1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999 Michael Smith 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bio.h> 35 #include <sys/kernel.h> 36 #include <sys/lock.h> 37 #include <sys/module.h> 38 #include <sys/mutex.h> 39 #include <sys/sx.h> 40 41 #include <sys/bus.h> 42 #include <sys/conf.h> 43 44 #include <machine/bus.h> 45 #include <machine/resource.h> 46 #include <sys/rman.h> 47 48 #include <geom/geom_disk.h> 49 50 #include <dev/pci/pcireg.h> 51 #include <dev/pci/pcivar.h> 52 53 #include <dev/mlx/mlxio.h> 54 #include <dev/mlx/mlxvar.h> 55 #include <dev/mlx/mlxreg.h> 56 57 static int mlx_pci_probe(device_t dev); 58 static int mlx_pci_attach(device_t dev); 59 60 static device_method_t mlx_methods[] = { 61 /* Device interface */ 62 DEVMETHOD(device_probe, mlx_pci_probe), 63 DEVMETHOD(device_attach, mlx_pci_attach), 64 DEVMETHOD(device_detach, mlx_detach), 65 DEVMETHOD(device_shutdown, mlx_shutdown), 66 DEVMETHOD(device_suspend, mlx_suspend), 67 DEVMETHOD(device_resume, mlx_resume), 68 69 DEVMETHOD_END 70 }; 71 72 static driver_t mlx_pci_driver = { 73 "mlx", 74 mlx_methods, 75 sizeof(struct mlx_softc) 76 }; 77 78 DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0); 79 80 struct mlx_ident 81 { 82 u_int16_t vendor; 83 u_int16_t device; 84 u_int16_t subvendor; 85 u_int16_t subdevice; 86 int iftype; 87 char *desc; 88 } mlx_identifiers[] = { 89 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 90 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 91 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 92 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 93 {0, 0, 0, 0, 0, 0} 94 }; 95 96 static struct mlx_ident * 97 mlx_pci_match(device_t dev) 98 { 99 struct mlx_ident *m; 100 101 for (m = mlx_identifiers; m->vendor != 0; m++) { 102 if ((m->vendor == pci_get_vendor(dev)) && 103 (m->device == pci_get_device(dev)) && 104 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 105 (m->subdevice == pci_get_subdevice(dev))))) 106 return (m); 107 } 108 return (NULL); 109 } 110 111 static int 112 mlx_pci_probe(device_t dev) 113 { 114 struct mlx_ident *m; 115 116 debug_called(1); 117 118 m = mlx_pci_match(dev); 119 if (m != NULL) { 120 device_set_desc(dev, m->desc); 121 return(BUS_PROBE_DEFAULT); 122 } 123 return(ENXIO); 124 } 125 126 static int 127 mlx_pci_attach(device_t dev) 128 { 129 struct mlx_softc *sc; 130 struct mlx_ident *m; 131 int error; 132 133 debug_called(1); 134 135 pci_enable_busmaster(dev); 136 137 sc = device_get_softc(dev); 138 sc->mlx_dev = dev; 139 140 /* 141 * Work out what sort of adapter this is (we need to know this in order 142 * to map the appropriate interface resources). 143 */ 144 m = mlx_pci_match(dev); 145 if (m == NULL) /* shouldn't happen */ 146 return(ENXIO); 147 sc->mlx_iftype = m->iftype; 148 149 mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF); 150 sx_init(&sc->mlx_config_lock, "mlx config"); 151 callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0); 152 153 /* 154 * Allocate the PCI register window. 155 */ 156 157 /* type 2/3 adapters have an I/O region we don't prefer at base 0 */ 158 switch(sc->mlx_iftype) { 159 case MLX_IFTYPE_2: 160 case MLX_IFTYPE_3: 161 sc->mlx_mem_type = SYS_RES_MEMORY; 162 sc->mlx_mem_rid = MLX_CFG_BASE1; 163 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 164 &sc->mlx_mem_rid, RF_ACTIVE); 165 if (sc->mlx_mem == NULL) { 166 sc->mlx_mem_type = SYS_RES_IOPORT; 167 sc->mlx_mem_rid = MLX_CFG_BASE0; 168 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 169 &sc->mlx_mem_rid, RF_ACTIVE); 170 } 171 break; 172 case MLX_IFTYPE_4: 173 case MLX_IFTYPE_5: 174 sc->mlx_mem_type = SYS_RES_MEMORY; 175 sc->mlx_mem_rid = MLX_CFG_BASE0; 176 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 177 &sc->mlx_mem_rid, RF_ACTIVE); 178 break; 179 } 180 if (sc->mlx_mem == NULL) { 181 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 182 mlx_free(sc); 183 return(ENXIO); 184 } 185 186 /* 187 * Allocate the parent bus DMA tag appropriate for PCI. 188 */ 189 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */ 190 1, 0, /* alignment, boundary */ 191 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 192 BUS_SPACE_MAXADDR, /* highaddr */ 193 NULL, NULL, /* filter, filterarg */ 194 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 195 BUS_SPACE_UNRESTRICTED, /* nsegments */ 196 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 197 BUS_DMA_ALLOCNOW, /* flags */ 198 NULL, /* lockfunc */ 199 NULL, /* lockarg */ 200 &sc->mlx_parent_dmat); 201 if (error != 0) { 202 device_printf(dev, "can't allocate parent DMA tag\n"); 203 mlx_free(sc); 204 return(ENOMEM); 205 } 206 207 /* 208 * Do bus-independent initialisation. 209 */ 210 error = mlx_attach(sc); 211 if (error != 0) { 212 mlx_free(sc); 213 return(error); 214 } 215 216 /* 217 * Start the controller. 218 */ 219 mlx_startup(sc); 220 return(0); 221 } 222