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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#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