_pci.c:
Remove reduntant definition of controller BAR offsets. These
are also defined in aic79xx.h.
Remove unused ahd_power_state_change() function. The PCI
layer in both 4.X and 5.X now offer this functionality.
aic7xxx.c:
aic79xx.c:
aic79xx.h:
aic7xxx.h:
aic7xxx_osm.c:
aic79xx_osm.c:
Move timeout handling to the driver cores. In the case
of the aic79xx driver, the algorithm has been enhanced
to try target resets before performing a bus reset. For
the aic7xxx driver, the algorithm is unchanged. Although
the drivers do not currently sleep during recovery (recovery
is timeout driven), the cores do expect all processing to
be performed via a recovery thread. Our timeout handlers
are now little stubs that wakeup the recovery thread.
aic79xx.c:
aic79xx.h:
aic79xx_inline.h:
Change shared_data allocation to use a map_node so
that the sentinel hscb can use this map node in
ahd_swap_with_next_hscb. This routine now swaps
the hscb_map pointer in additon to the hscb
contents so that any sync operations occur on
the correct map.
physaddr -> busaddr
Pointed out by: Jason Thorpe <thorpej@wasabisystems.com>
aic79xx.c:
Make more use of the in/out/w/l/q macros for accessing
byte registers in the chip.
Correct some issues in the ahd_flush_qoutfifo() routine.
o Run the qoutfifo only once the command channel
DMA engine has been halted. This closes a window
where we might have missed some entries.
o Change ahd_run_data_fifo() to not loop to completion.
If we happen to start on the wrong FIFO and the other
FIFO has a snapshot savepointers, we might deadlock.
This required our delay between FIFO tests to be
moved to the ahd_flush_qoutfifo() routine.
o Update/add comments.
o Remove spurious test for COMPLETE_DMA list being empty
when completing transactions from the GSFIFO with
residuals. The SCB must be put on the COMPLETE_DMA
scb list unconditionally.
o When halting command channel DMA activity, we must
disable the DMA channel in all cases but an update
of the QOUTFIFO. The latter case is required so
that the sequencer will update its position in the
QOUTFIFO. Previously, we left the channel enabled
for all "push" DMAs. This left us vulnerable to
the sequencer handling an SCB push long after that
SCB was already processed manually by this routine.
o Correct the polarity of tests involving
ahd_scb_active_in_fifo(). This routine returns
non-zero for true.
Return to processing bad status completions through
the qoutfifo. This reduces the time that the sequencer
is kept paused when handling transactions with bad
status or underruns.
When waiting for the controller to quiece selections,
add a delay to our loop. Otherwise we may fail to wait
long enough for the sequencer to comply.
On H2A4 hardware, use the slow slewrate for non-paced
transfers. This mirrors what the Adaptec Windows
drivers do.
On the Rev B. only slow down the CRC timing for
older U160 devices that might need the slower timing.
We define "older" as devices that do not support
packetized protocol.
Wait up to 5000 * 5us for the SEEPROM to become unbusy.
Write ops seem to take much longer than read ops.
aic79xx.seq:
For controllers with the FAINT_LED bug, turn the diagnostic
led feature on during selection and reselection. This covers
the non-packetized case. The LED will be disabled for
non-packetized transfers once we return to the top level idle
loop. Add more comments about the busy LED workaround.
Extend a critical section around the entire
command channel idle loop process. Previously
the portion of this handler that directly manipulated
the linked list of completed SCBs was not protected.
This is the likely cause of the recent reports of
commands being completed twice by the driver.
Extend critical sections across the test for,
and the longjump to, longjump routines. This
prevents the firmware from trying to jump to
a longjmp handler that was just cleared by the
host.
Improve the locations of several critical section
begin and end points. Typically these changes
remove instructions that did not need to be
inside a critical section.
Close the "busfree after selection, but before busfree
interrupts can be enabled" race to just a single sequencer
instruction. We now test the BSY line explicitly before
clearing the busfree status and enabling the busfree
interrupt.
Close a race condition in the processing of HS_MAILBOX
updates. We now clear the "updated" status before the
copy. This ensures that we don't accidentally clear
the status incorrectly when the host sneaks in an update
just after our last copy, but before we clear the status.
This race has never been observed.
Don't re-enable SCSIEN if we lose the race to disable SCSIEN
in our interrupt handler's workaround for the RevA data-valid
too early issue.
aic79xx_inline.h:
Add comments indicating that the order in which bytes are
read or written in ahd_inw and ahd_outw is important. This
allows us to use these inlines when accessing registers with
side-effects.
aic79xx_pci.c:
The 29320 and the 29320B are 7902 not 7901 based products.
