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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>
385 lines
12 KiB
C
385 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PMAC_ZILOG_H__
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#define __PMAC_ZILOG_H__
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/*
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* At most 2 ESCCs with 2 ports each
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*/
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#define MAX_ZS_PORTS 4
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/*
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* We wrap our port structure around the generic uart_port.
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*/
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#define NUM_ZSREGS 17
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struct uart_pmac_port {
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struct uart_port port;
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struct uart_pmac_port *mate;
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#ifdef CONFIG_PPC_PMAC
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/* macio_dev for the escc holding this port (maybe be null on
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* early inited port)
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*/
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struct macio_dev *dev;
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/* device node to this port, this points to one of 2 childs
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* of "escc" node (ie. ch-a or ch-b)
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*/
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struct device_node *node;
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#else
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struct platform_device *pdev;
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#endif
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/* Port type as obtained from device tree (IRDA, modem, ...) */
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int port_type;
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u8 curregs[NUM_ZSREGS];
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unsigned int flags;
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#define PMACZILOG_FLAG_IS_CONS 0x00000001
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#define PMACZILOG_FLAG_IS_KGDB 0x00000002
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#define PMACZILOG_FLAG_MODEM_STATUS 0x00000004
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#define PMACZILOG_FLAG_IS_CHANNEL_A 0x00000008
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#define PMACZILOG_FLAG_REGS_HELD 0x00000010
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#define PMACZILOG_FLAG_TX_STOPPED 0x00000020
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#define PMACZILOG_FLAG_TX_ACTIVE 0x00000040
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#define PMACZILOG_FLAG_IS_IRDA 0x00000100
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#define PMACZILOG_FLAG_IS_INTMODEM 0x00000200
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#define PMACZILOG_FLAG_HAS_DMA 0x00000400
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#define PMACZILOG_FLAG_RSRC_REQUESTED 0x00000800
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#define PMACZILOG_FLAG_IS_OPEN 0x00002000
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#define PMACZILOG_FLAG_IS_EXTCLK 0x00008000
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#define PMACZILOG_FLAG_BREAK 0x00010000
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unsigned char parity_mask;
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unsigned char prev_status;
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volatile u8 __iomem *control_reg;
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volatile u8 __iomem *data_reg;
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#ifdef CONFIG_PPC_PMAC
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unsigned int tx_dma_irq;
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unsigned int rx_dma_irq;
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volatile struct dbdma_regs __iomem *tx_dma_regs;
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volatile struct dbdma_regs __iomem *rx_dma_regs;
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#endif
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unsigned char irq_name[8];
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struct ktermios termios_cache;
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};
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#define to_pmz(p) ((struct uart_pmac_port *)(p))
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static inline struct uart_pmac_port *pmz_get_port_A(struct uart_pmac_port *uap)
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{
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if (uap->flags & PMACZILOG_FLAG_IS_CHANNEL_A)
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return uap;
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return uap->mate;
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}
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/*
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* Register accessors. Note that we don't need to enforce a recovery
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* delay on PCI PowerMac hardware, it's dealt in HW by the MacIO chip,
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* though if we try to use this driver on older machines, we might have
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* to add it back
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*/
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static inline u8 read_zsreg(struct uart_pmac_port *port, u8 reg)
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{
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if (reg != 0)
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writeb(reg, port->control_reg);
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return readb(port->control_reg);
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}
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static inline void write_zsreg(struct uart_pmac_port *port, u8 reg, u8 value)
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{
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if (reg != 0)
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writeb(reg, port->control_reg);
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writeb(value, port->control_reg);
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}
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static inline u8 read_zsdata(struct uart_pmac_port *port)
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{
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return readb(port->data_reg);
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}
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static inline void write_zsdata(struct uart_pmac_port *port, u8 data)
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{
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writeb(data, port->data_reg);
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}
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static inline void zssync(struct uart_pmac_port *port)
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{
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(void)readb(port->control_reg);
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}
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/* Conversion routines to/from brg time constants from/to bits
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* per second.
