// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 1999 - 2018 Intel Corporation. */ #include #include #include #include "ixgbe.h" #include "ixgbe_phy.h" #define IXGBE_82598_MAX_TX_QUEUES 32 #define IXGBE_82598_MAX_RX_QUEUES 64 #define IXGBE_82598_RAR_ENTRIES 16 #define IXGBE_82598_MC_TBL_SIZE 128 #define IXGBE_82598_VFT_TBL_SIZE 128 #define IXGBE_82598_RX_PB_SIZE 512 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw, ixgbe_link_speed speed, bool autoneg_wait_to_complete); static s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset, u8 *eeprom_data); /** * ixgbe_set_pcie_completion_timeout - set pci-e completion timeout * @hw: pointer to the HW structure * * The defaults for 82598 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 250ms for capability version 1 config, * or 16ms to 55ms for version 2. **/ static void ixgbe_set_pcie_completion_timeout(struct ixgbe_hw *hw) { u32 gcr = IXGBE_READ_REG(hw, IXGBE_GCR); u16 pcie_devctl2; if (ixgbe_removed(hw->hw_addr)) return; /* only take action if timeout value is defaulted to 0 */ if (gcr & IXGBE_GCR_CMPL_TMOUT_MASK) goto out; /* * if capababilities version is type 1 we can write the * timeout of 10ms to 250ms through the GCR register */ if (!(gcr & IXGBE_GCR_CAP_VER2)) { gcr |= IXGBE_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 */ pcie_devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2); pcie_devctl2 |= IXGBE_PCI_DEVICE_CONTROL2_16ms; ixgbe_write_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2, pcie_devctl2); out: /* disable completion timeout resend */ gcr &= ~IXGBE_GCR_CMPL_TMOUT_RESEND; IXGBE_WRITE_REG(hw, IXGBE_GCR, gcr); } static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw) { struct ixgbe_mac_info *mac = &hw->mac; /* Call PHY identify routine to get the phy type */ ixgbe_identify_phy_generic(hw); mac->mcft_size = IXGBE_82598_MC_TBL_SIZE; mac->vft_size = IXGBE_82598_VFT_TBL_SIZE; mac->num_rar_entries = IXGBE_82598_RAR_ENTRIES; mac->rx_pb_size = IXGBE_82598_RX_PB_SIZE; mac->max_rx_queues = IXGBE_82598_MAX_RX_QUEUES; mac->max_tx_queues = IXGBE_82598_MAX_TX_QUEUES; mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw); return 0; } /** * ixgbe_init_phy_ops_82598 - PHY/SFP specific init * @hw: pointer to hardware structure * * Initialize any function pointers that were not able to be * set during get_invariants because the PHY/SFP type was * not known. Perform the SFP init if necessary. * **/ static s32 ixgbe_init_phy_ops_82598(struct ixgbe_hw *hw) { struct ixgbe_mac_info *mac = &hw->mac; struct ixgbe_phy_info *phy = &hw->phy; s32 ret_val; u16 list_offset, data_offset; /* Identify the PHY */ phy->ops.identify(hw); /* Overwrite the link function pointers if copper PHY */ if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) { mac->ops.setup_link = &ixgbe_setup_copper_link_82598; mac->ops.get_link_capabilities = &ixgbe_get_copper_link_capabilities_generic; } switch (hw->phy.type) { case ixgbe_phy_tn: phy->ops.setup_link = &ixgbe_setup_phy_link_tnx; phy->ops.check_link = &ixgbe_check_phy_link_tnx; break; case ixgbe_phy_nl: phy->ops.reset = &ixgbe_reset_phy_nl; /* Call SFP+ identify routine to get the SFP+ module type */ ret_val = phy->ops.identify_sfp(hw); if (ret_val) return ret_val; if (hw->phy.sfp_type == ixgbe_sfp_type_unknown) return -EOPNOTSUPP; /* Check to see if SFP+ module is supported */ ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset, &data_offset); if (ret_val) return -EOPNOTSUPP; break; default: break; } return 0; } /** * ixgbe_start_hw_82598 - Prepare hardware for Tx/Rx * @hw: pointer to hardware structure * * Starts the hardware using the generic start_hw function. * Disables relaxed ordering for archs other than SPARC * Then set pcie completion timeout * **/ static s32 ixgbe_start_hw_82598(struct ixgbe_hw *hw) { s32 ret_val; ret_val = ixgbe_start_hw_generic(hw); if (ret_val) return ret_val; /* set the completion timeout for interface */ ixgbe_set_pcie_completion_timeout(hw); return 0; } /** * ixgbe_get_link_capabilities_82598 - Determines link capabilities * @hw: pointer to