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Date:      Wed, 30 Jan 2019 10:02:31 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 235246] if_em init fails to allocate IRQ in 12.0-RELEASE
Message-ID:  <bug-235246-7501-eYirFWX6gd@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235246-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235246-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235246

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

WORKING:
em0@pci0:1:0:0: class=3D0x020000 card=3D0x10d315d9 chip=3D0x10d38086 rev=3D=
0x00
hdr=3D0x00
    vendor     =3D 'Intel Corporation'
    device     =3D '82574L Gigabit Network Connection'
    class      =3D network
    subclass   =3D 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=20
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@pci0:11:0:0:      class=3D0x020000 card=3D0x84571043 chip=3D0x150c808=
6 rev=3D0x00
hdr=3D0x00
    vendor     =3D 'Intel Corporation'
    device     =3D '82583V Gigabit Network Connection'
    class      =3D network
    subclass   =3D 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=20
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

--=20
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