include/asm-ppc/pc_serial.h

   1 /*
   2  * include/asm-ppc/pc_serial.h
   3  *
   4  * This is basically a copy of include/asm-i386/serial.h.
   5  * It is used on platforms which have an ISA bus and thus are likely
   6  * to have PC-style serial ports at the legacy I/O port addresses.
   7  * It also includes the definitions for the fourport, accent, boca
   8  * and hub6 multiport serial cards, although I have never heard of
   9  * anyone using any of those on a PPC platform.  -- paulus
  10  */
  11
  12 #include <linux/config.h>
  13
  14 /*
  15  * This assumes you have a 1.8432 MHz clock for your UART.
  16  *
  17  * It'd be nice if someone built a serial card with a 24.576 MHz
  18  * clock, since the 16550A is capable of handling a top speed of 1.5
  19  * megabits/second; but this requires the faster clock.
  20  */
  21 #define BASE_BAUD ( 1843200 / 16 )
  22
  23 #ifdef CONFIG_SERIAL_MANY_PORTS
  24 #define RS_TABLE_SIZE  64
  25 #else
  26 #define RS_TABLE_SIZE  4
  27 #endif
  28
  29 /* Standard COM flags (except for COM4, because of the 8514 problem) */
  30 #ifdef CONFIG_SERIAL_DETECT_IRQ
  31 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
  32 #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
  33 #else
  34 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  35 #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
  36 #endif
  37
  38 #ifdef CONFIG_SERIAL_MANY_PORTS
  39 #define FOURPORT_FLAGS ASYNC_FOURPORT
  40 #define ACCENT_FLAGS 0
  41 #define BOCA_FLAGS 0
  42 #define HUB6_FLAGS 0
  43 #endif
  44
  45 /*
  46  * The following define the access methods for the HUB6 card. All
  47  * access is through two ports for all 24 possible chips. The card is
  48  * selected through the high 2 bits, the port on that card with the
  49  * "middle" 3 bits, and the register on that port with the bottom
  50  * 3 bits.
  51  *
  52  * While the access port and interrupt is configurable, the default
  53  * port locations are 0x302 for the port control register, and 0x303
  54  * for the data read/write register. Normally, the interrupt is at irq3
  55  * but can be anything from 3 to 7 inclusive. Note that using 3 will
  56  * require disabling com2.
  57  */
  58
  59 #define C_P(card,port) (((card)<<6|(port)<<3) + 1)
  60
  61 #define STD_SERIAL_PORT_DEFNS                   \
  62         /* UART CLK   PORT IRQ     FLAGS        */                      \
  63         { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },      /* ttyS0 */     \
  64         { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },      /* ttyS1 */     \
  65         { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },      /* ttyS2 */     \
  66         { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },     /* ttyS3 */
  67
  68
  69 #ifdef CONFIG_SERIAL_MANY_PORTS
  70 #define EXTRA_SERIAL_PORT_DEFNS                 \
  71         { 0, BASE_BAUD, 0x1A0, 9, FOURPORT_FLAGS },     /* ttyS4 */     \
  72         { 0, BASE_BAUD, 0x1A8, 9, FOURPORT_FLAGS },     /* ttyS5 */     \
  73         { 0, BASE_BAUD, 0x1B0, 9, FOURPORT_FLAGS },     /* ttyS6 */     \
  74         { 0, BASE_BAUD, 0x1B8, 9, FOURPORT_FLAGS },     /* ttyS7 */     \
  75         { 0, BASE_BAUD, 0x2A0, 5, FOURPORT_FLAGS },     /* ttyS8 */     \
  76         { 0, BASE_BAUD, 0x2A8, 5, FOURPORT_FLAGS },     /* ttyS9 */     \
