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Groups > linux.kernel > #1599452
| From | Kishon Vijay Abraham I <kishon@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v4 06/23] Documentation: PCI: Add specification for the *pci test* function device |
| Date | 2017-03-13 15:40 +0100 |
| Message-ID | <tkziG-1PZ-19@gated-at.bofh.it> (permalink) |
| References | <tkz8Z-1Mu-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Add specification for the *pci test* virtual function device. The endpoint function driver and the host pci driver should be created based on this specification. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- Documentation/PCI/00-INDEX | 2 + Documentation/PCI/endpoint/pci-test-function.txt | 66 ++++++++++++++++++++++++ 2 files changed, 68 insertions(+) create mode 100644 Documentation/PCI/endpoint/pci-test-function.txt diff --git a/Documentation/PCI/00-INDEX b/Documentation/PCI/00-INDEX index f84a23c7c74b..4e5a2832f4e7 100644 --- a/Documentation/PCI/00-INDEX +++ b/Documentation/PCI/00-INDEX @@ -16,3 +16,5 @@ endpoint/pci-endpoint.txt - guide to add endpoint controller driver and endpoint function driver. endpoint/pci-endpoint-cfs.txt - guide to use configfs to configure the pci endpoint function. +endpoint/pci-test-function.txt + - specification of *pci test* function device. diff --git a/Documentation/PCI/endpoint/pci-test-function.txt b/Documentation/PCI/endpoint/pci-test-function.txt new file mode 100644 index 000000000000..1324376ec6a3 --- /dev/null +++ b/Documentation/PCI/endpoint/pci-test-function.txt @@ -0,0 +1,66 @@ + PCI TEST + Kishon Vijay Abraham I <kishon@ti.com> + +Traditionally PCI RC has always been validated by using standard +PCI cards like ethernet PCI cards or USB PCI cards or SATA PCI cards. +However with the addition of EP-core in linux kernel, it is possible +to configure a PCI controller that can operate in EP mode to work as +a test device. + +The PCI endpoint test device is a virtual device (defined in software) +used to test the endpoint functionality and serve as a sample driver +for other PCI endpoint devices (to use the EP framework). + +The PCI endpoint test device has the following registers: + + 1) PCI_ENDPOINT_TEST_MAGIC + 2) PCI_ENDPOINT_TEST_COMMAND + 3) PCI_ENDPOINT_TEST_STATUS + 4) PCI_ENDPOINT_TEST_SRC_ADDR + 5) PCI_ENDPOINT_TEST_DST_ADDR + 6) PCI_ENDPOINT_TEST_SIZE + 7) PCI_ENDPOINT_TEST_CHECKSUM + +*) PCI_ENDPOINT_TEST_MAGIC + +This register will be used to test BAR0. A known pattern will be written +and read back from MAGIC register to verify BAR0. + +*) PCI_ENDPOINT_TEST_COMMAND: + +This register will be used by the host driver to indicate the function +that the endpoint device must perform. + +Bitfield Description: + Bit 0 : raise legacy irq + Bit 1 : raise MSI irq + Bit 2 - 7 : MSI interrupt number + Bit 8 : read command (read data from RC buffer) + Bit 9 : write command (write data to RC buffer) + Bit 10 : copy command (copy data from one RC buffer to another + RC buffer) + +*) PCI_ENDPOINT_TEST_STATUS + +This register reflects the status of the PCI endpoint device. + +Bitfield Description: + Bit 0 : read success + Bit 1 : read fail + Bit 2 : write success + Bit 3 : write fail + Bit 4 : copy success + Bit 5 : copy fail + Bit 6 : irq raised + Bit 7 : source address is invalid + Bit 8 : destination address is invalid + +*) PCI_ENDPOINT_TEST_SRC_ADDR + +This register contains the source address (RC buffer address) for the +COPY/READ command. + +*) PCI_ENDPOINT_TEST_DST_ADDR + +This register contains the destination address (RC buffer address) for +the COPY/WRITE command. -- 2.11.0
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[GIT PULL 00/23] PCI: Support for configurable PCI endpoint Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 16/23] PCI: Add device IDs for DRA74x and DRA72x Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 14/23] PCI: dwc: dra7xx: Workaround for errata id i870 Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 15/23] dt-bindings: PCI: dra7xx: Add dt bindings to enable unaligned access Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 07/23] PCI: endpoint: functions: Add an EP function to test PCI Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 19/23] tools: PCI: Add a userspace tool to test PCI endpoint Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 13/23] dt-bindings: PCI: dra7xx: Add dt bindings for pci dra7xx EP mode Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 09/23] PCI: dwc: designware: Add EP mode support Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 08/23] Documentation: PCI: Add binding documentation for pci-test endpoint function Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 23/23] ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 17/23] misc: Add host side pci driver for pci test function device Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 22/23] MAINTAINERS: add PCI EP maintainer Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 18/23] Documentation: misc-devices: Add Documentation for pci-endpoint-test driver Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 20/23] tools: PCI: Add sample test script to invoke pcitest Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 12/23] PCI: dwc: dra7xx: Add EP mode support Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 21/23] Documentation: PCI: Add userguide for PCI endpoint test function Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 02/23] Documentation: PCI: Guide to use PCI Endpoint Core Layer Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:30 +0100 [PATCH v4 10/23] dt-bindings: PCI: Add dt bindings for pci designware EP mode Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:40 +0100 [PATCH v4 06/23] Documentation: PCI: Add specification for the *pci test* function device Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:40 +0100 [PATCH v4 11/23] PCI: dwc: dra7xx: Facilitate wrapper and msi interrupts to be enabled independently Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:40 +0100 [PATCH v4 04/23] Documentation: PCI: Guide to use pci endpoint configfs Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:40 +0100 [PATCH v4 03/23] PCI: endpoint: Introduce configfs entry for configuring EP functions Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:40 +0100 [PATCH v4 05/23] PCI: endpoint: Create configfs entry for EPC device and EPF driver Kishon Vijay Abraham I <kishon@ti.com> - 2017-03-13 15:40 +0100
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