/* Due to a hw errata, if the host tries to configure the VFTA register * while performing queries from the BMC or DMA, then the VFTA in some * cases won't be written.
*/
/** * igb_write_vfta_i350 - Write value to VLAN filter table * @hw: pointer to the HW structure * @offset: register offset in VLAN filter table * @value: register value written to VLAN filter table * * Writes value at the given offset in the register array which stores * the VLAN filter table.
**/ staticvoid igb_write_vfta_i350(struct e1000_hw *hw, u32 offset, u32 value)
{ struct igb_adapter *adapter = hw->back; int i;
for (i = 10; i--;)
array_wr32(E1000_VFTA, offset, value);
wrfl();
adapter->shadow_vfta[offset] = value;
}
/** * igb_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO * @hw: pointer to the HW structure * * Called to determine if the I2C pins are being used for I2C or as an * external MDIO interface since the two options are mutually exclusive.
**/ staticbool igb_sgmii_uses_mdio_82575(struct e1000_hw *hw)
{
u32 reg = 0; bool ext_mdio = false;
switch (hw->mac.type) { case e1000_82575: case e1000_82576:
reg = rd32(E1000_MDIC);
ext_mdio = !!(reg & E1000_MDIC_DEST); break; case e1000_82580: case e1000_i350: case e1000_i354: case e1000_i210: case e1000_i211:
reg = rd32(E1000_MDICNFG);
ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO); break; default: break;
} return ext_mdio;
}
/** * igb_check_for_link_media_swap - Check which M88E1112 interface linked * @hw: pointer to the HW structure * * Poll the M88E1112 interfaces to see which interface achieved link.
*/ static s32 igb_check_for_link_media_swap(struct e1000_hw *hw)
{ struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
u16 data;
u8 port = 0;
/* Check the copper medium. */
ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); if (ret_val) return ret_val;
ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data); if (ret_val) return ret_val;
if (data & E1000_M88E1112_STATUS_LINK)
port = E1000_MEDIA_PORT_COPPER;
/* Check the other medium. */
ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 1); if (ret_val) return ret_val;
ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data); if (ret_val) return ret_val;
if (data & E1000_M88E1112_STATUS_LINK)
port = E1000_MEDIA_PORT_OTHER;
/* Determine if a swap needs to happen. */ if (port && (hw->dev_spec._82575.media_port != port)) {
hw->dev_spec._82575.media_port = port;
hw->dev_spec._82575.media_changed = true;
}
if (port == E1000_MEDIA_PORT_COPPER) { /* reset page to 0 */
ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); if (ret_val) return ret_val;
igb_check_for_link_82575(hw);
} else {
igb_check_for_link_82575(hw); /* reset page to 0 */
ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); if (ret_val) return ret_val;
}
if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) {
phy->ops.read_reg = igb_read_phy_reg_sgmii_82575;
phy->ops.write_reg = igb_write_phy_reg_sgmii_82575;
} else { switch (hw->mac.type) { case e1000_82580: case e1000_i350: case e1000_i354: case e1000_i210: case e1000_i211:
phy->ops.read_reg = igb_read_phy_reg_82580;
phy->ops.write_reg = igb_write_phy_reg_82580; break; default:
phy->ops.read_reg = igb_read_phy_reg_igp;
phy->ops.write_reg = igb_write_phy_reg_igp;
}
}
/* set lan id */
hw->bus.func = FIELD_GET(E1000_STATUS_FUNC_MASK, rd32(E1000_STATUS));
/* Set phy->phy_addr and phy->id. */
ret_val = igb_get_phy_id_82575(hw); if (ret_val) return ret_val;
/* Verify phy id and set remaining function pointers */ switch (phy->id) { case M88E1543_E_PHY_ID: case M88E1512_E_PHY_ID: case I347AT4_E_PHY_ID: case M88E1112_E_PHY_ID: case M88E1111_I_PHY_ID:
phy->type = e1000_phy_m88;
phy->ops.check_polarity = igb_check_polarity_m88;
phy->ops.get_phy_info = igb_get_phy_info_m88; if (phy->id != M88E1111_I_PHY_ID)
phy->ops.get_cable_length =
igb_get_cable_length_m88_gen2; else
phy->ops.get_cable_length = igb_get_cable_length_m88;
phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88; /* Check if this PHY is configured for media swap. */ if (phy->id == M88E1112_E_PHY_ID) {
u16 data;
ret_val = phy->ops.write_reg(hw,
E1000_M88E1112_PAGE_ADDR,
2); if (ret_val) goto out;
ret_val = phy->ops.read_reg(hw,
E1000_M88E1112_MAC_CTRL_1,
&data); if (ret_val) goto out;
/* Set if part includes ASF firmware */
mac->asf_firmware_present = true; /* Set if manageability features are enabled. */
mac->arc_subsystem_valid =
(rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
? true : false; /* enable EEE on i350 parts and later parts */ if (mac->type >= e1000_i350)
dev_spec->eee_disable = false; else
dev_spec->eee_disable = true; /* Allow a single clear of the SW semaphore on I210 and newer */ if (mac->type >= e1000_i210)
dev_spec->clear_semaphore_once = true; /* physical interface link setup */
mac->ops.setup_physical_interface =
(hw->phy.media_type == e1000_media_type_copper)
? igb_setup_copper_link_82575
: igb_setup_serdes_link_82575;
if (mac->type == e1000_82580 || mac->type == e1000_i350) { switch (hw->device_id) { /* feature not supported on these id's */ case E1000_DEV_ID_DH89XXCC_SGMII: case E1000_DEV_ID_DH89XXCC_SERDES: case E1000_DEV_ID_DH89XXCC_BACKPLANE: case E1000_DEV_ID_DH89XXCC_SFP: break; default:
hw->dev_spec._82575.mas_capable = true; break;
}
} return 0;
}
/** * igb_set_sfp_media_type_82575 - derives SFP module media type. * @hw: pointer to the HW structure * * The media type is chosen based on SFP module. * compatibility flags retrieved from SFP ID EEPROM.