  77         { 0, BASE_BAUD, 0x2B0, 5, FOURPORT_FLAGS },     /* ttyS10 */    \
  78         { 0, BASE_BAUD, 0x2B8, 5, FOURPORT_FLAGS },     /* ttyS11 */    \
  79         { 0, BASE_BAUD, 0x330, 4, ACCENT_FLAGS },       /* ttyS12 */    \
  80         { 0, BASE_BAUD, 0x338, 4, ACCENT_FLAGS },       /* ttyS13 */    \
  81         { 0, BASE_BAUD, 0x000, 0, 0 },  /* ttyS14 (spare) */            \
  82         { 0, BASE_BAUD, 0x000, 0, 0 },  /* ttyS15 (spare) */            \
  83         { 0, BASE_BAUD, 0x100, 12, BOCA_FLAGS },        /* ttyS16 */    \
  84         { 0, BASE_BAUD, 0x108, 12, BOCA_FLAGS },        /* ttyS17 */    \
  85         { 0, BASE_BAUD, 0x110, 12, BOCA_FLAGS },        /* ttyS18 */    \
  86         { 0, BASE_BAUD, 0x118, 12, BOCA_FLAGS },        /* ttyS19 */    \
  87         { 0, BASE_BAUD, 0x120, 12, BOCA_FLAGS },        /* ttyS20 */    \
  88         { 0, BASE_BAUD, 0x128, 12, BOCA_FLAGS },        /* ttyS21 */    \
  89         { 0, BASE_BAUD, 0x130, 12, BOCA_FLAGS },        /* ttyS22 */    \
  90         { 0, BASE_BAUD, 0x138, 12, BOCA_FLAGS },        /* ttyS23 */    \
  91         { 0, BASE_BAUD, 0x140, 12, BOCA_FLAGS },        /* ttyS24 */    \
  92         { 0, BASE_BAUD, 0x148, 12, BOCA_FLAGS },        /* ttyS25 */    \
  93         { 0, BASE_BAUD, 0x150, 12, BOCA_FLAGS },        /* ttyS26 */    \
  94         { 0, BASE_BAUD, 0x158, 12, BOCA_FLAGS },        /* ttyS27 */    \
  95         { 0, BASE_BAUD, 0x160, 12, BOCA_FLAGS },        /* ttyS28 */    \
  96         { 0, BASE_BAUD, 0x168, 12, BOCA_FLAGS },        /* ttyS29 */    \
  97         { 0, BASE_BAUD, 0x170, 12, BOCA_FLAGS },        /* ttyS30 */    \
  98         { 0, BASE_BAUD, 0x178, 12, BOCA_FLAGS },        /* ttyS31 */
  99 #else
 100 #define EXTRA_SERIAL_PORT_DEFNS
 101 #endif
 102
 103 /* You can have up to four HUB6's in the system, but I've only
 104  * included two cards here for a total of twelve ports.
 105  */
 106 #if (defined(CONFIG_HUB6) && defined(CONFIG_SERIAL_MANY_PORTS))
 107 #define HUB6_SERIAL_PORT_DFNS           \
 108         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,0) },  /* ttyS32 */ \
 109         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,1) },  /* ttyS33 */ \
 110         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,2) },  /* ttyS34 */ \
 111         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,3) },  /* ttyS35 */ \
 112         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,4) },  /* ttyS36 */ \
 113         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,5) },  /* ttyS37 */ \
 114         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,0) },  /* ttyS38 */ \
 115         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,1) },  /* ttyS39 */ \
 116         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,2) },  /* ttyS40 */ \
 117         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,3) },  /* ttyS41 */ \
 118         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,4) },  /* ttyS42 */ \
 119         { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,5) },  /* ttyS43 */
 120 #else
 121 #define HUB6_SERIAL_PORT_DFNS
 122 #endif
 123
 124 #define SERIAL_PORT_DFNS                \
 125         STD_SERIAL_PORT_DEFNS           \
 126         EXTRA_SERIAL_PORT_DEFNS         \
 127         HUB6_SERIAL_PORT_DFNS