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ice: add ethtool -m support for reading i2c eeprom modules

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Implement ethtool -m support to read eeprom data from SFP/QSFP modules.

Signed-off-by: Scott W Taylor <scott.w.taylor@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Scott W Taylor
2019-10-09 07:09:40 -07:00
committed by Jeff Kirsher
parent 71c780f119
commit a012dca9f7
4 changed files with 226 additions and 0 deletions
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46
drivers/net/ethernet/intel/ice/ice_common.c
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@@ -2555,6 +2555,52 @@ ice_aq_set_port_id_led(struct ice_port_info *pi, bool is_orig_mode,
return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
}
/**
* ice_aq_sff_eeprom
* @hw: pointer to the HW struct
* @lport: bits [7:0] = logical port, bit [8] = logical port valid
* @bus_addr: I2C bus address of the eeprom (typically 0xA0, 0=topo default)
* @mem_addr: I2C offset. lower 8 bits for address, 8 upper bits zero padding.
* @page: QSFP page
* @set_page: set or ignore the page
* @data: pointer to data buffer to be read/written to the I2C device.
* @length: 1-16 for read, 1 for write.
* @write: 0 read, 1 for write.
* @cd: pointer to command details structure or NULL
*
* Read/Write SFF EEPROM (0x06EE)
*/
enum ice_status
ice_aq_sff_eeprom(struct ice_hw *hw, u16 lport, u8 bus_addr,
u16 mem_addr, u8 page, u8 set_page, u8 *data, u8 length,
bool write, struct ice_sq_cd *cd)
{
struct ice_aqc_sff_eeprom *cmd;
struct ice_aq_desc desc;
enum ice_status status;
if (!data || (mem_addr & 0xff00))
return ICE_ERR_PARAM;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_sff_eeprom);
cmd = &desc.params.read_write_sff_param;
desc.flags = cpu_to_le16(ICE_AQ_FLAG_RD | ICE_AQ_FLAG_BUF);
cmd->lport_num = (u8)(lport & 0xff);
cmd->lport_num_valid = (u8)((lport >> 8) & 0x01);
cmd->i2c_bus_addr = cpu_to_le16(((bus_addr >> 1) &
ICE_AQC_SFF_I2CBUS_7BIT_M) |
((set_page <<
ICE_AQC_SFF_SET_EEPROM_PAGE_S) &
ICE_AQC_SFF_SET_EEPROM_PAGE_M));
cmd->i2c_mem_addr = cpu_to_le16(mem_addr & 0xff);
cmd->eeprom_page = cpu_to_le16((u16)page << ICE_AQC_SFF_EEPROM_PAGE_S);
if (write)
cmd->i2c_bus_addr |= cpu_to_le16(ICE_AQC_SFF_IS_WRITE);
status = ice_aq_send_cmd(hw, &desc, data, length, cd);
return status;
}
/**
* __ice_aq_get_set_rss_lut
* @hw: pointer to the hardware structure