579 lines
16 KiB
C
579 lines
16 KiB
C
/******************************************************************************
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SPDX-License-Identifier: BSD-3-Clause
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Copyright (c) 2001-2020, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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******************************************************************************/
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/*$FreeBSD$*/
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#include "e1000_api.h"
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#include "e1000_manage.h"
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/**
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* e1000_calculate_checksum - Calculate checksum for buffer
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* @buffer: pointer to EEPROM
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* @length: size of EEPROM to calculate a checksum for
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*
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* Calculates the checksum for some buffer on a specified length. The
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* checksum calculated is returned.
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**/
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u8 e1000_calculate_checksum(u8 *buffer, u32 length)
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{
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u32 i;
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u8 sum = 0;
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DEBUGFUNC("e1000_calculate_checksum");
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if (!buffer)
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return 0;
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for (i = 0; i < length; i++)
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sum += buffer[i];
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return (u8) (0 - sum);
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}
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/**
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* e1000_mng_enable_host_if_generic - Checks host interface is enabled
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* @hw: pointer to the HW structure
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*
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* Returns E1000_success upon success, else E1000_ERR_HOST_INTERFACE_COMMAND
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*
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* This function checks whether the HOST IF is enabled for command operation
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* and also checks whether the previous command is completed. It busy waits
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* in case of previous command is not completed.
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**/
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s32 e1000_mng_enable_host_if_generic(struct e1000_hw *hw)
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{
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u32 hicr;
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u8 i;
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DEBUGFUNC("e1000_mng_enable_host_if_generic");
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if (!hw->mac.arc_subsystem_valid) {
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DEBUGOUT("ARC subsystem not valid.\n");
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return -E1000_ERR_HOST_INTERFACE_COMMAND;
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}
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/* Check that the host interface is enabled. */
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hicr = E1000_READ_REG(hw, E1000_HICR);
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if (!(hicr & E1000_HICR_EN)) {
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DEBUGOUT("E1000_HOST_EN bit disabled.\n");
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return -E1000_ERR_HOST_INTERFACE_COMMAND;
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}
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/* check the previous command is completed */
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for (i = 0; i < E1000_MNG_DHCP_COMMAND_TIMEOUT; i++) {
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hicr = E1000_READ_REG(hw, E1000_HICR);
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if (!(hicr & E1000_HICR_C))
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break;
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msec_delay_irq(1);
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}
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if (i == E1000_MNG_DHCP_COMMAND_TIMEOUT) {
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DEBUGOUT("Previous command timeout failed .\n");
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return -E1000_ERR_HOST_INTERFACE_COMMAND;
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}
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return E1000_SUCCESS;
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}
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/**
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* e1000_check_mng_mode_generic - Generic check management mode
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* @hw: pointer to the HW structure
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*
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* Reads the firmware semaphore register and returns true (>0) if
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* manageability is enabled, else false (0).
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**/
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bool e1000_check_mng_mode_generic(struct e1000_hw *hw)
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{
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u32 fwsm = E1000_READ_REG(hw, E1000_FWSM);
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DEBUGFUNC("e1000_check_mng_mode_generic");
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return (fwsm & E1000_FWSM_MODE_MASK) ==
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(E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT);
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}
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/**
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* e1000_enable_tx_pkt_filtering_generic - Enable packet filtering on Tx
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* @hw: pointer to the HW structure
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*
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* Enables packet filtering on transmit packets if manageability is enabled
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* and host interface is enabled.
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**/
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bool e1000_enable_tx_pkt_filtering_generic(struct e1000_hw *hw)
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{
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struct e1000_host_mng_dhcp_cookie *hdr = &hw->mng_cookie;
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u32 *buffer = (u32 *)&hw->mng_cookie;
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u32 offset;
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s32 ret_val, hdr_csum, csum;
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u8 i, len;
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DEBUGFUNC("e1000_enable_tx_pkt_filtering_generic");
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hw->mac.tx_pkt_filtering = true;
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/* No manageability, no filtering */
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if (!hw->mac.ops.check_mng_mode(hw)) {
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hw->mac.tx_pkt_filtering = false;
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return hw->mac.tx_pkt_filtering;
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}
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/* If we can't read from the host interface for whatever
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* reason, disable filtering.
