#include "txgbe_mng.h"
#include "txgbe_phy.h"
+static void txgbe_i2c_start(struct txgbe_hw *hw);
+static void txgbe_i2c_stop(struct txgbe_hw *hw);
+
/**
* txgbe_identify_extphy - Identify a single address for a PHY
* @hw: pointer to hardware structure
**/
s32 txgbe_identify_sfp_module(struct txgbe_hw *hw)
{
- RTE_SET_USED(hw);
- return 0;
+ s32 err = TXGBE_ERR_PHY_ADDR_INVALID;
+ u32 vendor_oui = 0;
+ enum txgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
+ u8 identifier = 0;
+ u8 comp_codes_1g = 0;
+ u8 comp_codes_10g = 0;
+ u8 oui_bytes[3] = {0, 0, 0};
+ u8 cable_tech = 0;
+ u8 cable_spec = 0;
+ u16 enforce_sfp = 0;
+
+ DEBUGFUNC("txgbe_identify_sfp_module");
+
+ if (hw->phy.media_type != txgbe_media_type_fiber) {
+ hw->phy.sfp_type = txgbe_sfp_type_not_present;
+ return TXGBE_ERR_SFP_NOT_PRESENT;
+ }
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_IDENTIFIER,
+ &identifier);
+ if (err != 0) {
+ERR_I2C:
+ hw->phy.sfp_type = txgbe_sfp_type_not_present;
+ if (hw->phy.type != txgbe_phy_nl) {
+ hw->phy.id = 0;
+ hw->phy.type = txgbe_phy_unknown;
+ }
+ return TXGBE_ERR_SFP_NOT_PRESENT;
+ }
+
+ if (identifier != TXGBE_SFF_IDENTIFIER_SFP) {
+ hw->phy.type = txgbe_phy_sfp_unsupported;
+ return TXGBE_ERR_SFP_NOT_SUPPORTED;
+ }
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_1GBE_COMP_CODES,
+ &comp_codes_1g);
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_10GBE_COMP_CODES,
+ &comp_codes_10g);
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_CABLE_TECHNOLOGY,
+ &cable_tech);
+ if (err != 0)
+ goto ERR_I2C;
+
+ /* ID Module
+ * =========
+ * 0 SFP_DA_CU
+ * 1 SFP_SR
+ * 2 SFP_LR
+ * 3 SFP_DA_CORE0 - chip-specific
+ * 4 SFP_DA_CORE1 - chip-specific
+ * 5 SFP_SR/LR_CORE0 - chip-specific
+ * 6 SFP_SR/LR_CORE1 - chip-specific
+ * 7 SFP_act_lmt_DA_CORE0 - chip-specific
+ * 8 SFP_act_lmt_DA_CORE1 - chip-specific
+ * 9 SFP_1g_cu_CORE0 - chip-specific
+ * 10 SFP_1g_cu_CORE1 - chip-specific
+ * 11 SFP_1g_sx_CORE0 - chip-specific
+ * 12 SFP_1g_sx_CORE1 - chip-specific
+ */
+ if (cable_tech & TXGBE_SFF_CABLE_DA_PASSIVE) {
+ if (hw->bus.lan_id == 0)
+ hw->phy.sfp_type = txgbe_sfp_type_da_cu_core0;
+ else
+ hw->phy.sfp_type = txgbe_sfp_type_da_cu_core1;
+ } else if (cable_tech & TXGBE_SFF_CABLE_DA_ACTIVE) {
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_CABLE_SPEC_COMP, &cable_spec);
+ if (err != 0)
+ goto ERR_I2C;
+ if (cable_spec & TXGBE_SFF_DA_SPEC_ACTIVE_LIMITING) {
+ hw->phy.sfp_type = (hw->bus.lan_id == 0
+ ? txgbe_sfp_type_da_act_lmt_core0
+ : txgbe_sfp_type_da_act_lmt_core1);
+ } else {
+ hw->phy.sfp_type = txgbe_sfp_type_unknown;
+ }
+ } else if (comp_codes_10g &
+ (TXGBE_SFF_10GBASESR_CAPABLE |
+ TXGBE_SFF_10GBASELR_CAPABLE)) {
+ hw->phy.sfp_type = (hw->bus.lan_id == 0
+ ? txgbe_sfp_type_srlr_core0
+ : txgbe_sfp_type_srlr_core1);
