mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
307 lines
9.8 KiB
C
307 lines
9.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef B43_DMA_H_
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#define B43_DMA_H_
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#include <linux/err.h>
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#include "b43.h"
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/* DMA-Interrupt reasons. */
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#define B43_DMAIRQ_FATALMASK ((1 << 10) | (1 << 11) | (1 << 12) \
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| (1 << 14) | (1 << 15))
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#define B43_DMAIRQ_RDESC_UFLOW (1 << 13)
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#define B43_DMAIRQ_RX_DONE (1 << 16)
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/*** 32-bit DMA Engine. ***/
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/* 32-bit DMA controller registers. */
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#define B43_DMA32_TXCTL 0x00
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#define B43_DMA32_TXENABLE 0x00000001
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#define B43_DMA32_TXSUSPEND 0x00000002
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#define B43_DMA32_TXLOOPBACK 0x00000004
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#define B43_DMA32_TXFLUSH 0x00000010
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#define B43_DMA32_TXPARITYDISABLE 0x00000800
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#define B43_DMA32_TXADDREXT_MASK 0x00030000
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#define B43_DMA32_TXADDREXT_SHIFT 16
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#define B43_DMA32_TXRING 0x04
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#define B43_DMA32_TXINDEX 0x08
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#define B43_DMA32_TXSTATUS 0x0C
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#define B43_DMA32_TXDPTR 0x00000FFF
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#define B43_DMA32_TXSTATE 0x0000F000
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#define B43_DMA32_TXSTAT_DISABLED 0x00000000
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#define B43_DMA32_TXSTAT_ACTIVE 0x00001000
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#define B43_DMA32_TXSTAT_IDLEWAIT 0x00002000
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#define B43_DMA32_TXSTAT_STOPPED 0x00003000
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#define B43_DMA32_TXSTAT_SUSP 0x00004000
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#define B43_DMA32_TXERROR 0x000F0000
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#define B43_DMA32_TXERR_NOERR 0x00000000
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#define B43_DMA32_TXERR_PROT 0x00010000
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#define B43_DMA32_TXERR_UNDERRUN 0x00020000
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#define B43_DMA32_TXERR_BUFREAD 0x00030000
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#define B43_DMA32_TXERR_DESCREAD 0x00040000
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#define B43_DMA32_TXACTIVE 0xFFF00000
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#define B43_DMA32_RXCTL 0x10
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#define B43_DMA32_RXENABLE 0x00000001
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#define B43_DMA32_RXFROFF_MASK 0x000000FE
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#define B43_DMA32_RXFROFF_SHIFT 1
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#define B43_DMA32_RXDIRECTFIFO 0x00000100
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#define B43_DMA32_RXPARITYDISABLE 0x00000800
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#define B43_DMA32_RXADDREXT_MASK 0x00030000
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#define B43_DMA32_RXADDREXT_SHIFT 16
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#define B43_DMA32_RXRING 0x14
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#define B43_DMA32_RXINDEX 0x18
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#define B43_DMA32_RXSTATUS 0x1C
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#define B43_DMA32_RXDPTR 0x00000FFF
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#define B43_DMA32_RXSTATE 0x0000F000
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#define B43_DMA32_RXSTAT_DISABLED 0x00000000
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#define B43_DMA32_RXSTAT_ACTIVE 0x00001000
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#define B43_DMA32_RXSTAT_IDLEWAIT 0x00002000
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#define B43_DMA32_RXSTAT_STOPPED 0x00003000
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#define B43_DMA32_RXERROR 0x000F0000
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#define B43_DMA32_RXERR_NOERR 0x00000000
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#define B43_DMA32_RXERR_PROT 0x00010000
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#define B43_DMA32_RXERR_OVERFLOW 0x00020000
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#define B43_DMA32_RXERR_BUFWRITE 0x00030000
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#define B43_DMA32_RXERR_DESCREAD 0x00040000
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#define B43_DMA32_RXACTIVE 0xFFF00000
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/* 32-bit DMA descriptor. */
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struct b43_dmadesc32 {
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__le32 control;
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__le32 address;
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} __packed;
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#define B43_DMA32_DCTL_BYTECNT 0x00001FFF
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#define B43_DMA32_DCTL_ADDREXT_MASK 0x00030000
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#define B43_DMA32_DCTL_ADDREXT_SHIFT 16
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#define B43_DMA32_DCTL_DTABLEEND 0x10000000
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#define B43_DMA32_DCTL_IRQ 0x20000000
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#define B43_DMA32_DCTL_FRAMEEND 0x40000000
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#define B43_DMA32_DCTL_FRAMESTART 0x80000000
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/*** 64-bit DMA Engine. ***/
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/* 64-bit DMA controller registers. */
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#define B43_DMA64_TXCTL 0x00
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#define B43_DMA64_TXENABLE 0x00000001
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#define B43_DMA64_TXSUSPEND 0x00000002
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#define B43_DMA64_TXLOOPBACK 0x00000004
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#define B43_DMA64_TXFLUSH 0x00000010
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#define B43_DMA64_TXPARITYDISABLE 0x00000800
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#define B43_DMA64_TXADDREXT_MASK 0x00030000
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#define B43_DMA64_TXADDREXT_SHIFT 16
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#define B43_DMA64_TXINDEX 0x04
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#define B43_DMA64_TXRINGLO 0x08
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#define B43_DMA64_TXRINGHI 0x0C
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#define B43_DMA64_TXSTATUS 0x10
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#define B43_DMA64_TXSTATDPTR 0x00001FFF
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#define B43_DMA64_TXSTAT 0xF0000000
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#define B43_DMA64_TXSTAT_DISABLED 0x00000000
