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Nick Hibma 1d7490cce6 In one queue all the TDs (transfer descriptor, packets) for one transfer 
are queued.  Traverse the queues vertically and then horizontally.
This means that TDs for one xfer are transmitted back to back until the
first NAK or error condition. Up to now we transmitted a TD per frame
and transmitted the next TD in the next frame.

The old approach is more fair if you have the end of the queue point at
the beginning of the control transfer queue, but also a lot more overhead
due to the fact that the QHs have to be read more often.

The new approach squirts the packets down the line as fast as possible
for one transfer and then does the next one. In the current situation,
with fairly empty USB buses, this is a more sensible approach. We might
have to revisit the scheduler later however.

It speeds up large transfers (Zip drive, Host-To-Host adapters) on UHCI
by a factor of 5 and makes it as fast as OHCI on the bus.

The next problem to solve is the question why the limit is 300kb/s and
not 1000/kb/s (kb == kilobyte).
1999-12-02 16:43:18 +00:00
..
advansys Move the declaration of panic() from sys/systm.h to sys/param.h. 1999-09-26 18:19:49 +00:00
aha MIN unused, so kill it 1999-10-25 04:28:53 +00:00
ahb $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
aic Bug fix: allow reset device command to complete. 1999-10-28 05:28:00 +00:00
aic7xxx Clear the SELINGO bit after a selection timeout occurs. SELINGO is 1999-09-20 19:04:22 +00:00
amd Properly set the alignment argument to bus_dma_tag_create(). If we 1999-08-16 01:52:21 +00:00
amr Don't print the chipset value; it's not useful. 1999-11-02 03:24:09 +00:00
ar Add explicit null entries for new entrypoints. 1999-12-01 09:34:14 +00:00
ata Better error handeling: 1999-11-29 12:24:51 +00:00
atkbdc Use DEVICE_MODULE() directly instead of DEV_DRIVER_MODULE. psm.c uses 1999-11-08 07:29:23 +00:00
bktr Update to driver 2.05 1999-11-13 14:54:00 +00:00
buslogic * Add struct resource_list* argument to resource_list_alloc and 1999-10-12 21:35:51 +00:00
cardbus Sync to latest cardbusdevs file 1999-11-18 07:22:59 +00:00
ccd Convert various pieces of code to use vn_isdisk() rather than checking 1999-11-22 10:33:55 +00:00
cs Remove NBPF conditionality of bpf calls in most of our network drivers. 1999-09-25 12:06:01 +00:00
cy Introduce ttyread() and ttywrite() which do the canonical thing. 1999-09-28 11:45:31 +00:00
de Remove NBPF conditionality of bpf calls in most of our network drivers. 1999-09-25 12:06:01 +00:00
dec $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
dgb Introduce ttyread() and ttywrite() which do the canonical thing. 1999-09-28 11:45:31 +00:00
dpt Switch over to the new location in sys/dev/dpt. 1999-10-09 03:46:28 +00:00
ed Fix the hang on card eject problem and maybe the hang on suspend 1999-12-01 07:38:54 +00:00
eisa Delete unneeded #include 1999-10-11 14:42:33 +00:00
en remove unused #include, add $FreeBSD$ 1999-10-11 19:14:37 +00:00
ep Fix the hang on card eject problem and maybe the hang on suspend 1999-12-01 07:38:54 +00:00
ex Fix bus_setup_intr(); I changed exintr() to take a pointer to ex_softc 1999-11-03 15:45:14 +00:00
fb Check whether init and term are actually given 1999-10-05 20:32:53 +00:00
fdc Tidy up a few loose ends in the fifo setup code. 1999-11-18 05:15:09 +00:00
fe Make release is now falling over in if_fe.c due to Warner's pccard changes: 1999-10-25 17:04:17 +00:00
fxp Make the fxp driver work on alpha, rather than panic the machine on boot 1999-09-30 19:03:12 +00:00
hea $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
hfa Remove five now unused fields from struct cdevsw. They should never 1999-09-25 18:24:47 +00:00
ic $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
ida Call id_drvinit() from attach, not probe as the OS hasn't necessarily 1999-11-08 07:56:10 +00:00