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*/
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#define BRG_TO_BPS(brg, freq) ((freq) / 2 / ((brg) + 2))
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#define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
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#define ZS_CLOCK 3686400 /* Z8530 RTxC input clock rate */
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/* The Zilog register set */
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#define FLAG 0x7e
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/* Write Register 0 */
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#define R0 0 /* Register selects */
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#define R1 1
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#define R2 2
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#define R3 3
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#define R4 4
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#define R5 5
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#define R6 6
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#define R7 7
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#define R8 8
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#define R9 9
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#define R10 10
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#define R11 11
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#define R12 12
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#define R13 13
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#define R14 14
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#define R15 15
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#define R7P 16
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#define NULLCODE 0 /* Null Code */
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#define POINT_HIGH 0x8 /* Select upper half of registers */
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#define RES_EXT_INT 0x10 /* Reset Ext. Status Interrupts */
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#define SEND_ABORT 0x18 /* HDLC Abort */
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#define RES_RxINT_FC 0x20 /* Reset RxINT on First Character */
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#define RES_Tx_P 0x28 /* Reset TxINT Pending */
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#define ERR_RES 0x30 /* Error Reset */
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#define RES_H_IUS 0x38 /* Reset highest IUS */
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#define RES_Rx_CRC 0x40 /* Reset Rx CRC Checker */
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#define RES_Tx_CRC 0x80 /* Reset Tx CRC Checker */
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#define RES_EOM_L 0xC0 /* Reset EOM latch */
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/* Write Register 1 */
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#define EXT_INT_ENAB 0x1 /* Ext Int Enable */
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#define TxINT_ENAB 0x2 /* Tx Int Enable */
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#define PAR_SPEC 0x4 /* Parity is special condition */
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#define RxINT_DISAB 0 /* Rx Int Disable */
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#define RxINT_FCERR 0x8 /* Rx Int on First Character Only or Error */
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#define INT_ALL_Rx 0x10 /* Int on all Rx Characters or error */
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#define INT_ERR_Rx 0x18 /* Int on error only */
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#define RxINT_MASK 0x18
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#define WT_RDY_RT 0x20 /* W/Req reflects recv if 1, xmit if 0 */
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#define WT_FN_RDYFN 0x40 /* W/Req pin is DMA request if 1, wait if 0 */
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#define WT_RDY_ENAB 0x80 /* Enable W/Req pin */
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/* Write Register #2 (Interrupt Vector) */
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/* Write Register 3 */
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#define RxENABLE 0x1 /* Rx Enable */
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#define SYNC_L_INH 0x2 /* Sync Character Load Inhibit */
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#define ADD_SM 0x4 /* Address Search Mode (SDLC) */
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#define RxCRC_ENAB 0x8 /* Rx CRC Enable */
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#define ENT_HM 0x10 /* Enter Hunt Mode */
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#define AUTO_ENAB 0x20 /* Auto Enables */
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#define Rx5 0x0 /* Rx 5 Bits/Character */
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#define Rx7 0x40 /* Rx 7 Bits/Character */
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#define Rx6 0x80 /* Rx 6 Bits/Character */
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#define Rx8 0xc0 /* Rx 8 Bits/Character */
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#define RxN_MASK 0xc0
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/* Write Register 4 */
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#define PAR_ENAB 0x1 /* Parity Enable */
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#define PAR_EVEN 0x2 /* Parity Even/Odd* */
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#define SYNC_ENAB 0 /* Sync Modes Enable */
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#define SB1 0x4 /* 1 stop bit/char */
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#define SB15 0x8 /* 1.5 stop bits/char */
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#define SB2 0xc /* 2 stop bits/char */
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#define SB_MASK 0xc
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#define MONSYNC 0 /* 8 Bit Sync character */
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#define BISYNC 0x10 /* 16 bit sync character */
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#define SDLC 0x20 /* SDLC Mode (01111110 Sync Flag) */
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#define EXTSYNC 0x30 /* External Sync Mode */
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#define X1CLK 0x0 /* x1 clock mode */
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#define X16CLK 0x40 /* x16 clock mode */
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#define X32CLK 0x80 /* x32 clock mode */
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#define X64CLK 0xC0 /* x64 clock mode */
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#define XCLK_MASK 0xC0
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/* Write Register 5 */
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#define TxCRC_ENAB 0x1 /* Tx CRC Enable */
