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Rafal Jaworowski 5713ef0ced Eliminate BUS_DMA <-> cache incoherencies in USB transfers. 
With write-allocate cache we get into the following scenario:

1. data has been updated in the memory by the USB HC, but
2. D-cache holds an un-flushed value of it
3. when affected cache line is being replaced, the old (un-flushed) value is
flushed and overwrites the newly arrived

This is possible due to how write-allocate works with virtual caches (ARM for
example).

In case of USB transfers it leads to fatal tags discrepancies in umass(4)
operation, which look like the following:

umass0: Invalid CSW: tag 1 should be 2
(probe0:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe0:umass-sim0:0:0:0): Retrying Command
umass0: Invalid CSW: tag 1 should be 3
(probe0:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe0:umass-sim0:0:0:0): Retrying Command
umass0: Invalid CSW: tag 1 should be 4
(probe0:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe0:umass-sim0:0:0:0): Retrying Command
umass0: Invalid CSW: tag 1 should be 5
(probe0:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe0:umass-sim0:0:0:0): Retrying Command
umass0: Invalid CSW: tag 1 should be 6
(probe0:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe0:umass-sim0:0:0:0): error 5
(probe0:umass-sim0:0:0:0): Retries Exausted

To eliminate this, a BUS_DMASYNC_PREREAD sync operation is required in
usbd_start_transfer().

Credits for nailing this down go to Grzegorz Bernacki gjb AT semihalf DOT com.

