Linux kernel mirror (for testing)
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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#define SERIAL_PORT_DFNS \
39 /* UART CLK PORT IRQ FLAGS */ \
40 { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \
41 { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \
42 { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \
43 { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */