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13 Commits

Author SHA1 Message Date
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