pq3duart.c revision 1.1.2.1 1 1.1.2.1 matt /* $NetBSD: pq3duart.c,v 1.1.2.1 2011/01/07 01:26:19 matt Exp $ */
2 1.1.2.1 matt /*-
3 1.1.2.1 matt * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
4 1.1.2.1 matt * All rights reserved.
5 1.1.2.1 matt *
6 1.1.2.1 matt * This code is derived from software contributed to The NetBSD Foundation
7 1.1.2.1 matt * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
8 1.1.2.1 matt * Agency and which was developed by Matt Thomas of 3am Software Foundry.
9 1.1.2.1 matt *
10 1.1.2.1 matt * This material is based upon work supported by the Defense Advanced Research
11 1.1.2.1 matt * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
12 1.1.2.1 matt * Contract No. N66001-09-C-2073.
13 1.1.2.1 matt * Approved for Public Release, Distribution Unlimited
14 1.1.2.1 matt *
15 1.1.2.1 matt * Redistribution and use in source and binary forms, with or without
16 1.1.2.1 matt * modification, are permitted provided that the following conditions
17 1.1.2.1 matt * are met:
18 1.1.2.1 matt * 1. Redistributions of source code must retain the above copyright
19 1.1.2.1 matt * notice, this list of conditions and the following disclaimer.
20 1.1.2.1 matt * 2. Redistributions in binary form must reproduce the above copyright
21 1.1.2.1 matt * notice, this list of conditions and the following disclaimer in the
22 1.1.2.1 matt * documentation and/or other materials provided with the distribution.
23 1.1.2.1 matt *
24 1.1.2.1 matt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
25 1.1.2.1 matt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 1.1.2.1 matt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 1.1.2.1 matt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
28 1.1.2.1 matt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 1.1.2.1 matt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 1.1.2.1 matt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 1.1.2.1 matt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 1.1.2.1 matt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 1.1.2.1 matt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 1.1.2.1 matt * POSSIBILITY OF SUCH DAMAGE.
35 1.1.2.1 matt */
36 1.1.2.1 matt
37 1.1.2.1 matt #include <sys/cdefs.h>
38 1.1.2.1 matt
39 1.1.2.1 matt #include <sys/param.h>
40 1.1.2.1 matt #include <sys/cpu.h>
41 1.1.2.1 matt #include <sys/device.h>
42 1.1.2.1 matt #include <sys/tty.h>
43 1.1.2.1 matt
44 1.1.2.1 matt #include "ioconf.h"
45 1.1.2.1 matt
46 1.1.2.1 matt #include <sys/intr.h>
47 1.1.2.1 matt #include <sys/bus.h>
48 1.1.2.1 matt
49 1.1.2.1 matt #include <dev/ic/comreg.h>
50 1.1.2.1 matt #include <dev/ic/comvar.h>
51 1.1.2.1 matt
52 1.1.2.1 matt #include <powerpc/booke/cpuvar.h>
53 1.1.2.1 matt #include <powerpc/booke/e500var.h>
54 1.1.2.1 matt #include <powerpc/booke/e500reg.h>
55 1.1.2.1 matt
56 1.1.2.1 matt struct pq3duart_softc {
57 1.1.2.1 matt device_t dsc_dev;
58 1.1.2.1 matt struct com_softc *dsc_sc[2];
59 1.1.2.1 matt bus_space_tag_t dsc_memt;
60 1.1.2.1 matt bus_addr_t dsc_base;
61 1.1.2.1 matt void *dsc_ih;
62 1.1.2.1 matt };
63 1.1.2.1 matt
