+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*******************************************************************************
-
- Intel(R) Gigabit Ethernet Linux driver
- Copyright(c) 2007-2013 Intel Corporation.
-
- Contact Information:
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-#include "e1000_api.h"
-
-/**
- * e1000_calculate_checksum - Calculate checksum for buffer
- * @buffer: pointer to EEPROM
- * @length: size of EEPROM to calculate a checksum for
- *
- * Calculates the checksum for some buffer on a specified length. The
- * checksum calculated is returned.
- **/
-u8 e1000_calculate_checksum(u8 *buffer, u32 length)
-{
- u32 i;
- u8 sum = 0;
-
- DEBUGFUNC("e1000_calculate_checksum");
-
- if (!buffer)
- return 0;
-
- for (i = 0; i < length; i++)
- sum += buffer[i];
-
- return (u8) (0 - sum);
-}
-
-/**
- * e1000_mng_enable_host_if_generic - Checks host interface is enabled
- * @hw: pointer to the HW structure
- *
- * Returns E1000_success upon success, else E1000_ERR_HOST_INTERFACE_COMMAND
- *
- * This function checks whether the HOST IF is enabled for command operation
- * and also checks whether the previous command is completed. It busy waits
- * in case of previous command is not completed.
- **/
-s32 e1000_mng_enable_host_if_generic(struct e1000_hw *hw)
-{
- u32 hicr;
- u8 i;
-
- DEBUGFUNC("e1000_mng_enable_host_if_generic");
-
- if (!hw->mac.arc_subsystem_valid) {
- DEBUGOUT("ARC subsystem not valid.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- /* Check that the host interface is enabled. */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if (!(hicr & E1000_HICR_EN)) {
- DEBUGOUT("E1000_HOST_EN bit disabled.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
- /* check the previous command is completed */
- for (i = 0; i < E1000_MNG_DHCP_COMMAND_TIMEOUT; i++) {
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if (!(hicr & E1000_HICR_C))
- break;
- msec_delay_irq(1);
- }
-
- if (i == E1000_MNG_DHCP_COMMAND_TIMEOUT) {
- DEBUGOUT("Previous command timeout failed .\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- return E1000_SUCCESS;
-}
-
-/**
- * e1000_check_mng_mode_generic - Generic check management mode
- * @hw: pointer to the HW structure
- *
- * Reads the firmware semaphore register and returns true (>0) if
- * manageability is enabled, else false (0).
- **/
-bool e1000_check_mng_mode_generic(struct e1000_hw *hw)
-{
- u32 fwsm = E1000_READ_REG(hw, E1000_FWSM);
-
- DEBUGFUNC("e1000_check_mng_mode_generic");
-
-
- return (fwsm & E1000_FWSM_MODE_MASK) ==
- (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT);
-}
-
-/**
- * e1000_enable_tx_pkt_filtering_generic - Enable packet filtering on Tx
- * @hw: pointer to the HW structure
- *
- * Enables packet filtering on transmit packets if manageability is enabled
- * and host interface is enabled.
- **/
-bool e1000_enable_tx_pkt_filtering_generic(struct e1000_hw *hw)
-{
- struct e1000_host_mng_dhcp_cookie *hdr = &hw->mng_cookie;
- u32 *buffer = (u32 *)&hw->mng_cookie;
- u32 offset;
- s32 ret_val, hdr_csum, csum;
- u8 i, len;
-
- DEBUGFUNC("e1000_enable_tx_pkt_filtering_generic");
-
- hw->mac.tx_pkt_filtering = true;
-
- /* No manageability, no filtering */
- if (!hw->mac.ops.check_mng_mode(hw)) {
- hw->mac.tx_pkt_filtering = false;
- return hw->mac.tx_pkt_filtering;
- }
-
- /* If we can't read from the host interface for whatever
- * reason, disable filtering.
- */
- ret_val = e1000_mng_enable_host_if_generic(hw);
- if (ret_val != E1000_SUCCESS) {
- hw->mac.tx_pkt_filtering = false;
- return hw->mac.tx_pkt_filtering;
- }
-
- /* Read in the header. Length and offset are in dwords. */
- len = E1000_MNG_DHCP_COOKIE_LENGTH >> 2;
- offset = E1000_MNG_DHCP_COOKIE_OFFSET >> 2;
- for (i = 0; i < len; i++)
- *(buffer + i) = E1000_READ_REG_ARRAY_DWORD(hw, E1000_HOST_IF,
- offset + i);
- hdr_csum = hdr->checksum;
- hdr->checksum = 0;
- csum = e1000_calculate_checksum((u8 *)hdr,
- E1000_MNG_DHCP_COOKIE_LENGTH);
- /* If either the checksums or signature don't match, then
- * the cookie area isn't considered valid, in which case we
- * take the safe route of assuming Tx filtering is enabled.
