NetBSD/sys/dev/isa
thorpej d28fe378bc Use device_lookup(). 2000-07-06 02:02:48 +00:00
..
Makefile Track name change espvar.h -> esp_isavar.h so 'make includes' works again. 2000-03-19 09:11:50 +00:00
README.seagate
ad1848_isa.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
ad1848var.h Change the kernel mmap interface so that the offset to map is an 2000-06-26 04:55:19 +00:00
addcom_isa.c the status register is _always_ at 0x420 -- grr. How should I put this in the config file rather than hard-coded? 2000-04-21 20:13:41 +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
aic_isa.c
aria.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
ariareg.h
ast.c Rather than using a magic constant, use `com_scratch' as the offset 2000-05-20 18:25:41 +00:00
bha_isa.c Fix compilation of ISA bha front-end. PR #8528, Takahiro Kambe. 1999-10-01 18:17:12 +00:00
boca.c Rather than using a magic constant, use `com_scratch' as the offset 2000-05-20 18:25:41 +00:00
cms.c Add Creative Music System driver. From Gregory McGarry <g.mcgarry@ieee.org> 2000-05-01 22:48:33 +00:00
cmsreg.h Add Creative Music System driver. From Gregory McGarry <g.mcgarry@ieee.org> 2000-05-01 22:48:33 +00:00
com_isa.c Don't need to include <sys/conf.h> here. 2000-03-29 03:43:31 +00:00
com_multi.c
com_multi.h
cs89x0.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
cs89x0reg.h
cs89x0var.h
cs4231var.h
cy_isa.c
dpt_isa.c Use my proper name in copyrights. 2000-06-30 13:36:47 +00:00
ega.c Change the kernel mmap interface so that the offset to map is an 2000-06-26 04:55:19 +00:00
egavar.h First cut on an EGA driver. For initial testing, lacks some EGA vs CGA/MGA 1999-12-13 16:28:57 +00:00
elink.c Remove register declarations. 2000-03-30 12:41:09 +00:00
elink.h
esp_isa.c Adapt MI ncr53c9x changes. 2000-06-05 15:08:00 +00:00
esp_isavar.h Adapt to ncr53c9x change. 2000-03-19 21:27:01 +00:00
ess.c Change the kernel mmap interface so that the offset to map is an 2000-06-26 04:55:19 +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 New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +00:00
fd.c Use device_lookup(). 2000-07-06 02:02:48 +00:00
fdc_isa.c Traditionally, the floppy controller was configured at 0x3f0 for 8 ports, 2000-05-02 03:33:45 +00:00
fdcvar.h Carve off the ISA configuration bits from the floppy driver. Driver is 2000-04-23 16:47:45 +00:00
fdreg.h Traditionally, the floppy controller was configured at 0x3f0 for 8 ports, 2000-05-02 03:33:45 +00:00
files.isa Add Creative Music System driver. From Gregory McGarry <g.mcgarry@ieee.org> 2000-05-01 22:48:33 +00:00
gus.c New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +00:00
gusreg.h
i82365_isa.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
i82365_isasubr.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
i82365_isavar.h Don't use void * for chipset tags. Bad hacker, no biscuit. 2000-02-22 16:04:44 +00:00
ics2101.c Remove register declarations. 2000-03-30 12:41:09 +00:00
ics2101var.h
if_ai.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
if_aireg.h
if_ate.c For all network drivers that call ether_ifattach(), and also 2000-05-29 17:37:12 +00:00
if_cs_isa.c
if_depca_isa.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
if_ec.c
if_ecreg.h
if_ef.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
if_efreg.h
if_eg.c Remove register declarations. 2000-03-30 12:41:09 +00:00
if_egreg.h
if_el.c Remove register declarations. 2000-03-30 12:41:09 +00:00
if_elreg.h
if_ep_isa.c
if_fereg.h
if_fmv.c For all network drivers that call ether_ifattach(), and also 2000-05-29 17:37:12 +00:00
if_hp.c Remove register declarations. 2000-03-30 12:41:09 +00:00
if_ix.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
if_ixreg.h
if_iy.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
if_lc_isa.c
if_le_isa.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
if_levar.h
if_ne_isa.c
