pci_usrreq.c revision 1.2.4.2
1 1.2.4.2 fvdl /* $NetBSD: pci_usrreq.c,v 1.2.4.2 2001/10/01 12:45:58 fvdl Exp $ */ 2 1.2.4.2 fvdl 3 1.2.4.2 fvdl /* 4 1.2.4.2 fvdl * Copyright 2001 Wasabi Systems, Inc. 5 1.2.4.2 fvdl * All rights reserved. 6 1.2.4.2 fvdl * 7 1.2.4.2 fvdl * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 1.2.4.2 fvdl * 9 1.2.4.2 fvdl * Redistribution and use in source and binary forms, with or without 10 1.2.4.2 fvdl * modification, are permitted provided that the following conditions 11 1.2.4.2 fvdl * are met: 12 1.2.4.2 fvdl * 1. Redistributions of source code must retain the above copyright 13 1.2.4.2 fvdl * notice, this list of conditions and the following disclaimer. 14 1.2.4.2 fvdl * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.4.2 fvdl * notice, this list of conditions and the following disclaimer in the 16 1.2.4.2 fvdl * documentation and/or other materials provided with the distribution. 17 1.2.4.2 fvdl * 3. All advertising materials mentioning features or use of this software 18 1.2.4.2 fvdl * must display the following acknowledgement: 19 1.2.4.2 fvdl * This product includes software developed for the NetBSD Project by 20 1.2.4.2 fvdl * Wasabi Systems, Inc. 21 1.2.4.2 fvdl * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.2.4.2 fvdl * or promote products derived from this software without specific prior 23 1.2.4.2 fvdl * written permission. 24 1.2.4.2 fvdl * 25 1.2.4.2 fvdl * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.2.4.2 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.4.2 fvdl * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.4.2 fvdl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.2.4.2 fvdl * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.4.2 fvdl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.4.2 fvdl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.4.2 fvdl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.4.2 fvdl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.4.2 fvdl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.4.2 fvdl * POSSIBILITY OF SUCH DAMAGE. 36 1.2.4.2 fvdl */ 37 1.2.4.2 fvdl 38 1.2.4.2 fvdl /* 39 1.2.4.2 fvdl * User -> kernel interface for PCI bus access. 40 1.2.4.2 fvdl */ 41 1.2.4.2 fvdl 42 1.2.4.2 fvdl #include <sys/param.h> 43 1.2.4.2 fvdl #include <sys/conf.h> 44 1.2.4.2 fvdl #include <sys/device.h> 45 1.2.4.2 fvdl #include <sys/ioctl.h> 46 1.2.4.2 fvdl #include <sys/proc.h> 47 1.2.4.2 fvdl #include <sys/systm.h> 48 1.2.4.2 fvdl #include <sys/errno.h> 49 1.2.4.2 fvdl #include <sys/fcntl.h> 50 1.2.4.2 fvdl #include <sys/vnode.h> 51 1.2.4.2 fvdl 52 1.2.4.2 fvdl #include <dev/pci/pcireg.h> 53 1.2.4.2 fvdl #include <dev/pci/pcivar.h> 54 1.2.4.2 fvdl #include <dev/pci/pciio.h> 55 1.2.4.2 fvdl 56 1.2.4.2 fvdl cdev_decl(pci); 57 1.2.4.2 fvdl 58 1.2.4.2 fvdl int 59 1.2.4.2 fvdl pciopen(struct vnode *devvp, int flags, int mode, struct proc *p) 60 1.2.4.2 fvdl { 61 1.2.4.2 fvdl struct pci_softc *sc; 62 1.2.4.2 fvdl int unit; 63 1.2.4.2 fvdl 64 1.2.4.2 fvdl unit = minor(vdev_rdev(devvp)); 65 1.2.4.2 fvdl sc = device_lookup(&pci_cd, unit); 66 1.2.4.2 fvdl if (sc == NULL) 67 1.2.4.2 fvdl return (ENXIO); 68 1.2.4.2 fvdl vdev_setprivdata(devvp, sc); 69 1.2.4.2 fvdl 70 1.2.4.2 fvdl return (0); 71 1.2.4.2 fvdl } 72 1.2.4.2 fvdl 73 1.2.4.2 fvdl int 74 1.2.4.2 fvdl pciclose(struct vnode *devvp, int flags, int mode, struct proc *p) 