pci_usrreq.c revision 1.2.2.6
1 1.2.2.6 nathanw /* $NetBSD: pci_usrreq.c,v 1.2.2.6 2002/11/11 22:11:27 nathanw Exp $ */ 2 1.2.2.2 nathanw 3 1.2.2.2 nathanw /* 4 1.2.2.2 nathanw * Copyright 2001 Wasabi Systems, Inc. 5 1.2.2.2 nathanw * All rights reserved. 6 1.2.2.2 nathanw * 7 1.2.2.2 nathanw * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 1.2.2.2 nathanw * 9 1.2.2.2 nathanw * Redistribution and use in source and binary forms, with or without 10 1.2.2.2 nathanw * modification, are permitted provided that the following conditions 11 1.2.2.2 nathanw * are met: 12 1.2.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 16 1.2.2.2 nathanw * documentation and/or other materials provided with the distribution. 17 1.2.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 18 1.2.2.2 nathanw * must display the following acknowledgement: 19 1.2.2.2 nathanw * This product includes software developed for the NetBSD Project by 20 1.2.2.2 nathanw * Wasabi Systems, Inc. 21 1.2.2.2 nathanw * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.2.2.2 nathanw * or promote products derived from this software without specific prior 23 1.2.2.2 nathanw * written permission. 24 1.2.2.2 nathanw * 25 1.2.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.2.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.2.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.2.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.2.2.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.2.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.2.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.2.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.2.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.2.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.2.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 36 1.2.2.2 nathanw */ 37 1.2.2.2 nathanw 38 1.2.2.2 nathanw /* 39 1.2.2.2 nathanw * User -> kernel interface for PCI bus access. 40 1.2.2.2 nathanw */ 41 1.2.2.2 nathanw 42 1.2.2.3 nathanw #include <sys/cdefs.h> 43 1.2.2.6 nathanw __KERNEL_RCSID(0, "$NetBSD: pci_usrreq.c,v 1.2.2.6 2002/11/11 22:11:27 nathanw Exp $"); 44 1.2.2.3 nathanw 45 1.2.2.2 nathanw #include <sys/param.h> 46 1.2.2.2 nathanw #include <sys/conf.h> 47 1.2.2.2 nathanw #include <sys/device.h> 48 1.2.2.2 nathanw #include <sys/ioctl.h> 49 1.2.2.2 nathanw #include <sys/proc.h> 50 1.2.2.2 nathanw #include <sys/systm.h> 51 1.2.2.2 nathanw #include <sys/errno.h> 52 1.2.2.2 nathanw #include <sys/fcntl.h> 53 1.2.2.2 nathanw 54 1.2.2.2 nathanw #include <dev/pci/pcireg.h> 55 1.2.2.2 nathanw #include <dev/pci/pcivar.h> 56 1.2.2.2 nathanw #include <dev/pci/pciio.h> 57 1.2.2.2 nathanw 58 1.2.2.5 nathanw dev_type_open(pciopen); 59 1.2.2.5 nathanw dev_type_ioctl(pciioctl); 60 1.2.2.5 nathanw dev_type_mmap(pcimmap); 61 1.2.2.5 nathanw 62 1.2.2.5 nathanw const struct cdevsw pci_cdevsw = { 63 1.2.2.5 nathanw pciopen, nullclose, noread, nowrite, pciioctl, 64 1.2.2.6 nathanw nostop, notty, nopoll, pcimmap, nokqfilter, 65 1.2.2.5 nathanw }; 66 1.2.2.2 nathanw 67 1.2.2.2 nathanw int 68 1.2.2.2 nathanw pciopen(dev_t dev, int flags, int mode, struct proc *p) 69 1.2.2.2 nathanw { 70 1.2.2.2 nathanw struct pci_softc *sc; 71 1.2.2.2 nathanw int unit; 72 1.2.2.2 nathanw 73 1.2.2.2 nathanw unit = minor(dev); 74 1.2.2.2 nathanw sc = device_lookup(&pci_cd, unit); 75 1.2.2.2 nathanw if (sc == NULL) 76 1.2.2.2 nathanw return (ENXIO); 77 1.2.2.2 nathanw 78 1.2.2.2 nathanw return (0); 79 1.2.2.2 nathanw } 80 1.2.2.2 nathanw 81 1.2.2.2 nathanw int 