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Add support for changing Ethernet speeds

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logicog
2025-06-29 20:06:53 +02:00
parent b59f51b3ca
commit 6f90e1db53
4 changed files with 181 additions and 22 deletions
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README.md
+85
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@@ -188,4 +188,89 @@ devices, set 8N1 @ 115200 baud and power up the switch.
The device will perform some examples and provide a minimal console, the The device will perform some examples and provide a minimal console, the
documentation of which can be found in the source code rtlplayground.c`. documentation of which can be found in the source code rtlplayground.c`.
## The command line
The command line is very rudimentary and mostly for testing purposes.
The following is a boot-log with some examples:
```
Detecting CPU
RTL8373 detected
Starting up...
Flash controller
NIC reset
rtl8372_init called
RTL837X_REG_SDS_MODES: 0x00000bed
phy_config_8224 called
phy_config_8224 done
rtl8224_phy_enable called
rtl8224_phy_enable done
X
rtl8372_init done
A minimal prompt to explore the RTL8372:
CPU detected: RTL8373
Clock register: 0x00001101
Register 0x7b20/RTL837X_REG_SDS_MODES: 0x00000bed
Verifying PHY settings:
Port State Link TxGood TxBad RxGood RxBad
1 On Down 0x00000000 0x00000000 0x00000000 0x00000000
2 On Down 0x00000000 0x00000000 0x00000000 0x00000000
3 On Down 0x00000000 0x00000000 0x00000000 0x00000000
4 On Down 0x00000000 0x00000000 0x00000000 0x00000000
5 On 2.5G 0x00000008 0x00000000 0x00000000 0x00000000
6 On Down 0x00000000 0x00000000 0x00000000 0x00000000
7 On Down 0x00000000 0x00000000 0x00000000 0x00000000
8 On Down 0x00000000 0x00000000 0x00000000 0x00000000
9 NO SFP Down 0x00000000 0x00000000 0x00000000 0x00000000
> port 5 1g
CMD: port 5 1g
PORT 04 1G
> stat
CMD: stat
Port State Link TxGood TxBad RxGood RxBad
1 On Down 0x00000000 0x00000000 0x00000000 0x00000000
2 On Down 0x00000000 0x00000000 0x00000000 0x00000000
3 On Down 0x00000000 0x00000000 0x00000000 0x00000000
4 On Down 0x00000000 0x00000000 0x00000000 0x00000000
5 On 1000M 0x00000035 0x00000000 0x00000017 0x00000000
6 On Down 0x00000000 0x00000000 0x00000000 0x00000000
7 On Down 0x00000000 0x00000000 0x00000000 0x00000000
8 On Down 0x00000000 0x00000000 0x00000000 0x00000000
9 NO SFP Down 0x00000000 0x00000000 0x00000000 0x00000000
>
<SFP-RX OK>
<MODULE INSERTED> Rate: 67 Encoding: 01
Lightron Inc. WSPXG-ES3LC-IHA 0000
> stat
CMD: stat
Port State Link TxGood TxBad RxGood RxBad
1 On Down 0x00000000 0x00000000 0x00000000 0x00000000
2 On Down 0x00000000 0x00000000 0x00000000 0x00000000
3 On Down 0x00000000 0x00000000 0x00000000 0x00000000
4 On Down 0x00000000 0x00000000 0x00000000 0x00000000
5 On 1000M 0x00000065 0x00000000 0x0000003b 0x00000000
6 On Down 0x00000000 0x00000000 0x00000000 0x00000000
7 On Down 0x00000000 0x00000000 0x00000000 0x00000000
8 On Down 0x00000000 0x00000000 0x00000000 0x00000000
9 SFP OK 10G 0x00000000 0x00000000 0x0000001c 0x00000000
> sfp
CMD: sfp
Rate: 67 Encoding: 01
Lightron Inc. WSPXG-ES3LC-IHA 0000
```
Enjoy playing! Enjoy playing!
