1 /*
2 * m32r_sio_reg.h
3 *
4 * Copyright (C) 1992, 1994 by Theodore Ts'o.
5 * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org>
6 *
7 * Redistribution of this file is permitted under the terms of the GNU
8 * Public License (GPL)
9 *
10 * These are the UART port assignments, expressed as offsets from the base
11 * register. These assignments should hold for any serial port based on
12 * a 8250, 16450, or 16550(A).
13 */
14
15 #ifndef _M32R_SIO_REG_H
16 #define _M32R_SIO_REG_H
17
18
19 #ifdef CONFIG_SERIAL_M32R_PLDSIO
20
21 #define SIOCR 0x000
22 #define SIOMOD0 0x002
23 #define SIOMOD1 0x004
24 #define SIOSTS 0x006
25 #define SIOTRCR 0x008
26 #define SIOBAUR 0x00a
27 // #define SIORBAUR 0x018
28 #define SIOTXB 0x00c
29 #define SIORXB 0x00e
30
31 #define UART_RX ((unsigned long) PLD_ESIO0RXB)
32 /* In: Receive buffer (DLAB=0) */
33 #define UART_TX ((unsigned long) PLD_ESIO0TXB)
34 /* Out: Transmit buffer (DLAB=0) */
35 #define UART_DLL 0 /* Out: Divisor Latch Low (DLAB=1) */
36 #define UART_TRG 0 /* (LCR=BF) FCTR bit 7 selects Rx or Tx
37 * In: Fifo count
38 * Out: Fifo custom trigger levels
39 * XR16C85x only */
40
41 #define UART_DLM 0 /* Out: Divisor Latch High (DLAB=1) */
42 #define UART_IER ((unsigned long) PLD_ESIO0INTCR)
43 /* Out: Interrupt Enable Register */
44 #define UART_FCTR 0 /* (LCR=BF) Feature Control Register
45 * XR16C85x only */
46
47 #define UART_IIR 0 /* In: Interrupt ID Register */
48 #define UART_FCR 0 /* Out: FIFO Control Register */
49 #define UART_EFR 0 /* I/O: Extended Features Register */
50 /* (DLAB=1, 16C660 only) */
51
52 #define UART_LCR 0 /* Out: Line Control Register */
53 #define UART_MCR 0 /* Out: Modem Control Register */
54 #define UART_LSR ((unsigned long) PLD_ESIO0STS)
55 /* In: Line Status Register */
56 #define UART_MSR 0 /* In: Modem Status Register */
57 #define UART_SCR 0 /* I/O: Scratch Register */
58 #define UART_EMSR 0 /* (LCR=BF) Extended Mode Select Register
59 * FCTR bit 6 selects SCR or EMSR
60 * XR16c85x only */
61
62 #else /* not CONFIG_SERIAL_M32R_PLDSIO */
63
64 #define SIOCR 0x000
65 #define SIOMOD0 0x004
66 #define SIOMOD1 0x008
67 #define SIOSTS 0x00c
68 #define SIOTRCR 0x010
69 #define SIOBAUR 0x014
70 #define SIORBAUR 0x018
71 #define SIOTXB 0x01c
72 #define SIORXB 0x020
73
74 #define UART_RX M32R_SIO0_RXB_PORTL /* In: Receive buffer (DLAB=0) */
75 #define UART_TX M32R_SIO0_TXB_PORTL /* Out: Transmit buffer (DLAB=0) */
76 #define UART_DLL 0 /* Out: Divisor Latch Low (DLAB=1) */
77 #define UART_TRG 0 /* (LCR=BF) FCTR bit 7 selects Rx or Tx
78 * In: Fifo count
79 * Out: Fifo custom trigger levels
80 * XR16C85x only */
81
82 #define UART_DLM 0 /* Out: Divisor Latch High (DLAB=1) */
83 #define UART_IER M32R_SIO0_TRCR_PORTL /* Out: Interrupt Enable Register */
84 #define UART_FCTR 0 /* (LCR=BF) Feature Control Register
85 * XR16C85x only */
86
87 #define UART_IIR 0 /* In: Interrupt ID Register */
88 #define UART_FCR 0 /* Out: FIFO Control Register */
89 #define UART_EFR 0 /* I/O: Extended Features Register */
90 /* (DLAB=1, 16C660 only) */
91
92 #define UART_LCR 0 /* Out: Line Control Register */
93 #define UART_MCR 0 /* Out: Modem Control Register */
94 #define UART_LSR M32R_SIO0_STS_PORTL /* In: Line Status Register */
95 #define UART_MSR 0 /* In: Modem Status Register */
96 #define UART_SCR 0 /* I/O: Scratch Register */
97 #define UART_EMSR 0 /* (LCR=BF) Extended Mode Select Register
98 * FCTR bit 6 selects SCR or EMSR
99 * XR16c85x only */
100
101 #endif /* CONFIG_SERIAL_M32R_PLDSIO */
102
103 #define UART_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
104
105 /*
106 * These are the definitions for the Line Control Register
107 *
108 * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting
109 * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
110 */
111 #define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
112 #define UART_LCR_SBC 0x40 /* Set break control */
113 #define UART_LCR_SPAR 0x20 /* Stick parity (?) */
114 #define UART_LCR_EPAR 0x10 /* Even parity select */
115 #define UART_LCR_PARITY 0x08 /* Parity Enable */
116 #define UART_LCR_STOP 0x04 /* Stop bits: 0=1 stop bit, 1= 2 stop bits */
117 #define UART_LCR_WLEN5 0x00 /* Wordlength: 5 bits */
118 #define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */
119 #define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */
120 #define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */
121
122 /*
123 * These are the definitions for the Line Status Register
124 */
125 #define UART_LSR_TEMT 0x02 /* Transmitter empty */
126 #define UART_LSR_THRE 0x01 /* Transmit-hold-register empty */
127 #define UART_LSR_BI 0x00 /* Break interrupt indicator */
128 #define UART_LSR_FE 0x80 /* Frame error indicator */
129 #define UART_LSR_PE 0x40 /* Parity error indicator */
130 #define UART_LSR_OE 0x20 /* Overrun error indicator */
131 #define UART_LSR_DR 0x04 /* Receiver data ready */
132
133 /*
134 * These are the definitions for the Interrupt Identification Register
135 */
136 #define UART_IIR_NO_INT 0x01 /* No interrupts pending */
137 #define UART_IIR_ID 0x06 /* Mask for the interrupt ID */
138
139 #define UART_IIR_MSI 0x00 /* Modem status interrupt */
140 #define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
141 #define UART_IIR_RDI 0x04 /* Receiver data interrupt */
142 #define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */
143
144 /*
145 * These are the definitions for the Interrupt Enable Register
146 */
147 #define UART_IER_MSI 0x00 /* Enable Modem status interrupt */
148 #define UART_IER_RLSI 0x08 /* Enable receiver line status interrupt */
149 #define UART_IER_THRI 0x03 /* Enable Transmitter holding register int. */
150 #define UART_IER_RDI 0x04 /* Enable receiver data interrupt */
151
152 #endif /* _M32R_SIO_REG_H */
153
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