1/* SPDX-License-Identifier: GPL-2.0 */
2/* sunsab.h: Register Definitions for the Siemens SAB82532 DUSCC
3 *
4 * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
5 */
6
7#ifndef _SUNSAB_H
8#define _SUNSAB_H
9
10struct sab82532_async_rd_regs {
11	u8	rfifo[0x20];	/* Receive FIFO				*/
12	u8	star;		/* Status Register			*/
13	u8	__pad1;
14	u8	mode;		/* Mode Register			*/
15	u8	timr;		/* Timer Register			*/
16	u8	xon;		/* XON Character			*/
17	u8	xoff;		/* XOFF Character			*/
18	u8	tcr;		/* Termination Character Register	*/
19	u8	dafo;		/* Data Format				*/
20	u8	rfc;		/* RFIFO Control Register		*/
21	u8	__pad2;
22	u8	rbcl;		/* Receive Byte Count Low		*/
23	u8	rbch;		/* Receive Byte Count High		*/
24	u8	ccr0;		/* Channel Configuration Register 0	*/
25	u8	ccr1;		/* Channel Configuration Register 1	*/
26	u8	ccr2;		/* Channel Configuration Register 2	*/
27	u8	ccr3;		/* Channel Configuration Register 3	*/
28	u8	__pad3[4];
29	u8	vstr;		/* Version Status Register		*/
30	u8	__pad4[3];
31	u8	gis;		/* Global Interrupt Status		*/
32	u8	ipc;		/* Interrupt Port Configuration		*/
33	u8	isr0;		/* Interrupt Status 0			*/
34	u8	isr1;		/* Interrupt Status 1			*/
35	u8	pvr;		/* Port Value Register			*/
36	u8	pis;		/* Port Interrupt Status		*/
37	u8	pcr;		/* Port Configuration Register		*/
38	u8	ccr4;		/* Channel Configuration Register 4	*/
39};
40
41struct sab82532_async_wr_regs {
42	u8	xfifo[0x20];	/* Transmit FIFO			*/
43	u8	cmdr;		/* Command Register			*/
44	u8	__pad1;
45	u8	mode;
46	u8	timr;
47	u8	xon;
48	u8	xoff;
49	u8	tcr;
50	u8	dafo;
51	u8	rfc;
52	u8	__pad2;
53	u8	xbcl;		/* Transmit Byte Count Low		*/
54	u8	xbch;		/* Transmit Byte Count High		*/
55	u8	ccr0;
56	u8	ccr1;
57	u8	ccr2;
58	u8	ccr3;
59	u8	tsax;		/* Time-Slot Assignment Reg. Transmit	*/
60	u8	tsar;		/* Time-Slot Assignment Reg. Receive	*/
61	u8	xccr;		/* Transmit Channel Capacity Register	*/
62	u8	rccr;		/* Receive Channel Capacity Register	*/
63	u8	bgr;		/* Baud Rate Generator Register		*/
64	u8	tic;		/* Transmit Immediate Character		*/
65	u8	mxn;		/* Mask XON Character			*/
66	u8	mxf;		/* Mask XOFF Character			*/
67	u8	iva;		/* Interrupt Vector Address		*/
68	u8	ipc;
69	u8	imr0;		/* Interrupt Mask Register 0		*/
70	u8	imr1;		/* Interrupt Mask Register 1		*/
71	u8	pvr;
72	u8	pim;		/* Port Interrupt Mask			*/
73	u8	pcr;
74	u8	ccr4;
75};
76
77struct sab82532_async_rw_regs {	/* Read/Write registers			*/
78	u8	__pad1[0x20];
79	u8	__pad2;
80	u8	__pad3;
81	u8	mode;
82	u8	timr;
83	u8	xon;
84	u8	xoff;
85	u8	tcr;
86	u8	dafo;
87	u8	rfc;
88	u8	__pad4;
89	u8	__pad5;
90	u8	__pad6;
91	u8	ccr0;
92	u8	ccr1;
93	u8	ccr2;
94	u8	ccr3;
95	u8	__pad7;
96	u8	__pad8;
97	u8	__pad9;
98	u8	__pad10;
99	u8	__pad11;
100	u8	__pad12;
101	u8	__pad13;
102	u8	__pad14;
103	u8	__pad15;
104	u8	ipc;
105	u8	__pad16;
106	u8	__pad17;
107	u8	pvr;
108	u8	__pad18;
109	u8	pcr;
110	u8	ccr4;
111};
112
113union sab82532_async_regs {
114	__volatile__ struct sab82532_async_rd_regs	r;
115	__volatile__ struct sab82532_async_wr_regs	w;
116	__volatile__ struct sab82532_async_rw_regs	rw;
117};
118
119union sab82532_irq_status {
120	unsigned short			 stat;
121	struct {
122		unsigned char		 isr0;
123		unsigned char		 isr1;
124	} sreg;
125};
126
127/* irqflags bits */
