linux/drivers/thunderbolt/nhi_regs.h

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 22:07:57 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Thunderbolt driver - NHI registers
*
* Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
* Copyright (C) 2018, Intel Corporation
*/
#ifndef NHI_REGS_H_
#define NHI_REGS_H_
#include <linux/types.h>
enum ring_flags {
RING_FLAG_ISOCH_ENABLE = 1 << 27, /* TX only? */
RING_FLAG_E2E_FLOW_CONTROL = 1 << 28,
RING_FLAG_PCI_NO_SNOOP = 1 << 29,
RING_FLAG_RAW = 1 << 30, /* ignore EOF/SOF mask, include checksum */
RING_FLAG_ENABLE = 1 << 31,
};
/**
* struct ring_desc - TX/RX ring entry
*
* For TX set length/eof/sof.
* For RX length/eof/sof are set by the NHI.
*/
struct ring_desc {
u64 phys;
u32 length:12;
u32 eof:4;
u32 sof:4;
enum ring_desc_flags flags:12;
u32 time; /* write zero */
} __packed;
/* NHI registers in bar 0 */
/*
* 16 bytes per entry, one entry for every hop (REG_HOP_COUNT)
* 00: physical pointer to an array of struct ring_desc
* 08: ring tail (set by NHI)
* 10: ring head (index of first non posted descriptor)
* 12: descriptor count
*/
#define REG_TX_RING_BASE 0x00000
/*
* 16 bytes per entry, one entry for every hop (REG_HOP_COUNT)
* 00: physical pointer to an array of struct ring_desc
* 08: ring head (index of first not posted descriptor)
* 10: ring tail (set by NHI)
* 12: descriptor count
* 14: max frame sizes (anything larger than 0x100 has no effect)
*/
#define REG_RX_RING_BASE 0x08000
/*
* 32 bytes per entry, one entry for every hop (REG_HOP_COUNT)
* 00: enum_ring_flags
* 04: isoch time stamp ?? (write 0)
* ..: unknown
*/
#define REG_TX_OPTIONS_BASE 0x19800
/*
* 32 bytes per entry, one entry for every hop (REG_HOP_COUNT)
* 00: enum ring_flags
* If RING_FLAG_E2E_FLOW_CONTROL is set then bits 13-23 must be set to
* the corresponding TX hop id.
* 04: EOF/SOF mask (ignored for RING_FLAG_RAW rings)
* ..: unknown
*/
#define REG_RX_OPTIONS_BASE 0x29800
#define REG_RX_OPTIONS_E2E_HOP_MASK GENMASK(22, 12)
#define REG_RX_OPTIONS_E2E_HOP_SHIFT 12
/*
* three bitfields: tx, rx, rx overflow
* Every bitfield contains one bit for every hop (REG_HOP_COUNT). Registers are
* cleared on read. New interrupts are fired only after ALL registers have been
* read (even those containing only disabled rings).
*/
#define REG_RING_NOTIFY_BASE 0x37800
#define RING_NOTIFY_REG_COUNT(nhi) ((31 + 3 * nhi->hop_count) / 32)
/*
* two bitfields: rx, tx
* Both bitfields contains one bit for every hop (REG_HOP_COUNT). To
* enable/disable interrupts set/clear the corresponding bits.
