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* Prepare for future integration between CAM and newbus. xpt_bus_registerscottl2007-06-172-3/+4
| | | | | | | now takes a device_t to be the parent of the bus that is being created. Most SIMs have been updated with a reasonable argument, but a few exceptions just pass NULL for now. This argument isn't used yet and the newbus integration likely won't be ready until after 7.0-RELEASE.
* Up until now, the free SCB pool received only a small initial allocation,scottl2007-04-195-18/+24
| | | | | | | | | | | | and new SCBs were allocated on demand later if needed. This has two problems. First, allocating SCBs involves allocating contiguous memory, and if memory is exhausted then the VM will try to page out to satisfy the request, leading to recursion and deadlock. The second problem is that it can cause lock order reversals due to parts of the VM still being under Giant. Fix the problem be allocating the full pool at driver attach, when it is safe to do so.
* Basic MPSAFE locking for the AHC and AHD drivers.scottl2007-04-1713-336/+72
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* Remove Giant from CAM. Drivers (SIMs) now register a mutex that CAM willscottl2007-04-152-3/+4
| | | | | | | | | | | use to synchornize and protect all data objects that are used for that SIM. Drivers that are not yet MPSAFE register Giant and operate as usual. RIght now, no drivers are MPSAFE, though a few will be changed in the coming week as this work settles down. The driver API has changed, so all CAM drivers will need to be recompiled. The userland API has not changed, so tools like camcontrol do not need to be recompiled.
* o break newbus api: add a new argument of type driver_filter_t topiso2007-02-232-2/+2
| | | | | | | | | | | | | bus_setup_intr() o add an int return code to all fast handlers o retire INTR_FAST/IH_FAST For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current Reviewed by: many Approved by: re@
* Correct typos containing my login name (plus one more in expr.y).ceri2007-02-181-1/+1
| | | | Found courtesy of a recursive grep in the wrong directory.
* - Change the PCI-X registers constants to be relative to the PCI-X PCIjhb2007-01-192-7/+17
| | | | | | | | | capability rather than hardcoded offsets for a particular card. While I'm here, expand the constants some. - Change the ahd(4) driver to use pci_find_extcap() to locate the PCI-X capability to keep up with the first change. Reviewed by: scottl, gibbs (earlier version)
* Fix a group of typos:yar2006-12-293-3/+3
| | | | | | | | preceed -> precede, preceeded -> preceded, preceeding -> preceding. Submitted by: Andre Guibert de Bruet <andy@siliconlandmark.com>
* 2nd and final commit that moves us to CAM_NEW_TRAN_CODEmjacob2006-11-024-367/+0
| | | | | | as the default. Reviewed by multitudes.
* Coverity: initialize some variables before potential use.mjacob2006-09-051-0/+2
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* add a newbus method for obtaining the bus's bus_dma_tag_t... This isjmg2006-09-034-8/+8
| | | | | | | | | | | | | required by arches like sparc64 (not yet implemented) and sun4v where there are seperate IOMMU's for each PCI bus... For all other arches, it will end up returning NULL, which makes it a no-op... Convert a few drivers (the ones we've been working w/ on sun4v) to the new convection... Eventually all drivers will need to replace the parent tag of NULL, w/ bus_get_dma_tag(dev), though dev is usually different for each driver, and will require hand inspection... Reviewed by: scottl (earlier version)
* Since DELAY() was moved, most <machine/clock.h> #includes have beenphk2006-05-162-2/+0
| | | | unnecessary.
* Clean up the way we handle auxiliary commands for a given ddb commandjhb2006-03-071-1/+1
| | | | | | | | | | | | | | | | table. Previously, the ddb code knew of each linker set of auxiliary commands and which explicit command list they were tied to. These changes add a simple command_table struct that contains both the static list of commands and the pointers for any auxiliary linker set of additional commands. This also makes it possible for other arbitrary command tables to be defined in other parts of the kernel w/o having to edit ddb itself. The DB_SET macro has also been trimmed down to just creating an entry in a linker set. A new DB_FUNC macro does what the old DB_SET did which is to not only add an entry to the linker set but also to include a function prototype for the function being added. With these changes, it's now also possible to create aliases for ddb functions using DB_SET() directly if desired.