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*/
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ret_val = e1000_mng_enable_host_if_generic(hw);
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if (ret_val != E1000_SUCCESS) {
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hw->mac.tx_pkt_filtering = false;
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return hw->mac.tx_pkt_filtering;
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}
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/* Read in the header. Length and offset are in dwords. */
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len = E1000_MNG_DHCP_COOKIE_LENGTH >> 2;
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offset = E1000_MNG_DHCP_COOKIE_OFFSET >> 2;
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for (i = 0; i < len; i++)
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*(buffer + i) = E1000_READ_REG_ARRAY_DWORD(hw, E1000_HOST_IF,
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offset + i);
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hdr_csum = hdr->checksum;
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hdr->checksum = 0;
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csum = e1000_calculate_checksum((u8 *)hdr,
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E1000_MNG_DHCP_COOKIE_LENGTH);
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/* If either the checksums or signature don't match, then
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* the cookie area isn't considered valid, in which case we
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* take the safe route of assuming Tx filtering is enabled.
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*/
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if ((hdr_csum != csum) || (hdr->signature != E1000_IAMT_SIGNATURE)) {
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hw->mac.tx_pkt_filtering = true;
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return hw->mac.tx_pkt_filtering;
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}
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/* Cookie area is valid, make the final check for filtering. */
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if (!(hdr->status & E1000_MNG_DHCP_COOKIE_STATUS_PARSING))
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hw->mac.tx_pkt_filtering = false;
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return hw->mac.tx_pkt_filtering;
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}
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/**
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* e1000_mng_write_cmd_header_generic - Writes manageability command header
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* @hw: pointer to the HW structure
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* @hdr: pointer to the host interface command header
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*
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* Writes the command header after does the checksum calculation.
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**/
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s32 e1000_mng_write_cmd_header_generic(struct e1000_hw *hw,
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struct e1000_host_mng_command_header *hdr)
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{
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u16 i, length = sizeof(struct e1000_host_mng_command_header);
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DEBUGFUNC("e1000_mng_write_cmd_header_generic");
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/* Write the whole command header structure with new checksum. */
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hdr->checksum = e1000_calculate_checksum((u8 *)hdr, length);
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length >>= 2;
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/* Write the relevant command block into the ram area. */
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for (i = 0; i < length; i++) {
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E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, i,
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*((u32 *) hdr + i));
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E1000_WRITE_FLUSH(hw);
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}
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return E1000_SUCCESS;
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}
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/**
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* e1000_mng_host_if_write_generic - Write to the manageability host interface
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* @hw: pointer to the HW structure
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* @buffer: pointer to the host interface buffer
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* @length: size of the buffer
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* @offset: location in the buffer to write to
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* @sum: sum of the data (not checksum)
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*
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* This function writes the buffer content at the offset given on the host if.
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* It also does alignment considerations to do the writes in most efficient
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* way. Also fills up the sum of the buffer in *buffer parameter.
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**/
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s32 e1000_mng_host_if_write_generic(struct e1000_hw *hw, u8 *buffer,
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u16 length, u16 offset, u8 *sum)
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{
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u8 *tmp;
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u8 *bufptr = buffer;
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u32 data = 0;
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u16 remaining, i, j, prev_bytes;
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DEBUGFUNC("e1000_mng_host_if_write_generic");
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/* sum = only sum of the data and it is not checksum */
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if (length == 0 || offset + length > E1000_HI_MAX_MNG_DATA_LENGTH)
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return -E1000_ERR_PARAM;
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tmp = (u8 *)&data;
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prev_bytes = offset & 0x3;
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offset >>= 2;
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if (prev_bytes) {
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data = E1000_READ_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset);
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for (j = prev_bytes; j < sizeof(u32); j++) {
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*(tmp + j) = *bufptr++;
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*sum += *(tmp + j);
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}
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E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset, data);
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length -= j - prev_bytes;
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offset++;
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}
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remaining = length & 0x3;
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length -= remaining;
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/* Calculate length in DWORDs */
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length >>= 2;
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/* The device driver writes the relevant command block into the
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* ram area.
