include/asm-mips/serial.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1999 by Ralf Baechle
   7  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   8  */
   9 #ifndef _ASM_SERIAL_H
  10 #define _ASM_SERIAL_H
  11
  12
  13 /*
  14  * This assumes you have a 1.8432 MHz clock for your UART.
  15  *
  16  * It'd be nice if someone built a serial card with a 24.576 MHz
  17  * clock, since the 16550A is capable of handling a top speed of 1.5
  18  * megabits/second; but this requires the faster clock.
  19  */
  20 #define BASE_BAUD (1843200 / 16)
  21
  22 /* Standard COM flags (except for COM4, because of the 8514 problem) */
  23 #ifdef CONFIG_SERIAL_DETECT_IRQ
  24 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
  25 #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
  26 #else
  27 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  28 #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
  29 #endif
  30
  31 #ifdef CONFIG_MACH_JAZZ
  32 #include <asm/jazz.h>
  33
  34 #ifndef CONFIG_OLIVETTI_M700
  35    /* Some Jazz machines seem to have an 8MHz crystal clock but I don't know
  36       exactly which ones ... XXX */
  37 #define JAZZ_BASE_BAUD ( 8000000 / 16 ) /* ( 3072000 / 16) */
  38 #else
  39 /* but the M700 isn't such a strange beast */
  40 #define JAZZ_BASE_BAUD BASE_BAUD
  41 #endif
  42
  43 #define _JAZZ_SERIAL_INIT(int, base)                                    \
  44         { .baud_base = JAZZ_BASE_BAUD, .irq = int, .flags = STD_COM_FLAGS,      \
  45           .iomem_base = (u8 *) base, .iomem_reg_shift = 0,                      \
  46           .io_type = SERIAL_IO_MEM }
  47 #define JAZZ_SERIAL_PORT_DEFNS                                          \
  48         _JAZZ_SERIAL_INIT(JAZZ_SERIAL1_IRQ, JAZZ_SERIAL1_BASE),         \
  49         _JAZZ_SERIAL_INIT(JAZZ_SERIAL2_IRQ, JAZZ_SERIAL2_BASE),
  50 #else
  51 #define JAZZ_SERIAL_PORT_DEFNS
  52 #endif
  53
  54 /*
  55  * Galileo EV64120 evaluation board
  56  */
  57 #ifdef CONFIG_MIPS_EV64120
  58 #include <mach-gt64120.h>
  59 #define EV64120_SERIAL_PORT_DEFNS                                  \
  60     { .baud_base = EV64120_BASE_BAUD, .irq = EV64120_UART_IRQ, \
  61       .flags = STD_COM_FLAGS,  \
  62       .iomem_base = EV64120_UART0_REGS_BASE, .iomem_reg_shift = 2, \
  63       .io_type = SERIAL_IO_MEM }, \
  64     { .baud_base = EV64120_BASE_BAUD, .irq = EV64120_UART_IRQ, \
  65       .flags = STD_COM_FLAGS, \
  66       .iomem_base = EV64120_UART1_REGS_BASE, .iomem_reg_shift = 2, \
  67       .io_type = SERIAL_IO_MEM },
  68 #else
  69 #define EV64120_SERIAL_PORT_DEFNS
  70 #endif
  71
  72 #ifdef CONFIG_HAVE_STD_PC_SERIAL_PORT
  73 #define STD_SERIAL_PORT_DEFNS                   \
  74         /* UART CLK   PORT IRQ     FLAGS        */                      \
  75         { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },      /* ttyS0 */     \
  76         { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },      /* ttyS1 */     \
  77         { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },      /* ttyS2 */     \
  78         { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },     /* ttyS3 */
  79
  80 #else /* CONFIG_HAVE_STD_PC_SERIAL_PORTS */
  81 #define STD_SERIAL_PORT_DEFNS
  82 #endif /* CONFIG_HAVE_STD_PC_SERIAL_PORTS */
  83
  84 #ifdef CONFIG_MOMENCO_OCELOT_3
  85 #define OCELOT_3_BASE_BAUD      ( 20000000 / 16 )
  86 #define OCELOT_3_SERIAL_IRQ     6
  87 #define OCELOT_3_SERIAL_BASE    (signed)0xfd000020
  88
  89 #define _OCELOT_3_SERIAL_INIT(int, base)                                \
  90         { .baud_base = OCELOT_3_BASE_BAUD, irq: int,                    \
  91           .flags = STD_COM_FLAGS,                                               \
  92           .iomem_base = (u8 *) base, iomem_reg_shift: 2,                        \
  93           io_type: SERIAL_IO_MEM }