hardware structure * @speed: pointer to link speed * @autoneg: boolean auto-negotiation value * * Determines the link capabilities by reading the AUTOC register. **/ static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw, ixgbe_link_speed *speed, bool *autoneg) { u32 autoc = 0; /* * Determine link capabilities based on the stored value of AUTOC, * which represents EEPROM defaults. If AUTOC value has not been * stored, use the current register value. */ if (hw->mac.orig_link_settings_stored) autoc = hw->mac.orig_autoc; else autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); switch (autoc & IXGBE_AUTOC_LMS_MASK) { case IXGBE_AUTOC_LMS_1G_LINK_NO_AN: *speed = IXGBE_LINK_SPEED_1GB_FULL; *autoneg = false; break; case IXGBE_AUTOC_LMS_10G_LINK_NO_AN: *speed = IXGBE_LINK_SPEED_10GB_FULL; *autoneg = false; break; case IXGBE_AUTOC_LMS_1G_AN: *speed = IXGBE_LINK_SPEED_1GB_FULL; *autoneg = true; break; case IXGBE_AUTOC_LMS_KX4_AN: case IXGBE_AUTOC_LMS_KX4_AN_1G_AN: *speed = IXGBE_LINK_SPEED_UNKNOWN; if (autoc & IXGBE_AUTOC_KX4_SUPP) *speed |= IXGBE_LINK_SPEED_10GB_FULL; if (autoc & IXGBE_AUTOC_KX_SUPP) *speed |= IXGBE_LINK_SPEED_1GB_FULL; *autoneg = true; break; default: return -EIO; } return 0; } /** * ixgbe_get_media_type_82598 - Determines media type * @hw: pointer to hardware structure * * Returns the media type (fiber, copper, backplane) **/ static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw) { /* Detect if there is a copper PHY attached. */ switch (hw->phy.type) { case ixgbe_phy_cu_unknown: case ixgbe_phy_tn: return ixgbe_media_type_copper; default: break; } /* Media type for I82598 is based on device ID */ switch (hw->device_id) { case IXGBE_DEV_ID_82598: case IXGBE_DEV_ID_82598_BX: /* Default device ID is mezzanine card KX/KX4 */ return ixgbe_media_type_backplane; case IXGBE_DEV_ID_82598AF_DUAL_PORT: case IXGBE_DEV_ID_82598AF_SINGLE_PORT: case IXGBE_DEV_ID_82598_DA_DUAL_PORT: case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM: case IXGBE_DEV_ID_82598EB_XF_LR: case IXGBE_DEV_ID_82598EB_SFP_LOM: return ixgbe_media_type_fiber; case IXGBE_DEV_ID_82598EB_CX4: case IXGBE_DEV_ID_82598_CX4_DUAL_PORT: return ixgbe_media_type_cx4; case IXGBE_DEV_ID_82598AT: case IXGBE_DEV_ID_82598AT2: return ixgbe_media_type_copper; default: return ixgbe_media_type_unknown; } } /** * ixgbe_fc_enable_82598 - Enable flow control * @hw: pointer to hardware structure * * Enable flow control according to the current settings. **/ static s32 ixgbe_fc_enable_82598(struct ixgbe_hw *hw) { u32 fctrl_reg; u32 rmcs_reg; u32 reg; u32 fcrtl, fcrth; u32 link_speed = 0; int i; bool link_up; /* Validate the water mark configuration */ if (!hw->fc.pause_time) return -EINVAL; /* Low water mark of zero causes XOFF floods */ for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && hw->fc.high_water[i]) { if (!hw->fc.low_water[i] || hw->fc.low_water[i] >= hw->fc.high_water[i]) { hw_dbg(hw, "Invalid water mark configuration\n"); return -EINVAL; } } } /* * On 82598 having Rx FC on causes resets while doing 1G * so if it's on turn it off once we know link_speed. For * more details see 82598 Specification update. */ hw->mac.ops.check_link(hw, &link_speed, &link_up, false); if (link_up && link_speed == IXGBE_LINK_SPEED_1GB_FULL) { switch (hw->fc.requested_mode) { case ixgbe_fc_full: hw->fc.requested_mode = ixgbe_fc_tx_pause; break; case ixgbe_fc_rx_pause: hw->fc.requested_mode = ixgbe_fc_none; break; default: /* no change */ break; } } /* Negotiate the fc mode to use */ hw->mac.ops.fc_autoneg(hw); /* Disable any previous flow control settings */ fctrl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL); fctrl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE); rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS); rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X); /* * The possible values of fc.current_mode are: * 0: Flow control is completely disabled * 1: Rx flow control is enabled (we can receive pause frames, * but not send pause frames). * 2: Tx flow control is enabled (we can send pause frames but * we