projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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_FCR 2 /* Out: FIFO Control Register */ | |
| 42 | #define UART_FCR_ENABLE_FIFO 0x01 /* Enable the FIFO */ | |
| 43 | #define UART_FCR_CLEAR_RCVR 0x02 /* Clear the RCVR FIFO */ | |
| 44 | #define UART_FCR_CLEAR_XMIT 0x04 /* Clear the XMIT FIFO */ | |
| 45 | #define UART_FCR_DMA_SELECT 0x08 /* For DMA applications */ | |
| 46 | /* | |
| 47 | * Note: The FIFO trigger levels are chip specific: | |
| 48 | * RX:76 = 00 01 10 11 TX:54 = 00 01 10 11 | |
| 49 | * PC16550D: 1 4 8 14 xx xx xx xx | |
| 50 | * TI16C550A: 1 4 8 14 xx xx xx xx | |
| 51 | * TI16C550C: 1 4 8 14 xx xx xx xx | |
| 52 | * ST16C550: 1 4 8 14 xx xx xx xx | |
| 53 | * ST16C650: 8 16 24 28 16 8 24 30 PORT_16650V2 | |
| 54 | * NS16C552: 1 4 8 14 xx xx xx xx | |
| 55 | * ST16C654: 8 16 56 60 8 16 32 56 PORT_16654 | |
| 56 | * TI16C750: 1 16 32 56 xx xx xx xx PORT_16750 | |
| 57 | * TI16C752: 8 16 56 60 8 16 32 56 | |
| 58 | */ | |
| 59 | #define UART_FCR_R_TRIG_00 0x00 | |
| 60 | #define UART_FCR_R_TRIG_01 0x40 | |
| 61 | #define UART_FCR_R_TRIG_10 0x80 | |
| 62 | #define UART_FCR_R_TRIG_11 0xc0 | |
| 63 | #define UART_FCR_T_TRIG_00 0x00 | |
| 64 | #define UART_FCR_T_TRIG_01 0x10 | |
| 65 | #define UART_FCR_T_TRIG_10 0x20 | |
| 66 | #define UART_FCR_T_TRIG_11 0x30 | |
| 67 | ||
| 68 | #define UART_FCR_TRIGGER_MASK 0xC0 /* Mask for the FIFO trigger range */ | |
| 69 | #define UART_FCR_TRIGGER_1 0x00 /* Mask for trigger set at 1 */ | |
| 70 | #define UART_FCR_TRIGGER_4 0x40 /* Mask for trigger set at 4 */ | |
| 71 | #define UART_FCR_TRIGGER_8 0x80 /* Mask for trigger set at 8 */ | |
| 72 | #define UART_FCR_TRIGGER_14 0xC0 /* Mask for trigger set at 14 */ | |
| 73 | /* 16650 definitions */ | |
| 74 | #define UART_FCR6_R_TRIGGER_8 0x00 /* Mask for receive trigger set at 1 */ | |
| 75 | #define UART_FCR6_R_TRIGGER_16 0x40 /* Mask for receive trigger set at 4 */ | |
| 76 | #define UART_FCR6_R_TRIGGER_24 0x80 /* Mask for receive trigger set at 8 */ | |
| 77 | #define UART_FCR6_R_TRIGGER_28 0xC0 /* Mask for receive trigger set at 14 */ | |
| 78 | #define UART_FCR6_T_TRIGGER_16 0x00 /* Mask for transmit trigger set at 16 */ | |
| 79 | #define UART_FCR6_T_TRIGGER_8 0x10 /* Mask for transmit trigger set at 8 */ | |
| 80 | #define UART_FCR6_T_TRIGGER_24 0x20 /* Mask for transmit trigger set at 24 */ | |
| 81 | #define UART_FCR6_T_TRIGGER_30 0x30 /* Mask for transmit trigger set at 30 */ | |
| 82 | #define UART_FCR7_64BYTE 0x20 /* Go into 64 byte mode (TI16C750) */ | |
| 83 | ||
| 84 | #define UART_LCR 3 /* Out: Line Control Register */ | |
| 85 | /* | |
| 86 | * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting | |
| 87 | * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits. | |
| 88 | */ | |
| 89 | #define UART_LCR_DLAB 0x80 /* Divisor latch access bit */ | |
| 90 | #define UART_LCR_SBC 0x40 /* Set break control */ | |
