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      1 /*	$NetBSD: sab82532reg.h,v 1.2 2003/05/03 18:11:02 wiz Exp $	*/
      2 /*	$OpenBSD: sab82532reg.h,v 1.2 2002/04/08 17:49:42 jason Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 2001 Jason L. Wright (jason (at) thought.net)
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Jason L. Wright
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  *
     34  * Effort sponsored in part by the Defense Advanced Research Projects
     35  * Agency (DARPA) and Air Force Research Laboratory, Air Force
     36  * Materiel Command, USAF, under agreement number F30602-01-2-0537.
     37  *
     38  */
     39 
     40 /*
     41  * Register definitions for SAB82532 based on "Enhanced Serial Communication
     42  * Controller ESCC2 Version 3.2 User's Manual 07.96" from:
     43  * http://www.infineon.com
     44  */
     45 
     46 #define	SAB_NCHAN	2	/* number of channels */
     47 #define	SAB_CHANLEN	0x40	/* length of channel register set */
     48 
     49 #define	SAB_CHAN_A	0x00	/* channel A register offset */
     50 #define	SAB_CHAN_B	0x40	/* channel B register offset */
     51 
     52 #define	SAB_RFIFO	0x00	/* r: rx fifo */
     53 #define	SAB_XFIFO	0x00	/* w: tx fifo */
     54 #define	SAB_STAR	0x20	/* r: status register */
     55 #define	SAB_CMDR	0x20	/* w: command register */
     56 #define	SAB_MODE	0x22	/* rw: mode register */
     57 #define	SAB_TIMR	0x23	/* rw: timer register */
     58 #define	SAB_XON		0x24	/* rw: xon character */
     59 #define	SAB_XOFF	0x25	/* rw: xoff character */
     60 #define	SAB_TCR		0x26	/* rw: termination character */
     61 #define	SAB_DAFO	0x27	/* rw: data format */
     62 #define	SAB_RFC		0x28	/* rw: rfifo control register */
     63 #define	SAB_RBCL	0x2a	/* r: rx byte count low */
     64 #define	SAB_TBCL	0x2a	/* w: tx byte count low */
     65 #define	SAB_RBCH	0x2b	/* r: rx byte count high */
     66 #define	SAB_XBCH	0x2b	/* w: tx byte count high */
     67 #define	SAB_CCR0	0x2c	/* rw: channel configuration register 0 */
     68 #define	SAB_CCR1	0x2d	/* rw: channel configuration register 1 */
     69 #define	SAB_CCR2	0x2e	/* rw: channel configuration register 2 */
     70 #define	SAB_CCR3	0x2f	/* rw: channel configuration register 3 */
     71 #define	SAB_TSAX	0x30	/* w: time-slot assignment register tx */
     72 #define	SAB_TSAR	0x31	/* w: time-slot assignment register rx */
     73 #define	SAB_XCCR	0x32	/* w: tx channel capacity register */
     74 #define	SAB_RCCR	0x33	/* w: receive channel capacity register */
     75 #define	SAB_VSTR	0x34	/* r: version status */
     76 #define	SAB_BGR		0x34	/* w: baud rate generator */
     77 #define	SAB_TIC		0x35	/* w: transmit immediate character */
     78 #define	SAB_MXN		0x36	/* w: mask xon character */
     79 #define	SAB_MXF		0x37	/* w: mask xoff character */
     80 #define	SAB_GIS		0x38	/* r: global interrupt status */
     81 #define	SAB_IVA		0x38	/* w: interrupt vector address */
     82 #define	SAB_IPC		0x39	/* rw: interrupt port configuration */
     83 #define	SAB_ISR0	0x3a	/* r: interrupt status 0 */
