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| author | hselasky <hselasky@FreeBSD.org> | 2015-07-16 16:08:40 +0000 |
|---|---|---|
| committer | hselasky <hselasky@FreeBSD.org> | 2015-07-16 16:08:40 +0000 |
| commit | ce589d6074a3a781b953a8175d2a300ce09f9b6e (patch) | |
| tree | af9bbd6e6b799734cea97a2193416be012c12b03 /sys/dev/usb/controller/dwc_otgreg.h | |
| parent | 653d10f967869becd7591f34ae112b8ef544b289 (diff) | |
| download | FreeBSD-src-ce589d6074a3a781b953a8175d2a300ce09f9b6e.zip FreeBSD-src-ce589d6074a3a781b953a8175d2a300ce09f9b6e.tar.gz | |
Optimise the DWC OTG host mode driver's transmit path:
1) Use the TX FIFO empty interrupts to poll the transmit FIFO usage,
instead of using own software counters and waiting for SOF
interrupts. Assume that enough FIFO space is available to execute one
USB OUT transfer of any kind when the TX FIFO is empty.
2) Use the host channel halted event to asynchronously wait for host
channels to be disabled instead of waiting for SOF interrupts. This
results in less turnaround time for re-using host channels and at the
same time increases the performance.
The network transmit performance measured by "iperf" for the "RPi-B v1
2011/12" board, increased from 45MBit/s to 65Mbit/s after applying the
changes above.
No regressions seen using:
- High Speed (BULK, CONTROL, INTERRUPT)
- Full Speed (All transfer types)
- Low Speed (Control and Interrupt)
MFC after: 1 month
Submitted by: Daisuke Aoyama <aoyama@peach.ne.jp>
Diffstat (limited to 'sys/dev/usb/controller/dwc_otgreg.h')
| -rw-r--r-- | sys/dev/usb/controller/dwc_otgreg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/usb/controller/dwc_otgreg.h b/sys/dev/usb/controller/dwc_otgreg.h index 8ab3582..8b9538a 100644 --- a/sys/dev/usb/controller/dwc_otgreg.h +++ b/sys/dev/usb/controller/dwc_otgreg.h @@ -47,6 +47,8 @@ #define DOTG_GGPIO 0x0038 #define DOTG_GUID 0x003C #define DOTG_GSNPSID 0x0040 +#define DOTG_GSNPSID_REV_2_80a 0x4f54280a /* RPi model B/RPi2 */ +#define DOTG_GSNPSID_REV_3_10a 0x4f54310a /* ODROID-C1 */ #define DOTG_GHWCFG1 0x0044 #define DOTG_GHWCFG2 0x0048 #define DOTG_GHWCFG3 0x004C |