rtl837x_phy.c
+52 -1
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@@ -4,10 +4,13 @@
* This code is in the Public Domain * This code is in the Public Domain
*/ */
// #define REGDBG
#include <stdint.h> #include <stdint.h>
#include "rtl837x_common.h" #include "rtl837x_common.h"
#include "rtl837x_sfr.h" #include "rtl837x_sfr.h"
#include "rtl837x_regs.h" #include "rtl837x_regs.h"
#include "rtl837x_phy.h"
#pragma codeseg BANK1 #pragma codeseg BANK1
@@ -37,7 +40,7 @@ P000001.1e000400:c45c P000001.1e0003f8:c18c p001e.03f8:418c
*/ */
__code uint16_t rtl8224_ca[41] = { __code uint16_t rtl8224_ca[42] = {
0x4480, 0xc842, 0x4480, 0xc842,
0x0400, 0xc9c2, 0x0400, 0xc9c2,
0x6d02, 0xcc42, 0x6d02, 0xcc42,
@@ -306,3 +309,51 @@ void phy_config_8224(void) __banked
print_string("\r\nphy_config_8224 done\r\n"); print_string("\r\nphy_config_8224 done\r\n");
} }
/*
* Set Speed, duplex and flow control mode of a PHY
* See e.g. RTL8221B datasheet
*/
void phy_set_mode(uint8_t port, uint8_t speed, uint8_t flow_control, uint8_t duplex) __banked
{
uint16_t v;
phy_read(port, 0x1f, 0xa610);
v = (((uint16_t)SFR_DATA_8) << 8) | SFR_DATA_0;
if (speed == PHY_OFF) {
phy_write(bit_mask[port], 0x1f, 0xa4610, v | 0x0800);
return;
}
// Port is on, make sure of it:
if (v & 0x0800)
phy_write(bit_mask[port], 0x1f, 0xa4610, v & 0xf7ff);
if (speed == PHY_SPEED_AUTO) {
// AN Advertisement Register (MMD 7.0x0010)
phy_write(bit_mask[port], 0x07, 0x10, 0x1001); // bits 0-4: 0x1 (802.3 supported), Extended Next Page format used
// Multi-GBASE-TBASE-T AN Control 1 Register (MMD 7.0x0020)
phy_write(bit_mask[port], 0x07, 0x20, 0x6081); // bit 14: SLAVE, bit 13: Multi-Port device, bit 8: 2.5GBit available, 1: LD Loop timin enableed
phy_write(bit_mask[port], 0x07, 0x00, 0x3200); // Restart AN
} else {
// AN Control Register (MMD 7.0x0000)
phy_write(bit_mask[port], 0x07, 0x00, 0x2000); // Clear bit 12: No Autoneg, Set Extended Pages (bit 13)
// AN Advertisement Register (MMD 7.0x0010)
phy_write(bit_mask[port], 0x07, 0x10, 0x1001); // bits 0-4: 0x1 (802.3 supported), Extended Next Page format used
if (speed == PHY_SPEED_1G) {
// Multi-GBASE-TBASE-T AN Control 1 Register (MMD 7.0x0020)
phy_write(bit_mask[port], 0x07, 0x20, 0x6001); // bit 14: SLAVE, bit 13: Multi-Port device, 1: LD Loop timin enableed
// GBCR (1000Base-T Control Register, MMD 31.0xA412)
phy_read(port, 0x1f, 0xa412);
v = (((uint16_t)SFR_DATA_8) << 8) | SFR_DATA_0;
phy_write(bit_mask[port], 0x1f, 0xa412, v | 0x0200);
} else if (speed == PHY_SPEED_2G5) {
// Multi-GBASE-TBASE-T AN Control 1 Register (MMD 7.0x0020)
phy_write(bit_mask[port], 0x07, 0x20, 0x6081); // bit 14: SLAVE, bit 13: Multi-Port device, bit 8: 2.5GBit available, 1: LD Loop timin enableed
// GBCR (1000Base-T Control Register, MMD 31.0xA412)
phy_read(port, 0x1f, 0xa412);
v = (((uint16_t)SFR_DATA_8) << 8) | SFR_DATA_0;
phy_write(bit_mask[port], 0x1f, 0xa412, v & 0xfdff);
}
phy_write(bit_mask[port], 0x07, 0x00, 0x3200); // Enable AN
}
}
rtl837x_phy.h
+6
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@@ -1,8 +1,14 @@
#ifndef _RTL837X_PHY_H_ #ifndef _RTL837X_PHY_H_
#define _RTL837X_PHY_H_ #define _RTL837X_PHY_H_
#define PHY_SPEED_AUTO 0x1
#define PHY_SPEED_1G 0x2
#define PHY_SPEED_2G5 0x3
#define PHY_OFF 0xff
void rtl8224_phy_enable(void) __banked; void rtl8224_phy_enable(void) __banked;
void phy_config(uint8_t phy) __banked; void phy_config(uint8_t phy) __banked;
void phy_config_8224(void) __banked; void phy_config_8224(void) __banked;
void phy_set_mode(uint8_t port, uint8_t speed, uint8_t flow_control, uint8_t duplex) __banked;
#endif #endif
rtlplayground.c
+38 -21
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@@ -1492,11 +1492,6 @@ void setup_serial(void)
} }
__code struct command commands[N_COMMANDS] = {
{ "reset", 1 },
};
uint8_t cmd_compare(uint8_t start, uint8_t * __code cmd) uint8_t cmd_compare(uint8_t start, uint8_t * __code cmd)
{ {
signed char i; signed char i;
@@ -1569,6 +1564,7 @@ void bootloader(void)
rtl8224_enable(); // Power on the RTL8224 rtl8224_enable(); // Power on the RTL8224
} }
#ifdef DEBUG
// Reset seconds counter // Reset seconds counter
