Linux/include/linux/serial_reg.h

  1 /*
  2  * include/linux/serial_reg.h
  3  *
  4  * Copyright (C) 1992, 1994 by Theodore Ts'o.
  5  * 
  6  * Redistribution of this file is permitted under the terms of the GNU 
  7  * Public License (GPL)
  8  * 
  9  * These are the UART port assignments, expressed as offsets from the base
 10  * register.  These assignments should hold for any serial port based on
 11  * a 8250, 16450, or 16550(A).
 12  */
 13 
 14 #ifndef _LINUX_SERIAL_REG_H
 15 #define _LINUX_SERIAL_REG_H
 16 
 17 /*
 18  * DLAB=0
 19  */
 20 #define UART_RX         0       /* In:  Receive buffer */
 21 #define UART_TX         0       /* Out: Transmit buffer */
 22 
 23 #define UART_IER        1       /* Out: Interrupt Enable Register */
 24 #define UART_IER_MSI            0x08 /* Enable Modem status interrupt */
 25 #define UART_IER_RLSI           0x04 /* Enable receiver line status interrupt */
 26 #define UART_IER_THRI           0x02 /* Enable Transmitter holding register int. */
 27 #define UART_IER_RDI            0x01 /* Enable receiver data interrupt */
 28 /*
 29  * Sleep mode for ST16650 and TI16750.  For the ST16650, EFR[4]=1
 30  */
 31 #define UART_IERX_SLEEP         0x10 /* Enable sleep mode */
 32 
 33 #define UART_IIR        2       /* In:  Interrupt ID Register */
 34 #define UART_IIR_NO_INT         0x01 /* No interrupts pending */
 35 #define UART_IIR_ID             0x06 /* Mask for the interrupt ID */
 36 #define UART_IIR_MSI            0x00 /* Modem status interrupt */
 37 #define UART_IIR_THRI           0x02 /* Transmitter holding register empty */
 38 #define UART_IIR_RDI            0x04 /* Receiver data interrupt */
 39 #define UART_IIR_RLSI           0x06 /* Receiver line status interrupt */
 40 
 41 #define UART_IIR_BUSY           0x07 /* DesignWare APB Busy Detect */
 42 
 43 #define UART_FCR        2       /* Out: FIFO Control Register */
 44 #define UART_FCR_ENABLE_FIFO    0x01 /* Enable the FIFO */
 45 #define UART_FCR_CLEAR_RCVR     0x02 /* Clear the RCVR FIFO */
 46 #define UART_FCR_CLEAR_XMIT     0x04 /* Clear the XMIT FIFO */
 47 #define UART_FCR_DMA_SELECT     0x08 /* For DMA applications */
 48 /*
 49  * Note: The FIFO trigger levels are chip specific:
 50  *      RX:76 = 00  01  10  11  TX:54 = 00  01  10  11
 51  * PC16550D:     1   4   8  14          xx  xx  xx  xx
 52  * TI16C550A:    1   4   8  14          xx  xx  xx  xx
 53  * TI16C550C:    1   4   8  14          xx  xx  xx  xx
 54  * ST16C550:     1   4   8  14          xx  xx  xx  xx
 55  * ST16C650:     8  16  24  28          16   8  24  30  PORT_16650V2
 56  * NS16C552:     1   4   8  14          xx  xx  xx  xx
 57  * ST16C654:     8  16  56  60           8  16  32  56  PORT_16654
 58  * TI16C750:     1  16  32  56          xx  xx  xx  xx  PORT_16750
 59  * TI16C752:     8  16  56  60           8  16  32  56
 60  */
 61 #define UART_FCR_R_TRIG_00      0x00
 62 #define UART_FCR_R_TRIG_01      0x40
 63 #define UART_FCR_R_TRIG_10      0x80
 64 #define UART_FCR_R_TRIG_11      0xc0
 65 #define UART_FCR_T_TRIG_00      0x00
 66 #define UART_FCR_T_TRIG_01      0x10
 67 #define UART_FCR_T_TRIG_10      0x20
 68 #define UART_FCR_T_TRIG_11      0x30
 69 