+ } else if (comp_codes_1g & TXGBE_SFF_1GBASET_CAPABLE) {
+ hw->phy.sfp_type = (hw->bus.lan_id == 0
+ ? txgbe_sfp_type_1g_cu_core0
+ : txgbe_sfp_type_1g_cu_core1);
+ } else if (comp_codes_1g & TXGBE_SFF_1GBASESX_CAPABLE) {
+ hw->phy.sfp_type = (hw->bus.lan_id == 0
+ ? txgbe_sfp_type_1g_sx_core0
+ : txgbe_sfp_type_1g_sx_core1);
+ } else if (comp_codes_1g & TXGBE_SFF_1GBASELX_CAPABLE) {
+ hw->phy.sfp_type = (hw->bus.lan_id == 0
+ ? txgbe_sfp_type_1g_lx_core0
+ : txgbe_sfp_type_1g_lx_core1);
+ } else {
+ hw->phy.sfp_type = txgbe_sfp_type_unknown;
+ }
+
+ if (hw->phy.sfp_type != stored_sfp_type)
+ hw->phy.sfp_setup_needed = true;
+
+ /* Determine if the SFP+ PHY is dual speed or not. */
+ hw->phy.multispeed_fiber = false;
+ if (((comp_codes_1g & TXGBE_SFF_1GBASESX_CAPABLE) &&
+ (comp_codes_10g & TXGBE_SFF_10GBASESR_CAPABLE)) ||
+ ((comp_codes_1g & TXGBE_SFF_1GBASELX_CAPABLE) &&
+ (comp_codes_10g & TXGBE_SFF_10GBASELR_CAPABLE)))
+ hw->phy.multispeed_fiber = true;
+
+ /* Determine PHY vendor */
+ if (hw->phy.type != txgbe_phy_nl) {
+ hw->phy.id = identifier;
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_VENDOR_OUI_BYTE0, &oui_bytes[0]);
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_VENDOR_OUI_BYTE1, &oui_bytes[1]);
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_VENDOR_OUI_BYTE2, &oui_bytes[2]);
+ if (err != 0)
+ goto ERR_I2C;
+
+ vendor_oui = ((u32)oui_bytes[0] << 24) |
+ ((u32)oui_bytes[1] << 16) |
+ ((u32)oui_bytes[2] << 8);
+ switch (vendor_oui) {
+ case TXGBE_SFF_VENDOR_OUI_TYCO:
+ if (cable_tech & TXGBE_SFF_CABLE_DA_PASSIVE)
+ hw->phy.type = txgbe_phy_sfp_tyco_passive;
+ break;
+ case TXGBE_SFF_VENDOR_OUI_FTL:
+ if (cable_tech & TXGBE_SFF_CABLE_DA_ACTIVE)
+ hw->phy.type = txgbe_phy_sfp_ftl_active;
+ else
+ hw->phy.type = txgbe_phy_sfp_ftl;
+ break;
+ case TXGBE_SFF_VENDOR_OUI_AVAGO:
+ hw->phy.type = txgbe_phy_sfp_avago;
+ break;
+ case TXGBE_SFF_VENDOR_OUI_INTEL:
+ hw->phy.type = txgbe_phy_sfp_intel;
+ break;
+ default:
+ if (cable_tech & TXGBE_SFF_CABLE_DA_PASSIVE)
+ hw->phy.type = txgbe_phy_sfp_unknown_passive;
+ else if (cable_tech & TXGBE_SFF_CABLE_DA_ACTIVE)
+ hw->phy.type = txgbe_phy_sfp_unknown_active;
+ else
+ hw->phy.type = txgbe_phy_sfp_unknown;
+ break;
+ }
+ }
+
+ /* Allow any DA cable vendor */
+ if (cable_tech & (TXGBE_SFF_CABLE_DA_PASSIVE |
+ TXGBE_SFF_CABLE_DA_ACTIVE)) {
+ return 0;
+ }
+
+ /* Verify supported 1G SFP modules */
+ if (comp_codes_10g == 0 &&
+ !(hw->phy.sfp_type == txgbe_sfp_type_1g_cu_core1 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_cu_core0 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_lx_core0 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_lx_core1 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_sx_core0 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_sx_core1)) {