82 1.2.2.2 nathanw pciioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 83 1.2.2.2 nathanw { 84 1.2.2.2 nathanw struct pci_softc *sc = device_lookup(&pci_cd, minor(dev)); 85 1.2.2.2 nathanw struct pciio_bdf_cfgreg *bdfr = (void *) data; 86 1.2.2.2 nathanw struct pciio_businfo *binfo = (void *) data; 87 1.2.2.2 nathanw pcitag_t tag; 88 1.2.2.2 nathanw 89 1.2.2.2 nathanw switch (cmd) { 90 1.2.2.2 nathanw case PCI_IOC_BDF_CFGREAD: 91 1.2.2.2 nathanw case PCI_IOC_BDF_CFGWRITE: 92 1.2.2.2 nathanw if (bdfr->bus > 255 || bdfr->device >= sc->sc_maxndevs || 93 1.2.2.2 nathanw bdfr->function > 7) 94 1.2.2.2 nathanw return (EINVAL); 95 1.2.2.2 nathanw tag = pci_make_tag(sc->sc_pc, bdfr->bus, bdfr->device, 96 1.2.2.2 nathanw bdfr->function); 97 1.2.2.2 nathanw if (cmd == PCI_IOC_BDF_CFGREAD) 98 1.2.2.2 nathanw bdfr->cfgreg.val = pci_conf_read(sc->sc_pc, tag, 99 1.2.2.2 nathanw bdfr->cfgreg.reg); 100 1.2.2.2 nathanw else { 101 1.2.2.2 nathanw if ((flag & FWRITE) == 0) 102 1.2.2.2 nathanw return (EBADF); 103 1.2.2.2 nathanw pci_conf_write(sc->sc_pc, tag, bdfr->cfgreg.reg, 104 1.2.2.2 nathanw bdfr->cfgreg.val); 105 1.2.2.2 nathanw } 106 1.2.2.2 nathanw break; 107 1.2.2.2 nathanw 108 1.2.2.2 nathanw case PCI_IOC_BUSINFO: 109 1.2.2.2 nathanw binfo->busno = sc->sc_bus; 110 1.2.2.2 nathanw binfo->maxdevs = sc->sc_maxndevs; 111 1.2.2.2 nathanw break; 112 1.2.2.2 nathanw 113 1.2.2.2 nathanw default: 114 1.2.2.2 nathanw return (ENOTTY); 115 1.2.2.2 nathanw } 116 1.2.2.2 nathanw 117 1.2.2.2 nathanw return (0); 118 1.2.2.2 nathanw } 119 1.2.2.2 nathanw 120 1.2.2.2 nathanw paddr_t 121 1.2.2.2 nathanw pcimmap(dev_t dev, off_t offset, int prot) 122 1.2.2.2 nathanw { 123 1.2.2.2 nathanw #if 0 124 1.2.2.2 nathanw struct pci_softc *sc = device_lookup(&pci_cd, minor(dev)); 125 1.2.2.2 nathanw 126 1.2.2.2 nathanw /* 127 1.2.2.2 nathanw * Since we allow mapping of the entire bus, we 128 1.2.2.2 nathanw * take the offset to be the address on the bus, 129 1.2.2.2 nathanw * and pass 0 as the offset into that range. 130 1.2.2.2 nathanw * 131 1.2.2.2 nathanw * XXX Need a way to deal with linear/prefetchable/etc. 132 1.2.2.2 nathanw */ 133 1.2.2.2 nathanw return (bus_space_mmap(sc->sc_memt, offset, 0, prot, 0)); 134 1.2.2.2 nathanw #else 135 1.2.2.2 nathanw /* XXX Consider this further. */ 136 1.2.2.2 nathanw return (-1); 137 1.2.2.2 nathanw #endif 138 1.2.2.2 nathanw } 139 1.2.2.2 nathanw 140 1.2.2.2 nathanw /* 141 1.2.2.2 nathanw * pci_devioctl: 142 1.2.2.2 nathanw * 143 1.2.2.2 nathanw * PCI ioctls that can be performed on devices directly. 144 1.2.2.2 nathanw */ 145 1.2.2.2 nathanw int 146 1.2.2.2 nathanw pci_devioctl(pci_chipset_tag_t pc, pcitag_t tag, u_long cmd, caddr_t data, 147 1.2.2.2 nathanw int flag, struct proc *p) 148 1.2.2.2 nathanw { 149 1.2.2.2 nathanw struct pciio_cfgreg *r = (void *) data; 150 1.2.2.2 nathanw 151 1.2.2.2 nathanw switch (cmd) { 152 1.2.2.2 nathanw case PCI_IOC_CFGREAD: 153 1.2.2.2 nathanw case PCI_IOC_CFGWRITE: 154 1.2.2.2 nathanw if (cmd == PCI_IOC_CFGREAD) 155 1.2.2.2 nathanw r->val = pci_conf_read(pc, tag, r->reg); 156 1.2.2.2 nathanw else { 157 1.2.2.2 nathanw if ((flag & FWRITE) == 0) 158 1.2.2.2 nathanw return (EBADF); 159 1.2.2.2 nathanw pci_conf_write(pc, tag, r->reg, r->val); 160 1.2.2.2 nathanw } 161 1.2.2.2 nathanw break; 162 1.2.2.2 nathanw 163 1.2.2.2 nathanw default: 164 1.2.2.4 nathanw return (EPASSTHROUGH); 165 1.2.2.2 nathanw } 166 1.2.2.2 nathanw 167 1.2.2.2 nathanw return (0); 168 1.2.2.2 nathanw } 169
Indexes created Tue Sep 30 20:09:53 GMT 2025