 70 #define UART_FCR_TRIGGER_MASK   0xC0 /* Mask for the FIFO trigger range */
 71 #define UART_FCR_TRIGGER_1      0x00 /* Mask for trigger set at 1 */
 72 #define UART_FCR_TRIGGER_4      0x40 /* Mask for trigger set at 4 */
 73 #define UART_FCR_TRIGGER_8      0x80 /* Mask for trigger set at 8 */
 74 #define UART_FCR_TRIGGER_14     0xC0 /* Mask for trigger set at 14 */
 75 /* 16650 definitions */
 76 #define UART_FCR6_R_TRIGGER_8   0x00 /* Mask for receive trigger set at 1 */
 77 #define UART_FCR6_R_TRIGGER_16  0x40 /* Mask for receive trigger set at 4 */
 78 #define UART_FCR6_R_TRIGGER_24  0x80 /* Mask for receive trigger set at 8 */
 79 #define UART_FCR6_R_TRIGGER_28  0xC0 /* Mask for receive trigger set at 14 */
 80 #define UART_FCR6_T_TRIGGER_16  0x00 /* Mask for transmit trigger set at 16 */
 81 #define UART_FCR6_T_TRIGGER_8   0x10 /* Mask for transmit trigger set at 8 */
 82 #define UART_FCR6_T_TRIGGER_24  0x20 /* Mask for transmit trigger set at 24 */
 83 #define UART_FCR6_T_TRIGGER_30  0x30 /* Mask for transmit trigger set at 30 */
 84 #define UART_FCR7_64BYTE        0x20 /* Go into 64 byte mode (TI16C750) */
 85 
 86 #define UART_LCR        3       /* Out: Line Control Register */
 87 /*
 88  * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting 
 89  * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
 90  */
 91 #define UART_LCR_DLAB           0x80 /* Divisor latch access bit */
 92 #define UART_LCR_SBC            0x40 /* Set break control */
 93 #define UART_LCR_SPAR           0x20 /* Stick parity (?) */
 94 #define UART_LCR_EPAR           0x10 /* Even parity select */
 95 #define UART_LCR_PARITY         0x08 /* Parity Enable */
 96 #define UART_LCR_STOP           0x04 /* Stop bits: 0=1 bit, 1=2 bits */
 97 #define UART_LCR_WLEN5          0x00 /* Wordlength: 5 bits */
 98 #define UART_LCR_WLEN6          0x01 /* Wordlength: 6 bits */
 99 #define UART_LCR_WLEN7          0x02 /* Wordlength: 7 bits */
100 #define UART_LCR_WLEN8          0x03 /* Wordlength: 8 bits */
101 
102 #define UART_MCR        4       /* Out: Modem Control Register */
103 #define UART_MCR_CLKSEL         0x80 /* Divide clock by 4 (TI16C752, EFR[4]=1) */
104 #define UART_MCR_TCRTLR         0x40 /* Access TCR/TLR (TI16C752, EFR[4]=1) */
105 #define UART_MCR_XONANY         0x20 /* Enable Xon Any (TI16C752, EFR[4]=1) */
106 #define UART_MCR_AFE            0x20 /* Enable auto-RTS/CTS (TI16C550C/TI16C750) */
107 #define UART_MCR_LOOP           0x10 /* Enable loopback test mode */
108 #define UART_MCR_OUT2           0x08 /* Out2 complement */
109 #define UART_MCR_OUT1           0x04 /* Out1 complement */
110 #define UART_MCR_RTS            0x02 /* RTS complement */
111 #define UART_MCR_DTR            0x01 /* DTR complement */
112 
113 #define UART_LSR        5       /* In:  Line Status Register */
114 #define UART_LSR_TEMT           0x40 /* Transmitter empty */
115 #define UART_LSR_THRE           0x20 /* Transmit-hold-register empty */
116 #define UART_LSR_BI             0x10 /* Break interrupt indicator */
117 #define UART_LSR_FE             0x08 /* Frame error indicator */
118 #define UART_LSR_PE             0x04 /* Parity error indicator */
119 #define UART_LSR_OE             0x02 /* Overrun error indicator */
