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3f02a957d5
linux/drivers/usb/host
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Enrico Scholz 3f02a957d5 usb: ISP1760: improve pre-fetch timing 
ISP1760 requires a delay of 90ns between programming the address and
reading the data.  Current driver solves this by a mdelay(1) which is
very heavy weighted and slow.  This patch applies the workaround from
the ISP1760 FAQ by using two different banks for PTD and payload data
and using a common wait for them.  This wait is done by an additional
ISP1760 access (whose timing constraints guarantee the 90ns delay).
This improves speed when reading from an USB stick from:

  $ time dd if=/dev/sda of=/dev/zero bs=65536 count=1638
  real    1m 15.43s
  user    0m 0.44s
  sys     0m 39.46s

to

  $ time dd if=/dev/sda of=/dev/zero bs=65536 count=1638
  real    0m 18.53s
  user    0m 0.16s
  sys     0m 12.97s

[bigeasy@linutronix.de: fixed comment formating, moved define into
   header file, obey 80 char rule]

Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-08-13 17:32:53 -07:00
..
ehci-au1xxx.c USB: Au1xxx-usb: suspend/resume support. 2008-07-21 15:16:44 -07:00
ehci-dbg.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ehci-fsl.c USB: EHCI: Reconciling USB register differences on MPC85xx vs MPC83xx 2008-07-21 15:16:45 -07:00
ehci-fsl.h ehci-fsl: fix cache coherency problem on system with large memory 2007-05-23 20:14:15 -07:00
ehci-hcd.c USB: ehci-hcd unlink speedups 2008-07-21 15:16:27 -07:00
ehci-hub.c USB: EHCI: fix remote-wakeup regression 2008-05-29 13:59:04 -07:00
ehci-ixp4xx.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ehci-mem.c Revert "USB: EHCI cpufreq fix" 2007-08-20 23:38:44 -07:00
ehci-orion.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ehci-pci.c USB: EHCI: suppress unwanted error messages 2008-05-29 13:59:03 -07:00
ehci-ppc-of.c USB: EHCI: suppress unwanted error messages 2008-05-29 13:59:03 -07:00
ehci-ppc-soc.c USB: EHCI: suppress unwanted error messages 2008-05-29 13:59:03 -07:00
ehci-ps3.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ehci-q.c list.h: Add list_splice_tail() and list_splice_tail_init() 2008-08-07 09:49:42 -04:00
ehci-sched.c USB: EHCI: fix bug in Iso scheduling 2008-05-29 13:59:04 -07:00
ehci.h USB: ehci-hcd unlink speedups 2008-07-21 15:16:27 -07:00
isp116x-hcd.c Rename WARN() to WARNING() to clear the namespace 2008-07-25 10:53:29 -07:00
isp116x.h Rename WARN() to WARNING() to clear the namespace 2008-07-25 10:53:29 -07:00
isp1760-hcd.c usb: ISP1760: improve pre-fetch timing 2008-08-13 17:32:53 -07:00
isp1760-hcd.h usb: ISP1760: improve pre-fetch timing 2008-08-13 17:32:53 -07:00
isp1760-if.c USB: isp1760: Support board-specific hardware configurations 2008-07-21 15:16:33 -07:00
Kconfig usb: r8a66597-hcd: Add support for SH7723 USB host 2008-06-09 16:04:12 +09:00
Makefile USB: ISP1760 HCD driver 2008-05-02 10:25:50 -07:00
ohci-at91.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-au1xxx.c USB: Au1xxx-usb: suspend/resume support. 2008-07-21 15:16:44 -07:00
ohci-dbg.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ohci-ep93xx.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-hcd.c USB: ohci: make distrust_firmware a quirk 2008-08-13 17:32:52 -07:00
ohci-hub.c USB: Hook start_hnp into ohci struct 2008-08-13 17:32:52 -07:00
ohci-lh7a404.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-mem.c USB: OHCI handles more ZFMicro quirks 2007-10-12 14:54:59 -07:00
ohci-omap.c USB: Hook start_hnp into ohci struct 2008-08-13 17:32:52 -07:00
ohci-pci.c Revert "USB: don't explicitly reenable root-hub status interrupts" 2008-07-06 10:27:25 -07:00
ohci-pnx4008.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-pnx8550.c Revert "USB: don't explicitly reenable root-hub status interrupts" 2008-07-06 10:27:25 -07:00
ohci-ppc-of.c USB: ohci-ppc-of: use linux/of_platform.h instead of asm 2008-07-21 15:16:22 -07:00
ohci-ppc-soc.c Revert "USB: don't explicitly reenable root-hub status interrupts" 2008-07-06 10:27:25 -07:00
ohci-ps3.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ohci-pxa27x.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-q.c USB: ohci_hcd hang: submit vs. rmmod race 2008-07-21 15:16:25 -07:00
ohci-s3c2410.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-sa1111.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ohci-sh.c Revert "USB: don't explicitly reenable root-hub status interrupts" 2008-07-06 10:27:25 -07:00
ohci-sm501.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ohci-ssb.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
ohci.h USB: Hook start_hnp into ohci struct 2008-08-13 17:32:52 -07:00
pci-quirks.c USB: replace remaining __FUNCTION__ occurrences 2008-04-24 21:16:55 -07:00
pci-quirks.h
r8a66597-hcd.c usb: r8a66597-hcd: fix iinterval for Full/Low speed device 2008-07-21 15:16:35 -07:00
r8a66597.h USB: r8a66597-hcd: Add support for SH7366 USB host 2008-04-24 21:16:49 -07:00
sl811_cs.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
sl811-hcd.c Rename WARN() to WARNING() to clear the namespace 2008-07-25 10:53:29 -07:00
sl811.h Rename WARN() to WARNING() to clear the namespace 2008-07-25 10:53:29 -07:00
u132-hcd.c USB: usb dev_name() instead of dev->bus_id 2008-07-21 15:15:46 -07:00
uhci-debug.c USB: add urb->unlinked field 2007-10-12 14:55:19 -07:00
uhci-hcd.c USB: UHCI: disable remote wakeup when it's not needed 2008-05-02 10:25:57 -07:00
uhci-hcd.h USB: UHCI: disable remote wakeup when it's not needed 2008-05-02 10:25:57 -07:00
uhci-hub.c USB: uhci: mark root_hub_hub_des[] as const 2008-07-21 15:16:30 -07:00
uhci-q.c USB: replace remaining __FUNCTION__ occurrences 2008-04-24 21:16:55 -07:00