*/
#define REG_RING_INTERRUPT_BASE 0x38200
#define RING_INTERRUPT_REG_COUNT(nhi) ((31 + 2 * nhi->hop_count) / 32)
#define REG_INT_THROTTLING_RATE 0x38c00
/* Interrupt Vector Allocation */
#define REG_INT_VEC_ALLOC_BASE 0x38c40
#define REG_INT_VEC_ALLOC_BITS 4
#define REG_INT_VEC_ALLOC_MASK GENMASK(3, 0)
#define REG_INT_VEC_ALLOC_REGS (32 / REG_INT_VEC_ALLOC_BITS)
/* The last 11 bits contain the number of hops supported by the NHI port. */
#define REG_HOP_COUNT 0x39640
#define REG_DMA_MISC 0x39864
#define REG_DMA_MISC_INT_AUTO_CLEAR BIT(2)
#define REG_INMAIL_DATA 0x39900
#define REG_INMAIL_CMD 0x39904
#define REG_INMAIL_CMD_MASK GENMASK(7, 0)
#define REG_INMAIL_ERROR BIT(30)
#define REG_INMAIL_OP_REQUEST BIT(31)
#define REG_OUTMAIL_CMD 0x3990c
#define REG_OUTMAIL_CMD_OPMODE_SHIFT 8
#define REG_OUTMAIL_CMD_OPMODE_MASK GENMASK(11, 8)
thunderbolt: Add support for Internal Connection Manager (ICM) Starting from Intel Falcon Ridge the internal connection manager running on the Thunderbolt host controller has been supporting 4 security levels. One reason for this is to prevent DMA attacks and only allow connecting devices the user trusts. The internal connection manager (ICM) is the preferred way of connecting Thunderbolt devices over software only implementation typically used on Macs. The driver communicates with ICM using special Thunderbolt ring 0 (control channel) messages. In order to handle these messages we add support for the ICM messages to the control channel. The security levels are as follows: none - No security, all tunnels are created automatically user - User needs to approve the device before tunnels are created secure - User need to approve the device before tunnels are created. The device is sent a challenge on future connects to be able to verify it is actually the approved device. dponly - Only Display Port and USB tunnels can be created and those are created automatically. The security levels are typically configurable from the system BIOS and by default it is set to "user" on many systems. In this patch each Thunderbolt device will have either one or two new sysfs attributes: authorized and key. The latter appears for devices that support secure connect. In order to identify the device the user can read identication information, including UUID and name of the device from sysfs and based on that make a decision to authorize the device. The device is authorized by simply writing 1 to the "authorized" sysfs attribute. This is following the USB bus device authorization mechanism. The secure connect requires an additional challenge step (writing 2 to the "authorized" attribute) in future connects when the key has already been stored to the NVM of the device. Non-ICM systems (before Alpine Ridge) continue to use the existing functionality and the security level is set to none. For systems with Alpine Ridge, even on Apple hardware, we will use ICM. This code is based on the work done by Amir Levy and Michael Jamet. Signed-off-by: Michael Jamet <michael.jamet@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-06 20:25:16 +08:00
#define REG_FW_STS 0x39944
#define REG_FW_STS_NVM_AUTH_DONE BIT(31)
#define REG_FW_STS_CIO_RESET_REQ BIT(30)
#define REG_FW_STS_ICM_EN_CPU BIT(2)
#define REG_FW_STS_ICM_EN_INVERT BIT(1)
#define REG_FW_STS_ICM_EN BIT(0)
/* ICL NHI VSEC registers */
/* FW ready */
#define VS_CAP_9 0xc8
#define VS_CAP_9_FW_READY BIT(31)
/* UUID */
#define VS_CAP_10 0xcc
#define VS_CAP_11 0xd0
/* LTR */
#define VS_CAP_15 0xe0
#define VS_CAP_16 0xe4
/* TBT2PCIe */
#define VS_CAP_18 0xec
#define VS_CAP_18_DONE BIT(0)
/* PCIe2TBT */
#define VS_CAP_19 0xf0
#define VS_CAP_19_VALID BIT(0)
#define VS_CAP_19_CMD_SHIFT 1
#define VS_CAP_19_CMD_MASK GENMASK(7, 1)
/* Force power */
#define VS_CAP_22 0xfc
#define VS_CAP_22_FORCE_POWER BIT(1)
#define VS_CAP_22_DMA_DELAY_MASK GENMASK(31, 24)
#define VS_CAP_22_DMA_DELAY_SHIFT 24
/**
* enum icl_lc_mailbox_cmd - ICL specific LC mailbox commands
* @ICL_LC_GO2SX: Ask LC to enter Sx without wake
* @ICL_LC_GO2SX_NO_WAKE: Ask LC to enter Sx with wake
* @ICL_LC_PREPARE_FOR_RESET: Prepare LC for reset
*/
enum icl_lc_mailbox_cmd {
ICL_LC_GO2SX = 0x02,
ICL_LC_GO2SX_NO_WAKE = 0x03,
ICL_LC_PREPARE_FOR_RESET = 0x21,
};
#endif