Re: NEC HCD interrupt message limitation

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I have gathered data from /sys/kernel/debug/ehci and it looks interesting.
Does this tell us anything useful?
Does it still look like a hardware bug?

==========================================================================

Start condition; no RUs nor hubs plugged in:

Intel HCD:

[recsys@ws2 0000:00:1d.7]$ cat periodic
size = 1024

[recsys@ws2 0000:00:1d.7]$ cat registers
bus pci, device 0000:00:1d.7
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 01000001 linux
SMI sts/enable 0x20080000
structural params 0x00103206
capability params 0x00016871
status 2008 Recl FLR
command 010001 (park)=0 ithresh=1 period=1024 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 1537
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001000 POWER sig=se0
port 4 status 001000 POWER sig=se0
port 5 status 001000 POWER sig=se0
port 6 status 001000 POWER sig=se0
irq normal 17565 err 141 reclaim 8945 (lost 0)
complete 18835 unlink 217


NEC HCD:

[recsys@ws2 0000:05:05.2]$ cat periodic
size = 256

[recsys@ws2 0000:05:05.2]$ cat registers
bus pci, device 0000:05:05.2
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 00000001
SMI sts/enable 0xc0080000
structural params 0x00002395
capability params 0x0000e806
status 2008 Recl FLR
command 010009 (park)=0 ithresh=1 period=256 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 37fb
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001000 POWER sig=se0
port 4 status 001000 POWER sig=se0
port 5 status 001000 POWER sig=se0
irq normal 10481 err 0 reclaim 7759 (lost 0)
complete 13595 unlink 157

==========================================================================

after 36 RUs and 6 hubs plugged in:

Intel HCD:

[recsys@ws2 0000:00:1d.7]$ cat periodic
size = 1024
 255:  qh256-0001/f44cc080 (h18 ep1in [1/0] q1 p1) qh256-0001/f44cc400 (h31 ep1in [1/0] q1 p1) qh256-0001/f44cc680 (h32 ep1in [1/0] q1 p1) qh256-0001/f44ccc00 (h57 ep1in [1/0] q1 p1) qh256-0001/f44ccd00 (h58 ep1in [1/0] q1 p1) qh256-0001/f4415d80 (h83 ep1in [1/0] q1 p1)
 511:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80
 767:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80
1023:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80

[recsys@ws2 0000:00:1d.7]$ cat registers
bus pci, device 0000:00:1d.7
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 01000001 linux
SMI sts/enable 0x20080000
structural params 0x00103206
capability params 0x00016871
status 6008 Periodic Recl FLR
command 010011 (park)=0 ithresh=1 Periodic period=1024 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 0ab8
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
port 6 status 001005 POWER sig=se0 PE CONNECT
irq normal 19673 err 141 reclaim 9848 (lost 0)
complete 20975 unlink 217


NEC HCD:

[recsys@ws2 0000:05:05.2]$ cat periodic
size = 256
 255:  qh256-0001/f45ae080 (h104 ep1in [1/0] q1 p1) qh256-0001/f45ae400 (h117 ep1in [1/0] q1 p1) qh256-0001/f45aeb00 (h118 ep1in [1/0] q1 p1) qh256-0001/f45aec00 (h17 ep1in [1/0] q1 p1) qh256-0001/f45aed00 (h18 ep1in [1/0] q1 p1) qh256-0001/f440ee80 (h43 ep1in [1/0] q1 p1)

[recsys@ws2 0000:05:05.2]$ cat registers
bus pci, device 0000:05:05.2
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 00000001
SMI sts/enable 0xc0080000
structural params 0x00002395
capability params 0x0000e806
status 6008 Periodic Recl FLR
command 010019 (park)=0 ithresh=1 Periodic period=256 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 0967
port 1 status 001000 POWER sig=se0
port 2 status 001005 POWER sig=se0 PE CONNECT
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
irq normal 12599 err 0 reclaim 8679 (lost 0)
complete 15748 unlink 157

==========================================================================

after insmod ruusb driver (36 interrupt URBs submitted):

Intel HCD:

[recsys@ws2 0000:00:1d.7]$ cat periodic
size = 1024
 255:  qh256-0001/f44cc080 (h18 ep1in [1/0] q1 p1) qh256-0001/f44cc400 (h31 ep1in [1/0] q1 p1) qh256-0001/f44cc680 (h32 ep1in [1/0] q1 p1) qh256-0001/f44ccc00 (h57 ep1in [1/0] q1 p1) qh256-0001/f44ccd00 (h58 ep1in [1/0] q1 p1) qh256-0001/f4415d80 (h83 ep1in [1/0] q1 p1) qh256-0001/f4415c00 (h25 ep1in [2/0] q1 p64) qh256-0001/f4415600 (h26 ep1in [2/0] q1 p64) qh256-0001/f4415680 (h27 ep1in [2/0] q1 p64) qh256-0001/f4415a00 (h28 ep1in [2/0] q1 p64) qh256-0001/f4415a80 (h29 ep1in [2/0] q1 p64) qh256-0001/f4415800 (h30 ep1in [2/0] q1 p64) qh256-0001/f4415f00 (h45 ep1in [2/0] q1 p64) qh256-0001/f4415c80 (h46 ep1in [2/0] q1 p64) qh256-0001/f4415e80 (h47 ep1in [2/0] q1 p64) qh256-0001/f4415e00 (h48 ep1in [2/0] q1 p64) qh256-0001/f4415980 (h49 ep1in [2/0] q1 p64) qh256-0001/f4415900 (h50 ep1in [2/0] q1 p64) qh256-0001/f4415480 (h51 ep1in [2/0] q1 p64) qh256-0001/f4415380 (h52 ep1in [2/0] q1 p64) qh256-0001/f6af3e80 (h53 ep1in [2/0] q1 p64) qh256-0001/f6af3d00 (h54 ep1in [2/0] q1 p64) qh256-0001/f6af3b80 (h55 ep1in [2/0] q1 p64) qh256-0001/f6af3b00 (h56 ep1in [2/0] q1 p64) qh256-0001/f6af3180 (h71 ep1in [2/0] q1 p64) qh256-0001/f6af3100 (h72 ep1in [2/0] q1 p64) qh256-0001/f6af3c80 (h73 ep1in [2/0] q1 p64) qh256-0001/f6af3d80 (h74 ep1in [2/0] q1 p64) qh256-0001/f6af3a80 (h75 ep1in [2/0] q1 p64) qh256-0001/f6af3080 (h76 ep1in [2/0] q1 p64) qh256-0001/f6af3000 (h77 ep1in [2/0] q1 p64) qh256-0001/f6af3280 (h78 ep1in [2/0] q1 p64) qh256-0001/f6af3200 (h79 ep1in [2/0] q1 p64) qh256-0001/f6af3c00 (h80 ep1in [2/0] q1 p64) qh256-0001/f6af3480 (h81 ep1in [2/0] q1 p64) qh256-0001/f6af3400 (h82 ep1in [2/0] q1 p64) qh256-0001/f6af3700 (h90 ep1in [2/0] q1 p64) qh256-0001/f6af3980 (h91 ep1in [2/0] q1 p64) qh256-0001/f6af3900 (h92 ep1in [2/0] q1 p64) qh256-0001/f6af3680 (h93 ep1in [2/0] q1 p64) qh256-0001/f6af3600 (h94 ep1in [2/0] q1 p64) qh256-0001/f6af3f00 (h95 ep1in [2/0] q1 p64)
 511:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80 ... qh256-0001/f4415c00 ... qh256-0001/f4415600 ... qh256-0001/f4415680 ... qh256-0001/f4415a00 ... qh256-0001/f4415a80 ... qh256-0001/f4415800 ... qh256-0001/f4415f00 ... qh256-0001/f4415c80 ... qh256-0001/f4415e80 ... qh256-0001/f4415e00 ... qh256-0001/f4415980 ... qh256-0001/f4415900 ... qh256-0001/f4415480 ... qh256-0001/f4415380 ... qh256-0001/f6af3e80 ... qh256-0001/f6af3d00 ... qh256-0001/f6af3b80 ... qh256-0001/f6af3b00 ... qh256-0001/f6af3180 ... qh256-0001/f6af3100 ... qh256-0001/f6af3c80 ... qh256-0001/f6af3d80 ... qh256-0001/f6af3a80 ... qh256-0001/f6af3080 ... qh256-0001/f6af3000 ... qh256-0001/f6af3280 ... qh256-0001/f6af3200 ... qh256-0001/f6af3c00 ... qh256-0001/f6af3480 ... qh256-0001/f6af3400 ... qh256-0001/f6af3700 ... qh256-0001/f6af3980 ... qh256-0001/f6af3900 ... qh256-0001/f6af3680 ... qh256-0001/f6af3600 ... qh256-0001/f6af3f00
 767:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80 ... qh256-0001/f4415c00 ... qh256-0001/f4415600 ... qh256-0001/f4415680 ... qh256-0001/f4415a00 ... qh256-0001/f4415a80 ... qh256-0001/f4415800 ... qh256-0001/f4415f00 ... qh256-0001/f4415c80 ... qh256-0001/f4415e80 ... qh256-0001/f4415e00 ... qh256-0001/f4415980 ... qh256-0001/f4415900 ... qh256-0001/f4415480 ... qh256-0001/f4415380 ... qh256-0001/f6af3e80 ... qh256-0001/f6af3d00 ... qh256-0001/f6af3b80 ... qh256-0001/f6af3b00 ... qh256-0001/f6af3180 ... qh256-0001/f6af3100 ... qh256-0001/f6af3c80 ... qh256-0001/f6af3d80 ... qh256-0001/f6af3a80 ... qh256-0001/f6af3080 ... qh256-0001/f6af3000 ... qh256-0001/f6af3280 ... qh256-0001/f6af3200 ... qh256-0001/f6af3c00 ... qh256-0001/f6af3480 ... qh256-0001/f6af3400 ... qh256-0001/f6af3700 ... qh256-0001/f6af3980 ... qh256-0001/f6af3900 ... qh256-0001/f6af3680 ... qh256-0001/f6af3600 ... qh256-0001/f6af3f00
1023:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80 ... qh256-0001/f4415c00 ... qh256-0001/f4415600 ... qh256-0001/f4415680 ... qh256-0001/f4415a00 ... qh256-0001/f4415a80 ... qh256-0001/f4415800 ... qh256-0001/f4415f00 ... qh256-0001/f4415c80 ... qh256-0001/f4415e80 ... qh256-0001/f4415e00 ... qh256-0001/f4415980 ... qh256-0001/f4415900 ... qh256-0001/f4415480 ... qh256-0001/f4415380 ... qh256-0001/f6af3e80 ... qh256-0001/f6af3d00 ... qh256-0001/f6af3b80 ... qh256-0001/f6af3b00 ... qh256-0001/f6af3180 ... qh256-0001/f6af3100 ... qh256-0001/f6af3c80 ... qh256-0001/f6af3d80 ... qh256-0001/f6af3a80 ... qh256-0001/f6af3080 ... qh256-0001/f6af3000 ... qh256-0001/f6af3280 ... qh256-0001/f6af3200 ... qh256-0001/f6af3c00 ... qh256-0001/f6af3480 ... qh256-0001/f6af3400 ... qh256-0001/f6af3700 ... qh256-0001/f6af3980 ... qh256-0001/f6af3900 ... qh256-0001/f6af3680 ... qh256-0001/f6af3600 ... qh256-0001/f6af3f00