**/ static s32 igb_set_sfp_media_type_82575(struct e1000_hw *hw)
{
s32 ret_val = E1000_ERR_CONFIG;
u32 ctrl_ext = 0; struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; struct e1000_sfp_flags *eth_flags = &dev_spec->eth_flags;
u8 tranceiver_type = 0;
s32 timeout = 3;
/* Turn I2C interface ON and power on sfp cage */
ctrl_ext = rd32(E1000_CTRL_EXT);
ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
wr32(E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_I2C_ENA);
wrfl();
/* Read SFP module data */ while (timeout) {
ret_val = igb_read_sfp_data_byte(hw,
E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_IDENTIFIER_OFFSET),
&tranceiver_type); if (ret_val == 0) break;
msleep(100);
timeout--;
} if (ret_val != 0) goto out;
switch (hw->device_id) { case E1000_DEV_ID_82575EB_COPPER: case E1000_DEV_ID_82575EB_FIBER_SERDES: case E1000_DEV_ID_82575GB_QUAD_COPPER:
mac->type = e1000_82575; break; case E1000_DEV_ID_82576: case E1000_DEV_ID_82576_NS: case E1000_DEV_ID_82576_NS_SERDES: case E1000_DEV_ID_82576_FIBER: case E1000_DEV_ID_82576_SERDES: case E1000_DEV_ID_82576_QUAD_COPPER: case E1000_DEV_ID_82576_QUAD_COPPER_ET2: case E1000_DEV_ID_82576_SERDES_QUAD:
mac->type = e1000_82576; break; case E1000_DEV_ID_82580_COPPER: case E1000_DEV_ID_82580_FIBER: case E1000_DEV_ID_82580_QUAD_FIBER: case E1000_DEV_ID_82580_SERDES: case E1000_DEV_ID_82580_SGMII: case E1000_DEV_ID_82580_COPPER_DUAL: case E1000_DEV_ID_DH89XXCC_SGMII: case E1000_DEV_ID_DH89XXCC_SERDES: case E1000_DEV_ID_DH89XXCC_BACKPLANE: case E1000_DEV_ID_DH89XXCC_SFP:
mac->type = e1000_82580; break; case E1000_DEV_ID_I350_COPPER: case E1000_DEV_ID_I350_FIBER: case E1000_DEV_ID_I350_SERDES: case E1000_DEV_ID_I350_SGMII:
mac->type = e1000_i350; break; case E1000_DEV_ID_I210_COPPER: case E1000_DEV_ID_I210_FIBER: case E1000_DEV_ID_I210_SERDES: case E1000_DEV_ID_I210_SGMII: case E1000_DEV_ID_I210_COPPER_FLASHLESS: case E1000_DEV_ID_I210_SERDES_FLASHLESS:
mac->type = e1000_i210; break; case E1000_DEV_ID_I211_COPPER:
mac->type = e1000_i211; break; case E1000_DEV_ID_I354_BACKPLANE_1GBPS: case E1000_DEV_ID_I354_SGMII: case E1000_DEV_ID_I354_BACKPLANE_2_5GBPS:
mac->type = e1000_i354; break; default: return -E1000_ERR_MAC_INIT;
}
/* Set media type */ /* The 82575 uses bits 22:23 for link mode. The mode can be changed * based on the EEPROM. We cannot rely upon device ID. There * is no distinguishable difference between fiber and internal * SerDes mode on the 82575. There can be an external PHY attached * on the SGMII interface. For this, we'll set sgmii_active to true.
*/
hw->phy.media_type = e1000_media_type_copper;
dev_spec->sgmii_active = false;
dev_spec->module_plugged = false;
ctrl_ext = rd32(E1000_CTRL_EXT);
link_mode = ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK; switch (link_mode) { case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
hw->phy.media_type = e1000_media_type_internal_serdes; break; case E1000_CTRL_EXT_LINK_MODE_SGMII: /* Get phy control interface type set (MDIO vs. I2C)*/ if (igb_sgmii_uses_mdio_82575(hw)) {
hw->phy.media_type = e1000_media_type_copper;
dev_spec->sgmii_active = true; break;
}
fallthrough; /* for I2C based SGMII */ case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES: /* read media type from SFP EEPROM */
ret_val = igb_set_sfp_media_type_82575(hw); if ((ret_val != 0) ||
(hw->phy.media_type == e1000_media_type_unknown)) { /* If media type was not identified then return media * type defined by the CTRL_EXT settings.
*/
hw->phy.media_type = e1000_media_type_internal_serdes;
/* if part supports SR-IOV then initialize mailbox parameters */ switch (mac->type) { case e1000_82576: case e1000_i350:
igb_init_mbx_params_pf(hw); break; default: break;
}
/** * igb_acquire_phy_82575 - Acquire rights to access PHY * @hw: pointer to the HW structure * * Acquire access rights to the correct PHY. This is a * function pointer entry point called by the api module.
**/ static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
{
u16 mask = E1000_SWFW_PHY0_SM;
/** * igb_release_phy_82575 - Release rights to access PHY * @hw: pointer to the HW structure * * A wrapper to release access rights to the correct PHY. This is a * function pointer entry point called by the api module.
**/ staticvoid igb_release_phy_82575(struct e1000_hw *hw)
{
u16 mask = E1000_SWFW_PHY0_SM;
/** * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii * @hw: pointer to the HW structure * @offset: register offset to be read * @data: pointer to the read data * * Reads the PHY register at offset using the serial gigabit media independent * interface and stores the retrieved information in data.
**/ static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
u16 *data)
{
s32 ret_val = -E1000_ERR_PARAM;
if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
hw_dbg("PHY Address %u is out of range\n", offset); goto out;
}
ret_val = hw->phy.ops.acquire(hw); if (ret_val) goto out;
ret_val = igb_read_phy_reg_i2c(hw, offset, data);
hw->phy.ops.release(hw);
out: return ret_val;
}
/** * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii * @hw: pointer to the HW structure * @offset: register offset to write to * @data: data to write at register offset * * Writes the data to PHY register at the offset using the serial gigabit * media independent interface.
