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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>
216 lines
5.0 KiB
C
216 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* mac53c94.h: definitions for the driver for the 53c94 SCSI bus adaptor
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* found on Power Macintosh computers, controlling the external SCSI chain.
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*
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* Copyright (C) 1996 Paul Mackerras.
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*/
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#ifndef _MAC53C94_H
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#define _MAC53C94_H
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/*
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* Registers in the 53C94 controller.
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*/
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struct mac53c94_regs {
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unsigned char count_lo;
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char pad0[15];
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unsigned char count_mid;
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char pad1[15];
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unsigned char fifo;
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char pad2[15];
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unsigned char command;
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char pad3[15];
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unsigned char status;
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char pad4[15];
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unsigned char interrupt;
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char pad5[15];
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unsigned char seqstep;
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char pad6[15];
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unsigned char flags;
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char pad7[15];
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unsigned char config1;
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char pad8[15];
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unsigned char clk_factor;
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char pad9[15];
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unsigned char test;
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char pad10[15];
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unsigned char config2;
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char pad11[15];
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unsigned char config3;
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char pad12[15];
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unsigned char config4;
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char pad13[15];
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unsigned char count_hi;
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char pad14[15];
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unsigned char fifo_res;
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char pad15[15];
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};
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/*
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* Alternate functions for some registers.
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*/
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#define dest_id status
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#define sel_timeout interrupt
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#define sync_period seqstep
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#define sync_offset flags
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/*
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* Bits in command register.
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*/
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#define CMD_DMA_MODE 0x80
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#define CMD_MODE_MASK 0x70
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#define CMD_MODE_INIT 0x10
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#define CMD_MODE_TARG 0x20
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#define CMD_MODE_DISC 0x40
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#define CMD_NOP 0
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#define CMD_FLUSH 1
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#define CMD_RESET 2
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#define CMD_SCSI_RESET 3
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#define CMD_XFER_DATA 0x10
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#define CMD_I_COMPLETE 0x11
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#define CMD_ACCEPT_MSG 0x12
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#define CMD_XFER_PAD 0x18
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#define CMD_SET_ATN 0x1a
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#define CMD_CLR_ATN 0x1b
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#define CMD_SEND_MSG 0x20
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#define CMD_SEND_STATUS 0x21
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#define CMD_SEND_DATA 0x22
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#define CMD_DISC_SEQ 0x23
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#define CMD_TERMINATE 0x24
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#define CMD_T_COMPLETE 0x25
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#define CMD_DISCONNECT 0x27
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#define CMD_RECV_MSG 0x28
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#define CMD_RECV_CDB 0x29
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#define CMD_RECV_DATA 0x2a
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#define CMD_RECV_CMD 0x2b
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#define CMD_ABORT_DMA 0x04
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#define CMD_RESELECT 0x40
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#define CMD_SELECT 0x41
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#define CMD_SELECT_ATN 0x42
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#define CMD_SELATN_STOP 0x43
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#define CMD_ENABLE_SEL 0x44
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#define CMD_DISABLE_SEL 0x45
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#define CMD_SEL_ATN3 0x46
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#define CMD_RESEL_ATN3 0x47
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/*
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* Bits in status register.
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*/
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#define STAT_IRQ 0x80
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#define STAT_ERROR 0x40
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#define STAT_PARITY 0x20
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#define STAT_TC_ZERO 0x10
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#define STAT_DONE 0x08
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#define STAT_PHASE 0x07
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#define STAT_MSG 0x04
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#define STAT_CD 0x02
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#define STAT_IO 0x01
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/*
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* Bits in interrupt register.
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*/
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#define INTR_RESET 0x80 /* SCSI bus was reset */
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#define INTR_ILL_CMD 0x40 /* illegal command */
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#define INTR_DISCONNECT 0x20 /* we got disconnected */
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#define INTR_BUS_SERV 0x10 /* bus service requested */
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#define INTR_DONE 0x08 /* function completed */
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#define INTR_RESELECTED 0x04 /* we were reselected */
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#define INTR_SEL_ATN 0x02 /* we were selected, ATN asserted */
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#define INTR_SELECT 0x01 /* we were selected, ATN negated */
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/*
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* Encoding for the select timeout.
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*/
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#define TIMO_VAL(x) ((x) * 5000 / 7682)
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/*
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* Bits in sequence step register.
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*/
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#define SS_MASK 7
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#define SS_ARB_SEL 0 /* Selection & arbitration complete */
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#define SS_MSG_SENT 1 /* One message byte sent */
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#define SS_NOT_CMD 2 /* Not in command phase */
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#define SS_PHASE_CHG 3 /* Early phase change, cmd bytes lost */
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#define SS_DONE 4 /* Command was sent OK */
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/*
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* Encoding for sync transfer period.
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*/
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#define SYNCP_MASK 0x1f
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#define SYNCP_MIN 4
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#define SYNCP_MAX 31
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/*
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* Bits in flags register.
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*/
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#define FLAGS_FIFO_LEV 0x1f
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#define FLAGS_SEQ_STEP 0xe0
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/*
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* Encoding for sync offset.
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*/
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#define SYNCO_MASK 0x0f
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#define SYNCO_ASS_CTRL 0x30 /* REQ/ACK assertion control */
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#define SYNCO_NEG_CTRL 0xc0 /* REQ/ACK negation control */
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/*
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* Bits in config1 register.
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*/
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#define CF1_SLOW_CABLE 0x80 /* Slow cable mode */
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#define CF1_NO_RES_REP 0x40 /* Disable SCSI reset reports */
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#define CF1_PAR_TEST 0x20 /* Parity test mode enable */
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#define CF1_PAR_ENABLE 0x10 /* Enable parity checks */
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#define CF1_TEST 0x08 /* Chip tests */
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#define CF1_MY_ID 0x07 /* Controller's address on bus */
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/*
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* Encoding for clk_factor register.
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*/
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#define CLKF_MASK 7
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#define CLKF_VAL(freq) ((((freq) + 4999999) / 5000000) & CLKF_MASK)
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/*
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* Bits in test mode register.
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*/
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#define TEST_TARGET 1 /* target test mode */
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#define TEST_INITIATOR 2 /* initiator test mode */
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#define TEST_TRISTATE 4 /* tristate (hi-z) test mode */
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/*
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* Bits in config2 register.
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*/
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#define CF2_RFB 0x80
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#define CF2_FEATURE_EN 0x40 /* enable features / phase latch */
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#define CF2_BYTECTRL 0x20
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#define CF2_DREQ_HIZ 0x10
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#define CF2_SCSI2 0x08
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#define CF2_PAR_ABORT 0x04 /* bad parity target abort */
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#define CF2_REG_PARERR 0x02 /* register parity error */
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#define CF2_DMA_PARERR 0x01 /* DMA parity error */
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/*
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* Bits in the config3 register.
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*/
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#define CF3_ID_MSG_CHK 0x80
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#define CF3_3B_MSGS 0x40
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#define CF3_CDB10 0x20
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#define CF3_FASTSCSI 0x10 /* enable fast SCSI support */
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#define CF3_FASTCLOCK 0x08
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#define CF3_SAVERESID 0x04
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#define CF3_ALT_DMA 0x02
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#define CF3_THRESH_8 0x01
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/*
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* Bits in the config4 register.
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*/
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#define CF4_EAN 0x04
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#define CF4_TEST 0x02
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#define CF4_BBTE 0x01
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#endif /* _MAC53C94_H */
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