do not support receiving pause frames). * 3: Both Rx and Tx flow control (symmetric) are enabled. * other: Invalid. */ switch (hw->fc.current_mode) { case ixgbe_fc_none: /* * Flow control is disabled by software override or autoneg. * The code below will actually disable it in the HW. */ break; case ixgbe_fc_rx_pause: /* * Rx Flow control is enabled and Tx Flow control is * disabled by software override. Since there really * isn't a way to advertise that we are capable of RX * Pause ONLY, we will advertise that we support both * symmetric and asymmetric Rx PAUSE. Later, we will * disable the adapter's ability to send PAUSE frames. */ fctrl_reg |= IXGBE_FCTRL_RFCE; break; case ixgbe_fc_tx_pause: /* * Tx Flow control is enabled, and Rx Flow control is * disabled by software override. */ rmcs_reg |= IXGBE_RMCS_TFCE_802_3X; break; case ixgbe_fc_full: /* Flow control (both Rx and Tx) is enabled by SW override. */ fctrl_reg |= IXGBE_FCTRL_RFCE; rmcs_reg |= IXGBE_RMCS_TFCE_802_3X; break; default: hw_dbg(hw, "Flow control param set incorrectly\n"); return -EIO; } /* Set 802.3x based flow control settings. */ fctrl_reg |= IXGBE_FCTRL_DPF; IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl_reg); IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg); /* Set up and enable Rx high/low water mark thresholds, enable XON. */ for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && hw->fc.high_water[i]) { fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE; fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN; IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), fcrtl); IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), fcrth); } else { IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), 0); IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), 0); } } /* Configure pause time (2 TCs per register) */ reg = hw->fc.pause_time * 0x00010001; for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++) IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); /* Configure flow control refresh threshold value */ IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2); return 0; } /** * ixgbe_start_mac_link_82598 - Configures MAC link settings * @hw: pointer to hardware structure * @autoneg_wait_to_complete: true when waiting for completion is needed * * Configures link settings based on values in the ixgbe_hw struct. * Restarts the link. Performs autonegotiation if needed. **/ static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw, bool autoneg_wait_to_complete) { u32 autoc_reg; u32 links_reg; u32 i; s32 status = 0; /* Restart link */ autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); autoc_reg |= IXGBE_AUTOC_AN_RESTART; IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); /* Only poll for autoneg to complete if specified to do so */ if (autoneg_wait_to_complete) { if ((autoc_reg & IXGBE_AUTOC_LMS_MASK) == IXGBE_AUTOC_LMS_KX4_AN || (autoc_reg & IXGBE_AUTOC_LMS_MASK) == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) { links_reg = 0; /* Just in case Autoneg time = 0 */ for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) { links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); if (links_reg & IXGBE_LINKS_KX_AN_COMP) break; msleep(100); } if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) { status = -EIO; hw_dbg(hw, "Autonegotiation did not complete.\n"); } } } /* Add delay to filter out noises during initial link setup */ msleep(50); return status; } /** * ixgbe_validate_link_ready - Function looks for phy link * @hw: pointer to hardware structure * * Function indicates success when phy link is available. If phy is not ready * within 5 seconds of MAC indicating link, the function returns error. **/ static s32 ixgbe_validate_link_ready(struct ixgbe_hw *hw) { u32 timeout; u16 an_reg; if (hw->device_id != IXGBE_DEV_ID_82598AT2) return 0; for (timeout = 0; timeout < IXGBE_VALIDATE_LINK_READY_TIMEOUT; timeout++) { hw->phy.ops.read_reg(hw, MDIO_STAT1, MDIO_MMD_AN, &an_reg); if ((an_reg & MDIO_AN_STAT1_COMPLETE) && (an_reg & MDIO_STAT1_LSTATUS)) break; msleep(100); } if (timeout == IXGBE_VALIDATE_LINK_READY_TIMEOUT) { hw_dbg(hw, "Link was indicated but link is down\n"); return -EIO; } return 0; } /** * ixgbe_check_mac_link_82598 - Get link/speed status * @hw: pointer to hardware structure * @speed: pointer to link speed * @link_up: true is link is up, false otherwise * @link_up_wait_to_complete: bool used to wait for link up or not * * Reads the links register to determine if link is up and the current speed **/ static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, ixgbe_link_speed *speed, bool *link_up, bool link_up_wait_to_complete) { u32 links_reg; u32 i; u16 link_reg, adapt_comp_reg; /* * SERDES PHY requires us to read link status from register 0xC79F. * Bit 0 set indicates link is up/ready; clear indicates link down. * 0xC00C is read to check that the XAUI lanes are active. Bit 0 * clear indicates active; set indicates inactive. */ if (hw->phy.type == ixgbe_phy_nl) { hw->phy.ops.read_reg(hw, 0xC79F, MDIO_MMD_PMAPMD, &link_reg); hw->phy.ops.read_reg(hw, 0xC79F, MDIO_MMD_PMAPMD, &link_reg); hw->phy.ops.read_reg(hw, 0xC00C, MDIO_MMD_PMAPMD, &adapt_comp_reg); if (link_up_wait_to_complete) { for (i = 0; i < IXGBE_LINK_UP_TIME; i++) { if ((link_reg & 1) && ((adapt_comp_reg & 1) == 0)) { *link_up = true; break; } else { *link_up = false; } msleep(100); hw->phy.ops.read_reg(hw, 0xC79F, MDIO_MMD_PMAPMD, &link_reg); hw->phy.ops.read_reg(hw, 0xC00C, MDIO_MMD_PMAPMD, &adapt_comp_reg); } } else { if ((link_reg & 1) && ((adapt_comp_reg & 1) == 0)) *link_up = true; else *link_up = false; } if (!*link_up) return 0; } links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); if (link_up_wait_to_complete) { for (i = 0; i < IXGBE_LINK_UP_TIME; i++) { if (links_reg & IXGBE_LINKS_UP) { *link_up = true; break; } else { *link_up = false; } msleep(100); links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); } } else { if (links_reg & IXGBE_LINKS_UP) *link_up = true; else *link_up = false; } if (links_reg & IXGBE_LINKS_SPEED) *speed = IXGBE_LINK_SPEED_10GB_FULL; else *speed = IXGBE_LINK_SPEED_1GB_FULL; if ((hw->device_id == IXGBE_DEV_ID_82598AT2) && *link_up && (ixgbe_validate_link_ready(hw) != 0)) *link_up = false; return 0; } /** * ixgbe_setup_mac_link_82598 - Set MAC link speed * @hw: pointer to hardware structure * @speed: new link speed * @autoneg_wait_to_complete: true when waiting for completion is needed * * Set the link speed in the AUTOC register and restarts link. **/ static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw, ixgbe_link_speed speed, bool autoneg_wait_to_complete) { bool autoneg = false; ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN; u32 curr_autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); u32 autoc = curr_autoc; u32 link_mode = autoc & IXGBE_AUTOC_LMS_MASK; /* Check to see if speed passed in is supported. */ ixgbe_get_link_capabilities_82598(hw, &link_capabilities, &autoneg); speed &= link_capabilities; if (speed == IXGBE_LINK_SPEED_UNKNOWN) return -EINVAL; /* Set KX4/KX support according to speed requested */ else if (link_mode == IXGBE_AUTOC_LMS_KX4_AN || link_mode == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) { autoc &= ~IXGBE_AUTOC_KX4_KX_SUPP_MASK; if (speed & IXGBE_LINK_SPEED_10GB_FULL) autoc |= IXGBE_AUTOC_KX4_SUPP; if (speed & IXGBE_LINK_SPEED_1GB_FULL) autoc |= IXGBE_AUTOC_KX_SUPP; if (autoc != curr_autoc) IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc); } /* Setup and restart the link based on the new values in * ixgbe_hw This will write the AUTOC register based on the new * stored values */ return ixgbe_start_mac_link_82598(hw, autoneg_wait_to_complete); } /** * ixgbe_setup_copper_link_82598 - Set the PHY autoneg advertised field * @hw: pointer to hardware structure * @speed: new link speed * @autoneg_wait_to_complete: true if waiting is needed to complete * * Sets the link speed in the AUTOC register in the MAC and restarts link. **/ static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw, ixgbe_link_speed speed, bool autoneg_wait_to_complete) { s32 status; /* Setup the