+ hw->phy.type = txgbe_phy_sfp_unsupported;
+ return TXGBE_ERR_SFP_NOT_SUPPORTED;
+ }
+
+ hw->mac.get_device_caps(hw, &enforce_sfp);
+ if (!(enforce_sfp & TXGBE_DEVICE_CAPS_ALLOW_ANY_SFP) &&
+ !hw->allow_unsupported_sfp &&
+ !(hw->phy.sfp_type == txgbe_sfp_type_1g_cu_core0 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_cu_core1 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_lx_core0 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_lx_core1 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_sx_core0 ||
+ hw->phy.sfp_type == txgbe_sfp_type_1g_sx_core1)) {
+ DEBUGOUT("SFP+ module not supported\n");
+ hw->phy.type = txgbe_phy_sfp_unsupported;
+ return TXGBE_ERR_SFP_NOT_SUPPORTED;
+ }
+
+ return err;
}
/**
**/
s32 txgbe_identify_qsfp_module(struct txgbe_hw *hw)
{
- RTE_SET_USED(hw);
+ s32 err = TXGBE_ERR_PHY_ADDR_INVALID;
+ u32 vendor_oui = 0;
+ enum txgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
+ u8 identifier = 0;
+ u8 comp_codes_1g = 0;
+ u8 comp_codes_10g = 0;
+ u8 oui_bytes[3] = {0, 0, 0};
+ u16 enforce_sfp = 0;
+ u8 connector = 0;
+ u8 cable_length = 0;
+ u8 device_tech = 0;
+ bool active_cable = false;
+
+ DEBUGFUNC("txgbe_identify_qsfp_module");
+
+ if (hw->phy.media_type != txgbe_media_type_fiber_qsfp) {
+ hw->phy.sfp_type = txgbe_sfp_type_not_present;
+ err = TXGBE_ERR_SFP_NOT_PRESENT;
+ goto out;
+ }
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_IDENTIFIER,
+ &identifier);
+ERR_I2C:
+ if (err != 0) {
+ hw->phy.sfp_type = txgbe_sfp_type_not_present;
+ hw->phy.id = 0;
+ hw->phy.type = txgbe_phy_unknown;
+ return TXGBE_ERR_SFP_NOT_PRESENT;
+ }
+ if (identifier != TXGBE_SFF_IDENTIFIER_QSFP_PLUS) {
+ hw->phy.type = txgbe_phy_sfp_unsupported;
+ err = TXGBE_ERR_SFP_NOT_SUPPORTED;
+ goto out;
+ }
+
+ hw->phy.id = identifier;
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_QSFP_10GBE_COMP,
+ &comp_codes_10g);
+
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw, TXGBE_SFF_QSFP_1GBE_COMP,
+ &comp_codes_1g);
+
+ if (err != 0)
+ goto ERR_I2C;
+
+ if (comp_codes_10g & TXGBE_SFF_QSFP_DA_PASSIVE_CABLE) {
+ hw->phy.type = txgbe_phy_qsfp_unknown_passive;
+ if (hw->bus.lan_id == 0)
+ hw->phy.sfp_type = txgbe_sfp_type_da_cu_core0;
+ else
+ hw->phy.sfp_type = txgbe_sfp_type_da_cu_core1;
+ } else if (comp_codes_10g & (TXGBE_SFF_10GBASESR_CAPABLE |
+ TXGBE_SFF_10GBASELR_CAPABLE)) {
+ if (hw->bus.lan_id == 0)
+ hw->phy.sfp_type = txgbe_sfp_type_srlr_core0;
+ else
+ hw->phy.sfp_type = txgbe_sfp_type_srlr_core1;
+ } else {
+ if (comp_codes_10g & TXGBE_SFF_QSFP_DA_ACTIVE_CABLE)
+ active_cable = true;
+
+ if (!active_cable) {
+ hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_QSFP_CONNECTOR,
+ &connector);
+
+ hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_QSFP_CABLE_LENGTH,
+ &cable_length);
+
+ hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_QSFP_DEVICE_TECH,
+ &device_tech);
+
+ if (connector ==
+ TXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE &&
+ cable_length > 0 &&
+ ((device_tech >> 4) ==
+ TXGBE_SFF_QSFP_TRANSMITTER_850NM_VCSEL))
+ active_cable = true;
+ }
+
+ if (active_cable) {
+ hw->phy.type = txgbe_phy_qsfp_unknown_active;
+ if (hw->bus.lan_id == 0)
+ hw->phy.sfp_type =
+ txgbe_sfp_type_da_act_lmt_core0;
+ else
+ hw->phy.sfp_type =
+ txgbe_sfp_type_da_act_lmt_core1;
+ } else {
+ /* unsupported module type */
+ hw->phy.type = txgbe_phy_sfp_unsupported;
+ err = TXGBE_ERR_SFP_NOT_SUPPORTED;
+ goto out;
+ }
+ }
+
+ if (hw->phy.sfp_type != stored_sfp_type)
+ hw->phy.sfp_setup_needed = true;
+
+ /* Determine if the QSFP+ PHY is dual speed or not. */
+ hw->phy.multispeed_fiber = false;
+ if (((comp_codes_1g & TXGBE_SFF_1GBASESX_CAPABLE) &&
+ (comp_codes_10g & TXGBE_SFF_10GBASESR_CAPABLE)) ||
+ ((comp_codes_1g & TXGBE_SFF_1GBASELX_CAPABLE) &&
+ (comp_codes_10g & TXGBE_SFF_10GBASELR_CAPABLE)))
+ hw->phy.multispeed_fiber = true;
+
+ /* Determine PHY vendor for optical modules */
+ if (comp_codes_10g & (TXGBE_SFF_10GBASESR_CAPABLE |
+ TXGBE_SFF_10GBASELR_CAPABLE)) {
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_QSFP_VENDOR_OUI_BYTE0,
+ &oui_bytes[0]);
+
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_QSFP_VENDOR_OUI_BYTE1,
+ &oui_bytes[1]);
+
+ if (err != 0)
+ goto ERR_I2C;
+
+ err = hw->phy.read_i2c_eeprom(hw,
+ TXGBE_SFF_QSFP_VENDOR_OUI_BYTE2,
+ &oui_bytes[2]);
+
+ if (err != 0)
+ goto ERR_I2C;
+
+ vendor_oui =
+ ((oui_bytes[0] << 24) |
+ (oui_bytes[1] << 16) |
+ (oui_bytes[2] << 8));
+
+ if (vendor_oui == TXGBE_SFF_VENDOR_OUI_INTEL)
+ hw->phy.type = txgbe_phy_qsfp_intel;
+ else
+ hw->phy.type = txgbe_phy_qsfp_unknown;
+
+ hw->mac.get_device_caps(hw, &enforce_sfp);
+ if (!(enforce_sfp & TXGBE_DEVICE_CAPS_ALLOW_ANY_SFP)) {
+ /* Make sure we're a supported PHY type */
+ if (hw->phy.type == txgbe_phy_qsfp_intel) {
+ err = 0;
+ } else {
+ if (hw->allow_unsupported_sfp) {
+ DEBUGOUT("WARNING: Wangxun (R) Network Connections are quality tested using Wangxun (R) Ethernet Optics. "
+ "Using untested modules is not supported and may cause unstable operation or damage to the module or the adapter. "
+ "Wangxun Corporation is not responsible for any harm caused by using untested modules.\n");
+ err = 0;
+ } else {
+ DEBUGOUT("QSFP module not supported\n");
+ hw->phy.type =
+ txgbe_phy_sfp_unsupported;
+ err = TXGBE_ERR_SFP_NOT_SUPPORTED;
+ }
+ }
+ } else {
+ err = 0;
+ }
+ }
+
+out:
+ return err;
+}
+
+/**
+ * txgbe_read_i2c_eeprom - Reads 8 bit EEPROM word over I2C interface
+ * @hw: pointer to hardware structure
+ * @byte_offset: EEPROM byte offset to read
+ * @eeprom_data: value read
+ *
+ * Performs byte read operation to SFP module's EEPROM over I2C interface.
