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
WARNING: multiple messages have this Message-ID (diff)
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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-09-11 22:09 UTC|newest] Thread overview: 66+ 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 0/5] Add RC-to-EP doorbell with platform MSI controller Frank Li 2023-09-11 22:09 ` [PATCH v2 1/5] PCI: endpoint: Add RC-to-EP doorbell support using " Frank Li 2023-09-11 22:09 ` Frank Li 2023-09-29 9:30 ` Kishon Vijay Abraham I 2023-09-29 9:30 ` Kishon Vijay Abraham I 2023-09-29 14:39 ` Frank Li 2023-09-29 14:39 ` Frank Li 2023-10-17 18:37 ` Manivannan Sadhasivam 2023-10-17 18:37 ` Manivannan Sadhasivam 2023-10-17 18:55 ` Frank Li 2023-10-17 18:55 ` Frank Li 2023-10-19 15:04 ` Manivannan Sadhasivam 2023-10-19 15:04 ` Manivannan Sadhasivam 2023-10-19 16:00 ` Frank Li 2023-10-19 16:00 ` Frank Li 2023-10-19 17:23 ` Manivannan Sadhasivam 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 2023-10-19 18:11 ` Frank Li 2023-10-20 17:12 ` Manivannan Sadhasivam 2023-10-20 17:12 ` Manivannan Sadhasivam 2023-10-20 18:00 ` Frank Li 2023-10-20 18:00 ` Frank Li 2023-10-20 18:10 ` Manivannan Sadhasivam 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 ` Frank Li 2023-09-11 22:09 ` [PATCH v2 3/5] PCI: endpoint: pci-epf-test: add doorbell test Frank Li 2023-09-11 22:09 ` Frank Li 2023-09-29 9:33 ` Kishon Vijay Abraham I 2023-09-29 9:33 ` Kishon Vijay Abraham I 2023-09-29 14:26 ` Frank Li 2023-09-29 14:26 ` Frank Li 2023-10-20 17:44 ` Manivannan Sadhasivam 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 2023-09-11 22:09 ` Frank Li 2023-10-20 17:53 ` Manivannan Sadhasivam 2023-10-20 17:53 ` Manivannan Sadhasivam 2023-10-20 18:01 ` Manivannan Sadhasivam 2023-10-20 18:01 ` Manivannan Sadhasivam 2023-10-20 18:07 ` Frank Li 2023-10-20 18:07 ` Frank Li 2023-10-20 18:26 ` Manivannan Sadhasivam 2023-10-20 18:26 ` Manivannan Sadhasivam 2023-10-30 18:33 ` Frank Li 2023-10-30 18:33 ` Frank Li 2023-11-02 17:58 ` Manivannan Sadhasivam 2023-11-02 17:58 ` Manivannan Sadhasivam 2023-11-09 4:44 ` Kishon Vijay Abraham I 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 2023-09-11 22:09 ` Frank Li 2023-10-20 17:55 ` Manivannan Sadhasivam 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 2023-09-20 21:39 ` Frank Li 2023-09-30 9:02 ` Manivannan Sadhasivam 2023-09-30 9:02 ` Manivannan Sadhasivam 2023-10-10 14:21 ` Frank Li 2023-10-10 14:21 ` Frank Li 2023-10-16 14:50 ` Frank Li 2023-10-16 14:50 ` Frank Li 2023-10-16 17:16 ` Manivannan Sadhasivam 2023-10-16 17:16 ` Manivannan Sadhasivam
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