[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 3/11] common hardware functions
This shared code module controls hardware functionality that is common to all Intel 10 Gpbs Ethernet adapters. Signed-off-by: Mitch Williams <mitch.a.williams@xxxxxxxxx> diff -urpN -X dontdiff a/drivers/net/ixgbe/ixgbe_common.c b/drivers/net/ixgbe/ixgbe_common.c --- a/drivers/net/ixgbe/ixgbe_common.c 1969-12-31 16:00:00.000000000 -0800 +++ b/drivers/net/ixgbe/ixgbe_common.c 2009-01-22 11:33:59.000000000 -0800 @@ -0,0 +1,1807 @@ +/******************************************************************************* + + Intel 10 Gigabit PCI Express Linux driver + Copyright(c) 1999 - 2008 Intel Corporation. + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions of the GNU General Public License, + version 2, as published by the Free Software Foundation. + + This program is distributed in the hope it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Contact Information: + e1000-devel Mailing List <e1000-devel@xxxxxxxxxxxxxxxxxxxxx> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +*******************************************************************************/ + +#include "ixgbe_common.h" +#include "ixgbe_api.h" + +static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw); +static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw); +static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw); +static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw); +static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw); +static void ixgbe_standby_eeprom(struct ixgbe_hw *hw); +static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, + u16 count); +static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count); +static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); +static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); +static void ixgbe_release_eeprom(struct ixgbe_hw *hw); +static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw); + +static void ixgbe_enable_rar(struct ixgbe_hw *hw, u32 index); +static void ixgbe_disable_rar(struct ixgbe_hw *hw, u32 index); +static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr); +void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr); +void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq); + +/** + * ixgbe_init_ops_generic - Inits function ptrs + * @hw: pointer to the hardware structure + * + * Initialize the function pointers. + **/ +s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw) +{ + struct ixgbe_eeprom_info *eeprom = &hw->eeprom; + struct ixgbe_mac_info *mac = &hw->mac; + u32 eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + /* EEPROM */ + eeprom->ops.init_params = &ixgbe_init_eeprom_params_generic; + /* If EEPROM is valid (bit 8 = 1), use EERD otherwise use bit bang */ + if (eec & (1 << 8)) + eeprom->ops.read = &ixgbe_read_eeprom_generic; + else + eeprom->ops.read = &ixgbe_read_eeprom_bit_bang_generic; + eeprom->ops.write = &ixgbe_write_eeprom_generic; + eeprom->ops.validate_checksum = + &ixgbe_validate_eeprom_checksum_generic; + eeprom->ops.update_checksum = &ixgbe_update_eeprom_checksum_generic; + + /* MAC */ + mac->ops.init_hw = &ixgbe_init_hw_generic; + mac->ops.reset_hw = NULL; + mac->ops.start_hw = &ixgbe_start_hw_generic; + mac->ops.clear_hw_cntrs = &ixgbe_clear_hw_cntrs_generic; + mac->ops.get_media_type = NULL; + mac->ops.get_supported_physical_layer = NULL; + mac->ops.get_mac_addr = &ixgbe_get_mac_addr_generic; + mac->ops.stop_adapter = &ixgbe_stop_adapter_generic; + mac->ops.get_bus_info = &ixgbe_get_bus_info_generic; + mac->ops.set_lan_id = &ixgbe_set_lan_id_multi_port_pcie; + + /* LEDs */ + mac->ops.led_on = &ixgbe_led_on_generic; + mac->ops.led_off = &ixgbe_led_off_generic; + mac->ops.blink_led_start = NULL; + mac->ops.blink_led_stop = NULL; + + /* RAR, Multicast, VLAN */ + mac->ops.set_rar = &ixgbe_set_rar_generic; + mac->ops.clear_rar = &ixgbe_clear_rar_generic; + mac->ops.set_vmdq = NULL; + mac->ops.clear_vmdq = NULL; + mac->ops.init_rx_addrs = &ixgbe_init_rx_addrs_generic; + mac->ops.update_uc_addr_list = &ixgbe_update_uc_addr_list_generic; + mac->ops.update_mc_addr_list = &ixgbe_update_mc_addr_list_generic; + mac->ops.enable_mc = &ixgbe_enable_mc_generic; + mac->ops.disable_mc = &ixgbe_disable_mc_generic; + mac->ops.clear_vfta = NULL; + mac->ops.set_vfta = NULL; + mac->ops.init_uta_tables = NULL; + + + /* Link */ + mac->ops.get_link_capabilities = NULL; + mac->ops.setup_link = NULL; + mac->ops.setup_link_speed = NULL; + mac->ops.check_link = NULL; + + return 0; +} + +/** + * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx + * @hw: pointer to hardware structure + * + * Starts the hardware by filling the bus info structure and media type, clears + * all on chip counters, initializes receive address registers, multicast + * table, VLAN filter table, calls routine to set up link and flow control + * settings, and leaves transmit and receive units disabled and uninitialized + **/ +s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) +{ + u32 ctrl_ext; + + /* Set the media type */ + hw->phy.media_type = hw->mac.ops.get_media_type(hw); + + /* Set bus info */ + hw->mac.ops.get_bus_info(hw); + + /* Identify the PHY */ + hw->phy.ops.identify(hw); + + /* + * Store MAC address from RAR0, clear receive address registers, and + * clear the multicast table + */ + hw->mac.ops.init_rx_addrs(hw); + + /* Clear the VLAN filter table */ + hw->mac.ops.clear_vfta(hw); + + /* Set up link */ + hw->mac.ops.setup_link(hw); + + /* Clear statistics registers */ + hw->mac.ops.clear_hw_cntrs(hw); + + /* Set No Snoop Disable */ + ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); + ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS; + IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); + IXGBE_WRITE_FLUSH(hw); + + /* Clear adapter stopped flag */ + hw->adapter_stopped = false; + + return 0; +} + +/** + * ixgbe_init_hw_generic - Generic hardware initialization + * @hw: pointer to hardware structure + * + * Initialize the hardware by resetting the hardware, filling the bus info + * structure and media type, clears all on chip counters, initializes receive + * address registers, multicast table, VLAN filter table, calls routine to set + * up link and flow control settings, and leaves transmit and receive units + * disabled and uninitialized + **/ +s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw) +{ + /* Reset the hardware */ + hw->mac.ops.reset_hw(hw); + + /* Start the HW */ + hw->mac.ops.start_hw(hw); + + return 0; +} + +/** + * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters + * @hw: pointer to hardware structure + * + * Clears all hardware statistics counters by reading them from the hardware + * Statistics counters are clear on read. + **/ +s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw) +{ + u16 i = 