[ 41.579330] Exar PCIe (XR17V35x) serial driver Revision: 2.2 [ 41.585489] XR17V35x : MSI interrupts enabled [ 41.589955] 0000:04:00.0: ttyXR0 at MMIO 0x10200000 (irq = 486) is a XR17v35x [ 41.630573] init_one_xrpciserialcard line:0 [ 41.634833] 0000:04:00.0: ttyXR1 at MMIO 0x10200400 (irq = 486) is a XR17v35x [ 41.670549] init_one_xrpciserialcard line:1 [ 41.674808] 0000:04:00.0: ttyXR2 at MMIO 0x10200800 (irq = 486) is a XR17v35x [ 41.710551] init_one_xrpciserialcard line:2 [ 41.714809] 0000:04:00.0: ttyXR3 at MMIO 0x10200c00 (irq = 486) is a XR17v35x [ 41.750550] init_one_xrpciserialcard line:3 [ 132.304390] root@apalis-t30:~# lspci -xvd 13A8:* 04:00.0 Serial controller: Exar Corp. Device 0354 (rev 03) (prog-if 02 [16550]) Flags: bus master, fast devsel, latency 0, IRQ 486 Memory at 10200000 (32-bit, non-prefetchable) [size=16K] Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [78] Power Management version 3 Capabilities: [80] Express Endpoint, MSI 01 Kernel driver in use: xrserial Kernel modules: 8250_pci 00: a8 13 54 03 46 05 10 00 03 02 00 07 08 00 00 00 10: 00 00 20 10 00 00 00 00 00 00 00 00 00 00 00 00 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 30: 00 00 00 00 50 00 00 00 00 00 00 00 82 01 00 00 root@apalis-t30:~# root@apalis-t30:~# cat /proc/iomem 03000000-030fffff : PCI IO 10000000-1fffffff : PCIe MEM Space 10000000-100fffff : PCI Bus 0000:07 10000000-1001ffff : 0000:07:00.0 10000000-1001ffff : igb 10020000-10023fff : 0000:07:00.0 10020000-10023fff : igb 10200000-10ffffff : PCI Bus 0000:01 10200000-10ffffff : PCI Bus 0000:02 10200000-102fffff : PCI Bus 0000:04 10200000-10203fff : 0000:04:00.0 10400000-10ffffff : PCI Bus 0000:05 10400000-10403fff : 0000:05:00.0 10400000-10403fff : igb 10800000-10ffffff : 0000:05:00.0 10800000-10ffffff : igb 20000000-3fffffff : PCIe PREFETCH MEM Space 50000000-50023fff : host1x 50000000-50023fff : host1x 54040000-5407ffff : regs 54040000-5407ffff : mpe