NetBSD/sys/dev/isa
drochner 1eba733d91 remove dummy "load_font" entries 1999-01-11 21:35:54 +00:00
..
Makefile Rework the way kernel include files are installed. In the new method, 1998-06-12 23:22:30 +00:00
README.seagate
ad1848_isa.c Add support for `AdLib NSC 16 PNP' as wss, joy. 1998-11-26 21:45:13 +00:00
ad1848var.h Split the AD1848 driver into MI (dev/ic/ad1848.c) and ISA parts. 1998-08-25 22:34:29 +00:00
aha_isa.c Assign my copyrights to TNF. 1998-08-15 10:10:47 +00:00
aic_isa.c Nuke __BROKEN_INDIRECT_CONFIG. 1998-06-09 07:24:55 +00:00
aria.c * Redo the way the way the MIDI driver attaches to audio devices. 1998-08-17 21:16:09 +00:00
ariareg.h Add RCS IDs. 1998-07-21 07:48:36 +00:00
ast.c Make these files compile again; no longer necessary to pass 1998-09-18 14:38:48 +00:00
bha_isa.c Assign my copyrights to TNF. 1998-08-15 10:10:47 +00:00
boca.c Make these files compile again; no longer necessary to pass 1998-09-18 14:38:48 +00:00
com_isa.c Garbage collect unused 3rd parameter to comprobe1(). 1998-09-16 21:30:58 +00:00
com_multi.c Garbage collect unused 3rd parameter to comprobe1(). 1998-09-16 21:30:58 +00:00
com_multi.h
cs89x0.c Fix one last bug in the multicast filter calculation. 1998-11-13 09:37:46 +00:00
cs89x0reg.h Define the CS8900 memory size, and macros to test for valid memory 1998-07-25 00:41:47 +00:00
cs89x0var.h Track our carrier status and report it in the media status callback. 1998-08-07 05:55:14 +00:00
cs4231var.h
cy_isa.c Nuke __BROKEN_INDIRECT_CONFIG. 1998-06-09 07:24:55 +00:00
elink.c Assign copyrights to TNF. 1998-08-15 03:51:30 +00:00
elink.h Assign copyrights to TNF. 1998-08-15 03:51:30 +00:00
esp_isa.c Adapt to the new scsipi_adapter interface. 1998-11-19 21:53:32 +00:00
espvar.h
ess.c Fix more `void *' arithmetic. 1999-01-08 19:22:34 +00:00
essreg.h Set the FIFO control bits correctly so that stereo recording works. 1998-08-09 02:54:50 +00:00
essvar.h ess_audio_channel:active is now used even when DIAGNOSTICS is not defined. 1998-08-11 12:16:22 +00:00
files.isa Add Byte Runner Technologies TC-400 and TC-800 driver from Eric S. Hvozda 1998-12-16 11:33:50 +00:00
gus.c Add mmap support for gus and gusmax, PR #5988, Feico Dillema. 1998-09-09 04:40:34 +00:00
gusreg.h
i82365_isa.c Nuke __BROKEN_INDIRECT_CONFIG. 1998-06-09 07:24:55 +00:00
i82365_isasubr.c
i82365_isavar.h
ics2101.c Remove a bunch of totally unnecessary #include <machine/pio.h> 1998-06-17 08:17:25 +00:00
ics2101var.h
if_ai.c Fix more `void *' arithmetic. 1999-01-08 19:22:34 +00:00
if_aireg.h
if_ate.c Enable early probe stage printf's not by DIAGNOSTIC but more driver 1998-10-07 04:58:06 +00:00
if_cs_isa.c Fix cfattach naming botch. 1998-07-27 18:27:36 +00:00
if_depca_isa.c Assign my copyrights to TNF. 1998-08-15 10:51:16 +00:00
if_ec.c Holy smokes, batman! Actually fill in the "init_card" entry point! 1998-10-27 22:45:13 +00:00
if_ecreg.h
if_ef.c Fix more `void *' arithmetic. 1999-01-08 19:22:34 +00:00
if_efreg.h
if_eg.c Simplify the copy loops a bit. 1998-12-12 16:58:10 +00:00
if_egreg.h
if_el.c Simplify the copy loops a bit. 1998-12-12 16:58:10 +00:00
if_elreg.h
if_ep_isa.c Add the 'ex' driver, a DMA driver for 3Com 90x and 90xB cards. Rename 1998-11-04 00:29:28 +00:00
if_fereg.h
if_fmv.c Enable early probe stage printf's not by DIAGNOSTIC but more driver 1998-10-07 04:58:06 +00:00
if_hp.c defopt NS, NSIP. 1998-07-05 06:49:00 +00:00
if_ix.c Fix more `void *' arithmetic. 1999-01-08 19:22:34 +00:00
if_ixreg.h
if_iy.c Use splnet, not splimp. 1998-08-08 23:51:39 +00:00
if_lc_isa.c defopt NS, NSIP. 1998-07-05 06:49:00 +00:00
if_le_isa.c Assign my copyrights to TNF. 1998-08-15 10:51:16 +00:00
if_levar.h Assign my copyrights to TNF. 1998-08-15 10:51:16 +00:00
if_ne_isa.c make this compile again (missing semi-colon) 1998-11-01 01:04:48 +00:00
if_sm_isa.c defopt NS, NSIP. 1998-07-05 06:49:00 +00:00
