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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>
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef GRETH_H
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#define GRETH_H
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#include <linux/phy.h>
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/* Register bits and masks */
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#define GRETH_RESET 0x40
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#define GRETH_MII_BUSY 0x8
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#define GRETH_MII_NVALID 0x10
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#define GRETH_CTRL_FD 0x10
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#define GRETH_CTRL_PR 0x20
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#define GRETH_CTRL_SP 0x80
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#define GRETH_CTRL_GB 0x100
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#define GRETH_CTRL_PSTATIEN 0x400
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#define GRETH_CTRL_MCEN 0x800
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#define GRETH_CTRL_DISDUPLEX 0x1000
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#define GRETH_STATUS_PHYSTAT 0x100
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#define GRETH_BD_EN 0x800
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#define GRETH_BD_WR 0x1000
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#define GRETH_BD_IE 0x2000
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#define GRETH_BD_LEN 0x7FF
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#define GRETH_TXEN 0x1
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#define GRETH_INT_TE 0x2
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#define GRETH_INT_TX 0x8
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#define GRETH_TXI 0x4
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#define GRETH_TXBD_STATUS 0x0001C000
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#define GRETH_TXBD_MORE 0x20000
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#define GRETH_TXBD_IPCS 0x40000
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#define GRETH_TXBD_TCPCS 0x80000
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#define GRETH_TXBD_UDPCS 0x100000
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#define GRETH_TXBD_CSALL (GRETH_TXBD_IPCS | GRETH_TXBD_TCPCS | GRETH_TXBD_UDPCS)
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#define GRETH_TXBD_ERR_LC 0x10000
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#define GRETH_TXBD_ERR_UE 0x4000
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#define GRETH_TXBD_ERR_AL 0x8000
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#define GRETH_INT_RE 0x1
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#define GRETH_INT_RX 0x4
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#define GRETH_RXEN 0x2
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#define GRETH_RXI 0x8
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#define GRETH_RXBD_STATUS 0xFFFFC000
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#define GRETH_RXBD_ERR_AE 0x4000
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#define GRETH_RXBD_ERR_FT 0x8000
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#define GRETH_RXBD_ERR_CRC 0x10000
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#define GRETH_RXBD_ERR_OE 0x20000
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#define GRETH_RXBD_ERR_LE 0x40000
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#define GRETH_RXBD_IP 0x80000
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#define GRETH_RXBD_IP_CSERR 0x100000
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#define GRETH_RXBD_UDP 0x200000
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#define GRETH_RXBD_UDP_CSERR 0x400000
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#define GRETH_RXBD_TCP 0x800000
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#define GRETH_RXBD_TCP_CSERR 0x1000000
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#define GRETH_RXBD_IP_FRAG 0x2000000
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#define GRETH_RXBD_MCAST 0x4000000
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/* Descriptor parameters */
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#define GRETH_TXBD_NUM 128
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#define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)
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#define GRETH_TX_BUF_SIZE 2048
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#define GRETH_RXBD_NUM 128
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#define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)
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#define GRETH_RX_BUF_SIZE 2048
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/* Buffers per page */
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#define GRETH_RX_BUF_PPGAE (PAGE_SIZE/GRETH_RX_BUF_SIZE)
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#define GRETH_TX_BUF_PPGAE (PAGE_SIZE/GRETH_TX_BUF_SIZE)
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/* How many pages are needed for buffers */
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#define GRETH_RX_BUF_PAGE_NUM (GRETH_RXBD_NUM/GRETH_RX_BUF_PPGAE)
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#define GRETH_TX_BUF_PAGE_NUM (GRETH_TXBD_NUM/GRETH_TX_BUF_PPGAE)
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/* Buffer size.
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* Gbit MAC uses tagged maximum frame size which is 1518 excluding CRC.
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* Set to 1520 to make all buffers word aligned for non-gbit MAC.
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*/
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#define MAX_FRAME_SIZE 1520
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/* GRETH APB registers */
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struct greth_regs {
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u32 control;
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u32 status;
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u32 esa_msb;
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u32 esa_lsb;
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u32 mdio;
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u32 tx_desc_p;
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u32 rx_desc_p;
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u32 edclip;
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u32 hash_msb;
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u32 hash_lsb;
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};
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/* GRETH buffer descriptor */
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struct greth_bd {
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u32 stat;
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u32 addr;
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};
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struct greth_private {
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struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
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struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];
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unsigned char *tx_bufs[GRETH_TXBD_NUM];
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unsigned char *rx_bufs[GRETH_RXBD_NUM];
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u16 tx_bufs_length[GRETH_TXBD_NUM];
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u16 tx_next;
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u16 tx_last;
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u16 tx_free; /* only used on 10/100Mbit */
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u16 rx_cur;
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struct greth_regs *regs; /* Address of controller registers. */
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struct greth_bd *rx_bd_base; /* Address of Rx BDs. */
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struct greth_bd *tx_bd_base; /* Address of Tx BDs. */
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dma_addr_t rx_bd_base_phys;
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dma_addr_t tx_bd_base_phys;
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int irq;
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struct device *dev; /* Pointer to platform_device->dev */
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struct net_device *netdev;
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struct napi_struct napi;
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spinlock_t devlock;
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struct mii_bus *mdio;
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unsigned int link;
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unsigned int speed;
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unsigned int duplex;
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u32 msg_enable;
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u8 phyaddr;
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u8 multicast;
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u8 gbit_mac;
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u8 mdio_int_en;
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u8 edcl;
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};
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#endif
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