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update vlan.md

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This commit is contained in:
Mark H. Spatz
2026-03-08 19:49:37 -04:00
parent 16f4e2a1c6
commit 893dcd8fcf
1 changed files with 5 additions and 3 deletions
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doc/vlan.md
+5 -3
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@@ -33,8 +33,8 @@ An entry is deleted by adding an invalid entry (00 instead of 0x02 in
RTL837x_TBL_DATA_IN_A).
A port is assigned a PVID by setting the PVID-bits of the corresponding
register of the port. 2 ports share a register. One port uses the higher
16 bits, the other (even ports) use the lower. The base register is
register of the port. 2 ports share a register. An odd port uses bits [23:12],
an even port uses bits [11:0]. The base register is
RTL837x_PVID_BASE_REG (0x4e1c) and the registers go to 0x4e2c so that also
the CPU-Port may have a PVID.
@@ -51,7 +51,9 @@ registers 0x1238, 0x1338, ...
The code currently provides the following functions:
```
void port_pvid_set(uint8_t port, __xdata uint16_t pvid) __banked;
void vlan_create(uint16_t vlan, uint16_t members, uint16_t tagged) __banked;
uint16_t port_pvid_get(uint8_t port) __banked;
void vlan_create(void) __banked; // reads from global vlan_settings
int8_t vlan_get(register uint16_t vlan) __banked; // returns data in sfr_data
void vlan_delete(uint16_t vlan) __banked;
```