[recsys@ws2 0000:00:1d.7]$ cat registers
bus pci, device 0000:00:1d.7
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 01000001 linux
SMI sts/enable 0x20080000
structural params 0x00103206
capability params 0x00016871
status 6008 Periodic Recl FLR
command 010011 (park)=0 ithresh=1 Periodic period=1024 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 3939
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
port 6 status 001005 POWER sig=se0 PE CONNECT
irq normal 19709 err 141 reclaim 9884 (lost 0)
complete 21011 unlink 217


NEC HCD:

[recsys@ws2 0000:05:05.2]$ cat periodic
size = 256
 255:  qh256-0001/f45ae080 (h104 ep1in [1/0] q1 p1) qh256-0001/f45ae400 (h117 ep1in [1/0] q1 p1) qh256-0001/f45aeb00 (h118 ep1in [1/0] q1 p1) qh256-0001/f45aec00 (h17 ep1in [1/0] q1 p1) qh256-0001/f45aed00 (h18 ep1in [1/0] q1 p1) qh256-0001/f440ee80 (h43 ep1in [1/0] q1 p1) qh256-0001/f440e580 (h111 ep1in [2/0] q1 p64) qh256-0001/f440e600 (h112 ep1in [2/0] q1 p64) qh256-0001/f440e000 (h113 ep1in [2/0] q1 p64) qh256-0001/f440e400 (h114 ep1in [2/0] q1 p64) qh256-0001/f440e680 (h115 ep1in [2/0] q1 p64) qh256-0001/f440e700 (h116 ep1in [2/0] q1 p64) qh256-0001/f440e380 (h5 ep1in [2/0] q1 p64) qh256-0001/f440e500 (h6 ep1in [2/0] q1 p64) qh256-0001/f440e300 (h7 ep1in [2/0] q1 p64) qh256-0001/f440e280 (h8 ep1in [2/0] q1 p64) qh256-0001/f440e480 (h9 ep1in [2/0] q1 p64) qh256-0001/f440e180 (h10 ep1in [2/0] q1 p64) qh256-0001/f440e200 (h11 ep1in [2/0] q1 p64) qh256-0001/f440e880 (h12 ep1in [2/0] q1 p64) qh256-0001/f5708900 (h13 ep1in [2/0] q1 p64) qh256-0001/f5708880 (h14 ep1in [2/0] q1 p64) qh256-0001/f5708800 (h15 ep1in [2/0] q1 p64) qh256-0001/f5708e80 (h16 ep1in [2/0] q1 p64) qh256-0001/f5708e00 (h31 ep1in [2/0] q1 p64) qh256-0001/f5708d80 (h32 ep1in [2/0] q1 p64) qh256-0001/f5708d00 (h33 ep1in [2/0] q1 p64) qh256-0001/f5708c80 (h34 ep1in [2/0] q1 p64) qh256-0001/f5708c00 (h35 ep1in [2/0] q1 p64) qh256-0001/f5708400 (h36 ep1in [2/0] q1 p64) qh256-0001/f5708100 (h37 ep1in [2/0] q1 p64) qh256-0001/f5708080 (h38 ep1in [2/0] q1 p64) qh256-0001/f5708000 (h39 ep1in [2/0] q1 p64) qh256-0001/f5708180 (h40 ep1in [2/0] q1 p64) qh256-0001/f5708680 (h41 ep1in [2/0] q1 p64) qh256-0001/f5708600 (h42 ep1in [2/0] q1 p64) qh256-0001/f5708a80 (h50 ep1in [2/0] q1 p64) qh256-0001/f5708b80 (h51 ep1in [2/0] q1 p64) qh256-0001/f5708380 (h52 ep1in [2/0] q1 p64) qh256-0001/f5708300 (h53 ep1in [2/0] q1 p64) qh256-0001/f5708280 (h54 ep1in [2/0] q1 p64) qh256-0001/f5708200 (h55 ep1in [2/0] q1 p64)

[recsys@ws2 0000:05:05.2]$ cat registers
bus pci, device 0000:05:05.2
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 00000001
SMI sts/enable 0xc0080000
structural params 0x00002395
capability params 0x0000e806
status 6008 Periodic Recl FLR
command 010019 (park)=0 ithresh=1 Periodic period=256 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 2a5f
port 1 status 001000 POWER sig=se0
port 2 status 001005 POWER sig=se0 PE CONNECT
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
irq normal 12635 err 0 reclaim 8715 (lost 0)
complete 15784 unlink 157

==========================================================================

after self test all RUs (expect 36 interrupt tranfers):

Intel HCD (received 36 interrupt transfers and re-submitted 36 interrupt URBs):

