NetBSD/sys/dev/isa
augustss a6a09bcdd6 Add support for ES18[67][89]. From PR #7427 by AW9K-NNK@asahi-net.or.jp,
Nonaka Kimihiro.
1999-06-18 20:25:23 +00:00
..
Makefile
README.seagate
ad1848_isa.c Create DMA maps at open time. 1999-03-22 14:54:01 +00:00
ad1848var.h Nuke sc_iooffs from orbit. This is exactly what bus_space_subregion() is for. 1999-03-22 14:29:14 +00:00
adv_isa.c Move chip version check from advlib.c to adv_isa.c 1999-06-12 12:10:30 +00:00
aha_isa.c Assign my copyrights to TNF. 1998-08-15 10:10:47 +00:00
aic_isa.c
aria.c * Redo the way the way the MIDI driver attaches to audio devices. 1998-08-17 21:16:09 +00:00
ariareg.h
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 Rework layer 2 protocol input routines. Instead of calling e.g. ether_input() 1999-05-18 23:52:51 +00:00
cs89x0reg.h
cs89x0var.h Enable this is a non-entropy rnd source. 1999-03-30 21:02:41 +00:00
cs4231var.h
cy_isa.c
elink.c Assign copyrights to TNF. 1998-08-15 03:51:30 +00:00
elink.h Add TLINK_619_POLY. 1999-03-22 22:26:27 +00:00
esp_isa.c Adapt to the new scsipi_adapter interface. 1998-11-19 21:53:32 +00:00
espvar.h Kill vestiges of isa_establish(). 1999-02-19 16:15:06 +00:00
ess.c Add support for ES18[67][89]. From PR #7427 by AW9K-NNK@asahi-net.or.jp, 1999-06-18 20:25:23 +00:00
ess_isa.c Add support for ES18[67][89]. From PR #7427 by AW9K-NNK@asahi-net.or.jp, 1999-06-18 20:25:23 +00:00
essreg.h Add support for ES18[67][89]. From PR #7427 by AW9K-NNK@asahi-net.or.jp, 1999-06-18 20:25:23 +00:00
essvar.h Add support for ES18[67][89]. From PR #7427 by AW9K-NNK@asahi-net.or.jp, 1999-06-18 20:25:23 +00:00
files.isa Add adv_isa.c entry 1999-06-06 17:30:37 +00:00
gus.c The AD1848/CS4231 attachment doesn't create DMA maps any more, so we have to 1999-03-30 16:40:47 +00:00
gusreg.h
i82365_isa.c
i82365_isasubr.c Oops; PCIC_INTR_ENABLE does something *very* different. 1999-02-19 03:14:00 +00:00
i82365_isavar.h
ics2101.c
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
if_depca_isa.c Assign my copyrights to TNF. 1998-08-15 10:51:16 +00:00
if_ec.c Use BUS_SPACE_ALIGNED_POINTER() instead of ALIGNED_POINTER() where the pointer 1999-03-23 21:41:07 +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 Rework layer 2 protocol input routines. Instead of calling e.g. ether_input() 1999-05-18 23:52:51 +00:00
if_egreg.h
if_el.c Rework layer 2 protocol input routines. Instead of calling e.g. ether_input() 1999-05-18 23:52:51 +00:00
if_elreg.h
if_ep_isa.c Improved 509B-in-PnP mode detection (Christoph Badura, Jonathan Stone): 1999-04-28 01:20:01 +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 Use ETHER_*_LEN constants from <net/if_ether.h> instead of defining them 1999-03-25 23:20:22 +00:00
if_ix.c Fix more `void *' arithmetic. 1999-01-08 19:22:34 +00:00
if_ixreg.h
if_iy.c Rework layer 2 protocol input routines. Instead of calling e.g. ether_input() 1999-05-18 23:52:51 +00:00
if_lc_isa.c
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
if_tr_isa.c Convert some bogus panic()s into printf()s. 1999-04-30 15:29:24 +00:00
if_tribm_isa.c Oops. RcsID police. 1999-03-22 23:01:36 +00:00