- */
- if ((hdr_csum != csum) || (hdr->signature != E1000_IAMT_SIGNATURE)) {
- hw->mac.tx_pkt_filtering = true;
- return hw->mac.tx_pkt_filtering;
- }
-
- /* Cookie area is valid, make the final check for filtering. */
- if (!(hdr->status & E1000_MNG_DHCP_COOKIE_STATUS_PARSING))
- hw->mac.tx_pkt_filtering = false;
-
- return hw->mac.tx_pkt_filtering;
-}
-
-/**
- * e1000_mng_write_cmd_header_generic - Writes manageability command header
- * @hw: pointer to the HW structure
- * @hdr: pointer to the host interface command header
- *
- * Writes the command header after does the checksum calculation.
- **/
-s32 e1000_mng_write_cmd_header_generic(struct e1000_hw *hw,
- struct e1000_host_mng_command_header *hdr)
-{
- u16 i, length = sizeof(struct e1000_host_mng_command_header);
-
- DEBUGFUNC("e1000_mng_write_cmd_header_generic");
-
- /* Write the whole command header structure with new checksum. */
-
- hdr->checksum = e1000_calculate_checksum((u8 *)hdr, length);
-
- length >>= 2;
- /* Write the relevant command block into the ram area. */
- for (i = 0; i < length; i++) {
- E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, i,
- *((u32 *) hdr + i));
- E1000_WRITE_FLUSH(hw);
- }
-
- return E1000_SUCCESS;
-}
-
-/**
- * e1000_mng_host_if_write_generic - Write to the manageability host interface
- * @hw: pointer to the HW structure
- * @buffer: pointer to the host interface buffer
- * @length: size of the buffer
- * @offset: location in the buffer to write to
- * @sum: sum of the data (not checksum)
- *
- * This function writes the buffer content at the offset given on the host if.
- * It also does alignment considerations to do the writes in most efficient
- * way. Also fills up the sum of the buffer in *buffer parameter.
- **/
-s32 e1000_mng_host_if_write_generic(struct e1000_hw *hw, u8 *buffer,
- u16 length, u16 offset, u8 *sum)
-{
- u8 *tmp;
- u8 *bufptr = buffer;
- u32 data = 0;
- u16 remaining, i, j, prev_bytes;
-
- DEBUGFUNC("e1000_mng_host_if_write_generic");
-
- /* sum = only sum of the data and it is not checksum */
-
- if (length == 0 || offset + length > E1000_HI_MAX_MNG_DATA_LENGTH)
- return -E1000_ERR_PARAM;
-
- tmp = (u8 *)&data;
- prev_bytes = offset & 0x3;
- offset >>= 2;
-
- if (prev_bytes) {
- data = E1000_READ_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset);
- for (j = prev_bytes; j < sizeof(u32); j++) {
- *(tmp + j) = *bufptr++;
- *sum += *(tmp + j);
- }
- E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset, data);
- length -= j - prev_bytes;
- offset++;
- }
-
- remaining = length & 0x3;
- length -= remaining;
-
- /* Calculate length in DWORDs */
- length >>= 2;
-
- /* The device driver writes the relevant command block into the
- * ram area.
- */
- for (i = 0; i < length; i++) {
- for (j = 0; j < sizeof(u32); j++) {
- *(tmp + j) = *bufptr++;
- *sum += *(tmp + j);
- }
-
- E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset + i,
- data);
- }
- if (remaining) {
- for (j = 0; j < sizeof(u32); j++) {
- if (j < remaining)
- *(tmp + j) = *bufptr++;
- else
- *(tmp + j) = 0;
-
- *sum += *(tmp + j);
- }
- E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset + i,
- data);
- }
-
- return E1000_SUCCESS;
-}
-
-/**
- * e1000_mng_write_dhcp_info_generic - Writes DHCP info to host interface
- * @hw: pointer to the HW structure
- * @buffer: pointer to the host interface
- * @length: size of the buffer
- *
- * Writes the DHCP information to the host interface.