**/ static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
u16 data)
{
s32 ret_val = -E1000_ERR_PARAM;
if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
hw_dbg("PHY Address %d is out of range\n", offset); goto out;
}
ret_val = hw->phy.ops.acquire(hw); if (ret_val) goto out;
/** * igb_get_phy_id_82575 - Retrieve PHY addr and id * @hw: pointer to the HW structure * * Retrieves the PHY address and ID for both PHY's which do and do not use * sgmi interface.
**/ static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
{ struct e1000_phy_info *phy = &hw->phy;
s32 ret_val = 0;
u16 phy_id;
u32 ctrl_ext;
u32 mdic;
/* Extra read required for some PHY's on i354 */ if (hw->mac.type == e1000_i354)
igb_get_phy_id(hw);
/* For SGMII PHYs, we try the list of possible addresses until * we find one that works. For non-SGMII PHYs * (e.g. integrated copper PHYs), an address of 1 should * work. The result of this function should mean phy->phy_addr * and phy->id are set correctly.
*/ if (!(igb_sgmii_active_82575(hw))) {
phy->addr = 1;
ret_val = igb_get_phy_id(hw); goto out;
}
if (igb_sgmii_uses_mdio_82575(hw)) { switch (hw->mac.type) { case e1000_82575: case e1000_82576:
mdic = rd32(E1000_MDIC);
mdic &= E1000_MDIC_PHY_MASK;
phy->addr = mdic >> E1000_MDIC_PHY_SHIFT; break; case e1000_82580: case e1000_i350: case e1000_i354: case e1000_i210: case e1000_i211:
mdic = rd32(E1000_MDICNFG);
mdic &= E1000_MDICNFG_PHY_MASK;
phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT; break; default:
ret_val = -E1000_ERR_PHY; goto out;
}
ret_val = igb_get_phy_id(hw); goto out;
}
/* Power on sgmii phy if it is disabled */
ctrl_ext = rd32(E1000_CTRL_EXT);
wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA);
wrfl();
msleep(300);
/* The address field in the I2CCMD register is 3 bits and 0 is invalid. * Therefore, we need to test 1-7
*/ for (phy->addr = 1; phy->addr < 8; phy->addr++) {
ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id); if (ret_val == 0) {
hw_dbg("Vendor ID 0x%08X read at address %u\n",
phy_id, phy->addr); /* At the time of this writing, The M88 part is * the only supported SGMII PHY product.
*/ if (phy_id == M88_VENDOR) break;
} else {
hw_dbg("PHY address %u was unreadable\n", phy->addr);
}
}
/* A valid PHY type couldn't be found. */ if (phy->addr == 8) {
phy->addr = 0;
ret_val = -E1000_ERR_PHY; goto out;
} else {
ret_val = igb_get_phy_id(hw);
}
/* restore previous sfp cage power state */
wr32(E1000_CTRL_EXT, ctrl_ext);
out: return ret_val;
}
/** * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset * @hw: pointer to the HW structure * * Resets the PHY using the serial gigabit media independent interface.
**/ static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
{ struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
/* This isn't a true "hard" reset, but is the only reset * available to us at this time.
*/
hw_dbg("Soft resetting SGMII attached PHY...\n");
/* SFP documentation requires the following to configure the SPF module * to work on SGMII. No further documentation is given.
*/
ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084); if (ret_val) goto out;
ret_val = igb_phy_sw_reset(hw); if (ret_val) goto out;
if (phy->id == M88E1512_E_PHY_ID)
ret_val = igb_initialize_M88E1512_phy(hw); if (phy->id == M88E1543_E_PHY_ID)
ret_val = igb_initialize_M88E1543_phy(hw);
out: return ret_val;
}
/** * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state * @hw: pointer to the HW structure * @active: true to enable LPLU, false to disable * * Sets the LPLU D0 state according to the active flag. When * activating LPLU this function also disables smart speed * and vice versa. LPLU will not be activated unless the * device autonegotiation advertisement meets standards of * either 10 or 10/100 or 10/100/1000 at all duplexes. * This is a function pointer entry point only called by * PHY setup routines.
**/ static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
{ struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
u16 data;
ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); if (ret_val) goto out;
if (active) {
data |= IGP02E1000_PM_D0_LPLU;
ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
data); if (ret_val) goto out;
/* When LPLU is enabled, we should disable SmartSpeed */
ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
&data);
data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
data); if (ret_val) goto out;
} else {
data &= ~IGP02E1000_PM_D0_LPLU;
ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
data); /* LPLU and SmartSpeed are mutually exclusive. LPLU is used * during Dx states where the power conservation is most * important. During driver activity we should enable * SmartSpeed, so performance is maintained.
*/ if (phy->smart_speed == e1000_smart_speed_on) {
ret_val = phy->ops.read_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &data); if (ret_val) goto out;
data |= IGP01E1000_PSCFR_SMART_SPEED;
ret_val = phy->ops.write_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, data); if (ret_val) goto out;
} elseif (phy->smart_speed == e1000_smart_speed_off) {
ret_val = phy->ops.read_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &data); if (ret_val) goto out;
data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = phy->ops.write_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, data); if (ret_val) goto out;
}
}
out: return ret_val;
}
/** * igb_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state * @hw: pointer to the HW structure * @active: true to enable LPLU, false to disable * * Sets the LPLU D0 state according to the active flag. When * activating LPLU this function also disables smart speed * and vice versa. LPLU will not be activated unless the * device autonegotiation advertisement meets standards of * either 10 or 10/100 or 10/100/1000 at all duplexes. * This is a function pointer entry point only called by * PHY setup routines.
**/ static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active)
{ struct e1000_phy_info *phy = &hw->phy;
u16 data;
data = rd32(E1000_82580_PHY_POWER_MGMT);
if (active) {
data |= E1000_82580_PM_D0_LPLU;
/* When LPLU is enabled, we should disable SmartSpeed */
data &= ~E1000_82580_PM_SPD;
} else {
data &= ~E1000_82580_PM_D0_LPLU;
/* LPLU and SmartSpeed are mutually exclusive. LPLU is used * during Dx states where the power conservation is most * important. During driver activity we should enable * SmartSpeed, so performance is maintained.