120 #define UART_LSR_DR             0x01 /* Receiver data ready */
121 #define UART_LSR_BRK_ERROR_BITS 0x1E /* BI, FE, PE, OE bits */
122 
123 #define UART_MSR        6       /* In:  Modem Status Register */
124 #define UART_MSR_DCD            0x80 /* Data Carrier Detect */
125 #define UART_MSR_RI             0x40 /* Ring Indicator */
126 #define UART_MSR_DSR            0x20 /* Data Set Ready */
127 #define UART_MSR_CTS            0x10 /* Clear to Send */
128 #define UART_MSR_DDCD           0x08 /* Delta DCD */
129 #define UART_MSR_TERI           0x04 /* Trailing edge ring indicator */
130 #define UART_MSR_DDSR           0x02 /* Delta DSR */
131 #define UART_MSR_DCTS           0x01 /* Delta CTS */
132 #define UART_MSR_ANY_DELTA      0x0F /* Any of the delta bits! */
133 
134 #define UART_SCR        7       /* I/O: Scratch Register */
135 
136 /*
137  * DLAB=1
138  */
139 #define UART_DLL        0       /* Out: Divisor Latch Low */
140 #define UART_DLM        1       /* Out: Divisor Latch High */
141 
142 /*
143  * LCR=0xBF (or DLAB=1 for 16C660)
144  */
145 #define UART_EFR        2       /* I/O: Extended Features Register */
146 #define UART_EFR_CTS            0x80 /* CTS flow control */
147 #define UART_EFR_RTS            0x40 /* RTS flow control */
148 #define UART_EFR_SCD            0x20 /* Special character detect */
149 #define UART_EFR_ECB            0x10 /* Enhanced control bit */
150 /*
151  * the low four bits control software flow control
152  */
153 
154 /*
155  * LCR=0xBF, TI16C752, ST16650, ST16650A, ST16654
156  */
157 #define UART_XON1       4       /* I/O: Xon character 1 */
158 #define UART_XON2       5       /* I/O: Xon character 2 */
159 #define UART_XOFF1      6       /* I/O: Xoff character 1 */
160 #define UART_XOFF2      7       /* I/O: Xoff character 2 */
161 
162 /*
163  * EFR[4]=1 MCR[6]=1, TI16C752
164  */
165 #define UART_TI752_TCR  6       /* I/O: transmission control register */
166 #define UART_TI752_TLR  7       /* I/O: trigger level register */
167 
168 /*
169  * LCR=0xBF, XR16C85x
170  */
171 #define UART_TRG        0       /* FCTR bit 7 selects Rx or Tx
172                                  * In: Fifo count
173                                  * Out: Fifo custom trigger levels */
174 /*
175  * These are the definitions for the Programmable Trigger Register
176  */
177 #define UART_TRG_1              0x01
178 #define UART_TRG_4              0x04
179 #define UART_TRG_8              0x08
180 #define UART_TRG_16             0x10
181 #define UART_TRG_32             0x20
182 #define UART_TRG_64             0x40
183 #define UART_TRG_96             0x60
184 #define UART_TRG_120            0x78
185 #define UART_TRG_128            0x80
186 
187 #define UART_FCTR       1       /* Feature Control Register */
188 #define UART_FCTR_RTS_NODELAY   0x00  /* RTS flow control delay */
189 #define UART_FCTR_RTS_4DELAY    0x01
190 #define UART_FCTR_RTS_6DELAY    0x02
191 #define UART_FCTR_RTS_8DELAY    0x03
192 #define UART_FCTR_IRDA          0x04  /* IrDa data encode select */
193 #define UART_FCTR_TX_INT        0x08  /* Tx interrupt type select */
194 #define UART_FCTR_TRGA          0x00  /* Tx/Rx 550 trigger table select */
195 #define UART_FCTR_TRGB          0x10  /* Tx/Rx 650 trigger table select */
