QLogic 2360 FC HBAs not playing well with others

[Brad Waite]

I beseech you, oh great masters of SCSI and fibre channel, hear my pleas
for help!

My 2 QLE2360s don't appear to be waking up properly in a Dell R710
running 7.2 AMD64.  At the very least, they're not recognizing any of
the volumes on the Sun 2540 array in the fabric.  Everything works just
fine under VMware ESXi 4.1, though.

Here's the relevant dmesg output:

registered firmware set <isp_1040>
registered firmware set <isp_1040_it>
registered firmware set <isp_1080>
registered firmware set <isp_1080_it>
registered firmware set <isp_12160>
registered firmware set <isp_12160_it>
registered firmware set <isp_2100>
registered firmware set <isp_2200>
registered firmware set <isp_2300>
registered firmware set <isp_2322>
registered firmware set <isp_2400>
...
isp0: <Qlogic ISP 2322 PCI FC-AL Adapter> port 0xec00-0xecff mem
0xdf2ff000-0xdf2fffff irq 47 at device 7.0 on pci7
isp0: setting role to 0x2
isp0: [ITHREAD]
isp0: Board Type 2322, Chip Revision 0x3, loaded F/W Revision 3.3.19
...
isp1: <Qlogic ISP 2322 PCI FC-AL Adapter> port 0xdc00-0xdcff mem
0xdf3ff000-0xdf3fffff irq 49 at device 7.0 on pci11
isp1: setting role to 0x2
isp1: [ITHREAD]
isp1: Board Type 2322, Chip Revision 0x3, loaded F/W Revision 3.3.19
...
isp0: Interrupting Mailbox Command (0x69) Timeout (100000us)
isp0: Mailbox Command 'GET FW STATE' failed (TIMEOUT)
isp1: Interrupting Mailbox Command (0x69) Timeout (100000us)
isp1: Mailbox Command 'GET FW STATE' failed (TIMEOUT)
[lather, rinse, repeat]

Other than the flash drive (da0), no other da disks appear.

I've tried adding the following to /boot/device.hints and
/boot/loader.conf respectively with no change in results:

hint.isp.0.fullduplex="1"
hint.isp.0.topology="nport"
hint.isp.0.role="2"
hint.isp.1.fullduplex="1"
hint.isp.1.topology="nport"
hint.isp.1.role="2"

ispfw_load="YES"

What could be wrong?