PHY according to input speed */ status = hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait_to_complete); /* Set up MAC */ ixgbe_start_mac_link_82598(hw, autoneg_wait_to_complete); return status; } /** * ixgbe_reset_hw_82598 - Performs hardware reset * @hw: pointer to hardware structure * * Resets the hardware by resetting the transmit and receive units, masks and * clears all interrupts, performing a PHY reset, and performing a link (MAC) * reset. **/ static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw) { s32 status; s32 phy_status = 0; u32 ctrl; u32 gheccr; u32 i; u32 autoc; u8 analog_val; /* Call adapter stop to disable tx/rx and clear interrupts */ status = hw->mac.ops.stop_adapter(hw); if (status) return status; /* * Power up the Atlas Tx lanes if they are currently powered down. * Atlas Tx lanes are powered down for MAC loopback tests, but * they are not automatically restored on reset. */ hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val); if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) { /* Enable Tx Atlas so packets can be transmitted again */ hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val); analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN; hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, analog_val); hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, &analog_val); analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL; hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, analog_val); hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, &analog_val); analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL; hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, analog_val); hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, &analog_val); analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL; hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, analog_val); } /* Reset PHY */ if (hw->phy.reset_disable == false) { /* PHY ops must be identified and initialized prior to reset */ /* Init PHY and function pointers, perform SFP setup */ phy_status = hw->phy.ops.init(hw); if (phy_status == -EOPNOTSUPP) return phy_status; if (phy_status == -ENOENT) goto mac_reset_top; hw->phy.ops.reset(hw); } mac_reset_top: /* * Issue global reset to the MAC. This needs to be a SW reset. * If link reset is used, it might reset the MAC when mng is using it */ ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL) | IXGBE_CTRL_RST; IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); IXGBE_WRITE_FLUSH(hw); usleep_range(1000, 1200); /* Poll for reset bit to self-clear indicating reset is complete */ for (i = 0; i < 10; i++) { ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); if (!(ctrl & IXGBE_CTRL_RST)) break; udelay(1); } if (ctrl & IXGBE_CTRL_RST) { status = -EIO; hw_dbg(hw, "Reset polling failed to complete.\n"); } msleep(50); /* * Double resets are required for recovery from certain error * conditions. Between resets, it is necessary to stall to allow time * for any pending HW events to complete. */ if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) { hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED; goto mac_reset_top; } gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR); gheccr &= ~(BIT(21) | BIT(18) | BIT(9) | BIT(6)); IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr); /* * Store the original AUTOC value if it has not been * stored off yet. Otherwise restore the stored original * AUTOC value since the reset operation sets back to deaults. */ autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); if (hw->mac.orig_link_settings_stored == false) { hw->mac.orig_autoc = autoc; hw->mac.orig_link_settings_stored = true; } else if (autoc != hw->mac.orig_autoc) { IXGBE_WRITE_REG(hw, IXGBE_AUTOC, hw->mac.orig_autoc); } /* Store the permanent mac address */ hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr); /* * Store MAC address from RAR0, clear receive address registers, and * clear the multicast table */ hw->mac.ops.init_rx_addrs(hw); if (phy_status) status = phy_status; return status; } /** * ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address * @hw: pointer to hardware struct * @rar: receive address register index to associate with a VMDq index * @vmdq: VMDq set index **/ static s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq) { u32 rar_high; u32 rar_entries = hw->mac.num_rar_entries; /* Make sure we are using a valid rar index range */ if (rar >= rar_entries) { hw_dbg(hw, "RAR index %d is out of range.