128#define SAB82532_ALLS			0x00000001
129#define SAB82532_XPR			0x00000002
130#define SAB82532_REGS_PENDING		0x00000004
131
132/* RFIFO Status Byte */
133#define SAB82532_RSTAT_PE		0x80
134#define SAB82532_RSTAT_FE		0x40
135#define SAB82532_RSTAT_PARITY		0x01
136
137/* Status Register (STAR) */
138#define SAB82532_STAR_XDOV		0x80
139#define SAB82532_STAR_XFW		0x40
140#define SAB82532_STAR_RFNE		0x20
141#define SAB82532_STAR_FCS		0x10
142#define SAB82532_STAR_TEC		0x08
143#define SAB82532_STAR_CEC		0x04
144#define SAB82532_STAR_CTS		0x02
145
146/* Command Register (CMDR) */
147#define SAB82532_CMDR_RMC		0x80
148#define SAB82532_CMDR_RRES		0x40
149#define SAB82532_CMDR_RFRD		0x20
150#define SAB82532_CMDR_STI		0x10
151#define SAB82532_CMDR_XF		0x08
152#define SAB82532_CMDR_XRES		0x01
153
154/* Mode Register (MODE) */
155#define SAB82532_MODE_FRTS		0x40
156#define SAB82532_MODE_FCTS		0x20
157#define SAB82532_MODE_FLON		0x10
158#define SAB82532_MODE_RAC		0x08
159#define SAB82532_MODE_RTS		0x04
160#define SAB82532_MODE_TRS		0x02
161#define SAB82532_MODE_TLP		0x01
162
163/* Timer Register (TIMR) */
164#define SAB82532_TIMR_CNT_MASK		0xe0
165#define SAB82532_TIMR_VALUE_MASK	0x1f
166
167/* Data Format (DAFO) */
168#define SAB82532_DAFO_XBRK		0x40
169#define SAB82532_DAFO_STOP		0x20
170#define SAB82532_DAFO_PAR_SPACE		0x00
171#define SAB82532_DAFO_PAR_ODD		0x08
172#define SAB82532_DAFO_PAR_EVEN		0x10
173#define SAB82532_DAFO_PAR_MARK		0x18
174#define SAB82532_DAFO_PARE		0x04
175#define SAB82532_DAFO_CHL8		0x00
176#define SAB82532_DAFO_CHL7		0x01
177#define SAB82532_DAFO_CHL6		0x02
178#define SAB82532_DAFO_CHL5		0x03
179
180/* RFIFO Control Register (RFC) */
181#define SAB82532_RFC_DPS		0x40
182#define SAB82532_RFC_DXS		0x20
183#define SAB82532_RFC_RFDF		0x10
184#define SAB82532_RFC_RFTH_1		0x00
185#define SAB82532_RFC_RFTH_4		0x04
186#define SAB82532_RFC_RFTH_16		0x08
187#define SAB82532_RFC_RFTH_32		0x0c
188#define SAB82532_RFC_TCDE		0x01
189
190/* Received Byte Count High (RBCH) */
191#define SAB82532_RBCH_DMA		0x80
192#define SAB82532_RBCH_CAS		0x20
193
194/* Transmit Byte Count High (XBCH) */
195#define SAB82532_XBCH_DMA		0x80
196#define SAB82532_XBCH_CAS		0x20
197#define SAB82532_XBCH_XC		0x10
198
199/* Channel Configuration Register 0 (CCR0) */
200#define SAB82532_CCR0_PU		0x80
201#define SAB82532_CCR0_MCE		0x40
202#define SAB82532_CCR0_SC_NRZ		0x00
203#define SAB82532_CCR0_SC_NRZI		0x08
204#define SAB82532_CCR0_SC_FM0		0x10
205#define SAB82532_CCR0_SC_FM1		0x14
206#define SAB82532_CCR0_SC_MANCH		0x18
207#define SAB82532_CCR0_SM_HDLC		0x00
208#define SAB82532_CCR0_SM_SDLC_LOOP	0x01
209#define SAB82532_CCR0_SM_BISYNC		0x02
210#define SAB82532_CCR0_SM_ASYNC		0x03
211
212/* Channel Configuration Register 1 (CCR1) */
213#define SAB82532_CCR1_ODS		0x10
214#define SAB82532_CCR1_BCR		0x08
215#define SAB82532_CCR1_CM_MASK		0x07
216
217/* Channel Configuration Register 2 (CCR2) */
218#define SAB82532_CCR2_SOC1		0x80
219#define SAB82532_CCR2_SOC0		0x40
220#define SAB82532_CCR2_BR9		0x80
221#define SAB82532_CCR2_BR8		0x40
222#define SAB82532_CCR2_BDF		0x20
223#define SAB82532_CCR2_SSEL		0x10
224#define SAB82532_CCR2_XCS0		0x20
225#define SAB82532_CCR2_RCS0		0x10
