1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include <sys/param.h> 31 #include <sys/conf.h> 32 #include <sys/malloc.h> 33 #include <sys/systm.h> 34 #include <sys/uio.h> 35 36 #include <sys/bus.h> 37 #include <machine/bus.h> 38 #include <sys/rman.h> 39 #include <machine/resource.h> 40 41 #include <sys/pciio.h> 42 #include <dev/pci/pcivar.h> 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pci_private.h> 45 46 #include <dev/cardbus/cardbusreg.h> 47 #include <dev/cardbus/cardbusvar.h> 48 #include <dev/cardbus/cardbus_cis.h> 49 #include <dev/pccard/pccard_cis.h> 50 51 static d_open_t cardbus_open; 52 static d_close_t cardbus_close; 53 static d_read_t cardbus_read; 54 static d_ioctl_t cardbus_ioctl; 55 56 static struct cdevsw cardbus_cdevsw = { 57 .d_version = D_VERSION, 58 .d_open = cardbus_open, 59 .d_close = cardbus_close, 60 .d_read = cardbus_read, 61 .d_ioctl = cardbus_ioctl, 62 .d_name = "cardbus" 63 }; 64 65 static int 66 cardbus_build_cis(device_t cbdev, device_t child, int id, 67 int len, uint8_t *tupledata, uint32_t start, uint32_t *off, 68 struct tuple_callbacks *info, void *argp) 69 { 70 struct cis_buffer *cis; 71 int i; 72 73 cis = (struct cis_buffer *)argp; 74 /* 75 * CISTPL_END is a special case, it has no length field. 76 */ 77 if (id == CISTPL_END) { 78 if (cis->len + 1 > sizeof(cis->buffer)) { 79 cis->len = 0; 80 return (ENOSPC); 81 } 82 cis->buffer[cis->len++] = id; 83 return (0); 84 } 85 if (cis->len + 2 + len > sizeof(cis->buffer)) { 86 cis->len = 0; 87 return (ENOSPC); 88 } 89 cis->buffer[cis->len++] = id; 90 cis->buffer[cis->len++] = len; 91 for (i = 0; i < len; i++) 92 cis->buffer[cis->len++] = tupledata[i]; 93 return (0); 94 } 95 96 static int 97 cardbus_device_buffer_cis(device_t parent, device_t child, 98 struct cis_buffer *cbp) 99 { 100 struct tuple_callbacks cb[] = { 101 {CISTPL_GENERIC, "GENERIC", cardbus_build_cis} 102 }; 103 104 return (cardbus_parse_cis(parent, child, cb, cbp)); 105 } 106 107 int 108 cardbus_device_create(struct cardbus_softc *sc, struct cardbus_devinfo *devi, 109 device_t parent, device_t child) 110 { 111 uint32_t minor; 112 int unit; 113 114 cardbus_device_buffer_cis(parent, child, &devi->sc_cis); 115 minor = (device_get_unit(sc->sc_dev) << 8) + devi->pci.cfg.func; 116 unit = device_get_unit(sc->sc_dev); 117 devi->sc_cisdev = make_dev(&cardbus_cdevsw, minor, 0, 0, 0666, 118 "cardbus%d.%d.cis", unit, devi->pci.cfg.func); 119 if (devi->pci.cfg.func == 0) 120 make_dev_alias(devi->sc_cisdev, "cardbus%d.cis", unit); 121 devi->sc_cisdev->si_drv1 = devi; 122 return (0); 123 } 124 125 int 126 cardbus_device_destroy(struct cardbus_devinfo *devi) 127 { 128 if (devi->sc_cisdev) 129 destroy_dev(devi->sc_cisdev); 130 return (0); 131 } 132 133 static int 134 cardbus_open(struct cdev *dev, int oflags, int devtype, struct thread *td) 135 { 136 137 return (0); 138 } 139 140 static int 141 cardbus_close(struct cdev *dev, int fflags, int devtype, struct thread *td) 142 { 143 144 return (0); 145 } 146 147 static int 148 cardbus_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, 149 struct thread *td) 150 { 151 return (ENOTTY); 152 } 153 154 static int 155 cardbus_read(struct cdev *dev, struct uio *uio, int ioflag) 156 { 157 struct cardbus_devinfo *devi; 158 159 devi = dev->si_drv1; 160 /* EOF */ 161 if (uio->uio_offset >= devi->sc_cis.len) 162 return (0); 163 return (uiomove(devi->sc_cis.buffer + uio->uio_offset, 164 MIN(uio->uio_resid, devi->sc_cis.len - uio->uio_offset), uio)); 165 } 166