1 /* $NetBSD: com_mv.c,v 1.12 2019/01/27 02:08:42 pgoyette Exp $ */
2 /*
3 * Copyright (c) 2007, 2010 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: com_mv.c,v 1.12 2019/01/27 02:08:42 pgoyette Exp $");
30
31 #include <sys/param.h>
32 #include <sys/bus.h>
33 #include <sys/device.h>
34 #include <sys/errno.h>
35 #include <sys/termios.h>
36
37 #include <dev/marvell/gtvar.h>
38 #include <dev/marvell/marvellreg.h>
39 #include <dev/marvell/marvellvar.h>
40
41 #include <dev/ic/comvar.h>
42
43 #include <prop/proplib.h>
44
45 #define MVUART_SIZE 0x20
46
47
48 static int mvuart_match(device_t, struct cfdata *, void *);
49 static void mvuart_attach(device_t, device_t, void *);
50
51 CFATTACH_DECL_NEW(mvuart_gt, sizeof(struct com_softc),
52 mvuart_match, mvuart_attach, NULL, NULL);
53 CFATTACH_DECL_NEW(mvuart_mbus, sizeof(struct com_softc),
54 mvuart_match, mvuart_attach, NULL, NULL);
55
56 static void
mvuart_init_regs(struct com_regs * regs,bus_space_tag_t tag,bus_space_handle_t hdl,bus_addr_t addr)57 mvuart_init_regs(struct com_regs *regs, bus_space_tag_t tag,
58 bus_space_handle_t hdl, bus_addr_t addr)
59 {
60
61 com_init_regs_stride(regs, tag, hdl, addr, 2);
62 }
63
64
65 /* ARGSUSED */
66 static int
mvuart_match(device_t parent,struct cfdata * match,void * aux)67 mvuart_match(device_t parent, struct cfdata *match, void *aux)
68 {
69 struct marvell_attach_args *mva = aux;
70 struct com_regs regs;
71 bus_space_handle_t ioh;
72
73 if (strcmp(mva->mva_name, match->cf_name) != 0)
74 return 0;
75 if (mva->mva_offset == MVA_OFFSET_DEFAULT ||
76 mva->mva_irq == MVA_IRQ_DEFAULT)
77 return 0;
78
79 if (com_is_console(mva->mva_iot, mva->mva_addr + mva->mva_offset, NULL))
80 goto console;
81
82 if (bus_space_subregion(mva->mva_iot, mva->mva_ioh, mva->mva_offset,
83 MVUART_SIZE, &ioh))
84 return 0;
85 mvuart_init_regs(®s, mva->mva_iot, ioh, mva->mva_offset);
86 if (!com_probe_subr(®s))
87 return 0;
88
89 console:
90 mva->mva_size = MVUART_SIZE;
91 return 1;
92 }
93
94 /* ARGSUSED */
95 static void
mvuart_attach(device_t parent,device_t self,void * aux)96 mvuart_attach(device_t parent, device_t self, void *aux)
97 {
98 struct com_softc *sc = device_private(self);
99 struct marvell_attach_args *mva = aux;
100 bus_space_tag_t iot;
101 bus_space_handle_t ioh;
102 prop_dictionary_t dict = device_properties(self);
103
104 sc->sc_dev = self;
105
106 if (!prop_dictionary_get_uint32(dict, "frequency", &sc->sc_frequency)) {
107 aprint_error(": no frequency property\n");
108 return;
109 }
110
111 iot = mva->mva_iot;
112 if (!com_is_console(iot, mva->mva_addr + mva->mva_offset, &ioh)) {
113 if (bus_space_subregion(iot, mva->mva_ioh, mva->mva_offset,
114 mva->mva_size, &ioh)) {
115 aprint_error(": can't map registers\n");
116 return;
117 }
118 }
119 mvuart_init_regs(&sc->sc_regs,
120 iot, ioh, mva->mva_addr + mva->mva_offset);
121
122 com_attach_subr(sc);
123
124 marvell_intr_establish(mva->mva_irq, IPL_SERIAL, comintr, sc);
125 }
126
127 int mvuart_cnattach(bus_space_tag_t, bus_addr_t, int, uint32_t, int);
128
129 int
mvuart_cnattach(bus_space_tag_t iot,bus_addr_t addr,int baud,uint32_t sysfreq,int mode)130 mvuart_cnattach(bus_space_tag_t iot, bus_addr_t addr, int baud,
131 uint32_t sysfreq, int mode)
132 {
133 struct com_regs regs;
134
135 mvuart_init_regs(®s, iot, 0x0, addr);
136
137 return comcnattach1(®s, baud, sysfreq, COM_TYPE_16550_NOERS, mode);
138 }
139