\n", rar); return -EINVAL; } rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar)); rar_high &= ~IXGBE_RAH_VIND_MASK; rar_high |= ((vmdq << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK); IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high); return 0; } /** * ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address * @hw: pointer to hardware struct * @rar: receive address register index to associate with a VMDq index * @vmdq: VMDq clear index (not used in 82598, but elsewhere) **/ static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq) { u32 rar_high; u32 rar_entries = hw->mac.num_rar_entries; /* Make sure we are using a valid rar index range */ if (rar >= rar_entries) { hw_dbg(hw, "RAR index %d is out of range.\n", rar); return -EINVAL; } rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar)); if (rar_high & IXGBE_RAH_VIND_MASK) { rar_high &= ~IXGBE_RAH_VIND_MASK; IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high); } return 0; } /** * ixgbe_set_vfta_82598 - Set VLAN filter table * @hw: pointer to hardware structure * @vlan: VLAN id to write to VLAN filter * @vind: VMDq output index that maps queue to VLAN id in VFTA * @vlan_on: boolean flag to turn on/off VLAN in VFTA * @vlvf_bypass: boolean flag - unused * * Turn on/off specified VLAN in the VLAN filter table. **/ static s32 ixgbe_set_vfta_82598(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on, bool vlvf_bypass) { u32 regindex; u32 bitindex; u32 bits; u32 vftabyte; if (vlan > 4095) return -EINVAL; /* Determine 32-bit word position in array */ regindex = (vlan >> 5) & 0x7F; /* upper seven bits */ /* Determine the location of the (VMD) queue index */ vftabyte = ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */ bitindex = (vlan & 0x7) << 2; /* lower 3 bits indicate nibble */ /* Set the nibble for VMD queue index */ bits = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex)); bits &= (~(0x0F << bitindex)); bits |= (vind << bitindex); IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex), bits); /* Determine the location of the bit for this VLAN id */ bitindex = vlan & 0x1F; /* lower five bits */ bits = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex)); if (vlan_on) /* Turn on this VLAN id */ bits |= BIT(bitindex); else /* Turn off this VLAN id */ bits &= ~BIT(bitindex); IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), bits); return 0; } /** * ixgbe_clear_vfta_82598 - Clear VLAN filter table * @hw: pointer to hardware structure * * Clears the VLAN filer table, and the VMDq index associated with the filter **/ static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw) { u32 offset; u32 vlanbyte; for (offset = 0; offset < hw->mac.vft_size; offset++) IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0); for (vlanbyte = 0; vlanbyte < 4; vlanbyte++) for (offset = 0; offset < hw->mac.vft_size; offset++) IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset), 0); return 0; } /** * ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register * @hw: pointer to hardware structure * @reg: analog register to read * @val: read value * * Performs read operation to Atlas analog register specified. **/ static s32 ixgbe_read_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 *val) { u32 atlas_ctl; IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, IXGBE_ATLASCTL_WRITE_CMD | (reg << 8)); IXGBE_WRITE_FLUSH(hw); udelay(10); atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL); *val = (u8)atlas_ctl; return 0; } /** * ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register * @hw: pointer to hardware structure * @reg: atlas