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1. Before You Begin
2. Introduction
3. Functional Description
4. Interface Overview
5. Parameters (H-Tile)
6. Parameters (P-Tile) (F-Tile) (R-Tile)
7. Designing with the IP Core
8. Software Programming Model
9. Registers
10. Troubleshooting/Debugging
11. Multi Channel DMA Intel FPGA IP for PCI Express User Guide Archives
12. Revision History for the Multi Channel DMA Intel FPGA IP for PCI Express User Guide
3.1. Multi Channel DMA
3.2. Bursting Avalon-MM Master (BAM)
3.3. Bursting Avalon-MM Slave (BAS)
3.4. MSI Interrupt
3.5. Config Slave (CS)
3.6. Root Port Address Translation Table Enablement
3.7. Hard IP Reconfiguration Interface
3.8. Config TL Interface
3.9. Configuration Intercept Interface (EP Only)
3.10. Data Mover Only
4.1. Port List
4.2. Clocks
4.3. Resets
4.4. Multi Channel DMA
4.5. Bursting Avalon-MM Master (BAM) Interface
4.6. Bursting Avalon-MM Slave (BAS) Interface
4.7. Legacy Interrupt Interface
4.8. MSI Interface
4.9. Config Slave Interface (RP only)
4.10. Hard IP Reconfiguration Interface
4.11. Config TL Interface
4.12. Configuration Intercept Interface (EP Only)
4.13. Data Mover Interface
4.14. Hard IP Status Interface
4.15. Precision Time Management (PTM) Interface
8.1.6.1. ifc_api_start
8.1.6.2. ifc_mcdma_port_by_name
8.1.6.3. ifc_qdma_device_get
8.1.6.4. ifc_num_channels_get
8.1.6.5. ifc_qdma_channel_get
8.1.6.6. ifc_qdma_acquire_channels
8.1.6.7. ifc_qdma_release_all_channels
8.1.6.8. ifc_qdma_device_put
8.1.6.9. ifc_qdma_channel_put
8.1.6.10. ifc_qdma_completion_poll
8.1.6.11. ifc_qdma_request_start
8.1.6.12. ifc_qdma_request_prepare
8.1.6.13. ifc_qdma_descq_queue_batch_load
8.1.6.14. ifc_qdma_request_submit
8.1.6.15. ifc_qdma_pio_read32
8.1.6.16. ifc_qdma_pio_write32
8.1.6.17. ifc_qdma_pio_read64
8.1.6.18. ifc_qdma_pio_write64
8.1.6.19. ifc_qdma_pio_read128
8.1.6.20. ifc_qdma_pio_write128
8.1.6.21. ifc_qdma_pio_read256
8.1.6.22. ifc_qdma_pio_write256
8.1.6.23. ifc_request_malloc
8.1.6.24. ifc_request_free
8.1.6.25. ifc_app_stop
8.1.6.26. ifc_qdma_poll_init
8.1.6.27. ifc_qdma_poll_add
8.1.6.28. ifc_qdma_poll_wait
8.1.6.29. ifc_mcdma_port_by_name
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3.1.9. Control Registers
The Multi Channel DMA IP for PCI Express provides 4 MB of control register space that is internally mapped to PCIe BAR0. The control register block contains all the required registers to support the DMA operations. This includes QCSR space for individual queue control, MSI-X for interrupt generations, and GCSR for general global information.
The following table shows 4MB space mapped for each function in PCIe config space through BAR0.
Address Space | Range | Size | Description |
---|---|---|---|
QCSR (D2H, H2D) | 22’h00_0000 - 22’h0F_FFFF | 1 MB | Individual queue control and status registers, up to 2048 D2H and 2048 H2D queues |
MSI-X (Table and PBA) | 22’h10_0000 - 22’h1F_FFFF | 1 MB | MSI-X Table and PBA space |
GCSR | 22’h20_0000 - 22’h2F_FFFF | 1 MB | General DMA control and status registers. Only for PF0. |
Reserved | 22’h30_0000 – 22’h3F_FFFF | 1MB | Reserved |
Note: For more information on Control registers, refer to Control Register (GCSR)