| 91 | #define UART_LCR_SPAR 0x20 /* Stick parity (?) */ | |
| 92 | #define UART_LCR_EPAR 0x10 /* Even parity select */ | |
| 93 | #define UART_LCR_PARITY 0x08 /* Parity Enable */ | |
| 94 | #define UART_LCR_STOP 0x04 /* Stop bits: 0=1 bit, 1=2 bits */ | |
| 95 | #define UART_LCR_WLEN5 0x00 /* Wordlength: 5 bits */ | |
| 96 | #define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */ | |
| 97 | #define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */ | |
| 98 | #define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */ | |
| 99 | ||
| 100 | #define UART_MCR 4 /* Out: Modem Control Register */ | |
| 101 | #define UART_MCR_CLKSEL 0x80 /* Divide clock by 4 (TI16C752, EFR[4]=1) */ | |
| 102 | #define UART_MCR_TCRTLR 0x40 /* Access TCR/TLR (TI16C752, EFR[4]=1) */ | |
| 103 | #define UART_MCR_XONANY 0x20 /* Enable Xon Any (TI16C752, EFR[4]=1) */ | |
| 104 | #define UART_MCR_AFE 0x20 /* Enable auto-RTS/CTS (TI16C550C/TI16C750) */ | |
| 105 | #define UART_MCR_LOOP 0x10 /* Enable loopback test mode */ | |
| 106 | #define UART_MCR_OUT2 0x08 /* Out2 complement */ | |
| 107 | #define UART_MCR_OUT1 0x04 /* Out1 complement */ | |
| 108 | #define UART_MCR_RTS 0x02 /* RTS complement */ | |
| 109 | #define UART_MCR_DTR 0x01 /* DTR complement */ | |
| 110 | ||
| 111 | #define UART_LSR 5 /* In: Line Status Register */ | |
| 112 | #define UART_LSR_TEMT 0x40 /* Transmitter empty */ | |
| 113 | #define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */ | |
| 114 | #define UART_LSR_BI 0x10 /* Break interrupt indicator */ | |
| 115 | #define UART_LSR_FE 0x08 /* Frame error indicator */ | |
| 116 | #define UART_LSR_PE 0x04 /* Parity error indicator */ | |
| 117 | #define UART_LSR_OE 0x02 /* Overrun error indicator */ | |
| 118 | #define UART_LSR_DR 0x01 /* Receiver data ready */ | |
| 119 | ||
| 120 | #define UART_MSR 6 /* In: Modem Status Register */ | |
| 121 | #define UART_MSR_DCD 0x80 /* Data Carrier Detect */ | |
| 122 | #define UART_MSR_RI 0x40 /* Ring Indicator */ | |
| 123 | #define UART_MSR_DSR 0x20 /* Data Set Ready */ | |
| 124 | #define UART_MSR_CTS 0x10 /* Clear to Send */ | |
| 125 | #define UART_MSR_DDCD 0x08 /* Delta DCD */ | |
| 126 | #define UART_MSR_TERI 0x04 /* Trailing edge ring indicator */ | |
| 127 | #define UART_MSR_DDSR 0x02 /* Delta DSR */ | |
| 128 | #define UART_MSR_DCTS 0x01 /* Delta CTS */ | |
| 129 | #define UART_MSR_ANY_DELTA 0x0F /* Any of the delta bits! */ | |
| 130 | ||
| 131 | #define UART_SCR 7 /* I/O: Scratch Register */ | |
| 132 | ||
| 133 | /* | |
| 134 | * DLAB=1 | |
| 135 | */ | |
| 136 | #define UART_DLL 0 /* Out: Divisor Latch Low */ | |
| 137 | #define UART_DLM 1 /* Out: Divisor Latch High */ | |
| 138 | ||
| 139 | /* | |
| 140 | * LCR=0xBF (or DLAB=1 for 16C660) | |
| 141 | */ | |
| 142 | #define UART_EFR 2 /* I/O: Extended Features Register */ | |
| 143 | #define UART_EFR_CTS 0x80 /* CTS flow control */ | |
| 144 | #define UART_EFR_RTS 0x40 /* RTS flow control */ | |