[recsys@ws2 0000:00:1d.7]$ cat periodic
size = 1024
 255:  qh256-0001/f44cc080 (h18 ep1in [1/0] q1 p1) qh256-0001/f44cc400 (h31 ep1in [1/0] q1 p1) qh256-0001/f44cc680 (h32 ep1in [1/0] q1 p1) qh256-0001/f44ccc00 (h57 ep1in [1/0] q1 p1) qh256-0001/f44ccd00 (h58 ep1in [1/0] q1 p1) qh256-0001/f4415d80 (h83 ep1in [1/0] q1 p1) qh256-0001/f4415c00 (h25 ep1in [2/0] q1 p64) qh256-0001/f4415600 (h26 ep1in [2/0] q1 p64) qh256-0001/f4415680 (h27 ep1in [2/0] q1 p64) qh256-0001/f4415a00 (h28 ep1in [2/0] q1 p64) qh256-0001/f4415a80 (h29 ep1in [2/0] q1 p64) qh256-0001/f4415800 (h30 ep1in [2/0] q1 p64) qh256-0001/f4415f00 (h45 ep1in [2/0] q1 p64) qh256-0001/f4415c80 (h46 ep1in [2/0] q1 p64) qh256-0001/f4415e80 (h47 ep1in [2/0] q1 p64) qh256-0001/f4415e00 (h48 ep1in [2/0] q1 p64) qh256-0001/f4415980 (h49 ep1in [2/0] q1 p64) qh256-0001/f4415900 (h50 ep1in [2/0] q1 p64) qh256-0001/f4415480 (h51 ep1in [2/0] q1 p64) qh256-0001/f4415380 (h52 ep1in [2/0] q1 p64) qh256-0001/f6af3e80 (h53 ep1in [2/0] q1 p64) qh256-0001/f6af3d00 (h54 ep1in [2/0] q1 p64) qh256-0001/f6af3b80 (h55 ep1in [2/0] q1 p64) qh256-0001/f6af3b00 (h56 ep1in [2/0] q1 p64) qh256-0001/f6af3180 (h71 ep1in [2/0] q1 p64) qh256-0001/f6af3100 (h72 ep1in [2/0] q1 p64) qh256-0001/f6af3c80 (h73 ep1in [2/0] q1 p64) qh256-0001/f6af3d80 (h74 ep1in [2/0] q1 p64) qh256-0001/f6af3a80 (h75 ep1in [2/0] q1 p64) qh256-0001/f6af3080 (h76 ep1in [2/0] q1 p64) qh256-0001/f6af3000 (h77 ep1in [2/0] q1 p64) qh256-0001/f6af3280 (h78 ep1in [2/0] q1 p64) qh256-0001/f6af3200 (h79 ep1in [2/0] q1 p64) qh256-0001/f6af3c00 (h80 ep1in [2/0] q1 p64) qh256-0001/f6af3480 (h81 ep1in [2/0] q1 p64) qh256-0001/f6af3400 (h82 ep1in [2/0] q1 p64) qh256-0001/f6af3700 (h90 ep1in [2/0] q1 p64) qh256-0001/f6af3980 (h91 ep1in [2/0] q1 p64) qh256-0001/f6af3900 (h92 ep1in [2/0] q1 p64) qh256-0001/f6af3680 (h93 ep1in [2/0] q1 p64) qh256-0001/f6af3600 (h94 ep1in [2/0] q1 p64) qh256-0001/f6af3f00 (h95 ep1in [2/0] q1 p64)
 511:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80 ... qh256-0001/f4415c00 ... qh256-0001/f4415600 ... qh256-0001/f4415680 ... qh256-0001/f4415a00 ... qh256-0001/f4415a80 ... qh256-0001/f4415800 ... qh256-0001/f4415f00 ... qh256-0001/f4415c80 ... qh256-0001/f4415e80 ... qh256-0001/f4415e00 ... qh256-0001/f4415980 ... qh256-0001/f4415900 ... qh256-0001/f4415480 ... qh256-0001/f4415380 ... qh256-0001/f6af3e80 ... qh256-0001/f6af3d00 ... qh256-0001/f6af3b80 ... qh256-0001/f6af3b00 ... qh256-0001/f6af3180 ... qh256-0001/f6af3100 ... qh256-0001/f6af3c80 ... qh256-0001/f6af3d80 ... qh256-0001/f6af3a80 ... qh256-0001/f6af3080 ... qh256-0001/f6af3000 ... qh256-0001/f6af3280 ... qh256-0001/f6af3200 ... qh256-0001/f6af3c00 ... qh256-0001/f6af3480 ... qh256-0001/f6af3400 ... qh256-0001/f6af3700 ... qh256-0001/f6af3980 ... qh256-0001/f6af3900 ... qh256-0001/f6af3680 ... qh256-0001/f6af3600 ... qh256-0001/f6af3f00
 767:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80 ... qh256-0001/f4415c00 ... qh256-0001/f4415600 ... qh256-0001/f4415680 ... qh256-0001/f4415a00 ... qh256-0001/f4415a80 ... qh256-0001/f4415800 ... qh256-0001/f4415f00 ... qh256-0001/f4415c80 ... qh256-0001/f4415e80 ... qh256-0001/f4415e00 ... qh256-0001/f4415980 ... qh256-0001/f4415900 ... qh256-0001/f4415480 ... qh256-0001/f4415380 ... qh256-0001/f6af3e80 ... qh256-0001/f6af3d00 ... qh256-0001/f6af3b80 ... qh256-0001/f6af3b00 ... qh256-0001/f6af3180 ... qh256-0001/f6af3100 ... qh256-0001/f6af3c80 ... qh256-0001/f6af3d80 ... qh256-0001/f6af3a80 ... qh256-0001/f6af3080 ... qh256-0001/f6af3000 ... qh256-0001/f6af3280 ... qh256-0001/f6af3200 ... qh256-0001/f6af3c00 ... qh256-0001/f6af3480 ... qh256-0001/f6af3400 ... qh256-0001/f6af3700 ... qh256-0001/f6af3980 ... qh256-0001/f6af3900 ... qh256-0001/f6af3680 ... qh256-0001/f6af3600 ... qh256-0001/f6af3f00
1023:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80 ... qh256-0001/f4415c00 ... qh256-0001/f4415600 ... qh256-0001/f4415680 ... qh256-0001/f4415a00 ... qh256-0001/f4415a80 ... qh256-0001/f4415800 ... qh256-0001/f4415f00 ... qh256-0001/f4415c80 ... qh256-0001/f4415e80 ... qh256-0001/f4415e00 ... qh256-0001/f4415980 ... qh256-0001/f4415900 ... qh256-0001/f4415480 ... qh256-0001/f4415380 ... qh256-0001/f6af3e80 ... qh256-0001/f6af3d00 ... qh256-0001/f6af3b80 ... qh256-0001/f6af3b00 ... qh256-0001/f6af3180 ... qh256-0001/f6af3100 ... qh256-0001/f6af3c80 ... qh256-0001/f6af3d80 ... qh256-0001/f6af3a80 ... qh256-0001/f6af3080 ... qh256-0001/f6af3000 ... qh256-0001/f6af3280 ... qh256-0001/f6af3200 ... qh256-0001/f6af3c00 ... qh256-0001/f6af3480 ... qh256-0001/f6af3400 ... qh256-0001/f6af3700 ... qh256-0001/f6af3980 ... qh256-0001/f6af3900 ... qh256-0001/f6af3680 ... qh256-0001/f6af3600 ... qh256-0001/f6af3f00