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#define RTS 0x2 /* RTS */
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#define SDLC_CRC 0x4 /* SDLC/CRC-16 */
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#define TxENABLE 0x8 /* Tx Enable */
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#define SND_BRK 0x10 /* Send Break */
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#define Tx5 0x0 /* Tx 5 bits (or less)/character */
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#define Tx7 0x20 /* Tx 7 bits/character */
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#define Tx6 0x40 /* Tx 6 bits/character */
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#define Tx8 0x60 /* Tx 8 bits/character */
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#define TxN_MASK 0x60
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#define DTR 0x80 /* DTR */
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/* Write Register 6 (Sync bits 0-7/SDLC Address Field) */
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/* Write Register 7 (Sync bits 8-15/SDLC 01111110) */
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/* Write Register 7' (Some enhanced feature control) */
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#define ENEXREAD 0x40 /* Enable read of some write registers */
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/* Write Register 8 (transmit buffer) */
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/* Write Register 9 (Master interrupt control) */
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#define VIS 1 /* Vector Includes Status */
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#define NV 2 /* No Vector */
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#define DLC 4 /* Disable Lower Chain */
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#define MIE 8 /* Master Interrupt Enable */
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#define STATHI 0x10 /* Status high */
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#define NORESET 0 /* No reset on write to R9 */
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#define CHRB 0x40 /* Reset channel B */
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#define CHRA 0x80 /* Reset channel A */
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#define FHWRES 0xc0 /* Force hardware reset */
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/* Write Register 10 (misc control bits) */
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#define BIT6 1 /* 6 bit/8bit sync */
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#define LOOPMODE 2 /* SDLC Loop mode */
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#define ABUNDER 4 /* Abort/flag on SDLC xmit underrun */
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#define MARKIDLE 8 /* Mark/flag on idle */
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#define GAOP 0x10 /* Go active on poll */
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#define NRZ 0 /* NRZ mode */
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#define NRZI 0x20 /* NRZI mode */
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#define FM1 0x40 /* FM1 (transition = 1) */
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#define FM0 0x60 /* FM0 (transition = 0) */
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#define CRCPS 0x80 /* CRC Preset I/O */
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/* Write Register 11 (Clock Mode control) */
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#define TRxCXT 0 /* TRxC = Xtal output */
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#define TRxCTC 1 /* TRxC = Transmit clock */
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#define TRxCBR 2 /* TRxC = BR Generator Output */
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#define TRxCDP 3 /* TRxC = DPLL output */
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#define TRxCOI 4 /* TRxC O/I */
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#define TCRTxCP 0 /* Transmit clock = RTxC pin */
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#define TCTRxCP 8 /* Transmit clock = TRxC pin */
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#define TCBR 0x10 /* Transmit clock = BR Generator output */
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#define TCDPLL 0x18 /* Transmit clock = DPLL output */
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#define RCRTxCP 0 /* Receive clock = RTxC pin */
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#define RCTRxCP 0x20 /* Receive clock = TRxC pin */
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#define RCBR 0x40 /* Receive clock = BR Generator output */
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#define RCDPLL 0x60 /* Receive clock = DPLL output */
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#define RTxCX 0x80 /* RTxC Xtal/No Xtal */
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/* Write Register 12 (lower byte of baud rate generator time constant) */
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/* Write Register 13 (upper byte of baud rate generator time constant) */
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/* Write Register 14 (Misc control bits) */
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#define BRENAB 1 /* Baud rate generator enable */
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#define BRSRC 2 /* Baud rate generator source */
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#define DTRREQ 4 /* DTR/Request function */
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#define AUTOECHO 8 /* Auto Echo */
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#define LOOPBAK 0x10 /* Local loopback */
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#define SEARCH 0x20 /* Enter search mode */
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#define RMC 0x40 /* Reset missing clock */
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#define DISDPLL 0x60 /* Disable DPLL */
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#define SSBR 0x80 /* Set DPLL source = BR generator */
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#define SSRTxC 0xa0 /* Set DPLL source = RTxC */
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#define SFMM 0xc0 /* Set FM mode */
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#define SNRZI 0xe0 /* Set NRZI mode */
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/* Write Register 15 (external/status interrupt control) */
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#define EN85C30 1 /* Enable some 85c30-enhanced registers */
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#define ZCIE 2 /* Zero count IE */
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#define ENSTFIFO 4 /* Enable status FIFO (SDLC) */
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#define DCDIE 8 /* DCD IE */
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#define SYNCIE 0x10 /* Sync/hunt IE */
