linux/drivers/misc/mei/hw-me-regs.h
Tomas Winkler 5e6533a6f5 mei: me: do not load the driver if the FW doesn't support MEI interface
NM and SPS  FW types that may run on ME device on server platforms
do not have valid MEI/HECI interface and driver should not
be bound to it as this might lead to system hung.
In practice not all BIOSes effectively hide such devices from the
OS and in some cases it is not possible.

We determine FW type by examining Host FW status registers in order to
unbind the driver.
In this patch we are adding check for ME on Cougar Point, Lynx Point
Devices

Cc: stable <stable@vger.kernel.org> # 3.10+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Tested-by: Nikola Ciprich <nikola.ciprich@linuxbox.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 12:24:16 -07:00

177 lines
7.0 KiB
C

/******************************************************************************
* Intel Management Engine Interface (Intel MEI) Linux driver
* Intel MEI Interface Header
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that 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 Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Corporation.
* linux-mei@linux.intel.com
* http://www.intel.com
*
* BSD LICENSE
*
* Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name 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.
*
*****************************************************************************/
#ifndef _MEI_HW_MEI_REGS_H_
#define _MEI_HW_MEI_REGS_H_
/*
* MEI device IDs
*/
#define MEI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */
#define MEI_DEV_ID_82G35 0x2984 /* 82G35 Express */
#define MEI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */
#define MEI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */
#define MEI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */
#define MEI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */
#define MEI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */
#define MEI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */
#define MEI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */
#define MEI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */
#define MEI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */
#define MEI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */
#define MEI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */
#define MEI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */
#define MEI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */
#define MEI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */
#define MEI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */
#define MEI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */
#define MEI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */
#define MEI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */
#define MEI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */
#define MEI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */
#define MEI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */
#define MEI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */
#define MEI_DEV_ID_IBXPK_1 0x3B64 /* Calpella */
#define MEI_DEV_ID_IBXPK_2 0x3B65 /* Calpella */
#define MEI_DEV_ID_CPT_1 0x1C3A /* Couger Point */
#define MEI_DEV_ID_PBG_1 0x1D3A /* C600/X79 Patsburg */
#define MEI_DEV_ID_PPT_1 0x1E3A /* Panther Point */
#define MEI_DEV_ID_PPT_2 0x1CBA /* Panther Point */
#define MEI_DEV_ID_PPT_3 0x1DBA /* Panther Point */
#define MEI_DEV_ID_LPT_H 0x8C3A /* Lynx Point H */
#define MEI_DEV_ID_LPT_W 0x8D3A /* Lynx Point - Wellsburg */
#define MEI_DEV_ID_LPT_LP 0x9C3A /* Lynx Point LP */
#define MEI_DEV_ID_LPT_HR 0x8CBA /* Lynx Point H Refresh */
#define MEI_DEV_ID_WPT_LP 0x9CBA /* Wildcat Point LP */
/* Host Firmware Status Registers in PCI Config Space */
#define PCI_CFG_HFS_1 0x40
#define PCI_CFG_HFS_2 0x48
/*
* MEI HW Section
*/
/* MEI registers */
/* H_CB_WW - Host Circular Buffer (CB) Write Window register */
#define H_CB_WW 0
/* H_CSR - Host Control Status register */
#define H_CSR 4
/* ME_CB_RW - ME Circular Buffer Read Window register (read only) */
#define ME_CB_RW 8
/* ME_CSR_HA - ME Control Status Host Access register (read only) */
#define ME_CSR_HA 0xC
/* register bits of H_CSR (Host Control Status register) */
/* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */
#define H_CBD 0xFF000000
/* Host Circular Buffer Write Pointer */
#define H_CBWP 0x00FF0000
/* Host Circular Buffer Read Pointer */
#define H_CBRP 0x0000FF00
/* Host Reset */
#define H_RST 0x00000010
/* Host Ready */
#define H_RDY 0x00000008
/* Host Interrupt Generate */
#define H_IG 0x00000004
/* Host Interrupt Status */
#define H_IS 0x00000002
/* Host Interrupt Enable */
#define H_IE 0x00000001
/* register bits of ME_CSR_HA (ME Control Status Host Access register) */
/* ME CB (Circular Buffer) Depth HRA (Host Read Access) - host read only
access to ME_CBD */
#define ME_CBD_HRA 0xFF000000
/* ME CB Write Pointer HRA - host read only access to ME_CBWP */
#define ME_CBWP_HRA 0x00FF0000
/* ME CB Read Pointer HRA - host read only access to ME_CBRP */
#define ME_CBRP_HRA 0x0000FF00
/* ME Reset HRA - host read only access to ME_RST */
#define ME_RST_HRA 0x00000010
/* ME Ready HRA - host read only access to ME_RDY */
#define ME_RDY_HRA 0x00000008
/* ME Interrupt Generate HRA - host read only access to ME_IG */
#define ME_IG_HRA 0x00000004
/* ME Interrupt Status HRA - host read only access to ME_IS */
#define ME_IS_HRA 0x00000002
/* ME Interrupt Enable HRA - host read only access to ME_IE */
#define ME_IE_HRA 0x00000001
#endif /* _MEI_HW_MEI_REGS_H_ */