include/asm-mips64/serial.h

   1 /* $Id: serial.h,v 1.2 2000/01/17 23:32:47 ralf Exp $
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1999 by Ralf Baechle
   8  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   9  */
  10 #ifndef _ASM_SERIAL_H
  11 #define _ASM_SERIAL_H
  12
  13 #include <linux/config.h>
  14
  15 #include <asm/sn/sn0/ip27.h>
  16
  17 /*
  18  * This assumes you have a 1.8432 MHz clock for your UART.
  19  *
  20  * It'd be nice if someone built a serial card with a 24.576 MHz
  21  * clock, since the 16550A is capable of handling a top speed of 1.5
  22  * megabits/second; but this requires the faster clock.
  23  */
  24 #define BASE_BAUD (1843200 / 16)
  25
  26 /* Standard COM flags (except for COM4, because of the 8514 problem) */
  27 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  28
  29 /*
  30  * The IOC3 serials use a 22MHz clock rate with an additional divider by 3.
  31  */
  32 #define IOC3_BAUD (22000000 / (3*16))
  33 #define IOC3_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  34
  35 /* Let the compiler figure out the size.  */
  36 #define RS_TABLE_SIZE
  37
  38 #ifdef CONFIG_SGI_IP27
  39 #define _ORIGIN_SERIAL_INIT(int, base)                                  \
  40         { baud_base: IOC3_BAUD, irq: int, flags: IOC3_COM_FLAGS,        \
  41           iomem_base: (u8 *) base, iomem_reg_shift: 0,                  \
  42           io_type: SERIAL_IO_MEM }
  43 #define ORIGIN_SERIAL_PORT_DFNS                                         \
  44         _ORIGIN_SERIAL_INIT(0, 0x9200000008620178UL),                   \
  45         _ORIGIN_SERIAL_INIT(0, 0x9200000008620170UL),
  46
  47 #else
  48 #define ORIGIN_SERIAL_PORT_DFNS
  49 #endif
  50
  51 #define SERIAL_PORT_DFNS                                                \
  52         ORIGIN_SERIAL_PORT_DFNS
  53
  54 #endif /* _ASM_SERIAL_H */