  94
  95 #define MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS                              \
  96         _OCELOT_3_SERIAL_INIT(OCELOT_3_SERIAL_IRQ, OCELOT_3_SERIAL_BASE)
  97 #else
  98 #define MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS
  99 #endif
 100
 101 #ifdef CONFIG_MOMENCO_OCELOT
 102 /* Ordinary NS16552 duart with a 20MHz crystal.  */
 103 #define OCELOT_BASE_BAUD ( 20000000 / 16 )
 104
 105 #define OCELOT_SERIAL1_IRQ      4
 106 #define OCELOT_SERIAL1_BASE     0xe0001020
 107
 108 #define _OCELOT_SERIAL_INIT(int, base)                                  \
 109         { .baud_base = OCELOT_BASE_BAUD, .irq = int, .flags = STD_COM_FLAGS,    \
 110           .iomem_base = (u8 *) base, .iomem_reg_shift = 2,                      \
 111           .io_type = SERIAL_IO_MEM }
 112 #define MOMENCO_OCELOT_SERIAL_PORT_DEFNS                                \
 113         _OCELOT_SERIAL_INIT(OCELOT_SERIAL1_IRQ, OCELOT_SERIAL1_BASE)
 114 #else
 115 #define MOMENCO_OCELOT_SERIAL_PORT_DEFNS
 116 #endif
 117
 118 #ifdef CONFIG_MOMENCO_OCELOT_C
 119 /* Ordinary NS16552 duart with a 20MHz crystal.  */
 120 #define OCELOT_C_BASE_BAUD ( 20000000 / 16 )
 121
 122 #define OCELOT_C_SERIAL1_IRQ    80
 123 #define OCELOT_C_SERIAL1_BASE   0xfd000020
 124
 125 #define OCELOT_C_SERIAL2_IRQ    81
 126 #define OCELOT_C_SERIAL2_BASE   0xfd000000
 127
 128 #define _OCELOT_C_SERIAL_INIT(int, base)                                \
 129         { .baud_base            = OCELOT_C_BASE_BAUD,                   \
 130           .irq                  = (int),                                \
 131           .flags                = STD_COM_FLAGS,                        \
 132           .iomem_base           = (u8 *) base,                          \
 133           .iomem_reg_shift      = 2,                                    \
 134           .io_type              = SERIAL_IO_MEM                         \
 135          }
 136 #define MOMENCO_OCELOT_C_SERIAL_PORT_DEFNS                              \
 137         _OCELOT_C_SERIAL_INIT(OCELOT_C_SERIAL1_IRQ, OCELOT_C_SERIAL1_BASE), \
 138         _OCELOT_C_SERIAL_INIT(OCELOT_C_SERIAL2_IRQ, OCELOT_C_SERIAL2_BASE)
 139 #else
 140 #define MOMENCO_OCELOT_C_SERIAL_PORT_DEFNS
 141 #endif
 142
 143 #ifdef CONFIG_DDB5477
 144 #include <asm/ddb5xxx/ddb5477.h>
 145 #define DDB5477_SERIAL_PORT_DEFNS                                       \
 146         { .baud_base = BASE_BAUD, .irq = VRC5477_IRQ_UART0,             \
 147           .flags = STD_COM_FLAGS, .iomem_base = (u8*)0xbfa04200,        \
 148           .iomem_reg_shift = 3, .io_type = SERIAL_IO_MEM},              \
 149         { .baud_base = BASE_BAUD, .irq = VRC5477_IRQ_UART1,             \
 150           .flags = STD_COM_FLAGS, .iomem_base = (u8*)0xbfa04240,        \
 151           .iomem_reg_shift = 3, .io_type = SERIAL_IO_MEM},
 152 #else
 153 #define DDB5477_SERIAL_PORT_DEFNS
 154 #endif
 155
 156 #ifdef CONFIG_SGI_IP32
 157 /*
 158  * The IP32 (SGI O2) has standard serial ports (UART 16550A) mapped in memory
 159  * They are initialized in ip32_setup
 160  */
 161 #define IP32_SERIAL_PORT_DEFNS                          \
 162         {},{},
 163 #else
 164 #define IP32_SERIAL_PORT_DEFNS
 165 #endif /* CONFIG_SGI_IP32 */
 166
 167 #define SERIAL_PORT_DFNS                                \
 168         DDB5477_SERIAL_PORT_DEFNS                       \
 169         EV64120_SERIAL_PORT_DEFNS                       \
 170         IP32_SERIAL_PORT_DEFNS                          \
 171         JAZZ_SERIAL_PORT_DEFNS                          \
 172         STD_SERIAL_PORT_DEFNS                           \
 173         MOMENCO_OCELOT_C_SERIAL_PORT_DEFNS              \
 174         MOMENCO_OCELOT_SERIAL_PORT_DEFNS                \
 175         MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS
 176
 177 #endif /* _ASM_SERIAL_H */