xref: /netbsd-src/sys/arch/mips/rmi/rmixl_com.c (revision f5ab653ca02172379db448c26d81f973561b3bcc)
1 /* $Id: rmixl_com.c,v 1.8 2018/12/11 06:34:00 thorpej Exp $ */
2 /*-
3  * Copyright (c) 2006 Urbana-Champaign Independent Media Center.
4  * Copyright (c) 2006 Garrett D'Amore.
5  * All rights reserved.
6  *
7  * Portions of this code were written by Garrett D'Amore for the
8  * Champaign-Urbana Community Wireless Network Project.
9  *
10  * Redistribution and use in source and binary forms, with or
11  * without modification, are permitted provided that the following
12  * conditions are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above
16  *    copyright notice, this list of conditions and the following
17  *    disclaimer in the documentation and/or other materials provided
18  *    with the distribution.
19  * 3. All advertising materials mentioning features or use of this
20  *    software must display the following acknowledgements:
21  *      This product includes software developed by the Urbana-Champaign
22  *      Independent Media Center.
23  *	This product includes software developed by Garrett D'Amore.
24  * 4. Urbana-Champaign Independent Media Center's name and Garrett
25  *    D'Amore's name may not be used to endorse or promote products
26  *    derived from this software without specific prior written permission.
27  *
28  * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
29  * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
30  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
31  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
33  * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
34  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
36  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
37  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
40  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41  */
42 
43 /*-
44  * Copyright (c) 1998 The NetBSD Foundation, Inc.
45  * All rights reserved.
46  *
47  * This code is derived from software contributed to The NetBSD Foundation
48  * by Charles M. Hannum.
49  *
50  * Redistribution and use in source and binary forms, with or without
51  * modification, are permitted provided that the following conditions
52  * are met:
53  * 1. Redistributions of source code must retain the above copyright
54  *    notice, this list of conditions and the following disclaimer.
55  * 2. Redistributions in binary form must reproduce the above copyright
56  *    notice, this list of conditions and the following disclaimer in the
57  *    documentation and/or other materials provided with the distribution.
58  *
59  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
60  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
61  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
62  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
63  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
64  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
65  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
66  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
67  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
68  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
69  * POSSIBILITY OF SUCH DAMAGE.
70  */
71 
72 /*-
73  * Copyright (c) 1991 The Regents of the University of California.
74  * All rights reserved.
75  *
76  * Redistribution and use in source and binary forms, with or without
77  * modification, are permitted provided that the following conditions
78  * are met:
79  * 1. Redistributions of source code must retain the above copyright
80  *    notice, this list of conditions and the following disclaimer.
81  * 2. Redistributions in binary form must reproduce the above copyright
82  *    notice, this list of conditions and the following disclaimer in the
83  *    documentation and/or other materials provided with the distribution.
84  * 3. Neither the name of the University nor the names of its contributors
85  *    may be used to endorse or promote products derived from this software
86  *    without specific prior written permission.
87  *
88  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
89  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
90  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
91  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
92  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
93  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
94  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
95  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
96  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
97  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
98  * SUCH DAMAGE.
99  *
100  *	@(#)com.c	7.5 (Berkeley) 5/16/91
101  */
102 
103 #include <sys/cdefs.h>
104 __KERNEL_RCSID(0, "$NetBSD: rmixl_com.c,v 1.8 2018/12/11 06:34:00 thorpej Exp $");
105 
106 #include <sys/param.h>
107 #include <sys/systm.h>
108 #include <sys/device.h>
109 #include <sys/kernel.h>
110 #include <sys/termios.h>
111 #include <sys/ttydefaults.h>
112 #include <sys/types.h>
113 
114 #include <sys/bus.h>
115 
116 #include <dev/cons.h>
117 #include <dev/ic/comreg.h>
118 #include <dev/ic/comvar.h>