0; + + IXGBE_READ_REG(hw, IXGBE_CRCERRS); + IXGBE_READ_REG(hw, IXGBE_ILLERRC); + IXGBE_READ_REG(hw, IXGBE_ERRBC); + IXGBE_READ_REG(hw, IXGBE_MSPDC); + for (i = 0; i < 8; i++) + IXGBE_READ_REG(hw, IXGBE_MPC(i)); + + IXGBE_READ_REG(hw, IXGBE_MLFC); + IXGBE_READ_REG(hw, IXGBE_MRFC); + IXGBE_READ_REG(hw, IXGBE_RLEC); + IXGBE_READ_REG(hw, IXGBE_LXONTXC); + IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); + IXGBE_READ_REG(hw, IXGBE_LXONRXC); + IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); + + for (i = 0; i < 8; i++) { + IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); + IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); + IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); + IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); + } + IXGBE_READ_REG(hw, IXGBE_PRC64); + IXGBE_READ_REG(hw, IXGBE_PRC127); + IXGBE_READ_REG(hw, IXGBE_PRC255); + IXGBE_READ_REG(hw, IXGBE_PRC511); + IXGBE_READ_REG(hw, IXGBE_PRC1023); + IXGBE_READ_REG(hw, IXGBE_PRC1522); + IXGBE_READ_REG(hw, IXGBE_GPRC); + IXGBE_READ_REG(hw, IXGBE_BPRC); + IXGBE_READ_REG(hw, IXGBE_MPRC); + IXGBE_READ_REG(hw, IXGBE_GPTC); + IXGBE_READ_REG(hw, IXGBE_GORCL); + IXGBE_READ_REG(hw, IXGBE_GORCH); + IXGBE_READ_REG(hw, IXGBE_GOTCL); + IXGBE_READ_REG(hw, IXGBE_GOTCH); + for (i = 0; i < 8; i++) + IXGBE_READ_REG(hw, IXGBE_RNBC(i)); + IXGBE_READ_REG(hw, IXGBE_RUC); + IXGBE_READ_REG(hw, IXGBE_RFC); + IXGBE_READ_REG(hw, IXGBE_ROC); + IXGBE_READ_REG(hw, IXGBE_RJC); + IXGBE_READ_REG(hw, IXGBE_MNGPRC); + IXGBE_READ_REG(hw, IXGBE_MNGPDC); + IXGBE_READ_REG(hw, IXGBE_MNGPTC); + IXGBE_READ_REG(hw, IXGBE_TORL); + IXGBE_READ_REG(hw, IXGBE_TORH); + IXGBE_READ_REG(hw, IXGBE_TPR); + IXGBE_READ_REG(hw, IXGBE_TPT); + IXGBE_READ_REG(hw, IXGBE_PTC64); + IXGBE_READ_REG(hw, IXGBE_PTC127); + IXGBE_READ_REG(hw, IXGBE_PTC255); + IXGBE_READ_REG(hw, IXGBE_PTC511); + IXGBE_READ_REG(hw, IXGBE_PTC1023); + IXGBE_READ_REG(hw, IXGBE_PTC1522); + IXGBE_READ_REG(hw, IXGBE_MPTC); + IXGBE_READ_REG(hw, IXGBE_BPTC); + for (i = 0; i < 16; i++) { + IXGBE_READ_REG(hw, IXGBE_QPRC(i)); + IXGBE_READ_REG(hw, IXGBE_QBRC(i)); + IXGBE_READ_REG(hw, IXGBE_QPTC(i)); + IXGBE_READ_REG(hw, IXGBE_QBTC(i)); + } + + return 0; +} + +/** + * ixgbe_read_pba_num_generic - Reads part number from EEPROM + * @hw: pointer to hardware structure + * @pba_num: stores the part number from the EEPROM + * + * Reads the part number from the EEPROM. + **/ +s32 ixgbe_read_pba_num_generic(struct ixgbe_hw *hw, u32 *pba_num) +{ + s32 ret_val; + u16 data; + + ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data); + if (ret_val) { + hw_dbg(hw, "NVM Read Error\n"); + return ret_val; + } + *pba_num = (u32)(data << 16); + + ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &data); + if (ret_val) { + hw_dbg(hw, "NVM Read Error\n"); + return ret_val; + } + *pba_num |= data; + + return 0; +} + +/** + * ixgbe_get_mac_addr_generic - Generic get MAC address + * @hw: pointer to hardware structure + * @mac_addr: Adapter MAC address + * + * Reads the adapter's MAC address from first Receive Address Register (RAR0) + * A reset of the adapter must be performed prior to calling this function + * in order for the MAC address to have been loaded from the EEPROM into RAR0 + **/ +s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr) +{ + u32 rar_high; + u32 rar_low; + u16 i; + + rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0)); + rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0)); + + for (i = 0; i < 4; i++) + mac_addr[i] = (u8)(rar_low >> (i*8)); + + for (i = 0; i < 2; i++) + mac_addr[i+4] = (u8)(rar_high >> (i*8)); + + return 0; +} + +/** + * ixgbe_get_bus_info_generic - Generic set PCI bus info + * @hw: pointer to hardware structure + * + * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure + **/ +s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw) +{ + struct ixgbe_mac_info *mac = &hw->mac; + u16 link_status; + + hw->bus.type = ixgbe_bus_type_pci_express; + + /* Get the negotiated link width and speed from PCI config space */ + link_status = IXGBE_READ_PCIE_WORD(hw, IXGBE_PCI_LINK_STATUS); + + switch (link_status & IXGBE_PCI_LINK_WIDTH) { + case IXGBE_PCI_LINK_WIDTH_1: + hw->bus.width = ixgbe_bus_width_pcie_x1; + break; + case IXGBE_PCI_LINK_WIDTH_2: + hw->bus.width = ixgbe_bus_width_pcie_x2; + break; + case IXGBE_PCI_LINK_WIDTH_4: + hw->bus.width = ixgbe_bus_width_pcie_x4; + break; + case IXGBE_PCI_LINK_WIDTH_8: + hw->bus.width = ixgbe_bus_width_pcie_x8; + break; + default: + hw->bus.width = ixgbe_bus_width_unknown; + break; + } + + switch (link_status & IXGBE_PCI_LINK_SPEED) { + case IXGBE_PCI_LINK_SPEED_2500: + hw->bus.speed = ixgbe_bus_speed_2500; + break; + case IXGBE_PCI_LINK_SPEED_5000: + hw->bus.speed = ixgbe_bus_speed_5000; + break; + default: + hw->bus.speed = ixgbe_bus_speed_unknown; + break; + } + + mac->ops.set_lan_id(hw); + + return 0; +} + +/** + * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices + * @hw: pointer to the HW structure + * + * Determines the LAN function id by reading memory-mapped registers + * and swaps the port value if requested. + **/ +void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw) +{ + struct ixgbe_bus_info *bus = &hw->bus; + u32 reg; + + reg = IXGBE_READ_REG(hw, IXGBE_STATUS); + bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT; + + /* check for a port swap */ + reg = IXGBE_READ_REG(hw, IXGBE_FACTPS); + if (reg & IXGBE_FACTPS_LFS) + bus->func ^= 0x1; +} + +/** + * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units + * @hw: pointer to hardware structure + * + * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, + * disables transmit and receive units. The adapter_stopped flag is used by + * the shared code and drivers to determine if the adapter is in a stopped + * state and should not touch the hardware. + **/ +s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw) +{ + u32 number_of_queues; + u32 reg_val; + u16 i; + + /* + * Set the adapter_stopped flag so other driver functions stop touching + * the hardware + */ + hw->adapter_stopped = true; + + /* Disable the receive unit */ + reg_val = IXGBE_READ_REG(hw, IXGBE_RXCTRL); + reg_val &= ~(IXGBE_RXCTRL_RXEN); + IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_val); + IXGBE_WRITE_FLUSH(hw); + msleep(2); + + /* Clear interrupt mask to stop from interrupts being generated */ + IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); + + /* Clear any pending interrupts */ + IXGBE_READ_REG(hw, IXGBE_EICR); + + /* Disable the transmit unit. Each queue must be disabled. */ + number_of_queues = hw->mac.max_tx_queues; + for (i = 0; i < number_of_queues; i++) { + reg_val = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); + if (reg_val & IXGBE_TXDCTL_ENABLE) { + reg_val &= ~IXGBE_TXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), reg_val); + } + } + + /* + * Prevent the PCI-E bus from from hanging by disabling PCI-E master + * access and verify no pending requests + */ + if (ixgbe_disable_pcie_master(hw) != 0) + hw_dbg(hw, "PCI-E Master disable polling has failed.