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-rw-r--r--sys/dev/em/e1000_manage.c390
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diff --git a/sys/dev/em/e1000_manage.c b/sys/dev/em/e1000_manage.c
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--- a/sys/dev/em/e1000_manage.c
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-/******************************************************************************
-
- Copyright (c) 2001-2008, Intel Corporation
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- 3. Neither the name of the Intel Corporation nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGE.
-
-******************************************************************************/
-/*$FreeBSD$*/
-
-#include "e1000_api.h"
-#include "e1000_manage.h"
-
-static u8 e1000_calculate_checksum(u8 *buffer, u32 length);
-
-/**
- * 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.
- **/
-static 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;
- s32 ret_val = E1000_SUCCESS;
- u8 i;
-
- DEBUGFUNC("e1000_mng_enable_host_if_generic");
-
- /* Check that the host interface is enabled. */
- hicr = E1000_READ_REG(hw, E1000_HICR);
- if ((hicr & E1000_HICR_EN) == 0) {
- DEBUGOUT("E1000_HOST_EN bit disabled.\n");
- ret_val = -E1000_ERR_HOST_INTERFACE_COMMAND;
- goto out;
- }
- /* 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");
- ret_val = -E1000_ERR_HOST_INTERFACE_COMMAND;
- goto out;
- }
-
-out:
- return ret_val;
-}
-
-/**
- * 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;
-
- DEBUGFUNC("e1000_check_mng_mode_generic");
-
- fwsm = E1000_READ_REG(hw, E1000_FWSM);
-
- 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;
- bool tx_filter = TRUE;
-
- DEBUGFUNC("e1000_enable_tx_pkt_filtering_generic");
-
- /* No manageability, no filtering */
- if (!hw->mac.ops.check_mng_mode(hw)) {
- tx_filter = FALSE;
- goto out;
- }
-
- /*
- * If we can't read from the host interface for whatever
- * reason, disable filtering.
- */
- ret_val = hw->mac.ops.mng_enable_host_if(hw);
- if (ret_val != E1000_SUCCESS) {
- tx_filter = FALSE;
- goto out;
- }
-
- /* 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)
- goto out;
- if (hdr->signature != E1000_IAMT_SIGNATURE)
- goto out;
-
- /* Cookie area is valid, make the final check for filtering. */
- if (!(hdr->status & E1000_MNG_DHCP_COOKIE_STATUS_PARSING))
- tx_filter = FALSE;
-
-out:
- hw->mac.tx_pkt_filtering = tx_filter;
- return tx_filter;
-}
-
-/**
- * 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 = hw->mac.ops.mng_enable_host_if(hw);
- if (ret_val)
- goto out;
-
- /* Populate the host interface with the contents of "buffer". */
- ret_val = hw->mac.ops.mng_host_if_write(hw, buffer, length,
- sizeof(hdr), &(hdr.checksum));
- if (ret_val)
- goto out;
-
- /* Write the manageability command header */
- ret_val = hw->mac.ops.mng_write_cmd_header(hw, &hdr);
- if (ret_val)
- goto out;
-
- /* 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);
-
-out:
- return ret_val;
-}
-
-/**
- * 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;
- s32 ret_val = E1000_SUCCESS;
- 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) {
- ret_val = -E1000_ERR_PARAM;
- goto out;
- }
-
- 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);
- }
-
-out:
- return ret_val;
-}
-
-/**
- * e1000_enable_mng_pass_thru - Enable processing of ARP's
- * @hw: pointer to the HW structure
- *
- * Verifies the hardware needs to allow ARPs to be processed by the host.
- **/
-bool e1000_enable_mng_pass_thru(struct e1000_hw *hw)
-{
- u32 manc;
- u32 fwsm, factps;
- bool ret_val = FALSE;
-
- DEBUGFUNC("e1000_enable_mng_pass_thru");
-
- if (!hw->mac.asf_firmware_present)
- goto out;
-
- manc = E1000_READ_REG(hw, E1000_MANC);
-
- if (!(manc & E1000_MANC_RCV_TCO_EN) ||
- !(manc & E1000_MANC_EN_MAC_ADDR_FILTER))
- goto out;
-
- if (hw->mac.arc_subsystem_valid) {
- 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))) {
- ret_val = TRUE;
- goto out;
- }
- } else {
- if ((manc & E1000_MANC_SMBUS_EN) &&
- !(manc & E1000_MANC_ASF_EN)) {
- ret_val = TRUE;
- goto out;
- }
- }
-
-out:
- return ret_val;
-}
-
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