| 145 | #define UART_EFR_SCD 0x20 /* Special character detect */ | |
| 146 | #define UART_EFR_ECB 0x10 /* Enhanced control bit */ | |
| 147 | /* | |
| 148 | * the low four bits control software flow control | |
| 149 | */ | |
| 150 | ||
| 151 | /* | |
| 152 | * LCR=0xBF, TI16C752, ST16650, ST16650A, ST16654 | |
| 153 | */ | |
| 154 | #define UART_XON1 4 /* I/O: Xon character 1 */ | |
| 155 | #define UART_XON2 5 /* I/O: Xon character 2 */ | |
| 156 | #define UART_XOFF1 6 /* I/O: Xoff character 1 */ | |
| 157 | #define UART_XOFF2 7 /* I/O: Xoff character 2 */ | |
| 158 | ||
| 159 | /* | |
| 160 | * EFR[4]=1 MCR[6]=1, TI16C752 | |
| 161 | */ | |
| 162 | #define UART_TI752_TCR 6 /* I/O: transmission control register */ | |
| 163 | #define UART_TI752_TLR 7 /* I/O: trigger level register */ | |
| 164 | ||
| 165 | /* | |
| 166 | * LCR=0xBF, XR16C85x | |
| 167 | */ | |
| 168 | #define UART_TRG 0 /* FCTR bit 7 selects Rx or Tx | |
| 169 | * In: Fifo count | |
| 170 | * Out: Fifo custom trigger levels */ | |
| 171 | /* | |
| 172 | * These are the definitions for the Programmable Trigger Register | |
| 173 | */ | |
| 174 | #define UART_TRG_1 0x01 | |
| 175 | #define UART_TRG_4 0x04 | |
| 176 | #define UART_TRG_8 0x08 | |
| 177 | #define UART_TRG_16 0x10 | |
| 178 | #define UART_TRG_32 0x20 | |
| 179 | #define UART_TRG_64 0x40 | |
| 180 | #define UART_TRG_96 0x60 | |
| 181 | #define UART_TRG_120 0x78 | |
| 182 | #define UART_TRG_128 0x80 | |
| 183 | ||
| 184 | #define UART_FCTR 1 /* Feature Control Register */ | |
| 185 | #define UART_FCTR_RTS_NODELAY 0x00 /* RTS flow control delay */ | |
| 186 | #define UART_FCTR_RTS_4DELAY 0x01 | |
| 187 | #define UART_FCTR_RTS_6DELAY 0x02 | |
| 188 | #define UART_FCTR_RTS_8DELAY 0x03 | |
| 189 | #define UART_FCTR_IRDA 0x04 /* IrDa data encode select */ | |
| 190 | #define UART_FCTR_TX_INT 0x08 /* Tx interrupt type select */ | |
| 191 | #define UART_FCTR_TRGA 0x00 /* Tx/Rx 550 trigger table select */ | |
| 192 | #define UART_FCTR_TRGB 0x10 /* Tx/Rx 650 trigger table select */ | |
| 193 | #define UART_FCTR_TRGC 0x20 /* Tx/Rx 654 trigger table select */ | |
| 194 | #define UART_FCTR_TRGD 0x30 /* Tx/Rx 850 programmable trigger select */ | |
| 195 | #define UART_FCTR_SCR_SWAP 0x40 /* Scratch pad register swap */ | |
| 196 | #define UART_FCTR_RX 0x00 /* Programmable trigger mode select */ | |
| 197 | #define UART_FCTR_TX 0x80 /* Programmable trigger mode select */ | |
| 198 | ||
| 199 | /* | |
| 200 | * LCR=0xBF, FCTR[6]=1 | |
| 201 | */ | |
| 202 | #define UART_EMSR 7 /* Extended Mode Select Register */ | |
| 203 | #define UART_EMSR_FIFO_COUNT 0x01 /* Rx/Tx select */ | |
| 204 | #define UART_EMSR_ALT_COUNT 0x02 /* Alternating count select */ | |
| 205 | ||
| 206 | /* | |
| 207 | * The Intel XScale on-chip UARTs define these bits | |
| 208 | */ | |
| 209 | #define UART_IER_DMAE 0x80 /* DMA Requests Enable */ | |
| 210 | #define UART_IER_UUE 0x40 /* UART Unit Enable */ | |