     84 #define	SAB_IMR0	0x3a	/* w: interrupt mask 0 */
     85 #define	SAB_ISR1	0x3b	/* r: interrupt status 1 */
     86 #define	SAB_IMR1	0x3b	/* w: interrupt mask 1 */
     87 #define	SAB_PVR		0x3c	/* rw: port value register */
     88 #define	SAB_PIS		0x3d	/* r: port interrupt status */
     89 #define	SAB_PIM		0x3d	/* w: port interrupt mask */
     90 #define	SAB_PCR		0x3e	/* w: port configuration register */
     91 #define	SAB_CCR4	0x3f	/* rw: channel configuration register 4 */
     92 
     93 /* SAB_STAR: status register */
     94 #define	SAB_STAR_XDOV	0x80	/* transmit data overflow */
     95 #define	SAB_STAR_XFW	0x40	/* transmit fifo write enable */
     96 #define	SAB_STAR_RFNE	0x20	/* rfifo not empty */
     97 #define	SAB_STAR_FCS	0x10	/* flow control status */
     98 #define	SAB_STAR_TEC	0x08	/* tx immediate char is executing */
     99 #define	SAB_STAR_CEC	0x04	/* command is executing */
    100 #define	SAB_STAR_CTS	0x02	/* cts status: 0:inactive/high,1:active/low */
    101 
    102 /* SAB_CMDR: command register */
    103 #define	SAB_CMDR_RMC	0x80	/* receive message complete */
    104 #define	SAB_CMDR_RRES	0x40	/* receiver reset */
    105 #define	SAB_CMDR_RFRD	0x20	/* receive fifo read enable */
    106 #define	SAB_CMDR_STI	0x10	/* start timer */
    107 #define	SAB_CMDR_XF	0x08	/* transmit frame */
    108 #define	SAB_CMDR_XRES	0x01	/* transmit reset */
    109 
    110 /* SAB_MODE: mode register */
    111 #define	SAB_MODE_FRTS	0x40	/* flow control using rts */
    112 #define	SAB_MODE_FCTS	0x20	/* flow control using cts */
    113 #define	SAB_MODE_FLON	0x10	/* flow control on */
    114 #define	SAB_MODE_RAC	0x08	/* receiver active */
    115 #define	SAB_MODE_RTS	0x04	/* request to send */
    116 #define	SAB_MODE_TRS	0x02	/* timer resolution */
    117 #define	SAB_MODE_TLP	0x01	/* test loop */
    118 
    119 /* SAB_TIMR: timer register */
    120 #define	SAB_TIMR_CNT	0xe0	/* count mask */
    121 #define	SAB_TIMR_VAL	0x1f	/* value mask */
    122 
    123 /* SAB_DAFO: data format */
    124 #define	SAB_DAFO_XBRK	0x40	/* transmit break */
    125 #define	SAB_DAFO_STOP	0x20	/* stop bit: 0:1 bit, 1:2 bits */
    126 #define	SAB_DAFO_PAR1	0x10	/* parity 1, see below */
    127 #define	SAB_DAFO_PAR0	0x08	/* parity 0, see below */
    128 #define	SAB_DAFO_PARE	0x04	/* parity enable */
    129 #define	SAB_DAFO_CHL1	0x02	/* character length 1, see below */
    130 #define	SAB_DAFO_CHL0	0x01	/* character length 0, see below */
    131 
    132 #define	SAB_DAFO_CHL_CSIZE	(SAB_DAFO_CHL1|SAB_DAFO_CHL0)
    133 #define	SAB_DAFO_CHL_CS5	(SAB_DAFO_CHL1|SAB_DAFO_CHL0)
    134 #define	SAB_DAFO_CHL_CS6	(SAB_DAFO_CHL1)
    135 #define	SAB_DAFO_CHL_CS7	(SAB_DAFO_CHL0)
    136 #define	SAB_DAFO_CHL_CS8	(0)
    137 
    138 #define	SAB_DAFO_PARMASK	(SAB_DAFO_PAR1|SAB_DAFO_PAR0|SAB_DAFO_PARE)
    139 #define	SAB_DAFO_PAR_MARK	(SAB_DAFO_PAR1|SAB_DAFO_PAR0|SAB_DAFO_PARE)
    140 #define	SAB_DAFO_PAR_EVEN	(SAB_DAFO_PAR1|SAB_DAFO_PARE)
    141 #define	SAB_DAFO_PAR_ODD	(SAB_DAFO_PAR0|SAB_DAFO_PARE)
    142 #define	SAB_DAFO_PAR_SPACE	(SAB_DAFO_PARE)
    143 #define	SAB_DAFO_PAR_NONE	(0)
