From: Frank Li <Frank.Li@nxp.com>
To: manivannan.sadhasivam@linaro.org
Cc: Frank.li@nxp.com, aisheng.dong@nxp.com, bhelgaas@google.com,
devicetree@vger.kernel.org, festevam@gmail.com,
imx@lists.linux.dev, jdmason@kudzu.us, kernel@pengutronix.de,
kishon@kernel.org, kw@linux.com,
linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
lorenzo.pieralisi@arm.com, lpieralisi@kernel.org, maz@kernel.org,
s.hauer@pengutronix.de, shawnguo@kernel.org, tglx@linutronix.de
Subject: [PATCH v2 0/5] Add RC-to-EP doorbell with platform MSI controller
Date: Mon, 11 Sep 2023 18:09:15 -0400 [thread overview]
Message-ID: <20230911220920.1817033-1-Frank.Li@nxp.com> (raw)
┌────────────┐ ┌───────────────────────────────────┐ ┌────────────────┐
│ │ │ │ │ │
│ │ │ PCI Endpoint │ │ PCI Host │
│ │ │ │ │ │
│ │◄──┤ 1.platform_msi_domain_alloc_irqs()│ │ │
│ │ │ │ │ │
│ MSI ├──►│ 2.write_msi_msg() ├──►├─BAR<n> │
│ Controller │ │ update doorbell register address│ │ │
│ │ │ for BAR │ │ │
│ │ │ │ │ 3. Write BAR<n>│
│ │◄──┼───────────────────────────────────┼───┤ │
│ │ │ │ │ │
│ ├──►│ 4.Irq Handle │ │ │
│ │ │ │ │ │
│ │ │ │ │ │
└────────────┘ └───────────────────────────────────┘ └────────────────┘
This patches based on old https://lore.kernel.org/imx/20221124055036.1630573-1-Frank.Li@nxp.com/
Original patch only target to vntb driver. But actually it is common
method.
This patches add new API to pci-epf-core, so any EP driver can use it.
The key point is comments from Thomas Gleixner, who suggest use new
PCI/IMS. But arm platform change still not be merged yet.
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git devmsi-v2-arm
So I still use existed method implement RC to EP doorbell.
If Thomas Gleixner want to continue work on devmsi-v2-arm, I can help test
and update this patch.
Change from v1 to v2
- Add missed patch for endpont/pci-epf-test.c
- Move alloc and free to epc driver from epf.
- Provide general help function for EPC driver to alloc platform msi irq.
- Fixed manivannan's comments.
Frank Li (5):
PCI: endpoint: Add RC-to-EP doorbell support using platform MSI
controller
PCI: dwc: add doorbell support by use MSI controller
PCI: endpoint: pci-epf-test: add doorbell test
misc: pci_endpoint_test: Add doorbell test case
tools: PCI: Add 'B' option for test doorbell
drivers/misc/pci_endpoint_test.c | 48 +++++
.../pci/controller/dwc/pcie-designware-ep.c | 2 +
drivers/pci/endpoint/functions/pci-epf-test.c | 59 +++++-
drivers/pci/endpoint/pci-epc-core.c | 192 ++++++++++++++++++
drivers/pci/endpoint/pci-epf-core.c | 44 ++++
include/linux/pci-epc.h | 6 +
include/linux/pci-epf.h | 7 +
include/uapi/linux/pcitest.h | 1 +
tools/pci/pcitest.c | 16 +-
9 files changed, 373 insertions(+), 2 deletions(-)
--
2.34.1
next reply other threads:[~2023-09-12 1:47 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-11 22:09 Frank Li [this message]
2023-09-11 22:09 ` [PATCH v2 1/5] PCI: endpoint: Add RC-to-EP doorbell support using platform MSI controller Frank Li
2023-09-29 9:30 ` Kishon Vijay Abraham I
2023-09-29 14:39 ` Frank Li
2023-10-17 18:37 ` Manivannan Sadhasivam
2023-10-17 18:55 ` Frank Li
2023-10-19 15:04 ` Manivannan Sadhasivam
2023-10-19 16:00 ` Frank Li
2023-10-19 17:23 ` Manivannan Sadhasivam
2023-10-19 18:11 ` [PATCH v2 1/5] PCI: endpoint: Add RC-to-EP doorbell support using platform MSI controllery Frank Li
2023-10-20 17:12 ` Manivannan Sadhasivam
2023-10-20 18:00 ` Frank Li
2023-10-20 18:10 ` Manivannan Sadhasivam
2023-09-11 22:09 ` [PATCH v2 2/5] PCI: dwc: add doorbell support by use MSI controller Frank Li
2023-09-11 22:09 ` [PATCH v2 3/5] PCI: endpoint: pci-epf-test: add doorbell test Frank Li
2023-09-29 9:33 ` Kishon Vijay Abraham I
2023-09-29 14:26 ` Frank Li
2023-10-20 17:44 ` Manivannan Sadhasivam
2023-09-11 22:09 ` [PATCH v2 4/5] misc: pci_endpoint_test: Add doorbell test case Frank Li
2023-10-20 17:53 ` Manivannan Sadhasivam
2023-10-20 18:01 ` Manivannan Sadhasivam
2023-10-20 18:07 ` Frank Li
2023-10-20 18:26 ` Manivannan Sadhasivam
2023-10-30 18:33 ` Frank Li
2023-11-02 17:58 ` Manivannan Sadhasivam
2023-11-09 4:44 ` Kishon Vijay Abraham I
2023-09-11 22:09 ` [PATCH v2 5/5] tools: PCI: Add 'B' option for test doorbell Frank Li
2023-10-20 17:55 ` Manivannan Sadhasivam
2023-09-20 21:39 ` [PATCH v2 0/5] Add RC-to-EP doorbell with platform MSI controller Frank Li
2023-09-30 9:02 ` Manivannan Sadhasivam
2023-10-10 14:21 ` Frank Li
2023-10-16 14:50 ` Frank Li
2023-10-16 17:16 ` Manivannan Sadhasivam
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