mfi_pci.c revision 204590
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 204590 2010-03-02 17:34:11Z kib $"); 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); 108MODULE_VERSION(mfi, 1); 109 110struct mfi_ident { 111 uint16_t vendor; 112 uint16_t device; 113 uint16_t subvendor; 114 uint16_t subdevice; 115 int flags; 116 const char *desc; 117} mfi_identifiers[] = { 118 {0x1000, 0x0060, 0x1028, 0xffff, MFI_FLAGS_1078, "Dell PERC 6"}, 119 {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"}, 120 {0x1000, 0x0078, 0xffff, 0xffff, MFI_FLAGS_GEN2, "LSI MegaSAS Gen2"}, 121 {0x1000, 0x0079, 0x1028, 0x1f15, MFI_FLAGS_GEN2, "Dell PERC H800 Adapter"}, 122 {0x1000, 0x0079, 0x1028, 0x1f16, MFI_FLAGS_GEN2, "Dell PERC H700 Adapter"}, 123 {0x1000, 0x0079, 0x1028, 0x1f17, MFI_FLAGS_GEN2, "Dell PERC H700 Integrated"}, 124 {0x1000, 0x0079, 0x1028, 0x1f18, MFI_FLAGS_GEN2, "Dell PERC H700 Modular"}, 125 {0x1000, 0x0079, 0x1028, 0x1f19, MFI_FLAGS_GEN2, "Dell PERC H700"}, 126 {0x1000, 0x0079, 0x1028, 0x1f1b, MFI_FLAGS_GEN2, "Dell PERC H800"}, 127 {0x1000, 0x0079, 0x1028, 0xffff, MFI_FLAGS_GEN2, "Dell PERC Gen2"}, 128 {0x1000, 0x0079, 0xffff, 0xffff, MFI_FLAGS_GEN2, "LSI MegaSAS Gen2"}, 129 {0x1000, 0x007c, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"}, 130 {0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */ 131 {0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */ 132 {0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"}, 133 {0, 0, 0, 0, 0, NULL} 134}; 135 136static struct mfi_ident * 137mfi_find_ident(device_t dev) 138{ 139 struct mfi_ident *m; 140 141 for (m = mfi_identifiers; m->vendor != 0; m++) { 142 if ((m->vendor == pci_get_vendor(dev)) && 143 (m->device == pci_get_device(dev)) && 144 ((m->subvendor == pci_get_subvendor(dev)) || 145 (m->subvendor == 0xffff)) && 146 ((m->subdevice == pci_get_subdevice(dev)) || 147 (m->subdevice == 0xffff))) 148 return (m); 149 } 150 151 return (NULL); 152} 153 154static int 155mfi_pci_probe(device_t dev) 156{ 157 struct mfi_ident *id; 158 159 if ((id = mfi_find_ident(dev)) != NULL) { 160 device_set_desc(dev, id->desc); 161 return (BUS_PROBE_DEFAULT); 162 } 163 return (ENXIO); 164} 165 166static int 167mfi_pci_attach(device_t dev) 168{ 169 struct mfi_softc *sc; 170 struct mfi_ident *m; 171 uint32_t command; 172 int error; 173 174 sc = device_get_softc(dev); 175 bzero(sc, sizeof(*sc)); 176 sc->mfi_dev = dev; 177 m = mfi_find_ident(dev); 178 sc->mfi_flags = m->flags; 179 180 /* Verify that the adapter can be set up in PCI space */ 181 command = pci_read_config(dev, PCIR_COMMAND, 2); 182 command |= PCIM_CMD_BUSMASTEREN; 183 pci_write_config(dev, PCIR_COMMAND, command, 2); 184 command = pci_read_config(dev, PCIR_COMMAND, 2); 185 if ((command & PCIM_CMD_BUSMASTEREN) == 0) { 186 device_printf(dev, "Can't enable PCI busmaster\n"); 187 return (ENXIO); 188 } 189 if ((command & PCIM_CMD_MEMEN) == 0) { 190 device_printf(dev, "PCI memory window not available\n"); 191 return (ENXIO); 192 } 193 194 /* Allocate PCI registers */ 195 if ((sc->mfi_flags & MFI_FLAGS_1064R) || 196 (sc->mfi_flags & MFI_FLAGS_1078)) { 197 /* 1068/1078: Memory mapped BAR is at offset 0x10 */ 198 sc->mfi_regs_rid = PCIR_BAR(0); 199 } else if (sc->mfi_flags & MFI_FLAGS_GEN2) { 200 /* GEN2: Memory mapped BAR is at offset 0x14 */ 201 sc->mfi_regs_rid = PCIR_BAR(1); 202 } 203 if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev, 204 SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) { 205 device_printf(dev, "Cannot allocate PCI registers\n"); 206 return (ENXIO); 207 } 208 sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource); 209 sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource); 210 211 error = ENOMEM; 212 213 /* Allocate parent DMA tag */ 214 if (bus_dma_tag_create( NULL, /* parent */ 215 1, 0, /* algnmnt, boundary */ 216 BUS_SPACE_MAXADDR, /* lowaddr */ 217 BUS_SPACE_MAXADDR, /* highaddr */ 218 NULL, NULL, /* filter, filterarg */ 219 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */ 220 BUS_SPACE_UNRESTRICTED, /* nsegments */ 221 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 222 0, /* flags */ 223 NULL, NULL, /* lockfunc, lockarg */ 224 &sc->mfi_parent_dmat)) { 225 device_printf(dev, "Cannot allocate parent DMA tag\n"); 226 goto out; 227 } 228 229 error = mfi_attach(sc); 230out: 231 if (error) { 232 mfi_free(sc); 233 mfi_pci_free(sc); 234 } 235 236 return (error); 237} 238 239static int 240mfi_pci_detach(device_t dev) 241{ 242 struct mfi_softc *sc; 243 struct mfi_disk *ld; 244 int error; 245 246 sc = device_get_softc(dev); 247 248 sx_xlock(&sc->mfi_config_lock); 249 mtx_lock(&sc->mfi_io_lock); 250 if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) { 251 mtx_unlock(&sc->mfi_io_lock); 252 sx_xunlock(&sc->mfi_config_lock); 253 return (EBUSY); 254 } 255 sc->mfi_detaching = 1; 256 mtx_unlock(&sc->mfi_io_lock); 257 258 while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) { 259 if ((error = device_delete_child(dev, ld->ld_dev)) != 0) { 260 sc->mfi_detaching = 0; 261 sx_xunlock(&sc->mfi_config_lock); 262 return (error); 263 } 264 } 265 sx_xunlock(&sc->mfi_config_lock); 266 267 EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh); 268 269 mfi_shutdown(sc); 270 mfi_free(sc); 271 mfi_pci_free(sc); 272 return (0); 273} 274 275static void 276mfi_pci_free(struct mfi_softc *sc) 277{ 278 279 if (sc->mfi_regs_resource != NULL) { 280 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY, 281 sc->mfi_regs_rid, sc->mfi_regs_resource); 282 } 283 284 return; 285} 286 287static int 288mfi_pci_suspend(device_t dev) 289{ 290 291 return (EINVAL); 292} 293 294static int 295mfi_pci_resume(device_t dev) 296{ 297 298 return (EINVAL); 299} 300