| 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 | |