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*/
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for (i = 0; i < length; i++) {
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for (j = 0; j < sizeof(u32); j++) {
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*(tmp + j) = *bufptr++;
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*sum += *(tmp + j);
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}
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E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset + i,
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data);
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}
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if (remaining) {
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for (j = 0; j < sizeof(u32); j++) {
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if (j < remaining)
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*(tmp + j) = *bufptr++;
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else
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*(tmp + j) = 0;
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*sum += *(tmp + j);
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}
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E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, offset + i,
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data);
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}
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return E1000_SUCCESS;
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}
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/**
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* e1000_mng_write_dhcp_info_generic - Writes DHCP info to host interface
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* @hw: pointer to the HW structure
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* @buffer: pointer to the host interface
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* @length: size of the buffer
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*
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* Writes the DHCP information to the host interface.
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**/
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s32 e1000_mng_write_dhcp_info_generic(struct e1000_hw *hw, u8 *buffer,
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u16 length)
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{
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struct e1000_host_mng_command_header hdr;
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s32 ret_val;
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u32 hicr;
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DEBUGFUNC("e1000_mng_write_dhcp_info_generic");
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hdr.command_id = E1000_MNG_DHCP_TX_PAYLOAD_CMD;
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hdr.command_length = length;
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hdr.reserved1 = 0;
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hdr.reserved2 = 0;
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hdr.checksum = 0;
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/* Enable the host interface */
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ret_val = e1000_mng_enable_host_if_generic(hw);
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if (ret_val)
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return ret_val;
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/* Populate the host interface with the contents of "buffer". */
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ret_val = e1000_mng_host_if_write_generic(hw, buffer, length,
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sizeof(hdr), &(hdr.checksum));
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if (ret_val)
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return ret_val;
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/* Write the manageability command header */
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ret_val = e1000_mng_write_cmd_header_generic(hw, &hdr);
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if (ret_val)
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return ret_val;
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/* Tell the ARC a new command is pending. */
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hicr = E1000_READ_REG(hw, E1000_HICR);
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E1000_WRITE_REG(hw, E1000_HICR, hicr | E1000_HICR_C);
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return E1000_SUCCESS;
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}
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/**
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* e1000_enable_mng_pass_thru - Check if management passthrough is needed
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* @hw: pointer to the HW structure
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*
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* Verifies the hardware needs to leave interface enabled so that frames can
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* be directed to and from the management interface.
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**/
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bool e1000_enable_mng_pass_thru(struct e1000_hw *hw)
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{
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u32 manc;
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u32 fwsm, factps;
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DEBUGFUNC("e1000_enable_mng_pass_thru");
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if (!hw->mac.asf_firmware_present)
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return false;
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manc = E1000_READ_REG(hw, E1000_MANC);
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if (!(manc & E1000_MANC_RCV_TCO_EN))
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return false;
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if (hw->mac.has_fwsm) {
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fwsm = E1000_READ_REG(hw, E1000_FWSM);
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factps = E1000_READ_REG(hw, E1000_FACTPS);
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if (!(factps & E1000_FACTPS_MNGCG) &&
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((fwsm & E1000_FWSM_MODE_MASK) ==
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(e1000_mng_mode_pt << E1000_FWSM_MODE_SHIFT)))
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return true;
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} else if ((hw->mac.type == e1000_82574) ||
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(hw->mac.type == e1000_82583)) {
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u16 data;
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s32 ret_val;
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factps = E1000_READ_REG(hw, E1000_FACTPS);
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ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &data);
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if (ret_val)
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return false;
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if (!(factps & E1000_FACTPS_MNGCG) &&
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((data & E1000_NVM_INIT_CTRL2_MNGM) ==
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(e1000_mng_mode_pt << 13)))
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return true;
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} else if ((manc & E1000_MANC_SMBUS_EN) &&
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!(manc & E1000_MANC_ASF_EN)) {
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return true;
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}
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return false;
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}
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/**
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* e1000_host_interface_command - Writes buffer to host interface
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* @hw: pointer to the HW structure
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* @buffer: contains a command to write
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* @length: the byte length of the buffer, must be multiple of 4 bytes
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*
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* Writes a buffer to the Host Interface. Upon success, returns E1000_SUCCESS
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* else returns E1000_ERR_HOST_INTERFACE_COMMAND.