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#define CTSIE 0x20 /* CTS IE */
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#define TxUIE 0x40 /* Tx Underrun/EOM IE */
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#define BRKIE 0x80 /* Break/Abort IE */
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/* Read Register 0 */
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#define Rx_CH_AV 0x1 /* Rx Character Available */
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#define ZCOUNT 0x2 /* Zero count */
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#define Tx_BUF_EMP 0x4 /* Tx Buffer empty */
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#define DCD 0x8 /* DCD */
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#define SYNC_HUNT 0x10 /* Sync/hunt */
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#define CTS 0x20 /* CTS */
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#define TxEOM 0x40 /* Tx underrun */
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#define BRK_ABRT 0x80 /* Break/Abort */
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/* Read Register 1 */
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#define ALL_SNT 0x1 /* All sent */
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/* Residue Data for 8 Rx bits/char programmed */
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#define RES3 0x8 /* 0/3 */
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#define RES4 0x4 /* 0/4 */
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#define RES5 0xc /* 0/5 */
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#define RES6 0x2 /* 0/6 */
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#define RES7 0xa /* 0/7 */
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#define RES8 0x6 /* 0/8 */
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#define RES18 0xe /* 1/8 */
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#define RES28 0x0 /* 2/8 */
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/* Special Rx Condition Interrupts */
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#define PAR_ERR 0x10 /* Parity error */
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#define Rx_OVR 0x20 /* Rx Overrun Error */
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#define CRC_ERR 0x40 /* CRC/Framing Error */
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#define END_FR 0x80 /* End of Frame (SDLC) */
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/* Read Register 2 (channel b only) - Interrupt vector */
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#define CHB_Tx_EMPTY 0x00
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#define CHB_EXT_STAT 0x02
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#define CHB_Rx_AVAIL 0x04
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#define CHB_SPECIAL 0x06
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#define CHA_Tx_EMPTY 0x08
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#define CHA_EXT_STAT 0x0a
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#define CHA_Rx_AVAIL 0x0c
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#define CHA_SPECIAL 0x0e
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#define STATUS_MASK 0x06
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/* Read Register 3 (interrupt pending register) ch a only */
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#define CHBEXT 0x1 /* Channel B Ext/Stat IP */
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#define CHBTxIP 0x2 /* Channel B Tx IP */
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#define CHBRxIP 0x4 /* Channel B Rx IP */
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#define CHAEXT 0x8 /* Channel A Ext/Stat IP */
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#define CHATxIP 0x10 /* Channel A Tx IP */
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#define CHARxIP 0x20 /* Channel A Rx IP */
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/* Read Register 8 (receive data register) */
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/* Read Register 10 (misc status bits) */
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#define ONLOOP 2 /* On loop */
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#define LOOPSEND 0x10 /* Loop sending */
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#define CLK2MIS 0x40 /* Two clocks missing */
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#define CLK1MIS 0x80 /* One clock missing */
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/* Read Register 12 (lower byte of baud rate generator constant) */
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/* Read Register 13 (upper byte of baud rate generator constant) */
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/* Read Register 15 (value of WR 15) */
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/* Misc macros */
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#define ZS_CLEARERR(port) (write_zsreg(port, 0, ERR_RES))
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#define ZS_CLEARFIFO(port) do { volatile unsigned char garbage; \
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garbage = read_zsdata(port); \
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garbage = read_zsdata(port); \
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garbage = read_zsdata(port); \
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} while(0)
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#define ZS_IS_CONS(UP) ((UP)->flags & PMACZILOG_FLAG_IS_CONS)
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#define ZS_IS_KGDB(UP) ((UP)->flags & PMACZILOG_FLAG_IS_KGDB)
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#define ZS_IS_CHANNEL_A(UP) ((UP)->flags & PMACZILOG_FLAG_IS_CHANNEL_A)
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#define ZS_REGS_HELD(UP) ((UP)->flags & PMACZILOG_FLAG_REGS_HELD)
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#define ZS_TX_STOPPED(UP) ((UP)->flags & PMACZILOG_FLAG_TX_STOPPED)
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#define ZS_TX_ACTIVE(UP) ((UP)->flags & PMACZILOG_FLAG_TX_ACTIVE)
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#define ZS_WANTS_MODEM_STATUS(UP) ((UP)->flags & PMACZILOG_FLAG_MODEM_STATUS)
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#define ZS_IS_IRDA(UP) ((UP)->flags & PMACZILOG_FLAG_IS_IRDA)
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#define ZS_IS_INTMODEM(UP) ((UP)->flags & PMACZILOG_FLAG_IS_INTMODEM)
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#define ZS_HAS_DMA(UP) ((UP)->flags & PMACZILOG_FLAG_HAS_DMA)
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#define ZS_IS_OPEN(UP) ((UP)->flags & PMACZILOG_FLAG_IS_OPEN)
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#define ZS_IS_EXTCLK(UP) ((UP)->flags & PMACZILOG_FLAG_IS_EXTCLK)
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#endif /* __PMAC_ZILOG_H__ */
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