*/ if (phy->smart_speed == e1000_smart_speed_on)
data |= E1000_82580_PM_SPD; elseif (phy->smart_speed == e1000_smart_speed_off)
data &= ~E1000_82580_PM_SPD; }
/** * igb_set_d3_lplu_state_82580 - Sets low power link up state for D3 * @hw: pointer to the HW structure * @active: boolean used to enable/disable lplu * * Success returns 0, Failure returns 1 * * The low power link up (lplu) state is set to the power management level D3 * and SmartSpeed is disabled when active is true, else clear lplu for D3 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU * is used during Dx states where the power conservation is most important. * During driver activity, SmartSpeed should be enabled so performance is * maintained.
**/ static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active)
{ struct e1000_phy_info *phy = &hw->phy;
u16 data;
data = rd32(E1000_82580_PHY_POWER_MGMT);
if (!active) {
data &= ~E1000_82580_PM_D3_LPLU; /* LPLU and SmartSpeed are mutually exclusive. LPLU is used * during Dx states where the power conservation is most * important. During driver activity we should enable * SmartSpeed, so performance is maintained.
*/ if (phy->smart_speed == e1000_smart_speed_on)
data |= E1000_82580_PM_SPD; elseif (phy->smart_speed == e1000_smart_speed_off)
data &= ~E1000_82580_PM_SPD;
} elseif ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
(phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
(phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
data |= E1000_82580_PM_D3_LPLU; /* When LPLU is enabled, we should disable SmartSpeed */
data &= ~E1000_82580_PM_SPD;
}
/** * igb_acquire_nvm_82575 - Request for access to EEPROM * @hw: pointer to the HW structure * * Acquire the necessary semaphores for exclusive access to the EEPROM. * Set the EEPROM access request bit and wait for EEPROM access grant bit. * Return successful if access grant bit set, else clear the request for * EEPROM access and return -E1000_ERR_NVM (-1).
**/ static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
{
s32 ret_val;
ret_val = hw->mac.ops.acquire_swfw_sync(hw, E1000_SWFW_EEP_SM); if (ret_val) goto out;
ret_val = igb_acquire_nvm(hw);
if (ret_val)
hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
out: return ret_val;
}
/** * igb_release_nvm_82575 - Release exclusive access to EEPROM * @hw: pointer to the HW structure * * Stop any current commands to the EEPROM and clear the EEPROM request bit, * then release the semaphores acquired.
**/ staticvoid igb_release_nvm_82575(struct e1000_hw *hw)
{
igb_release_nvm(hw);
hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
}
/** * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore * @hw: pointer to the HW structure * @mask: specifies which semaphore to acquire * * Acquire the SW/FW semaphore to access the PHY or NVM. The mask * will also specify which port we're acquiring the lock for.
**/ static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 ret_val = 0;
s32 i = 0, timeout = 200;
while (i < timeout) { if (igb_get_hw_semaphore(hw)) {
ret_val = -E1000_ERR_SWFW_SYNC; goto out;
}
swfw_sync = rd32(E1000_SW_FW_SYNC); if (!(swfw_sync & (fwmask | swmask))) break;
/* Firmware currently using resource (fwmask) * or other software thread using resource (swmask)
*/
igb_put_hw_semaphore(hw);
mdelay(5);
i++;
}
if (i == timeout) {
hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
ret_val = -E1000_ERR_SWFW_SYNC; goto out;
}
/** * igb_release_swfw_sync_82575 - Release SW/FW semaphore * @hw: pointer to the HW structure * @mask: specifies which semaphore to acquire * * Release the SW/FW semaphore used to access the PHY or NVM. The mask * will also specify which port we're releasing the lock for.
**/ staticvoid igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
while (igb_get_hw_semaphore(hw) != 0)
; /* Empty */
/** * igb_get_cfg_done_82575 - Read config done bit * @hw: pointer to the HW structure * * Read the management control register for the config done bit for * completion status. NOTE: silicon which is EEPROM-less will fail trying * to read the config done bit, so an error is *ONLY* logged and returns * 0. If we were to return with error, EEPROM-less silicon * would not be able to be reset or change link.
**/ static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
{
s32 timeout = PHY_CFG_TIMEOUT;
u32 mask = E1000_NVM_CFG_DONE_PORT_0;
while (timeout) { if (rd32(E1000_EEMNGCTL) & mask) break;
usleep_range(1000, 2000);
timeout--;
} if (!timeout)
hw_dbg("MNG configuration cycle has not completed.\n");
/* If EEPROM is not marked present, init the PHY manually */ if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
(hw->phy.type == e1000_phy_igp_3))
igb_phy_init_script_igp3(hw);
return 0;
}
/** * igb_get_link_up_info_82575 - Get link speed/duplex info * @hw: pointer to the HW structure * @speed: stores the current speed * @duplex: stores the current duplex * * This is a wrapper function, if using the serial gigabit media independent * interface, use PCS to retrieve the link speed and duplex information. * Otherwise, use the generic function to get the link speed and duplex info.
**/ static s32 igb_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed,
u16 *duplex)
{
s32 ret_val;
/** * igb_check_for_link_82575 - Check for link * @hw: pointer to the HW structure * * If sgmii is enabled, then use the pcs register to determine link, otherwise * use the generic interface for determining link.
**/ static s32 igb_check_for_link_82575(struct e1000_hw *hw)
{
s32 ret_val;
u16 speed, duplex;
if (hw->phy.media_type != e1000_media_type_copper) {
ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
&duplex); /* Use this flag to determine if link needs to be checked or * not. If we have link clear the flag so that we do not * continue to check for link.
*/
hw->mac.get_link_status = !hw->mac.serdes_has_link;
/* Configure Flow Control now that Auto-Neg has completed. * First, we need to restore the desired flow control * settings because we may have had to re-autoneg with a * different link partner.