if_we.c Holy smokes, batman! Actually fill in the "init_card" entry point! 1998-10-27 22:45:13 +00:00
if_wereg.h
isa.c Assign copyrights to TNF. 1998-08-15 03:51:30 +00:00
isadma.c fix problems in many d_mmap routines: 1998-11-19 15:38:20 +00:00
isadmareg.h
isadmavar.h Add an additional ISA DMA mode: LOOPDEMAND. This is for devices, such 1998-06-28 06:59:35 +00:00
isareg.h
isavar.h Change comment about isa_intr_establish() as discussed on tech-kern. 1998-11-30 12:57:10 +00:00
lpt_isa.c Make copyright notices with my name consistent. 1998-08-15 03:02:31 +00:00
madreg.h Make the OPL information string more informative. 1998-12-08 14:26:56 +00:00
mcd.c * Add defopt MCD_PROMISC for more conservative probes. 1998-06-23 03:26:18 +00:00
mcdreg.h
midi_pcppi.c Make the copyright header conform to the NetBSD template. 1998-11-25 22:17:06 +00:00
mpu401.c Make the copyright header conform to the NetBSD template. 1998-11-25 22:17:06 +00:00
mpu401var.h Make the copyright header conform to the NetBSD template. 1998-11-25 22:17:06 +00:00
nca.c Adapt to the new scsipi_adapter interface. 1998-11-19 21:53:32 +00:00
ncareg.h PR/6274: John Ruschmeyer: Add isa/i386 ncr53c80 driver. 1998-10-25 18:41:56 +00:00
ncavar.h Remove unused sc_iot/sc_ioh fields. 1998-10-25 23:48:56 +00:00
opl_ess.c Make the OPL information string more informative. 1998-12-08 14:26:56 +00:00
opl_isa.c Make the OPL driver attach directly to ISA as well. 1998-08-26 13:33:59 +00:00
opl_sb.c Make the OPL information string more informative. 1998-12-08 14:26:56 +00:00
pas.c * Redo the way the way the MIDI driver attaches to audio devices. 1998-08-17 21:16:09 +00:00
pasreg.h
pcdisplay.c remove dummy "load_font" entries 1999-01-11 21:35:54 +00:00
pcdisplayvar.h
pckbc.c Deal with an unusual response on port selftest commands. This makes at 1998-12-14 13:54:25 +00:00
pckbcvar.h
pcppi.c
pcppireg.h
pcppivar.h
pss.c made prototype for debug function wss_dump_regs match its definition. 1998-12-05 10:49:24 +00:00
pssreg.h
rtfps.c Make these files compile again; no longer necessary to pass 1998-09-18 14:38:48 +00:00
satlink.c Nuke __BROKEN_INDIRECT_CONFIG. 1998-06-09 07:24:55 +00:00
satlinkio.h
satlinkreg.h
sb.c * Redo the way the way the MIDI driver attaches to audio devices. 1998-08-17 21:16:09 +00:00
sb_isa.c * Redo the way the way the MIDI driver attaches to audio devices. 1998-08-17 21:16:09 +00:00
sbdsp.c Avoid arithmetic on `void *' since that's not ANSI C. 1999-01-08 18:10:35 +00:00
sbdspvar.h Use the new trigger_{in,out}put interface. 1998-08-10 00:20:39 +00:00
sbreg.h * Redo the way the way the MIDI driver attaches to audio devices. 1998-08-17 21:16:09 +00:00
sbvar.h Assign copyright to TNF. 1998-09-05 14:12:36 +00:00
seagate.c Update HBAs to incorporate the new max_lun property. 1998-12-05 19:43:33 +00:00
spkr.c
spkrio.h
tcom.c Add Byte Runner Technologies TC-400 and TC-800 driver from Eric S. Hvozda 1998-12-16 11:33:50 +00:00
uha_isa.c Assign my copyrights to TNF. 1998-08-15 10:10:47 +00:00
vga_isa.c clean up vga_isa_match() - always return "2" on success to make the 1998-06-12 18:45:48 +00:00
vga_isavar.h
wdc_isa.c Rename pio_mode, etc ... to PIO_cap, etc ... for consistency with the 1998-12-03 18:24:30 +00:00
wds.c Update for changed scsipi_xfer struct. 1998-12-09 08:37:50 +00:00
wdsreg.h
wss.c Make the OPL information string more informative. 1998-12-08 14:26:56 +00:00
wss_isa.c Disable the I/O address, DRQ and IRQ validation; assume that the config file 1998-10-15 04:05:53 +00:00
wssreg.h
wssvar.h Split the AD1848 driver into MI (dev/ic/ad1848.c) and ISA parts. 1998-08-25 22:34:29 +00:00
wt.c Avoid `void *' arithmetic. Fixes PR 6783. 1999-01-10 21:57:19 +00:00
wtreg.h
ym.c Call correct ad1848 attach routine. Fixes PR 6269. 1998-10-11 17:02:36 +00:00
ymvar.h Split the AD1848 driver into MI (dev/ic/ad1848.c) and ISA parts. 1998-08-25 22:34:29 +00:00