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**/
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s32 e1000_host_interface_command(struct e1000_hw *hw, u8 *buffer, u32 length)
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{
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u32 hicr, i;
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DEBUGFUNC("e1000_host_interface_command");
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if (!(hw->mac.arc_subsystem_valid)) {
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DEBUGOUT("Hardware doesn't support host interface command.\n");
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return E1000_SUCCESS;
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}
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if (!hw->mac.asf_firmware_present) {
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DEBUGOUT("Firmware is not present.\n");
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return E1000_SUCCESS;
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}
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if (length == 0 || length & 0x3 ||
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length > E1000_HI_MAX_BLOCK_BYTE_LENGTH) {
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DEBUGOUT("Buffer length failure.\n");
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return -E1000_ERR_HOST_INTERFACE_COMMAND;
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}
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/* Check that the host interface is enabled. */
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hicr = E1000_READ_REG(hw, E1000_HICR);
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if (!(hicr & E1000_HICR_EN)) {
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DEBUGOUT("E1000_HOST_EN bit disabled.\n");
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return -E1000_ERR_HOST_INTERFACE_COMMAND;
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}
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/* Calculate length in DWORDs */
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length >>= 2;
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/* The device driver writes the relevant command block
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* into the ram area.
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*/
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for (i = 0; i < length; i++)
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E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, i,
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*((u32 *)buffer + i));
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/* Setting this bit tells the ARC that a new command is pending. */
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E1000_WRITE_REG(hw, E1000_HICR, hicr | E1000_HICR_C);
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for (i = 0; i < E1000_HI_COMMAND_TIMEOUT; i++) {
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hicr = E1000_READ_REG(hw, E1000_HICR);
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if (!(hicr & E1000_HICR_C))
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break;
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msec_delay(1);
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}
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/* Check command successful completion. */
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if (i == E1000_HI_COMMAND_TIMEOUT ||
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(!(E1000_READ_REG(hw, E1000_HICR) & E1000_HICR_SV))) {
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DEBUGOUT("Command has failed with no status valid.\n");
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return -E1000_ERR_HOST_INTERFACE_COMMAND;
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}
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for (i = 0; i < length; i++)
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*((u32 *)buffer + i) = E1000_READ_REG_ARRAY_DWORD(hw,
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E1000_HOST_IF,
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i);
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return E1000_SUCCESS;
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}
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/**
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* e1000_load_firmware - Writes proxy FW code buffer to host interface
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* and execute.
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* @hw: pointer to the HW structure
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* @buffer: contains a firmware to write
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* @length: the byte length of the buffer, must be multiple of 4 bytes
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*
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* Upon success returns E1000_SUCCESS, returns E1000_ERR_CONFIG if not enabled
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* in HW else returns E1000_ERR_HOST_INTERFACE_COMMAND.
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**/
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s32 e1000_load_firmware(struct e1000_hw *hw, u8 *buffer, u32 length)
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{
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u32 hicr, hibba, fwsm, icr, i;
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DEBUGFUNC("e1000_load_firmware");
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if (hw->mac.type < e1000_i210) {
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DEBUGOUT("Hardware doesn't support loading FW by the driver\n");
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return -E1000_ERR_CONFIG;
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}
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|
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/* Check that the host interface is enabled. */
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hicr = E1000_READ_REG(hw, E1000_HICR);
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if (!(hicr & E1000_HICR_EN)) {
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DEBUGOUT("E1000_HOST_EN bit disabled.\n");
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return -E1000_ERR_CONFIG;
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}
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if (!(hicr & E1000_HICR_MEMORY_BASE_EN)) {
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DEBUGOUT("E1000_HICR_MEMORY_BASE_EN bit disabled.\n");
|
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return -E1000_ERR_CONFIG;
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}
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|
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if (length == 0 || length & 0x3 || length > E1000_HI_FW_MAX_LENGTH) {
|
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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;
|
|
}
|