*/
ret_val = igb_config_fc_after_link_up(hw); if (ret_val)
hw_dbg("Error configuring flow control\n");
} else {
ret_val = igb_check_for_copper_link(hw);
}
return ret_val;
}
/** * igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown * @hw: pointer to the HW structure
**/ void igb_power_up_serdes_link_82575(struct e1000_hw *hw)
{
u32 reg;
if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
!igb_sgmii_active_82575(hw)) return;
/* Enable PCS to turn on link */
reg = rd32(E1000_PCS_CFG0);
reg |= E1000_PCS_CFG_PCS_EN;
wr32(E1000_PCS_CFG0, reg);
/* Power up the laser */
reg = rd32(E1000_CTRL_EXT);
reg &= ~E1000_CTRL_EXT_SDP3_DATA;
wr32(E1000_CTRL_EXT, reg);
/* flush the write to verify completion */
wrfl();
usleep_range(1000, 2000);
}
/** * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex * @hw: pointer to the HW structure * @speed: stores the current speed * @duplex: stores the current duplex * * Using the physical coding sub-layer (PCS), retrieve the current speed and * duplex, then store the values in the pointers provided.
**/ static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
u16 *duplex)
{ struct e1000_mac_info *mac = &hw->mac;
u32 pcs, status;
/* Set up defaults for the return values of this function */
mac->serdes_has_link = false;
*speed = 0;
*duplex = 0;
/* Read the PCS Status register for link state. For non-copper mode, * the status register is not accurate. The PCS status register is * used instead.
*/
pcs = rd32(E1000_PCS_LSTAT);
/* The link up bit determines when link is up on autoneg. The sync ok * gets set once both sides sync up and agree upon link. Stable link * can be determined by checking for both link up and link sync ok
*/ if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
mac->serdes_has_link = true;
/* Detect and store PCS speed */ if (pcs & E1000_PCS_LSTS_SPEED_1000)
*speed = SPEED_1000; elseif (pcs & E1000_PCS_LSTS_SPEED_100)
*speed = SPEED_100; else
*speed = SPEED_10;
/* Detect and store PCS duplex */ if (pcs & E1000_PCS_LSTS_DUPLEX_FULL)
*duplex = FULL_DUPLEX; else
*duplex = HALF_DUPLEX;
/* Check if it is an I354 2.5Gb backplane connection. */ if (mac->type == e1000_i354) {
status = rd32(E1000_STATUS); if ((status & E1000_STATUS_2P5_SKU) &&
!(status & E1000_STATUS_2P5_SKU_OVER)) {
*speed = SPEED_2500;
*duplex = FULL_DUPLEX;
hw_dbg("2500 Mbs, ");
hw_dbg("Full Duplex\n");
}
}
}
return 0;
}
/** * igb_shutdown_serdes_link_82575 - Remove link during power down * @hw: pointer to the HW structure * * In the case of fiber serdes, shut down optics and PCS on driver unload * when management pass thru is not enabled.
**/ void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
{
u32 reg;
if (hw->phy.media_type != e1000_media_type_internal_serdes &&
igb_sgmii_active_82575(hw)) return;
if (!igb_enable_mng_pass_thru(hw)) { /* Disable PCS to turn off link */
reg = rd32(E1000_PCS_CFG0);
reg &= ~E1000_PCS_CFG_PCS_EN;
wr32(E1000_PCS_CFG0, reg);
/* flush the write to verify completion */
wrfl();
usleep_range(1000, 2000);
}
}
/** * igb_reset_hw_82575 - Reset hardware * @hw: pointer to the HW structure * * This resets the hardware into a known state. This is a * function pointer entry point called by the api module.
**/ static s32 igb_reset_hw_82575(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val;
/* Prevent the PCI-E bus from sticking if there is no TLP connection * on the last TLP read/write transaction when MAC is reset.
*/
ret_val = igb_disable_pcie_master(hw); if (ret_val)
hw_dbg("PCI-E Master disable polling has failed.\n");
/* set the completion timeout for interface */
ret_val = igb_set_pcie_completion_timeout(hw); if (ret_val)
hw_dbg("PCI-E Set completion timeout has failed.\n");
hw_dbg("Masking off all interrupts\n");
wr32(E1000_IMC, 0xffffffff);
hw_dbg("Issuing a global reset to MAC\n");
wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
ret_val = igb_get_auto_rd_done(hw); if (ret_val) { /* When auto config read does not complete, do not * return with an error. This can happen in situations * where there is no eeprom and prevents getting link.
*/
hw_dbg("Auto Read Done did not complete\n");
}
/* If EEPROM is not present, run manual init scripts */ if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
igb_reset_init_script_82575(hw);
/* Clear any pending interrupt events. */
wr32(E1000_IMC, 0xffffffff);
rd32(E1000_ICR);
/* Install any alternate MAC address into RAR0 */
ret_val = igb_check_alt_mac_addr(hw);
return ret_val;
}
/** * igb_init_hw_82575 - Initialize hardware * @hw: pointer to the HW structure * * This inits the hardware readying it for operation.
**/ static s32 igb_init_hw_82575(struct e1000_hw *hw)
{ struct e1000_mac_info *mac = &hw->mac;
s32 ret_val;
u16 i, rar_count = mac->rar_entry_count;
if ((hw->mac.type >= e1000_i210) &&
!(igb_get_flash_presence_i210(hw))) {
ret_val = igb_pll_workaround_i210(hw); if (ret_val) return ret_val;
}
/* Initialize identification LED */
ret_val = igb_id_led_init(hw); if (ret_val) {
hw_dbg("Error initializing identification LED\n"); /* This is not fatal and we should not stop init due to this */
}
/* Disabling VLAN filtering */
hw_dbg("Initializing the IEEE VLAN\n");
igb_clear_vfta(hw);
/* Setup the receive address */
igb_init_rx_addrs(hw, rar_count);
/* Zero out the Multicast HASH table */
hw_dbg("Zeroing the MTA\n"); for (i = 0; i < mac->mta_reg_count; i++)
array_wr32(E1000_MTA, i, 0);
/* Zero out the Unicast HASH table */
hw_dbg("Zeroing the UTA\n"); for (i = 0; i < mac->uta_reg_count; i++)
array_wr32(E1000_UTA, i, 0);
/* Setup link and flow control */
ret_val = igb_setup_link(hw);
/* Clear all of the statistics registers (clear on read). It is * important that we do this after we have tried to establish link * because the symbol error count will increment wildly if there * is no link.