119 
120 #include <mips/cpuregs.h>
121 
122 #include <mips/rmi/rmixlvar.h>
123 #include <mips/rmi/rmixl_intr.h>
124 #include <mips/rmi/rmixl_obiovar.h>
125 #include <mips/rmi/rmixl_comvar.h>
126 
127 /* span of UART regs in bytes */
128 #define RMIXL_IO_DEV_UART_SIZE	(COM_NPORTS * sizeof(uint32_t))
129 
130 struct rmixl_com_softc {
131 	struct com_softc sc_com;
132 };
133 
134 static void rmixl_com_init_regs(struct com_regs *, bus_space_tag_t,
135 				bus_space_handle_t, bus_addr_t);
136 static int rmixl_com_match(device_t, cfdata_t , void *);
137 static void rmixl_com_attach(device_t, device_t, void *);
138 
139 CFATTACH_DECL_NEW(com_rmixl, sizeof(struct rmixl_com_softc),
140     rmixl_com_match, rmixl_com_attach, NULL, NULL);
141 
142 volatile int32_t *com0addr = (int32_t *)
143 	MIPS_PHYS_TO_KSEG1(RMIXL_IO_DEV_PBASE + RMIXL_IO_DEV_UART_1);
144 
145 extern int comcnfreq;
146 extern int comcnspeed;
147 
148 void
rmixl_putchar_init(uint64_t io_pbase)149 rmixl_putchar_init(uint64_t io_pbase)
150 {
151 	int rate;
152 	extern int comspeed(long, long, int);
153 
154 	com0addr = (uint32_t *)
155 		MIPS_PHYS_TO_KSEG1(io_pbase + RMIXL_IO_DEV_UART_1);
156 
157 	if (comcnfreq != -1) {
158 		rate = comspeed(comcnspeed, comcnfreq, COM_TYPE_NORMAL);
159 		if (rate < 0)
160 			return;					/* XXX */
161 
162 		com0addr[com_ier] = 0;
163 		com0addr[com_lctl] = htobe32(LCR_DLAB);
164 		com0addr[com_dlbl] = htobe32(rate & 0xff);
165 		com0addr[com_dlbh] = htobe32(rate >> 8);
166 		com0addr[com_lctl] = htobe32(LCR_8BITS);	/* XXX */
167 		com0addr[com_mcr]  = htobe32(MCR_DTR|MCR_RTS);
168 		com0addr[com_fifo] = htobe32(
169 			FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_1);
170 	}
171 }
172 
173 
174 void
rmixl_putchar(char c)175 rmixl_putchar(char c)
176 {
177 	int timo = 150000;
178 
179 	while ((be32toh(com0addr[com_lsr]) & LSR_TXRDY) == 0)
180 		if (--timo == 0)
181 			break;
182 
183 	com0addr[com_data] = htobe32((uint32_t)c);
184 
185 	while ((be32toh(com0addr[com_lsr]) & LSR_TSRE) == 0)
186 		if (--timo == 0)
187 			break;
188 }
189 
190 void
rmixl_puts(const char * restrict s)191 rmixl_puts(const char *restrict s)
192 {
193 	char c;
194 
195 	while ((c = *s++) != 0)
196 		rmixl_putchar(c);
197 }
198 
199 static char hexc[] = "0123456789abcdef";
200 
201 #define RMIXL_PUTHEX 						\
202 	u_int shift = sizeof(val) * 8;				\
203 	rmixl_putchar('0');					\
204 	rmixl_putchar('x');					\
205 	do {							\
206 		shift -= 4;					\
207 		rmixl_putchar(hexc[(val >> shift) & 0xf]);	\
208 	} while(shift != 0)
209 
210 void
rmixl_puthex32(uint32_t val)211 rmixl_puthex32(uint32_t val)
212 {
213 	RMIXL_PUTHEX;
214 }
215 
216 void
rmixl_puthex64(uint64_t val)217 rmixl_puthex64(uint64_t val)
218 {
219 	RMIXL_PUTHEX;
220 }
221 
222 int
rmixl_com_match(device_t parent,cfdata_t cf,void * aux)223 rmixl_com_match(device_t parent, cfdata_t cf, void *aux)
224 {
225 	struct obio_attach_args *obio = aux;
226 	bus_space_tag_t bst;
227 	bus_space_handle_t ioh;
228 	bus_addr_t addr;
229 	bus_size_t size;
230 	struct com_regs	regs;
231 	int rv;
232 
233 	bst = obio->obio_eb_bst;
234 	addr = obio->obio_addr;
235 	size = (bus_size_t)RMIXL_IO_DEV_UART_SIZE;
236 
237 	if (com_is_console(bst, addr, &regs.cr_ioh))
238 		return 1;
239 
240 	if (bus_space_map(bst, addr, size, 0, &ioh))
241 		return 0;		/* FAIL */
242 
243 	rmixl_com_init_regs(&regs, bst, ioh, addr);
244 
245 	rv = com_probe_subr(&regs);
246 
247 	bus_space_unmap(bst, ioh, size);
248 
249 	return rv;
250 }
251 
252 void
rmixl_com_attach(device_t parent,device_t self,void * aux)253 rmixl_com_attach(device_t parent, device_t self, void *aux)
254 {
255 	struct rmixl_com_softc *rsc = device_private(self);
256 	struct com_softc *sc = &rsc->sc_com;
257 	struct obio_attach_args *obio = aux;
258 	bus_space_tag_t bst;
259 	bus_space_handle_t ioh;
260 	bus_addr_t addr;
261 	bus_size_t size;
262 
263 	sc->sc_dev = self;
264 	sc->sc_frequency = comcnfreq;
265 
266 	bst = obio->obio_eb_bst;
267 	addr = obio->obio_addr;
268 	size = (bus_size_t)RMIXL_IO_DEV_UART_SIZE;
269 
270 	if (!com_is_console(bst, addr, &ioh)
271 	&&  bus_space_map(bst, addr, size, 0, &ioh) != 0) {
272 		aprint_error(": can't map registers\n");
273 		return;
274 	}
275 
276 	rmixl_com_init_regs(&sc->sc_regs, bst, ioh, addr);
277 
278 	com_attach_subr(sc);
279 
280 	rmixl_intr_establish(obio->obio_intr, obio->obio_tmsk,
281 		IPL_VM, RMIXL_TRIG_LEVEL, RMIXL_POLR_HIGH,
282 		comintr, sc, true);
283 
284 }
285 
286 void
rmixl_com_init_regs(struct com_regs * regsp,bus_space_tag_t st,bus_space_handle_t sh,bus_addr_t addr)287 rmixl_com_init_regs(struct com_regs *regsp, bus_space_tag_t st,
288 		    bus_space_handle_t sh, bus_addr_t addr)
289 {
290 
291 	com_init_regs_stride(regsp, st, sh, addr, 2);
292 }
293 
294 void
rmixl_com_cnattach(bus_addr_t addr,int speed,int freq,int type,tcflag_t mode)295 rmixl_com_cnattach(bus_addr_t addr, int speed, int freq,
296 	int type, tcflag_t mode)
297 {
298 	bus_space_tag_t bst;
299 	struct com_regs	regs;
300 
301 	bst = (bus_space_tag_t)&rmixl_configuration.rc_obio_eb_memt;
302 
303 	rmixl_com_init_regs(&regs, bst, 0, addr);
304 
305 	comcnattach1(&regs, speed, freq, type, mode);
306 }
307