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1. Introduction
2. Quick Start Guide
3. Interface Overview
4. Parameters
5. Designing with the IP Core
6. Block Descriptions
7. Registers
8. Programming Model for the DMA Descriptor Controller
9. Programming Model for the Avalon® -MM Root Port
10. Avalon-MM Testbench and Design Example
11. Document Revision History
A. PCI Express Core Architecture
B. Root Port Enumeration
C. Troubleshooting and Observing the Link Status
2.1. Design Components
2.2. Hardware and Software Requirements
2.3. Directory Structure
2.4. Generating the Design Example
2.5. Simulating the Design Example
2.6. Compiling the Design Example and Programming the Device
2.7. Installing the Linux Kernel Driver
2.8. Running the Design Example Application
7.1.1. Register Access Definitions
7.1.2. PCI Configuration Header Registers
7.1.3. PCI Express Capability Structures
7.1.4. Intel Defined VSEC Capability Header
7.1.5. Uncorrectable Internal Error Status Register
7.1.6. Uncorrectable Internal Error Mask Register
7.1.7. Correctable Internal Error Status Register
7.1.8. Correctable Internal Error Mask Register
7.2.1.1. Avalon-MM to PCI Express Interrupt Status Registers
7.2.1.2. Avalon-MM to PCI Express Interrupt Enable Registers
7.2.1.3. Address Mapping for High-Performance Avalon-MM 32-Bit Slave Modules
7.2.1.4. PCI Express to Avalon-MM Interrupt Status and Enable Registers for Endpoints
7.2.1.5. PCI Express Configuration Information Registers
10.5.1. ebfm_barwr Procedure
10.5.2. ebfm_barwr_imm Procedure
10.5.3. ebfm_barrd_wait Procedure
10.5.4. ebfm_barrd_nowt Procedure
10.5.5. ebfm_cfgwr_imm_wait Procedure
10.5.6. ebfm_cfgwr_imm_nowt Procedure
10.5.7. ebfm_cfgrd_wait Procedure
10.5.8. ebfm_cfgrd_nowt Procedure
10.5.9. BFM Configuration Procedures
10.5.10. BFM Shared Memory Access Procedures
10.5.11. BFM Log and Message Procedures
10.5.12. Verilog HDL Formatting Functions
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2.7. Installing the Linux Kernel Driver
Before you can test the design example in hardware, you must install the Linux kernel driver. You can use this driver to perform the following tests:
- A PCIe* link test that performs 100 writes and reads
- Memory space DWORD3 reads and writes
- Configuration Space DWORD reads and writes
In addition, you can use the driver to change the value of the following parameters:
- The BAR being used
- The selects device by specifying the bus, device and function (BDF) numbers for the required device
Complete the following steps to install the kernel driver:
- Navigate to ./software/kernel/linux under the example design generation directory.
- Change the permissions on the install, load, and unload files:
$ chmod 777 install load unload
- Install the driver:
$ sudo ./install
- Verify the driver installation:
$ lsmod | grep intel_fpga_pcie_drvExpected result:
intel_fpga_pcie_drv 17792 0
- Verify that Linux recognizes the PCIe* design example:
$ lspci -d 1172:000 -v | grep intel_fpga_pcie_drvNote: If you have changed the Vendor ID, substitute the new Vendor ID for Intel® 'sVendor ID in this command.Expected result:
Kernel driver in use: intel_fpga_pcie_drv
3 Throughout this user guide, the terms word, DWORD and QWORD have the same meaning that they have in the PCI Express Base Specification. A word is 16 bits, a DWORD is 32 bits, and a QWORD is 64 bits.