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("$FreeBSD$"); 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 82 static int mfi_pci_probe(device_t); 83 static int mfi_pci_attach(device_t); 84 static int mfi_pci_detach(device_t); 85 static int mfi_pci_suspend(device_t); 86 static int mfi_pci_resume(device_t); 87 static void mfi_pci_free(struct mfi_softc *); 88 89 static 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 }; 99 100 static driver_t mfi_pci_driver = { 101 "mfi", 102 mfi_methods, 103 sizeof(struct mfi_softc) 104 }; 105 106 static devclass_t mfi_devclass; 107 DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0); 108 109 struct 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, 0x1028, 0xffff, MFI_FLAGS_1078, "Dell PERC 6"}, 121 {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"}, 122 {0, 0, 0, 0, 0, NULL} 123 }; 124 125 static struct mfi_ident * 126 mfi_find_ident(device_t dev) 127 { 128 struct mfi_ident *m; 129 130 for (m = mfi_identifiers; m->vendor != 0; m++) { 131 if ((m->vendor == pci_get_vendor(dev)) && 132 (m->device == pci_get_device(dev)) && 133 ((m->subvendor == pci_get_subvendor(dev)) || 134 (m->subvendor == 0xffff)) && 135 ((m->subdevice == pci_get_subdevice(dev)) || 136 (m->subdevice == 0xffff))) 137 return (m); 138 } 139 140 return (NULL); 141 } 142 143 static int 144 mfi_pci_probe(device_t dev) 145 { 146 struct mfi_ident *id; 147 148 if ((id = mfi_find_ident(dev)) != NULL) { 149 device_set_desc(dev, id->desc); 150 return (BUS_PROBE_DEFAULT); 151 } 152 return (ENXIO); 153 } 154 155 static int 156 mfi_pci_attach(device_t dev) 157 { 158 struct mfi_softc *sc; 159 struct mfi_ident *m; 160 uint32_t command; 161 int error; 162 163 sc = device_get_softc(dev); 164 bzero(sc, sizeof(*sc)); 165 sc->mfi_dev = dev; 166 167 /* Verify that the adapter can be set up in PCI space */ 168 command = pci_read_config(dev, PCIR_COMMAND, 2); 169 command |= PCIM_CMD_BUSMASTEREN; 170 pci_write_config(dev, PCIR_COMMAND, command, 2); 171 command = pci_read_config(dev, PCIR_COMMAND, 2); 172 if ((command & PCIM_CMD_BUSMASTEREN) == 0) { 173 device_printf(dev, "Can't enable PCI busmaster\n"); 174 return (ENXIO); 175 } 176 if ((command & PCIM_CMD_MEMEN) == 0) { 177 device_printf(dev, "PCI memory window not available\n"); 178 return (ENXIO); 179 } 180 181 /* Allocate PCI registers */ 182 sc->mfi_regs_rid = PCIR_BAR(0); 183 if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev, 184 SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) { 185 device_printf(dev, "Cannot allocate PCI registers\n"); 186 return (ENXIO); 187 } 188 sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource); 189 sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource); 190 191 error = ENOMEM; 192 193 /* Allocate parent DMA tag */ 194 if (bus_dma_tag_create( NULL, /* parent */ 195 1, 0, /* algnmnt, boundary */ 196 BUS_SPACE_MAXADDR, /* lowaddr */ 197 BUS_SPACE_MAXADDR, /* highaddr */ 198 NULL, NULL, /* filter, filterarg */ 199 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */ 200 BUS_SPACE_UNRESTRICTED, /* nsegments */ 201 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 202 0, /* flags */ 203 NULL, NULL, /* lockfunc, lockarg */ 204 &sc->mfi_parent_dmat)) { 205 device_printf(dev, "Cannot allocate parent DMA tag\n"); 206 goto out; 207 } 208 209 m = mfi_find_ident(dev); 210 sc->mfi_flags = m->flags; 211 212 error = mfi_attach(sc); 213 out: 214 if (error) { 215 mfi_free(sc); 216 mfi_pci_free(sc); 217 } 218 219 return (error); 220 } 221 222 static int 223 mfi_pci_detach(device_t dev) 224 { 225 struct mfi_softc *sc; 226 struct mfi_disk *ld; 227 int error; 228 229 sc = device_get_softc(dev); 230 231 sx_xlock(&sc->mfi_config_lock); 232 mtx_lock(&sc->mfi_io_lock); 233 if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) { 234 mtx_unlock(&sc->mfi_io_lock); 235 sx_xunlock(&sc->mfi_config_lock); 236 return (EBUSY); 237 } 238 sc->mfi_detaching = 1; 239 mtx_unlock(&sc->mfi_io_lock); 240 241 while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) { 242 if ((error = device_delete_child(dev, ld->ld_dev)) != 0) { 243 sc->mfi_detaching = 0; 244 sx_xunlock(&sc->mfi_config_lock); 245 return (error); 246 } 247 } 248 sx_xunlock(&sc->mfi_config_lock); 249 250 EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh); 251 252 mfi_shutdown(sc); 253 mfi_free(sc); 254 mfi_pci_free(sc); 255 return (0); 256 } 257 258 static void 259 mfi_pci_free(struct mfi_softc *sc) 260 { 261 262 if (sc->mfi_regs_resource != NULL) { 263 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY, 264 sc->mfi_regs_rid, sc->mfi_regs_resource); 265 } 266 267 return; 268 } 269 270 static int 271 mfi_pci_suspend(device_t dev) 272 { 273 274 return (EINVAL); 275 } 276 277 static int 278 mfi_pci_resume(device_t dev) 279 { 280 281 return (EINVAL); 282 } 283