    144 
    145 /* SAB_RFC: rfifo control register */
    146 #define	SAB_RFC_DPS	0x40	/* disable parity storage */
    147 #define	SAB_RFC_DXS	0x20	/* disable storage of xon/xoff characters */
    148 #define	SAB_RFC_RFDF	0x10	/* rfifo data format: 0 data,1 data+stat */
    149 #define	SAB_RFC_RFTH1	0x08	/* rfifo threshold level 1, see below */
    150 #define	SAB_RFC_RFTH0	0x04	/* rfifo threshold level 0, see below */
    151 #define	SAB_RFC_TCDE	0x01	/* termination character detection enable */
    152 
    153 #define	SAB_RFC_RFTH_MASK	(SAB_RFC_RFTH1|SAB_RFC_RFTH0)
    154 #define	SAB_RFC_RFTH_32CHAR	(SAB_RFC_RFTH1|SAB_RFC_RFTH0)
    155 #define	SAB_RFC_RFTH_16CHAR	(SAB_RFC_RFTH1)
    156 #define	SAB_RFC_RFTH_4CHAR	(SAB_RFC_RFTH0)
    157 #define	SAB_RFC_RFTH_1CHAR	(0)
    158 
    159 /* SAB_RBCH: received byte count high */
    160 #define	SAB_RBCH_DMA	0x80	/* read back of XBCH DMA bit */
    161 #define	SAB_RBCH_CAS	0x20	/* read back of XBCH CAS bit */
    162 #define	SAB_RBCH_CNT	0x0f	/* ms 4 bits of rx byte count (not used) */
    163 
    164 /* SAB_XBCH: transmit byte count high */
    165 #define	SAB_XBCH_DMA	0x80	/* DMA mode: 1:DMA, 0:interrupt */
    166 #define	SAB_XBCH_CAS	0x20	/* carrier detect auto-start */
    167 #define	SAB_XBCH_XC	0x10	/* transmit continuously */
    168 #define	SAB_XBCH_CNT	0x0f	/* ms 4 bits of tx byte count */
    169 
    170 /* SAB_CCR0: channel configuration register 0 */
    171 #define	SAB_CCR0_PU	0x80	/* 0:power-down, 1:power-up */
    172 #define	SAB_CCR0_MCE	0x40	/* master clock enable */
    173 #define	SAB_CCR0_SC2	0x10	/* serial port config 2, see below */
    174 #define	SAB_CCR0_SC1	0x08	/* serial port config 1, see below */
    175 #define	SAB_CCR0_SC0	0x04	/* serial port config 0, see below */
    176 #define	SAB_CCR0_SM1	0x02	/* serial mode 1, see below */
    177 #define	SAB_CCR0_SM0	0x01	/* serial mode 0, see below */
    178 
    179 #define	SAB_CCR0_SC_MASK	(SAB_CCR0_SC2|SAB_CCR0_SC1|SAB_CCR0_SC0)
    180 #define	SAB_CCR0_SC_NRZ		(0)
    181 #define	SAB_CCR0_SC_NRZI	(SAB_CCR0_SC1)
    182 #define	SAB_CCR0_SC_FM0		(SAB_CCR0_SC2)
    183 #define	SAB_CCR0_SC_FM1		(SAB_CCR0_SC2|SAB_CCR0_SC0)
    184 #define	SAB_CCR0_SC_MANCHESTER	(SAB_CCR0_SC2|SAB_CCR0_SC1)
    185 
    186 #define	SAB_CCR0_SM_MASK	(SAB_CCR0_SM1|SAB_CCR0_SM0)
    187 #define	SAB_CCR0_SM_DLC		(0)
    188 #define	SAB_CCR0_SM_DLCLOOP	(SAB_CCR0_SM0)
    189 #define	SAB_CCR0_SM_BISYNC	(SAB_CCR0_SM1)
    190 #define	SAB_CCR0_SM_ASYNC	(SAB_CCR0_SM1|SAB_CCR0_SM0)
    191 
    192 /* SAB_CCR1: channel configuration register 1 */
    193 #define	SAB_CCR1_ODS	0x10	/* Output driver select:1:pushpull,0:odrain */
    194 #define	SAB_CCR1_BCR	0x08	/* bit clock rate: 1:async, 0:isochronous */
    195 #define	SAB_CCR1_CM2	0x04	/* clock mode 2, see below */
    196 #define	SAB_CCR1_CM1	0x02	/* clock mode 1, see below */
    197 #define	SAB_CCR1_CM0	0x01	/* clock mode 0, see below */
    198 
    199 #define	SAB_CCR1_CM_MASK	(SAB_CCR1_CM2|SAB_CCR1_CM1|SAB_CCR1_CM0)
    200 #define	SAB_CCR1_CM_7		(SAB_CCR1_CM2|SAB_CCR1_CM1|SAB_CCR1_CM0)
    201 
