1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2008, M. Warner Losh 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/conf.h> 35 #include <sys/malloc.h> 36 #include <sys/systm.h> 37 #include <sys/uio.h> 38 39 #include <sys/bus.h> 40 #include <machine/bus.h> 41 #include <sys/rman.h> 42 #include <machine/resource.h> 43 44 #include <sys/pciio.h> 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pci_private.h> 48 49 #include <dev/cardbus/cardbusreg.h> 50 #include <dev/cardbus/cardbusvar.h> 51 #include <dev/cardbus/cardbus_cis.h> 52 #include <dev/pccard/pccard_cis.h> 53 54 static d_open_t cardbus_open; 55 static d_close_t cardbus_close; 56 static d_read_t cardbus_read; 57 static d_ioctl_t cardbus_ioctl; 58 59 static struct cdevsw cardbus_cdevsw = { 60 .d_version = D_VERSION, 61 .d_open = cardbus_open, 62 .d_close = cardbus_close, 63 .d_read = cardbus_read, 64 .d_ioctl = cardbus_ioctl, 65 .d_name = "cardbus" 66 }; 67 68 static int 69 cardbus_build_cis(device_t cbdev, device_t child, int id, 70 int len, uint8_t *tupledata, uint32_t start, uint32_t *off, 71 struct tuple_callbacks *info, void *argp) 72 { 73 struct cis_buffer *cis; 74 int i; 75 76 cis = (struct cis_buffer *)argp; 77 /* 78 * CISTPL_END is a special case, it has no length field. 79 */ 80 if (id == CISTPL_END) { 81 if (cis->len + 1 > sizeof(cis->buffer)) { 82 cis->len = 0; 83 return (ENOSPC); 84 } 85 cis->buffer[cis->len++] = id; 86 return (0); 87 } 88 if (cis->len + 2 + len > sizeof(cis->buffer)) { 89 cis->len = 0; 90 return (ENOSPC); 91 } 92 cis->buffer[cis->len++] = id; 93 cis->buffer[cis->len++] = len; 94 for (i = 0; i < len; i++) 95 cis->buffer[cis->len++] = tupledata[i]; 96 return (0); 97 } 98 99 static int 100 cardbus_device_buffer_cis(device_t parent, device_t child, 101 struct cis_buffer *cbp) 102 { 103 struct tuple_callbacks cb[] = { 104 {CISTPL_GENERIC, "GENERIC", cardbus_build_cis} 105 }; 106 107 return (cardbus_parse_cis(parent, child, cb, cbp)); 108 } 109 110 int 111 cardbus_device_create(struct cardbus_softc *sc, struct cardbus_devinfo *devi, 112 device_t parent, device_t child) 113 { 114 uint32_t minor; 115 int unit; 116 117 cardbus_device_buffer_cis(parent, child, &devi->sc_cis); 118 minor = (device_get_unit(sc->sc_dev) << 8) + devi->pci.cfg.func; 119 unit = device_get_unit(sc->sc_dev); 120 devi->sc_cisdev = make_dev(&cardbus_cdevsw, minor, 0, 0, 0666, 121 "cardbus%d.%d.cis", unit, devi->pci.cfg.func); 122 if (devi->pci.cfg.func == 0) 123 make_dev_alias(devi->sc_cisdev, "cardbus%d.cis", unit); 124 devi->sc_cisdev->si_drv1 = devi; 125 return (0); 126 } 127 128 int 129 cardbus_device_destroy(struct cardbus_devinfo *devi) 130 { 131 if (devi->sc_cisdev) 132 destroy_dev(devi->sc_cisdev); 133 return (0); 134 } 135 136 static int 137 cardbus_open(struct cdev *dev, int oflags, int devtype, struct thread *td) 138 { 139 140 return (0); 141 } 142 143 static int 144 cardbus_close(struct cdev *dev, int fflags, int devtype, struct thread *td) 145 { 146 147 return (0); 148 } 149 150 static int 151 cardbus_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, 152 struct thread *td) 153 { 154 return (ENOTTY); 155 } 156 157 static int 158 cardbus_read(struct cdev *dev, struct uio *uio, int ioflag) 159 { 160 struct cardbus_devinfo *devi; 161 162 devi = dev->si_drv1; 163 /* EOF */ 164 if (uio->uio_offset >= devi->sc_cis.len) 165 return (0); 166 return (uiomove(devi->sc_cis.buffer + uio->uio_offset, 167 MIN(uio->uio_resid, devi->sc_cis.len - uio->uio_offset), uio)); 168 } 169