64 1.1.2.1 matt struct pq3duart_attach_args {
65 1.1.2.1 matt const char *da_busname;
66 1.1.2.1 matt bus_space_tag_t da_memt;
67 1.1.2.1 matt bus_addr_t da_addr;
68 1.1.2.1 matt bus_addr_t da_size;
69 1.1.2.1 matt u_int da_port;
70 1.1.2.1 matt };
71 1.1.2.1 matt
72 1.1.2.1 matt static int pq3duart_match(device_t, cfdata_t, void *);
73 1.1.2.1 matt static void pq3duart_attach(device_t, device_t, void *);
74 1.1.2.1 matt static int com_pq3duart_match(device_t, cfdata_t, void *);
75 1.1.2.1 matt static void com_pq3duart_attach(device_t, device_t, void *);
76 1.1.2.1 matt
77 1.1.2.1 matt CFATTACH_DECL_NEW(pq3duart, sizeof(struct pq3duart_softc),
78 1.1.2.1 matt pq3duart_match, pq3duart_attach, NULL, NULL);
79 1.1.2.1 matt
80 1.1.2.1 matt CFATTACH_DECL_NEW(com_pq3duart, sizeof(struct com_softc),
81 1.1.2.1 matt com_pq3duart_match, com_pq3duart_attach, NULL, NULL);
82 1.1.2.1 matt
83 1.1.2.1 matt static int
84 1.1.2.1 matt pq3duart_match(device_t parent, cfdata_t cf, void *aux)
85 1.1.2.1 matt {
86 1.1.2.1 matt
87 1.1.2.1 matt if (!e500_cpunode_submatch(parent, cf, cf->cf_name, aux))
88 1.1.2.1 matt return 0;
89 1.1.2.1 matt
90 1.1.2.1 matt return 1;
91 1.1.2.1 matt }
92 1.1.2.1 matt
93 1.1.2.1 matt static int
94 1.1.2.1 matt com_pq3duart_match(device_t parent, cfdata_t cfdata, void *aux)
95 1.1.2.1 matt {
96 1.1.2.1 matt struct pq3duart_softc * const dsc = device_private(parent);
97 1.1.2.1 matt struct pq3duart_attach_args * const da = aux;
98 1.1.2.1 matt struct com_regs regs;
99 1.1.2.1 matt
100 1.1.2.1 matt if ((da->da_port != 1 && da->da_port != 2)
101 1.1.2.1 matt || dsc->dsc_sc[da->da_port-1] != NULL)
102 1.1.2.1 matt return 0;
103 1.1.2.1 matt
104 1.1.2.1 matt bus_space_tag_t memt = da->da_memt;
105 1.1.2.1 matt bus_addr_t addr = da->da_addr;
106 1.1.2.1 matt bus_addr_t size = da->da_size;
107 1.1.2.1 matt bus_space_handle_t memh;
108 1.1.2.1 matt
109 1.1.2.1 matt if (com_is_console(memt, addr, &memh))
110 1.1.2.1 matt return 1;
111 1.1.2.1 matt
112 1.1.2.1 matt if (bus_space_map(memt, addr, size, 0, &memh))
113 1.1.2.1 matt return 0;
114 1.1.2.1 matt
115 1.1.2.1 matt COM_INIT_REGS(regs, memt, memh, addr);
116 1.1.2.1 matt
117 1.1.2.1 matt int rv = com_probe_subr(®s);
118 1.1.2.1 matt
119 1.1.2.1 matt bus_space_unmap(memt, memh, size);
120 1.1.2.1 matt
121 1.1.2.1 matt return rv;
122 1.1.2.1 matt }
123 1.1.2.1 matt
124 1.1.2.1 matt static int
125 1.1.2.1 matt pq3duart_intr(void *arg)
126 1.1.2.1 matt {
127 1.1.2.1 matt struct pq3duart_softc * const dsc = arg;
128 1.1.2.1 matt int rv = 0;
129 1.1.2.1 matt
130 1.1.2.1 matt if (dsc->dsc_sc[0] != NULL)
131 1.1.2.1 matt rv += comintr(dsc->dsc_sc[0]);
132 1.1.2.1 matt if (dsc->dsc_sc[1] != NULL)
133 1.1.2.1 matt rv += comintr(dsc->dsc_sc[1]);
134 1.1.2.1 matt
135 1.1.2.1 matt return rv;
136 1.1.2.1 matt }
137 1.1.2.1 matt
138 1.1.2.1 matt static int
139 1.1.2.1 matt pq3duart_print(void *aux, const char *pnp)
140 1.1.2.1 matt {
141 1.1.2.1 matt struct pq3duart_attach_args * const da = aux;
142 1.1.2.1 matt
143 1.1.2.1 matt if (pnp != NULL)
144 1.1.2.1 matt return QUIET;
145 1.1.2.1 matt
