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>
195 lines
5.2 KiB
C
195 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_SSB_DRIVER_GIGE_H_
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#define LINUX_SSB_DRIVER_GIGE_H_
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#include <linux/ssb/ssb.h>
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#include <linux/bug.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#ifdef CONFIG_SSB_DRIVER_GIGE
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#define SSB_GIGE_PCIIO 0x0000 /* PCI I/O Registers (1024 bytes) */
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#define SSB_GIGE_RESERVED 0x0400 /* Reserved (1024 bytes) */
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#define SSB_GIGE_PCICFG 0x0800 /* PCI config space (256 bytes) */
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#define SSB_GIGE_SHIM_FLUSHSTAT 0x0C00 /* PCI to OCP: Flush status control (32bit) */
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#define SSB_GIGE_SHIM_FLUSHRDA 0x0C04 /* PCI to OCP: Flush read address (32bit) */
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#define SSB_GIGE_SHIM_FLUSHTO 0x0C08 /* PCI to OCP: Flush timeout counter (32bit) */
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#define SSB_GIGE_SHIM_BARRIER 0x0C0C /* PCI to OCP: Barrier register (32bit) */
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#define SSB_GIGE_SHIM_MAOCPSI 0x0C10 /* PCI to OCP: MaocpSI Control (32bit) */
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#define SSB_GIGE_SHIM_SIOCPMA 0x0C14 /* PCI to OCP: SiocpMa Control (32bit) */
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/* TM Status High flags */
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#define SSB_GIGE_TMSHIGH_RGMII 0x00010000 /* Have an RGMII PHY-bus */
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/* TM Status Low flags */
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#define SSB_GIGE_TMSLOW_TXBYPASS 0x00080000 /* TX bypass (no delay) */
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#define SSB_GIGE_TMSLOW_RXBYPASS 0x00100000 /* RX bypass (no delay) */
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#define SSB_GIGE_TMSLOW_DLLEN 0x01000000 /* Enable DLL controls */
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/* Boardflags (low) */
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#define SSB_GIGE_BFL_ROBOSWITCH 0x0010
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#define SSB_GIGE_MEM_RES_NAME "SSB Broadcom 47xx GigE memory"
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#define SSB_GIGE_IO_RES_NAME "SSB Broadcom 47xx GigE I/O"
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struct ssb_gige {
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struct ssb_device *dev;
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spinlock_t lock;
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/* True, if the device has an RGMII bus.
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* False, if the device has a GMII bus. */
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bool has_rgmii;
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/* The PCI controller device. */
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struct pci_controller pci_controller;
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struct pci_ops pci_ops;
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struct resource mem_resource;
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struct resource io_resource;
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};
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/* Check whether a PCI device is a SSB Gigabit Ethernet core. */
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extern bool pdev_is_ssb_gige_core(struct pci_dev *pdev);
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/* Convert a pci_dev pointer to a ssb_gige pointer. */
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static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev)
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{
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if (!pdev_is_ssb_gige_core(pdev))
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return NULL;
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return container_of(pdev->bus->ops, struct ssb_gige, pci_ops);
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}
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/* Returns whether the PHY is connected by an RGMII bus. */
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static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev)
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{
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struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
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return (dev ? dev->has_rgmii : 0);
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}
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/* Returns whether we have a Roboswitch. */
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static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev)
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{
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struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
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if (dev)
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return !!(dev->dev->bus->sprom.boardflags_lo &
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SSB_GIGE_BFL_ROBOSWITCH);
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return 0;
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}
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/* Returns whether we can only do one DMA at once. */
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static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev)
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{
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struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
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if (dev)
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return ((dev->dev->bus->chip_id == 0x4785) &&
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(dev->dev->bus->chip_rev < 2));
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return 0;
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}
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/* Returns whether we must flush posted writes. */
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static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev)
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{
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struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
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if (dev)
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return (dev->dev->bus->chip_id == 0x4785);
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return 0;
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}
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/* Get the device MAC address */
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static inline int ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
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{
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struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
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if (!dev)
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return -ENODEV;
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memcpy(macaddr, dev->dev->bus->sprom.et0mac, 6);
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return 0;
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}
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/* Get the device phy address */
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static inline int ssb_gige_get_phyaddr(struct pci_dev *pdev)
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{
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struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
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if (!dev)
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return -ENODEV;
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return dev->dev->bus->sprom.et0phyaddr;
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}
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extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
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struct pci_dev *pdev);
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extern int ssb_gige_map_irq(struct ssb_device *sdev,
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const struct pci_dev *pdev);
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/* The GigE driver is not a standalone module, because we don't have support
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* for unregistering the driver. So we could not unload the module anyway. */
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extern int ssb_gige_init(void);
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static inline void ssb_gige_exit(void)
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{
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/* Currently we can not unregister the GigE driver,
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* because we can not unregister the PCI bridge. */
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BUG();
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}
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#else /* CONFIG_SSB_DRIVER_GIGE */
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/* Gigabit Ethernet driver disabled */
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static inline int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
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struct pci_dev *pdev)
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{
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return -ENOSYS;
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}
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static inline int ssb_gige_map_irq(struct ssb_device *sdev,
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const struct pci_dev *pdev)
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{
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return -ENOSYS;
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}
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static inline int ssb_gige_init(void)
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{
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return 0;
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}
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static inline void ssb_gige_exit(void)
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{
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}
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static inline bool pdev_is_ssb_gige_core(struct pci_dev *pdev)
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{
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return 0;
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}
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static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev)
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{
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return NULL;
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}
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static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev)
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{
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return 0;
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}
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static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev)
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{
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return 0;
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}
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static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev)
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{
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return 0;
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}
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static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev)
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{
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return 0;
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}
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static inline int ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
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{
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return -ENODEV;
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}
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static inline int ssb_gige_get_phyaddr(struct pci_dev *pdev)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_SSB_DRIVER_GIGE */
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#endif /* LINUX_SSB_DRIVER_GIGE_H_ */
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