I have a board with an PCI Express-to-PCI Bridge (Texas Instruments
XIO2001).
Attached to the PCI bus, there are 2 FPGA PCI Target devices needing 32MB
memory map each.
The PCI rescan "echo 1 > /sys/bus/pci/rescan" memory assign fails.
dmesg messages:
[ 150.978654] pci 0000:02:03.0: [4150:0001] type 00 class 0x068000
[ 150.978684] pci 0000:02:03.0: reg 0x10: [mem 0x00000000-0x01ffffff]
[ 150.978885] pci 0000:02:04.0: [4150:000a] type 00 class 0x078000
[ 150.978909] pci 0000:02:04.0: reg 0x10: [mem 0x00000000-0x01ffffff]
[ 150.979158] pcieport 0000:00:1c.0: bridge window [mem 0x00100000-
0x000fffff 64bit pref] to [bus 01-02] add_size 200000
[ 150.979166] pcieport 0000:00:1c.0: bridge window [mem 0x02000000-
0x05ffffff] to [bus 01-02] add_size 2000000
[ 150.979183] pcieport 0000:00:1c.2: bridge window [mem 0x00100000-
0x000fffff 64bit pref] to [bus 04] add_size 200000
[ 150.979190] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has
bogus alignment
[ 150.979199] pcieport 0000:00:1c.0: res[14]=[mem 0x02000000-0x05ffffff]
get_res_add_size add_size 2000000
[ 150.979205] pcieport 0000:00:1c.0: res[15]=[mem 0x00100000-0x000fffff
64bit pref] get_res_add_size add_size 200000
[ 150.979211] pcieport 0000:00:1c.2: res[15]=[mem 0x00100000-0x000fffff
64bit pref] get_res_add_size add_size 200000
[ 150.979222] pcieport 0000:00:1c.0: BAR 14: can't assign mem (size
0x6000000)
[ 150.979230] pcieport 0000:00:1c.0: BAR 15: can't assign mem pref (size
0x200000)
[ 150.979238] pcieport 0000:00:1c.2: BAR 15: can't assign mem pref (size
0x200000)
[ 150.979245] pcieport 0000:00:1c.0: BAR 14: can't assign mem (size
0x4000000)
[ 150.979253] pcieport 0000:00:1c.2: BAR 15: can't assign mem pref (size
0x200000)
[ 150.979260] pcieport 0000:00:1c.0: BAR 15: can't assign mem pref (size
0x200000)
[ 150.979266] pci 0000:01:00.0: BAR 14: can't assign mem (size 0x4000000)
[ 150.979272] pci 0000:02:03.0: BAR 0: can't assign mem (size 0x2000000)
[ 150.979277] pci 0000:02:04.0: BAR 0: can't assign mem (size 0x2000000)
[ 150.979281] pci 0000:01:00.0: PCI bridge to [bus 02]
lspci:
00:00.0 Host bridge: Intel Corporation ValleyView SSA-CUnit (rev 11)
00:02.0 VGA compatible controller: Intel Corporation ValleyView Gen7 (rev
11)
00:1a.0 Encryption controller: Intel Corporation ValleyView SEC (rev 11)
00:1b.0 Audio device: Intel Corporation ValleyView High Definition Audio
Controller (rev 11)
00:1c.0 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev
11)
00:1c.1 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev
11)
00:1c.2 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev
11)
00:1d.0 USB controller: Intel Corporation ValleyView USB Enhanced Host
Controller (rev 11)
00:1f.0 ISA bridge: Intel Corporation ValleyView Power Control Unit (rev 11)
00:1f.3 SMBus: Intel Corporation ValleyView SMBus Controller (rev 11)
01:00.0 PCI bridge: Texas Instruments XIO2001 PCI Express-to-PCI Bridge
02:03.0 Bridge: ONA Electroerosion PCI32TLITE FILSTRUP1 PCI to VME Bridge
Controller (rev 04)
02:04.0 Communication controller: ONA Electroerosion Device 000a
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)
04:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6101/6102 single-
port PATA133 interface (rev c0)
lspci -vt
-[0000:00]-+-00.0 Intel Corporation ValleyView SSA-CUnit
+-02.0 Intel Corporation ValleyView Gen7
+-1a.0 Intel Corporation ValleyView SEC
+-1b.0 Intel Corporation ValleyView High Definition Audio
Controller
+-1c.0-[01-02]----00.0-[02]--+-03.0 ONA Electroerosion
PCI32TLITE FILSTRUP1 PCI to VME Bridge Controller
| \-04.0 ONA Electroerosion Device
000a
+-1c.1-[03]----00.0 Realtek Semiconductor Co., Ltd.
RTL8101E/RTL8102E PCI Express Fast Ethernet controller
+-1c.2-[04]----00.0 Marvell Technology Group Ltd. 88SE6101/6102
single-port PATA133 interface
+-1d.0 Intel Corporation ValleyView USB Enhanced Host Controller
+-1f.0 Intel Corporation ValleyView Power Control Unit
\-1f.3 Intel Corporation ValleyView SMBus Controller
Linux: Ubuntu 14.04
Kernel: 3.13.0-62-generic
Is possible to fix it?
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