register to write * @val: value to write * * Performs write operation to Atlas analog register specified. **/ static s32 ixgbe_write_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 val) { u32 atlas_ctl; atlas_ctl = (reg << 8) | val; IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl); IXGBE_WRITE_FLUSH(hw); udelay(10); return 0; } /** * ixgbe_read_i2c_phy_82598 - Reads 8 bit word over I2C interface. * @hw: pointer to hardware structure * @dev_addr: address to read from * @byte_offset: byte offset to read from dev_addr * @eeprom_data: value read * * Performs 8 byte read operation to SFP module's data over I2C interface. **/ static s32 ixgbe_read_i2c_phy_82598(struct ixgbe_hw *hw, u8 dev_addr, u8 byte_offset, u8 *eeprom_data) { s32 status = 0; u16 sfp_addr = 0; u16 sfp_data = 0; u16 sfp_stat = 0; u16 gssr; u32 i; if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) gssr = IXGBE_GSSR_PHY1_SM; else gssr = IXGBE_GSSR_PHY0_SM; if (hw->mac.ops.acquire_swfw_sync(hw, gssr) != 0) return -EBUSY; if (hw->phy.type == ixgbe_phy_nl) { /* * phy SDA/SCL registers are at addresses 0xC30A to * 0xC30D. These registers are used to talk to the SFP+ * module's EEPROM through the SDA/SCL (I2C) interface. */ sfp_addr = (dev_addr << 8) + byte_offset; sfp_addr = (sfp_addr | IXGBE_I2C_EEPROM_READ_MASK); hw->phy.ops.write_reg_mdi(hw, IXGBE_MDIO_PMA_PMD_SDA_SCL_ADDR, MDIO_MMD_PMAPMD, sfp_addr); /* Poll status */ for (i = 0; i < 100; i++) { hw->phy.ops.read_reg_mdi(hw, IXGBE_MDIO_PMA_PMD_SDA_SCL_STAT, MDIO_MMD_PMAPMD, &sfp_stat); sfp_stat = sfp_stat & IXGBE_I2C_EEPROM_STATUS_MASK; if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_IN_PROGRESS) break; usleep_range(10000, 20000); } if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_PASS) { hw_dbg(hw, "EEPROM read did not pass.\n"); status = -ENOENT; goto out; } /* Read data */ hw->phy.ops.read_reg_mdi(hw, IXGBE_MDIO_PMA_PMD_SDA_SCL_DATA, MDIO_MMD_PMAPMD, &sfp_data); *eeprom_data = (u8)(sfp_data >> 8); } else { status = -EIO; } out: hw->mac.ops.release_swfw_sync(hw, gssr); return status; } /** * ixgbe_read_i2c_eeprom_82598 - Reads 8 bit word over I2C interface. * @hw: pointer to hardware structure * @byte_offset: EEPROM byte offset to read * @eeprom_data: value read * * Performs 8 byte read operation to SFP module's EEPROM over I2C interface. **/ static s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset, u8 *eeprom_data) { return ixgbe_read_i2c_phy_82598(hw, IXGBE_I2C_EEPROM_DEV_ADDR, byte_offset, eeprom_data); } /** * ixgbe_read_i2c_sff8472_82598 - Reads 8 bit word over I2C interface. * @hw: pointer to hardware structure * @byte_offset: byte offset at address 0xA2 * @sff8472_data: value read * * Performs 8 byte read operation to SFP module's SFF-8472 data over I2C **/ static s32 ixgbe_read_i2c_sff8472_82598(struct ixgbe_hw *hw, u8 byte_offset, u8 *sff8472_data) { return ixgbe_read_i2c_phy_82598(hw, IXGBE_I2C_EEPROM_DEV_ADDR2, byte_offset, sff8472_data); } /** * ixgbe_set_lan_id_multi_port_pcie_82598 - Set LAN id for PCIe multiple * port devices. * @hw: pointer to the HW structure * * Calls common function and corrects issue with some single port devices * that enable LAN1 but not LAN0. **/ static void ixgbe_set_lan_id_multi_port_pcie_82598(struct ixgbe_hw *hw) { struct ixgbe_bus_info *bus = &hw->bus; u16 pci_gen = 0; u16 pci_ctrl2 = 0; ixgbe_set_lan_id_multi_port_pcie(hw); /* check if LAN0 is disabled */ hw->eeprom.ops.read(hw, IXGBE_PCIE_GENERAL_PTR, &pci_gen); if ((pci_gen != 0) && (pci_gen != 0xFFFF)) { hw->eeprom.ops.read(hw, pci_gen + IXGBE_PCIE_CTRL2, &pci_ctrl2); /* if LAN0 is completely disabled force function to 0 */ if ((pci_ctrl2 & IXGBE_PCIE_CTRL2_LAN_DISABLE) && !(pci_ctrl2 & IXGBE_PCIE_CTRL2_DISABLE_SELECT) && !