196 #define UART_FCTR_TRGC          0x20  /* Tx/Rx 654 trigger table select */
197 #define UART_FCTR_TRGD          0x30  /* Tx/Rx 850 programmable trigger select */
198 #define UART_FCTR_SCR_SWAP      0x40  /* Scratch pad register swap */
199 #define UART_FCTR_RX            0x00  /* Programmable trigger mode select */
200 #define UART_FCTR_TX            0x80  /* Programmable trigger mode select */
201 
202 /*
203  * LCR=0xBF, FCTR[6]=1
204  */
205 #define UART_EMSR       7       /* Extended Mode Select Register */
206 #define UART_EMSR_FIFO_COUNT    0x01  /* Rx/Tx select */
207 #define UART_EMSR_ALT_COUNT     0x02  /* Alternating count select */
208 
209 /*
210  * The Intel XScale on-chip UARTs define these bits
211  */
212 #define UART_IER_DMAE   0x80    /* DMA Requests Enable */
213 #define UART_IER_UUE    0x40    /* UART Unit Enable */
214 #define UART_IER_NRZE   0x20    /* NRZ coding Enable */
215 #define UART_IER_RTOIE  0x10    /* Receiver Time Out Interrupt Enable */
216 
217 #define UART_IIR_TOD    0x08    /* Character Timeout Indication Detected */
218 
219 #define UART_FCR_PXAR1  0x00    /* receive FIFO treshold = 1 */
220 #define UART_FCR_PXAR8  0x40    /* receive FIFO treshold = 8 */
221 #define UART_FCR_PXAR16 0x80    /* receive FIFO treshold = 16 */
222 #define UART_FCR_PXAR32 0xc0    /* receive FIFO treshold = 32 */
223 
224 
225 
226 
227 /*
228  * These register definitions are for the 16C950
229  */
230 #define UART_ASR        0x01    /* Additional Status Register */
231 #define UART_RFL        0x03    /* Receiver FIFO level */
232 #define UART_TFL        0x04    /* Transmitter FIFO level */
233 #define UART_ICR        0x05    /* Index Control Register */
234 
235 /* The 16950 ICR registers */
236 #define UART_ACR        0x00    /* Additional Control Register */
237 #define UART_CPR        0x01    /* Clock Prescalar Register */
238 #define UART_TCR        0x02    /* Times Clock Register */
239 #define UART_CKS        0x03    /* Clock Select Register */
240 #define UART_TTL        0x04    /* Transmitter Interrupt Trigger Level */
241 #define UART_RTL        0x05    /* Receiver Interrupt Trigger Level */
242 #define UART_FCL        0x06    /* Flow Control Level Lower */
243 #define UART_FCH        0x07    /* Flow Control Level Higher */
244 #define UART_ID1        0x08    /* ID #1 */
245 #define UART_ID2        0x09    /* ID #2 */
246 #define UART_ID3        0x0A    /* ID #3 */
247 #define UART_REV        0x0B    /* Revision */
248 #define UART_CSR        0x0C    /* Channel Software Reset */
249 #define UART_NMR        0x0D    /* Nine-bit Mode Register */
250 #define UART_CTR        0xFF
251 
252 /*
253  * The 16C950 Additional Control Register
254  */
255 #define UART_ACR_RXDIS  0x01    /* Receiver disable */
256 #define UART_ACR_TXDIS  0x02    /* Transmitter disable */
257 #define UART_ACR_DSRFC  0x04    /* DSR Flow Control */
258 #define UART_ACR_TLENB  0x20    /* 950 trigger levels enable */
259 #define UART_ACR_ICRRD  0x40    /* ICR Read enable */
260 #define UART_ACR_ASREN  0x80    /* Additional status enable */
261 
262 
263 
264 /*
265  * These definitions are for the RSA-DV II/S card, from
266  *