* Fix -Wundef warnings from compiling GENERIC and LINT kernels ofru2005-12-061-1/+1
| | | | all architectures.
* Fix -Wundef warnings found when compiling i386 LINT, GENERIC andru2005-12-051-1/+1
| | | | custom kernels.
* Fix -Wundef.ru2005-12-045-13/+13
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* Fix mysterious build failures (with parallel make) early inru2005-11-211-1/+1
| | | | | | | | buildkernel: provide a real but dummy name to ${DEPENDFILE} so that the relevant exists() check in bsd.prog.mk fails and ensures that ${GENHDRS} are built before any other objects. MFC after: 3 days
* Use the AHC_DISABLE_PCI_PERR flag to silence parity error reporting ongibbs2005-09-221-8/+15
| | | | | | chips where setting the FAILDIS bit is not effective. While here, try again to make it clear that reported parity errors indicate a failure of some PCI device *other than* the aic7xxx controller.
* Enhance diagnostic printfs for the chains of free lists used togibbs2005-09-221-1/+3
| | | | avoid SCB ID collissions to non-packetized targets.
* Correct bug that caused the completed "recovery" scb to have itsgibbs2005-09-222-2/+4
| | | | | | timer reset rather than the timer of an SCB still pending on the controller after recovery completed. This should correct timeout loops seen in the field.
* Set allow_memio to 1 if fetching the allow_memio hint fails. Thisgibbs2005-09-221-0/+1
| | | | | is the default behavior according the the bootverbose printf in the failure case.
* Back out change accidentally committed as Makefile:1.21 -- a localrwatson2005-08-031-1/+0
| | | | | | tweak to let the 6.x/7.x kernel series build on a 5.x userland. Pointed out by: njl
* Modify device drivers supporting multicast addresses to lock if_addr_mtxrwatson2005-08-031-0/+1
| | | | | | | | over iteration of their multicast address lists when synchronizing the hardware address filter with the network stack-maintained list. Problem reported by: Ed Maste (emaste at phaedrus dot sandvine dot ca> MFC after: 1 week
* Remove bus_{mem,p}io.h and related code for a micro-optimization on i386nyan2005-05-292-4/+0
| | | | | | and amd64. The optimization is a trivial on recent machines. Reviewed by: -arch (imp, marcel, dfr)
* remove useless ptr check; cur_column can never be nullsam2005-03-311-1/+1
| | | | Noticed by: Coverity Prevent analysis tool
* Use BUS_PROBE_DEFAULT for pci probe return valueimp2005-03-052-2/+2
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* aic79xx.c:gibbs2005-02-162-5/+16
| | | | | | | | | | | aic7xxx.c: Allow print_reg() to be called with a NULL column. aic79xx.c: Correct new usage of SCB_GET_TAG(). aic7xxx.c: Fix stray ahd that snuck in here.
* On Rev. B silicon, we disabled the enhanced busfree detection logic togibbs2005-02-161-3/+3
| | | | | | | | | | | close holes in detecting busfrees that occur after a packetized target transitions to a non-packetized phase. The most common case where this occurs is when a target is externally reset so the controller believes a packetzied negotiation agreement is still in effect. Unfortunately, disabling this feature seems to cause problems for the 7901B. Re-enable ehanced busfree detection for this part until I can get my hands on a samble to figure out if the old workaround is necessary and, if so, how to make it work correctly.
* MF5S: Explicitly initialize timedout_scb lists, use SCB_TAG for all accessgibbs2005-02-163-4/+9
| | | | | to the hardware_scb->tag field, limit max lun reported to CAM to 63, return after a panic to silence a warning.
* Make this compile from the last commitscottl2005-01-061-1/+1
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* Start each of the license/copyright comments with /*-, minor shuffle of linesimp2005-01-0634-34/+34
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* Start the dreaded NOFOO -> NO_FOO conversion.ru2004-12-211-1/+1
| | | | OK'ed by: core
* Add some useful target mode diagnostics for incoming commandsgibbs2004-11-181-7/+11
| | | | under the AHC_SHOW_TQIN debug flag.