226#define SAB82532_CCR2_TOE		0x08
227#define SAB82532_CCR2_RWX		0x04
228#define SAB82532_CCR2_DIV		0x01
229
230/* Channel Configuration Register 3 (CCR3) */
231#define SAB82532_CCR3_PSD		0x01
232
233/* Time Slot Assignment Register Transmit (TSAX) */
234#define SAB82532_TSAX_TSNX_MASK		0xfc
235#define SAB82532_TSAX_XCS2		0x02	/* see also CCR2 */
236#define SAB82532_TSAX_XCS1		0x01
237
238/* Time Slot Assignment Register Receive (TSAR) */
239#define SAB82532_TSAR_TSNR_MASK		0xfc
240#define SAB82532_TSAR_RCS2		0x02	/* see also CCR2 */
241#define SAB82532_TSAR_RCS1		0x01
242
243/* Version Status Register (VSTR) */
244#define SAB82532_VSTR_CD		0x80
245#define SAB82532_VSTR_DPLA		0x40
246#define SAB82532_VSTR_VN_MASK		0x0f
247#define SAB82532_VSTR_VN_1		0x00
248#define SAB82532_VSTR_VN_2		0x01
249#define SAB82532_VSTR_VN_3_2		0x02
250
251/* Global Interrupt Status Register (GIS) */
252#define SAB82532_GIS_PI			0x80
253#define SAB82532_GIS_ISA1		0x08
254#define SAB82532_GIS_ISA0		0x04
255#define SAB82532_GIS_ISB1		0x02
256#define SAB82532_GIS_ISB0		0x01
257
258/* Interrupt Vector Address (IVA) */
259#define SAB82532_IVA_MASK		0xf1
260
261/* Interrupt Port Configuration (IPC) */
262#define SAB82532_IPC_VIS		0x80
263#define SAB82532_IPC_SLA1		0x10
264#define SAB82532_IPC_SLA0		0x08
265#define SAB82532_IPC_CASM		0x04
266#define SAB82532_IPC_IC_OPEN_DRAIN	0x00
267#define SAB82532_IPC_IC_ACT_LOW		0x01
268#define SAB82532_IPC_IC_ACT_HIGH	0x03
269
270/* Interrupt Status Register 0 (ISR0) */
271#define SAB82532_ISR0_TCD		0x80
272#define SAB82532_ISR0_TIME		0x40
273#define SAB82532_ISR0_PERR		0x20
274#define SAB82532_ISR0_FERR		0x10
275#define SAB82532_ISR0_PLLA		0x08
276#define SAB82532_ISR0_CDSC		0x04
277#define SAB82532_ISR0_RFO		0x02
278#define SAB82532_ISR0_RPF		0x01
279
280/* Interrupt Status Register 1 (ISR1) */
281#define SAB82532_ISR1_BRK		0x80
282#define SAB82532_ISR1_BRKT		0x40
283#define SAB82532_ISR1_ALLS		0x20
284#define SAB82532_ISR1_XOFF		0x10
285#define SAB82532_ISR1_TIN		0x08
286#define SAB82532_ISR1_CSC		0x04
287#define SAB82532_ISR1_XON		0x02
288#define SAB82532_ISR1_XPR		0x01
289
290/* Interrupt Mask Register 0 (IMR0) */
291#define SAB82532_IMR0_TCD		0x80
292#define SAB82532_IMR0_TIME		0x40
293#define SAB82532_IMR0_PERR		0x20
294#define SAB82532_IMR0_FERR		0x10
295#define SAB82532_IMR0_PLLA		0x08
296#define SAB82532_IMR0_CDSC		0x04
297#define SAB82532_IMR0_RFO		0x02
298#define SAB82532_IMR0_RPF		0x01
299
300/* Interrupt Mask Register 1 (IMR1) */
301#define SAB82532_IMR1_BRK		0x80
302#define SAB82532_IMR1_BRKT		0x40
303#define SAB82532_IMR1_ALLS		0x20
304#define SAB82532_IMR1_XOFF		0x10
305#define SAB82532_IMR1_TIN		0x08
306#define SAB82532_IMR1_CSC		0x04
307#define SAB82532_IMR1_XON		0x02
308#define SAB82532_IMR1_XPR		0x01
309
310/* Port Interrupt Status Register (PIS) */
311#define SAB82532_PIS_SYNC_B		0x08
312#define SAB82532_PIS_DTR_B		0x04
313#define SAB82532_PIS_DTR_A		0x02
314#define SAB82532_PIS_SYNC_A		0x01
315
316/* Channel Configuration Register 4 (CCR4) */
317#define SAB82532_CCR4_MCK4		0x80
318#define SAB82532_CCR4_EBRG		0x40
319#define SAB82532_CCR4_TST1		0x20
320#define SAB82532_CCR4_ICD		0x10
321
322
323#endif /* !(_SUNSAB_H) */
324