146 1.1.2.1 matt aprint_normal(" port %d", da->da_port);
147 1.1.2.1 matt
148 1.1.2.1 matt return UNCONF;
149 1.1.2.1 matt }
150 1.1.2.1 matt
151 1.1.2.1 matt static void
152 1.1.2.1 matt pq3duart_attach(device_t parent, device_t self, void *aux)
153 1.1.2.1 matt {
154 1.1.2.1 matt struct cpunode_softc * const psc = device_private(parent);
155 1.1.2.1 matt struct pq3duart_softc * const dsc = device_private(self);
156 1.1.2.1 matt struct cpunode_attach_args * const cna = aux;
157 1.1.2.1 matt struct cpunode_locators * const cnl = &cna->cna_locs;
158 1.1.2.1 matt struct pq3duart_attach_args da;
159 1.1.2.1 matt u_int nports = cnl->cnl_size / DUART_SIZE;
160 1.1.2.1 matt
161 1.1.2.1 matt psc->sc_children |= cna->cna_childmask;
162 1.1.2.1 matt dsc->dsc_dev = self;
163 1.1.2.1 matt
164 1.1.2.1 matt aprint_normal(": %u ports\n", nports);
165 1.1.2.1 matt
166 1.1.2.1 matt for (u_int port = 1; port <= min(2, nports); port++) {
167 1.1.2.1 matt da.da_memt = cna->cna_memt;
168 1.1.2.1 matt da.da_port = port;
169 1.1.2.1 matt da.da_addr = cnl->cnl_addr + (port - 1) * DUART_SIZE;
170 1.1.2.1 matt da.da_size = COM_NPORTS;
171 1.1.2.1 matt (void)config_found_sm_loc(self, "duart", NULL,
172 1.1.2.1 matt &da, pq3duart_print, NULL);
173 1.1.2.1 matt }
174 1.1.2.1 matt
175 1.1.2.1 matt if (dsc->dsc_sc[0] != NULL || dsc->dsc_sc[1] != NULL) {
176 1.1.2.1 matt dsc->dsc_ih = intr_establish(cnl->cnl_intrs[0], IPL_SERIAL,
177 1.1.2.1 matt IST_ONCHIP, pq3duart_intr, dsc);
178 1.1.2.1 matt if (dsc->dsc_ih == NULL)
179 1.1.2.1 matt aprint_error_dev(self,
180 1.1.2.1 matt "failed to establish interrupt %d\n",
181 1.1.2.1 matt cnl->cnl_intrs[0]);
182 1.1.2.1 matt else
183 1.1.2.1 matt aprint_normal_dev(self,
184 1.1.2.1 matt "interrupting on irq %d\n",
185 1.1.2.1 matt cnl->cnl_intrs[0]);
186 1.1.2.1 matt }
187 1.1.2.1 matt }
188 1.1.2.1 matt
189 1.1.2.1 matt static void
190 1.1.2.1 matt com_pq3duart_attach(device_t parent, device_t self, void *aux)
191 1.1.2.1 matt {
192 1.1.2.1 matt struct pq3duart_softc * const dsc = device_private(parent);
193 1.1.2.1 matt struct com_softc * const sc = device_private(self);
194 1.1.2.1 matt struct pq3duart_attach_args * const da = aux;
195 1.1.2.1 matt
196 1.1.2.1 matt dsc->dsc_sc[da->da_port-1] = sc;
197 1.1.2.1 matt sc->sc_dev = self;
198 1.1.2.1 matt sc->sc_frequency = (int) board_info_get_number("bus-frequency");
199 1.1.2.1 matt
200 1.1.2.1 matt bus_space_tag_t memt = da->da_memt;
201 1.1.2.1 matt bus_addr_t addr = da->da_addr;
202 1.1.2.1 matt bus_addr_t size = da->da_size;
203 1.1.2.1 matt bus_space_handle_t memh;
204 1.1.2.1 matt
205 1.1.2.1 matt if (!com_is_console(memt, addr, &memh)) {
206 1.1.2.1 matt int error = bus_space_map(memt, addr, size, 0, &memh);
207 1.1.2.1 matt if (error) {
208 1.1.2.1 matt aprint_error(": failed to map registers: %d\n", error);
209 1.1.2.1 matt return;
210 1.1.2.1 matt }
211 1.1.2.1 matt }
212 1.1.2.1 matt
213 1.1.2.1 matt COM_INIT_REGS(sc->sc_regs, memt, memh, addr);
214 1.1.2.1 matt sc->sc_regs.cr_nports = size;
215 1.1.2.1 matt
216 1.1.2.1 matt com_attach_subr(sc);
217 1.1.2.1 matt
218 1.1.2.1 matt }
219