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