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12 Commits

Author SHA1 Message Date
bouyer 7ae5c097e5 Rearrange things a bit to have less jumps 
Install the core of the scheduler in main script (so it's in RAM when there is
one), and avoid jump in the common case. The command part of the scheduler now
lives in host memory, with tables.
Add template for a tag switch.
 2000-10-23 14:53:53 +00:00
bouyer 67618a69ae Move restore_scntl3 before the lun switch, to ease freeing of unused lun 
slots.
 2000-10-19 07:20:16 +00:00
bouyer 75246b83c0 Redo the target/lun sw in a better way, and handle queue tag messages. 2000-10-18 17:01:13 +00:00
bouyer 171adcf634 Fix recurent typo: shed->sched 2000-10-06 16:39:04 +00:00
bouyer c67eef4e7d Handle reselect entirely in script; for this provide a script area, 
modified by the driver, which will load the appropriate DSA for a given
target/lun.
 2000-10-06 16:31:17 +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 06d4aa45eb - use my standart copyrigth notice 
- After reselect, don't clear ack after the IDENTIFY message, this breaks
  when the reselecting target has different sync parameters than the previous
  one.
 2000-05-15 07:43:45 +00:00
bouyer c8ff442f72 Add a flag hold in scratcha0, set when we're doing a data transfer. Used 
for save data pointers.
 2000-05-04 15:42:42 +00:00
bouyer fe54b787dc Add NetBSD RCS Id and copyrigth notice. 2000-04-27 14:08:09 +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