1/* 2 * linux/include/asm-arm/hardware/serial_amba.h 3 * 4 * Internal header file for AMBA serial ports 5 * 6 * Copyright (C) ARM Limited 7 * Copyright (C) 2000 Deep Blue Solutions Ltd. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23#ifndef ASM_ARM_HARDWARE_SERIAL_AMBA_H 24#define ASM_ARM_HARDWARE_SERIAL_AMBA_H 25 26#include <linux/types.h> 27 28/* ------------------------------------------------------------------------------- 29 * From AMBA UART (PL010) Block Specification 30 * ------------------------------------------------------------------------------- 31 * UART Register Offsets. 32 */ 33#define UART01x_DR 0x00 /* Data read or written from the interface. */ 34#define UART01x_RSR 0x04 /* Receive status register (Read). */ 35#define UART01x_ECR 0x04 /* Error clear register (Write). */ 36#define UART010_LCRH 0x08 /* Line control register, high byte. */ 37#define ST_UART011_DMAWM 0x08 /* DMA watermark configure register. */ 38#define UART010_LCRM 0x0C /* Line control register, middle byte. */ 39#define ST_UART011_TIMEOUT 0x0C /* Timeout period register. */ 40#define UART010_LCRL 0x10 /* Line control register, low byte. */ 41#define UART010_CR 0x14 /* Control register. */ 42#define UART01x_FR 0x18 /* Flag register (Read only). */ 43#define UART010_IIR 0x1C /* Interrupt identification register (Read). */ 44#define UART010_ICR 0x1C /* Interrupt clear register (Write). */ 45#define ST_UART011_LCRH_RX 0x1C /* Rx line control register. */ 46#define UART01x_ILPR 0x20 /* IrDA low power counter register. */ 47#define UART011_IBRD 0x24 /* Integer baud rate divisor register. */ 48#define UART011_FBRD 0x28 /* Fractional baud rate divisor register. */ 49#define UART011_LCRH 0x2c /* Line control register. */ 50#define ST_UART011_LCRH_TX 0x2c /* Tx Line control register. */ 51#define UART011_CR 0x30 /* Control register. */ 52#define UART011_IFLS 0x34 /* Interrupt fifo level select. */ 53#define UART011_IMSC 0x38 /* Interrupt mask. */ 54#define UART011_RIS 0x3c /* Raw interrupt status. */ 55#define UART011_MIS 0x40 /* Masked interrupt status. */ 56#define UART011_ICR 0x44 /* Interrupt clear register. */ 57#define UART011_DMACR 0x48 /* DMA control register. */ 58#define ST_UART011_XFCR 0x50 /* XON/XOFF control register. */ 59#define ST_UART011_XON1 0x54 /* XON1 register. */ 60#define ST_UART011_XON2 0x58 /* XON2 register. */ 61#define ST_UART011_XOFF1 0x5C /* XON1 register. */ 62#define ST_UART011_XOFF2 0x60 /* XON2 register. */ 63#define ST_UART011_ITCR 0x80 /* Integration test control register. */ 64#define ST_UART011_ITIP 0x84 /* Integration test input register. */ 65#define ST_UART011_ABCR 0x100 /* Autobaud control register. */ 66#define ST_UART011_ABIMSC 0x15C /* Autobaud interrupt mask/clear register. */ 67 68/* 69 * ZTE UART register offsets. This UART has a radically different address 70 * allocation from the ARM and ST variants, so we list all registers here. 71 * We assume unlisted registers do not exist. 