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#define B43_DMA64_TXSTAT_ACTIVE 0x10000000
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#define B43_DMA64_TXSTAT_IDLEWAIT 0x20000000
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#define B43_DMA64_TXSTAT_STOPPED 0x30000000
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#define B43_DMA64_TXSTAT_SUSP 0x40000000
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#define B43_DMA64_TXERROR 0x14
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#define B43_DMA64_TXERRDPTR 0x0001FFFF
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#define B43_DMA64_TXERR 0xF0000000
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#define B43_DMA64_TXERR_NOERR 0x00000000
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#define B43_DMA64_TXERR_PROT 0x10000000
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#define B43_DMA64_TXERR_UNDERRUN 0x20000000
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#define B43_DMA64_TXERR_TRANSFER 0x30000000
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#define B43_DMA64_TXERR_DESCREAD 0x40000000
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#define B43_DMA64_TXERR_CORE 0x50000000
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#define B43_DMA64_RXCTL 0x20
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#define B43_DMA64_RXENABLE 0x00000001
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#define B43_DMA64_RXFROFF_MASK 0x000000FE
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#define B43_DMA64_RXFROFF_SHIFT 1
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#define B43_DMA64_RXDIRECTFIFO 0x00000100
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#define B43_DMA64_RXPARITYDISABLE 0x00000800
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#define B43_DMA64_RXADDREXT_MASK 0x00030000
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#define B43_DMA64_RXADDREXT_SHIFT 16
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#define B43_DMA64_RXINDEX 0x24
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#define B43_DMA64_RXRINGLO 0x28
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#define B43_DMA64_RXRINGHI 0x2C
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#define B43_DMA64_RXSTATUS 0x30
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#define B43_DMA64_RXSTATDPTR 0x00001FFF
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#define B43_DMA64_RXSTAT 0xF0000000
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#define B43_DMA64_RXSTAT_DISABLED 0x00000000
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#define B43_DMA64_RXSTAT_ACTIVE 0x10000000
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#define B43_DMA64_RXSTAT_IDLEWAIT 0x20000000
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#define B43_DMA64_RXSTAT_STOPPED 0x30000000
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#define B43_DMA64_RXSTAT_SUSP 0x40000000
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#define B43_DMA64_RXERROR 0x34
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#define B43_DMA64_RXERRDPTR 0x0001FFFF
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#define B43_DMA64_RXERR 0xF0000000
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#define B43_DMA64_RXERR_NOERR 0x00000000
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#define B43_DMA64_RXERR_PROT 0x10000000
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#define B43_DMA64_RXERR_UNDERRUN 0x20000000
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#define B43_DMA64_RXERR_TRANSFER 0x30000000
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#define B43_DMA64_RXERR_DESCREAD 0x40000000
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#define B43_DMA64_RXERR_CORE 0x50000000
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/* 64-bit DMA descriptor. */
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struct b43_dmadesc64 {
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__le32 control0;
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__le32 control1;
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__le32 address_low;
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__le32 address_high;
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} __packed;
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#define B43_DMA64_DCTL0_DTABLEEND 0x10000000
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#define B43_DMA64_DCTL0_IRQ 0x20000000
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#define B43_DMA64_DCTL0_FRAMEEND 0x40000000
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#define B43_DMA64_DCTL0_FRAMESTART 0x80000000
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#define B43_DMA64_DCTL1_BYTECNT 0x00001FFF
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#define B43_DMA64_DCTL1_ADDREXT_MASK 0x00030000
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#define B43_DMA64_DCTL1_ADDREXT_SHIFT 16
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struct b43_dmadesc_generic {
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union {
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struct b43_dmadesc32 dma32;
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struct b43_dmadesc64 dma64;
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} __packed;
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} __packed;
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/* Misc DMA constants */
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#define B43_DMA32_RINGMEMSIZE 4096
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#define B43_DMA64_RINGMEMSIZE 8192
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/* Offset of frame with actual data */
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#define B43_DMA0_RX_FW598_FO 38
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#define B43_DMA0_RX_FW351_FO 30
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/* DMA engine tuning knobs */
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#define B43_TXRING_SLOTS 256
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#define B43_RXRING_SLOTS 256
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#define B43_DMA0_RX_FW598_BUFSIZE (B43_DMA0_RX_FW598_FO + IEEE80211_MAX_FRAME_LEN)
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#define B43_DMA0_RX_FW351_BUFSIZE (B43_DMA0_RX_FW351_FO + IEEE80211_MAX_FRAME_LEN)
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/* Pointer poison */
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#define B43_DMA_PTR_POISON ((void *)ERR_PTR(-ENOMEM))
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#define b43_dma_ptr_is_poisoned(ptr) (unlikely((ptr) == B43_DMA_PTR_POISON))
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struct sk_buff;
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struct b43_private;
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struct b43_txstatus;
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struct b43_dmadesc_meta {
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/* The kernel DMA-able buffer. */
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struct sk_buff *skb;
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/* DMA base bus-address of the descriptor buffer. */
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dma_addr_t dmaaddr;
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/* ieee80211 TX status. Only used once per 802.11 frag. */
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bool is_last_fragment;
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};
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struct b43_dmaring;
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/* Lowlevel DMA operations that differ between 32bit and 64bit DMA. */
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struct b43_dma_ops {
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struct b43_dmadesc_generic *(*idx2desc) (struct b43_dmaring * ring,
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int slot,