    202 /* SAB_CCR2: channel configuration register 2, depends on clock mode above */
    203 /* clock mode 0a, 1, 4, 5 */
    204 #define	SAB_CCR2_SOC1	0x80	/* special output 1, below */
    205 #define	SAB_CCR2_SOC0	0x40	/* special output 0, below */
    206 #define	SAB_CCR2_SOC_MASK	(SAB_CCR2_SOC1|SAB_CCR2_SOC0)
    207 #define	SAB_CCR2_SOC_RTSHIGH	(SAB_CCR2_SOC1)
    208 #define	SAB_CCR2_SOC_RTSNORM	(0)
    209 #define	SAB_CCR2_SOC_RTSRX	(SAB_CCR2_SOC1|SAB_CCR2_SOC0)
    210 /* clock mode 0b, 2, 3, 6, 7 */
    211 #define	SAB_CCR2_BR9	0x80	/* baud rate bit 9 */
    212 #define	SAB_CCR2_BR8	0x40	/* baud rate bit 8 */
    213 #define	SAB_CCR2_BDF	0x20	/* baud rate division factor: 0:1: 1:BRG */
    214 #define	SAB_CCR2_SSEL	0x10	/* clock source select */
    215 /* clock mode 5 */
    216 #define	SAB_CCR2_XCS0	0x20	/* tx clock shift, bit 0 */
    217 #define	SAB_CCR2_RCS0	0x10	/* rx clock shift, bit 0 */
    218 /* clock mode 0b, 2, 3, 4, 5, 6, 7 */
    219 #define	SAB_CCR2_TOE	0x08	/* tx clock output enable */
    220 /* clock mode 0a, 0b, 1, 2, 3, 4, 5, 6, 7 */
    221 #define	SAB_CCR2_RWX	0x04	/* read/write exchange (DMA mode only) */
    222 #define	SAB_CCR2_DIV	0x01	/* data inversion (nrz) */
    223 
    224 /* SAB_CCR3: channel configuration register 3 (v2 or greater) */
    225 #define	SAB_CCR3_PSD	0x01	/* dpll phase shift disable (nrz/nrzi) */
    226 
    227 /* SAB_TSAX: time-slot assignment register transmit (clock mode 5 only) */
    228 #define	SAB_TSAX_TSNX	0xfc	/* time-slot number transmit */
    229 #define	SAB_TSAX_XCS2	0x02	/* transmit clock shift bit 2 */
    230 #define	SAB_TSAX_XCS1	0x01	/* transmit clock shift bit 1 */
    231 
    232 /* SAB_TSAR: time-slot assignment register receive (clock mode 5 only) */
    233 #define	SAB_TSAR_TSNR	0xfc	/* time-slot number receive */
    234 #define	SAB_TSAR_RCS2	0x02	/* receive clock shift bit 2 */
    235 #define	SAB_TSAR_RCS1	0x01	/* receive clock shift bit 1 */
    236 
    237 /* SAB_VSTR: version status register */
    238 #define	SAB_VSTR_CD	0x80	/* carrier detect status */
    239 #define	SAB_VSTR_DPLA	0x40	/* dpll asynchronous */
    240 #define	SAB_VSTR_VMASK	0x0f	/* chip version mask: */
    241 #define	SAB_VSTR_V_1	0x00	/*   version 1 */
    242 #define	SAB_VSTR_V_2	0x01	/*   version 2 */
    243 #define	SAB_VSTR_V_32	0x02	/*   version 3.2 */
    244 
    245 /* SAB_GIS: global interrupt status register */
    246 #define	SAB_GIS_PI	0x80	/* universal port interrupt */
    247 #define	SAB_GIS_ISA1	0x08	/* interrupt status a1 */
    248 #define	SAB_GIS_ISA0	0x04	/* interrupt status a0 */
    249 #define	SAB_GIS_ISB1	0x02	/* interrupt status b1 */
    250 #define	SAB_GIS_ISB0	0x01	/* interrupt status b0 */
    251 
    252 /* SAB_IVA: interrupt vector address */
    253 #define	SAB_IVA_MASK	0xf8	/* interrupt vector address mask */
    254 
    255 /* SAB_IPC: interrupt port configuration */
    256 #define	SAB_IPC_VIS	0x80	/* masked interrupt bits visible */
    257 #define	SAB_IPC_SLAMASK	0x18	/* slave address mask */
    258 #define	SAB_IPC_CASM	0x04	/* cascading mode */
    259 #define	SAB_IPC_ICMASK	0x03	/* port config mask: */