if_ntwoc_isa.c Add Riscom/N2 isa driver, most of the probe code was adapted from the 2000-01-04 06:29:21 +00:00
if_ntwoc_isareg.h Add Riscom/N2 isa driver, most of the probe code was adapted from the 2000-01-04 06:29:21 +00:00
if_sm_isa.c For all network drivers that call ether_ifattach(), and also 2000-05-29 17:37:12 +00:00
if_tr_isa.c Fix braino in previous, pointed out by Jaromir. 2000-06-06 18:42:47 +00:00
if_tribm_isa.c
if_trtcm_isa.c Convert some bogus panic()s into printf()s. 1999-04-30 15:29:24 +00:00
if_we.c
if_wereg.h
ioat66.c added support for BOCA 6port ISA adapter. 3x16552 with an 1999-11-15 21:13:38 +00:00
isa.c Don't need to include <sys/conf.h> here. 2000-03-29 03:43:31 +00:00
isadma.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
isadmareg.h Add a new function call to the ISA DMA API: isa_dmamaxsize(), which returns 2000-02-07 22:07:27 +00:00
isadmavar.h Change the kernel mmap interface so that the offset to map is an 2000-06-26 04:55:19 +00:00
isareg.h
isavar.h Implement the more flexiable `evcnt' interface as discussed (briefly) on 2000-06-04 19:14:14 +00:00
lm_isa.c Add a clearing-house pseudo-device for system monitoring devices 2000-06-24 00:37:19 +00:00
lpt_isa.c Don't need to include <sys/conf.h> here. 2000-03-29 03:43:31 +00:00
madreg.h
mcd.c Use device_lookup(). 2000-07-06 02:02:48 +00:00
mcdreg.h in allegedly-MI code, if we're gonna use '#pragma pack(N)', #pragma pack() 2000-06-08 18:22:15 +00:00
midi_pcppi.c
mpu_isa.c Make this file compile again. 1999-08-05 11:25:47 +00:00
mpu_sb.c Add another file I forgot in my MPU changes. 1999-08-04 10:46:34 +00:00
mpu_ym.c "mpu at ym" attachment glue for making use of 1999-10-05 03:41:05 +00:00
nca_isa.c Add a "sc_rev" member to ncr5380_softc and handle CXD1180 quirk 2000-03-25 15:27:54 +00:00
opl_ess.c
opl_isa.c Fill in the softc's bus space tag (OOPS!). 2000-02-26 05:11:27 +00:00
opl_sb.c
opl_wss.c Implement opl at wss. 1999-08-14 21:19:29 +00:00
opl_ym.c "opl at ym" attachment glue for making use of 1999-10-05 03:40:21 +00:00
pas.c pasfind(): avoid silly bug - if bus_space_map() of SB I/O space failed, 2000-04-28 08:51:42 +00:00
pasreg.h
pcdisplay.c Change the kernel mmap interface so that the offset to map is an 2000-06-26 04:55:19 +00:00
pcdisplayvar.h
pckbc_isa.c New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +00:00
pcppi.c New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +00:00
pcppireg.h
pcppivar.h - Make the pcppi and pckbd drivers cooperate a little more -- pckbd provides 2000-03-06 21:40:08 +00:00
pss.c
pssreg.h
rtfps.c
satlink.c Use device_lookup(). 2000-07-06 02:02:48 +00:00
satlinkio.h
satlinkreg.h
sb.c NMIDI -> NMPU, to be consistent with sbdsp.c. 1999-10-10 00:08:24 +00:00
sb_isa.c Do not complain in sbfind() if another driver has mapped the registers. 1999-09-07 00:49:41 +00:00
sbdsp.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
sbdspvar.h Change the kernel mmap interface so that the offset to map is an 2000-06-26 04:55:19 +00:00
sbreg.h Allow irq 15 since some clones use it. 1999-11-02 23:35:02 +00:00
sbvar.h
seagate.c Use device_lookup(). 2000-07-06 02:02:48 +00:00
spkr.c Remove register declarations. 2000-03-30 12:41:09 +00:00
spkrio.h
tcic2_isa.c remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:27:51 +00:00
tcom.c
uha_isa.c New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +00:00
vga_isa.c
vga_isavar.h
wdc_isa.c sync with ata driver change (dma_start args). 2000-04-02 02:07:52 +00:00
wds.c New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +00:00
wdsreg.h
wss.c
wss_isa.c avoid cast 1999-10-25 19:39:54 +00:00
wssreg.h
wssvar.h Implement opl at wss. 1999-08-14 21:19:29 +00:00
wt.c Use device_lookup(). 2000-07-06 02:02:48 +00:00
wtreg.h
ym.c MAke sure bass&treble start in their mid position. 2000-07-04 10:02:45 +00:00
ymvar.h New callout mechanism with two major improvements over the old 2000-03-23 07:01:25 +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.