[Bug 235246] if_em init fails to allocate IRQ in 12.0-RELEASE

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235246

--- Comment #1 from pr at aoek.com ---
Ok, here I have an update: I found a working and a not working hardware, so
maybe it helps.

WORKING:
em0 at pci0:1:0:0: class=0x020000 card=0x10d315d9 chip=0x10d38086 rev=0x00
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82574L Gigabit Network Connection'
    class      = network
    subclass   = ethernet

em0: <Intel(R) PRO/1000 Network Connection> port 0xd800-0xd81f mem
0xfe9e0000-0xfe9fffff,0xfe9dc000-0xfe9dffff irq 48 at device 0.0 on pci1
em0: attach_pre capping queues at 2
em0: using 1024 tx descriptors and 1024 rx descriptors
em0: msix_init qsets capped at 2
em0: pxm cpus: 4 queue msgs: 4 admincnt: 1
em0: using 2 rx queues 2 tx queues 
em0: Using MSIX interrupts with 3 vectors
em0: allocated for 2 tx_queues
em0: allocated for 2 rx_queues
em0: Ethernet address: 00:25:90:20:e7:aa
em0: netmap queues/slots: TX 2/1024, RX 2/1024
em0: link state changed to UP

NOT WORKING:
none2 at pci0:11:0:0:      class=0x020000 card=0x84571043 chip=0x150c8086 rev=0x00
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82583V Gigabit Network Connection'
    class      = network
    subclass   = ethernet

em0: <Intel(R) PRO/1000 Network Connection> port 0xec00-0xec1f mem
0xfe9e0000-0xfe9fffff,0xfe9dc000-0xfe9dffff irq 17 at device 0.0 on pci11
em0: attach_pre capping queues at 1
em0: using 1024 tx descriptors and 1024 rx descriptors
em0: msix_init qsets capped at 1
em0: pxm cpus: 6 queue msgs: 0 admincnt: 1
em0: using 0 rx queues 0 tx queues 
em0: Using MSIX interrupts with 1 vectors
em0: allocated for 0 tx_queues
em0: allocated for 0 rx_queues
em0: failed to allocate IRQ for rid 0, name irq0.
em0: iflib_legacy_setup failed 12
device_attach: em0 attach returned 12

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