- **/
-s32 e1000_mng_write_dhcp_info_generic(struct e1000_hw *hw, u8 *buffer,
- u16 length)
-{
- struct e1000_host_mng_command_header hdr;
- s32 ret_val;
- u32 hicr;
-
- DEBUGFUNC("e1000_mng_write_dhcp_info_generic");
-
- hdr.command_id = E1000_MNG_DHCP_TX_PAYLOAD_CMD;
- hdr.command_length = length;
- hdr.reserved1 = 0;
- hdr.reserved2 = 0;
- hdr.checksum = 0;
-
- /* Enable the host interface */
- ret_val = e1000_mng_enable_host_if_generic(hw);
- if (ret_val)
- return ret_val;
-
- /* Populate the host interface with the contents of "buffer". */
- ret_val = e1000_mng_host_if_write_generic(hw, buffer, length,
- sizeof(hdr), &(hdr.checksum));
- if (ret_val)
- return ret_val;
-
- /* Write the manageability command header */
- ret_val = e1000_mng_write_cmd_header_generic(hw, &hdr);
- if (ret_val)
- return ret_val;
-
- /* Tell the ARC a new command is pending. */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- E1000_WRITE_REG(hw, E1000_HICR, hicr | E1000_HICR_C);
-
- return E1000_SUCCESS;
-}
-
-/**
- * e1000_enable_mng_pass_thru - Check if management passthrough is needed
- * @hw: pointer to the HW structure
- *
- * Verifies the hardware needs to leave interface enabled so that frames can
- * be directed to and from the management interface.
- **/
-bool e1000_enable_mng_pass_thru(struct e1000_hw *hw)
-{
- u32 manc;
- u32 fwsm, factps;
-
- DEBUGFUNC("e1000_enable_mng_pass_thru");
-
- if (!hw->mac.asf_firmware_present)
- return false;
-
- manc = E1000_READ_REG(hw, E1000_MANC);
-
- if (!(manc & E1000_MANC_RCV_TCO_EN))
- return false;
-
- if (hw->mac.has_fwsm) {
- fwsm = E1000_READ_REG(hw, E1000_FWSM);
- factps = E1000_READ_REG(hw, E1000_FACTPS);
-
- if (!(factps & E1000_FACTPS_MNGCG) &&
- ((fwsm & E1000_FWSM_MODE_MASK) ==
- (e1000_mng_mode_pt << E1000_FWSM_MODE_SHIFT)))
- return true;
- } else if ((manc & E1000_MANC_SMBUS_EN) &&
- !(manc & E1000_MANC_ASF_EN)) {
- return true;
- }
-
- return false;
-}
-
-/**
- * e1000_host_interface_command - Writes buffer to host interface
- * @hw: pointer to the HW structure
- * @buffer: contains a command to write
- * @length: the byte length of the buffer, must be multiple of 4 bytes
- *
- * Writes a buffer to the Host Interface. Upon success, returns E1000_SUCCESS
- * else returns E1000_ERR_HOST_INTERFACE_COMMAND.
- **/
-s32 e1000_host_interface_command(struct e1000_hw *hw, u8 *buffer, u32 length)
-{
- u32 hicr, i;
-
- DEBUGFUNC("e1000_host_interface_command");
-
- if (!(hw->mac.arc_subsystem_valid)) {
- DEBUGOUT("Hardware doesn't support host interface command.\n");
- return E1000_SUCCESS;
- }
-
- if (!hw->mac.asf_firmware_present) {
- DEBUGOUT("Firmware is not present.\n");
- return E1000_SUCCESS;
- }
-
- if (length == 0 || length & 0x3 ||
- length > E1000_HI_MAX_BLOCK_BYTE_LENGTH) {
- DEBUGOUT("Buffer length failure.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- /* Check that the host interface is enabled. */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if (!(hicr & E1000_HICR_EN)) {
- DEBUGOUT("E1000_HOST_EN bit disabled.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- /* Calculate length in DWORDs */
- length >>= 2;
-
- /* The device driver writes the relevant command block
- * into the ram area.
- */
- for (i = 0; i < length; i++)
- E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, i,
- *((u32 *)buffer + i));
-
- /* Setting this bit tells the ARC that a new command is pending. */
- E1000_WRITE_REG(hw, E1000_HICR, hicr | E1000_HICR_C);
-
- for (i = 0; i < E1000_HI_COMMAND_TIMEOUT; i++) {
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if (!(hicr & E1000_HICR_C))
- break;
- msec_delay(1);
- }
-
- /* Check command successful completion. */
- if (i == E1000_HI_COMMAND_TIMEOUT ||
- (!(E1000_READ_REG(hw, E1000_HICR) & E1000_HICR_SV))) {
- DEBUGOUT("Command has failed with no status valid.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- for (i = 0; i < length; i++)
- *((u32 *)buffer + i) = E1000_READ_REG_ARRAY_DWORD(hw,
- E1000_HOST_IF,
- i);
-
- return E1000_SUCCESS;
-}
-/**
- * e1000_load_firmware - Writes proxy FW code buffer to host interface
- * and execute.
- * @hw: pointer to the HW structure
- * @buffer: contains a firmware to write
- * @length: the byte length of the buffer, must be multiple of 4 bytes
- *
- * Upon success returns E1000_SUCCESS, returns E1000_ERR_CONFIG if not enabled
- * in HW else returns E1000_ERR_HOST_INTERFACE_COMMAND.
- **/
-s32 e1000_load_firmware(struct e1000_hw *hw, u8 *buffer, u32 length)
-{
- u32 hicr, hibba, fwsm, icr, i;
-
- DEBUGFUNC("e1000_load_firmware");
-
- if (hw->mac.type < e1000_i210) {
- DEBUGOUT("Hardware doesn't support loading FW by the driver\n");
- return -E1000_ERR_CONFIG;
- }
-
- /* Check that the host interface is enabled. */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if (!(hicr & E1000_HICR_EN)) {
- DEBUGOUT("E1000_HOST_EN bit disabled.\n");
- return -E1000_ERR_CONFIG;
- }
- if (!(hicr & E1000_HICR_MEMORY_BASE_EN)) {
- DEBUGOUT("E1000_HICR_MEMORY_BASE_EN bit disabled.\n");
- return -E1000_ERR_CONFIG;
- }
-
- if (length == 0 || length & 0x3 || length > E1000_HI_FW_MAX_LENGTH) {
- DEBUGOUT("Buffer length failure.\n");
- return -E1000_ERR_INVALID_ARGUMENT;
- }
-
- /* Clear notification from ROM-FW by reading ICR register */
- icr = E1000_READ_REG(hw, E1000_ICR_V2);
-
- /* Reset ROM-FW */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- hicr |= E1000_HICR_FW_RESET_ENABLE;
- E1000_WRITE_REG(hw, E1000_HICR, hicr);
- hicr |= E1000_HICR_FW_RESET;
- E1000_WRITE_REG(hw, E1000_HICR, hicr);
- E1000_WRITE_FLUSH(hw);
-
- /* Wait till MAC notifies about its readiness after ROM-FW reset */
- for (i = 0; i < (E1000_HI_COMMAND_TIMEOUT * 2); i++) {
- icr = E1000_READ_REG(hw, E1000_ICR_V2);
- if (icr & E1000_ICR_MNG)
- break;
- msec_delay(1);
- }
-
- /* Check for timeout */
- if (i == E1000_HI_COMMAND_TIMEOUT) {
- DEBUGOUT("FW reset failed.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- /* Wait till MAC is ready to accept new FW code */
- for (i = 0; i < E1000_HI_COMMAND_TIMEOUT; i++) {
- fwsm = E1000_READ_REG(hw, E1000_FWSM);
- if ((fwsm & E1000_FWSM_FW_VALID) &&
- ((fwsm & E1000_FWSM_MODE_MASK) >> E1000_FWSM_MODE_SHIFT ==
- E1000_FWSM_HI_EN_ONLY_MODE))
- break;
- msec_delay(1);
- }
-
- /* Check for timeout */
- if (i == E1000_HI_COMMAND_TIMEOUT) {
- DEBUGOUT("FW reset failed.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- /* Calculate length in DWORDs */
- length >>= 2;
-
- /* The device driver writes the relevant FW code block
- * into the ram area in DWORDs via 1kB ram addressing window.
- */
- for (i = 0; i < length; i++) {
- if (!(i % E1000_HI_FW_BLOCK_DWORD_LENGTH)) {
- /* Point to correct 1kB ram window */
- hibba = E1000_HI_FW_BASE_ADDRESS +
- ((E1000_HI_FW_BLOCK_DWORD_LENGTH << 2) *
- (i / E1000_HI_FW_BLOCK_DWORD_LENGTH));
-
- E1000_WRITE_REG(hw, E1000_HIBBA, hibba);
- }
-
- E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF,
- i % E1000_HI_FW_BLOCK_DWORD_LENGTH,
- *((u32 *)buffer + i));
- }
-
- /* Setting this bit tells the ARC that a new FW is ready to execute. */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- E1000_WRITE_REG(hw, E1000_HICR, hicr | E1000_HICR_C);
-
- for (i = 0; i < E1000_HI_COMMAND_TIMEOUT; i++) {
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if (!(hicr & E1000_HICR_C))
- break;
- msec_delay(1);
- }
-
- /* Check for successful FW start. */
- if (i == E1000_HI_COMMAND_TIMEOUT) {
- DEBUGOUT("New FW did not start within timeout period.\n");
- return -E1000_ERR_HOST_INTERFACE_COMMAND;
- }
-
- return E1000_SUCCESS;
-}
Code Review / deb_dpdk.git / blobdiff