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net: txgbe: support getting module EEPROM by page

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Getting module EEPROM has been supported in TXGBE SP devices, since SFP
driver has already implemented it.

Now add support to read module EEPROM for AML devices. Towards this, add
a new firmware mailbox command to get the page data.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://patch.msgid.link/20251118080259.24676-6-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jiawen Wu
2025-11-18 16:02:59 +08:00
committed by Paolo Abeni
parent c6e97daec5
commit 9b97b6b563
4 changed files with 77 additions and 0 deletions
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33
drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c
View File

@@ -73,6 +73,39 @@ int txgbe_test_hostif(struct wx *wx)
WX_HI_COMMAND_TIMEOUT, true);
}
int txgbe_read_eeprom_hostif(struct wx *wx,
struct txgbe_hic_i2c_read *buffer,
u32 length, u8 *data)
{
u32 dword_len, offset, value, i;
int err;
buffer->hdr.cmd = FW_READ_EEPROM_CMD;
buffer->hdr.buf_len = sizeof(struct txgbe_hic_i2c_read) -
sizeof(struct wx_hic_hdr);
buffer->hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
err = wx_host_interface_command(wx, (u32 *)buffer,
sizeof(struct txgbe_hic_i2c_read),
WX_HI_COMMAND_TIMEOUT, false);
if (err != 0)
return err;
/* buffer length offset to read return data */
offset = sizeof(struct txgbe_hic_i2c_read) >> 2;
dword_len = round_up(length, 4) >> 2;
for (i = 0; i < dword_len; i++) {
value = rd32a(wx, WX_FW2SW_MBOX, i + offset);
le32_to_cpus(&value);
memcpy(data, &value, 4);
data += 4;
}
return 0;
}
static int txgbe_identify_module_hostif(struct wx *wx,
struct txgbe_hic_get_module_info *buffer)
{

3
drivers/net/ethernet/wangxun/txgbe/txgbe_aml.h
View File

@@ -7,6 +7,9 @@
void txgbe_gpio_init_aml(struct wx *wx);
irqreturn_t txgbe_gpio_irq_handler_aml(int irq, void *data);
int txgbe_test_hostif(struct wx *wx);
int txgbe_read_eeprom_hostif(struct wx *wx,
struct txgbe_hic_i2c_read *buffer,
u32 length, u8 *data);
int txgbe_set_phy_link(struct wx *wx);
int txgbe_identify_module(struct wx *wx);
void txgbe_setup_link(struct wx *wx);

30
drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c
View File

@@ -10,6 +10,7 @@
#include "../libwx/wx_lib.h"
#include "txgbe_type.h"
#include "txgbe_fdir.h"
#include "txgbe_aml.h"
#include "txgbe_ethtool.h"
int txgbe_get_link_ksettings(struct net_device *netdev,
@@ -534,6 +535,34 @@ static int txgbe_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
return ret;
}
static int
txgbe_get_module_eeprom_by_page(struct net_device *netdev,
const struct ethtool_module_eeprom *page_data,
struct netlink_ext_ack *extack)
{
struct wx *wx = netdev_priv(netdev);
struct txgbe_hic_i2c_read buffer;
int err;
if (!test_bit(WX_FLAG_SWFW_RING, wx->flags))
return -EOPNOTSUPP;
buffer.length = cpu_to_be32(page_data->length);
buffer.offset = cpu_to_be32(page_data->offset);
buffer.page = page_data->page;
buffer.bank = page_data->bank;
buffer.i2c_address = page_data->i2c_address;
err = txgbe_read_eeprom_hostif(wx, &buffer, page_data->length,
page_data->data);
if (err) {
wx_err(wx, "Failed to read module EEPROM\n");
return err;
}
return page_data->length;
}
static const struct ethtool_ops txgbe_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ |
@@ -568,6 +597,7 @@ static const struct ethtool_ops txgbe_ethtool_ops = {
.set_msglevel = wx_set_msglevel,
.get_ts_info = wx_get_ts_info,
.get_ts_stats = wx_get_ptp_stats,
.get_module_eeprom_by_page = txgbe_get_module_eeprom_by_page,
};
void txgbe_set_ethtool_ops(struct net_device *netdev)

11
drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
View File

@@ -353,6 +353,7 @@ void txgbe_do_reset(struct net_device *netdev);
#define FW_PHY_GET_LINK_CMD 0xC0
#define FW_PHY_SET_LINK_CMD 0xC1
#define FW_GET_MODULE_INFO_CMD 0xC5
#define FW_READ_EEPROM_CMD 0xC6
struct txgbe_sff_id {
u8 identifier; /* A0H 0x00 */
@@ -394,6 +395,16 @@ struct txgbe_hic_ephy_getlink {
u8 resv[6];
};
struct txgbe_hic_i2c_read {
struct wx_hic_hdr hdr;
__be32 offset;
__be32 length;
u8 page;
u8 bank;
u8 i2c_address;
u8 resv;
};
#define NODE_PROP(_NAME, _PROP) \
(const struct software_node) { \
.name = _NAME, \