| 1 | /* $NetBSD: lpt_puc.c,v 1.17 2014/03/29 19:28:25 christos 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 parallel port ('lpt') driver attachment to "PCI |
| 35 | * 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: lpt_puc.c,v 1.17 2014/03/29 19:28:25 christos Exp $" ); |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | #include <sys/device.h> |
| 46 | |
| 47 | #include <sys/bus.h> |
| 48 | |
| 49 | #include <dev/pci/pcivar.h> |
| 50 | #include <dev/pci/pucvar.h> |
| 51 | #include <dev/ic/lptvar.h> |
| 52 | |
| 53 | static int |
| 54 | lpt_puc_probe(device_t parent, cfdata_t match, void *aux) |
| 55 | { |
| 56 | struct puc_attach_args *aa = aux; |
| 57 | |
| 58 | /* |
| 59 | * Locators already matched, just check the type. |
| 60 | */ |
| 61 | if (aa->type != PUC_PORT_TYPE_LPT) |
| 62 | return (0); |
| 63 | |
| 64 | return (1); |
| 65 | } |
| 66 | |
| 67 | static void |
| 68 | lpt_puc_attach(device_t parent, device_t self, void *aux) |
| 69 | { |
| 70 | struct lpt_softc *sc = device_private(self); |
| 71 | struct puc_attach_args *aa = aux; |
| 72 | const char *intrstr; |
| 73 | char intrbuf[PCI_INTRSTR_LEN]; |
| 74 | |
| 75 | sc->sc_dev = self; |
| 76 | sc->sc_iot = aa->t; |
| 77 | sc->sc_ioh = aa->h; |
| 78 | |
| 79 | aprint_naive(": Parallel port" ); |
| 80 | aprint_normal(": " ); |
| 81 | |
| 82 | intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf, sizeof(intrbuf)); |
| 83 | sc->sc_ih = pci_intr_establish(aa->pc, aa->intrhandle, IPL_TTY, |
| 84 | lptintr, sc); |
| 85 | if (sc->sc_ih == NULL) { |
| 86 | aprint_error("couldn't establish interrupt" ); |
| 87 | if (intrstr != NULL) |
| 88 | aprint_error(" at %s" , intrstr); |
| 89 | aprint_error("\n" ); |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | #if defined(amd64) || defined(i386) |
| 94 | /* |
| 95 | * Parallel ports are sometimes used for improvised GPIO by |
| 96 | * userspace programs which need to know the port's I/O address. |
| 97 | * Print the address here so the user doesn't have to dig through |
| 98 | * PCI configuration space to find it. |
| 99 | */ |
| 100 | if (aa->h < 0x10000) |
| 101 | aprint_normal("ioaddr 0x%04lx, " , aa->h); |
| 102 | #endif |
| 103 | aprint_normal("interrupting at %s\n" , intrstr); |
| 104 | |
| 105 | if (!pmf_device_register(self, NULL, NULL)) |
| 106 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 107 | |
| 108 | lpt_attach_subr(sc); |
| 109 | } |
| 110 | |
| 111 | CFATTACH_DECL_NEW(lpt_puc, sizeof(struct lpt_softc), |
| 112 | lpt_puc_probe, lpt_puc_attach, NULL, NULL); |
| 113 | |