From: Kishon Vijay Abraham I <kishon@ti.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Joao Pinto <Joao.Pinto@synopsys.com>, <linux-doc@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-pci@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Cc: <hch@infradead.org>, <nsekhar@ti.com>, <kishon@ti.com>
Subject: [PATCH v3 06/23] Documentation: PCI: Add specification for the *pci test* function device
Date: Thu, 9 Mar 2017 13:27:17 +0530 [thread overview]
Message-ID: <1489046254-19919-7-git-send-email-kishon@ti.com> (raw)
In-Reply-To: <1489046254-19919-1-git-send-email-kishon@ti.com>
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 f84a23c..4e5a283 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 0000000..1324376
--- /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.
--
1.7.9.5
next prev parent reply other threads:[~2017-03-09 8:06 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-09 7:57 [PATCH v3 00/23] PCI: Support for configurable PCI endpoint Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 01/23] PCI: endpoint: Add EP core layer to enable EP controller and EP functions Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 02/23] Documentation: PCI: Guide to use PCI Endpoint Core Layer Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 03/23] PCI: endpoint: Introduce configfs entry for configuring EP functions Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 04/23] Documentation: PCI: Guide to use pci endpoint configfs Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 05/23] PCI: endpoint: Create configfs entry for EPC device and EPF driver Kishon Vijay Abraham I
2017-03-09 7:57 ` Kishon Vijay Abraham I [this message]
2017-03-09 7:57 ` [PATCH v3 07/23] PCI: endpoint: functions: Add an EP function to test PCI Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 08/23] Documentation: PCI: Add binding documentation for pci-test endpoint function Kishon Vijay Abraham I
2017-03-09 21:59 ` Rami Rosen
2017-03-10 13:09 ` Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 09/23] PCI: dwc: designware: Add EP mode support Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 10/23] dt-bindings: PCI: Add dt bindings for pci designware EP mode Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 11/23] PCI: dwc: dra7xx: Facilitate wrapper and msi interrupts to be enabled independently Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 12/23] PCI: dwc: dra7xx: Add EP mode support Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 13/23] dt-bindings: PCI: dra7xx: Add dt bindings for pci dra7xx EP mode Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 14/23] PCI: dwc: dra7xx: Workaround for errata id i870 Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 15/23] dt-bindings: PCI: dra7xx: Add dt bindings to enable unaligned access Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 16/23] PCI: Add device IDs for DRA74x and DRA72x Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 17/23] misc: Add host side pci driver for pci test function device Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 18/23] Documentation: misc-devices: Add Documentation for pci-endpoint-test driver Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 19/23] tools: PCI: Add a userspace tool to test PCI endpoint Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 20/23] tools: PCI: Add sample test script to invoke pcitest Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 21/23] Documentation: PCI: Add userguide for PCI endpoint test function Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 22/23] MAINTAINERS: add PCI EP maintainer Kishon Vijay Abraham I
2017-03-09 7:57 ` [PATCH v3 23/23] ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP Kishon Vijay Abraham I
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