AM64X Ring Accelerator Device Descriptions¶
Introduction¶
This chapter provides information on the Ring Accelerator devices in the AM64X SoC. Some System Firmware TISCI messages take device specific inputs. This chapter provides information on the valid values for Ring Accelerator TISCI message parameters.
Ring Accelerator Device IDs¶
Some System Firmware TISCI message APIs require the Ring Accelerator device ID be provided as part of the request. Based on AM64X Device IDs these are the valid Ring Accelerator device IDs.
| Ring Accelerator Device Name | Ring Accelerator Device ID |
|---|---|
| AM64X_DEV_DMASS0_BCDMA_0 | 26 |
| AM64X_DEV_DMASS0_PKTDMA_0 | 30 |
| AM64X_DEV_DMASS0_RINGACC_0 | 33 |
Ring Accelerator Ring Indices¶
This section describes valid Ring Accelerator ring indices for each ring type. The ring index and type ID are used in some Ring Accelerator based TISCI messages.
Warning
Resources marked as reserved for use by DMSC cannot be assigned to a host within the RM Board Configuration resource assignment array. The RM Board Configuration is rejected if an overlap with a reserved resource is detected.
DMASS0_BCDMA_0
| Ring Type | Ring Index Range |
|---|---|
| BLOCK_COPY_CHAN | 0 to 27 |
| SPLIT_TR_TX_CHAN | 28 to 47 |
| SPLIT_TR_RX_CHAN | 48 to 67 |
DMASS0_PKTDMA_0
| Ring Type | Ring Index Range |
|---|---|
| UNMAPPED_TX_CHAN | 0 to 15 |
| CPSW_TX_CHAN | 16 to 79 |
| SAUL_TX_0_CHAN (RESERVED BY SYSTEM FIRMWARE) | 80 to 87 |
| SAUL_TX_1_CHAN | 88 to 95 |
| ICSSG_0_TX_CHAN | 96 to 103 |
| ICSSG_1_TX_CHAN | 104 to 111 |
| UNMAPPED_RX_CHAN | 112 to 127 |
| CPSW_RX_CHAN | 128 to 143 |
| SAUL_RX_0_CHAN (RESERVED BY SYSTEM FIRMWARE) | 144 to 151 |
| SAUL_RX_1_CHAN | 144 to 151 |
| SAUL_RX_2_CHAN | 152 to 159 |
| SAUL_RX_3_CHAN | 152 to 159 |
| ICSSG_0_RX_CHAN | 160 to 223 |
| ICSSG_1_RX_CHAN | 224 to 287 |
DMASS0_RINGACC_0
| Ring Type | Ring Index Range |
|---|---|
| GENERIC_IPC | 20 to 31 |