if_trtcm_isa.c Convert some bogus panic()s into printf()s. 1999-04-30 15:29:24 +00:00
if_we.c Make it possible to force 16 mode via "flags 4" in kernel configuration. 1999-03-28 12:51:49 +00:00
if_wereg.h
isa.c Kill vestiges of isa_establish(). 1999-02-19 16:15:06 +00:00
isadma.c If bus_dmamap_create() fails, free the DMA channel. 1999-03-22 07:06:09 +00:00
isadmareg.h
isadmavar.h Add support for demand mode with auto-init. 1999-02-22 02:32:43 +00:00
isareg.h
isavar.h pull isa_machdep.h in from machine/ instead of from $(MACHINE)/isa/ 1999-03-19 05:13:16 +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 Change DIOCEJECT to do what's needed to eject a device before the eject 1999-02-08 16:33:16 +00:00
mcdreg.h
midi_pcppi.c Make the copyright header conform to the NetBSD template. 1998-11-25 22:17:06 +00:00
mpu.c Remove leftover definition of AUDIO_DEBUG. 1999-03-24 20:59:21 +00:00
mpuvar.h Several things: 1999-03-22 07:37:35 +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 Kill vestiges of isa_establish(). 1999-02-19 16:15:06 +00:00
opl_ess.c Make copyrights conform. 1999-04-13 20:37:21 +00:00
opl_isa.c Make copyrights conform. 1999-04-13 20:37:21 +00:00
opl_sb.c Make the OPL information string more informative. 1998-12-08 14:26:56 +00:00
pas.c Add separate halt_output and halt_input routines. 1999-02-18 07:08:35 +00:00
pasreg.h
pcdisplay.c remove dummy "load_font" entries 1999-01-11 21:35:54 +00:00
pcdisplayvar.h
pckbc.c Don't try to selftest the keyboard port. PC keyboard controllers have 1999-03-05 10:40:54 +00:00
pckbcvar.h
pcppi.c
pcppireg.h
pcppivar.h
pss.c Kill vestiges of isa_establish(). 1999-02-19 16:15:06 +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
satlinkio.h
satlinkreg.h
sb.c Several things: 1999-03-22 07:37:35 +00:00
sb_isa.c Several things: 1999-03-22 07:37:35 +00:00
sbdsp.c Make sure we clean up any DMA maps if the open fails. 1999-03-22 14:38:02 +00:00
sbdspvar.h Several things: 1999-03-22 07:37:35 +00:00
sbreg.h Several things: 1999-03-22 07:37:35 +00:00
sbvar.h Assign copyright to TNF. 1998-09-05 14:12:36 +00:00
seagate.c don't need isa_machdep.h, since isavar.h is included 1999-03-19 05:42:00 +00:00
spkr.c
spkrio.h
tcic2_isa.c Correct a misleading comment copied over from the PCIC version of this file. 1999-04-08 16:14:29 +00:00
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
vga_isavar.h
wdc_isa.c 32 bits I/O ocasionally fails on some hardware, so the test succeed but 1999-05-19 14:41:25 +00:00
wds.c Update for changed scsipi_xfer struct. 1998-12-09 08:37:50 +00:00
wdsreg.h
wss.c Add separate halt_input and halt_output methods in ad1848_isa, which disable 1999-02-18 17:27:39 +00:00
wss_isa.c Use the trigger interface, and clean up a pile of cruft. 1999-02-17 23:05:28 +00:00
wssreg.h
wssvar.h Kill vestiges of isa_establish(). 1999-02-19 16:15:06 +00:00
wt.c Avoid `void *' arithmetic. Fixes PR 6783. 1999-01-10 21:57:19 +00:00
wtreg.h
ym.c Add separate halt_input and halt_output methods in ad1848_isa, which disable 1999-02-18 17:27:39 +00:00
ymvar.h Update for minor changes in the ad1848 back end. 1999-02-23 21:16:27 +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.