Commit Graph

18 Commits

Author SHA1 Message Date
bouyer cd3578d7ef More copyright fixes, pointed out by Thomas. Thanks ! 2002-04-23 20:41:13 +00:00
bouyer 97fe8b91c5 Move a few things around, so that ic/siop_common.c and pci/siop_pci_common.c
can be compiled without including siopvar.h.
2002-04-20 00:15:54 +00:00
bouyer 937a7a3ed9 Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
  ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
  to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
  peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
  recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
  scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
  (no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
  set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
  the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
  will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
2001-04-25 17:53:04 +00:00
bouyer 2b318d4800 Note that SF_CHIP_QUAD is for clock quadrupler with busy wait for PPL.
SF_CHIP_DBLR is for clock doubler or quadrupler.
2001-03-15 17:38:59 +00:00
bouyer 9ea2b5098b Preliminary support for SYM53C1010-33 (at 80MB/s only for now), based on
patches sent by Matthias Drochner <M.Drochner@fz-juelich.de> and
Kenneth R Westerback <kwesterback@home.com>
2001-03-12 10:00:50 +00:00
bouyer fc92601259 Fixes related to QUEUE FULL status:
- move status handling in siop_scsicmd_end(), it's better than in siop_intr()
- define 2 internal SIOP status, for "no status reported by device" and
  reset condition
- add a list of "urgent" command, to be executed before the list of command
  queued the normal way; this is used for command which got aborted
  by a QUEUE FULL and have to be requeued in order.
- Don't accept to send a Q_TAG message not immediatly folowing a IDENTIFY
2000-10-23 23:18:10 +00:00
bouyer 7777f61cbe Rearrange for script changes (scheduler core in main script, command part
of the scheduler in command table).
Add tagged command queuing support.
2000-10-23 14:56:16 +00:00
bouyer 9d3f5d7fbd Adapt for new lun switch script.
Implement SCBUSACCEL ioctl.
Snapshot of work in progress on tagged queuing: we can send/receive
queue tag messages. Infrastructure to manage multiple commands per
devices not here yet.
2000-10-18 17:06:52 +00:00
bouyer 171adcf634 Fix recurent typo: shed->sched 2000-10-06 16:39:04 +00:00
bouyer e353a6d9b2 Adapt for reselect handling from the script. While here, fix typo
(SIOP_SCXFER -> SIOP_SXFER).
2000-10-06 16:35:13 +00:00
bouyer 22a10be43e sheduler->scheduler, as pointed out by Klaus Klein 2000-06-13 13:59:15 +00:00
bouyer b063b2ec36 Separate the sheduler from the main script, allocate another DMA-safe
memory page for the sheduler. Put the main script in the on-chip RAM when
available.
Avoid a null-pointer dereference when DSA is invalid.
2000-05-25 10:10:54 +00:00
bouyer 2904666f56 Allocate dynamically the command block descriptors. 2000-05-23 17:08:07 +00:00
bouyer 863014523a - split siop.c in script-dependant vs script-independant part, for
comming esiop
- add a reset callback for bus-dependant registers settings
2000-05-15 07:48:24 +00:00
bouyer 3bb9a5f666 - do sync/wide negotiation
- use a circular queue for the start slots, so that order has better chances
  to be preserved.
2000-05-02 19:03:02 +00:00
bouyer bf7a94ec2b Fix copyrigth notice. 2000-04-27 14:06:57 +00:00
bouyer 88be4752d0 - Change the script to start new commands in an asyncronous way, using
'command slots' in which the host can put command and wait for the script
 to start them
- Change siop.c to do full disconnect/reslelect, allowing as much as one
 command per target/lun to run in parallel.
- Fix bug in registers init where a board without BIOS would end at
  ID 0 (now the driver works on alpha too).
- better handling of messages, sending back a MSG_EXT_SDTR in response to an
  incoming MSG_EXT_SDTR, and MSG_MESSAGE_REJECT for unhandled messages.
- fix use of bus_dmamap_sync() and htole32().
- supports shared interrups
- change some int8 and int16 to int, for alpha and mips benefits ( suggested by
  Toru Nishimura)
2000-04-25 16:27:05 +00:00
bouyer 19ada4a82a Snapshot of work in progress: new driver for the NCR 53c8xx SCSI controller
(the name 'siop' is still being discussed, may change).
Only basic disconnect/reselect for now, no sync/wide negotiation.
Tested with 810A, 875 and 895 on i386 only.
The bus-independant part should also be able to handle the 53c720 and 53c770.
A new driver with enhanced script should appear for the 825/875/895 'soon'.
2000-04-21 17:56:58 +00:00