Reviewed by:	imp
Approved by:	cognet (mentor)
2008-02-12 11:03:29 +00:00
..
aac Avoid holding the aac_io_lock over copyout. 2007-12-20 21:13:58 +00:00
acpi_support Don't attach to the "IBM0057" ID. This ID is used by IBM machines for 2007-10-25 17:30:18 +00:00
acpica Return errno value rather than boolean in this context. 2008-01-28 01:57:48 +00:00
adlink Set D_NEEDGIANT. 2007-08-04 17:43:11 +00:00
advansys Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
agp Add the 845M GMCH controller. 2007-11-26 18:17:07 +00:00
aha Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
ahb Fix a compile error from the last change. 2007-06-17 15:21:09 +00:00
aic Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
aic7xxx fix up some code for older systems changed by accident in the last commit 2007-10-21 04:11:13 +00:00
amd Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
amr Remove an errant definition for AMR_CONFIG_ENQ3_SOLICITED NOTIFY that was 2008-02-06 14:26:31 +00:00
an Style changes from avatar. 2008-01-18 16:34:18 +00:00
ar Don't call bus_deactivate_resource() explicitly before calling 2007-03-21 03:38:37 +00:00
arcmsr Fix an incorrect FreeBSD version test. 2007-12-09 19:24:27 +00:00
arl
asmc Move ASMC_FAN_FUNCS in the Macmini structure declaration one line up 2007-11-22 23:38:24 +00:00
asr Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
ata If the disk reports that it support the Compact Flash Association command 2008-01-02 20:33:54 +00:00
ath promote ath_defrag to m_collapse (and retire private+unused 2008-01-17 21:25:09 +00:00
atkbdc Remove explicit calls to keyboard methods with their respective variants 2007-12-29 21:55:25 +00:00
auxio
awi o add 802.11 state machine states for DFS and client-side power save 2007-09-05 21:31:32 +00:00
bce Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
bfe Fix link state handling in bfe(4). 2008-01-29 02:15:11 +00:00
bge Add a flag for Ethernet@WireSpeed capability and correct chip revisions. 2008-01-18 22:09:50 +00:00
bktr Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
buslogic Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
cardbus Make the PCI code aware of PCI domains (aka PCI segments) so we can 2007-09-30 11:05:18 +00:00
ce First in a series of changes to remove the now-unused Giant compatibility 2007-07-27 11:59:57 +00:00
ciss Add `hw.ciss.nop_message_heartbeat' tunable (default disabled) for 2008-02-10 06:21:52 +00:00
cm Spelling fix for interupt -> interrupt 2007-10-12 06:03:46 +00:00
cnw
coretemp Disable the check for errata AE18. On MacBooks (1,1 version) there's 2008-01-10 16:09:22 +00:00
cp First in a series of changes to remove the now-unused Giant compatibility 2007-07-27 11:59:57 +00:00
cpufreq
cs
ct
ctau Spelling fix for interupt -> interrupt 2007-10-12 06:03:46 +00:00
cx Spelling fix for interupt -> interrupt 2007-10-12 06:03:46 +00:00
cxgb Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
cy
dc Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
dcons Add a new 'why' argument to kdb_enter(), and a set of constants to use 2007-12-25 17:52:02 +00:00
de The maxsegsz of a dma tag created in de(4) is TULIP_DATA_PER_DESC bytes. 2007-06-07 00:28:47 +00:00
digi
dpt Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
drm Dont accidentally remove a filesocket which is still in use. This gives 2008-01-16 13:54:40 +00:00
ed Add Winbond W89C940F to the list. Also, stub in some entries for two 2007-12-31 03:29:02 +00:00
eisa
em Add COHERENT to descriptor mem allocation for the 2007-11-28 23:04:11 +00:00
en Where I previously removed calls to kdb_enter(), now remove include of 2007-05-29 11:28:28 +00:00
ep
esp The ESP driver isn't really MPSAFE, so don't mark it that it is. 2007-11-11 14:45:35 +00:00
ex s/destory/destroy/ (except for the code in contrib/). 2007-04-16 12:31:35 +00:00
exca - Fix exca_(io|mem)_map() to return proper errno values. 2007-03-23 17:15:07 +00:00
fatm
fb Replace explicit calls to video methods with their respective variants 2007-12-29 23:26:59 +00:00
fdc The wakeup() line from the rev. 1.319 is wrong and reintroduces 2008-01-11 16:50:52 +00:00
fe
firewire Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
flash Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
fxp Remove the volatile qualifier to apply to fxp_miibus_readreg(). 2007-05-30 03:46:04 +00:00
gem - Retire npe_defrag(), gem_defrag(), msk_defrag(), nfe_defrag(), and 2008-01-17 23:37:47 +00:00
harp
hatm Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
hfa
hifn Overhaul driver/subsystem api's: 2007-03-21 03:42:51 +00:00
hme Remove invalid BUS_DMA_ALLOCNOW when creating a tag which is used for 2007-05-01 11:50:11 +00:00
hptiop Update the hptiop driver to version 1.3. This adds support for the 4xxx 2008-02-03 16:07:12 +00:00
hptmv Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
hptrr Fix a symbol conflict between hptrr and hptmv 2008-02-06 05:33:17 +00:00
hwpmc VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in 2008-01-13 14:44:15 +00:00
ic
ichsmb Add the Intel 82801FB (ICH6) SMBus controller and the 2007-11-26 19:54:54 +00:00
ichwd Add support for ICH8M. 2008-01-07 09:46:39 +00:00
ida
idt Spelling fix for interupt -> interrupt 2007-10-12 06:03:46 +00:00
ie
ieee488
if_ndis Use pause(9) instead of a tsleep() on a stack variable. 2008-01-17 20:11:58 +00:00
iicbus Don't use spinlocks here. The iicbus transactions can take a long 2007-04-17 05:48:35 +00:00
iir Fix a buffer overflow in the processing of various SCSI commands. This likely 2008-01-09 20:02:56 +00:00
io
ipmi Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
ips
ipw Plug two potential (root-only, local) information leaks. buf is not 2007-12-05 19:32:07 +00:00
iscsi/initiator Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
isp Add missing locking for SBus controllers. 2007-11-05 11:22:18 +00:00
ispfw
iwi Plug two potential (root-only, local) information leaks. buf is not 2007-12-05 19:32:07 +00:00
ixgb
ixgbe This is an update to the new Intel 10G 82598 driver. 2007-09-04 02:31:35 +00:00
joy
kbd Remove explicit calls to keyboard methods with their respective variants 2007-12-29 21:55:25 +00:00
