From: Niklas Cassel <cassel@kernel.org>
To: Koichiro Den <den@valinux.co.jp>
Cc: vkoul@kernel.org, mani@kernel.org, Frank.Li@nxp.com,
jingoohan1@gmail.com, lpieralisi@kernel.org,
kwilczynski@kernel.org, robh@kernel.org, bhelgaas@google.com,
kishon@kernel.org, jdmason@kudzu.us, allenbh@gmail.com,
dmaengine@vger.kernel.org, linux-pci@vger.kernel.org,
ntb@lists.linux.dev, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 0/8] PCI: endpoint: pci-ep-msi: Add embedded doorbell fallback
Date: Tue, 10 Feb 2026 13:24:29 +0100 [thread overview]
Message-ID: <aYsjfTtA0EsXwh69@ryzen> (raw)
In-Reply-To: <20260209125316.2132589-1-den@valinux.co.jp>
On Mon, Feb 09, 2026 at 09:53:08PM +0900, Koichiro Den wrote:
> Tested on
> =========
>
> I tested the embedded (DMA) doorbell fallback path (via pci-epf-test) on
> R-Car Spider boards:
>
> $ ./pci_endpoint_test -t DOORBELL_TEST
> TAP version 13
> 1..1
> # Starting 1 tests from 1 test cases.
> # RUN pcie_ep_doorbell.DOORBELL_TEST ...
> # OK pcie_ep_doorbell.DOORBELL_TEST
> ok 1 pcie_ep_doorbell.DOORBELL_TEST
> # PASSED: 1 / 1 tests passed.
> # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
>
> with the following message observed on the EP side:
>
> [ 80.464653] pci_epf_test pci_epf_test.0: Using embedded (DMA) doorbell fallback
>
> (Note: for the test to pass on R-Car Spider, one of the following was required:
> - echo 1048576 > functions/pci_epf_test/func1/pci_epf_test.0/bar2_size
> - apply https://lore.kernel.org/all/20251023072217.901888-1-den@valinux.co.jp/)
I applied this series on top of branch pci/controller/dwc
on Rock 5B (pcie-dw-rockchip.c).
On EP side:
[ 39.218533] pci_epf_test pci_epf_test.0: Can't find MSI domain for EPC
[ 39.219125] pci_epf_test pci_epf_test.0: Using embedded (DMA) doorbell fallback
On RC side:
# RUN pcie_ep_doorbell.DOORBELL_TEST ...
[ 40.297892] pci-endpoint-test 0000:01:00.0: Failed to trigger doorbell in endpoint
# pci_endpoint_test.c:279:DOORBELL_TEST:Expected 0 (0) == ret (-22)
# pci_endpoint_test.c:279:DOORBELL_TEST:Test failed for Doorbell
# DOORBELL_TEST: Test failed
# FAIL pcie_ep_doorbell.DOORBELL_TEST
not ok 23 pcie_ep_doorbell.DOORBELL_TEST
Any suggestions?
(All BARs in pcie-dw-rockchip.c is marked as BAR_RESIZABLE.)
Kind regards,
Niklas
next prev parent reply other threads:[~2026-02-10 12:24 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-09 12:53 [PATCH v6 0/8] PCI: endpoint: pci-ep-msi: Add embedded doorbell fallback Koichiro Den
2026-02-09 12:53 ` [PATCH v6 1/8] dmaengine: dw-edma: Deassert emulated interrupts in the IRQ handler Koichiro Den
2026-02-09 16:05 ` Frank Li
2026-02-09 12:53 ` [PATCH v6 2/8] dmaengine: dw-edma: Cache per-channel IRQ and emulation doorbell offset Koichiro Den
2026-02-09 16:13 ` Frank Li
2026-02-10 1:48 ` Koichiro Den
2026-02-09 12:53 ` [PATCH v6 3/8] PCI: endpoint: Add auxiliary resource query API Koichiro Den
2026-02-09 15:59 ` Frank Li
2026-02-09 12:53 ` [PATCH v6 4/8] PCI: dwc: Record integrated eDMA register window Koichiro Den
2026-02-09 12:53 ` [PATCH v6 5/8] PCI: dwc: ep: Report integrated eDMA resources via EPC aux-resource API Koichiro Den
2026-02-09 12:53 ` [PATCH v6 6/8] PCI: endpoint: pci-epf-test: Don't free doorbell IRQ unless requested Koichiro Den
2026-02-09 15:57 ` Frank Li
2026-02-10 1:54 ` Koichiro Den
2026-02-10 12:36 ` Niklas Cassel
2026-02-10 13:54 ` Koichiro Den
2026-02-10 16:38 ` Niklas Cassel
2026-02-11 16:08 ` Koichiro Den
2026-02-09 12:53 ` [PATCH v6 7/8] PCI: endpoint: pci-ep-msi: Fix error unwind and prevent double alloc Koichiro Den
2026-02-09 15:53 ` Frank Li
2026-02-09 12:53 ` [PATCH v6 8/8] PCI: endpoint: pci-ep-msi: Add embedded doorbell fallback Koichiro Den
2026-02-09 15:51 ` Frank Li
2026-02-10 2:10 ` Koichiro Den
2026-02-10 15:16 ` Frank Li
2026-02-10 12:24 ` Niklas Cassel [this message]
2026-02-10 14:07 ` [PATCH v6 0/8] " Koichiro Den
2026-02-10 16:30 ` Niklas Cassel
2026-02-11 15:57 ` Koichiro Den
2026-02-11 16:52 ` Niklas Cassel
2026-02-12 3:26 ` Koichiro Den
2026-02-12 10:26 ` Niklas Cassel
2026-02-12 15:14 ` Koichiro Den
2026-02-12 15:38 ` Niklas Cassel
2026-02-12 16:31 ` Koichiro Den
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