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b24413180f
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>
122 lines
6.5 KiB
C
122 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/****************************************************************************/
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/*
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* mcfdma.h -- Coldfire internal DMA support defines.
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*
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* (C) Copyright 1999, Rob Scott (rscott@mtrob.ml.org)
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*/
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/****************************************************************************/
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#ifndef mcfdma_h
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#define mcfdma_h
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/****************************************************************************/
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#if !defined(CONFIG_M5272)
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/*
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* Define the DMA register set addresses.
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* Note: these are longword registers, use unsigned long as data type
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*/
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#define MCFDMA_SAR 0x00 /* DMA source address (r/w) */
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#define MCFDMA_DAR 0x01 /* DMA destination adr (r/w) */
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/* these are word registers, use unsigned short data type */
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#define MCFDMA_DCR 0x04 /* DMA control reg (r/w) */
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#define MCFDMA_BCR 0x06 /* DMA byte count reg (r/w) */
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/* these are byte registers, use unsiged char data type */
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#define MCFDMA_DSR 0x10 /* DMA status reg (r/w) */
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#define MCFDMA_DIVR 0x14 /* DMA interrupt vec (r/w) */
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/*
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* Bit definitions for the DMA Control Register (DCR).
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*/
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#define MCFDMA_DCR_INT 0x8000 /* Enable completion irq */
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#define MCFDMA_DCR_EEXT 0x4000 /* Enable external DMA req */
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#define MCFDMA_DCR_CS 0x2000 /* Enable cycle steal */
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#define MCFDMA_DCR_AA 0x1000 /* Enable auto alignment */
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#define MCFDMA_DCR_BWC_MASK 0x0E00 /* Bandwidth ctl mask */
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#define MCFDMA_DCR_BWC_512 0x0200 /* Bandwidth: 512 Bytes */
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#define MCFDMA_DCR_BWC_1024 0x0400 /* Bandwidth: 1024 Bytes */
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#define MCFDMA_DCR_BWC_2048 0x0600 /* Bandwidth: 2048 Bytes */
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#define MCFDMA_DCR_BWC_4096 0x0800 /* Bandwidth: 4096 Bytes */
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#define MCFDMA_DCR_BWC_8192 0x0a00 /* Bandwidth: 8192 Bytes */
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#define MCFDMA_DCR_BWC_16384 0x0c00 /* Bandwidth: 16384 Bytes */
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#define MCFDMA_DCR_BWC_32768 0x0e00 /* Bandwidth: 32768 Bytes */
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#define MCFDMA_DCR_SAA 0x0100 /* Single Address Access */
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#define MCFDMA_DCR_S_RW 0x0080 /* SAA read/write value */
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#define MCFDMA_DCR_SINC 0x0040 /* Source addr inc enable */
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#define MCFDMA_DCR_SSIZE_MASK 0x0030 /* Src xfer size */
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#define MCFDMA_DCR_SSIZE_LONG 0x0000 /* Src xfer size, 00 = longw */
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#define MCFDMA_DCR_SSIZE_BYTE 0x0010 /* Src xfer size, 01 = byte */
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#define MCFDMA_DCR_SSIZE_WORD 0x0020 /* Src xfer size, 10 = word */
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#define MCFDMA_DCR_SSIZE_LINE 0x0030 /* Src xfer size, 11 = line */
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#define MCFDMA_DCR_DINC 0x0008 /* Dest addr inc enable */
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#define MCFDMA_DCR_DSIZE_MASK 0x0006 /* Dest xfer size */
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#define MCFDMA_DCR_DSIZE_LONG 0x0000 /* Dest xfer size, 00 = long */
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#define MCFDMA_DCR_DSIZE_BYTE 0x0002 /* Dest xfer size, 01 = byte */
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#define MCFDMA_DCR_DSIZE_WORD 0x0004 /* Dest xfer size, 10 = word */
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#define MCFDMA_DCR_DSIZE_LINE 0x0006 /* Dest xfer size, 11 = line */
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#define MCFDMA_DCR_START 0x0001 /* Start transfer */
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/*
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* Bit definitions for the DMA Status Register (DSR).
