1 | /* $NetBSD: com_puc.c,v 1.23 2014/05/23 14:16:39 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1998 Christopher G. Demetriou. 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 | * 3. All advertising materials mentioning features or use of this software |
15 | * must display the following acknowledgement: |
16 | * This product includes software developed by Christopher G. Demetriou |
17 | * for the NetBSD Project. |
18 | * 4. The name of the author may not be used to endorse or promote products |
19 | * derived from this software without specific prior written permission |
20 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
32 | |
33 | /* |
34 | * Machine-independent ns16x50 serial port ('com') driver attachment to |
35 | * "PCI Universal Communications" controller driver. |
36 | * |
37 | * Author: Christopher G. Demetriou, May 17, 1998. |
38 | */ |
39 | |
40 | #include <sys/cdefs.h> |
41 | __KERNEL_RCSID(0, "$NetBSD: com_puc.c,v 1.23 2014/05/23 14:16:39 msaitoh Exp $" ); |
42 | |
43 | #include <sys/param.h> |
44 | #include <sys/systm.h> |
45 | #include <sys/device.h> |
46 | #include <sys/tty.h> |
47 | |
48 | #include <sys/bus.h> |
49 | |
50 | #include <dev/pci/pcivar.h> |
51 | #include <dev/pci/pucvar.h> |
52 | #include <dev/ic/comreg.h> |
53 | #include <dev/ic/comvar.h> |
54 | #include <dev/pci/cybervar.h> |
55 | |
56 | struct com_puc_softc { |
57 | struct com_softc sc_com; /* real "com" softc */ |
58 | |
59 | /* puc-specific goo. */ |
60 | void *sc_ih; /* interrupt handler */ |
61 | }; |
62 | |
63 | /* Interface field in PCI Class register */ |
64 | static const char *serialtype[] = { |
65 | "Generic XT" , |
66 | "16450" , |
67 | "16550" , |
68 | "16650" , |
69 | "16750" , |
70 | "16850" , |
71 | "16950" , |
72 | }; |
73 | |
74 | static int |
75 | com_puc_probe(device_t parent, cfdata_t match, void *aux) |
76 | { |
77 | struct puc_attach_args *aa = aux; |
78 | |
79 | /* |
80 | * Locators already matched, just check the type. |
81 | */ |
82 | if (aa->type != PUC_PORT_TYPE_COM) |
83 | return (0); |
84 | |
85 | return (1); |
86 | } |
87 | |
88 | static void |
89 | com_puc_attach(device_t parent, device_t self, void *aux) |
90 | { |
91 | struct com_puc_softc *psc = device_private(self); |
92 | struct com_softc *sc = &psc->sc_com; |
93 | struct puc_attach_args *aa = aux; |
94 | const char *intrstr; |
95 | char intrbuf[PCI_INTRSTR_LEN]; |
96 | unsigned int iface; |
97 | |
98 | sc->sc_dev = self; |
99 | |
100 | iface = PCI_INTERFACE(pci_conf_read(aa->pc, aa->tag, PCI_CLASS_REG)); |
101 | aprint_naive(": Serial port" ); |
102 | if (iface < __arraycount(serialtype)) |
103 | aprint_normal(" (%s-compatible)" , serialtype[iface]); |
104 | aprint_normal(": " ); |
105 | |
106 | COM_INIT_REGS(sc->sc_regs, aa->t, aa->h, aa->a); |
107 | sc->sc_frequency = aa->flags & PUC_COM_CLOCKMASK; |
108 | |
109 | intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf, sizeof(intrbuf)); |
110 | psc->sc_ih = pci_intr_establish(aa->pc, aa->intrhandle, IPL_SERIAL, |
111 | comintr, sc); |
112 | if (psc->sc_ih == NULL) { |
113 | aprint_error("couldn't establish interrupt" ); |
114 | if (intrstr != NULL) |
115 | aprint_error(" at %s" , intrstr); |
116 | aprint_error("\n" ); |
117 | return; |
118 | } |
119 | |
120 | #if defined(amd64) || defined(i386) |
121 | /* |
122 | * Since puc(4) serial ports are typically not identified in the |
123 | * BIOS COM[1234] table, the I/O address must be manually set using |
124 | * installboot(8) in order to enable a serial console. |
125 | * Print the address here so the user doesn't have to dig through |
126 | * PCI configuration space to find it. |
127 | */ |
128 | if (aa->h < 0x10000) |
129 | aprint_normal("ioaddr 0x%04lx, " , aa->h); |
130 | #endif |
131 | aprint_normal("interrupting at %s\n" , intrstr); |
132 | |
133 | /* Enable Cyberserial 8X clock. */ |
134 | if (aa->flags & (PUC_COM_SIIG10x|PUC_COM_SIIG20x)) { |
135 | int usrregno; |
136 | |
137 | if (aa->flags & PUC_PORT_USR3) usrregno = 3; |
138 | else if (aa->flags & PUC_PORT_USR2) usrregno = 2; |
139 | else if (aa->flags & PUC_PORT_USR1) usrregno = 1; |
140 | else /* (aa->flags & PUC_PORT_USR0) */ usrregno = 0; |
141 | |
142 | if (aa->flags & PUC_COM_SIIG10x) |
143 | write_siig10x_usrreg(aa->pc, aa->tag, usrregno, 1); |
144 | else |
145 | write_siig20x_usrreg(aa->pc, aa->tag, usrregno, 1); |
146 | } else { |
147 | if (!pmf_device_register(self, NULL, com_resume)) |
148 | aprint_error_dev(self, |
149 | "couldn't establish power handler\n" ); |
150 | } |
151 | |
152 | aprint_normal("%s" , device_xname(self)); |
153 | com_attach_subr(sc); |
154 | } |
155 | |
156 | CFATTACH_DECL_NEW(com_puc, sizeof(struct com_puc_softc), |
157 | com_puc_probe, com_puc_attach, NULL, NULL); |
158 | |