Date: Thu, 25 Nov 2021 09:03:55 +1030 From: "Daniel O'Connor" <darius@dons.net.au> To: freebsd-usb@freebsd.org Subject: Poor USB performance on ASUS 520 motherboard (no IRQ?) Message-ID: <A4A84F57-67F2-4402-B81C-9742F2C2B218@dons.net.au>
next in thread | raw e-mail | index | archive | help
[ Originally sent to freebsd-stable@ ]
Hi,
We bought a few low end motherboards to drive our hardware which is =
controlled by a custom USB (Cypress FX2 interface) board.
I found that the Gigabyte GA-A320M-H one works fine but the ASUS =
A520M-A/CSM one is significantly slower for tests where there are many =
back and forth messages (streaming data seems fine).
I've tried updating the BIOS and tested FreeBSD 12 (same as the =
Gigabyte) and FreeBSD 13 with no change.
One thing I did notice is this dmesg output:
xhci0: <XHCI (generic) USB 3.0 controller> mem 0xfcfa0000-0xfcfa7fff at =
device 0.0 on pci1
xhci0: 32 bytes context size, 64-bit DMAxhci1: <XHCI (generic) USB 3.0 =
controller
...
xhci1: <XHCI (generic) USB 3.0 controller> mem 0xfcb00000-0xfcbfffff at =
device 0.3 on pci7
xhci1: 64 bytes context size, 64-bit DMA
..
xhci2: <XHCI (generic) USB 3.0 controller> mem 0xfca00000-0xfcafffff at =
device 0.4 on pci7
xhci2: 64 bytes context size, 64-bit DMA
vs the working one:
xhci0: <XHCI (generic) USB 3.0 controller> mem 0xfcea0000-0xfcea7fff irq =
28 at device 0.0 on pci1
xhci0: 32 bytes context size, 64-bit DMA
...
xhci1: <XHCI (generic) USB 3.0 controller> mem 0xfca00000-0xfcafffff irq =
55 at device 0.3 on pci7
xhci1: 64 bytes context size, 64-bit DMA
xhci1: Unable to map MSI-X table
...
xhci2: <XHCI (generic) USB 3.0 controller> mem 0xfc900000-0xfc9fffff irq =
52 at device 0.4 on pci7
xhci2: 64 bytes context size, 64-bit DMA
xhci2: Unable to map MSI-X table
I think the MSI-X warning is a difference between 12 & 13 but the lack =
of IRQ appears to be common to the brokenness.
I tried setting these with no change:
hw.pci.honor_msi_blacklist=3D"0"
hw.pci.msix_rewrite_table=3D"1"
And also without success:
hw.pci.enable_msix=3D"0"
hw.pci.enable_msi=3D"0"
pciconf -lcvb shows:
xhci0@pci0:1:0:0: class=3D0x0c0330 card=3D0x11421b21 =
chip=3D0x43ec1022 rev=3D0x00 hdr=3D0x00
vendor =3D 'Advanced Micro Devices, Inc. [AMD]'
class =3D serial bus
subclass =3D USB
bar [10] =3D type Memory, range 64, base 0xfcfa0000, size 32768, =
enabled
cap 05[50] =3D MSI supports 8 messages, 64 bit
cap 11[68] =3D MSI-X supports 8 messages
Table in map 0x10[0x2000], PBA in map 0x10[0x2080]
cap 01[78] =3D powerspec 3 supports D0 D3 current D0
cap 10[80] =3D PCI-Express 2 legacy endpoint max data 128(512) RO NS
link x4(x4) speed 8.0(8.0) ASPM disabled(L0s/L1)
ecap 0001[100] =3D AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0019[200] =3D PCIe Sec 1 lane errors 0
ecap 0018[300] =3D LTR 1
xhci1@pci0:7:0:3: class=3D0x0c0330 card=3D0x876b1043 =
chip=3D0x15e01022 rev=3D0x00 hdr=3D0x00
vendor =3D 'Advanced Micro Devices, Inc. [AMD]'
device =3D 'Raven USB 3.1'
class =3D serial bus
subclass =3D USB
bar [10] =3D type Memory, range 64, base 0xfcb00000, size 1048576, =
enabled
cap 09[48] =3D vendor (length 8)
cap 01[50] =3D powerspec 3 supports D0 D3 current D0
cap 10[64] =3D PCI-Express 2 endpoint max data 256(256) RO NS
link x16(x16) speed 8.0(8.0) ASPM disabled(L0s/L1)
cap 05[a0] =3D MSI supports 8 messages, 64 bit
cap 11[c0] =3D MSI-X supports 8 messages
Table in map 0x10[0xfe000], PBA in map 0x10[0xff000]
ecap 000b[100] =3D Vendor 1 ID 1
xhci2@pci0:7:0:4: class=3D0x0c0330 card=3D0x876b1043 =
chip=3D0x15e11022 rev=3D0x00 hdr=3D0x00
vendor =3D 'Advanced Micro Devices, Inc. [AMD]'
device =3D 'Raven USB 3.1'
class =3D serial bus
subclass =3D USB
bar [10] =3D type Memory, range 64, base 0xfca00000, size 1048576, =
enabled
cap 09[48] =3D vendor (length 8)
cap 01[50] =3D powerspec 3 supports D0 D3 current D0
cap 10[64] =3D PCI-Express 2 endpoint max data 256(256) RO NS
link x16(x16) speed 8.0(8.0) ASPM disabled(L0s/L1)
cap 05[a0] =3D MSI supports 8 messages, 64 bit
cap 11[c0] =3D MSI-X supports 8 messages
Table in map 0x10[0xfe000], PBA in map 0x10[0xff000]
ecap 000b[100] =3D Vendor 1 ID 1
I'm happy to try a newer kernel or patches if anyone has suggestions :)
Thanks.
--
Daniel O'Connor
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?A4A84F57-67F2-4402-B81C-9742F2C2B218>