Correct the driver banner.
aic7xxx.h:
Enable the use of the auto-access pause feature
on the aic7870 and aic7880. It was disabled due
to an oversight.
aic7xxx.reg:
Move TARG_IMMEDIATE_SCB to alias LAST_MSG to
avoid leaving garbage in MWI_RESIDUAL. This
prevents spurious overflows whn operating target
mode on controllers that require the MWI_RESIDUAL
work-around.
aic7xxx.seq:
AHC_TMODE_WIDEODD_BUG is a bug, not a softc flag.
Reference the correct softc field when testing
for its presence.
Set the NOT_IDENTIFIED and NO_CDB_SENT bits
in SEQ_FLAGS to indicate that the nexus is
invalid in await busfree.
aic7xxx_93cx6.c:
Add support for the C56/C66 versions of the EWEN and EWDS
commands.
aic7xxx.c:
aic7xxx_pci.c:
Move test for the validity of left over BIOS data
to ahc_test_register_access(). This guarantees that
any left over CHIPRST value is not clobbered by our
register access test and lost to the test that was
in ahc_reset.
2003-12-17 00:02:10 +00:00
|
|
|
TAILQ_REMOVE(&ahd_tailq, ahd, links);
|
|
|
|
|
ahd_list_unlock(&l);
|
2002-06-05 19:52:45 +00:00
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
|
ahd_intr_enable(ahd, FALSE);
|
|
|
|
|
bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
|
|
|
|
|
ahd_unlock(ahd, &s);
|
|
|
|
|
ahd_free(ahd);
|
|
|
|
|
return (0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#if UNUSED
|
|
|
|
|
static void
|
|
|
|
|
ahd_dump_targcmd(struct target_cmd *cmd)
|
|
|
|
|
{
|
|
|
|
|
uint8_t *byte;
|
|
|
|
|
uint8_t *last_byte;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
byte = &cmd->initiator_channel;
|
|
|
|
|
/* Debugging info for received commands */
|
|
|
|
|
last_byte = &cmd[1].initiator_channel;
|
|
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
|
while (byte < last_byte) {
|
|
|
|
|
if (i == 0)
|
|
|
|
|
printf("\t");
|
|
|
|
|
printf("%#x", *byte++);
|
|
|
|
|
i++;
|
|
|
|
|
if (i == 8) {
|
|
|
|
|
printf("\n");
|
|
|
|
|
i = 0;
|
|
|
|
|
} else {
|
|
|
|
|
printf(", ");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
ahd_modevent(module_t mod, int type, void *data)
|
|
|
|
|
{
|
|
|
|
|
/* XXX Deal with busy status on unload. */
|
2004-07-15 08:26:07 +00:00
|
|
|
/* XXX Deal with unknown events */
|
2002-06-05 19:52:45 +00:00
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static moduledata_t ahd_mod = {
|
|
|
|
|
"ahd",
|
|
|
|
|
ahd_modevent,
|
|
|
|
|
NULL
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/********************************** DDB Hooks *********************************/
|
|
|
|
|
#ifdef DDB
|
|
|
|
|
static struct ahd_softc *ahd_ddb_softc;
|
|
|
|
|
static int ahd_ddb_paused;
|
|
|
|
|
static int ahd_ddb_paused_on_entry;
|
Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
|
|
|
DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
|
2002-06-05 19:52:45 +00:00
|
|
|
{
|
|
|
|
|
struct ahd_softc *list_ahd;
|
|
|
|
|
|
|
|
|
|
ahd_ddb_softc = NULL;
|
|
|
|
|
TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
|
|
|
|
|
if (list_ahd->unit == addr)
|
|
|
|
|
ahd_ddb_softc = list_ahd;
|
|
|
|
|
}
|
|
|
|
|
if (ahd_ddb_softc == NULL)
|
|
|
|
|
db_error("No matching softc found!\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
DB_COMMAND(ahd_pause, ahd_ddb_pause)
|
|
|
|
|
{
|
|
|
|
|
if (ahd_ddb_softc == NULL) {
|
Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
|
|
|
db_error("Must set unit with ahd_sunit first!\n");
|
2002-06-05 19:52:45 +00:00
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
if (ahd_ddb_paused == 0) {
|
|
|
|
|
ahd_ddb_paused++;
|
|
|
|
|
if (ahd_is_paused(ahd_ddb_softc)) {
|
|
|
|
|
ahd_ddb_paused_on_entry++;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