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struct b43_dmadesc_meta **
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meta);
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void (*fill_descriptor) (struct b43_dmaring * ring,
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struct b43_dmadesc_generic * desc,
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dma_addr_t dmaaddr, u16 bufsize, int start,
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int end, int irq);
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void (*poke_tx) (struct b43_dmaring * ring, int slot);
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void (*tx_suspend) (struct b43_dmaring * ring);
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void (*tx_resume) (struct b43_dmaring * ring);
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int (*get_current_rxslot) (struct b43_dmaring * ring);
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void (*set_current_rxslot) (struct b43_dmaring * ring, int slot);
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};
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enum b43_dmatype {
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B43_DMA_30BIT = 30,
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B43_DMA_32BIT = 32,
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B43_DMA_64BIT = 64,
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};
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enum b43_addrtype {
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B43_DMA_ADDR_LOW,
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B43_DMA_ADDR_HIGH,
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B43_DMA_ADDR_EXT,
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};
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struct b43_dmaring {
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/* Lowlevel DMA ops. */
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const struct b43_dma_ops *ops;
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/* Kernel virtual base address of the ring memory. */
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void *descbase;
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/* Meta data about all descriptors. */
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struct b43_dmadesc_meta *meta;
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/* Cache of TX headers for each TX frame.
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* This is to avoid an allocation on each TX.
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* This is NULL for an RX ring.
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*/
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u8 *txhdr_cache;
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/* (Unadjusted) DMA base bus-address of the ring memory. */
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dma_addr_t dmabase;
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/* Number of descriptor slots in the ring. */
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int nr_slots;
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/* Number of used descriptor slots. */
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int used_slots;
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/* Currently used slot in the ring. */
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int current_slot;
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/* Frameoffset in octets. */
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u32 frameoffset;
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/* Descriptor buffer size. */
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u16 rx_buffersize;
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/* The MMIO base register of the DMA controller. */
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u16 mmio_base;
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/* DMA controller index number (0-5). */
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int index;
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/* Boolean. Is this a TX ring? */
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bool tx;
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/* The type of DMA engine used. */
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enum b43_dmatype type;
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/* Boolean. Is this ring stopped at ieee80211 level? */
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bool stopped;
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/* The QOS priority assigned to this ring. Only used for TX rings.
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* This is the mac80211 "queue" value. */
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u8 queue_prio;
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struct b43_wldev *dev;
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#ifdef CONFIG_B43_DEBUG
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/* Maximum number of used slots. */
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int max_used_slots;
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/* Last time we injected a ring overflow. */
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unsigned long last_injected_overflow;
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/* Statistics: Number of successfully transmitted packets */
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u64 nr_succeed_tx_packets;
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/* Statistics: Number of failed TX packets */
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u64 nr_failed_tx_packets;
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/* Statistics: Total number of TX plus all retries. */
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u64 nr_total_packet_tries;
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#endif /* CONFIG_B43_DEBUG */
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};
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static inline u32 b43_dma_read(struct b43_dmaring *ring, u16 offset)
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{
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return b43_read32(ring->dev, ring->mmio_base + offset);
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}
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static inline void b43_dma_write(struct b43_dmaring *ring, u16 offset, u32 value)
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{
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b43_write32(ring->dev, ring->mmio_base + offset, value);
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}
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int b43_dma_init(struct b43_wldev *dev);
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void b43_dma_free(struct b43_wldev *dev);
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void b43_dma_tx_suspend(struct b43_wldev *dev);
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void b43_dma_tx_resume(struct b43_wldev *dev);
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int b43_dma_tx(struct b43_wldev *dev,
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struct sk_buff *skb);
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void b43_dma_handle_txstatus(struct b43_wldev *dev,
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const struct b43_txstatus *status);
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void b43_dma_handle_rx_overflow(struct b43_dmaring *ring);
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void b43_dma_rx(struct b43_dmaring *ring);
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void b43_dma_direct_fifo_rx(struct b43_wldev *dev,
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unsigned int engine_index, bool enable);
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#endif /* B43_DMA_H_ */
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