mfi_pci.c revision 171980
1/*- 2 * Copyright (c) 2006 IronPort Systems 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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26/*- 27 * Copyright (c) 2007 LSI Corp. 28 * Copyright (c) 2007 Rajesh Prabhakaran. 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 */ 52 53#include <sys/cdefs.h> 54__FBSDID("$FreeBSD: head/sys/dev/mfi/mfi_pci.c 171980 2007-08-25 23:58:45Z scottl $"); 55 56/* PCI/PCI-X/PCIe bus interface for the LSI MegaSAS controllers */ 57 58#include "opt_mfi.h" 59 60#include <sys/param.h> 61#include <sys/systm.h> 62#include <sys/kernel.h> 63#include <sys/selinfo.h> 64#include <sys/module.h> 65#include <sys/bus.h> 66#include <sys/conf.h> 67#include <sys/bio.h> 68#include <sys/malloc.h> 69#include <sys/uio.h> 70 71#include <machine/bus.h> 72#include <machine/resource.h> 73#include <sys/rman.h> 74 75#include <dev/pci/pcireg.h> 76#include <dev/pci/pcivar.h> 77 78#include <dev/mfi/mfireg.h> 79#include <dev/mfi/mfi_ioctl.h> 80#include <dev/mfi/mfivar.h> 81 82static int mfi_pci_probe(device_t); 83static int mfi_pci_attach(device_t); 84static int mfi_pci_detach(device_t); 85static int mfi_pci_suspend(device_t); 86static int mfi_pci_resume(device_t); 87static void mfi_pci_free(struct mfi_softc *); 88 89static device_method_t mfi_methods[] = { 90 DEVMETHOD(device_probe, mfi_pci_probe), 91 DEVMETHOD(device_attach, mfi_pci_attach), 92 DEVMETHOD(device_detach, mfi_pci_detach), 93 DEVMETHOD(device_suspend, mfi_pci_suspend), 94 DEVMETHOD(device_resume, mfi_pci_resume), 95 DEVMETHOD(bus_print_child, bus_generic_print_child), 96 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 97 { 0, 0 } 98}; 99 100static driver_t mfi_pci_driver = { 101 "mfi", 102 mfi_methods, 103 sizeof(struct mfi_softc) 104}; 105 106static devclass_t mfi_devclass; 107DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0); 108 109struct mfi_ident { 110 uint16_t vendor; 111 uint16_t device; 112 uint16_t subvendor; 113 uint16_t subdevice; 114 int flags; 115 const char *desc; 116} mfi_identifiers[] = { 117 {0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */ 118 {0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */ 119 {0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"}, 120 {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"}, 121 {0, 0, 0, 0, 0, NULL} 122}; 123 124static struct mfi_ident * 125mfi_find_ident(device_t dev) 126{ 127 struct mfi_ident *m; 128 129 for (m = mfi_identifiers; m->vendor != 0; m++) { 130 if ((m->vendor == pci_get_vendor(dev)) && 131 (m->device == pci_get_device(dev)) && 132 ((m->subvendor == pci_get_subvendor(dev)) || 133 (m->subvendor == 0xffff)) && 134 ((m->subdevice == pci_get_subdevice(dev)) || 135 (m->subdevice == 0xffff))) 136 return (m); 137 } 138 139 return (NULL); 140} 141 142static int 143mfi_pci_probe(device_t dev) 144{ 145 struct mfi_ident *id; 146 147 if ((id = mfi_find_ident(dev)) != NULL) { 148 device_set_desc(dev, id->desc); 149 return (BUS_PROBE_DEFAULT); 150 } 151 return (ENXIO); 152} 153 154static int 155mfi_pci_attach(device_t dev) 156{ 157 struct mfi_softc *sc; 158 struct mfi_ident *m; 159 uint32_t command; 160 int error; 161 162 sc = device_get_softc(dev); 163 bzero(sc, sizeof(*sc)); 164 sc->mfi_dev = dev; 165 166 /* Verify that the adapter can be set up in PCI space */ 167 command = pci_read_config(dev, PCIR_COMMAND, 2); 168 command |= PCIM_CMD_BUSMASTEREN; 169 pci_write_config(dev, PCIR_COMMAND, command, 2); 170 command = pci_read_config(dev, PCIR_COMMAND, 2); 171 if ((command & PCIM_CMD_BUSMASTEREN) == 0) { 172 device_printf(dev, "Can't enable PCI busmaster\n"); 173 return (ENXIO); 174 } 175 if ((command & PCIM_CMD_MEMEN) == 0) { 176 device_printf(dev, "PCI memory window not available\n"); 177 return (ENXIO); 178 } 179 180 /* Allocate PCI registers */ 181 sc->mfi_regs_rid = PCIR_BAR(0); 182 if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev, 183 SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) { 184 device_printf(dev, "Cannot allocate PCI registers\n"); 185 return (ENXIO); 186 } 187 sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource); 188 sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource); 189 190 error = ENOMEM; 191 192 /* Allocate parent DMA tag */ 193 if (bus_dma_tag_create( NULL, /* parent */ 194 1, 0, /* algnmnt, boundary */ 195 BUS_SPACE_MAXADDR, /* lowaddr */ 196 BUS_SPACE_MAXADDR, /* highaddr */ 197 NULL, NULL, /* filter, filterarg */ 198 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */ 199 BUS_SPACE_UNRESTRICTED, /* nsegments */ 200 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 201 0, /* flags */ 202 NULL, NULL, /* lockfunc, lockarg */ 203 &sc->mfi_parent_dmat)) { 204 device_printf(dev, "Cannot allocate parent DMA tag\n"); 205 goto out; 206 } 207 208 m = mfi_find_ident(dev); 209 sc->mfi_flags = m->flags; 210 211 error = mfi_attach(sc); 212out: 213 if (error) { 214 mfi_free(sc); 215 mfi_pci_free(sc); 216 } 217 218 return (error); 219} 220 221static int 222mfi_pci_detach(device_t dev) 223{ 224 struct mfi_softc *sc; 225 struct mfi_disk *ld; 226 int error; 227 228 sc = device_get_softc(dev); 229 230 sx_xlock(&sc->mfi_config_lock); 231 mtx_lock(&sc->mfi_io_lock); 232 if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) { 233 mtx_unlock(&sc->mfi_io_lock); 234 sx_xunlock(&sc->mfi_config_lock); 235 return (EBUSY); 236 } 237 sc->mfi_detaching = 1; 238 mtx_unlock(&sc->mfi_io_lock); 239 240 while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) { 241 if ((error = device_delete_child(dev, ld->ld_dev)) != 0) { 242 sc->mfi_detaching = 0; 243 sx_xunlock(&sc->mfi_config_lock); 244 return (error); 245 } 246 } 247 sx_xunlock(&sc->mfi_config_lock); 248 249 EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh); 250 251 mfi_shutdown(sc); 252 mfi_free(sc); 253 mfi_pci_free(sc); 254 return (0); 255} 256 257static void 258mfi_pci_free(struct mfi_softc *sc) 259{ 260 261 if (sc->mfi_regs_resource != NULL) { 262 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY, 263 sc->mfi_regs_rid, sc->mfi_regs_resource); 264 } 265 266 return; 267} 268 269static int 270mfi_pci_suspend(device_t dev) 271{ 272 273 return (EINVAL); 274} 275 276static int 277mfi_pci_resume(device_t dev) 278{ 279 280 return (EINVAL); 281} 282