Re: Ordering Dell XPS 13 9310 to test QCA6390

From: Kalle Valo <kvalo@codeaurora.org>
To: "Luo\, Sining" <sluo@ciena.com>
Cc: "ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
	"wink@technolu.st" <wink@technolu.st>,
	"mail@mitchellnordine.com" <mail@mitchellnordine.com>
Subject: Re: Ordering Dell XPS 13 9310 to test QCA6390
Date: Wed, 13 Jan 2021 19:05:33 +0200	[thread overview]
Message-ID: <874kjkix7m.fsf_-_@codeaurora.org> (raw)
In-Reply-To: <075eed74b59afc9bc4f870aea6765f85d040cf47.camel@ciena.com> (Sining Luo's message of "Wed, 13 Jan 2021 15:22:31 +0000")

"Luo, Sining" <sluo@ciena.com> writes:

> On Wed, 2021-01-13 at 13:02 +0100, wi nk wrote:
>> On Wed, Jan 13, 2021 at 12:54 PM Kalle Valo <kvalo@codeaurora.org>
>> wrote:
>> > 
>> > wi nk <wink@technolu.st> writes:
>> > 
>> > > > I got the XPS 13 9310 now and it indeed had AX500. But it also
>> > > > has an
>> > > > updated BIOS:
>> > > > 
>> > > > [    0.000000] DMI: Dell Inc. XPS 13 9310/0MRT12, BIOS 1.1.4
>> > > > 11/23/2020
>> > > > 
>> > > > And with that I can get 32 MSI vectors:
>> > > > 
>> > > > [    2.758219] ath11k_pci 0000:56:00.0: WARNING: ath11k PCI
>> > > > support is experimental!
>> > > > [ 2.758778] ath11k_pci 0000:56:00.0: BAR 0: assigned [mem
>> > > > 0x8c300000-0x8c3fffff 64bit]
>> > > > [    2.758797] ath11k_pci 0000:56:00.0: enabling device (0000 ->
>> > > > 0002)
>> > > > [    2.759086] ath11k_pci 0000:56:00.0: MSI vectors: 32
>> > > > [    3.208447] ath11k_pci 0000:56:00.0: qmi req mem_seg[0]
>> > > > 0x3f000000 3522560 1
>> > > > [    3.208449] ath11k_pci 0000:56:00.0: qmi req mem_seg[1]
>> > > > 0x3f500000 884736 4
>> > > > [ 3.215355] ath11k_pci 0000:56:00.0: chip_id 0x0 chip_family 0xb
>> > > > board_id 0xff soc_id 0xffffffff
>> > > > [ 3.215358] ath11k_pci 0000:56:00.0: fw_version 0x101c06cc
>> > > > fw_build_timestamp 2020-06-24 19:50 fw_build_id
>> > > 
>> > >   I did see the updated BIOS from a few weeks ago, but I've been a
>> > > little hesitant to update since I wasn't sure what would happen or
>> > > if
>> > > I could downgrade.
>> > 
>> > Makes sense, better to be careful.
>> > 
>> > > So to confirm, the new BIOS is allowing the driver to obtain all
>> > > 32
>> > > msi vectors removing the need for the single MSI patching? Does
>> > > the
>> > > MHI / M2 behavior also change to work properly?
>> > 
>> > I have not tested these yet as I only did a quick 10 minute test. I
>> > was
>> > offline over two weeks so I have a lot of catching up to do, but
>> > will
>> > get back to you in next few days on these. My plan is to also test
>> > this
>> > new BIOS with the official 5.10 release from Linus (tag v5.10).
>> > 
>> > --
>> > https://urldefense.com/v3/__https://patchwork.kernel.org/project/linux-wireless/list/__;!!OSsGDw!d42JFwn6tITykEUQ6ZYtfIMif5BRPdVt_zOqCzoINc640OzwSHusv5X588g$
>> >  
>> > 
>> > https://urldefense.com/v3/__https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches__;!!OSsGDw!d42JFwn6tITykEUQ6ZYtfIMif5BRPdVt_zOqCzoINc640OzwSHusay1hmvY$
>> >  
>> 
>> Awesome, let me know how it goes.  I've got the 9310 branch running
>> 5.10.2 with no issues (16 days uptime) so I wouldn't expect you to see
>> anything super new there, good luck :D.
>> 
>> ps - Happy new year
>> 
>
> Hi Kalle and Wi,
>
> I've upgraded my 9310 BIOS to the same 1.1.4 since it's available:
>
> [    0.000000] DMI: Dell Inc. XPS 13 9310/0F7M4C, BIOS 1.1.4 11/23/2020
>
> But it's still getting a single MSI vector:
>
> [    3.143712] ath11k_pci 0000:56:00.0: WARNING: ath11k PCI support is
> experimental!
> [    3.143794] ath11k_pci 0000:56:00.0: BAR 0: assigned [mem 0x8c300000-
> 0x8c3fffff 64bit]
> [    3.143811] ath11k_pci 0000:56:00.0: enabling device (0000 -> 0002)
> [    3.143885] ath11k_pci 0000:56:00.0: MSI vectors: 1
> [    3.755747] ath11k_pci 0000:56:00.0: qmi req mem_seg[0] 0x57400000
> 3522560 1
> [    3.755748] ath11k_pci 0000:56:00.0: qmi req mem_seg[1] 0x54d00000
> 884736 4
> [    3.764110] ath11k_pci 0000:56:00.0: chip_id 0x0 chip_family 0xb
> board_id 0xff soc_id 0xffffffff
> [    3.764111] ath11k_pci 0000:56:00.0: fw_version 0x101c06cc
> fw_build_timestamp 2020-06-24 19:50 fw_build_id 
> [    3.933936] ath11k_pci 0000:56:00.0 wlp86s0: renamed from wlan0
>
> Does it mean that the single MSI issue is not from the BIOS? 

Do you have vt-d enabled in BIOS? IIRC that's needed for 32 vectors.

-- 
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https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

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