Ralph Becker-Szendy <[email protected]> writes: > Two quick questions about the 6501. First: According to the > documentation, it has USB 2.0 ports. But so does the 5501, and on my > 5501 under OpenBSD, the USB ports run at USB 1.0 speed. Which is a > problem, because I need to occasionally connect a USB disk drive for > backups, and at USB 1.0 speed, that takes ludicrously long. So does > anyone know what chipset on the 6501 provides the USB? And maybe even > whether OpenBSD supports that chipset at 2.0 speed? I'm still running > OBSD 4.6, but new 6501's would be installed with version 4.9 (but I > think the USB stack hasn't changed significantly).
For what it's worth, this is what happens under NetBSD 5.1_STABLE on a 5501: ohci0 at pci0 dev 21 function 0: vendor 0x1022 product 0x2094 (rev. 0x02) ohci0: interrupting at irq 7 ohci0: OHCI version 1.0, legacy support usb0 at ohci0: USB revision 1.0 gcscehci0 at pci0 dev 21 function 1: vendor 0x1022 product 0x2095 (rev. 0x02) gcscehci0: interrupting at irq 7 gcscehci0: EHCI version 1.0 gcscehci0: companion controller, 4 ports each: ohci0 usb1 at gcscehci0: USB revision 2.0 uhub0 at usb0: vendor 0x1022 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 4 ports with 4 removable, self powered uhub1 at usb1: vendor 0x1022 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1 uhub1: 4 ports with 4 removable, self powered umass0 at uhub1 port 1 configuration 1 interface 0 umass0: Western Digital Ext HDD 1021, rev 2.00/20.02, addr 2 umass0: using SCSI over Bulk-Only scsibus0 at umass0: 2 targets, 1 lun per target sd0 at scsibus0 target 0 lun 0: <WD, Ext HDD 1021, 2002> disk fixed I get about 11.7 MB/s (dd from raw disk at 32k blocksize, and 12.6 MB/s at 256k), which is slow for USB2, but definitely the right order of magnitude - I think that drive does about 23 MB/s when connected to an Intel desktop. I suspect it's not so much the USB stack as the chipset glue for ehci attachment. So you can probably either use NetBSD code as a guide or just merge some of it into OpenBSD.
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