ID) when determining if the Vendor ID is invalid. The spec says that
Vendor ID of 0xffff is invalid, so, it doesn't _matter_ what the product
ID is in that case. Treat Vendor ID 0 as invalid because we always have.
and see if anything responds. if nothing (that's attributable to the
PCI IDE controller) responds, then that channel either has no devices on
it or has been disabled (via a non-standard mechanism) by the BIOS. If nothing
responds, don't map the compat.-mode interrupt or attach the wdc to that
channel, because the BIOS is likely to assign that IRQ to a different PCI
device. If that happens, the kernel will panic because that device will
try to map the IRQ level-triggered, but the compat interrupt will have been
mapped edge-triggered. (One possible way around this is to map the compat
interrupt edge-triggered, but it's not clear reading the spec that this
is correct or desirable.)
insert a check to see whether a channel appears to be enabled. Shouldn't
be necessary, according to the spec, but some PC chipsets allow individual
compatibility channels to be disabled. "I hate PCs."
controller driver. These are commented out here until the wdc
declaration mess is resolved, and until then need to go into MD
files files in places where they play nice with the wdc declaration.
entry (because the same product id is used for the 640B, as well). Note
that a few of the entries (PCI0642, PCI0650A) no longer have data to
be found on the CMD web site, and note that PCI0650A should probably have
its "A" trimmed as well.
in pci/if_tl.c, call config_found() with a print function, instead of
printing ourself a message in if_tl.c if no miibus was found. The print
function is in mii/mii.c (mii_adapter_print()) so that it can be used by any
adapter (idea from the scsi system).
it simple, and allocate one for each transmit and receive descriptor.
In addition to being simpler and faster, this fixes a serious memory leak
in the transmit path.
tested on any other platform other than i386. Use of bus_dma(9) can be
turned by defining TULIP_BUS_DMA_NOTX and TULIP_BUS_DMA_NORX. These allow
one to determine if the problem is in the transmit or receive path.
A problem reported by mycroft is also fixed.
- Fall back on i/o space if mem space isn't available.
- Card reports mem space as prefetchable, but mapping the card into dense
space fails in nasty ways on the Alpha. Force mapping into sparse
space by clearing the BUS_SPACE_MAP_CACHEABLE bit (XXX!).
nullbuf (used to pad packets < ETHER_MIN_SIZE) is used for all tl
interfaces. Allocates only once, and never deallocate it (as we can't say
if another instance of the driver is interface is using it).
i/o-mapped space to always be used), we discover that at least one
ThunderLAN interface can't read the EEPROM properly if memory-mapped
access is used. Kludge around this for now by "prefering" i/o space.
- Do PCI space configuration like the other drivers. In particular,
don't _disable_ the space we're not using because some lame firmware
implementations might not reenable it on warm boot. Also, prefer
memory space always.
- Make match and info-gathering in attach table-driven.
- Rearrange things a bit to be a bit more visually pleasing during boot.
Also, fixup some #include problems.
- Work around a bug in the 82557 that causes the receiver to lock up
in certain conditions by kicking the multicast address filter if we
haven't heard anything come down the wire for some period of time.
- Fix a bug that could cause TxCB descriptor chains to cross page boundaries
on the Alpha.
- Remove some unneeded register masking.
- Fix a bug where too much data was copied from the config template, causing
memory corruption.
- Fix handing of if_timer (it was be cleared too early in some cases).
- Attempt to reduce the chances of receiver overrun by doubling the
number of receive DMA segments, and processing receive interrupts
before transmit interrupts.
- Remove a gratuitous assignment.
- Fix a bug where incoming packets were counted twice.
pseudo-device rnd # /dev/random and in-kernel generator
in config files.
o Add declaration to all architectures.
o Clean up copyright message in rnd.c, rnd.h, and rndpool.c to include
that this code is derived in part from Ted Tyso's linux code.
Add newer Intel / VIA i386 chipsets.
Correct one S3 chip, add one.
Mostly from Carl Shapiro <css@samsara.dialup.access.net> per PR kern/4169
and kern/4170 (identical).
memory-mapped or i/o-mapped access to the device registers, and always
choose memory-mapped if it is enabled. In particular, do _not_ explictly
disable the space we decide to not use, as this confuses some versions
of Alpha console software (which are arguably buggy because of this
problem).
Also, fix a logic error pointed out by Ross Harvey <ross@teraflop.com>
that would cause memory-mapped access to never be enabled.
pci_map_mem(), with appropriate changes for bus_space.
* Add extra arguments for use by pci_mapreg_*(), and make the functions
static.
* Rewrite pci_mapreg_info() and pci_mapreg_map() as wrappers around
pci_*_find(), using the documented interface.
(currently only CD-ROM drives on i386). The sys/dev/scsipi system provides 2
busses to which devices can attach (scsibus and atapibus). This needed to
change some include files and structure names in the low level scsi drivers.
able to read SXP registers (instead of panicing). Probably have done a bit
of setup overkill- we now alloc some scratch memory for the 2100 that I thought
I would need for the Port database, but so far I haven't needed to retrieve
the port database. Well, early days yet.
drochner