kbdmux Remove explicit calls to keyboard methods with their respective variants 2007-12-29 21:55:25 +00:00
le Correct the comments in am7990_intr() and am79900_intr(); it's not 2007-12-30 00:23:38 +00:00
led Make it possible to specify an initial state for the LED. 2007-04-23 12:42:15 +00:00
lge Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
lmc Universally adopt most conventional spelling of acquire. 2007-05-27 20:50:23 +00:00
mc146818 Export mc146818_def_{read,write}() so the front-end can make use 2007-06-16 23:10:00 +00:00
mca
mcd
md VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in 2008-01-13 14:44:15 +00:00
mem
mfi Fix some bugs in dealing with DCMD'd without data. MegaCli was sending 2008-02-02 17:29:28 +00:00
mii - Fix a typo in a comment. 2008-01-27 01:30:02 +00:00
mk48txx Revisit the watchdogs: Resetting the error to EINVAL after failing to set the 2007-03-27 21:03:37 +00:00
mlx
mly Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
mmc Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
mpt Ever since the module registration system was introduced to this driver, 2007-11-03 17:33:41 +00:00
mse
msk Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
mxge Only reset driver state when a hardware error is detected. 2008-01-28 13:20:51 +00:00
my Spelling fix for interupt -> interrupt 2007-10-12 06:03:46 +00:00
ncv
nfe Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
nge Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
nmdm Call ttyld_close() in nmdmclose() to ensure that nmdm(4) 2007-08-01 21:38:11 +00:00
nsp
null
nve Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
nvram Split /dev/nvram driver out of isa/clock.c for i386 and amd64. I have not 2007-10-26 03:23:54 +00:00
nxge Merge Neterion if_nxge driver version 2.0.9.11230 with the following 2007-10-29 14:19:32 +00:00
ofw Add a new 'why' argument to kdb_enter(), and a set of constants to use 2007-12-25 17:52:02 +00:00
patm Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
pbio
pccard Bring in some new Sierra Wireless drivers running under pccard. 2007-10-12 08:26:15 +00:00
pccbb Rename the kthread_xxx (e.g. kthread_create()) calls 2007-10-20 23:23:23 +00:00
pcf Don't call bus_deactivate_resource() explicitly before calling 2007-03-21 03:38:37 +00:00
pci Relax the check for a PCI-express chipset by assuming the system is a 2008-02-01 20:31:09 +00:00
pdq Fix preprocessor code to check for a symbol being defined prior to checking 2007-06-08 01:49:04 +00:00
powermac_nvram Redefine bus_space_tag_t on PowerPC from a 32-bit integral to 2007-12-19 18:00:50 +00:00
ppbus Work around problems with the ppbus(4)'s interesting way of managing 2008-01-10 23:43:47 +00:00
ppc Don't call bus_deactivate_resource() explicitly before calling 2007-03-21 03:38:37 +00:00
pst
puc o Add Moxa Technologies CP-104EL PCI Express 4 port Serial card. 2008-01-12 19:14:29 +00:00
ral Various bug fixes for 2560 parts of ral(4): 2008-02-03 11:47:38 +00:00
random Correct a random value disclosure in random(4). 2007-11-29 16:06:12 +00:00
ray add defs just removed from ieee80211.h 2007-09-05 21:25:58 +00:00
rc
re - Retire npe_defrag(), gem_defrag(), msk_defrag(), nfe_defrag(), and 2008-01-17 23:37:47 +00:00
rndtest
rp Initialize DWBuf[3]. 2007-07-05 06:51:49 +00:00
safe bandaid crash as I have no time to research the issue and the driver 2007-11-03 19:10:14 +00:00
sbni Quiet framelen uninitialized warning. I think it was a false alarm. 2007-07-05 07:46:33 +00:00
sbsh Propagae volatile qualifier. 2007-06-08 01:54:22 +00:00
scc Add method enabled() to the SCC interface. This method can be used 2007-03-28 18:05:17 +00:00
scd
sf Fix build. 2008-01-21 09:51:28 +00:00
si Based in info gleaned from the web and other drivers (including the Linux 2007-12-01 20:39:47 +00:00
sio Add a new 'why' argument to kdb_enter(), and a set of constants to use 2007-12-25 17:52:02 +00:00
sk Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
smbus
sn
snc
snp Move the check for the snp device being already attached after the 2007-12-24 13:47:16 +00:00
sound Limit total hardware playback channels to just 1. The reliability of 2007-12-14 02:16:26 +00:00
speaker Now that tone & delay times are correct (independent of hz), adjust 2007-06-04 09:27:13 +00:00
spibus
sr Don't call bus_deactivate_resource() explicitly before calling 2007-03-21 03:38:37 +00:00
stg
stge Use m_collapse(9) to collapse mbuf chains instead of relying on 2008-01-18 08:32:08 +00:00
streams Make ftruncate a 'struct file' operation rather than a vnode operation. 2008-01-07 20:05:19 +00:00
sym Fix Symbios driver on amd64: Since amd64 has 64 bit pointers but the same 2007-07-20 23:02:01 +00:00
syscons Do not dereference NULL scp in the case the screen is not opened. 2008-01-24 15:37:48 +00:00
tdfx
ti Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
trm Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
twa Deferred interrupts don't work yet, disable them. 2007-10-12 16:51:22 +00:00
twe Add missing \n. 2008-02-12 08:58:26 +00:00
tx
txp Read MII_ANAR register and get common denominator ability. 2007-11-16 10:32:10 +00:00
uart Add a new 'why' argument to kdb_enter(), and a set of constants to use 2007-12-25 17:52:02 +00:00
ubsec Overhaul driver/subsystem api's: 2007-03-21 03:42:51 +00:00
usb Eliminate BUS_DMA <-> cache incoherencies in USB transfers. 2008-02-12 11:03:29 +00:00
utopia Fix a use-after-free. 2007-12-05 19:32:59 +00:00
vge Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
vkbd Remove explicit calls to keyboard methods with their respective variants 2007-12-29 21:55:25 +00:00
vr Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
vx Fix function prototype for device_shutdown method. 2007-11-22 02:45:00 +00:00
watchdog Revisit the watchdogs: Resetting the error to EINVAL after failing to set the 2007-03-27 21:03:37 +00:00
wds Prepare for future integration between CAM and newbus. xpt_bus_register 2007-06-17 05:55:54 +00:00
wi Make wi_set_channel() actually change the channel in hardware so that hostap 2007-09-16 20:02:29 +00:00
wl Don't call bus_deactivate_resource() explicitly before calling 2007-03-21 03:38:37 +00:00
wpi Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
xe