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bnxt_en: add .set_module_eeprom_by_page() support

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Add support for .set_module_eeprom_by_page() callback
which implements generic solution for modules eeprom access.
This implementation also supports CMIS 5.0.3 compliant
eeprom FW download.

Sample Usage:
ethtool --flash-module-firmware enp177s0np0 file dummy.bin

Signed-off-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250310183129.3154117-8-michael.chan@broadcom.com
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Damodharam Ammepalli
2025-03-10 11:31:29 -07:00
committed by Paolo Abeni
parent 1b64544d63
commit c3be245dfc
1 changed files with 58 additions and 1 deletions
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59
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
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@@ -4550,7 +4550,7 @@ bnxt_mod_eeprom_by_page_precheck(struct bnxt *bp,
if (BNXT_VF(bp) && !BNXT_VF_IS_TRUSTED(bp)) {
NL_SET_ERR_MSG_MOD(extack,
"Module read not permitted on untrusted VF");
"Module read/write not permitted on untrusted VF");
return -EPERM;
}
@@ -4593,6 +4593,62 @@ static int bnxt_get_module_eeprom_by_page(struct net_device *dev,
return page_data->length;
}
static int bnxt_write_sfp_module_eeprom_info(struct bnxt *bp,
const struct ethtool_module_eeprom *page)
{
struct hwrm_port_phy_i2c_write_input *req;
int bytes_written = 0;
int rc;
rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_I2C_WRITE);
if (rc)
return rc;
hwrm_req_hold(bp, req);
req->i2c_slave_addr = page->i2c_address << 1;
req->page_number = cpu_to_le16(page->page);
req->bank_number = page->bank;
req->port_id = cpu_to_le16(bp->pf.port_id);
req->enables = cpu_to_le32(PORT_PHY_I2C_WRITE_REQ_ENABLES_PAGE_OFFSET |
PORT_PHY_I2C_WRITE_REQ_ENABLES_BANK_NUMBER);
while (bytes_written < page->length) {
u16 xfer_size;
xfer_size = min_t(u16, page->length - bytes_written,
BNXT_MAX_PHY_I2C_RESP_SIZE);
req->page_offset = cpu_to_le16(page->offset + bytes_written);
req->data_length = xfer_size;
memcpy(req->data, page->data + bytes_written, xfer_size);
rc = hwrm_req_send(bp, req);
if (rc)
break;
bytes_written += xfer_size;
}
hwrm_req_drop(bp, req);
return rc;
}
static int bnxt_set_module_eeprom_by_page(struct net_device *dev,
const struct ethtool_module_eeprom *page_data,
struct netlink_ext_ack *extack)
{
struct bnxt *bp = netdev_priv(dev);
int rc;
rc = bnxt_mod_eeprom_by_page_precheck(bp, page_data, extack);
if (rc)
return rc;
rc = bnxt_write_sfp_module_eeprom_info(bp, page_data);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "Module`s eeprom write failed");
return rc;
}
return page_data->length;
}
static int bnxt_nway_reset(struct net_device *dev)
{
int rc = 0;
@@ -5455,6 +5511,7 @@ const struct ethtool_ops bnxt_ethtool_ops = {
.get_module_info = bnxt_get_module_info,
.get_module_eeprom = bnxt_get_module_eeprom,
.get_module_eeprom_by_page = bnxt_get_module_eeprom_by_page,
.set_module_eeprom_by_page = bnxt_set_module_eeprom_by_page,
.nway_reset = bnxt_nway_reset,
.set_phys_id = bnxt_set_phys_id,
.self_test = bnxt_self_test,