Linux/AM5726: CPSW driver prioritization support?

Hi Michael,

It seems that this is supported. See drivers/net/ethernet/ti/cpsw.c:

#define RX_PRIORITY_MAPPING 0x76543210
#define TX_PRIORITY_MAPPING 0x33221100
#define CPDMA_TX_PRIORITY_MAP 0x01234567

/* CPSW_PORT_V1 */
#define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */

/* CPSW_PORT_V2 */
#define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */

/* CPSW_PORT_V2 only */
#define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */
#define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */

/* Bit definitions for the CPSW2_CONTROL register */
#define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
#define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
#define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
#define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */

cpsw_init_host_port() ->
/* setup host port priority mapping */
__raw_writel(CPDMA_TX_PRIORITY_MAP,
&cpsw->host_port_regs->cpdma_tx_pri_map);
__raw_writel(0, &cpsw->host_port_regs->cpdma_rx_chan_map);



Best Regards,
Yordan