FreeBSD 10.1 no detecs psm mouse on Dell Inspiron.
I seen that the problem was related to wrong I/O port allocation in ACPI DSDT.
PS2M has not port allocated in its CSR and mouse I/O port 0x66 is allocated by PS2K resources.
I patched BIOS DSDT and fix problem loading custom AML code using the loader tunables below:
Booting FreeBSD in verbose mode in "/var/run/dmesg.boot" was entry:
psm0: unable to allocate IRQ
Created attachment 152611 [details]
Original Dell ACPI DSDT in DSL format
Created attachment 152612 [details]
My Dell ACPI DSDT in DSL format
Created attachment 152613 [details]
My Dell ACPI DSDT in AML binary format