[recsys@ws2 0000:00:1d.7]$ cat registers
bus pci, device 0000:00:1d.7
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 01000001 linux
SMI sts/enable 0x20080000
structural params 0x00103206
capability params 0x00016871
status 6008 Periodic Recl FLR
command 010011 (park)=0 ithresh=1 Periodic period=1024 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 043d
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
port 6 status 001005 POWER sig=se0 PE CONNECT
irq normal 20006 err 141 reclaim 10102 (lost 0)
complete 21407 unlink 217


NEC HCD (received 24 interrupt transfers and re-submitted 24 interrupt URBs):

[recsys@ws2 0000:05:05.2]$ cat periodic
size = 256
 255:  qh256-0001/f45ae080 (h104 ep1in [1/0] q1 p1) qh256-0001/f45ae400 (h117 ep1in [1/0] q1 p1) qh256-0001/f45aeb00 (h118 ep1in [1/0] q1 p1) qh256-0001/f45aec00 (h17 ep1in [1/0] q1 p1) qh256-0001/f45aed00 (h18 ep1in [1/0] q1 p1) qh256-0001/f440ee80 (h43 ep1in [1/0] q1 p1) qh256-0001/f440e580 (h111 ep1in [2/0] q1 p64) qh256-0001/f440e600 (h112 ep1in [2/0] q1 p64) qh256-0001/f440e000 (h113 ep1in [2/0] q1 p64) qh256-0001/f440e400 (h114 ep1in [2/0] q1 p64) qh256-0001/f440e680 (h115 ep1in [2/0] q1 p64) qh256-0001/f440e700 (h116 ep1in [2/0] q1 p64) qh256-0001/f440e380 (h5 ep1in [2/0] q1 p64) qh256-0001/f440e500 (h6 ep1in [2/0] q1 p64) qh256-0001/f440e300 (h7 ep1in [2/0] q1 p64) qh256-0001/f440e280 (h8 ep1in [2/0] q1 p64) qh256-0001/f440e480 (h9 ep1in [2/0] q1 p64) qh256-0001/f440e180 (h10 ep1in [2/0] q1 p64) qh256-0001/f440e200 (h11 ep1in [2/0] q1 p64) qh256-0001/f440e880 (h12 ep1in [2/0] q1 p64) qh256-0001/f5708900 (h13 ep1in [2/0] q1 p64) qh256-0001/f5708880 (h14 ep1in [2/0] q1 p64) qh256-0001/f5708800 (h15 ep1in [2/0] q1 p64) qh256-0001/f5708e80 (h16 ep1in [2/0] q1 p64) qh256-0001/f5708e00 (h31 ep1in [2/0] q1 p64) qh256-0001/f5708d80 (h32 ep1in [2/0] q1 p64) qh256-0001/f5708d00 (h33 ep1in [2/0] q1 p64) qh256-0001/f5708c80 (h34 ep1in [2/0] q1 p64) qh256-0001/f5708c00 (h35 ep1in [2/0] q1 p64) qh256-0001/f5708400 (h36 ep1in [2/0] q1 p64) qh256-0001/f5708100 (h37 ep1in [2/0] q1 p64) qh256-0001/f5708080 (h38 ep1in [2/0] q1 p64) qh256-0001/f5708000 (h39 ep1in [2/0] q1 p64) qh256-0001/f5708180 (h40 ep1in [2/0] q1 p64) qh256-0001/f5708680 (h41 ep1in [2/0] q1 p64) qh256-0001/f5708600 (h42 ep1in [2/0] q1 p64) qh256-0001/f5708a80 (h50 ep1in [2/0] q1 p64) qh256-0001/f5708b80 (h51 ep1in [2/0] q1 p64) qh256-0001/f5708380 (h52 ep1in [2/0] q1 p64) qh256-0001/f5708300 (h53 ep1in [2/0] q1 p64) qh256-0001/f5708280 (h54 ep1in [2/0] q1 p64) qh256-0001/f5708200 (h55 ep1in [2/0] q1 p64)

[recsys@ws2 0000:05:05.2]$ cat registers
bus pci, device 0000:05:05.2
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 00000001
SMI sts/enable 0xc0080000
structural params 0x00002395
capability params 0x0000e806
status 6008 Periodic Recl FLR
command 010019 (park)=0 ithresh=1 Periodic period=256 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 2ccd
port 1 status 001000 POWER sig=se0
port 2 status 001005 POWER sig=se0 PE CONNECT
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
irq normal 12936 err 0 reclaim 8937 (lost 0)
complete 16168 unlink 157

==========================================================================

after rmmod ruusb driver:

Intel HCD:

[recsys@ws2 0000:00:1d.7]$ cat periodic
size = 1024
 255:  qh256-0001/f44cc080 (h18 ep1in [1/0] q1 p1) qh256-0001/f44cc400 (h31 ep1in [1/0] q1 p1) qh256-0001/f44cc680 (h32 ep1in [1/0] q1 p1) qh256-0001/f44ccc00 (h57 ep1in [1/0] q1 p1) qh256-0001/f44ccd00 (h58 ep1in [1/0] q1 p1) qh256-0001/f4415d80 (h83 ep1in [1/0] q1 p1)
 511:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80
 767:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80
1023:  qh256-0001/f44cc080 ... qh256-0001/f44cc400 ... qh256-0001/f44cc680 ... qh256-0001/f44ccc00 ... qh256-0001/f44ccd00 ... qh256-0001/f4415d80

[recsys@ws2 0000:00:1d.7]$ cat registers
bus pci, device 0000:00:1d.7
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 01000001 linux
SMI sts/enable 0x20080000
structural params 0x00103206
capability params 0x00016871
status 6008 Periodic Recl FLR
command 010011 (park)=0 ithresh=1 Periodic period=1024 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 1fbd
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
port 6 status 001005 POWER sig=se0 PE CONNECT
irq normal 20006 err 141 reclaim 10102 (lost 0)
complete 21407 unlink 253


NEC HCD:

[recsys@ws2 0000:05:05.2]$ cat periodic
size = 256
 255:  qh256-0001/f45ae080 (h104 ep1in [1/0] q1 p1) qh256-0001/f45ae400 (h117 ep1in [1/0] q1 p1) qh256-0001/f45aeb00 (h118 ep1in [1/0] q1 p1) qh256-0001/f45aec00 (h17 ep1in [1/0] q1 p1) qh256-0001/f45aed00 (h18 ep1in [1/0] q1 p1) qh256-0001/f440ee80 (h43 ep1in [1/0] q1 p1)

[recsys@ws2 0000:05:05.2]$ cat registers
bus pci, device 0000:05:05.2
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 00000001
SMI sts/enable 0xc0080000
structural params 0x00002395
capability params 0x0000e806
status 6008 Periodic Recl FLR
command 010019 (park)=0 ithresh=1 Periodic period=256 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 19a2
port 1 status 001000 POWER sig=se0
port 2 status 001005 POWER sig=se0 PE CONNECT
port 3 status 001005 POWER sig=se0 PE CONNECT
port 4 status 001005 POWER sig=se0 PE CONNECT
port 5 status 001005 POWER sig=se0 PE CONNECT
irq normal 12936 err 0 reclaim 8937 (lost 0)
complete 16168 unlink 193

==========================================================================

after unplug all RUs and hubs:

Intel HCD:

[recsys@ws2 0000:00:1d.7]$ cat periodic
size = 1024

[recsys@ws2 0000:00:1d.7]$ cat registers
bus pci, device 0000:00:1d.7
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 01000001 linux
SMI sts/enable 0x20080000
structural params 0x00103206
capability params 0x00016871
status 2008 Recl FLR
command 010001 (park)=0 ithresh=1 period=1024 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 203f
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001000 POWER sig=se0
port 4 status 001000 POWER sig=se0
port 5 status 001000 POWER sig=se0
port 6 status 001000 POWER sig=se0
irq normal 20006 err 141 reclaim 10102 (lost 0)
complete 21407 unlink 259


NEC HCD:

[recsys@ws2 0000:05:05.2]$ cat periodic
size = 256

[recsys@ws2 0000:05:05.2]$ cat registers
bus pci, device 0000:05:05.2
EHCI Host Controller
EHCI 1.00, hcd state 1
ownership 00000001
SMI sts/enable 0xc0080000
structural params 0x00002395
capability params 0x0000e806
status 2008 Recl FLR
command 010009 (park)=0 ithresh=1 period=256 RUN
intrenable 37 IAA FATAL PCD ERR INT
uframe 3def
port 1 status 001000 POWER sig=se0
port 2 status 001000 POWER sig=se0
port 3 status 001000 POWER sig=se0
port 4 status 001000 POWER sig=se0
port 5 status 001000 POWER sig=se0
irq normal 12936 err 0 reclaim 8937 (lost 0)
complete 16168 unlink 199

==========================================================================
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