Linux/AM5716: Problems with VLAN0 in Dual EMAC mode

Sorry for the resolving mistakes :)

There is a tool in the TI file system called switch-config that allows you to dump the contents of the ALE.

This is the source to the tool that shows how to access the ALE that could be used in an application.
git.ti.com/.../

Ideally you should not have to modify the driver. Could you post switch-config -d to the link? Could you explain what you are trying to do with your application and why you need VLAN0?

I can't get an output of the faulty behaviour right now of switch-config -d, because i am a bit busy. This is the current output of switch-config -d, but I guess it's useless because of the hard coded fix in cpsw.c (avoided to start the VLAN Aware Mode).

cpsw hw version 1.15 (0)
0 : type: vlan , vid = 2, untag_force = 0x5, reg_mcast = 0x5, unreg_mcast = 0x1, member_list = 0x5
1 : type: mcast, vid = 2, addr = ff:ff:ff:ff:ff:ff, mcast_state = f, no super, port_mask = 0x5
2 : type: ucast, vid = 2, addr = fc:0f:4b:6e:2d:79, ucast_type = persistant, port_num = 0x0, Secure
3 : type: vlan , vid = 0, untag_force = 0x7, reg_mcast = 0x0, unreg_mcast = 0x1, member_list = 0x7
4 : type: mcast, vid = 2, addr = 01:00:5e:00:00:01, mcast_state = f, no super, port_mask = 0x5
5 : type: mcast, vid = 2, addr = 33:33:00:00:00:01, mcast_state = f, no super, port_mask = 0x5
6 : type: vlan , vid = 1, untag_force = 0x3, reg_mcast = 0x3, unreg_mcast = 0x1, member_list = 0x3
7 : type: mcast, vid = 1, addr = ff:ff:ff:ff:ff:ff, mcast_state = f, no super, port_mask = 0x3
8 : type: ucast, vid = 1, addr = fc:0f:4b:6d:2d:79, ucast_type = persistant, port_num = 0x0, Secure
9 : type: mcast, vid = 1, addr = 33:33:00:00:00:01, mcast_state = f, no super, port_mask = 0x3
10 : type: mcast, vid = 1, addr = 01:00:5e:00:00:01, mcast_state = f, no super, port_mask = 0x3
11 : type: mcast, vid = 2, addr = 33:33:ff:6e:2d:79, mcast_state = f, no super, port_mask = 0x5
12 : type: mcast, vid = 2, addr = 33:33:00:00:00:fb, mcast_state = f, no super, port_mask = 0x5
13 : type: mcast, vid = 2, addr = 33:33:00:01:00:03, mcast_state = f, no super, port_mask = 0x5
17 : type: ucast, addr = 28:63:36:81:3d:c1, ucast_type = touched , port_num = 0x2
23 : type: ucast, addr = 68:05:ca:36:4e:7c, ucast_type = untouched , port_num = 0x2
27 : type: ucast, addr = 00:90:68:00:d3:a0, ucast_type = untouched , port_num = 0x2
32 : type: ucast, addr = 00:0e:8c:f3:15:1c, ucast_type = untouched , port_num = 0x2
35 : type: ucast, addr = fc:0f:4b:6e:2d:79, ucast_type = untouched , port_num = 0x0
36 : type: ucast, addr = 00:1b:1b:23:81:36, ucast_type = touched , port_num = 0x2
52 : type: ucast, addr = 00:1b:1b:0e:9e:64, ucast_type = touched , port_num = 0x2
71 : type: ucast, addr = fc:0f:4b:6e:2d:7a, ucast_type = untouched , port_num = 0x0

This is how I avoided to start VLAN Aware Mode in cpsw.c:
static void cpsw_init_host_port(struct cpsw_priv *priv)
{
u32 fifo_mode;
// u32 control_reg;
struct cpsw_common *cpsw = priv->cpsw;

/* soft reset the controller and initialize ale */
soft_reset("cpsw", &cpsw->regs->soft_reset);
cpsw_ale_start(cpsw->ale);

/* switch to vlan unaware mode */
// cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
CPSW_ALE_VLAN_AWARE);
// control_reg = readl(&cpsw->regs->control);
// control_reg |= CPSW_VLAN_AWARE;
// writel(control_reg, &cpsw->regs->control);
…



How can I set the ALE_CONTROL register without modiying the driver?

Hi,
For experimentation purposes there is another utility called omapconf. Using the -h option will show a lot commands so you may want to try piping it to more with " omapconf --help| more". Take a look at these two commands in the help "omapconf write ..." or " omapconf set bit ...."

Please let me know if that works.

Regards,
Schuyler