| 211 | #define UART_IER_NRZE 0x20 /* NRZ coding Enable */ | |
| 212 | #define UART_IER_RTOIE 0x10 /* Receiver Time Out Interrupt Enable */ | |
| 213 | ||
| 214 | #define UART_IIR_TOD 0x08 /* Character Timeout Indication Detected */ | |
| 215 | ||
| 216 | #define UART_FCR_PXAR1 0x00 /* receive FIFO treshold = 1 */ | |
| 217 | #define UART_FCR_PXAR8 0x40 /* receive FIFO treshold = 8 */ | |
| 218 | #define UART_FCR_PXAR16 0x80 /* receive FIFO treshold = 16 */ | |
| 219 | #define UART_FCR_PXAR32 0xc0 /* receive FIFO treshold = 32 */ | |
| 220 | ||
| 221 | ||
| 222 | ||
| 223 | ||
| 224 | /* | |
| 225 | * These register definitions are for the 16C950 | |
| 226 | */ | |
| 227 | #define UART_ASR 0x01 /* Additional Status Register */ | |
| 228 | #define UART_RFL 0x03 /* Receiver FIFO level */ | |
| 229 | #define UART_TFL 0x04 /* Transmitter FIFO level */ | |
| 230 | #define UART_ICR 0x05 /* Index Control Register */ | |
| 231 | ||
| 232 | /* The 16950 ICR registers */ | |
| 233 | #define UART_ACR 0x00 /* Additional Control Register */ | |
| 234 | #define UART_CPR 0x01 /* Clock Prescalar Register */ | |
| 235 | #define UART_TCR 0x02 /* Times Clock Register */ | |
| 236 | #define UART_CKS 0x03 /* Clock Select Register */ | |
| 237 | #define UART_TTL 0x04 /* Transmitter Interrupt Trigger Level */ | |
| 238 | #define UART_RTL 0x05 /* Receiver Interrupt Trigger Level */ | |
| 239 | #define UART_FCL 0x06 /* Flow Control Level Lower */ | |
| 240 | #define UART_FCH 0x07 /* Flow Control Level Higher */ | |
| 241 | #define UART_ID1 0x08 /* ID #1 */ | |
| 242 | #define UART_ID2 0x09 /* ID #2 */ | |
| 243 | #define UART_ID3 0x0A /* ID #3 */ | |
| 244 | #define UART_REV 0x0B /* Revision */ | |
| 245 | #define UART_CSR 0x0C /* Channel Software Reset */ | |
| 246 | #define UART_NMR 0x0D /* Nine-bit Mode Register */ | |
| 247 | #define UART_CTR 0xFF | |
| 248 | ||
| 249 | /* | |
| 250 | * The 16C950 Additional Control Reigster | |
| 251 | */ | |
| 252 | #define UART_ACR_RXDIS 0x01 /* Receiver disable */ | |
| 253 | #define UART_ACR_TXDIS 0x02 /* Receiver disable */ | |
| 254 | #define UART_ACR_DSRFC 0x04 /* DSR Flow Control */ | |
| 255 | #define UART_ACR_TLENB 0x20 /* 950 trigger levels enable */ | |
| 256 | #define UART_ACR_ICRRD 0x40 /* ICR Read enable */ | |
| 257 | #define UART_ACR_ASREN 0x80 /* Additional status enable */ | |
| 258 | ||
| 259 | ||
| 260 | ||
| 261 | /* | |
| 262 | * These definitions are for the RSA-DV II/S card, from | |
| 263 | * | |
| 264 | * Kiyokazu SUTO <[email protected]> | |
| 265 | */ | |
| 266 | ||
| 267 | #define UART_RSA_BASE (-8) | |
| 268 | ||
| 269 | #define UART_RSA_MSR ((UART_RSA_BASE) + 0) /* I/O: Mode Select Register */ | |
| 270 | ||
| 271 | #define UART_RSA_MSR_SWAP (1 << 0) /* Swap low/high 8 bytes in I/O port addr */ | |
| 272 | #define UART_RSA_MSR_FIFO (1 << 2) /* Enable the external FIFO */ | |
| 273 | #define UART_RSA_MSR_FLOW (1 << 3) /* Enable the auto RTS/CTS flow control */ | |