ahd_pause(ahd_ddb_softc);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
|
|
|
|
|
{
|
|
|
|
|
if (ahd_ddb_softc == NULL) {
|
Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
|
|
|
db_error("Must set unit with ahd_sunit first!\n");
|
2002-06-05 19:52:45 +00:00
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
if (ahd_ddb_paused != 0) {
|
|
|
|
|
ahd_ddb_paused = 0;
|
|
|
|
|
if (ahd_ddb_paused_on_entry)
|
|
|
|
|
return;
|
|
|
|
|
ahd_unpause(ahd_ddb_softc);
|
|
|
|
|
} else if (ahd_ddb_paused_on_entry != 0) {
|
|
|
|
|
/* Two unpauses to clear a paused on entry. */
|
|
|
|
|
ahd_ddb_paused_on_entry = 0;
|
|
|
|
|
ahd_unpause(ahd_ddb_softc);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
DB_COMMAND(ahd_in, ahd_ddb_in)
|
|
|
|
|
{
|
|
|
|
|
int c;
|
|
|
|
|
int size;
|
|
|
|
|
|
|
|
|
|
if (ahd_ddb_softc == NULL) {
|
Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
|
|
|
db_error("Must set unit with ahd_sunit first!\n");
|
2002-06-05 19:52:45 +00:00
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
if (have_addr == 0)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
size = 1;
|
|
|
|
|
while ((c = *modif++) != '\0') {
|
|
|
|
|
switch (c) {
|
|
|
|
|
case 'b':
|
|
|
|
|
size = 1;
|
|
|
|
|
break;
|
|
|
|
|
case 'w':
|
|
|
|
|
size = 2;
|
|
|
|
|
break;
|
|
|
|
|
case 'l':
|
|
|
|
|
size = 4;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (count <= 0)
|
|
|
|
|
count = 1;
|
|
|
|
|
while (--count >= 0) {
|
2002-11-28 04:09:29 +00:00
|
|
|
db_printf("%04lx (M)%x: \t", (u_long)addr,
|
2002-06-05 19:52:45 +00:00
|
|
|
ahd_inb(ahd_ddb_softc, MODE_PTR));
|
|
|
|
|
switch (size) {
|
|
|
|
|
case 1:
|
|
|
|
|
db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
|
|
|
|
|
break;
|
|
|
|
|
case 2:
|
|
|
|
|
db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
|
|
|
|
|
break;
|
|
|
|
|
case 4:
|
|
|
|
|
db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
DB_SET(ahd_out, ahd_ddb_out, db_cmd_set, CS_MORE, NULL)
|
|
|
|
|
{
|
|
|
|
|
db_expr_t old_value;
|
|
|
|
|
db_expr_t new_value;
|
|
|
|
|
int size;
|
|
|
|
|
|
|
|
|
|
if (ahd_ddb_softc == NULL) {
|
Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
|
|
|
db_error("Must set unit with ahd_sunit first!\n");
|
2002-06-05 19:52:45 +00:00
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (modif[0]) {
|
|
|
|
|
case '\0':
|
|
|
|
|
case 'b':
|
|
|
|
|
size = 1;
|
|
|
|
|
break;
|
|
|
|
|
case 'h':
|
|
|
|
|
size = 2;
|
|
|
|
|
break;
|
|
|
|
|
case 'l':
|
|
|
|
|
size = 4;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
db_error("Unknown size\n");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while (db_expression(&new_value)) {
|
|
|
|
|
switch (size) {
|
|
|
|
|
default:
|
|
|
|
|
case 1:
|
|
|
|
|
old_value = ahd_inb(ahd_ddb_softc, addr);
|
|
|
|
|
ahd_outb(ahd_ddb_softc, addr, new_value);
|
|
|
|
|
break;
|
|
|
|
|
case 2:
|
|
|
|
|
old_value = ahd_inw(ahd_ddb_softc, addr);
|
|
|
|
|
ahd_outw(ahd_ddb_softc, addr, new_value);
|
|
|
|
|
break;
|
|
|
|
|
case 4:
|
|
|
|
|
old_value = ahd_inl(ahd_ddb_softc, addr);
|
|
|
|
|
ahd_outl(ahd_ddb_softc, addr, new_value);
|
|
|
|
|
break;
|
|
|
|
|
}
|
2002-11-28 04:09:29 +00:00
|
|
|
db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
|
|
|
|
|
(u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
|
|
|
|
|
(u_long)old_value, (u_long)new_value);
|
2002-06-05 19:52:45 +00:00
|
|
|
addr += size;
|
|
|
|
|
}
|
|
|
|
|
db_skip_to_eol();
|
|
|
|
|
}
|
|
|
|
|
|
Correct a very rare case where command ordering could be compromised
by a transaction performing a driver handled message sequence (an
scb with the MK_MESSAGE flag set).
