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 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* PCI/PCI-X/PCIe bus interface for the LSI MegaSAS controllers */ 31 32 #include "opt_mfi.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/selinfo.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 #include <sys/bio.h> 42 #include <sys/malloc.h> 43 #include <sys/uio.h> 44 45 #include <machine/bus.h> 46 #include <machine/resource.h> 47 #include <sys/rman.h> 48 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcivar.h> 51 52 #include <dev/mfi/mfireg.h> 53 #include <dev/mfi/mfi_ioctl.h> 54 #include <dev/mfi/mfivar.h> 55 56 static int mfi_pci_probe(device_t); 57 static int mfi_pci_attach(device_t); 58 static int mfi_pci_detach(device_t); 59 static int mfi_pci_suspend(device_t); 60 static int mfi_pci_resume(device_t); 61 static void mfi_pci_free(struct mfi_softc *); 62 63 static device_method_t mfi_methods[] = { 64 DEVMETHOD(device_probe, mfi_pci_probe), 65 DEVMETHOD(device_attach, mfi_pci_attach), 66 DEVMETHOD(device_detach, mfi_pci_detach), 67 DEVMETHOD(device_suspend, mfi_pci_suspend), 68 DEVMETHOD(device_resume, mfi_pci_resume), 69 DEVMETHOD(bus_print_child, bus_generic_print_child), 70 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 71 { 0, 0 } 72 }; 73 74 static driver_t mfi_pci_driver = { 75 "mfi", 76 mfi_methods, 77 sizeof(struct mfi_softc) 78 }; 79 80 static devclass_t mfi_devclass; 81 DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0); 82 83 struct mfi_ident { 84 uint16_t vendor; 85 uint16_t device; 86 uint16_t subvendor; 87 uint16_t subdevice; 88 int flags; 89 const char *desc; 90 } mfi_identifiers[] = { 91 {0x1000, 0x0411, 0xffff, 0xffff, 0, "LSI MegaSAS 1064R"}, /* Brocton IOP */ 92 {0x1000, 0x0413, 0xffff, 0xffff, 0, "LSI MegaSAS 1064R"}, /* Verde ZCR */ 93 {0x1028, 0x0015, 0xffff, 0xffff, 0, "Dell PERC 5/i"}, 94 {0, 0, 0, 0, 0, NULL} 95 }; 96 97 static struct mfi_ident * 98 mfi_find_ident(device_t dev) 99 { 100 struct mfi_ident *m; 101 102 for (m = mfi_identifiers; m->vendor != 0; m++) { 103 if ((m->vendor == pci_get_vendor(dev)) && 104 (m->device == pci_get_device(dev)) && 105 ((m->subvendor == pci_get_subvendor(dev)) || 106 (m->subvendor == 0xffff)) && 107 ((m->subdevice == pci_get_subdevice(dev)) || 108 (m->subdevice == 0xffff))) 109 return (m); 110 } 111 112 return (NULL); 113 } 114 115 static int 116 mfi_pci_probe(device_t dev) 117 { 118 struct mfi_ident *id; 119 120 if ((id = mfi_find_ident(dev)) != NULL) { 121 device_set_desc(dev, id->desc); 122 return (BUS_PROBE_DEFAULT); 123 } 124 return (ENXIO); 125 } 126 127 static int 128 mfi_pci_attach(device_t dev) 129 { 130 struct mfi_softc *sc; 131 struct mfi_ident *m; 132 uint32_t command; 133 int error; 134 135 sc = device_get_softc(dev); 136 bzero(sc, sizeof(*sc)); 137 sc->mfi_dev = dev; 138 139 /* Verify that the adapter can be set up in PCI space */ 140 command = pci_read_config(dev, PCIR_COMMAND, 2); 141 command |= PCIM_CMD_BUSMASTEREN; 142 pci_write_config(dev, PCIR_COMMAND, command, 2); 143 command = pci_read_config(dev, PCIR_COMMAND, 2); 144 if ((command & PCIM_CMD_BUSMASTEREN) == 0) { 145 device_printf(dev, "Can't enable PCI busmaster\n"); 146 return (ENXIO); 147 } 148 if ((command & PCIM_CMD_MEMEN) == 0) { 149 device_printf(dev, "PCI memory window not available\n"); 150 return (ENXIO); 151 } 152 153 /* Allocate PCI registers */ 154 sc->mfi_regs_rid = PCIR_BAR(0); 155 if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev, 156 SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) { 157 device_printf(dev, "Cannot allocate PCI registers\n"); 158 return (ENXIO); 159 } 160 sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource); 161 sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource); 162 163 error = ENOMEM; 164 165 /* Allocate parent DMA tag */ 166 if (bus_dma_tag_create( NULL, /* parent */ 167 1, 0, /* algnmnt, boundary */ 168 BUS_SPACE_MAXADDR, /* lowaddr */ 169 BUS_SPACE_MAXADDR, /* highaddr */ 170 NULL, NULL, /* filter, filterarg */ 171 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */ 172 BUS_SPACE_UNRESTRICTED, /* nsegments */ 173 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 174 0, /* flags */ 175 NULL, NULL, /* lockfunc, lockarg */ 176 &sc->mfi_parent_dmat)) { 177 device_printf(dev, "Cannot allocate parent DMA tag\n"); 178 goto out; 179 } 180 181 m = mfi_find_ident(dev); 182 sc->mfi_flags = m->flags; 183 184 error = mfi_attach(sc); 185 out: 186 if (error) { 187 mfi_free(sc); 188 mfi_pci_free(sc); 189 } 190 191 return (error); 192 } 193 194 static int 195 mfi_pci_detach(device_t dev) 196 { 197 struct mfi_softc *sc; 198 struct mfi_ld *ld; 199 int error; 200 201 sc = device_get_softc(dev); 202 203 if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) 204 return (EBUSY); 205 206 while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) { 207 error = device_delete_child(dev, ld->ld_disk); 208 if (error) 209 return (error); 210 TAILQ_REMOVE(&sc->mfi_ld_tqh, ld, ld_link); 211 free(ld->ld_info, M_MFIBUF); 212 free(ld, M_MFIBUF); 213 } 214 215 EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh); 216 217 mfi_shutdown(sc); 218 mfi_free(sc); 219 mfi_pci_free(sc); 220 return (0); 221 } 222 223 static void 224 mfi_pci_free(struct mfi_softc *sc) 225 { 226 227 if (sc->mfi_regs_resource != NULL) { 228 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY, 229 sc->mfi_regs_rid, sc->mfi_regs_resource); 230 } 231 232 return; 233 } 234 235 static int 236 mfi_pci_suspend(device_t dev) 237 { 238 239 return (EINVAL); 240 } 241 242 static int 243 mfi_pci_resume(device_t dev) 244 { 245 246 return (EINVAL); 247 } 248