ie Hid silly unknown board types message behind if (bootverbose). This 1999-10-11 18:53:59 +00:00
iicbus Convert iic to use make_dev() rather than cdevsw_add(). This stops the 1999-11-18 05:43:32 +00:00
isp Clean up stupidity in the isp_handle_other_response function- indexes 1999-11-21 03:18:22 +00:00
joy Oh foo. I got carried away. :-( "joy.h" is used to size an array. 1999-10-11 16:09:00 +00:00
kbd Remove five now unused fields from struct cdevsw. They should never 1999-09-25 18:24:47 +00:00
lnc Remove NBPF conditionality of bpf calls in most of our network drivers. 1999-09-25 12:06:01 +00:00
mc146818 Major changes to the generic device framework for FreeBSD/alpha: 1998-06-14 13:46:10 +00:00
mca resource_list_{alloc,release}() takes a struct resource_list * as its 1999-11-06 07:38:01 +00:00
mcd Remove five now unused fields from struct cdevsw. They should never 1999-09-25 18:24:47 +00:00
md Initialize type correctly. 1999-12-01 10:20:21 +00:00
mii Do some more work on the mxphy pseudo-driver to make it better at media 1999-11-01 17:10:26 +00:00
mlx Correctly compute the block count. In reality, it seems that the 1999-11-02 03:25:24 +00:00
mse - Remove cdevsw_add(). 1999-10-06 13:03:09 +00:00
pccard Sync generated files 1999-11-29 20:54:14 +00:00
pcf Trim some unused #includes 1999-10-11 15:00:09 +00:00
pci Make the pci driver compat shim return a preference for probe 1999-11-30 01:34:46 +00:00
pcic Reconnect probing of the width of the isa bus, calling pcic_attach and 1999-11-29 07:15:33 +00:00
pdq Remove NBPF conditionality of bpf calls in most of our network drivers. 1999-09-25 12:06:01 +00:00
ppbus Print more verbose debugging output 1999-10-05 20:29:00 +00:00
ppc $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
rc Introduce ttyread() and ttywrite() which do the canonical thing. 1999-09-28 11:45:31 +00:00
rp Introduce ttyread() and ttywrite() which do the canonical thing. 1999-09-28 11:45:31 +00:00
scd Remove five now unused fields from struct cdevsw. They should never 1999-09-25 18:24:47 +00:00
sf Minor tweak: the subsystem device ID code for the quad port 62044 card 1999-11-20 18:29:44 +00:00
si Fix some -Wunused warnings 1999-11-18 08:43:58 +00:00
sio Fix the hang on card eject problem and maybe the hang on suspend 1999-12-01 07:38:54 +00:00
sk Call sk_start() at the end of sk_intr() if there's packets in the 1999-09-25 04:50:27 +00:00
smbus Convert smb to use make_dev() rather than cdevsw_add(). This stops the 1999-11-18 05:44:56 +00:00
snp Remove cdevsw_add() - the make_dev() calls are already there. 1999-11-18 06:39:47 +00:00
sound Add ESS1879. 1999-11-30 09:11:06 +00:00
speaker Move isfoo() and friends to the newly created sys/ctype.h. 1999-11-03 17:54:26 +00:00
sr Add explicit null entries for new entrypoints. 1999-12-01 09:34:14 +00:00
streams Rename remove_dev() to destroy_dev(). 1999-11-08 07:44:01 +00:00
sym Update to the 0.12.0-19991127 patch + my header path & doc changes. 1999-11-28 01:35:29 +00:00
syscons - Fail VT switching when the controlling program, such as the 1999-11-28 07:44:11 +00:00
ti As suggested by phk, unconditionalize BPF support in these drivers. Since 1999-09-23 03:32:57 +00:00
tx Added code to enable BusMaster operations. 1999-10-29 09:56:52 +00:00
usb In one queue all the TDs (transfer descriptor, packets) for one transfer 1999-12-02 16:43:18 +00:00
vinum remove PCATCH from a tsleep that isn't checked for (avoid infinite loop). 1999-11-18 08:57:03 +00:00
vn Remove the devsw magic from DEV_MODULE() 1999-11-07 10:01:17 +00:00
vr Change contigmalloc() lower memory bound from 1MB to 0 to improve 1999-09-25 17:29:02 +00:00
vx Remove NBPF conditionality of bpf calls in most of our network drivers. 1999-09-25 12:06:01 +00:00
wi Update the WaveLAN/IEEE driver: 1999-11-25 20:45:49 +00:00
wl Remove NBPF conditionality of bpf calls in most of our network drivers. 1999-09-25 12:06:01 +00:00
xe Disable old PCCARD_MODULE code. 1999-10-29 17:28:09 +00:00