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