    260 #define	SAB_IPC_ICOD	0x00	/*   open drain output */
    261 #define	SAB_IPC_ICPL	0x01	/*   push/pull active low output */
    262 #define	SAB_IPC_ICPH	0x03	/*   push/pull active high output */
    263 
    264 /* SAB_ISR0: interrupt status 0 */
    265 #define	SAB_ISR0_TCD	0x80	/* termination character detected */
    266 #define	SAB_ISR0_TIME	0x40	/* time-out limit exceeded */
    267 #define	SAB_ISR0_PERR	0x20	/* parity error */
    268 #define	SAB_ISR0_FERR	0x10	/* framing error */
    269 #define	SAB_ISR0_PLLA	0x08	/* dpll asynchronous */
    270 #define	SAB_ISR0_CDSC	0x04	/* carrier detect status change */
    271 #define	SAB_ISR0_RFO	0x02	/* rfifo overflow */
    272 #define	SAB_ISR0_RPF	0x01	/* receive pool full */
    273 
    274 /* SAB_ISR1: interrupt status 1 */
    275 #define	SAB_ISR1_BRK	0x80	/* break detected */
    276 #define	SAB_ISR1_BRKT	0x40	/* break terminated */
    277 #define	SAB_ISR1_ALLS	0x20	/* all sent */
    278 #define	SAB_ISR1_XOFF	0x10	/* xoff detected */
    279 #define	SAB_ISR1_TIN	0x08	/* timer interrupt */
    280 #define	SAB_ISR1_CSC	0x04	/* clear to send status change */
    281 #define	SAB_ISR1_XON	0x02	/* xon detected */
    282 #define	SAB_ISR1_XPR	0x01	/* transmit pool ready */
    283 
    284 /* SAB_IMR0: interrupt mask 0 */
    285 #define	SAB_IMR0_TCD	0x80	/* termination character detected */
    286 #define	SAB_IMR0_TIME	0x40	/* time-out limit exceeded */
    287 #define	SAB_IMR0_PERR	0x20	/* parity error */
    288 #define	SAB_IMR0_FERR	0x10	/* framing error */
    289 #define	SAB_IMR0_PLLA	0x08	/* dpll asynchronous */
    290 #define	SAB_IMR0_CDSC	0x04	/* carrier detect status change */
    291 #define	SAB_IMR0_RFO	0x02	/* rfifo overflow */
    292 #define	SAB_IMR0_RPF	0x01	/* receive pool full */
    293 
    294 /* SAB_ISR1: interrupt mask 1 */
    295 #define	SAB_IMR1_BRK	0x80	/* break detected */
    296 #define	SAB_IMR1_BRKT	0x40	/* break terminated */
    297 #define	SAB_IMR1_ALLS	0x20	/* all sent */
    298 #define	SAB_IMR1_XDU	0x10	/* xoff detected */
    299 #define	SAB_IMR1_TIN	0x08	/* timer interrupt */
    300 #define	SAB_IMR1_CSC	0x04	/* clear to send status change */
    301 #define	SAB_IMR1_XMR	0x02	/* xon detected */
    302 #define	SAB_IMR1_XPR	0x01	/* transmit pool ready */
    303 
    304 /* SAB_PVR: port value register */
    305 #define	SAB_PVR_DSR_A	0x01	/* port A DSR */
    306 #define	SAB_PVR_DTR_A	0x02	/* port A DTR */
    307 #define	SAB_PVR_DTR_B	0x04	/* port B DTR */
    308 #define	SAB_PVR_DSR_B	0x08	/* port B DSR */
    309 #define	SAB_PVR_MAGIC	0x10	/* dunno... */
    310 
    311 /* SAB_CCR4: channel configuration register 4 */
    312 #define	SAB_CCR4_MCK4	0x80	/* master clock divide by 4 */
    313 #define	SAB_CCR4_EBRG	0x40	/* enhanced baud rate generator mode */
    314 #define	SAB_CCR4_TST1	0x20	/* test pin */
    315 #define	SAB_CCR4_ICD	0x10	/* invert polarity of carrier detect */
    316 
    317 /* Receive status byte */
    318 #define	SAB_RSTAT_PE	0x80	/* parity error */
    319 #define	SAB_RSTAT_FE	0x40	/* framing error */
    320 #define	SAB_RSTAT_PAR	0x01	/* parity bit */
    321