README.seagate

#	$NetBSD: README.seagate,v 1.2 1998/01/05 07:31:07 perry Exp $

The hardware:

The ST01/02, and Future Domain 950 are very simple SCSI controllers. They are
not busmastering, so the processor must do all transfers a la IDE. They support
blind transfer by adding wait states (up to a certain limit). Interrupt is
generated for reconnect and parity errors (maybe also for some other events).

The card consists of one command port that writes to scsi control lines, reads
status lines, and a data port that read/writes to the 8 data lines. The address
decoding gives both data and control ports large memory areas to a single
port. This is used by the code.

The ST01/02 differs from the FD950 in memory address location and SCSI id.

Probing for the card:

A card is recognized by comparing the BIOS signature with known signatures. A
new card may not be recognized if the BIOS signature has changed. Please send
new signatures to me.

Driver function:

A scsi command is sent to scsi_cmd function. The command is either placed in
the queue or an retryable message is returned. The routine may wait for
completion of the command depending on the supplied flags. A timer is started
for every command placed in the queue. The commands are added in the order they
are received. There is a possiblity to make all REQUEST SENSE commands be
queued before all other commands, but I dont think it is a good thing (Linux
do however use this). 

The card is mostly controlled by the sea_main function. It is called by
scsi_cmd, the interrupt routine, and the timeout routine. The sea_main routine
runs as long there are something to do (transfer data, issue queued commands,
and handle reconnected commands).

The data transfers may be done in two different ways: Blind and polled
transfers. They differ in the way the driver does it handshaking with the
target. During a blind transfer, the driver code blindly transfers a block
of data without checking for changed phase. During polled transfers, the
phase is checked between every character transfered. The polled transfers
are always used for status information and command transfers.

Because the card does not use dma in any way, there is no need to handle
physical addresses. There is no problem with the isa-bus address limit of
16MB, making bounce-buffers unnecessary.

The data structures:

Every card has a sea_softc structure keeping the queues of commands waiting to
be issued, and commands currently disconnected. The type of card (Seagate or
Future Domain), data and control port addresses, scsi id, busy flags for all
possible targets, and interrupt vector for the card.

Every scsi command to be issued are stored in a sea_scb structure. It contains
a flag describing status/error of the command, current data buffer position,
and number of bytes remaining to be transfered.


PROBLEMS

I have had problems getting the ST02 boot using the boot floppies. I think it
is some problem with BIOS calls not working. It is unfortunately impossible to
disconnect the ST02 floppy controller.

I have had problem to get the driver talk to a 40 MB Seagate disk. I dont have
access to it any more, so I can't do any more checks on that.

NOTE: The ST02 creates its own description of the disk attached. This is not
the same as the disk says. This translation problem may cause problems when
sharing a disk between both DOS and BSD. It is however not impossible.