*/
igb_clear_hw_cntrs_82575(hw); return ret_val;
}
/** * igb_setup_copper_link_82575 - Configure copper link settings * @hw: pointer to the HW structure * * Configures the link for auto-neg or forced speed and duplex. Then we check * for link, once link is established calls to configure collision distance * and flow control are called.
**/ static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val;
u32 phpm_reg;
/* Clear Go Link Disconnect bit on supported devices */ switch (hw->mac.type) { case e1000_82580: case e1000_i350: case e1000_i210: case e1000_i211:
phpm_reg = rd32(E1000_82580_PHY_POWER_MGMT);
phpm_reg &= ~E1000_82580_PM_GO_LINKD;
wr32(E1000_82580_PHY_POWER_MGMT, phpm_reg); break; default: break;
}
ret_val = igb_setup_serdes_link_82575(hw); if (ret_val) goto out;
if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) { /* allow time for SFP cage time to power up phy */
msleep(300);
ret_val = hw->phy.ops.reset(hw); if (ret_val) {
hw_dbg("Error resetting the PHY.\n"); goto out;
}
} switch (hw->phy.type) { case e1000_phy_i210: case e1000_phy_m88: switch (hw->phy.id) { case I347AT4_E_PHY_ID: case M88E1112_E_PHY_ID: case M88E1543_E_PHY_ID: case M88E1512_E_PHY_ID: case I210_I_PHY_ID:
ret_val = igb_copper_link_setup_m88_gen2(hw); break; default:
ret_val = igb_copper_link_setup_m88(hw); break;
} break; case e1000_phy_igp_3:
ret_val = igb_copper_link_setup_igp(hw); break; case e1000_phy_82580:
ret_val = igb_copper_link_setup_82580(hw); break; case e1000_phy_bcm54616:
ret_val = 0; break; default:
ret_val = -E1000_ERR_PHY; break;
}
/** * igb_setup_serdes_link_82575 - Setup link for serdes * @hw: pointer to the HW structure * * Configure the physical coding sub-layer (PCS) link. The PCS link is * used on copper connections where the serialized gigabit media independent * interface (sgmii), or serdes fiber is being used. Configures the link * for auto-negotiation or forces speed/duplex.
**/ static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
{
u32 ctrl_ext, ctrl_reg, reg, anadv_reg; bool pcs_autoneg;
s32 ret_val = 0;
u16 data;
if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
!igb_sgmii_active_82575(hw)) return ret_val;
/* On the 82575, SerDes loopback mode persists until it is * explicitly turned off or a power cycle is performed. A read to * the register does not indicate its status. Therefore, we ensure * loopback mode is disabled during initialization.
*/
wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
/* power on the sfp cage if present and turn on I2C */
ctrl_ext = rd32(E1000_CTRL_EXT);
ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
ctrl_ext |= E1000_CTRL_I2C_ENA;
wr32(E1000_CTRL_EXT, ctrl_ext);
if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) { /* set both sw defined pins */
ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1;
/* Set switch control to serdes energy detect */
reg = rd32(E1000_CONNSW);
reg |= E1000_CONNSW_ENRGSRC;
wr32(E1000_CONNSW, reg);
}
reg = rd32(E1000_PCS_LCTL);
/* default pcs_autoneg to the same setting as mac autoneg */
pcs_autoneg = hw->mac.autoneg;
switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) { case E1000_CTRL_EXT_LINK_MODE_SGMII: /* sgmii mode lets the phy handle forcing speed/duplex */
pcs_autoneg = true; /* autoneg time out should be disabled for SGMII mode */
reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT); break; case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: /* disable PCS autoneg and support parallel detect only */
pcs_autoneg = false;
fallthrough; default: if (hw->mac.type == e1000_82575 ||
hw->mac.type == e1000_82576) {
ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data); if (ret_val) {
hw_dbg(KERN_DEBUG "NVM Read Error\n\n"); return ret_val;
}
if (data & E1000_EEPROM_PCS_AUTONEG_DISABLE_BIT)
pcs_autoneg = false;
}
/* non-SGMII modes only supports a speed of 1000/Full for the * link so it is best to just force the MAC and let the pcs * link either autoneg or be forced to 1000/Full
*/
ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD |
E1000_CTRL_FD | E1000_CTRL_FRCDPX;
/* set speed of 1000/Full if speed/duplex is forced */
reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL; break;
}
wr32(E1000_CTRL, ctrl_reg);
/* New SerDes mode allows for forcing speed or autonegotiating speed * at 1gb. Autoneg should be default set by most drivers. This is the * mode that will be compatible with older link partners and switches. * However, both are supported by the hardware and some drivers/tools.
*/
reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP |
E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK);
if (pcs_autoneg) { /* Set PCS register for autoneg */
reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */
E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */
/* Disable force flow control for autoneg */
reg &= ~E1000_PCS_LCTL_FORCE_FCTRL;
/* Configure flow control advertisement for autoneg */
anadv_reg = rd32(E1000_PCS_ANADV);
anadv_reg &= ~(E1000_TXCW_ASM_DIR | E1000_TXCW_PAUSE); switch (hw->fc.requested_mode) { case e1000_fc_full: case e1000_fc_rx_pause:
anadv_reg |= E1000_TXCW_ASM_DIR;
anadv_reg |= E1000_TXCW_PAUSE; break; case e1000_fc_tx_pause:
anadv_reg |= E1000_TXCW_ASM_DIR; break; default: break;
}
wr32(E1000_PCS_ANADV, anadv_reg);
hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg);
} else { /* Set PCS register for forced link */
reg |= E1000_PCS_LCTL_FSD; /* Force Speed */
/* Force flow control for forced link */
reg |= E1000_PCS_LCTL_FORCE_FCTRL;
if (!pcs_autoneg && !igb_sgmii_active_82575(hw))
igb_force_mac_fc(hw);
return ret_val;
}
/** * igb_sgmii_active_82575 - Return sgmii state * @hw: pointer to the HW structure * * 82575 silicon has a serialized gigabit media independent interface (sgmii) * which can be enabled for use in the embedded applications. Simply * return the current state of the sgmii interface.