\n"); + + return 0; +} + +/** + * ixgbe_led_on_generic - Turns on the software controllable LEDs. + * @hw: pointer to hardware structure + * @index: led number to turn on + **/ +s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index) +{ + u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); + + /* To turn on the LED, set mode to ON. */ + led_reg &= ~IXGBE_LED_MODE_MASK(index); + led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index); + IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); + IXGBE_WRITE_FLUSH(hw); + + return 0; +} + +/** + * ixgbe_led_off_generic - Turns off the software controllable LEDs. + * @hw: pointer to hardware structure + * @index: led number to turn off + **/ +s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index) +{ + u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); + + /* To turn off the LED, set mode to OFF. */ + led_reg &= ~IXGBE_LED_MODE_MASK(index); + led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index); + IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); + IXGBE_WRITE_FLUSH(hw); + + return 0; +} + +/** + * ixgbe_init_eeprom_params_generic - Initialize EEPROM params + * @hw: pointer to hardware structure + * + * Initializes the EEPROM parameters ixgbe_eeprom_info within the + * ixgbe_hw struct in order to set up EEPROM access. + **/ +s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw) +{ + struct ixgbe_eeprom_info *eeprom = &hw->eeprom; + u32 eec; + u16 eeprom_size; + + if (eeprom->type == ixgbe_eeprom_uninitialized) { + eeprom->type = ixgbe_eeprom_none; + /* Set default semaphore delay to 10ms which is a well + * tested value */ + eeprom->semaphore_delay = 10; + + /* + * Check for EEPROM present first. + * If not present leave as none + */ + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + if (eec & IXGBE_EEC_PRES) { + eeprom->type = ixgbe_eeprom_spi; + + /* + * SPI EEPROM is assumed here. This code would need to + * change if a future EEPROM is not SPI. + */ + eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >> + IXGBE_EEC_SIZE_SHIFT); + eeprom->word_size = 1 << (eeprom_size + + IXGBE_EEPROM_WORD_SIZE_SHIFT); + } + + if (eec & IXGBE_EEC_ADDR_SIZE) + eeprom->address_bits = 16; + else + eeprom->address_bits = 8; + hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: " + "%d\n", eeprom->type, eeprom->word_size, + eeprom->address_bits); + } + + return 0; +} + +/** + * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM + * @hw: pointer to hardware structure + * @offset: offset within the EEPROM to be written to + * @data: 16 bit word to be written to the EEPROM + * + * If ixgbe_eeprom_update_checksum is not called after this function, the + * EEPROM will most likely contain an invalid checksum. + **/ +s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data) +{ + s32 status; + u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI; + + hw->eeprom.ops.init_params(hw); + + if (offset >= hw->eeprom.word_size) { + status = IXGBE_ERR_EEPROM; + goto out; + } + + /* Prepare the EEPROM for writing */ + status = ixgbe_acquire_eeprom(hw); + + if (status == 0) { + if (ixgbe_ready_eeprom(hw) != 0) { + ixgbe_release_eeprom(hw); + status = IXGBE_ERR_EEPROM; + } + } + + if (status == 0) { + ixgbe_standby_eeprom(hw); + + /* Send the WRITE ENABLE command (8 bit opcode ) */ + ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_WREN_OPCODE_SPI, + IXGBE_EEPROM_OPCODE_BITS); + + ixgbe_standby_eeprom(hw); + + /* + * Some SPI eeproms use the 8th address bit embedded in the + * opcode + */ + if ((hw->eeprom.address_bits == 8) && (offset >= 128)) + write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; + + /* Send the Write command (8-bit opcode + addr) */ + ixgbe_shift_out_eeprom_bits(hw, write_opcode, + IXGBE_EEPROM_OPCODE_BITS); + ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2), + hw->eeprom.address_bits); + + /* Send the data */ + data = (data >> 8) | (data << 8); + ixgbe_shift_out_eeprom_bits(hw, data, 16); + ixgbe_standby_eeprom(hw); + + msleep(hw->eeprom.semaphore_delay); + /* Done with writing - release the EEPROM */ + ixgbe_release_eeprom(hw); + } + +out: + return status; +} + +/** + * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang + * @hw: pointer to hardware structure + * @offset: offset within the EEPROM to be read + * @data: read 16 bit value from EEPROM + * + * Reads 16 bit value from EEPROM through bit-bang method + **/ +s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, + u16 *data) +{ + s32 status; + u16 word_in; + u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI; + + hw->eeprom.ops.init_params(hw); + + if (offset >= hw->eeprom.word_size) { + status = IXGBE_ERR_EEPROM; + goto out; + } + + /* Prepare the EEPROM for reading */ + status = ixgbe_acquire_eeprom(hw); + + if (status == 0) { + if (ixgbe_ready_eeprom(hw) != 0) { + ixgbe_release_eeprom(hw); + status = IXGBE_ERR_EEPROM; + } + } + + if (status == 0) { + ixgbe_standby_eeprom(hw); + + /* + * Some SPI eeproms use the 8th address bit embedded in the + * opcode + */ + if ((hw->eeprom.address_bits == 8) && (offset >= 128)) + read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; + + /* Send the READ command (opcode + addr) */ + ixgbe_shift_out_eeprom_bits(hw, read_opcode, + IXGBE_EEPROM_OPCODE_BITS); + ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2), + hw->eeprom.address_bits); + + /* Read the data. */ + word_in = ixgbe_shift_in_eeprom_bits(hw, 16); + *data = (word_in >> 8) | (word_in << 8); + + /* End this read operation */ + ixgbe_release_eeprom(hw); + } + +out: + return status; +} + +/** + * ixgbe_read_eeprom_generic - Read EEPROM word using EERD + * @hw: pointer to hardware structure + * @offset: offset of word in the EEPROM to read + * @data: word read from the EEPROM + * + * Reads a 16 bit word from the EEPROM using the EERD register. + **/ +s32 ixgbe_read_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 *data) +{ + u32 eerd; + s32 status; + + hw->eeprom.ops.init_params(hw); + + if (offset >= hw->eeprom.word_size) { + status = IXGBE_ERR_EEPROM; + goto out; + } + + eerd = (offset << IXGBE_EEPROM_READ_ADDR_SHIFT) + + IXGBE_EEPROM_READ_REG_START; + + IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd); + status = ixgbe_poll_eeprom_eerd_done(hw); + + if (status == 0) + *data = (IXGBE_READ_REG(hw, IXGBE_EERD) >> + IXGBE_EEPROM_READ_REG_DATA); + else + hw_dbg(hw, "Eeprom read timed out\n"); + +out: + return status; +} + +/** + * ixgbe_poll_eeprom_eerd_done - Poll EERD status + * @hw: pointer to hardware structure + * + * Polls the status bit (bit 1) of the EERD to determine when the read is done. + **/ +static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw) +{ + u32 i; + u32 reg; + s32 status = IXGBE_ERR_EEPROM; + + for (i = 0; i < IXGBE_EERD_ATTEMPTS; i++) { + reg = IXGBE_READ_REG(hw, IXGBE_EERD); + if (reg & IXGBE_EEPROM_READ_REG_DONE) { + status = 0; + break; + } + udelay(5); + } + return status; +} + +/** + * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang + * @hw: pointer to hardware structure + * + * Prepares EEPROM for access using bit-bang method. This function should + * be called before issuing a command to the EEPROM. + **/ +static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw) +{ + s32 status = 0; + u32 eec; + u32 i; + + if (ixgbe_acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0) + status = IXGBE_ERR_SWFW_SYNC; + + if (status == 0) { + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + /* Request EEPROM Access */ + eec |= IXGBE_EEC_REQ; + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + + for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) { + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + if (eec & IXGBE_EEC_GNT) + break; + udelay(5); + } + + /* Release if grant not acquired */ + if (!(eec & IXGBE_EEC_GNT)) { + eec &= ~IXGBE_EEC_REQ; + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + hw_dbg(hw, "Could not acquire EEPROM grant\n"); + + ixgbe_release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); + status = IXGBE_ERR_EEPROM; + } + } + + /* Setup EEPROM for Read/Write */ + if (status == 0) { + /* Clear CS and SK */ + eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK); + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + IXGBE_WRITE_FLUSH(hw); + udelay(1); + } + return status; +} + +/** + * ixgbe_get_eeprom_semaphore - Get hardware semaphore + * @hw: pointer to hardware structure + * + * Sets the hardware semaphores so EEPROM access can occur for bit-bang method + **/ +static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw) +{ + s32 status = IXGBE_ERR_EEPROM; + u32 timeout; + u32 i; + u32 swsm; + + /* Set timeout value based on size of EEPROM */ + timeout = hw->eeprom.word_size + 1; + + /* Get SMBI software semaphore between device drivers first */ + for (i = 0; i < timeout; i++) { + /* + * If the SMBI bit is 0 when we read it, then the bit will be + * set and we have the semaphore + */ + swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); + if (!(swsm & IXGBE_SWSM_SMBI)) { + status = 0; + break; + } + msleep(1); + } + + /* Now get the semaphore between SW/FW through the SWESMBI bit */ + if (status == 0) { + for (i = 0; i < timeout; i++) { + swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); + + /* Set the SW EEPROM semaphore bit to request access */ + swsm |= IXGBE_SWSM_SWESMBI; + IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); + + /* + * If we set the bit successfully then we got the + * semaphore. + */ + swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); + if (swsm & IXGBE_SWSM_SWESMBI) + break; + + udelay(50); + } + + /* + * Release semaphores and return error if SW EEPROM semaphore + * was not granted because we don't have access to the EEPROM + */ + if (i >= timeout) { + hw_dbg(hw, "Driver can't access the Eeprom - Semaphore " + "not granted.\n"); + ixgbe_release_eeprom_semaphore(hw); + status = IXGBE_ERR_EEPROM; + } + } + + return status; +} + +/** + * ixgbe_release_eeprom_semaphore - Release hardware semaphore + * @hw: pointer to hardware structure + * + * This function clears hardware semaphore bits. + **/ +static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw) +{ + u32 swsm; + + swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); + + /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */ + swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI); + IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); + IXGBE_WRITE_FLUSH(hw); +} + +/** + * ixgbe_ready_eeprom - Polls for EEPROM ready + * @hw: pointer to hardware structure + **/ +static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw) +{ + s32 status = 0; + u16 i; + u8 spi_stat_reg; + + /* + * Read "Status Register" repeatedly until the LSB is cleared. The + * EEPROM will signal that the command has been completed by clearing + * bit 0 of the internal status register. If it's not cleared within + * 5 milliseconds, then error out. + */ + for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) { + ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI, + IXGBE_EEPROM_OPCODE_BITS); + spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8); + if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI)) + break; + + udelay(5); + ixgbe_standby_eeprom(hw); + }; + + /* + * On some parts, SPI write time could vary from 0-20mSec on 3.3V + * devices (and only 0-5mSec on 5V devices) + */ + if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) { + hw_dbg(hw, "SPI EEPROM Status error\n"); + status = IXGBE_ERR_EEPROM; + } + + return status; +} + +/** + * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state + * @hw: pointer to hardware structure + **/ +static void ixgbe_standby_eeprom(struct ixgbe_hw *hw) +{ + u32 eec; + + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + /* Toggle CS to flush commands */ + eec |= IXGBE_EEC_CS; + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + IXGBE_WRITE_FLUSH(hw); + udelay(1); + eec &= ~IXGBE_EEC_CS; + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + IXGBE_WRITE_FLUSH(hw); + udelay(1); +} + +/** + * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM. + * @hw: pointer to hardware structure + * @data: data to send to the EEPROM + * @count: number of bits to shift out + **/ +static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, + u16 count) +{ + u32 eec; + u32 mask; + u32 i; + + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + /* + * Mask is used to shift "count" bits of "data" out to the EEPROM + * one bit at a time. Determine the starting bit based on count + */ + mask = 0x01 << (count - 1); + + for (i = 0; i < count; i++) { + /* + * A "1" is shifted out to the EEPROM by setting bit "DI" to a + * "1", and then raising and then lowering the clock (the SK + * bit controls the clock input to the EEPROM). A "0" is + * shifted out to the EEPROM by setting "DI" to "0" and then + * raising and then lowering the clock. + */ + if (data & mask) + eec |= IXGBE_EEC_DI; + else + eec &= ~IXGBE_EEC_DI; + + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + IXGBE_WRITE_FLUSH(hw); + + udelay(1); + + ixgbe_raise_eeprom_clk(hw, &eec); + ixgbe_lower_eeprom_clk(hw, &eec); + + /* + * Shift mask to signify next bit of data to shift in to the + * EEPROM + */ + mask = mask >> 1; + }; + + /* We leave the "DI" bit set to "0" when we leave this routine. */ + eec &= ~IXGBE_EEC_DI; + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + IXGBE_WRITE_FLUSH(hw); +} + +/** + * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM + * @hw: pointer to hardware structure + **/ +static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count) +{ + u32 eec; + u32 i; + u16 data = 0; + + /* + * In order to read a register from the EEPROM, we need to shift + * 'count' bits in from the EEPROM. Bits are "shifted in" by raising + * the clock input to the EEPROM (setting the SK bit), and then reading + * the value of the "DO" bit. During this "shifting in" process the + * "DI" bit should always be clear. + */ + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI); + + for (i = 0; i < count; i++) { + data = data << 1; + ixgbe_raise_eeprom_clk(hw, &eec); + + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + eec &= ~(IXGBE_EEC_DI); + if (eec & IXGBE_EEC_DO) + data |= 1; + + ixgbe_lower_eeprom_clk(hw, &eec); + } + + return data; +} + +/** + * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input. + * @hw: pointer to hardware structure + * @eec: EEC register's current value + **/ +static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) +{ + /* + * Raise the clock input to the EEPROM + * (setting the SK bit), then delay + */ + *eec = *eec | IXGBE_EEC_SK; + IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); + IXGBE_WRITE_FLUSH(hw); + udelay(1); +} + +/** + * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input. + * @hw: pointer to hardware structure + * @eecd: EECD's current value + **/ +static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) +{ + /* + * Lower the clock input to the EEPROM (clearing the SK bit), then + * delay + */ + *eec = *eec & ~IXGBE_EEC_SK; + IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); + IXGBE_WRITE_FLUSH(hw); + udelay(1); +} + +/** + * ixgbe_release_eeprom - Release EEPROM, release semaphores + * @hw: pointer to hardware structure + **/ +static void ixgbe_release_eeprom(struct ixgbe_hw *hw) +{ + u32 eec; + + eec = IXGBE_READ_REG(hw, IXGBE_EEC); + + eec |= IXGBE_EEC_CS; /* Pull CS high */ + eec &= ~IXGBE_EEC_SK; /* Lower SCK */ + + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + IXGBE_WRITE_FLUSH(hw); + + udelay(1); + + /* Stop requesting EEPROM access */ + eec &= ~IXGBE_EEC_REQ; + IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); + + ixgbe_release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); +} + +/** + * ixgbe_calc_eeprom_checksum - Calculates and returns the checksum + * @hw: pointer to hardware structure + **/ +static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw) +{ + u16 i; + u16 j; + u16 checksum = 0; + u16 length = 0; + u16 pointer = 0; + u16 word = 0; + + /* Include 0x0-0x3F in the checksum */ + for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { + if (hw->eeprom.ops.read(hw, i, &word) != 0) { + hw_dbg(hw, "EEPROM read failed\n"); + break; + } + checksum += word; + } + + /* Include all data from pointers except for the fw pointer */ + for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) { + hw->eeprom.ops.read(hw, i, &pointer); + + /* Make sure the pointer seems valid */ + if (pointer != 0xFFFF && pointer != 0) { + hw->eeprom.ops.read(hw, pointer, &length); + + if (length != 0xFFFF && length != 0) { + for (j = pointer+1; j <= pointer+length; j++) { + hw->eeprom.ops.read(hw, j, &word); + checksum += word; + } + } + } + } + + checksum = (u16)IXGBE_EEPROM_SUM - checksum; + + return checksum; +} + +/** + * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum + * @hw: pointer to hardware structure + * @checksum_val: calculated checksum + * + * Performs checksum calculation and validates the EEPROM checksum. If the + * caller does not need checksum_val, the value can be NULL. + **/ +s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw, + u16 *checksum_val) +{ + s32 status; + u16 checksum; + u16 read_checksum = 0; + + /* + * Read the first word from the EEPROM. If this times out or fails, do + * not continue or we could be in for a very long wait while every + * EEPROM read fails + */ + status = hw->eeprom.ops.read(hw, 0, &checksum); + + if (status == 0) { + checksum = ixgbe_calc_eeprom_checksum(hw); + + hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum); + + /* + * Verify read checksum from EEPROM is the same as + * calculated checksum + */ + if (read_checksum != checksum) + status = IXGBE_ERR_EEPROM_CHECKSUM; + + /* If the user cares, return the calculated checksum */ + if (checksum_val) + *checksum_val = checksum; + } else { + hw_dbg(hw, "EEPROM read failed\n"); + } + + return status; +} + +/** + * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum + * @hw: pointer to hardware structure + **/ +s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw) +{ + s32 status; + u16 checksum; + + /* + * Read the first word from the EEPROM. If this times out or fails, do + * not continue or we could be in for a very long wait while every + * EEPROM read fails + */ + status = hw->eeprom.ops.read(hw, 0, &checksum); + + if (status == 0) { + checksum = ixgbe_calc_eeprom_checksum(hw); + status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, + checksum); + } else { + hw_dbg(hw, "EEPROM read failed\n"); + } + + return status; +} + +/** + * ixgbe_validate_mac_addr - Validate MAC address + * @mac_addr: pointer to MAC address. + * + * Tests a MAC address to ensure it is a valid Individual Address + **/ +s32 ixgbe_validate_mac_addr(u8 *mac_addr) +{ + s32 status = 0; + + /* Make sure it is not a multicast address */ + if (IXGBE_IS_MULTICAST(mac_addr)) { + hw_dbg(hw, "MAC address is multicast\n"); + status = IXGBE_ERR_INVALID_MAC_ADDR; + /* Not a broadcast address */ + } else if (IXGBE_IS_BROADCAST(mac_addr)) { + hw_dbg(hw, "MAC address is broadcast\n"); + status = IXGBE_ERR_INVALID_MAC_ADDR; + /* Reject the zero address */ + } else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 && + mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0) { + hw_dbg(hw, "MAC address is all zeros\n"); + status = IXGBE_ERR_INVALID_MAC_ADDR; + } + return status; +} + +/** + * ixgbe_set_rar_generic - Set Rx address register + * @hw: pointer to hardware structure + * @index: Receive address register to write + * @addr: Address to put into receive address register + * @vmdq: VMDq "set" or "pool" index + * @enable_addr: set flag that address is active + * + * Puts an ethernet address into a receive address register. + **/ +s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq, + u32 enable_addr) +{ + u32 rar_low, rar_high; + u32 rar_entries = hw->mac.num_rar_entries; + + /* setup VMDq pool selection before this RAR gets enabled */ + hw->mac.ops.set_vmdq(hw, index, vmdq); + + /* Make sure we are using a valid rar index range */ + if (index < rar_entries) { + /* + * HW expects these in little endian so we reverse the byte + * order from network order (big endian) to little endian + */ + rar_low = ((u32)addr[0] | + ((u32)addr[1] << 8) | + ((u32)addr[2] << 16) | + ((u32)addr[3] << 24)); + /* + * Some parts put the VMDq setting in the extra RAH bits, + * so save everything except the lower 16 bits that hold part + * of the address and the address valid bit. + */ + rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); + rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); + rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8)); + + if (enable_addr != 0) + rar_high |= IXGBE_RAH_AV; + + IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low); + IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); + } else { + hw_dbg(hw, "RAR index %d is out of range.