| 274 | #define UART_RSA_MSR_ITYP (1 << 4) /* Level (1) / Edge triger (0) */ | |
| 275 | ||
| 276 | #define UART_RSA_IER ((UART_RSA_BASE) + 1) /* I/O: Interrupt Enable Register */ | |
| 277 | ||
| 278 | #define UART_RSA_IER_Rx_FIFO_H (1 << 0) /* Enable Rx FIFO half full int. */ | |
| 279 | #define UART_RSA_IER_Tx_FIFO_H (1 << 1) /* Enable Tx FIFO half full int. */ | |
| 280 | #define UART_RSA_IER_Tx_FIFO_E (1 << 2) /* Enable Tx FIFO empty int. */ | |
| 281 | #define UART_RSA_IER_Rx_TOUT (1 << 3) /* Enable char receive timeout int */ | |
| 282 | #define UART_RSA_IER_TIMER (1 << 4) /* Enable timer interrupt */ | |
| 283 | ||
| 284 | #define UART_RSA_SRR ((UART_RSA_BASE) + 2) /* IN: Status Read Register */ | |
| 285 | ||
| 286 | #define UART_RSA_SRR_Tx_FIFO_NEMP (1 << 0) /* Tx FIFO is not empty (1) */ | |
| 287 | #define UART_RSA_SRR_Tx_FIFO_NHFL (1 << 1) /* Tx FIFO is not half full (1) */ | |
| 288 | #define UART_RSA_SRR_Tx_FIFO_NFUL (1 << 2) /* Tx FIFO is not full (1) */ | |
| 289 | #define UART_RSA_SRR_Rx_FIFO_NEMP (1 << 3) /* Rx FIFO is not empty (1) */ | |
| 290 | #define UART_RSA_SRR_Rx_FIFO_NHFL (1 << 4) /* Rx FIFO is not half full (1) */ | |
| 291 | #define UART_RSA_SRR_Rx_FIFO_NFUL (1 << 5) /* Rx FIFO is not full (1) */ | |
| 292 | #define UART_RSA_SRR_Rx_TOUT (1 << 6) /* Character reception timeout occurred (1) */ | |
| 293 | #define UART_RSA_SRR_TIMER (1 << 7) /* Timer interrupt occurred */ | |
| 294 | ||
| 295 | #define UART_RSA_FRR ((UART_RSA_BASE) + 2) /* OUT: FIFO Reset Register */ | |
| 296 | ||
| 297 | #define UART_RSA_TIVSR ((UART_RSA_BASE) + 3) /* I/O: Timer Interval Value Set Register */ | |
| 298 | ||
| 299 | #define UART_RSA_TCR ((UART_RSA_BASE) + 4) /* OUT: Timer Control Register */ | |
| 300 | ||
| 301 | #define UART_RSA_TCR_SWITCH (1 << 0) /* Timer on */ | |
| 302 | ||
| 303 | /* | |
| 304 | * The RSA DSV/II board has two fixed clock frequencies. One is the | |
| 305 | * standard rate, and the other is 8 times faster. | |
| 306 | */ | |
| 307 | #define SERIAL_RSA_BAUD_BASE (921600) | |
| 308 | #define SERIAL_RSA_BAUD_BASE_LO (SERIAL_RSA_BAUD_BASE / 8) | |
| 309 | ||
| 310 | /* | |
| 311 | * Extra serial register definitions for the internal UARTs | |
| 312 | * in TI OMAP processors. | |
| 313 | */ | |
| 314 | #define UART_OMAP_MDR1 0x08 /* Mode definition register */ | |
| 315 | #define UART_OMAP_MDR2 0x09 /* Mode definition register 2 */ | |
| 316 | #define UART_OMAP_SCR 0x10 /* Supplementary control register */ | |
| 317 | #define UART_OMAP_SSR 0x11 /* Supplementary status register */ | |
| 318 | #define UART_OMAP_EBLR 0x12 /* BOF length register */ | |
| 319 | #define UART_OMAP_OSC_12M_SEL 0x13 /* OMAP1510 12MHz osc select */ | |
| 320 | #define UART_OMAP_MVER 0x14 /* Module version register */ | |
| 321 | #define UART_OMAP_SYSC 0x15 /* System configuration register */ | |
| 322 | #define UART_OMAP_SYSS 0x16 /* System status register */ | |
| 323 | ||
| 324 | #endif /* _LINUX_SERIAL_REG_H */ | |
| 325 |