**/ staticbool igb_sgmii_active_82575(struct e1000_hw *hw)
{ struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; return dev_spec->sgmii_active;
}
/** * igb_reset_init_script_82575 - Inits HW defaults after reset * @hw: pointer to the HW structure * * Inits recommended HW defaults after a reset when there is no EEPROM * detected. This is only for the 82575.
**/ static s32 igb_reset_init_script_82575(struct e1000_hw *hw)
{ if (hw->mac.type == e1000_82575) {
hw_dbg("Running reset init script for 82575\n"); /* SerDes configuration via SERDESCTRL */
igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C);
igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78);
igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23);
igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15);
/** * igb_read_mac_addr_82575 - Read device MAC address * @hw: pointer to the HW structure
**/ static s32 igb_read_mac_addr_82575(struct e1000_hw *hw)
{
s32 ret_val = 0;
/* If there's an alternate MAC address place it in RAR0 * so that it will override the Si installed default perm * address.
*/
ret_val = igb_check_alt_mac_addr(hw); if (ret_val) goto out;
ret_val = igb_read_mac_addr(hw);
out: return ret_val;
}
/** * igb_power_down_phy_copper_82575 - Remove link during PHY power down * @hw: pointer to the HW structure * * In the case of a PHY power down to save power, or to turn off link during a * driver unload, or wake on lan is not enabled, remove the link.
**/ void igb_power_down_phy_copper_82575(struct e1000_hw *hw)
{ /* If the management interface is not enabled, then power down */ if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw)))
igb_power_down_phy_copper(hw);
}
/** * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters * @hw: pointer to the HW structure * * Clears the hardware counters by reading the counter registers.
**/ staticvoid igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
{
igb_clear_hw_cntrs_base(hw);
/* This register should not be read in copper configurations */ if (hw->phy.media_type == e1000_media_type_internal_serdes ||
igb_sgmii_active_82575(hw))
rd32(E1000_SCVPC);
}
/** * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable * @hw: pointer to the HW structure * * After rx enable if manageability is enabled then there is likely some * bad data at the start of the fifo and possibly in the DMA fifo. This * function clears the fifos and flushes any packets that came in as rx was * being enabled.
**/ void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
{
u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; int i, ms_wait;
/* disable IPv6 options as per hardware errata */
rfctl = rd32(E1000_RFCTL);
rfctl |= E1000_RFCTL_IPV6_EX_DIS;
wr32(E1000_RFCTL, rfctl);
if (hw->mac.type != e1000_82575 ||
!(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN)) return;
/* Disable all RX queues */ for (i = 0; i < 4; i++) {
rxdctl[i] = rd32(E1000_RXDCTL(i));
wr32(E1000_RXDCTL(i),
rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
} /* Poll all queues to verify they have shut down */ for (ms_wait = 0; ms_wait < 10; ms_wait++) {
usleep_range(1000, 2000);
rx_enabled = 0; for (i = 0; i < 4; i++)
rx_enabled |= rd32(E1000_RXDCTL(i)); if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE)) break;
}
if (ms_wait == 10)
hw_dbg("Queue disable timed out after 10ms\n");
/* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all * incoming packets are rejected. Set enable and wait 2ms so that * any packet that was coming in as RCTL.EN was set is flushed
*/
wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
/* Enable RX queues that were previously enabled and restore our * previous state
*/ for (i = 0; i < 4; i++)
wr32(E1000_RXDCTL(i), rxdctl[i]);
wr32(E1000_RCTL, rctl);
wrfl();
/** * igb_set_pcie_completion_timeout - set pci-e completion timeout * @hw: pointer to the HW structure * * The defaults for 82575 and 82576 should be in the range of 50us to 50ms, * however the hardware default for these parts is 500us to 1ms which is less * than the 10ms recommended by the pci-e spec. To address this we need to * increase the value to either 10ms to 200ms for capability version 1 config, * or 16ms to 55ms for version 2.
**/ static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw)
{
u32 gcr = rd32(E1000_GCR);
s32 ret_val = 0;
u16 pcie_devctl2;
/* only take action if timeout value is defaulted to 0 */ if (gcr & E1000_GCR_CMPL_TMOUT_MASK) goto out;
/* if capabilities version is type 1 we can write the * timeout of 10ms to 200ms through the GCR register
*/ if (!(gcr & E1000_GCR_CAP_VER2)) {
gcr |= E1000_GCR_CMPL_TMOUT_10ms; goto out;
}
/* for version 2 capabilities we need to write the config space * directly in order to set the completion timeout value for * 16ms to 55ms
*/
ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
&pcie_devctl2); if (ret_val) goto out;
/** * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing * @hw: pointer to the hardware struct * @enable: state to enter, either enabled or disabled * @pf: Physical Function pool - do not set anti-spoofing for the PF * * enables/disables L2 switch anti-spoofing functionality.
**/ void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
{
u32 reg_val, reg_offset;
switch (hw->mac.type) { case e1000_82576:
reg_offset = E1000_DTXSWC; break; case e1000_i350: case e1000_i354:
reg_offset = E1000_TXSWC; break; default: return;
}
reg_val = rd32(reg_offset); if (enable) {
reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK |
E1000_DTXSWC_VLAN_SPOOF_MASK); /* The PF can spoof - it has to in order to * support emulation mode NICs
*/
reg_val ^= (BIT(pf) | BIT(pf + MAX_NUM_VFS));
} else {
reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
E1000_DTXSWC_VLAN_SPOOF_MASK);
}
wr32(reg_offset, reg_val);
}
/** * igb_vmdq_set_loopback_pf - enable or disable vmdq loopback * @hw: pointer to the hardware struct * @enable: state to enter, either enabled or disabled * * enables/disables L2 switch loopback functionality.