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*/
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#define MCFDMA_DSR_CE 0x40 /* Config error */
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#define MCFDMA_DSR_BES 0x20 /* Bus Error on source */
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#define MCFDMA_DSR_BED 0x10 /* Bus Error on dest */
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#define MCFDMA_DSR_REQ 0x04 /* Requests remaining */
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#define MCFDMA_DSR_BSY 0x02 /* Busy */
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#define MCFDMA_DSR_DONE 0x01 /* DMA transfer complete */
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#else /* This is an MCF5272 */
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#define MCFDMA_DMR 0x00 /* Mode Register (r/w) */
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#define MCFDMA_DIR 0x03 /* Interrupt trigger register (r/w) */
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#define MCFDMA_DSAR 0x03 /* Source Address register (r/w) */
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#define MCFDMA_DDAR 0x04 /* Destination Address register (r/w) */
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#define MCFDMA_DBCR 0x02 /* Byte Count Register (r/w) */
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/* Bit definitions for the DMA Mode Register (DMR) */
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#define MCFDMA_DMR_RESET 0x80000000L /* Reset bit */
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#define MCFDMA_DMR_EN 0x40000000L /* DMA enable */
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#define MCFDMA_DMR_RQM 0x000C0000L /* Request Mode Mask */
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#define MCFDMA_DMR_RQM_DUAL 0x000C0000L /* Dual address mode, the only valid mode */
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#define MCFDMA_DMR_DSTM 0x00002000L /* Destination addressing mask */
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#define MCFDMA_DMR_DSTM_SA 0x00000000L /* Destination uses static addressing */
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#define MCFDMA_DMR_DSTM_IA 0x00002000L /* Destination uses incremental addressing */
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#define MCFDMA_DMR_DSTT_UD 0x00000400L /* Destination is user data */
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#define MCFDMA_DMR_DSTT_UC 0x00000800L /* Destination is user code */
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#define MCFDMA_DMR_DSTT_SD 0x00001400L /* Destination is supervisor data */
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#define MCFDMA_DMR_DSTT_SC 0x00001800L /* Destination is supervisor code */
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#define MCFDMA_DMR_DSTS_OFF 0x8 /* offset to the destination size bits */
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#define MCFDMA_DMR_DSTS_LONG 0x00000000L /* Long destination size */
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#define MCFDMA_DMR_DSTS_BYTE 0x00000100L /* Byte destination size */
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#define MCFDMA_DMR_DSTS_WORD 0x00000200L /* Word destination size */
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#define MCFDMA_DMR_DSTS_LINE 0x00000300L /* Line destination size */
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#define MCFDMA_DMR_SRCM 0x00000020L /* Source addressing mask */
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#define MCFDMA_DMR_SRCM_SA 0x00000000L /* Source uses static addressing */
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#define MCFDMA_DMR_SRCM_IA 0x00000020L /* Source uses incremental addressing */
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#define MCFDMA_DMR_SRCT_UD 0x00000004L /* Source is user data */
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#define MCFDMA_DMR_SRCT_UC 0x00000008L /* Source is user code */
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#define MCFDMA_DMR_SRCT_SD 0x00000014L /* Source is supervisor data */
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#define MCFDMA_DMR_SRCT_SC 0x00000018L /* Source is supervisor code */
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#define MCFDMA_DMR_SRCS_OFF 0x0 /* Offset to the source size bits */
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#define MCFDMA_DMR_SRCS_LONG 0x00000000L /* Long source size */
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#define MCFDMA_DMR_SRCS_BYTE 0x00000001L /* Byte source size */
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#define MCFDMA_DMR_SRCS_WORD 0x00000002L /* Word source size */
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#define MCFDMA_DMR_SRCS_LINE 0x00000003L /* Line source size */
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/* Bit definitions for the DMA interrupt register (DIR) */
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#define MCFDMA_DIR_INVEN 0x1000 /* Invalid Combination interrupt enable */
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#define MCFDMA_DIR_ASCEN 0x0800 /* Address Sequence Complete (Completion) interrupt enable */
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#define MCFDMA_DIR_TEEN 0x0200 /* Transfer Error interrupt enable */
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#define MCFDMA_DIR_TCEN 0x0100 /* Transfer Complete (a bus transfer, that is) interrupt enable */
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#define MCFDMA_DIR_INV 0x0010 /* Invalid Combination */
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#define MCFDMA_DIR_ASC 0x0008 /* Address Sequence Complete (DMA Completion) */
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#define MCFDMA_DIR_TE 0x0002 /* Transfer Error */
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#define MCFDMA_DIR_TC 0x0001 /* Transfer Complete */
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#endif /* !defined(CONFIG_M5272) */
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/****************************************************************************/
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#endif /* mcfdma_h */
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