72 */ 73#define ZX_UART011_DR 0x04 74#define ZX_UART011_FR 0x14 75#define ZX_UART011_IBRD 0x24 76#define ZX_UART011_FBRD 0x28 77#define ZX_UART011_LCRH 0x30 78#define ZX_UART011_CR 0x34 79#define ZX_UART011_IFLS 0x38 80#define ZX_UART011_IMSC 0x40 81#define ZX_UART011_RIS 0x44 82#define ZX_UART011_MIS 0x48 83#define ZX_UART011_ICR 0x4c 84#define ZX_UART011_DMACR 0x50 85 86#define UART011_DR_OE (1 << 11) 87#define UART011_DR_BE (1 << 10) 88#define UART011_DR_PE (1 << 9) 89#define UART011_DR_FE (1 << 8) 90 91#define UART01x_RSR_OE 0x08 92#define UART01x_RSR_BE 0x04 93#define UART01x_RSR_PE 0x02 94#define UART01x_RSR_FE 0x01 95 96#define UART011_FR_RI 0x100 97#define UART011_FR_TXFE 0x080 98#define UART011_FR_RXFF 0x040 99#define UART01x_FR_TXFF 0x020 100#define UART01x_FR_RXFE 0x010 101#define UART01x_FR_BUSY 0x008 102#define UART01x_FR_DCD 0x004 103#define UART01x_FR_DSR 0x002 104#define UART01x_FR_CTS 0x001 105#define UART01x_FR_TMSK (UART01x_FR_TXFF + UART01x_FR_BUSY) 106 107/* 108 * Some bits of Flag Register on ZTE device have different position from 109 * standard ones. 110 */ 111#define ZX_UART01x_FR_BUSY 0x100 112#define ZX_UART01x_FR_DSR 0x008 113#define ZX_UART01x_FR_CTS 0x002 114#define ZX_UART011_FR_RI 0x001 115 116#define UART011_CR_CTSEN 0x8000 /* CTS hardware flow control */ 117#define UART011_CR_RTSEN 0x4000 /* RTS hardware flow control */ 118#define UART011_CR_OUT2 0x2000 /* OUT2 */ 119#define UART011_CR_OUT1 0x1000 /* OUT1 */ 120#define UART011_CR_RTS 0x0800 /* RTS */ 121#define UART011_CR_DTR 0x0400 /* DTR */ 122#define UART011_CR_RXE 0x0200 /* receive enable */ 123#define UART011_CR_TXE 0x0100 /* transmit enable */ 124#define UART011_CR_LBE 0x0080 /* loopback enable */ 125#define UART010_CR_RTIE 0x0040 126#define UART010_CR_TIE 0x0020 127#define UART010_CR_RIE 0x0010 128#define UART010_CR_MSIE 0x0008 129#define ST_UART011_CR_OVSFACT 0x0008 /* Oversampling factor */ 130#define UART01x_CR_IIRLP 0x0004 /* SIR low power mode */ 131#define UART01x_CR_SIREN 0x0002 /* SIR enable */ 132#define UART01x_CR_UARTEN 0x0001 /* UART enable */ 133 134#define UART011_LCRH_SPS 0x80 135#define UART01x_LCRH_WLEN_8 0x60 136#define UART01x_LCRH_WLEN_7 0x40 137#define UART01x_LCRH_WLEN_6 0x20 138#define UART01x_LCRH_WLEN_5 0x00 139#define UART01x_LCRH_FEN 0x10 140#define UART01x_LCRH_STP2 0x08 141#define UART01x_LCRH_EPS 0x04 142#define UART01x_LCRH_PEN 0x02 143#define UART01x_LCRH_BRK 0x01 144 145#define ST_UART011_DMAWM_RX_1 (0 << 3) 146#define ST_UART011_DMAWM_RX_2 (1 << 3) 147#define ST_UART011_DMAWM_RX_4 (2 << 3) 148#define ST_UART011_DMAWM_RX_8 (3 << 3) 149#define ST_UART011_DMAWM_RX_16 (4 << 3) 150#define ST_UART011_DMAWM_RX_32 (5 << 3) 151#define ST_UART011_DMAWM_RX_48 (6 << 3) 152#define ST_UART011_DMAWM_TX_1 0 153#define ST_UART011_DMAWM_TX_2 1 154#define ST_UART011_DMAWM_TX_4 2 155#define ST_UART011_DMAWM_TX_8 3 156#define ST_UART011_DMAWM_TX_16 4 157#define ST_UART011_DMAWM_TX_32 5 158#define ST_UART011_DMAWM_TX_48 6 159 160#define UART010_IIR_RTIS 0x08 161#define UART010_IIR_TIS 0x04 162#define UART010_IIR_RIS 0x02 163#define UART010_IIR_MIS 0x01 164 165#define UART011_IFLS_RX1_8 (0 << 3) 166#define UART011_IFLS_RX2_8 (1 << 3) 167#define UART011_IFLS_RX4_8 (2 << 3) 168#define UART011_IFLS_RX6_8 (3 << 3) 169#define UART011_IFLS_RX7_8 (4 << 3) 170#define UART011_IFLS_TX1_8 (0 << 0) 171#define UART011_IFLS_TX2_8 (1 << 0) 172#define UART011_IFLS_TX4_8 (2 << 0) 173#define UART011_IFLS_TX6_8 (3 << 0) 174#define UART011_IFLS_TX7_8 (4 << 0) 