print_string("\r\nTIMER-TEST: \r\n"); print_string("\r\nTIMER-TEST: \r\n");
REG_SET(RTL837X_REG_SEC_COUNTER, 0x0); REG_SET(RTL837X_REG_SEC_COUNTER, 0x0);
@@ -1582,27 +1578,19 @@ void bootloader(void)
print_reg(RTL837X_REG_SEC_COUNTER); print_reg(RTL837X_REG_SEC_COUNTER);
REG_SET(RTL837X_REG_SEC_COUNTER, 0x3); write_char(' '); REG_SET(RTL837X_REG_SEC_COUNTER, 0x3); write_char(' ');
print_reg(RTL837X_REG_SEC_COUNTER); print_reg(RTL837X_REG_SEC_COUNTER);
#endif
print_string("\r\nStarting up...\r\n"); print_string("\r\nStarting up...\r\n");
print_string(" Flash controller\r\n"); print_string(" Flash controller\r\n");
flash_init(0); flash_init(0);
// The following will only show something else then 0xff if it was programmed for a managed switch
print_string("\r\n Testing read Securty Register 1\r\n");
flash_read_security(0x0001000, 40);
print_string("\r\n Testing read Securty Register 2\r\n");
flash_read_security(0x0002000, 40);
print_string("\r\n Testing read Securty Register 3\r\n");
flash_read_security(0x0003000, 40);
print_string("\r\n");
// r0024:00000f80 R0024-00000f84 r0024:00000f80
// Reset NIC // Reset NIC
reg_bit_set(0x24, 2); reg_bit_set(0x24, 2);
do { do {
reg_read(0x24); reg_read(0x24);
} while (SFR_DATA_0 & 0x4); } while (SFR_DATA_0 & 0x4);
print_string("\r\nNIC reset"); print_string("\r\nNIC reset");
rtl8372_init(); rtl8372_init();
REG_SET(0x7f94, 0x0); // BUG: Only for testing, otherwise: clear bits 0-3 REG_SET(0x7f94, 0x0); // BUG: Only for testing, otherwise: clear bits 0-3
nic_setup(); nic_setup();
@@ -1659,12 +1647,13 @@ void bootloader(void)
// Identify command // Identify command
signed char i = cmd_words_b[0]; signed char i = cmd_words_b[0];
if (i >= 0 && cmd_words_b[1] >= 0) { if (i >= 0 && cmd_words_b[1] >= 0) {
// print_string("\r\n THERE may be a command: "); /* print_string("\r\n THERE may be a command: ");
// print_short(i); print_string("\r\n"); print_short(i); print_string("\r\n");
// print_short(cmd_words_b[0]); print_string("\r\n"); print_short(cmd_words_b[0]); print_string("\r\n");
// print_short(cmd_words_b[1]); print_string("\r\n"); print_short(cmd_words_b[1]); print_string("\r\n");
// print_short(cmd_words_b[2]); print_string("\r\n"); print_short(cmd_words_b[2]); print_string("\r\n");
// print_short(cmd_words_b[3]); print_string("\r\n"); print_short(cmd_words_b[3]); print_string("\r\n");
*/
if (cmd_compare(0, "reset")) { if (cmd_compare(0, "reset")) {
print_string("\r\nRESET\n\n"); print_string("\r\nRESET\n\n");
reset_chip(); reset_chip();
@@ -1683,6 +1672,13 @@ void bootloader(void)
if (cmd_compare(0, "stat")) { if (cmd_compare(0, "stat")) {
port_stats_print(); port_stats_print();
} }
if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && sbuf[cmd_words_b[1]] == 'r') {
print_string("\r\nPRINT SECURITY REGISTERS\r\n");
// The following will only show something else then 0xff if it was programmed for a managed switch
flash_read_security(0x0001000, 40);
flash_read_security(0x0002000, 40);
flash_read_security(0x0003000, 40);
}
if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && sbuf[cmd_words_b[1]] == 'd') { if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && sbuf[cmd_words_b[1]] == 'd') {
print_string("\r\nDUMPING FLASH\r\n"); print_string("\r\nDUMPING FLASH\r\n");
flash_dump(0, 255); flash_dump(0, 255);
@@ -1712,6 +1708,27 @@ void bootloader(void)
flash_buf[i] = greeting[i]; flash_buf[i] = greeting[i];
flash_write_bytes(0x20000, flash_buf, 20); flash_write_bytes(0x20000, flash_buf, 20);
} }
if (cmd_compare(0, "port") && cmd_words_b[1] > 0) {
print_string("\r\nPORT ");
uint8_t p = sbuf[cmd_words_b[1]] - '1';
print_byte(p);
if (cmd_words_b[2] > 0 && cmd_compare(2, "2g5")) {
print_string(" 2.5G\r\n");
phy_set_mode(p, PHY_SPEED_2G5, 0, 0);
}
if (cmd_words_b[2] > 0 && cmd_compare(2, "1g")) {
print_string(" 1G\r\n");
phy_set_mode(p, PHY_SPEED_1G, 0, 0);
}
if (cmd_words_b[2] > 0 && cmd_compare(2, "auto")) {
print_string(" AUTO\r\n");
phy_set_mode(p, PHY_SPEED_AUTO, 0, 0);
}
if (cmd_words_b[2] > 0 && cmd_compare(2, "off")) {
print_string(" OFF\r\n");
phy_set_mode(p, PHY_OFF, 0, 0);
}
}
} }
print_string("\r\n> "); print_string("\r\n> ");
} }