\n", index); + } + + return 0; +} + +/** + * ixgbe_clear_rar_generic - Remove Rx address register + * @hw: pointer to hardware structure + * @index: Receive address register to write + * + * Clears an ethernet address from a receive address register. + **/ +s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index) +{ + u32 rar_high; + u32 rar_entries = hw->mac.num_rar_entries; + + /* Make sure we are using a valid rar index range */ + if (index < rar_entries) { + /* + * Some parts put the VMDq setting in the extra RAH bits, + * so save everything except the lower 16 bits that hold part + * of the address and the address valid bit. + */ + rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); + rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); + + IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0); + IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); + } else { + hw_dbg(hw, "RAR index %d is out of range.\n", index); + } + + /* clear VMDq pool/queue selection for this RAR */ + hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL); + + return 0; +} + +/** + * ixgbe_enable_rar - Enable Rx address register + * @hw: pointer to hardware structure + * @index: index into the RAR table + * + * Enables the select receive address register. + **/ +static void ixgbe_enable_rar(struct ixgbe_hw *hw, u32 index) +{ + u32 rar_high; + + rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); + rar_high |= IXGBE_RAH_AV; + IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); +} + +/** + * ixgbe_disable_rar - Disable Rx address register + * @hw: pointer to hardware structure + * @index: index into the RAR table + * + * Disables the select receive address register. + **/ +static void ixgbe_disable_rar(struct ixgbe_hw *hw, u32 index) +{ + u32 rar_high; + + rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); + rar_high &= (~IXGBE_RAH_AV); + IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); +} + +/** + * ixgbe_init_rx_addrs_generic - Initializes receive address filters. + * @hw: pointer to hardware structure + * + * Places the MAC address in receive address register 0 and clears the rest + * of the receive address registers. Clears the multicast table. Assumes + * the receiver is in reset when the routine is called. + **/ +s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw) +{ + u32 i; + u32 rar_entries = hw->mac.num_rar_entries; + + /* + * If the current mac address is valid, assume it is a software override + * to the permanent address. + * Otherwise, use the permanent address from the eeprom. + */ + if (ixgbe_validate_mac_addr(hw->mac.addr) == + IXGBE_ERR_INVALID_MAC_ADDR) { + /* Get the MAC address from the RAR0 for later reference */ + hw->mac.ops.get_mac_addr(hw, hw->mac.addr); + + hw_dbg(hw, " Keeping Current RAR0 Addr =%.2X %.2X %.2X ", + hw->mac.addr[0], hw->mac.addr[1], + hw->mac.addr[2]); + hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3], + hw->mac.addr[4], hw->mac.addr[5]); + } else { + /* Setup the receive address. */ + hw_dbg(hw, "Overriding MAC Address in RAR[0]\n"); + hw_dbg(hw, " New MAC Addr =%.2X %.2X %.2X ", + hw->mac.addr[0], hw->mac.addr[1], + hw->mac.addr[2]); + hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3], + hw->mac.addr[4], hw->mac.addr[5]); + + hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); + } + hw->addr_ctrl.overflow_promisc = 0; + + hw->addr_ctrl.rar_used_count = 1; + + /* Zero out the other receive addresses. */ + hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1); + for (i = 1; i < rar_entries; i++) { + IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); + IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); + } + + /* Clear the MTA */ + hw->addr_ctrl.mc_addr_in_rar_count = 0; + hw->addr_ctrl.mta_in_use = 0; + IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); + + hw_dbg(hw, " Clearing MTA\n"); + for (i = 0; i < hw->mac.mcft_size; i++) + IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0); + + ixgbe_init_uta_tables(hw); + + return 0; +} + +/** + * ixgbe_add_uc_addr - Adds a secondary unicast address. + * @hw: pointer to hardware structure + * @addr: new address + * + * Adds it to unused receive address register or goes into promiscuous mode. + **/ +void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq) +{ + u32 rar_entries = hw->mac.num_rar_entries; + u32 rar; + + hw_dbg(hw, " UC Addr = %.2X %.2X %.2X %.2X %.2X %.2X\n", + addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); + + /* + * Place this address in the RAR if there is room, + * else put the controller into promiscuous mode + */ + if (hw->addr_ctrl.rar_used_count < rar_entries) { + rar = hw->addr_ctrl.rar_used_count - + hw->addr_ctrl.mc_addr_in_rar_count; + hw->mac.ops.set_rar(hw, rar, addr, vmdq, IXGBE_RAH_AV); + hw_dbg(hw, "Added a secondary address to RAR[%d]\n", rar); + hw->addr_ctrl.rar_used_count++; + } else { + hw->addr_ctrl.overflow_promisc++; + } + + hw_dbg(hw, "ixgbe_add_uc_addr Complete\n"); +} + +/** + * ixgbe_update_uc_addr_list_generic - Updates MAC list of secondary addresses + * @hw: pointer to hardware structure + * @addr_list: the list of new addresses + * @addr_count: number of addresses + * @next: iterator function to walk the address list + * + * The given list replaces any existing list. Clears the secondary addrs from + * receive address registers. Uses unused receive address registers for the + * first secondary addresses, and falls back to promiscuous mode as needed. + * + * Drivers using secondary unicast addresses must set user_set_promisc when + * manually putting the device into promiscuous mode. + **/ +s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list, + u32 addr_count, ixgbe_mc_addr_itr next) +{ + u8 *addr; + u32 i; + u32 old_promisc_setting = hw->addr_ctrl.overflow_promisc; + u32 uc_addr_in_use; + u32 fctrl; + u32 vmdq; + + /* + * Clear accounting of old secondary address list, + * don't count RAR[0] + */ + uc_addr_in_use = hw->addr_ctrl.rar_used_count - + hw->addr_ctrl.mc_addr_in_rar_count - 1; + hw->addr_ctrl.rar_used_count -= uc_addr_in_use; + hw->addr_ctrl.overflow_promisc = 0; + + /* Zero out the other receive addresses */ + hw_dbg(hw, "Clearing RAR[1-%d]\n", uc_addr_in_use); + for (i = 1; i <= uc_addr_in_use; i++) { + IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); + IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); + } + + /* Add the new addresses */ + for (i = 0; i < addr_count; i++) { + hw_dbg(hw, " Adding the secondary addresses:\n"); + addr = next(hw, &addr_list, &vmdq); + ixgbe_add_uc_addr(hw, addr, vmdq); + } + + if (hw->addr_ctrl.overflow_promisc) { + /* enable promisc if not already in overflow or set by user */ + if (!old_promisc_setting && !hw->addr_ctrl.user_set_promisc) { + hw_dbg(hw, " Entering address overflow promisc mode\n"); + fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); + fctrl |= IXGBE_FCTRL_UPE; + IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); + } + } else { + /* only disable if set by overflow, not by user */ + if (old_promisc_setting && !hw->addr_ctrl.user_set_promisc) { + hw_dbg(hw, " Leaving address overflow promisc mode\n"); + fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); + fctrl &= ~IXGBE_FCTRL_UPE; + IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); + } + } + + hw_dbg(hw, "ixgbe_update_uc_addr_list_generic Complete\n"); + return 0; +} + +/** + * ixgbe_mta_vector - Determines bit-vector in multicast table to set + * @hw: pointer to hardware structure + * @mc_addr: the multicast address + * + * Extracts the 12 bits, from a multicast address, to determine which + * bit-vector to set in the multicast table. The hardware uses 12 bits, from + * incoming rx multicast addresses, to determine the bit-vector to check in + * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set + * by the MO field of the MCSTCTRL. The MO field is set during initialization + * to mc_filter_type. + **/ +static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) +{ + u32 vector = 0; + + switch (hw->mac.mc_filter_type) { + case 0: /* use bits [47:36] of the address */ + vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); + break; + case 1: /* use bits [46:35] of the address */ + vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); + break; + case 2: /* use bits [45:34] of the address */ + vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); + break; + case 3: /* use bits [43:32] of the address */ + vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); + break; + default: /* Invalid mc_filter_type */ + hw_dbg(hw, "MC filter type param set incorrectly\n"); + break; + } + + /* vector can only be 12-bits or boundary will be exceeded */ + vector &= 0xFFF; + return vector; +} + +/** + * ixgbe_set_mta - Set bit-vector in multicast table + * @hw: pointer to hardware structure + * @hash_value: Multicast address hash value + * + * Sets the bit-vector in the multicast table. + **/ +void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr) +{ + u32 vector; + u32 vector_bit; + u32 vector_reg; + u32 mta_reg; + + hw->addr_ctrl.mta_in_use++; + + vector = ixgbe_mta_vector(hw, mc_addr); + hw_dbg(hw, " bit-vector = 0x%03X\n", vector); + + /* + * The MTA is a register array of 128 32-bit registers. It is treated + * like an array of 4096 bits. We want to set bit + * BitArray[vector_value]. So we figure out what register the bit is + * in, read it, OR in the new bit, then write back the new value. The + * register is determined by the upper 7 bits of the vector value and + * the bit within that register are determined by the lower 5 bits of + * the value. + */ + vector_reg = (vector >> 5) & 0x7F; + vector_bit = vector & 0x1F; + mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); + mta_reg |= (1 << vector_bit); + IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); +} + +/** + * ixgbe_add_mc_addr - Adds a multicast address. + * @hw: pointer to hardware structure + * @mc_addr: new multicast address + * + * Adds it to unused receive address register or to the multicast table. + **/ +void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr) +{ + u32 rar_entries = hw->mac.num_rar_entries; + u32 rar; + + hw_dbg(hw, " MC Addr =%.2X %.2X %.2X %.2X %.2X %.2X\n", + mc_addr[0], mc_addr[1], mc_addr[2], + mc_addr[3], mc_addr[4], mc_addr[5]); + + /* + * Place this multicast address in the RAR if there is room, + * else put it in the MTA + */ + if (hw->addr_ctrl.rar_used_count < rar_entries) { + /* use RAR from the end up for multicast */ + rar = rar_entries - hw->addr_ctrl.mc_addr_in_rar_count - 1; + hw->mac.ops.set_rar(hw, rar, mc_addr, 0, IXGBE_RAH_AV); + hw_dbg(hw, "Added a multicast address to RAR[%d]\n", rar); + hw->addr_ctrl.rar_used_count++; + hw->addr_ctrl.mc_addr_in_rar_count++; + } else { + ixgbe_set_mta(hw, mc_addr); + } + + hw_dbg(hw, "ixgbe_add_mc_addr Complete\n"); +} + +/** + * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses + * @hw: pointer to hardware structure + * @mc_addr_list: the list of new multicast addresses + * @mc_addr_count: number of addresses + * @next: iterator function to walk the multicast address list + * + * The given list replaces any existing list. Clears the MC addrs from receive + * address registers and the multicast table. Uses unused receive address + * registers for the first multicast addresses, and hashes the rest into the + * multicast table. + **/ +s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, u8 *mc_addr_list, + u32 mc_addr_count, ixgbe_mc_addr_itr next) +{ + u32 i; + u32 rar_entries = hw->mac.num_rar_entries; + u32 vmdq; + + /* + * Set the new number of MC addresses that we are being requested to + * use. + */ + hw->addr_ctrl.num_mc_addrs = mc_addr_count; + hw->addr_ctrl.rar_used_count -= hw->addr_ctrl.mc_addr_in_rar_count; + hw->addr_ctrl.mc_addr_in_rar_count = 0; + hw->addr_ctrl.mta_in_use = 0; + + /* Zero out the other receive addresses. */ + hw_dbg(hw, "Clearing RAR[%d-%d]\n", hw->addr_ctrl.rar_used_count, + rar_entries - 1); + for (i = hw->addr_ctrl.rar_used_count; i < rar_entries; i++) { + IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); + IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); + } + + /* Clear the MTA */ + hw_dbg(hw, " Clearing MTA\n"); + for (i = 0; i < hw->mac.mcft_size; i++) + IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0); + + /* Add the new addresses */ + for (i = 0; i < mc_addr_count; i++) { + hw_dbg(hw, " Adding the multicast addresses:\n"); + ixgbe_add_mc_addr(hw, next(hw, &mc_addr_list, &vmdq)); + } + + /* Enable mta */ + if (hw->addr_ctrl.mta_in_use > 0) + IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, + IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type); + + hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n"); + return 0; +} + +/** + * ixgbe_enable_mc_generic - Enable multicast address in RAR + * @hw: pointer to hardware structure + * + * Enables multicast address in RAR and the use of the multicast hash table. + **/ +s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw) +{ + u32 i; + u32 rar_entries = hw->mac.num_rar_entries; + struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; + + if (a->mc_addr_in_rar_count > 0) + for (i = (rar_entries - a->mc_addr_in_rar_count); + i < rar_entries; i++) + ixgbe_enable_rar(hw, i); + + if (a->mta_in_use > 0) + IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE | + hw->mac.mc_filter_type); + + return 0; +} + +/** + * ixgbe_disable_mc_generic - Disable multicast address in RAR + * @hw: pointer to hardware structure + * + * Disables multicast address in RAR and the use of the multicast hash table. + **/ +s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw) +{ + u32 i; + u32 rar_entries = hw->mac.num_rar_entries; + struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; + + if (a->mc_addr_in_rar_count > 0) + for (i = (rar_entries - a->mc_addr_in_rar_count); + i < rar_entries; i++) + ixgbe_disable_rar(hw, i); + + if (a->mta_in_use > 0) + IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); + + return 0; +} + + + + +/** + * ixgbe_disable_pcie_master - Disable PCI-express master access + * @hw: pointer to hardware structure + * + * Disables PCI-Express master access and verifies there are no pending + * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable + * bit hasn't caused the master requests to be disabled, else 0 + * is returned signifying master requests disabled. + **/ +s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw) +{ + u32 i; + u32 reg_val; + u32 number_of_queues; + s32 status = IXGBE_ERR_MASTER_REQUESTS_PENDING; + + /* Disable the receive unit by stopping each queue */ + number_of_queues = hw->mac.max_rx_queues; + for (i = 0; i < number_of_queues; i++) { + reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); + if (reg_val & IXGBE_RXDCTL_ENABLE) { + reg_val &= ~IXGBE_RXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val); + } + } + + reg_val = IXGBE_READ_REG(hw, IXGBE_CTRL); + reg_val |= IXGBE_CTRL_GIO_DIS; + IXGBE_WRITE_REG(hw, IXGBE_CTRL, reg_val); + + for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { + if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) { + status = 0; + break; + } + udelay(100); + } + + return status; +} + + +/** + * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore + * @hw: pointer to hardware structure + * @mask: Mask to specify which semaphore to acquire + * + * Acquires the SWFW semaphore thought the GSSR register for the specified + * function (CSR, PHY0, PHY1, EEPROM, Flash) + **/ +s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask) +{ + u32 gssr; + u32 swmask = mask; + u32 fwmask = mask << 5; + s32 timeout = 200; + + while (timeout) { + if (ixgbe_get_eeprom_semaphore(hw)) + return -IXGBE_ERR_SWFW_SYNC; + + gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); + if (!(gssr & (fwmask | swmask))) + break; + + /* + * Firmware currently using resource (fwmask) or other software + * thread currently using resource (swmask) + */ + ixgbe_release_eeprom_semaphore(hw); + msleep(5); + timeout--; + } + + if (!timeout) { + hw_dbg(hw, "Driver can't access resource, GSSR timeout.\n"); + return -IXGBE_ERR_SWFW_SYNC; + } + + gssr |= swmask; + IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); + + ixgbe_release_eeprom_semaphore(hw); + return 0; +} + +/** + * ixgbe_release_swfw_sync - Release SWFW semaphore + * @hw: pointer to hardware structure + * @mask: Mask to specify which semaphore to release + * + * Releases the SWFW semaphore thought the GSSR register for the specified + * function (CSR, PHY0, PHY1, EEPROM, Flash) + **/ +void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask) +{ + u32 gssr; + u32 swmask = mask; + + ixgbe_get_eeprom_semaphore(hw); + + gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); + gssr &= ~swmask; + IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); + + ixgbe_release_eeprom_semaphore(hw); +} + diff -urpN -X dontdiff a/drivers/net/ixgbe/ixgbe_common.h b/drivers/net/ixgbe/ixgbe_common.h --- a/drivers/net/ixgbe/ixgbe_common.h 1969-12-31 16:00:00.000000000 -0800 +++ b/drivers/net/ixgbe/ixgbe_common.h 2009-01-22 11:33:59.000000000 -0800 @@ -0,0 +1,77 @@ +/******************************************************************************* + + Intel 10 Gigabit PCI Express Linux driver + Copyright(c) 1999 - 2008 Intel Corporation. + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions of the GNU General Public License, + version 2, as published by the Free Software Foundation. + + This program is distributed in the hope it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Contact Information: + e1000-devel Mailing List <e1000-devel@xxxxxxxxxxxxxxxxxxxxx> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +*******************************************************************************/ + +#ifndef _IXGBE_COMMON_H_ +#define _IXGBE_COMMON_H_ + +#include "ixgbe_type.h" + +s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw); +s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw); +s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw); +s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw); +s32 ixgbe_read_pba_num_generic(struct ixgbe_hw *hw, u32 *pba_num); +s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr); +s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw); +void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw); +s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw); + +s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index); +s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index); + +s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw); +s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data); +s32 ixgbe_read_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 *data); +s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, + u16 *data); +s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw, + u16 *checksum_val); +s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw); + +s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq, + u32 enable_addr); +s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index); +s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw); +s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, u8 *mc_addr_list, + u32 mc_addr_count, + ixgbe_mc_addr_itr func); +s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list, + u32 addr_count, ixgbe_mc_addr_itr func); +s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw); +s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw); + +s32 ixgbe_setup_fc_generic(struct ixgbe_hw *hw, s32 packetbuf_num); +s32 ixgbe_fc_enable(struct ixgbe_hw *hw, s32 packtetbuf_num); + +s32 ixgbe_validate_mac_addr(u8 *mac_addr); +s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask); +void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask); +s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw); + +s32 ixgbe_read_analog_reg8_generic(struct ixgbe_hw *hw, u32 reg, u8 *val); +s32 ixgbe_write_analog_reg8_generic(struct ixgbe_hw *hw, u32 reg, u8 val); +#endif /* IXGBE_COMMON */ _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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