267  * Kiyokazu SUTO <suto@ks-and-ks.ne.jp>
268  */
269 
270 #define UART_RSA_BASE (-8)
271 
272 #define UART_RSA_MSR ((UART_RSA_BASE) + 0) /* I/O: Mode Select Register */
273 
274 #define UART_RSA_MSR_SWAP (1 << 0) /* Swap low/high 8 bytes in I/O port addr */
275 #define UART_RSA_MSR_FIFO (1 << 2) /* Enable the external FIFO */
276 #define UART_RSA_MSR_FLOW (1 << 3) /* Enable the auto RTS/CTS flow control */
277 #define UART_RSA_MSR_ITYP (1 << 4) /* Level (1) / Edge triger (0) */
278 
279 #define UART_RSA_IER ((UART_RSA_BASE) + 1) /* I/O: Interrupt Enable Register */
280 
281 #define UART_RSA_IER_Rx_FIFO_H (1 << 0) /* Enable Rx FIFO half full int. */
282 #define UART_RSA_IER_Tx_FIFO_H (1 << 1) /* Enable Tx FIFO half full int. */
283 #define UART_RSA_IER_Tx_FIFO_E (1 << 2) /* Enable Tx FIFO empty int. */
284 #define UART_RSA_IER_Rx_TOUT (1 << 3) /* Enable char receive timeout int */
285 #define UART_RSA_IER_TIMER (1 << 4) /* Enable timer interrupt */
286 
287 #define UART_RSA_SRR ((UART_RSA_BASE) + 2) /* IN: Status Read Register */
288 
289 #define UART_RSA_SRR_Tx_FIFO_NEMP (1 << 0) /* Tx FIFO is not empty (1) */
290 #define UART_RSA_SRR_Tx_FIFO_NHFL (1 << 1) /* Tx FIFO is not half full (1) */
291 #define UART_RSA_SRR_Tx_FIFO_NFUL (1 << 2) /* Tx FIFO is not full (1) */
292 #define UART_RSA_SRR_Rx_FIFO_NEMP (1 << 3) /* Rx FIFO is not empty (1) */
293 #define UART_RSA_SRR_Rx_FIFO_NHFL (1 << 4) /* Rx FIFO is not half full (1) */
294 #define UART_RSA_SRR_Rx_FIFO_NFUL (1 << 5) /* Rx FIFO is not full (1) */
295 #define UART_RSA_SRR_Rx_TOUT (1 << 6) /* Character reception timeout occurred (1) */
296 #define UART_RSA_SRR_TIMER (1 << 7) /* Timer interrupt occurred */
297 
298 #define UART_RSA_FRR ((UART_RSA_BASE) + 2) /* OUT: FIFO Reset Register */
299 
300 #define UART_RSA_TIVSR ((UART_RSA_BASE) + 3) /* I/O: Timer Interval Value Set Register */
301 
302 #define UART_RSA_TCR ((UART_RSA_BASE) + 4) /* OUT: Timer Control Register */
303 
304 #define UART_RSA_TCR_SWITCH (1 << 0) /* Timer on */
305 
306 /*
307  * The RSA DSV/II board has two fixed clock frequencies.  One is the
308  * standard rate, and the other is 8 times faster.
309  */
310 #define SERIAL_RSA_BAUD_BASE (921600)
311 #define SERIAL_RSA_BAUD_BASE_LO (SERIAL_RSA_BAUD_BASE / 8)
312 
313 /*
314  * Extra serial register definitions for the internal UARTs
315  * in TI OMAP processors.
316  */
317 #define UART_OMAP_MDR1          0x08    /* Mode definition register */
318 #define UART_OMAP_MDR2          0x09    /* Mode definition register 2 */
319 #define UART_OMAP_SCR           0x10    /* Supplementary control register */
320 #define UART_OMAP_SSR           0x11    /* Supplementary status register */
321 #define UART_OMAP_EBLR          0x12    /* BOF length register */
322 #define UART_OMAP_OSC_12M_SEL   0x13    /* OMAP1510 12MHz osc select */
323 #define UART_OMAP_MVER          0x14    /* Module version register */
324 #define UART_OMAP_SYSC          0x15    /* System configuration register */
325 #define UART_OMAP_SYSS          0x16    /* System status register */
326 #define UART_OMAP_WER           0x17    /* Wake-up enable register */
327 
328 #endif /* _LINUX_SERIAL_REG_H */
329 
330 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us