175/* special values for ST vendor with deeper fifo */ 176#define UART011_IFLS_RX_HALF (5 << 3) 177#define UART011_IFLS_TX_HALF (5 << 0) 178 179#define UART011_OEIM (1 << 10) /* overrun error interrupt mask */ 180#define UART011_BEIM (1 << 9) /* break error interrupt mask */ 181#define UART011_PEIM (1 << 8) /* parity error interrupt mask */ 182#define UART011_FEIM (1 << 7) /* framing error interrupt mask */ 183#define UART011_RTIM (1 << 6) /* receive timeout interrupt mask */ 184#define UART011_TXIM (1 << 5) /* transmit interrupt mask */ 185#define UART011_RXIM (1 << 4) /* receive interrupt mask */ 186#define UART011_DSRMIM (1 << 3) /* DSR interrupt mask */ 187#define UART011_DCDMIM (1 << 2) /* DCD interrupt mask */ 188#define UART011_CTSMIM (1 << 1) /* CTS interrupt mask */ 189#define UART011_RIMIM (1 << 0) /* RI interrupt mask */ 190 191#define UART011_OEIS (1 << 10) /* overrun error interrupt status */ 192#define UART011_BEIS (1 << 9) /* break error interrupt status */ 193#define UART011_PEIS (1 << 8) /* parity error interrupt status */ 194#define UART011_FEIS (1 << 7) /* framing error interrupt status */ 195#define UART011_RTIS (1 << 6) /* receive timeout interrupt status */ 196#define UART011_TXIS (1 << 5) /* transmit interrupt status */ 197#define UART011_RXIS (1 << 4) /* receive interrupt status */ 198#define UART011_DSRMIS (1 << 3) /* DSR interrupt status */ 199#define UART011_DCDMIS (1 << 2) /* DCD interrupt status */ 200#define UART011_CTSMIS (1 << 1) /* CTS interrupt status */ 201#define UART011_RIMIS (1 << 0) /* RI interrupt status */ 202 203#define UART011_OEIC (1 << 10) /* overrun error interrupt clear */ 204#define UART011_BEIC (1 << 9) /* break error interrupt clear */ 205#define UART011_PEIC (1 << 8) /* parity error interrupt clear */ 206#define UART011_FEIC (1 << 7) /* framing error interrupt clear */ 207#define UART011_RTIC (1 << 6) /* receive timeout interrupt clear */ 208#define UART011_TXIC (1 << 5) /* transmit interrupt clear */ 209#define UART011_RXIC (1 << 4) /* receive interrupt clear */ 210#define UART011_DSRMIC (1 << 3) /* DSR interrupt clear */ 211#define UART011_DCDMIC (1 << 2) /* DCD interrupt clear */ 212#define UART011_CTSMIC (1 << 1) /* CTS interrupt clear */ 213#define UART011_RIMIC (1 << 0) /* RI interrupt clear */ 214 215#define UART011_DMAONERR (1 << 2) /* disable dma on error */ 216#define UART011_TXDMAE (1 << 1) /* enable transmit dma */ 217#define UART011_RXDMAE (1 << 0) /* enable receive dma */ 218 219#define UART01x_RSR_ANY (UART01x_RSR_OE|UART01x_RSR_BE|UART01x_RSR_PE|UART01x_RSR_FE) 220#define UART01x_FR_MODEM_ANY (UART01x_FR_DCD|UART01x_FR_DSR|UART01x_FR_CTS) 221 222#ifndef __ASSEMBLY__ 223struct amba_device; /* in uncompress this is included but amba/bus.h is not */ 224struct amba_pl010_data { 225 void (*set_mctrl)(struct amba_device *dev, void __iomem *base, unsigned int mctrl); 226}; 227 228struct dma_chan; 229struct amba_pl011_data { 230 bool (*dma_filter)(struct dma_chan *chan, void *filter_param); 231 void *dma_rx_param; 232 void *dma_tx_param; 233 bool dma_rx_poll_enable; 234 unsigned int dma_rx_poll_rate; 235 unsigned int dma_rx_poll_timeout; 236 void (*init) (void); 237 void (*exit) (void); 238}; 239#endif 240 241#endif 242