(pci_ctrl2 & IXGBE_PCIE_CTRL2_DUMMY_ENABLE)) { bus->func = 0; } } } /** * ixgbe_set_rxpba_82598 - Initialize RX packet buffer * @hw: pointer to hardware structure * @num_pb: number of packet buffers to allocate * @headroom: reserve n KB of headroom * @strategy: packet buffer allocation strategy **/ static void ixgbe_set_rxpba_82598(struct ixgbe_hw *hw, int num_pb, u32 headroom, int strategy) { u32 rxpktsize = IXGBE_RXPBSIZE_64KB; u8 i = 0; if (!num_pb) return; /* Setup Rx packet buffer sizes */ switch (strategy) { case PBA_STRATEGY_WEIGHTED: /* Setup the first four at 80KB */ rxpktsize = IXGBE_RXPBSIZE_80KB; for (; i < 4; i++) IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); /* Setup the last four at 48KB...don't re-init i */ rxpktsize = IXGBE_RXPBSIZE_48KB; fallthrough; case PBA_STRATEGY_EQUAL: default: /* Divide the remaining Rx packet buffer evenly among the TCs */ for (; i < IXGBE_MAX_PACKET_BUFFERS; i++) IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); break; } /* Setup Tx packet buffer sizes */ for (i = 0; i < IXGBE_MAX_PACKET_BUFFERS; i++) IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), IXGBE_TXPBSIZE_40KB); } static const struct ixgbe_mac_operations mac_ops_82598 = { .init_hw = &ixgbe_init_hw_generic, .reset_hw = &ixgbe_reset_hw_82598, .start_hw = &ixgbe_start_hw_82598, .clear_hw_cntrs = &ixgbe_clear_hw_cntrs_generic, .get_media_type = &ixgbe_get_media_type_82598, .enable_rx_dma = &ixgbe_enable_rx_dma_generic, .get_mac_addr = &ixgbe_get_mac_addr_generic, .stop_adapter = &ixgbe_stop_adapter_generic, .get_bus_info = &ixgbe_get_bus_info_generic, .set_lan_id = &ixgbe_set_lan_id_multi_port_pcie_82598, .read_analog_reg8 = &ixgbe_read_analog_reg8_82598, .write_analog_reg8 = &ixgbe_write_analog_reg8_82598, .setup_link = &ixgbe_setup_mac_link_82598, .set_rxpba = &ixgbe_set_rxpba_82598, .check_link = &ixgbe_check_mac_link_82598, .get_link_capabilities = &ixgbe_get_link_capabilities_82598, .led_on = &ixgbe_led_on_generic, .led_off = &ixgbe_led_off_generic, .init_led_link_act = ixgbe_init_led_link_act_generic, .blink_led_start = &ixgbe_blink_led_start_generic, .blink_led_stop = &ixgbe_blink_led_stop_generic, .set_rar = &ixgbe_set_rar_generic, .clear_rar = &ixgbe_clear_rar_generic, .set_vmdq = &ixgbe_set_vmdq_82598, .clear_vmdq = &ixgbe_clear_vmdq_82598, .init_rx_addrs = &ixgbe_init_rx_addrs_generic, .update_mc_addr_list = &ixgbe_update_mc_addr_list_generic, .enable_mc = &ixgbe_enable_mc_generic, .disable_mc = &ixgbe_disable_mc_generic, .clear_vfta = &ixgbe_clear_vfta_82598, .set_vfta = &ixgbe_set_vfta_82598, .fc_enable = &ixgbe_fc_enable_82598, .setup_fc = ixgbe_setup_fc_generic, .fc_autoneg = ixgbe_fc_autoneg, .set_fw_drv_ver = NULL, .acquire_swfw_sync = &ixgbe_acquire_swfw_sync, .release_swfw_sync = &ixgbe_release_swfw_sync, .init_swfw_sync = NULL, .get_thermal_sensor_data = NULL, .init_thermal_sensor_thresh = NULL, .prot_autoc_read = &prot_autoc_read_generic, .prot_autoc_write = &prot_autoc_write_generic, .enable_rx = &ixgbe_enable_rx_generic, .disable_rx = &ixgbe_disable_rx_generic, }; static const struct ixgbe_eeprom_operations eeprom_ops_82598 = { .init_params = &ixgbe_init_eeprom_params_generic, .read = &ixgbe_read_eerd_generic, .write = &ixgbe_write_eeprom_generic, .write_buffer = &ixgbe_write_eeprom_buffer_bit_bang_generic, .read_buffer = &ixgbe_read_eerd_buffer_generic, .calc_checksum = &ixgbe_calc_eeprom_checksum_generic, .validate_checksum = &ixgbe_validate_eeprom_checksum_generic, .update_checksum = &ixgbe_update_eeprom_checksum_generic, }; static const struct ixgbe_phy_operations phy_ops_82598 = { .identify = &ixgbe_identify_phy_generic, .identify_sfp = &ixgbe_identify_module_generic, .init = &ixgbe_init_phy_ops_82598, .reset = &ixgbe_reset_phy_generic, .read_reg = &ixgbe_read_phy_reg_generic, .write_reg = &ixgbe_write_phy_reg_generic, .read_reg_mdi = &ixgbe_read_phy_reg_mdi, .write_reg_mdi = &ixgbe_write_phy_reg_mdi, .setup_link = &ixgbe_setup_phy_link_generic, .setup_link_speed = &ixgbe_setup_phy_link_speed_generic, .read_i2c_sff8472 = &ixgbe_read_i2c_sff8472_82598, .read_i2c_eeprom = &ixgbe_read_i2c_eeprom_82598, .check_overtemp = &ixgbe_tn_check_overtemp, }; const struct ixgbe_info ixgbe_82598_info = { .mac = ixgbe_mac_82598EB, .get_invariants = &ixgbe_get_invariants_82598, .mac_ops = &mac_ops_82598, .eeprom_ops = &eeprom_ops_82598, .phy_ops = &phy_ops_82598, .mvals = ixgbe_mvals_8259X, };