* Revert to basing all timeout/timer values in ms rather than us. The switchgibbs2004-11-184-16/+26
| | | | | | | | | to us was to help out the Linux port, but really just invited overflow. In fact, the request sense timer was overflowing prior to this change making it much shorter than intended. aic_osm_lib.h: Be more careful about overflow in all timer/timeout primitives.
* For variables that are only checked with defined(), don't provideru2004-10-241-1/+1
| | | | any fake value.
* aic7xxx.h:gibbs2004-10-192-14/+91
| | | | | | | | | | | | | | | Add constants for SPI protocol delays that are needed for target mode. aic7xxx.c: Correct a target mode issue that caused an occassional spurious REQ to be seen on the bus when performing manual message processing (e.g. transfer rate negotiation). Enforce phase change bus settle rules with explicit delays when performing manual message processing in target mode. The sequencer already did this for "fast-path", target mode message processing.
* Skip probe attempts for ISA PnP devices.gibbs2004-10-151-1/+5
| | | | Pointed out by: imp
* Correct a typo in a comment: alloated->allocatedgibbs2004-08-301-1/+1
| | | | Reported by: Jens Schweikhardt <schweikh@schweikhardt.net>
* In the PCI error interrupt handler, specify the width of the PCI configurationgibbs2004-08-221-6/+7
| | | | | | cycle using the correct argument. The location and width were reversed. MFC in: 2 days
* Set AHD_BUSFREEREV_BUG in the bug field for Rev B chips, not thegibbs2004-08-221-3/+3
| | | | | | | feature field. Reported by: Ken Westerback <krw@openbsd.org> MFC in: 2 days
* Initialize iobase from the resource allocated by bus_alloc_resource_any()gibbs2004-08-181-2/+2
| | | | | | rather than with isa_get_port(). This value is only used in diagnostics, but the value we want to print is the value in our resource, not in any hint.
* Invert the polarity of two tests in the recovery code that could causegibbs2004-08-181-2/+2
| | | | | | | | the driver to issue a bus reset more quickly than intended. We want to *wait* if we find another SCB that could be the cause of this timeout, not proceed to a bus reset. Noticed by: kan
* Remove spurious EISA definitions left over from the initial port of thegibbs2004-08-181-13/+0
| | | | aic7xxx driver to U320 hardware.
* Remove ISA attachments dependence on eisaconf.hgibbs2004-08-182-3/+3
| | | | Noticed by: Takahashi Yoshihiro <nyan@jp.FreeBSD.org>
* Add ISA attachement files for the aic7xxx driver.gibbs2004-08-171-0/+299
| | | | | Approved by: re Reminded by: obrien
* Add an ISA attachement to the aic7xxx driver to handle 284X controllers.gibbs2004-08-1711-150/+127
| | | | | | | | | | | | | | | | | | | | | The ISA probe uses an identify routine to probe all slot locations from 1 to 14 that do not conflict with other allocated resources. This required making aic7770.c part of the driver core when compiled as a module. aic7xxx.c: aic79xx.c: aic_osm_lib.c: Use aic_scb_timer_start() consistently to start the watchdog timer. This removes a few places that verbatum copied the code in aic_scb_timer_start(). During recovery processing, allow commands to still be queued to the controller. The only requirement we have is that our recovery command be queued first - something the code already guaranteed. The only other change required to make this work is to prevent timers from being started for these newly queued commands. Approved by: re
* Extend critical section protection around portions of selection processinggibbs2004-08-131-1/+5
| | | | | that cannot tolerate changes to the waiting for selection queue by the host or the host canceling an active selection.
* Fix an off by one in the critical section clearing code. Thegibbs2004-08-131-2/+0
| | | | | | code was adjusting twice for the instruction pointer indicating the *next* instruction to execute. The aic79xx driver had a similar bug, but was fixed some time ago.
* Correct a very rare case where command ordering could be compromisedgibbs2004-08-047-110/+358
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Do a pass over all modules in the kernel and make them return EOPNOTSUPPphk2004-07-152-0/+2
| | | | | | | | for unknown events. A number of modules return EINVAL in this instance, and I have left those alone for now and instead taught MOD_QUIESCE to accept this as "didn't do anything".
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