1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2008 M. Warner Losh <imp@FreeBSD.org> 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 unmodified, this list of conditions, and the following 11 * disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/conf.h> 34 #include <sys/malloc.h> 35 #include <sys/systm.h> 36 #include <sys/uio.h> 37 38 #include <sys/bus.h> 39 #include <machine/bus.h> 40 #include <sys/rman.h> 41 #include <machine/resource.h> 42 43 #include <sys/pciio.h> 44 #include <dev/pci/pcivar.h> 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pci_private.h> 47 48 #include <dev/cardbus/cardbusreg.h> 49 #include <dev/cardbus/cardbusvar.h> 50 #include <dev/cardbus/cardbus_cis.h> 51 #include <dev/pccard/pccard_cis.h> 52 53 static d_open_t cardbus_open; 54 static d_close_t cardbus_close; 55 static d_read_t cardbus_read; 56 static d_ioctl_t cardbus_ioctl; 57 58 static struct cdevsw cardbus_cdevsw = { 59 .d_version = D_VERSION, 60 .d_open = cardbus_open, 61 .d_close = cardbus_close, 62 .d_read = cardbus_read, 63 .d_ioctl = cardbus_ioctl, 64 .d_name = "cardbus" 65 }; 66 67 static int 68 cardbus_build_cis(device_t cbdev, device_t child, int id, 69 int len, uint8_t *tupledata, uint32_t start, uint32_t *off, 70 struct tuple_callbacks *info, void *argp) 71 { 72 struct cis_buffer *cis; 73 int i; 74 75 cis = (struct cis_buffer *)argp; 76 /* 77 * CISTPL_END is a special case, it has no length field. 78 */ 79 if (id == CISTPL_END) { 80 if (cis->len + 1 > sizeof(cis->buffer)) { 81 cis->len = 0; 82 return (ENOSPC); 83 } 84 cis->buffer[cis->len++] = id; 85 return (0); 86 } 87 if (cis->len + 2 + len > sizeof(cis->buffer)) { 88 cis->len = 0; 89 return (ENOSPC); 90 } 91 cis->buffer[cis->len++] = id; 92 cis->buffer[cis->len++] = len; 93 for (i = 0; i < len; i++) 94 cis->buffer[cis->len++] = tupledata[i]; 95 return (0); 96 } 97 98 static int 99 cardbus_device_buffer_cis(device_t parent, device_t child, 100 struct cis_buffer *cbp) 101 { 102 struct tuple_callbacks cb[] = { 103 {CISTPL_GENERIC, "GENERIC", cardbus_build_cis} 104 }; 105 106 return (cardbus_parse_cis(parent, child, cb, cbp)); 107 } 108 109 int 110 cardbus_device_create(struct cardbus_softc *sc, struct cardbus_devinfo *devi, 111 device_t parent, device_t child) 112 { 113 uint32_t minor; 114 int unit; 115 116 cardbus_device_buffer_cis(parent, child, &devi->sc_cis); 117 minor = (device_get_unit(sc->sc_dev) << 8) + devi->pci.cfg.func; 118 unit = device_get_unit(sc->sc_dev); 119 devi->sc_cisdev = make_dev(&cardbus_cdevsw, minor, 0, 0, 0666, 120 "cardbus%d.%d.cis", unit, devi->pci.cfg.func); 121 if (devi->pci.cfg.func == 0) 122 make_dev_alias(devi->sc_cisdev, "cardbus%d.cis", unit); 123 devi->sc_cisdev->si_drv1 = devi; 124 return (0); 125 } 126 127 int 128 cardbus_device_destroy(struct cardbus_devinfo *devi) 129 { 130 if (devi->sc_cisdev) 131 destroy_dev(devi->sc_cisdev); 132 return (0); 133 } 134 135 static int 136 cardbus_open(struct cdev *dev, int oflags, int devtype, struct thread *td) 137 { 138 139 return (0); 140 } 141 142 static int 143 cardbus_close(struct cdev *dev, int fflags, int devtype, struct thread *td) 144 { 145 146 return (0); 147 } 148 149 static int 150 cardbus_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, 151 struct thread *td) 152 { 153 return (ENOTTY); 154 } 155 156 static int 157 cardbus_read(struct cdev *dev, struct uio *uio, int ioflag) 158 { 159 struct cardbus_devinfo *devi; 160 161 devi = dev->si_drv1; 162 /* EOF */ 163 if (uio->uio_offset >= devi->sc_cis.len) 164 return (0); 165 return (uiomove(devi->sc_cis.buffer + uio->uio_offset, 166 MIN(uio->uio_resid, devi->sc_cis.len - uio->uio_offset), uio)); 167 } 168