+ **/
+s32 txgbe_read_i2c_eeprom(struct txgbe_hw *hw, u8 byte_offset,
+ u8 *eeprom_data)
+{
+ DEBUGFUNC("txgbe_read_i2c_eeprom");
+
+ return hw->phy.read_i2c_byte(hw, byte_offset,
+ TXGBE_I2C_EEPROM_DEV_ADDR,
+ eeprom_data);
+}
+
+/**
+ * txgbe_write_i2c_eeprom - Writes 8 bit EEPROM word over I2C interface
+ * @hw: pointer to hardware structure
+ * @byte_offset: EEPROM byte offset to write
+ * @eeprom_data: value to write
+ *
+ * Performs byte write operation to SFP module's EEPROM over I2C interface.
+ **/
+s32 txgbe_write_i2c_eeprom(struct txgbe_hw *hw, u8 byte_offset,
+ u8 eeprom_data)
+{
+ DEBUGFUNC("txgbe_write_i2c_eeprom");
+
+ return hw->phy.write_i2c_byte(hw, byte_offset,
+ TXGBE_I2C_EEPROM_DEV_ADDR,
+ eeprom_data);
+}
+
+/**
+ * txgbe_read_i2c_byte_unlocked - Reads 8 bit word over I2C
+ * @hw: pointer to hardware structure
+ * @byte_offset: byte offset to read
+ * @dev_addr: address to read from
+ * @data: value read
+ *
+ * Performs byte read operation to SFP module's EEPROM over I2C interface at
+ * a specified device address.
+ **/
+s32 txgbe_read_i2c_byte_unlocked(struct txgbe_hw *hw, u8 byte_offset,
+ u8 dev_addr, u8 *data)
+{
+ UNREFERENCED_PARAMETER(dev_addr);
+
+ DEBUGFUNC("txgbe_read_i2c_byte");
+
+ txgbe_i2c_start(hw);
+
+ /* wait tx empty */
+ if (!po32m(hw, TXGBE_I2CICR, TXGBE_I2CICR_TXEMPTY,
+ TXGBE_I2CICR_TXEMPTY, NULL, 100, 100)) {
+ return -TERR_TIMEOUT;
+ }
+
+ /* read data */
+ wr32(hw, TXGBE_I2CDATA,
+ byte_offset | TXGBE_I2CDATA_STOP);
+ wr32(hw, TXGBE_I2CDATA, TXGBE_I2CDATA_READ);
+
+ /* wait for read complete */
+ if (!po32m(hw, TXGBE_I2CICR, TXGBE_I2CICR_RXFULL,
+ TXGBE_I2CICR_RXFULL, NULL, 100, 100)) {
+ return -TERR_TIMEOUT;
+ }
+
+ txgbe_i2c_stop(hw);
+
+ *data = 0xFF & rd32(hw, TXGBE_I2CDATA);
+
+ return 0;
+}
+
+/**
+ * txgbe_read_i2c_byte - Reads 8 bit word over I2C
+ * @hw: pointer to hardware structure
+ * @byte_offset: byte offset to read
+ * @dev_addr: address to read from
+ * @data: value read
+ *
+ * Performs byte read operation to SFP module's EEPROM over I2C interface at
+ * a specified device address.
+ **/
+s32 txgbe_read_i2c_byte(struct txgbe_hw *hw, u8 byte_offset,
+ u8 dev_addr, u8 *data)
+{
+ u32 swfw_mask = hw->phy.phy_semaphore_mask;
+ int err = 0;
+
+ if (hw->mac.acquire_swfw_sync(hw, swfw_mask))
+ return TXGBE_ERR_SWFW_SYNC;
+ err = txgbe_read_i2c_byte_unlocked(hw, byte_offset, dev_addr, data);
+ hw->mac.release_swfw_sync(hw, swfw_mask);
+ return err;
+}
+
+/**
+ * txgbe_write_i2c_byte_unlocked - Writes 8 bit word over I2C
+ * @hw: pointer to hardware structure
+ * @byte_offset: byte offset to write
+ * @dev_addr: address to write to
+ * @data: value to write
+ *
+ * Performs byte write operation to SFP module's EEPROM over I2C interface at
+ * a specified device address.