SCBs that perform host managed messaging must always be
at the head of their per-target selection queue so that
the firmware knows to manually assert ATN if the current
negotiation agreement is packetized. In the past we
guaranteed this by queuing these SCBs separarately in
the execution queue. This exposes the system to potential
command reordering in two cases:
1) Another SCB for the same ITL nexus is queued that does
not have the MK_MESSAGE flag set. This SCB will be
queued to the per-target list which can be serviced
before the MK_MESSAGE scb that preceeded it.
2) If the target cannot accept all of the commands in the
per-target selection queue in one selection, the remainder
is queued to the tail of the selection queues so as to
effect round-robin scheduling. This could allow the
MK_MESSAGE scb to be sent to the target before the
requeued commands.
This commit changes the firmware policy to defer queuing
MK_MESSAGE SCBs into the selection queues until this can
be done without affecting order. This means that the
target's selection queue is either empty, or the last
SCB on the execution queue is also a MK_MESSAGE SCB.
During any wait, the firmware halts the download of new
SCBs so only a single "holding location" is required.
Luckily, MK_MESSAGE SCBs are rare and typically occur only
during CAM's bus probe where only one command is outstanding
at a time. However, during some recovery scenarios, the
reordering *could* occur.
aic79xx.c:
Update ahd_search_qinfifo() and helper routines to
search for pending MK_MESSAGE scbs and properly
restitch the execution queue if either the MK_MESSAGE
SCB is being aborted, or the MK_MESSAGE SCB can be
queued due to the execution queue draining due to
aborts.
Enable LQOBUSFREE status to assert an interrupt.
This should be redundant since a BUSFREE interrupt
should always occur along with an LQOBUSFREE event,
but on the Rev A, this doesn't seem to be guaranteed.
When a PPR request is rejected when a previously
existing packetized agreement is in place, assume
that the target has been reset without our knowledge
and revert to async/narrow transfers. This corrects
two issues: the stale ENATNO setting that was used
to send the PPR is cleared so the firmware is not
confused by a future packetized selection with
ATN asserted but no MK_MESSAGE flag in the SCB and
it speeds up recovery by aborting any pending
packetized transactions that by definition are now
dead.
When re-queueing SCBs after a failed negotiation
attempt, ensure command ordering by freezing the
device queue first.
Traverse the list of pending SCBs rather than the
whole SCB array on the controller when pushing
MK_MESSAGE flag changes out to the controller.
The original code was optimized for the aic7xxx
controllers where there are fewer controller slots
then pending SCBs and the firmware picks SCB
slots. For the U320 controller, the hope is
that we have fewer pending SCBs then the 512
slots on the controller.
Enhance some diagnostics.
Factor out some common code.
aic79xx.h:
Add prototype for new ahd_done_with_status() that is
used to factor out some commone code.
aic79xx.reg:
Add definisions for the pending MK_MESSAGE SCB.
aic79xx.seq:
Defer MK_MESSAGE SCB queing to the execution queue
so as to preserve command ordering. Re-arrange some
of the selection processing code so the above change
had no performance impact on the common code path.
Close a few critical section holes.
When entering a non-packetized phase, manually enable
busfree interrupts, since the controller hardware
does not do this automatically.
aic79xx_inline.h:
Enhance logging for queued SCBs.
aic79xx_osm.c:
Add new a new DDB ahd command, ahd_dump, which
invokes the ahd_dump_card_state() routine on the
unit specified with the ahd_sunit DDB command.
aic79xx_pci.c:
Turn on the BUSFREEREV bug for the Rev B. controller.
This is required to close the busfree during non-packetized
phase hole.
2004-08-04 17:55:34 +00:00
|
|
|
DB_COMMAND(ahd_dump, ahd_ddb_dump)
|
|
|
|
|
{
|
|
|
|
|
if (ahd_ddb_softc == NULL) {
|
|
|
|
|
db_error("Must set unit with ahd_sunit first!\n");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
ahd_dump_card_state(ahd_ddb_softc);
|
|
|
|
|
}
|
|
|
|
|
|
2002-06-05 19:52:45 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
|
|
|
|
|
MODULE_DEPEND(ahd, cam, 1, 1, 1);
|
|
|
|
|
MODULE_VERSION(ahd, 1);
|