**/ void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
{
u32 dtxswc;
switch (hw->mac.type) { case e1000_82576:
dtxswc = rd32(E1000_DTXSWC); if (enable)
dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; else
dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
wr32(E1000_DTXSWC, dtxswc); break; case e1000_i354: case e1000_i350:
dtxswc = rd32(E1000_TXSWC); if (enable)
dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; else
dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
wr32(E1000_TXSWC, dtxswc); break; default: /* Currently no other hardware supports loopback */ break;
}
}
/** * igb_vmdq_set_replication_pf - enable or disable vmdq replication * @hw: pointer to the hardware struct * @enable: state to enter, either enabled or disabled * * enables/disables replication of packets across multiple pools.
**/ void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable)
{
u32 vt_ctl = rd32(E1000_VT_CTL);
if (enable)
vt_ctl |= E1000_VT_CTL_VM_REPL_EN; else
vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN;
wr32(E1000_VT_CTL, vt_ctl);
}
/** * igb_read_phy_reg_82580 - Read 82580 MDI control register * @hw: pointer to the HW structure * @offset: register offset to be read * @data: pointer to the read data * * Reads the MDI control register in the PHY at offset and stores the * information read to data.
**/
s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data)
{
s32 ret_val;
ret_val = hw->phy.ops.acquire(hw); if (ret_val) goto out;
/** * igb_write_phy_reg_82580 - Write 82580 MDI control register * @hw: pointer to the HW structure * @offset: register offset to write to * @data: data to write to register at offset * * Writes data to MDI control register in the PHY at offset.
**/
s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data)
{
s32 ret_val;
ret_val = hw->phy.ops.acquire(hw); if (ret_val) goto out;
/** * igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits * @hw: pointer to the HW structure * * This resets the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on * the values found in the EEPROM. This addresses an issue in which these * bits are not restored from EEPROM after reset.
**/ static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw)
{
s32 ret_val = 0;
u32 mdicnfg;
u16 nvm_data = 0;
if (hw->mac.type != e1000_82580) goto out; if (!igb_sgmii_active_82575(hw)) goto out;
/** * igb_reset_hw_82580 - Reset hardware * @hw: pointer to the HW structure * * This resets function or entire device (all ports, etc.) * to a known state.
**/ static s32 igb_reset_hw_82580(struct e1000_hw *hw)
{
s32 ret_val = 0; /* BH SW mailbox bit in SW_FW_SYNC */
u16 swmbsw_mask = E1000_SW_SYNCH_MB;
u32 ctrl; bool global_device_reset = hw->dev_spec._82575.global_device_reset;
hw->dev_spec._82575.global_device_reset = false;
/* due to hw errata, global device reset doesn't always * work on 82580
*/ if (hw->mac.type == e1000_82580)
global_device_reset = false;
/* Get current control state. */
ctrl = rd32(E1000_CTRL);
/* Prevent the PCI-E bus from sticking if there is no TLP connection * on the last TLP read/write transaction when MAC is reset.
*/
ret_val = igb_disable_pcie_master(hw); if (ret_val)
hw_dbg("PCI-E Master disable polling has failed.\n");
hw_dbg("Masking off all interrupts\n");
wr32(E1000_IMC, 0xffffffff);
wr32(E1000_RCTL, 0);
wr32(E1000_TCTL, E1000_TCTL_PSP);
wrfl();
usleep_range(10000, 11000);
/* Determine whether or not a global dev reset is requested */ if (global_device_reset &&
hw->mac.ops.acquire_swfw_sync(hw, swmbsw_mask))
global_device_reset = false;
/* Add delay to insure DEV_RST has time to complete */ if (global_device_reset)
usleep_range(5000, 6000);
ret_val = igb_get_auto_rd_done(hw); if (ret_val) { /* When auto config read does not complete, do not * return with an error. This can happen in situations * where there is no eeprom and prevents getting link.
*/
hw_dbg("Auto Read Done did not complete\n");
}
/* clear global device reset status bit */
wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET);
/* Clear any pending interrupt events. */
wr32(E1000_IMC, 0xffffffff);
rd32(E1000_ICR);
ret_val = igb_reset_mdicnfg_82580(hw); if (ret_val)
hw_dbg("Could not reset MDICNFG based on EEPROM\n");
/* Install any alternate MAC address into RAR0 */
ret_val = igb_check_alt_mac_addr(hw);
/* Release semaphore */ if (global_device_reset)
hw->mac.ops.release_swfw_sync(hw, swmbsw_mask);
return ret_val;
}
/** * igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size * @data: data received by reading RXPBS register * * The 82580 uses a table based approach for packet buffer allocation sizes. * This function converts the retrieved value into the correct table value * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 * 0x0 36 72 144 1 2 4 8 16 * 0x8 35 70 140 rsv rsv rsv rsv rsv
*/
u16 igb_rxpbs_adjust_82580(u32 data)
{
u16 ret_val = 0;
if (data < ARRAY_SIZE(e1000_82580_rxpbs_table))
ret_val = e1000_82580_rxpbs_table[data];
return ret_val;
}
/** * igb_validate_nvm_checksum_with_offset - Validate EEPROM * checksum * @hw: pointer to the HW structure * @offset: offset in words of the checksum protected region * * Calculates the EEPROM checksum by reading/adding each word of the EEPROM * and then verifies that the sum of the EEPROM is equal to 0xBABA.
**/ static s32 igb_validate_nvm_checksum_with_offset(struct e1000_hw *hw,
u16 offset)
{
s32 ret_val = 0;
u16 checksum = 0;
u16 i, nvm_data;
for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) {
ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); if (ret_val) {
hw_dbg("NVM Read Error\n"); goto out;
}
checksum += nvm_data;
}
/** * igb_update_nvm_checksum_with_offset - Update EEPROM * checksum * @hw: pointer to the HW structure * @offset: offset in words of the checksum protected region * * Updates the EEPROM checksum by reading/adding each word of the EEPROM * up to the checksum. Then calculates the EEPROM checksum and writes the * value to the EEPROM.
**/ static s32 igb_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset)
{
s32 ret_val;
u16 checksum = 0;
u16 i, nvm_data;
for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) {
ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); if (ret_val) {
hw_dbg("NVM Read Error while updating checksum.\n"); goto out;
}
checksum += nvm_data;
}
checksum = (u16) NVM_SUM - checksum;
--> --------------------
--> maximum size reached
--> --------------------
Messung V0.5
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