+ **/
+s32 txgbe_write_i2c_byte_unlocked(struct txgbe_hw *hw, u8 byte_offset,
+ u8 dev_addr, u8 data)
+{
+ UNREFERENCED_PARAMETER(dev_addr);
+
+ DEBUGFUNC("txgbe_write_i2c_byte");
+
+ txgbe_i2c_start(hw);
+
+ /* wait tx empty */
+ if (!po32m(hw, TXGBE_I2CICR, TXGBE_I2CICR_TXEMPTY,
+ TXGBE_I2CICR_TXEMPTY, NULL, 100, 100)) {
+ return -TERR_TIMEOUT;
+ }
+
+ wr32(hw, TXGBE_I2CDATA, byte_offset | TXGBE_I2CDATA_STOP);
+ wr32(hw, TXGBE_I2CDATA, data | TXGBE_I2CDATA_WRITE);
+
+ /* wait for write complete */
+ if (!po32m(hw, TXGBE_I2CICR, TXGBE_I2CICR_RXFULL,
+ TXGBE_I2CICR_RXFULL, NULL, 100, 100)) {
+ return -TERR_TIMEOUT;
+ }
+ txgbe_i2c_stop(hw);
+
return 0;
}
+/**
+ * txgbe_write_i2c_byte - Writes 8 bit word over I2C
+ * @hw: pointer to hardware structure
+ * @byte_offset: byte offset to write
+ * @dev_addr: address to write to
+ * @data: value to write
+ *
+ * Performs byte write operation to SFP module's EEPROM over I2C interface at
+ * a specified device address.
+ **/
+s32 txgbe_write_i2c_byte(struct txgbe_hw *hw, u8 byte_offset,
+ u8 dev_addr, u8 data)
+{
+ u32 swfw_mask = hw->phy.phy_semaphore_mask;
+ int err = 0;
+
+ if (hw->mac.acquire_swfw_sync(hw, swfw_mask))
+ return TXGBE_ERR_SWFW_SYNC;
+ err = txgbe_write_i2c_byte_unlocked(hw, byte_offset, dev_addr, data);
+ hw->mac.release_swfw_sync(hw, swfw_mask);
+
+ return err;
+}
+
+/**
+ * txgbe_i2c_start - Sets I2C start condition
+ * @hw: pointer to hardware structure
+ *
+ * Sets I2C start condition (High -> Low on SDA while SCL is High)
+ **/
+static void txgbe_i2c_start(struct txgbe_hw *hw)
+{
+ DEBUGFUNC("txgbe_i2c_start");
+
+ wr32(hw, TXGBE_I2CENA, 0);
+
+ wr32(hw, TXGBE_I2CCON,
+ (TXGBE_I2CCON_MENA |
+ TXGBE_I2CCON_SPEED(1) |
+ TXGBE_I2CCON_RESTART |
+ TXGBE_I2CCON_SDIA));
+ wr32(hw, TXGBE_I2CTAR, TXGBE_I2C_SLAVEADDR);
+ wr32(hw, TXGBE_I2CSSSCLHCNT, 600);
+ wr32(hw, TXGBE_I2CSSSCLLCNT, 600);
+ wr32(hw, TXGBE_I2CRXTL, 0); /* 1byte for rx full signal */
+ wr32(hw, TXGBE_I2CTXTL, 4);
+ wr32(hw, TXGBE_I2CSCLTMOUT, 0xFFFFFF);
+ wr32(hw, TXGBE_I2CSDATMOUT, 0xFFFFFF);
+
+ wr32(hw, TXGBE_I2CICM, 0);
+ wr32(hw, TXGBE_I2CENA, 1);
+}
+
+/**
+ * txgbe_i2c_stop - Sets I2C stop condition
+ * @hw: pointer to hardware structure
+ *
+ * Sets I2C stop condition (Low -> High on SDA while SCL is High)
+ **/
+static void txgbe_i2c_stop(struct txgbe_hw *hw)
+{
+ DEBUGFUNC("txgbe_i2c_stop");
+
+ /* wait for completion */
+ if (!po32m(hw, TXGBE_I2CSTAT, TXGBE_I2CSTAT_MST,
+ 0, NULL, 100, 100)) {
+ DEBUGFUNC("i2c stop timeout.");
+ }
+
+ wr32(hw, TXGBE_I2CENA, 0);
+}
+
git.droids-corp.org / dpdk.git / commitdiff