75 1.2.4.2 fvdl { 76 1.2.4.2 fvdl 77 1.2.4.2 fvdl return (0); 78 1.2.4.2 fvdl } 79 1.2.4.2 fvdl 80 1.2.4.2 fvdl int 81 1.2.4.2 fvdl pciioctl(struct vnode *devvp, u_long cmd, caddr_t data, int flag, 82 1.2.4.2 fvdl struct proc *p) 83 1.2.4.2 fvdl { 84 1.2.4.2 fvdl struct pci_softc *sc = vdev_privdata(devvp); 85 1.2.4.2 fvdl struct pciio_bdf_cfgreg *bdfr = (void *) data; 86 1.2.4.2 fvdl struct pciio_businfo *binfo = (void *) data; 87 1.2.4.2 fvdl pcitag_t tag; 88 1.2.4.2 fvdl 89 1.2.4.2 fvdl switch (cmd) { 90 1.2.4.2 fvdl case PCI_IOC_BDF_CFGREAD: 91 1.2.4.2 fvdl case PCI_IOC_BDF_CFGWRITE: 92 1.2.4.2 fvdl if (bdfr->bus > 255 || bdfr->device >= sc->sc_maxndevs || 93 1.2.4.2 fvdl bdfr->function > 7) 94 1.2.4.2 fvdl return (EINVAL); 95 1.2.4.2 fvdl tag = pci_make_tag(sc->sc_pc, bdfr->bus, bdfr->device, 96 1.2.4.2 fvdl bdfr->function); 97 1.2.4.2 fvdl if (cmd == PCI_IOC_BDF_CFGREAD) 98 1.2.4.2 fvdl bdfr->cfgreg.val = pci_conf_read(sc->sc_pc, tag, 99 1.2.4.2 fvdl bdfr->cfgreg.reg); 100 1.2.4.2 fvdl else { 101 1.2.4.2 fvdl if ((flag & FWRITE) == 0) 102 1.2.4.2 fvdl return (EBADF); 103 1.2.4.2 fvdl pci_conf_write(sc->sc_pc, tag, bdfr->cfgreg.reg, 104 1.2.4.2 fvdl bdfr->cfgreg.val); 105 1.2.4.2 fvdl } 106 1.2.4.2 fvdl break; 107 1.2.4.2 fvdl 108 1.2.4.2 fvdl case PCI_IOC_BUSINFO: 109 1.2.4.2 fvdl binfo->busno = sc->sc_bus; 110 1.2.4.2 fvdl binfo->maxdevs = sc->sc_maxndevs; 111 1.2.4.2 fvdl break; 112 1.2.4.2 fvdl 113 1.2.4.2 fvdl default: 114 1.2.4.2 fvdl return (ENOTTY); 115 1.2.4.2 fvdl } 116 1.2.4.2 fvdl 117 1.2.4.2 fvdl return (0); 118 1.2.4.2 fvdl } 119 1.2.4.2 fvdl 120 1.2.4.2 fvdl paddr_t 121 1.2.4.2 fvdl pcimmap(struct vnode *devvp, off_t offset, int prot) 122 1.2.4.2 fvdl { 123 1.2.4.2 fvdl #if 0 124 1.2.4.2 fvdl struct pci_softc *sc = vdev_privdata(devvp); 125 1.2.4.2 fvdl 126 1.2.4.2 fvdl /* 127 1.2.4.2 fvdl * Since we allow mapping of the entire bus, we 128 1.2.4.2 fvdl * take the offset to be the address on the bus, 129 1.2.4.2 fvdl * and pass 0 as the offset into that range. 130 1.2.4.2 fvdl * 131 1.2.4.2 fvdl * XXX Need a way to deal with linear/prefetchable/etc. 132 1.2.4.2 fvdl */ 133 1.2.4.2 fvdl return (bus_space_mmap(sc->sc_memt, offset, 0, prot, 0)); 134 1.2.4.2 fvdl #else 135 1.2.4.2 fvdl /* XXX Consider this further. */ 136 1.2.4.2 fvdl return (-1); 137 1.2.4.2 fvdl #endif 138 1.2.4.2 fvdl } 139 1.2.4.2 fvdl 140 1.2.4.2 fvdl /* 141 1.2.4.2 fvdl * pci_devioctl: 142 1.2.4.2 fvdl * 143 1.2.4.2 fvdl * PCI ioctls that can be performed on devices directly. 144 1.2.4.2 fvdl */ 145 1.2.4.2 fvdl int 146 1.2.4.2 fvdl pci_devioctl(pci_chipset_tag_t pc, pcitag_t tag, u_long cmd, caddr_t data, 147 1.2.4.2 fvdl int flag, struct proc *p) 148 1.2.4.2 fvdl { 149 1.2.4.2 fvdl struct pciio_cfgreg *r = (void *) data; 150 1.2.4.2 fvdl 151 1.2.4.2 fvdl switch (cmd) { 152 1.2.4.2 fvdl case PCI_IOC_CFGREAD: 153 1.2.4.2 fvdl case PCI_IOC_CFGWRITE: 154 1.2.4.2 fvdl if (cmd == PCI_IOC_CFGREAD) 155 1.2.4.2 fvdl r->val = pci_conf_read(pc, tag, r->reg); 156 1.2.4.2 fvdl else { 157 1.2.4.2 fvdl if ((flag & FWRITE) == 0) 158 1.2.4.2 fvdl return (EBADF); 159 1.2.4.2 fvdl pci_conf_write(pc, tag, r->reg, r->val); 160 1.2.4.2 fvdl } 161 1.2.4.2 fvdl break; 162 1.2.4.2 fvdl 163 1.2.4.2 fvdl default: 164 1.2.4.2 fvdl return (ENOTTY); 165 1.2.4.2 fvdl } 166 1.2.4.2 fvdl 167 1.2.4.2 fvdl return (0); 168 1.2.4.2 fvdl } 169
Indexes created Tue Sep 30 20:09:53 GMT 2025