Visible to Intel only — GUID: zjw1695945943639
Ixiasoft
Visible to Intel only — GUID: zjw1695945943639
Ixiasoft
6.2.5. MCDMA Settings
![](/content/dam/docs/us/en/683821/24-2/idr1720641897117.png)
Parameter | Value | Default Value | Description |
---|---|---|---|
BAR2 Address Width |
128 Bytes - 8 Bytes |
4 Mbytes – 22 bits |
Address width for PIO AVMM port. Default address width is 22 bits |
User Mode |
Multi channel DMA Bursting Master Bursting Slave BAM+BAS BAM+MCDMA BAM+BAS+MCDMA Data Mover Only |
Multi channel DMA |
This option allows user to configure the mode of operation for MCDMA IP. MCDMA mode has the DMA functionality. BAM and BAS offer Bursting Master and Slave AVMM capabilities without DMA functionality
Note: In R-Tile 4x4, Port 2 and 3 only support BAM, BAS and BAM+BAS user mode.
Note: MCDMA R/P/F-Tile IP in x4 topology does not support Data Mover Only Mode.
|
Interface type |
AVMM AVST |
AVMM |
User logic interface type for D2HDM and H2DDM. Default: Avalon-MM Interface |
Number of ports |
1 |
1 |
Number of ports for AVMM and AVST interface is 1. |
Enable 32-bit PIO |
On / Off |
Off |
Enables or disables the 32-bit PIO design examples.
Note: This parameter is only available for the R-Tile MCDMA IP and F-Tile MCDMA IP.
|
Enable User-MSIX |
On / Off |
Off |
User MSI-X is enables user application to initiate interrupts through MCDMA, this option is available only if the user selects MCDMA mode |
Enable User-FLR |
On / Off |
Off |
User FLR, interface allows passing of FLR signals to the user side application
Note: This parameter is not supported for R-Tile MCDMA IP x4 Endpoint Ports 2 and 3
|
D2H Prefetch channels |
8 16 32 64 128 256 |
8 |
Sets the D2H Prefetch channels In the current release, the D2H Prefetch Channels parameter follows the total number of DMA channels that you select in the IP Parameter Editor up to 256 total channels. When the total number of channels selected is greater than 256, then D2H Prefetch channels are automatically fixed to 64.
Note: This parameter applicable to AVST 1 port interface only.
|
Maximum Descriptor Fetch |
16 32 64 |
16 |
Sets the maximum descriptors that are fetched per D2H prefetch channel.
Note: This parameter is applicable to AVST 1 port interface only.
|
Enable Metadata |
On / Off |
Off |
Enables Metadata
Note: This parameter is only available when the Interface Type is set to AVST.
|
Enable Configuration Intercept Interface |
On / Off |
Off |
Select to enable configuration intercept interface. |
Enable 10-bit tag support |
On / Off |
Off |
This parameter is available for the following user modes: MCDMA, Bursting Slave, BAM+BAS, BAM+MCDMA and BAM+BAS+MCDMA
Note: This parameter is not supported for R-tile. 10-bit tag is set to On by the IP.
|
Enable address byte aligned transfer |
On / Off |
Off |
This is the option to enable the Byte aligned address mode support needed for Kernel or DPDK drivers and DMA makes no assumption on the alignment of data w.r.t to address.
Note: This parameter is only available when the Interface Type is set to AVST.
|
Enable MSI Capability |
On / Off |
Off |
Enables or disables MSI capability for BAS.
Note: This parameter is only available when User Mode is set to BAS or BAM+BAS.
Note: This parameter is not supported for R-Tile MCDMA IP x4 Endpoint Ports 2 and 3
|
Enable MSI 64-bit addressing |
On / Off |
Off |
Enables or disables 64-bit MSI addressing. |
Number of MSI Messages Requested |
1 2 4 8 16 32 |
1 |
Sets the number of messages that the application can request in the multiple message capable field of the Message Control register. |
Enable MSI Extended Data Capability |
On / Off |
Off |
Enables or disables MSI extended data capability. |
Export pld_warm_rst_rdy and link_req_rst_n interface to top level |
On / Off |
Off |
Exports pld_warm_rst_rdy and link_req_rst_n interface to top level.
Note: This parameter is not available in R-Tile MCDMA IP.
|
Parameter | Value | Default Value | Description |
---|---|---|---|
Enable ATT |
On / Off |
Off |
Enables ATT for BAS |
ATT Table Address Width |
1 - 9 |
3 |
Sets depth of ATT. Depth is equal to 2 to the power of number entered. |
ATT Window Address Width |
10 - 63 |
16 |
Sets the number of BAS address bits to be used directly. |